Aksaray Üniversitesi Kurumsal Akademik Arşivi
DSpace@Aksaray, Aksaray Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Power consumption analysis of ESP32 and arduino nano for low-power applications
(Institute of Electrical and Electronics Engineers Inc., 2025) Demir, Hasan; Selçuk, İlayda; Coşgun, Atıl Emre
This study experimentally examined the energy usage of the ESP32 and Arduino Nano microcontroller boards in active and deep sleep (power-down) modes. Both boards were powered by a continuous 5 V voltage, and current measurements were obtained directly using a multimeter. The experimental results indicated that the ESP32 board consumed 45.5 mA in active mode and 5.27 mA in sleep mode, whereas the Arduino Nano consumed 18 mA in active mode and 5.39 mA in sleep mode. The power consumption of the ESP32 was determined to be 0.2275 W in active mode and 0.02635 W in sleep mode, whereas the Arduino Nano exhibited power consumption of 0.09 W in active mode and 0.02695 W in sleep mode. The statistics acquired demonstrate that both platforms are appropriate for low-power applications; however, the ESP32 shows more energy consumption in active mode, necessitating meticulous energy management planning during the design phase.
PET-CT indications and contributions to diagnosis in the rheumatology clinic: a retrospective analysis
(Springer Science and Business Media Deutschland GmbH, 2025) Kahraman Denizhan, Tuğba; Kaplan, Hüseyin; Kızıltepe, Melih; Kökoğlu, Emel Oğuz; Cengiz, Celil Barlas; Abdulrezzak, Ümmühan; Şenel, Abdurrahman Soner
Positron emission tomography-computed tomography (PET-CT) is a valuable imaging modality in both oncology and autoimmune or inflammatory diseases. This study evaluates the indications for PET-CT in rheumatology patients, compares PET-CT findings with other imaging modalities, and assesses its contribution to definitive diagnosis. Methods: Between January 2022 and December 2023, 63 patients (38 women, 25 men) who underwent PET-CT at Erciyes University Rheumatology Clinic were retrospectively analyzed. Clinical, laboratory, and imaging findings—including prior CT, magnetic resonance imaging (MRI), and angiographic evaluations—were reviewed. PET-CT findings were classified based on metabolic uptake patterns indicating malignancy, vasculitis, inflammatory involvement, lymphadenopathy, and IgG4-related diseases. PET-CT results were statistically compared with final diagnoses. Results: The most common indications for PET-CT were suspected vasculitis (42.9%), fever/inflammation of unknown origin (30.2%), and suspected malignancy (27.0%). PET-CT detected inflammation in 65.1% of cases, lymphadenopathy in 52.4%, nodules in 41.3%, malignancy in 31.7%, and vasculitis in 20.6%. Vasculitis findings were significantly higher in patients with pre-existing rheumatic disease (p = 0.012), while malignancy-related findings were more frequent in those without (p = 0.025). Anti-SSA and anti-Scl70 positivity were significantly associated with malignancy (p = 0.003 and p = 0.030, respectively). PET-CT effectively detected malignancy (p < 0.001) but showed limited diagnostic accuracy for vasculitis (47.6%). Conclusion: PET-CT complements conventional imaging in evaluating vasculitis, inflammation, and malignancy in rheumatic diseases. However, it is insufficient for diagnosing vasculitis alone, necessitating a comprehensive clinical and laboratory approach. While PET-CT is highly effective in malignancy detection, autoantibody presence should be carefully considered in suspected cases.
Culturally driven renewable energy adoption: cross-regional insights and strategies for inclusive energy transitions
(Institute of Electrical and Electronics Engineers Inc., 2025) Akıl, Murat; Durmuş Şenyapar, Hafize Nurgül; Bayındır, Ramazan
Renewable energy transitions are not solely technological or economic processes but fundamentally cultural. This study explores how cultural values, beliefs, and social norms influence the adoption of renewable energy technologies across diverse global regions. Using a qualitative exploratory research design and document analysis, the paper examines case studies, international datasets, and peer-reviewed literature to identify how cultural dynamics shape public attitudes, policy acceptance, and behavioral responses. Thematic analysis reveals recurring patterns across regional and sociocultural contexts, highlighting stark contrasts between the Global North and South and urban and rural communities. Key cultural factors such as community identity, trust in institutions, spiritual worldviews, and communication practices emerge as critical to adoption outcomes. The study proposes culturally sensitive strategies-including participatory governance, localized communication, and value-aligned policy design-to enhance renewable energy systems' legitimacy, inclusivity, and sustainability. By reframing cultural context as a catalyst rather than a barrier, the paper advances an interdisciplinary perspective that calls for integrated efforts among policymakers, engineers, social scientists, and communities. This research offers actionable insights for building renewable energy futures that are not only efficient but also equitable and culturally resonant.
Driving quality forward: a study on the utilization of qı tools by hospital quality managers
(Springer Netherlands, 2025) Demirci, Şenol; Gökmen Kavak, Demet; Aras, Yasin; Çizmeci Şenel, Figen
There are numerous ways to improve the quality of healthcare services, and Quality Improvement (QI) tools play a central role in this. These tools are essential for identifying problems, reducing errors and costs, modifying practices, generating innovative ideas, acquiring and analysing data, visualising issues, and supporting decision-making. Using them effectively promotes healthcare quality, patient safety, and optimal resource utilisation. Despite the importance of QI tools, the lack of systematic and comprehensive data on the frequency and purpose of their use in healthcare facilities constitutes the main problem area of this study. This descriptive and cross-sectional study examines the frequency and purpose of QI tool usage among quality managers in hospitals across Türkiye. The study population comprised quality managers from 248 hospitals who fully completed the survey. It focused on the use of 18 widely recognised QI tools, including Brainstorming, Fishbone Diagram, Five Whys, Flowchart, Control Chart, PDCA Cycle, FMEA, Histogram, Scatter Diagram, Process Mapping, and others. The results indicated that the least known tools were the Swiss Cheese Model, Spaghetti Diagram, Six Thinking Hats, House of Quality, Mapping the Last Ten Patients, Tree Diagram, and Pareto Chart. Conversely, Brainstorming, Fishbone Diagram, Five Whys, and Flowcharts were the most frequently used. QI tools were primarily used for generating ideas, visualisation, identifying problems, and analysing them. Significant differences in tool usage were observed based on experience in healthcare and quality roles. The findings underscore the complementary nature of QI tools and the need for enhanced training and awareness.
Evaluation of calcium and non-phytate phosphorus deficient diets: effects on growth performance, carcase yield, tibia characteristics and jejunum histomorphology at 42 days of age in broilers
(Taylor and Francis Ltd., 2025) Cufadar, Yusuf; Olgun, Osman; Gökmen, Seyit A.; Gül, Esra T.; Sevim, Behlül
The objective of this study was to ascertain the impact of dietary calcium (Ca) and non-phytate phosphorus (nPP) levels that were progressively reduced in feed on performance, carcase, tibia traits and jejunum crypt depth and villus height in broilers. 2. For the purposes of this study, 480, one-day-old chicks were randomly distributed into four treatment groups, with eight replicates per group and 15 birds per replicate. The starter period consisted of two different diets; the control diet contained 0.96% Ca and 0.48% non-phytase phosphorus (nPP) and the L-nPP diet contained 0.90% Ca and 0.45% nPP. The grower and finisher periods consisted of four different diets, namely control, L-nPP1, L-nPP2 and L-nPP3. The Ca contents of the control, L-nPP1, L-nPP2 and L-nPP3 diets during the grower period were 0.87%, 0.83%, 0.79%, 0.75% and the nPP contents were 0.44%, 0.42%, 0.40%, 0.38%, respectively. In the finisher period, the Ca contents of the control, L-nPP1, L-nPP2 and L-nPP3 diets were 0.78%, 0.71%, 0.60%, 0.50% and the nPP contents were 0.39%, 0.35%, 0.30%, 0.30%, respectively. 3. Dietary treatments had no effect on body weight or body weight gain; however, a decrease was observed in the L-nPP2 and L-nPP3 diet groups compared to the control group over the 11–24 d period. 4. No significant differences were observed in terms of tibial diameter, wall thickness or cross-sectional area. However, tibial ash and shear force were significantly lower in all groups with reduced Ca and nPP levels compared to the control group. The group fed the L-nPP3 diet exhibited a significantly higher crypt depth in comparison to the control and L-nPP1 groups, which was accompanied by a lower ratio of villus height to crypt depth. 5. Wheat and maize-based broiler diets can be fed with 23% reduced Ca and nPP levels of recommended values without adversely affecting growth performance but may compromise skeletal health and intestinal histomorphology of broilers.
