Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Dertli, Enes(117)
- Kaya, Yunus(51)
- Şahin, Engin(48)
- İspirli, Hümeyra(47)
- Özen, Soner(46)
- Şenay, Volkan(45)
- Pat, Suat(44)
- Can, Zehra(39)
- Bayraktar, Bülent(37)
- Bayram, Sinan(37)
- Korkmaz, Şadan(36)
- Cuce, Erdem(35)
- Ecem Bayram, Nesrin(33)
- Kutlu, Naciye(33)
- Yilmaz, Mustafa Tahsin(32)
- Artar, Musa(31)
- Ertugrul, Mehmet(30)
- Öner, Erdal(30)
- Ayata, Ümit(29)
- Hasar, Ugur Cem(29)
- Esmer, Yusuf(28)
- Mercan, Emin(27)
- Cuce, Pinar Mert(26)
- Özdemir, Akın(25)
- Çolak, Murat(24)
- Bayram, Ozkan(23)
- Kamiloğlu, Aybike(23)
- Sert, Durmuş(22)
- Ayazoglu, Rabil(21)
- Abdioglu, Murat(20)
- Bayram, Nesrin Ecem(20)
- Kadakal, Mahir(20)
- Kara, Yakup(20)
- Kizil, Hamit Emre(20)
- Tozlu, Alperen(20)
- Birinci, Ahmet(19)
- Gerçek, Yusuf Can(19)
- Battal, Fetullah(18)
- Dirican, Ebubekir(18)
- Ergün, Mustafa(18)
Yayınlar
- MakaleYalnız künye2025Scopus SJRQ3Numerical Investigation of EDS Maglev Systems in Terms of Performance and Cost for Different PMs-Aluminum Rail Arrangements
Mollahasanoglu, Hakki; Abdioglu, Murat; Ozturk, Ufuk Kemal; Okumus, Halil Ibrahim; Coskun, Elvan; Gencer, Ali
Permanent-magnet electro-dynamic suspension (PMs-EDS) maglev systems are shaping the future of modern transport by providing high-speed, energy-efficient, and sustainable transport solutions. In this study, numerical simulations were performed to determine the optimum geometrical parameters of aluminum rail and permanent magnet arrangements for EDS systems. For that, the aluminum rail and permanent magnet combinations were investigated, and then the same simulations were repeated by creating cavities in the aluminum rails for cost efficiency. The highest levitation-to-drag ratio (LDR) was achieved with magnet arrays having a fill factor of 0.4, 20 mm thick aluminum, and an aluminum rail width of 60 mm. Additionally, by creating cavities into the rails, it was calculated that approximately $2.44 million could be saved from the total cost of $17.34 million cost of the 1000 km double-strip aluminum rails, with negligible reduction in the LDR ratio. The findings of this study provide a sustainable and economical transport solution by increasing the cost effectiveness of PMs-EDS maglev systems. The results obtained may pave the way for the development of different types of applications of maglev technology and increase the potential for commercial use of maglev transport systems.
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İncele - MakaleAçık Erişim2025Scopus SJRQ1Effects of Augmented Reality and Video-Based Learning in Inquiry-Based Science Education on Academic Achievement and Motivation to Learn Science
Arici, Faruk; Yilmaz, Rabia Meryem
Background: Inquiry-based learning (IbL) has significantly contributed to science education, and this impact can be enhanced with technology. Augmented Reality (AR) offers 3D visualisation and interactive experiences, whereas Video-based Learning (VbL) provides narratives with visual and audio support. Both methods aid students in exploring, understanding and boosting their motivation to learn science (MtLS). Objectives: This study examines the effect of AR and VbL within an IbL environment on students' MtLS and academic achievement. Methods: A mixed-method research design was used, with a quasi-experimental approach for the quantitative aspect and a multiple case study for the qualitative part. Participants included two experimental groups and a control group. Experiment 1 (25 participants) received AR and IbL, Experiment 2 (26 participants) received VbL and IbL and the control group (25 participants) received only IbL instruction. Data were collected using academic achievement tests, MtLS scales and semi-structured interviews. Quantitative data were analysed via ANCOVA using SPSS, whereas qualitative data underwent content analysis. Results and Conclusions: Results indicated that AR technology in the IbL environment was more effective than VbL in enhancing academic achievement and MtLS. The VbL group also performed better than the IbL-only group. With regard to the MtLS subfactors, no significant differences were observed between the groups in terms of motivation for participation. However, Experiment-1 demonstrated significant improvement in motivation for conducting research and motivation for collaboration, compared to Experiment-2 and the control group. Experiment 2 showed significant results compared to the control group. Experiment-1 demonstrated significant improvement in motivation for performance and motivation for communication compared to the control group. Although Experiment-1 yielded higher results than Experiment-2, this difference was not significant. Experiment 2 and the control group demonstrate notable parallels. The findings of this study indicate that AR effectively supports academic achievement and MtLS in an IbL environment. Consequently, the utilisation of AR is advocated for middle school students engaged in the study of vertebrates.
AtıfScopus2WoS2OpenAlex5İncele - MakaleAçık Erişim2025Scopus SJRQ2Relation between monocyte to high-density lipoprotein cholesterol ratio and prognosis in recipients after liver transplantation
Okutan, Serafettin; Saritas, Hasan; Saritas, Serdar; Bulbuloglu, Semra; Guneş, Hüseyin
Background: The end-stage liver diseases require liver transplantation as the life-saving solution. It is known that monocytes/macrophages and high-density lipoprotein cholesterol (HDLC) have important contributions to the development of hepatic inflammation and oxidative stress before liver transplantation. However, the effect of monocyte/HDL-C ratio (MHR) on clinical progression and outcome in the post-transplant period are not fully understood. Our hypothesis is that the MHR value may be associated with poor vs. good outcomes after liver transplantation. Methods: In our retrospective study, we included 464 liver transplant recipients. Patients' data were extracted from electronic and other paper records in our teaching/research hospital. The MHR values and other blood parameters (creatinine, total protein, albumin, etc.) were expressed as a mean and standard deviation, which were analyzed by the Pearson correlation test. The relationship between graft dysfunction and MHR was determined by ROC curve analysis. Results: The mean age of liver transplant recipients was 45.8 ± 13.7 years. Nineteen percent of patients had liver failure due to Alcoholic Fatty Liver Disease (AFLD) and 34.5 % had liver failure due to hepatitis B virus. At the end of 3 months after liver transplantation, 84.5 % of liver transplant recipients were alive, 5.8 % experienced graft rejection and 5.17 % had an infection. There was a statistically significant improvement in total protein, albumin, liver function tests, and serum creatinine values of the survivors (all p < 0.05). The MHR levels were significantly higher in patients who died after transplantation in comparison to those who survived before and after liver transplantation and these differences were statistically significant (p < 0.01). Conclusion: The increased MHR values of recipients after liver transplantation correlated with their risk of survival. Furthermore, the MHR value increased with increased MELD score and the number of days of hospitalization and was not affected by gender and age. MHR was higher in patients with chronic diseases. Patients with high MHR before and after transplantation should be monitored more closely in the perioperative period.
- MakaleYalnız künye2025Scopus SJRQ1Evaluation of the optical, structural, and morphological characteristics of a Sn-doped α-Fe2O3 thin film fabricated using RF and DC magnetron Co-sputtering technique
Salari, Maryam Abdolahpour; Şenay, Volkan; Muğlu, Günay Merhan; Sarıtaş, Sevda; Kundakçı, Mutlu
In this research, a Sn-doped hematite (α-Fe2O3) thin film on a glass substrate was synthesized using DC and RF magnetron sputtering techniques, and the physical features of the film were analyzed in detail. This study, conducted to investigate the effects of Sn doping on the hematite structure, evaluated the optical and morphological attributes of the thin film using advanced characterization techniques such as UV–VIS spectroscopy, Raman spectroscopy, XRD, SEM, EDS, and AFM. The optical band gap was determined from absorption measurement and calculated to be 2.12 eV. Raman spectroscopy results revealed various characteristic peaks between 100 cm−1 and 1500 cm−1. A strong (214) diffraction peak confirms the enhanced hematite phase formation in the thin film. The crystallite size of the Sn-doped thin film, calculated via Scherrer's formula, is 20 nm. SEM images showed that the thin film exhibited a smooth and homogeneous surface morphology on the glass substrate. According to the EDS results, the atomic doping ratio of Sn in Fe2O3 is 2.84 %. Additionally, AFM analysis confirmed that the Sn-doped α-Fe2O3 thin film had a smooth surface, as indicated by a low RMS (Root Mean Square) roughness value of 8.11 nm. These properties suggest that the thin film could be suitable for optoelectronic applications. The study emphasizes the potential of Sn-doped α-Fe2O3 thin films, particularly for optoelectronic and photocatalytic devices, and underscores the need for further investigation of these materials. Furthermore, it was concluded that these materials should be considered in a broader context for their potential use in various technological applications.
AtıfScopus23WoS22OpenAlex25İncele - Kitap BölümüAçık Erişim2025Surface modifications in titanium alloys produced by powder bed additive manufacturing methods
Gündüz, Demet Özaydın; Küçüktürk, Gökhan; Salunkhe, Sachin
Powder bed additive manufacturing has heralded an era of unparalleled flexibility and innovation in material production, surpassing traditional manufacturing methods. These methodologies are potent tools for crafting intricate structures, offering meticulous control over material properties. With a specific focus on titanium alloys, this investigation delves into strategies to enhance material performance through meticulous surface modifications in titanium alloys manufactured using powder bed additive manufacturing methods. Surface alterations are crucial in customizing the characteristics of titanium alloys to meet specific performance criteria. This comprehensive study aspires to deliver a discerning overview of surface modifications in titanium alloys produced through powder bed additive manufacturing methods, furnishing valuable insights into comprehending the repercussions of these modifications on biocompatibility, mechanical attributes, and overall performance.
AtıfScopus1OpenAlex1İncele - MakaleAçık Erişim2025Scopus SJRQ2High-Performance Microwave-Absorbing Hemp Textile: Ni-Zn Ferrite and Multiwalled Carbon Nanotubes-Infused Nanocomposite for X-Band Electromagnetic Interference Shielding
Teber, Pembe; Teber, Ahmet; Karakaş, İbrahim Hakkı
This study aims to develop a flexible and sustainable electromagnetic (EM) wave-absorbing material by using hemp fabric as a substrate incorporated with multiwalled carbon nanotubes (MWCNTs) and magnetic Ni-Zn ferrite nanoparticles (NPs). In this context, the objective is to achieve effective EM attenuation across a wide frequency range using a green, lightweight composite to meet the rising demand for ecofriendly shielding in electronic and communication systems. Ni0.5Zn0.5Fe2O4 and MWCNT composite NPs are uniformly dispersed in a molten paraffin binder and impregnated into hemp fabrics. The magnetic NPs are synthesized via the microwave-assisted combustion method. The EM parameters of the resulting structure are determined in the X-band using experimental scattering data and the Nicholson–Ross–Weir method. Absorption performance is evaluated based on varying weight ratios of magnetic NPs and MWCNTs, with an emphasis on impedance matching. The results indicate that combining dielectric and magnetic components significantly enhances absorption. A maximum reflection loss of −72.42 dB and a 3.81 GHz bandwidth (covering over 90.71% of the X-band) are achieved at 10.08 GHz. Increasing Ni-Zn content shifts the resonance to higher frequencies. This sustainable, flexible composite shows strong potential for electromagnetic interference shielding, particularly in defense applications requiring radar invisibility.
AtıfScopus1WoS1OpenAlex1İncele - MakaleYalnız künye2025Scopus SJRQ1Regulate Yourself, Improve Your Writing: The Hidden Power of Metacognitive Awareness and Self-Efficacy
Sarikaya, İsmail; Sökmen, Yavuz
This study aims to determine the serial mediatory effect of metacognitive writing awareness and writing self-efficacy in the relationship between primary school students' self-regulation and writing success. The study participants were 408 fourth-grade students attending public primary schools in two cities in eastern Turkey. This study is a correlational survey research. We used SPSS and PROCESS macros to analyze the data. The study revealed strong positive relationships between writing success and self-regulation, metacognitive writing awareness, and writing self-efficacy. It showed that the serial mediation role of metacognitive writing awareness and writing self-efficacy was significant. As one of the first studies to address these relationships, the study fills the gaps in the literature on writing success and sheds light on interventions to improve writing skills at the primary school level.
AtıfScopus1WoS1OpenAlex1İncele - MakaleAçık Erişim2025Scopus SJRQ1Design, Simulation, and Fabrication of High-Performance Metamaterial Absorber for EMI Mitigation and THz NDT/Imaging Applications: A Shape-Preserved GHz-to-THz Transition Approach
Teber, Ahmet
A metamaterial absorber (MMA) designed for the 5G FR2/mmWave bands (24.25–24.45 and 24.75–25.25 GHz) is simulated with CST Studio Suite and fabricated using laser and wet etching techniques. Absorption measurements are performed using horn antennas in conjunction with a vector network analyzer (VNA). The absorber achieves >95.8% absorption under normal incidence for Mode-1, while it exceeds 90% for Mode-2 in the 24.75–25.20 GHz. The simulation results are validated through an electrical equivalent circuit model and experimental data. This absorber presents a promising solution for electromagnetic interference (EMI) reduction and shielding applications. The same structure, scaled from mm to µm without shape alteration, achieved over 90% absorption in the terahertz (THz) region (24–26 THz), particularly in the 24–25.12 THz range. The THz region, known as the “THz gap”, presents challenges due to limited THz sources and detectors. However, technologies such as THz non-destructive testing (NDT) offer potential in biomedical, communication, and defense applications. From this perspective, the high performance and scalability to µm dimensions without changing the shape of the absorber make it suitable for high-frequency EM shielding applications. This dual behavior in the GHz and THz regions offers a versatile advantage due to its varied functionality.
AtıfScopus4WoS4OpenAlex3İncele - MakaleAçık Erişim2025Scopus SJRQ2Liquorilactobacillus hordei SK6 and Liquorilactobacillus mali SK26 from Traditional Water Kefir Produce Dextrans with Technological Roles
Edis, Kader Korkmaz; İspirli, Hümeyra; Yilmaz, Mustafa Tahsin; Dertli, Enes
The significance of exopolysaccharides (EPS) in various applications has garnered increasing attention. In this study, two bacteria, Liquorilactobacillus hordei SK6 and Liquorilactobacillus mali SK26, isolated from traditional water kefir grains, produced 8.89 g/L and 7.2 g/L of homopolymeric glucan, respectively. NMR analysis revealed that both glucans were dextrans composed of (1 → 6)-linked α-d-glucose units, with (1 → 3)-linked α-d-glucose units serving as branching points, accounting for 5.3 ± 0.2% in dextran SK6 and 2.7 ± 0.15% in SK26. FTIR and XRD analyses further confirmed the amorphous nature of the dextrans, although dextran SK6 exhibited micro-arranged structures. Thermal characterization using TGA and DSC showed degradation temperatures of 298.5 °C for dextran SK6 and 282.1 °C for dextran SK26. Clear differences in morphological properties were observed using AFM and SEM. These findings provide valuable insights into dextran-producing strains and their potential applications in various industries.
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İncele - Derleme MakaleAçık Erişim2025Scopus SJRQ1Understanding the Functionality of Probiotics on the Edge of Artificial Intelligence (AI) Era
Asar, Remziye; Erenler, Sinem; Devecioglu, Dilara; Ispirli, Humeyra; Karbancioglu-Guler, Funda; Ozturk, Hale Inci; Dertli, Enes
This review focuses on the potential utilization of artificial intelligence (AI) tools to deepen our understanding of probiotics, their mode of action, and technological characteristics such as survival. To that end, this review provides an overview of the current knowledge on probiotics as well as next-generation probiotics. AI-aided omics technologies, including genomics, transcriptomics, and proteomics, offer new insights into the genetic and functional properties of probiotics. Furthermore, AI can be used to elucidate key probiotic activities such as microbiota modulation, metabolite production, and immune system interactions to enable an improved understanding of their health impacts. Additionally, AI technologies facilitate precision in identifying probiotic health impacts, including their role in gut health, anticancer activity, and antiaging effects. Beyond health applications, AI can expand the technological use of probiotics, optimizing storage survival and broadening biotechnological approaches. In this context, this review addresses how AI-driven approaches can be facilitated by strengthening the evaluation of probiotic characteristics, explaining their mechanisms of action, and enhancing their technological applications. Moreover, the potential of AI to enhance the precision of probiotic health impact assessments and optimize industrial applications is highlighted, concluding with future perspectives on the transformative role of AI in probiotic research.
AtıfScopus41WoS32OpenAlex36İncele - MakaleYalnız künye2025Scopus SJRQ3The Neuronal Determinism of Freedom in Education: Conditioned Cognition, Perceived Subjectivity and the Neuroscientific Paradox
Aksakallı, Ayhan
The paradox of education as both a space of cognitive freedom and a conditioning mechanism raises fundamental questions about intellectual autonomy. By examining the tension between neurological determinism and cognitive agency, this paper asks whether education encourages independent thought or directs individuals towards predefined ideological structures. Drawing on philosophical, psychological and neuroscientific perspectives, it explores how knowledge production, pedagogical frameworks and social conditioning shape cognition. While neuroplasticity suggests cognitive adaptability, institutionalized education often channels intellectual inquiry into rigid epistemological categories. Psychological theories emphasize how reinforcement mechanisms and implicit biases shape learning and reinforce norms rather than foster genuine intellectual emancipation. Consequently, this study argues that education needs to be restructured from being merely a means of ideological reproduction. A transformative model of education should center on critical inquiry, self-reflection and metacognitive adaptability. The hope is that education will cease to be a conditioning tool by encouraging independent thinking and become a space where individuals can critically explore and transform their cognitive worlds.
- MakaleYalnız künye2025Scopus SJRQ1The role of social media marketing activities in converting existing students into university advocates
Kethüda, Önder; Bilgin, Yusuf
This paper focuses on university social media marketing (SMM) activities and their role in converting following students into university advocates on social media. The study, which has a relationship-oriented approach, first categorizes university SMM activities into four groups: entertainment, interaction, trendiness, and customization. Then it provides the theoretical background for the research model and unveils the role of university SMM on university image, student satisfaction, student loyalty, and electronic word-of-mouth (e-WoM). Data was gathered from 1072 university students in an undergraduate program at 55 universities in Istanbul, Turkey. Structural equation modeling was used to test the model. Results indicate that a university’s SMM activities have a significant role in spreading favorable attributes of universities on social media, and university image, student satisfaction, and student loyalty foster this relationship.
AtıfScopus13WoS13OpenAlex16İncele - Kitap BölümüYalnız künye2025CFD and solar water collector
Guclu, Tamer; Cuce, Pinar Mert; Cuce, Erdem
Increasing environmental pollution on a global scale and the rapid depletion of traditional energy sources have led scientists to search for clean and renewable energy sources. Among renewable energy sources, solar energy stands out as a clean, energy-efficient and abundant source. There are many methods of obtaining thermal and electrical energy from solar energy. Among these methods, solar water collectors are widely used throughout the world, thanks to their wide range of applications, from domestic hot water supply and space heating applications to industrial process heat. The main purpose of this study is to examine solar water collector systems in a general framework. Solar water collector types are introduced in detail, their performance is evaluated, and especially CFD studies on their thermal efficiency are presented. Solar water collector systems were examined comparatively in terms of energy efficiency and the parameters affecting their thermal performance were observed. As a general acceptance, evacuated-tube solar water collectors are more efficient than flat-plate collectors. Compound parabolic collectors are preferred in higher-temperature applications. Thermal efficiency can be increased by using nanofluids or hybrid systems.
- MakaleYalnız künye2025Scopus SJRQ3Inorganic CNTS as a potential hole-transport material for extremely stable and effective perovskite solar cells
Sari, Fahriye; Ozel, Sultan Suleyman; Ozel, Faruk; Bersani, Massimo; Kus, Mahmut
In view of these distinctive properties, chalcogenide materials have attracted attention in response to the growing need for sustainable energy sources, with a particular focus on the efficient utilization of solar energy. One of the principal challenges associated with PSCslies in addressing the fill factor (FF) deficit and resolving stability concerns. Band alignment and resistance at the interface further reduce the fill factor, thereby limiting device performance. This research demonstrates that Cu2NiSnS4 (CNTS) can serve as an effective hole transport material for perovskite solar cells, offering an enhanced stability. In this study, kesterite-based CNTS is utilized as a hole-selective interlayer in inverted CH3NH3PbI3 perovskite solar cells (PSCs) on ITO/CNTS substrates. CNTS was selected due to its numerous advantages, including the abundance of their constituent elements in nature, non-toxicity, cost-effectiveness, appropriate band gap and absorption coefficient for photovoltaic (PV) applications, as well as their tunable band gap properties. Deposition of CNTS onto ITO glass alters the substrate's work function, resulting in open-circuit voltages exceeding 1.0 V. Solar cells on ITO substrates without a metal oxide layer demonstrated an exceptional power conversion efficiency (PCE) of 10.6 %. This highlights the potential of PSCs for high performance with a single selective contact. Our findings reveal that these cells retain over 93 % of their initial efficiency after 720 h, demonstrating improved stability. Replacing p-type organic materials with inorganic counterparts offers a promising avenue for further research.
AtıfScopus3WoS3OpenAlex3İncele - MakaleAçık Erişim2025Scopus SJRQ1A Meta-Analysis of Self-Management Interventions in Teaching Daily Living Skills to Autistic Individuals
Aydin, Orhan; Sulu, Mehmet D.; Ari-Arat, Ceren
The current study aimed to conduct a systematic review and meta-analysis of self-management interventions for teaching daily living skills to autistic individuals. This study accessed the corresponding studies by doing a search in six databases. 14 articles and one dissertation met the inclusion criteria. The included studies were first analyzed descriptively and coded according to quality indicators using What Works Clearinghouse (WWC) standards. Second, the effect sizes of the included studies were calculated using two different effect size measures (i.e., Tau-U and performance-criteria-based effect size values [PCES]). Third, these analyses were also conducted for generalization and maintenance data. Of 15 studies included in this review, nine met the WWC standards with and without reservations. Tau-U analyses were conducted for 14 studies, whereas PCES values were calculated for only eight studies with mastery criteria. The findings indicated that the self-management interventions had a.93 CI95 (.80, 1) overall effect size for Tau-U with a very large effect. On the other hand, the overall effect size for the PCES values indicated a moderate effect with.99. The weighted effect sizes in generalization and maintenance phases were very large for Tau-U; however, moderate to high effects for PCES. Although self-management interventions showed diversity, one of the domains of daily living skills (i.e., community living skills) has not been studied in the field. Notably, among the studies in our review, the last ones are from 2019. Detailed findings from descriptive analyses and two different effect size calculations are discussed, and recommendations for future studies are given.
AtıfScopus5WoS3OpenAlex9İncele - MakaleAçık Erişim2025Scopus SJRQ2Design and Fabrication of Multi-Magnetron Microwave Oven for High-Temperature Applications
Özmen, Ahmet; Coşkun, Aykut; Ertuğrul, Mehmet
This article examines the design, manufacture, and performance of multi-magnetron ovens capable of reaching high temperatures. Firstly, an appropriate waveguide was simulated, and the production process was completed. Then, the proposed designs for multi-magnetron ovens were simulated, and appropriate dimensions were suggested. It was reported that the average power density (PD) value of the produced multi-magnetron oven was 0.37 mW/cm², which indicates its performance and efficiency. This value was found to be compliant with standards and safe for human use. The main objective of our study was to demonstrate that waveguides can reach high temperatures at the center of the oven without affecting each other. In this context, it was observed that the temperature created by magnetrons operating in single, double, triple, and quadruple modes gradually increased at the center of the oven. The simulation results supporting this showed that the S21 parameter was-177 dB. The design proposed and applied in our study was efficient, easy to produce, safe for human use, low cost, and usable in commercial and academic studies for reaching high temperatures. Overall, the multi-magnetron oven design proved to be a successful and practical solution for applications requiring high temperatures, showcasing its potential for both industrial and research purposes. The findings of this study contribute valuable insights into the development of advanced heating technologies, demonstrating significant improvements in efficiency and safety for high-temperature applications.
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İncele - MakaleAçık Erişim2025Scopus SJRQ1Artificial neural network modelling of reactive red 45 Azo dye removal by peroxi-electrocoagulation
Bayar, S.; Erdoğan, M.; Taşdemir, A.; Kaleli, A.; Paloluoglu, C.
In the present study, the Peroxi-electrocoagulation process was employed to remove chemical oxygen demand and the decolorization of reactive red 45 dye wastewater. This process offers several advantages, including the oxidation of dye molecules by hydroxyl radicals and coagulation through iron hydroxide precipitation. The reactor was equipped with six iron electrodes, providing a total surface area of 546 cm2. The effects of applied current (0.3–0.18 A), hydrogen peroxide concentration (100–700 mg/L), initial pH (2.5–5.0), and dye concentration (100–500 mg/L) on chemical oxygen demand and color removal were investigated. Optimum operational conditions were determined to be applied current of 0.150 (corresponding to current density of 0.27 mA/cm2), pH of 3.0, H2O2 concentration of 600 mg/L, and dye concentration of 200 mg/L. Under these conditions, COD and color efficiencies reached 83% and > 99%, respectively. The specific energy consumption under optimal conditions was 33.4 kWh/kg COD with 82.8% COD removal. The findings indicate that increasing the applied current and H2O2 concentration enhances removal performance up to a certain threshold, beyond which no significant improvement is observed. This suggests that the availability of electrogenerated reagents governs the overall reaction efficiency. Additionally, an artificial neural network model was developed to predict COD and color removal efficiencies. The network employed a 4:10:2 architecture and was trained using a backpropagation algorithm. Input variables included applied current, pH, H2O2 concentration, and dye concentration. The model exhibited high predictive accuracy, with R2 of 0.9782 for COD removal and 0.9579 for Color removal, confirming the effectiveness of the ANN in modeling.
AtıfScopus3WoS3OpenAlex4İncele - MakaleAçık Erişim2025Scopus SJRQ1Validity and Reliability of a Novel AI-Based System in Athletic Performance Assessment: The Case of DeepSport †
Aydemir, Burakhan; Aydoğan, Muhammed Talha; Boz, Emre; Kul, Murat; Kırkbir, Fatih; Özkara, Abdullah Bora
This study aimed to examine the validity and reliability of the AI-based DeepSport application by comparing its outcomes with those from the reference device, OptoJump. The primary dependent variables measured were jump height and anaerobic power during vertical jump assessments. Twelve elite male basketball players voluntarily participated in the study (age = 21.53 ± 1.14 years; sports experience = 6.47 ± 1.01 years). DeepSport uses AI-based image processing from standard cameras, while OptoJump uses optical sensor technology. Both DeepSport and OptoJump systems were utilized to assess participants’ Countermovement Jump (CMJ) and Squat Jump (SJ) performances. A G*Power (version 3.1.9.7) analysis determined the required sample size, adopting a 95% confidence level, 90% test power, and an effect size of 0.25. Validity assessments were conducted using Bland-Altman plots and ordinary least products (OLP) regression analysis, while reliability was evaluated through intraclass correlation coefficient (ICC), coefficient of variation (CV), standard error of measurement (SEM), and smallest detectable change (SDC) analyses. DeepSport showed excellent reliability in CMJ and SJ tests with ICC values > 0.90, and CV ranged between 2.12% and 4.95%. Results were consistent with OptoJump, showing no significant differences according to t-test results (p > 0.05). Bland–Altman analyses indicated no systematic bias and random distribution. These findings confirm that both DeepSport and OptoJump devices demonstrate high reliability and consistency, suggesting their validity and reliability for use in athlete performance assessments by coaches and athletes.
AtıfScopus4WoS3OpenAlex5İncele - MakaleAçık Erişim2025Scopus SJRQ1Cultural adaptation and psychometric validation of the Turkish MIND diet adherence scale for young adults
Esgin, Özge; Aslan Çin, Nazlı Nur; Kaplan, Özlem Nur; Baratzada, Leeda; Özçelik, Ayşe Özfer
Background: The MIND diet, which promotes brain health, has a potential role in preventing cognitive decline. To further establish its applicability, it is essential to validate the MIND Diet Adherence Scale in different populations with diverse dietary habits, including Turkish young adults. Objective: The aim of this study was to evaluate the construct validity, internal consistency and test-retest reliability of the Turkish version of the MIND diet assessment tool in the Turkish population. Methods: A total of 310 individuals aged between 19 and 39 (mean age 25.0 ± 5.1) voluntarily participated in this study. Data were collected through face-to-face interviews, incorporating socio-demographic characteristics, anthropometric measurements, the MIND Diet Adherence Scale, and the Mediterranean Diet Adherence Scale. Both exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) of the MIND Dietary Adherence Scale were performed. In the CFA, the goodness of fit of the hypothesized model to the observed data was evaluated using a range of fit indices. Results: The study determined an adequate sample size (KMO = 0.67), with sufficient item correlations for factor analysis (χ2 = 449.74; p < 0.001). Confirmatory factor analysis and goodness-of-fit indicators supported the fit of the two-factor model to the Turkish data. The Cronbach’s alpha internal consistency coefficient for the MIND Diet Adherence Scale was 0.61. All items in the scale exhibited a positive correlation with the total score, exceeding 0.40. Furthermore, a substantial positive correlation was observed between the Mediterranean Diet Adherence Scale and the MIND Diet Adherence Scale. Conclusions: The Turkish adaptation of the MIND Diet Adherence Scale can be utilized in its entirety, without the need to remove any items. This study affirms that the MIND Diet Adherence Scale is a valid and reliable measurement tool for assessing dietary habits in Turkish society.
AtıfScopus3WoS3OpenAlex2İncele - MakaleYalnız künye2025Scopus SJRQ1An attraction–repulsion chemotaxis with logistic source involving the exponents depending on the spatial variables
Ayazoglu, Rabil
We study the quasilinear attraction–repulsion chemotaxis system of parabolic–elliptic type with logistic source involving the exponents depending on the spatial variables: ut=Δu-χ∇·uu+1r-1∇υ+ξ∇·uu+1r-1∇ω+au-bum(x), 0=Δυ-βυ+αu, 0=Δω-δω+γu, where α, β, δ, γ, χ, ξ, b>0, a≥0, r∈R and m:Ω→1,∞ is a measurable function, subject to the homogeneous Neumann boundary conditions in a bounded domain RNN≥1 with smooth boundary. We prove that this system possesses a unique global bounded classical solution, which is an extension of known results, if the repulsion cancels the attraction in the sense that (balance) χα=ξγ with essinfx∈Ωmx>r+N-2+N,1, and if the attraction prevails over the repulsion in the sense that χα>ξγ with essinfx∈Ωmx>maxr+1,1, and if the repulsion prevails over the attraction in the sense that χα<ξγ.
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