Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Uzun, Sevda(67)
- Merdan, Mehmet(59)
- Duran, Celal(49)
- Ozdes, Duygu(46)
- Kaygusuz, Abdullah(45)
- Demir, Selim(37)
- Turan, Ibrahim(37)
- Karsli, Orhan(36)
- Öztürk, Serkan(35)
- Dokuz, Abdurrahman(34)
- Araz, Onur(32)
- Kandemir, Raif(31)
- Kulakaç, Nurşen(29)
- Sipahi, Ferkan(29)
- Arslan, Mehmet(27)
- Baltaci, Cemalettin(27)
- Baltacı, Cemalettin(27)
- Kurt, Kemal(27)
- Topal, Fevzi(27)
- Gücer, Mehmet Ali(25)
- Peker, Iskender(25)
- Aydin, Faruk(24)
- Bayrakdaroglu, Serdar(24)
- Maden, Nafiz(24)
- Ozturk, Samet(24)
- Vural, Alaaddin(24)
- Yolcu, Halil(24)
- Yücel, Cem(24)
- Aliyazicioglu, Yuksel(23)
- Kankal, Murat(23)
- Reis, Hatice Catal(23)
- Ürkek, Bayram(23)
- Günen, Mehmet Akif(22)
- Kurnaz, Muammer(22)
- Topal, Meryem(22)
- Karimullah, Suud Sarim(21)
- Uysal, Ibrahim(21)
- Ashyralyyev, Charyyar(20)
- Aydin, Aydanur(20)
- Bayraktar, Alemdar(20)
Yayınlar
- MakaleAçık Erişim2026Scopus SJRQ1The effect of eHealth-based guided self help interventions for binge eating disorder : a meta-analysis of randomized controlled trials
Tuncer, Gülsüm Zekiye; Tuncer, Metin
With rapid technological advancements, eHealth-based guided self-help interventions have become accessible, flexible, cost-effective, and stigma-reducing treatment options for binge eating disorder (BED). This meta-analysis evaluated the effectiveness of these interventions in individuals diagnosed with BED or showing BED symptoms, based on eight randomized controlled trials with 1,575 participants. Intervention length varied between a single session to four months. Six studies focused solely on web-based guided self-help interventions, one study implemented a hybrid approach combining face-to-face and online components, and another study employed two distinct online guided self-help methods. The interventions included psychoeducational modules, therapist feedback, online behavior monitoring, and self-assessments. eHealth-based guided self-help significantly reduced binge eating psychopathology (SMD: 0.53; 95% CI: 0.20–0.86) and objective binge eating (OBE) days (SMD: 0.49; 95% CI: 0.12–0.85) compared to controls. These interventions offer effective solutions for individuals facing barriers to traditional treatment access.
AtıfScopus2WoS2
İncele - MakaleYalnız künye2026Scopus SJRQ1Efficient ensemble learning with multi-scale fusion based deep neural network for skin lesion classification
Reis, Hatice Catal; Turk, Veysel
Melanoma, a type of skin cancer, is a severe skin cancer that is critical for early diagnosis but difficult to detect. Deep learning is promising in melanoma diagnosis because it can automatically analyze visual features and perform end-to-end learning. However, achieving the optimum balance between performance and computational efficiency for the effective use of these models in clinical applications is an important research topic. In this study, three innovative methods are proposed for skin cancer detection: PADSCNet, P-DEFF, and M–DEFF. The PADSCNet is an effective neural network developed with CNN and multi-head attention techniques, designed with fusion methods, and stands out with its minimum number of parameters despite being quite deep. The P-DEFF and M–DEFF are based on ensemble learning techniques; P-DEFF was developed with a single deep learning model, and M–DEFF was developed with multiple pre-trained deep learning models. The proposed approaches were tested on the Skin Cancer: Malignant vs. Benign dataset, which was pre-processed using image enhancement techniques. According to the experimental results, PADSCNet achieved accuracy rates of 88.12 %, P-DEFF 93.75 %, and M–DEFF 95.00 %. In additional experiments conducted with the PADSCNet model, 93.12 % accuracy rates were achieved in the CNN for Melanoma Detection Dataset, and 95.00 % accuracy rates were achieved in the PH2 dataset. These findings show that the proposed methods are effective in skin cancer detection and can achieve successful results in clinical applications.
AtıfScopus4WoS3OpenAlex4İncele - MakaleAçık Erişim2026Scopus SJRQ1Electric field–induced inflammatory and angiogenic responses in rat female reproductive tissues: evidence for early extracellular matrix remodeling
Ozmen, Ozlem; Asci, Halil; Kolay, Oznur; Selcuk, Elif Nur; Yuksel, Duygu; Comlekci, Selcuk; Karabacak, Pinar
High-intensity electric fields (EFs) are increasingly encountered in occupational and environmental settings, raising concerns regarding their potential biological effects on hormonally responsive organs. However, the cellular and molecular responses of female reproductive tissues to short-term exposure to high-voltage EFs remain insufficiently characterized. This study aims to investigate EF-associated histopathological and immunohistochemical alterations in major female reproductive organs. Forty adult female Wistar albino rats were randomly assigned to five experimental groups (n = 8 per group): a control group (0 min) and four EF-exposed groups subjected to a nominal electric field intensity of 10 kV/m EF for 1, 5, 15, or 30 min using a custom-designed parallel-plate exposure system. The field intensity was verified at predefined measurement points within the exposure setup. Ovaries, uterus, and uterine tubes were examined using hematoxylin–eosin staining and semi-quantitative histopathological scoring. Immunohistochemical analyses were performed to evaluate the expression of tumor necrosis factor-α (TNF-α), vascular endothelial growth factor (VEGF), and osteonectin as markers of inflammation, angiogenesis, and extracellular matrix remodeling. Exposure to the electric field was associated with time-dependent histopathological alterations, including tissue edema, hemorrhage, epithelial degeneration, and leukocyte infiltration. The most pronounced ovarian and uterine changes were observed in the 30-min exposure group, whereas the uterine tubes exhibited comparatively milder structural alterations. Immunohistochemical analysis demonstrated increased TNF-α and VEGF expression in higher-exposure groups, suggesting activation of inflammatory and angiogenic pathways. Osteonectin expression was elevated in all examined reproductive tissues and was also detected in regions without overt morphological damage, indicating its potential sensitivity to early tissue stress responses associated with EF exposure. Significant correlations were observed between histopathological injury scores and immunohistochemical marker expression levels. Overall, short-term exposure to high-intensity electric field was associated with inflammatory signaling, angiogenic responses, and extracellular matrix remodeling in female reproductive tissues in this experimental model. These findings provide histological and immunohistochemical evidence of tissue responses to EF exposure and underscore the need for further studies incorporating comprehensive exposure characterization and additional molecular endpoints to better define potential reproductive health implications to high-voltage electric fields.
AtıfScopus2WoS2OpenAlex2İncele - MakaleYalnız künye2026Scopus SJRQ1Paranormal Health Beliefs in Travel Motivation and Experiences: The Case of Gırnavaz Jinn
Şimşek Evren, Emine
This study was conducted to determine the travel motivations and experiences of paranormal health tourists. In the study, the Gırnavaz Mound in Mardin/Türkiye, where the tomb of the leader of the first Muslim jinn is located, was analyzed. The data were collected with semi-structured interviews conducted with 15 visitors and 2 religious officials. Four main themes and six subthemes were identified during the manual content analysis process. The main themes were named “Paranormal Story: Healing Jinn,” “Motivation for Paranormal Health Tourism,” “Paranormal Health Tourism Experiences,” and “Sense of Healing: Placebo.” Findings reveal that paranormal health tourists are motivated by feelings of helplessness and belief. Their experiences are shaped by ritual participation and shared emotional exchanges with others. The peak experience—encountering a jinn leader in a dream—can be disrupted by environmental factors. Those who reach the peak experience feel a sense of healing that can be attributed to the placebo.
- MakaleAçık Erişim2026Scopus SJRQ4Determining the Factors Affecting Football Fans' Satisfaction with Video Assistant Referee (VAR) Technology; [Futbol Taraftarlarının Video Yardımcı Hakem (VAR)’e Yönelik Memnuniyetlerini Etkileyen Faktörlerin Belirlenmesi]
Avci, İbrahim; Ayik, Öznur
Video Assistant Referee (VAR) technology has been introduced in the sports industry as a decision support system designed to assist referees in making the correct decisions when overseeing a sporting event. In Turkey, VAR technology has been deployed to lessen controversies in football matches, but it has not completely eliminated them. As a result, it is crucial to establish whether fans, a key stakeholder in the sports sector, are satisfied with VAR technology. In this context, the study aims to investigate the effects of football fans' perceived value and identification with VAR technology on their satisfaction with it. Furthermore, the mediating role of attitudes towards the technology and the moderating role of knowledge about VAR technology will also be examined. The study used the snowball sampling method, and data were obtained via an online survey, with 411 fans participating over the data collection period. Using the fan data, Structural Equation Modeling was performed using the AMOS tool, and the study hypotheses were tested. The research revealed that identification and perceived value of VAR technology have a positive effect on satisfaction with this technology, with attitude toward technology acting as a mediator. The level of knowledge about VAR technology has a moderating effect in the relationship between satisfaction and perceived value. These findings have practical and theoretical implications for both the sports sector and the academic discipline.
- MakaleAçık Erişim2026Scopus SJRQ2Immersive Virtual Reality as a Tool to Reduce Anxiety and Distress in Patients With Breast Cancer During Radiotherapy
Aydin, Aydanur; Uslu, Gonca Hanedan; Gursoy, Ayla
Background: – Virtual reality (VR) can be an innovative method to reduce patients’ anxiety and support their psychological health. Objective: – To evaluate the anxiety and distress-reducing effects of using immersive VR (IVR) intervention in breast cancer patients undergoing radiotherapy (RT). Methods: – Sixty breast cancer patients undergoing RT were recruited for the quasi-experimental study. The participants were divided into the intervention group and the control group. Anxiety and distress, the primary outcome measures, were assessed before the first and after the last radiation session using reliable scales. Patients in the intervention group watched a tranquil forest view with birdsong and meditation music during each RT session using IVR goggles. Results: – Both group patients had similar levels of anxiety and distress before the start of RT. After the intervention, the anxiety and distress of the patients in the intervention group decreased significantly compared with the control group. In addition, treatment-related comfort was higher in the intervention group. Overall, the majority of patients in the intervention group expressed a high level of satisfaction with this IVR experience. Conclusion: – Patients who experienced an IVR intervention showed less anxiety and distress, greater comfort, and higher satisfaction. This innovative technique can be used as a practical solution to alleviate anxiety and distress in various healthcare settings. Implications for Practice: – Immersive VR can be used in treatment and care interventions that cause anxiety and distress in oncology patients.
AtıfScopus6WoS5OpenAlex3İncele - MakaleAçık Erişim2026Scopus SJRQ1Impact of sprouting pretreatment on physicochemical properties and in vitro digestibility of buckwheat milk
Tunç, Merve Tuğçe; Yılmaz, Fırat; Akdoğan, Arda; Atalar, İlyas; Odabaş, Halil İbrahim
BACKGROUND: Buckwheat is a strategic raw material for plant-based milk production due to its gluten-free nature and rich bioactive profile. However, antinutritional factors and starch structure limit the nutritional quality and technological properties of such beverages. This study aims to investigate the effects of sprouting pretreatment (0, 24, 48, and 72 h) on the physicochemical properties, rheological behavior, phytic acid content, and in vitro protein/phenolics digestibility of buckwheat milk. RESULTS: As the sprouting duration increased, the viscosity of buckwheat milk decreased from 31.42 to 15.42 mPa s (at 72 h) due to the enzymatic hydrolysis of starch and proteins. Rheological analysis revealed that all samples exhibited weak gel behavior. Color analysis showed a decrease in lightness (L*) while redness (a*) and yellowness (b*) values significantly increased with sprouting. The results showed that sprouting significantly reduced phytic acid content, reaching its minimum at 72 h. The highest in vitro protein digestibility was observed at 24 h of sprouting, after which a relative decline occurred due to the formation of protein–polyphenol complexes and metabolic amino acid utilization. Furthermore, total phenolic content, flavonoid content, and antioxidant capacities measured after in vitro digestion were substantially higher in sprouted samples, especially at 48 and 72 h, than in the control. CONCLUSION: The results indicate that a sprouting duration of 48 h represents an optimal balance for the physical stability and nutritional enhancement of buckwheat milk. At this stage, significant increases in bioaccessible phenolics were achieved while maintaining a stable colloidal structure.
- MakaleYalnız künye2026Scopus SJRQ3Determinants of sleep quality and fatigue in patients undergoing hemodialysis
Kazak Salti, Aysun; Topali, Hasret; Türkmen, Osman Oğulcan
Aim: This research aimed to evaluate sleep quality and fatigue among individuals undergoing hemodialysis and to explore the determinants affecting these variables. Methods: This observational investigation was carried out among 78 who were regularly receiving hemodialysis therapy. The research was carried out between May and October 2025 in three different public hospitals among individuals undergoing hemodialysis treatment. Data were gathered using the Patient Information Form (PIF), the Fatigue Severity Scale (FSS), and the Pittsburgh Sleep Quality Index (PSQI). Results: The mean score of the hemodialysis patients on the FSS is 4.97 ± 1.11, and the mean PSQI value is 7.76 ± 3.64. A moderately positive and statistically noteworthy relation was observed between the PSQI and FSS scores. Additionally, a low negative meaningful correlation was seen between ferritin levels and the FSS scores, as well as between calcium levels and the PSQI scores. The use of medications related to chronic disease and the PSQI scores were identified as significant predictors of the FSS scores. Conclusion: Fatigue and sleep quality in individuals receiving hemodialysis treatment are related to each other, as well as to biochemical balance and treatment adherence.
- MakaleAçık Erişim2026Scopus SJRQ1Severity-Based Mapping of Land-Subsidence Hazard Zones and Critical Hotspots Using SBAS-InSAR and Spatial Statistics: The Konya Metropolitan Area, Turkey
Yalvac, Sefa; Bjelotomić Oršulić, Olga
Land subsidence induced by excessive groundwater withdrawal has become one of the most significant geohazards affecting the Konya Closed Basin, Turkey. Although previous studies have successfully monitored ground deformation using geodetic and remote sensing techniques, limited attention has been devoted to transforming deformation measurements into quantitative, spatially classified hazard information. This study presents a severity-based framework for delineating land-subsidence hazard zones and critical hotspots in the Konya metropolitan area by integrating SBAS-InSAR observations and spatial statistical analyses. A total of 82 Sentinel-1 SAR acquisitions (41 ascending and 41 descending images) acquired between January 2023 and May 2026 were processed using the Small Baseline Subset (SBAS) technique. Ascending and descending line-of-sight deformation measurements were combined to derive vertical deformation rates, which were integrated with spatial statistical indicators and a composite severity index to quantify deformation clustering and classify subsidence severity. Hazard zones and critical hotspot areas were delineated through severity-based classification and spatial connectivity analyses. The results reveal a continuous north–south-oriented subsidence deformation belt extending across the eastern Konya. Maximum vertical subsidence rates exceeded 230 mm/yr, while spatial statistical analyses confirmed strongly clustered and statistically significant deformation patterns. Severity-based hazard zonation identified four hazard classes and a continuous high-hazard corridor. Clustering analysis further identified a dominant hotspot belt covering approximately 160 km2, with mean subsidence rates of approximately 142 mm/yr. A sensitivity analysis of the composite severity index weighting scheme, the spatial statistical neighborhood distance, the DBSCAN clustering parameters, and the number of Jenks severity classes confirmed that the resulting hazard zones and critical hotspot belt are robust to reasonable parameter variations. The findings demonstrate that land subsidence in Konya is organized as a spatially continuous regional-scale deformation system rather than a collection of isolated subsidence centers. The proposed framework transforms InSAR-derived deformation measurements into quantitative, decision-support hazard information and provides a transferable methodology for land-subsidence hazard assessment in groundwater-stressed urban environments.
- MakaleAçık Erişim2026Scopus SJRQ1Characterization and Bioactive Properties of Exopolysaccharides from Pediococcus ethanolidurans Isolated from Kırçan (Smilax excelsa L.) Pickles
Karatas, Seyda Merve; Genc, Berna; Tunc, Merve Tugce
In this study, the characterization of some bioactive content of exopolysaccharide (EPS) extracted from Pediococcus ethanolidurans isolated with Smilax excelsa L. from conventionally produced pickles were investigated. Background: Although this study is the main study involving the characterization of EPS obtained from Pediococcus ethanolidurans, it is important because it has determined a natural polysaccharide that can be used in different fields in the industry. According to the obtained results, sugar analysis by GC-MS revealed that EPS consisted of glucose (7.59%), mannose (41.96%), fructose (16.98%), arabinose (3.15%) and rhamnose (30.30%). From the thermal behavior determined by differential scanning calorimetry (DSC), it was concluded that it should not be heated close to 250 °C. At the same time, according to the thermogram obtained as a result of X-ray diffraction (XRD) analysis, it was found to have a crystalline structure. EPS, which reached 73.844% efficiency, showed antibacterial activity against Listeria monocytogenes, Staphylococcus aureus and Escherichia coli, while 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) scavenging activity was detected at 0.24 mM. It also has remarkable results, seen in cytotoxicity analysis against healthy HT-29 cells, demonstrating that it has proliferative activity as high as %125 In short, Pediococcus ethanolidurans was found to be a novel EPS producer with impressive properties.
AtıfScopus1WoS1OpenAlex1İncele - MakaleAçık Erişim2026Scopus SJRQ3The Non-Newtonian Differential Operators Associated With Iterated Generators
Dedeturk, Mutlu; Yalcin, Numan
This paper investigates non-Newtonian differentiation associated with integer iterates of generator functions. For (Formula presented.), we consider the derivative operators (Formula presented.) and derive explicit first-order representation, transformation, and factorization formulas that relate operators corresponding to different iteration levels. The construction is then extended to higher-order derivatives, where the resulting operators are represented through conjugation with the classical derivative operator Dr. Faà di Bruno’s formula and exponential partial Bell polynomials are used to obtain explicit higher-order expressions. Several examples involving exponential, double-exponential, and quadratic generators illustrate how the general results specialize to familiar non-Newtonian calculi. The results provide a unified treatment of non-Newtonian differentiation based on iterated generators and clarify its relationship with classical differentiation.
- MakaleAçık Erişim2026Scopus SJRQ3A concise approach for interpreting the removal kinetic of 2,4-D by carbonized peanut shell
Gülen, Jale; Karpuz, Ömer
The present study displays the adsorption characteristics of dichloro phenoxy acetic acid (2.4-D) on biomass-based peanut shell (BPC) carbon. Experiments were conducted by varying some parameters like concentration, pH, and temperature. 2,4-D adsorption uptake was increased from 0.504 to 3.826 mg/g with rising concentration from 1 µg/mL to 5 µg/mL and giving the highest adsorption at acidic pH. 1.605 mg/g uptake was obtained at pH 2.7. The data were in good harmony with Langmuir, Freundlic, Dubinin-Radushkevich (DR), and Generalized isotherms. The monolayer adsorption capacity was found as 42.62 ± 0.3257 mg/g. The kinetic was governed by the first-order kinetic. Various kinetic models were employed and particle diffusion was predominated for 2,4-D adsorption. Thermodynamics were explained in detail. The mean adsorption energy (E) was shown by the physical sorption, and Gibbs energy was the indicator of the spontaneous nature of the adsorption. Standard enthalpy, entropy, and Gibbs values were recorded as 5.064 ± 139.84, 18.849 ± 0.148, and 0,7414 ± 0.0943 J/mol. The results showed that BPC was an eco-friendly and cost-effective material.
AtıfScopus1WoS2OpenAlex3İncele - MakaleAçık Erişim2026Scopus SJRQ3Spinal Manipulation, Dynamic Neuromuscular Stabilization, and Their Combination in Chronic Non-Specific Low Back Pain: A Four-Group Randomized Clinical Trial
Alak, İsmail; Hatik, Sefa Haktan; Büyükkirli, İlker Can; Aydin, Emine Busra
Spinal manipulation (SM) and stabilization-focused exercise are commonly used in chronic low back pain, yet evidence on their combined effects is limited. This randomized controlled trial compared SM and dynamic neuromuscular stabilization (DNS), alone or combined, in chronic non-specific low back pain. Forty-eight participants were randomized (1:1:1:1; n=12/group) using a computer-generated sequence with opaque sealed-envelope concealment to Control, SM, DNS, or SM+DNS (SMDNS). Interventions (except Control) were delivered twice weekly for 4 weeks. Outcomes (VAS, ODI, RMDQ, DNS-HS, PostureScreen) were assessed at baseline and follow-up. Assessor blinding was not feasible (treating physiotherapist also assessed outcomes); analyses used coded group labels.Within-group analyses showed significant improvements in most outcomes (p<0.05), except for postural deviation in the SM group and frontal postural deviation in the DNS and SMDNS groups. Between-group comparisons indicated greater early pain reduction with SMDNS at the second assessment (p<0.05). By week 4, pain decreased most in DNS and SMDNS (VAS Δ=−3), while SM showed Δ=−2 and Control showed no change. Disability improved most in DNS/SMDNS (ODI Δ=−13.39/−15.38; RMDQ Δ=−5.24/−5.77). Week-4 effect sizes favored SMDNS over Control and SM for key outcomes (VAS D2 g=2.07 vs Control, 1.24 vs SM; ODI PC2 g=1.73 vs Control, 1.05 vs SM; RMDQ PC2 g=1.34 vs Control, 0.23 vs SM). Overall, adding SM to DNS may enhance early pain relief; the magnitude of between-group differences (effect sizes with 95% CIs) supports interpretation, while clinical relevance should be considered alongside established MCIDs and confirmed in larger trials with longer follow-up.
- MakaleAçık Erişim2026Scopus SJRQ4[Policing the Postcolonial Family: Rethinking Hanif Kureishi’s “My Son the Fanatic” through F. Fanon and D. Bigo]
Yalçın, Elif Güvendi
[Abstract] This article offers a critical re-evaluation of Hanif Kureishi’s short story “My Son the Fanatic” at the intersection of Frantz Fanon’s postcolonial psychoanalysis and Didier Bigo’s security studies. Moving beyond conventional readings that center generational conflict, religious radicalism, or immigrant assimilation, the study foregrounds surveillance as a constitutive force shaping postcolonial subjectivity within diasporic family dynamics. It is argued that Kureishi’s narrative dramatizes the internalization of state logics of suspicion and control, whereby the immigrant father, Parvez, becomes both the subject and the agent of a dispersed surveillance apparatus. Drawing on Bigo’s concept of the ban-opticon and its emphasis on anticipatory governance and affective regulation, the article examines how fear of deviance displaces paternal care with a mode of domestic policing. Simultaneously, Fanon’s notion of epidermalization elucidates how the colonized subject internalizes visibility as a site of control, resulting in a fractured self constantly navigating racialized gazes and cultural expectations. This work is licensed under the Creative Commons Attribution 4.0 International licence (CC BY 4.0).
- MakaleAçık Erişim2026Scopus SJRQ3A Qualitative Research on The Applicability of Value-Based Payment Method in The Health System of Türkiye; [Değer Bazlı Geri Ödeme Yönteminin Türkiye Sağlık Sisteminde Uygulanabilirliği Üzerine Nitel Bir Araştırma]
Tekinarslan, Merve; Kaya, Sıdıka
This study explores value-based payment reforms in healthcare, aiming to enhance productivity, efficiency, and quality of care by shifting the focus from quantity to value. Using a grounded theory approach and the Delphi technique, 28 healthcare stakeholders were selected through purposive sampling. Data were analysed with MAXQDA 2020, and value parameters were ranked by importance. Findings define value in healthcare as "a quality service," with participants supporting value-based repayment despite some limitations. Fifteen key value measurement parameters were identified. The study recommends addressing resistance to change and implementing necessary revisions for Türkiye to adopt this model successfully.
- MakaleYalnız künye2026Scopus SJRQ2A comprehensive optimization framework for indoor laser-based optical wireless communication using gimbal-steered transmitters
Başer, Oğuzhan; Küçük, Mehmet Ali; Türk, Kadir
The growing demand for high-speed wireless communication, driven by data-intensive applications such as high-definition video streaming and augmented reality, has highlighted the limitations of the Radio Frequency (RF) spectrum. Optical Wireless Communication (OWC) has emerged as a promising complementary technology, offering wide bandwidth, license-free operation, high security, and immunity to electromagnetic interference. Among OWC transmitters, Laser Diodes (LDs) provide high modulation bandwidth and narrow divergence angles, enabling data rates of several tens of gigabits per second. However, the narrow beam of LDs requires precise Line-of-Sight (LoS) alignment, making beam steering essential. This study focuses on optimizing the positioning and orientation of gimbal- or galvo-based LD transmitters in indoor OWC systems to minimize outage probability under LoS constraints and physical obstructions. An outage probability model considering room geometry and device field-of-view angles is developed and analyzed for three scenarios within a 7 × 5 m room: an empty environment, a room with a 1 × 1 m column, and a user-occupancy-aware environment. The complex optimization problem is solved using multiple meta-heuristic algorithms, including Particle Swarm Optimization (PSO), L-SHADE, and Stochastic Fractal Search with Fitness-Distance Balance (FDB-SFS). The obtained results are subsequently validated through grid search approach. The proposed approach achieves significant outage reduction, demonstrating that incorporating obstacle and user-distribution information enables efficient coverage with fewer terminals, reaching outage probabilities as low as 0.4%.
AtıfScopus1İncele - MakaleAçık Erişim2026Scopus SJRQ1Investigation of the Antioxidant, Antibacterial, and Food Safety Potential of Silver and Copper Nanoparticles Green Synthesized Using Pointed Cherry Laurel (Prunus laurocerasus L.) Extract
Kobya, Havva Nur; Gül, Abdulkadir; Karpuz, Ömer; Baltacı, Cemalettin
This study reports the green synthesis of silver (PFAgNPs) and copper (PFCuNPs) nanoparticles using an aqueous extract of pointed cherry laurel (Prunus laurocerasus L.) fruit (PF-E) and explores their applicability in food safety. The NPs were characterized via UV–Vis spectroscopy, FT-IR, XRD, SEM, EDX, and TEM confirming their successful formation and morphology. Total phenolic content (TPC), flavonoid content (TFC), and antioxidant capacity (TAC) were measured for both PF-E and the synthesized NPs. While PFCuNPs exhibited higher TPC, PFAgNPs showed superior TFC and TAC. Notably, antioxidant assays (DPPH, ABTS, FRAP) indicated stronger radical scavenging activity for PFCuNPs. Antibacterial tests against Escherichia coli, Enterococcus faecalis, Staphylococcus aureus, and Pseudomonas aeruginosa revealed broad-spectrum activity of PFAgNPs, with the highest inhibition against E. coli (19.4 ± 0.3 mm), whereas PFCuNPs showed dose-dependent efficacy, strongest against E. faecalis (9.6 ± 0.2 mm). LC–MS/MS analysis of the PF-E extract revealed quinic acid (63.42 mg/g), chlorogenic acid (2.38 mg/g), protocatechuic acid (0.07 mg/g), protocatechuic aldehyde (0.04 mg/g), hesperidin (0.03 mg/g), and naringenin (0.02 mg/g) as major components. The adsorption efficiencies of the synthesized PFAgNPs and PFCuNPs were evaluated against the toxic food contaminants patulin and HMF using both standard aqueous solutions and real food systems (apple juice). In standard aqueous solutions, PFAgNPs achieved removal efficiencies of 70.96% for patulin and 52.22% for HMF, while PFCuNPs showed 61.08% and 36.38%, respectively, at 5 g/L after 240 min. In real food systems, the adsorption efficiencies decreased, with PFAgNPs and PFCuNPs removing 34.24% and 32.90% of patulin, and 39.09% and 31.87% of HMF, respectively. The adsorption kinetics of HMF and patulin onto PFCuNP and PFAgNP were found to conform to both the pseudo-first-order and pseudo-second-order kinetic models for aqueous solutions as well as real samples. These findings confirm that the biosynthesized NPs offer dual functionality as antibacterial agents and toxin adsorbents, presenting a green, sustainable approach to food safety enhancement.
AtıfScopus7WoS7OpenAlex7İncele - MakaleAçık Erişim2026Scopus SJRQ1Psychological dynamics shaping performance perception in athletes: the influence of coaching behaviours, psychological safety, self-efficacy, and resilience
Sakallı, Derya; Şenel, Ender; Menteş, Görkem; Salman, Kaan
This study aimed to examine how athletes’ perceptions of supportive and controlling coaching behaviours influence their perceived performance through the mediating effects of psychological safety, self-efficacy, and psychological resilience. Unlike previous work, this study integrates these three psychological factors into a single structural model, offering a comprehensive understanding of the mechanisms linking coaching behaviours to performance perceptions. Data were collected from 369 Turkish athletes representing different sports and competitive levels using validated self-report questionnaires. Structural equation modelling (SEM) was employed to analyse the direct and indirect relationships among variables. The results revealed that supportive coaching behaviours positively predicted perceived performance through increased psychological safety, self-efficacy, and resilience, whereas controlling coaching behaviours had the opposite effect. Among the mediators, self-efficacy emerged as the strongest predictor of performance perception. These findings provide novel evidence that psychological safety and resilience strengthen this relationship by fostering adaptive and confident athlete functioning. The study contributes to the literature by demonstrating the integrative role of psychological resources within the frameworks of self-determination and social cognitive theories. Practically, it underscores the importance of supportive coaching practices that enhance psychological resources essential for sustained motivation, well-being, and optimal performance.
AtıfScopus2WoS2OpenAlex6İncele - MakaleAçık Erişim2026Scopus SJRQ4The Cybernetics of Gomi: Transhumanism, Materiality, and the Expulsion of the Subject in William Gibson’s The Winter Market (1986)
Uruk, Ahmet
Referred to by Julian Huxley in his 1957 work New Bottles for New Wine, transhumanism champions the use of science and technology to transcend human biological limits and attain a “posthuman” state. While science fiction frequently familiarizes audiences with these speculative dimensions, William Gibson’s short story The Winter Market (1986) exposes the dehumanizing impacts of technological immortality and mind uploading in a cyberpunk world. Rather than presenting a seamless techno-utopian future, Gibson’s narrative centers on the concept of gomi—Japanese for trash or junk—to illustrate the literal and psychological expulsion of the human subject. Therefore, this paper argues that The Winter Market uses the material reality of gomi as its core structural and thematic focus, exposing how advanced capitalism and cybernetic technology reduce the organic body, human experience, and artistic expression to marketable, discarded commodities. Through a close reading of Gibson’s distinct language and narrative form, this study, ultimately, interrogates the trade-offs of technological transcendence, demonstrating how the pursuit of disembodied immortality culminates in alienation and the fragmentation of authentic identity.
- MakaleAçık Erişim2026Scopus SJRQ2Monte Carlo calculation of geometry-dependent true coincidence summing correction factors for the gamma-rays of 214Bi in HPGe detectors
Çelik, Necati
True coincidence summing (TCS) effects in gamma-ray spectrometry introduce significant systematic uncertainties in activity determinations, particularly for radionuclides with complex decay schemes such as 214Bi. This study presents a comprehensive Monte Carlo investigation of TCS correction factors (CFs) for seven major gamma-ray lines of 214Bi. The primary contribution of this study is the systematic decoupling of detector geometry effects: nine distinct HPGe detector configurations were simulated with varying crystal dimensions, dead layers, and hole geometries, followed by an isolated analysis of crystal radius versus crystal length contributions for both point and extended source geometries. The decay scheme of 214Bi was meticulously modeled using Nucleide 2000 data, incorporating all beta branches, gamma transitions, internal conversion coefficients, and cascade probabilities to ensure high-fidelity representation of the decay scheme. Results demonstrate that crystal radius exerts a substantially stronger influence on TCS CFs than crystal length, with point source values at 609.3 keV increasing by 18.2% across the radius range of 2.1–4.5 cm, compared to only 3.7% variation across the length range of 3–11 cm. Extended source geometries reduce TCS CFs by 5%–11% compared to point sources across all configurations, highlighting the mitigating effect of distributed sources. Energy-dependent behavior is also evident: the 609.3 keV line exhibits strong summing-in (CF > 1.3 for large detectors), while the 1377.7 keV line shows dominant summing-out (CF < 0.86). These findings provide gamma-ray spectrometrists with insight into the relative importance of detector dimensions for TCS effects, suggesting that crystal radius is the primary geometric parameter influencing coincidence summing corrections. The observed trends illustrate how TCS corrections vary with detector dimensions, offering spectrometrists a basis for understanding the relative sensitivity of these corrections to different geometric parameters.
