Toros University

Axillary vein puncture (AVP) is an effective technique in cardiac implantable electronic device (CIED) implantation. This study evaluates the venous tenting (VnT) technique as a novel method and compares its effectiveness to contrast venography (CV) in reducing early and late complications. This retrospective multicenter study included 464 patients who underwent CIED implantation using VnT or CV techniques. Patients were matched 1:1 and divided into two groups: Group 1 (n = 232) included those who underwent VnT, and Group 2 (n = 232) included those who underwent CV. Early complications, including pneumothorax (PTX), pocket hematoma (PH), and pocket infection (PI), were collectively defined as total complications (TC). Late complications were defined as device lead integrity (DLI). Independent predictors of complications were identified using multivariate logistic regression analysis. The TC rate was 5.2%. VnT significantly reduced PH rates (0.9%vs. 4.3%, p = 0.019) and TC rates (2.2%vs. 8.19%, p = 0.003) compared to CV. No significant differences were observed between the groups in PTX, PI, or DLI rates. Multivariate logistic regression analysis identified VnT as an independent protective factor for both TC (p = 0.009) and PH (p = 0.022). During CIED implantation, the VnT technique was associated with lower TC and PH than the CV technique. This study highlights the potential of VnT to improve outcomes. Further prospective studies are recommended to confirm these findings.

The article examines the factors contributing to the improvement of efficiency in regional hotel enterprises, the directions for the development of tourism infrastructure, and modern methods for forecasting hotel activities. Using the case of Uzbekistan, the dynamics of the number of hotels and forecast indicators calculated based on the ARIMA model are analyzed. The results of the study can be used in the development of regional tourism policy

In this study, five different nonlinear growth models Gompertz, Logistic, Gamma, Brody, and Wilmink were compared using the average live weights of 32 Honamlı kids for 8 months of age. The performance of the models was evaluated based on error metrics, fit coefficients, and information criteria, and the findings revealed significant differences between the models. As a result of the overall evaluation, the logistic model (R2=0.987) was determined to be the model that best represents the growth process of Honamlı kids during their early and middle developmental stages, due to its low prediction error, high explanatory power, and superiority in terms of information criteria. The results show that the logistic growth model is an effective method for reliably predicting live weight gain in Honamlı kids and for explaining growth dynamics in a biologically significant way. This model demonstrates that it can be used as a decision support mechanism in planning selection programs, conducting early performance assessments, and developing breeding strategies. It is anticipated that future studies using datasets covering wider age ranges and including environmental factors will contribute to a more detailed understanding of growth characteristics in Honamlı goats.

ABSTRACT Following a high economic growth path, the group of G7 economies is found to be utilising more and more material, causing a material footprint (MF), which in turn contributes to pollution. The MF can be derived from various factors, including fossil fuels, building materials, and biomass. But the G7 countries heavily rely on carbon‐based fuels, which are considered the key source of the MF. The energy security issues further call for control of the situation by lowering the MF and improving the quality of the environment by enhancing the use of renewable sources of energy. The current study intends to add to the literature by exploring the linkages between economic growth and MF, keeping in view the energy security issues in G7 economies over the period from 1985 to 2018. The study crafts a model of environmental pollution by evaluating the effects of economic growth, the energy security risk (ESR), and renewable energy consumption (REC) on the fossil material footprint (FMF). The inferences are drawn using the panel quantile regression (PQR) technique. The outcomes showed that FMF significantly and positively correlated with the ESR, but in the last two upper quantiles, the impact of ESR becomes significantly negative. Likewise, the utilisation of renewable energy is found to control FMF across all quartiles. Moreover, the association between economic growth and FMF proves the invalidity of the EKC hypothesis. Keeping in view the outcomes generated, the study recommended certain policy implications which could help G7 countries to secure SDG 07, SDG 12 and SDG 13 (climate action) directly, whereas SDG 08 and SDG 09 are indirectly.

Milli güç unsurları bir ülkenin uzun vadeli stratejik hedefleri açısından son derece önemlidir. Literatürde tanımlı milli güç unsurları; siyasi güç, askeri güç, ekonomik güç, coğrafi güç, demografik güç (nüfus gücü), psiko-sosyal güç, kültürel güç ile bilimsel ve teknolojik güç şeklinde sıralanmaktadır. Günümüzde, bir ülkenin milli gücünün belirlenmesinde lojistik kapasitesinin önemi giderek artmaktadır. Lojistik, üretimden tüketime kadar olan süreçte mal ve hizmetlerin akışını sağlayan temel bir unsurdur. Bir ülkenin lojistik kapasitesi, ekonomik büyüme, ulusal güvenlik ve uluslararası rekabet gücü gibi pek çok alanda belirleyici bir rol oynamaktadır. Lojistik, tedarik zincirinin her aşamasında etkinlik ve verimlilik sağlayarak ekonomik büyümeyi destekler. Üretimden başlayarak, depolama, taşıma ve dağıtıma kadar olan süreçlerde hızlı ve düşük maliyetli bir akış, bir ülkenin rekabet avantajını artırır. Ayrıca, lojistik altyapısının etkinliği, dış ticaret hacmi üzerinde doğrudan bir etkiye sahiptir. İyi geliştirilmiş limanlar, havaalanları, demiryolları ve karayolları, bir ülkenin dış ticaret hacmini artırarak milli gücünü güçlendirir. Lojistik aynı zamanda bir ülkenin ulusal güvenliği için kritik öneme sahiptir. Lojistik zincirindeki herhangi bir aksama, stratejik malzemelerin tedarikini tehlikeye atabilir ve askeri operasyonların etkinliğini azaltabilir. Bu nedenle, bir ülkenin lojistik altyapısının güçlendirilmesi, ulusal savunma kabiliyetini artırır ve stratejik bağımsızlığı destekler. Bu kapsamda çalışmanın amacı; lojistiğin, bir milli güç unsuru olarak önemini vurgulamak ve milli güç unsurlarıyla ilişkisini ortaya koyacak yeni bir yaklaşım sunmaktır.

It is crucial to reveal the attitudes and behaviours of individuals towards the COVID-19 disease to be able to develop the right health policies and interventions. With this research we examined the effects of pre-school teachers’ COVID-19 fear levels on their attitudes towards the COVID-19 vaccine. The study was carried out with 405 pre-school teachers from 34 different provinces of Turkey who participated voluntarily. In this study, descriptive data were collected online. The data were obtained using the introductory information form, the COVID-19 fear scale, and the COVID-19 attitude towards vaccination scale. We determined that the negative attitudes towards the vaccine differed significantly according to age group and that the attitudes of younger teachers towards the vaccine were more negative. It has been revealed that pre-school teachers’ fear of COVID 19 had a significant and positive effect on the development of a positive attitude towards the COVID-19 vaccine (p < 0.001), while the effect of fear of COVID-19 on the negative attitude towards the vaccine was not significant. Public health experts point out that many infectious diseases may occur in the future. Teachers educate future generations and serve as role models for children and their families. Therefore, determining the fears and attitudes of teachers on COVID-19 and similar infectious diseases may turn a possible crisis into an opportunity.

This study aims to identify trends in out-of-school learning in mathematics education and provide guiding insights for future research. A bibliometric analysis was conducted on 406 academic studies published in the Web of Science (WoS) database over the last decade. The analysis examined relationships among countries, authors, keywords, and academic collaborations. Findings indicate that the United Kingdom, Australia, Spain, Germany, the United States, Turkey, and China have made significant contributions to this field. Among the most productive authors, Parchmann I, Jablonski S, and Ren L stand out, while Education Sciences, Frontiers in Psychology, and Frontiers in Education are the most frequently publishing journals. Citation analyses highlight the Journal of Research in Science Teaching and the International Journal of Science Education as key publication outlets. Keyword analyses show that the most commonly used terms related to out-of-school learning in mathematics education are students, science, education, mathematics, and achievement. Co-occurrence network analyses suggest that these concepts are academically interconnected, forming a significant research area in the context of student achievement and science-mathematics education. Thematic analyses based on centrality and development levels reveal that STEM education, informal learning, and motivation are high-centrality core themes. The bibliometric findings highlight potential research directions and emphasize the need for increased interdisciplinary collaborations. A detailed examination of out-of-school learning environments that support student achievement and academic development will provide a valuable contribution to the literature.

In today’s dynamic organizational environments, the capability to manage change effectively has become a critical determinant of institutional success and sustainability. This study aims to develop and validate the Change Management Scale (CMS), a multidimensional tool designed to assess organizations’ ability to plan, implement, and institutionalize change. The research employed a quantitative design and collected data from three sectors—education, healthcare, and energy/renewable energy—where change processes are both rapid and deeply impactful. To establish the structural validity of the CMS, Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) were conducted on data obtained from three independent sample groups. Criterion-related validity was examined through correlations between the CMS and the Openness to Organizational Change Scale, demonstrating a positive and significant relationship. The EFA and CFA results supported a three-factor structure—Strategic Decision and Leadership, Preparation and Planning, and Implementation, Monitoring, and Institutionalization—with satisfactory model fit indices. Reliability analyses revealed Cronbach’s alpha coefficients above .70 for all dimensions, indicating high internal consistency. The findings confirm that the CMS is a valid and reliable instrument for measuring change management practices across diverse organizational settings. Its concise structure and sector-neutral design make it suitable for application in various industries and cultural contexts. The CMS contributes to both theory and practice by providing researchers and practitioners with a practical framework for assessing, monitoring, and enhancing organizational change capability. The scale items are presented in both English and Turkish at the end of the study.