Scopus İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12573/395

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  • Article
    Prosocial Behavior as Bridge and Buffer: Exploring Its Dual Role between Stress and Mental Health in Emerging Adults
    (Springer, 2026-03-16) Coskun, Muhammet; Arslan, Gokmen; Genc, Emel; Caprara, Gian Vittorio
    The present study investigated the dual role of prosocial behavior among emerging adults in a non-Western cultural con-text. Within this scope, first, adaptation and validation of the Adult Prosocialness Behavior Scale (PBS) was carried out for Turkish population. Then, it tested both mediating and moderating functions of prosocial behavior in the links from stress to subjective wellbeing (SWB) and quality of life. To this end, a sample of 419 emerging adults (41.3% males and 58.7% females) completed an online survey. Results revealed Turkish version of the APBS to be a reliable and valid mea-surement tool for assessing prosocial behavior. Regarding the main hypotheses, serial multiple mediation analysis revealed that perceived stress predicted quality of life through the sequential pathway of prosocial behavior and SWB. Additionally, the moderated-mediation analysis confirmed the moderating role of prosocial behavior in the relationship between stress. Nevertheless, moderated mediation index did not reveal a significant conditional indirect effect of prosocial behavior for the indirect path from stress on quality of life through SWB. Overall, findings suggest that prosocial behavior plays a dual role as both a 'bridge' (mediator) and a 'buffer' (moderator) in the relationship between stress and mental health.
  • Article
    Sensitive Hybrid Plasmonic Refractive Index Sensor Based on Ag Cross-Grating Nanoantenna and Au Quantum Dot upon SiO2 Nanowire
    (IOP Publishing Ltd, 2026-04-03) Sanli, Atif Kerem; Kilic, Veli Tayfun; Tabaru, Timucin Emre
    This study presents a distinctive hybrid plasmonic sensor architecture combining a silver (Ag) cross-shaped nanoantenna with a gold (Au) quantum dot (QD) for enhanced refractive index sensing applications. The structure consists of a silicon dioxide (SiO2) substrate and a cylindrically shaped SiO2 wire on it, topped with a silicon nitride (Si3N4) dielectric layer and an Ag cross grating, with an Au QD positioned at the center. Using free and open source 3D Finite-Difference Time-Domain (FDTD) simulations, exceptional electric field enhancement at the resonant wavelength of approximately 639-667 nm is demonstrated. The optimized structure achieves remarkable quality factors (Q-factors) exceeding 267 for biological media, representing among the highest reported values for plasmonic sensing structures. Unlike conventional red-shift sensors, our design exhibits a distinctive blue-shift sensing behavior arising from hybrid plasmonic mode coupling, achieving sensitivities ranging from 190 to 344 nm RIU-1 for various analytes, including water, blood, PDMS, body fat, ethanol, and glass. The ultrasharp resonances (FWHM similar to 2.3 nm) combined with intense field enhancement make this design highly suitable for biosensing applications.
  • Article
  • Article
    Parametric Study on the Behavior of CFRP-Strengthened Reinforced Concrete Deep Beams with Cut Circular Web Openings in Shear Spans
    (Nature Portfolio, 2026-02-17) Yagmur, Eren
    Web openings in reinforced concrete deep beams are often necessary for functional purposes but substantially reduce structural performance. Carbon fiber-reinforced polymer (CFRP) strengthening is commonly employed to mitigate these effects. Previous studies typically examined openings in regions without stirrups or assumed closed stirrup configurations, overlooking the frequent stirrup damage that occurs in practice due to the high shear reinforcement in deep beams. In this study, three specimens from a prior experimental program were modeled in ABAQUS, and the numerical results were validated against experimental data. Openings of varying diameters were introduced by cutting reinforcements, and the beams were subsequently strengthened with CFRP laminates, and a parametric study was conducted. Results showed that increasing opening diameter markedly reduces load-carrying capacity and energy absoption, while thicker CFRP laminates partially restore performance. For example, a 300 mm opening in a 500 mm high unstrengthened beam reduced load capacity by 56% and energy absorption by 87%. Even when the opening diameter was less than one-third of the beam height, 1.8 mm CFRP laminates provided only limited improvement. Deep beam performance was strongly influenced by web opening size, and the effectiveness of CFRP strengthening was limited when stirrup integrity was compromised.
  • Article
    Citation - Scopus: 4
    Integrated Querying and Version Control of Context-Specific Biological Networks
    (Oxford University Press, 2020-01-01) Coşkun, Mustafa; Grama, Ananth; Koyutürk, Mehmet; Cowman, Tyler
  • Article
    Feasibility Analysis of Granitic Rocks for Use in the Dimension Stone Industry
    (Univ Zagreb, FAC Mining, Geology & Petroleum Engineering, 2026) Koken, Ekin
    This study presents two objective evaluation tools for assessing the feasibility of granitic rocks in dimension stone applications. The developed methods integrate fundamental physical and mechanical properties, including dry density (rho d), effective porosity (ne), P-wave velocity (Vp), uniaxial compressive strength (UCS), and Böhme abrasion value (BAV). Feasibility analyses based on the conditional formatting (CF) and ranking method RM reveal that the adopted input parameters are essential for determining the suitability of granitic rocks as dimension stones. The strong relationship between the CF and RM results highlights their consistency and broad applicability. Both methods exhibit good agreement with the recommendations of the American standard for granitic rocks. Consequently, the suggested methods provide practical guidance for selecting suitable rock exposures in field studies, also offering a time- and energy-efficient decision-making framework for the dimension stone industry. To comprehensively evaluate the strengths and limitations of the proposed approaches, it is recommended that these tools be applied to a wider range of dimension stone types and geological settings.
  • Conference Object
    Citation - Scopus: 2
    Combining Classifiers for Protein Secondary Structure Prediction
    (Institute of Electrical and Electronics Engineers Inc., 2017-09) Aydin, Zafer; Uzut, Ömmu Gülsüm
  • Article
    Data-Driven Medical Devices and the EU MDR: Mapping Gaps in Standards for Regulatory Compliance
    (Springer Nature, 2026-03-09) Epiphaniou, Gregory; Harrison, Stuart; Khadka, Anita; Maple, Carsten; Matragkas, Nikolaos; Islam, Saif Ul; Atmaca, Ugur Ilker
  • Article
    Views on Climate Change, Climate Action and Mental Health, in Young People with and without Existing Depression Symptoms: A Qualitative Study
    (Elsevier, 2026-01) Kaya, M. Siyabend; Hawkins, Ed; McCabe, Ciara
    Background: Youth mental health is in crisis. Climate change has the potential to tip more young people into depression and anxiety. Knowing how young people with and without depression symptoms view climate change could guide interventions to mitigate against climate induced mental health issues. Materials and Methods: We carried out in-depth, semi-structured interviews with (N = 27) young people aged 18-25 (M-age = 20.3 years). Participants were grouped as healthy controls (C, N = 16, < 16 score on Mood and Feelings Questionnaire, MFQ) or had high depression symptoms (HD, N = 11, >= 27, MFQ). Using thematic analysis, we explored participants views on climate change, climate action, climate messaging, climate agency and mental health. Results: From the interviews, eight key themes emerged: (1) Negative environmental events - Climate change was understood as ranging from weather changes to natural disasters. (2) Mental health impacts - Most participants reported increased anxiety and depression, with the HD group being more pessimistic about climate change prevention. (3) Benefits of action - Focus on individual efforts. (4) Non-disruptive vs. disruptive actions - Preference for non-disruptive solutions. (5) Hope and Fear in climate messaging - balance is needed. (6) Local and global action - Emphasis on combining both approaches. (7) Leadership - Responsibility placed on politicians, institutions, and environmentalists. (8) Shared responsibility - Families, educators, governments, and celebrities all have a role in climate action. Conclusion: These findings offer valuable insights into the perspectives of young people with and without existing symptoms of depression. Notably, identifying differences-such as varying levels of climate pessimism-based on depression status highlights the importance of climate communication strategies that not only effectively address climate change but also safeguard youth mental health. This is important as those with existing depression symptoms may be more vulnerable to the psychological impacts of climate change.
  • Article
    The Synergistic Engine of Sustainable Entrepreneurship: Fueling AI-Driven Circular Transformation and Social Entrepreneurial Orientation with Knowledge Integration and Digital Capabilities
    (Elsevier B.V., 2026-09) Shah, Syed Haider Ali; Murad, Majid; Wang, Mansi
    Drawing on dynamic capability theory, this study examines how AI-driven circular transformation (AIT) and social entrepreneurship orientation (SEO) contribute to sustainable entrepreneurial success (SES). This study further investigates the mediating role of knowledge integration (KNI) and the moderating effect of digital capabilities (DIC) in these relationships. Data were collected from 442 top-level managers working in high-tech manufacturing industries in Guangdong Province, China, and were analyzed using partial least squares structural equation modeling. The empirical findings suggest that both AI-driven circular transformation and SEO have a positive influence on SES. Moreover, KNI is found to significantly mediate the relationships between AIdriven circular transformation, SEO, and SES. Additionally, DIC positively moderate the relationship between KNI and SES. Furthermore, this study offers implications for managers and policymakers seeking to promote sustainable entrepreneurship. The results highlight the importance of integrating AI-enabled circular practices with socially oriented entrepreneurial strategies to enhance long-term entrepreneurial outcomes. Finally, the results suggest that investments in DIC and effective KNI mechanisms can strengthen firms' dynamic capabilities, thereby supporting sustainability-oriented innovation and entrepreneurial success.