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Araştırmacılar(757)

• Acar, Ramazan
• Acar, Sedat
• Acun, Serdar
• Adıgüzel, Ragıp
• Adlı, Fatih
• Aglar, Erdal
• Ak, Ferit
• Ak, Tuba Parlak
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• AKBULUT, Gülçin BEKER
• Akçay, Özge
• Akgul, E.
• Akgül, Ceylan Sülü
• Akgül, Melek
• Akkurt, Nevzat
• Akkus, Sukran
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• Akmaz, Düzgün
• Akpinar, Tuba
• Akpolat, Mustafa
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• Aksakal, Bünyamin
• Aksoy, M.E.
• Aksoy, Mustafa
• Aksoy, Tugay
• Aksu, Önder
• Aktağ, Alican
• Aktağ, Işıl
• Akyol, Sinem
• Alatas, Bilal
• Alataş, Mevlüt
• Albayrak, Veysel
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• Alişer, Ahmet Bedrettin
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• Alp, Sumru Anık
• Alparslan, Dilek
• AlpDal, Nursel
• Altı, Aziz
• Altınterim, Başar
• Angur, G. Ersever
• Angur, Gafure Ersever
• Anik, Kerem
• Apaydın, Murat B.
• Argın, Yeşim
• Arıcan, Ömer Faruk
• Ariç Sürme, Seda
• Aritürk, Necmi
• Arslan, Ali
• Arslan, İlyas
• Arslan, Kürşat
• Arslan, Sevda
• Arslanoğlu, Suat
• Artuğer, Fırat
• Asalıoğlu, Adem
• Asam, Eren

• MakaleYalnız künye2027Scopus SJRQ2/r/munzur/1135
  Design, structural characterization, and simulated radiation-transport assessment of high-entropy (GdErSmEuYb)2X2O7 (X = Hf, Zr, Ce, Si) rare-earth oxides

  Güler, Ömer; Güler, Seval Hale; Yayla, Nihal; Baykal, Duygu Sen; Durmus, Hasan; Tekin, Huseyin Ozan; ALMisned, Ghada

  This study investigates the structural, microstructural, surface-chemical, and radiation attenuation behaviour of high-entropy rare-earth oxide (HEO) powder compositions synthesized as TBC-related candidate coating materials, whose radiation attenuation potential was assessed within a computational Inconel-718-based sandwich model. Four compositions, namely (GdErSmEuYb)2Hf2O7, (GdErSmEuYb)2Ce2O7, (GdErSmEuYb)2Zr2O7, and (GdErSmEuYb)2Si2O7, were synthesized via high-energy ball milling followed by calcination at 1200 °C. X-ray diffraction results revealed the formation of distinct crystal structures depending on B-site chemistry, including defective fluorite and silicate-type phases. SEM-EDS mapping confirmed homogeneous elemental distribution, while XPS analysis demonstrated mixed valence states and different oxygen vacancy concentrations across the compositions. To evaluate radiation attenuation performance, a sandwich-type geometry consisting of a 10 mm Inconel-718 core with symmetrically defined simulated HEO layers was modelled using Monte Carlo simulations. Gamma-ray transmission was analyzed over an energy range of 0.276-1.332 MeV, and fast neutron attenuation was assessed at 4.5 MeV. The results showed that transmission factors decreased with increasing coating thickness, with the effect being more pronounced at lower photon energies. Among the investigated compositions, the Hf-based system exhibited the most favorable predicted attenuation response for both gamma rays and fast neutrons under the defined simulation conditions. Theoretical half-value layer calculations also showed good agreement with the simulation results. Overall, the findings indicate that high-entropy rare-earth oxide coatings may provide an additional radiation attenuation contribution when incorporated as layers in Inconel-718-based systems. However, since direct thermal-barrier properties such as thermal conductivity, thermal diffusivity, thermal cycling resistance, and thermal-stress behavior were not evaluated in the present work, the present study should be interpreted as a structural and radiation-transport assessment of TBC-related coating candidates rather than a direct demonstration of thermal-barrier performance.

  İncele
• MakaleAçık Erişim2026Scopus SJRQ1/r/munzur/4701
  Upcycling Agricultural Biomass into Functional Bio-Oils through Pyrolysis: Toward Sustainable Rejuvenation of Asphalt Binder

  Furtana Yalcin, Beyza; Yilmaz, Mehmet; Yalçin, Erkut; Vural Kok, Baha

  This study investigates the feasibility of utilizing bio-oils derived from agricultural waste materials (such as straw, olive pomace, and pine cones) as rejuvenating additives in reclaimed asphalt pavement (RAP) containing bituminous mixtures, offering a sustainable and environmentally friendly approach in asphalt technology. The primary objective of the study is to enhance the physical and mechanical properties of aged binders using ecofriendly alternatives, thereby developing high-performance asphalt mixtures without harming the environment. The bio-oils, produced through pyrolysis, were evaluated in comparison with two commercial rejuvenators. Key performance criteria, including Marshall stability, moisture damage resistance (TSR), indirect tensile stiffness modulus (ITSM), and fatigue life, were tested. The results indicate that natural rejuvenators not only soften the aged binder but also effectively balance the flexibility, strength, and deformation resistance of the mixture. Notably, straw oil exhibited superior performance in terms of both high stability and extended fatigue life, while olive pomace oil demonstrated remarkable success in moisture resistance. Although commercial additives were effective to a certain extent, they failed to achieve the same level of structural compatibility and sustainability provided by natural bio-oils. In this regard, the study provides strong evidence that agricultural biomass waste can serve as a value-added solution in asphalt pavements, in alignment with the principles of the circular economy. In conclusion revealed that mixtures containing 75% RAP rejuvenated with straw oil achieved 11% higher Marshall stability and up to 14.5 times longer fatigue life compared to virgin mixtures, while olive pomace oil-based mixtures reached a TSR value of 81.5%, demonstrating superior moisture resistance.

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• MakaleAçık Erişim2026Scopus SJRQ2/r/munzur/4034
  A New Metacognitive Confidence Calculation Approach Based on Large Language Models for Natural Language Explanations

  Yilmazer Gundem, Merve; Sahin, Simay; Karakose, Mehmet

  Traditional methods used to measure metacognitive confidence rely on superficial features such as word count and ambiguity and therefore fail to adequately reflect the level of metacognitive confidence in statements. In this study, in addition to traditional text-based confidence measures, we used a Large Language Model (LLM) to directly analyze confidence and its ratio in statements. LLM-based confidence scores were calculated on statements from the e-SNLI and CoS-E open-source datasets, and the prediction performance obtained with traditional features was compared. The results indicate that traditional surface-level text features explain the variance in LLM-generated confidence scores to a limited extent, and that LLM-based scores are significantly correlated with independent researcher evaluations. This study contributes to the literature by offering a scalable and reproducible analytical framework for measuring metacognitive confidence. It is believed that the findings can be directly applied, particularly in applications where trust is critical, such as automated software test scenario generation, decision support systems, and risk management. The use of LLMs offers a framework for the LLM-based analysis of potential metacognitive confidence signals in natural language explanations by examining the sense of confidence and certainty with which statements are presented, rather than their factual accuracy.

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• MakaleAçık Erişim2026Scopus SJRQ3/r/munzur/4586
  Investigation of Dielectric Constant and Electrical Conductivity of Poly(MA-co-MMA)/Ce(NO3)3 Composites by Response Surface Methodology for Advanced Dielectric Applications

  Torgut, Gulben; Incesu, Rabia

  In this study, poly(maleic anhydride-co-methyl methacrylate) [poly(MA-co-MMA)] copolymer and their Ce(NO3)3-filled composites were synthesized and systematically investigated. The copolymer was prepared via free radical polymerization using azobisisobutyronitrile (AIBN) as the initiator in 1,4-dioxane medium. Poly(MA-co-MMA)/Ce(NO3)3 composites were fabricated through a solution mixing technique in accordance with the response surface methodology (RSM) design. Fourier transform infrared spectroscopy (FTIR) results indicated that no significant chemical interaction occurred between the polymer molecule and Ce(NO3)3 particles. Scanning electron microscopy (SEM) images revealed a relatively uniform dispersion of Ce(NO3)3 particles within the polymer, resulting in a rougher surface with increasing filler content and that aggregation occurs at 20 wt%. The presence of Ce(NO3)3 particles in the polymer was confirmed by x-ray diffraction (XRD) analysis. The effects of frequency, applied voltage, and Ce(NO3)3 content on dielectric constant (epsilon) and electrical conductivity (sigma) were optimized using RSM, and the significance of these parameters was evaluated by analysis of variance (ANOVA). An increase in Ce(NO3)3 content significantly enhanced the electrical conductivity, while the applied voltage exhibited no statistically significant effect on dielectric properties. ANOVA results identified Ce(NO3)3 content as the most influential parameter in the developed model.

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• MakaleAçık Erişim2026Scopus SJRQ3/r/munzur/4613
  The relationship between prenatal attachment and death anxiety in high-risk pregnancies

  Kasimoglu, Necla; Bas, Nazan G.

  This study aims to examine the relationship between prenatal attachment and death anxiety in high-risk pregnancies. The study, a descriptive and correlational design, was conducted with 158 women with high-risk pregnancies in eastern T & uuml;rkiye between May and December 2024. AData were collected using a socio-demographic form, the Prenatal Attachment Inventory, and the Templer Death Anxiety Scale.The mean score on the Prenatal Attachment Inventory (PAI) was 62.1 +/- 10.84, while the mean score on the Templer Death Anxiety Scale was 6.9 +/- 2.99. A positive correlation was found between PAI and Death Anxiety scores (r = .169, p < .005). Death anxiety was predicted by maternal age and the level of prenatal attachment

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• MakaleAçık Erişim2026Scopus SJRQ1/r/munzur/4096
  Ellagic Acid Mitigates Lead (Pb)-Induced Toxicity in Cyprinus carpio: A Multi-Biomarker Assessment of Hematological, Immunological, and Oxidative Stress Responses Supported by Molecular Docking

  Eroglu, Mucahit; Cakmak, Mehmet Nuri; Pala, Aysegul; Uslu, Harun; Yonar, Serpil Mise; Ispir, Unal; Orhan, Cemal; Yonar, Muhammet Enis

  Lead (Pb) is a widespread environmental pollutant that induces systemic toxicity in aquatic organisms primarily through oxidative stress, hematological disruption, and immune dysfunction. This study investigated the protective effects of ellagic acid (EA) against Pb-induced toxicity in common carp (Cyprinus carpio) using a multi-biomarker approach and molecular docking. Fish were assigned to six experimental groups: control, EA-treated, Pb-I, Pb-I + EA, Pb-II, and Pb-II + EA. Fish in the Pb-I and Pb-II groups were exposed to 2.5 and 5 mg/L Pb, respectively, while EA was administered via diet at 100 mg/kg for 14 days. At the end of the exposure period, hematological indices, innate immune parameters, and oxidative stress biomarkers were assessed in blood, liver, kidney, and gill tissues. Pb exposure caused marked hematological impairment, suppressed immune responses, increased malondialdehyde levels, and disrupted antioxidant defense by reducing SOD, CAT, GSH-Px, and GSH levels while increasing GST activity. In contrast, dietary EA supplementation significantly mitigated Pb-induced alterations, improved hematological and immunological responses, reduced lipid peroxidation, restored antioxidant capacity, and normalized GST activity to control levels. Molecular docking analyses further showed that EA interacts with hemoglobin and immunoglobulin M, supporting its potential role in preserving oxygen transport and immune functions under Pb-induced stress. Overall, the findings demonstrate that Pb-induced toxicity involves coordinated disruption of redox homeostasis and immune function, whereas EA exerts a multi-target protective effect through biochemical and molecular mechanisms. This study provides mechanistic insight into chemical-biological interactions and supports the potential application of natural bioactive compounds in mitigating heavy metal-induced toxicity.

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• MakaleAçık Erişim2026/r/munzur/4625
  The paradox of discourse, representation, and integration in Germany: discursive responses of four german federal parties and turkish politicians within the axis of Kanal Avrupa TV's Bakış Açısı Program (2005-2012)

  Senol, Sengul

  This study analyzes integration and education policies in the German states of North Rhine-Westphalia and Lower Saxony between 2005 and 2012, within the framework of a multifaceted struggle for hegemony between state actors and politicians of Turkish origin. Using Norman Fairclough's Critical Discourse Analysis (CDA) methodology, the research examines the political discourses in Kanal Avrupa TV's Perspective program, analyzing the positioning of the immigrant subject through textual, discursive, and social practice dimensions. The analysis reveals the discursive differences among the actors representing German state rationality; in this context, a spectrum is observed ranging from the CDU's conservative paternalism to the SPD's economic rationality and the Greens' multicultural participation philosophy. On the other hand, this institutional structure creates a tense space between the German rationality, which confines the immigrant to 'individual integration performance,' and Turkey's protective discourse centered on mother tongue and diasporic identity. The harsh criticisms of Turkish politicians, particularly regarding issues such as obstacles to family reunification and Jugendamt (Youth Welfare Office) practices, demonstrate Turkey's positioning as a new and protective 'transnational actor' towards the diaspora. The study reveals that instead of being caught in this power struggle between Ankara and Berlin, third-generation immigrants are constructing their own independent discourses of 'participation' (Teilhabe) against institutional racism; therefore, what is happening is not an integration crisis, but a demand for equal citizenship.

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• MakaleYayıncıda açık erişim2026Scopus SJRQ1/r/munzur/4235
  Effects of 8-week plyometric training program on balance, reaction time, and attention on elite adolescent female taekwondo athletes

  Genç, Harun; Türkmen, Mustafa; Tekin, Irem; Cigerci, Ali Erdem; Gürses, Veli Volkan; Kizar, Oktay; Ökmen, Mehmet Serif; Polatcan, Ismail; Gündogdu, Serhat Dogu

  Introduction: Taekwondo is a complex combat sport requiring high levels of strength, balance, reaction time, attention, agility, and endurance for effective performance under rapid offensive and defensive conditions. This study aimed to investigate the effects of an 8-week plyometric training program on static balance (SB), dynamic balance (DB), reaction time (RT), and attention (AT) in adolescent female taekwondo athletes. Methods: Twenty female athletes (age: 14.85 +/- 1.53 years; height: 162.27 +/- 7.12 cm; body mass: 56.69 +/- 6.45 kg) voluntarily participated in the study at Mardin Halit Demir Martial Arts Club. Participants were randomly assigned to either an experimental group (EG, n = 10) or a control group (CG, n = 10). The EG performed plyometric training twice weekly for 8 weeks in addition to regular taekwondo training, while the CG continued only taekwondo training. Static balance was defined as the primary outcome, whereas dynamic balance, reaction time, and attention were considered secondary outcomes. A 2 & times; 2 repeated-measures analysis of variance (group & times; time) was used to examine intervention effects. Results: Significant group & times; time interactions were observed for static balance and dynamic balance (p < 0.05), favoring the experimental group. However, no significant group & times; time interactions were found for reaction time or attention (p > 0.05). Discussion: These findings suggest that plyometric training may effectively improve balance performance in adolescent female taekwondo athletes, particularly static and dynamic balance. However, no significant effects were observed for reaction time or attention. Further studies with larger sample sizes are needed to clarify the potential effects of plyometric training on cognitive performance.

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• MakaleAçık Erişim2026/r/munzur/4719
  Analysis of buildings in Tunceli - Pülümür district with the Canadian seismic screening method

  Gundogdu, Yunus Emre; Polat, Berivan Yilmazer

  This study, which was conducted in the P & uuml;l & uuml;m & uuml;r district of Tunceli, was carried out in an area with high seismic risk due to the region's proximity to the Bing & ouml;l-Yedisu Fault. In the study, the earthquake safety of the existing building stock was assessed using visual inspection methods. In this context, 172 buildings in the P & uuml;l & uuml;m & uuml;r district of Tunceli province were examined in detail in terms of earthquake safety using the Canadian Seismic Screening Method. In the analysis, seismic safety levels of the buildings, structural and nonstructural risks were taken into consideration and seismic priority indexes (SPI) were determined. The results of the study revealed that a large portion of buildings in the P & uuml;l & uuml;m & uuml;r district carry different levels of risk of earthquake. Specifically, the evaluated building stock was entirely constructed before the critical year of 2007 and exhibits high seismic vulnerability. This critical threshold is technically attributed to two main regional factors: the design practices predating the 2007 Turkish Earthquake Code and the absence of ready-mixed concrete technology in Tunceli province prior to that year. Furthermore, based on the method's classification, it is suggested that buildings with a Seismic Priority Index (SPI) greater than 20, which indicates High to Very Hazardous risk levels, should be prioritized for detailed assessment and retrofitting, and that local governments should develop incentive policies for these mitigation efforts.

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• MakaleAçık Erişim2026/r/munzur/4658
  Mapping the Evolution of Interior Architecture and Interior Design: A VOSviewer-Based Bibliometric Analysis

  Ay, Ilhami; Dal, Murat; Bekler, Sema; Bekler, Baris

  This study conducts a comprehensive bibliometric analysis to explore the academic evolution of interior architecture and interior design literature from 1975 to 2024 using the Web of Science (WoS) database. A total of 3,695 articles were analyzed through VOSviewer software to visualize and interpret research trends, citation networks, co-authorship clusters, and thematic keyword occurrences. The findings indicate a steady growth in publications, particularly after 2006, coinciding with the increasing emphasis on digitalization and sustainability in design. Prominent research themes include biophilic design, adaptive reuse, and the psychological effects of color and space. The dominance of English-language publications is evident, though contributions in Turkish, French, and Spanish are also recognized. Citation analyses identify influential studies that link technical developments with social and psychological perspectives in design. Thematic clustering highlights the interdisciplinary expansion of the field, integrating insights from environmental psychology, ergonomics, and emerging digital technologies such as virtual and augmented reality. This study contributes to the literature by offering a clear roadmap for future research, promoting international collaboration, and strengthening the link between academic inquiry and design practice.

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