Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Akeren, Zahide(2)
- Ari-Arat, Ceren(1)
- Aslan, Tugba(1)
- Ateş, Fatih Mehmet(1)
- Aydin, Orhan(1)
- Ayten, Kagan Koray(1)
- Bolat, Fevzi Cakmak(1)
- Cuce, Erdem(1)
- Doğan, Ömer(1)
- Dumlu, Ahmet(1)
- Erbayrak, Engin(1)
- Geçici, Birol(1)
- Güllü, Eda(1)
- Hasanoğlu Özkan, Elvan(1)
- Hintistan, Sevilay(1)
- Kaleli, Aliriza(1)
- Kalyoncuo, Servet(1)
- Kaya, Metin(1)
- Korkmaz, Şadan(1)
- Kızıl, Hamit Emre(1)
- Lök, Şefika İ(1)
- Malgaca, Levent(1)
- Nartop, Dilek(1)
- Pat, Suat(1)
- Selvitopu, Abdullah(1)
- Sivrioglu, Selim(1)
- Sulu, Mehmet D.(1)
- Uyar, Mehmet(1)
- Özen, Soner(1)
- Şenay, Volkan(1)
Yayınlar
- MakaleYalnız künye2026Scopus SJRQ3Synthesis and cytotoxic activity studies of novel heterocyclic thiosemicarbazone compounds as anticancer agents
Güllü, Eda; Hasanoğlu Özkan, Elvan; Kızıl, Hamit Emre; Nartop, Dilek
Herein, novel heterocyclic thiosemicarbazone compounds (Hb1, Hb2, Hb3) containing pyrimidine, imidazole, pyridine, and phenyl rings were synthesized via the condensation method as potential therapeutic agents for the treatment of non-small cell lung cancer. The structure of novel heterocyclic compounds was elucidated by using some spectroscopic techniques (organic elemental analysis, fourier transform infrared spectroscopy, proton/carbon nuclear magnetic resonance spectroscopy, scanning electron microscopy and energy dispersive X-ray image, and molar conductance measurement). The antiproliferative activity of novel heterocyclic thiosemicarbazone compounds using CVDK-8 cell viability assay. The viability assay was examined against A549 human non-small cell lung cancer cell line. All heterocyclic thiosemicarbazone compounds exhibited varying degrees of dose-dependent cytotoxic activity against A549 NSCLC cells. The results showed that the pyridine-based heterocyclic compound (Hb3) was the most potent antiproliferative agent, demonstrating a dose-dependent reduction in cell viability at concentrations of 50 µg/mL and higher.
- Derleme MakaleAçık Erişim2026Scopus SJRQ1A Meta-Analysis of Self-Management Strategies to Enhance Educators’ Teaching Performance
Aydin, Orhan; Ari-Arat, Ceren; Sulu, Mehmet D.
This meta-analysis examines the effectiveness of self-management strategies in enhancing the teaching performance of educators, with a focus on special education contexts. Thirty-six studies, including peer-reviewed articles and gray literature, were evaluated for methodological rigor using the What Works Clearinghouse (WWC) Design Standards. Of these, 26 studies meeting the standards with or without reservations were further analyzed using descriptive review, meta-analysis, and moderator analysis. Findings revealed self-monitoring is the most frequently used self-management strategy. Among the educators included in the studies, the majority were special education teachers. Effect sizes were calculated using Tau-U for all 26 studies, between-case standardized mean difference (BC-SMD) for 25 studies, and performance-criteria-based effect size (PCES) for 13 studies reporting a mastery criterion. The overall Tau-U indicated a very large effect size of 0.88 (CI95 = [0.74, 1]), and BC-SMD resulted in a large effect size of 0.87 (CI95 = [0.77, 0.98]). The PCES showed an overall effective effect size of 1.15 (CI95 = [1.07, 1.23]). Moderator analysis revealed behavior-specific praise, and fewer years of teaching experience were associated with higher teaching performance effect sizes compared to other relevant categories; however, years of teaching experience and higher teaching performance were positively associated when using BC-SMD calculations. Detailed findings along with corresponding recommendations are discussed. © Hammill Institute on Disabilities 2026. This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
- MakaleYalnız künye2026Scopus SJRQ2Social support mediates relationship between death anxiety and stress in chronic illness
Akeren, Zahide; Kalyoncuo, Servet
Background: Fear of death may become salient among individuals with chronic illness. This study examined the mediating role of perceived social support in the relationship between death anxiety and perceived stress in individuals with chronic illness. Methods: The study was conducted with 265 individuals diagnosed with chronic illness. The sample included participants with hypertension (20.7%), diabetes (19.6%), and cardiovascular diseases (16.2%), among conditions. Data were collected using the Templer Death Anxiety Scale, the Perceived Stress Scale, and the Multidimensional Scale of Perceived Social Support. Results: A weak negative correlation was found between death anxiety and perceived social support (r = -0.156, p = 0.011), while a positive correlation was observed between death anxiety and perceived stress (r = 0.362, p < 0.001). The proportion of the total effect mediated by perceived social support was 32.7%. Death anxiety was associated with perceived stress (β = 0.347, p < 0.001). The of perceived social support as a mediator, the coefficient decreased (β = 0.234, p < 0.001), indicating partial mediation. Conclusion: Perceived social support partially mediated the relationship between death anxiety and perceived stress. Higher levels of death anxiety were associated with higher perceived stress, and this association was attenuated in the presence of perceived social support.
- MakaleAçık Erişim2025Scopus SJRQ3Online software for a new risk assessment method in occupational health and safety: RSCAL
Ateş, Fatih Mehmet; Doğan, Ömer
Risk assessment is necessary for the safety of employees in the workplace. Risk assessment methods contain some deficiencies arising from the persons performing the analysis. In order to partially overcome this situation, a risk assessment method has been developed by the authors by utilizing the data on occupational accidents in Turkey. In the method, Occupational Health and Safety Professionals who will perform the risk assessment can calculate the risk score without giving a numerical value for any hazard and corresponding risk that they identify in the workplace. In the study, a user-friendly online software called RSCAL by the authors, with a web address of https://rscal.com.tr/, which can meet all the above-mentioned requirements and calculate risk scores for workplaces serving in all types of sectors, has been developed. Through this online application, the identified hazard, risk and exposures of the business to be analyzed can be selected; the necessary corrective and preventive actions can be written by the user and then the risk score can be calculated. After that, all hazards specific to the enterprise can be meticulously identified and the risk assessment of the enterprise can be made by calculating the risk scores. This risk assessment can also be printed out in excel file format. In the future, parameters such as the deadline for each hazard, the legal requirement or standard from which the corrective preventive action to be taken arises can be added to the RSCAL calculation tool.
AtıfScopus1
İncele - MakaleAçık Erişim2024Scopus SJRQ2Analysis of an actively controlled composite box manipulator without external actuator
Lök, Şefika İ; Malgaca, Levent; Uyar, Mehmet
This study focuses on active vibration control for a single-link composite box manipulator by using a single actuator for driving and control actions. Model extraction and system identification techniques are studied to obtain mathematical models of the manipulator. The state space model is extracted from the finite element model using modal analysis conducted in ANSYS, while the system identification approach is an experimental modeling method using the input and output signals of the system. The input signals are defined as triangular and trapezoidal motion profiles, while the output signals are the acceleration signals of the manipulator. Proportional derivative and positive position feedback controllers are implemented on the obtained mathematical models to reduce residual vibrations. The simulation results are successfully verified by experiments, and uncontrolled/controlled results are evaluated with reduction rates.
AtıfScopus3WoS3OpenAlex2İncele - MakaleAçık Erişim2024Scopus SJRQ2Investigation of the effect of green walking and intelligence games on the cognitive skills of individuals between the ages of 50–70 survived COVID-19 disease: A randomized controlled study
Akeren, Zahide; Hintistan, Sevilay
Background: Mild cognitive impairment can be considered as the preclinical stage of Alzheimer's disease. With the addition of COVID-19 disease to the cognitive decline that occurs with aging, it may cause dementia with severe cognitive losses such as Alzheimer's disease in some people. Physical activity and brain-occupying practices can significantly improve the risk factors for cognitive disorders and Alzheimer's disease. Objective: The aim of study was to examine the effect of green walking and intelligence game on the cognitive skills of individuals aged 50–70 years with COVID-19. Methods: The randomized controlled study was completed with 40 individuals, 20 in the experimental and 20 in the control group. Individuals in the experimental group green walking for 30 min three days a week for one month in two groups of 10 people, accompanied by the researcher. In addition, these individuals played intelligence games (brain games-memory thinking and brain exercise) via their smartphones for 15 min every day for a month. Results: The cognitive skills and cognitive dimensions of “attention, concentration, memory, language and orientation” of the individuals in the experimental group were significantly increased compared to the control group individuals (p < 0.05). Conclusions: It was found that green walk and intelligence game practice increased the cognitive skills of individuals aged 50–70 years who had outpatient COVID-19. © The Author(s) 2024. This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).
AtıfScopus1WoS2OpenAlex2İncele - Derleme MakaleAçık Erişim2023Scopus SJRQ2A Meta-Analytic Review of the Effect of Socioeconomic Status on Academic Performance
Selvitopu, Abdullah; Kaya, Metin
The two main purposes of the current meta-analysis were (a) to determine the relation between socioeconomic status (SES) of students and academic performance (AP) (b) and evaluate the effect of several potential moderating factors in this relation. Data covered the publications between 2010 and 2019, and the dataset consisted of 48 independent studies that included 62 different samples, and the total sample was 386.601. Findings revealed that the relation between SES and academic performance represented a moderate positive correlation. All moderators, type of SES measure, academic performance scale, location, grade level, subjects of academic performance, and year, produced significant effects, respectively. These findings were discussed for every category of moderators with the related literature.
AtıfScopus65WoS54OpenAlex81İncele - MakaleYayıncıda açık erişim2021Scopus SJRQ2Determination of flexural properties of hybrid composite using Cowper-Symonds rate-dependent material model
Erbayrak, Engin
This study addressed to determine the flexural properties of hybrid composite laminates (HCAFRE) under the strain rate sensitivity. The hybrid composite laminate was formed as consecutive stacking of a sequence of plain woven carbon fiber reinforced epoxy (CFRE) and a plain-woven aramid fiber reinforced epoxy (AFRE) laminates. The flexural tests were carried out at four different strain rates (0.01, 0.11, 0.55, 1.1 s−1) to determine the strain rate sensitivity of the HCAFRE. Moreover, the strain rate sensitivity of CFRE and AFRE was also determined individually. The effect of different fiber orientations (0°, 45°, and 90°) on the flexural properties of the composite laminates were also investigated at the scope of this study. In numerical analysis, composite laminates (CFRE, AFRE, and HCAFRE) were constituted in LS-DYNA finite element program using the Cowper-Symonds material model (MAT 112) which includes strain rate dependency. Consequently, it was seen that the experimental and numerical results were indicated a similar tendency to each other. Therefore, it was understood that the Cowper-Symonds material model is suited for the flexural behavior model of composite laminates under different strain rates.
AtıfScopus8WoS6OpenAlex8İncele - MakaleAçık Erişim2021Scopus SJRQ1‘The sequential organisation of gossip talk’
Aslan, Tugba
Gossip, in its most general sense, means talking about absent third parties with regards to their strengths and weaknesses in an evaluative or informative tone. It is a common phenomenon and has been investigated from different perspectives of research such as human sciences, behavioural psychology, anthropology and so forth. Although it is a prevalent research topic amongst researchers of various disciplines, the sequential organisation of gossip talk still keeps its authenticity in terms of real-life talk-in-action research. This study aims to provide a micro-analysis of the sequential organisation of gossip talk adopting an emic perspective. The data set consists of a collection of 90 hours of audio data collected from a retirement home in Turkey. The data are analysed using Conversation Analysis. The results of the micro-analysis of authentic gossip talk points to a systematicity in gossip talk sequences in terms of initiation, response and closing.
AtıfScopus2WoS1İncele - MakaleAçık Erişim2020Scopus SJRQ2Switching linear quadratic Gaussian control of a flexible blade structure containing magnetorheological fluid
Sivrioglu, Selim; Bolat, Fevzi Cakmak
The present study suggests a new active control structure with a switching algorithm for control current of the electromagnetic actuator to suppress vibrations of a flexible blade element containing magnetorheological (MR) fluid. An identification model between MR fluid inside the blade and the electromagnetic actuator is utilized to derive the force equation. Since only one electromagnet is employed to suppress the blade vibration, a single-sided control actuation occurs in the proposed system. Therefore, the pulling force used for vibration control is generated by the actuator when the blade moves to downward direction. A switching linear quadratic Gaussian (LQG) controller that produces always a positive control input is designed to attenuate the blade vibrations. The LQG controller with switching is experimentally implemented under the impact and steady-state aerodynamic disturbances. The results of experiments show that the proposed switching controller is effective to attenuate vibrations of the flexible blade element.
AtıfScopus15WoS11OpenAlex13İncele - MakaleYalnız künye2018Scopus SJRQ3Real-time implementation of self-tuning regulator control technique for coupled tank industrial process system
Ayten, Kagan Koray; Dumlu, Ahmet; Kaleli, Aliriza
This article presents the self-tuning regulator control technique for a coupled tank liquid level system that often used in industry. An autoregressive with exogenous model has been used as the liquid process model with the self-tuning control implementation in order to track the desired tank level trajectories with disturbances and uncertainties of the system dynamics. The designed self-tuning controller has been sensitive to parameter variations of the nonlinear coupled tank system. The parameters of the proposed controller are periodically updated themselves during the process by means of online recursive least square method with the forgetting factor algorithm. In this way, the parameter variations and unwanted disturbances of the system are eliminated in real-time application. In order to demonstrate the efficiency of the self-tuning regulator control technique, the real-time studies have been executed. The obtained experimental results demonstrated that the proposed controller gives the better trajectory tracking performance and smaller magnitude in overshot and undershot than the designed classical proportional–integral and sliding mode controllers.
AtıfScopus11WoS5OpenAlex10İncele - MakaleAçık Erişim2017Scopus SJRQ2A new method for titania thin film production: Thermionic vacuum arc method
Şenay, Volkan; Özen, Soner; Pat, Suat; Geçici, Birol; Korkmaz, Şadan
In this research, transparent titania (TiO2) thin films were deposited on a glass microscope slide and on a flexible polyethylene terephthalate (PET) substrate under a high vacuum condition by means of the thermionic vacuum arc (TVA) method in a very short period of time (60 s). Optical properties and surface properties of the coated TiO2 surfaces are related to the structural changes of the coated layers due to ion energies and substrate effect. But obtained results are closely linked to literature values. Our analysis showed that the TVA method is an alternative method for low-temperature coatings and the produced films present important advantages for optical and industrial applications.
AtıfScopus7WoS6OpenAlex7İncele - MakaleAçık Erişim2015Scopus SJRQ3Experimental and numerical investigation of a novel energy-efficient vacuum glazing technology for low-carbon buildings
Cuce, Erdem
In this study, a recently developed innovative window technology called vacuum tube window is introduced, and its performance assessment is presented through an experimental and numerical research. The novel design of vacuum tube window consists of evacuated tubes surrounded by Argon as inert gas to eliminate conductive and convective effects inside the window and thus to produce a building element with remarkably low overall heat transfer coefficient (U-value). Heat transfer inside the window was modelled via a reliable commercial computational fluid dynamics software ANSYS FLUENT. The accuracy of simulations was verified by environmental chamber tests. For the vacuum tube diameter of 28 mm, an excellent agreement between experimental and numerical data was achieved. For different values of design parameters such as pane thickness, tube thickness, tube diameter and Argon gap, total heat loss and U-value of the vacuum tube window and optimum data were evaluated. Optimum tube diameter was found to be 60 mm in terms of thermal performance characteristics, cost, lightness and aesthetic issues. It is concluded that the vacuum tube window is able to provide a U-value lower than 0.40 W/m2K, which is very promising for both retrofitting of existing buildings and new-build applications.
AtıfScopus16WoS11OpenAlex18İncele - DergiIndoor and Built Environment
- DergiTransactions of the Institute of Measurement and Control
- DergiJournal of Composite Materials
- DergiDiscourse Studies
- DergiJournal of Thermoplastic Composite Materials
- DergiProceedings of the Institution of Mechanical Engineers. Part I: Journal of Systems and Control Engineering
- DergiJournal of Education