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Pairs trading with wavelet transform
No full textWe show that applying the wavelet transform to S & P 500 constituents' prices generates a substantial increase in the returns of the pairs-trading strategy. Pairs trading strategy is based on finding prices that move together, but if there is shared noise in the asset prices, the co-movement, on which one base the trades, might be caused by this common noise. We show that wavelet transform filters away the noise, leading to more profitable trades. The most notable change occurs in the parameter estimation stage, which forms the weights of the assets in the pairs portfolio. Without filtering, the parameters estimated in the training period lose relevance in the trading period. However, when prices are filtered from common noise, the parameters maintain relevance much longer and result in more profitable trades. Particularly, we show that more precise parameter estimation is reflected on a more stationary and conservative spread, meaning more mean reversion in opened pairs trades. We also show that wavelet filtering the prices reduces the downside risk of the trades considerably
Repetitive negative thinking during ambiguous situations: Interactive roles of looming cognitive style and intolerance of uncertainty
No full textBackground and objectives: Looming cognitive style (LCS) and intolerance of uncertainty (IUC) are both cognitive risk factors that play an important role in development of anxiety disorders. Even though both are known to be triggered by ambiguous situations, there is inadequate research on how they predict anxiety and repetitive negative thinking (RNT) patterns in response to ambiguity. The current study aimed to examine the interactive association of IUC and LCS with state anxiety and intensity of RNT following exposure to a stressor that involves ambiguity.Methods: Data were collected from 292 (153 women) individuals aged between 18 and 63 (M = 20.82, SD = 5.20) who were administered self-report measures of LCS, IUC, and anxiety followed by a vignette describing an ambiguous situation. State RNT and anxiety were assessed following exposure to the vignette.Results: The results indicated that IUC moderated the association of physical looming with state RNT. Individuals who have elevated levels of both physical looming and IUC reported experiencing more higher frequency of RNT when compared with other individuals. Limitations: Although the manipulation check has shown that the scenario is effective it was not pilot tested. Also, since the manipulation was conducted online, the manipulation may not have been presented in a standardized way to all the participants. Conclusions: Overall, the study shows that the two risk factors enhance each other's effect and lead to more intense levels of repetitive, uncontrollable, and distressing thoughts following exposure to ambiguity
Arama Koruma Tedbiri: Özel Hayatın Gizliliğine Yönelik Eski ve Yeni Müdahale Yöntemleri
No full textDevletin özel hayatın gizliliğine ilişkin en temel müdahalelerinden birisi olan kişinin üstünün, eşyasının, evinin aranması, Anayasanın 20. ve 21. maddesi uyarınca ancak belirli şartlarda gerçekleştirilebilir. Özel hayatın gizliliğine müdahale eden bu tedbir, günümüzde pek çok sorunu barındırdığından yeniden ele alınması gerekir. Çalışmamızda üç ana grup problem tespit ederek, bunlardan çeşitli örnekler sunacak ve böylece bu tedbirin neden yeniden düşünülmesi gerektiğini ortaya koymaya çalışacağız. Bu problemler sırasıyla yasal düzenlemelerin birbiri ile uyumsuzluğu, ceza yargılamasında yüksek mahkeme kararlarının yasal düzenlemeler ile uyumsuzluğu ve nihayet teknolojik gelişmeler nedeniyle mevcut düzenlemelere nelerin eklenebileceği şeklindedir. Bu bakımdan hem mevzuatı ve tarihsel gelişimini hem yargı kararlarını hem de başka ülkelerden örnek uygulamaları değerlendirerek çözüm önerilerimizi paylaşacağız
Measurement of muon pairs produced via ?? scattering in nonultraperipheral Pb + Pb collisions at ?sNN = 5.02 TeV with the ATLAS detector
No full textResults of a measurement of dimuon photoproduction in nonultraperipheral Pb + Pb collisions at ?sNN = 5.02 TeV are presented. Themeasurement uses ATLAS data from the 2015 and 2018 Pb + Pb data-taking periods at the LHC with an integrated luminosity of 1.94 nb.1. The ?? ? ?+ ?- pairs are identified via selections on pair momentum asymmetry and acoplanarity. Differential cross sections for dimuon production are measured in different centrality, average muon momentum, and pair rapidity intervals as functions of acoplanarity and k?, the transverse momentum kick of one muon relative to the other. Measurements are also made as a function of the rapidity separation of the muons and the angle of the muon pair relative to the second-order event plane to test whether magnetic fields generated in the quark-gluon plasma affect the measured muons. A prior observation of a centrality-dependent broadening of the acoplanarity distribution is confirmed. Furthermore, the improved precision of the measurement reveals a depletion in the number of pairs having small acoplanarity or k? values in more central collisions. The acoplanarity distributions in a given centrality interval are observed to vary with the mean pT of the muons in the pair, but the k? distributions do not. Comparisons with recent theoretical predictions are made. The predicted trends associated with effects of magnetic fields on the dimuons are not observed. © 2023 CERN, for the ATLAS Collaboration.IN2P3-CNRS; CC-IN2P3; 2014-2021; SCI/013; U.S. Department of Energy, USDOE; Alexander von Humboldt-Stiftung, AvH; Alabama Space Grant Consortium, ASGC; Brookhaven National Laboratory, BNL; Karlsruhe Institute of Technology, KIT; H2020 Marie Sk?odowska-Curie Actions, MSCA; Multiple Sclerosis Scientific Research Foundation, MSSRF; CERN; Göran Gustafssons Stiftelser; Natural Sciences and Engineering Research Council of Canada, NSERC; National Research Council Canada, NRC; Canada Foundation for Innovation, CFI; Science and Technology Facilities Council, STFC; Leverhulme Trust; European Research Council, ERC; European Cooperation in Science and Technology, COST; Australian Research Council, ARC; National Stroke Foundation, NSF; Neurosurgical Research Foundation, NRF; Helmholtz-Gemeinschaft, HGF; Minerva Foundation; Deutsche Forschungsgemeinschaft, DFG; Agence Nationale de la Recherche, ANR; Japan Society for the Promotion of Science, KAKEN; Ministry of Education, Culture, Sports, Science and Technology, MEXT; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, SNF; Danmarks Grundforskningsfond, DNRF; Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP; National Natural Science Foundation of China, NSFC; Ministerstvo Školství, Mláde?e a T?lov?chovy, MŠMT; Fundação para a Ciência e a Tecnologia, FCT; Bundesministerium für Bildung und Forschung, BMBF; Chinese Academy of Sciences, CAS; Austrian Science Fund, FWF; Generalitat de Catalunya; Ministry of Science and Technology of the People's Republic of China, MOST; Agencia Nacional de Promoción Científica y Tecnológica, ANPCyT; Nederlandse Organisatie voor Wetenschappelijk Onderzoek, NWO; Bundesministerium für Wissenschaft, Forschung und Wirtschaft, BMWFW; Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq; Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science; Israel Science Foundation, ISF; Instituto Nazionale di Fisica Nucleare, INFN; Narodowe Centrum Nauki, NCN; Javna Agencija za Raziskovalno Dejavnost RS, ARRS; Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja, MPNTR; Centre National de la Recherche Scientifique, CNRS; Ministerio de Ciencia e Innovación, MICINN; Centre National pour la Recherche Scientifique et Technique, CNRST; Staatssekretariat für Bildung, Forschung und Innovation, SBFI; British Columbia Knowledge Development Fund, BCKDF; European Regional Development Fund, ERDF; Defence Science Institute, DSI; Narodowa Agencja Wymiany Akademickiej, NAWA; Institutul de Fizic? Atomic?, IFA; Clean Combustion Research Center, King Abdullah University of Science and Technology, CCRC, KAUST: 21/SCI/017; Clean Combustion Research Center, King Abdullah University of Science and Technology, CCRC, KAUST; Agencia Nacional de Investigación y Desarrollo, ANID; Royal Society of South Australia, RSSA; Irish Rugby Football Union, IRFUWe thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; CNPq and FAPESP, Brazil; NSERC, NRC, and CFI, Canada; CERN; ANID, Chile; CAS, MOST, and NSFC, China; Minciencias, Colombia; MEYS CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS and CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF, and MPG, Germany; GSRI, Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MEiN, Poland; FCT, Portugal; MNE/IFA, Romania; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DSI/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF, and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TENMAK, Turkey; STFC, United Kingdom; DOE and NSF, USA In addition, individual groups and members have received support from BCKDF, Canarie, Compute Canada, and CCRC, Canada; PRIMUS 21/SCI/017 and UNCE SCI/013, Czech Republic; COST, ERC, ERDF, Horizon 2020, and Marie Sk?odowska-Curie Actions, European Union; Investissements d'Avenir Labex, Investissements d'Avenir Idex, and ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales, and Aristeia programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and MINERVA, Israel; Norwegian Financial Mechanism 2014-2021, Norway; NCN and NAWA, Poland; La Caixa Banking Foundation, CERCA Programme Generalitat de Catalunya, and PROMETEO and GenT Programmes Generalitat Valenciana, Spain; Göran Gustafssons Stiftelse, Sweden; The Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK), and BNL (USA), the Tier-2 facilities worldwide, and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. .We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; Yer- PhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; CNPq and FAPESP, Brazil; NSERC, NRC, and CFI, Canada; CERN; ANID, Chile; CAS, MOST, and NSFC, China; Minciencias, Colombia; MEYS CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3- CNRS and CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF, and MPG, Germany; GSRI, Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MEiN, Poland; FCT, Portugal; MNE/IFA, Romania; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZ , Slovenia; DSI/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF, and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TENMAK, Turkey; STFC, United Kingdom; DOE and NSF, USA In addition, individual groups and members have received support from BCKDF, Canarie, Compute Canada, and CCRC, Canada; PRIMUS 21/SCI/017 and UNCE SCI/013, Czech Republic; COST, ERC, ERDF, Horizon 2020, and Marie Sk?odowska-Curie Actions, European Union; Investissements d'Avenir Labex, Investissements d'Avenir Idex, and ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales, and Aristeia programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSFNSF and MINERVA, Israel; Norwegian Financial Mechanism 2014-2021, Norway; NCN and NAWA, Poland; La Caixa Banking Foundation, CERCA Programme Generalitat de Catalunya, and PROMETEO and GenT Programmes Generalitat Valenciana, Spain; Göran Gustafssons Stiftelse, Sweden; The Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK), and BNL (USA), the Tier-2 facilities worldwide, and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. [61]
Fashion Marketing with Virtual Humans as Influencers
No full textThe rise of the metaverse is increasing the technological ventures in virtual humans and encouraging influencer marketers to use virtual influencers (VIs). Although VI marketing is a recent phenomenon, its volume is estimated to reach $16.4 billion in 2022 (Santora 2022). Complex 3D human modelling is becoming easier and less expensive due to the development of user-friendly programs and cloud-based applications. As a result, the number of VIs is increasing almost daily. Virtual humans’ human-likeness is also becoming flawless because of the use of artificial intelligence (AI). VIs are employed in fashion typically to endorse a product, enhance brand recognition, and create potential marketing opportunities for fashion companies. In this chapter, Vis, particularly those that are human-like, were examined in detail to better understand their effects on fashion marketing. Our literature review revealed three focal themes: creation and technology behind virtual humans, social interaction between VIs and real people, and VIs’ product endorsement, brand advertising, and followers’ response to it. © 2023 selection and editorial matter, Abu Sadat Muhammad Sayem; individual chapters, the contributors
Reliability and validity of the Turkish version of the 39-item Parkinson Disease Questionnaire
No full textBackground and purpose - This study aims to investigate the validity and reliability of the Turkish Version of the 39-item Parkinson Disease Questionnaire. Methods - A total of 100 patients with Parkinson's disease who were admitted to the outpatient neurology clinic in Koc University and Istanbul University were enrolled. 39-item Parkinson Disease Questionnaire, Parkinson Disease Quality of Life Questionnaire, Unified Parkinson's Disease Rating Scale, Hoehn-Yahr Scale, and Short Form Health Survey-36 were administered to all participants. 39-item Parkinson Disease Questionnaire was repeated 2 weeks later. Results - The internal consistency coefficient of the 39-item Parkinson Disease Questionnaire was 0.957. Test-retest correlation ranged between r = 0.693-0.979. Reliability of Turkish version of the 39-item Parkinson Disease Questionnaire was found to be very high with the exclusion of one item (30(th) item). The scale was found to be consistent over time and correlated positively with Hoehn-Yahr Scale, and negatively with Unified Parkinson's Disease Rating Scale, Parkinson Disease Quality of Life Questionnaire, and Short Form Health Survey-36. Conclusion - Turkish version of the 39-item Parkinson Disease Questionnaire, with the exclusion of the 30th item can be used reliably in assessing the quality of life of Parkinson's patients
Ethnicity-Related Partner Selection Experiences Among Young Adults from Christian Armenian Families: A Qualitative Study in Turkey
No full textIn this qualitative study partner selection experiences of young Armenian adults were examined using Ecological Systems Theory and Filter Theory as a theoretical basis. The literature review of partner selection was reviewed in three subtitles as theoretical foundations of partner selection, partner selection studies in Turkey, and intermarriage and intramarriage in Armenians. The study was conducted with 10 participants and data analysis was undertaken through thematic analysis using MAXQDA. This approach emerged nine themes and eight subthemes across four levels. Individuals' Filters and Preferences about Partner Selection Level themes were as follows: 1. Choosing an Armenian partner is a priority, 2. Importance of the Partner's Ethnic Identity is Highlighted for Long-Term Relationships, 3. Implementing other selection filters than ethnic identity, 4. Advising Armenian Partner to Children without Rigid Restrictions. Impact of Immediate Social Environment level emerged as Theme 5: Community disapproves and judges out-group marriages, 6. Friends tend to select Armenian partners w/out isolating others, and 7. Families implement and contain partner restriction, Social Connection Level theme revealed: 8. Strength of ties to Armenian Culture/Community promote deeper interiorizing of ingroup partner selection, Attitudes and Ideologies of the Culture Level emerged as 9. Concerns about sustaining culture/population promote in group partner selection. Themes and Subthemes were elaborated upon and discussed in the results and discussion sections providing comprehensive insight into the partner selection experiences of young Armenian Adults. Thematic analysis of the interviews exhibited the interaction of the larger social systems during the partner selection process of Armenian young adults. Thus, this study introduced an extended framework illuminating partner selection experiences among ethnic minorities in the Turkish contex
The MEREC-AROMAN method for determining sustainable competitiveness levels: A case study for Turkey.
Get PDFABSTRACT: Sustainable competitiveness represents a multifaceted phenomenon encompassing economic, environmental, and social dimensions. Macro-level competitiveness strategies are formulated based on the diverse capitals possessed by individual countries, thereby giving rise to variations in the sustainable competitiveness strategies of each country. This research introduces a novel hybrid method called the method based on the removal effects of criteria (MEREC)? alternative ranking order method accounting for two-step normalization (AROMAN) for determining sustainable competitiveness levels. This study aims to assess Turkey’s sustainable competitiveness position vis-` a-vis its border neighbors. Natural capital, resource efficiency and intensity, social capital, intellectual capital and innovation, economic sustainability, and governance efficiency are the Global Sustainable Competitiveness Index (GSCI) indicators. The GSCI indicators are employed as criteria for determining the sustainable competitiveness scores of countries. The findings show that the “resource efficiency and intensity” criterion has the highest level of significance. The sustainable competitiveness level of Turkey to its neighboring countries is elucidated based on the results. Recommendations are formulated for the development of strategies aimed at determining Turkey’s position in the race for sustainable competitiveness. The introduced MERECAROMAN can be utilized to provide rules of thumb for other countries to improve their sustainable competitiveness. This research offers decision support for the formulation of countries’ sustainable competitiveness strategies and policies, fostering awareness in the planning and establishment of regional collaborations among nations
Search for a light charged Higgs boson in t ? H±b decays, with H± ? cb, in the lepton plus jets final state in proton-proton collisions at ?s=13 TeV with the ATLAS detector
Get PDFA search for a charged Higgs boson, H-+/-, produced in top-quark decays, t -> H(+/-)b, is presented. The search targets H-+/- decays into a bottom and a charm quark, H-+/- -> cb. The analysis focuses on a selection enriched in top-quark pair production, where one top quark decays into a leptonically decaying W boson and a bottom quark, and the other top quark decays into a charged Higgs boson and a bottom quark. This topology leads to a lepton-plus-jets final state, characterised by an isolated electron or muon and at least four jets. The search exploits the high multiplicity of jets containing b-hadrons, and deploys a neural network classifier that uses the kinematic differences between the signal and the background. The search uses a dataset of proton-proton collisions collected at a centre-of-mass energy root s = 13TeV between 2015 and 2018 with the ATLAS detector at CERN's Large Hadron Collider, amounting to an integrated luminosity of 139 fb(-1). Observed (expected) 95% confidence-level upper limits between 0.15% (0.09%) and 0.42% (0.25%) are derived for the product of branching fractions B( t -> H-+/- b) x B( H +/- -> cb) for charged Higgs boson masses between 60 and 160 GeV, assuming the SM production of the top-quark pairs
Search for the charged-lepton-flavor-violating decay Z ? e? in pp collisions at ?s=13 TeV with the ATLAS detector
Get PDFA search for the charged-lepton-flavor-violating process Z -> e mu is presented, using 139 fb(-1) of root s = 13 TeV pp collision data collected by the ATLAS experiment at the LHC. An excess in the e mu invariant mass spectrum near the Z boson mass would be a striking signature of new physics. No excess is observed, and an upper limit B(Z -> e mu) < 2.62 x 10(-7) is placed on the branching fraction at 95% confidence level, which is the most stringent limit to date