Aksaray Üniversitesi Kurumsal Akademik Arşivi
DSpace@Aksaray, Aksaray Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Integration of bluetooth technology and artificial neural networks in high accuracy indoor positioning
(IGI Global, 2025) Coşgun, Atıl Emre
Nowadays, with the increasing digitalization and widespread use of Internet of Things (IoT) applications, accurate and reliable indoor positioning system applications have become increasingly important. With the increasing need in the areas of use, researchers have proposed various indoor positioning system technologies and methods. In this context, Bluetooth Low Energy (BLE) technology offers a cost-effective, energy-efficient, and easy-to-integrate solution within existing infrastructures. The integration of BLE technology and ANNs for indoor positioning will be the subject of this section, which will cover the theoretical basis and practical applications. A comprehensive review of BLE-based positioning algorithms, performance evaluations, and the design and training of ANN models will be presented. In addition, the limitations of existing systems will be highlighted through the examination of the challenges. The aim of this study is to make a meaningful contribution to the field of indoor positioning and to provide applicable solutions in both academic and industrial environments.
A portfolio-focused behavioral model linking financial literacy and risk tolerance: evidence from mutual fund investors in Türkiye
(Borsa Istanbul Anonim Sirketi, 2025) Hamurcu, Çağrı; Hazar, Adalet; Babuşcu, Şenol
This study develops a portfolio-focused behavioral model to investigate how the multidimensional components of financial literacy—knowledge, attitude, and behavior—shape financial risk tolerance among mutual fund investors in Türkiye. Whereas most papers evaluate the influence of financial literacy on investment decisions using broad investor samples, this study centers on individuals who make professionally managed, portfolio-based investment decisions, thereby making a contribution to the literature. Mutual fund investors typically have higher financial awareness and structured decision-making processes, enabling a more nuanced analysis of the impact of financial literacy dimensions on risk tolerance. Drawing on behavioral finance, financial capability theory, and the theory of planned behavior, the model traces direct and indirect paths from literacy components to risk preferences. Based on data from 703 Turkish mutual fund investors and using validated Organization for Economic Cooperation and Development (OECD)/International Network on Financial Education (INFE) and Grable-Lytton scales, our structural equation model (SEM) reveals that financial behavior is the primary driver of risk tolerance, mediating the influence of knowledge and attitudes. These findings emphasize that financial literacy translates into risk-related decision-making primarily through behavior. The study highlights the behavioral dynamics of financial capability in emerging markets and calls for financial education programs that go beyond knowledge transfer to cultivate actionable attitudes and proactive behaviors among informed investors.
Can financial literacy training improve financially responsible behavior? experimental evidence from turkish undergraduates
(Borsa Istanbul Anonim Sirketi, 2025) İlbasmış, Metin; Altın, Hakan; Yılmaz, Büşra
This study examines the causal impact of financial literacy education on financially responsible behavior using a quasi-experimental design among 125 undergraduate students in Türkiye. The study compares outcomes between a treatment group that received structured financial literacy training and a control group that did not. The results show that even a brief educational intervention significantly enhances objective financial literacy and leads to more prudent financial behaviors, including budgeting, saving, purchasing insurance, and investment planning. By addressing endogeneity concerns and targeting individuals at a critical decision-making stage of life, this study provides empirical evidence of the effectiveness of financial education, offering valuable insights for policy development in emerging market contexts.
Environmental variation in the bioclimatic niche, hibernation patterns, and body size of anatolian ground squirrels
(Springer Nature, 2025) Kart Gür, Mutlu; Kankılıç, Tolga; Gür, Hakan
Environmental variation in phenotypic traits offers key insights into how organisms adapt to diverse environmental conditions. In this study, we studied how diverse environmental conditions shape environmental variation in the bioclimatic niche, hibernation patterns, and body size of Anatolian ground squirrels (Spermophilus xanthoprymnus). Specifically, we used presence data from across the species’ range, body temperature data from 51 free-living individuals in two natural populations located 880 km apart, and body size data from 167 individuals across 10 populations to explore environmental variation in bioclimatic niche, hibernation patterns, and body size across elevational and associated climatic gradients. Our results indicate that the bioclimatic niches of two deeply divergent mitochondrial (mt)DNA lineages (i.e., the western and eastern lineages) are not equivalent. However, this pattern appears to result from the underlying bioclimatic differences between the regions the western and eastern lineages inhabit. Anatolian ground squirrels from the eastern population, which inhabits a higher-elevation, colder, wetter, and more seasonally variable environment, exhibit longer hibernation periods, spend a higher proportion of this period in torpor bouts, and achieve deeper reductions in body temperature than conspecifics from the western population. Additionally, adult males exhibit shorter hibernation periods and spend a smaller proportion of this period in torpor bouts than the other age-sex classes. Anatolian ground squirrels from the eastern lineage, which inhabits areas at higher elevations with colder, wetter, and more seasonally variable environments, are morphologically larger than conspecifics from the western lineage, particularly among males. Overall, our results demonstrate that elevational and climatic gradients shape phenotypic variation in Anatolian ground squirrels through lineage-, population- and demographic-level responses. By integrating bioclimatic niche, hibernation patterns, and body size, this study highlights the importance of combining multiple trait dimensions to improve our understanding of eco-evolutionary divergence in hibernating mammals.
Protective role of chrysin in sodium valproate-induced kidney injury: modulation of stress response pathways, toxicity pathways and inflammation
(Springer International Publishing, 2025) Genç, Murat; Mutlu, Hüseyin; Akaras, Nurhan; Şimşek, Hasan; Kandemir, Özge; Yazıcı, Ramiz; Kandemir, Fatih Mehmet
Sodium valproate (SVP) is a broad-spectrum antiepileptic commonly used in the treatment of numerous psychiatric disorders, notably epilepsy. Despite its therapeutic benefits, SVP has been known to cause undesirable side effects in multiple organs, particularly the kidneys. Chrysin (CHR), a natural flavonoid, is notable for its flavonoid properties which include phytotherapeutic, pharmacological, biological and aromatic characteristics; it possesses a protective capacity against organ damage due to its antioxidant, anti-inflammatory and antiapoptotic actions. The study examined the potential protective effects of CHR against SVP-induced renal damage and sought to elucidate the molecular mechanisms underlying these effects. In the study, 35 Wistar-Albino rats were used and the animals were randomly divided into five groups: Control, CHR (50 mg/kg), SVP (500 mg/kg), SVP + CHR25 (SVP + 25 mg/kg CHR) and SVP + CHR50 (SVP + 50 mg/kg CHR). All treatments were administered orally for 14 days. Blood and kidney tissue samples obtained at the end of the experiment were evaluated for biochemical, molecular, histological and immunohistochemical parameters related to oxidative stress, inflammation, apoptosis and autophagy. The findings revealed that SVP administration triggered oxidative stress (increase in MDA level) and inflammation (NF-κB, TNF-α, IL-1β expression) processes and negatively affected apoptosis-related protein levels (Caspase-3, Bax increase and Bcl-2 decrease). CHR treatment significantly improved these parameters. In addition, CHR suppressed oxidative stress by increasing the mRNA expression of NRF-2, HO-1 and NQO1 genes that regulate antioxidant defense and showed regulatory effects on the JAK2/STAT3, Wnt3/DVL-2/Cyclin D1 and Notch1/HES1 signaling pathways. Histologically, H&E staining showed that CHR administration preserved the architecture of the kidney tissue. In conclusion, the findings suggest that CHR significantly attenuates SVP-induced renal injury by reducing oxidative stress, inflammation, apoptosis and cellular degeneration. In accordance with these data, CHR may be considered as a potential protective agent against SVP-induced nephrotoxicity.
