Extended Ego
Atçı, Dilek
The concept of the extended self, introduced by Belk (1988), seeks to understand how individuals incorporate material possessions and experiences into their personal identity. Rooted in William James’s work on the self, extended self-theory argues that individuals often engage in symbolic consumption to reflect certain social identities, aspirations, and values, and that by integrating these into the self, they expand the self. In this way, the objects and experiences one owns, as well as the people with whom one has close relationships, and their possessions and experiences, contribute to one’s self-concept. Tourists often seek experiences that align with their personal identities and aspirations, using travel artifacts as tangible symbols of their journey and self-concept. From exotic so...
Economic Growth in A Gender-Responsive Way: An Investigation for Country Groups Based on Human Development Index
Yeşilkaya, Fatma
The impact of gender norms on the national economy is an area that has been overlooked in extant literature. Since there has been a paucity of evaluation of gender and gender equality from an economic growth perspective, compared to the extensive literature on gender and gender equality, this study investigates gender-responsive economic growth within the regulation of the classification created within the scope of the human development index. The study analyses the linkage between human development and gender-related indices at four different levels of development. The relationship is analyzed using a panel data analysis method with data from 1995-2021. The study finds that the variables that increase economic growth in the four country groups are labor force participation rate and ...
Evaluation of phytochemical profiling, antioxidant and antimicrobial activities of Cionura erecta latex: the first report of the therapeutic potential of a natural exudate
DOĞAN ÇALHAN SELDA | EROĞLU PELİN | OKSUZ ZEHRA | ÇOBANOĞLU ECE | NEKÜK ÖZLEM
This study provides the first detailed evaluation of C. erecta latex, an uncharacterised exudate of the Apocynaceae family, focusing on its phytochemical composition and bioactivity. HPLC analysis revealed nine phenolic compounds, mainly sinapic acid (4876.2 µg/g), ferulic acid (902.6 µg/g), and epicatechin (386.5 µg/g). Although the total phenolic content was relatively low (2.27 ± 4.2 mg GAE/g), DPPH assay indicated moderate antioxidant activity (IC50 = 114 µg/mL), suggesting contributions from other bioactive constituents. Volatile profiling via HS-SPME-GC-MS and solvent-assisted GC–MS identified compounds such as p-cymene (14.05%), 2-hexanol (12.52%), and kaur-16-ene (72.06%). The latex exhibited antimicrobial activity against bacteria and yeasts, with MIC values ...
Mapping Urban Growth Through Landscape Expansion Index and Land Use Analysis: Evidence from Western Turkey
Gülsüm Ecem Demirdağ
This study investigates the dynamics of Land Use and Land Cover (LULC) changes along the İzmir-Denizli Highway corridor in western Turkey from 1984 to 2025, utilizing remote sensing techniques and the Landscape Expansion Index (LEI) to analyze urban growth patterns. Employing cloud-free Landsat satellite imagery and the Random Forest classification algorithm within Google Earth Engine, the research identifies and quantifies built-up area expansion over four decades. The findings reveal a significant increase in built-up areas, particularly after 2000, with a total expansion from 45682 hectares in 1984 to 68869 hectares in 2025. The analysis highlights a predominance of edge-expansion growth (71.3%), with outlying growth (27.4%) and minimal infilling growth (1.3%). This trend indicates a sh...
How do menstrual cycle and emotional expressions affect attentional and memory biases?
Doğan, Dilara
While sex differences and menstrual cycle effects in emotional processing and memory are well-documented, findings remain inconsistent. The present study aimed to investigate how emotional facial expressions influence attention and memory, and whether these effects vary across menstrual phases and between sexes. A total of 184 participants (Mage = 20.67, SD = 2.18) were tested, including men and women in five menstrual phases: early follicular (n = 30), late follicular (n = 30), ovulatory (n = 28), early luteal (n = 35), and late luteal (n = 28). Emotional attention was assessed using a flicker change detection task, and recognition memory was measured with a surprise yes/no recognition memory task. Results revealed a robust happiness superiority effect in the flicker task: Changes involvi...
Hydrazone-based chemosensors for the detection of environmentally and biologically relevant anions and neutral species: A critical review
Gul, Afroz | Nural, Yahya
Anions and neutral molecules are biologically important chemical species, and they have a wide range of applications in industrial, agricultural and pharmaceutical sectors. Exposure to certain anions and neutral species at levels above permissible limits results in environmental pollution and adverse effects on living organisms. Their practical, accurate, sensitive and, where possible, in situ detection necessitates the use of analytical tools such as chemosensors that are easy to design and operationally practical. Heteroatomic chemosensors are widely used because they can interact with anions and neutral compounds with high selectivity using different bonding modes. This review discusses the application of hydrazone-based chemosensors for the determination and identification of anions an...
FARKLI LİSE TÜRLERİNDE ÖĞRENİM GÖREN ÖĞRENCİLERİN MÜZİK PROFİLLERİNİN FARKLI DEĞİŞKENLERE GÖRE İNCELENMESİ (MERSİN İLİ ÖRNEĞİ)
Koca, Şehriban | Ortak, Sonay
Araştırma Mersin ilinde farklı lise türlerinde öğrenim gören öğrencilerin, müzik profillerinin çeşitli değişkenler ile incelenmesini amaçlamaktadır. Araştırmada nicel araştırma desenlerinden, farklı değişkenler arasındaki ilişkiyi ortaya koymayı amaçlayan ilişkisel tarama modeli kullanılmıştır. Araştırmada farklı lise kademesindeki öğrencilerin, müzik sanat etkinliklerini takip sıklıkları, müzik derslerinde dinledikleri müzikler, enstrüman veya ses eğitimi alma durumları, müzik beğenilerindeki etkenler ile değişkenler arasındaki ilişkiler belirlenmiştir. Araştırmanın örneklemi, Mersin ilinin 4 farklı merkez ilçelerinde (Akdeniz, Toroslar, Yenişehir ve Mezitli) bulunan, Millî Eğitim Bakanlığı (MEB), ortaöğretim (lise) kademesinin 5 farklı okul türünde öğrenim gören, tüm sınıf düzeylerini (9...
Heterogeneous electro-fenton treatment of clofibric acid with a Fe3O4 loaded bifunctional carbon felt cathode via different anode types
Gözmen, Belgin | Çirmi, Doğan
Pharmaceutical pollutants such as clofibric acid pose significant risks to aquatic environments and human health. In this study, a bifunctional cathode (CF@Fe3O4) was synthesized by anchoring Fe3O4 nanoparticles onto carbon felt via a solvothermal method. The material was characterized using scanning electron microscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. The CF@Fe3O4 cathode was then evaluated in a heterogeneous electro-Fenton system for clofibric acid degradation under varying pH and current conditions using platinum and boron doped diamond anodes. Using the CF@Fe3O4/Pt pair, the highest mineralization efficiency (82%) was achieved at pH 3 and 50 mA after 5 h, whereas higher current intensities resulted in decreased mineralization. In contrast, the CF@Fe3...
Carbon felt/CoFe2O4 cathode synthesis and use in the heterogeneous electro-Fenton process for vanillin oxidation
Gözmen, Belgin | Çirmi, Doğan
Synthetic vanillin is widely used in industries such as food and cosmetics, and it isalso produced as a by-product in various processes. This study was conductedto compare the degradation of vanillin using homogeneous and heterogeneouselectro-Fenton (EF) processes. Initially, electrocatalytic characterization was per-formed on a cathode material synthesized by solvothermal deposition of cobalt fer-rite (CoFe 2 O4 ) nanostructures onto a carbon felt (CF) substrate and compared withbare CF. Subsequently, the effectiveness of the CF@CoFe 2O 4 cathode material invanillin oxidation was compared at different pH values and currents with the hetero-geneous electro-Fenton process. The highest vanillin degradation and total organiccarbon (TOC) removal were achieved at pH 3. Following a 3 h heterogen...
Sustainable Digital Transformation in Music Education: An Analysis of Teacher Competencies in the Light of TPACK and International Frameworks
Koca, Şehriban | Kutlu, Atakan
The education systems, financial circumstances, and societal structures of our century expect educators to possess the most important characteristic: the ability to guide students who are highly digitally competent and keep themselves up to date. The “Sustainable Development Goals (SDG 4)” emphasized by the According to the United Nations highlight the necessity of continuously updating teacher competencies for quality and inclusive education. Establishing music teachers’ “digital competencies” on a sustainable basis depends on combining technical skills with a pedagogical vision. Therefore, thoroughly examining music teachers’ digital competencies in light of international standards and the TPAC model is critical to ensuring the sustainability of digital transformation at both the institu...
1,4-Naphthoquinone thiazole urea hybrids bearing morpholine/piperazine: synthesis, crystal structure, aldose reductase and α-glycosidase enzyme inhibition, molecular docking, and electrochemical interaction with dsDNA
Efeoglu, Cagla | Nural, Yahya
In this study, new 1,4-naphthoquinone thiazole urea hybrids bearing morpholine (3a-d) or piperazine (3e-h) moiety were synthesized in 76-89 % yields and characterized by 1H NMR, 13C NMR, FT-IR, HRMS, and elemental analysis. The stereochemistry of 3d was determined by single crystal x-ray diffraction study. We evaluated the inhibitory potential of these compounds 3a-h on aldose reductase (ALR2) and alpha-glycosidase enzyme (alpha-GLY) activity. Our results indicate that these compounds substantially inhibit ALR2 at micromolar doses, with inhibition constants (KIs) between 0.79 and 2.20 mu M and inhibit alpha-GLY KI between 0.67 and 2.82 mu M. Molecular docking simulations were utilized to elucidate inhibitory effects and establish structure-activity relationships for the synthesized compoun...
Tetracycline chemosensors: Materials, mechanisms, and applications
Gul, Afroz | Yabalak, Erdal | Nural, Yahya
Tetracyclines are well known for their diverse applications, including the treatment of various infections, the promotion of growth in poultry and cattle, and their use in animal husbandry. However, extended exposure to these antibiotics can lead to health problems and environmental pollution. This necessitates the development of time-saving and environmentally friendly devices, such as chemosensors, for their effective detection. This review provides a detailed account of the applications of the chemosensors as detection tools for tetracyclines, where metal-organic frameworks, metal coordination polymers and nanomaterials are considered as the main categories of these probes. The review highlights current research on the topic, shedding light on different types of chemosensors and their m...
On Semi Uniform Alpha Convergence and a Korovkin-Type Theorem
Erdem, Alper | Arpacıoğlu, Ali | Tunç, Tuncay
In this paper, we introduce the notion of semi uniform alpha convergence for sequences of functions between metric spaces. We also provide some results concerning the relationship between uniform exhaustiveness, semi uniform exhaustiveness and semi uniform alpha convergence. Finally, we give a Korovkin-type theorem related to uniform exhaustiveness.
Use of dental photography in pediatric dentistry practice
Sahin, Meryem
This study assesses how pediatric dentists currently use dental photography in clinical practice,including the frequency, reasons, challenges faced, coping strategies, equipment used, and to examinedifferences based on gender, institution, title, and experience. An online survey with 29 questions,created using Google Forms, was distributed to 195 specialists, research assistants, and academiciansin pediatric dentistry from January to June 2025. Pediatric dentists who volunteered and completedthe survey were included in the study. Results were analyzed with IBM SPSS Statistics Version 21.Dental photography was used in pediatric dentistry to a limited extent, especially in trauma cases,and more frequently in university hospitals. The main challenges were cooperation and anatomicallimitations...
Parental knowledge and consumption of probiotics: a cross-sectional study in a pediatric dentistry clinic in Turkey
Sahin, Meryem
Background: This study aimed to assess parental knowledge and consumption habits regarding probiotic products in a paediatric dentistry setting. Methods: A 23-item questionnaire was administered to 352 parents who visited the Mersin University Paediatric Dentistry Clinic between October 2023 and March 2024. Power analysis was conducted using the GPower 3.1 package program with a 95% confidence level, a medium effect size, and an 80% power value. Data were analysed using IBM SPSS Statistics V23. Results: Parental knowledge of probiotics increased significantly with educational level, with mothers demonstrating higher awareness than fathers (p < 0.001). Most parents identified probiotics as beneficial (p = 0.006), primarily for digestive and intestinal health, while many also recognized thei...
Psychological skills and their educational outcomes in adolescence: self-regulation, time management, and academic self-efficacy
GÖKALP, SERKAN
The primary objective of this study is to investigate the relationships between the fundamental psychological concepts that influence university students' academic self-efficacy. Specifically, the direct and indirect interactions between self-regulation, time management, and academic selfefficacy were analyzed using structural equation modeling. The study was conducted with a sample of 450 undergraduate students enrolled at a public university in Turkey utilizing a quantitative research design. Findings revealed that self-regulation was strongly associated with time management, which was in turn significantly related to academic selfefficacy. Furthermore, results indicated that self-regulation was directly and indirectly associated with academic self-efficacy through time man...