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
- MakaleYayıncıda açık erişim2026Scopus SJRQ1The effect of hawthorn vinegar, black mulberry syrup, and green tea on oral mucositis and oral health-related quality of life in individuals with diabetes: a single-blind, randomized controlled trial
Demiraǧ, Hatice; Akeren, Zahide
Objective – This study was designed as a single-blind randomized controlled trial to investigate the effects of hawthorn vinegar, black mulberry syrup, and green tea on oral mucositis and quality of life related to oral health in individuals with diabetes. Methods – Total of 120 participants were divided into four groups (hawthorn vinegar, black mulberry syrup, green tea, control; n = 30 each) and the study was completed. All participants completed the “Patient Information Form, ” “Oral Assessment Guide (OAG/ADR), ” and “Oral Health-Related Quality of Life Scale (OHQoL-UK)” before the study, on the 7th day, and after the study. In the experimental groups (hawthorn vinegar group, black mulberry syrup group, green tea group). In addition to routine oral mucositis treatment, patients with DM gargled for 1 min with diluted hawthorn vinegar [1 tablespoon (10 cc) mixed with 40 cc of water], pure black mulberry syrup, or green tea solution three times a day for 14 days, 15–20 min before meals. Results – Patients in the hawthorn vinegar group showed a decrease in oral mucositis and an increase in oral health-related quality of life at the interim measurement (day 7) and final test (day 14) measurements (p < 0.05). A negative correlation was found between the severity of oral mucositis and quality of life (p < 0.05). Conclusion – Although there was no difference between hawthorn vinegar and black mulberry syrup, they were found to be more effective than green tea in reducing oral mucositis and improving oral health-related quality of life, and all three complementary treatments were found to be effective. Clinical Trial Registration – identifier [NCT06481254]. https://register.clinicaltrials.gov/prs/beta/studies/S000E5O000000043/recordSummary.
- MakaleAçık Erişim2026Scopus SJRQ1Investigating the association of reading habits and attitudes with meaningful living: The mediating role of subjective well-being
Özbilen, Uğur; Güven, Ahmet Zeki; Şahin, Tuğrul Gökmen; Banaz, Emrullah
This study explores the impact of reading habits on Turkish language teachers' perception of a meaningful life, with a particular focus on the mediating role of subjective well-being. Drawing upon positive psychology and narrative identity theories, the research aims to highlight the cognitive and emotional mechanisms through which reading fosters existential meaning. Data were collected from 328 Turkish language teachers through validated self-report scales and analyzed using path analysis with structural equation modeling (SEM). Both direct and indirect effects were tested using bootstrapped mediation analysis. The results revealed that reading habits and attitudes significantly predicted perceptions of a meaningful life, both directly and indirectly via subjective well-being. Although the direct path was modest in effect, subjective well-being emerged as a strong mediator. No significant demographic differences were found regarding perceptions of meaningful living. The findings suggest that reading is not merely an intellectual activity but a multidimensional experience that contributes to personal meaning-making and psychological well-being. The study underscores the need for teacher education programs to integrate reading as a tool for holistic development, extending beyond professional competence to emotional and existential enrichment.
- MakaleYalnız künye2026Scopus SJRQ2Post-structuralist perspectives on global education: Reconstructing narratives and power dynamics in comparative education
Aksakallı, Ayhan
This article explores the transformative potential of post-structuralist theories in rethinking global education policies and comparative education practices. It critically examines the power dynamics underlying hegemonic narratives in education and highlights the ways in which these narratives marginalize local knowledge systems and reinforce inequalities. Using Foucault’s notions of regimes of truth and Deleuze and Guattari’s rhizomatic learning, the article demonstrates how post-structuralist frameworks challenge normative assumptions and propose alternative models based on equity, inclusion, and diversity. Local adaptations, counter-narratives, and strategies of resistance are analyzed as key mechanisms for negotiating and transforming global education policies in specific cultural and social contexts. The discussion emphasizes the importance of embracing epistemological pluralism and participatory governance to promote more equitable and inclusive educational practices. Concluding with directions for the future, the article underlines the relevance of post-structuralist approaches for advancing critical research and practice in comparative education.
AtıfOpenAlex2
İncele - MakaleAçık Erişim2026Scopus SJRQ2Investigation of the Effect of Niobium Addition on Fluidity and Mechanical Properties in Casting of Aluminum Alloys
Çolak, Murat; Yalçin, Önder
Aluminum and its alloys are important engineering materials widely used in the defense industry, industrial production, and machinery industry. Depending on the increase in quality expectations from aluminum casting alloys, castings are made with different alloy element additions. In the study, the effects of Nb addition to A356 aluminum alloy on casting properties were investigated with experimental studies. The Nb addition rate in the alloy was determined as 0.03%, 0.06% and 0.1%. Four-channel fluidity mold with varying section thicknesses, spiral fluidity mold and mechanical test mold were used in casting experiments. As a result, with the addition of Niobium, an increase in maximum tensile strength and % elongation was observed, while a decrease in fluidity properties was observed.
AtıfScopus4WoS5OpenAlex4İncele - MakaleAçık Erişim2026Scopus SJRQ1Optimization of surface modification parameters of calcium carbonate in the rotary-vibration mill with a fuzzy-based taguchi experimental method
Özdemir, Akın; Uçurum, Metin
Ultra-fine calcium carbonate (UCC) is used as a filler material in polymers, and after a surface modification (coating) process, its surface changes from hydrophilic to hydrophobic. However, conventional coating techniques such as raymond and pin mills are widely used in the industry; there is still a need for new, inexpensive, and practical methods. Mechanochemical technologies are considered one of the most effective alternatives. The rotary-vibration mill (RVM) works mechanically and is characterized by low investment and operating costs. There are three main contributions in this paper. First, a fuzzy-based Taguchi experimental design is proposed to analyze a fuzzy response under uncertainty. Second, the surface modification of UCC with stearic acid was carried out using RMV, with five modification parameters and an active ratio fuzzy response. Moreover, the results indicate that RVMs are an alternative mechanochemical surface modification technology for preparing coated calcium carbonate (CCC). Finally, particle size distribution (PSD), contact angle, XRD (X-Ray Diffraction Analysis), TGA-DTA (Thermogravimetric Analysis-Differential Thermal Analysis), FTIR (Fourier Transform Infrared Spectrophotometer), and SEM (Scanning Electron Microscopy) analyses were conducted for the coated calcium carbonate (CCC) acquired from the optimum conditions of the modification study.
- DüzeltmeYayıncıda açık erişim2026Scopus SJRQ1Correction: examination of trauma levels and earthquake stress coping strategies of university students who exercise and do not exercise after an earthquake
Çakır, Zekai; Erbaş, Ülfet; Gönen, Mevlüt; Naci, Ahmet; Güzel, Sema
Correction: BMC Psychology (2025) 13:867 https://doi.org/10.1186/s40359-025-03108-x. Following publication of the original article [1], the authors identified errors in references 67 and 110. The incorrect and correct references are listed below. Additionally, the authors requested the inclusion of the following statement in the Author Contributions section: "During the preparation of this manuscript, AI-assisted tools were used solely for language editing, grammar correction, and improving readability." Reference No. Incorrect reference Correct reference Nolen-Hoeksema S, Aldao A. Gender and coping: A meta-analysis of general research findings. J Cogn Psychother. 2012;25(1):35–56. https://doi.org/10.1146/annurev-clinpsy-032511-143109. Nolen-Hoeksema S. Emotion regulation and psychopathology: the role of gender. Annu Rev Clin Psychol. 2012;8:161–187. https://doi.org/10.1146/annurev-clinpsy-032511-143109 Kunz V. Sport as a post-disaster psychosocial intervention in Bam, Iran. In: the social impact of sport. Routledge; 2019. p. 39–49. https://www. taylorfrancis.com/chapters/edit/https://doi.org/10.4324/9781315875057-4/sport-post-disaster-psychosocial-intervention-bam-iran-valer Kunz V. Sport as a post-disaster psychosocial intervention in Bam, Iran. Sport Soc. 2009;12(9):1147–1157. doi:https://doi.org/10.1080/17430430903137803.
- MakaleAçık Erişim2026Scopus SJRQ2The mediating and moderating role of mathematical problem-solving skills in the relationship between primary school students' number sense and mathematics self-efficacy
Filiz, Tunahan; Kılıç, Zeliha
The present study analyzed the mediating and moderating role of mathematical problem-solving skills in the association between number sense and mathematics self-efficacy of primary school students. The present study employed the relational survey model, a quantitative research method, and utilized structural equation modeling for analysis. The study's sample group consisted of 307 fourth-grade primary school students. The Number Sense Test, the Mathematics Self-Efficacy Scale, and the Mathematical Problem Solving Scale were utilized as data collection instruments. The study's findings indicated a positive and significant relationship between number sense, mathematical problem solving, and mathematics self-efficacy among primary school pupils. The study indicated that students' mathematical problem-solving skills mediated between number sense and mathematics self-efficacy. The study demonstrated that number sense, mathematical self-efficacy, and problem-solving abilities are positively interrelated, highlighting the need for instructional designs and teacher training programs that integrate authentic, real-life problem-solving experiences to strengthen these interconnected skills in mathematics education. These findings suggest that integrating number sense development with structured problem-solving experiences may support students’ confidence in mathematics. Such instructional approaches may contribute to strengthening interconnected mathematical competencies in primary education.
- MakaleAçık Erişim2026Scopus SJRQ2Investigation of radiation shielding parameters of AZ61 magnesium alloy after electric arc spray and micro arc oxidation processes
Durna, İdris; Yılmaz, Demet; Çatar, Recep; Altun, Hikmet
In this study, the radiation shielding parameters of AZ61 magnesium (Mg) alloy, which is used in automotive, aerospace, and biomedical fields due to its low density, high specific strength, and biocompatible properties, were determined to investigate its usability in nuclear protection applications. Firstly, Al coating was applied to AZ61 Mg alloy by electric arc spray process and then ceramic oxide layer was obtained by micro arc oxidation (MAO) method. Then, the radiation shielding properties of AZ61 alloy were investigated. The radiation shielding parameters such as mass attenuation coefficient (MAC), mean free path (MFP), half-value layer (HVL) and effective atomic numbers (Zeff) were measured in gamma spectrometer with Ba-133 radioactive sources. The fast neutron removal cross-sections (ΣR), exposure buildup factors (EBF) were theoretically determined. The results revealed that the duplex coating (AZ61-Al-O) significantly enhanced the gamma shielding capability compared to the uncoated AZ61 alloy, achieving about 8.0 % higher MAC at 383.8 keV. Therefore, the AZ61-Al-O sample can be considered a promising lightweight material for radiation protection applications.
AtıfScopus3WoS3OpenAlex4İncele - MakaleAçık Erişim2026Scopus SJRQ2CMTS: An inorganic hole-transport material for efficient and stable perovskite solar cells through surface defect passivation
Sari, Fahriye; Ozel, Sultan Suleyman; Ozel, Faruk; Kus, Mahmut; Wilton, Richard Hall
A major challenge in PSCs lies in the carrier transport losses induced by band misalignment and elevated series resistance, which adversely impact the fill factor and device stability, ultimately restricting the overall power conversion efficiency. Due to their tunable band gaps, low fabrication cost, strong light-harvesting capability, adequate carrier lifetime, chemical stability, and environmentally benign nature, chalcogenide perovskites have emerged as highly promising materials for optoelectronic applications. In this study, the quaternary semiconductor nanostructure Cu2MnSnS4 (CMTS) was synthesized via a simple and cost-effective hot-injection method and investigated as an alternative inorganic hole transport layer (HTL) candidate. Indium tin oxide-based perovskite solar cells without any metal oxide interlayer achieved a remarkable PCE of 9.87% and retained more than 92% of their initial efficiency after 720 hours, demonstrating enhanced stability. These findings highlight the critical role of cation–anion interactions in improving device stability and underscore the importance of developing innovative, low-cost, and efficient inorganic HTL materials for the commercial advancement of perovskite solar cells.
- MakaleAçık Erişim2026Scopus SJRQ1Multi-parameter hydrodynamic analysis of pulsation frequency and waveform effects in a conical spouted bed: A CFD study
Çutay, Arif; Tozlu, Alperen; Kütük, Begüm; Özahi, Emrah
The hydrodynamic behavior of spouted beds is strongly influenced by inlet flow conditions, particularly under pulsating operation. In this study, a three-dimensional Eulerian–Eulerian two-fluid model coupled with the kinetic theory of granular flow was used to investigate the effects of pulsation frequency and waveform on the hydrodynamics of a conical spouted bed. Steady, sinusoidal, pulsatile, and square-wave inlet conditions were analyzed at 1, 3, 5, and 10 Hz. A multi-parameter evaluation framework was applied by combining spout height, temporal stability, axial gas and particle velocity distributions, and mixing characteristics. Spout height was determined using the connected αs=0.05 iso-contour, while temporal behavior was quantified through the mean spout height, standard deviation, coefficient of fluctuation, and fluctuation range. The results show that spout performance depends not only on instantaneous inlet velocity but also on the persistence of axial momentum transfer. Although the steady condition and some high-penetration pulsating cases produced relatively large instantaneous spout heights, they did not necessarily provide the most favorable hydrodynamic behavior because of rapid velocity decay, stronger fluctuations, or reduced structural coherence. Pulsation at 3 Hz provided the best overall balance by sustaining particle transport and improving temporal stability. The 5 Hz cases enhanced mixing but exhibited larger fluctuations, whereas the 10 Hz cases produced weaker and less coherent spout structures because of rapid attenuation of the imposed oscillations. Overall, the proposed framework demonstrates that spouting performance should be evaluated through the combined effects of penetration, stability, momentum persistence, and mixing.
AtıfOpenAlex1İncele - MakaleAçık Erişim2026Scopus SJRQ1GLOBAL BOUNDEDNESS IN A CHEMOTAXIS MODEL WITH SIGNAL-DEPENDENT MOTILITY AND LOGISTIC SOURCE WITH VARIABLE COEFFICIENTS
Ayazoglu, Rabil; Simsek, Ramazan
This paper deals with the following parabolic-parabolic chemotaxis system with growth source { u _ t = ∇· (γ (ε) ∇ u) - ∇· (χ (ε) u ∇v) + η (x) u - μ (x) u ^ α, x ∈Ω, t > 0,; v _ t = Δ v - v + u ^ β, x ∈Ω, t > 0, ]. under homogeneous Neumann boundary conditions in a smooth bounded domain Ω⊂ℝ^N (N≥ 2), and the parameters β >0, α >1, and γ ,χ are positive motility functions. Moreover, we assume that η (x) ^ m + α - 1/α - 1/(μ (x) - μ_ *) ^ m/α - 1 is integrable for some m ≥ 1, where η(·) and μ(·) are positive measurable functions satisfying μ(x) > μ_* > 0 for almost every x ∈Ω. Under these conditions, if α > max{2β, 2}, then the system possesses a unique global bounded classical solution.
- MakaleAçık Erişim2026Scopus SJRQ2Does sensory experiences affect satisfaction with street food?
Apak, Ömer Ceyhun
This paper explores the relationships between domestic tourists’ sensory experience, place dependence, and satisfaction in street food. The research was conducted based on responses from 438 domestic tourists who visited Izmir (Türkiye) and consumed street food. This study uses the relational survey method to examine the relationships between variables. The study revealed direct relationships between variables using SEM. Then, the mediating role of place dependence in the effect of sensory experiences on satisfaction was tested using PROCESS macros. The results show that sensory experiences (sight, smell, and taste) and place dependence positively and significantly affect satisfaction. In addition, Model 4 of the PROCESS macro found the significant mediating role of place dependence in the effect of sensory experiences on satisfaction.
- MakaleAçık Erişim2026Scopus SJRQ2Investigation of structural, optical and optoelectronic properties of eumelanin pigment
Aksoy Pehlivanoglu, Seval; Bayram, Sinan
In this work, the structural, morphological and optical properties of the eumelanin film fabricated on an FTO substrate were first investigated. Then, the effects of illumination intensitiy on the optoelectronic properties of the device fabricated on p-Si substrate (Eumelanin/p-Si) were investigated. The deposited film was identified as polycrystalline from the XRD pattern. The crystallite size was found to be approximately 13 nm. Surface morphology analysis of the film was carried out using atomic force microscopy (AFM) measurements. The surface roughness value (Rq) of the film was determined to be 55.7 nm. The film’s transmittance in the visible region is approximately 83%. The average refractive index in the visible region was calculated to be 1.39. The value of the eumelanin film was determined using both the Tauc technique and the Kubelka-Munk function. The direct and indirect optical bandgaps of eumelanin were calculated using both the Tauc method and the Kubelka-Munk function. The calculated direct and indirect optical bandgap values are, respectively, 2.79 eV and 1.96 eV for the Tauc method, and 2.65 eV and 1.79 eV for the Kubelka-Munk method. The electronic parameters of Eumelanin/p-Si heterostructure were derived from its characteristics. The charge transport mechanisms controlling the diode behavior of the eumelanin/p-Si structure were investigated and analyzed using the power law relationship. measurements performed at various illumination intensities indicated that the device exhibited photoconductive behavior. All the results obtained from this study demonstrate the potential of eumelanin/p-Si device to be used in photonic applications.
- MakaleAçık Erişim2026Scopus SJRQ1Keys to female athlete performance in Paris 2024
Boz, Emre; Adatepe, Eda; Çelik, Hüsniye; Kırkbir, Hakan; Öktem, Tuncay; Ünlü, Yılmaz; Öz, Ümit; Yılmaz, Büşra
The research was conducted to identify the key factors influencing the performance of Turkish female athletes participating in the Paris 2024 Olympic Games. In this context, seven female Olympic athletes who participated in the relevant organization volunteered to take part in the research. A semi-structured interview form prepared by the researchers was used to identify the participants’ views on the factors affecting their performance. Individual interviews were conducted with each participant at different times, and all interviews were recorded. All interview transcripts obtained were analyzed and visualized using MAXQDA 2020 software. In the study, the experiences of female athletes were grouped under five themes: factors most affecting performance, environmental factors, physiological factors, socio-cultural factors, and psychological factors. The findings show that the athletes’ experiences are not limited to athletic performance alone, but are also influenced by multidimensional factors such as organizational shortcomings, environmental conditions, psychological pressure, socio-cultural interactions, and physiological conditions. In the study, first-time participants were positively influenced by motivation, team support, and communication with foreign athletes, while experienced athletes, having higher expectations, criticized factors such as organizational shortcomings, hygiene, and nutrition issues. The study reveals that the factors affecting the performance of female athletes are multidimensional and interactive, emphasizing the importance of comprehensively considering physiological, psychological, environmental, and socio-cultural needs in the planning of international sports organizations. In particular, strengthening health support, nutrition services, cultural adaptation, and social support mechanisms are recommended as measures that will increase athletes’ performance and experience satisfaction.
AtıfOpenAlex1
İncele - MakaleYalnız künye2026Scopus SJRQ1Evening chronotype and highly processed food consumption: The mediating role of intuitive eating
Esgin, Özge; Ünal, G.
This study examined associations among chronotype, intuitive eating, and highly processed food (HPF) consumption and evaluated the mediating role of intuitive eating, with sex as a potential moderator. This cross-sectional study, conducted via an online survey in Türkiye from October 2025 to January 2026, included 610 adults. Participants completed the Morningness–Eveningness Questionnaire (MEQ), the Intuitive Eating Scale–2 (IES–2), and the Screening Questionnaire of HPF Consumption. The IES–2 comprises four dimensions: unconditional permission to eat (UPE), eating for physical rather than emotional reasons (EPR), reliance on hunger and satiety cues, and body-food choice congruence (B-FCC). Among participants, 20.3% had an evening chronotype, and 68% reported high HPF consumption. Eveningness was associated with higher UPE (β = 0.219, p = 0.002) and EPR (β = 0.148, p = 0.032) and lower B-FCC (β = −0.225, p = 0.002); however, a sex difference emerged only for EPR, with a weaker association in women (β = −0.155, p = 0.029). Lower MEQ scores were significantly associated with higher HPF consumption (β = −0.212, p < 0.001), with no significant sex differences. All analyses were adjusted for age and body mass index. Mediation analyses indicated that UPE (indirect effect: −0.013 for women; −0.022 for men) and B-FCC (−0.006 for women; −0.013 for men) had significant indirect effects linking chronotype to HPF consumption, with no moderating effect of sex. These findings suggest that intuitive eating mechanisms may partly explain the association between evening chronotype and higher HPF consumption.
- MakaleAçık Erişim2026Scopus SJRQ3Effects of Various Bleaching Chemicals on Some Surface Properties of Ebony Species (African, Black, and Macassar)
Ayata, Ümit
The concept of color is not always suitable for some trees according to customers’ preferences. The color of the wooden material changes with processes such as heat treatment, impregnation, bleaching, etc. When the color of the wooden material changes, the surface also undergoes changes in its inherent properties. African ebony (Diospyros crassiflora Hiern.), black ebony (Diospyros ebenum), and Macassar ebony (Diospyros celebica Bakh.) wood species were treated using a single-component bleaching chemical [oxalic acid (C2H2O4)] and double component bleaching chemical [hydrogen peroxide (H2O2) + sodium hydroxide (NaOH)] using a brushing technique. Subsequently, the characteristics of the changes that occurred were determined, including color parameters and whiteness index (WI*) values. The wood species exhibited different behaviors (increases and decreases specific to each test) in response to both bleaching agents. There was an observed increase in the a*, b* and C* values, while the ho values decreased for all wood species. Furthermore, WI* values in directions perpendicular and parallel to the fibers were reduced in all wood species by oxalic acid treatment.
- MakaleYalnız künye2026Scopus SJRQ2Frequency-Based Damage Detection with ANN and Seismic Behaviour Assessment of a Historical Masonry Tower
Demirtaş, Betül; Türker, Temel; Yanik, Yusuf; Dede, Tayfun
Nowadays, Artificial Neural Networks (ANNs) are widely used in damage detection because of their powerful computational and exceptional ability to recognize patterns in historical structures. This paper presents the seismic behaviour assessment and structural damage detection performance of the ANN trained with natural frequencies to identify the damage on the Hagia Sophia Bell Tower in Trabzon, Türkiye. Reduction in the stiffness of the structures causes changes in the structural dynamics. Natural frequencies, being key indicators in damage detection, were utilized as input parameters to train the ANN in this study. The study’s scope included updating of the initial finite element (FE) model constituted with SAP2000 software according to the experimental dynamic characteristics obtained from the Civil Engineering Vibration System developed by our work team. The seismic behaviour of the tower was also examined through time history analyses under the effect of strong earthquakes. The required data for the ANN analyses was obtained from the FE modal analysis of the tower. The ANNs dataset was generated separately by simulating both single and double damage scenarios. Possible twelve damage zones were determined according to the places where the highest stresses occurred in the earthquake analysis of the tower. The reduction in the elasticity modulus of each region defined on the tower was considered as damaging effect and used as ANN output parameter. It was shown that ANN trained with natural frequencies can effectively identify the location and severity of damage.
AtıfScopus6OpenAlex7İncele - MakaleYalnız künye2026Scopus SJRQ1Reference-Invariant Permittivity Determination of Low-Loss Solid Dielectric Samples Using Spectral Free-Space Measurements Without Prior Thickness
Hasar, Ugur C.; Ali, Husain; Kaya, Yunus
An extraction method has been proposed for relative permittivity determination εrs of low-loss solid dielectric samples using free-space measurements. It relies on a reference-plane invariant expression with no thickness information a priori, making resistant to conventional free-space measurement errors which may arise from improper information of sample position and thickness. In addition, the method constructed by the state transition matrix (STM) uses closed-form expressions – a feature distinguishes our method from previous STM-based extraction methods requiring a numerical tool or optimization procedure. Furthermore, provided that the sample thickness L is evaluated, as a by-product, first using the derived closed-form objective function away from any thickness-resonance region, the proposed method then determines εrs and L free from thickness-resonance effect, which otherwise can introduce ripples around or at the thickness-resonance frequency. Numerical analysis is performed to validate and assess the performance of our method. Free-space measurements at X-band of two low-loss samples with substantial thickness are performed for validation and accuracy comparison of our method against other similar methods.
- MakaleAçık Erişim2026Scopus SJRQ1Integrating artificial intelligence into preservice teacher education: enhancing AI literacy and digital material design competency
Gulen, Hilal Nur; Kucuk, Sevda
The rapid advancement of Artificial Intelligence (AI) has transformed educational tools and practices. Integrating AI into instruction supports complex thinking, enriches teaching, and helps educators in material creation and visualization. Therefore, it is essential to equip both students and educators with AI literacy and digital material design competencies in order to support pedagogically sound and ethically responsible instructional practices. Within this context, the present study examines the extent to which an AI-integrated instructional technology course influences pre-service teachers’ AI literacy and digital material design competencies, as well as their perceptions and experiences of learning within an AI-integrated instructional environment. Using a mixed-methods approach, 50 pre-service social studies teachers (41 female, 9 male) participated in a semester-long course. Data were collected through the Artificial Intelligence Literacy Scale, Digital Material Design Competency Scale, and semi-structured interviews. Paired sample t-tests indicated significant gains in both AI literacy and digital material design competencies, with large effect sizes. Qualitative and quantitative findings showed that AI tools not only improved technical abilities but also enhanced pedagogical thinking. The study highlights the importance of AI-integrated curricula in preparing future teachers for modern educational challenges.
AtıfScopus2WoS1OpenAlex3İncele - MakaleAçık Erişim2026Scopus SJRQ4ANDROSACE ARMENIACA SUBSP. VULCANICA SEFALI & EROĞLU: A NEW TAXON FROM EASTERN ANATOLIA, TÜRKIYE
Sefali, Abdurrahman; Korkmaz, Eren; Eroğlu, Hüseyin
A new taxa, Androsace armeniaca subsp. vulcanica Sefalı & Eroğlu nov. (Primulaceae) is described and illustrated from Ağrı Province, Türkiye. It is morphologically assigned to Androsace sect. Andrapsis based on its long scape and small flower habit and the presence of glandular hairs covering the calyx and scape. This new taxon closely resembles A. armeniaca subsp. armeniaca var. armeniaca and A. armeniaca subsp. armeniaca var. macrantha, but is easily distinguished by its overall habitus, smaller flowers, distinct corolla and calyx characteristics (including the color and lobe shape), pedicel length and habitat (volcanic areas).