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Multifunctional SnO2-@ doped glass fiber-reinforced concrete: improved microstructure, mechanical, dielectric, and energy storage characteristics
(Elsevier Ltd, 2025) Ramazanoğlu, Doğu; Subaşı, Azime; Musatat, Ahmad Badreddin; Demir, Ahmet; Subaşı, Serkan; Maraşlı, Muhammed
This study explores SnO₂-based hybrid composite (SnO₂-@) doped glass fiber-reinforced concrete (GFRC) for enhanced dielectric, energy storage, and mechanical performance. Microstructural analysis confirmed SnO₂-@ promotes ettringite and calcium silicate hydrate (C-S-H) formation, improving matrix integrity. Aged samples exhibited a 650 % increase in surface roughness (Ra) and over 200 % higher Leeb hardness, demonstrating durability. Dielectric spectroscopy revealed frequency-dependent tunability: 1 % SnO₂-@ achieved a peak dielectric constant (ε' = 130 at 10 kHz), shifting to ε' = 140 at 100 kHz for 2–3 % doping. AC conductivity surged by 60 %, correlating with SnO₂-@-induced interfacial polarization and charge mobility. Energy storage capacity improved significantly, attributed to optimized dipole alignment and reduced leakage currents. Color stability remained robust (ΔE* ≤ 2.8 post-aging), ensuring aesthetic viability. These results position SnO₂-@-doped GFRC as a multifunctional material for smart infrastructure, integrating structural resilience, adaptive dielectric properties, and energy storage potential for next-generation urban applications.
Experimental and optimization study of nanofluid utilized PVT systems with hydrocarbon based PCM: an energetic-exergetic approach
(Elsevier Ltd, 2025) Kurtoğlu Sontay, Kübra; Öğüt, Elif; Ustaoğlu, Abid; Özkan, Doğuş; Kurşuncu, Bilal
Cooling of photovoltaic thermal (PVT) systems is crucial for enhancing electrical efficiency by reducing the operating temperature of photovoltaic modules. Elevated temperatures negatively affect the performance of PV cells, leading to a decline in energy conversion efficiency. Photovoltaic thermal (PVT) systems, hybrid technologies that generate electricity and heat, are crucial for efficient energy conversion. This study uniquely explores the performance of a PVT system by integrating phase change materials (PCMs) and nanofluids in PVT systems combined with optimization analysis. By combining these advanced cooling methods, both electrical and thermal efficiencies are significantly optimized, demonstrating the potential for improved energy conversion in PVT systems. Within this scope, three identical systems–water-cooled, nanofluid-cooled, and a combination of nanofluid cooling with PCM- were analyzed regarding electrical, thermal, and exergy efficiencies. Identical panels were placed side by side and tested. Additionally, an optimization analysis has been conducted to enhance the performance of each panel by evaluating the thermal and electrical efficiency values obtained from experimental data based on system parameters and levels. In addition, thermogravimetric analysis and differential scanning calorimetry were conducted to determine the melting point of the Hydrocarbon-Based PCM. Compared with traditional methods, these analyses conducted in conjunction with the experimental study provide a more reliable basis for performance evaluation studies of PVT systems. The results of the experimental study showed that Nanofluid-Integrated PVT with Hydrocarbon-Based PCM achieved 11.7 %, 11.6 % and 10.6 % higher electrical efficiency, overall exergy and electrical exergy respectively, compared to the water-cooling method. Additionally, a 6.6-fold increase in thermal efficiency and a 4.4-fold increase in overall efficiency were observed. Similarly, compared to the nanofluid cooling method, this combination provided 4.9 %, 5.9-fold and 3.47 % improvements in the electrical, thermal and overall exergy efficiencies metrics. The results of the optimization analysis revealed that the combination of PCM and nanofluids ensures greater stability in electrical efficiency values under high-temperature differences. It was also observed that solar irradiance is the most influential parameter affecting efficiency. The obtained results demonstrate that the nanofluid-cooled system integrated with PCM has a significant impact on enhancing the performance of PVT systems. The combined use of nanofluid and PCM considerably improves all efficiency parameters.
The Role of RRA heat treatments on corrosion behaviour of AlSi10Mg produced by additive manufacturing
(Elsevier B.V., 2025) Özer, Gökhan; Tütük, İbrahim; Cingöz, Umut Can; Koç, Ebubekir; Karaaslan, Ahmet
In this study, AlSi10Mg samples were produced using the Powder Bed Laser Fusion (PBLF) method with standard parameters. Specimens were retrogression and re-aging (RRA) heat-treated at various conditions. The effects of the RRA heat treatments on the properties of PBLF parts were examined by microstructure, electrical conductivity, and electrochemical corrosion tests. Microstructural properties were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy-dispersive X-ray (EDS) analysis. The results showed that after RRA heat treatment, the electrical conductivity of the material decreased slightly, and the corrosion resistance increased.
Analyzing traffic accident trends and correlations in Iraq: an investigative statistical approach
(American Institute of Physics, 2025) Hassooni, Dhuha Khalid; Ghasemlounia, Redvan; Hilal, Miami Mohammed; Al-Saffar, Zaid Hazim; Mohammed, Ghufran Taha
Traffic accidents are for two reasons, human-related and road-related structural behavior, two of which are in need of investigation. Herewith, this study embarks on an analysis of the dynamics of traffic accidents within Iraq, with a pronounced emphasis on statistical analyses concerning Baghdad, the capital city which is bearing the highest accident rates. An expansive dataset encompassing 10959 traffic incidents recorded over the year 2022 is utilized with this paper examining the distribution and nature of road accidents alongside the resultant degrees of injury. Through the deployment of Histograms and Q-Q Plots, the research confirms the normality of the data, paving the way for subsequent Pearson Correlation and ANOVA tests. These statistical methodologies reveal moderate, yet statistically insignificant, correlations between the nature of accidents and the characteristics of roads, with an F-statistic of 0.247 indicating no substantial effect of accident nature on the type of roads within Baghdad. Notably, the analysis extends to gender-referenced mortality records and root cause analyses that highlight significant seasonal fluctuations in accident occurrences, as well as pivotal gender disparities in road traffic incidents. The city-based accident records, detailed distributions of traffic accidents by nature, degree of injury, and recent accident trends, alongside statistical test visualizations, collectively underpin the analytical discourse. In conclusion, the paper asserts the critical necessity for targeted interventions and policy reforms aimed at mitigating these identified trends and contributing to the broader objective of enhancing road safety in Iraq.
Performance of ECC mortar containing limestone powder as a full replacement of fine aggregate
(American Institute of Physics, 2025) Mohammed, Ghufran Taha; Abed, Jasim Mohammed; Hassooni, Dhuha Khalid
Limestone powder (LP), derived from marble dust and stone waste, was utilized as a sand substitute in engineering cement compounds (ECC). This readily available material is a by-product of industrial waste from local quarries and stone cutting, and it was sourced from Mosul factories for this research. The study aimed to fully replace the fine aggregate in ECC with LP. Experimental findings demonstrated that LP had an impact on the hardening and drying process, resulting in longer drying and hardening times. Consequently, there was a decrease in the initial compressive and tensile strength. However, the use of finer LP compensated for this effect. Seven mixtures were tested with varying LP/PC (Portland Cement) replacement ratios (0.75, 1, 1.5, 2, 2.5, 3, and 3.5). The best results were obtained with mixture M5. The addition of LP led to an increase in compressive strength, with values reaching up to 32.40 MPa at 28 days. Finer LP particles further enhanced this effect. Conversely, increasing the LP/PC replacement ratio resulted in a reduction in tensile strength due to the higher water-cement ratio. The tempering effect contributed to an enhancement of 3.92 MPa in tensile strength. The incorporation of LP significantly reduced the environmental impact by decreasing the demand for natural resources. The use of limestone in the ECC mortar gave good results for tests of the mechanical properties of the mortar, as this is considered a viable option for use in building, construction, and repair operations. It is recommended that further improvements, research, and studies be conducted to improve the formulations and types of such alternative mortar.
The comparison of the effects of post-activity performance enhancement on foot plantar pressure and vertical jump in traditional set and cluster set training configurations
(MRE Press, 2025) Kale, Mehmet; Boyacı, Abdurrahman; Tolali, Ali Berkay; Yol, Yeliz; Ayaz, Ezgi; Tutar, Murat; Başoğlu, Umut Davut
Background: There is no study about the effects of post-activity performance enhancement on foot plantar pressure and vertical jump in different set configurations. This study aimed to compare the effects of post-activity performance enhancement on foot plantar pressure and vertical jump in traditional set and cluster set training configurations. Methods: The study included 27 volunteer university students (age: 20.0 ± 1.2 year, height: 180.2 ± 6.9 cm, body weight: 76.0 ± 11.8 kg). Static foot plantar pressure (SFPP), countermovement jump (CMJ), and squat jump (SJ) were performed as pre-tests 8 min after the half-squat 1 repetition maximum (HS 1RM) test. After pre-tests, 12 reps of training were performed with 70% of the HS 1RM by varying the training configurations of 1 × 12 reps traditional set (TS) on the 4th day, 3 × 4 reps cluster set 1 (CS1) with 30 s rest on the 8th day, and 6 × 2 reps cluster set 2 (CS2) with 10 s rest on the 12th day. Post-tests were performed in the following of each configuration. Repeated Measures Analysis of Variance (ANOVA) was used for the statistical comparison of the tests in four different time intervals. Results: There were no statistically significant SFPP differences in four different time periods, while statistically significant differences were found in the CMJ (p < 0.001) and SJ (p = 0.002). Pairwise comparisons showed that CMJ pre-test (CMJP RE ) had statistically significant differences with CMJT S, CMJCS1 and CMJCS2 . There were also differences between SJP RE and SJCS1, SJT S and SJCS2 for the SJ (p < 0.05). Conclusions: In conclusion, based on the results of the study, it is recommended to use any of the TS, CS1 and CS2 configurations to increase CMJ and to use the CS1 configuration to increase SJ as a performance enhancement at 8 min post-activity.
Enhanced photovoltaic power forecasting in renewable energy systems using genetic algorithm and SVM approaches
(Institute of Electrical and Electronics Engineers Inc., 2024) Büyükbıçakcı, Erdal; Atlı, Cahit; Dumanlı, Metin; Bulat, Selçuk
Modern energy management struggles to integrate renewable energy (RE) resources like wind and solar electricity into power networks. Accurate power forecasting models improve grid reliability and stability, helping solve this problem. This research analyses renewable energy power forecasting models' literature, focusing on significant improvements in the last decade.High-quality statistical error metrics-based forecasting model research articles are examined. The proposed system includes data analysis, feature engineering, and model training. Feature engineering includes normalization, PCA, and WD. To increase the feature set, photovoltaic (PV) and wind power generating factors are considered. The GA-SVM-based model forecasted solar power outputs in renewable energy systems with 93.18% training accuracy. Innovative renewable energy forecasting methods, including feature engineering and model optimization, are reviewed in this article. For optimal RE resource integration into power networks, renewable energy forecasting must be more accurate and efficient.
Deep learning algorithm for dessert recognition and nutritional evaluation
(Food Reseach Institute, 2025) Yusun, Sevilay; Yılmaz, Onur; Tarlak, Fatih
Food recognition systems are crucial for healthcare and the food industry, aiding in diet tracking, personalised meal planning, and promoting nutritional awareness. This work develops a software interface that recognises food products using deep learning algorithms, and announces their nutritional values and gastronomic characteristics. Specifically, photographs of various desserts were captured in a restaurant setting, and the classification performance of two deep learning models, GoogleNet and ResNet-50, was analysed. Both models achieved high accuracy rates exceeding 99.6 %, with ResNet-50 demonstrating superior performance due to its lower error rates, higher accuracy, and faster learning capabilities. Based on these results, the interface was developed using ResNet-50 to provide consumers with detailed gastronomic information about desserts and support healthier dessert choices. At present, the resulting software is limited to the 23 dessert items on the menu of Healin restaurant (Nisantasi, Istanbul, Turkey), and the way they look in that particular restaurant, but the scope could be expanded in the future. This innovative approach enhances consumer awareness about healthy eating while offering a competitive edge for the food industry by effectively meeting consumer expectations.
Investigation of the relationship between well-being, body awareness and depression parameters in healthy adults
(Inonu University, 2025) Safran, Ertuğrul; Zeylek, Beyzanur; Gültekin, Hasan Can; Usluer, İrem Nur; Otsay, Selva
In this study, the relationship between well-being, body awareness and depression in healthy adults has been examined. This study aims to contribute to the existing literature on this topic and provide a better understanding of the interrelationships between these factors and their influence on mental health. In this study, a cross-sectional design was used, and a total of 39 healthy individuals, consisting of 19 men and 20 women, were included. The participants' mean age was found to be 28.1±7.29 years. The Beck Depression Inventory, Body Awareness Questionnaire, and Well-Star Scale were used to assess depression, body awareness, and well-being, respectively. The data were analyzed using SPSSv.21, and Pearson or Spearman correlation analyses were used to determine the relationships between the parameters. The findings of the study revealed a significant positive relationship between well-being, body awareness, and depression parameters. The results indicated that body awareness practices can have a positive impact on emotional regulation and overall well-being. In conclusion, this study supports the hypothesis that body awareness plays a crucial role in mitigating depression in healthy adults. The correlations observed between well-being, body awareness, and depression parameters underscore the significance of body awareness in promoting mental well-being and reducing the risk of depression.
Exercise-induced muscle oxygenation changes in fibrosing interstitial lung diseases: a near-infrared spectroscopy study
(Mattioli 1885, 2025) Pehlivan, Esra; Zeren, Melih; Özcan, Zeynep Betül; Karaahmetoğlu, Fulya Senem; Demirkol, Barış; İlhan, Umut; Ataç, Amine; Çetinkaya, Erdoğan
Background: The impact of fibrosing interstitial lung disease (F-ILD) on the oxygenation of peripheral and respiratory muscles during exercise remains poorly understood. Specifically, it's unclear whether regional blood flow influences exercise capacity in these patients, and if so, to what degree. Objectives: This study aimed to investigate changes in oxygenation and blood flow volume of the intercostal (IC) and quadriceps femoris (QF) muscles during exercise in patients with F-ILD. Methods: Muscle oxygenation (SmO2) and total haemoglobin (tHb) changes of IC and QF were measured in 36 F-ILD patients using near-infrared spectroscopy (NIRS) during six-minute walking test (6MWT). Resting, minute-by-minute change, and average data were analyzed. Results: At rest, SmO(2)was significantly higher in IC compared to QF (p<0.001). When adjusted for SmO(2)at rest, SmO(2)at the different time points during 6MWT, average SmO(2)during 6MWT, and lowest SmO2 during 6MWT did not differ between QF and IC muscles. Also, SmO(2 )did not vary significantly during 6MWT in either QF (F=2.193) or IC muscle (F=1.262). THb increased more in QF than in IC. THb of IC inversely correlated to respiratory functions and 6MWT distance. Conclusion: Peripheral and respiratory muscle oxygenation in F-ILD seems to be normal. However, blood flow volume in exercising muscle, not muscle oxygenation, may be a contributing factor to exercise intolerance. Patients with poorer respiratory function may require excessive blood flow in their respiratory muscles which in turn may limit the blood flow available for exercising peripheral muscles.
Starting route: Istanbul street food
(Elsevier B.V., 2025) Yarmacı Güvenç, Nihan; Evren, Seray; Köz, Ela Nazlı
The gastronomy routes, which have the functions of diversifying tourism products, increasing the gastronomy tourism quality, creating attraction, and contributing social and economic development, are thought to be especially necessary in Istanbul. Integrating Istanbul's historical, cultural, and natural structure with the city's street food and turning them into a route is considered beneficial in various aspects. In this context the aim of the research is to create Istanbul street food routes, considering the outline formed within existing gastronomy-themed routes. In order to achieve the goal, the data were gathered from 36 gastronomy-themed routes in Istanbul presented on TripAdvisor were analyzed. The findings such as duration and width of routes, language options offered, cultural and historical sites visited and passed by in the routes, presented food categories, street food varieties according to districts, and experience offered are used to develop suggestions for Istanbul street food route.
Can Vitamin D reduce the need for SSRI by modulating serotonin synthesis? : a review of recent literature
(Springer Nature, 2025) Bostan, Zekiye Zeynep; Bulut, Melike Sare; Gezmen Karadağ, Makbule
Purpose of Review: This study aims to analyze the effects of vitamin D on serotonin synthesis, release, and function in the brain, and to explore its relationship with various psychiatric disorders. Recent Findings: The hormone calcitriol plays a vital role in regulating a multitude of biological processes within the human body. Its deficiency can lead to significant adverse effects on overall health and well-being, including physical and psychological consequences. Evidence indicates that vitamin D may exert influences through receptors in the brain, modulating serotonin production and influencing emotional and cognitive processes. Recent studies propose that elevated serum vitamin D may enhance mood and alleviate depressive states. The impact of vitamin D on cognitive function and behavior remains an area of ongoing investigation. This literature review analyses the available evidence on how vitamin D intake impacts the severity of illness and medication requirements in diverse psychiatric disorders. A review of the literature suggests that there may be a correlation between vitamin D and serotonin, which could potentially contribute to more favorable outcomes in the context of illness. Vitamin D may increase the amount of serotonin in the synaptic gap, which is the intended use of selective serotonin reuptake inhibitors (SSRIs), with its effect on the increase in serotonin release. Summary: According to reports, vitamin D supplementation in conjunction with SSRI group medication provides an additive effect for the management of psychiatric disorders.
The effect of internet addiction on surgical nurses' malpractice tendencies: Turkish sample
(Springer Nature, 2025) Gezginci Akpınar, Elif; Orhan, Büşra Nur; Göktaş, Sonay
Background This study aimed to determine the effect of surgical nurses' internet addiction on their malpractice tendencies. Methods The descriptive cross-sectional study included 1051 nurses working in the surgical awards of 10 hospitals in Istanbul. Data were collected using a descriptive characteristics form, the Internet Addiction Scale, and the Malpractice Tendency Scale. An increase in the score on the internet addiction scale indicates that internet addiction increases. In contrast, an increase in the score on the malpractice tendency scale indicates that malpractice tendency decreases. Data were analyzed using independent groups t-test, one-way ANOVA test, Pearson correlation and linear regression analyzes with IBM SPSS Statistics version 22.0 software. Results A weak negative correlation was found between the surgical nurses' total scores on the Internet Addiction Scale and Malpractice Tendency Scale (r=-0.422 p < 0.001). Internet addiction total score was also negatively correlated with malpractice tendency subscale scores for medication and transfusion administration safety (r=-0.450 p < 0.001); infection prevention (r=-0.416 p < 0.001); patient monitoring, device, and material safety (r=-0.321 p < 0.001); fall prevention (r=-0.325 p < 0.001), and communication (r=-0.332 p <= 0.001). In linear regression analysis, an increase in internet addiction overall and in the lack of control subscale was associated with greater malpractice tendency (ss=-0.422 and ss=-0.243, respectively). Internet addiction explained a total of 17.7% of the total change in malpractice tendency (R2 = 0.177). Conclusion Surgical nurses showed increased malpractice tendency as their internet addiction level increased. This relationship was seen in all domains of malpractice, including medication and transfusion administration safety, infection and fall prevention, communication, and patient monitoring, device, and material safety. It is recommended that in-service training be planned for conscious internet use to limit the time nurses spend on the internet during working hours.
Structural and electrical properties of CuO-doped NaNbO3 ceramics
(Walter de Gruyter GmbH, 2025) Berksoy Yavuz, Ayşe; Danışman, Murat
Ceramics are one of the key materials of today’s industry. The manufacturing technique used for preparing the ceramics greatly affects the material’s structural and electrical properties. Therefore, the elements and their distribution in the material as well as understanding their relation with the manufacturing process are the key factors for managing the expected outcome. In this study, NaNbO3 ceramics and the effect of CuO-doping in solid state calcination process was investigated. For this purpose pure, 0.5 mol.% and 1.0 mol.% CuO-doped sample discs were prepared. Crystallite size, strain, atomic structure, lattice parameters and atomic occupancies of the material were calculated by using X-ray diffraction patterns combined with Rietveld analysis. Additionally, the samples were investigated with the scanning electron microscopy technique to observe the effect of CuO doping. For electrical characterization, dielectric constant and tangent loss measurements were carried out on samples. As a result, it was concluded that CuO doping affected the crystal structure of the NaNbO3 which triggered the changes in its electrical behavior. The observed effects were more pronounced at 1.0 mol.% CuO content.
The acute effects of motor imagery combined with action observation breathing exercise on cardiorespiratory responses, brain activity, and cognition: a randomized, controlled trial
(Wiley-Hindawi, 2025) Atak, Ebrar; Ataç, Amine
Breath and brain activity have been integral to daily life since time immemorial. Cognition and cardiorespiratory responses are closely interlinked, necessitating further investigation into their dynamics. The potential benefits of combining motor imagery (MI) and action observation (AO) based breathing exercises in rehabilitation have not been fully explored. This study was aimed at assessing the acute effects of MI combined with AO on cognitive function and cardiorespiratory responses. Thirty-three healthy adults were randomized into MI combined with AO breathing (MI+AO), active respiratory exercise (ARE), and control groups, with equal distribution across groups. Electroencephalography (EEG) data were collected using a Muse EEG headband, and cognitive function was assessed using the Montreal Cognitive Assessment (MoCA) while imagining activities were measured via the Kinesthetic and Visual Imagery Questionnaire (KVIQ). Significant improvements in the Timed Up and Go (TUG) test and systolic blood pressure were observed in the ARE group (p < 0.05), alongside improvements in MoCA and KVIQ scores (p < 0.05). EEG data revealed significant decreases in delta and theta power at the temporoparietal (TP) location in the ARE group (p < 0.05). These findings suggest that MI and AO, when combined with respiratory exercises, may serve as effective passive strategies to support cognition and cardiorespiratory function, particularly in individuals who struggle to actively participate in pulmonary rehabilitation.
Lactate kinetics and fatigue dynamics in elite taekwondo athletes during a 30-second continuous jump protocol
(Projack, 2025) Kaya, Mehmet Zeki; Shahidi, Seyed Houtan
Background: This study examines lactate kinetics and performance declines during a 30- second BOSCO jump protocol in elite Taekwondo athletes, providing insights into anaerobic performance and recovery. Methods: Anthropometric data, including age, height, and weight, were collected, with averages of 21.2 years (+/- 2.0), 181.4 cm (+/- 4.8), and 70.6 kg (+/- 4.3). Fatigue-induced changes were assessed by measuring jump heights, contact times, and power outputs using the Witty Jump Mat (Italy) during the first and last 5 seconds of the protocol. Blood lactate concentrations were measured with the Lactate Scout 4 (Germany) at baseline, immediately postexercise, and at 3, 6, and 9 minutes post-exercise. Results: Significant declines were observed in jump height (mean decrease = 13%, p = 0.01) and power output (mean decrease = 15%, p = 0.02), alongside an increase in contact time (mean increase = 18%, p = 0.03), reflecting the impact of fatigue on explosive performance. Athlete B showed the greatest reduction in jump height (31.36%), revealing notable inter-individual variability in fatigue resilience. Blood lactate levels increased significantly from baseline (mean = 0.78 +/- 0.08 mmol/L) to peak post-exercise (mean = 3.16 +/- 1.19 mmol/L, p < 0.001) and subsequently declined. Lactate clearance rates were calculated as 40.5% at 3 minutes, 60.5% at 6 minutes, and 65.5% at 9 minutes post-exercise. Athlete D exhibited the fastest clearance rate (72%, p = 0.02), while Athlete C demonstrated delayed recovery. Conclusions: The findings underscore the need for tailored conditioning programs to optimize anaerobic performance and recovery in Taekwondo athletes. Future research should explore the effects of targeted training on anaerobic capacity and competition readiness in combat sports.
Orta güçte bir kalıcı mıknatıslı senkron motorun performans karakteristiklerinin deneysel olarak elde edilmesi
(Institute of Electrical and Electronics Engineers Inc., 2024) Demir, Onur; Erfan Kuyumcu, Feriha; Kep, Yusuf
Dünya çapında, kalıcı mıknatıslı senkron makinelere (KMSM) olan ilgi, uygulama alanlarının genişlemesiyle, bilhassa yenilenebilir enerji kullanımının artması ve ulaşımın elektrifikasyonu ile birlikte sürekli artmaktadır. KMSM'nun yüksek performans gerektiren robot uygulamalarında da giderek daha fazla kullanıldığını ve bu uygulamaların sadece doğruluk ve yüksek performans değil, aynı zamanda tasarım sürecinde ve uygulamada esneklik ve verimlilik sağlayan hız kontrolörleri gerektirdiğini göstermektedir. Son on yılda, hızla ilerleyen teknolojik çalışmalarla birlikte bahsedilen motor yapısına entegre edilen güç elektroniği kısmının gelişmesiyle modern teknolojide enerji verimliliği ve çevresel sürdürülebilirlik konuları da önemini korumaktadır. Orta güçte (110kW) bir Kalıcı Mıknatıslı Senkron Motorun performans değerlerini incelemek üzere, FOC (Alan Yönlendirmeli Kontrol) yöntemi ile laboratuvar ortamında yapılan dinamik testlere ilişkin sonuçlar bu çalışmada sunulmaktadır.
Sustainability in international trade: the importance of political risk analysis
(Springer Nature, 2024) Köseoğlu, Ahmet Murat
SustainabilitySustainability in international tradeInternational trade is increasingly an important factor for companies. Political risk analysisPolitical risk analysis has great importance in this context. Political risk analysisPolitical risk analysis supports companies’ decision-making processes in international tradeInternational trade. This analysis helps them to determine the countries that are riskier to do business in and contributes to making strategic decisions to increase sustainabilitySustainability. Political risk analysisPolitical risk analysis also guides companies in identifying markets that align with their sustainabilitySustainability goals. Companies need to make decisions based on political risk analysisPolitical risk analysis results to minimize risks and carry out their business projects sustainably. Managing political risks positively affects the financial performance of companies. Minimizing risks increases confidence in long-term decision-making processes and makes businesses more attractive to investors. Companies can use political risk analysisPolitical risk analysis to protect their supply chains against political risks that could threaten sustainabilitySustainability. Political risk analysisPolitical risk analysis affects not only financial sustainabilitySustainability but also social and environmental sustainabilitySustainability. Within this scope the aim of this study is to examine the role and importance of political risk analysisPolitical risk analysis for the sustainabilitySustainability of international tradeInternational trade. Political risk, political risk factors, the dimensions of political risk factors, and the relationship between political risk and sustainabilitySustainability in international tradeInternational trade have been examined in detail in this context. This relationship has been handled globally depending on the political risk comparison of countries. The study found that the most significant political risks are political instability, changing political regulations, and customs and trade restrictions. In addition, it has been observed that some countries have better policies and regulations on environmental and social sustainabilitySustainability issues. As a result, political risk analysisPolitical risk analysis is a critical tool to help companies achieve sustainabilitySustainability goals in international business. It has also been considered that political risk analysisPolitical risk analysis is very important in identifying potential risks, guiding decision-making processes, and increasing sustainabilitySustainability.
Effects of lower extremity isoinertial strength training on shooting speed, dynamic balance, and dribbling skills in adolescent football players
(Editura Universitatii din Pitesti, 2025) Kaya, O.; Tutar, Murat; Çağlayan, Atakan; Korkmaz, Halil
Purpose. Research indicates that the quadriceps muscle group significantly influences jumping, balance, and ball-striking speed, while the hamstrings play a crucial role in maintaining knee stability during running and twisting movements. This study aims to evaluate the impact of isoinertial strength training, which is believed to enhance hamstring strength in young football players, on dynamic balance, dribbling skills, and shooting speed. Materials and Methods. Forty-two U-16 football players from amateur team academies participated in the study and were divided into an experimental group (EG, n = 21) and a control group (CG, n = 21). In this study, young football players in the EG engaged in a 15-min isoinertial strength training program, incorporated into their warm-up routine twice a week for 8 weeks, before standard football training sessions. In contrast, the CG adhered to their usual warm-up and football training practices during the study period. The research design involved pre-test assessments, a 6-week isoinertial training intervention, and post-test evaluations. Pre-test data were collected from all participants before the training period, and post-test data were collected upon completion of the program. Various performance measures were evaluated, including height, body weight, body mass index (BMI), the Y-balance test for dynamic balance, dribbling skills, and shooting speed. These assessments provided a thorough analysis of both physical and skill-related factors pertinent to football performance. The CG maintained their standard training regimen without the addition of isoinertial strength exercises, facilitating a comparison of the effects of the isoinertial training intervention on the selected outcomes. Results. The data presented in this study indicate the potential of eccentric training to significantly enhance shooting speed (p < 0.001), balance (p < 0.001), and skill performance (p < 0.004) in adolescent athletes (p < 0.001). Conclusions. Improving skill-related performance during adolescence is crucial for creating effective movement patterns early in athletic development, thereby preparing athletes for more complex movements in the future.
A latitudinal evaluation between the learning styles and modes of the students in interior architecture education and the YKS score types
(Istanbul Teknik Universitesi, Faculty of Architecture, 2024) Özsırkıntı Kasap, Handan; Türkmen, Anday; Aksoy Özler, Kübra; Tayilga, Gamze
The objective of this study is to investigate the relationship between the Higher Education Examination Score Types and Kolb Learning Styles of undergraduate students enrolled in the “Interior Architecture” and “Interior Architecture and Environmental Design” programmes, which accept students with diverse score types. In this context, a hypothesis was formed based on the difference between the score types and learning styles of students admitted to the Department of Interior Architecture with a numerical score type and students admitted to the Department of Interior Architecture and Environmental Design with an equal weight score type. A comparative relational survey model was selected to test the hypothesis. The study population consisted of foundation universities in Istanbul. In the 2021-2022 academic year, there were students enrolled in undergraduate programmes in interior architecture (and environmental design) at 34 foundation universities in Istanbul. The sample comprises 166 undergraduate students enrolled at Maltepe University’s Department of Interior Architecture and Istanbul Gedik University’s Department of Interior Architecture and Environmental Design. In the context of quantitative research, the convenience sampling method, one of the random sampling types, was employed to collect data. The Kolb Learning Style Inventory was employed to ascertain the learning styles of the students. The findings of this study indicate that there is no significant difference between the learning styles of students at Maltepe University and Istanbul Gedik University, thereby supporting the research hypothesis.

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