Mudanya University Institutional Academic Archive System
Mudanya University's Dspace system is a platform that digitally stores and opens academic studies. Academic content such as articles, presentations, theses, books, and reports are included here. Dspace@Mudanya provides easy access, making it a valuable resource for researchers and students. It serves as a digital archive for Mudanya University's academic outputs, facilitates access to scientific information and supports its sharing. For more information and assistance, please contact us.
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Recent Submissions
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A RESEARCH TO EXAMINATE THE RELATIONSHIP BETWEEN BRAND HATE, NEWOM AND BOYCOTTING BEHAVIOR
(KENAN ÇELİK, 2026-04) Dişli Bayraktar, Eda; Alp, Binnaz; Alp, Mustafa; Kalça, Adem; 409828
This study aims to examine the effect of brand hate on consumers’ boycott behavior by exploring the mediating role of negative word-of-mouth (NeWOM). Data were collected from 396 consumers through an online survey distributed via social media and analyzed using Structural Equation Modeling. The findings reveal that brand hate significantly increases NeWOM; NeWOM influences boycott intention and partially mediates the relationship between brand hate and boycott behavior. Overall, strong feelings of brand hate enhance consumers’ tendency to spread negative opinions and experiences, which directly or indirectly strengthen their intention to boycott; thus, the study contributes to understanding the negative emotional and communicational dimensions of consumer–brand relationships.
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Understanding the Impact of Artificial Intelligence Literacy on University Students Career Planning: An Empirical Study
(Ankara Hacı Bayram Veli University, 2026-04) Yılmaz, Esra; Çetin, Elif; 426540
The subject of artificial intelligence, which we encounter in almost every aspect of life, is one of the most discussed topics, especially in business life. In the age of artificial intelligence we are in, people have to know the competencies required by this age. In this status, the study aims to examine the impact of artificial intelligence literacy on career planning. Data obtained from 361 students at Bolu Abant İzzet Baysal University aim survey method were analyzed with Structural Equation Model-Path Diagram using SPSS 25- AMOS programs. According to the findings, awareness and usage, which are the size of artificial intelligence literacy, don’t affect the career planning dimensions of career awareness, vocational awareness, belief in career, accuracy of selection and adequacy of education. While the evaluation dimension of artificial intelligence literacy negatively affects professional awareness, career belief, and the accuracy of selection, it doesn’t affect career awareness and adequacy of education. While the ethical dimension of artificial intelligence literacy positively and significantly affects professional awareness, belief in career, accuracy of selection and adequacy of education, it doesn’t affect career awareness. It is thought that artificial intelligence literacy will have significant impact on university students' conscious actions in their career planning.
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Conversion Bariatric Surgery, Ketogenic Diet, and Intermittent Fasting in Bariatric Surgery Patients with Recurrent Weight Gain: a Prospective Randomized Controlled Trial
(Springer, 2026-04) Şen, Seher; Erdem, Nihal Zekiye; Durak, Doğukan; 409851
Background
Recurrent weight gain (RWG) after metabolic and bariatric surgery (MBS) increases the need for alternative treatment strategies. This study evaluated the effects of conversion bariatric surgery (CBS), very low-calorie ketogenic diet (VLCKD), and time-restricted intermittent fasting (TRIF) on anthropometric measurements, biochemical parameters, and dietary habits in patients who experienced suboptimal clinical response (SCR) or RWG after bariatric surgery.
Methods
This study included 56 patients, allocated to four groups (CBS, VLCKD, TRIF, and control; n = 14 each). Weight, waist-hip measurements, body composition, glycemic/lipid profile, and serum levels of specific vitamins and minerals were assessed at baseline and at week 6. Energy and nutrient intakes were calculated using BeBiS-9.
Results
Data were analyzed with SPSS 22.0. The percentages of total and excess weight loss differed significantly among the groups (p < 0.001), with CBS (9.07–28.5%), VLCKD (9.12–31.85%), TRIF (5.09–14.97%), and control (0.97–3.40%). Additionally, the pre- and post-intervention differences in fasting insulin, HOMA-IR, HbA1c, cholesterol, LDL-C, triglyceride, and uric acid levels varied significantly among the groups. VLCKD showed a more prominent effect on glycemic parameters, whereas CBS had a more beneficial impact on the lipid profile. In intervention groups, daily energy, carbohydrate and fat intake (g/day) decreased; protein percentages increased; the frequency of consumption of energy-dense foods decreased; and healthy food preferences increased.
Conclusions
Consequently, clinically significant improvements in weight management and metabolic parameters were observed in CBS, VLCKD, and TRIF groups under multidisciplinary team follow-up. These findings suggest that dietitian-led VLCKD and TRIF interventions may be considered as alternative treatment options before deciding on CBS.
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Analytical ETBDW Formulation for Electromagnetic Scattering by Circular Apertures on PMC Surfaces
(Springer, 2025-12) Altınel, Mustafa; Yalçın, Uğur; 414019
This study presents and validates a uniform analytical formulation for electromagnetic diffraction from circular apertures on perfect magnetic conductor (PMC) surfaces using the extended boundary diffraction wave (ETBDW) theory. The proposed PMC–ETBDW model incorporates an in-phase reflection coefficient (
= +1) within the boundary kernel, producing a physically continuous and energy-conserving representation of diffracted fields across illuminated, transition, and shadow regions. Expressed through detour parameters and Fresnel-type transition functions, the formulation eliminates phase discontinuities and maintains amplitude normalization consistent with theoretical energy conservation. Numerical evaluations performed for representative aperture radii (a = λ–3λ) and observation distances (r = 3λ–9λ) confirmed the expected 1/r amplitude decay, smooth Fresnel–Fraunhofer transitions, and constructive interference associated with magnetic reflection. Comparative analyses with PEC and opaque boundaries verified that in-phase magnetic reflection enhances on-axis field intensity and preserves phase continuity near the shadow boundary, in full agreement with the dual electromagnetic behavior predicted for PMC interfaces. Beyond its theoretical completeness, the proposed formulation provides a compact and computationally efficient framework for diffraction modeling and hybrid solver integration, offering practical applicability to magnetic coatings, low-RCS reflectors, and metasurface-based structures.
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DAİRESEL AÇIKLIKTAN OLUŞAN TOPLAM ALANLARIN KARAKTERİZASYONU: OPAK, PEC VE PMC YÜZEYLER İÇİN KARŞILAŞTIRMALI ANALİZ
(Bursa Uludağ Üniversitesi, 2026-01) Altınel, Mustafa; Yalçın, Uğur; 414019
Bu çalışma, dairesel bir açıklıktan yayılan toplam alanların Opak, Mükemmel Elektrik İletken (PEC) ve Mükemmel Manyetik İletken (PMC) yüzeylerdeki davranışlarını karşılaştırmalı olarak incelemektedir. Toplam alan hesaplamalarında Sınır Kırınım Dalgası Teorisi (SKDT) ile Genelleştirilmiş SKDT (GSKDT) yöntemleri kullanılmış, analizler, Miyamoto ve Wolf tarafından tanımlanan vektör potansiyeli temeline dayandırılmıştır. Elde edilen non-uniform toplam alan ifadeleri, Detour parametresi ve Fresnel fonksiyonunun asimptotik özellikleri kullanılarak uniform forma dönüştürülmüştür. Opak yüzeylerde yalnızca gelen dalga dikkate alınırken, PEC ve PMC yüzeylerde hem gelen hem de yansıyan dalgalar hesaba katılmıştır. Farklı açıklık yarıçapları ve gözlem mesafeleri için toplam alanın uzaysal dağılımı grafiksel olarak karşılaştırılmış, yüzey tiplerinin alan üzerindeki etkileri ayrıntılı biçimde analiz edilmiştir. Sonuçlar, toplam alanın genlik ve faz karakteristiğinin yüzey tipine bağlı olarak belirgin biçimde değiştiğini göstermekte; özellikle PEC yüzeylerde yüksek frekanslı girişim desenleri, opak yüzeylerde ise daha düşük genlikli ve düzgün bir dağılım gözlenmektedir. Elde edilen bulgular, yüzey özelliklerinin toplam alan davranışı üzerindeki rolünü hem nitel hem de nicel olarak ortaya koymakta; anten tasarımı, elektromanyetik kalkanlama ve radar kesit alanı (RCS) azaltımı gibi mühendislik uygulamalarında yüzey seçimi ve optimizasyonu için yol gösterici bir referans sunmaktadır.
