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Application of Gegenbauer Polynomials with Two Variables to Bi-univalency of Generalized Discrete Probability Distribution Via Zero-Truncated Poisson Distribution Series
Get PDFThe present study is unique in exploring bi-univalent functions, which has recently garnered attention from many researchers in Geometric Function Theory (GFT). The uniqueness lies in utilizing a generalized discrete probability distribution and a zero-truncated Poisson distribution combined with generalized Gegenbauer polynomials featuring two variables. We aim to obtain coefficient bounds, the classical Fekete-Szego inequality, and Hankel and Toeplitz determinants to generalize the probability of a gambler's ruin. Additionally, using the defined bi-univalent function classes contributes to the uniqueness of the obtained results
Daily social media use time, mindful self care, and coping with stress as the predictors of secondary traumatic stress of adult social media users
Get PDFBu araştırmanın amacı sosyal medya kullanıcılarında ikincil travma düzeylerini çalışmaktır. Yetişkin sosyal medya kullanıcılarında ikincil travmatik stres üzerinde günlük ortalama sosyal medya kullanım saati, stresli durumlarla başa çıkma düzeyi, bilinçli farkındalıklı öz bakım düzeyi yordayıcı etkisi olup olmadığı araştırılmak istenmiştir. Araştırmanın örneklemi sosyal medya kullanıcısı, son dört jenerasyondan 179 erkek ve 226 kadın olmak üzere toplam 405 yetişkin bireyi kapsamaktadır. Katılımcılara 10 soruluk Demografik Bilgi Formu, Stresli Durumlarla Başa Çıkma Envanteri Kısa Form (SDBÇE-21), Bilinçli Farkındalıklı Öz Bakım Ölçeği (BFÖBÖ), Sosyal Medya Kullanıcıları İçin İkincil Travmatik Stres Ölçeği (SM-İTSÖ) uygulanmıştır. Elde edilen veriler SPSS 28 programıyla analiz edilmiş olup, veri analizinde Çoklu Regresyon analizi, bağımsız örneklem T testi ve tek yönlü ANOVA analizlerinden faydalanılmıştır. Araştırma sonucunda stresli durumlarla başa çıkma, bilinçli farkındalıklı öz bakım ve sosyal medyada günlük ortalama geçirilen sürenin; sosyal medya kullanıcılarında ikincil travmatik stresi düşük düzeyde yordadığı ortaya çıkmıştır. Sosyal medya kullanıcılarında ikincil travmatik stres düzeyi; cinsiyet, psikososyal destek alma durumu, gelir durumu, sosyal medyayı kullanım nedeni, en sık kullanılan sosyal medya platformu gibi değişkenlerden etkilenmektedir. Bu bulgular ışığında Türkiye'de ve dünyada ikincil travmatik stresi önleme ve ikincil travmatik strese uğrayan bireylerin ve toplumun sağaltımı, yeni politikaların düzenlenmesi kayda değer bir katkı sunabilir.This research aims to study the levels of secondary trauma in social media users due to such traumatic events. It was aimed to investigate whether average daily social media usage hours, level of coping with stressful situations, and mindful self-care skills have a predictive effect on secondary traumatic stress in adult social media users. The sample consisted of 405 adult social media users from the last four generations (Baby Boomers, X, Y, and Z), 179 males and 226 females. The participants were administered the 10-question Demographic Information Form, Coping Inventory for Stressful Situations Short Form (CISS-21), Mindful Self-Care Scale (MSCS), and Secondary Traumatic Stress Scale for Social Media Users (STSS-SM). As a result of the study, coping with stressful situations, mindful self-care, and average daily time spent on social media were found to be low predictors of secondary traumatic stress in social media users. The level of secondary traumatic stress in social media users is affected by variables such as gender, psychosocial support status, income status, reason for using social media, and the most frequently used social media platform. In light of these findings, the prevention of secondary traumatic stress in social media users in Turkey and the world, the treatment of individuals and society suffering from secondary traumatic stress, and the organization of new policies can make a significant contrubition
Investigating Türkiye’s financial nexus: A wavelet coherence analysis of sovereign CDS spreads, bond yields, stock index, and FX rates
Get PDFThis article investigates the intricate relationships between sovereign credit default swaps (CDS) and various Turkish financial assets, including the US Dollar to Turkish Lira exchange rate (USDTRY), the Borsa Istanbul 100 (XU100) stock index, and government bond yields. Employing a rigorous wavelet coherence analysis that captures the timefrequency domain, this study utilizes daily data from November 2008 to July 2022 period containing important financial, economic and global health crises, such as Great Recession, European Debt Crises, and COVID-19 pandemic. The wavelet coherence results uncover that the causality between variables is contingent on both the frequency domain and evolves dynamically over time, with the most significant interdependencies manifesting in the medium term. Moreover, the analysis reveals that government bond yields, and their respective volatilities positively impact CDS spread and its volatility. Similarly, the USDTRY rate leads to positive changes in the CDS spread. By contrast, the volatility of CDS spreads positively influences foreign exchange volatility and the XU100 index volatility. The CDS spread negatively affects the XU100 index. Overall, the findings elucidate the direction of causality between Turkish CDS spread and retained Turkish financial assets and then provide valuable information on the predictive power of those securities for investors, financial risk managers, and policymakers. © 2024 by the authors
Fake News Detection with Machine Learning Algorithms
Get PDFNowadays, with the advancement of technology, the use of news sources has also undergone a great evolution. News sources have constantly evolved from past to present, ranging from magazines to radios, from newspapers to televisions. The fact that it has become so easy to access news has caused society to pay more attention to fake news. Fake news has the ability to influence society through news sources such as social media, which can reach wider audiences with the development of technology. The difficulties of users in accessing accurate and reliable sources in this information flow that shapes their daily lives increases the potential for the spread of fake news, and it becomes increasingly difficult to distinguish between real and fake news. In this study, classification models for fake news detection were designed using machine learning algorithms. The dataset, which includes fake and real news examples, contains 42,000 examples. Each class, including fake and real samples, contains 22,000 sample data. In order to increase data quality, accuracy and usability, preprocessing methods were applied to the data set. The removal of numbers, stop words, and html tags was done in the pre-processing step to remove unnecessary information from the text. Models were created for fake news detection with singular and ensemble classification algorithms. Performance evaluation of the models was performed using 5-fold cross-validation. In the performance comparisons of the models, values such as accuracy, sensitivity, specificity, tp rate and fp rate were calculated. The highest performance results were observed in the random forest classification algorithm with an accuracy rate of 76%
Organisational Democracy Studies in Türkiye: A Review of Postgraduate Theses
No full textThis study aims to examine the postgraduate theses on organisational democracy by content analysis. Forty-one theses from 1993-2023 in the National Thesis Centre of the Council of Higher Education (YOK) were analysed. Most studies in master's theses were conducted in 2022 and in doctoral theses in 2019-2020. It was determined that the most frequently studied variables in master's theses were organisational democracy, democracy, organisation, organisational commitment; in doctoral theses, organisational democracy, democracy, organisational opposition, perception of organisational democracy. It was found that 89,66% of master's theses were quantitative, and 6,90% were mixed method; 75% of doctoral theses were quantitative, and 25% were mixed method. It is understood that Geçkil and Tikici's (2013) Organisational Democracy and Meyer-Allen's (1993) Organisational CommitmentScales were used to measure organisational democracy in master's theses prepared with quantitative method. In doctoral theses, Geçkil and Tikici's (2013) Organisational Democracy, Basım and Şeşen's (2006) Organisational Citizenship Behaviour, and Kassing's (2000) Organisational Opposition Scale were used. Master's theses on organisational democracy (n= 15) were prepared in the public sector, and doctoral theses (n= 6) were prepared as mixed. While 34,48% of the master's theses were prepared in the Departments of Educational Sciences and Business Administration, 58,33% of the doctoral theses were prepared in the Department of Business Administration. The study is expected to provide new perspectives to researchers by revealing the developments in the field of organisational democracy in Turkey
SİYASİ GÜCÜN GÖRSEL GÖSTERGESİ: TÜRK SİYASİ PARTİ LİDERLERİNİN INSTAGRAM PROFİL FOTOĞRAFLARININ DERİNLEMESİNE İNCELEMESİ
Get PDFContemporary uses of new communication technologies and social networking platforms not only encourage people's screen-scrolling habits to utilise their leisure time, but also serve the dissemination of perceptual content. Recent research has shown that the visual symbols that the public encounters when evaluating politicians can play a critical role in the consistency or change in their preferences. Therefore, the daily use of social media by political actors through attention-grabbing images or videos is considered as a new form of propaganda. In line with this approach, which constitutes the main purpose of this study, how profile photos on Instagram, the fastest growing social media application in 2022, are used by political actors is analysed. Analysing the codes contained in visual materials, which are accepted as an important communication tool by politicians, constitutes the general structure of the study. The tendency of Instagram users to communicate through visuals instead of text emphasises the importance of the data to be presented on this platform. Out of the 122 political parties actively operating in Turkey, five political parties that won the right to representation in the Turkish Grand National Assembly by passing the 10% election threshold were taken as a sample. Instagram profile photos of the leaders of these parties were analysed semiotically. As a result of the analyses, it has been revealed that the visual sign forms of two opposite political parties that advocate nationalism of different ethnic identities are largely similar and that each leader makes a visual presentation of the ideological identities of their parties with the photos they share from their personal accounts.Yeni iletişim teknolojileri ve sosyal ağ platformlarının çağdaş kullanım alanları, yalnızca insanların boş vakitlerini değerlendirmeleri için ekran kaydırma alışkanlıklarını teşvik etmekle kalmamakta, aynı zamanda algısal içeriklerin yayılmasına da hizmet etmektedir. Son dönemde yapılan araştırmalar, halkın siyasetçileri değerlendirirken karşılaştıkları görsel sembollerin, tercihlerindeki tutarlılık veya değişim üzerinde kritik bir rol oynayabileceğini ortaya koymuştur. Bu nedenle, siyasi aktörlerin her gün dikkat çekici görseller veya videolar aracılığıyla sosyal medyayı kullanmaları, yeni bir propaganda biçimi olarak değerlendirilmektedir. Bu çalışmanın temel amacını oluşturan bu yaklaşım doğrultusunda, 2022 yılında en hızlı büyüme gösteren sosyal medya uygulaması olan Instagram'daki profil fotoğraflarının siyasi aktörler tarafından nasıl kullanıldığı incelenmiştir. Siyasiler tarafından önemli bir iletişim aracı olarak kabul edilen görsel materyallerin içerdiği kodların çözümlenmesi, çalışmanın genel yapısını oluşturmaktadır. Instagram kullanıcılarının metin yerine görseller aracılığıyla iletişim kurma eğilimi, bu platformda sunulacak verilerin önemini vurgulamaktadır. Türkiye'de aktif olarak faaliyet gösteren 122 siyasi parti içerisinden, %10'luk seçim barajını aşarak TBMM'de temsil hakkı kazanan beş siyasi parti örneklem olarak alınmıştır. Bu partilerin liderlerinin Instagram profil fotoğrafları, göstergebilimsel olarak analiz edilmiştir. Yapılan analizler sonucunda, farklı etnik kimliklerin milliyetçiliğini savunan iki zıt siyasi partinin görsel gösterge biçimlerinin büyük ölçüde benzerlik taşıdığı ve her bir liderin kişisel hesaplarından paylaştıkları fotoğraflarla, partilerinin ideolojik kimliklerinin görsel sunumunu yaptıkları ortaya konulmuştur
The mediating role of xenophobia in the relationship between desired social distance towards refugees and social anxiety
No full textÇalışmanın temel amacı mültecilere yönelik arzulanan sosyal mesafe ile sosyal kaygı ilişkisinde zenofobinin aracı rolünü araştırmaktır. Bu çerçevede, bağımsız değişken mültecilere yönelik sosyal mesafe, bağımlı değişken sosyal kaygı olarak dahil edilmiş ve aracı değişken olarak zenofobi test edilmiştir. Araştırma 2023-2024 yılları arasında Türkiye içinde yaşayan 18-65 yaş arası Türk vatandaşlığına sahip yetişkinlerden Google Forms aracılığı ile toplanmıştır. Cevaplanan 458 anket değerlendirmeye alınmıştır Bu araştırmada, SPSS 27 yazılımı kullanılarak tüm istatistiksel analizler gerçekleştirildi. Aracı rol analizi için Process Macro 4.2 programı kullanılmıştır. Ölçekler arasındaki ilişkiyi belirlemek için Pearson Korelasyon analizi, demografik değişkenlere göre farklılıkları anlamak için Bağımsız Gruplar T-testi ve ANOVA testleri kullanılmıştır. Aracı rol analizi için Process Macro 4.2 programı kullanılmıştır. Araştırma sonucunda mültecilere yönelik arzulanan sosyal mesafe; sosyal kaygı ve zenofobi üzerinde negatif yönlü etkisi olduğu ortaya çıkmıştır. Sosyal Kaygı ve zenofobi arasında ise pozitif yönlü ilişki bulunmuştur. Mültecilere yönelik arzulanan sosyal mesafe ve sosyal kaygı ilişkisinde zenofobinin aracı bir rolü olduğu sonucuna ulaşılmıştır.The main aim of the study was to investigate the mediating role of xenophobia in the relationship between desired social distance towards refugees and social anxiety. In this context, the independent variable was desired social distance towards refugees, the dependent variable was social anxiety, and xenophobia was tested as the mediating variable. The research was conducted among Turkish citizens aged between 18-65 living in Turkey between 2023-2024, and data were collected using Google Forms. A total of 458 completed surveys were included in the analysis. All statistical analyses were performed using SPSS 27 software. Process Macro 4.2 program was utilized for the mediation analysis. Pearson correlation analysis was employed to determine the relationships between the scales, while Independent Samples T-test and ANOVA tests were used to understand differences based on demographic variables. Process Macro 4.2 program was used for the mediation analysis. The results of the study revealed that desired social distance towards refugees had a negative effect on both social anxiety and xenophobia. A positive relationship was found between social anxiety and xenophobia. It was concluded that xenophobia played a mediating role in the relationship between desired social distance towards refugees and social anxiety
A comparative study on J.R.R. tolkien's the hobbit and Peter Jackson's the hobbit trilogy
Get PDFJohn Ronald Reuel Tolkien's fantasy novel for children, The Hobbit, has always been regarded as a canonical work of art by the literary critics. The journey through Middle-earth has flourished with this novel and paved the way for his other canonical trilogy, The Lord of Rings. The novel has also been adapted for the cinema by the director, Peter Jackson with a series of three fantasy films. Whereas Tolkien has actually written the novel for children, Jackson has filmed the trilogy for the adults. Right along with this different aim on the target audience between Tolkien and Jackson, there are also numerous differences and changes between the novel and the film series. Thus, the purpose of this study is to compare J.R.R. Tolkien's novel, The Hobbit, orThere and Back Again (1937) with Peter Jackson's film series, The Hobbit: An Unexpected Journey (2012), The Hobbit: The Desolation of Smaug (2013) and The Hobbit: The Battle of the Five Armies (2014) in terms of the journey, the fellowship and the space based on Linda Hutcheon's adaptation theory. © 2024, IGI Global. All rights reserved
Effects of post-polymerization conditions on color properties, surface roughness, and flexural strength of 3D-printed permanent resin material after thermal aging
Get PDFPurpose: To evaluate the color, surface properties, and flexural strength of 3D-printed permanent crown resin subjected to different post-polymerization conditions after artificial aging.Materials and methods: Ninety (10 x 2 mm) disc-shaped specimens were printed by using permanent crown resin with SLA technology. Specimens were divided into nine different groups, subject to post-polymerization conditions at three different times (15, 20, and 30 min) and three different temperatures (40, 60, and 80 degrees C) (n = 10). Color and surface roughness measurements were repeated pre-post thermal aging (5.000 cycles, 5-55 degrees C) and a flexural strength test was carried out. Data were analyzed with Shapiro-Wilk, Kruskal-Wallis, ANOVA, Tukey HSD, and Dunn tests (alpha < 0.05).Results: Delta E-00 values showed results below the acceptable color threshold, except for the 30 min 40 degrees C group (Delta E-00 <1.8). No difference was found between the relative translucency parameter and surface roughness values of the 20 min 60 degrees C group recommended by the manufacturer and the other groups. A significant difference was found between the flexural strength values of the groups (p < 0.001).Conclusions: The color properties, surface topography, and mechanical properties of the printed permanent crown material were affected by different post-polymerization conditions: polymerized at different times and temperatures. Although the flexural strength and color change values showed promising results, more studies are required to evaluate its suitability for clinical use
The Effect of Sales and Customer Orientation on Salespeople's Work Performance and the Role of Spiritual Intelligence
Get PDFSpiritual intelligence has been considered an important concept in studies in recent years. Spiritual intelligence, which is one of the mental capacities contributing to the cognitive and emotional competencies of individuals and providing them with values such as self-knowledge and mastery in mental states, also plays an important role in the work performance of salespeople. In this study, which reveals the role of spiritual intelligence in brands' sales and/or customer orientation depending on their understanding and goals, it is seen that spiritual intelligence does not assume a regulatory role but an important mediating role