Browsing by Author "Kazançoğlu, Yiğit"

Now showing 1 - 20 of 27

Citation - WoS: 35
Citation - Scopus: 25
A circular food supply chain network model to reduce food waste
(Springer, 2022) Ozgur Kabadurmus; Yigit Kazancoglu; Damla Yüksel; Melisa Ozbiltekin-Pala; Yüksel, Damla; Pala, Melisa Özbiltekin; Kabadurmus, Ozgur; Kazançoğlu, Yiğit
Food loss and waste (FLW) is a growing global problem throughout the world. The rapid increase in food waste and deficiencies in treatment processes have led to greater harm to the environment. A circular food supply chain (FSC) is now an essential means of encouraging circular economy. Proper food waste treatment and recycling operations can not only benefit the environment but these wastes can also be used as raw material for production in a circular economy. In this study a circular food supply chain network model is designed to reduce the food waste generated in the circular food supply chain systems of municipalities. Then a mixed-integer linear programming model is generated to model the proposed circular food supply chain network model. The MILP model is a network model aimed at reducing the food waste generated. To do so two objectives are considered: the overall cost of the network is minimized and the amount of distributed food waste from the generation nodes to the end nodes is maximized. Due to the bi-objective nature of the proposed mathematical model the Improved Augmented Epsilon Constraint method (AUGMECON2) is implemented to solve the problem optimally. To illustrate the applicability and effectiveness of the proposed mathematical model two real-life case studies were carried out in Izmir the third largest city in Turkey. The computational results demonstrate that the proposed model is beneficial for both small and large municipalities since it provides the Pareto-optimal set where the total amount of distributed food waste is maximized and the total cost is minimized. © 2022 Elsevier B.V. All rights reserved.
Citation - Scopus: 15
A Conceptual Framework for Food Loss and Waste in Agri-Food Supply Chains: Circular Economy Perspective
(Springer, 2021) Yasanur Kayikci; Nazlican Gozacan; Çisem Lafci; Yigit Kazancoglu; Kayıkcı, Yaşanur; Gözaçan, Nazlıcan; Lafcı, Çisem; Kazançoğlu, Yiğit
The importance given to Circular Economy (CE) has further increased in the Agri-Food Supply Chain (AFSC) to combat the challenges of food loss and waste which could be caused by various reasons such as poor stock management economic behavior and also the occurrence of COVID-19 outbreak. The transition from linear to circularity can also enable competitive sustainability from farm to fork in AFSC which consists of different stages: farmers food processors food distributors food retailers consumers. Food loss mainly occurs in AFSC at near-farm stages (i.e. harvesting processing) while food waste happens in AFSC at near-fork stages (i.e. retail post-consumption). Thus 6Rs (remanufacture redesign reduce recycle reuse and recover) of CE principles can offer various benefits to close the loop of the wastages along with the AFSC. In this chapter a conceptual framework for circularity in the AFSC is proposed considering the 6Rs. Furthermore this framework also supports the Sustainable Development Goals. The applicability of the proposed framework is examined and discussed in the case of Turkey using SWOT Analysis. Key findings indicate that there is confusion about food loss and waste issues in Turkey. In addition the solutions and developments for FLW problem are generally focused on food waste. © 2021 Elsevier B.V. All rights reserved.
Citation - Scopus: 1
An Application of the Fuzzy TODIM Method for Evaluating Closed-Loop Supply Chain’s Reproduction Process in E-Waste
(Springer Science and Business Media Deutschland GmbH, 2023) Yigit Kazancoglu; Melis Tan Tacoglu; Kazançoğlu, Yiğit; Taçoğlu, Melis Tan; C. Kahraman , I.U. Sari , B. Oztaysi , S. Cevik Onar , S. Cebi , A.C. Tolga
A closed-loop supply chain (CLSC) is a circular system that keeps resources and materials in use for as long as possible reducing waste and creating economic and environmental benefits with the collaboration of many stakeholders. Designing CLSC is especially crucial in electronic waste or e-waste. This study aims to use the Fuzzy TODIM technique to examine the uncertainty parameters used in modeling the CLSC and choose the best alternative to CLSC’s reproduction process for Waste Electrical and Electronic Equipment (WEEE) with regard to uncertain criteria. The usage of the Fuzzy TODIM application in CLSC’s reproduction process is contributed to the literature on a new implementation area of this approach. This study emphasizes six uncertain criteria (cost demand type of returned items returned quality returned quantity and time delay) while comparing three distinct forms of the WEEE reproduction process (recycling remanufacturing reuse/repair). This study demonstrated that reuse/repair reproduction is the best alternative followed by remanufacturing and recycling. Cost and return quality are the essential criteria among others. © 2023 Elsevier B.V. All rights reserved.
An Optimization Model for Vehicle Scheduling and Routing Problem
(Springer Science and Business Media Deutschland GmbH, 2022) Tunay Tokmak; Mehmet Serdar Erdoğan; Yigit Kazancoglu; Erdogan, Mehmet Serdar; Tokmak, Tunay; Kazançoğlu, Yiğit; N.M. Durakbasa , M.G. Gençyılmaz
Vehicle scheduling has a significant impact on the logistic operations of businesses and effective scheduling can increase customer satisfaction. In this context a vehicle scheduling model is developed to enhance the distribution operations of a company. The aim of the developed mixed-integer linear programming model is to minimize the number of vehicles departing in a day in order to decrease the extreme density that the company experiences on certain days. While designing the mathematical model due date constraints have been taken into consideration. However to propose better solutions due dates are expanded one day two days and three days respectively and the model is solved for each case. As due dates extended the number of vehicles departing in a day decreased significantly. The model is solved using IBM ILOG CPLEX (OPL) software for seven days and fifteen days periods by analyzing one month’s data acquired from the company’s database. As longer periods are optimized the model generates better results. However solution time increases. © 2022 Elsevier B.V. All rights reserved.
Analysing Barriers of Sales and Distribution Processes in Agrochemical Industry
(Springer Science and Business Media Deutschland GmbH, 2023) Elifsu Petek; Dilara Günaydın; Çisem Lafci; Yeşim Deniz Özkan-Özen; Yigit Kazancoglu; Günaydın, Dilara; Petek, Elifsu; Lafcı, Çisem; Özen, Yeşim Deniz Özkan; Kazançoğlu, Yiğit; N.M. Durakbasa , M.G. Gençyılmaz
The agrochemical sector has always been in the industry’s spotlight resulting in its unique characteristic that has impressive-expressive roles in the market and conflict-affected areas from the strict regulations. Especially sales patterns and distribution channels are the areas where most barriers emerge in this sector. Hence this study mainly aims to reveal the barriers confronting sales & distribution processes of the agrochemical industry and analyze them to display the causal relationship amidst barriers and prioritize them to focus on them to overcome them in further stages. In this context with the help of specialists a focus group discussion was held to determine the most important and pertinent barriers to the sales and distribution operations. Found barriers were analyzed through The Decision-Making and Evaluation Laboratory (DEMATEL) method which divides the interacting parts of a system into cause-and-effect groups as a structural modeling approach. © 2023 Elsevier B.V. All rights reserved.
Citation - WoS: 41
Citation - Scopus: 37
Analysis of factors impacting survivability of sustainable supply chain during COVID-19 pandemic: an empirical study in the context of SMEs
(EMERALD GROUP PUBLISHING LTD, 2023) Manish Mohan Baral; Rajesh Kumar Singh; Yigit Kazancoglu; Baral, Manish Mohan; Kazançoğlu, Yiğit; Singh, Rajesh Kumar
Purpose Nowadays many firms are finding ways to enhance the survivability of sustainable supply chains (SUSSCs). The present study aims to develop a model for the SUSSCs of small and medium enterprises (SMEs) during the COVID-19 pandemic. Design/methodology/approach With the help of exhaustive literature review constructs and items are identified to collect the responses from different SMEs. A total of 278 complete responses are received and 6 hypotheses are developed. Hypotheses testing have been done using structural equation modeling (SEM). Findings Major constructs identified for the study are supply chain (SC) performance measurement under uncertainty (SPMU) supply chain cooperation (SCCO) supply chain positioning (SCP) supply chain administration (SCA) supply chain feasibility (SCF) and the SUSSCs. From statistical analysis of the data collected it can be concluded that the considered latent variables contribute significantly towardsthe model fit. Research limitations/implications The present study contributes to the existing literature on disruptions and survivability. The study can be further carried out in context to different countries and sectors to generalize the findings. Practical implications The research findings will be fruitful for SMEs and other organizations in developing strategies to improve survivability during uncertain business environments. Originality/value The study has developed a model that shows that the identified latent variables and their indicators contribute significantly toward the dependent variable i.e. survivability. It contributes significantly in bridging the research gaps existing in context to the survivability of SMEs.
Citation - WoS: 23
Citation - Scopus: 27
ANALYSIS OF VARIABLES AFFECTING COMPETITIVENESS OF SMES IN THE TEXTILE INDUSTRY
(VILNIUS GEDIMINAS TECH UNIV, 2019) Caner Tacoglu; Cemil Ceylan; Yigit Kazancoglu; Taçoğlu, Caner; Ceylan, Cemil; Kazançoğlu, Yiğit
This paper(1) aims to develop strategy and policy suggestions to increase the competitiveness of SMEs in the textile industry by analyzing the variables that affect competitiveness and contribute to competitiveness literature by adopting a holistic approach to the analysis of competitiveness variables. A hybrid model composed of Delphi and fuzzy DEMATEL (Decision-Making Trial and Evaluation Laboratory) methods were used to gather and analyze the competitiveness variables. This led to the identification of the 15 most important of 73 competitiveness variables relevant to SME competitiveness in the textile industry. These variables were analysed and ranked and their causal relationships were mapped. The results obtained from the model may function as a reference for SME managers aiming to increase their firm's competitive power.
Citation - WoS: 6
Citation - Scopus: 7
Are we really addressing the roadblocks to adoption of renewable and sustainable energy technologies? Total interpretive structural modeling approach
(SPRINGER HEIDELBERG, 2024) Yigit Kazancoglu; Nazlican Gozacan; Sunil Luthra; Anil Kumar; Gozacan, Nazlican; Luthra, Sunil; Kumar, Anil; Kazançoğlu, Yiğit
Urban areas serve as a vital contribution to the global structural change towards renewable and sustainable energy technologies which also influence climate change. The aim of this paper is to identify the adoption roadblocks to renewable and sustainable urban energy technologies. This research has three parts: a mini-systematic literature study was conducted to identify the most prevalent roadblocks. Using total interpretive structural modeling (ISM) the relationships between the roadblocks and the source of causation were then examined. The roadblocks are classified based on their dependence and driving powers using MICMAC analysis in the third part of this research. The principal results and major conclusions demonstrate that all roadblocks are necessary for renewable and sustainable urban energy technologies. The roadblocks at level I are insufficient infrastructure lack of coordination among authorities lack of quality and reliable data and information and competition with non-renewable technologies, roadblocks in level II are lack of skilled and trained personnel limited public participation awareness and consumer interest and lack of standardized technology, roadblock in level III is high initial investment cost, and lastly roadblocks in level IV are lack of subsidies and financial support programs and absence of coherent related policies. Furthermore as a result of the MICMAC analysis none of the aforementioned roadblocks are classified as autonomous variables implying that they are all required. The dependent roadblocks to renewable and sustainable energy technologies are defined as lack of coordination among authorities lack of information and competition with non-renewable technologies. Moreover linkage roadblocks have high dependence and driving powers which are insufficient infrastructure limited awareness and consumer interest and lack of standardized technology. Lastly high initial investment costs lack of subsidies and financial support programs absence of coherent related policies and lack of skilled and trained personnel are the driving roadblocks with high driving power however not dependent.
Citation - WoS: 58
Citation - Scopus: 76
Behavioral factors on the adoption of sustainable supply chain practices
(Elsevier B.V., 2020) Anil Kumar; Md Abdul Moktadir; Syed Abdul Rehman Khan; Jose Arturo Garza-Reyes; Mrinal Tyagi; Yigit Kazancoglu; Khan, Syed Abdul Rehman; Moktadir, Md. Abdul; Garza-Reyes, Jose Arturo; Kumar, Anil; Tyagi, Mrinal; Kazançoğlu, Yiğit
Sustainable supply chain management (SSCM) has become a popular research topic among scholars as evidence suggests it has significantly contributed to achieve more environmentally conscious and socially responsible supply chains. Operational excellence (OE) on the other hand can be achieved by incorporating SSCM practices within existing supply chain operations. However due to human expertise involvement and commitment towards excelling at sustainable and operational performance the effective deployment of SSCM practices now depends on various human-based behavioral factors (BFs). Human behavior is dynamic in nature and hence has an effect on the implementation of SSCM practices. Nevertheless research on BFs in view of SSCM practices is limited. To fill this knowledge gap this study examines the nature of BFs for SSCM practices towards OE in supply chains particularly within the context of the footwear industry of Bangladesh. In the first phase the BFs were identified and determined through a literature review and empirical investigation. In the second phase the Hesitant Fuzzy DEMATEL method was used to establish the cause-effect relationships among the factors. The influence of group validation by experts and a literature survey along with managerial implications was discussed and explained in the third phase of the study. The results suggest that the factor ‘organization culture’ is the most influencing behavioral factor followed by ‘commitment from higher authority’. Both theoretical and practical contributions of the study are drawn from its findings helping footwear industry managers to more effectively adopt SSCM practices in the supply chain operations of their organizations to achieve OE. © 2020 Elsevier B.V. All rights reserved.
Citation - WoS: 27
Citation - Scopus: 47
Big Data-Enabled Solutions Framework to Overcoming the Barriers to Circular Economy Initiatives in Healthcare Sector
(MDPI, 2021) Yigit Kazancoglu; Muhittin Sagnak; Cisem Lafci; Sunil Luthra; Anil Kumar; Caner Tacoglu; Luthra, Sunil; Kumar, Anil; Lafcı, Çisem; Taçoğlu, Caner; Kazançoğlu, Yiğit; Sağnak, Muhittin
Ever-changing conditions and emerging new challenges affect the ability of the healthcare sector to survive with the current system and to maintain its processes effectively. In the healthcare sector the conservation of the natural resources is being obstructed by insufficient infrastructure for managing residual waste resulting from single-use medical materials increased energy use and its environmental burden. In this context circularity and sustainability concepts have become essential in healthcare to meliorate the sector's negative impacts on the environment. The main aim of this study is to identify the barriers related to circular economy (CE) in the healthcare sector apply big data analytics in healthcare and provide solutions to these barriers. The contribution of this research is the detailed examination of the current healthcare literature about CE adaptation and a proposal for a big data-enabled solutions framework to barriers to circularity using fuzzy best-worst Method (BWM) and fuzzy VIKOR. Based on the findings managerial policy and theoretical implementations are recommended to support sustainable development initiatives in the healthcare sector.
Citation - WoS: 2
Citation - Scopus: 2
Carbon Footprint of Food Production: A Systematic Review and Meta-Analysis
(Nature Portfolio, 2025) Onat, Nuri C.; Kucukvar, Murat; Kazançoğlu, Yiğit; Jabbar, Rateb; Al-Quradaghi, Shimaa; Al-Thani, Soud; Mandouri, Jafar
In the face of the urgent climate crisis, food production is a significant contributor to greenhouse gas emissions (GHG). We analyzed 118 life-cycle assessment (LCA) studies on GHG emissions of food production, considering LCA methods, life cycle phase, waste inclusion, and regional factors, including country, continent, and development status. Additionally, machine learning analysis identifies influential factors of GHG emissions of food production across seven categories: red meats, seafood, white meat, fruits & vegetables, animal products, other plant-based, and others (oils). Based on the gradient boosting algorithm, the LCA method choice ranks among the top determinants for GHG emissions in animal products, red meat, seafood, other plant-based products, and others food categories. Only 22% of studies include waste, revealing up to 39% higher emissions in some categories compared to those excluding waste. Our meta-analysis presents min-max-average GHG emission results for each food category, within countries, different scope settings, waste considerations, and LCA methods.
Citation - Scopus: 272
COVID-19 impact on sustainable production and operations management
(KeAi Communications Co., 2020) Aalok Kumar; Sunil Luthra; Sachin Kumar Kumar Mangla; Yigit Kazancoglu; Kumar, Aalok; Luthra, Sunil; Mangla, Sachin Kumar; Kazançoğlu, Yiğit
The global production and supply chain system is mostly disrupted due to widespread of the coronavirus pandemic (COVID-19). Most of the industrial managers and policymakers are searching for adequate strategies and policies for revamping production patterns and meet consumer demand. Form global supply chain perspectives the majority of raw materials are imported from China and other Asian developing nations. The COVID-19 pandemic has broken the most of transportation links and distribution mechanisms between suppliers production facilities and customers. Therefore it is imperative to discuss sustainable production and consumption pattern in the post-COVID-19 pandemic era. Most of the prominent economies around the world enforced a total lockdown and the focus has since shifted to surge in demand for essential products and services. This has led to a decline in demand for some nonessential products and services. The production and operations management challenges of the pandemic situations are discussed and adequately proposes policy strategies for improving the resilience and sustainability of the system. This paper also discusses the different operations and supply chain perspectives for handling such disruptions in the future. © 2024 Elsevier B.V. All rights reserved.
Citation - WoS: 1
Citation - Scopus: 3
Decoding the Nexus: A Bibliometric Review on Sustainability- Circular Economy- and Consumer Food Waste
(MDPI, 2024) Miray Baybars; Fatma Demircan Keskin; Ipek Kazancoglu; Yigit Kazancoglu; Demircan Keskin, Fatma; Baybars, Miray; Kazançoğlu, İpek; Kazançoğlu, Yiğit; Keskin, Fatma Demircan
One of the issues that has gained importance within the scope of the United Nations Sustainable Development Goals (SDGs) is the issue of food waste. These goals which represent very important and urgent problems to be solved at the global level are extremely critical in terms of sustainability. Food waste by its nature at the intersection of economic social and environmental sustainability goals has become a global problem linked to key challenges in the global environment in terms of food security climate change malnutrition and economic sustainability. The fact that consumers are one of the most important factors affecting food waste in the transition to a circular economy increases the importance of this study once again. Due to the lack of systematic chronological studies showing how food waste develops over time this study will examine the development and evolution of food waste research using a bibliometric analysis. In this way it aims to gain a comprehensive insight into the field's current state and shed light on this highly important area of study. In addition to informing policymakers practitioners and consumers with the results of this research it is also aimed to support all relevant individuals institutions and organizations in the efforts to combat food waste. One of the main objectives of this study is to contribute to the achievement of the United Nations Sustainable Development Goals (SDGs). For this reason it can be stated that the research has objectives in line with SDG 12: Responsible Consumption and Production and SDG 13: Climate Action.
Dış ticaret firmalarının lojistik faaliyetlerinde dış kaynak kullanımı ve Türkiye'deki buğday unu ihracatçıları üzerine bir uygulama
(2018) Dalkılıç, Bilge; Kazançoğlu, Yiğit
Globalleşen dünyada, ülkeler için dış ticaretin önemi her geçen gün artmaktadır. Lojistik faaliyetlerin başarı ile yürütülmesi, dış ticaret üzerinde büyük öneme sahiptir. Literatürde yapılan çalışmalarda, lojistik faaliyetlerde dış kaynak kullanımının lojistik faaliyetleri olumlu yönde etkilediği görülmüştür. Türkiye buğday unu ihracatında, 2010 ve 2016 yılları arasında dünyanın en fazla buğday unu ihraç eden ülkesi olmuştur. 2017 yılı için ihracat rakamları henüz açıklanmamış olmakla birlikte 2017 yılında da önemli başarı elde edileceği düşünülmektedir. Çalışma, lojistik faaliyetlerde dış kaynak kullanımının Türkiye'deki buğday unu ihracatçıları tarafından nasıl algılandığı, lojistik faaliyetlerde dış kaynak düzeyinin ne kadar olduğu, lojistik faaliyetlerde dış kaynak kullanma ve kullanmama sebepleri, hangi lojistik faaliyetlerde dış kaynak kullanımının tercih edildiği konularında nitel analiz yöntemi ile saptamalarda bulunmayı amaçlamıştır. Çalışma sonucunda Türkiye'deki buğday unu ihracatçısı firmaların tamamının lojistik faaliyetlerinde dış kaynak kullanmadıkları, dış kaynak kullanan firmaların ise ağırlıklı olarak taşımacılık ve gümrükleme faaliyetlerinde gerçekleştirdikleri, lojistik faaliyetlerin tamamına yayılmış bir dış kaynak kullanımından söz edilemediği saptanmıştır.
Citation - WoS: 4
Citation - Scopus: 7
Drivers for circular economy development: making businesses more environmentally friendly
(SPRINGER HEIDELBERG, 2023) Antonio Eiti Kurita; Maximilian Espuny; Thalita Laua Reis Campos; Yigit Kazancoglu; Jayakrishna Kandsamy; Otavio Jose de Oliveira; Campos, Thalita Láua Reis; Kandsamy, Jayakrishna; Kurita, Antonio Eiti; Espuny, Maximilian; de Oliveira, Otávio José; Kazançoğlu, Yiğit
Stakeholders have been pressuring companies to develop more environmentally friendly strategic and operational solutions. In this sense companies are seeking alternatives that reduce the negative impacts of organizational activities Circular Economy (CE) is one of the solutions with the greatest potential for success. Thus the goal of this paper is to provide drivers for organizations' transition from a linear to a CE. For this reason content analysis was used as the scientific method for being appropriate for the interpretation of qualitative data and the identification clustering and systematization of themes in a given field of knowledge. In the case of this work a set of 30 articles with information related to the implementation and development of CE were analyzed allowing the identification of 19 key elements of CE. These key elements were then grouped and systematized into four drivers: decision-making, capacity and training, sustainable practices, and green supply chain. Scientifically this work contributes to the improvement and increase of the block of knowledge about the CE because the drivers can be used to advance the state of the art and as a starting point for the development of new research. In an applied way the drivers proposed in this article provide a range of actions for managers to make their companies greener and improve their organizational performance thus contributing environmentally and socially to the planet.
E-Waste and Reverse Logistics: Forecasting and Cause and Effect Analysis for an Emerging Economy
(2020) Pala, Melisa Özbiltekin; Kazançoğlu, Yiğit
Reverse logistics activities based on circular economy perspective including recycling, reuse, remanufacturing, and reconditioning gain more attention. Moreover, circular economy is an essential approach for waste management, and it provides economic, environmental and social benefits. Recently, with the changing technology and increasing population, the usage times of electrical and electronic products are also shortening and the inability to adapt these products to the circular economy causes electronic waste generation especially in emerging economies because reverse logistics activities based on circular economy cannot be carried out effectively due to the shortcomings experienced and the fact that wastes that can be utilized become garbage. For this purpose, the thesis is structured around mobile phones which the most emerging electronic waste in Turkey. First of all, the future state analysis of electronic wastes in Turkey is made to show the electronic waste increase status with Grey Prediction method as a case study. After that, the challenges affecting the recycling of electronic waste especially mobile phones are gathered under 7 main headings such as ecological, social, economic, infrastructural and technological, legal, managerial and business, supply chain management dimensions with 25 criteria totally. These challenges are analysed by 8 experts with the implementation of Fuzzy DEMATEL. It is aimed to create a road map for companies and governments based on sustainable and circular solutions by researching the reasons that affect the recycling of mobile phones. This way, it has been determined that legal deficiencies generally affect the recycling process of electronic waste. Accordingly, problems such as environmental pollution, damage to human health, and valuable waste that could not be recycled to the economy have been identified. Keywords: Circular Economy, Reverse Logistics, E-Waste
Citation - WoS: 13
Citation - Scopus: 14
Evaluation of Transition Barriers to Circular Economy: A Case from the Tourism Industry
(RAM ARTI PUBL, 2021) Kemal Vatansever; Haris Akarsu; Yigit Kazancoglu; Akarsu, Haris; Vatansever, Kemal; Kazançoğlu, Yiğit
Current economic system exhibits a linear path by using resources to produce goods and disposing of waste after their consumption. Circular economy (CE) turns this linear pattern into a circular one by using waste as a resource for another process. It focuses on environmental responsibility efficiency renewable resources preventing wastage and minimizing consumption. CE helps the sustainability of the economy by restructuring the production processes to use fewer resources and extending the lifetime of the products. Although there are powerful drivers for transition to CE firms often face significant barriers while implementing their plans. This study aims to evaluate the barriers that the tourism industry would face during the transition process and put them in order according to their importance. We used the Interval Type-2 Fuzzy Analytical Hierarchy Process (FAHP) method which is based on a pairwise comparison of relevant criteria to calculate the weights of importance of these barriers. We conducted semi-structured interviews with four experts from the tourism industry. According to our results the most important barrier is organizational structure/infrastructure that creates inconvenience with the supply chain. The results are expected to be a guide for the firms in the tourism industry for their transition to CE applications.
Green and sustainable freight logistics for improving supply chain sustainability: A bibliometric analysis
(De Gruyter, 2020) Aalok Kumar; Ramesh Anbanandam; Golam Kabir; Yigit Kazancoglu; Kabir, Golam; Kumar, Aalok; Anbanandam, Ramesh; Kazançoğlu, Yiğit
The concept of green and sustainable freight transport practices is evolving rapidly and attracted the attention of academic researchers and transport practitioners. This chapter provides a review of green and sustainable freight transport practices measure for providing a better understanding of evolving research fields. The literature review considered 20 years of research data for analyzing the research pattern. This chapter uses bibliometric and network analysis for analyzing the scientific mapping of green and sustainable freight transport practices. The chapter also analyzes the most influencing research articles of the field top contributing authors organizations and key research areas related to the field. The most explored research clusters are presented along with future research directions. © 2021 Elsevier B.V. All rights reserved.
Havalimanı operasyon yönetiminde net sıfır emisyonlu hidrojen çözümlerine geçiş: Airport örneği
(2025) Sezer, Mürüvvet Deniz; Ada, Erhan; Kazançoğlu, Yiğit
Hidrojene geçişin amacı, fosil yakıt bağımlılığını azaltarak daha sürdürülebilir, düşük karbonlu ve enerji güvenliği yüksek bir sistem geliştirmektir. Güneş enerjisi gibi yenilenebilir enerji kaynakları ile üretilen hidrojen, sürdürülebilir kalkınma hedefleri ile de doğrudan ilintilidir. Özellikle yenilenebilir kaynaklardan üretilen yeşil hidrojen sıfır karbon emisyonludur ve iklim değişikliğiyle mücadelede kritik öneme sahiptir. Ulaştırma sektörü gibi karbon yoğun sektörlerde hidrojen etkili bir çözümdür. Hidrojen üretimi, depolama, taşıma ve altyapı yatırımlarıyla yeşil kalkınmaya katkı sağlamaktadır. Ancak hidrojen sisteminin oluşturulmasındaki en önemli engellerinden biri yüksek yatırım maliyetleridir. Özellikle gelişmekte olan ülkelerde, yani geçişin daha ilk aşamasında olan ülkelerde, yeşil hidrojen üretimi, taşıma, depolama ve altyapı yatırımları oldukça pahalıdır ve hidrojen konusunda net politikalar, hedefler ve teşvik mekanizmaları eksik ya da yeni gelişmektedir. Bu kapsamda bu çalışmanın amacı havaalanı yer hizmetlerinde hidrojene geçiş için fayda maliyet analizini yapmaktır. Ayrıca bu çalışma hidrojene geçişte, sürdürülebilirliğin üç saç ayağının başarılmasını sağlamayı hedeflemektedir. Yeşil hidrojene geçişin ekonomik, sosyal ve çevresel etkileri analiz edilmiştir. Bu dönüşümün en önemli etkisinin çevresel boyut üzerinde olacağı düşünülse de uzun dönemde hem sosyal hem de ekonomik fayda sağlayacağı görülmüştür. Sonuçlara göre hidrojene geçişin önemli ölçüde yatırım maliyeti gerektirdiği yadsınamaz, fakat hidrojene geçişin uzun dönemde rekabet avantajı sağlayacağı ve özellikle karbon emisyon vergileri de dikkate alındığında karlı bir yatırım olduğu görülmüştür. Sonuçlar baz alınarak, hidrojen ekosisteminin önemli paydaşlarından olan endüstri ortakları, politika yapıcılar, yerel ve küresel otoriteler ve araştırma kurumlarının bu hedeflerinin başarılmasındaki rolü tartışılarak çeşitli öneriler geliştirilmiştir.
Lojistik faaliyetlerinin döngüsel ekonomi performans değerlendirmesi
(2021) Berberoğlu, Yalçın; Kazançoğlu, Yiğit
Growing world population and demand for products makes linear economy inadequate. So, there is a need for a circular economy. Circular economy is based on three subjects which are economic, social, and environmental. Logistics activities have a key role in circular economy. The goal of this paper is to create a framework that assesses the circular economy performances of logistics activities for companies. 30 experts are surveyed to create a criteria set. Fuzzy statements used for ranking the criteria. CFCS (Converting Fuzzy data into Crisp Scores) method is used for defuzzification. IBM ILOG CPLEX Optimization Studio version 20.1.0 is used for applying the selected multi-criteria decision-making method which is Data Envelopment Analysis.