Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Dertli, Enes(114)
- Kaya, Yunus(48)
- Şahin, Engin(48)
- İspirli, Hümeyra(47)
- Özen, Soner(38)
- Şenay, Volkan(37)
- Pat, Suat(36)
- Kutlu, Naciye(32)
- Artar, Musa(31)
- Can, Zehra(31)
- Korkmaz, Şadan(31)
- Yilmaz, Mustafa Tahsin(31)
- Öner, Erdal(31)
- Bayram, Sinan(30)
- Cuce, Erdem(30)
- Ertugrul, Mehmet(29)
- Hasar, Ugur Cem(29)
- Ecem Bayram, Nesrin(28)
- Mercan, Emin(28)
- Ayata, Ümit(27)
- Bayraktar, Bülent(27)
- Çolak, Murat(23)
- Özdemir, Akın(23)
- Ayazoglu, Rabil(22)
- Cuce, Pinar Mert(22)
- Sert, Durmuş(22)
- Bayram, Ozkan(21)
- Kamiloğlu, Aybike(21)
- Dirican, Ebubekir(20)
- Kadakal, Mahir(20)
- Abdioglu, Murat(19)
- Birinci, Ahmet(19)
- Tozlu, Alperen(19)
- Gerçek, Yusuf Can(18)
- Taylan, Osman(18)
- Cinar, Mehmet(17)
- Gul, Volkan(16)
- Hasar, Ugur C.(16)
- Kadakal, Huriye(16)
- Kara, Yakup(16)
Yayınlar
- MakaleAçık Erişim2021Scopus SJRQ1Effects of ozone treatment to milk and whey concentrates on degradation of antibiotics and aflatoxin and physicochemical and microbiological characteristics
Sert, Durmuş; Mercan, Emin
The aim of this study was to investigate the effects of the ozone treatment (OT) to milk concentrate (MC) and whey concentrate (WC) on the physicochemical and textural properties, as well as, on the microbial, antibiotic, and aflatoxin content. For that purpose, OT was applied to MC and WC samples 0 (control), 5, 10, 15, 30, or 60 min. OT (60 min) achieved 18.9 and 9.9% degradation of aflatoxin M1 in MC and WC, respectively. OT caused degradation of β–lactam, and tetracycline in concentrates. Volume mean diameter of MC was increased by OT, those of WC was decreased. The firmness and consistency values of ozone-treated concentrates were lower than the control groups. OT decreased the cohesivity of MC. OT increased the lightness of samples, while it decreased yellowness. In MC and WC samples, OT was effective in reducing the microbial load. The degradation of antibiotics and aflatoxin, and reducing the microbial load of concentrates by OT are crucial for human health and the processing of dairy products.
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İncele - MakaleAçık Erişim2021Scopus SJRQ3An Action Research on Improving Classroom Communication and Interaction in Social Studies Teaching
Aksoy, Mutlu; Ceylan, Tuncay
The aim of this research is to reveal how communication and interaction in classrooms can be enhanced with the communicative approach education provided for social studies teachers. The participants of this research were five social studies teachers working at secondary schools and their 7th grade students, N = 110. The data collection tools adopted in this research were video and audio recordings, documents, semistructured interview forms, and stimulated recall interview forms. The data obtained from recordings of lessons were analyzed using the communicative approach, and the data obtained from document review and interview were analyzed using the content analysis method. The results of the study show that social studies curriculum contains items that require both dialogical and authoritative discourses and that the course books are prepared accordingly, but teachers as the practitioners of the program do not conduct their lessons accordingly. Instead, all the teachers participating in the research used only authoritative (interactive/noninteractive) approaches and they did not include dialogical (interactive/noninteractive) approaches at all. This situation, which is seen as a problem in terms of conducting successful in-class communication and interaction, has been solved in three action cycles with one of the teachers. The teacher who used only authoritative (interactive/noninteractive) approaches in her lessons prior to the trainings started to include dialogical (interactive/noninteractive) approaches too. It was also observed that the teacher's impression of the lessons carried out by adopting the communicative approach model was positive. As a result of the research, it was concluded that the communicative approach model is applicable in the social studies course. It can be said that the trainings given to the teachers created awareness about the use of the communicative approach model in classroom communication and interaction and provided benefits in diversifying discourse styles.
AtıfScopus7WoS3OpenAlex13İncele - MakaleAçık Erişim2021On Involute-Evolute Curve Pair in Semi-Euclidean Space
Aydın, Tuba Ağırman; Kocayigit, Hüseyin
In this study, a kind of generalized involute and evolute curve pair is considered in 4 dimensional semi Euclidean space with 2 index. The curvatures and the associated Frenet Frame of this kind of generalized involute-evolute curve pair are presented.
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İncele - MakaleAçık Erişim2021Scopus SJRQ1Discrete sizing design of steel truss bridges through teaching-learning-based and biogeography-based optimization algorithms involving dynamic constraints
Artar, Musa; Carbas, Serdar
In this paper, Teaching-Learning Based Optimization (TLBO) and Biogeography-Based Optimization (BBO) algorithms are presented to examine the optimum discrete sizing design of steel truss steel bridges for minimizing the structural weights. Both proposed nature-inspired metaheuristic optimization algorithms are encoded in MATLAB with integration of a structural analysis program (SAP2000) via open application programming interface (OAPI). At the end, optimal steel profiles are selected from available discrete section lists by satisfying the structural restrictions, such as stress and displacement, involved by American Institute of Steel Construction-Allowable Stress Design (AISC-ASD). Additional to these, optimum discrete sizing design process is performed for the cases with and without dynamic constraints, which are adopted from natural periods of the bridge structures with respect to the mode shapes. The algorithmic performance of the proposed algorithms outperforms on both planar and spatial steel truss bridges. To prove this obtained optimal solutions are compared with previously reported optimum designs attaining via different metaheuristics. The final optimum discrete sizing designs of the steel truss bridges reveal that the proposed TLBO and BBO algorithms can easily be applied to discrete nonlinear programming problems.
AtıfScopus37WoS34OpenAlex37İncele - MakaleYalnız künye2021Scopus SJRQ1Exploring Self-Regulation Skills in the Context of Peer Assisted Writing: Primary School Students’ Sample
Sarikaya, İsmail; Yılar, Ömer
The purpose of this research is to determine the self-regulation behaviors demonstrated by the 4th grade students in the writing process within the scope of peer-assisted writing activities. The aims of this research include developing a measurement tool to identify the self-regulation behaviors exhibited by primary school students during the writing process. The study was designed in accordance with the qualitative research approach. The data were acquired through observation and video recordings. The study was carried out with 4th grade students in primary school and conducted in two stages as a pilot and main study. The pilot application was carried out with six students. The main study was carried out in two different 4th graders with 30 students. A cluster random sampling method was used to determine the research group. In order to determine the self-regulation behaviors demonstrated by students during the writing process, a semi-structured observation form was used. Expert opinions were taken for the validity and reliability of the created form. The data were subjected to descriptive and content analysis. As a result of the study, some self-regulation behaviors were determined that demonstrated by 4th grade students. These behaviors are presented under seven topics: regulation of environmental factors, regulation of sensory and motivational factors, planning, strategy development, regulation of temporal and social factors, monitoring, and evaluation.
AtıfScopus4WoS5OpenAlex8İncele - MakaleAçık Erişim2021Scopus SJRQ2Determination of pendulum hardness (KÖnig method) values against artificial weathering in water-based varnishes applied to some wood species after heat treatment (thermowood)
Ayata, Ümit; Çakicier, Nevzat
Scots pine, beech, and oak are the most important tree species in the furniture sector in Turkey. In this study, the aim is to determine pendulum hardness (König method) values against artificial aging in water-based varnishes applied to some wood species after heat treatment. For this purpose, Scots pine (Pinus sylvestris L.), sessile oak (Quercus petreae L.), and Eastern beech (Fagus orientalis L.) wood samples were heat-treated at 190 °C for 2 h and at 212 °C for 1–2 h according to the ThermoWood method. Later, one-and two-component water-based varnishes (WBVOne-Comp. and WBVTwo-Comp.) were applied to the material surfaces in accordance with the manufacturer’s recommendations for layer thickness for industrial applications. The materials were exposed to UV light using UV-A 340 nm fluorescent lamps for 144, 288, and 432 h in a QUV accelerated weathering tester. After these weathering periods, pendulum hardness values were determined. It was found that hardness values increased after weathering, and that WBVTwo-Comp. gave higher values than WBVOne-Comp..
AtıfScopus4WoS4OpenAlex3İncele - MakaleAçık Erişim2021Scopus SJRQ1The relationship between the mathematical reasoning skills and video game addiction of Turkish middle schools students: A serial mediator model
Öztürk, Mesut; Sarikaya, İsmail
The reasoning is required for important mathematical skills such as understanding mathematics, problem-solving, and proving. Therefore, it is crucial to examine the reasoning skills of individuals. This study was conducted to determine the serial mediator effect of the negative automatic thoughts and self-regulation within the relationship between reasoning skills and video game addiction of middle-school students. The correlational research model among the quantitative research designs was used in this study which was conducted with the participation of 468 middle-school students. Reasoning skill scale, video game addiction scale, negative automatic thoughts scale, and perceived self-regulation scale were used in the data collection process. The obtained data were analyzed with correlation analysis and mediator variable analysis. In the end, the results indicated that negative automatic thoughts and self-regulation skills had a mediator effect between middle-school students’ video game addiction and reasoning skills.
AtıfScopus16WoS9OpenAlex20İncele - MakaleYalnız künye2021Comparison of kinetics of Cr (III) ions removal from wastewater using raw and activated montmorillonite minerals
İrdemez, Şahset; Durmuş, Gül; Kul, Sinan; Torun, Fatma Ekmekyapar; Bingül, Züleyha
In this study, kinetics of the removal of Cr (III) from the waters by adsorption have been investigated using montmorillonite natural clay that was obtained from the vicinity of Narman, Erzurum in Turkey. Activation energy, thermodynamic values and adsorption kinetics were determined. In addition, the trials were repeated by subjecting to the same adsorbent activation process. The values found for these two adsorbents were compared. As a result of the experiments, the parameters affecting the adsorption kinetics were examined. It was determined that the adsorption process could be best depicted by pseudo second order reaction kinetics. Using pseudo second order reaction rate constants, ΔH° =-25.791 kJ mol-1 and ΔS° = 106.19 joule mol-1 were calculated for raw adsorbent. For the activated adsorbent, ΔH° =-18,806 kJ mol-1 and ΔS° = 79.37 joule mol-1 were calculated. That ΔG° increases as temperature increases indicates; adsorption is more spontaneous at high temperatures. Negative ΔH° values show that the reaction is exothermic. The positive values of ΔS° indicate increased randomness at the adsorbent/solution interface during the adsorption of chrome.
AtıfScopus2WoS1OpenAlex3İncele - 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 Erişim2021Scopus SJRQ2Effect of a Training Program about Noticing and Expressing Feelings on Forgiveness
Kaya, Feridun; Odacı, Hatice
This study aimed to investigate the effect of training about noticing and expressing feelings on individual tendency to forgive. The experimental and control groups in the research comprised 34 students, 18 female and 16 male with ages from 19 to 23 years (M = 21.00, SD =.65), attending Bayburt University. Data collection tools included the Heartland Forgiveness Scale and the Personal Information Form prepared by the researchers. The research was completed in accordance with a random, pre-test-post-test control group experimental model. The one-way analysis of covariance (ANCOVA) was utilized for data analysis. The results showed that the training program about noticing and expressing feelings had a significant effect on individuals’ forgiveness. In addition, the mean of the forgiveness post-test scores for individuals enrolled in the training program were found to be higher than the post-test scores for individuals who did not participate.
AtıfScopus4WoS3OpenAlex3İncele - MakaleYalnız künye2021Scopus SJRQ2Frozen image analysis of a superconducting magnetic levitation system consisting of multi-surface superconductor and Halbach array permanent magnet configuration
Cansiz, Ahmet; Reisoglu, Ahmet F.; Ozturk, Kemal; Abdioglu, Murat
Levitation strength provided by high temperature superconductors are limited for device applications. Although superconducting material properties are continuously improving, there is still strong necessity of efficient design mechanisms for the superconducting magnetic levitation systems. Studies in the last decades have shown that combining multi-surface superconductor and permanent magnet components in optimum configurations has improved the levitation forces. In this respect, Halbach arraying permanent magnets interacting with multi-surface superconductors has become one of the most utilized methods. This paper investigates frozen image modeling of the levitation and guidance forces on a particular levitation system, which consists of a permanent magnet guideway and high temperature superconductor car body. The levitation enhancement is investigated for three configurations according to force interactions between the guideway and car body. These configurations are based on the use of single permanent magnet-single superconductor, Halbach array permanent magnets-single superconductor and Halbach array permanent magnets-multi-surface superconductors. The vertical and guidance forces for the present configurations were calculated in terms of field cooling and zero field cooling conditions by using frozen image model with magnetic dipole approximation. The predicted force calculations are analyzed in terms of vertical and lateral traverses of the car body respect to guideway for particular measurement distances. The force analysis provided by frozen image model qualitatively agree with the previously obtained experimental data.
AtıfScopus8WoS9OpenAlex9İncele - MakaleAçık Erişim2021Scopus SJRQ3Cycling as transportation & COVID-19: Advantages of shared bicycles during epidemics
Saatchian, Vahid; Azimkhani, Amin; Türkmen, Mutlu; Laein, Dorri Dolatkhah
In addition to the environmental problems that have plagued human life in recent decades, the outbreak of the coronavirus epidemic has endangered people's health and adversely affected their lives in other ways. Therefore, the present study aimed to investigate the advantage of using shared bicycles (SB) during the outbreak of epidemics. For this purpose, 310 male subscribers of an SB system were examined. The research tool was a questionnaire taken from studies. The results showed that the environmental and health advantages were favourable, but the place advantage indicated a relatively unfavourable situation. The results of the structural equation model also showed that the advantages of using an SB based on the highest impact are the motivational advantage, health advantage, environmental advantage, social advantage, financial advantage and place advantage. These results can provide useful solutions for governments to reduce environmental risks and maintain health and physical activity during epidemics.
AtıfScopus8OpenAlex10İncele - MakaleAçık Erişim2021Scopus SJRQ3Application of Third-Order Schemes to Improve the Convergence of the Hardy Cross Method in Pipe Network Analysis
Niazkar, Majid; Türkkan, Gökçen Eryilmaz
In this study, twenty-two new mathematical schemes with third-order of convergence are gathered from the literature and applied to pipe network analysis. The presented methods were classified into one-step, two-step, and three-step schemes based on the number of hypothetical discharges utilized in solving pipe networks. The performances of these new methods and Hardy Cross method were compared by solving a sample pipe network considering four different scenarios (92 cases). The results show that the one-step methods improve the rate of convergence of the Hardy Cross method in 10 out of 24 cases (41%), while this improvement was found to be 39 out of 56 cases (69.64%) and 5 out of 8 cases (62.5%) for the two-step and three-step methods, respectively. This obviously indicates that the modified schemes, particularly the three-step methods, improve the performance of the original loop corrector method by taking lower number of iterations with the compensation of relatively more computational efforts.
AtıfScopus7WoS4OpenAlex7İncele - MakaleYalnız künye2021SOME NEW INEQUALITIES FOR (α, m1, m2)-GG CONVEX FUNCTIONS VIA GAMMA AND INCOMPLETE GAMMA FUNCTIONS
Kadakal, Mahir
In this study, we introduced the concept of (α, m1, m2)-GG convex functions; then we obtained Hermite-Hadamard type inequalities for these type of function classes via gamma and incomplete gamma functions together with Hölder, power-mean, Hölder-İşcan and improved power-mean integral inequalities.
- MakaleYalnız künye2021Scopus SJRQ4Investigating the role of social functions of parks on adherence to physical activity of elderly people during an epidemic disease (COVID-19)
Azimkhani, Amin; Honari, Habib; Türkmen, Mutlu; Gholamian, Javad; Saatchian, Vahid; Salari, Reyhane
Introduction: The importance of desirable physical activity as a deterrent and risk factor for the elderly is well known. The present study was conducted to investigate the role of parks’ social functions on adherence to physical activity in elderly people in Mashhad During epidemic disease (COVID-19). Method: This cross-sectional study was performed using a structured interview technique and a multi-part questionnaire on 100 elderly people. Sampling was done in two stages using a systematic random method. Results: Based on the results, it was found that there is a positive and significant relationship between the social function of parks and its components with adherence to physical activity in the elderly (P <0.05) and well as 18% of adherence to physical activity changes is related to the social function of parks. Conclusion: The findings of this study showed that many factors are affecting physical activity in elderly people, which understanding these factors help educators and other health professionals in designing appropriate intervention programs. Maintaining regular PA during self-isolation is important for the prevention of future chronic health conditions due to a sedentary lifestyle. During crises, functional medical care and vital societal services are of the highest priority.
AtıfScopus1OpenAlex1İncele - MakaleAçık Erişim2021Scopus SJRQ4The opinions of mathematics teacher candidates who have received a STEM training on STEM and the activities they designed in the class
Demir, Betül Küçük
This study has been conducted to investigate the opinions of mathematics teacher candidates on science, technology, engineering and mathematics (STEM) training and the activities designed by them. It has been carried out using the case study method, which is one of the qualitative research patterns. In this study, semi-structured interview forms and activity cards have been used to gather data. While semi-structured interview forms served to elicit teacher candidates’ opinions on STEM, activity cards were employed to ask them to design an activity in which they could put their training on STEM into practice. The study has been conducted with 34 senior mathematics education students and the data obtained have been analyzed using the content analysis method. It has been concluded that mathematics teacher candidates have positive views on STEM training. The activities designed by the candidate teachers can be categorized under four categories, which are interdisciplinary, the engineering field it is related to, the preferred method and the activities that are not suitable for STEM. Teacher candidates should be trained on how to integrate STEM education into their lessons. Stem activity examples should be presented to teacher candidates for applicability.
AtıfScopus6OpenAlex10İncele - MakaleAçık Erişim2021Scopus SJRQ1Effect of sample deformation in longitudinal axis on material parameter extraction by waveguides
Hasar, Ugur Cem; Kaya, Yunus; Ozturk, Gokhan; Ertugrul, Mehmet
An analysis was performed for examining the consequences of sample deformation in longitudinal axis in the sample-loaded non-resonant waveguide techniques. Vertical and horizontal deformations were first simulated to understand the change in field distributions and corresponding scattering parameters. Then, effects of sample length, dielectric constant, and loss factor for these deformations on extracted electromagnetic properties were analyzed using simulated results. Finally, S-parameter measurements were carried out to understand the effect of vertical deformation on permittivity results and to examine any improper sample preparation by hand-made and machine-made samples by applying a statistical model based on mean, standard deviation, coefficient of variation, and confidence interval. It was noted that extracted dielectric constants of each tested dielectric sample (polyethylene, polypropylene, polyvinyl-chloride) were within the confidence interval range of 90% while their retrieved loss factors were within the confidence interval range of 90%, 95%, or 98%.
AtıfScopus3WoS3OpenAlex3İncele - MakaleAçık Erişim2021Scopus SJRQ1Existence and multiplicity of solutions for a Schrödinger–Kirchhoff type equation involving the fractional p(. ,.) -Laplacian operator in RN
Ayazoglu, Rabil; Saraç, Yeşim; Şener, S. Şule; Alisoy, Gülizar
In this paper, by using variational approach, Mountain Pass Theorem and Krasnoselskii’s genus theory, we show the existence and multiplicity of solutions for a Schrödinger–Kirchhoff type equation involving the fractional p(. ,.) -Laplacian in fractional Sobolev space with variable exponent. We also establish a Bartsch–Wang type compact embedding theorem for fractional Sobolev space with variable exponent.
AtıfScopus21WoS22OpenAlex22İncele - MakaleAçık Erişim2021Scopus SJRQ3Synthesis of alternan-stabilized zinc nanoparticles: morphological, thermal, antioxidant and antimicrobial characterization
Yücel, Nur; İspirli, Hümeyra; Mercan, Emin; Erdoğan, Ümmügülsüm; Dertli, Enes
This study aimed to synthesize zinc nanoparticles with antimicrobial and antioxidant activities using alternan (ZnNPs-Alt) produced by Lactobacillus reuteri E81 as the stabilizing agent. For the characterization of the ZnNPs-Alt, UV–vis spectroscopy, SEM, TEM and EDX analysis, XRD, FTIR and DSC analysis were applied. The functional role of ZnNPs-Alt was tested by determination of their antioxidant activities by DPPH and CUPRAC methodologies and their antibacterial and antifungal activities. Results of this study demonstrated that alternan was utilized as a successful stabilizer to produce crystalline, thermally stabile ZnNPs-Alt with a particle size of ∼ 100 nm. Importantly, strong antioxidant and antimicrobial activities were observed for ZnNPs-Alt in a concentration dependent manner. These findings confirmed the role of alternan as a stabilizing agent for the production of ZnNPs-Alt with functional roles.
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İncele - MakaleAçık Erişim2021Scopus SJRQ1Processing of skim milk powder made using sonicated milk concentrates: A study of physicochemical, functional, powder flow and microbiological characteristics
Sert, Durmuş; Mercan, Emin; Dinkul, Muhsin; Aydemir, Serdar
The impact of sonication treatment (0, 5, 15, 30, and 60 min) of skim milk concentrates on physicochemical, functional, powder flow behaviour, and microbiological properties of milk powders was investigated. Sonication resulted in higher firmness and consistency of concentrates with increasing treatment time. In milk powders, higher L∗ and a∗ values were observed in sonicated samples. D[4,3] parameter of milk powders was between 8.1 and 255.0 μm, and sonication for 60 min decreased this value. Sonication significantly decreased the caking, cohesion, and compaction properties of samples. The flow stability of sonicated samples was higher than that of the control. Sonication can result in improved flow characteristics of milk powders in terms of caking, cohesion, and compaction. These observations could relate to effects of sonication on casein micelle, whey proteins denaturation, whey/whey or casein/whey aggregation. Sonication of milk concentrates was also effective in reducing the microbial counts of milk powders.
AtıfScopus14WoS13OpenAlex13İncele