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A Symmetry-Based Spherical Fuzzy MCDM Approach for the Strategic Assessment of Alternative Fuels Toward Sustainable Energy Policies
(MDPI, 2025-06) Abdulvahitoğlu, Adnan; 382420
Alternative fuels obtained from renewable sources, providing low greenhouse gas emissions and high energy efficiency, offer significant advantages in terms of sustainability. In addition, the wide applicability of these fuel types in sectors such as housing, transportation, and industry creates significant opportunities in terms of reducing dependence on fossil fuels. Alternative fuels should be evaluated not only according to their environmental contributions but also based on multi-dimensional criteria such as economic cost, technical suitability, sustainability level, fuel properties, infrastructure requirements, and social acceptance. In this context, a comparative analysis of alternative fuel types in terms of various basic parameters is no longer optional, but a necessity. These parameters generally include symmetrical relationships such as balanced trade-offs between economic and environmental dimensions or mutual effects between technical and social criteria. However, they also show variability and uncertainty depending on the fuel type. Therefore, Spherical Fuzzy Multi-Criteria Decision Making (SF-MCDM) methods, which can effectively represent symmetry in membership and hesitation degrees, have been used to achieve more realistic and reliable results in uncertain decision environments. The proposed model provides a systematic and flexible evaluation structure that helps decision makers determine the most appropriate alternative fuel options and contributes to the formation of sustainable energy policies.
A 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; 382420
This 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.
An examination of the psychological resilience of preschool children with and without Montessori education
(Wiley, 2024-08) Sezgin, Elif; Şener, Tülay; 157389
This 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.
Analysis of research on 21st century skills: 2015-2022
(Efe Academy Publishing, 2022) Şengel, Erhan; Aydın, Sevim; 385249; Alanoğlu, Müslim
Since societies are constantly moving and focused on development, educational organizations should improve their education processes. Today, we could say that the most significant change has occurred in technology. The digital transformation experienced with the development of technology has also caused educational organizations to be affected by this transformation. Educational organizations should be ahead of society and lead change to meet social needs. Being a learning organization of educational organizations is closely related to the transformations they will experience. For this reason, it is crucial to address the development processes of educational organizations. I hope that the perspective presented by this book will be beneficial for educators and offer a different perspective on the digital transformation of the education process. I would like to thank esteemed academicians and the EFE ACADEMY family, who contributed to the book's preparation.
Analytical ETBDW Formulation for Electromagnetic Scattering by Circular Apertures on PMC Surfaces
(Springer, 2025-12) Altınel, Mustafa; Yalçın, Uğur; 414019
This study presents and validates a uniform analytical formulation for electromagnetic diffraction from circular apertures on perfect magnetic conductor (PMC) surfaces using the extended boundary diffraction wave (ETBDW) theory. The proposed PMC–ETBDW model incorporates an in-phase reflection coefficient ( = +1) within the boundary kernel, producing a physically continuous and energy-conserving representation of diffracted fields across illuminated, transition, and shadow regions. Expressed through detour parameters and Fresnel-type transition functions, the formulation eliminates phase discontinuities and maintains amplitude normalization consistent with theoretical energy conservation. Numerical evaluations performed for representative aperture radii (a = λ–3λ) and observation distances (r = 3λ–9λ) confirmed the expected 1/r amplitude decay, smooth Fresnel–Fraunhofer transitions, and constructive interference associated with magnetic reflection. Comparative analyses with PEC and opaque boundaries verified that in-phase magnetic reflection enhances on-axis field intensity and preserves phase continuity near the shadow boundary, in full agreement with the dual electromagnetic behavior predicted for PMC interfaces. Beyond its theoretical completeness, the proposed formulation provides a compact and computationally efficient framework for diffraction modeling and hybrid solver integration, offering practical applicability to magnetic coatings, low-RCS reflectors, and metasurface-based structures.
Dams in the wake-up call of the 2023 Türkiye earthquake sequence: Insights from observed damages, risk assessment, and monitoring
(Elsevier, 2024-01) Hariri-Ardebili, Mohammad Amin; Tosun, Hasan
On February 6, 2023, Türkiye experienced a significant earthquake with a magnitude of 𝑀𝑤 7.81, followed by four additional earthquakes throughout the day, measuring 𝑀𝑤 5.8 and above, including one with a 𝑀𝑤 7.5. As a result, over 100 dams in the region experienced low to high seismic loads. The impact of these seismic events resulted in a range of damages to dams, varying from light to severe. The authors participated in several post-earthquake reconnaissance missions to collect perishable data regarding the damage. This paper is threefold: First, it explores the seismic performance and observed damage in 17 dams (majority embankments) based on data collected from the field. During the seismic activity, embankment dams underwent failure modes such as strength deterioration, yielding, settlement, tension crack formation, as well as sliding along planar or circular surfaces. Second, the paper offers an updated seismic risk analysis for ten selective damaged dams in the regions. Total risk factors are quantified using two different methods. The results show that the majority of the studied dams are classified as high and very high-risk dams. Third, the paper evaluates 11 other dams in the region that were equipped with sensors for monitoring the ground motions. The recorded acceleration at the crest and the abutment are further used to investigate the amount of amplification based on transfer functions. These recordings will be crucial for subsequent model calibration and system identification. Overall, the paper’s objective is to contribute to sharing post-earthquake reconnaissance mission information and to establish the groundwork for in-depth numerical analyses and quantitative risk assessments of dams located in seismically vulnerable areas.
EFL instructors’ engagement with AI as digital media: A qualitative case study from Türkiye
(Sage, 2026-05) Ocaktan Çeliktürk, Halenur; 414465
Despite growing interest in integrating artificial intelligence (AI) into language education, research on how EFL instructors adopt, experience, and sustain the use of AI-driven tools over time remains limited. This qualitative study explores Turkish EFL instructors' perceptions and uses of AI-driven tools through the lens of the Unified Theory of Acceptance and Use of Technology (UTAUT). The findings indicate that although most participants initially hesitated to integrate AI-driven tools, they gradually became active users, reflecting increased openness shaped by social influence and contextual factors consistent with the UTAUT framework. While instructors did not consistently adopt technological innovations, they demonstrated curiosity and eagerness to experiment with tools perceived as enhancing teaching performance. Performance expectancy and facilitating conditions, particularly access to technological resources, emerged as key factors influencing adoption. ChatGPT was identified as the most frequently used tool, followed by Grammarly and QuillBot, for material development, assessment, in-class activities, and feedback. At the same time, participants expressed concerns about overreliance and the lack of structured institutional training to support ethical and effective AI use. Overall, the study underscores the growing significance of AI integration in EFL education and highlights the need for sustained professional development to support responsible and pedagogically informed AI-driven practices.
Enhancing 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; 409903
This 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.
Environmental impact of athletes’ diets greenhouse gas emissions, water footprint, and sustainability awareness
(Springer, 2026-01) Acar, Selva; Tuna, Tuğba; Ersoy, Nesli; 336342
This cross-sectional study evaluated the environmental impact of athletes’ dietary patterns by estimating greenhouse gas emissions (GHGE) and water footprint (WF). It also assessed knowledge, attitudes, and behaviors related to sustainable nutrition using a structured questionnaire aligned with the FAO definition of sustainable diets. Conducted between January and August 2023 in Ankara, the study included 100 elite athletes (mean age: 21.0 ± 3.3 years; 65% female) from various sports disciplines. Dietary intake was assessed using a semi-quantitative food frequency questionnaire, and GHGE and WF values were calculated based on life cycle assessment data. The mean GHGE and WF values of athletes’ diets were 3017.1 ± 1877.4 g CO₂-eq/day and 5.4 ± 3.2 mL/g, respectively. Male athletes and strength/power athletes exhibited significantly higher dietary environmental impacts than female and team sports athletes (p < 0.001 and p < 0.05, respectively). Red meat and animal protein consumption were strongly associated with higher GHGE and WF values (p < 0.001). Despite the increasing importance of sustainability, more than 90% of participants lacked accurate knowledge of sustainable nutrition. Moreover, a discrepancy was observed between athletes’ stated willingness to support environmental values and their actual food choices, indicating an intention–behavior gap. This study contributes to the limited literature by quantifying the environmental impact of athletes’ diets while concurrently examining sustainability-related behavioral factors. The findings underscore the importance of integrating sustainability principles into sports nutrition planning and education to reduce environmental impacts while maintaining performance goals.
Evaluating Environmental Performance in the Turkish Cement Industry
(Springer, 2025-04) Yıldız, Hakan; Şengül, Serkan; Köprücü, Yılmaz; 355807; Tsounis, Nicholas; Vlachvei, Aspasia
The 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.
Evaluation of uniform diffraction behavior from circular apertures on opaque and perfectly conductive surfaces using BDW theories
(Emerald, 2026-02) Altınel, Mustafa; Yalçın, Uğur; 414019
This study presents a unified and comparative analysis of uniform diffraction fields generated by circular apertures on three canonical surface types: opaque, perfectly electric conductive (PEC) and perfectly magnetic conductive (PMC). This study aims to explore how these boundaries influence field uniformity and angular behavior under identical conditions.Design/methodology/approachThe classical boundary diffraction wave (BDW) theory is applied to the opaque case, and an extended BDW formulation is developed for PEC and PMC surfaces to account for reflective effects. Analytical expressions are derived, and numerical simulations are conducted to examine the impact of aperture size and observation distance.FindingsThe results reveal that PEC and PMC surfaces introduce significant modifications to the angular distribution of the diffracted field, including phase reversals and amplitude oscillations. The extended BDW model successfully predicts these behaviors, particularly near shadow boundaries and axial zones.Research limitations/implicationsThe study is limited to idealized geometries and monochromatic wave excitation. It does not yet consider material losses or complex aperture shapes. Future work may expand this framework to more realistic electromagnetic structures.Practical implicationsThe findings can help electromagnetic engineers optimize antenna design, stealth surfaces and metastructures by offering better control over field uniformity and diffraction behavior across different surface types.Social implicationsWhile the work is theoretical, it supports technological development in sectors like communication, defense and sensing, contributing indirectly to infrastructure reliability and performance.Originality/valueTo the best of the authors' knowledge, this is the first unified parametric study that simultaneously evaluates opaque, PEC and PMC surfaces using classical and extended BDW approaches. It introduces a novel high-frequency framework for comparing uniform diffraction field behavior across distinct boundary conditions.
Exploring Cognitive Enhancements and Default Mode Network Connectivity in Relapsing-Remitting Multiple Sclerosis: Insights from a Prospective Study Investigating the MIND Diet
(Sage, 2024-09) Demirel, Mert; Daşgın, Hacer; Acar, Nazire Pınar; Özçelik-Eroğlu, Elçin; Atabilen, Büşra; Ertuğrul, Aygün; Akdevelioğlu, Yasemin; Oğuz, Kader Karlı; Tuncer, Meryem Aslı; 396621
The potential therapeutic impact of the Mediterranean-DASH Intervention for Neurodegenerative Delay (MIND) diet on relapsing-remitting multiple sclerosis (RRMS) remains an underexplored area. Objectives/Aims: This study aims to evaluate the influence of the MIND diet on RRMS by examining neurological, cognitive, and functional magnetic resonance imaging (fMRI) parameters. Methods: Seventeen early-stage RRMS patients (aged 20-40, disease duration < 10 years, Beck Depression Inventory Score < 17) underwent MRI at baseline and following a 9-month adherence to the MIND diet. They were matched with 10 healthy controls. Diet adherence was assessed using the MIND Diet scale score. MRI encompassed structural and resting-state fMRI (RS-fMRI) sequences. Neurological evaluation (Expanded Disability Status Scale [EDSS], Timed 25-Foot Walk [T25W], 9-Hole Peg Test [9HPT]), and cognitive assessments (Mini-Mental State Examination [MMSE], Rey Auditory Verbal Learning Test [AVLT], phonemic and semantic fluency, forward and backward digit span tests [FDST, BDST]) were conducted. Functional connectivity was assessed using seed-based correlation (SBC) and global correlation by general linear model (GLM), focusing on Default Mode Network (DMN), Central Executive Network (CEN), Dorsal Attention Network (DAN), Salience Network (SN), Visual Network (VN), and Sensorimotor Network (SMN). Results: Patients exhibited high adherence to the diet throughout the 9-month period. Significant improvements were observed in dominant hand 9-HPT (p=0.023) and AVLT parameters (p<0.001), except delayed recall (p=0.982), following the intervention. Increased connectivity within the whole brain was noted in the left frontal orbital cortex of the 9th-month group compared to healthy controls (p=0.000005). Moreover, RRMS patients in the 9th-month group displayed enhanced functional connectivity in the bilateral caudate, bilateral pallidum, and right putamen within the DMN compared to baseline (p=0.000034). Conclusion: The findings of this study suggest potential cognitive benefits of the MIND diet, as evidenced by improvements in AVLT scores. Furthermore, the observed alterations in Default Mode Network (DMN) connectivity in RRMS patients following the dietary intervention indicate a promising avenue for further investigation into cognitive deficit management in this population
Fabrication of Al/n-GaN/p-Si/Al diodes by thermal evaporation and evaluation of effect of gamma irradiation on device properties
(Elsevier, 2024-12) Olkun, Ali; Kaplan, Hüseyin Kaan; Akay, Sertan Kemal; Sarsıcı, Serhat; Erdoğan, Nursev; 414025
This study investigates the impact of gamma-irradiation on the material and device properties of Al/n-GaN/p-Si/Al heterojunction diodes. GaN thin films were deposited on glass and p-Si substrates using thermal evaporation, followed by annealing at 450 degrees C. The diodes were subjected to gamma-irradiation doses of 0, 3, and 6 kGy. X-ray diffraction (XRD) measurements revealed significant structural changes, including phase transitions influenced by radiation. Electrical characteristics were assessed through current-voltage (I-V) measurements within the +/- 2 V range. Notably, the ideality factor for the annealed diodes improved from 6.60 to 4.62 and 3.85 with increased gamma-irradiation. The barrier height was determined to be 0.85 eV, and it did not exhibit a significant change upon gamma-irradiation dose. The results provided valuable insights into the response of heterojunction diodes to radiation exposure, aiding in the understanding and potential improvement of the radiation resistance of GaN-based electronic devices.
Fixation of superolateral platysma flap to the mastoid fascia: a novel isolated neck lift technique
(Springer, 2024-09) Okumuş, Ayhan; 293876
Background This study aimed to evaluate the utility of a novel neck lift technique based on fixation of superolateral platysma flap to the mastoid fascia in terms of postoperative aesthetic outcome and patient satisfaction within an 18-month follow-up period. Methods A total of 145 female patients who underwent isolated neck lift operation with the superolateral platysma flap technique were included. Global Aesthetic Improvement Scale (GAIS) scores (by the investigator) and the patient reported outcomes were recorded in terms of improvement in the cervicofacial angle, jowls, platysmal bands and malpositioned cervical fats, at 6 and 18 months, postoperatively. The complications were recorded at early postoperative period and at 1, 6 and 18 months, postoperatively. Results The median duration of follow-up was 18 months (range, 6–48 months). GAIS scores at 18th months, revealed exceptional improvement in the cervicofacial angle (82.8%), the jowls (93.1%), platysmal bands (93.1%) and malpositioned cervical fat (97.2%). Majority of patients were very satisfied with the treatment in terms of the aesthetic improvement. Complications involved the minor ecchymosis (17.2%) and minor skin circulatory problem (11.7%) in the early postoperative period, suture exposure (12.4%) in the postoperative 1st month, and cervical band reformation in the 6th (0.7%) and 18th (1.4%) months. Conclusion In conclusion, lateral displacement and fixation of superolateral platysma flap to the mastoid fascia seems to be a useful neck lift technique for correction of platysma- and skin-derived aging sings with minor and manageable complications, immediate return to everyday activities and a high patient satisfaction.
From capture to culture: the asymmetric impact of education on Türkiye's fisheries sector
(Springer, 2025-08) Canbay, Şerif; Şengül, Serkan; Karahan Dursun, Pınar; 355807; 414023
The 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.
From darkness to faith: Muslim afterlife of Jean Rhys’s Voyage in the Dark in Leila Aboulela’s Minaret
(Sage, 2025-09) Koç, Nesrin; 13778
In the years following the publication of her debut novel The Translator (1999), Sudanese author Leila Aboulela has emerged as a renowned figure of British Muslim fiction. Scholarly efforts to situate Aboulela's fiction within broader literary circles have often focused on the influence of prominent figures from Arab and African literatures. While these authors have undoubtedly influenced Aboulela's literary vision, there is a notable yet underexplored influence of a Western female author whose work profoundly informs Aboulela's oeuvre. Jean Rhys - whom Aboulela has described as a 'haunting' presence - casts a significant shadow over her fiction, particularly her novel Minaret. Juxtaposing the narratives of exile, dislocation, alienation and unbelonging in both novels, this study lays bare how Aboulela transforms Anna's voyage in the darkness as a young Creole woman in England, to a story of Najwa's finding light in the embrace of Islam as she negotiates loss, identity, faith and a sense of belonging in a secular Western society. Through such narrative reframing, Aboulela both foregrounds the gendered experience of dislocation as a shared narrative terrain, and also inscribes Muslim subjectivity into the landscape of contemporary British fiction.
Geçmişten günümüze uzaktan eğitim
(Efe Akademi Yayınları, 2022) Şengel, Erhan; Aydın, Sevim; 385249; Karabatak, Songül
İnsan, geçmişte yaşamış ve öğrenmiş olduklarının ürünüdür. Bu nedenle de insanın yaşamında öğrenmenin ve eğitimin rolü çok fazladır. Zaten eğitimin en önemli muhatabı insandır. İnsan da hem maddi hem manevi boyutları olan bir varlıktır. Bu varlığın devamı ve toplumda yer edinebilmesi için gerekli olan bilgi, beceri, anlayış da ancak eğitim yolu ile sağlanabilir. İnsanın daha değerli olmasını sağlayan eğitim, insanın doğuşundan başlayan ölümüne kadar devam eden bir gelişim sürecidir. Çünkü eğitim sonunda bir kişinin bilgi, beceri, anlayış ve davranışlarında kalıcı bir değişimin olması gerekir. Ancak bu değişim farklı şekillerde kendini göstermektedir. Ayrıca insan ihtiyacı olanı öğrendiği için ve öğrendiğinden insanlığın faydalanması için farklı alanlarda bilgi üretir ve ürettiği bilgileri topluma sunar. Tarihsel süreç içerisinde giderek kapsamını genişleten eğitim bilimi de pek çok bilim dalı etkileşime girmiştir. Çünkü eğitim biliminde disiplinler arası bilgi alıverişi oldukça önemlidir. Bu bağlamda Eğitim & Bilim kitap serimizde eğitimin farklı alt disiplinlerinden eğitim bilimlerinde uzman akademisyenlerin kaleminden siz okuyucularımıza hem bilimsel hem de entelektüel bilgiyi ulaştırmayı amaçladık. “Eğitim & Bilim-2022 kitabına özveriyle katkı sunan ve emeği geçen bölüm yazarlarına gönülden teşekkür ederim.
Hibrit 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, Ergenekon
İnsanlık 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.
Hope 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; 372023
Purpose: 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.
International integration and agricultural productivity in Kazakhstan: a Fourier ARDL approach
(Emerald, 2025-11) Şengül, Serkan; Yıldız, Hakan; Canbay, Şerif; 355807
Purpose – This study investigates the effects of Kazakhstan’s membership in international economic organizations such as the Organization of Turkic States (OTS), Eurasian Economic Union (EAEU) and Shanghai Cooperation Organization (SCO) on agricultural total factor productivity (AGTFP) during the period 1992–2022. It aims to understand how institutional integration, trade openness and environmental factors influence agricultural productivity in a transitioning economy. Design/methodology/approach – The analysis employs the fractional frequency Fourier ARDL (FFF-ARDL) method, which allows for modeling potential unknown nonlinear structural breaks. Annual data on AGTFP, agricultural GDP, foreign trade ratio and agricultural carbon emissions are analyzed. Dummy variables are used to capture Kazakhstan’s membership in each international organization and comparative models are estimated. Findings – The results reveal that EAEU membership has a positive and significant impact on AGTFP, while OTS membership shows a negative effect and SCO membership has no significant effect. Agricultural carbon emissions positively influence productivity in the long run but have a short-run limiting effect. Foreign trade openness limits long-run productivity, reflecting structural dependencies. Research limitations/implications – The study is limited to Kazakhstan and focuses on sector-level productivity; cross-country comparisons could provide further insights. Originality/value – This study offers a novel empirical investigation into the long-term effects of international institutional integration on agricultural productivity using advanced econometric modeling. By isolating the impacts of multiple international organizations, it contributes to the understanding of how trade and institutional dynamics shape agricultural performance in developing economies.

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