WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/20.500.14365/5
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Book Part Pastimes for the Child Breadwinners: the Sanitisation and Recreation Facilities of the Hereke Factory Campus(Edinburgh University Press, 2021) Velipasaoglu, Didem YavuzBook Part Jury Casting in Sing! China Validity of Group Celebrity Persona in the Study of Comradery Capital Across China(Bloomsbury Academic, 2025) Kitinur, Sevda KayaConference Object Design and Implementation of CP Antennas for Automotive and Radar Applications at 76.5 GHz(IEEE, 2025) Allam, A. M. M. A.; Mohamed, Moustafa S. A.; Ahmed, Basel; Alexan, Wassim; El-Damak, Dina; Fawzy, Diaa E.This paper presents an antenna designed for autonomous vehicles and MIMO radar systems. MIMO radar enhances detection and resolution by using multiple antennas. The research covers the design and performance evaluation of MIMO radar antennas, aiming to advance radar technology. The antenna is made on Rogers RO4003C (dielectric constant 3.55, thickness 0.203 mm) and operates at 76.5 GHz with single and multiple circularly polarized configurations. One antenna was fabricated, showing a strong correlation between simulated and measured reflection coefficients. Key parameters like the 2D radiation pattern, realized gain, and axial ratio are discussed. Circularly polarized (CP) antennas are favored for their advantages: orientation independence, reduced multi-path fading, and compatibility with linear polarization systems. The gain of the four-element CP antenna at 76.5 GHz reaches 8.23 dB as an array, intended for future MIMO radar applications to enhance field of view and angle resolution.Conference Object Fine Motor Impairment in Early-Phase Multiple Sclerosis Without Disability: A Comparison with Matched Healthy Controls(Sage Publications Ltd, 2025) Kahraman, Turhan; Unal, Gozde Deniz; Ertekin, Ozge; Ozakbas, SerkanConference Object Sex-Specific Challenges and Associated Factors in Upper Extremity Function in Persons with Multiple Sclerosis(Sage Publications Ltd, 2025) Kahraman, Turhan; Unal, Gozde Deniz; Ertekin, Ozge; Ozakbas, SerkanConference Object The Migraine Screen Questionnaire (ms-Q): A Valid Tool for Identifying Migraine in Persons with Multiple Sclerosis(Sage Publications Ltd, 2025) Alizada, Said; Caliskan, Can; Kahraman, Turhan; Ozakbas, SerkanConference Object Reliability and Validity of the Turkish Version of the Arm Function in Multiple Sclerosis Questionnaire (AMSQ)(Sage Publications Ltd, 2025) Kahraman, Turhan; Ertekin, Ozge; Aras, Mona; Ozdogar, Asiye Tuba; Kalkers, Nynke F.; Ozakbas, SerkanArticle Smartphone Screen Time and Eating Disorder Tendencies in Obese and Normal-Weight Adults: a Cross-Sectional Study From Turkey(BMC, 2026) Kehribar, Demet Yalcin; Baraz, Lale Saka; Taktuk, Selma; Gunduz, Sudenur; Mistik, Fatma Nur; Demircioglu, Baran; Ozgen, MetinObjective: This study aimed to investigate the relationships between smartphone screen time, eating disorder tendencies, and self-esteem in obese and normal-weight individuals, and to evaluate potential correlation patterns among these variables. Methods: A cross-sectional, comparative study was conducted with 130 participants (64 obese, 66 normal-weight) at Dokuz Eyl & uuml;l University Obesity and Healthy Life Outpatient Clinic. Anthropometric measurements were obtained, daily smartphone screen time was recorded from device settings, and participants completed the Eating Disorder Examination Questionnaire (EDE-Q-13) and Rosenberg Self-Esteem Scale (RSES). Data were analyzed using descriptive statistics, t-tests, chi-square tests, and correlation analyses. Results: Obese individuals demonstrated significantly higher daily smartphone screen time (6.4 +/- 1.8 vs. 5.5 +/- 1.5 h; p = 0.019) and greater eating disorder symptoms, including higher total EDE-Q-13 scores (24.3 +/- 6.9 vs. 18.7 +/- 5.8; p < 0.001), body dissatisfaction, and weight/shape concerns. No significant differences in self-esteem were observed between groups (p = 0.478). Correlation analyses revealed positive associations between body mass index (BMI) and body dissatisfaction (r = 0.537, p < 0.001) and between smartphone screen time and body dissatisfaction (r = 0.203, p = 0.021). Self-esteem was negatively correlated with body dissatisfaction (r = - 0.244, p = 0.006) and binge eating (r = - 0.229, p = 0.010), but not with smartphone screen time (p > 0.05). Conclusion: Obese individuals exhibited higher smartphone screen time and more pronounced eating disorder-related tendencies, particularly body dissatisfaction and weight concerns, compared to normal-weight individuals. However, self-esteem levels did not differ significantly between groups, suggesting that cultural and psychosocial factors may buffer self-esteem despite obesity. These findings highlight the importance of addressing digital media use and eating behaviors in obesity management and prevention strategies.Article The Prospects of Local Mobilisations Against Renewable Energy: the Aegean Case in Turkey(Routledge Journals, Taylor & Francis Ltd, 2026) Ozen, HayriyeThis study examines the prospects for local movements in confronting the environmental and social injustices of renewable energy production, often portrayed as vital for addressing climate, energy and capitalist crises. Focusing on mobilisations against geothermal projects in Turkey, where an increasingly authoritarian government exploits the legitimacy of renewable energy to consolidate power, it reveals that despite their rapid spread, local movements achieved only limited success in blocking specific projects. It demonstrates that, constrained by restricted political space and a lack of effective leadership, these movements failed to evolve into a unified political subjectivity capable of challenging broader geothermal policies and associated power relations.Article Uncertainty Assessment of the Impacts of Climate Change on Streamflow in the İznik Lake Watershed, Türkiye(MDPI, 2026) Tezel, Anil Caliskan; Akpinar, Adem; Bor, Asli; Elci, SebnemStudy region: This study focused on the Iznik Lake Watershed in northwestern T & uuml;rkiye. Study focus: Climate change is increasingly affecting water resources worldwide, raising concerns about future hydrological sustainability. This study investigates the impacts of climate change on river streamflow in the Iznik Lake Watershed, a critical freshwater resource in northwestern T & uuml;rkiye. To capture possible future conditions, downscaled climate projections were integrated with the SWAT+ hydrological model. Recognizing the inherent uncertainties in climate models and model parameterization, the analysis examined the relative influence of climate realizations, emission scenarios, and hydrological parameters on streamflow outputs. By quantifying both the magnitude of climate-induced changes and the contribution of different sources of uncertainty, the study provides insights that can guide decision-makers in future management planning and be useful for forthcoming modeling efforts. New hydrological insights for the region: Projections indicate wetter winters and springs but drier summers, with an overall warming trend in the study area. Based on simulations driven by four representative grid points, the results at the Karadere station, which represents the main inflow of the watershed, indicate modest changes in mean annual streamflow, ranging from -7% to +56% in the near future and from +19% to +54% in the far future. Maximum flows (Qmax) exhibit notable increases, ranging from +0.9% to +47% in the near future and from +21% to +63% in the far future, indicating a tendency toward higher peak discharges under future climate conditions. Low-flow conditions, especially in summer, exhibit the greatest relative variability due to near-zero baseline discharges. Relative change analysis revealed considerable differences in Karadere and Findicak sub-catchments, reflecting heterogeneous hydrological responses even within the same basin. Uncertainty analysis, conducted using both an ANOVA-based approach and Bayesian Model Averaging (BMA), highlighted the dominant influence of climate projections and potential evapotranspiration calculation methods, while land use change contributed negligibly to overall uncertainty.Article Real-World Survival Outcomes Following Metastasectomy in RAS Wild-Type MCRC: Insights From a Multicentre National Cohort Study(MDPI, 2026) Okten, Ilker Nihat; Baydas, Tuba; Yildirim, Mahmut Emre; Bilir, Cemil; Yalcin, Suayib; Cubukcu, Erdem; Karadurmus, NuriBackground: Metastasectomy is a cornerstone of multimodal management in metastatic colorectal cancer (mCRC), yet contemporary real-world data focusing specifically on RAS wild-type (RAS-WT) disease remain limited. We aimed to evaluate survival outcomes and prognostic factors associated with metastasectomy in patients with RAS-WT mCRC using a large national multicentre registry. Methods: This retrospective cohort study utilized data from the ONKO-KOLON T & uuml;rkiye registry. A total of 1079 patients with pathologically confirmed KRAS/NRAS wild-type mCRC were identified and categorized according to receipt of metastasectomy. Overall survival (OS) and progression-free survival (PFS) were estimated using the Kaplan-Meier method and compared with log-rank tests across multiple clinically relevant time origins, including metastatic diagnosis, initial colorectal cancer diagnosis, and time of metastasectomy. Prognostic factors within the metastasectomy cohort were assessed using univariate Cox proportional hazards models. Serum CEA and CA19-9 were analyzed after log10 transformation. Results: Among 1079 patients, 185 (17.1%) underwent metastasectomy. Patients receiving metastasectomy demonstrated significantly longer OS compared with those managed non-surgically when survival was calculated from the time of metastatic diagnosis (hazard ratio [HR] for death 0.36, 95% CI 0.27-0.47; p < 0.001), as well as improved PFS (HR for progression or death 0.39, 95% CI 0.30-0.52; p < 0.001). The survival advantage remained consistent when OS was measured from the time of initial colorectal cancer diagnosis (HR 0.37, 95% CI 0.25-0.50; p < 0.001). Median OS following metastasectomy was 43 months (95% CI 31.4-45.6). In univariate analyses within the metastasectomy cohort, higher baseline CA19-9 levels were significantly associated with inferior OS when analyzed both as a continuous variable (per log10 increase; HR 1.81, 95% CI 1.20-2.75; p = 0.005) and as a categorical variable (above vs. below threshold; HR 0.37, 95% CI 0.16-0.86; p = 0.021). Other clinicopathologic factors, including age, CEA, tumor sidedness, grade, MSI status, and metastatic burden, were not significantly associated with survival. Conclusions: In this large, real-world national cohort of RAS-WT mCRC, metastasectomy was strongly associated with prolonged survival across multiple clinically relevant time frames. Within surgically treated patients, baseline CA19-9 emerged as the most informative prognostic marker, while traditional clinicopathologic variables showed limited discriminatory value. These findings highlight the importance of careful patient selection and support further prospective studies integrating molecular and biomarker-based strategies to refine prognostication and optimize surgical decision-making in RAS-WT mCRC.Article Prognostic Value of the Ratio of Globally Sclerotic Glomeruli in Patients With Idiopathic IgA Nephropathy(Nature Portfolio, 2026) Kazan, Sinan; Ozturk, Savas; Uzerk Kibar, Muge; Ozcan, Seyda Gul; Alcelik Karacan, Raife Dilhan; Eren, Necmi; Tunca, OnurIgA nephropathy (IgAN) is the most common primary glomerulonephritis worldwide. We assessed whether the Ratio of Globally Sclerotic Glomeruli (RoGSG) on diagnostic biopsy predicts subsequent kidney outcomes in a nationwide, multi-center registry. Among 326 adults with idiopathic IgAN (mean age 39.1 +/- 12.8 years; 60.1% male), 43 patients (13.2%) met a 5 year composite outcome defined as any of: doubling of serum creatinine or >= 50% decline in eGFR from baseline, eGFR < 15 mL/min/1.73 m(2), or initiation of kidney replacement therapy. Receiver operating characteristic analysis identified a RoGSG cutoff of 28.86% for predicting the composite outcome (AUC 0.917, 95% CI 0.885-0.949; sensitivity 93.0%; specificity 84.5%). Using this threshold, 47.6% of patients with RoGSG >= 28.86% versus 1.2% with RoGSG < 28.86% reached the composite outcome. In multivariable models adjusted for clinical and pathologic covariates, high RoGSG, grade 2 tubular atrophy/interstitial fibrosis, and non-response to initial immunosuppression were independent predictors of adverse outcomes. The prognostic association of RoGSG persisted in key subgroups, including those with nephrotic syndrome and those with initial treatment response. These findings support RoGSG as a readily available histopathologic marker that may improve risk stratification in IgAN; however, prospective studies and external validation in independent cohorts are required before any clinical adoption.Article Optimal Purchasing and Production Control for a Circular Production System(Taylor & Francis Inc, 2026) Song, Yun-Lei; Frigerio, Nicla; Karabag, Oktay; Wang, Jun-Qiang; Tan, BarisThe paper investigates the optimal purchasing and production control policy within a circular production system that processes two returned material types through a shared manufacturing center. Materials are purchased or rejected upon arrival, with differences in procurement cost. At each decision epoch, the system must decide whether to purchase incoming materials and which type to prioritize for production. The problem is formulated as a Markov decision process, and a linear programming approach is developed to compute the optimal purchasing and production policy for the system under both non-preemption and preemption rules. Theoretically, the structure of the optimal policy is analytically characterized under the preemption rule in the case of equal production rates. Numerical experiments reveal that this policy remains optimal or near-optimal for the system under non-preemption and preemption rules with varying production rates. Additionally, comparisons of the optimal policies between non-preemption and preemption rules demonstrate that the system under the preemption rule yields higher average reward than that under the non-preemption rule, to varying degrees depending on system parameters, such as production rate, holding cost, and arrival rate.Article Validation of a Multiplex Qrt-PCR Assay for the Detection of RSV, Influenza A/B Virus and SARS-CoV(BMC, 2026) Bulgurcu, Alihan; Sayiner, Ayca ArzuThe significant burden of viral respiratory diseases necessitates rapid detection of key pathogens. Simultaneous testing for SARS-CoV-2, RSV, and influenza A/B as an initial step, followed by broader panels as needed, offers a cost-effective diagnostic strategy. This study aimed to validate a new commercial multiplex qRT-PCR assay (Diagnovital (R) RTA Laboratories, Turkey) for the simultaneous detection of these viruses. Analytical sensitivity was determined using Probit regression analysis on serial dilutions (10(5)-10(1) copies/ml) for each target virus. Specificity was evaluated with 120 negative samples and 32 positive samples for non-target respiratory viruses. External quality control panels and clinical specimens positive for RSV (n = 39), influenza A/B (n = 71), SARS-CoV-2 (n = 64) were used for accuracy testing. Intra- and inter-assay precision were analyzed using samples near the limit of detection. The performance was compared to routine diagnostic tests. The assay's analytical sensitivity was 420.7, 296.7, 368.6, 1362.6, and 1459.7 copies/ml for SARS-CoV-2 Alpha and Omicron variants, influenza A, influenza B, and RSV, respectively. Analytical specificity was 100%, and precision showed CV% < 5. Detection rates for SARS-CoV-2, influenza A, influenza B, and RSV were 100%, 95.1%, 97.5%, and 94.8%, respectively, with false negatives occurring in samples with Ct > 33. Comparative analysis showed high correlations between assays, with strong agreement (Cohen's kappa ranging from 0.861 to 1). These findings demonstrate the clinical applicability of the Diagnovital (R) assay, though false negatives may occur in low-concentration samples.Article Turkish Medical Students' Perspectives on the Advantages and Disadvantages of Telemedicine: Scale Development and Psychometric Evaluation(BMC, 2026) Aydin, Mevlut Okan; Alper, Zuleyha; Ozkaya, Guven; Caliskan, Suleyman AyhanBackground The rise of digital technology and the COVID-19 pandemic have accelerated the adoption of telemedicine, yet its integration into medical education remains limited. Understanding the perceptions of future physicians is vital for the sustainable implementation of these services and for developing evidence-based telemedicine training programs. This study aims to assess the awareness and perception of telemedicine among medical students in T & uuml;rkiye and provide empirical evidence to inform curriculum development. Methods This nationwide survey included 810 medical students from six universities in T & uuml;rkiye. A valid and reliable 19-item questionnaire was developed to measure participants' perceptions of telemedicine. The questionnaire used a 5-choice Likert-type scale. The data were analyzed using exploratory and confirmatory factor analysis to determine the scale's validity and reliability. Results The final 11-item scale demonstrated strong validity and reliability, with a two-factor structure: "Advantages of Telemedicine" and "Disadvantages of Telemedicine." The results showed that students largely perceive telemedicine as beneficial, particularly for preventive health services. However, they also expressed concerns, with the highest-rated disadvantage being that telemedicine might create a distance between the doctor and patient. The students rated "increased health inequalities" as the lowest concern. These findings reveal specific competency gaps and training needs that should be addressed in medical curricula. Conclusion The findings suggest that medical students in T & uuml;rkiye hold a generally positive view of telemedicine, recognizing its potential advantages in healthcare. While they are aware of some ethical concerns, such as the potential for a distant doctor-patient relationship, they see telemedicine as a tool to reduce health inequalities. This validated scale provides a foundation for designing targeted telemedicine training programs, assessing educational outcomes, and identifying specific competencies that require emphasis in medical school curricula. We propose a competency-based framework and specific pedagogical approaches to prepare future physicians for effective telemedicine practice.Article Stereotactic Radiosurgery-Induced Peritumoral Edema in Asymptomatic Convexity, Parasagittal, and Parafalcine Meningiomas(Turkish Neurosurgical Soc, 2026) Can, Osman Burak; Ruksen, Mete; Isman, Burcu Durmak; Askeroglu, Mehmet Orbay; Zorlu, Seray; Yuksel, Alper; Akay, AliAIM: To evaluate the incidence and identify the risk factors of stereotactic radiosurgery (SRS)-induced peritumoral edema (PTE) in the asymptomatic convexity, parasagittal, and parafalcine meningiomas without pre-existing PTE. MATERIAL and METHODS: We retrospectively analyzed 52 patients with asymptomatic convexity, parasagittal, or parafalcine meningiomas without pre-existing PTE who underwent single-fraction Gamma Knife radiosurgery between 2019 and 2024. The median tumor volume and the maximum tumor diameter were 3.3 cc (range: 0.31-10.2 cc) and 2.0 cm (range: 0.98-3.1 cm), respectively. The median margin dose was 12 Gy (range: 11 Gy-13 Gy). The median radiological and clinical follow-up durations were 21 months (range: 6-65 months) and 26 months (range: 12-66 months), respectively. RESULTS: SRS-induced PTE occurred in 5.8% of patients (n=3), exclusively in elderly individuals (>= 65 years) with parasagittal or parafalcine meningiomas. No cases were observed in convexity meningiomas (0/24). Multivariable analysis revealed a trend toward statistical significance for the association between age and SRS-induced PTE (p=0.074). In the overall cohort, the incidence of SRS-induced PTE was significantly higher in elderly patients compared to younger patients (<65 years) (3/14 vs. 0/38, p=0.016), and this difference remained significant within the parasagittal/parafalcine subgroup (3/7 vs. 0/21, p=0.011).
CONCLUSION: SRS appears to be a safe treatment modality in terms of PTE risk in patients aged below 65 years with asymptomatic convexity, parasagittal, or parafalcine meningiomas without pre-existing PTE. In contrast, elderly patients with parasagittal or parafalcine meningiomas may be more susceptible to SRS-induced PTE, thereby warranting a more cautious approach to SRS in this subgroup. Additional studies involving larger cohorts are warranted to validate these findings.Article Turkish Thoracic Society Declaration on Peace and Health the Importance of Breathing in a World Without Ware(Galenos Publ House, 2026) Cetinkaya, Pelin Duru; Toreyin, Zehra Nur; Ozdemir, Hande Yuce; Yasin, Yesim; Kilinc, Oguz; Yorgancioglu, Arzu; Begic, ErencanWar legitimizes the right to kill for its participants, equating victory with moral justification, however, this perceived legitimacy is largely Constructed on the deaths of civilians and other living beings. Medicine, by its very nature, is grounded in the principles of preserving ife, doing no harm, and adhering to scientific and ethical standards, and is therefore fundamentally opposed to the philosophy of war. Wars lead, directly and indirectly, to desaths, disability, displacement, poverty, and long-term public health disasters. Attacks on health Facilities, restrictions on access to food and water, environmental destruction, and air pollution disproportionately affect vulnerable Dopulations, particularly women and children. The psychological consequences of war often evolve into persistent neuropsychiatric conditions, including post-traumatic stress disorder, depression, and moral injury. Peace is not merely the absence of war, it is a prerequisite for health, environmental sustainability, and social well-being. The concept of positive peace strengthens health indicators hrough well-functioning institutions, equitable resource distribution, and the protection of human rights. Within this framework, health professionals and civil society organizations are critical actors in advocating for peace and in making human rights violations visible The Turkish Thoracic Society regards peace as an indispensable condition for public and respiratory health, affirms its opposition to all wars particularly the ongoing atrocities in Gaza-and reaffirms its commitment to sustained, health-based advocacy for peace,Letter The Necessity of Bronchiectasis Registries - The Turkish Registry of Bronchiectasis(Galenos Publ House, 2026) Kizilirmak, Deniz; Martinez-Garcia, Miguel Angel; Cicek, Sedat; Coskun, Aysin Sakar; Kilinc, Oguz; Edis, Ebru CakirArticle The Effect of Platelet-Rich Plasma on Midpalatal Suture in Rapid Maxillary Expansion: an Experimental Study(Scientific Scholar LLC, 2026) Mutaf, Hasan Ilhan; Bicakci, Ali Altug; Gumus, Cesur; Inan, Vissun SevincObjectives: Our study aims to examine, histologically and radiologically, the effects of platelet-rich plasma (PRP) applied locally into the midpalatal suture on bone formation during and after rapid maxillary expansion (RME) in rabbits. Material and Methods: A total of 24 healthy male New Zealand rabbits were randomly divided into three groups. All animals were subjected to 7-day maxillary expansion and 14-day retention. In the control group, physiological saline was injected into the midpalatal suture on the 1stday of the retention. Group I received a PRP injection only 1 time just before retention. In group II, the PRP injection was given twice, once 24 h after the start of the expansion and once on the 1stday of the retention. Radiographs were taken before and after the expansion and retention to assess the suture's new bone density. All subjects in three groups were evaluated and compared histologically at the end of retention. Results: A decrease in bone density after expansion and an increase in bone density after retention were seen in all groups. The decrease in bone density after expansion was the least in Group II, and the highest increase in bone density after retention was again in Group II. Inflammation, capillary dilatation, cell infiltration, osteoblastic activity, osteoclastic activity, bone morphogenetic protein-4, and transforming growth factor-beta scores of Group II were significantly higher than the control group. Conclusion: Locally applied PRP during and after RME may contribute to bone formation in the midpalatalArticle Smartphone Addiction and Health Promotion Lifestyle in University Students: A Cross-Sectional Analytical Study(Cambridge University Press, 2026) Serim, Yasin; Limnili, Gizem; Gokdemir, Ozden; Ozcakar, NilgunObjectives: Smartphones have become essential, making our daily lives more manageable; however, excessive use may cause problems. University students are particularly vulnerable to smartphone addiction. This study examines the relationship between smartphone addiction and health-promoting lifestyles among university students. Methods: A cross-sectional study was conducted with 911 students at Dokuz Eylul University, Izmir, Turkey. Data were collected via Smartphone Addiction Scale-Short Version (SAS-SV) and Health Promotion Lifestyle Profile II (HPLP II). The printed forms were used, and the researcher administered the survey in person and recorded the responses. Results: Prevalence of smartphone addiction was 34.1%. Several factors were significantly associated, including female gender (p = 0.049), being single (p = 0.042), self-perceived smartphone addiction (p < 0.001), daytime sleepiness (p < 0.001), and poor sleep quality (p < 0.001). Students with smartphone addiction had significantly lower HPLP II scores (p = 0.001). Logistic regression analysis showed that gender was no longer a significant factor. Those without a partner (OR: 1.47, 95% CI: 1.07-2.03), those who considered themselves smartphone addicts (OR: 6.86, 95% CI: 4.99-9.42), and those with daytime sleepiness (OR: 1.52, 95% CI: 1.08-2.14) had higher odds of smartphone addiction. Higher HPLP II scores were protective against smartphone addiction (OR: 0.99, 95% CI: 0.98-0.99). Conclusions: This study highlights that students with smartphone addiction engage in less health-promoting behaviours and experience poor sleep quality and daytime sleepiness. Self-perceived smartphone addiction was strongly associated with actual addiction, while a healthier lifestyle appeared to have a protective effect. There is a need for strategies to promote healthy habits and reduce smartphone addiction among university students.
