Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Gul, Muhammet(74)
- Akkurt, Nevzat(39)
- Celik, Erkan(35)
- Serdar, Osman(35)
- Güler, Ömer(33)
- Kutlu, Banu(32)
- Paksoy, Mehmet Yavuz(32)
- Yucesan, Melih(31)
- Tekin, H.O.(30)
- Yildirim, Numan(30)
- Yildirim, Nuran Cikcikoglu(30)
- ALMisned, Ghada(28)
- Mete, Suleyman(26)
- Danabas, Durali(20)
- Ince, Muharrem(20)
- Serin, Faruk(20)
- Ates, Mehmet(19)
- Can, Erkan(19)
- Onat, Onur(18)
- Benzer, Fulya(17)
- Kocabaş, Mehmet(17)
- Tanyol, Mehtap(17)
- Kizak, Volkan(16)
- Alataş, Mevlüt(15)
- Aydin, Rahmi(15)
- Kahraman, Gökhan(15)
- Kilic, G.(15)
- Polat, Alper(15)
- Susam, Selim Orhun(15)
- Xu, Qian(15)
- Aslan, Naim(14)
- Guler, Omer(14)
- Gürler, Nedim(14)
- Karatay, Gülnaz(14)
- Utku, Anıl(14)
- Yildirim, N. C.(14)
- Özkul, İskender(14)
- Demirol, Ferhat(13)
- Erguven, Gokhan Onder(13)
- Firat, Erhan(13)
Yayınlar
- MakaleYalnız künye2023Scopus SJRQ2Detection of hateful twitter users with graph convolutional network model
Utku, Anıl; Can, Umit; Aslan, Serpil
Today, hate speech is widespread and persistent in various forms on social networking platforms, targeting different minority groups. These attacks can be carried out using various factors such as racial, religious, gender, and physical disability, etc. Considering the number of people and their interactions, social networks are the most important channels through which these discourses spread. The social network structure is considered a set of nodes and edges and is very suitable for the graph structure. The multidimensional structure of social networks carries social network data from Euclidean space to non-Euclidean space. In non-Euclidean space, the graph structure is used to represent data effectively. In this respect, solving the hate speech problem with graph-based methods in a complex dimensional space can produce more impressive results. In this study, a powerful method based on the Graph Convolutional Network (GCN) model, which is rarely used in this field, was proposed for the detection of hateful Twitter users in social networks. Well-known machine learning methods were used to measure the performance of this method. According to the results obtained, the proposed GCN model gave the most successful result.
AtıfScopus15WoS10OpenAlex16
İncele - MakaleYalnız künye2023Scopus SJRQ1Latent heat thermal energy storage in a shell-tube design: Impact of metal foam inserts in the heat transfer fluid side
Ghalambaz, Mehdi; Sheremet, Mikhail; Raizah, Zehba; Akkurt, Nevzat; Ghalambaz, Mohammad
The improvement of heat transfer in latent heat thermal energy storage (LHTES) system is a crucial task. In the current study, the impact of diverse metal foam (MF) layer arrangements on heat transfer fluid (HTF) within a shell-tube LHTES is explored. Six distinct cases (A-F) with varied MF coverage percentages and layer dimensions were assessed. The local thermal non-equilibrium model was utilized to take into account the PCM and MF temperatures. The finite element method was used for solving the partial differential equations. The impact of MF configurations and inlet pressures (250 Pa, 500 Pa, and 750 Pa) on the thermal energy storage/release was addressed. Cases A-C, featuring a 50 % MF concentration, exhibit shorter melting times than Cases D–F, with decreasing MF concentrations. A higher MF concentration improves the melting process due to increased thermal conductivity and lower thermal resistance on the HTF side. Cases D–F, with a centralized MF layer and decreasing concentrations from 25 % to 6.25 %, display progressively shorter melting times, suggesting that a lower MF concentration leads to more efficient melting. Solidification times also decrease with increasing inlet pressures across all cases. Reynolds numbers, influenced by average HTF tube outlet velocity, vary substantially across cases and inlet pressure differences. Cases A-C demonstrate similar Reynolds numbers for each inlet pressure difference, while Cases D–F show a more pronounced increase in Reynolds numbers as the MF layer is reduced and flow resistance drops. Cases A (50 % MF layer) and F (6.5 % MF layer) provide the quickest charging and discharging times due to their unique combination of MF layer properties and inlet pressures. The study highlights the need to consider MF layer composition and inlet pressure when designing optimal LHTES systems for efficient energy storage/release.
AtıfScopus11WoS10OpenAlex11İncele - MakaleYalnız künye2023Scopus SJRQ2Does surgery cause anxiety, stress and fear in geriatric patients?
Karabulut, Neziha; Gürçayır, Dilek; Abi, Özlem; Kızıloğlu Ağgül, Beyzanur; Söylemez, Nilgün
Background: Because of physiological changes in geriatric patients, their surgical process differs from that of young adults. In this regard, the perioperative period is an extremely risky time for geriatric patients. The present study examined preoperative fear, anxiety, and perceived stress levels as well as the factors affecting them in elderly patients prior to surgical intervention. Methods: This study adopted a cross-sectional descriptive design. The study sample consisted of geriatric patients (n = 407) scheduled for elective laparoscopic cholecystectomy in a research and training hospital in northeast Turkey. Data were collected by the researchers using the personal information form, Perceived Stress Scale (PSS-10), Surgical Fear Questionnaire (SFQ) and Anxiety Specific to Surgery Questionnaire (ASSQ). In the data analysis, descriptive statistics, the t-test in independent groups, one-way analysis of variance (ANOVA), correlation analysis and Bonferroni tests for post hoc analyses were used. Results: On the PSS–10, the mean score was higher for the 75-and-older age group, single patients, patients with a disease requiring medication, and those who had previously undergone surgery (P < 0.05). On the ASSQ, the mean score was lower for patients aged 65–69, university graduates, patients without children, and those without a disease requiring medication (P < 0.05). On the SFQ, the mean score was higher for the 75-and-older age group, primary school graduates, and single patients (P < 0.05). Conclusion: It was determined that being single, having a chronic disability, and advancing age had an effect on the patients' surgery-specific anxiety, perceived stress, and fear of surgery. Long-standing chronic diseases can negatively affect both stress and anxiety levels of individuals.
AtıfScopus14WoS13OpenAlex13
İncele - MakaleYalnız künye2023Scopus SJRQ2Engineering Properties of Geopolymer Mortars Containing Industrial Steel Shavings
Gülmez, Nihan; Koçkal, Niyazi Uğur
The purpose of using waste materials is to prevent the unnecessary use of resources and to reduce the amount of waste. Geopolymer, developed as an alternative to cementitious materials, prevents the depletion of natural resources and saves a large amount of energy. This paper presents the effect of waste steel shavings on the improvement of physical and mechanical properties of geopolymer mortars. For this purpose, geopolymer mortars were produced by using two binder types [slag (BFSb) and silica fume] as well as steel shavings in five different replacement percentages (0%, 2.5%, 5%, 7.5% and 10%) by volume instead of aggregate. A series of experiments on geopolymer mortars were carried out to determine properties such as bulk density, water absorption, apparent porosity, sorptivity coefficient, splitting tensile strength, flexural strength and compressive strength. Results showed that steel shavings recovered from metal processing and forming sector were highly effective at improving engineering properties of geopolymer mortars. Furthermore, although replacement of 20% by volume of BFSb with silica fume improved properties of geopolymer mortar, it was observed that the use of silica fume at higher ratios reduced mechanical properties by increasing porosity and sorptivity of BFSb-based geopolymer mortars.
AtıfScopus1OpenAlex1İncele - MakaleYayıncıda açık erişim2023Scopus SJRQ2The Symptom Experience and Functioning of Non-Hospitalized COVID-19 Patients Within the First 20 days
Tütün Yümin, Eylem; Sürmeli, Mahmut; Topcuoğlu, Ceyhun; Başol Göksülük, Merve; Yümin, Murat
The adverse physical, psychological, and mental health consequences associated with COVID-19 illness are well-documented. However, how specific symptoms change over time and how COVID-19 affects one’s day-to-day activities of daily living (ADL), Quality of Life (QoL), sleep quality, and fatigue severity are not well described. This longitudinal and descriptive study examined the changes in COVID-19 symptoms, ADL, QoL, sleep quality, and fatigue severity within the first 20 days. A convenience sample (n = 41) of non-hospitalized SARS-CoV-2 positive patients were recruited and followed for 20 days. Participants completed self-report measures: COVID-19 symptoms, ADL, QoL, sleep quality, and fatigue severity at days: 1, 10, and 20 following a diagnosis. Findings revealed that symptoms decreased over 20 days (p <.001). In parallel with the decrease in symptoms, QoL and ADL improved over 20 days (p <.05). However, sleep quality and fatigue severity did not improve within 20 days (p >.05). Our findings contribute to the growing evidence that COVID-19 symptoms can linger, especially fatigue and sleep quality, that affect overall day-to-day functioning for at least 20 days after diagnosis. To mitigate the effect of COVID-19 on QOL and ADL, findings underscore the need for clinicians to work collaboratively with patients to develop a symptom management plan for a variety of symptoms including fatigue and sleep quality. Beginning to repurpose existing self-management strategies for the longer term COVID-19 symptoms could be beneficial and help to optimize patient outcomes. Future work should examine these variables over a longer timeframe and among different samples of non-hospitalized patients.
AtıfScopus1WoS1İncele - MakaleYalnız künye2023Scopus SJRQ2Replacement of Cu with One-Step Production of CuAg (Ag0.04Cu3.96): Superior Conductivity, Corrosion Resistance, and Hardness
Cihangir, Salih
Copper is the forefront of the fundamental metals used in various industries. It is utilized as bulk or electrodeposited on PCBs or interconnects. However, poor corrosion resistance and hardness reduce copper performance and limit its applicability in the fields that require mechanical strength, such as probing applications. Facile electrochemical deposition of Cu(Ag) films was examined in a deep eutectic solvent known for its green nature. SEM–EDS technique was applied for morphostructural and crsytal plane analysis. XRD analysis revealed Cu3.96Ag0.04 phase, and 2% Ag was identified in the Cu(Ag) film in EDS. Four-prope point resistivity analysis was performed via galvano-impedance spectroscopy. Obtained resistivity value of 5 µm thick Cu(Ag) coating was lower than the compliance limit of International Technology Roadmap for Semiconductors. Corrosion analysis was carried out via electrochemical impedance spectroscopy technique, and Cu(Ag) films demonstrated better resistance. Hardness tests also revealed that Cu(Ag) was approximately two times harder than Cu. Graphical Abstract: [Figure not available: see fulltext.]
AtıfScopus6WoS6OpenAlex6İncele - MakaleYalnız künye2023Scopus SJRQ1An integrated hybrid MCDM approach to evaluate countries’ COVID-19 risks
Mete, Suleyman; Yucesan, Melih; Gul, Muhammet; Ozceylan, Eren
To enable planning and early reaction efforts, it is important to identify the nations most at risk from COVID-19's health and humanitarian effects, which could exceed present national response capabilities. INFORM COVID-19 Risk Index developed by European Commission is one of the initiatives to meet the aforementioned need. However, the Index has 40 conflicting and comprehensive indicators (e.g., health system capacity, hygiene, vulnerability) and different countries that lead to a need for multicriteria decision-making (MCDM) approaches. This paper offers an integrated MCDM approach with two phases to re-assess the countries' COVID-19 risks based on INFORM COVID-19 Risk Index. In the first phase, the 40 indicators are prioritized using the Entropy-based multi-choice best-worst method (MC-BWM) to provide multiple viewpoints for the preferences values. In the second phase, 29 countries from different geographical regions are ranked using the COPRAS (Complex Proportional Assessment) method. Applying these three methods together on the COVID-19 risk assessment of countries is the most significant novelty for the relevant literature. The proposed approach has undergone a thorough comparative evaluation with the released INFORM COVID-19 Risk Index, and recommendations are provided based on different scenario analyses.
AtıfScopus21WoS16OpenAlex18İncele - MakaleYalnız künye2023Scopus SJRQ2Computer-aided Optimization of Geopolymer Mortars
Gülmez, Nihan; Koçkal, Niyazi Uğur
The optimum mix design of geopolymers involves the purpose of determining which mixture will have high engineering properties without compromising the importance of each variable. This experimental study aimed to investigate the effects of some critical geopolymer mixture parameters on engineering properties by using historical data design in response surface methodology (RSM). Statistical models were developed between factors (binder and aggregate content, curing conditions and aggregate type) and their response surfaces (oven dry (OD) bulk density, water absorption, compressive strength and flexural strength). The final mathematical models for the response surfaces were constructed in terms of coded factors defined as dimensionless. In addition, a multipurpose optimization technique was used to achieve the desired design with the desired maximum strength.
- MakaleYalnız künye2023Scopus SJRQ2Energy-momentum localization in rainbow gravity
Korunur, Murat; Korunur, Sibel
Theoretical physicists generally prefer to modify the general theory of relativity rather than avoiding the successful approaches that have been offered to us. Hence, the rainbow formalism of gravity, which is one of the most studied quantum gravity candidates in literature, has recently gained importance in the field. In this study, the energy-momentum localization problem is discussed for the Taub universe within the framework of rainbow gravity. To achieve this goal, energy and momentum components are calculated by making use of diverse values of rainbow functions in the Einstein, Bergmann-Thomson, Landau-Lifshitz, and the Papapetrou prescriptions for the geometry under consideration. Except for the Landau-Lifshitz prescription, all prescriptions depend on the rainbow functions and the momentum components vanish. Graphical analysis is performed for all the energies obtained. Also, it is shown in limiting condition f1(x) → 1; f2(x) → 1 that the results are compatible with the ones obtained in the general relativity.
AtıfOpenAlex1İncele - MakaleYalnız künye2023Scopus SJRQ1Ultrasound assisted adsorptive removal of Cd+2 ions from the water system using Bi2S3 nano/micro flowers
Kurnaz Yetim, N.; Aslan, N.; Özcan, C.; Koç, M.M.
Heavy metal ions threaten public health and marine life; thus, removal of heavy metals is essential for the environment. Bi2S3 nanostructures are active materials which used in various applications. In this work, we produced Bi2S3 nanoflowers using hydrothermal synthesis and assessed their Cd2+ ions removal capability. Structural properties of the Bi2S3 nanoflowers were assessed by various like scanning electron microscopy, X-ray diffraction. Chemical characteristics of the materials were confirmed using energy dispersive X-ray spectra. Different parameters affecting the Cd2+ ion recovery was worked some of which are adsorbent amount, Cd2+ ion concentration, pH, adsorbent time, eluent type and amount, etc. For cadmium, the optimum pH was determined 8.0 for 1 M HNO3 eluent. Optimum adsorbent amount was determined as 150 mg while optimum recovery duration was found as 30 min. Bi2S3 nanoparticles managed to achieve 99.3% Cd2+ recovery rate in 5 mL eluent volume, for optimum condition. The adsorption capacity of the Bi2S3 nanoflowers was found to be promising and therefore, it was illustrated that Bi2S3 nanoflowers are good candidates as sorbent for water remediation applications.
AtıfScopus3WoS3OpenAlex3İncele - MakaleYalnız künye2023Scopus SJRQ2Deep learning based an effective hybrid model for water quality assessment
Utku, Anıl; Utku, Esen Damla; Kutlu, Banu
Water, which is very important for life and civilizations on Earth, has been a source of life for all living things. However, freshwater resources gradually decrease due to climate change, pollution, and population growth. Water pollution is the quality changes that occur due to various activities of people, change the chemical, biological, and physical properties of water, restrict or prevent its use, and disrupt ecological balances. The water quality criteria determined to keep this pollution under control ensure the safe use of water. Water quality observations have gained more importance today due to intense environmental concerns and water pollution. This situation revealed the necessity of water quality assessment for water source use. In this study, the CNN-LSTM-based hybrid model was proposed to assess water quality. The proposed model was compared with AdaBoost, DT, GNB, kNN, LGBM, RF, and LSTM according to accuracy, precision, recall, F-score, and AUC. The proposed model has 98.81% accuracy, 99.03% precision, 99.65% recall, 99.33% F-score, and 93% AUC. Practitioner Points: CNN-LSTM hybrid model was developed to water quality assessment. The proposed model is compared with established techniques like AdaBoost, DT, GNB, kNN, LGBM, RF, and LSTM. The developed model has 98.81% classification accuracy. Experimental results show that the developed model will ensure the use of safe water according to water quality criteria.
AtıfScopus7WoS4OpenAlex8İncele - MakaleYalnız künye2023Scopus SJRQ2The Effect of Using Ferro-Alloy on the Properties of AlCoFeNiMoTi High-Entropy Alloy Produced by Arc-Melting Method: Design of Low Cost
Güler, Seval H.
The cost of high-entropy alloys (HEAs) is one of the most major obstacles to their widespread use. The cost of these alloys with significant amounts of five metals might reach very high levels depending on the type and quantity of metal utilised. Therefore, this study examined the effect of the use of ferro-alloys as part of the charge mixture on the properties of AlCoFeNiMoTi alloy. Ferro-alloys are much less expensive than the pure form of the same metal. To that end, two groups of samples were produced. The AlCoFeNiMoTi alloy was produced using high-purity metals as the metallic charge in the first group of samples. Instead of utilising the pure forms of some expensive metals that make up such alloy, as the metallic charge, lower-cost ferro-alloy forms were employed in the second group of samples. Following the preparation of the appropriate compositions, alloys were produced using the arc-melting method, and the produced alloys were subject to homogenization heat treatment. The obtained samples were characterised by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Then, mechanical and corrosion tests were run. The corrosion resistance of the HEAs was compared with an electrochemical polarisation technique in a 3.5% NaCl electrolyte. It was observed that many intermetallics precipitated through the heat treatment of the samples, and the precipitates negatively affected the mechanical properties of the alloy. Also, in the samples in which ferro-alloy was used instead of pure metal, the mechanical properties were substantially degraded. This is believed to be associated with the presence of inclusions and other residues in ferro-alloys. Graphical Abstract: [Figure not available: see fulltext.]
AtıfScopus6WoS7OpenAlex7İncele - MakaleYalnız künye2023Scopus SJRQ4Neurotoxic Effect of New Generation Insecticide with Flubendiamide Active Ingredient in Gammarus pulex (Linnaeus, 1758) (Amphipoda: Gammaridae) at Different Temperatures
Söylemez, Hilal; Serdar, Osman
This study aimed to determine the relationship between temperature and neurotoxicity of a new generation insecticide, the active ingredient of which is flubendiamide, on non-target aquatic organisms (Gammarus pulex (L., 1758)). Firstly, LC50 values of flubendiamide on G. pulex were determined at 16, 18 and 20 °C as 256.83 ± 19.59 µgL-1, 169.38 ± 34.17 µgL-1 and 155.84 ± 17.22 µgL-1, respectively. We found that the acute toxicity sensitivity of the test organism to the pesticide containing flubendiamide increased with increasing temperature. Secondly, G. pulex was exposed to non-lethal concentrations of flubendiamide pesticide for 96 hours at the above temperatures. Finally, the changes in acetylcholinesterase (AChE) enzyme activity were determined for each temperature using ELISA kits. The exposure time between the 24th and 96th h at the same temperature was found to be statistically insignificant (p>0.05). It was determined that the inhibition value of AChE enzyme activity on the test organism of the pesticide with active ingredient flubendiamide increased depending on the temperature increase. Considering the changes in AChE enzyme activities in G. pulex at different temperatures against flubendiamide insecticide, it was concluded that it can be used as a useful biomarker.
AtıfScopus1İncele - MakaleYalnız künye2022Öğretmen Adaylarının Kendi Alanlarıyla İlgili Öğretim Materyallerini Arama/Bulma-İndirme, Geliştirme, Tasarlama ve Sınıf Ortamında Kullanmaya İlişkin Görüşleri
Kılıç, Aygün
Bu çalışmanın amacı, öğretmen adaylarının kendi alanlarına ilişkin öğretim materyallerini arama/bulma-internetten indirme, düzenleyip geliştirme, tasarlama ve gerçek sınıf ortamında kullanma ile ilgili görüşlerini belirlemektir. Araştırmaya, bir devlet üniversitesinde pedagojik formasyon eğitimi sertifikası alan 40 öğretmen adayı katılmıştır. Bu araştırma, nitel betimsel bir çalışmadır. Öğretmen adaylarının öğretim materyaline ilişkin görüşleri, araştırmacı tarafından tasarlanan açık uçlu sorulardan oluşan bir anket formu kullanılarak belirlenmiştir. Bu forumdan elde edilen nitel veriler, içerik analizi yöntemine göre değerlendirilmiştir. Araştırmada elde edilen bulgulara göre, öğretmen adaylarının kendi alanlarına ilişkin öğretim materyallerini arama/bulma-indirme, arayıp/bulduğu-indirdiği mevcut öğretim materyallerini düzenleyip geliştirme, alanıyla ilişkili materyalleri tasarlayıp oluşturma ve gerçek sınıf ortamında kullanma gibi konularda çok yeterli olmadıkları ve bu konulara ilişkin kendilerini de kısmen yeterli hissettikleri görülmüştür. Bu çalışmada elde edilen nitel sonuçlar doğrultusunda, öğretmen eğitimi kalitesinin arttırılmasıyla ilgilenen araştırmacılara öneriler sunulmuştur.
AtıfTR Dizin1
İncele - MakaleYalnız künye2022Türkiye Ekonomisi Bağlamında Fisher Etkisinin Birim Kök Testleri ve ARDL Sınır Testiyle Sınanması
Arslan, Erdal; Sarı, Sacit
The positive relationship between the interest rate and the inflation rate is known as the Fisher effect in economics. The validity of the Fisher effect in the Turkish economy between 1971 and 2021 was tested using the ARDL bounds test and unit root tests within the scope of this study. In this context, it was concluded that the variables that are not stationary at the level move together in the long run. In the long run, a 1% increase in the inflation rate increases the interest rates by 1.05%. The Toda-Yamamoto causality test revealed a one-way Granger causality relationship between the related variables, ranging from the inflation rate to the interest rate. The stationarity of the real interest rate was tested with ADF, Lee- Strazicich and Fourier KPSS unit root tests. The findings indicate that the real interest rate variable is stationary and that the Fisher hypothesis holds in the Turkish economy.
AtıfTR Dizin4İncele - MakaleYalnız künye2022Cevap Yüzey Metodolojisi Kullanılarak P(NIPAM-co-AN)/Kil Kompozit Üzerine İndigo Karmin Adsorpsiyonunun Modellenmesi ve Optimizasyonu
Tanyol, Mehtap; Pıhtılı, Güzin
Bu çalışmada yeni bir polimerik adsorban olan Poli(NIPAM-co-AN)/kil kompoziti yerinde polimerizasyon ile hazırlanmıştır. N-izopropilakrilamid, akrilonitril ve uygun miktarda alınan kilin (yaklaşık %5 w/w) kopolimerizasyonu, 10 mL 1,4-dioksan varlığında 65°C'de, AIBN (azobisizobütironitril) başlatıcısı varlığında gerçekleştirildi. NIPAM-AN/kil kompoziti IC (indigo karmin) boyasını sentetik atık sulardan uzaklaştırmak için yeni bir adsorban olarak kullanılmıştır. Üç önemli proses parametresi olan başlangıç indigo karmin konsantrasyonu (5-30 mg/L), adsorban dozu (10-80 mg) ve temas süresi (10-180 dakika) yanıt yüzeyi metodolojisi (RSM) ile birleştirilmiş. Merkezi Kompozit Tasarım (CCD) kullanılarak modelleme yapıldı ve en iyi indigo karmin giderme yanıtını elde etmek için optimize edildi. Çözeltideki indigo karmin miktarı, 650 nm dalga boyunda bir UV-görünür spektrofotometre kullanılarak ölçülmüştür. ANOVA (varyans analizi) istatistiksel değerine dayalı olarak, indigo karminin P(NIPAM-co-AN)/kil kompoziti üzerine adsorpsiyonu, çok düşük olasılık değeriyle (p
AtıfOpenAlex4TR Dizin1İncele - MakaleYalnız künye2022Yükseköğretimde Dijital Dönüşüm: Araştırma-Sorgulamaya Dayalı Harmanlanmış Öğrenme Ortamına İlişkin Öğrenci Görüşleri
Kılıç, Aygün
Bu çalışmanın amacı, araştırma-sorgulamaya dayalı harmanlanmış öğrenme ortamına ilişkin üniversite öğrencilerinin tutum ve görüşlerini araştırmaktır. Araştırmaya, 2019-2020 eğitim-öğretim yılının güz döneminde Munzur Üniversitesi Tunceli Meslek Yüksekokulu Laboratuvar Teknolojisi programında son sınıfta öğrenim gören 24 meslek yüksekokulu öğrencisi katılmıştır. Laboratuvar Teknolojisi programında güz döneminde işlenen zorunlu su analizleri, bitki analizleri, toprak analizleri ve proje yönetimi dersleri araştırma-sorgulamaya dayalı harmanlanmış öğrenme ortamına göre işlenmiştir. Bu öğrenme ortamı, literatürde bulunan birçok araştırma incelenip analiz edilerek tasarlanmış, yüz yüze ve çevrim içi öğrenme ortamlarının bütünleştirildiği bireysel/grupça araştırma-sorgulama dayalı öğrenme etkinlikleri temel alınarak yürütülmüştür. Araştırmada, nitel araştırma yöntemlerinden durum çalışması kullanılmıştır. Çalışmaya katılan öğrencilerin bu öğrenme ortamına yönelik tutum ve görüşleri, bireysel yarı-yapılandırılmış mülakat tekniğiyle belirlenmiş ve elde edilen nitel veriler içerik analizine göre değerlendirilmiştir. Bu çalışmada elde edilen bulgulara göre, araştırma-sorgulamaya dayalı harmanlanmış öğrenme ortamına ilişkin üniversite öğrencilerinin çoğunun tutum ve görüşlerinin olumlu yönde olduğu tespit edilmiştir. Bu araştırmanın sonuçları, yükseköğretim kurumlarında yürütülen eğitim-öğretim süreçlerinin araştırma-sorgulamaya dayalı harmanlanmış öğrenme ortamları çerçevesinde yeniden düzenlenmesi ve geliştirilmesinin önemini vurgulamaktadır.
AtıfTR Dizin2İncele - MakaleYalnız künye2022Helal Otel Misafirleri Deneyimlerinin İncelenmesi Üzerine Bir Araştırma
Öztürk, Yüksel; Ercan, Berna
Helal turizm dini hassasiyeti yüksek olan Müslümanların seyahatleri boyunca gerek duydukları ulaşım, konaklama, yeme-içme, eğlence ve diğer ihtiyaçlarını karşıladıkları faaliyetleri dini inançlarına uygun bir şekilde bütün turizm çeşitlerinin yapılmasıdır. Araştırmanın amacı helal otellerde konaklayan yerli misafirlerin helal otel deneyimlerini incelemektir. Bu kapsamda demografik özellikler ile helal otel deneyimleri arasındaki farklılık ve helal otel deneyimi ile müşteri memnuniyeti arasındaki ilişki incelenmiştir. Araştırma evreni Türkiye’deki helal sertifikaya sahip helal otellerde konaklayan misafirlerden oluşmaktadır. Veri toplama aracı olarak ulusal ve uluslararası literatür taranarak madde havuzu oluşturulmuş ve toplanan maddeler kuramsal çerçeveye uygun şekilde ilgili alanlarda uzman akademisyenler ve ilgili sektör paydaşlarının görüşleri alınarak anket formu hazırlanmıştır. Hazırlanan anket formu çevrimiçi olarak 431 yerli misafir üzerinde uygulanmıştır. Verileri analiz etmek için Cronbach Alpha, faktör analizi, korelasyon t testi ve Anova analizleri uygulanmıştır. Araştırma kapsamında helal otel deneyimleri duyusal, ilişkisel duygusal, davranışsal ve düşünsel boyut olmak üzere beşe ayrılmıştır. Müşteri memnuniyeti iç faktörler ve dış faktörler olmak üzere iki boyuta ayrılmıştır. Veri üzerinde uygulanan korelasyon analizi sonuçlarına göre misafirlerin helal otel deneyimi algılarını içeren tüm boyutlar ile müşteri memnuniyeti boyutları arasında pozitif yönde orta düzeyde anlamlı bir ilişki olduğu görülmüştür. En yüksek ilişki duyusal boyut ile memnuniyetin iç faktörleri arasında olduğu görülmüştür. Helal otel deneyimi cinsiyet, yaş, medeni durum, öğrenim durumu ve aylık gelir arasında anlamlı bir farklılık bulunmamıştır. Helal otel deneyimi ile meslek ve statü arasından memurlar, işçiler ve ev hanımları serbest meslek çalışanlarına göre daha önem verdikleri ortaya çıkmıştır.
AtıfOpenAlex1TR Dizin2İncele - MakaleYalnız künye2022İşçi Sınıfı ve Mücadelesinin Post-modernist Reddinin Medyadaki Yansıması: THY Grevi ve Cerattepe Direnişi Örneklerinin Karşılaştırılması
Dagtas, Erdal; Aydin, Nursen
Kapitalist üretim sisteminin her yeniden yapılanma süreci, işçi sınıfı aleyhine sonuçlanan değişim ve dönüşümü beraberinde getirmiştir. Bununla birlikte, Sovyet sosyalist düzenin dağılmasının ardından kapitalist sistemin alternatifsiz mutlak gücünü ilan etmesi, sınıfların ortadan kalktığını savunan post-modern görüşlere dayanak oluşturmuştur. Sözü edilen görüşler, Marksizmin sınıf mücadelelerine atfettiği ayrıcalıklı konumun post-kapitalist toplumlarda geçerliliğini büyük ölçüde yitirdiğini ve çoğulcu kimlikler temelindeki sorunların siyaset alanının gündemini oluşturduğunu savunmaktadır. Kuramsal anlamda sınıf hareketlerinin yok sayılması gerek sanayi gerekse hizmet sektöründeki işçi sınıfının sermayeye karşı devam eden mücadelesinin somut varlığını ortadan kaldırmamaktadır. Toplumsal bir gerçeklik olan sınıf mücadelelerinin inkâr edildiği kuramsal görüşlerin yaygınlık kazanmasında neo-liberalizmin hegemonya alanlarından biri olarak medyanın ideolojik işlevi yadsınamaz. Bu çalışma, işçi sınıfı ve mücadelesinin sona erdiğini ileri süren post-modern görüşlerin egemen hale gelmesinde medyanın işlevini sorgulamaktadır. Bu doğrultuda, sınıf temelli toplumsal hareket örneği olan THY grevi ile yeni toplumsal hareket örneği olan Cerattepe direnişinin basılı gazetelerdeki (Evrensel, Hürriyet, Yeni Şafak) ve alternatif haber sitelerindeki (Bianet, Sendika.org, T24) sunumu eleştirel ekonomi politik yaklaşım çerçevesinde incelenmiştir. Temsil ettikleri ideolojiler temelinde belirlenen medya kuruluşlarının THY grevi ve Cerattepe direnişi özelinde, işçi sınıfı ve çevre hareketleri konusunda nasıl bir tutuma sahip oldukları ortaya konulmuştur. Nitel araştırma yönteminin kullanıldığı çalışmada, verilerin toplanmasında metin çözümlemesi tekniğinden yararlanılmıştır. Bu bağlamda, çalışmanın çözümleme nesnesi basılı gazetelerde ve alternatif haber sitelerinde yer alan THY grevi (15 Mayıs-21 Aralık 2013) ve Cerattepe direnişi (21 Haziran 2015-29 Şubat 2016) ile ilgili köşe yazıları çözümlenmiştir. Böylece, kuramsal alanda işçi sınıfını ve mücadelesini görmezden gelen görüşlerin ve neo-liberal bakış açısının taşıyıcısı olarak medyanın rolüne dikkat çekilmeye çalışılmıştır. Bununla birlikte, işçi sınıfı ve çevre hareketleri söz konusu olduğunda, basılı gazetelerin ve alternatif haber sitelerinin tutumunda farklılık olup olmadığı sorusuna yanıtlar aranmıştır. Sonuç olarak, sınıf hareketlerinin yeni toplumsal hareketler karşısında ideolojik açıdan ayrımcılığa uğradığı gözlenmiştir. Sınıf mücadelelerinin sona erdiğini ileri süren post-modern görüşler, ana akım medya aracılığıyla yeniden üretilerek egemen hale getirilmektedir. Bu noktada, özellikle sosyalist sol basın ve alternatif haber siteleri, işçi sınıfının ve sınıf temelli hareketlerin toplumsal gerçekliğinin kamuoyuna doğru yansıtılması bakımından önem taşımaktadır.
- MakaleYalnız künye2022Blending Effect of Maleic Anhydride-Styrene-Methyl Methacrylate Terpolymer on Polyvinylchloride (Pvc)/Polystyrene (Ps) Mixtures
Yilmaz, Ersen
The blending effect of poly maleic anhydride-styrene-methyl methacrylate (MA-St-MMA) terpolymer on nonmiscible PVC and Polystyrene was studied depending on their thermomechanical properties. Depending on the amount of the synthesized and used compatibilizer the tensile strength, modulus, and thermomechanical properties of the blends are enhanced. The unmodified and blends with small amounts of compatibilizer exhibit two-step degradation whereas those containing 6, 8 and 10 percent compatibilizer showed a single glass transition (Tg). All the results reveal that PS/PVC mixtures modified with MA-St-MMA have superior mechanical properties and phase adhesions than mixtures without terpolymer.