Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Uzun, Sevda(34)
- Tuncer, Metin(11)
- Merdan, Mehmet(10)
- Emirza, Elif Güzide(9)
- Yilmaz, Coskun(9)
- Baltaci, Cemalettin(8)
- Baltacı, Cemalettin(8)
- Tuncer, Gülsüm Zekiye(8)
- Türkkan, Tuğba(8)
- Dinç, Artum(7)
- Araz, Onur(6)
- Bekar, Fevziye(6)
- Cakir, Mehmet Ali(6)
- Ceylan, Levent(6)
- Duran, Celal(6)
- Koçak, Tevfik(6)
- Ozdes, Duygu(6)
- Soydaş, Şafak Sönmez(6)
- Akmeşe, Osman(5)
- Akyol, Hikmet(5)
- Bayrak, Nurten Gülsüm(5)
- Bayrakdaroglu, Serdar(5)
- Bülbül, Kenan(5)
- Ceylan, Halil Ibrahim(5)
- Gücer, Mehmet Ali(5)
- Karimullah, Suud Sarim(5)
- Kavuran, Korhan(5)
- Kaygusuz, Abdullah(5)
- Kulakaç, Nurşen(5)
- Kurnaz, Muammer(5)
- Saydam Eker, Çiğdem(5)
- Turk, Veysel(5)
- Öztürk, Serkan(5)
- (Alieva), Vildane Özkan(4)
- Abada, A.(4)
- Abbrescia, M.(4)
- Abdolmaleki, H.(4)
- Abidi, S. H.(4)
- Abramov, A.(4)
- Adam, C.(4)
Yayınlar
- MakaleAçık Erişim2025Investigation of perceived parental attitude in children exposed to sexual abuse: A case-control study
Bayrak, Nurten Gülsüm; Emirza, Elif Güzide; Uzun, Sevda
Background: The enduring impact of children being subjected to sexual abuse is characterized by lasting traumatic effects. Aims: This study aims to assess the influence of perceived parental attitudes on the incidence of sexual abuse in children who have experienced such abuse, comparing them with a control group. Methods: The research took place at the Child Advocacy Center (CAC) of a hospital in northern Turkey and in the pediatric outpatient clinics of the same institution. The study evaluated 101 children who were exposed to sexual abuse and 100 children who were not. Data collection took place between November 2022 and August 2023. The study employed a ‘Descriptive Information Form’ and the ‘Parental Attitude Scale’ for both case and control groups. The t-test for independent samples, descriptive statistics, and logistic regression analysis were used for data analysis. Results: Analysis of scores from the Parental Attitude Scale revealed significantly lower mean scores in acceptance-involvement and strictness-supervision in the case group (p <.05). The mean scores for ‘acceptance-involvement’ (X¯ = 22.82 ± 6.26, X¯ = 25.71 ± 3.89) were highest in the case and control groups. Neglectful attitude (38.6%) was more prevalent in the case group, while the control group exhibited a higher frequency of democratic attitude (37%). In terms of predictors, acceptance-involvement (OR = 1.091, p =.005) and maternal employment (OR = 4.410, p <.001) were identified as the most significant predictors of exposed to sexual abuse. The study’s Cronbach’s alpha value for the scale was α =.743. Conclusion: The study’s findings on parental attitudes suggest a potential connection between children’s exposure to sexual abuse and inadequate parental acceptance, involvement, supervision, and control.
- MakaleAçık Erişim2025An Examination of Relationships Between Postural Habits and Awareness of Fatigue and Musculoskeletal Discomfort in Nurses
Tuncer, Metin; Tuncer, Gülsüm Zekiye; Turan, Şeyma; Khorshtd, Leyla
Introduction: Prolonged fatigue, caused by the hospital's demanding workload and physical demands, can increase strain on the musculoskeletal system, leading to musculoskeletal issues that may negatively impact nurses' job performance and quality of life. High postural awareness, on the other hand, can help nurses develop correct posture and movement habits, reducing the risk of experiencing discomfort, thus preserving their physical health and supporting workforce sustainability. Therefore, it is of particular importance to determine the relationship of postural awareness to fatigue and musculoskeletal discomfort in nurses working in a hospital environment with heavy working conditions and many ergonomic risks. Aim: The aim of this study was to describe the postural habits, awareness, occupational fatigue levels and musculoskeletal disorders of nurses working in hospitals and to examine the relationships between these factors. Method: This study used a quantitative cross-sectional design. The study sample consisted of 132 nurses working in a hospital in Türkiye. The data for the study were collected between July and October 2023 using the Occupational Fatigue Exhaustion/Recovery Scale (OFER), Cornell Musculoskeletal Discomfort Questionnaire (CMDQ) and Postural Habits and Awareness Scale (PHAS). Results: A significant positive, low-level correlation was found between the Recovery subscale of the OFER scale and the Postural Habits subscale of the PHAS scale (r = 0.277, p < 0.05). A significant negative, moderate-level correlation was observed between the Chronic Fatigue subscale of the OFER scale and the Postural Habits subscale of the PHAS scale (r = −0.311, p < 0.001). Additionally, a significant negative, moderate-level correlation was found between the Acute Fatigue subscale of the OFER scale and the Postural Habits subscale of the PHAS scale (r = −0.326, p < 0.001). Conclusion: This study found that as nurses' correct postural habits improved, both acute and chronic fatigue decreased, whereas recovery increased. It is suggested that interventions aimed at enhancing postural awareness and promoting correct postural habits in nurses may also positively influence occupational fatigue and exhaustion.
- EditoryalYalnız künye2025Preface
Uğur, Ömer; Doğan, Kadir Caner
- KitapYalnız künye2025Foundational Education of Primary-Level Refugee Students: Advancing Fundamental Subject Knowledge
Semercioğlu, Muhammed Serhat; Akçay, Ahmet Oğuz
This book comprehensively explores the educational experiences of refugee students in primary schools, specifically addressing literacy, mathematics, and science skills through innovative teaching methods, including artificial intelligence, coding, and drama-based etc. approaches. Embracing a skill-based learning, the book is enriched with practical applications designed to enhance essential skills among refugee learners effectively. Drawing upon the extensive expertise of contributing authors, each chapter provides in-depth analyses of various dimensions of refugee education, offering valuable insights into targeted pedagogical strategies. Chapters conclude with illustrative activities specifically designed for refugee students, accompanied by detailed evaluations of their outcomes. These activities are not merely theoretical; they are purposefully structured to ensure applicability and adaptability within diverse global educational contexts. This book serves as an essential resource for teacher candidates, educators, researchers, and academics specializing in refugee education and general pedagogy, combining rigorous theoretical perspectives with actionable, real-world strategies.
- MakaleYalnız künye2025Abusive supervision: can workplace friendships exacerbate work alienation and intent to quit?
Özbek, Mehmet Ferhat; Stefanidis, Abraham; Banai, Moshe; Akar, Vural
Purpose – Drawing on conservation of resources, similarity-attraction and social comparison theories, this research aims to examine how supervisors’ abusive behaviour influences employees’ intent to quit by investigating the mediating role of work alienation and the moderating role of workplace friendship. Design/methodology/approach – In Study I, time-lagged survey data were collected from 241 academic institutions’ employees at two separate times to empirically test the study’s hypotheses. In Study II, four different scenario manipulations were administered to 220 academic institutions’ undergraduate and graduate students. Both studies were conducted in Türkiye. Findings – The results of the survey indicate a positive relationship between employee exposure to supervisors’ abusive behaviour and their intent to quit, with work alienation mediating this relationship, and workplace friendship partially boosting the intensity of the negative effect. Similar results were confirmed by the findings of the survey conducted across four scenario manipulations in the education sector. Research limitations/implications – Despite the two-sector, two-instrument study design used, this research may only partially capture and explain the relationships among the studied variables. To enhance the generalisability of their findings, future studies should investigate broader cultural and occupational contexts, using both longitudinal and mixed-method designs. Practical implications – Strong workplace friendships may intensify the negative impact of abusive supervision, increasing staff alienation and turnover intentions, signalling risks for team stability and retention. Economic implications of high-level employee turnover should be considered by managers. Originality/value – This study challenges the prevailing assumption that workplace or academic friendships are universally beneficial. By demonstrating that strong workplace friendships can exacerbate the negative effects of supervisors’ or instructors’ abusive behaviour, it introduces a more nuanced understanding of interpersonal dynamics in organisational and educational settings.
- MakaleYalnız künye2025“I Am Learning to Protect Myself with Mika”: An Evaluation of Self-Protection Behaviors of Turkish Preschoolers
Yılmaz Irmak, Türkan; Kızıltepe, Rukiye; Eslek, Duygu; Kütük, Bahtım; Güney, Onuray
Child sexual abuse (CSA) prevention programs contribute to increases in children’s knowledge and skills to protect themselves from CSA. However, there is a paucity of research investigating self-protection behaviors among children to demonstrate whether relevant CSA knowledge and skills are transferable in risky situations. We aimed to examine the effectiveness of the “I am learning to protect myself with Mika” program on preschool children’s self-protection behaviors. The sample included 51 preschool children (54.9% girls) from Izmir, Turkey and their parents. The mean age of the children was 65.57 months (SD = 7.21). The present study employed a posttest-only control group design, and the classrooms were randomly assigned to the intervention and wait-list comparison groups. The participating teachers implemented the program over a five-week period. Then, children’s self-protection behavior was assessed with children from both groups using a role-play scenario involving a request from a stranger. Accordingly, we tested whether children in the intervention group were more likely to demonstrate self-protection behaviors compared to those in the comparison group. The findings showed that the intervention group (77.3%) rejected the offer from strangers and behaved more safely than did the wait-list comparison group (24.2%; χ2(1) = 13.879, p < 0.001). “I am learning to protect myself with Mika” was found to be effective in contributing to preschoolers’ self-protective behaviors. The promising results obtained in this study may encourage further exploration of the behavioral outcomes of sexual abuse prevention programs.
- MakaleYalnız künye2025The Role of Service Innovation and Work Engagement on Creativity and Training-Learning Effort
Can, Ülker; Kiliçalp, Miray; Akyürek, Suat
Service innovation is a critical phenomenon for the service industry. The purpose of this study is to reveal whether service innovation directly affects employee creativity and their training-learning efforts, as well as whether work engagement has a mediating role in this relationship. In the context of the study, SEM was applied to analyze data collected from food and beverage employees of 5-star hotels. The results of the study revealed that service innovation and work engagement affected employee creativity and their training-learning efforts positively. This study makes a significant and original contribution to the hospitality literature because it is a new study model in terms of revealing the mediating effect of work engagement on employee creativity and their training and learning efforts. Furthermore, the implementation of this model by hotels can increase the success of food and beverage departments in ensuring employee work engagement which has a direct effect on the customer satisfaction process.
- MakaleAçık Erişim2025Development and psychometric evaluation of the father-preterm infant bonding scale
Gül, Uğur; EFE, Emine; Bektaş, Murat
Objective: The purpose of this study is to describe the development process of the Father-Preterm Infant Bonding Scale (F-PIBS) and to report the results of its psychometric evaluation. Methods: A methodological, correlational, comparative, and cross-sectional design was employed. The study was conducted between June 2023 and September 2024 and included 182 fathers with preterm infants hospitalized in the Neonatal Intensive Care Unit (NICU). Exploratory and confirmatory factor analyses were performed to evaluate the reliability of the scale, and validity was tested using Cronbach's alpha reliability coefficient, split-half reliability, item-total correlations, and Hotelling's T-squared test. Results: The scale comprises 10 items distributed across two sub-dimensions. The content validity ratios of the scale items ranged from 0.80 to 1.00. Cronbach's alpha values for the total scale and sub-dimensions were 0.878, 0.796, and 0.845, respectively. Conclusion: F-PIBS is reliable, valid, and appropriate for evaluating father-preterm newborn bonding levels in the NICU.
- MakaleAçık Erişim2025Psychosocial problems experienced by intensive care nurses regarding sleep pattern within the scope of working conditions: A phenomenological study
Atasayar, Belgin Şen; Emirza, Elif Güzide; Uzun, Sevda
Background: Nurses working in intensive care units experience insomnia and accompanying psychosocial problems due to working conditions. Aim: This study explores with a phenomenological approach the psychosocial problems experienced by intensive care nurses regarding sleep patterns within the scope of working conditions. Study Design: In this phenomenological study, semi-structured in-depth interviews were conducted with 16 nurses working in the surgical intensive care unit of a state hospital in Türkiye. Criterion sampling method, one of the purposive sampling methods, was used to reach the sample group. Researchers' interviews continued until they reached data saturation. All interviews were recorded on a voice recorder after obtaining the necessary permissions from the nurses and then transcribed. The study data were evaluated using thematic analysis. The current manuscript was reported following the COREQ checklist. Results: Data analysis revealed three main themes (how working as an intensive care nurse changes sleep patterns, the relationship between shift work, work performance, patient care and how working as an intensive care nurse changes individual life and coping strategies) and nine subthemes (mental, physical, social, work performance, patient care, nutrition, family life, social life and coping). Conclusion: The study's findings revealed that nurses working in intensive care experienced psychosocial difficulties related to sleep patterns and had trouble coping. In particular, it was determined that sleep problems of intensive care nurses cause difficulties in family life, nutrition and social life. It is recommended that the number of personnel in workplaces be increased, overtime hours should be limited, and professional development and training on the importance of sleep for all nurses should be provided. Relevance to Clinical Practice: Nurses working in intensive care units may experience psychosocial problems due to working conditions, which may negatively change their coping skills. Therefore, organizing the working conditions of nurses positively changes their coping skills.
- MakaleAçık Erişim2025Investigation of Nonstandard Finite Difference for Fractional Order Covid-19 Model
Merdan, Mehmet; Acikgoz, Pınar
This article examines a mathematical model of the Covid-19 type. We demonstrate how the population is impacted by immigration, protection, the mortality, exposure, curing, and interactions between sick and healthy individuals. There are five classifications in our model: exposed, susceptible, infected, quarantined, and recovered. The model is subjected to numerical and fractional analysis in this instance. The numerical analysis is performed using the fractional order non-standard finite difference (NSFD) scheme. The Grunwald-Letnikov numerical approximation technique is used for fractional analysis. The findings are evaluated by simulations using the Matlab tool.
- MakaleYalnız künye2025Factors Affecting Separation Anxiety Disorder in Adolescent Earthquake Survivors: The Case of Kahramanmaraş Earthquakes (2023)
Kiymis, Ibrahim; Dogan, Ahsen Aydin
Objective The Kahramanmaras Earthquakes (2023) are the largest and most devastating earthquakes in the history of the Republic. The effects of these earthquakes are particularly deeply felt among younger generations and trigger various psychological factors. Therefore, the aim of this study is to measure the levels of post-traumatic stress disorder (PTSD), social phobia (SP), generalized anxiety disorder (GAD), and depression on separation anxiety disorder (SAD) among adolescent earthquake survivors affected by the Kahramanmaras Earthquakes (2023). Methods In the study, the data were obtained using a survey method. A total of 605 adolescent earthquake survivors exposed to the Kahramanmaras earthquakes were reached. The research was analyzed using structural equation modeling (SEM). Results Surprisingly, according to the research findings, there was no significant and positive relationship between SP (β = -0.006, P > 0.05) and Depression (β = -0.117, P > 0.05) on SAD. Conclusions Consequently, while PTSD and GAD had significant and positive effects on SAD in those adolescent earthquake survivors affected by the Kahramanmaras Earthquakes (2023), SP and Depression did not have significant and positive effects on SAD. Therefore, it is recommended that future studies examine the effects of SP and Depression on SAD more comprehensively and in detail through qualitative research.
- MakaleAçık Erişim2025The biological activity and phenolic content of endemic Astragalus baibutensis
Ozcan, Kadriye; Acet, Tuba; Yiğittürk, Gürkan
Astragalus baibutensis, is a plant endemic to Turkey, belonging to Fabaceae family, that is used as a folk medicine and food in this country. The purpose of this study is to find out the biological activities such as antioxidant, antimicrobial, enzyme inhibitory and DNA protective activity and also analyse the phenolic contents of the plant. To determine of antioxidant activity ABTS and DPPH assays were performed. Disc diffusion and microdilution methods were used to evaluate the antimicrobial activity. Additionally, enzyme inhibitory activities such as α-amylase, α-glucosidase, and tyrosinase were determined by using spectrophotometric methods. DNA protective activity was detected using pUC19 Plazmid DNA. The antiproliferative effect on SKOV-3 human ovarian cancer cells was examined by WST-8 assay. In addition, the phenolic contents were analysed by using HPLC. The biological activity of ethyl acetate extract of the root was found to be higher than those of other extracts. This extract had the highest amount of apigenin as phenolic compound. On the other hand, extracts showed moderate inhibition against the tested microorganism and antiproliferative properties in a concentration-dependent manner toward ovarian cancer cells. According to the results, Astragalus baibutensis has the potential for pharmaceutical and food additive usage.
- MakaleAçık Erişim2025Changes of natural frequencies of masonry stone minarets due to temperature and humidity; [Yığma taş minarelerin doğal frekanslarının sıcaklık ve neme bağlı değişimleri]
Aymelek, Abdullah; Yanık, Yusuf; Yıldırım, Ömer; Türker, Temel
It is very important to distinguish the reason of change in natural frequencies of structures either caused by a possible damage or environmental conditions as temperature and humidity. In this study, the changes in the dynamic properties of masonry minarets under environmental effects such as temperature and humidity were investigated. The Minarets of İskenderpaşa, Hacı Kasım and Tavanlı Mosques in Trabzon were monitored by ambient vibration test method, the relationship between natural frequencies and temperature and humidity was tried to be determined. For this purpose, the natural frequencies of these minarets were measured at certain intervals under different temperature and humidity conditions over a period of approximately six months. The vibration measurement system which was developed by our research team was used in the measurements. From the data collected by these measurements, the variation intervals of the natural frequencies (the smallest and the highest values), the percentages of change and their relations with temperature and humidity were revealed. This relationship was determined by using linear-nonlinear simple and multiple regression analyses. From the study, it was found that the natural frequencies change under environmental effects such as temperature and humidity, and this rate of change was approximately 7%.
- MakaleYalnız künye2025Synthesis of New Triazole Compounds: Determination of Antiurease and Antioxidant Activities
Gümrükçüoğlu, T.İ.; Akgün, H.; Sökmen, B. Bilgin; Bektaş, H.
Abstract: Objective: In this study, we synthesized five novel triazole derivatives and biologically evaluated their antiurease and antioxidant properties. Methods: Five novel 1,2,4-triazole derivatives (5a–5e) were synthesized and tested for their urease inhibition and antioxidant activities using spectrophotometric methods. Results and Discussion: All compounds exhibited varying degrees of biological activity, with compound 5c demonstrating the most potent urease inhibition and radical scavenging capacity. Statistical analysis confirmed significant differences among the compounds, particularly highlighting the superior performance of 5c. Conclusions: These results suggest that halogen-substituted triazoles are promising candidates for further pharmacological development aimed at oxidative stress-related conditions and urease-associated pathologies.
- MakaleYayıncıda açık erişim2025Optimization of rare earth elements recovery from Kızıldag (Karaman-Türkiye) shale ore using response surface methodology
Uysal, Turan; Ünal, Ceren Erust; Akça, Muhammet Esat; Sis, Hikmet; Erdemoğlu, Murat
In this study, the usability of bauxite-related shale ore, rich in Rare Earth Elements (REEs), to produce REEs, which have high added value and critical importance, was investigated. In this context, Kızıldag (Karaman-Türkiye) shale ore, was prepared for tests through size reduction and sampling processes. HCl leaching was performed at different acid concentrations, leaching times, leaching temperatures, and liquid/solid ratios to determine the optimum leaching conditions for the milled ore. The modeling and optimization parameters related to leaching recovery were investigated using the response surface method (RSM). The results were evaluated using analysis of variance, three-dimensional graphs were drawn, and the accuracy of the models was discussed. Accordingly, optimum values were found, and the REE leaching recovery corresponding to these optimum values was 49.13%. It was concluded that the optimization results were compatible with the experimental results, and the average error rate (6.35%) was low.
- MakaleAçık Erişim2025Patients' Experiences With Complementary and Alternative Treatments to Manage Chemotherapy Symptoms: A Phenomenological Study
Özmaya, Esma; Uzun, Sevda
This phenomenological study aims to explore the experiences of individuals undergoing chemotherapy, focusing on their symptoms and the use of complementary and alternative treatments to cope with these challenges. Thirteen individuals diagnosed with cancer in a city in the central region of Turkey were interviewed using a semi-structured, in-depth approach in this phenomenological study. The criterion sampling method was employed to select participants, and interviews continued until data saturation was achieved. Thematic analysis was applied to the audio-recorded and transcribed interviews. The study adhered to the COREQ checklist for reporting qualitative research. The data analysis revealed 2 main categories (effects of cancer and chemotherapy on individuals, the use of complementary and alternative treatments to cope with the symptoms of patients receiving chemotherapy) and 6 themes (psychological effects, social impacts, physical effects, social practices, psychological practices, and physical practices). The study demonstrated that individuals faced significant psychological, physical, and social challenges due to cancer, posing difficulties in coping. The symptoms had a substantial negative impact on individuals. The research identified the use of various alternative methods, such as yoga, the Mediterranean diet, and music therapy, as coping strategies. It is recommended that individuals undergoing chemotherapy explore complementary and alternative treatment methods to effectively manage symptoms.
- MakaleAçık Erişim2025Comparison of drop table and diversified chiropractic techniques in patients with non-specific neck pain; [Comparação das técnicas quiropráticas drop table e diversified em pacientes com dor cervical inespecífica]
Kızıltoprak, Dünya Tajik; Hatıp, Sefa Haktan; Kızıl, Ömer Dicle; Aydın, Emine Büşra
Introduction: Neck pain is a common musculoskeletal disorder associated with pain, reduced cervical mobility, and decreased muscle strength, often leading to functional limitations. Chiropractic manipulation is widely used as a conservative treatment, yet the comparative effects of different techniques remain unclear. ## Objective To compare the effects of the diversified and drop table chiropractic techniques on pain, cervical range of motion, and muscle strength in individuals with non-specific neck pain. ## Methods This randomized controlled clinical trial included 45 participants with non-specific neck pain, randomly assigned to three groups: diversified (DG; n = 15), drop table (DTG; n = 15), and control (CG; n = 15). Interventions were applied twice weekly for four weeks. The primary outcome measure was pain level assessed using the McGill Pain Questionnaire. Secondary outcome measures were cervical joint range of motion assessed with a goniometer and isometric neck muscle strength assessed using a microFET2 dynamometer. Outcomes were assessed pre- and post-intervention. ## Results Both DG and DTG demonstrated significant increases in cervical range of motion compared with the CG. Pain levels significantly decreased in both intervention groups. DG showed significant improvements across all isometric muscle strength measures, while DTG demonstrated selective improvements in flexion and right lateral flexion. CG showed no significant changes, except a decrease in extensor strength. ## Conclusion Chiropractic interventions effectively reduce pain and enhance cervical function in individuals with non-specific neck pain. The diversified technique provided broader muscle strength improvements, while the drop table technique showed more selective effects, emphasizing the need for individualized technique selection in clinical practice. Open access and CC-BY licensed.
- MakaleAçık Erişim2025The technology, innovation, and income inequality nexus: an investigation on G7 countries
Çelik, Orkun; Sayın, Ferhan
This paper aims to explore the causality nexus among technology, innovation, and income inequality for G7 countries. For this aim, the bootstrap panel Granger approach is employed. The dataset covers the years between 1981 and 2015. Using two different Gini coefficients with pre-tax and post-tax income, the impact of income taxes on the nexus above is investigated. The results indicate that the bi-directional causality nexus is not detected in G7 countries except France. The signs of the nexus become different by countries. In this differentiation, income tax plays an important role. The novelty of this paper is to consider both the bi-directional causality and the effect of income tax in the technology, innovation, and income inequality nexus. It is thought that obtained findings may play a significant role in determining income distribution policies for policymakers.
- MakaleAçık Erişim2025Effects of Temperature and Time on the Diffusion Bonding of 316L Stainless Steel and H13 Hot Work Tool Steel
Aydın, Kemal; Yıldırım, Mehmet Serkan; Kaya, Yakup
This study examines the diffusion bonding of 316 L stainless steel and H13 hot work tool steel, aiming to optimize process parameters and assess the resulting microstructural and mechanical properties. Both materials were bonded at varying temperatures (700, 750, and 850 °C) and times (15, 30, and 60 min). The joints are analyzed using scanning electron microscopy (SEM), energy-dispersive spectroscopy, and X-ray diffraction (XRD) to evaluate interfacial morphology, chemical composition, and phase formation. Microhardness measurements indicate an increase in hardness from the 316 L side to the H13 side, suggesting intermetallic phase formation. Shear strength tests show the highest strength at 850 °C for 30 min, with longer times leading to strength reduction due to brittle intermetallic compounds. SEM analysis reveals improved bonding interfaces with fewer voids at higher temperatures and longer times, but the Kirkendall effect causes void formation, negatively impacting mechanical properties. XRD confirms α-Fe and γ-Ni phases, with Fe3C forming at 850 °C for 60 min. This study underscores the importance of process parameters in optimizing joint properties and minimizing brittle phase formation, providing insights for industrial applications requiring robust and corrosion-resistant joints.
- MakaleYalnız künye2025Estimation of Population Mean Using Some Improved Imputation Methods for Missing Data in Sample Surveys
Pandey, M.K.; Singh, G.N.; Zaman, Togla
Abstract.: In this research article, we present novel imputation methods designed to address missing data challenges in sample surveys. We then introduce innovative estimation procedures for calculating population means based on these methods. Our study thoroughly examines the properties of these new estimation procedures, assessing their biases and mean square errors. Through the use of both real and simulated data sets, we demonstrate the superior performance of our proposed estimators compared to existing methods in similar scenarios. In conclusion, we offer practical recommendations for survey practitioners.