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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Fertuzinhos, Andreia Filipa Esteves;

    As organizações sem fins lucrativos têm enfrentado, nos últimos anos, um mercado dinâmico e por isso em constante mudança. Para garantir a sua sobrevivência e cumprir com os seus objetivos, as organizações sem fins lucrativos têm de ser capazes de responder rápida e eficazmente às mudanças apresentadas pelo meio envolvente. Devido à diminuição dos apoios estatais, as dificuldades financeiras destas organizações ampliaram-se resultando num aumento da necessidade destas se tornarem sustentáveis. Deste modo, e considerando o período de instabilidade atual, é essencial perceber e analisar a gestão estratégica das organizações sem fins lucrativos, bem como analisar de que forma estas organizações são capazes de criar e modificar os recursos através do desenvolvimento de novos métodos e técnicas. A introdução das capacidades dinâmicas na gestão estratégica apoia as organizações sem fins lucrativos no cumprimento dos seus objetivos através da criação de respostas inovadoras e tempestivas aos problemas. Assim sendo, a presente investigação tem como principal objetivo: analisar o desenvolvimento das capacidades dinâmicas na gestão estratégica das organizações sem fins lucrativos. No sentido de responder às questões de investigação foram realizados cinco casos de estudo (Caso A, B, C, D e E). Cada caso corresponde a uma organização distinta, na qual foram realizadas entrevistas dirigidas ao gestor da organização ou seus representantes. A análise de dados qualitativos revelou que a adaptação e aplicação de conceitos de gestão empresarial no setor não lucrativo orientam as organizações para a autonomia e a sustentabilidade. Por outro lado, o estudo empírico demonstrou que a sustentabilidade é efetivamente uma preocupação constante para a gestão das organizações sem fins lucrativos. Neste sentido, constatou-se que o desenvolvimento de capacidades dinâmicas no contexto destas organizações constitui um fator crítico de sucesso. O presente estudo demonstra que a existência destas capacidades potenciam a capacidade de resposta às necessidades do mercado no qual estas organizações operam. Devido às exigências da sociedade, estas organizações tendem a procurar diferentes soluções para diferentes problemas, não permitindo a estagnação da atividade nem a perda de valor de mercado fomentando assim o desenvolvimento das capacidades dinâmicas nas organizações sem fins lucrativos. Deste modo, a gestão estratégica encontra-se inevitavelmente ligada ao desenvolvimento de capacidades dinâmicas nas organizações sem fins lucrativos, pois, a estratégia tem como objetivo a valorização da organização e as capacidades dinâmicas permitem o cumprimento do mesmo com maior eficiência e eficácia. Em suma, verifica-se a relevância da gestão das organizações sem fins lucrativos e ainda a diversidade de estudos que ainda poderão ser realizados nesta área. In recent years non-profit organizations have been exposed to a dynamic market characterised by constant changes. In order to accomplish their goals and to survive, non-profit organisations need to provide efficient responses to the changes presented by the surrounding environment. Due to the decrease of state aid, the financial difficulties of these organizations have increased, raising the necessity of becoming financially sustainable. Therefore, it is essential to understand and analyse the strategic management of non-profit organizations as well as to analyse how these organizations are capable of create and modify its resources through the development of new methods and technics. The introduction of dynamic capabilities in strategic management supports non-profit organizations in the fulfilment of its goals through the creation of innovative and timely responses. Therefore, this research aims at analysing the development of dynamic capabilities in strategic management of non-profit organizations. In order to answer to the research questions, five study cases were performed (Case A, B, C, D and E). Each case corresponds to one organization only and the interviews were made to non-profit organisations’ CEO. The analysis of the qualitative data revealed that the application and adaptation of private management concepts into the non-profit sector are crucial to guide the organizations towards greater autonomy and sustainability. The sustainability is currently a constant concern for non-profit organizations’ management and therefore the application of the dynamic capabilities concept into the non-profit sector allows the organizations to develop themselves as well as respond in a fast and efficient manner to the necessities of the market. Due to increasing market challenges, these organizations tend to search for different solutions in order to solve different problems. The present study demonstrates that the dynamic capabilities are extremely important to foster non-profit organization’s sustainability, by not allowing stagnation of the activity nor loss of market value. Thus, the strategic management is necessarily bound to the development of the dynamic capabilities into non-profit organizations. This means that the aim of the strategy is to add more value to the organization, so that the dynamic capabilities can play an important role by providing greater efficiency and efficacy. Moreover, this research demonstrates the relevance of management for non-profit organisations while reinforces the need of further studies into this subject. Dissertação de mestrado em Administração Pública (área de especialização em Gestão Pública e Políticas Públicas)

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Barbosa, Sílvia Costa;

    A indústria da moda é a segunda maior poluidora industrial depois da aviação, respondendo por até 10 % da poluição global. No entanto, apesar desse impacto ambiental amplamente divulgado, a indústria continua a crescer, em parte devido ao surgimento da fast fashion, que depende da mão de obra de baixo custo, do consumo excessivo e de vestuário de curta duração. Posto isto, é essencial que haja uma desaceleração da produção, de volta para a slow fashion, a introdução de práticas sustentáveis por toda a cadeia de abastecimento e uma mudança no comportamento do consumidor. A presente dissertação contribuiu para a melhoria da sustentabilidade da Sonae Fashion, onde o principal objetivo foi o apoio na definição da estratégia de melhoria e no desenvolvimento de modelo negócio para o plástico e denim responsável. Em relação ao denim da marca Salsa, foi necessário analisar a sua rastreabilidade (pegada ambiental, logística, geografia), estudar benchmarks de denim sustentável e responsável, e desenvolver um plano de alternativas mais sustentável. Relativamente aos plásticos das marcas MO, Zippy e Salsa, foi necessário analisar todo o plástico das lojas, desde a sua chegada à loja até à sua saída, quantificar, tipificar e cadastrar os tipos de plásticos, estudar alternativas para reduzir o seu consumo e apoiar a definição de estratégia e modelo de negócio para a sustentabilidade, circularidade e reciclagem do plástico. Concluiu-se, em relação ao denim, que 1 par de calças de ganga 100 % algodão consome 2 096 L de água, 760 g de algodão, 3,31 g de soluções químicas, 3,36 g de hipoclorito de sódio e 0,4 kg de pedra-pomes, necessita de uma área de 4,81 m2 , e tem uma pegada de carbono de, 6,01 kg. Através destes resultados foi possível desenvolver um modelo de negócio para tornar o denim ambientalmente mais responsável optando, por exemplo, pelo uso de cânhamo como matéria-prima, pela implementação de tecnologias de acabamento com menor consumo de água e químicos e pela conscientização dos consumidores em relação aos seus impactos. Nos plásticos, após a quantificação e tipificação do plástico que chega ao consumidor final nas lojas MO e Zippy, foi possível concluir que no ano de 2019 o mais consumido foi o PEBD, cerca de 74 toneladas, e o segundo mais consumido foi o PVC, cerca de 39 toneladas. Para além disso, confirmou-se que o plástico gerado nas lojas MO, Zippy e Salsa, é corretamente tratado, sendo recolhido e encaminhado para a reciclagem. Com estes resultados, foi possível desenvolver um modelo de negócio para o plástico através da eliminação, substituição e reutilização das embalagens. The fashion industry is the second largest industrial polluter after aviation, accounting for up to 10 % of global pollution. Yet, despite this widely publicized environmental impact, the industry continues to grow, in part due to the rise of fast fashion, which relies on cheap labor, overconsumption and short lived clothing. That being said, it is essential that there is a slowdown in production, back to slow fashion, the introduction of sustainable practices throughout the supply chain and a change in consumer behavior. This dissertation contributed to improving Sonae Fashion's sustainability, where the main objective was to support the definition of the improvement strategy and the development of a business model for responsible plastic and denim. In relation to denim from the Salsa brand, it was necessary to analyze the traceability of denim (environmental footprint, logistics, geography), study sustainable and responsible denim benchmarks, and develop a plan of more sustainable alternatives. Regarding plastics of the MO, Zippy and Salsa brands, it was necessary to analyze all the plastic from the MO, Zippy and Salsa stores from its arrival at the store to its departure, quantify, typify and register the types of plastics, study alternatives to reduce the consumption and support the definition of a strategy and business model for the sustainability, circularity and recycling of plastic. It was concluded, in relation to denim, that 1 pair of 100 % cotton jeans consumes 2 096 L of water, 760 g of cotton, 3,31 g of chemical solutions, 3,36 g of sodium hypochlorite and 0,4 kg of pumice stone, needs an area of 4,81 m2 , and has a carbon footprint of about 6,01 kg. Through these results, it was possible to develop a business model to make denim more environmentally responsible, opting, for example, for the use of hemp as a raw material, for the implementation of finishing technologies with less consumption of water and chemicals and for the awareness of the consumers regardind their impacts. In plastics, after quantifying and typifying the plastic that reaches the final consumer at MO and Zippy stores, it was possible to conclude that in 2019 the most consumed was LDPE, around 74 tons, and the second most consumed was PVC, about 39 tons. Furthermore, it was confirmed that the plastic generated in the MO, Zippy and Salsa stores is correctly treated, being collected and sent for recycling. With these results, it was possible to develop a business model for plastic through the elimination, replacement and reuse of packaging. Dissertação de mestrado integrado em Engenharia Biológica

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Universidade do Minho: RepositoriUM
    Other ORP type . 2021
    License: CC BY NC ND
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Universidade do Minho: RepositoriUM
      Other ORP type . 2021
      License: CC BY NC ND
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Abreu, Carla Sofia Faria;

    Este relatório de estágio centra-se no tema da divulgação de informação sobre responsabilidade social por parte das empresas, apresentando como objetivos: perceber que informação sobre responsabilidade social é divulgada, como e onde; entender quais as motivações que levam à sua divulgação; e compreender quais os efeitos sentidos da divulgação de informação sobre a sua responsabilidade social. O estágio desenvolvido visa também cumprir com os requisitos previstos no artigo 9.º do RIEEP da OCC. Atendendo aos objetivos delineados, é adotada uma metodologia qualitativa que assenta numa perspetiva interpretativa e considera como enquadramento teórico a legitimidade. Na sequência, opta-se por um estudo de caso único e exploratório. A escolha deste caso justifica-se pelo facto de o estágio curricular ter sido realizado no Grupo, para quem a responsabilidade social e a sua divulgação não é indiferente. É desenvolvida uma análise documental descritiva aos Relatórios e Contas consolidadas dos anos de 2016 e de 2017 e ao site do Grupo, complementada com a análise das entrevistas semiestruturadas realizadas a quatro pessoas designadas pelo Grupo, relacionadas ao tema em estudo. Atendendo à análise descritiva realizada aos documentos de Prestação de Contas e ao site da empresa, constata-se que os conteúdos são selecionados tendo em conta o canal de comunicação. No entanto, quer nos Relatórios e Contas Consolidadas quer no site da empresa, a informação é apresentada de forma narrativa e descrita de modo sintetizado. As principais motivações da divulgação de informação de responsabilidade social devemse ao facto de a empresa não querer transmitir uma imagem unicamente preocupada com fins lucrativos, a sensibilização dos colaboradores e o aumento da sua dimensão, nos últimos anos. Existe a perceção de que a divulgação contribuiu com um efeito positivo, quer ao nível dos clientes quer ao nível das empresas locais. This internship report focuses on the issue of corporate social responsibility information disclosure by companies, with the following goals: to perceive what kind of social responsibility information is disclosed, how and where; to understand the motivations that lead to its disclosure; and to understand the perceived effects of the information disclosure about social responsibility. This internship also aims to comply with the requirements of Article 9 of the OCC RIEEP. Considering the outlined goals, a qualitative methodology based on an interpretive perspective and that considers the legitimacy as a theoretical framework was adopted. Subsequently, a single exploratory case study was chosen. The choice of this case is justified by the fact that the curricular internship has been carried out in the Group, an institution that is not indifferent to social responsibility and its disclosure. A documental analysis describing the consolidated Reports and Accounts of the years 2016 and 2017 and the Group's website was developed and complemented by the analysis of the semi-structured interviews conducted in the Group, related to the study issue. Based on the descriptive analysis performed, it is shown that the contents are selected taking into account the communication channel. However, both in the Consolidated Reports and Accounts and in the company’s website, the information is presented in a narrative form and described in a synthesized way. The main motivations for the social responsibility information disclosure are the fact that the company doesn’t want to convey a purely profit-oriented image, the will to raise awareness amongst employees and the company’s growth in recent years. There is a perception that disclosure has had a positive effect both in clients and local companies. Relatório de estágio de mestrado em Contabilidade

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Freitas, Manuela Pereira de;

    As telas publicitárias são continuamente utilizadas na promoção de eventos, concertos, atividades políticas, informativas, campanhas de marketing visíveis em vários locais. No entanto, qual o seu destino quando o tema publicitado expira? Na tentativa de dar uma nova vida às telas publicitárias foram procuradas modos de as reutilizar de forma sustentável e útil. Uma forma de reutilização pode ser orientada para o benefício de várias entidades e instituições dadas as propriedades deste material. Neste projeto é feita uma abordagem ao design, à sustentabilidade, à necessidade de inovação. A necessidade de receber ajuda de outrem leva a que os cidadãos (essencialmente idosos) procurem Serviços de Apoio Domiciliário (SAD) serviços prestados por Instituições Particulares de Solidariedade Social (IPSS) que facilitam a rotina diária, de modo a melhorar a sua qualidade de vida. Estes constam de manutenção, limpeza, refeições e incluído no serviço de SAD, deparamo-nos com a manutenção do vestuário dos utentes. Foram efetuados estudos de caso de modo a ter uma maior perceção do funcionamento do serviço e das necessidades existentes. O transporte do vestuário ocorre em dois momentos, quando este é recolhido da habitação do utente para manutenção (serviço de lavandaria do centro) e no sentido inverso. De modo a facilitar estas tarefas foram estudadas as embalagens utilizadas. Para tal foi concebido um produto passível de utilização em todo o ciclo do SAD tendo como material principal as telas publicitárias, procurando assim a conceção de um produto sustentável. Procedeu-se a várias estudos e prototipagem de uma embalagem que respondesse aos requisitos do serviço e que valorizasse o material utilizado. Concluiu-se assim que as telas publicitárias podem reutilizadas para este fim com sucesso. Advertising screens are continually being used in the promotion of events, concerts, political activities, informative, marketing campaigns visible in various locations. However, what is your destination when the advertised theme expires? In an attempt to give new life to the advertising screens, ways were sought to reuse them in a sustainable and useful way. One form of reuse can be targeted to the benefit of various entities and institutions given the properties of this material. In this project an approach is made to design, to sustainability and to the need for innovation. The need to receive help from others leads citizens (mainly the elderly) to seek home support services (SAD) services provided by Private Institutions of Social Solidarity (IPSS) that facilitates daily routine in order to improve their quality of life. These include maintenance, cleaning, meals and included in the SAD service, with the maintenance of the wearer's clothing. Case studies were carried out in order to better understand the functioning of the service and the existing needs. The transportation of the clothing takes place in two moments, when it is collected from the user's room for maintenance (center laundry service) and in the opposite direction. In order to facilitate these tasks packaging used was studied. For this purpose, a product that can be used throughout the SAD cycle was designed with advertising screens as the main material, thus seeking the design of a sustainable product. Several studies and prototyping of a package were carried out to meet the requirements of the service and to value the material used. Conclusions stand that advertising screens can be successfully reused for this purpose. Dissertação de mestrado em Design e Marketing

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Costa, Maria Isabel Ferreira da;

    São as empresas e as organizações em geral, os motores fundamentais da economia e da geração de riqueza e de valor, estando este valor não só associado aos seus produtos e serviços, mas também à forma como os desenvolvem e ao impacto que a sua atividade pode provocar. Numa adaptação aos novos tempos e às necessidades do mercado, as empresas estão cada vez mais conscientes do impacto que podem ter a nível económico, social e ambiental. A sustentabilidade pode ser vista como uma vertente estratégica, que permite às organizações otimizar as suas atividades e adotar uma postura de proatividade e de desenvolvimento sustentável. Contudo, para obter real sustentabilidade, não basta otimizar e reduzir, é também necessário aplicar estratégias e colocar em prática medidas de forma a garantir os níveis mínimos dos ativos ambientais, protegendo assim gerações futuras. Este estudo pretende responder à questão de investigação: “Como é que o relatório de sustentabilidade pode ser uma mais-valia para a indústria automóvel?", através de um caso de estudo na empresa Mário da Costa Martins. Pretende-se então compreender quais as práticas sustentáveis usadas na indústria automóvel, o que é possível melhorar e de que forma. No relatório de sustentabilidade, que esta dissertação pretende desenvolver, será aplicada a metodologia sugerida pela Global Reporting Initiative (GRI). Foi ainda proposta uma metodologia de análise inovadora que permite avaliar o desempenho de sustentabilidade da empresa através do relatório de sustentabilidade elaborado. Companies and organizations in general are the fundamental movers and shakers of the economy and responsible for much of the wealth, with this value not only associated with products and services that they provide, but also with the way they develop them and the impact that their activity can have on society. In order to adapt to new times and market needs, companies are increasingly aware of the impact they can have on an economic, social and environmental level. Sustainability can be seen as a strategic aspect, which allows organizations to optimize activities and adopt a proactive and sustainable stance towards development. However, to achieve real sustainability, it is not enough to optimize and cut costs, it is also necessary to apply strategies and put measures into practice in order to guarantee the minimum levels of environmental assets, thus protecting future generations. This study aims to answer the research question: "How can the sustainability report add value to the automotive industry?", through a case study at the company Mário da Costa Martins. This study focuses on sustainable practices already in practice in the automotive industry, what and how can things in MCM be improved. The methodology suggested by the Global Reporting Initiative (GRI) will be applied on the sustainability report, which this dissertation intends to develop. A new method to evaluate firms’ sustainability performance through sustainability report was developed and presented. Dissertação de mestrado em Economia Monetária Bancária e Financeira

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Universidade do Minho: RepositoriUM
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    License: CC BY NC ND
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Universidade do Minho: RepositoriUM
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      License: CC BY NC ND
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Veiga, Bruno Miguel Salgueiro;

    Este relatório é o produto de um estágio curricular, realizado na Domingos da Silva Teixeira, DST, que teve por objetivo calcular a pegada de carbono da empresa e propor melhorias nas estratégias de redução das emissões de gases com efeito de estufa. As externalidades negativas relacionadas com a queima de combustíveis fósseis provocaram, desde a revolução industrial, o problema das alterações climáticas. Neste contexto, as empresas começam a integrar preocupações ambientais nas suas estratégias de negócio, por forma a serem mais eficientes. Uma ação de grande importância é o cálculo da pegada de carbono, que contabiliza toda a responsabilidade climática da organização. Neste trabalho, após o estabelecimento de uma parceria entre Universidade do Minho e a Research Feel, utilizou-se o Método Composto das Contas Financeiras (MC3) de Juan Luis Doménech, para cálculo da pegada de carbono, compatível com outras metodologias como a ISO 14069. Os resultados obtidos são divididos em emissões diretas do uso de combustíveis fósseis, que correspondem a cerca de 13% da pegada, ou 13 251 tCO2eq.; emissões indiretas provenientes do uso de energia, que respeitam a cerca de 4%, ou 4 456 tCO2eq.; e, por fim, outras emissões indiretas, sendo a grande fatia de 83% representativa da responsabilidade climática da DST, isto é, 88 110 tCO2eq. O terceiro âmbito pode, por vezes, ser encarado como responsabilidade climática dos utilizadores finais dos produtos. No entanto, optou-se pela referência completa dos resultados dado o enquadramento académico deste relatório e, também, porque reflete uma oportunidade para a DST lutar contra as alterações climáticas. A “hereditariedade” da pegada de produtos usados em projetos e serviços de fabricação ou construção da DST pode ser minimizada através do chamado efeito dominó em que a responsabilidade é deslocada para o verdadeiro causador, isto é, a cadeia de abastecimento da DST. Uma política de compras “verdes” é a principal medida que se conclui adotar de forma a reduzir a pegada de carbono da empresa. Outras melhorias indicadas, muitas já em implementação e de menor impacto, incluem a modificação do manual de boas práticas para os colaboradores da DST, uma maior aposta na utilização de energias renováveis e a eventual modificação do parque automóvel. Estas deverão ser aplicadas de forma gradual, promovendo o uso eficiente de todos os recursos, trazendo benefícios significativos a médio prazo, tornando a empresa mais sustentável. This report is the product of a curricular internship, held at Domingos da Silva Teixeira, DST, which aimed to assess the company's carbon footprint and propose strategic improvements to reduce greenhouse gas emissions. The negative externalities related to the burning of fossil fuels have, since the industrial revolution, caused the problem of climate change. In this context, companies are beginning to integrate environmental concerns into their business strategies in order to become more efficient. One important action is the calculation of the carbon footprint, which accounts for all the climatic responsibility of the organization. In this work, after the establishment of a partnership between University of Minho and Research Feel, Juan Luis Doménech's Compound Method of Financial Accounts (MC3) was used to calculate the carbon footprint, compatible with other methodologies such as ISO 14069. The results obtained are divided into direct emissions from the use of fossil fuels, corresponding to about 13% of the footprint, or 13,251 tCO2eq; indirect emissions from energy use, which account for approximately 4%, or 4,456 tCO2eq; and finally, to other indirect emissions, with the large share of 83% of the climatic responsibility belonging to DST, that is, 88 110 tCO2eq. The third scope can sometimes be seen as the climatic liability of the final users of the products. However, the full reference of the results was chosen given the academic framework of this report and because it reflects an opportunity for DST to fight against climate change. The "inheritance" of the footprint of products used in DST manufacturing or construction projects and services can be minimized through the so-called domino effect in which responsibility is shifted to the true causer, i.e. the DST supply chain. A "green" purchasing policy is thus the main measure that has been found to reduce the company's carbon footprint. Other improvements, many already under implementation and of lesser impact, include the modification of the best practices’ manual for DST employees, a greater focus on the use of renewable energies, and possible alteration of the fleet. These should be applied gradually, promoting the efficient use of all resources, bringing significant benefits in the mid-term, and making the company more sustainable. Relatório de estágio de mestrado em Economia Industrial e da Empresa

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Pereira, André Filipe Teixeira;

    In response to an ever increasing demand for electricity and the desire for environmentally friendly energy sources, new policies have emerged to produce "green" energy from renewable sources. Many of the initial investments were made in wind energy, solar energy, biomass energy, geothermal energy, among others, that allow a little pollution or in certain cases no pollution at all. Although human power is not enough to sustain a massive power grid, it has the potential to charge electronic devices such as iPod's, music players and mobile phones. The process of energy harvesting consists of using environmental energy to supply primarily (but not exclusively) electricity to small mobile devices, either electrical or electronic. This process should be free of maintenance and have a high durability, reducing the need for batteries. The human movement is characterized by movements of large amplitude at low frequencies and some level of impact in the area of the foot heel during walking. These impacts send shock waves through the human body which are rapidly absorbed by the articulations. Studies have demonstrated that, on average, an individual with 68 kg walking at a speed of 2 steps per second and with a vertical movement of the heel of 5 cm is capable of generating 67 W of energy [1]. The transducers energy devices can be placed in different locations of the human body, may be in clothing, shoes, a waist bag, a backpack, among others. Nevertheless, the amplitude, frequency and nature of the vibration can be quite different in different locations of the body. There are several types of generators that allow capture and transform the human motion into electrical energy such as inertial, piezoelectric, electrostatic and electromagnetic generators. There are several types of generators that allow to capture and transform the human motion into electrical energy such as inertial, piezoelectric, electrostatic and electromagnetic generators. In this project it was decided to use the electromagnetic generator because it is the one that best adapts to the capture of human movement and the vibration of the same. Furthermore, it is the most efficient, because humans’ movements cause a variation in the magnetic field of an inductor, which in turn will produce a current. The problem that this project proposes to solve consists in designing a system to capture energy generated by human activity in order to detect, capture and convert (specifically walking or running) the human motion into electricity which can be used as and provide a portable power source. In the end of this project, it is concluded that the energy captured through human action and transformed into renewable energy is viable presenting, however, very low power values produced. Em resposta ao aumento da procura de eletricidade e ao desejo de fontes energéticas ambientalmente amigáveis, têm surgido novas políticas de produzir energia “verde” de uma forma rentável a partir de fontes de energia renováveis. Muitos dos investimentos iniciais foram realizados em energia eólica, energia solar, energia de biomassa, energia geotérmica, entre outras, que permitem pouca ou nenhuma poluição. Embora a energia humana não seja suficiente para sustentar uma rede elétrica massiva, tem potencial para carregar dispositivos eletrónicos como iPod’s, leitores de música e telefones móveis. O processo de captação de energia consiste em usar a energia ambiental para fornecer primariamente (mas não exclusivamente) eletricidade a pequenos dispositivos móveis, sejam esses elétricos ou eletrónicos. Este processo deverá ser isento de manutenções e possuir uma durabilidade elevada, reduzindo assim a necessidade de baterias. O movimento humano é caracterizado por movimentos de grande amplitude a baixas frequências e algum grau de impacto na zona do calcanhar do pé durante uma caminhada. Estes impactos enviam ondas de choque através do corpo humano sendo rapidamente absorvidos pelas articulações. Estudos demonstraram que, em média, um indivíduo de 68 kg que caminha à velocidade de 2 passos por segundo e com um movimento vertical de calcanhar de 5 cm é capaz de gerar 67 W de energia [1]. Os dispositivos transdutores de energia podem ser colocados em diferentes locais do corpo humano seja no vestuário, no calçado, numa bolsa de cintura, numa mochila, entre outros. Porém a amplitude, a frequência e a natureza da vibração podem ser bastante diferentes em locais do corpo distintos. Existem vários tipos de geradores que permitem captar e transformar o movimento humano em energia elétrica tais como os geradores inerciais, piezoelétricos, eletrostáticos e eletromagnéticos. Neste projeto optou-se por utilizar o gerador eletromagnético pois é o que mais se adapta à captação dos movimentos humanos e vibração dos mesmos, também porque é o mais eficiente visto que o ser humano ao movimentar-se provoca uma variação no campo magnético da bobina que por sua vez produzirá uma corrente. Este projeto apenas incidirá na captação de energia a partir de fontes vibracionais. Isto não significa que as fontes de energia vibracionais são a melhor opção na captação energética, mas apenas uma das soluções mais apropriadas para a autossustentabilidade e miniaturização de pequenos dispositivos. Terminado este projeto, conclui-se que a energia captada através da ação humana e transformada em energia elétrica renovável é viável apresentando, contudo, valores de potência produzida muito baixos. Dissertação de mestrado integrado em Engenharia Eletrónica Industrial e Computadores

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Monteiro, Vítor Duarte Fernandes;

    A aposta na mobilidade elétrica, principalmente em veículos elétricos (VEs), representa um novo paradigma de transporte tendo por base a mobilidade eficiente e sustentável. Como consequência, é também uma mais-valia para a independência dos custos do petróleo e para a redução das emissões de gases com efeito de estufa. Para que este novo paradigma de transporte seja uma alternativa viável face aos atuais veículos com motor de combustão interna, é espectável que os VEs tenham custos reduzidos, tanto ao nível da utilização como da produção e manutenção. Além disso, com a sua integração nas redes elétricas, é também espectável que a qualidade da energia elétrica não seja descurada. Assim, o projeto de investigação apresentado nesta tese enquadra-se na conjuntura atual de desenvolvimento científico e tecnológico da mobilidade elétrica. Neste contexto, são propostos novos modos de operação que permitem a integração dinâmica dos VEs na rede elétrica visando as smart grids, assim como novas topologias on-board e off-board para sistemas de carregamento de baterias de VEs. Hoje em dia, tipicamente, os VEs disponíveis comercialmente apenas permitem carregar as baterias através do modo de operação grid-to-vehicle (G2V). Nesta tese, os sistemas de carregamento de baterias de VEs desenvolvidos permitem operar em modo bidirecional, viabilizando o modo de operação vehicle-to-grid (V2G). Através dos modos de operação G2V e V2G, o VE pode atuar contextualizado com cenários colaborativos com a rede elétrica, i.e., como elemento consumidor, armazenador e fornecedor de energia, dando especial contributo à área de sistemas de armazenamento de energia das smart grids. Além disso, tendo em conta a evolução das smart homes e smart grids, nesta tese são propostos e validados experimentalmente novos modos de operação que representam novos desafios e oportunidades para a utilização do VE. Nesta tese é proposto o modo de operação home-to-vehicle (H2V), que é referente ao controlo dos modos de operação G2V e V2G em função das cargas da casa onde o VE está conectado. É proposto o modo de operação vehicle-for-grid (V4G), que está relacionado com a evolução das smart homes nas smart grids, e é referente à utilização do VE para mitigar problemas de qualidade da energia elétrica (fator de potência e harmónicas de corrente), durante os modos de operação G2V e V2G, ou mesmo fora dos períodos de operação nestes modos. É também proposto o modo de operação vehicle-to-home (V2H), que está relacionado com a evolução das smart homes nas smart grids, e é referente à utilização do VE como fonte de tensão independente ou como fonte de tensão ininterrupta, semelhante a uma uninterruptible power supply (UPS) do tipo off-line. Além da contextualização com estes modos de operação, os sistemas de carregamento de baterias propostos podem também operar em colaboração com fontes de energia renováveis, contribuindo para a integração ativa destes veículos na rede elétrica. Além dos modos de operação, nesta tese estão também propostas novas topologias para sistemas de carregamento de baterias de VEs on-board e off-board. O sistema de carregamento de baterias de VEs on-board é composto por um conversor CA-CC front-end do tipo multinível para interface com a rede elétrica, e por um conversor CC-CC back-end do tipo interleaved para interface com as baterias do VE. Por outro lado, o sistema de carregamento de baterias de VEs off-board é composto por um conversor CA-CC front-end do tipo interleaved para interface com a rede elétrica, e por um conversor CC-CC back-end bidirecional de três níveis para interface com as baterias do VE. Além dos sistemas de carregamento de baterias de VE on-board e off-board, nesta tese é também proposto um sistema integrado de carregamento de baterias e de interface com fonte de energia renovável. Este sistema integrado é composto por um conversor CA-CC front-end full-bridge para interface com a rede elétrica e por dois conversores CC-CC back-end half-bridge para interface com as baterias do VE e com a fonte de energia renovável. As topologias dos sistemas de carregamento de baterias de VE on-board e off-board, assim como do sistema integrado, estão validadas através de resultados de simulação e através de resultados experimentais, obtidos com os protótipos desenvolvidos no âmbito desta tese. The focus on electric mobility, especially in electric vehicles (EVs) represents a new transport paradigm based on the efficient and sustainable mobility. As consequence, it is also an asset for the independence of oil costs and for the reduction of emissions of greenhouse gases. In order to obtain real benefits from this new transportation paradigm in counterpart of the traditional vehicles with internal combustion engine, it is expected that the EVs will have reduced costs, both in terms of usage as production and maintenance. Moreover, with the EVs integration in the power grids, it is also expected that the power quality is not neglected. Thus, the research project presented in this thesis is framed with the current situation of scientific and technological development for electric mobility applications. In this context, are proposed new operating modes that enable the dynamic integration of EVs into the power grids targeting smart grids, as well as new topologies of on-board and off-board EV battery charging systems. Nowadays, typically, the available EVs only allow charge the batteries through the grid-to-vehicle (G2V) operation mode. In this thesis, the developed EVs battery charging systems admit the bidirectional operation, also enabling the vehicle-to-grid (V2G) operation mode. Through the G2V and V2G, the EV can operate contextualized with collaborative scenarios with the power grid, i.e., capable of consuming, storing, and providing energy, representing a special contribution for the area of energy storage systems in the smart grids. Besides, taking into account the evolution of smart homes and smart grids, in the scope of this thesis are proposed, and experimentally validated, new operation modes that represent new challenges and opportunities for the EV usage. In this thesis is proposed the home-to-vehicle (H2V) operation mode, which is related with the dynamic control of the G2V and V2G modes according with the electrical appliances connected in the same installation. It is proposed the vehicle-for-grid (V4G) operation mode, which is related with the evolution of smart homes in the smart grids, and consists in the use of the EV battery charger to mitigate some power quality problems (power factor and current harmonics) during the G2V and V2G operation modes. It is also proposed the vehicle-to-home (V2H) operation mode, which is related with the evolution of smart homes in the smart grids, and consists in the use of the EV battery charger as voltage source in isolated systems or as an off-line uninterruptible power supply (UPS). Besides the contextualization with these operation modes, the proposed topologies for the EV battery charging systems can also operate in collaboration with renewable energy sources, contributing to their active integration into the power grid. Besides the aforementioned operation modes, in this thesis are also proposed new topologies of on-board and off-board EV battery charging systems. The on-board EV battery charging system is composed by a multilevel AC-DC front-end converter used to interface the power grid, and by an interleaved DC-DC back-end converter used to interface the EV batteries. On the other hand, the off-board EV battery charging system is composed by a three-phase interleaved AC-DC front-end converter used to interface the power grid, and by a bidirectional three-level DC-DC back-end converter used to interface the EV batteries. Besides the on-board and off-board EV battery charging systems, in this thesis is also proposed an integrated system to interface an EV and a renewable energy source with the power grid. This integrated system is composed by a full-bridge AC-DC front-end converter used to interface the power grid, and by two half-bridge DC-DC back-end converters used to interface the EV batteries and the renewable energy source. The topologies of the on-board and off-board EV battery chargers, as well as the integrated topology, are validated through simulations and experimental results obtained with the prototypes developed in the scope of this thesis. Parte dos trabalhos foram também suportados pelo COMPETE: POCI-01-0145-FEDER-007043 e pela FCT no âmbito do projeto: PEst-UID/CEC/00319/2013. Tese de Doutoramento Engenharia Eletrónica e de Computadores

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Alves, Cátia Filipa Veiga;

    The real time management paradigm implies real-time decision making and enable dynamic reconfiguration of enterprises. In some areas it is possible to find a number of real time management applications, while in manufacturing systems the real time management is still in initial research state. Also, there is a lack of research of scheduling problems considering larger size manufacturing systems. This project aims to validate the following hypotheses: (1) real time management paradigm is more suitable for production scheduling in ubiquitous production networks under conditions of dynamic environments than the fixed horizon and rolling horizon paradigms, and (2) Real time management paradigm contributes to economic and environmental sustainability. The validation was based on simulation, through secondary data collection, which was the base for conduction of all simulations for the validation process. It were investigated four scenarios for validation. The first case represented the case with secondary data (from literature), considering 8 jobs and 8 machines. The second case represented the case with data secondary data with variations, considering 150 jobs and 8 machines. The third case represented the case with data secondary data with variations, considering 180 jobs and 64 machines. The forth case represented the hybrid case of 8 jobs and 64 machines and 8 jobs and 200 machines. A kind of greedy algorithm was considered for the resources (machines) selection, i.e. for each resource selection the choice of the best resource is made at that time, not looking for forward solutions. The validation was carried out by two instruments for hypotheses validation, the original environment model and the original simulator developed. The results obtained for the described scenarios validates the hypotheses that the real time management scheduling paradigm is more suitable when compared with other production scheduling paradigms, and that the real time management contributes to the economic and environmental sustainability. This research contributed to the phenomenology of real time management in ubiquitous and cloud manufacturing systems under conditions of dynamic environments. Further, future work is considered to create new research projects under this topic. O paradigma de gestão em tempo real implica a tomada de decisão em tempo real e permite a reconfiguração dinâmica das empresas. Em algumas áreas é possível encontrar um número de aplicações da gestão em tempo real, enquanto nos sistemas de produção a gestão em tempo real ainda se encontra numa fase inicial de investigação. Existe ainda um falta de investigação nos problemas de escalonamento considerando sistemas de produção de tamanhos grandes. Este projeto tem como objetivo a validação das seguintes hipóteses: (1) o paradigma de gestão em tempo real é mais adequado para sistemas de produção em redes de produção ubíquas em condições de ambientes dinâmicos do que os paradigmas de horizonte fixo e horizonte rolante, e (2) o paradigma de gestão em tempo real contribui para a sustentabilidade económica e ambiental. A validação foi baseada em simulação, através da recolha de dados secundários, que serviram de base para condução de todas as simulações para o processo de validação. Para a validação foram investigados quatro senários: o caso com dados secundários (da literatura), considerando 8 jobs e 8 máquinas, o caso com dados secundários com variações, considerando 150 jobs e 64 máquinas, o caso com dados secundários com variações, considerando 180 jobs e 64 máquinas, e um caso hibrido considerando 8 jobs e 64 máquinas e 8 jobs e 200 máquinas. Um tipo de algoritmo guloso foi considerado para a seleção de recursos (máquinas), isto é, para cada seleção de recursos, a escola do melhor recurso é feita nesse momento, não olhando para soluções futuras. A validação foi realizada através de dois instrumentos para a validação de hipóteses, um modelo de ambiente original e um simulador original desenvolvido. Os resultados obtidos para os senários descritos validam as hipóteses de que o paradigma de gestão em tempo real é mais adequado quando comparado com outros paradigmas de escalonamento de produção, e que a gestão em tempo real contribui para a sustentabilidade económica e ambiental. Esta investigação contribuiu para a fenomenologia da gestão em tempo real em sistemas de produção ubíquos e cloud em condições de ambientes dinâmicos. Além disso, foi considerado trabalhos futuros para a criação de novos projetos de investigação sobre este tema. The PhD project had financial support from the FCT – Fundação para a Ciência e a Tecnologia – under the Doctoral grant number SFRH/BD/85672/2012. Doctoral Degree in Industrial and Systems Engineering

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Rocha, Ana Isabel da Silva;

    A procura pela sustentabilidade e inovação tem vindo a estimular a aplicação de polímeros de base renovável para reforço de filmes poliméricos, melhoria das propriedades de superfície de diversos substratos e aquisição de novas funcionalidades. O principal objetivo deste projeto foi o desenvolvimento de formulações ecossustentáveis capazes de melhorar a hidrofilicidade de substratos, para uma melhor impressão com tintas de base aquosa. A caracterização das formulações foi realizada no estado líquido - medição de viscosidade, avaliação da dispersão por microscopia ótica com luz polarizada e determinação do teor de sólidos, e no estado sólido – análise termogravimétrica (TGA) e espectroscopia de Infravermelho por Transformada de Fourier (FTIRATR). Os métodos utilizados para avaliar os substratos revestidos foram ângulos de contacto com água (CA), energia de superfície (SE), perfilometria e testes de impressão. Inicialmente foram realizados testes preliminares com formulações de bases poliméricas comerciais (Impranil® e Joncryl® aditivadas com α-celulose, NFC-Enzymatic e NFC-TEMPO, as quais foram posteriormente aplicadas nos substratos selecionados – PET, aglomerado de cortiça e PVC. Verificou-se alguma dificuldade no espalhamento aquando da sua aplicação na superfície do substrato, sendo necessário aumentar o efeito molhante das formulações. Adicionalmente, no processo de cura concluiuse que a melhor temperatura era 100 ºC. Pela análise da energia de superfície obtida para os substratos revestidos com as formulações concluiu-se que o substrato PVC foi o que obteve uma melhoria mais significativa em termos de hidrofilicidade. Para aumentar o efeito molhante prepararam-se novas formulações contendo um agente molhante – etanol. Nas formulações líquidas verificou-se uma diminuição da viscosidade e uma boa dispersão dos aditivos de base celulose. O PVC continuou a ser o substrato com melhores resultados quando analisados os ângulos de contacto com água e as energias de superfície. De modo a aumentar a viscosidade das formulações adicionou-se às formulações finais um agente espessante – hidroxietilcelulose (sob a forma de solução de Cellosize TM). Pela análise dos ângulos de contacto e das energias de superfície concluiu-se que o aditivo com melhores resultados foi a α-celulose, apesar desta aumentar significativamente a rugosidade da superfície dos substratos. Por sua vez, com os testes de impressão concluiu-se que o PET foi o substrato que promoveu melhores resultados, apesar de com todos se ter obtido uma boa impressão. The search for sustainability and innovation stimulates the application of the renewable polymers to reinforce polymeric coatings, improvement of the surface’s properties of different substrates and acquirement of new functionalities. The main objective of this thesis was the development of ecosustainable formulations capable of improving the hydrophilicity of substrates, towards a better print of water based inks. The characterization of the formulations was conducted in the liquid state – measurement of viscosity, evaluation of dispersion by optical microscopy with polarized light and determination of the solids’ content, and in the solid state – thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR-ATR). The methods used to evaluate the coated substrates were water contact angles (CA), surface energy (SE), perfilometry and printing tests. Initially, preliminary tests were conducted with commercial polymeric bases (Impranil® and Joncryl®) additivated with α-cellulose, NFC-Enzymatic and NFC-TEMPO, which formulations were then applied on selected substrates – PET, cork agglomerate and PVC. Some difficulty on the spreading was verified when these formulations were applied on the substrates’ surface, thus suggesting the need of increasing the wetting effect of the formulations. Additionally, in the thermal curing process it was concluded that the best temperature was 100 ºC. Through the surface energy analysis of the coated substrates with the formulations it was concluded that PVC exhibited a most significant improvement of hydrophilicity. To increase the wetting effect, new formulations were prepared using a wetting agent – ethanol. In the liquid formulations, a decrease of the viscosity and a good dispersion of the cellulose-based additive was found. Also in these conditions, PVC was found to be the best substrate according to the contact angles and surface energy results. In order to increase the formulations’ viscosity, a thickener agent was added – hydroxyethyl cellulose (in the form of CellosizeTM solution). Through the analysis of the contact angles and surface energy results it was concluded that the additive exhibiting the best performances was α-cellulose, despite the significant increase of the substrates surface roughness. Considering the printing tests, it was concluded that PET was the substrate that promoted the best results, although all the substrates performed well, i.e. exhibited a good printing. Dissertação de mestrado integrado em Engenharia Biológica (área de especialização em Tecnologia Química e Alimentar)

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Fertuzinhos, Andreia Filipa Esteves;

    As organizações sem fins lucrativos têm enfrentado, nos últimos anos, um mercado dinâmico e por isso em constante mudança. Para garantir a sua sobrevivência e cumprir com os seus objetivos, as organizações sem fins lucrativos têm de ser capazes de responder rápida e eficazmente às mudanças apresentadas pelo meio envolvente. Devido à diminuição dos apoios estatais, as dificuldades financeiras destas organizações ampliaram-se resultando num aumento da necessidade destas se tornarem sustentáveis. Deste modo, e considerando o período de instabilidade atual, é essencial perceber e analisar a gestão estratégica das organizações sem fins lucrativos, bem como analisar de que forma estas organizações são capazes de criar e modificar os recursos através do desenvolvimento de novos métodos e técnicas. A introdução das capacidades dinâmicas na gestão estratégica apoia as organizações sem fins lucrativos no cumprimento dos seus objetivos através da criação de respostas inovadoras e tempestivas aos problemas. Assim sendo, a presente investigação tem como principal objetivo: analisar o desenvolvimento das capacidades dinâmicas na gestão estratégica das organizações sem fins lucrativos. No sentido de responder às questões de investigação foram realizados cinco casos de estudo (Caso A, B, C, D e E). Cada caso corresponde a uma organização distinta, na qual foram realizadas entrevistas dirigidas ao gestor da organização ou seus representantes. A análise de dados qualitativos revelou que a adaptação e aplicação de conceitos de gestão empresarial no setor não lucrativo orientam as organizações para a autonomia e a sustentabilidade. Por outro lado, o estudo empírico demonstrou que a sustentabilidade é efetivamente uma preocupação constante para a gestão das organizações sem fins lucrativos. Neste sentido, constatou-se que o desenvolvimento de capacidades dinâmicas no contexto destas organizações constitui um fator crítico de sucesso. O presente estudo demonstra que a existência destas capacidades potenciam a capacidade de resposta às necessidades do mercado no qual estas organizações operam. Devido às exigências da sociedade, estas organizações tendem a procurar diferentes soluções para diferentes problemas, não permitindo a estagnação da atividade nem a perda de valor de mercado fomentando assim o desenvolvimento das capacidades dinâmicas nas organizações sem fins lucrativos. Deste modo, a gestão estratégica encontra-se inevitavelmente ligada ao desenvolvimento de capacidades dinâmicas nas organizações sem fins lucrativos, pois, a estratégia tem como objetivo a valorização da organização e as capacidades dinâmicas permitem o cumprimento do mesmo com maior eficiência e eficácia. Em suma, verifica-se a relevância da gestão das organizações sem fins lucrativos e ainda a diversidade de estudos que ainda poderão ser realizados nesta área. In recent years non-profit organizations have been exposed to a dynamic market characterised by constant changes. In order to accomplish their goals and to survive, non-profit organisations need to provide efficient responses to the changes presented by the surrounding environment. Due to the decrease of state aid, the financial difficulties of these organizations have increased, raising the necessity of becoming financially sustainable. Therefore, it is essential to understand and analyse the strategic management of non-profit organizations as well as to analyse how these organizations are capable of create and modify its resources through the development of new methods and technics. The introduction of dynamic capabilities in strategic management supports non-profit organizations in the fulfilment of its goals through the creation of innovative and timely responses. Therefore, this research aims at analysing the development of dynamic capabilities in strategic management of non-profit organizations. In order to answer to the research questions, five study cases were performed (Case A, B, C, D and E). Each case corresponds to one organization only and the interviews were made to non-profit organisations’ CEO. The analysis of the qualitative data revealed that the application and adaptation of private management concepts into the non-profit sector are crucial to guide the organizations towards greater autonomy and sustainability. The sustainability is currently a constant concern for non-profit organizations’ management and therefore the application of the dynamic capabilities concept into the non-profit sector allows the organizations to develop themselves as well as respond in a fast and efficient manner to the necessities of the market. Due to increasing market challenges, these organizations tend to search for different solutions in order to solve different problems. The present study demonstrates that the dynamic capabilities are extremely important to foster non-profit organization’s sustainability, by not allowing stagnation of the activity nor loss of market value. Thus, the strategic management is necessarily bound to the development of the dynamic capabilities into non-profit organizations. This means that the aim of the strategy is to add more value to the organization, so that the dynamic capabilities can play an important role by providing greater efficiency and efficacy. Moreover, this research demonstrates the relevance of management for non-profit organisations while reinforces the need of further studies into this subject. Dissertação de mestrado em Administração Pública (área de especialização em Gestão Pública e Políticas Públicas)

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Barbosa, Sílvia Costa;

    A indústria da moda é a segunda maior poluidora industrial depois da aviação, respondendo por até 10 % da poluição global. No entanto, apesar desse impacto ambiental amplamente divulgado, a indústria continua a crescer, em parte devido ao surgimento da fast fashion, que depende da mão de obra de baixo custo, do consumo excessivo e de vestuário de curta duração. Posto isto, é essencial que haja uma desaceleração da produção, de volta para a slow fashion, a introdução de práticas sustentáveis por toda a cadeia de abastecimento e uma mudança no comportamento do consumidor. A presente dissertação contribuiu para a melhoria da sustentabilidade da Sonae Fashion, onde o principal objetivo foi o apoio na definição da estratégia de melhoria e no desenvolvimento de modelo negócio para o plástico e denim responsável. Em relação ao denim da marca Salsa, foi necessário analisar a sua rastreabilidade (pegada ambiental, logística, geografia), estudar benchmarks de denim sustentável e responsável, e desenvolver um plano de alternativas mais sustentável. Relativamente aos plásticos das marcas MO, Zippy e Salsa, foi necessário analisar todo o plástico das lojas, desde a sua chegada à loja até à sua saída, quantificar, tipificar e cadastrar os tipos de plásticos, estudar alternativas para reduzir o seu consumo e apoiar a definição de estratégia e modelo de negócio para a sustentabilidade, circularidade e reciclagem do plástico. Concluiu-se, em relação ao denim, que 1 par de calças de ganga 100 % algodão consome 2 096 L de água, 760 g de algodão, 3,31 g de soluções químicas, 3,36 g de hipoclorito de sódio e 0,4 kg de pedra-pomes, necessita de uma área de 4,81 m2 , e tem uma pegada de carbono de, 6,01 kg. Através destes resultados foi possível desenvolver um modelo de negócio para tornar o denim ambientalmente mais responsável optando, por exemplo, pelo uso de cânhamo como matéria-prima, pela implementação de tecnologias de acabamento com menor consumo de água e químicos e pela conscientização dos consumidores em relação aos seus impactos. Nos plásticos, após a quantificação e tipificação do plástico que chega ao consumidor final nas lojas MO e Zippy, foi possível concluir que no ano de 2019 o mais consumido foi o PEBD, cerca de 74 toneladas, e o segundo mais consumido foi o PVC, cerca de 39 toneladas. Para além disso, confirmou-se que o plástico gerado nas lojas MO, Zippy e Salsa, é corretamente tratado, sendo recolhido e encaminhado para a reciclagem. Com estes resultados, foi possível desenvolver um modelo de negócio para o plástico através da eliminação, substituição e reutilização das embalagens. The fashion industry is the second largest industrial polluter after aviation, accounting for up to 10 % of global pollution. Yet, despite this widely publicized environmental impact, the industry continues to grow, in part due to the rise of fast fashion, which relies on cheap labor, overconsumption and short lived clothing. That being said, it is essential that there is a slowdown in production, back to slow fashion, the introduction of sustainable practices throughout the supply chain and a change in consumer behavior. This dissertation contributed to improving Sonae Fashion's sustainability, where the main objective was to support the definition of the improvement strategy and the development of a business model for responsible plastic and denim. In relation to denim from the Salsa brand, it was necessary to analyze the traceability of denim (environmental footprint, logistics, geography), study sustainable and responsible denim benchmarks, and develop a plan of more sustainable alternatives. Regarding plastics of the MO, Zippy and Salsa brands, it was necessary to analyze all the plastic from the MO, Zippy and Salsa stores from its arrival at the store to its departure, quantify, typify and register the types of plastics, study alternatives to reduce the consumption and support the definition of a strategy and business model for the sustainability, circularity and recycling of plastic. It was concluded, in relation to denim, that 1 pair of 100 % cotton jeans consumes 2 096 L of water, 760 g of cotton, 3,31 g of chemical solutions, 3,36 g of sodium hypochlorite and 0,4 kg of pumice stone, needs an area of 4,81 m2 , and has a carbon footprint of about 6,01 kg. Through these results, it was possible to develop a business model to make denim more environmentally responsible, opting, for example, for the use of hemp as a raw material, for the implementation of finishing technologies with less consumption of water and chemicals and for the awareness of the consumers regardind their impacts. In plastics, after quantifying and typifying the plastic that reaches the final consumer at MO and Zippy stores, it was possible to conclude that in 2019 the most consumed was LDPE, around 74 tons, and the second most consumed was PVC, about 39 tons. Furthermore, it was confirmed that the plastic generated in the MO, Zippy and Salsa stores is correctly treated, being collected and sent for recycling. With these results, it was possible to develop a business model for plastic through the elimination, replacement and reuse of packaging. Dissertação de mestrado integrado em Engenharia Biológica

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Universidade do Minho: RepositoriUM
    Other ORP type . 2021
    License: CC BY NC ND
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Universidade do Minho: RepositoriUM
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Abreu, Carla Sofia Faria;

    Este relatório de estágio centra-se no tema da divulgação de informação sobre responsabilidade social por parte das empresas, apresentando como objetivos: perceber que informação sobre responsabilidade social é divulgada, como e onde; entender quais as motivações que levam à sua divulgação; e compreender quais os efeitos sentidos da divulgação de informação sobre a sua responsabilidade social. O estágio desenvolvido visa também cumprir com os requisitos previstos no artigo 9.º do RIEEP da OCC. Atendendo aos objetivos delineados, é adotada uma metodologia qualitativa que assenta numa perspetiva interpretativa e considera como enquadramento teórico a legitimidade. Na sequência, opta-se por um estudo de caso único e exploratório. A escolha deste caso justifica-se pelo facto de o estágio curricular ter sido realizado no Grupo, para quem a responsabilidade social e a sua divulgação não é indiferente. É desenvolvida uma análise documental descritiva aos Relatórios e Contas consolidadas dos anos de 2016 e de 2017 e ao site do Grupo, complementada com a análise das entrevistas semiestruturadas realizadas a quatro pessoas designadas pelo Grupo, relacionadas ao tema em estudo. Atendendo à análise descritiva realizada aos documentos de Prestação de Contas e ao site da empresa, constata-se que os conteúdos são selecionados tendo em conta o canal de comunicação. No entanto, quer nos Relatórios e Contas Consolidadas quer no site da empresa, a informação é apresentada de forma narrativa e descrita de modo sintetizado. As principais motivações da divulgação de informação de responsabilidade social devemse ao facto de a empresa não querer transmitir uma imagem unicamente preocupada com fins lucrativos, a sensibilização dos colaboradores e o aumento da sua dimensão, nos últimos anos. Existe a perceção de que a divulgação contribuiu com um efeito positivo, quer ao nível dos clientes quer ao nível das empresas locais. This internship report focuses on the issue of corporate social responsibility information disclosure by companies, with the following goals: to perceive what kind of social responsibility information is disclosed, how and where; to understand the motivations that lead to its disclosure; and to understand the perceived effects of the information disclosure about social responsibility. This internship also aims to comply with the requirements of Article 9 of the OCC RIEEP. Considering the outlined goals, a qualitative methodology based on an interpretive perspective and that considers the legitimacy as a theoretical framework was adopted. Subsequently, a single exploratory case study was chosen. The choice of this case is justified by the fact that the curricular internship has been carried out in the Group, an institution that is not indifferent to social responsibility and its disclosure. A documental analysis describing the consolidated Reports and Accounts of the years 2016 and 2017 and the Group's website was developed and complemented by the analysis of the semi-structured interviews conducted in the Group, related to the study issue. Based on the descriptive analysis performed, it is shown that the contents are selected taking into account the communication channel. However, both in the Consolidated Reports and Accounts and in the company’s website, the information is presented in a narrative form and described in a synthesized way. The main motivations for the social responsibility information disclosure are the fact that the company doesn’t want to convey a purely profit-oriented image, the will to raise awareness amongst employees and the company’s growth in recent years. There is a perception that disclosure has had a positive effect both in clients and local companies. Relatório de estágio de mestrado em Contabilidade

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    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Freitas, Manuela Pereira de;

    As telas publicitárias são continuamente utilizadas na promoção de eventos, concertos, atividades políticas, informativas, campanhas de marketing visíveis em vários locais. No entanto, qual o seu destino quando o tema publicitado expira? Na tentativa de dar uma nova vida às telas publicitárias foram procuradas modos de as reutilizar de forma sustentável e útil. Uma forma de reutilização pode ser orientada para o benefício de várias entidades e instituições dadas as propriedades deste material. Neste projeto é feita uma abordagem ao design, à sustentabilidade, à necessidade de inovação. A necessidade de receber ajuda de outrem leva a que os cidadãos (essencialmente idosos) procurem Serviços de Apoio Domiciliário (SAD) serviços prestados por Instituições Particulares de Solidariedade Social (IPSS) que facilitam a rotina diária, de modo a melhorar a sua qualidade de vida. Estes constam de manutenção, limpeza, refeições e incluído no serviço de SAD, deparamo-nos com a manutenção do vestuário dos utentes. Foram efetuados estudos de caso de modo a ter uma maior perceção do funcionamento do serviço e das necessidades existentes. O transporte do vestuário ocorre em dois momentos, quando este é recolhido da habitação do utente para manutenção (serviço de lavandaria do centro) e no sentido inverso. De modo a facilitar estas tarefas foram estudadas as embalagens utilizadas. Para tal foi concebido um produto passível de utilização em todo o ciclo do SAD tendo como material principal as telas publicitárias, procurando assim a conceção de um produto sustentável. Procedeu-se a várias estudos e prototipagem de uma embalagem que respondesse aos requisitos do serviço e que valorizasse o material utilizado. Concluiu-se assim que as telas publicitárias podem reutilizadas para este fim com sucesso. Advertising screens are continually being used in the promotion of events, concerts, political activities, informative, marketing campaigns visible in various locations. However, what is your destination when the advertised theme expires? In an attempt to give new life to the advertising screens, ways were sought to reuse them in a sustainable and useful way. One form of reuse can be targeted to the benefit of various entities and institutions given the properties of this material. In this project an approach is made to design, to sustainability and to the need for innovation. The need to receive help from others leads citizens (mainly the elderly) to seek home support services (SAD) services provided by Private Institutions of Social Solidarity (IPSS) that facilitates daily routine in order to improve their quality of life. These include maintenance, cleaning, meals and included in the SAD service, with the maintenance of the wearer's clothing. Case studies were carried out in order to better understand the functioning of the service and the existing needs. The transportation of the clothing takes place in two moments, when it is collected from the user's room for maintenance (center laundry service) and in the opposite direction. In order to facilitate these tasks packaging used was studied. For this purpose, a product that can be used throughout the SAD cycle was designed with advertising screens as the main material, thus seeking the design of a sustainable product. Several studies and prototyping of a package were carried out to meet the requirements of the service and to value the material used. Conclusions stand that advertising screens can be successfully reused for this purpose. Dissertação de mestrado em Design e Marketing

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Costa, Maria Isabel Ferreira da;

    São as empresas e as organizações em geral, os motores fundamentais da economia e da geração de riqueza e de valor, estando este valor não só associado aos seus produtos e serviços, mas também à forma como os desenvolvem e ao impacto que a sua atividade pode provocar. Numa adaptação aos novos tempos e às necessidades do mercado, as empresas estão cada vez mais conscientes do impacto que podem ter a nível económico, social e ambiental. A sustentabilidade pode ser vista como uma vertente estratégica, que permite às organizações otimizar as suas atividades e adotar uma postura de proatividade e de desenvolvimento sustentável. Contudo, para obter real sustentabilidade, não basta otimizar e reduzir, é também necessário aplicar estratégias e colocar em prática medidas de forma a garantir os níveis mínimos dos ativos ambientais, protegendo assim gerações futuras. Este estudo pretende responder à questão de investigação: “Como é que o relatório de sustentabilidade pode ser uma mais-valia para a indústria automóvel?", através de um caso de estudo na empresa Mário da Costa Martins. Pretende-se então compreender quais as práticas sustentáveis usadas na indústria automóvel, o que é possível melhorar e de que forma. No relatório de sustentabilidade, que esta dissertação pretende desenvolver, será aplicada a metodologia sugerida pela Global Reporting Initiative (GRI). Foi ainda proposta uma metodologia de análise inovadora que permite avaliar o desempenho de sustentabilidade da empresa através do relatório de sustentabilidade elaborado. Companies and organizations in general are the fundamental movers and shakers of the economy and responsible for much of the wealth, with this value not only associated with products and services that they provide, but also with the way they develop them and the impact that their activity can have on society. In order to adapt to new times and market needs, companies are increasingly aware of the impact they can have on an economic, social and environmental level. Sustainability can be seen as a strategic aspect, which allows organizations to optimize activities and adopt a proactive and sustainable stance towards development. However, to achieve real sustainability, it is not enough to optimize and cut costs, it is also necessary to apply strategies and put measures into practice in order to guarantee the minimum levels of environmental assets, thus protecting future generations. This study aims to answer the research question: "How can the sustainability report add value to the automotive industry?", through a case study at the company Mário da Costa Martins. This study focuses on sustainable practices already in practice in the automotive industry, what and how can things in MCM be improved. The methodology suggested by the Global Reporting Initiative (GRI) will be applied on the sustainability report, which this dissertation intends to develop. A new method to evaluate firms’ sustainability performance through sustainability report was developed and presented. Dissertação de mestrado em Economia Monetária Bancária e Financeira

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Universidade do Minho: RepositoriUM
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Universidade do Minho: RepositoriUM
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    Authors: Veiga, Bruno Miguel Salgueiro;

    Este relatório é o produto de um estágio curricular, realizado na Domingos da Silva Teixeira, DST, que teve por objetivo calcular a pegada de carbono da empresa e propor melhorias nas estratégias de redução das emissões de gases com efeito de estufa. As externalidades negativas relacionadas com a queima de combustíveis fósseis provocaram, desde a revolução industrial, o problema das alterações climáticas. Neste contexto, as empresas começam a integrar preocupações ambientais nas suas estratégias de negócio, por forma a serem mais eficientes. Uma ação de grande importância é o cálculo da pegada de carbono, que contabiliza toda a responsabilidade climática da organização. Neste trabalho, após o estabelecimento de uma parceria entre Universidade do Minho e a Research Feel, utilizou-se o Método Composto das Contas Financeiras (MC3) de Juan Luis Doménech, para cálculo da pegada de carbono, compatível com outras metodologias como a ISO 14069. Os resultados obtidos são divididos em emissões diretas do uso de combustíveis fósseis, que correspondem a cerca de 13% da pegada, ou 13 251 tCO2eq.; emissões indiretas provenientes do uso de energia, que respeitam a cerca de 4%, ou 4 456 tCO2eq.; e, por fim, outras emissões indiretas, sendo a grande fatia de 83% representativa da responsabilidade climática da DST, isto é, 88 110 tCO2eq. O terceiro âmbito pode, por vezes, ser encarado como responsabilidade climática dos utilizadores finais dos produtos. No entanto, optou-se pela referência completa dos resultados dado o enquadramento académico deste relatório e, também, porque reflete uma oportunidade para a DST lutar contra as alterações climáticas. A “hereditariedade” da pegada de produtos usados em projetos e serviços de fabricação ou construção da DST pode ser minimizada através do chamado efeito dominó em que a responsabilidade é deslocada para o verdadeiro causador, isto é, a cadeia de abastecimento da DST. Uma política de compras “verdes” é a principal medida que se conclui adotar de forma a reduzir a pegada de carbono da empresa. Outras melhorias indicadas, muitas já em implementação e de menor impacto, incluem a modificação do manual de boas práticas para os colaboradores da DST, uma maior aposta na utilização de energias renováveis e a eventual modificação do parque automóvel. Estas deverão ser aplicadas de forma gradual, promovendo o uso eficiente de todos os recursos, trazendo benefícios significativos a médio prazo, tornando a empresa mais sustentável. This report is the product of a curricular internship, held at Domingos da Silva Teixeira, DST, which aimed to assess the company's carbon footprint and propose strategic improvements to reduce greenhouse gas emissions. The negative externalities related to the burning of fossil fuels have, since the industrial revolution, caused the problem of climate change. In this context, companies are beginning to integrate environmental concerns into their business strategies in order to become more efficient. One important action is the calculation of the carbon footprint, which accounts for all the climatic responsibility of the organization. In this work, after the establishment of a partnership between University of Minho and Research Feel, Juan Luis Doménech's Compound Method of Financial Accounts (MC3) was used to calculate the carbon footprint, compatible with other methodologies such as ISO 14069. The results obtained are divided into direct emissions from the use of fossil fuels, corresponding to about 13% of the footprint, or 13,251 tCO2eq; indirect emissions from energy use, which account for approximately 4%, or 4,456 tCO2eq; and finally, to other indirect emissions, with the large share of 83% of the climatic responsibility belonging to DST, that is, 88 110 tCO2eq. The third scope can sometimes be seen as the climatic liability of the final users of the products. However, the full reference of the results was chosen given the academic framework of this report and because it reflects an opportunity for DST to fight against climate change. The "inheritance" of the footprint of products used in DST manufacturing or construction projects and services can be minimized through the so-called domino effect in which responsibility is shifted to the true causer, i.e. the DST supply chain. A "green" purchasing policy is thus the main measure that has been found to reduce the company's carbon footprint. Other improvements, many already under implementation and of lesser impact, include the modification of the best practices’ manual for DST employees, a greater focus on the use of renewable energies, and possible alteration of the fleet. These should be applied gradually, promoting the efficient use of all resources, bringing significant benefits in the mid-term, and making the company more sustainable. Relatório de estágio de mestrado em Economia Industrial e da Empresa

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    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Pereira, André Filipe Teixeira;

    In response to an ever increasing demand for electricity and the desire for environmentally friendly energy sources, new policies have emerged to produce "green" energy from renewable sources. Many of the initial investments were made in wind energy, solar energy, biomass energy, geothermal energy, among others, that allow a little pollution or in certain cases no pollution at all. Although human power is not enough to sustain a massive power grid, it has the potential to charge electronic devices such as iPod's, music players and mobile phones. The process of energy harvesting consists of using environmental energy to supply primarily (but not exclusively) electricity to small mobile devices, either electrical or electronic. This process should be free of maintenance and have a high durability, reducing the need for batteries. The human movement is characterized by movements of large amplitude at low frequencies and some level of impact in the area of the foot heel during walking. These impacts send shock waves through the human body which are rapidly absorbed by the articulations. Studies have demonstrated that, on average, an individual with 68 kg walking at a speed of 2 steps per second and with a vertical movement of the heel of 5 cm is capable of generating 67 W of energy [1]. The transducers energy devices can be placed in different locations of the human body, may be in clothing, shoes, a waist bag, a backpack, among others. Nevertheless, the amplitude, frequency and nature of the vibration can be quite different in different locations of the body. There are several types of generators that allow capture and transform the human motion into electrical energy such as inertial, piezoelectric, electrostatic and electromagnetic generators. There are several types of generators that allow to capture and transform the human motion into electrical energy such as inertial, piezoelectric, electrostatic and electromagnetic generators. In this project it was decided to use the electromagnetic generator because it is the one that best adapts to the capture of human movement and the vibration of the same. Furthermore, it is the most efficient, because humans’ movements cause a variation in the magnetic field of an inductor, which in turn will produce a current. The problem that this project proposes to solve consists in designing a system to capture energy generated by human activity in order to detect, capture and convert (specifically walking or running) the human motion into electricity which can be used as and provide a portable power source. In the end of this project, it is concluded that the energy captured through human action and transformed into renewable energy is viable presenting, however, very low power values produced. Em resposta ao aumento da procura de eletricidade e ao desejo de fontes energéticas ambientalmente amigáveis, têm surgido novas políticas de produzir energia “verde” de uma forma rentável a partir de fontes de energia renováveis. Muitos dos investimentos iniciais foram realizados em energia eólica, energia solar, energia de biomassa, energia geotérmica, entre outras, que permitem pouca ou nenhuma poluição. Embora a energia humana não seja suficiente para sustentar uma rede elétrica massiva, tem potencial para carregar dispositivos eletrónicos como iPod’s, leitores de música e telefones móveis. O processo de captação de energia consiste em usar a energia ambiental para fornecer primariamente (mas não exclusivamente) eletricidade a pequenos dispositivos móveis, sejam esses elétricos ou eletrónicos. Este processo deverá ser isento de manutenções e possuir uma durabilidade elevada, reduzindo assim a necessidade de baterias. O movimento humano é caracterizado por movimentos de grande amplitude a baixas frequências e algum grau de impacto na zona do calcanhar do pé durante uma caminhada. Estes impactos enviam ondas de choque através do corpo humano sendo rapidamente absorvidos pelas articulações. Estudos demonstraram que, em média, um indivíduo de 68 kg que caminha à velocidade de 2 passos por segundo e com um movimento vertical de calcanhar de 5 cm é capaz de gerar 67 W de energia [1]. Os dispositivos transdutores de energia podem ser colocados em diferentes locais do corpo humano seja no vestuário, no calçado, numa bolsa de cintura, numa mochila, entre outros. Porém a amplitude, a frequência e a natureza da vibração podem ser bastante diferentes em locais do corpo distintos. Existem vários tipos de geradores que permitem captar e transformar o movimento humano em energia elétrica tais como os geradores inerciais, piezoelétricos, eletrostáticos e eletromagnéticos. Neste projeto optou-se por utilizar o gerador eletromagnético pois é o que mais se adapta à captação dos movimentos humanos e vibração dos mesmos, também porque é o mais eficiente visto que o ser humano ao movimentar-se provoca uma variação no campo magnético da bobina que por sua vez produzirá uma corrente. Este projeto apenas incidirá na captação de energia a partir de fontes vibracionais. Isto não significa que as fontes de energia vibracionais são a melhor opção na captação energética, mas apenas uma das soluções mais apropriadas para a autossustentabilidade e miniaturização de pequenos dispositivos. Terminado este projeto, conclui-se que a energia captada através da ação humana e transformada em energia elétrica renovável é viável apresentando, contudo, valores de potência produzida muito baixos. Dissertação de mestrado integrado em Engenharia Eletrónica Industrial e Computadores

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Monteiro, Vítor Duarte Fernandes;

    A aposta na mobilidade elétrica, principalmente em veículos elétricos (VEs), representa um novo paradigma de transporte tendo por base a mobilidade eficiente e sustentável. Como consequência, é também uma mais-valia para a independência dos custos do petróleo e para a redução das emissões de gases com efeito de estufa. Para que este novo paradigma de transporte seja uma alternativa viável face aos atuais veículos com motor de combustão interna, é espectável que os VEs tenham custos reduzidos, tanto ao nível da utilização como da produção e manutenção. Além disso, com a sua integração nas redes elétricas, é também espectável que a qualidade da energia elétrica não seja descurada. Assim, o projeto de investigação apresentado nesta tese enquadra-se na conjuntura atual de desenvolvimento científico e tecnológico da mobilidade elétrica. Neste contexto, são propostos novos modos de operação que permitem a integração dinâmica dos VEs na rede elétrica visando as smart grids, assim como novas topologias on-board e off-board para sistemas de carregamento de baterias de VEs. Hoje em dia, tipicamente, os VEs disponíveis comercialmente apenas permitem carregar as baterias através do modo de operação grid-to-vehicle (G2V). Nesta tese, os sistemas de carregamento de baterias de VEs desenvolvidos permitem operar em modo bidirecional, viabilizando o modo de operação vehicle-to-grid (V2G). Através dos modos de operação G2V e V2G, o VE pode atuar contextualizado com cenários colaborativos com a rede elétrica, i.e., como elemento consumidor, armazenador e fornecedor de energia, dando especial contributo à área de sistemas de armazenamento de energia das smart grids. Além disso, tendo em conta a evolução das smart homes e smart grids, nesta tese são propostos e validados experimentalmente novos modos de operação que representam novos desafios e oportunidades para a utilização do VE. Nesta tese é proposto o modo de operação home-to-vehicle (H2V), que é referente ao controlo dos modos de operação G2V e V2G em função das cargas da casa onde o VE está conectado. É proposto o modo de operação vehicle-for-grid (V4G), que está relacionado com a evolução das smart homes nas smart grids, e é referente à utilização do VE para mitigar problemas de qualidade da energia elétrica (fator de potência e harmónicas de corrente), durante os modos de operação G2V e V2G, ou mesmo fora dos períodos de operação nestes modos. É também proposto o modo de operação vehicle-to-home (V2H), que está relacionado com a evolução das smart homes nas smart grids, e é referente à utilização do VE como fonte de tensão independente ou como fonte de tensão ininterrupta, semelhante a uma uninterruptible power supply (UPS) do tipo off-line. Além da contextualização com estes modos de operação, os sistemas de carregamento de baterias propostos podem também operar em colaboração com fontes de energia renováveis, contribuindo para a integração ativa destes veículos na rede elétrica. Além dos modos de operação, nesta tese estão também propostas novas topologias para sistemas de carregamento de baterias de VEs on-board e off-board. O sistema de carregamento de baterias de VEs on-board é composto por um conversor CA-CC front-end do tipo multinível para interface com a rede elétrica, e por um conversor CC-CC back-end do tipo interleaved para interface com as baterias do VE. Por outro lado, o sistema de carregamento de baterias de VEs off-board é composto por um conversor CA-CC front-end do tipo interleaved para interface com a rede elétrica, e por um conversor CC-CC back-end bidirecional de três níveis para interface com as baterias do VE. Além dos sistemas de carregamento de baterias de VE on-board e off-board, nesta tese é também proposto um sistema integrado de carregamento de baterias e de interface com fonte de energia renovável. Este sistema integrado é composto por um conversor CA-CC front-end full-bridge para interface com a rede elétrica e por dois conversores CC-CC back-end half-bridge para interface com as baterias do VE e com a fonte de energia renovável. As topologias dos sistemas de carregamento de baterias de VE on-board e off-board, assim como do sistema integrado, estão validadas através de resultados de simulação e através de resultados experimentais, obtidos com os protótipos desenvolvidos no âmbito desta tese. The focus on electric mobility, especially in electric vehicles (EVs) represents a new transport paradigm based on the efficient and sustainable mobility. As consequence, it is also an asset for the independence of oil costs and for the reduction of emissions of greenhouse gases. In order to obtain real benefits from this new transportation paradigm in counterpart of the traditional vehicles with internal combustion engine, it is expected that the EVs will have reduced costs, both in terms of usage as production and maintenance. Moreover, with the EVs integration in the power grids, it is also expected that the power quality is not neglected. Thus, the research project presented in this thesis is framed with the current situation of scientific and technological development for electric mobility applications. In this context, are proposed new operating modes that enable the dynamic integration of EVs into the power grids targeting smart grids, as well as new topologies of on-board and off-board EV battery charging systems. Nowadays, typically, the available EVs only allow charge the batteries through the grid-to-vehicle (G2V) operation mode. In this thesis, the developed EVs battery charging systems admit the bidirectional operation, also enabling the vehicle-to-grid (V2G) operation mode. Through the G2V and V2G, the EV can operate contextualized with collaborative scenarios with the power grid, i.e., capable of consuming, storing, and providing energy, representing a special contribution for the area of energy storage systems in the smart grids. Besides, taking into account the evolution of smart homes and smart grids, in the scope of this thesis are proposed, and experimentally validated, new operation modes that represent new challenges and opportunities for the EV usage. In this thesis is proposed the home-to-vehicle (H2V) operation mode, which is related with the dynamic control of the G2V and V2G modes according with the electrical appliances connected in the same installation. It is proposed the vehicle-for-grid (V4G) operation mode, which is related with the evolution of smart homes in the smart grids, and consists in the use of the EV battery charger to mitigate some power quality problems (power factor and current harmonics) during the G2V and V2G operation modes. It is also proposed the vehicle-to-home (V2H) operation mode, which is related with the evolution of smart homes in the smart grids, and consists in the use of the EV battery charger as voltage source in isolated systems or as an off-line uninterruptible power supply (UPS). Besides the contextualization with these operation modes, the proposed topologies for the EV battery charging systems can also operate in collaboration with renewable energy sources, contributing to their active integration into the power grid. Besides the aforementioned operation modes, in this thesis are also proposed new topologies of on-board and off-board EV battery charging systems. The on-board EV battery charging system is composed by a multilevel AC-DC front-end converter used to interface the power grid, and by an interleaved DC-DC back-end converter used to interface the EV batteries. On the other hand, the off-board EV battery charging system is composed by a three-phase interleaved AC-DC front-end converter used to interface the power grid, and by a bidirectional three-level DC-DC back-end converter used to interface the EV batteries. Besides the on-board and off-board EV battery charging systems, in this thesis is also proposed an integrated system to interface an EV and a renewable energy source with the power grid. This integrated system is composed by a full-bridge AC-DC front-end converter used to interface the power grid, and by two half-bridge DC-DC back-end converters used to interface the EV batteries and the renewable energy source. The topologies of the on-board and off-board EV battery chargers, as well as the integrated topology, are validated through simulations and experimental results obtained with the prototypes developed in the scope of this thesis. Parte dos trabalhos foram também suportados pelo COMPETE: POCI-01-0145-FEDER-007043 e pela FCT no âmbito do projeto: PEst-UID/CEC/00319/2013. Tese de Doutoramento Engenharia Eletrónica e de Computadores

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Alves, Cátia Filipa Veiga;

    The real time management paradigm implies real-time decision making and enable dynamic reconfiguration of enterprises. In some areas it is possible to find a number of real time management applications, while in manufacturing systems the real time management is still in initial research state. Also, there is a lack of research of scheduling problems considering larger size manufacturing systems. This project aims to validate the following hypotheses: (1) real time management paradigm is more suitable for production scheduling in ubiquitous production networks under conditions of dynamic environments than the fixed horizon and rolling horizon paradigms, and (2) Real time management paradigm contributes to economic and environmental sustainability. The validation was based on simulation, through secondary data collection, which was the base for conduction of all simulations for the validation process. It were investigated four scenarios for validation. The first case represented the case with secondary data (from literature), considering 8 jobs and 8 machines. The second case represented the case with data secondary data with variations, considering 150 jobs and 8 machines. The third case represented the case with data secondary data with variations, considering 180 jobs and 64 machines. The forth case represented the hybrid case of 8 jobs and 64 machines and 8 jobs and 200 machines. A kind of greedy algorithm was considered for the resources (machines) selection, i.e. for each resource selection the choice of the best resource is made at that time, not looking for forward solutions. The validation was carried out by two instruments for hypotheses validation, the original environment model and the original simulator developed. The results obtained for the described scenarios validates the hypotheses that the real time management scheduling paradigm is more suitable when compared with other production scheduling paradigms, and that the real time management contributes to the economic and environmental sustainability. This research contributed to the phenomenology of real time management in ubiquitous and cloud manufacturing systems under conditions of dynamic environments. Further, future work is considered to create new research projects under this topic. O paradigma de gestão em tempo real implica a tomada de decisão em tempo real e permite a reconfiguração dinâmica das empresas. Em algumas áreas é possível encontrar um número de aplicações da gestão em tempo real, enquanto nos sistemas de produção a gestão em tempo real ainda se encontra numa fase inicial de investigação. Existe ainda um falta de investigação nos problemas de escalonamento considerando sistemas de produção de tamanhos grandes. Este projeto tem como objetivo a validação das seguintes hipóteses: (1) o paradigma de gestão em tempo real é mais adequado para sistemas de produção em redes de produção ubíquas em condições de ambientes dinâmicos do que os paradigmas de horizonte fixo e horizonte rolante, e (2) o paradigma de gestão em tempo real contribui para a sustentabilidade económica e ambiental. A validação foi baseada em simulação, através da recolha de dados secundários, que serviram de base para condução de todas as simulações para o processo de validação. Para a validação foram investigados quatro senários: o caso com dados secundários (da literatura), considerando 8 jobs e 8 máquinas, o caso com dados secundários com variações, considerando 150 jobs e 64 máquinas, o caso com dados secundários com variações, considerando 180 jobs e 64 máquinas, e um caso hibrido considerando 8 jobs e 64 máquinas e 8 jobs e 200 máquinas. Um tipo de algoritmo guloso foi considerado para a seleção de recursos (máquinas), isto é, para cada seleção de recursos, a escola do melhor recurso é feita nesse momento, não olhando para soluções futuras. A validação foi realizada através de dois instrumentos para a validação de hipóteses, um modelo de ambiente original e um simulador original desenvolvido. Os resultados obtidos para os senários descritos validam as hipóteses de que o paradigma de gestão em tempo real é mais adequado quando comparado com outros paradigmas de escalonamento de produção, e que a gestão em tempo real contribui para a sustentabilidade económica e ambiental. Esta investigação contribuiu para a fenomenologia da gestão em tempo real em sistemas de produção ubíquos e cloud em condições de ambientes dinâmicos. Além disso, foi considerado trabalhos futuros para a criação de novos projetos de investigação sobre este tema. The PhD project had financial support from the FCT – Fundação para a Ciência e a Tecnologia – under the Doctoral grant number SFRH/BD/85672/2012. Doctoral Degree in Industrial and Systems Engineering

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Rocha, Ana Isabel da Silva;

    A procura pela sustentabilidade e inovação tem vindo a estimular a aplicação de polímeros de base renovável para reforço de filmes poliméricos, melhoria das propriedades de superfície de diversos substratos e aquisição de novas funcionalidades. O principal objetivo deste projeto foi o desenvolvimento de formulações ecossustentáveis capazes de melhorar a hidrofilicidade de substratos, para uma melhor impressão com tintas de base aquosa. A caracterização das formulações foi realizada no estado líquido - medição de viscosidade, avaliação da dispersão por microscopia ótica com luz polarizada e determinação do teor de sólidos, e no estado sólido – análise termogravimétrica (TGA) e espectroscopia de Infravermelho por Transformada de Fourier (FTIRATR). Os métodos utilizados para avaliar os substratos revestidos foram ângulos de contacto com água (CA), energia de superfície (SE), perfilometria e testes de impressão. Inicialmente foram realizados testes preliminares com formulações de bases poliméricas comerciais (Impranil® e Joncryl® aditivadas com α-celulose, NFC-Enzymatic e NFC-TEMPO, as quais foram posteriormente aplicadas nos substratos selecionados – PET, aglomerado de cortiça e PVC. Verificou-se alguma dificuldade no espalhamento aquando da sua aplicação na superfície do substrato, sendo necessário aumentar o efeito molhante das formulações. Adicionalmente, no processo de cura concluiuse que a melhor temperatura era 100 ºC. Pela análise da energia de superfície obtida para os substratos revestidos com as formulações concluiu-se que o substrato PVC foi o que obteve uma melhoria mais significativa em termos de hidrofilicidade. Para aumentar o efeito molhante prepararam-se novas formulações contendo um agente molhante – etanol. Nas formulações líquidas verificou-se uma diminuição da viscosidade e uma boa dispersão dos aditivos de base celulose. O PVC continuou a ser o substrato com melhores resultados quando analisados os ângulos de contacto com água e as energias de superfície. De modo a aumentar a viscosidade das formulações adicionou-se às formulações finais um agente espessante – hidroxietilcelulose (sob a forma de solução de Cellosize TM). Pela análise dos ângulos de contacto e das energias de superfície concluiu-se que o aditivo com melhores resultados foi a α-celulose, apesar desta aumentar significativamente a rugosidade da superfície dos substratos. Por sua vez, com os testes de impressão concluiu-se que o PET foi o substrato que promoveu melhores resultados, apesar de com todos se ter obtido uma boa impressão. The search for sustainability and innovation stimulates the application of the renewable polymers to reinforce polymeric coatings, improvement of the surface’s properties of different substrates and acquirement of new functionalities. The main objective of this thesis was the development of ecosustainable formulations capable of improving the hydrophilicity of substrates, towards a better print of water based inks. The characterization of the formulations was conducted in the liquid state – measurement of viscosity, evaluation of dispersion by optical microscopy with polarized light and determination of the solids’ content, and in the solid state – thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR-ATR). The methods used to evaluate the coated substrates were water contact angles (CA), surface energy (SE), perfilometry and printing tests. Initially, preliminary tests were conducted with commercial polymeric bases (Impranil® and Joncryl®) additivated with α-cellulose, NFC-Enzymatic and NFC-TEMPO, which formulations were then applied on selected substrates – PET, cork agglomerate and PVC. Some difficulty on the spreading was verified when these formulations were applied on the substrates’ surface, thus suggesting the need of increasing the wetting effect of the formulations. Additionally, in the thermal curing process it was concluded that the best temperature was 100 ºC. Through the surface energy analysis of the coated substrates with the formulations it was concluded that PVC exhibited a most significant improvement of hydrophilicity. To increase the wetting effect, new formulations were prepared using a wetting agent – ethanol. In the liquid formulations, a decrease of the viscosity and a good dispersion of the cellulose-based additive was found. Also in these conditions, PVC was found to be the best substrate according to the contact angles and surface energy results. In order to increase the formulations’ viscosity, a thickener agent was added – hydroxyethyl cellulose (in the form of CellosizeTM solution). Through the analysis of the contact angles and surface energy results it was concluded that the additive exhibiting the best performances was α-cellulose, despite the significant increase of the substrates surface roughness. Considering the printing tests, it was concluded that PET was the substrate that promoted the best results, although all the substrates performed well, i.e. exhibited a good printing. Dissertação de mestrado integrado em Engenharia Biológica (área de especialização em Tecnologia Química e Alimentar)

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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      This Research product is the result of merged Research products in OpenAIRE.

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