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Öğe ASSESSMENT OF SUSTAINABILITY CRITERIA WITH DEMATEL AND MOORA METHODS: A CASE STUDY IN TEXTILE SECTOR(Gh Asachi Technical Univ Iasi, 2024) Yontar, Emel; Zengin, SolenSustainability, which is one of the strategies developed and implemented in recent years due to resource constraints and environmental problems, makes itself felt in almost every field. It is observed that energy efficiency, waste management and environmental awareness come to the forefront in the researches made especially for the textile sector and these parameters should be emphasized in detail. Accordingly, the aim of this study is to determine the parameters required in the sustainable textile supply chain in order to increase the frequency of sustainability-based studies in the textile sector, and to compare the criteria that will lead to sustainable performance as a result of the analysis of the determined parameters. Considering the supply chain line in the textile sector, 16 parameters are determined by considering each stage in the adventure from cotton to fabric, and by providing literature gains. These determined criteria are first listed with the DEMATEL method and the interaction between each other is analyzed. According to the DEMATEL results; adopting a customer -oriented approach, just -in -time delivery understanding for the appropriate deadline, flow day time, optimum planning of the distribution network, sustainable resource use, information and material flow integration, sustainability R&D studies, accuracy of demand forecasting management criteria was determined as the affecting group; reduction of greenhouse gas emissions in production, storage and transportation, implementation of waste management studies, use of recyclable packaging, availability of environmental certificates, reduction of waste/error rate in production, ensuring meter compliance, employee motivation and continuous development, and corporate image was determined as the affected group. Then, the MOORA-Ratio and MOORA-Reference Point Approach methods, which are among the MOORA methods, are sorted and the results are compared and discussed. In the findings, it is observed that the criteria of corporate image, information and material flow integration, adopting a customer -oriented approach and sustainable resource use are in the top priority. In addition, MOORA-Ratio and MOORA-Reference Point Approach results are standardized with the help of the Z score and then they compared. It is seen that the order found as same. The addition of new criteria affecting sustainability in textile added originality to the study. Also, the study will contribute to the increase of sustainability studies in the textile sector and can answer where to start.Öğe Assessment of the logistics activities with a structural model on the basis of improvement of sustainability performance(Springer Heidelberg, 2022) Yontar, EmelThe rationale for prioritizing sustainability in our world, where climate change and unplanned population growth have increased noticeably and resources are exhausted, has affected almost every sector. The logistics sector, which is one of these sectors and undoubtedly directly affects the living resources, constitutes the subject of our study. The study deals with the logistics activities carried out by the companies on the basis of sustainability and the aim of the article is to provide a framework that will contribute to the sustainability initiative of the companies carrying out logistics activities. It provides gains to the literature by investigating the important factors that greatly affect the performance of logistics activities. Accordingly, logistics activities are detailed under the titles of environmental impact, waste management, transportation and warehouse management, resource usage, social impact, internal factors, external factors, and logistics performance factors. These titles are the main dimensions that emerged as a result of literature research and expert opinions. The most important sub-criteria that affect the sustainable logistics performance, which are handled within the scope of the main dimensions, have been determined as 44 with Pareto analysis. These determined parameters are analyzed with the formation of a comprehensive structural model and their importance levels are interpreted, and the findings are interpreted. It is compared with the DEMATEL method. The results of this study, in which sustainable logistics practices are at the forefront, form the basis for improving the sustainability performance of the logistics sector.Öğe Blockchain Teknolojisi ve Sürdürülebilir Lojistik: Döngüsel Ekonomi Entegrasyonu(Toros Üniversitesi, 2022) Yontar, EmelDöngüsel ekonominin “3R” eylemleri arasında yer alan geri dönüşüm, yeniden kullanım ve azaltma, kaynak verimliliğinin sağlanmasında önemli bir yere sahiptir. Kaynakların kullanımının en aza indirilmesi, yeniden kullanılmasının sağlanması ve yüksek standartlarda geri dönüştürülerek kazanımların elde edilmesi lojistik sektörünün sürdürülebilirlik çalışmalarına katkı sağlayabilir. Bu çalışma, sürdürülebilir lojistik çalışmaları dikkate alınarak döngüsel ekonomiyi blockchain teknolojisi ile ilişkilendirmeyi kapsamaktadır. Döngüsel ekonomi perspektifinden bakıldığında, sürdürülebilir lojistiği etkilediği düşünülen blockchain teknolojisinin özellikleri; karbon emisyonunun azaltılması, lojistik maliyetlerinin azaltılması, iletişim kolaylığı, bilgisayar korsanlığı, artan performans, veri değişmezliği, etkin bilgi paylaşımı, şeffaflık, belirsiz yasal durum, yeni teknoloji ve güven. Bu noktadan hareketle mevcut çalışmada blockchain teknolojisinin döngüsel ekonomiye giden yolda yeri incelenmiştir.Öğe Challenges, threats and advantages of using blockchain technology in the framework of sustainability of the logistics sector(Murat Yakar, 2023) Yontar, EmelDue to the complexity and lack of transparency of traditional supply chains, the introduction and development of blockchain technology is of great interest to the stakeholders involved in the logistics process to improve logistics processes in the supply chain and make them more sustainable. A detailed analysis has been made for the logistics industry in this study, which is discussed to investigate the undeniable benefits of blockchain technology. Today, when we try to determine our application methods in line with sustainable development purposes, it is seen that the logistics industry gains many advantages when it is integrated with blockchain technology. For this purpose, SWOT analysis has been applied as a result of literature review for logistics management, which is one of the sub-activities of supply chain management that applies blockchain technology, and contributes to the application potential in the logistics industry. At this point, some of the strengths that will require the use of blockchain technology in the logistics sector are decentralized structure, effective information sharing, fast response, robust risk management, interprocess integrity, etc. While its weaknesses are low performance, having a complex structure and high energy consumption can be the problem. In addition, some of the opportunities that the sector will gain are the ability to optimize time, solve problems, gain competition, increase sustainability; on the other hand, external threats, cross-integration adoption, new technology, limited data privacy etc. is happening. © Author(s) 2023.Öğe CLOSED LOOP SUPPLY CHAIN MANAGEMENT PERFORMANCE EVALUATION CRITERIA(Murat Yakar, 2019) Yontar, Emel; Ersöz, SüleymanEvaluating chain performance to develop an effective supply chain has become a necessity because it plays a critical role in the success of businesses. The most important decision to evaluate the chain performance is the correct selection of indicators. The closed-loop supply chain method consists of a whole of forward and reverse logistics activities. For this reason, advanced supply chain management and reverse supply chain management performances are handled separately in this study. The performance evaluation criteria which are discussed by the authors who work on the supply chain management performance evaluation issues are analyzed and it is stated that the authors make a study by taking into consideration the evaluation criteria. At the same time, the articles examined in reverse supply chain management performance evaluation studies are examined and all criteria are summarized as a table. In the light of these studies, the planned criteria for the use of closed loop supply chain management performance evaluation of the enterprises have emerged. With the main criteria being divided into Economic, Social and Environmental headings, which are supposed to bring innovation to the literature, the sub-criteria are detailed. These titles were brought together both for the first time in closed loop supply chain management performance evaluation and as a main topic in advanced supply chain management. The performance criteria reduced to subheadings will help the experts to continue their studies, and it is thought that they will guide the future studies. © 2019, Murat Yakar. All rights reserved.Öğe Critical success factor analysis of blockchain technology in agri-food supply chain management: A circular economy perspective(Academic Press Ltd- Elsevier Science Ltd, 2023) Yontar, EmelIn the sustainability system, which gives importance to the availability of resources, recycling, renewal, and reproduction strategies can be handled under the name of the circular economy. While there are many stages to be followed from food production to consumption and even recycling, one of the technologies that will contribute to the circular economy that can take an active role in these stages is blockchain technology. In this study, which is about the circular economy in sustainable supply chain management, the contribution of blockchain technology to agri-food supply chain management is discussed. The aim of the study is to research, analyze and prioritize the critical success factors of the use of blockchain technology for the agri-food sector on the way to the circular economy. As a first step, with the help of PESTEL analysis approach, 12 critical success factors for agri-food supply chain management under the political, economic, social, technological, environ-mental, and legal dimensions of blockchain technology within the scope of circular economy are determined. Analytic Network Process (ANP) and MultiAtributive Ideal-Real Comparative Analysis (MAIRCA) methods are used in an integrated way to consider the degree of influence between the factors and to determine the ideal optimal factor. In the results, it is determined that the political and technological sub-criteria of blockchain technology is determined, and it is observed that the criteria handled in line with the sustainability system are compatible with the perspective of reducing the waste of resources of the circular economy. If blockchain technology is used in the agri-food sector, it has been determined that it will contribute to the circular economy with the success factors in this study. Ability to prevent food waste; Increased food security; Product life-cycle tracking factors take priority in their ranking.Öğe ENDÜSTRİ 4.0 ETKİSİ İLE COVİD 19 PANDEMİSİ'NDE SAĞLIK SEKTÖRÜNDE DİJİTAL DÖNÜŞÜMÜN YANSIMALARI(Tarsus University, 2022) Zengin, Şölen; Yontar, EmelEndüstri 4.0' ın etkisiyle tüm dünya ve ülkemiz dijital bir dönüşüm sürecindedir. İçinde bulunduğumuz Covid-19 pandemi sürecinin etkisiyle sağlıkta dijitalleşme hızla gelişiyor ve büyük önem taşıyor. Bu çalışmada dijital sağlık alanında dijital dönüşümün dört ana konusu, teletıp, e-Sağlık, m-Sağlık, algoritmik tıp, e-nabız ve bu alandaki son gelişmeler tartışılmaktadır. Endüstri 4.0 etkisi ile sağlıkta yaşanan gelişmelere, sağlık sektöründeki yapay zeka uygulamalarına yer verilerek çalışmanın amaçları sunulmuştur. 2019-2021 yılları arasında konuyla ilgili yapılan çalışmalar incelenmiştir. İncelenen çalışmaların sadece %2'sinin literatür çalışması olması ve içinde bulunduğumuz Covid-19 pandemi sürecinin de etkisiyle sağlıkta dijitalleşmenin hızlanması ile mevcut literatür çalışmasına olan ihtiyaç ortaya çıkmıştır. Literatür çalışmasında; güncel uygulama örneklerini içeren çalışmalara yer verilmiş ve sağlıkta dijitalleşmenin mevcut durumu sunulmuştur. Çalışmada sağlıkta dijitalleşmenin hızlı gelişimi ve önemi, Covid-19' un da etkisiyle vurgulanmıştır.Öğe ERP Kurulum Sürecinin Tamamlanmasının Ardından Modelleme Çalışmalarına Geçiş(2019) Yontar, Emel; Ersöz, SüleymanSon yıllarda işletmelerin bilgi teknolojisi tabanlı sistemlere yönelimlerinde artış olduğu görülmektedir. Bu ilginin artmasında, bilgi sistemlerinin işletmelere sağladığı faydaların etkili olduğu düşünülmektedir. Bu bağlamda firmaların aradığı ve geniş bir modüle sahip olan bilgi sistemi Kurumsal Kaynak Planlama (Enterprise Resource Planning-ERP) sistemleridir. İşletmelerde, doğru bilgiye hızlı şekilde ulaşarak etkin bir bilgi akışını sağlayan ERP sistemleri kullanımları her geçen gün artmaktadır. ERP sistemleri, işletmelerde veri tabanı olarak kullanılıp entegre bir şekilde bilgi paylaşımlarını koordine eder ve farklı departmanlarda çalışanların bilgilere eş zamanlı ulaşmasını sağlar. Bu noktada ERP sisteminde yer alacak ve bölümler arası koordineyi sağlayacak, ürün kodlamaları ön plana çıkmaktadır. Kurulum aşamasının ardından sistem analizi ile birlikte firma içerisinde ürünleri özelleştirmek yapılması gereken en temel çalışmadır. Bu çalışmada ERP uygulamalarının kullanılması için tarım makine sanayinde yer alan bir firma seçilmiştir. Tarım makine sanayinde yer alan firmaların ürün çeşitliliğinin çok geniş olması, üretim yoğunluğunun mevsimsel ve stok oranlarının düzensiz olması, planlamada yaşanan aksaklıkların verimliliği düşürmesi sebebiyle bu sektör ele alınmıştır ve ürünlere dair karışıklığın giderilmesi, benzerliklerin ortadan kaldırılması istenmiştir. ERP sisteminin bu firmaya uyarlanması noktasında da en temel yapılması gereken çalışma sistem analizinin ardından ürünlerin ERP sistemine uyarlanarak, ürün kodlarının hazırlanması olmuştur. Hammadde, yarı mamul, mamul ve malzemeler karakteristik özellikleri bakımından incelenerek, ürünlere ait spesifik bilgilerin yer aldığı modellenme çalışması yapılmıştır. Yapılan çalışmalar tamamlanmış ve her ürün için proses kartları oluşturulmuştur. Bu çalışma ile tarım makine sanayi sektöründe yer alan ve ERP yazılımı kullanacak olan diğer firmalara ERP kodlama çalışmalarında örnek olunmak istenmiştir.Öğe Evaluation of sustainable energy action plan strategies with a SWOT/TWOS-based AHP/ANP approach: a case study(Springer, 2023) Yontar, Emel; Derse, OnurSustainable energy is an important and strategic issue to meet the needs of future generations. In order to ensure sustainable energy, action plans should be created and the steps to be taken should be prioritized. In this study, an integrated AHP/ANP methodology with SWOT Analysis TOWS Matrix is applied for strategic analysis. The study is carried out with the 31 participations of internal and external stakeholders for the Yenisehir region in Mersin province of Turkey. Firstly, SWOT Analysis is applied for the region, and then, it is developed with the TOWS matrix, which is the action tool for the items determined by the SWOT analysis. At this stage, 16 Sustainable Energy Action Plan strategies are determined. Finally, the weights for each strategy are calculated separately with the AHP method and the ANP method, and prioritized, and the importance levels of the strategies are determined. After both solutions, the first three strategies that are asked to be given priority in practice are found to be the same. Priority strategies in the study, increasing renewable energy applications in buildings depending on population density (SO1), reducing greenhouse gas emissions with waste management studies (WO5), and maximizing the energy efficiency potential to provide thermal insulation, create energy efficient systems in buildings (SO3) and emerge as priority strategies. The study is a guide for the first steps to be taken by the region for sustainable energy actions and is carried out effectively with integrated systems.Öğe FIELD STUDY ON DETERMINING PERFORMANCE EVALUATION CRITERIA IN SUSTAINABLE SUPPLY CHAIN MANAGEMENT(2020) Ersöz, Süleyman; Yontar, EmelThe most important factors for the sustainability of supply chain management areeconomic, social and environmental factors. In order to maintain sustainability in thisfield, companies need to see areas where they can improve by performing performanceevaluation. For this purpose, in this study, it is aimed to determine the criteria to be usedin the performance evaluation of sustainable supply chain management. In this respect,firstly, the performance criteria of supply chain management and reverse supply chainmanagement studied in the literature are examined separately; these main criteria havebeen defined by taking into account economic, social and environmental factors. As aresult of the literature review, 46 sub-criteria are determined which are in line with themain economic, social and environmental criteria. It is planned to make priority rankingof these criteria and to use the criteria which are obtained at a high rate according totheir importance levels in performance evaluation. Representatives and academiciansfrom the sector are asked to score 46 performance evaluation criteria according to theirimportance level. With the findings obtained, it is aimed to determine the criteria of highimportance by performing Pareto Analysis. As a result of the studies carried out, nine newcriteria can be added to the literature and a total of 33 criteria have been determined forperformance evaluation. The criteria that companies can use for performance evaluationin the field of sustainable supply chain management are finalized and it is aimed to gainvalue for the sectors to improve themselves.Öğe Investigation of Food Supply Chain Sustainability Performance for Turkey's Food Sector(Frontiers Media Sa, 2020) Yontar, Emel; Ersoz, SuleymanIncreasing product demands, environmental aspects, and overpopulation have an impact on the sustainability of a supply chain, especially in the food sector. In a food supply chain from production to consumption, there are many parameters (resources, packaging, waste management, etc.) that need to be taken into account for sustainability. The aim of this study is to determine the parameters affecting sustainable food supply chain management for the food sector and to measure the performance of the parameters along the supply chain. In this study, several performance indices and sub-criteria are defined by reviewing the indices previously discussed in the literature and accounting for expert opinions on the sustainable food supply chain. Customer satisfaction, resource utilization, product safety, innovation, reliability, company information, packaging, and waste management are defined as the parameters, as these are dimensions that should be improved in sustainable food supply chain management. The performance score for each dimension is calculated via Structural Equation Modeling and the Analytic Hierarchy Process. Customer satisfaction is calculated to have the highest performance, with a score of 86.23% in sustainable food supply chain management performance evaluation, followed by the product safety dimension, at 84.65%, while the performance index score of the reliability dimension is 82.97%, that of the packaging dimension is 78.81%, that of the company information dimension is 75.10%, that of resource utilization is 71.41%, and that of the waste management dimension is 67.83%. The sustainable food supply chain performance evaluation for the food sector in Turkey indicates that it has an overall performance of 79.7%. The results of this study include feedbacks on parameters in the food chain from agriculture to consumers.Öğe Prioritization of Negative Carbon Strategies in the Cargo Industry with the SWARA/WASPAS Method(2023) Yontar, Emel; Derse, OnurThe ever-increasing consumption of fossil fuels with the increasing population in the world has brought along the obligation of countries to take some precautions. Determining the measures to be taken to prevent carbon emissions, turning these measures into a strategy and implementing them has become one of the important issues that concern almost every field. Reducing, neutralizing and turning negative carbon emissions significantly reduces the side effects of climate change. In this study, it is aimed to develop strategies within the scope of carbon negative by considering the cargo sector, which is one of the important fields of activity of the transportation sector, where the carbon emission rate is high. SWARA and WASPAS methods, which are among the Multi-Criteria Decision Making methods, are used in the evaluation phase of the strategies determined through the Delphi technique and literature review. Strategies are asked to be prioritized for the implementation of 16 determined strategies within the cargo sector, and “Using electric vehicles” ranked first in both methods. “Use of carbon capture, exploitation and storage technologies”, “Balancing greenhouse gas emissions”, “Existence of carbon tax to reduce carbon emissions” strategies have also been identified as other top priority strategies. It is thought that the strategies listed as a result of the study can help reduce our carbon footprint and help reach negative carbon by reducing CO2 levels in the atmosphere.Öğe RESEARCH ON SUSTAINABLE CRITERIA AFFECTING THE LOGISTICS SECTOR(Toros Üniversitesi, 2021) Yontar, EmelThe understanding of sustainability can be applied in almost every sector, and has a very wide impact in the logistics sector. Today, taking into account the sustainability criteria is among the basic conditions of doing business for companies in the supply chain, and it is becoming more and more important. In this study, 15 articles that studied with sustainable logistics criteria between 2008 and 2020 are reviewed and the sustainable logistics criteria included in each study are determined. These 103 logistics criteria, which are determined, are ranked in importance by Pareto analysis, in consultation with expert academicians and logistics sector employees, and it is concluded that 33 criteria can be more important than others. These criteria are transport optimization, energy and fuel efficiency, production and distribution planning, environmental conditions, well-connected information and goods flows, internal resources efficiency, effectiveness, and utilization, selection of fuel type to be used, choice of mode of transport and intermodal transport, energy use, waste management, recycle efficiency, vehicle selection and efficiency, logistics cost optimization, using advanced technology and software in logistics activities, minimum energy consumption, economic factors, greenhouse gas emissions, reduced packaging, supply chain integration, consumer awareness studies, social factors, logistics competence, reverse logistics applications, government rules and regulations, sustainability behavioral cautiousness, use of recycled material, increasing awareness, organizational support, employee benefits, green packaging, consumer behavior, infrastructure, product value. With the understanding that it is possible to minimize the damage caused by the sector to the environment with an effective sustainability strategy, if these sustainable logistics criteria are given importance, logistics companies will reach a competitive level in the field of sustainability.Öğe SUPPLY CHAIN MANAGEMENT PERFORMANCE EVALUATION: COMPREHENSIVE LITERATURE REVIEW(Engin ÇAKIR, 2019) Yontar, Emel; Ersöz, SüleymanSupply Chain Management Performance Evaluation (SCMPE) has become a necessity for businesses. In this study, the publications in the field of performance evaluation in supply chain management are analyzed. The distribution of the studies which deal with the issue of SCMPE is between 1991-2019 according to years. The literature review is made on the databases ScienceDirect, Scopus, Taylor&Francis Online and Emerald by using the keywords (Supply Chain Management, Performance Evaluation, Performance Assessment). For SCMPE, as a result of publications reviewed, it is seen that the most frequently used model encountered in literature researches is SCOR-based studies and Balanced Scored Card, model. However, recent research has drawn attention to those using different or integrated methods of performance evaluation in supply chain management. Performance evaluation criteria are determined as the most studied and least studied. For future studies, the scope of the study can be extended by adding more databases.Öğe Sürdürülebilir Tedarik Zinciri Yönetimine Firma Niteliklerinin Etkisi: Tekstil Sektörü Bakış Açısı(2023) Yontar, Emel; Zengin, ŞölenKaynak kullanımının yoğun olduğu bilinen tekstil sektörü için sürdürülebilirlik çalışmalarının uygulanması ekonomik anlamda sektörün gelişmesini sağlayarak çevresel ve sosyal anlamda tedarik zinciri yönetiminin aşamalarında olumlu etki bırakacağı yadsınamaz bir gerçektir. Tedarik zinciri yönetiminde sürdürülebilirliğin sağlanması için ele alınması gereken çok sayıda parametre bulunmaktadır. Tekstil sektörü ihtiyaçları doğrultusunda sürdürülebilirliği amaçlayan firmaların bu parametrelere göre ilerlemesi olası kaynak kayıplarını daha da azaltacaktır. Mevcut çalışma bu konuyu ele alarak tedarik zinciri yönetimi içerisinde sürdürülebilirliği etkileyen değişkenlerin araştırılmasını amaçlamaktadır. Firmaların sahip olduğu niteliklerin değişkenlerine göre belirlenen müşteri odaklı yaklaşım, teslimat odaklı yaklaşım, kaynak kullanımı ve ürün odaklı yaklaşım değişkenleri ile aralarındaki ilişki Yapısal Eşitlik Modeli ile ele alınmıştır. Çalışmada belirlenen 35 değişken beş gizli değişken içerisinde gruplandırılarak çıkan değerlerin etki düzeyleri belirlenmiştir. Etkili risk yönetimi, müşteri isteklerinin yerine getirilmesi, sipariş takibi, dönüştürülebilen ambalajın kullanılması, tahmin tekniklerinin doğruluğu değişkenlerinin etki düzeyleri en yüksek değişkenler olarak çıkmıştır.Öğe Sustainability assessment with structural equation modeling in fresh food supply chain management(Springer Heidelberg, 2021) Yontar, Emel; Ersoz, SuleymanThe aim of this study is to determine the dimensions that affect the sustainability performance of the fresh vegetable and fruit supply chain and to determine the performance that occurs along the chain line. In this study conducted for the fresh fruit and vegetable sector, it is desirable to measure each dimension by finding the performance indices of sustainable supply chain management. Dimensions of this study include supply chain management, resource management, food safety, packaging, and waste management. For these five dimensions gathered from the literature and expert opinions, 26 sub-criteria are determined for use in performance evaluation. Structural equation modeling (SEM) and analytical hierarchy process (AHP) methods are used together to calculate the performance index of each dimension and then to obtain a final fresh vegetable and fruit supply chain performance score. This study has been performed in Turkey. Turkey, between the countries of the world, is located in the top 5 in the fruit and vegetable production. The performance of the five different dimensions is calculated. In this performance assessment, supply chain management dimension is calculated as the highest performance with a score of 91.22%. The lowest performance index score as 66.77% is the waste management dimension. The final sustainable fresh fruit and vegetable supply chain performance score is calculated as 79.96%. In addition to the limited performance evaluation studies in the sustainable supply chain, the fact that this study deals with the food chain, modeling and creating a final performance demonstrates the innovative aspect of the study. Attention is also drawn to the parameters that need to be addressed for more sustainable food.Öğe Sustainability studies applied to reverse logistics: an overview of the literature(Inderscience Publishers, 2023) Duran, Fatma Ersoy; Yontar, EmelConsidered within the scope of sustainability, reverse logistics, which includes the recycling process and waste management, is the process of dealing with the current flow from the end consumer to the supplier in the logistics processes in the opposite direction. The aim of this study, which deals with these two important concepts, is to provide a different perspective to the studies to be done in this field by considering the sustainable reverse logistics studies that have been made in the literature over time. In this direction, 52 articles based on sustainable reverse logistics are examined and analysed. With this study, it is aimed to detail the reverse logistics activities, which are one of the areas of use, by drawing attention to the concept of sustainability, and to contribute to the increase of sustainable reverse logistics studies by drawing attention to the gains and gaps in the literature. Copyright © 2023 Inderscience Enterprises Ltd.Öğe SWARA-TOPSIS YÖNTEMİ İLE EN UYGUN YENİLENEBİLİR ENERJİ KAYNAĞININ BELİRLENMESİ(2020) Derse, Onur; Yontar, EmelYenilenebilir enerji kaynaklarına olan ihtiyaç ve talep her geçen gün artmaktadır. Dünyadanüfus sayısının hızla artmasıyla birlikte hem tüketimi azaltmak hem de çevre zararını ortadankaldırmak için yenilenebilir enerji kaynakları kullanılmaya başlanmıştır. Doğru yerde doğruyenilenebilir enerji kaynağı seçimi yapılarak yenilenebilir enerji kaynaklarından elde edilenfaydalar artırılabilmektedir. Ancak bu seçim aşamasında ele alınması gereken çok fazla vefarklı kriterler ortaya çıkmaktadır. Bu çalışmada Çok Kriterli Karar Verme TekniklerindenSWARA ile entegre TOPSIS yöntemi kullanılarak en uygun yenilenebilir enerji kaynağınınseçimi ele alınmaktadır. Çalışmada, yenilenebilir enerji kaynakları olarak; rüzgâr enerjisi,güneş enerjisi, biyokütle enerjisi, hidrojen enerjisi, dalga enerjisi, hidroelektrik enerjisi vejeotermal enerji incelenmektedir. Bu kaynakların karşılaştırılması için değerlendirmekriterleri olarak; maliyet, verimlilik, iş imkânı, elde edilebilirlik miktarı, devlet teşvikleri, sosyalkabul edilebilirlik, teknolojik olgunluk, hizmet ömrü, arıza / kaza riskinin düşüklüğü, araziihtiyacı kriterleri dikkate alınmaktadır. Karşılaştırmalı analizlerde dikkate alınarakçalışmanın sonucunda Türkiye’de yenilenebilir enerji kaynaklarından hidroelektrik enerjisantralinin kurulması gerektiği ilk sırada görülmektedir. Bu enerji kaynağını sırasıylabiyokütle enerjisi, jeotermal enerji, hidrojen enerjisi, güneş enerjisi, rüzgâr enerjisi ve dalgaenerjisi takip etmektedir.Öğe TEKSTİL SEKTÖRÜNDE SÜRDÜRÜLEBİLİR TEDARİK ZİNCİR YÖNETİMİNİN RİSK FAKTÖRLERİNİN BELİRLENMESİ VE ANALİZİ(Beykent Üniversitesi, 2023) Yontar, Emel; Zengin, ŞölenSürdürülebilir tedarik zinciri yönetimi, ekonomik, sosyal ve çevresel katkıyı birleştiren ve tedarik zinciri hattının her aşamasında belirli kararlar ve planlamalar almayı öngören bir yönetim sürecidir. Sürdürülebilir yönetim anlayışı ile firmalar çevresel izlenebilirliği ön planda tutmakta, gerekli düzenlemeleri sağlamakta, sosyal çevre işbirliğinde önemli adımlar atmakta ve tüm bunları yaparken ekonomik verimlilik elde etmektedirler. Şirketler, gelişen bir sürdürülebilirlik anlayışı ile tedarik zincirlerini daha etkin hale getirmek için gerekli ekonomik yatırımların yanı sıra çevresel ve sosyal faktörlerin getirebileceği riskleri de göz önünde bulundurarak, geleceğe yönelik belirsizlik düzeyini ve alacakları kararları dikkate almalıdır. Risk faktörü, herhangi bir olayın meydana gelmesi ile ilgili belirsizlik olarak kabul edilirken; Öte yandan, beklenmedik durumların planlanmasında risk yönetimi stratejik olarak önemlidir. Tedarik zincirinde risk yönetimi, ekonomik ve üretim döngüsündeki risk faktörlerinin belirlenmesi, analiz edilmesi ve risklere karşı proaktif çözümler üretilmesinde etkilidir. Hızla artan dünya nüfusunun da etkisiyle tekstil tüketiminde önemli bir artış yaşanıyor. Bu çalışmada tekstil sektörü için sürdürülebilir tedarik zinciri yönetiminde risk değerlendirmesi için; tedarik, üretim, dağıtım, müşteri, tersine lojistik ana başlıkları altında ve ekonomik, sosyal ve çevresel alt başlıklar çerçevesinde ele alınmaktadır. Literatür taraması yapılarak ve tekstil sektörü çalışanlarının görüşleri alınarak olası riskler belirlenir. Çalışma sonucunda Sürdürülebilir Tedarik Zinciri Risk Yönetimi (SSCRM) için kapsamlı bir çerçeve geliştirilmesi hedeflenmektedir. Tekstil atıklarının uygun teknolojilerle katma değerli ürünlerin hammaddesine dönüştürülebilmesi gibi tekstillerin sürdürülebilirliği içinde yer alan önemli stratejiler sunulmaktadır.Öğe The role of blockchain technology in the sustainability of supply chain management: Grey based dematel implementation(Elsevier, 2023) Yontar, EmelDecentralized, transparent, immutability, irreversible, autonomy, open source, anonymity, ownership and uniqueness, source, contract automation are at the forefront of the features that allow blockchain technology to be accepted within the sectors. Thanks to these features, it has an important potential in terms of applicability, as well as in supply chain management, as in many other fields. In this study, the compatibility and impact level of the features of blockchain technology with the sustainability of supply chain management are investigated. Within the scope of supply chain management, effective information sharing, integration between processes, trustworthy, systematic data management, auditability, transparency, strong relationship between stakeholders, high efficiency, quick answer, ability to increase sustainability, transition to digitization, uncertain legal status, new technology, integration compatibility with other technologies, optimizing time parameters are evaluated. In the results obtained with the Grey Relational Analysis-based DEMATEL method, effective information sharing, integration between processes, systematic data management, quick answer, uncertain legal status, new technology, and integration compatibility with other technologies are included in the group affecting other criteria. Within the scope of the study, the characteristic features of blockchain technology for supply chain management are interpreted with relationship map and graph diagram. The study provides both theoretical and practical contributions by drawing attention to the compatibility of the blockchain in supply chains, and guides the employees in the supply chain line on how they can best guide their companies and on which parameters they can gain by enabling them to adopt blockchain technology. With blockchain technology, it offers the opportunity to achieve higher efficiency with less time, less cost and faster response, which can realize its sustainability mission, which includes each of the economic, social and environmental dimensions.
