İZÜ Araştırma ve Akademik Performans Sistemi
DSpace@İZÜ, İstanbul Sabahattin Zaim Üniversitesi’nin bilimsel araştırma ve akademik performansını izleme, analiz etme ve raporlama süreçlerini tek çatı altında buluşturan bütünleşik bilgi sistemidir.
Güncel Gönderiler
Öğe Türü: Yayın , Exploring Sustainable Tax Policy in Türkiye: A Qualitative Analysis of Corporate and Public Discourse in the Energy Sector(Virtus Interpress, 2026) Kazan, Gülçin; Kocamış, Tuğçe Uzun; Kazan, GülçinThis article examines the effect of sustainable taxation policies on public policy and institutional strategies for energy in Türkiye. The methodology of the study was to analyze the activity, sustainability, and integrated reports of a select number (10) of energy companies listed in the Borsa Istanbul (BIST) Sustainability Index over the period of 2021–2023 and to include relevant documents from public institutions in the qualitative content analysis. To complete the code creation process, the literature review and policy document analysis were categorized thematically. These categories included border carbon adjustment mechanism [BCAM] (sinirda karbon düzenleme mekanizmasi [SKDM]), carbon taxes, green finance tools, and tax incentives, which were the main themes identified through the thematic analysis. Through the analysis, it was evident that while businesses have not yet implemented the carbon tax model as an intentional strategy, they have made investments in renewable energy, energy-efficient practices, and received government incentives. Therefore, due to the ambiguity of carbon pricing instruments, there is considerable uncertainty regarding their implementation and significant institutional disparities in reporting such instruments, which create obstacles to the sector’s transformation. This article contributes to showing how removing uncertainties about carbon pricing, clearly defining incentives, and enhancing the capacity of sustainable finance contribute to the green transformation process in the case of Türkiye. These findings are also supported by the literature (Aydın, 2018; Bakış et al., 2022).Öğe Türü: Yayın , Search for Resonances Decaying to an Anomalous Jet and a Higgs Boson in Proton–Proton Collisions at √s = 13 TeV(Springer, 2026) Hayrapetyan, Aram A.; Makarenko, V. V.; Atakişi, İsmail Okan; Atakişi, İsmail OkanThis article has 2,419 authors. Abstract This paper presents a search for new physics through the process where a massive particle, X, decays into a Higgs boson and a second particle, Y. The Higgs boson subsequently decays into a bottom quark–antiquark pair, which is reconstructed as a single large-radius jet. The decay products of Y are also assumed to produce a single large-radius jet. The identification of the Y particle is enhanced by computing the anomaly score of its candidate jet using an autoencoder, which measures deviations from typical quark- or gluoninduced jets. This allows a simultaneous search for multiple Y decay scenarios within a single analysis. In the main benchmark process, Y is a scalar particle that decays into a W boson pair. Two other scalar Y decay processes are also considered as benchmarks: decays to a light quark–antiquark pair, and decays to a top quark–antiquark pair. A fourth benchmark process considers Y as a hadronically decaying top quark, arising from the decay of a vector-like quark into a top quark and a Higgs boson. Data recorded by the CMS experiment at a center-of-mass energy of 13 TeV in 2016–2018, corresponding to an integrated luminosity of 138 fb−1 , are analyzed. The search covers X masses between 1.4 and 3.0 TeV and Y masses between 90 and 400 GeV, with all simulated signals produced in the narrow-width approximation. No significant excess above the standard model background expectation is observed. The most stringent upper limits to date are placed on benchmark signal cross sections for various masses of X and Y particlesÖğe Türü: Yayın , Safety-Relevant Contaminants and Nutritional Quality of Hazelnut Skin and Pumpkin Seed Proteins(John Wiley and Sons Ltd, 2026) Mehdizadehtapeh, Leila; Tekiner, İsmail Hakkı; Gökşen, Gülden; Ajal, El Amine; Yılmazer, Yasemin B.; Bajoub, Aadil; Bostancı, Ferhat; Ennahli, Said; Yılmazer, Yasemin; Bostancı, FerhatBACKGROUND: The agro-food industry generates by-products and waste. These may be valorized as protein sources that could be used as alternatives to soy and pea in line with the EU Farm to Fork Strategy. This study evaluated potential safety-relevant contaminants and the nutritional quality of hazelnut skin protein (HSP) and pumpkin seed protein (PSP) compared with conventional pea protein (PP) and soy protein (SP). RESULTS: Microbial contaminants, total aflatoxin, pesticides, and polyaromatic hydrocarbons were assessed as satisfactory. Arsenic, cadmium, and lead slightly exceeded regulatory limits, whereas mercury was undetected. Total protein content was 53.93% in HSP, 57.79% in PSP, 48.86% in PP, and 57.89% in SP. All samples largely met the essential amino acid requirements of the World Health Organization (WHO)/Food and Agriculture Organization of the United Nations (FAO). In vitro cytotoxicity assays showed that HSP and SP significantly affected the viability of colon cancer cells (HCT-116) while remaining non-cytotoxic to fibroblast cells (L929), depending on exposure time and protein concentration (P < 0.05), indicating potentially safe. During in vitro digestion, following the Infogest protocol, HSP exhibited high stability at pH 3.4 with moderate solubility of 20 mg L⁻¹, similar to PSP. Hazelnut skin protein also displayed higher antioxidant activity than SP and PP, reaching 20 mmol TE g⁻¹ after intestinal digestion between 120 and 240 min. CONCLUSION: Hazelnut skin and pumpkin seed proteins could serve as alternative protein sources with satisfactory safety and nutritional quality. Further research should focus on safety and nutritional standardization to support their sustainable use as healthy ingredients.Öğe Türü: Yayın , The Effect of Art-Based Mandala Intervention on Death Anxiety and Anger Levels in Elderly Adults Living in Nursing Homes: A Randomized Controlled Study(Elsevier Inc., 2026) Dinçer, Berna; Demir, Serdar; Demir, Kemal; Özalp, Kerime; Ayaz, Elif Yıldırım; Bahçecik, Ayşe Nefise; Çelik, Selda Gedik; Bozkurt, Deniz; Bahçecik, Ayşe NefiseObjective: This study aimed to investigate the effect of art-based mandala intervention on anger and death anxiety in older adults residing in a nursing home.Methods: A randomized controlled experimental study with 80 participants (experimental group n = 40; control group n = 40) was conducted. The experimental group participated in mandala coloring three times a week for 12 weeks. Data were collected using a descriptive form, a death anxiety scale, and the State-Trait Anger Expression Inventory.Results: Post-mandala, the experimental group showed significantly lower anger scores compared to the control group (p = 0.001). Statistically significant differences were found in State Anger, Anger-In, Anger-Out, and Anger Control (p < 0.01). A significant decrease in death anxiety scores was observed in the experimental group (p < 0.01). Anger levels explained 42.4% of the variance in death anxiety (p = 0.001).Conclusion: Mandala coloring is an effective intervention for reducing anger and death anxiety in elderly nursing home residents.Öğe Türü: Yayın , Between the Teacher's Heart and the Student's Mind: The Relationship Between Emotional Intelligence and Social Skills in Primary School(John Wiley and Sons Inc, 2026) Çakır, Ogün; Çakır, OgünThis exploratory study investigates the association between Turkish primary school teachers' emotional intelligence (EI) andstudents' social skills (SS). Data were collected from 12 teachers and 321 students and analysed using a multilevel linear mixed-effects model to account for students nested within classrooms. Teachers' total EI scores were positively associated with students'SS scores (B = 0.079, p = 0.006), indicating a modest effect. The findings provide initial multilevel evidence from Turkey and sug-gest that EI-focused professional learning may be relevant for supporting students' social functioning in primary school. Giventhe small number of classrooms/teachers (Level 2, n = 12), the evidence should be interpreted as exploratory and warrants repli-cation with larger, more diverse teacher samples. The study contributes novel multilevel evidence and may inform the integrationof EI-focused components into teacher education and professional development in Turkey.
