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description Publicationkeyboard_double_arrow_right Other literature type , Conference object , Article 2020 GermanyPublisher:DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany Weber, Malte; Geu Flores, Francisco; Raab, Dominik; Hefter, Harald; Jäger, Marcus; Siebler, Mario; Zietz, Dörte; Kecskeméthy, Andrés;doi: 10.17185/duepublico/71182 , 10.17185/duepublico/71215 , 10.17185/duepublico/71199 , 10.17185/duepublico/71193 , 10.17185/duepublico/71210 , 10.17185/duepublico/71202 , 10.17185/duepublico/71194 , 10.17185/duepublico/71213 , 10.17185/duepublico/71187 , 10.17185/duepublico/71181 , 10.17185/duepublico/71201 , 10.17185/duepublico/71203 , 10.17185/duepublico/71207 , 10.17185/duepublico/71214 , 10.17185/duepublico/71208 , 10.17185/duepublico/71209 , 10.17185/duepublico/71188 , 10.17185/duepublico/71180 , 10.17185/duepublico/71186 , 10.17185/duepublico/71185 , 10.17185/duepublico/71191 , 10.17185/duepublico/71196 , 10.17185/duepublico/71190 , 10.17185/duepublico/71205 , 10.17185/duepublico/71189 , 10.17185/duepublico/71198 , 10.17185/duepublico/71192 , 10.17185/duepublico/71200 , 10.17185/duepublico/71216 , 10.17185/duepublico/71217 , 10.17185/duepublico/71184 , 10.17185/duepublico/71206 , 10.17185/duepublico/71211 , 10.17185/duepublico/71195 , 10.17185/duepublico/71204 , 10.17185/duepublico/71197
doi: 10.17185/duepublico/71182 , 10.17185/duepublico/71215 , 10.17185/duepublico/71199 , 10.17185/duepublico/71193 , 10.17185/duepublico/71210 , 10.17185/duepublico/71202 , 10.17185/duepublico/71194 , 10.17185/duepublico/71213 , 10.17185/duepublico/71187 , 10.17185/duepublico/71181 , 10.17185/duepublico/71201 , 10.17185/duepublico/71203 , 10.17185/duepublico/71207 , 10.17185/duepublico/71214 , 10.17185/duepublico/71208 , 10.17185/duepublico/71209 , 10.17185/duepublico/71188 , 10.17185/duepublico/71180 , 10.17185/duepublico/71186 , 10.17185/duepublico/71185 , 10.17185/duepublico/71191 , 10.17185/duepublico/71196 , 10.17185/duepublico/71190 , 10.17185/duepublico/71205 , 10.17185/duepublico/71189 , 10.17185/duepublico/71198 , 10.17185/duepublico/71192 , 10.17185/duepublico/71200 , 10.17185/duepublico/71216 , 10.17185/duepublico/71217 , 10.17185/duepublico/71184 , 10.17185/duepublico/71206 , 10.17185/duepublico/71211 , 10.17185/duepublico/71195 , 10.17185/duepublico/71204 , 10.17185/duepublico/71197
Motiviert durch ein Anwendungsbeispiel wird die Komfortzone für mobile, kinematisch redundante Manipulatoren definiert. Die Lage und Orientierung der Basis des Manipulators und die Gelenkwinkel werden so gewählt, dass ausgesuchte Zielfunktionen minimal werden. Diese Zielfunktionen werden aus bekannten Maßen wie kartesische Geschwindigkeit, Kraft und Steifigkeit abgeleitet. Sie werden abhängig von den Parametern der Basis und den Gelenkwinkeln des Manipulators bestimmt, wobei nur ein Unterraum an möglichen Konfigurationen aufgrund der vorgegebenen Lage und Orientierung des Endeffektors (EE) für die Optimierung frei wählbar ist. Es werden im Sinne der multikriteriellen Optimierung Pareto-Fronten errechnet, welche durch vordefinierte Grenzen (z.B. minimale erreichbare Kraft oder minimale erreichbare Geschwindigkeit) begrenzt werden. Motivated by an application example, the comfort zone for mobile kinematically redundant manipulators is defined. The position and orientation of the mobile platform (=base of the manipulator) and the joint angles are selected in such a way that selected target functions are minimized. These objective functions are derived from known measures such as Cartesian velocity, force and stiffness. The objective functions are evaluated depending on the parameters of the base and the joint angles of the manipulator, whereby only a subspace of possible configurations is freely selectable for optimization due to the given position and orientation of the end effector (EE). Pareto-fronts are calculated in the sense of multi-criteria optimization, which are limited by, e.g., minimum achievable force or minimum achievable speed. IFToMM D-A-CH Konferenz, vol. 2020Sechste IFToMM D-A-CH Konferenz 2020: 27./28. Februar 2020, Campus Technik Lienz
University of Duisbu... arrow_drop_down University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71204Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71196Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71193Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71192Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71208Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71213Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71187Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71191Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71209Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71197Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71217Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BY ND SAFull-Text: https://doi.org/10.17185/duepublico/71186Data sources: Bielefeld Academic Search Engine (BASE)https://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY SAData sources: Datacitehttps://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY NC SAData sources: Datacitehttps://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY NC SAData sources: Datacitehttps://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY NC NDData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu11 citations 11 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert University of Duisbu... arrow_drop_down University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71204Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71196Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71193Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71192Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71208Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71213Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71187Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71191Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71209Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71197Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71217Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BY ND SAFull-Text: https://doi.org/10.17185/duepublico/71186Data sources: Bielefeld Academic Search Engine (BASE)https://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY SAData sources: Datacitehttps://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY NC SAData sources: Datacitehttps://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY NC SAData sources: Datacitehttps://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY NC NDData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Research 2022Publisher:DuEPublico Authors: Kasper, Leonie Kea;doi: 10.6104/dbsf-2022-01
Vor dem Hintergrund des künftig häufigeren und intensiveren Auftretens sowie der längeren Dauer von Extremwetterereignissen, die dem Klimawandel zugeschrieben werden, steigt die Relevanz von Extremwetterereignissen auch für Industrienationen. Gleichzeitig gilt die allgemeine Bereitschaft für Klimaschutzmaßnahmen als eher gering. Insofern knüpft dieser Beitrag1 einerseits an die politische Frage nach einem effektiven globalen Klimaschutz und andererseits an das gesellschaftliche Problembewusstsein für den Klimawandel an. Konkret wird der Frage nachgegangen, ob die Einschätzung des Klima- wandels als Gefährdung in Form von Extremwetterereignissen eine Rolle bei der Unterstützung politischer Maßnahmen zum Klimaschutz wie einem Preis für Treibhausgasemissionen spielt. Die zur Beantwortung verwendeten Konzepte basieren auf denen der Risikowahrnehmung und der Betroffenheit im Rahmen der Vulnerabilitätsanalyse. Empirisch wurde eine Sekundäranalyse mit mehreren binären, logistischen Regressionsmodellen auf Basis der Mikrodaten aus der 2. Welle der Umweltbewusstseinsstudie 2016 durchgeführt. Diese zeigten, dass (1) die generelle Unterstützung politischer Maßnahmen zum Klimaschutz in Deutschland ungewöhnlich hoch ist, und dass (2) eine stärkere wahrgenommene Gefährdung durch den Klimawandel eher zur Unter- stützung politischer Maßnahmen zum Klimaschutz führt. As there are likely to be more numerous, more intensive, as well as longer extreme weather events, their social relevance rises. At the same time, public support for climate mitigation is relatively low. Thus, this research focuses on first, the political question of effective global climate change mitigation and second the social perception or awareness of the climate change. More concrete, the question is about the role of perceived climate change risks in the form of extreme weather events in supporting climate change mitigation policies like a price for greenhouse gas emissions. The concepts used were derived from those of risk perception as well as consternation with reference to vulnerability analysis. Empirically, a secondary analysis with the method of the logistic regression and based on the data set of the second wave of the 2016 Umweltbewusstseinsstudie was conducted. They showed, that (1) in Germany the overall support of climate change policies is surprisingly high and (2) that a strong perceived climate change risk based on extreme weather events increases the probability of supporting those policies.
Social Science Open ... arrow_drop_down Social Science Open Access RepositoryResearch . 2022Data sources: Social Science Open Access Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
more_vert Social Science Open ... arrow_drop_down Social Science Open Access RepositoryResearch . 2022Data sources: Social Science Open Access Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis 2018 GermanyAuthors: Ochs, Andreas;Ein bekannter Satz von Milton Friedman lautet: „Social responsibility of business is to increase its profits.” Dass in marktwirtschaftlichen Systemen Unternehmen Profite realisieren müssen, ist unbestritten, jedoch verlangen hohe Umweltbelastungen, wachsende Rohstoffverbräuche und ein zunehmendes Umweltbewusstsein der Konsumenten, den Einbezug von ökologischen Aspekten in die Unternehmensentscheidungen. Gleichermaßen werden Diskussionen über Mindestlöhne, Fachkräftemangel und soziale Mindeststandards geführt, um die menschlichen Bedürfnisse in das soziale Bewusstsein der Unternehmen zu rufen. Diese ökono-mischen, ökologischen und sozialen Anforderungen sind an Unternehmen zu stellen und in einem unternehmensweiten, nachhaltig orientierten Managementsystem zu integrieren. Die zugrundeliegenden Konzepte werden allgemein mit den Begriffen Corporate Social Responsibility (CSR) bzw. Corporate Sustainability Performance Management (CSPM) bezeichnet, die als moralisches, verantwortliches Verhalten von Unternehmen gegenüber Gesellschaft und Umwelt definiert werden können. Im Vordergrund steht dabei nicht eine karitative Unternehmensethik, sondern eine Ausweitung ethischer Fragen auf das Kerngeschäft der Unterneh-men. Diese Definition zeigt, dass die Verfolgung von Nachhaltigkeitsaspekten nicht nur eine weitere Kostenbelastung für Unternehmen bedeutet, sondern eine Reihe von Potenzialen bereitstellt, die sich direkt z. B. anhand von Ressourcenein-sparungen im Produktionsbereich oder indirekt über das Unternehmensimage auswirken. Entscheidend ist jedoch, dass Nachhaltigkeitsanforderungen nicht nur strategischer Natur sind, sondern in allen Unternehmensbereichen und -ebenen implementiert werden. Dies erfordert ein integratives CSPM-Modell, das alle Aspekte von der Planung, über das Reporting, bis hin zur Analyse beinhaltet, um bestmögliche Entscheidungsunterstützung zu liefern. Das Rückgrat eines solchen CSPM-Modells bildet ein Datenmodell, das alle entscheidungsrelevanten Daten enthält, Prozesse abbildet und monetäre, ...
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis 2018 GermanyAuthors: Eickholt, Volker;Seit Beginn der industriellen Revolution im 18. Jahrhundert ist der Wohlstand und die wirtschaftliche Entwicklung fast aller Länder der Erde maßgeblich an die Nutzung fossiler Brennstoffe wie Öl, Kohle oder Gas gekoppelt. Bei deren Verbrennung werden jedoch Treibhausgase wie z.B. Kohlenstoffdioxid (CO2) freigesetzt, die wiederum den anthropogenen Klimawandel forcieren. Da sich CO2 nahezu gleichmäßig in der Atmosphäre verteilt, muss auch die nachhaltige Reduktion im Rahmen einer globalen Klimaschutzstrategie angegangen werden. Dem Elektrizitäts- und Wärmesektor kommt dabei eine tragende Rolle zu, da diesem Sektor ungefähr 50% der weltweiten CO2-Emissionen zuzuschreiben sind. Weitgehende CO2-Minderungsverpflichtungen bedingen jedoch deutliche Veränderungen innerhalb dieses Sektors und haben mittel- und langfristig einen kompletten Strukturwechsel (z.B. Zuwachs Erneuerbarer Energien, Nutzung von Speichertechnologien etc.) zur Folge. Eine Technologie, die beim Übergang zu einem 100% erneuerbaren Stromsektor helfen kann, ist die sogenannte Carbon Capture and Storage Technologie - kurz CCS. Dabei wird in Kohle- oder Gaskraftwerken das im Abgas enthaltene CO2 größtenteils abgeschieden, transportiert und letztendlich in unterirdischen Speichern endgelagert. Insbesondere rasant wachsende Volkswirtschaften wie China und Indien können damit bei der Stromerzeugung auf heimische und billige Brennstoffe wie Steinkohle zurückgreifen und trotzdem Emissionen in diesem Sektor signifikant reduzieren. Vor diesem Hintergrund werden in der vorliegenden Arbeit zunächst der aktuelle Wissensstand zur globalen Erwärmung dargestellt und erforderliche Klimaschutzstrategien zur Eindämmung diskutiert. Eine mögliche Nutzung der CCS-Technologie wird sowohl von den globalen Klimaschutzzielen und –strategien als auch von den jeweiligen nationalen bzw. supranationalen Energie- und Klimaschutzpolitiken beeinflusst. Darauf aufbauend wird die mögliche globale Diffusion der CCS-Technologie im Spannungsfeld von CO2-Reduktionspfaden, etablierten ...
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type 2022Publisher:Research Group Transient Spaces and Societies Authors: Liegl, Simon; Kaufmann, Katja; Bork-Hueffer, Tabea;doi: 10.34834/2019.0021
Blog Podcastserie der Vertiefungsrichtung des Masterstudiums Geographie der Universität Innsbruck
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis 2022 GermanyPublisher:DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany Authors: Höcker, Oliver;Capillary electrophoresis coupled with mass spectrometry (CE-MS) is a powerful technique in many fields of analytical chemistry, especially for the separation of charged molecules. However, the widespread standard sheath liquid interface lacks sensitivity which is why many studies and inventions have attempted improvement. Based upon two novel principles, a porous tip interface and nanoflow sheath liquid interface were developed to systematically study their performance compared to the standard sheath liquid interface. Both nanoflow interfaces showed similar improvements in sensitivity of 13 to 114 times over the standard interface for organic acids, peptides, and monoclonal antibodies. In these experiments, the nanoflow sheath liquid interface demonstrated higher versatility and easier manufacturing compared to the sheathless porous tip approach. Therefore, it was chosen for further technical improvement and application for trace analysis of drinking water and non-targeted metabolomics analysis. The characterization of its electrical current flows and resistances disproved the misconception that electroosmosis is the main driving force for the sheath liquid flow, as found in the literature. Improvements in handling and robustness were achieved by introducing a second capillary into the emitter for sheath liquid supply with a switching function for both capillaries. The resulting valve mechanism enabled a conditioning mode and separation mode. By this means, not only emitter lifetime and usability were strongly improved but also unique functions added, such as a divert to waste function for exclusion of MS interfering matrix components, online preconditioning with MS incompatible cleaning/coating agents, and the potential of online capillary isoelectric focusing with MS detection (CIEF-MS). This two-capillary nanoflow sheath liquid interface prototype was then applied for enrichment-free trace analysis and quantification of anionic micropollutants in drinking water. A CE-Orbitrap method with nanoflow interfacing was developed to enable the quantification of halogenated acetic acids down to the ng/L range, required to meet the strict WHO Guidelines for Drinking Water Quality. Seven drinking water samples from various production plants in Germany were analyzed and the quantitative results (0.1 to 6.2 ��g/L) verified by a validated liquid chromatography-MS (LC-MS) method, which emphasizes the strength of CE-MS as an alternative technique for the analysis of highly polar and ionic compounds in water. A subsequent suspect screening indicated the presence of halogenated methanesulfonic acids, which were identified and quantified by standard compounds (0.2 to 2.6 ��g/L). Reviewing the data, a screening revealed around 20 additional anionic suspects such as sweeteners, organic sulfonates, and sulfates as well as inorganic ions, which shows the perspective for non-targeted analysis and discovery of contaminants. Non-targeted screening can be used as an exploratory tool in many fields of application. In this context, of a workflow for the discovery of metabolites by LC- and CE-MS in bioreactors was implemented. Substrate samples of biogas plants for methane production were analyzed to uncover the differences in metabolite concentration in varying process conditions. This work strongly focused on evaluating the influence of different separation techniques, mass spectrometer instruments and data processing software on the outcome of a non-targeted analysis. The samples were separated by both capillary zone electrophoresis (CZE) and reversed phase LC (RPLC) coupled to time-of-flight (TOF) and Orbitrap mass spectrometers. The non-targeted data were processed with mzMine and XCMS and the resulting features prioritized by partial least square regression (PLSR), which enabled the distinction between high and low gas yield reactor conditions with ranking by Variable Importance in Projection (VIP). As expected, RPLC-MS and CZE-MS delivered complementary information but also good correlation between 10% of the commonly detected features regarding fold change and importance for the PLSR model. Unexpectedly, strong differences between data sets were observed between TOF and Orbitrap (<50% common features), which suggest a major influence on the discovery of biomarkers if different MS instrumentation is used. Between MZmine and XCMS, significant differences in the total number of features were found (<57% common features), despite having a good overlap for features which were prioritized by the VIP ranking (up to 95% common features). This indicates a comparable performance for finding true positive features, but also highlights the drawbacks of automated data processing tools which generate high numbers of false positive features. This work underlined the high complexity of non-targeted workflows, and it was clearly shown that different approaches and slight variations can have a strong impact on the final outcome. Overall, next generation nanoflow electrospray interfaces for CE-MS coupling offers a strong potential to establish new fields of application, by combining its strength for the separation of ionic compounds with high sensitivity detection. Yet, automation, affordable instrument parts and broad instrument compatibility are key to stimulate a broader use of CE-MS in the future. Hopefully, this thesis supports CE-MS as a technique on its way to become a more widely accepted technique, next to chromatography.
University of Duisbu... arrow_drop_down University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Doctoral thesis . 2022Full-Text: https://doi.org/10.17185/duepublico/75388Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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more_vert University of Duisbu... arrow_drop_down University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Doctoral thesis . 2022Full-Text: https://doi.org/10.17185/duepublico/75388Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Article 2019 GermanyPublisher:DuEPublico: Duisburg-Essen Publications Online, University of Duisburg-Essen, Germany Authors: Goudz, Alexander; Teriet, Jenny;Digitalisierung ist zu Zeiten des 21. Jahrhunderts ein unumgänglicher Prozess für Unternehmen, um langfristig wettbewerbsfähig bleiben zu können. Produktlebenszyklen werden zunehmend kürzer und Unternehmen müssen immer kurzfristiger auf äußere Einflüsse reagieren können. Allgemein beschreibt die Digitalisierung alle physischen Vorgänge, die mittels technischer Hilfsmittel unterstützt werden. Zur gegenwärtigen Situation hat eine Digitalisierung in den meisten Unternehmen nur in Ansätzen bzw. gar nicht stattgefunden. Aus diesem Grund werden unterschiedliche Konzepte herausgearbeitet, um die Supply Chain zu digitalisieren und somit Prozesse zu optimieren. Dabei geht es sowohl um die unternehmensinterne Wertschöpfungskette als auch die Wertschöpfung über die Unternehmensgrenzen hinaus. Es wurden unterschiedliche Ansätze herausgearbeitet und beispielhaft auf die Prozesse eines Automobilzulieferers angewendet. Es gibt eine Vielzahl unterschiedlicher Konzepte, die sich optimierend auf die Supply Chain auswirken. Diese Ansätze sind zum Beispiel Enterprise Mobility, Smart Products oder Smart Buildings. Im Allgemeinen kann einer digitalisierten Supply Chain eine große Bedeutung beigemessen werden, was es umso bedeutender für Unternehmen macht, Maßnahmen für Digitalisierungskonzepte zu implementieren.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Article 2016 GermanyPublisher:Institute for Advanced Sustainability Studies (IASS) Richter, Ina; Danelzik, Mathis; Molinengo, Giulia; Nanz, Patrizia; Rost, Dietmar;IASS Working Paper
University of Duisbu... arrow_drop_down University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2016License: CC BY SAFull-Text: https://doi.org/10.2312/iass.2016.002Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.2312/iass.2016.002&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 5 citations 5 popularity Average influence Average impulse Average Powered by BIP!
more_vert University of Duisbu... arrow_drop_down University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2016License: CC BY SAFull-Text: https://doi.org/10.2312/iass.2016.002Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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description Publicationkeyboard_double_arrow_right Other literature type , Conference object , Article 2020 GermanyPublisher:DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany Weber, Malte; Geu Flores, Francisco; Raab, Dominik; Hefter, Harald; Jäger, Marcus; Siebler, Mario; Zietz, Dörte; Kecskeméthy, Andrés;doi: 10.17185/duepublico/71182 , 10.17185/duepublico/71215 , 10.17185/duepublico/71199 , 10.17185/duepublico/71193 , 10.17185/duepublico/71210 , 10.17185/duepublico/71202 , 10.17185/duepublico/71194 , 10.17185/duepublico/71213 , 10.17185/duepublico/71187 , 10.17185/duepublico/71181 , 10.17185/duepublico/71201 , 10.17185/duepublico/71203 , 10.17185/duepublico/71207 , 10.17185/duepublico/71214 , 10.17185/duepublico/71208 , 10.17185/duepublico/71209 , 10.17185/duepublico/71188 , 10.17185/duepublico/71180 , 10.17185/duepublico/71186 , 10.17185/duepublico/71185 , 10.17185/duepublico/71191 , 10.17185/duepublico/71196 , 10.17185/duepublico/71190 , 10.17185/duepublico/71205 , 10.17185/duepublico/71189 , 10.17185/duepublico/71198 , 10.17185/duepublico/71192 , 10.17185/duepublico/71200 , 10.17185/duepublico/71216 , 10.17185/duepublico/71217 , 10.17185/duepublico/71184 , 10.17185/duepublico/71206 , 10.17185/duepublico/71211 , 10.17185/duepublico/71195 , 10.17185/duepublico/71204 , 10.17185/duepublico/71197
doi: 10.17185/duepublico/71182 , 10.17185/duepublico/71215 , 10.17185/duepublico/71199 , 10.17185/duepublico/71193 , 10.17185/duepublico/71210 , 10.17185/duepublico/71202 , 10.17185/duepublico/71194 , 10.17185/duepublico/71213 , 10.17185/duepublico/71187 , 10.17185/duepublico/71181 , 10.17185/duepublico/71201 , 10.17185/duepublico/71203 , 10.17185/duepublico/71207 , 10.17185/duepublico/71214 , 10.17185/duepublico/71208 , 10.17185/duepublico/71209 , 10.17185/duepublico/71188 , 10.17185/duepublico/71180 , 10.17185/duepublico/71186 , 10.17185/duepublico/71185 , 10.17185/duepublico/71191 , 10.17185/duepublico/71196 , 10.17185/duepublico/71190 , 10.17185/duepublico/71205 , 10.17185/duepublico/71189 , 10.17185/duepublico/71198 , 10.17185/duepublico/71192 , 10.17185/duepublico/71200 , 10.17185/duepublico/71216 , 10.17185/duepublico/71217 , 10.17185/duepublico/71184 , 10.17185/duepublico/71206 , 10.17185/duepublico/71211 , 10.17185/duepublico/71195 , 10.17185/duepublico/71204 , 10.17185/duepublico/71197
Motiviert durch ein Anwendungsbeispiel wird die Komfortzone für mobile, kinematisch redundante Manipulatoren definiert. Die Lage und Orientierung der Basis des Manipulators und die Gelenkwinkel werden so gewählt, dass ausgesuchte Zielfunktionen minimal werden. Diese Zielfunktionen werden aus bekannten Maßen wie kartesische Geschwindigkeit, Kraft und Steifigkeit abgeleitet. Sie werden abhängig von den Parametern der Basis und den Gelenkwinkeln des Manipulators bestimmt, wobei nur ein Unterraum an möglichen Konfigurationen aufgrund der vorgegebenen Lage und Orientierung des Endeffektors (EE) für die Optimierung frei wählbar ist. Es werden im Sinne der multikriteriellen Optimierung Pareto-Fronten errechnet, welche durch vordefinierte Grenzen (z.B. minimale erreichbare Kraft oder minimale erreichbare Geschwindigkeit) begrenzt werden. Motivated by an application example, the comfort zone for mobile kinematically redundant manipulators is defined. The position and orientation of the mobile platform (=base of the manipulator) and the joint angles are selected in such a way that selected target functions are minimized. These objective functions are derived from known measures such as Cartesian velocity, force and stiffness. The objective functions are evaluated depending on the parameters of the base and the joint angles of the manipulator, whereby only a subspace of possible configurations is freely selectable for optimization due to the given position and orientation of the end effector (EE). Pareto-fronts are calculated in the sense of multi-criteria optimization, which are limited by, e.g., minimum achievable force or minimum achievable speed. IFToMM D-A-CH Konferenz, vol. 2020Sechste IFToMM D-A-CH Konferenz 2020: 27./28. Februar 2020, Campus Technik Lienz
University of Duisbu... arrow_drop_down University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71204Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71196Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71193Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71192Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71208Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71213Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71187Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71191Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71209Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71197Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71217Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BY ND SAFull-Text: https://doi.org/10.17185/duepublico/71186Data sources: Bielefeld Academic Search Engine (BASE)https://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY SAData sources: Datacitehttps://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY NC SAData sources: Datacitehttps://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY NC SAData sources: Datacitehttps://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY NC NDData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu11 citations 11 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert University of Duisbu... arrow_drop_down University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71204Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71196Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71193Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71192Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71208Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71213Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71187Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71191Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71209Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020Full-Text: https://doi.org/10.17185/duepublico/71197Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BYFull-Text: https://doi.org/10.17185/duepublico/71217Data sources: Bielefeld Academic Search Engine (BASE)University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2020License: CC BY ND SAFull-Text: https://doi.org/10.17185/duepublico/71186Data sources: Bielefeld Academic Search Engine (BASE)https://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY SAData sources: Datacitehttps://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY NC SAData sources: Datacitehttps://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY NC SAData sources: Datacitehttps://dx.doi.org/10.17185/du...Other literature type . 2020License: CC BY NC NDData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Research 2022Publisher:DuEPublico Authors: Kasper, Leonie Kea;doi: 10.6104/dbsf-2022-01
Vor dem Hintergrund des künftig häufigeren und intensiveren Auftretens sowie der längeren Dauer von Extremwetterereignissen, die dem Klimawandel zugeschrieben werden, steigt die Relevanz von Extremwetterereignissen auch für Industrienationen. Gleichzeitig gilt die allgemeine Bereitschaft für Klimaschutzmaßnahmen als eher gering. Insofern knüpft dieser Beitrag1 einerseits an die politische Frage nach einem effektiven globalen Klimaschutz und andererseits an das gesellschaftliche Problembewusstsein für den Klimawandel an. Konkret wird der Frage nachgegangen, ob die Einschätzung des Klima- wandels als Gefährdung in Form von Extremwetterereignissen eine Rolle bei der Unterstützung politischer Maßnahmen zum Klimaschutz wie einem Preis für Treibhausgasemissionen spielt. Die zur Beantwortung verwendeten Konzepte basieren auf denen der Risikowahrnehmung und der Betroffenheit im Rahmen der Vulnerabilitätsanalyse. Empirisch wurde eine Sekundäranalyse mit mehreren binären, logistischen Regressionsmodellen auf Basis der Mikrodaten aus der 2. Welle der Umweltbewusstseinsstudie 2016 durchgeführt. Diese zeigten, dass (1) die generelle Unterstützung politischer Maßnahmen zum Klimaschutz in Deutschland ungewöhnlich hoch ist, und dass (2) eine stärkere wahrgenommene Gefährdung durch den Klimawandel eher zur Unter- stützung politischer Maßnahmen zum Klimaschutz führt. As there are likely to be more numerous, more intensive, as well as longer extreme weather events, their social relevance rises. At the same time, public support for climate mitigation is relatively low. Thus, this research focuses on first, the political question of effective global climate change mitigation and second the social perception or awareness of the climate change. More concrete, the question is about the role of perceived climate change risks in the form of extreme weather events in supporting climate change mitigation policies like a price for greenhouse gas emissions. The concepts used were derived from those of risk perception as well as consternation with reference to vulnerability analysis. Empirically, a secondary analysis with the method of the logistic regression and based on the data set of the second wave of the 2016 Umweltbewusstseinsstudie was conducted. They showed, that (1) in Germany the overall support of climate change policies is surprisingly high and (2) that a strong perceived climate change risk based on extreme weather events increases the probability of supporting those policies.
Social Science Open ... arrow_drop_down Social Science Open Access RepositoryResearch . 2022Data sources: Social Science Open Access Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
more_vert Social Science Open ... arrow_drop_down Social Science Open Access RepositoryResearch . 2022Data sources: Social Science Open Access Repositoryadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis 2018 GermanyAuthors: Ochs, Andreas;Ein bekannter Satz von Milton Friedman lautet: „Social responsibility of business is to increase its profits.” Dass in marktwirtschaftlichen Systemen Unternehmen Profite realisieren müssen, ist unbestritten, jedoch verlangen hohe Umweltbelastungen, wachsende Rohstoffverbräuche und ein zunehmendes Umweltbewusstsein der Konsumenten, den Einbezug von ökologischen Aspekten in die Unternehmensentscheidungen. Gleichermaßen werden Diskussionen über Mindestlöhne, Fachkräftemangel und soziale Mindeststandards geführt, um die menschlichen Bedürfnisse in das soziale Bewusstsein der Unternehmen zu rufen. Diese ökono-mischen, ökologischen und sozialen Anforderungen sind an Unternehmen zu stellen und in einem unternehmensweiten, nachhaltig orientierten Managementsystem zu integrieren. Die zugrundeliegenden Konzepte werden allgemein mit den Begriffen Corporate Social Responsibility (CSR) bzw. Corporate Sustainability Performance Management (CSPM) bezeichnet, die als moralisches, verantwortliches Verhalten von Unternehmen gegenüber Gesellschaft und Umwelt definiert werden können. Im Vordergrund steht dabei nicht eine karitative Unternehmensethik, sondern eine Ausweitung ethischer Fragen auf das Kerngeschäft der Unterneh-men. Diese Definition zeigt, dass die Verfolgung von Nachhaltigkeitsaspekten nicht nur eine weitere Kostenbelastung für Unternehmen bedeutet, sondern eine Reihe von Potenzialen bereitstellt, die sich direkt z. B. anhand von Ressourcenein-sparungen im Produktionsbereich oder indirekt über das Unternehmensimage auswirken. Entscheidend ist jedoch, dass Nachhaltigkeitsanforderungen nicht nur strategischer Natur sind, sondern in allen Unternehmensbereichen und -ebenen implementiert werden. Dies erfordert ein integratives CSPM-Modell, das alle Aspekte von der Planung, über das Reporting, bis hin zur Analyse beinhaltet, um bestmögliche Entscheidungsunterstützung zu liefern. Das Rückgrat eines solchen CSPM-Modells bildet ein Datenmodell, das alle entscheidungsrelevanten Daten enthält, Prozesse abbildet und monetäre, ...
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis 2018 GermanyAuthors: Eickholt, Volker;Seit Beginn der industriellen Revolution im 18. Jahrhundert ist der Wohlstand und die wirtschaftliche Entwicklung fast aller Länder der Erde maßgeblich an die Nutzung fossiler Brennstoffe wie Öl, Kohle oder Gas gekoppelt. Bei deren Verbrennung werden jedoch Treibhausgase wie z.B. Kohlenstoffdioxid (CO2) freigesetzt, die wiederum den anthropogenen Klimawandel forcieren. Da sich CO2 nahezu gleichmäßig in der Atmosphäre verteilt, muss auch die nachhaltige Reduktion im Rahmen einer globalen Klimaschutzstrategie angegangen werden. Dem Elektrizitäts- und Wärmesektor kommt dabei eine tragende Rolle zu, da diesem Sektor ungefähr 50% der weltweiten CO2-Emissionen zuzuschreiben sind. Weitgehende CO2-Minderungsverpflichtungen bedingen jedoch deutliche Veränderungen innerhalb dieses Sektors und haben mittel- und langfristig einen kompletten Strukturwechsel (z.B. Zuwachs Erneuerbarer Energien, Nutzung von Speichertechnologien etc.) zur Folge. Eine Technologie, die beim Übergang zu einem 100% erneuerbaren Stromsektor helfen kann, ist die sogenannte Carbon Capture and Storage Technologie - kurz CCS. Dabei wird in Kohle- oder Gaskraftwerken das im Abgas enthaltene CO2 größtenteils abgeschieden, transportiert und letztendlich in unterirdischen Speichern endgelagert. Insbesondere rasant wachsende Volkswirtschaften wie China und Indien können damit bei der Stromerzeugung auf heimische und billige Brennstoffe wie Steinkohle zurückgreifen und trotzdem Emissionen in diesem Sektor signifikant reduzieren. Vor diesem Hintergrund werden in der vorliegenden Arbeit zunächst der aktuelle Wissensstand zur globalen Erwärmung dargestellt und erforderliche Klimaschutzstrategien zur Eindämmung diskutiert. Eine mögliche Nutzung der CCS-Technologie wird sowohl von den globalen Klimaschutzzielen und –strategien als auch von den jeweiligen nationalen bzw. supranationalen Energie- und Klimaschutzpolitiken beeinflusst. Darauf aufbauend wird die mögliche globale Diffusion der CCS-Technologie im Spannungsfeld von CO2-Reduktionspfaden, etablierten ...
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type 2022Publisher:Research Group Transient Spaces and Societies Authors: Liegl, Simon; Kaufmann, Katja; Bork-Hueffer, Tabea;doi: 10.34834/2019.0021
Blog Podcastserie der Vertiefungsrichtung des Masterstudiums Geographie der Universität Innsbruck
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis 2022 GermanyPublisher:DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany Authors: Höcker, Oliver;Capillary electrophoresis coupled with mass spectrometry (CE-MS) is a powerful technique in many fields of analytical chemistry, especially for the separation of charged molecules. However, the widespread standard sheath liquid interface lacks sensitivity which is why many studies and inventions have attempted improvement. Based upon two novel principles, a porous tip interface and nanoflow sheath liquid interface were developed to systematically study their performance compared to the standard sheath liquid interface. Both nanoflow interfaces showed similar improvements in sensitivity of 13 to 114 times over the standard interface for organic acids, peptides, and monoclonal antibodies. In these experiments, the nanoflow sheath liquid interface demonstrated higher versatility and easier manufacturing compared to the sheathless porous tip approach. Therefore, it was chosen for further technical improvement and application for trace analysis of drinking water and non-targeted metabolomics analysis. The characterization of its electrical current flows and resistances disproved the misconception that electroosmosis is the main driving force for the sheath liquid flow, as found in the literature. Improvements in handling and robustness were achieved by introducing a second capillary into the emitter for sheath liquid supply with a switching function for both capillaries. The resulting valve mechanism enabled a conditioning mode and separation mode. By this means, not only emitter lifetime and usability were strongly improved but also unique functions added, such as a divert to waste function for exclusion of MS interfering matrix components, online preconditioning with MS incompatible cleaning/coating agents, and the potential of online capillary isoelectric focusing with MS detection (CIEF-MS). This two-capillary nanoflow sheath liquid interface prototype was then applied for enrichment-free trace analysis and quantification of anionic micropollutants in drinking water. A CE-Orbitrap method with nanoflow interfacing was developed to enable the quantification of halogenated acetic acids down to the ng/L range, required to meet the strict WHO Guidelines for Drinking Water Quality. Seven drinking water samples from various production plants in Germany were analyzed and the quantitative results (0.1 to 6.2 ��g/L) verified by a validated liquid chromatography-MS (LC-MS) method, which emphasizes the strength of CE-MS as an alternative technique for the analysis of highly polar and ionic compounds in water. A subsequent suspect screening indicated the presence of halogenated methanesulfonic acids, which were identified and quantified by standard compounds (0.2 to 2.6 ��g/L). Reviewing the data, a screening revealed around 20 additional anionic suspects such as sweeteners, organic sulfonates, and sulfates as well as inorganic ions, which shows the perspective for non-targeted analysis and discovery of contaminants. Non-targeted screening can be used as an exploratory tool in many fields of application. In this context, of a workflow for the discovery of metabolites by LC- and CE-MS in bioreactors was implemented. Substrate samples of biogas plants for methane production were analyzed to uncover the differences in metabolite concentration in varying process conditions. This work strongly focused on evaluating the influence of different separation techniques, mass spectrometer instruments and data processing software on the outcome of a non-targeted analysis. The samples were separated by both capillary zone electrophoresis (CZE) and reversed phase LC (RPLC) coupled to time-of-flight (TOF) and Orbitrap mass spectrometers. The non-targeted data were processed with mzMine and XCMS and the resulting features prioritized by partial least square regression (PLSR), which enabled the distinction between high and low gas yield reactor conditions with ranking by Variable Importance in Projection (VIP). As expected, RPLC-MS and CZE-MS delivered complementary information but also good correlation between 10% of the commonly detected features regarding fold change and importance for the PLSR model. Unexpectedly, strong differences between data sets were observed between TOF and Orbitrap (<50% common features), which suggest a major influence on the discovery of biomarkers if different MS instrumentation is used. Between MZmine and XCMS, significant differences in the total number of features were found (<57% common features), despite having a good overlap for features which were prioritized by the VIP ranking (up to 95% common features). This indicates a comparable performance for finding true positive features, but also highlights the drawbacks of automated data processing tools which generate high numbers of false positive features. This work underlined the high complexity of non-targeted workflows, and it was clearly shown that different approaches and slight variations can have a strong impact on the final outcome. Overall, next generation nanoflow electrospray interfaces for CE-MS coupling offers a strong potential to establish new fields of application, by combining its strength for the separation of ionic compounds with high sensitivity detection. Yet, automation, affordable instrument parts and broad instrument compatibility are key to stimulate a broader use of CE-MS in the future. Hopefully, this thesis supports CE-MS as a technique on its way to become a more widely accepted technique, next to chromatography.
University of Duisbu... arrow_drop_down University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Doctoral thesis . 2022Full-Text: https://doi.org/10.17185/duepublico/75388Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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more_vert University of Duisbu... arrow_drop_down University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Doctoral thesis . 2022Full-Text: https://doi.org/10.17185/duepublico/75388Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Article 2019 GermanyPublisher:DuEPublico: Duisburg-Essen Publications Online, University of Duisburg-Essen, Germany Authors: Goudz, Alexander; Teriet, Jenny;Digitalisierung ist zu Zeiten des 21. Jahrhunderts ein unumgänglicher Prozess für Unternehmen, um langfristig wettbewerbsfähig bleiben zu können. Produktlebenszyklen werden zunehmend kürzer und Unternehmen müssen immer kurzfristiger auf äußere Einflüsse reagieren können. Allgemein beschreibt die Digitalisierung alle physischen Vorgänge, die mittels technischer Hilfsmittel unterstützt werden. Zur gegenwärtigen Situation hat eine Digitalisierung in den meisten Unternehmen nur in Ansätzen bzw. gar nicht stattgefunden. Aus diesem Grund werden unterschiedliche Konzepte herausgearbeitet, um die Supply Chain zu digitalisieren und somit Prozesse zu optimieren. Dabei geht es sowohl um die unternehmensinterne Wertschöpfungskette als auch die Wertschöpfung über die Unternehmensgrenzen hinaus. Es wurden unterschiedliche Ansätze herausgearbeitet und beispielhaft auf die Prozesse eines Automobilzulieferers angewendet. Es gibt eine Vielzahl unterschiedlicher Konzepte, die sich optimierend auf die Supply Chain auswirken. Diese Ansätze sind zum Beispiel Enterprise Mobility, Smart Products oder Smart Buildings. Im Allgemeinen kann einer digitalisierten Supply Chain eine große Bedeutung beigemessen werden, was es umso bedeutender für Unternehmen macht, Maßnahmen für Digitalisierungskonzepte zu implementieren.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.17185/duepublico/47895&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Article 2016 GermanyPublisher:Institute for Advanced Sustainability Studies (IASS) Richter, Ina; Danelzik, Mathis; Molinengo, Giulia; Nanz, Patrizia; Rost, Dietmar;IASS Working Paper
University of Duisbu... arrow_drop_down University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2016License: CC BY SAFull-Text: https://doi.org/10.2312/iass.2016.002Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.2312/iass.2016.002&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 5 citations 5 popularity Average influence Average impulse Average Powered by BIP!
more_vert University of Duisbu... arrow_drop_down University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)Article . 2016License: CC BY SAFull-Text: https://doi.org/10.2312/iass.2016.002Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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