DSpace Arşivi :: Ana Sayfa

İstanbul Gelişim Üniversitesi Kurumsal Açık Erişim Arşivi

DSpace@Gelişim, İstanbul Gelişim 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 yayınların etkisini artırmak için telif haklarına uygun olarak Açık Erişime sunar.

WoS Yayınları

Scopus Yayınları

TR-Dizin Yayınları

PubMed Yayınları

Makaleler

Kitaplar

Bildiriler

Tezler

Güncel Gönderiler

Comparative performance of AI chatbots in dental implantology: insights and limitations
(BioMed Central Ltd, 2026) Uçar, Sultan Merve; Gaş, Selin; Sasany, Rafat
Objective: This study critically evaluated the performance, accuracy, and clinical relevance of three large language models ChatGPT-4o, Claude 3.5, and Gemini 1.5 Pro when answering expert-generated questions on zygomatic implantology. The goal was to determine the extent to which such tools may function as educational or clinical decision supports in maxillofacial surgery. Methods: Thirty-eight standardized questions were developed by four oral and maxillofacial surgeons with advanced expertise in zygomatic implantology. Each model's responses were independently assessed by five calibrated clinical raters using validated metrics DISCERN, GQS, and a 5-point Accuracy Rubric to judge reliability, quality, and factual correctness. Non-parametric statistics (Kruskal-Wallis with Bonferroni post hoc correction; Spearman correlation) were used, and inter-rater reliability was quantified by ICC(2,1) = 0.86-0.91 (p < 0.001). Results: Gemini 1.5 Pro achieved slightly higher mean scores for response quality and accuracy, whereas Claude 3.5 and ChatGPT-4o performed comparably. However, absolute differences were modest (≤ 0.5 points on 5-point scales), indicating relative trends rather than decisive superiority. All models produced readable, clinically relevant content, though variability persisted in the depth and specificity of clinical guidance. Conclusion: Current AI language models exhibit moderate but inconsistent competency when addressing complex implantology scenarios. While Gemini 1.5 Pro scored marginally higher, these differences are unlikely to be of major practical consequence. Continuous validation, transparent reporting of model versions, and expert supervision remain essential before integrating such systems into routine dental education or clinical decision-making.
Is there a relationship between financial stability and macroeconomic variables? OECD example
(IGI Global, 2024) Savaş Çelik, Burcu
Financial stability has many determinants. These include various macroeconomic variables, the soundness and infrastructure of financial institutions, and the monetary policies pursued. This study aims to examine the relationship between financial stability and economic growth, interest rates, inflation rates, and interest rates of OECD member countries Z-score provides important information about the financial stability of a country's banking system by comparing its capital and returns and the volatility of returns. The study's data set consists of 15 OECD constituent countries. The data range of the study was determined as the period 2000 -2021. Panel data analysis is used in this study. Dumitrescu and Hurlin causality test results from gross domestic, inflation, and interest rate variables to the Z-score. Also, there is bi-causality from the Z-score to gross domestic, inflation, and interest rate variables.
Investigation of Nursing Postgraduate Theses with Randomised Controlled Experimental Design in the Field of Pediatric Intensive Care: A Retrospective Study
(Institute of Economic Development and Social Researches, 2024) Aslan, Meltem; Özer, Esra; Cengizli, Dilara; Nart, Aydın
The study was conducted between 1-31 July 2024 using descriptive survey and document analysis methods. Using the search option in the database of the National Thesis Centre of the Presidency of the Council of Higher Education, ‘children intensive care’ and Theses with the keyword ‘paediatric intensive care’ were searched. As a result of the screening, a total of 57 postgraduate theses were reached, and 53 theses were included in the examination, as 4 postgraduate theses were found to be common in the examination. A total of 8 master's theses that met the inclusion criteria were examined. The theses examined in the study were analysed in terms of variables such as measurement tools, field of care, title of thesis advisor and distribution of theses according to years. The analysis of the data was done with numbers and percentages using SPSS (Statistical Package for the Social Sciences) 25 package programme and Microsoft Office 2016 programme. As a result of the examination, it was determined that hygiene 37.5% (n=3), respiration 50% (n=4), nutrition 12.5% (n=1) according to the care areas of the theses. It was observed that the postgraduate nursing theses in the field of paediatric intensive care in Turkey were mostly effective in achieving their aims and their findings were compatible with the international literature. It is thought that the number of postgraduate nursing theses on the subject is not sufficient, and increasing the number of theses will shed light on other studies and researchers.
Brief skin cooling modulates the reflexes generated by whole‑body vibration
(Springer-Verlag, 2025) Kalaoğlu, Eser; Alayoğlu, Orhun; Sezikli, Selim; Atasoy, Mücahit; Türker, Kemal Sıtkı; Karacan, İlhan
Background: Whole-body vibration (WBV) is a popular exercise method known for its neuromuscular benefits, though the underlying mechanisms remain unclear. WBV activates distinct reflexes based on vibration amplitude and voluntary muscle activity: low-amplitude vibration or voluntary contraction typically triggers the tonic vibration reflex (TVR), whereas high-amplitude vibration or quiet standing activates the bone myoregulation reflex (BMR). Muscle spindles, which are sensitive to sympathetic input, may exhibit increased responsiveness to vibration during brief skin cooling. Objectives: This study investigated the reflex mechanisms activated by WBV during quiet standing and their modulation by skin cooling. Methods: Thirty healthy young adults participated. The latency of the soleus TVR, induced by Achilles tendon vibration, and the latency of the soleus BMR, induced by WBV, were measured. These assessments were repeated during the cold pressor test (CPT), involving left-hand immersion in cold water. Results: The soleus TVR latency was 36.2 ± 5.1 ms, while the soleus BMR latency was 40.4 ± 5.0 ms. During CPT, Achilles tendon vibration latency remained unchanged (36.2 ± 5.7 ms, p = 0.319). However, the WBV-induced reflex latency with CPT (36.0 ± 6.1 ms, p < 0.0001) was significantly shorter than the soleus BMR latency and aligned with the TVR latency (p = 0.711). Conclusion: WBV activates BMR in a quiet standing position, but with skin cooling, the TVR predominates, likely due to heightened spindle sensitivity. These findings offer valuable insights into developing targeted WBV programs.
Maximum Safety Limits of Laminectomy of the C1 Vertebra for Chiari Malformation Surgery: A Finite Element Analysis
(Springer Nature, 2023) Kayalar, Ali Erhan; Yaltırık, Cumhur Kaan; Kalyoncu, Enes; Bolat, Berna; Aşçıoğlu Temiztaş, Birgül; Etli, Mustafa Umut; Çalışaneller, Arif Tarkan; Naderi, Sait
Background: The treatment of Chiari malformations generally consists of posterior fossa decompression. C1 laminectomy is required in selected cases. However, cases of iatrogenic anterior arch fractures at C1 without high-energy trauma have been reported. Developing theoretical models of atlas C1 bones that have undergone a laminectomy can help researchers identify the regions where fractures may occur as a result of sudden loads. Methods: In this study, we created a detailed three-dimensional solid finite element model of the human atlas bone (C1) using geometric data. The loadings of the laminectomy dimension were evaluated on the basis of three groups. Group I comprised atlas bones that had not undergone a laminectomy. For Group II, the lateral border of the laminectomy was determined as the projection of the lateral mass medial border on the lamina. For Group III, the bilateral sulcus arteriosus was determined as the border for the lateral border of the laminectomy. The analysis results, which are in good agreement with those of previous reports, showed high concentrations of localized stress in the anterior and posterior arches of the atlas bone. Results: The analysis results showed that the stress increased in the laminectomy models. The maximum stress observed was consistent with the clinical observations of fracture sites in previous studies. Conclusion: In the treatment of patients with Chiari malformations, C1 laminectomy is often required. The width of this laminectomy can lead to iatrogenic anterior arch fractures. This is the first study to evaluate C1 laminectomy width using finite element modeling.