Recep Tayyip Erdoğan Üniversitesi Kurumsal Akademik Arşivi
DSpace@RTEÜ, Recep Tayyip Erdoğan 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.
Güncel Gönderiler
Human capital dynamics are the key to economic growth: source of value of the future
(Multidisciplinary Digital Publishing Institute (MDPI), 2025) Oltulular, Sabiha
Sustainable economic growth is possible not only with physical investments but also with strong human capital that enables the training of qualified, productive, and innovative individuals. The relationship between the number of university students (doctorate, master’s, and undergraduate) in higher education was selected as a proxy for human capital, and economic growth was estimated using vector autoregressive analysis with four models for the periods 1982Q1–2021Q4. In addition, the effect of gender was examined for all levels of education. While economic growth has a stable effect at the doctoral level, it positively affects master’s and undergraduate students. A one-unit shock in economic growth does not affect gender at doctoral, master’s, and undergraduate education levels. It was determined that the master’s degree explained the economic growth variable more than other education levels. It is seen that female students explain more at the doctoral level of education, and male students at the master’s and undergraduate levels of education. In sustainable economic growth and development, it is much more important and valuable to strengthen graduate education qualitatively and increase knowledge production capacity rather than simply increasing it. Education policies should focus on strengthening education, which is the building block of human capital that contributes to economic growth and social welfare.
Comparative analysis of retrobulbar blood flow in symmetric and asymmetric keratoconus patients
(Multidisciplinary Digital Publishing Institute (MDPI), 2025) Kısa, Fatma Huriye; Fındık, Hüseyin; Uzun, Feyzahan; Kaim, Muhammet; Solak, Merve; Aslan, Mehmet Gökhan
Background/Objectives: Keratoconus is a progressive corneal disorder characterized by thinning and conical protrusion of the cornea, resulting in visual impairment. This study aimed to evaluate retrobulbar blood flow characteristics in patients with symmetric and asymmetric keratoconus and to compare these parameters with those of healthy individuals. Methods: Participants aged 18–40 years were recruited and categorized into three groups: symmetric keratoconus, asymmetric keratoconus, and healthy controls. Color Doppler ultrasonography was used to measure the pulsatility index (PI) and resistive index (RI) of the ophthalmic artery (OA), central retinal artery (CRA), and posterior ciliary artery (PCA). Retrobulbar hemodynamic parameters were analyzed and compared across groups using appropriate statistical methods. Results: The ophthalmic artery PI (oaPI) and central retinal artery PI (craPI) were significantly elevated in both symmetric keratoconus patients and the affected eyes of asymmetric keratoconus patients compared to the control group (p < 0.05). In contrast, the oaPI in the unaffected eyes of asymmetric keratoconus patients was significantly lower than that of controls (p < 0.05). Conclusions: The elevated oaPI and craPI values observed in keratoconus patients suggest that the disease may involve not only corneal structural abnormalities but also alterations in ocular blood flow. These findings may imply a potential vascular component in keratoconus pathophysiology.
Evaluation of the quality and reliability of using YouTube as a patient information source for gonioscopy-assisted transluminal trabeculectomy: A cross-sectional study
(Lippincott Williams and Wilkins, 2025) Çelenk, Elvin Halili; Okutucu, Murat
This study aimed to evaluate the quality and reliability of YouTube videos related to gonioscopy-assisted transluminal trabeculectomy, particularly in terms of their suitability for patient information. On April 1, 2025, 2 independent ophthalmologists (E.H.Ç. and M.O.), working in different locations, conducted a YouTube search using the keywords "Gonioscopy-guided transluminal trabeculectomy for patients"and "GATT for patients."The search was performed through the official YouTube website (https://www.youtube.com). Videos shorter than 60 seconds, without audio, unrelated to the topic, duplicates, or with disabled comment sections were excluded. These exclusion criteria were predetermined. After applying the criteria, the remaining videos were evaluated by the researchers, and statistical analysis was performed by an independent researcher (E.H.Ç.). The parameters assessed included the number of views, likes, dislikes, comments, time since upload, video duration, view rate, like rate, Video Power Index, video source, and content. Video quality and reliability were assessed using M.DİSCERN, Journal of the American Medical Association (JAMA), and Global Quality Score (GQS) scoring systems. Out of 100 initially screened videos, 55 met the inclusion criteria. Of these, 39 were uploaded by physicians, 9 by health-related channels, and 6 by medical centers. Regarding content, 32 videos showed actual surgeries, 15 were physician-oriented educational content, and 8 aimed to inform patients about surgical treatment. The interobserver agreement was high, with no significant differences in scoring (M.DİSCERN, JAMA, GQS; P >.05; intraclass correlation coefficient = 0.894, 0.991, 0.914, respectively). The average M.DİSCERN score was 2.80 ± 1.13, JAMA score 2.96 ± 1.02, and GQS score 2.81 ± 1.07. The mean view rate was 280.58 ± 890.12, mean like rate 19.07 ± 32.19, and mean Video Power Index 350.26 ± 997.55. YouTube videos related to gonioscopy-assisted transluminal trabeculectomy surgery are of moderate quality in terms of patient information and reliability. Considering the growing popularity of this minimally invasive glaucoma surgery, more high-quality, accurate, and patient-oriented videos should be produced and shared on digital platforms to improve patient education.
Stalled repatriation of rohingya refugees: diplomatic hurdles, regional politics, and the path to sustainable solutions
(John Wiley and Sons Ltd, 2025) Ferdous, Jannatul; Atar, Emrah
The Rohingya people have sought refuge in Bangladesh following decades of ethnic and religious persecution in Myanmar. After the mass exodus in August 2017, Bangladesh launched emergency repatriation initiatives. In November 2017, Bangladesh and Myanmar reached a preliminary agreement on repatriation, despite widespread concerns from human rights organisations. This article examines the stalled repatriation of Rohingya refugees by analysing diplomatic challenges, regional geopolitical dynamics, and potential solutions. Using a qualitative approach and secondary sources, the study explores how geopolitical tensions, Myanmarʼs unwillingness to ensure safe returns, and security concerns have blocked progress. These factors have contributed to deteriorating conditions in the refugee camps, including overcrowding, increased crime, and a sharp decline in international aid. The ongoing crisis has exacerbated Bangladesh while economic and security burdens, while regional powers such as China and India continue to prioritise strategic interests over humanitarian responsibilities. Thus, the present study from a policy standpoint advocates for greater diplomatic pressure on Myanmar, stronger regional cooperation, and the development of a comprehensive refugee policy. Furthermore, empowering Rohingya refugees through education and economic opportunities can mitigate security risks while fostering sustainable repatriation models. Additionally, third-country resettlement and international burden-sharing must be prioritised to achieve long-term and dignified solutions.
A 499-line MATLAB implementation for frictional contact topology optimization
(Springer, 2025) Wang, Bin; Yaylacı, Murat; Bai, Jiantao; Zuo, Wenjie
Mechanical contact plays an important role in engineering structures. However, there are no open-source topology optimization codes to design contact structures. Therefore, this paper proposes a new contact topology optimization method using the surface-to-surface frictional contact algorithm. Meanwhile, the complete 499-line MATLAB codes and detailed interpretation are provided in this paper, which is easy to learn and use by junior researchers. The frictional surface-to-surface contact algorithm is briefly described, and the Coulomb friction law is used to model the friction behavior. A frictional contact topology optimization model is established with the compliance as objective function and volume fraction as constraint. The adjoint method is used to obtain the sensitivity of frictional contact problems. Numerical examples compare the effect of different friction coefficients. The proposed method successfully reduces the structural compliance considering the contact boundary, and the increase of friction coefficient is helpful to improve the stiffness of the optimized structures.
