5916 research outputs found
Sort by
Measurement of simplified template cross sections of the Higgs boson produced in association with W or Z bosons in the H → bb decay channel in proton-proton collisions at √s=13 TeV
No full textDifferential cross sections are measured for the standard model Higgs boson produced in association with vector bosons ((Formula presented), (Formula presented)) and decaying to a pair of (Formula presented) quarks. Measurements are performed within the framework of the simplified template cross sections. The analysis relies on the leptonic decays of the (Formula presented) and (Formula presented) bosons, resulting in final states with 0, 1, or 2 electrons or muons. The Higgs boson candidates are either reconstructed from pairs of resolved (Formula presented)-tagged jets, or from single large-radius jets containing the particles arising from two (Formula presented) quarks. Proton-proton collision data at (Formula presented), collected by the CMS experiment in 2016-2018 and corresponding to a total integrated luminosity of (Formula presented), are analyzed. The inclusive signal strength, defined as the product of the observed production cross section and branching fraction relative to the standard model expectation, combining all analysis categories, is found to be (Formula presented). This corresponds to an observed (expected) significance of 6.3 (5.6) standard deviations.SC (Armenia), BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES and BNSF (Bulgaria); CERN; CAS, MoST, and NSFC (China); MINCIENCIAS (Colombia); MSES and Croatian Science Foundation (CSF, Croatia); Research and Innovation Foundation (RIF, Cyprus); SENESCYT (Ecuador); Ministry of Education and Research (MoER), ERC PUT and ERDF (Estonia); Academy of Finland, Finnish Ministry of Education and Culture (MEC), and Helsinki Institute of
Physics (HIP, Finland); CEA and CNRS/IN2P3 (France); SRNSF (Georgia); BMBF, DFG, and HGF (Germany); GSRI (Greece); NKFIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); Lithuanian Academy of Sciences (LAS, Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLPFAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MES and NSC (Poland); FCT (Portugal); MESTD (Serbia); MCIN/AEI and PCTI (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); MHESI and NSTDA (Thailand); TUBITAK and TENMAK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have
received support from the Marie-Curie program and the European Research Council and Horizon 2020 Grant, contracts No. 675440, No. 724704, No. 752730, No. 758316, No. 765710, No. 824093, and COST Action No. CA16108 (European Union); the Leventis Foundation; the Alfred P. Sloan Foundation; the Alexander von Humboldt Foundation; the Science
Committee, project no. 22rl-037 (Armenia); the Belgian Federal Science Policy Office; the Fonds pour la Formation a la ` Recherche dans l’Industrie et dans l’Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door
Wetenschap en Technologie (IWT-Belgium); the F. R. S.-FNRS and FWO (Belgium) under the “Excellence of Science—EOS“—be.h project n.
30820817; the Beijing Municipal Science & Technology Commission, No. Z191100007219010 and Fundamental Research Funds for the Central Universities (China); the Ministry of Education, Youth and Sports (MEYS) of
the Czech Republic; the Shota Rustaveli National Science Foundation, Grant No. FR-22-985 (Georgia); the Deutsche Forschungsgemeinschaft (DFG), under Germany’s Excellence Strategy—EXC 2121 “Quantum Universe”—390833306, and under project no. 400140256—GRK2497; the Hellenic Foundation for Research and Innovation (HFRI), Project Number 2288
(Greece); the Hungarian Academy of Sciences, the New National Excellence Program—ÚNKP, the NKFIH research Grants No. K 124845, No. K 124850, No. K128713, No. K 128786, No. K 129058, No. K 131991, No. K 133046, No. K 138136, No. K 143460, No. K 143477, No. 2020-2.2.1-ED-2021-00181, and No. TKP2021-NKTA-64 (Hungary); the Council of Science and Industrial Research, India; ICSC—National Research Center for High Performance Computing, Big Data and Quantum Computing, funded by the NextGeneration EU program (Italy); the Latvian Council of Science; the Ministry of Education and Science, project no. 2022/WK/14, and the National Science Center, contracts Opus No. 2021/41/B/ST2/01369 and No. 2021/43/B/ST2/01552 (Poland); the Fundação para a Ciência e a Tecnologia, Grant No. CEECIND/01334/2018 (Portugal); the National Priorities Research Program by Qatar National Research Fund; MCIN/AEI/10.13039/501100011033, ERDF “a way of making Europe”, and the Programa Estatal de Fomento de la Investigación Científica y
T´ecnica de Excelencia María de Maeztu, grant No. MDM-2017-0765 and Programa Severo Ochoa del Principado de Asturias (Spain); the Chulalongkorn Academic into Its 2nd Century Project Advancement
Project, and the National Science, Research and Innovation Fund via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation, Grant No. B37G660013 (Thailand); the Kavli Foundation; the Nvidia Corporation; the SuperMicro Corporation; the Welch Foundation, contract No. C-1845; and the Weston Havens Foundation (USA).Publisher versio
Limitations of overvoltage mitigation methods in high PV penetration LV distribution networks
No full textThe surging integration of Photovoltaic (PV) systems in low-voltage networks promises increased self-consumption and reduced energy costs, but its rapid adoption introduces new challenges. The inherently stochastic nature of demand and PV generation can lead to scenarios in which excess PV energy is injected into the network, causing potentially critical overvoltage issues. This paper investigates the limitations of three prevalent overvoltage mitigation methods: inverter tripping, fixed feed-in power limitation, and droop-based active power curtailment. The efficacy of each method in maintaining voltage stability is investigated to expose underlying drawbacks such as curtailment of valuable renewable energy, operational complexities, unfairness, and potential network instability under specific scenarios
Enhancing script work and memorization for amateur actors using virtual reality
No full textThis study explores the potential of virtual reality (VR) technology as a tool to overcome specific physical limitations faced by amateur actors during rehearsals, such as restricted access to consistent rehearsal spaces, limited opportunities for spatial awareness development, and challenges in maintaining character continuity. Collaborating with the university's theater group, this research focuses on the script work and memorization process. The study was conducted over a two-month rehearsal period for a drama play, which involved observing actors' rehearsal processes during the first month and reviewing rehearsal diaries. The research identifies issues related to changes in stage directions, the process of memorization, and line retention. The study uses thematic analysis to evaluate actors' perspectives on VR-based script work methods. Key findings extracted from actor interviews and rehearsal diary provide insights into how VR can enhance script work and memorization. Additionally, the study outlines essential design elements for VR-supported text studies and explores potential tools for this purpose
Multi-hop airborne fso systems with relay selection over outdated log-normal turbulence channels
No full textDue to its high capacity and the ability to operate in an unregulated spectrum, free space optical (FSO) communication is ideally suited for airborne backhauling. In this paper, we consider a relay-assisted airborne FSO system in which serial and parallel relaying are deployed together. We deploy relay selection in each hop and select the relay that provides the maximum instantaneous signal-to-noise ratio (SNR). To achieve this in practice, it is necessary to estimate the channel coefficient per hop and feed it back to the preceding transmitting/relaying node. Due to the semi-fixed hovering position of rotary-wing unmanned aerial vehicles (UAVs), this estimate will likely be outdated for the airborne channel. Therefore, the relay will likely be selected based on the outdated channel coefficient. In this paper, we first propose a model for outdated log-normal fading. Based on the outdated channel state information, we discuss how to optimally set the node transmit power by a proper selection of the pre-amplification factor to ensure signal reception above a targeted threshold at each hop. We finally present the end-to-end bit error rate (BER) performance of the airborne parallel multi-hop system under consideration.TÜBİTA
Development of the CMS detector for the CERN LHC Run 3
No full textSince the initial data taking of the CERN LHC, the CMS experiment has undergone substantial upgrades and improvements. This paper discusses the CMS detector as it is configured for the third data-taking period of the CERN LHC, Run 3, which started in 2022. The entire silicon pixel tracking detector was replaced. A new powering system for the superconducting solenoid was installed. The electronics of the hadron calorimeter was upgraded. All the muon electronic systems were upgraded, and new muon detector stations were added, including a gas electron multiplier detector. The precision proton spectrometer was upgraded. The dedicated luminosity detectors and the beam loss monitor were refurbished. Substantial improvements to the trigger, data acquisition, software, and computing systems were also implemented, including a new hybrid CPU/GPU farm for the high-level trigger.The Armenian Science Committee, project no. 22rl-037; the Austrian Federal Ministry of Education, Science and Research and the Austrian Science Fund; the Belgian Fonds de la Recherche Scientifique, and Fonds voor Wetenschappelk Onderzoek; the Brazilian Funding Agencies (CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP); the Bulgarian Ministry of Education and Science, and the Bulgarian National Science Fund; CERN; the Chinese Academy of Sciences, Ministry of Science and Technology, the National Natural Science Foundation of China, and Fundamental Research Funds for the Central Universities; the Ministerio de Ciencia Tecnologia e Innovacion (MINCIENCIAS), Colombia; the Croatian Ministry of Science, Education and Sport, and the Croatian Science Foundation; the Research and Innovation Foundation, Cyprus; the Secretariat for Higher Education, Science, Technology and Innovation, Ecuador; the Ministry of Education and Research, Estonian Research Council via PRG780, PRG803 and PRG445 and European Regional Development Fund, Estonia; the Academy of Finland, Finnish Ministry of Education and Culture, and Helsinki Institute of Physics; the Institut National de Physique Nucleaire et de Physique des Particules/CNRS, and Commissariat a l'Energie Atomique et aux Energies Alternatives/CEA, France; the Bundesministerium fur Bildung und Forschung, the Deutsche Forschungsgemeinschaft (DFG), under Germany's Excellence Strategy EXC 2121 "Quantum Universe" -390833306, and under project number 400140256 -GRK2497, and Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany; the General Secretariat for Research and Innovation and the Hellenic Foundation for Research and Innovation (HFRI), Project Number 2288, Greece; the National Research, Development and Innovation Office (NKFIH), Hungary; the Department of Atomic Energy and the Department of Science and Technology, India; the Institute for Studies in Theoretical Physics and Mathematics, Iran; the Science Foundation, Ireland; the Istituto Nazionale di Fisica Nucleare, Italy; the Ministry of Science, ICT and Future Planning, and National Research Foundation (NRF), Republic of Korea; the Ministry of Education and Science of the Republic of Latvia; the Lithuanian Academy of Sciences; the Ministry of Education, and University of Malaya (Malaysia); the Ministry of Science of Montenegro; the Mexican Funding Agencies (BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI); the Ministry of Business, Innovation and Employment, New Zealand; the Pakistan Atomic Energy Commission; the Ministry of Education and Science and the National Science Center, Poland; the Fundacao para a Ciencia e a Tecnologia, grants CERN/FIS-PAR/0025/2019 and CERN/FISINS/0032/2019, Portugal; the Ministry of Education, Science and Technological Development of Serbia; MCIN/AEI/10.13039/501100011033, ERDF "a way of making Europe", Programa Estatal de Fomento de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu, grant MDM-2017-0765, projects PID2020-113705RB, PID2020-113304RB, PID2020-116262RB and PID2020-113341RB-I00, and Plan de Ciencia, Tecnologia e Innovacion de Asturias, Spain; the Ministry of Science, Technology and Research, Sri Lanka; the Swiss Funding Agencies (ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER); the Ministry of Science and Technology, Taipei; the Ministry of Higher Education, Science, Research and Innovation, and the National Science and Technology Development Agency of Thailand; the Scientific and Technical Research Council of Turkey, and Turkish Energy, Nuclear and Mineral Research Agency; the National Academy of Sciences of Ukraine; the Science and Technology Facilities Council, U.K.; the US Department of Energy, and the US National Science Foundation. Individuals have received support from the Marie-Curie program and the European Research Council and Horizon 2020 Grant, contract Nos. 675440, 724704, 752730, 758316, 765710, 824093, and COST Action CA16108 (European Union) the Leventis Foundation; the Alfred P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the F.R.S.-FNRS and FWO (Belgium) under the "Excellence of Science-EOS"-be.h project n. 30820817; the Be.ing Municipal Science & Technology Commission, No. Z191100007219010; the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Shota Rustaveli National Science Foundation, grant FR-22-985 (Georgia); the Hungarian Academy of Sciences, the New National Excellence Program -UNKP, the NKFIH research grantsK 124845, K 124850, K 128713, K128786, K 129058, K 131991, K 133046, K 138136, K 143460, K 143477, 2020-2.2.1-ED-2021-00181, and TKP2021NKTA-64 (Hungary); the Council of Scientific and Industrial Research, India; the Latvian Council of Science; the Ministry of Education and Science, project no. 2022/WK/14, and the National Science Center, contracts Opus 2021/41/B/ST2/01369 and 2021/43/B/ST2/01552 (Poland); the Fundacao para a Ciencia e a Tecnologia, grant FCT CEECIND/01334/2018; theNational Priorities Research Program by Qatar National Research Fund; the Programa Estatal de Fomento de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu, grant MDM-2017-0765 and projects PID2020-113705RB, PID2020-113304RB, PID2020-116262RB and PID2020-113341RB-I00, and Programa Severo Ochoa del Principado de Asturias (Spain); the Chulalongkorn Academic into Its 2nd Century Project Advancement Project, and the National Science, Research and Innovation Fund via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation, grant B05F650021 (Thailand); the Kavli Foundation; the Nvidia Corporation; the SuperMicro Corporation; the Welch Foundation, contract C-1845; and the Weston Havens Foundation (U.S.A.).Publisher versio
Kredi kartı işlemleri için üye işyeri hizmet ücreti optimizasyonu.
No full textThis thesis aims to enhance the current pricing policies set to optimize customer retention by proposing enhanced methodologies, focusing on finding efficient algorithms that apply to large-scale businesses. Customer retention studies have a vital effect on companies since they affect the generated revenue and market share. This study mainly investigates pricing factors and their relationship with customer churn. The aim is to find commission rates that will be used to charge merchants when making transactions with Point of Sale (POS) devices. An important aspect to remember is the price sensitivity of those merchants as there happens to be a negative relationship between their retention, and pricing policies. We designed a nonlinear mathematical model to solve this problem. However, solving nonlinear models for large-scale prob lems is not effective when computational power and current solving techniques are considered. As an approach to solving this phenomenon, we discretized the nonlin ear form of the model and proposed an alternative integer programming model. By doing so, solvers used to optimize the integer programming models were able to solve higher scales of the problem when compared with global nonlinear solvers. However, it is observed that IP solvers fail to solve the proposed mathematical model after a certain size. To solve this dimensionality problem, stratification techniques are used to divide the problem and optimize subparts of the whole problem separately while limitations and the objective of the problem are considered.Bu tez projesinde fiyatlandırma prosed¨ur¨u ¨uzerinde geli¸stirmeler yapılarak, m¨u¸steri tutundurma optimizasyonu ¨uzerinde ¸calı¸smalar yapılmı¸s ve geli¸stirilen algoritmaların b¨uy¨uk kitleler ¨uzerinde uygulanabilirli˘gi dikkate alınmı¸stır. M¨u¸steri tutundurma op timizasyonu, gelir ve market hacmi gibi metrikleri direkt etkiledi˘gi i¸cin firmalar i¸cin ciddi bir ¨oneme sahiptir. Bu ¸calı¸sma genel olarak fiyatlama ve bunun kayıp oranına etkisini inceleyip, en iyi fiyatlamanın nasıl yapılaca˘gını ara¸stırmaktadır. Ama¸c banka ile ¸calı¸san ¨uye i¸syerlerine, POS cihazlarını kullandıklarında ¨odemekle y¨uk¨uml¨u olduk ları komisyon oranlarını sa˘glamaktır. Bu i¸slem yapılırken, ¨uye i¸syerlerinin fiyat has sasiyeti de dikkate alınmalıdır ¸c¨unk¨u komisyon oranları kayıp oranlarını etkileye bilmektedir. Bu problemi ¸c¨ozebilmek i¸cin ¨once do˘grusal olmayan bir matematiksel model tasarlanmı¸stır. Do˘grusal olmayan modelleri ¸c¨ozmek i¸cin g¨un¨um¨uzde kullanılan ¸c¨oz¨um tekniklerinin y¨uksek hesaplama g¨uc¨u istemesinden kaynaklı, tasarlanan mod elin b¨uy¨uk kitleler ¨uzerinde uygulanamayaca˘gı g¨ozlemlenmi¸stir. Ol¸ceklendirme prob- ¨ lemini ¸c¨ozebilmek i¸cin tasarlanan model ayrıkla¸stırılmı¸s ve do˘grusal forma d¨on¨u¸st¨ur¨ul m¨u¸st¨ur. Do˘grusal modellerde kullanılan ¸c¨oz¨um algoritmaları, b¨uy¨uk kitleler ile ¸calı¸sma ya uygun olsa dahi, bu ¸calı¸smada kullanılan b¨uy¨ukl¨ukte bir kitle i¸cin yetersiz kalmı¸s ve bu problemin ¸c¨oz¨um¨u i¸cin katmanlı ¨ornekleme teknikleri kullanılmı¸stır
Investigation on microstructure, grain refinement, and mechanical properties of Cu/AZ31/Cu multilayered composite produced by cross-rolling methods
No full textThe positive effect of cross-rolling on the microstructure and mechanical properties of multilayered composites has received much attention in recent years. Therefore, in this paper, the Cu/AZ31/Cu multilayered composite has been fabricated by the cross-accumulative single-pass rolling method and the state-of-art process of cross-accumulative double-pass rolling. After each pass in these methods, the rolling direction was rotated anticlockwise. According to SEM images, all the layers were perfectly bonded without any obvious imperfections due to applying large strain and strain-path changes. Moreover, by increasing the cycles, the plastic instabilities increased in composites, although the ADPR method resulted in a more uniform reduction in AZ31 layer thickness and distribution of broken layers in the matrix. The line EDS analyses carried out on the interfaces of Cu/AZ31 did not show any interphases during the two methods. Furthermore, based on EBSD and TEM images, the grains were refined by both methods at higher cycles, although finer grains in Cu and AZ31 layers were obtained by the ADPR method. In addition, by increasing the cycles, the strength and hardness values of the composites increased. The composites processed by the ADPR process showed a tensile strength of 409 MPa and elongation of 17% which were higher than those achieved by the ASPR process. Similarly, the measured hardness of 213 HV (Cu) and 109 HV (AZ31) were achieved by the ADPR process, while lower values of the hardness of 209 HV (Cu) and 105 HV (AZ31) were achieved by the ASPR process
Call graph delta analysis and security vulnerability assessment with static analysis
No full textSeveral quality attributes like maintainability, reliability and security tend to degrade as software evolves. We aim at monitoring the impact of changes on software systems and identify potential vulnerabilities that are introduced by these changes. We apply static analysis on successive versions of source code to extract call graphs throughout its evolution. These graph models are analyzed and compared with each other to quantify the impact of software evolution and the risk for potential vulnerabilities. Graph edit distance metric is used for quantifying delta between graph models. The risk for security vulnerabilities is evaluated based on the dependencies of the source code on a set of functions that are known to be vulnerable, and distances of these functions to the entry points of the program in the call graph. We apply our approach on a set of open source projects. We show that versions with drastic changes and potential vulnerabilities can be highlighted.TÜBİTAK ; EUREKA cluster ITE
Türk romanında sindrella kompleksi: Erken cumhuriyet döneminde kadın romancıların katkısı üzerine
No full textBeing queer in turkish cinema: Existence, appearance, and representation
No full textQueer representations in cinema are both influenced by and reflective of local or global cultures. In the context of Turkish cinema, patriarchal Turkish culture often negatively impacts the portrayal of queer identities. These portrayals tend to reflect society’s view of queers rather than illustrating their actual place within society. This study examines the evolution of queer representation in Turkish cinema from its inception to the present, highlighting queer identities and representation issues through the lens of Judith Butler's queer theory.Publisher versio