Karamanoğlu Mehmetbey University
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Corrigendum to “host-sensitized phosphorescence of mn4+, pr3+,4+ and nd3+ in mgal2si2o8” [materials research bulletin, 47 (2012) 1138-1141, (s0025540812000633), (10.1016/j.materresbull.2012.02.009)]
No full textThe authors regret Fig. 3a and 3b were published incorrectly due to the copy to clipboard failed in the original version of the article. The corrected Fig. 3a and 3b are given in this correction. The authors would like to apologise for any inconvenience caused. © 2025 Elsevier Lt
Proton reconstruction with the totem roman pot detectors for high-β∗ lhc data
No full textThe TOTEM Roman pot detectors are used to reconstruct the transverse momentum of scattered protons and to estimate the transverse location of the primary interaction. This paper presents new methods of track reconstruction, measurements of strip-level detection efficiencies, cross-checks of the LHC beam optics, and detector alignment techniques, along with their application in the selection of signal collision events. The track reconstruction is performed by exploiting hit cluster information through a novel method using a common polygonal area in the intercept-slope plane. The technique is applied in the relative alignment of detector layers with μm precision. A tag-and-probe method is used to extract strip-level detection efficiencies. The alignment of the Roman pot system is performed through time-dependent adjustments, resulting in a position accuracy of 3 μm in the horizontal and 60 μm in the vertical directions. The goal is to provide an optimal reconstruction tool for central exclusive physics analyses based on the high-β∗ data-taking period at √s = 13 TeV in 2018. © 2025 CERN. Published by IOP Publishing Ltd on behalf of Sissa Medialab
Examining scholar-level publishing performance across bibliometric databases by cluster analysis
No full textPurposeThe purpose of this paper is to investigate the publishing characteristics of scholars across three popular bibliographic databases, namely, Google Scholar, Web of Science and Scopus, that allow the publication output and impact of scholars to be evaluated from a data-centric perspective.Design/methodology/approachA cluster analysis was conducted on the bibliometric and demographic data of 4,054 scholars, sampled from 23 academic division in seven Turkish universities. Among various clustering algorithms, this study applies Ward's hierarchical clustering method to group scholars based on the publication characteristics. Moreover, this paper conducted cross-analyses on their academic divisions and titles to provide a more comprehensive evaluation of their scholarly performance.FindingsThe cluster analysis resulted in four distinct groups of scholars having different publication and citation patterns across three major databases. The results indicate that for all clusters, there is a decline in scholars' publication performance as this paper move from the Google Scholar database to the Scopus and Web of Science databases. The study results indicate that highly productive and influential scholars are affiliated with Medicine, Natural Sciences and Engineering, while less productive scholars are affiliated with Humanities, Educational Sciences and Administrative, Political and Applied Sciences.Originality/valueThis study contributes to prior literature by exploring and profiling the individual scholar's publication performances in prominent bibliographic databases. It is also precious that the findings of this study offer useful information on scholarly publication characteristics in major databases and can be valuable for policymakers and scholars
A New Promising Silicate-Based Phosphor for Red Light and White Light Emitting Devices
Full text linkThe aim of this study is to investigate the structure, particle morphology, photoluminescence, and chemical composition of materials for application in light-emitting devices. The present work primarily focuses on the synthesis and characterization of Ba₃CdSi₂O₈:RE (RE: Ce³⁺, Eu³⁺, and Dy³⁺) phosphors via the solid-state reaction method. XRD and FT-IR techniques were used to characterize the phosphors. The XRD patterns of the phosphors reveal that the peaks match those of the Ba₃Cd(SiO₄)₂ host material (PDF Card number: 00-028-0128), with no impurity peaks observed. The photoluminescence (PL) emission spectra of Ba₃CdSi₂O₈:RE (RE: Ce³⁺, Eu³⁺, and Dy³⁺) phosphors were investigated in detail. Ba₃CdSi₂O₈:Dy³⁺ phosphors show four emission bands in the blue (450-510 nm), yellow (550-600 nm), red (640-700 nm), and deep red (740-770 nm) regions. Ce³⁺-doped Ba₃CdSi₂O₈ phosphors show a broad emission band from 575 nm to 700 nm, with a maximum around 594 nm, which is assigned to the 5d-4f transition of Ce³⁺ ions. Moreover, Ba₃CdSi₂O₈:Eu³⁺ phosphors capture excitation energy through charge transfer transitions of Eu³⁺ ions and emit at 586 nm, 613 nm, 653 nm, and 700 nm, corresponding to the 5D₀ → 7 F₀, 5D₀ → 7 F₂, 5D₀ → 7 F₃, and 5D₀ → 7 F₄ transitions of Eu³⁺ ions, respectively. The CIE color coordinates confirm that Eu³⁺ doping shifts the color toward red, while Dy³⁺ and Ce³⁺ doping result in shifts within other parts of the chromaticity space
Investigation on tribo-properties of twaron pulp-reinforced brake friction composites
No full textDetermining the appropriate formulation in designing and developing brake friction materials is one of the most complex tasks. This study investigates the synergistic effect and optimization of twaron fiber on the fade and recovery performance of brake friction composites. For this purpose, a series of friction materials containing varying amounts of twaron between 1 and 9 wt% were developed, and their characterization and tribo evaluation were carried out. The tribo performance of the composites was evaluated in a Krauss-type friction test machine in line with the ECE R90 procedure in terms of their fade and recovery behaviors. It was noted that the fade-recovery friction response of composites was affected when fiber is added; that is, an increase in fiber content improved the fade performance, friction fluctuations decreased, and a higher recovery response was observed. The fade and average coefficient of friction were found to be the main determinants, while recovery was found to be the stabilizer. Analytical hierarchy process (AHP) was used to determine the priority of importance of criteria in the performance evaluation, and VIKOR (multi-criteria optimization compromise solution) was used for ranking evaluation. The formulation with a concentration of twaron 7 wt% was found to have exhibited an optimal braking performance. The worn surfaces scanning electron microscope (SEM) study confirms the general friction and wear mechanisms of friction layers with fiber content. Highlights: Development of twaron pulp-reinforced eco-friendly brake friction composites. Use of MCDM approach in the development of BFCs for braking applications. VIKOR optimization positioned 7 wt% twaron-addition BFC as the optimal choice. It was observed that fiber amount is effective on the behaviors of composites. © 2024 Society of Plastics Engineers
Search for long-lived heavy neutral leptons in proton-proton collision events with a lepton-jet pair associated with a secondary vertex at s = 13 tev
No full textA search for long-lived heavy neutral leptons (HNLs) using proton-proton collision data corresponding to an integrated luminosity of 138 fb−1 collected at s = 13 TeV with the CMS detector at the CERN LHC is presented. Events are selected with a charged lepton originating from the primary vertex associated with the proton-proton interaction, as well as a second charged lepton and a hadronic jet associated with a secondary vertex that corresponds to the semileptonic decay of a long-lived HNL. No excess of events above the standard model expectation is observed. Exclusion limits at 95% confidence level are evaluated for HNLs that mix with electron and/or muon neutrinos. Limits are presented in the mass range of 1–16.5 GeV, with excluded square mixing parameter values reaching as low as 2 × 10−7. For masses above 11 GeV, the presented limits exceed all previous results in the semileptonic decay channel, and for some of the considered scenarios are the strongest to date. © The Author(s) 2025
The Effect Of Program Diversification Implementation İn Anadolu Imam Hatip High Schools On Religious Music Education
Full text link“Anadolu İmam Hatip Liselerinde Program Çeşitliliği Uygulamasının Dini Musiki Eğitimine Etkisi” başlıklı bu çalışma, imam hatip liselerinde uygulanan farklı program türlerinden birisi olan musiki programının, imam hatip liselerindeki musiki eğitimine yansımasını ve etkilerini konu edinmektedir. 2014 yılından itibaren uygulanan program çeşitliliği uygulaması, Anadolu İmam Hatip Liselerinde öğrenim gören öğrencilerin ilgi ve yönelimlerine göre okullara seçilmelerine ve bu okullarda yetenekleri doğrultusunda eğitim almalarına ve farklı alanlarda yetkinlik kazanmalarına olanak sağlamaktadır. Bu çeşitlilik, musiki eğitimi gibi sanatsal alanların da AİHL’lerde daha fazla önem kazanmasını sağlamıştır. Program çeşitliliğinin imam hatip liselerinde musiki eğitimine etkisi 2016 yılında Üsküdar Hakkı Demir Anadolu İmam Hatip Lisesi musiki projesi uygulaması ile başlamıştır. Bugün itibariyle 13 farklı ilde ve okulda musiki programı/projesi uygulanmaktadır. Bu makalede, sanat ve musiki eğitiminin imam hatip liselerinde yer alması önem ve gereklilik durumu açısından ele alınmıştır. “İmam hatip liselerinde musiki” konusu bağlamındaki ilgili çalışmalar kısaca değerlendirilmiştir. DÖGM tarafından yayınlanan ve musiki proje okullarında musiki eğitimi ve uygulamalarına ilişkin bilgilere yer veren vizyon belgeleri incelenerek değerlendirilmiş bu çerçevede program çeşitliliğinin AİHL musiki eğitimine etki ve katkıları ele alınarak, musiki eğitimi ve uygulamaları genel/özel amaçlar, öğrenci kabulü ve uygulama aşamaları şeklinde ele alınmış daha sonra tespit ve değerlendirmelere yer verilmiştir.“This study titled “The Effect of Program Diversification Implementation in Anadolu Imam Hatip High Schools on Religious Music Education” focuses on the reflections and impacts of the music program, one of the different types of programs implemented in Imam Hatip High Schools, on the music education in these schools. The program diversification practice, which has been in effect since 2014, allows students studying in Anadolu Imam Hatip High Schools to be selected for schools based on their interests and orientations, receive education according to their talents, and gain competencies in various fields. This diversity has led to a greater emphasis on artistic areas, such as music education, in Anadolu Imam Hatip High Schools. The impact of program diversification on music education in Imam Hatip High Schools began with the music project implementation at Üsküdar Hakkı Demir Anadolu Imam Hatip High School in 2016. As of today, music programs/projects are being implemented in 13 different provinces and schools. This article discusses the importance and necessity of the inclusion of art and music education in Imam Hatip High Schools. Relevant studies regarding the topic of “music in Imam Hatip High Schools” are briefly evaluated. The vision documents published by the Directorate General of Religious Education, which contain information regarding music education and practices in music project schools, are examined and evaluated. In this context, the effects and contributions of program diversification to the music education in AİHL are discussed, and music education and practices are addressed in terms of general/specific objectives, student admission, and implementation stages, followed by findings and evaluations.
The evaluation of the mediation role of life engagement in resilience and trauma levels of individuals experiencing the earthquake in Kahramanmaraş, Türkiye
Full text linkhe aim of this study is to evaluate the mediation role of life engagement in resilience and trauma levels of individuals experiencing the earthquake on February 6, 2023 in the city of Kahramanmaraş in Türkiye. The sample of this descriptive and correlational study included 1406 individuals. The questionnaire data was obtained through Google Forms and other data collection tools were Socio-demographic Information Form, Trauma Level Determination Scale, Short Resilience Scale and Life Engagement Scale. To analyse the data, frequency (percentage, arithmetic mean) and correlation analyses were used. Depending on the findings of the study, the resilience and trauma levels were negatively correlated, whereas the resilience and life engagement levels were positively correlated. Furthermore, the life engagement levels were negatively correlated with trauma levels while they were positively correlated with resilience. It was found that the life engagement played an mediation role in resilience and trauma levels of individuals experiencing the earthquake in Kahramanmaraş, Türkiye. In this study, we found that the life engagement has an important role in resilience and trauma levels of individuals. We are of the opinion that the findings of this study might help researchers and conductors to plan and perform effective strategies for post-impact phase of an earthquake
Study of WH production through vector boson scattering and extraction of the relative sign of the W and Z couplings to the Higgs boson in proton-proton collisions at √S=13 Te
Full text linkA search for the production of a W boson and a Higgs boson through vector boson scattering (VBS) is presented, using CMS data from proton-proton collisions at root s = 13 TeV collected from 2016 to 2018. The integrated luminosity of the data sample is 138 fb(-1). Selected events must be consistent with the presence of two jets originating from VBS, the leptonic decay of the W boson to an electron or muon, possibly also through an intermediate tau lepton, and a Higgs boson decaying into a pair of b quarks, reconstructed as either a single merged jet or two resolved jets. A measurement of the process as predicted by the standard model (SM) is performed alongside a study of beyond-the-SM (BSM) scenarios. The SM analysis sets an observed (expected) 95% confidence level upper limit of 14.3 (9.9) on the ratio of the measured VBS WH cross section to that expected by the SM. The BSM analysis, conducted within the so-called kappa framework, excludes all scenarios with lambda(WZ) < 0 that are consistent with current measurements, where lambda(WZ) = kappa(W)/kappa(Z) and kappa W and kappa(Z) are the HWW and HZZ coupling modfiers, respectively. The significance of the exclusion is beyond 5 standard deviations, and it is consistent with the SM expectation of lambda(WZ) = 1
Examining e-government use in Turkey with logistic regression and chaid analysis
Full text linkBu çalışmanın amacı, Türkiye'de bireylerin e-devlet üzerinden kişisel bilgilere erişimde kullanımlarını etkileyen faktörleri lojistik regresyon analizi ve CHAID (Chi-squared Automatic Interaction Detection) algoritması kullanarak incelemek ve elde edilen sonuçları ayrıntılı olarak yorumlamaktır. Bu amaçla 2022 yılında gerçekleştirilmiş olan Hanehalkı Bilişim Teknolojileri Kullanım Araştırması mikro veri seti ele alınmıştır. Çalışmada e-devlet kullanımına ilişkin; resmi makamlar veya kamu hizmetleri tarafından hakkımda saklanan bilgilere eriştim (e- Devlet Kapısı (turkiye.gov.tr), e- Nabız, Hayat Eve Sığar vb. üzerinden emeklilik, sağlık, dava, tapu, bordro, trafik cezası vb. hakkında) bağımlı değişken olarak ele alınmıştır. Bağımsız değişkenler olarak ise; yaş, cinsiyet, eğitim, bölge ve mesleğin yanı sıra veri setinde son 3 ay içinde internet iletişim araçları kullanım sıklığına ilişkin en yüksek frekansa sahip olan, mesajlaşma (WhatsApp, Messenger, Skype, BİP, Viber, Snapchat vb.), bağımsız değişken olarak çalışmaya dahil edilmiştir. Çalışmada elde edilen bulgular değerlendirildiğinde, bireylerin e-devleti kişisel bilgilere erişim için kullanımı ile genel olarak incelenen bağımsız değişkenlerin anlamlı bir ilişkiye sahip olduğu belirlenmiştir.The aim of this study is to examine the factors affecting the use of individuals in accessing personal information via e-government in Turkey by using logistic regression analysis and CHAID (Chi-squared Automatic Interaction Detection) algorithm and to create an e-government user profile with the results obtained. For this purpose, the micro data set of the Household Information Technologies Usage Survey, conducted in 2022, is considered. Regarding the use of e-government in the study; access to information stored about me by official authorities or public services (about retirement, health, lawsuit, land registry, payroll, traffic penalty, etc. via E-Government (turkiye.gov.tr), e- Nabız, Hayat Eve Sığar vb.) is considered as the dependent variable. As independent variables; in addition to age, gender, education, region and profession, messaging (WhatsApp, Messenger, Skype, BIP, Viber, Snapchat, etc.), which has the highest frequency of internet communication tools usage in the last 3 months in the data set, was included in the study as an independent variable. When the findings obtained in the study are evaluated, it is determined that individuals' use of e-government to access personal information and the independent variables examined in general had a significant relationship