Fakülteler
Permanent URI for this community
Browse
Browsing Fakülteler by Access Type "info:eu-repo/semantics/closedAccess"
Now showing 1 - 13 of 13
Results Per Page
Sort Options
- ItemA theoretical and experimental investigation using a multi-criteria decision-making approach to investigate the use of oak cupule biomass as a sustainable corrosion inhibitor for mild steel in acidic solution(Elsevier, 2025-08) Şişmanoğlu, Sedef; Mert, Mehmet Erman; Doğru Mert, Başak; Abdulvahitoğlu, Adnan; 382420This study investigates adsorption mechanism and inhibition efficiency of oak cupule (OC) biomass on mild steel (MS) corrosion in an acidic medium through quantum chemical calculations and electrochemical analysis. The chemical composition of OC was characterized using FTIR-ATR, mass spectrometry, and UV–Vis spectroscopy. Electrochemical impedance spectroscopy was conducted at varying inhibitor concentrations, complemented by surface morphology analysis via SEM and contact angle measurements after 168 h of immersion. At 250 ppm, the inhibition efficiency reached 92.5 %, attributed to the presence of tannins and polyphenolic compounds. Adsorption followed the Langmuir isotherm, with an equilibrium constant of 2.36 L mg−1 and a Gibbs free energy change of −12.08 kJ mol−1. Contact angle measurements indicated increased hydrophobicity due to the formation of protective layer. Potential of zero charge (PZC) analysis confirmed electrostatic interactions between OC molecules and the positively charged MS surface in 0.5 M HCl. Molecular insights were obtained using Density Functional Theory (DFT) with the B3LYP/6–311++G(d,p) method, revealing electronic properties such as frontier molecular orbital energies, energy gap and atomic charges. The optimum result was determined by analyzing the experimental findings at different inhibitor concentrations and different durations using Multi Criteria Decision Making (MCDM) methods. It was found that scenario S5 provided the optimum result.
- ItemAn examination of the psychological resilience of preschool children with and without Montessori education(Wiley, 2024-08) Sezgin, Elif; Şener, Tülay; 157389This study aims to compare the psychological resilience of children who receive Montessori education with those who do not receive Montessori education(the group attends a school where education is provided according to the Preschool Education Programme of the Ministry of National Education). The study used the Relational Scanning Model Comparison Types to compare the psychological resilience of children who received Montessori education with those who did not. The research involved 99 children aged 3–6 years who received regular preschool and Montessori education during the 2021–2022 academic year. It is reported that no developmental or neurological defects were observed in any of the participants. The study group comprised 50 children aged 3–6 years from a private kindergarten affiliated with National Education in Nilüfer district and 49 children aged 3–6 years from a private Montessori kindergarten in Nilüfer district. According to the study, children who received Montessori education demonstrated comparatively higher levels of psychological resilience than those who did not receive Montessori education. It has been observed that there exists a weak but meaningful correlation between the psychological resilience of children and their social relationships/social performance, particularly in those who have received Montessori education for an extended duration. As a result, it can be inferred that Montessori education positively impacts children's psychological resilience.
- ItemEnhancing municipal solid waste management efficiency through clustering: a case study(Taylor and Francis, 2024-11) Çil, Sedat; Karaer, Feza; Salihoğlu, N. Kamil; Tabansız Göç, Gülveren; Çavdur, Fatih; 409903This study leverages real-time datasets generated through IoT technology and smart city applications to enhance solid waste management in Yalova Province, Turkey. By integrating these datasets with the municipality’s Geographic Information System (GIS) using the ITRF/96 3 UTM X Y Coordinate System, a dynamic waste collection framework was established. The K-Means clustering algorithm was employed to determine the optimal waste container placement, considering capacities of 550, 800, 1,000, and 3,000 liters and walking distances of 50–100 ms. Results indicated that 1,000 and 3,000-liter containers with a 100-m walking distance maximized collection efficiency. Replacing 484 traditional containers with 105 units of 3,000 liters reduced total routes by 34%, transport costs by 42.2%, and CO2 emissions by 33.5%. The study underscores the importance of integrating GIS and IoT technologies for real-time waste management, aligning with the UN’s Sustainable Development Goals (SDG 11 and SDG 13). By combining data-driven decision-making with urban sustainability practices, it offers a replicable model for municipalities seeking to reduce costs and environmental impacts in waste collection.
- ItemEvaluating Environmental Performance in the Turkish Cement Industry(Springer, 2025-04) Yıldız, Hakan; Şengül, Serkan; Köprücü, Yılmaz; 355807; Tsounis, Nicholas; Vlachvei, AspasiaThe purpose of this study is to investigate the environmental performance of the Turkish cement industry. Employing the data set of 8 firms operating in the cement industry and using Data Envelopment Analysis, we estimate the CO2 efficiency in the industry. The empirical findings suggest that the average carbon efficiency in the sector is approximately 71%, indicating substantial room for efficiency enhancement through innovative production techniques and alternative fueluse. However, asignificant reduction intechnical efficiency hasbeen observable over the years. Promoting sustainable practices and investing in technological advancements can reverse this trend. Also, such policies can reduce the industry’s carbon footprint, thus it may be possible to combat greenhouse gas emissions and achieve the targets set in this regard.
- ItemFrom capture to culture: the asymmetric impact of education on Türkiye's fisheries sector(Springer, 2025-08) Canbay, Şerif; Şengül, Serkan; Karahan Dursun, Pınar; 355807; 414023The aim of this study is to analyze the causal effect of the net schooling rate, as a proxy for human capital, on saltwater fisheries and aquaculture in five coastal regions of T & uuml;rkiye (Marmara, Aegean, Mediterranean, Western Black Sea, and Eastern Black Sea). In the empirical analysis, we use the panel data for the period 2009-2022 and employ the dependent variables that are the amount of fish production obtained through fishing in Model 1 and the amount of fish produced through aquaculture in Model 2. The study applies the panel bootstrap Granger causality method, considering both structural heterogeneities and cross-sectional dependencies. The results show that the effect of educational attainment on fish production activities varies both by type of production and by regional conditions. In the Mediterranean and Aegean regions, educational attainment has strong effects on both fishing and aquaculture, while in some regions, it has a negative effect on production. The study contributes to the literature by presenting the effects of education, a socio-economic variable, at the sectoral level in detail; it also provides an empirical basis for the development of region-specific sustainability policies.
- ItemHibrit Savaş ve Kıbrıs Barış Harekâtında Jandarma Birlikleri: Askeri Harekâtlarda Jandarma Birliklerinin Kullanımının Çok Kriterli Karar Verme Yöntemleri ile Analizi(Hiperyayın, 2024) Abdulvahitoğlu, Adnan; 382420; Peler, Yükselen; Akçam, Zeki; Savrun, Ergenekonİnsanlık tarihinin varoluşundan bu yana Avrupa, Asya ve Avrupa kıtalarının ortasında önemli bir jeostratejik konuma sahip olan Kıbrıs adası tüm medeniyetlerin ilgi duyduğu bir yer olmuştur. Süveyş Kanalı, Cebelitarık Boğazı ile İstanbul ve Çanakkale Boğazlarından geçen suyollarının kesiştiği bir kavşak noktası olan Kıbrıs adasında Mısırlılardan Hititlere, Asurlulardan Romalılara, Araplardan Venediklilere kadar birçok devlet hüküm sürmüştür. 1571 yılında Osmanlı idaresine geçen adaya 1878 yılında kiracı olarak yerleşen İngiltere, 1914 yılında patlak veren Birinci Dünya Savaşını fırsat bilerek adayı ilhak etmiş ve kalıcı olarak yerleşmiştir. Doğu Akdeniz’in kilidi olan Kıbrıs adasına hâkim olan devlet, Doğu Akdeniz’e kıyısı olan tüm devletlerin ve buradan geçen suyollarının üzerinde bulunan tüm ülkelerinin dış siyasetinin ve ilişkilerinin yürütülmesinde etkili ve yönlendirici olmaktadır. Bu yüzden ada sürekli küresel güçlerin hedefinde olmaya devam etmektedir. İklim, jeolojik, botanik, zoolojik ve kültürel açıdan incelendiğinde Anadolu’nun ayrılmaz bir parçası olduğu açıkça görülen Kıbrıs adası Türkiye ve Türkiye’nin güvenliği açısından ise çok daha fazla öneme sahiptir.
- ItemHope and psychological resilience in primary caregivers of patients with a chronic mental illness followed in a community mental health center(Elsevier, 2024-03) Erkuş, Şeyma; Babacan Gümüş, Aysun; 372023Purpose: The aim of this study is to examine hope and psychological resilience in primary caregivers of patients with a chronic mental illness. Design and methods: The descriptive study was conducted on 297 caregivers in community mental health centers in Turkey. Data were collected using the Introductory Information Form, Dispositional Hope Scale and the Resilience Scale for Adults. Findings: Hope and psychological resilience of primary caregivers of patients with a chronic mental illness were moderate. To sociodemographic and caregiver characteristics; caregivers who are over 40 years old, lost his/her spouse, low education level, housewife or retired, unemployed, who evaluated their incomes low, mother, living in the same house with the patient, caring for ten years or more, caring for another patient and not getting help in care had lower hope and resilience levels. Compared to patients with a diagnosis of bipolar disorder, caregivers of patients with schizophrenia had lower hope and psychological resilience levels. Conclusions: Primary caregivers of patients with a chronic mental illness should be supported in terms of hope and psychological resilience.
- PublicationMathematical model to upcycle end-of-roll leftover fabrics in apparel manufacturing(Sage, 2024-06) İşeri, Ali; Kızılaslan, Recep; 135066This study addresses the problem of end-of-roll leftover fabrics originating after the production of baby/child apparel. The ineffective management of these leftovers results in excess inventory, occupies storage space, and imposes economic and environmental loads. To address this challenge, a novel mathematical modeling approach is proposed. The model maximizes the upcycling of leftovers by incorporating these into the manufacturing of garments while adhering to marketing, production, and ordering constraints. This model also introduces the feasibility of ordering new fabrics with a penalty, as defined by the decision makers, to increase utilization. The model was tested using actual end-of-roll leftover data. The upcycling utilization of leftovers was calculated to be between 57% and 87%. Notably, at an upcycling rate of 58%, 96% of the utilized fabrics were sourced from leftovers. The case study results validate the model efficacy and provide insights into leftover-fabric management.
- ItemPatients' Expectations and Satisfaction Regarding to the Protection of Their Individual Dignity After Surgery: A Cross-Sectional Study(Wiley, 2025-05) Güneş, Ayşegül; Eren, Esra; Tekin, Yasemin Eda; 292320This study aimed to determine patients' expectations and satisfaction regarding protecting their dignity after surgery. This descriptive, cross-sectional study was conducted with 385 patients between December 2024 and February 2025. Research data was collected using the "Inpatient Dignity Scale" and socio-demographic information form. It was determined that the patient's dignity scale expectation and satisfaction total scores were 72.85 +/- 4.509 and 85.03 +/- 8.011. Accordingly, the expectation scores of the young, those with higher education levels, those whose income is lower than their expenses, those who have had surgery before, those who can perform activities of daily living those who can do it with assistance, those who can connect the head and neck are significantly stronger (p < 0.05). The satisfaction scores of the married, those with the highest and lowest education levels, those whose income is lower than their expenses, those who have had a longer hospital stay after surgery, and those who have had head and neck surgery are higher (p < 0.05). New studies should be conducted in surgical units where nursing activities to protect patient dignity are planned, and their results are evaluated.
- ItemPsychological impact of disaster relief operations: a study following consecutive earthquakes in Turkey(Cambridge University Press, 2024-05) İşeri, Ali; Baltacı, Recep; 135066Objective: This cross-sectional study investigates the immediate psychological effects of disaster relief operations on team members following 2 consecutive major earthquakes in Turkey. Methods: A total of 170 participants, including professional firefighters, search and rescue (SAR) workers, and volunteers, were surveyed approximately 1 month after the conclusion of active SAR operations. The study utilizes the DSM-V criteria and the Posttraumatic Stress Disorder Checklist (PCL-5) to assess symptoms of post-traumatic stress disorder (PTSD) among participants. Results: The findings reveal a point prevalence of 35.3% for probable PTSD, highlighting the substantial psychological impact on disaster relief teams. Factors such as age, residency in affected areas, and active SAR involvement significantly influenced probable PTSD rates. Interestingly, actively engaged SAR members had lower probable PTSD rates, possibly due to their training. Those who directly witnessed the earthquakes had higher scores, highlighting the impact of firsthand exposure. Additionally, individuals aged 50 and above displayed a higher mean total severity score compared to younger participants. Conclusions: This research contributes to understanding the mental well-being of disaster relief professionals. The study’s findings underscore the importance of timely mental health support and training for these responders, emphasizing the need for preparedness in disaster relief teams.
- ItemSpatial analysis of the macroeconomic determinants of crime: Evidence from regions of Türkiye(Elsevier, 2025-09) Şengül, Serkan; Canbay, Şerif; 355807This study investigates the macroeconomic and spatial determinants of crime rates in Türkiye by employing spatial panel data models. Using annual data from 12 NUTS-1 regions over the period 2009–2022, the analysis examines the effects of unemployment rate, income inequality (Gini coefficient), inflation rate, per capita income (GDP), public education expenditures, and urbanization on crime rates. Recognizing the spatial dependence structure of regional data, spatial error models are preferred over classical panel estimators. In addition to total crime, the study disaggregates crime data into two major categories—assault and theft—to assess the robustness of results and explore type-specific dynamics. The findings reveal that income inequality, per capita income, and inflation have positive and statistically significant effects on crime rates across all models. While public education expenditures do not exhibit a significant direct effect, their spatially lagged values show a negative and significant relationship with both total and disaggregated crime categories. The urbanization variable is found to reduce theft rates, although its effect on assault is weaker and not consistently significant. The unemployment rate does not appear to be a significant determinant in most specifications. These results highlight the importance of spatially informed, region-specific crime prevention strategies. In particular, the findings emphasize the relevance of interregional spillover effects of education policy and the differentiated impact of urbanization on distinct types of crime. The study contributes to the literature by offering both empirical and methodological advancements through the use of disaggregated crime data and spatial econometric techniques.
- ItemTesting the Forecasting Power of Statistical Models for Intercity Rail Passenger Flows in Turkey(Sage, 2024-11) Ekici, Üsame; Tüydeş Yaman, Hediye; Şendil, NuriWhile going through a major rail transformation, it is important to develop reliable estimation models for rail passenger flows (RPFs) in Turkey. There are two main approaches in RPF estimation, regressions and autoregressive integrated moving-average (ARIMA) models, both of which were in this study developed using the daily RPF data for the period 2011–2015. The ARIMA models (with some variations) were used to forecast first the daily flows in 2016, during which travel restrictions for summer resulted in reduced volumes, successfully captured in the updated ARIMA model. The regression models predicted the expected demand during the restrictions, enabling evaluation of the impact of restrictions, which also showed the models’ power over the longer term. The forecasts were extended to 2017, 2018, and 2019 data. The regression results produced more reliable forecasts over the long term, whereas more accurate predictions were obtained by ARIMA-Sliding (FA-Sld) for short-term planning purposes.
- ItemValue education in elementary ages(IGI Global, 2023) Sayan, Hamiyet; 140851; Demircioğlu, AytekinValue education is the teaching and learning of values as empathy, respect, responsibility, etc. in schools. It aims to feed moral development and ethical advances to array students and equip them with the skills to navigate complex social situation. As an important part of education, value education is interested in developing moral values and ethics of the students. It also helps these students develop understanding and evaluating of the importance of these values like respect, honesty, empathy, and the like. They understand how to manage and live satisfactory quality lives.
