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Observation of the Γγ→ττ Process in Pb+pb Collisions and Constraints on the Τ-Lepton Anomalous Magnetic Moment With the Atlas Detector
No full textThis Letter reports the observation of τ-lepton-pair production in ultraperipheral lead-lead collisions Pb+Pb→Pb(γγ→ττ)Pb and constraints on the τ-lepton anomalous magnetic moment a_{τ}. The dataset corresponds to an integrated luminosity of 1.44 nb^{-1} of LHC Pb+Pb collisions at sqrt[s_{NN}]=5.02 TeV recorded by the ATLAS experiment in 2018. Selected events contain one muon from a τ-lepton decay, an electron or charged-particle track(s) from the other τ-lepton decay, little additional central-detector activity, and no forward neutrons. The γγ→ττ process is observed in Pb+Pb collisions with a significance exceeding 5 standard deviations and a signal strength of μ_{ττ}=1.03_{-0.05}^{+0.06} assuming the standard model value for a_{τ}. To measure a_{τ}, a template fit to the muon transverse-momentum distribution from τ-lepton candidates is performed, using a dimuon (γγ→μμ) control sample to constrain systematic uncertainties. The observed 95% confidence-level interval for a_{τ} is -0.057a_{τ}0.024
An Integrated Pipeline for Building Performance Analysis: Daylighting, Energy, Natural Ventilation, and Airborne Contaminant Dispersion
No full textEarly design decisions influence the performance of a building significantly. Yet, computational support for performance assessment during early design is very limited. This research proposes an analysis pipeline for the accurate and comprehensive assessment of building performance by integrating simulation-based analysis tools that perform daylighting, computational fluid dynamics, energy, and contaminant transport simulations, as well as wind tunnel testing that performs velocity and pressure measurements to generate wind pressure coefficients. The pipeline is implemented in three different ways: hybrid, model-based, and empirical workflows. The hybrid workflow combines computational fluid dynamics simulations and wind tunnel testing, while the model-based and empirical workflows utilize computational fluid dynamics simulations and wind tunnel testing, respectively. In the pipeline, computational fluid dynamics is used early on to evaluate a high number of alternatives, leading to the selection of a limited number of good-performing options. Following this, wind tunnel testing is used to “correct” the initial wind pressure coefficient results for increased accuracy. Therefore, a hybrid approach operating with high accuracy that can effectively explore the design search space is needed. The pipeline is tested on a hypothetical office building with different shading device configurations. The coupling of computational and physical testing methods in a hybrid workflow significantly enhanced the accuracy of airflow-related data, which is underestimated by 15.4% using the model-based workflow. Moreover, the hybrid workflow managed the complexity of the design search space by the assessment and elimination of different design alternatives by the stepwise simulation workflow. The inclusion of shading devices also improved the accuracy of airflow-related data. If the shading devices had not been modeled for the simulations and had not been tested, the results would have overestimated the ventilation rate by 85% and underestimated the ventilation rate by 1.4%, respectively. The study's contribution is significant as it proposes a pipeline for a more accurate and comprehensive assessment of building performance, which can inform design decisions and improve the overall building's performance. © 2023 The AuthorsThe authors would like to thank METU RÜZGEM for making wind tunnel facilities available for this research. The authors would like to thank Dr. Oğuz Uzol, Dr. Nilay Uzol and the METU RÜZGEM team for their support throughout this research
Measurement of the Total and Differential Higgs Boson Production Cross-Sections at ?s = 13 Tev With the Atlas Detector by Combining the H ? Zz * ? 4? and H ? ?? Decay Channels
No full textThe total and differential Higgs boson production cross-sections are measured through a combined statistical analysis of the H ? ZZ * ? 4? and H ? ?? decay channels. The results are based on a dataset of 139 fb?1 of proton–proton collisions at a centre-of-mass energy of 13 TeV, recorded by the ATLAS detector at the Large Hadron Collider. The measured total Higgs boson production cross-section is 55.5?3.8+4.0 pb, consistent with the Standard Model prediction of 55.6 ± 2.5 pb. All results from the two decay channels are compatible with each other, and their combination agrees with the Standard Model predictions. A combined statistical interpretation of the measured fiducial cross-sections as a function of the Higgs boson transverse momentum is performed in order to probe the Yukawa couplings to the bottom and charm quarks. A similar interpretation is performed by including also the constraints from the measurements of Higgs boson production in association with a W or Z boson in the H ? bb¯ and cc¯ decay channels. [Figure not available: see fulltext.] © 2023, The Author(s).IN2P3-CNRS; 2014-2021; SCI/013; National Science Foundation, NSF; U.S. Department of Energy, USDOE; Alexander von Humboldt-Stiftung, AvH; CRC Health Group, CRC: 21/SCI/017; Canarie; H2020 Marie Sk?odowska-Curie Actions, MSCA; Multiple Sclerosis Scientific Research Foundation, MSSRF; CERN; Compute Canada; 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; Royal Society; European Research Council, ERC; European Cooperation in Science and Technology, COST; Australian Research Council, ARC; 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; National Research Foundation of Korea, NRF; 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; Ministerio de Ciencia e Innovación, MICINN; Centre National pour la Recherche Scientifique et Technique, CNRST; Staatssekretariat für Bildung, Forschung und Innovation, SBFI; Horizon 2020; 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; Agencia Nacional de Investigación y Desarrollo, ANIDWe 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, Türkiye; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, CANARIE, Compute Canada and CRC, 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
Enacting Individual Ambidexterity in Design Entrepreneurship
No full textDesign demands achieving a balance between creative and routine activities. This balance is vital to ensure the survival and prosperity of design entrepreneurs' businesses. This paper examines how design entrepreneurs enact individual ambidexterity to carry out both creative (exploration) and routine (exploitation) activities in their own businesses. Empirically, it draws on interviews with 23 designers who founded micro businesses, where they carry out design, production, marketing, and sales activities. Our findings show that individual ambidexterity was smoothly enacted to handle design and production tasks in an intertwined fashion, thus reaching a compromise between exploration and exploitation, while it was hindered by the contradiction between 'the sales mindset' and 'the creative mindset' designers encountered when faced with marketing activities. On the other hand, 'the business mindset', which primarily belongs to the non-creatives' world, was considered as valuable and essential for a creative professional choosing an entrepreneurial career path
Observation of Single-Top Production in Association With a Photon Using the Atlas Detector
No full textThis Letter reports the observation of single top quarks produced together with a photon, which directly probes the electroweak coupling of the top quark. The analysis uses 139 fb^{-1} of 13 TeV proton-proton collision data collected with the ATLAS detector at the Large Hadron Collider. Requiring a photon with transverse momentum larger than 20 GeV and within the detector acceptance, the fiducial cross section is measured to be 688±23(stat) _{-71}^{+75}(syst) fb, to be compared with the standard model prediction of 515_{-42}^{+36} fb at next-to-leading order in QCD
Drivers of Popularity of Online Information: Content, Context and Psychological Processes
No full textThis paper aims to study how people utilize (search for, choose, process, and evaluate) information provided on online domains, emphasizing the balance between context identifiers and the actual content of information and the psychological processes. The study assesses the popularity of online provided materials, TED Talks, in relation to the length of information, user ratings, and several content-related features. The paper employs a comprehensive naturalistic data set that covers the titles, duration, viewer-assigned ratings/tags, transcripts, various content identifiers, and popularity (number of views) of 2685 TED Talks. The results reveal the relevance of both content and context-related factors, as well as psychological processes, on the popularity of the talks. On the context side, using certain words in the title and the text, optimizing the talk pace and the length of the talk; on the content side, carefully incorporating rhetorical features are major factors that influence the popularity of the talks. On the psychological processes front, the popularity of talks is associated with positive emotions and anxiety among affective processes, and insight and tentativeness among cognitive processes
Homogenized Properties Of Periodic Lattice Materials
No full text7th International Congress on 3D Printing (Additive Manufacturing) Technologies and Digital Industry 2023 October 25 to 27, 2023 - ISTANBUL, TURKIYEThe use of lattice structure is remarkable in many industries due to its lightweight but stiff property. The complex topology of these structures can be fabricated by additive manufacturing. While using Lattice materials, it is important to choose the most efficient lattice material according to the structural situation. Structural analysis processes must be completed to understand the structural properties of lattice materials. In this paper, structural properties of many types of lattice materials are compared by taking into account their effective mechanical properties and anisotropy ratios. However, structural analysis of lattice materials is difficult in terms of computational cost and mathematical modeling because they are very complex structures. Instead of modeling complex structures, numerical homogenization method is used. The homogenization method is a method based on making an approximation of the mechanical properties of lattice materials with a solid material by modeling with representative volume elements. In this paper, periodic lattice materials with cubic symmetry are represented by numerical homogenization method and the obtained Young’s modulus, shear modulus and Zener ratios are compared and interpreted to select the lattice type which gives best performance and lowest anisotropy
İçi Boş Çubuk Elemanlarla Modellenen Girintili Kafes Yapıların Geometrik Parametrelerinin Enerji Emilimine Etkisinin İncelenmesi
No full textKafes yapılar günümüzde biyomedikal, havacılık, otomotiv gibi pek çok alanda kullanılmaktadır. Biyomedikal sektöründe daha yüksek enerji emilimi sağlayıp yüksek dayanım sağlayan implantların üretiminde, havacılık sektöründe daha hafif ve daha dayanıklı yapıların üretiminde, otomotiv sektöründe çarpışma sırasında enerji emme kapasitesinin artırılması ve yolcu güvenliğinin sağlanmasında ve tekstil sektöründe ise kişiselleştirilebilir üretimlerin yapılmasında sıkça kullanılmaktadır. Girintili kafes yapılar iç içe geçebilen yapıları sayesinde diğer türlere göre sağlayabildiği yüksek enerji emilimi ile ilgi odağı haline gelmiştir. Bu çalışmada içi boş çubuk elemanlarla modellenen girintili kafes yapıların geometrik parametrelerinin enerji emilimine etkisi incelenmiştir. Enerji emilimine etkisi olan geometrik parametreler arasında hücre boyutları, içi boş çubuk yapıların kalınlıkları, çubuklar arasındaki girinti açısı yer almaktadır. Çalışmada hücre boyutları sabit tutularak çubukların kalınlıklarının ve aralarındaki açının enerji emilimine etkisi incelenmiştir. Enerji emiliminin önemli olduğu uygulamalarda girintili kafes yapıların kullanımı önemli bir rol oynamaktadır. Enerji emilimini artırmak üzere yapılan analizler sonucunda çubuklar arası açı azaltıldığında ve kalınlık belirli bir noktaya kadar arttırıldığında enerji emiliminin kayda değer bir şekilde arttığı gözlemlenmiştir
Increasing Primary School Students' Awareness of Cultural Heritage through Visual Interface Design
No full textCultural heritage is the building block of a society, a set of tangible or intangible values that have come from the past to the present and should be transferred to future generations. Today, however, it has become important that these values, which face some negative impacts, are protected and sustained, in other words, that they are sustainable. The most basic and best way to ensure sustainability is to instill awareness of cultural heritage from an early age through education. Accordingly, in this study, first, the objectives and achievements of the 1st, 2nd and 3rd grades that may be related to cultural heritage in the Primary School Life Science Lesson and Visual Arts Lesson curricula were examined. A visual interface was designed with the idea that realizing these acquisitions, which have content related to cultural heritage, supported by visuals in a digital learning environment will contribute to the retention of information. In this visual interface design, there are games such as puzzles, artifact stories, reading aloud, finding a similar artifact, etc. to teach historical ruins and artifacts that fall within the scope of cultural heritage. With this design proposal prepared for the achievements of the courses, it is aimed to increase the interest of primary school students aged 9-10 in Turkey's cultural heritage, to raise their awareness, to educate them through gamification and to contribute to their mental development in this way. In this study, qualitative research method and case study design were used, and within this framework, the purposive sampling group consisted of classroom and visual arts teachers and a visual communication designer. The opinions of the teachers and field experts were consulted about the contributions that the visual interface design prepared by the researchers could make to the realization of the relevant outcomes and its functionality and aesthetic aspects.Kültürel miras, bir toplumun yapıtaşı, geçmişten günümüze gelen ve gelecek nesillere aktarılması gereken somut ya da somut olmayan değerler bütünüdür. Fakat günümüzde bazı olumsuzlarla karşı karşıya olan bu değerlerin korunması ve varlığını devam ettiriyor olması diğer bir anlatımla sürdürülebilir olması önemli hale gelmiştir. Sürdürülebilirliği sağlamanın en temel ve en iyi yolu ise küçük yaşlardan itibaren kültürel miras bilincini eğitim yolu ile aşılamaktır. Bu amaç doğrultusunda bu çalışmada, öncelikli olarak İlkokul Hayat Bilgisi ve Görsel Sanatlar Dersi öğretim programlarında kültürel miras ile ilgili olabilecek 1, 2 ve 3. sınıflar amaç ve kazanımlar incelenmiştir. Kültürel mirasla ilgili içeriği olan bu kazanımların dijital öğrenme ortamında görsellerle destekli olarak gerçekleştirilmesinin bilgilerin kalıcılığına katkı yapacağı düşüncesiyle bir görsel arayüz tasarlanmıştır. Bu görsel arayüz tasarımında kültürle miras kapsamına giren tarihi kalıntılar ve eserleri öğretmeye yönelik olarak yapboz, eser hikâyeleri, sesli okuma, benzerini bulma, görüntüyü tamamlama vb. oyunlar yer almaktadır. Derslerin kazanımlarına yönelik hazırlanan bu tasarım önerisi ile 9-10 yaş grubu ilkokul öğrencilerinin Türkiye kültürel mirasına ilgilerini artırmak, onları bilinçlendirmek, oyunlaştırma yoluyla eğitmek ve bu yolla zihinsel gelişimlerine katkıda bulunmak amaçlanmıştır. Bu çalışmada nitel araştırma yöntemi ve durum çalışması deseni kullanılmış, bu çerçevede amaçlı örneklem grubu sınıf ve görsel sanatlar öğretmenleri ile görsel iletişim tasarımcısından oluşturulmuştur. Araştırmacılar tarafından hazırlanan görsel arayüz tasarımının ilgili kazanımların gerçekleştirilmesine yapabileceği katkılar ile işlevselliği ve estetik yönü hakkında çalışma grubunu oluşturan öğretmenlerin ve alan uzmanlarının görüşlerine başvurulmuştur
Applying the Who Icf Framework To Long Covid Patients With Persistent Respiratory Symptoms
No full textObjectives: The aim of this study was to evaluate long COVID patients with persistent respiratory symptoms through the application of the World Health Organization (WHO) International Classification of Functioning, Disability and Health (ICF) framework.Patients and methods: This national, prospective, multicenter, cross-sectional study was conducted with 213 patients (118 females, 95 males; median age 56 years; range, 20 to 85 years) with long COVID between February 2022 and November 2022. The ICF data were primarily collected through patient interviews and from the acute medical management records, physical examination findings, rehabilitation outcomes, and laboratory test results. Each parameter was linked to the Component Body Functions (CBF), the Component Body Structures (CBS), the Component Activities and Participation (CAP), the Component Environmental Factors (CEF), and Personal Factors according to the ICF linking rules. Analysis was made of the frequency of the problems encountered at each level of ICF category and by what percentage of the patient sample.Results: In the ICF, 21 categories for CBF, 1 category for CBS, and 18 categories of CAP were reported as a significant problem in a Turkish population of long COVID patients with persistent respiratory symptoms. Furthermore, eight categories for CEF were described as a facilitator, and four as a barrier.Conclusion: These results can be of guidance and provide insight into the identification of health and health-related conditions of long COVID patients with persistent respiratory symptoms beyond the pathophysiological aspects, organ involvement, and damage of COVID-19. The ICF can be used in patients with long COVID to describe the types and magnitude of impairments, restrictions, special needs, and complications