• Energy Research
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AbstractEuropean climate is associated with variability and changes in the mid-latitude atmospheric circulation. In this study, we aim to investigate potential future change in circulation over Europe by using the EURO-CORDEX regional climate projections at 0.11° grid mesh. In particular, we analyze future change in 500-hPa geopotential height (Gph), 500-hPa wind speed and mean sea level pressure (MSLP) addressing different warming levels of 1 °C, 2 °C and 3 °C, respectively. Simple scaling with the global mean temperature change is applied to the regional climate projections for monthly mean 500-hPa Gph and 500-hPa wind speed. Results from the ensemble mean of individual models show a robust increase in 500-hPa Gph and MSLP in winter over Mediterranean and Central Europe, indicating an intensification of anticyclonic circulation. This circulation change emerges robustly in most simulations within the coming decade. There are also enhanced westerlies which transport warm and moist air to the Mediterranean and Central Europe in winter and spring. It is also clear that, models showing different responses to circulation depend very much on the global climate model ensemble member in which they are nested. For all seasons, particularly autumn, the ensemble mean is much more correlated with the end of the century than most of the individual models. In general, the emergence of a scaled pattern appears rather quickly.

Due to resource constraints in wireless sensor networks (WSNs), energy consumption and networks' lifetime are considered significant challenges. Because sensors have a tiny battery and cannot be charged again. In WSN, collected data is usually transferred to the Base station (BS) directly or hop-by-hop. Therefore, load balancing and routing are one of the main issues in the WSN. This paper proposes a new routing scheme with load-balancing capability using the Markov Model (MM) and the Artificial Bee Colony (ABC) algorithm. LEACH algorithm is used to maintain load balancing between Cluster Heads (CHs). Then the Markov Model and the Artificial Bee Colony (MMABC) algorithm were used to find the best candidate nodes of each cluster to be turned into a CH. The simulation results in MATLAB software demonstrated that the proposed method surpasses the compared methods in terms of energy efficiency, number of alive nodes, and the number of delivered packets to BS and CH. European Union [861219]; Marie Curie Actions (MSCA) [861219] Funding Source: Marie Curie Actions (MSCA) This study has been conducted under the project Mobility and Training for beyond 5G ecosystems (MOTOR5G)'. The project has received funding from the European Union's Horizon 2020 program under the Marie Sklodowska Curie Actions (MSCA) Innovative Training Network (ITN) having grant agreement No. 861219.

Bu çalışmanın amacı, literatürde bâkir kalan, yönetim tarihi ve yönetim felsefesinde etkili olan ideolojik yaklaşımları eleştirel bakış açısıyla ortaya çıkarmaktır. İdeolojiler toplum düzenini korumaya hizmet eden düşünce sistemleri ve toplumdaki baskın ya da yönetici grubun çıkarlarının kabaca ifade etme şeklidir. Bununla birlikte ideolojiler, kendi zamanının siyasi ve iktisadi eğilimlerine uygun olması dolayısıyla onları desteklemek ve meşrulaştırmak mecburiyetindedir. Bunu başarabilmesi de mevzuubahis olan eğilimlerle örtüşen telkinleri, ahlaki ilkeleri ve kıymet hükümlerini inşa etmek; insanları bu ilke ve kıymet hükümlerine uygun davranmaya yönlendirmekle olasıdır. Bu doğrultuda, yönetim düşüncesinin bilimsel nitelik kazanmasında önemli katkısı olan bilimsel yönetim yaklaşımının farklı bir perspektiften ele alınarak, yönetim tarihi çalışmalarına katkı sağlamak amaçlanmıştır. Bilimsel yönetim, içinde bulunduğu çevre koşullarından ve belli durumsallıklardan etkilenip şekillenmiştir. Literatür iz sürme metodu ile taranarak, bilimsel yönetiminin içinde doğduğu toplumsal, ekonomik ve düşünsel zemin göz önünde bulundurularak Taylorizm-Darwinizm-Sosyal Darwinizm ilişkisi ve bu ilişkide rol alan yönetim teorisyenlerin etkileşmeleri eleştirel bir perspektiften ele alınarak incelenmiştir. Bu inceleme sonucunda; verimliliği geliştirmek ve üretimi artırmak üzerine inşa edilen bilimsel yönetim düşüncesi göz önüne alındığında; Sosyal Darwinizmin determinist ve mutlak kuralcı yaklaşımının bilimsel yönetimin çerçevesini oluşturmak için uygun zemin hazırladığı ve bilimsel yönetimin gelişiminde etkili olduğu görülmüştür.

A search is presented for charged, long-lived supersymmetric particles in final states with one or more disappearing tracks. The search is based on data from proton-proton collisions at a center-of-mass energy of 13 TeV collected with the CMS detector at the CERN LHC between 2016 and 2018, corresponding to an integrated luminosity of 137  fb−1. The search is performed over final states characterized by varying numbers of jets, b-tagged jets, electrons, and muons. The length of signal-candidate tracks in the plane perpendicular to the beam axis is used to characterize the lifetimes of wino- and Higgsino-like charginos produced in the context of the minimal supersymmetric standard model. The dE/dx energy loss of signal-candidate tracks is used to increase the sensitivity to charginos with a large mass and thus a small Lorentz boost. The observed results are found to be statistically consistent with the background-only hypothesis. Limits on the pair-production cross section of gluinos and squarks are presented in the framework of simplified models of supersymmetric particle production and decay, and for electroweakino production based on models of wino and Higgsino dark matter. The limits presented are the most stringent to date for scenarios with light third-generation squarks and a wino- or Higgsino-like dark matter candidate capable of explaining the observed dark matter relic density. © 2024 CERN, for the CMS Collaboration 2024 CERN

This study presents the case of a Metropolitan Municipality in the Aegean Region of Turkey, which undertook a series of initiatives to conduct projects on environmental protection and sustainability. This case study was conducted as two separate studies as a part of Horizon 2020-funded ECHOES project under Work Package 6, aiming to gain insight into the collective magnitudes of energy-related choices and behavior. The starting point of the process is marked, in 2015, by the municipality becoming a party to the Covenant of Mayors movement, joining around 8,000 signatories from over 50 countries. In line with European Union’s (EU’s) climate targets and associated energy-related policies, signatories of the Covenant of Mayors aim to decrease carbon emissions by 20% by 2020 and by 40% by 2030. In order to enhance the design and operationalization of policies for achieving these targets, each partner in the Covenant of Mayors is required to develop a Sustainable Energy Action Plan (SEAP). The SEAP is to be prepared within 2 years of becoming a party to the Covenant of Mayors and involves action plans and projects in order to operationalize the strategies for achieving the associated targets. To this end, this study analyzes the Metropolitan Municipality’s SEAP and its components, which include zero-emission public transportation project, transformation of existing buildings to a more energy-efficient standard and related energy audit studies, a project for decreasing waiting periods in traffic via a Smart Traffic System, a pedestrianization project, and a project for increasing the use of geothermal energy for district heating. This study set out to identify the internal and external factors, as well as bottom-up and top-down mechanisms involved in various phases of the preparation and implementation of the SEAP. The research method was expert interviews, incorporating viewpoints and perceptions of stakeholders from different levels of the municipality. Among the key results are understanding the roles of enthusiasts and frontrunners in such initiative and the importance of top-management and central government support.