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Öğe Defining reverse and green supplier selection criteria with a strategic management approach(Springer Science and Business Media Deutschland GmbH, 2023) Akkartal, Gonca Reyhan; Mızrak, FilizToday, the environmental problems that emerged over time because of industrialization and globalization and the depletion of natural resources have forced businesses and managers to consider environmental factors while determining their management styles. From this perspective, businesses try to add not only economic value but also ecological value to all their activities to increase their environmental performance. Businesses do this by integrating green activities into all their components in the supply chain network and collaborating with suppliers who care about the environment. However, in the realization of environmental awareness and its increasing importance for companies, green and reverse suppliers create budget constraints for businesses and choosing all of them at the same time is extremely challenging financially. In this context, the aim of this study is to reveal the criteria to be considered when choosing reverse and green suppliers by benefiting from the current literature and to shed light on the strategies that companies should develop when choosing suppliers.Öğe Developing a strategic framework for airline destination selection: a multi-criteria decision-making approach applied to Turkish airlines(2025) Mızrak, Filiz; Mızrak, Kağan Cenk; Akkartal, Gonca ReyhanThe purpose of this study is to develop a comprehensive decision-making framework that airlines can use to strategically select new destinations, demonstrated here with a case application for Turkish Airlines. Addressing the complexities of route expansion, the study integrates the Entropy weighting method with the 2-Tuple Linguistic T-Spherical Fuzzy Decision by Opinion Score Method (2TLTS-FDOSM) to evaluate potential destinations across critical criteria, including market demand, economic impact, and regulatory environment. Data were collected from industry reports, expert evaluations, and publicly available aviation metrics to support a thorough and adaptable analysis. Findings from the Turkish Airlines case reveal San Antonio, TX (SAT), Portland, OR (PDX), and Nashville, TN (BNA) as top-ranked destinations, each offering distinct economic and operational benefits. This study contributes to aviation management literature by presenting a versatile, data-driven framework that can guide route selection for carriers in competitive markets. The framework's ability to balance quantitative and qualitative insights underscores its potential for broader application in network planning, promoting sustainable growth within the aviation industry.Öğe Evaluation of competition strategies applied in logistics management during the pandemic process: A research on logistics companies in Istanbul(ACC Publishing, 2022) Akkartal, Gonca Reyhan; Çulhaoğlu Uludağ, CandideThis study aims to determine the changes in the changing competition, growth, and customer strategies within the scope of the logistics management of the COVID-19 process that affects the whole world. The study will be carried out in the form of an interview, and it will be evaluated how the changes in the supply chain processes during the pandemic process reflect on the competition, growth, and customer strategies business basis. According to the results, recommendations will be made to companies operating in the logistics sector in parallel with the changes in competition, growth, and customer strategies. The study results include the need for speed, digitization, improving the quality of customer relationships, working from home, and expanding e-commerce to create a competitive advantage.Öğe Operational efficiency and competitiveness in the global logistics industry: An examination of human resources management strategies(IGI Global, 2024) Akkartal, Gonca Reyhan; Mızrak, FilizThe logistics industry, with its inherent complexities and dynamic challenges, relies heavily on strategic human resources management (HRM) practices to optimize workforce potential and navigate the multifaceted demands of the global market. Utilizing the fuzzy analytic hierarchy process (Fuzzy AHP) as a decision-making tool, the research aims to unravel the intricate relationship between these strategies and the dynamic logistics sector. Employing a hybrid methodology that integrates an extensive literature review, insights from expert interviews with HR specialists in the Turkish logistics sector, the study examines how logistics companies optimize efficiency and competitiveness while navigating uncertainties. The findings highlight the foundational importance of talent acquisition, emphasizing innovative recruitment, targeted training, and empowerment. performance management takes center stage, emphasizing the critical role of aligning key performance indicators, maintaining a continuous feedback loop, and implementing recognition and rewards programs.Öğe Prioritizing cybersecurity initiatives in aviation: a dematel-qsfs methodology(2024) Mızrak, Filiz; Akkartal, Gonca ReyhanThe aviation industry's growing dependence on digital technologies necessitates robust cybersecurity measures to counter advanced threats. This study integrates the Decision-Making Trial and Evaluation Laboratory (DEMATEL) method with Quantum Spherical Fuzzy Sets (QSFS) to enable precise and reliable decision-making under uncertainty. Key criteria, identified through expert evaluations, include Threat Detection Systems (TDS), Data Encryption Protocols (DEP), Regulatory Compliance (RC), Incident Response Plans (IRP), User Training (UT), Access Control Mechanisms (ACM), and Network Security Solutions (NSS). Analysis using the proposed method revealed that “Regulatory Compliance” and “Threat Detection Systems” are the most influential factors, emphasizing the need for strict adherence to standards and advanced threat detection capabilities. Additionally, the significance of “User Training” and “Data Encryption Protocols” underscores the importance of comprehensive training programs and strong encryption measures. By incorporating strategic management theories such as the Resource-Based View (RBV), Contingency Theory, and Risk Management Theory, this study presents a strategic framework to assist aviation organizations, policymakers, and researchers in developing effective cybersecurity strategies, ensuring the safety and security of global air travel.Öğe Strategic management of digital transformation processes in the aviation industry: Case of Istanbul Airport(IGI Global, 2023) Mızrak, Filiz; Akkartal, Gonca ReyhanThe Fourth Industrial Revolution has profoundly affected all sectors, quickly leading to significant technological changes. This new revolution has also affected aviation systems that have a direct connection with technology. This revolution has brought about rapid changes especially in airport systems and led to the emergence of the concept of “smart airport.” In this study, the case of Istanbul Airport has been analyzed in terms of digital transformation in order to exemplify the digital applications in an airport. In this scope, the aim of the study is to present a new projection, integrated with a digital business strategy, to businesses operating in the airline industry, where they can successfully realize the digital transformation process and manage this process strategically.Öğe Uluslararası denizyolu taşımacılığında yaşanan tehditler ve çözüm önerileri(Beykoz Üniversitesi, 2021) Akkartal, Gonca ReyhanBu çalışmanın amacı, küresel ticaretin yaklaşık %90 gibi önemli bir kısmının gerçekleştiği uluslararası denizyolu taşımacılığında önemi her geçen gün artan tehditlerin belirlenmesi ve bu tehditlerin yönetilmesi konusunda firmalara önerilerde bulunulmasıdır. Çalışmada yüz yüze mülakat tekniğine bağlı olarak katılımcılara önceden belirlenmiş olan denizyolu taşımacılığında karşılaşılan tehditleri yönetebilmeleri ile ilgili sorular yöneltilmiştir. Mülakatın sonunda elde edilen veriler ışığında bu tehditleri yönetebilmek için tercih ettikleri metotlar kategorize edilerek önerilerde bulunulmuştur. Yapılan mülakatlar sonucunda elde edilen bulgular arasında uluslararası deniz ticareti yapan firmaların dış tehditlerle daha çok karşılaştıkları, içsel tehditlerle başa çıkmanın daha kolay olduğu çünkü kendi bünyelerinde karşılaşılan tehditlerle başa çıkabilmenin maliyet olarak daha düşük olduğu saptandı. Araştırma sonucuna göre Dünyada denizyolu ulaşımının tehditlerin arasında en büyüğünün korsanlık ve haydutluk olduğu ve uluslararası Kuruluşların gemilerin güvenliğe yönelik daha çok çalışma yapması gerektiği ortaya konulmuştur.Öğe Warehouse location decision in medical sector: A fuzzy comparative study in post-covid era(Springer Science and Business Media Deutschland GmbH, 2022) Tuncalı Yaman, Tutku; Akkartal, Gonca ReyhanWithout a doubt, the location of the warehouse is a momentous decision in the post-Covid era. Considering a contemporary problem, the authors are aimed to reveal changes in the criteria importance determined in the selection of the warehouse location for the medical products. The difference will be unveiled by comparing the actual situation with the results of a previous study that examined pre-Covid phase evaluations of medical sector professionals and reported the criteria’ importance in ware-house location selection. In the earlier study, the Pythagorean fuzzy (PF)-based-DEMATEL was used to find out the criteria importance. In this study, the importance of the criteria in the warehouse location decisions in the medical sector was revealed by making re-evaluations by a decision-making group consisting of industry professionals. In order to create a proper representation of the post-Covid state, the same methodology was applied in the calculation of criteria importance. Thus, compared to pre-Covid phase, the change in the perceived role of proximity to target markets criterion is found on warehouse location decisions in the medical sector.Öğe Warehouse location selection decision systems for medical sector(Institute of Electrical and Electronics Engineers Inc., 2020) Tuncalı Yaman, Tutku; Akkartal, Gonca ReyhanWarehousing as well known, one of the most important parts of logistics. Today, the efficient and safe operation of storage activities are vital for companies. For this reason, companies have to pay attention to many factors when they are going to construct a warehouse. The most important factors are the structure of land, service availability, the geographical location, distance to customs or ports, climate, natural disaster risk, the social structure of the environment, distance to service markets, infrastructure availability (electricity, gas, natural gas), distance to hospitals and pharmacies. The goal of the paper is to evaluate the factors affecting the decision-making process of location selection of a warehouse for medical materials and services. As part of special material handling, medical goods need to be handled much more carefully. That is why, as far as the medical issues concerned additional criteria might be taken into consideration by the decision-makers. The priorities and alternatives will be discussed and ranked in the following part of this research. Besides, basic and supplementary criteria and their interrelation are determined by Pythagorean fuzzy set (PFS) based DEMATEL technique in order to be a guide for the medical executives.
