Scopus İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12514/3596

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Encoding IoT Data: a Comprehensive Review of Image Transformation Techniques
(Sakarya University, 2025) Altunkaya, D.; Okay, F.Y.; Özdemir, S.
In the era of the Internet of Things (IoT), where smartphones, built-in systems, wireless sensors, and nearly every smart device connect through local networks or the internet, billions of smart things communicate with each other and generate vast amounts of time-series data. As IoT time-series data is high-dimensional and high-frequency, time-series classification or regression has been a challenging issue in IoT. Recently, deep learning algorithms have demonstrated superior performance results in time-series data classification in many smart and intelligent IoT applications. However, it is hard to explore the hidden dynamic patterns and trends in time series. Recent studies show that transforming IoT data into images improves the performance of the learning model. In this paper, we present a review of these studies that use image transformation/encoding techniques in the IoT domain. We examine the studies according to their encoding techniques, data types, and application areas. Lastly, we emphasize the challenges and future dimensions of image transformation. © 2025, Sakarya University. All rights reserved.
Surgical Patients' Knowledge and Practices Regarding Non-Pharmacological Methods Used in Symptom Management
(Ataturk Universitesi, 2025) Tanriverdi, S.; Söylemez, N.
Objective: This study aimed to determine the knowledge and practices of surgical patients regarding non-pharmacological methods used in symptom management. Methods: This descriptive study was conducted with 172 patients hospitalised in the surgical clinics of a hospital in Mardin province of Türkiye. Data were collected face-to-face between the dates November 2022 and February 2023 with a patient characteristics form and questions about complementary and alternative therapies. Results: It was determined that 64% of the patients were aware of spiritual therapy practices, and 45.3% of them always used these practices. Massage (54.1%), hot application (50.1%), and spiritual therapy (52.3%) were used to reduce pain; spiritual therapy (44.8%) was used to relieve fatigue and weakness; herbal treatment (16.3%) and spiritual therapy (20.3%) were used to relieve nausea and vomiting; spiritual therapy (57.0%) was used to reduce anxiety, fear, and stress; and spiritual therapy (30.9%) was used to relieve depressive mood. Conclusion: It was found that the majority of the patients participating in the study knew non-pharmacological methods such as massage, hot-cold application and spiritual therapy, and nearly half of them believed in the effectiveness of these methods and preferred spiritual methods most frequently. © 2025, Ataturk Universitesi. All rights reserved.
Roles of Loneliness and Life Satisfaction in the Relationship Between Perceived Friend Social Support, Positive Feelings About the Future and Loss of Motivation
(Elsevier B.V., 2025) Aslan, Y.; Koçak, O.; Kaya, A.B.; Alkhulayfi, A.M.A.; Gómez-Salgado, J.; Yıldırım, M.
Purpose: University students often face psychological challenges, particularly loneliness and hopelessness, which are exacerbated by factors such as limited social interactions, economic uncertainty, lack of employment opportunities, and the increasing prevalence of online education. This study aims to investigate the relationships among perceived friend social support, loneliness, life satisfaction, and the sub-dimensions of hopelessness, which are positive feelings about the future and loss of motivation. Design/methodology/approach: This cross-sectional quantitative study was conducted with 420 university students who completed a series of self-reported measures, including the Multidimensional Perceived Social Support Scale, the UCLA Loneliness Scale, the Satisfaction with Life Scale, and the Beck Hopelessness Scale. Findings: The findings revealed that perceived friend social support was positively associated with life satisfaction and positive future feelings and negatively associated with loneliness and loss of motivation. Both loneliness and life satisfaction individually and serially mediated the relationships between social support and the dimensions of hopelessness. Conclusion: These results highlight the crucial role of friend-based social support in alleviating loneliness and improving life satisfaction, thereby fostering optimism and preventing motivational decline among students. The findings provide valuable insights for designing interventions to enhance emotional well-being and psychological resilience among university populations. © 2025 The Authors
Cytotoxic Effect of Zinc Oxide and Selenium Nanoparticles Synthesized From Orobanche Picridis on Lung Cancer as Well as Their Antimicrobial and Antioxidant Properties
(John Wiley and Sons Ltd, 2025) Ercan, L.; Çalişkan, C.
Orobanche picridis represents a fascinating example of an obligate parasitic plant due to its lack of chlorophyll. It is of significant interest to botanists, ecologists, and biologists because of its complex parasitic lifestyle and specific host preferences. The purpose of this work was to generate zinc oxide (OrZnO) nanoparticles (NPs) and selenium (OrSe) nanoparticles from O. picridis and examine their characterization as well as their antibacterial, anticarcinogenic, and antioxidant characteristics. To this purpose, the produced NPs were characterized utilizing a scanning electron microscope, energy-dispersive X-ray spectroscopy, X-ray diffraction, and Fourier-transform infrared spectroscopy. The antimicrobial activity of OrZnO and OrSe NPs was assessed employing the disc diffusion and agar well diffusion methods, while in vitro antioxidant activity was assessed through three different assays: DPPH, FRAP, and ABTS. The MTT assay was utilized to ascertain the cytotoxicity of these nanoparticles against lung cancer, and acridine orange/ethidium bromide staining was carried out to analyze morphological and DNA alterations in these cells. Consequently, the synthesized OrZnO NPs exhibited stronger antibacterial capabilities than the OrSe NPs, while both demonstrated antioxidant properties. In addition to their potent cytotoxic action, both NPs induced apoptosis by altering the DNA and shape of the lung cancer (A549) cells. © 2025 John Wiley & Sons Ltd.
Beyond Human Touch: Evaluating the Effectiveness of AI, Human, and Hybrid-Generated Tourism Promotional Texts
(Emerald Publishing, 2025) Carvalho, I.; Loureiro, S.M.C.; Ivanov, S.; Björk, P.; Seyitoğlu, F.
Purpose – This research aimed to compare the effectiveness of human-generated, AI-generated (ChatGPT), and hybrid promotional texts using the AIEDA model, which incorporates anticipated emotions from the Model of Goal-Directed Behavior. Design/methodology/approach – We conducted an experimental study and applied PLS-SEM and other inferential statistics to analyze whether 455 participants from the UK could differentiate between human-created, AI-generated (ChatGPT), and hybrid promotional texts and compared promotional effectiveness. Findings – Participants were not able to distinguish between the three texts. However, the human-generated text was consistently less preferred. Effectiveness perceptions declined as participants suspected AI authorship, regardless of the text’s actual source (human, AI, or hybrid). The AIEDA model, which incorporates positive and negative anticipated emotions, proved effective in all three scenarios. Practical implications – Tourism marketers can leverage AI for content creation but should maintain human oversight. Originality/value – The study adds to communication theories and research on promotional text by deepening our understanding of algorithmic authorship and its impact on consumer behavior in tourism marketing. This study was one of the first to compare the effectiveness of human-created, AI-generated, and hybrid texts in tourism marketing, correlate respondents’ preferences toward advertising texts with texts’ suspected AI authorship, and use an extended AIEDA model. © 2025 Emerald Publishing Limited
The Transcript of a Long Story: a Critical Analysis of Eurocentric Prejudices in Turkey's European Union Membership Process
(Scientific Scholar LLC, 2025) Birkan, O.
Turkey’s European Union (EU) membership process has long been knotted in identity-based discussions that frame Turkey as an outsider, reinforcing the perception that it poses a cultural and political challenge to European unity. This study critically examines the role of Orientalist narratives in shaping the EU’s approach to Turkey’s membership, arguing that Turkey’s exclusion is not merely a result of political or economic misalignment but is deeply rooted in Eurocentric prejudices. Drawing on Edward Said’s Orientalism (1978), this paper explores how the concept of "Europeanization" extends beyond institutional alignment ("EUization") to include implicit cultural and civilizational boundaries. The study employed a qualitative, interpretative methodology to analyze the EU’s lengthy strategies and policy frameworks that construct Turkey as the "Other." It further investigates how Orientalist tropes manifest in debates surrounding Turkey’s geopolitical position, religious identity, and democratic credentials, affecting the EU’s inconsistent application of membership criteria. The findings reveal that the EU’s reluctance to integrate Turkey stems from an exclusionary European identity that prioritizes ethno-religious homogeneity over pluralism. Furthermore, mechanisms such as the “privileged partnership” model and discourse on the EU’s "absorption capacity" reflect an Orientalist mindset that seeks to control rather than integrate Turkey. By uncovering these underlying biases, this study contributes to broader discussions on European identity, integration policies, and the persistence of Orientalist thought in contemporary political discourse. © 2025 Journal of King Saud University – Science-Published by Scientific Scholar.
Indication-Based Planning for Tracheostomy in Pediatric Intensive Care Units: a Comprehensive Approach
(Lippincott Williams and Wilkins, 2025) Gokce, R.; Dedeoglu, S.; Kilinç, T.; Samanci, S.; Kozan, G.; Toprak, S.F.
Background: Tracheostomy in pediatric intensive care units (PICU) is an important procedure that has become increasingly common in the last decade, reflecting advances in neonatal and pediatric intensive care. Methods: Main clinical diagnoses were grouped according to the organ system involved. Indications for tracheostomy were defined as the main reason for performing a tracheostomy. Patients were categorized into 4 categories according to the indications for tracheostomy. Namely, airway anomalies (AA), central nervous system (CNS) diseases, cardiopulmonary insufficiency (CPI), and neuromuscular diseases (NMD). Results: Nontraumatic neurological diseases were present in 30 patients (43.4%), genetic or metabolic diseases in 15 (21.7%), infection and sepsis in 9 (13%), malignancy in 6 (8.6%), cardiorespiratory disorders in 5 (7.2%), and trauma in 4 (5.7%). In group analysis, there was no difference in the frequency of early and late problems between newborns and older children. Conclusion: The timing of tracheostomy in the PICU is an important factor that has a significant impact on patient outcomes. The available literature provides valuable insight into the potential benefits of early tracheostomy in improving outcomes in critically ill pediatric patients. © 2025 by Mutaz B. Habal, MD.
Blockchain-Enabled Strategies for Sustainable Business and Organisational Growth
(Springer, 2025) Kurnaz, G.; Kılıç, C.
This chapter examines the transformative role of blockchain technology in fostering sustainable business and organisational growth. It highlights blockchain’s capacity to enhance supply chain transparency, promote innovative business models and embed ethical practices into corporate strategies. Blockchain’s decentralized and immutable features enable organisations to address challenges such as resource inefficiency, unethical practices and stakeholder mistrust. The integration of blockchain with the principles of the smart circular economy offers a pathway for redefining linear economic models, emphasizing reuse, remanufacturing and recycling to achieve sustainability goals. Furthermore, blockchain-enabled tokenization and decentralized decision-making frameworks are explored as tools for incentivizing sustainability and improving resource management. Despite its potential, blockchain adoption faces barriers, including regulatory uncertainties and technological standardization issues. This chapter underscores the necessity for strategic frameworks, stakeholder collaboration and a culture of continuous learning to fully leverage blockchain’s potential for sustainable practices. By addressing these challenges, blockchain technology can become a cornerstone for achieving long-term sustainability and resilience in businesses and organisations. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.
High-Flow Nasal Cannula Oxygen Versus Conventional Oxygen Therapy in a Rat Model of Severe Carbon Monoxide Toxicity
(MRE Press, 2025) Cakmak, Sumeyye; Gokdemir, Gul Sahika; Gokdemir, Mehmet Tahir; Sogut, Ozgur; Erkan, Revsa Evin Canpolat
Background: This study compared the efficacy of high-flow nasal cannula (HFNC) oxygen therapy with conventional oxygen therapy (COT) using a simple face mask for clearing carbon monoxide (CO) from the bloodstream in a rat model of severe CO poisoning. Methods: Twenty-eight male Wistar rats were assigned to four groups: severe CO intoxication treated with HFNC, a sham group (no intoxication or treatment), severe CO intoxication treated with COT, and a control group with severe CO intoxication receiving no treatment. Their arterial blood gas and metabolic parameters were analyzed and compared to determine treatment effectiveness. Results: Significant differences were observed among the groups in terms of carboxyhemoglobin (COHb), pH, bicarbonate (HCO3), hemoglobin, sodium (Na), potassium (K), calcium (Ca), glucose and lactate levels. Both treatment groups had lower COHb and lactate levels compared to the untreated control group, with COHb clearance being significantly higher in the HFNC group than in the COT group (20.33% +/- 3.58% vs. 41.17% +/- 6.49%; p < 0.001). Additionally, pH levels were higher in the HFNC group than in the COT group (7.32 +/- 0.07 vs. 7.27 +/- 0.05; p = 0.486). Conclusions: HFNC oxygen therapy was found to be more effective than COT in promoting CO elimination and improving arterial blood gas parameters, indicating its potential as a superior treatment strategy for severe CO poisoning.
First Report of Fusarium Equiseti Causing Postharvest Fruit Rot of Avocado in Türkiye
(Wiley, 2025) Bozoglu, Tugba; Dervis, Sibel; Ozer, Goksel; Turkkan, Muharrem
In September 2024, postharvest fruit rot, including stem-end rot, was observed on avocado in the Alt & imath;nordu district of Ordu province, located in the Eastern Black Sea Region of T & uuml;rkiye. A market survey revealed that 5% of fruit exhibited fruit rot symptoms, a subset of which displayed stem-end rot symptoms, including brown to black lesions extending into the mesocarp, shrivelling and fungal mycelium growth. Fusarium equiseti was identified as the causal agent through morphological characterisation and molecular analysis using PCR amplification and sequencing of translation elongation factor 1-alpha (tef1) and RNA polymerase II second largest subunit (rpb2) gene sequences, including phylogenetic analysis. Artificial inoculation and subsequent re-isolation confirmed Koch's postulates, verifying F. equiseti as the causal pathogen. This is the first report of F. equiseti causing both fruit rot and stem-end rot on avocado in T & uuml;rkiye, highlighting the need for improved postharvest disease management strategies to reduce economic losses in T & uuml;rkiye's avocado industry.
Control Strategy Evaluation for Reactive Power Management in Grid-Connected Photovoltaic Systems Under Varying Solar Conditions
(Nature Portfolio, 2025) Adak, Suleyman
Solar energy is environmentally friendly and one of the most significant renewable energy sources. This energy is a leading renewable energy source, contributing significantly to sustainable development goals. In grid-connected photovoltaic (PV) systems, reactive power management is essential for maintaining voltage stability and ensuring reliable operation. However, the influence of fluctuating solar irradiation (G) on reactive power (Q) behavior is often underrepresented in conventional inverter control strategies. This research addresses this gap by modeling the dependence of reactive power on solar irradiance using a data-driven curve-fitting approach. The methodology involves the acquisition of real-world operational data, preprocessing, selection of an appropriate analytical model, and validation of its performance. The findings indicate that reactive power increases under low irradiance conditions, primarily due to inverter behavior and grid voltage support requirements. The resulting analytical expression offers a practical framework for integrating irradiance-dependent reactive power control into inverter firmware or grid management software. The model performed with high accuracy with an R2 of 0.9955. This contribution enhances the ability of PV systems to respond dynamically to environmental changes, improving grid compatibility, operational efficiency, and voltage regulation in modern distributed energy networks.
Isokinetic Knee Strength as a Predictor of Performance in Elite Ski Mountaineering Sprint Athletes
(MDPI, 2025) Kural, Burak; Caglar, Esin Cagla; Akkus Ucar, Mine; Ozer, Ugur; Yenturk, Burcu; Cayir, Huseyin; Ceylan, Levent
Background and Objectives: This study aims to investigate the relationship between isokinetic knee strength and competition performance in elite male ski mountaineering sprint athletes and to identify strength parameters that predict performance and contribute to injury prevention. Materials and Methods: Thirteen male athletes participating in the Ski Mountaineering Turkey Cup final stage were included. Isokinetic knee flexion (FLX) and extension (EXT) strength of dominant (DM) and non-dominant (NDM) legs were measured at angular velocities of 60 degrees/s and 180 degrees/s using the DIERS-Myolin Isometric Muscle Strength Analysis System. Competition performance was evaluated using the ISMF scoring system. Data were analyzed using SPSS 26.0 with Pearson correlation and multiple regression analyses after normality, linearity, and homoscedasticity checks. Results: Strong positive correlations were found between hamstring strength at high angular velocities (180 degrees/s) and performance (DM FLX: r = 0.809; NDM FLX: r = 0.880). Extension strength showed moderate correlations at low velocities (60 degrees/s) (DM EXT: r = 0.677; NDM EXT: r = 0.699). Regression analysis revealed that DM FLX at 180 degrees/s and DM EXT at 60 degrees/s explained 49% of performance variance (Adj. R2 = 0.498). For NDM legs, only 180 degrees/s FLX was a significant predictor (beta = 1.468). Conclusions: High-velocity hamstring strength plays a critical role in ski mountaineering sprint performance, particularly during sudden directional changes and dynamic balance. Quadriceps strength at low velocities contributes to prolonged climbing phases. Moreover, identifying and addressing bilateral strength asymmetries may support injury prevention strategies in elite ski mountaineering athletes. These findings provide scientific support for designing training programs targeting explosive hamstring strength, bilateral symmetry, and injury risk reduction, essential for optimizing performance in the 2026 Winter Olympics sprint discipline.
Determination of the Protective Effect of Curcumin Against Tartrazine-Induced DNA Damage and HSP 70 in the Rat Brain
(Springer, 2025) Yavas, Mehmet Cihan; Tan, Fazile Canturk; Tur, Kardelen; Keskin, Cumali; Basmaci, Guldidar
Tartrazine is a widely used food dye, and children often consume large amounts of food products containing this additive due to their appealing appearance. Curcumin, on the other hand, is known for its antioxidant properties. The aim of this study was to investigate the protective effects of curcumin on brain tissue and biochemical parameters in rats exposed to short-term tartrazine administration. Male Wistar albino rats were randomly divided into five equal groups. Group 1 served as the control; Group 2 received tartrazine (10 mg/kg); Group 3 received tartrazine (100 mg/kg); Group 4 received tartrazine (10 mg/kg) along with curcumin (20 mg/kg); and Group 5 received tartrazine (100 mg/kg) along with curcumin (20 mg/kg). All substances were administered via oral gavage. The study lasted for 21 days. Serum samples were analyzed for heat shock protein 70 (HSP70) levels using the ELISA method. Brain tissues were subjected to histopathological examination and DNA damage assessment using the comet assay. Although HSP70 levels increased in the tartrazine groups, the differences were not statistically significant (p = 0.065). Partial damage was observed in the histopathological analysis. Comet assay results indicated a dose-dependent increase in DNA tail percentage with tartrazine, which was reduced following curcumin administration. These findings suggest that curcumin may alleviate tartrazine-induced damage in brain tissue and may have a regulatory effect on serum HSP70 levels in rats.
Bioactive Profile, Anticarcinogenic, Antimicrobial, Antidiabetic Effects, and in Silico Pharmacokinetic Properties of Astragalus Elatus
(Academic Press inc Elsevier Science, 2025) Ercan, Leyla; Akan, Hasan; Caliskan, Cemile Gunbegi
Because of the numerous useful components they contain, plants are significant resources that are being explored for their varied purposes in industry, food, and medicine. Recently, particularly endemic species have gained attention with the identification of their different ingredients and characteristics and the exploration of their precious features. This research assessed the endemic species Astragalus elatus's bioactive components utilizing UHPLC-Orbitrap (R)-HRMS, its antibacterial qualities utilizing the disc diffusion method, its cytotoxic impact on cervical cancer utilizing the MTT method, and its apoptosis effect by annexin V methods. Additionally, Astragalus elatus's antidiabetic activity was revealed by in silico and in vitro examinations of its inhibitory effect on the enzymes alpha-Amylase and alpha-Glucosidase. Consequently, it was discovered that A. elatus can be utilized in the treatment of cervical cancer and has effective cytotoxic and apoptotic effects on HeLa cells. Additionally, it was detected that A. elatus possesses antibacterial and anti-diabetic properties. Compared to gram-negative bacteria, A. elatus had a greater inhibitory effect on gram-positive bacteria. The pharmacokinetically significant characteristics and their tendency for chemical reactions of this plant's primary phenolic compounds were identified by utilizing DFT, molecular docking, and ADME/T.
Evaluation of Transcutaneous Bilirubin Levels in Healthy and Preeclamptic Pregnancies: a Pilot Study
(BMC, 2025) Onat, Miray; Kavak, Ebru Celik; Akcabay, Cigdem; Malkan, Zubeyde; Kaya, Tugba; Batmaz, Ibrahim; Kavak, Salih Burcin
Background Preeclampsia is a complex, multisystem obstetric disorder characterized by heterogeneous clinical manifestations, often requiring enhanced strategies for early detection, management, and risk stratification. This study aimed to evaluate potential alterations in non-invasive transcutaneous bilirubin levels measured at various maternal body sites in pregnant women diagnosed with preeclampsia. Methods A total of 86 pregnant women who delivered at our institution were enrolled and classified into three groups: healthy pregnant women (Group 1, n = 30), women with preeclampsia (Group 2, n = 30), and women with pre-eclampsia with severe features (Group 3, n = 26). In addition to routine pre-delivery laboratory assessments, transcutaneous bilirubin levels were measured at two anatomical sites-the forehead and the abdominal skin overlying the uterine fundus-using a standard bilirubinometer. Each site was measured three times, and the mean of the three readings was recorded for analysis. Complete Blood Count and biochemical blood parameters of the women were evaluated. Relevant obstetric and demographic data were also collected and recorded. Results There were no statistically significant differences among the three groups in terms of maternal age, gravidity, parity, or body mass index (p > 0.05). Similarly, total serum bilirubin levels were comparable across the groups (Group 1: 0.45 mg/dL; Group 2: 0.39 mg/dL; Group 3: 0.44 mg/dL; p > 0.05). In contrast, transcutaneous bilirubin levels were significantly elevated in Group 3 compared to Groups 1 and 2. The mean transcutaneous bilirubin values for the forehead, uterine fundus, and overall (combined sites) were as follows: Group 1-3.07 +/- 0.85, 2.35 +/- 0.97, and 2.71 +/- 0.76; Group 2-6.09 +/- 1.94, 4.94 +/- 1.64, and 5.52 +/- 1.59; Group 3-7.12 +/- 1.81, 6.12 +/- 2.25, and 6.63 +/- 1.69, respectively. All pairwise comparisons demonstrated statistically significant differences (p < 0.05). Conclusions Transcutaneous bilirubin levels were significantly elevated in women with preeclampsia, particularly among those with severe disease. As a non-invasive, rapid, and cost-effective approach, TcB measurement may function as an adjunctive tool for the initial clinical assessment and risk stratification of preeclamptic patients.
Prognostic Value of Hemoglobin, Albumin, Lymphocyte, Platelet (HALP) Scores in Patients With Non-Valvular Atrial Fibrillation: Insights From the After-2 Study
(BMC, 2025) Soner, Serdar; Guzel, Tuncay; Aktan, Adem; Kilic, Raif; Soner, Hulya Tosun; Demir, Muhammed; Ertas, Faruk
Objectives: The relationship between hemoglobin, albumin, lymphocyte, platelet (HALP) score, and various cancers and cardiovascular diseases has been tested previously. However, the relationship between HALP score and non-valvular atrial fibrillation (NVAF) has not been adequately tested. Therefore, our study aimed to investigate the relationship between HALP score and mortality in patients with NVAF. Methods: This study included 2,592 NVAF patients from 35 centers in Turkey. Patients were divided into two groups: those with HALP scores <= 58.96 (low HALP score group, 1,296 patients) and > 58.96 (high HALP score group, 1,296 patients). The primary outcome measured was all-cause mortality. Results: The mean HALP score was 66 +/- 33. Patients in the low HALP score group had higher 1- and 5-year all-cause mortality rates (1-year: 12.9% vs. 5.4%, p < 0.001; 5-year: 38.5% vs. 20.2%, p < 0.001). Cox regression analysis identified the HALP score as an independent predictor of mortality (1-year: HR = 0.987, 95% CI = 0.981-0.992, p < 0.001; 5-year: HR = 0.990, 95% CI = 0.987-0.993, p < 0.001). ROC analysis determined a HALP score 52.3 predicted 1-year mortality with 62.9% sensitivity and 62% specificity (AUC = 0.680); a score of 55 predicted 5-year mortality with 60.3% sensitivity and 62.2% specificity (AUC = 0.657). Kaplan-Meier analysis revealed increasing mortality over time in the low HALP score group (log-rank tests, 1-year = 44.86, p < 0.001; 5-year = 108.54, p < 0.001). Conclusions: The HALP score is a simple, accessible measure, and our findings suggest that lower HALP scores are associated with increased 1-year and 5-year mortality in NVAF patients. This provides a reference for clinicians assessing risk in this vulnerable population.
Integration of the Provus Discrepancy Model in Assessing Spatial Flexibility in Architectural Design Studios
(Routledge Journals, Taylor & Francis Ltd, 2025) Bekar, Irem; Kutlu, Izzettin
Architectural education studios are significant spaces for assessing spatial use by students and faculty. This study aimed to evaluate user satisfaction in architecture faculty studios using the Provus Discrepancy Model. The findings revealed that while students expressed higher satisfaction, faculty members tended to be more critical in their evaluation of the spaces. This situation indicates that the needs and perceptions of different user groups may vary in the design of educational environments. The results underscore the importance of accommodating diverse user requirements in studio configuration, rather than adopting a one-size-fits-all approach. The study provides empirical evidence to inform the enhancement of flexibility in architectural education studios, contributing to the development of spaces better aligned with evolving pedagogical and practical needs.
ModelS4Apnea: Leveraging Structured State Space Models for Efficient Sleep Apnea Detection From ECG Signals
(IOP Publishing Ltd, 2025) Zan, Hasan
Objective. Sleep apnea is a common sleep disorder associated with severe health risks, necessitating accurate and efficient detection methods. Approach. This study proposes ModelS4Apnea, a deep learning framework for sleep apnea detection from electrocardiogram (ECG) spectrograms, integrating structured state space models (S4) for temporal modeling. The framework consists of a convolutional neural network module for local feature extraction, an S4 module for capturing long-range dependencies, and a classification module for final predictions. Main results. The model was trained and evaluated on the Apnea-ECG dataset, achieving an accuracy of 0.933, an F1-score of 0.912, a sensitivity of 0.916, and a specificity of 0.944, outperforming most prior studies while maintaining computational efficiency. Significance. Compared to existing methods, ModelS4Apnea provides high classification performance with significantly fewer trainable parameters than long short-term memory-based models, reducing training time and memory consumption. The model's ability to aggregate segment-level predictions enabled perfect per-recording classification, demonstrating its robustness in diagnosing sleep apnea across entire recordings. Moreover, its low memory footprint and fast inference speed make it well-suited for wearable devices, home-based monitoring, and clinical applications, offering a scalable and efficient solution for automated sleep apnea detection. Future work may explore multi-modal data integration, real-world deployment, and further optimizations to enhance its clinical applicability and reliability.
Synthesis and Characterization of Fe3O4/MethylCellulose@Pb as a Heterogeneous Fenton-Like Catalyst for Photodegradation of Different Dyes
(Elsevier, 2025) Umaz, Adil; Ece, Mehmet Sakir
With the development of industry, serious pollution has emerged in water resources. This poses serious problems for the health of living things and the environment. To deliver a sustainable future, producing effective, low-cost, and reusable photocatalysts in wastewater treatment is important. In this study, Fe3O4/MetCel@Pb photo-catalysts were synthesized for the first time. The properties of Fe3O4/MetCel@Pb photocatalysts were characterized by Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Brunauer-Emmett-Teller (BET), Ultraviolet-Visible Spectrophotometry (UV-Vis), Vibrating Sample Magnetometry (VSM), Electron Spin Resonance (ESR), Scanning Electron Microscopy (SEM), Transmission Electron Microscope (TEM), and X-ray Photoelectron Spectroscopy (XPS). The average particle size, surface area, band gap energy, saturation magnetization, resonance magnetic field, and g-factor values of the Fe3O4/MetCel@Pb photocatalysts measured as 63.88 nm, 40.59 m2 g-1, 5.71 eV, 24.80 emu g-1, 390.15 mT, and 1.731, respectively. XPS analysis showed signals confirming strong C-O bonds, Fe-O bonds, Fe2+, and Fe3+ at binding energies of 286.04, 528.00, 711.39, and 723.84 eV, respectively. Also, Fe3O4/MetCel@Pb photocatalysts were used for the first time in the dye degradation. The degradation of methylene blue (MB), methyl orange (MO), phenol red (PR), alizarin yellow (AY), and bromthymol blue (BTB) dyes under ultraviolet-visible light for 30 min was determined as 100 %, 96.76 %, 94.51 %, 80.81 %, and 71.93 %, respectively. In the reusability study, Fe3O4/MetCel@Pb photo-catalysts showed a reduction rate of 1.70 % compared to the first cycle even after the fourth cycle. The stability and repeated reusability of Fe3O4/MetCel@Pb photocatalysts without deformation were realized. Application of Fe3O4/MetCel@Pb photocatalysts in real dyed water samples (even in mixed matrix samples) showed over 90 % dye degradation efficiency. This confirms that the photocatalyst is an effective catalyst in dye degradation. Fe3O4/MetCel@Pb photocatalysts, which are economical, easy to prepare, and stable, will be an effective option for the removal of industrial waste paints (cationic and anionic dye) from aqueous systems. In addition, using these photocatalysts will provide ease of process, as well as time and cost savings.
An Effort To Understand Parents' Media Mediation Roles and Early Childhood Children’s Digital Game Addiction Tendency: a Descriptive Correlational Survey Study
(Springer, 2024) Calhan, Ceren; Goksu, Idris
This study aims to determine whether parents' media mediation roles are related to their early childhood children's digital game addiction tendencies. In addition, it examines whether these variables are related to the child's and parent's digital device usage habits and whether they differ according to various sociodemographic variables and digital device usage habits. In this context, we collected data from 433 parents (mother = 336, father = 97) with children aged 3-6. We analyzed the data using correlation analysis, one-way ANOVA, and t-test. Active-supportive, restrictive-supportive, active-limiting, restrictive-limiting, and active-interpreter roles of parents were negatively related to children's digital game addiction tendencies. In addition, parents' and children's digital device screen time was negatively associated with parents' media mediation roles and positively with children's digital game addiction tendencies. Mothers found their children more likely to have digital game addiction than fathers. Children of parents who play digital games have higher digital game addiction than those of parents who do not play, male children than female, children who have their own digital devices than those who do not, and children who only watch YouTube videos than those who only watch television channels for kids. Finally, we observed that mothers are more active in media mediation roles than fathers and that parents behave more restrictive toward their daughters.

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