WoS İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://acikerisim2.beykoz.edu.tr/handle/20.500.12879/2

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The Role of Voluntary Organizations in Building Trust
(TUBA-Turkish Academy of Sciences, 2023) Yanikkaya, Halit; Saglam, Guler
Voluntary organizations are crucial in promoting generalized social trust in a society. The aim of this study is thus to investigate the relationship between the generalized social trust and membership in voluntary organizations. We employ the World Values Survey data for 48 countries including Turkiye on trust and organizational membership for the years 2017-2020 (Wave 7). In addition to the overall organizational membership, this study also investigates the nexus between trust and membership in large numbers of voluntary organizations such as "sport or recreational organization, political party, art, music or educational organization, professional association, humanitarian or charitable organization, religious organization, consumer organization, selfhelp group, mutual aid group". Our logistic regression estimates show that all of these membership variables are significantly related with the trust variable for the full sample. Thus, our results provide substantial evidence for the argument that membership in voluntary organizations is an important factor in building trust in a society. Our further estimations also imply that the positive association between organizational membership and trust holds regardless of the being active or inactive member. However, unlike the full sample, our results for Turkiye show that while overall organizational membership fails to raise trust, memberships to some voluntary organizations such as labor union, political party and aid organizations have even negative association with trust in Turkiye.
Sustainable Development and Green Sukuk: The Case of Turkiye
(TUBA-Turkish Academy of Sciences, 2023) Yesilyaprak, Mehmet
In this study, it has been tried to emphasize the increase in events such as global warming, environmental pollution, Covid-19 pandemic in recent years and the impact of all these important environmental effects on the sustainability of life. At the beginning of the study, a literature search is conducted. In the following, the concepts of sustainability and sustainable development are explained. In the fourth chapter, sustainable and climate change finance, sustainable development finance, climate finance, green finance and green finance applications in the world and in Turkiye are explained. In the fifth chapter, green sukuk is explained in detail. In the sixth chapter, examples of green sukuk in the world and in Turkiye are given. In the seventh chapter, what has been done about green sukuk in Turkiye, its problems, solution suggestions and the future of green sukuk are given.
Gender Equality and Femvertising Practices in Advertisements
(Mehmet Akif Ersoy University, 2025) Yaman, Duygu; Songur, Ahmet
Female figures, frequently featured as the central element in product and service advertisements, are pivotal in shaping marketing messages. In the broader context of gender representation, the roles attributed to women, both traditional and modern, have undergone significant transformations in contemporary society. Feminism, as a key factor influencing modern role distribution, has led to the emergence of feminist marketing, which is often referred to in the literature as femvertising. Using a content analysis methodology, this study examines commercials, awarded across various categories by the EFFIE organisation in 2022. The goal is to explore whether the feminist marketing in these advertisements is driven by commercial interests or is aimed at empowering the female figure from a societal perspective. A comparative analysis was conducted between the commercials of the same brands on March 8th, International Women's Day. The content analysis revealed that, while the awarded commercials predominantly emphasise traditional gender roles, the commercials for International Women's Day focus more on modern role distribution. Additionally, while femvertising appears less frequently in the International Women's Day commercials, it is more prevalent in the other award-winning ads. To broaden the scope of the research, semi-structured interviews were conducted with brands operating in Istanbul, which had received awards in the Mediacat 2022 Best Advertising Agencies category and were also included in the content analysis sample. The interviews were handled within the framework of a descriptive phenomenological approach. Semi-structured interviews were analysed through the MAXQDA program. They noted that the reason for the increase in femvertising application was that the brand's purpose was to create sympathy in the consumer and to make commercial profit. They stated that femvertising applications were advertising tactics. Another result of the study is that the concept of femvertising is perceived conceptually differently by advertisers and advertising agencies.
Solution to the Single Parametric Linear Programming Problems via Simplex-Based Algorithms: Handling the Uncertainties in Costs, Left or Right-Hand Sides
(Croatian Operational Research Society, 2026) Ergenecosar, Gizem Temelcan; Kocken, Hale Gonce; Albayrak, Inci; Sivri, Mustafa
Parametric programming is one of the notable approaches to expressing the uncertainties encountered in real life. Many studies express the parameters of the objective function and right-hand side parametrically, but only a few include the parametric coefficient matrix of the constraints. This paper examines the feasibility and optimality conditions of the simplex table and proposes a simplex-based algorithm (dual-simplex, generalized-simplex, or primal-simplex). In the solution process, each case is considered independently through the mathematical analysis of simplex multipliers. Distinct numerical examples illustrate each case to demonstrate the algorithm's implementation.
Resting-State EEG Power and Machine-Learning Classification in Adult Males with Gambling Disorder
(Frontiers Media SA, 2026) Cinaroglu, Metin; Yilmazer, Eda; Ulker, Selami Varol; Tarlaci, Sultan
Background: Gambling disorder (GD) is a behavioral addiction sharing neurobiological features with substance use disorders, yet objective biomarkers remain limited. This study examined resting-state EEG power and applied machine learning to identify potential electrophysiological markers of GD. Methods: Resting eyes-closed Electroencephalography (EEG) was recorded from 47 individuals with GD and 32 healthy controls. Absolute and relative power across delta (1-4 Hz), theta (4-8 Hz), alpha (8-13 Hz), and beta (13-30 Hz) bands were quantified over eight cortical regions. Group differences and correlations with the South Oaks Gambling Screen (SOGS) were analyzed. Multiple comparisons were controlled using the Benjamini-Hochberg False Discovery Rate (FDR) correction. A Linear Discriminant Analysis (LDA) classifier was trained to differentiate GD from controls based on EEG features. Results: Group differences in EEG power were subtle, with GD showing significantly higher delta power in the left temporal region (p = 0.032, d = 0.43). Within the GD group, greater gambling severity was associated with higher absolute beta power across frontal, parietal, temporal, and occipital regions (r approximate to 0.40-0.50, p < 0.01), and these associations remained significant after FDR correction (pFDR < 0.05). The LDA model using absolute power achieved 73.7% classification accuracy (AUC = 0.74), whereas relative power yielded near-chance accuracy (57.9%). Conclusions: GD is characterized by subtle but meaningful EEG alterations, particularly increased beta activity linked to gambling severity. Multivariate EEG patterns can distinguish GD from controls, supporting the potential of resting-state EEG as a biomarker for clinical assessment and severity monitoring in behavioral addiction.
The Mediating Role of Mental Well-Being in the Effect of Local Food Experience on Destination Loyalty
(Varna University Management-VUM, 2026) Karahan, Selda; Karacabey, Selda Uca
This study explores the mediating role of mental well-being in the relationship between local food experience and destination loyalty. A mixed-methods design was employed, combining a quantitative survey of 420 domestic tourists in T & uuml;rkiye with in-depth interviews of seven participants. The quantitative findings, analysed through PLSSEM, indicate that local food experiences significantly influence both mental well-being and destination loyalty, and that mental well-being partially mediates this relationship. Qualitative data, analysed through interpretative routine, authenticity, and social benefit. These findings suggest that beyond sensory pleasure, meaningful social interactions and a sense of belonging contribute to well-being and encourage repeat visits. This research offers theoretical insights by integrating eudaimonic and hedonic perspectives of well-being into tourism behaviour, and practical implications for destination managers aiming to strengthen loyalty through culinary experiences.
Employee Benefits Supporting Well-Being at the Intersection of Meaning and Cost: A Sustainability Perspective from Generation Z
(MDPI, 2026) Ilhan, Umit Deniz; Ozkilinc, Damla Nurcan
This study examines how employee benefit practices link employee well-being with financial sustainability in sustainable organization management. Focusing on Generation Z, it investigates the intersection between meaning attributed to employee benefits and managerial decision-making guided by financial rationality. Drawing on human resources management (HRM) and finance perspectives, employee benefits are conceptualized as mechanisms for balancing human-centered value creation and economic resilience. A qualitative design was used, based on semi-structured interviews with 15 Generation Z employees and 20 human resources (HR) and finance managers in T & uuml;rkiye. Data were analyzed through thematic analysis and the Gioia methodology to develop an inductive, multi-level framework. The findings indicate that Generation Z employees view employee benefits as psychosocial resources reflecting justice, autonomy, psychological safety, and value alignment-core components of subjective and eudaimonic well-being-while managers assess them primarily through financial sustainability logics such as cost control and return on investment. Overall, meaning- and cost-oriented perspectives emerge as mutually reinforcing within sustainable organizational systems. The study proposes the Meaning-Cost Balance (MCB) Framework, conceptualizing employee benefits as a strategic management mechanism aligning employee well-being with financial resilience. Positioned at the intersection of HRM and financial sustainability, the framework contributes to sustainable organization management and offers a transferable basis for future comparative research.
Predictive Value of Renal Parenchyma and Pelvic Urine Density on Preoperative Non-Contrast CT in Systemic Inflammatory Response Syndrome (SIRS) After Semi-Rigid Ureteroscopy (Vol 54, 15, 2025)
(Springer, 2026) Ozsoy, Emrah; Kutluhan, Musab Ali; Tokuc, Emre; Kayar, Ridvan; Demir, Samet; Meric, Kaan; Ozturk, Metin Ishak
Validation of the Turkish Yale-Brown Obsessive-Compulsive Scale and Self-Report Version: Psychometric Evidence from Clinical and Non-Clinical Populations
(Taylor & Francis Ltd, 2026) Cinaroglu, Metin; Yilmazer, Eda; Ulker, Selami Varol; Unubol, Huseyin; Sayar, Gokben Hizli
Background Obsessive - compulsive disorder (OCD) is a chronic condition that disrupts functioning and quality of life. The Yale - Brown Obsessive - Compulsive Scale (Y-BOCS; clinician-administered) and its Self-Report version (Y-BOCS-SR) are recognised gold standards for assessing OCD severity. Previous Turkish adaptations have been partial, limited by small samples or by validating only one format. This study provides the first comprehensive Turkish validation of both instruments.MethodsThe sample comprised 950 adults: 158 with DSM-5-TR - diagnosed OCD and 792 non-clinical adults. Translation followed a multi-phase process involving clinicians and a linguistics expert. Participants completed the Turkish Y-BOCS, Y-BOCS-SR, and additional OCD measures (OCI-R, VOCI, PI-R).ResultsThe clinician-administered Turkish Y-BOCS demonstrated excellent reliability (alpha = 0.91; ICC = 0.88) and strong psychometric validity, including a stable two-factor structure distinguishing obsessions and compulsions. The self-report version showed comparably high internal consistency (alpha = 0.90) and strong convergence with the clinician-administered scale. Convergent and criterion validity were robust, with high sensitivity and specificity. Cross-cultural comparisons further supported consistency and generalisability.ConclusionsThis study establishes both the clinician-administered and self-report Turkish Y-BOCS as reliable, valid, and culturally sensitive tools for assessing OCD severity in clinical and research contexts.
An Integrated TFN-Marcos Model for Multi-Criteria Evaluation of Digital Transformation and Maturity in Higher Education Institutions
(Pergamon-Elsevier Science Ltd, 2026) Sahin, Ersin; Gorcun, Omer Faruk; Gorcun, Ozhan; Kolemen, Cansu Sahin; Tirkolaee, Erfan Babaee
Digital transformation has become critical for today's universities' competitiveness and sustainable development. However, the success of digital transformation processes is directly related to investments in technological infrastructure, the accurate measurement of corporate digital maturity, and the effective management of these processes. This study aims to comprehensively evaluate digital maturity and the effectiveness of digital transformation processes in universities with a Multi-Criteria Decision-Making (MCDM) approach. To accurately address the ambiguity arising from uncertainty and expert judgments, Triangular Fuzzy Numbers (TFNs) and the Measurement Alternatives and Ranking according to Compromise Solution (MARCOS) method are combined. In addition, a SWOT analysis is performed to systematically specify the strengths, weaknesses, opportunities, and threats that shape the strategic digital transformation directions of universities. The developed model is then applied to a set of criteria wherein universities are assessed under various dimensions, such as digital infrastructure, human resources, governance, digital culture, and innovation. The findings reveal that universities with high levels of digital maturity can carry out their digital transformation processes more effectively and sustainably. It is also demonstrated that the proposed methodology is able to efficiently deal with strategic planning of digital transformation and maturity in higher education institutions.
Investigating Predictors of Online Dating Motivation
(John Wiley & Sons Ltd, 2024) Hamarat, Hazal
Occupational Health and Safety in Turkish Marine Aquaculture
(Turkish Marine Research Foundation-TUDAV, 2020) Firat, Kursat; Cabuk, Ahmet; Uyumsal, Selcuk
Aging in Turkey
(Faculty of Economics Osijek, 2020) Kilic, Burak; Kilic, Zafer
This study covers the services offered to the elderly, individuals who work in this field, statistical data on aging in Turkey, and similar issues. The data in this study was collected from the literature review and from written sources. In the literature, the concept of age is divided into two: biological and chronological. Although chronological age is the same in all humans, biological age varies according to individuals. Chronological age is the number of years a person has been alive. Biological age is the representation of the biological step as a unit of time. Aging is the state where individuals gradually lose their physical and psychological power. The increasingly elderly population has also caused the academic environment to focus on the field of older people. Moreover, the increasing elderly population has accelerated the process of developing national policies and plans in countries and the process of producing services in line with the developed plans and policies. According to the aging data of the United Nations, there is an increase in the number and proportion of elderly individuals in the world. As a result, in this case, Turkey does not differ, so the elderly population is increasing with each passing day.
An Evaluation on Growth Potential of the Small and Medium Scale Enterprises (SME) in Turkish Furniture Industry
(Academic Journals, 2011) Aksu, Baki; Koc, K. Huseyin; Karademir, Devrim
With its increasingly expanding uses, the furniture industry has become a basic industrial sector in the world, especially in the developed countries, and it represents 2% of the total labour and 2% to 4% of the total production. The global foreign trade of furniture was around $174 billion in 2008. Though it has been growing fast, the furniture industry in Turkey is far from the level in the developed countries. In regard to the Turkish furniture industry, 99% of which consists of small and medium scale enterprises, just like all the other industries, few data are needed to be able to make accurate evaluations. The current conditions in the small and medium scale enterprises have been neatly described in this study. It tries to offer solutions to the problems, analyze the competition opportunities and shed light for future studies by eliminating inadequate data. It is the first study in the field since there has not been such research which covers the whole country except for the regional ones. Also, this project is supplementary to the studies carried out by the researchers on the large-scale enterprises, the whole industry is analyzed.
Investigation the Effects of Treatment Plants on Heavy Metal Levels and Mutagenicity of Wastewaters
(Parlar Scientific Publications (PSP), 2022) Dartan, Guler; Cevik, Mehtap; Aksu, Burak; Can, Zehra Semra; Keskins, Yasar; Yurdun, Turkan; Susleyici, Belgin
Management of wastewater (WW) and protection of the aquatic ecosystem have become a major problem recently. Our objective was to determinate the chemical load and genotoxic potential of WWs before and after advance treatment, and also to foresee whether the pollutants harm the receiving environments where they were discharged. WW samples were collected from influent and effluent of an advanced wastewater treatment plant (AWTP) and discharge of School of Medicine (SoM). Spectrophotometric analyses showed that Pb levels in WWs were found to be over the cut off limit independent from seasonal change. Nitrogen (N) load is detected quite high before the treatment process. According to AMES test, mutagenic effect of AWTP in the absence of liver enzymes were found to be higher in influent (IR: 7.15; TA100) whereas lower in effluent (IR: 4.04; TA100). According to our results, advanced biological treatment might be insufficient in adequate elimination of Pb, N and P. However, further studies are required to validate our results.
An Approach to Predicting the Effect of Shadows from Surrounding Buildings on the Performance of Solar Photovoltaic
(Gazi Üniversitesi, 2025) Yongkuan, S.; Wei, N.; Shanwu, Z.; Garip, I.
For a photovoltaic system in an urban building, building shadow occlusion is an often-encountered problem, photovoltaic array covered area will change with time, resulting in the photovoltaic array output volt-ampere performance curve being also different with time. With the engineering analytical model of silicon solar cells, the series-parallel of electrical circuits theory, and the solar Angle change formula, an approach to predicting the effect of shadows from surrounding buildings on the performance of solar photovoltaics is established. The simulation results show the difference of the PV array’s I-V and P-V performance curves with periods. An actual test is carried out for the completed photovoltaic project with building shadow occlusion, and the comparison with Matlab simulation I-V and P-V performance curve proves the predicting model can describe the output performance of the PV array with building shadow occlusion. © (2025), (Gazi Universitesi). All rights reserved.
Predictive Impact of PI-RADS 3 Lesion Volume/Total Prostate Volume Ratio in Prostate Cancer Diagnosis in Biopsy-Naïve Patients Volume Ratio in Prostate Cancer Diagnosis in Biopsy-Naive Patients
(TÜBİTAK Scientific & Technological Research Council Turkey, 2025) Ozsoy, Emrah; Kutluhan, Musab Ali; Tokuc, Emre; Kayar, Ridvan; Demir, Samet; Meric, Kaan; Ozturk, Metin Ishak
Background/aim: To assess the potential of the ratio between PI-RADS 3 lesion volume and total prostate volume as a predictive parameter for guiding the decision to perform a biopsy in patients presenting with PI-RADS 3 lesions on multiparametric prostate magnetic resonance imaging (mpMRI). Materials and methods: A total of 749 patients who underwent mpMRI due to suspected prostate cancer between January 2014 and August 2023 were scanned. Based on predefined inclusion and exclusion criteria, 308 patients were included. Age, total prostate-specific antigen (PSA) value, prostate volume measured in mpMRI, mpMRI result, PI-RADS 3 lesion volume, and biopsy results were collected. The PI-RADS 3 ratio was calculated as PI-RADS 3 lesion volume/total prostate volume. PSA density (dPSA) was calculated. The patients were categorized according to their biopsy results as benign or malignant (subclassified by Gleason group grade), and the two groups were compared. Results: The average PI-RADS 3 ratio was 0.032 +/- 0.002. There were 230 (74.7%) patients in the benign group and 78 (25.3%) patients in the malignant group. There was a statistically significant difference detected in average prostate volumes (p < 0.001), dPSA values (p = 0.001), and PI-RADS 3 ratios (p < 0.001). The receiver operating curve analysis of PI-RADS 3 ratio indicated an area under the curve of 0.643 +/- 0.037. The optimal cut-off point was 0.026 with a sensitivity of 58.97% and a specificity of 66.96%. A positive, albeit weak, statistically significant relationship was found between PIRADS-3 ratios and dPSA values (rs rho = 0.261 and p < 0.001). Conclusion: PI-RADS 3 ratio may serve as an auxiliary clinical parameter alongside age, dPSA, and lesion volume alone in identifying more refined candidates for biopsy in the goal of patient care individualization.
A Novel High-Gain Cuk-Sepic Converter with Coupled Inductor for Renewable Energy Applications
(Gazi Üniversitesi, 2025) Mu, S.; Ling, F.; Li, N.; Wang, J.; Garip, I.
- The increase in photovoltaics, fuel cells, and power cells as a proportion of our energy structure can reduce dependence on traditional energy sources, which can result in energy conservation, emission reduction, and sustainable development. Power grid development has increasingly focused on integrating distributed energy and power grids. It proposes a technology for integrating the Sepic-converter and Cuk-converter. A primary winding is created from the Sepic’s intermediate energy storage inductor. A capacitor is added to the secondary winding to generate a voltage-doubling structure. Performance and efficiency are improved with this method. It maintains the continuous input and output current characteristics of the Cuk converter, making it compatible with DC buses and photovoltaic arrays. It is the passive clamping capacitor that absorbs the leakage inductor energy. The parasitic capacitance and switch are thereby reduced, and the switch is also subject to low voltage stress. This paper explores the working principle, performance parameters, and operating conditions of the converter in detail. Finally, an experimental platform was used to produce a 150W prototype. Experimental results were used to test and verify the validity of the previous theoretical analysis. © (2025), (Gazi Universitesi). All rights reserved.
The Relationship Between Childhood Trauma, Psychotic Symptoms, and Cognitive Schemas in Patients with Schizophrenia, Their Siblings, and Healthy Controls: Results from the Eu-Gei Study
(Cambridge University Press, 2024) Ucok, Alp; Noyan, Handan; Guloksuz, Sinan; Saka, Meram Can; Alptekin, Koksal; Atbasoglu, Cem; van Os, Jim
Background The relationship between childhood trauma (CT) and psychotic symptoms in patients with schizophrenia (SCZ), and subthreshold psychotic experiences in non-clinical populations is well-established. However, little is known about the relationship between subtypes of trauma and specific symptoms in patients, their siblings, and controls. It is also not clear which variables mediate the relationship between trauma and psychotic symptoms.Methods Seven hundred and forty-two patients with SCZ, 718 of their unaffected siblings and 1039 controls from three EU-GEI sites were assessed for CT, symptom severity, and cognitive schemas about self/others. CT was assessed with the Childhood Trauma Questionnaire, and cognitive schemas were assessed by The Brief Core Schema Scale.Results Patients with psychosis were affected by CT more than their siblings and controls in all domains. Childhood emotional abuse and neglect were more common in siblings than controls. CT was related to negative cognitive schemas toward self/others in patients, siblings, and controls. We found that negative schemas about self-mediated the relationship between emotional abuse and thought withdrawal and thought broadcasting. Approximately 33.9% of the variance in these symptoms was explained by the mediator. It also mediated the relationship between sexual abuse and persecutory delusions in SCZ.Conclusions Our findings suggest that childhood abuse and neglect are more common in patients with schizophrenia than their siblings and healthy controls, and have different impacts on clinical domains which we searched. The relationship between CT and positive symptoms seems to be mediated by negative cognitive schemas about self in schizophrenia.
Measuring Remote Working Skills: Scale Development and Validation Study
(Public Library of Science, 2024) Benligiray, Serap; Gungor, Abdullah Y.; Akbas, Ilkay
Remote work, one of the most significant working arrangements of today, requires certain employee skills. Although there are some hints, there is not much information in the literature on this subject. This study aims to identify the skills required for productive remote working activities and to develop a scale for measuring these skills. For this purpose, a thorough review of the literature, consultation with experts, and analysis of data obtained from four samples with remote working experience were all conducted. Within this context, item generation and content validation, initial factor structure analysis, and factor structure confirmation and construct validity examination were performed. Consequently, the Remote Working Skills Scale was developed, which has 36 items and five dimensions (cybersecurity, problem-solving, time management, verbal communication, and written communication).

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