Derya Deliktaş

• PhD
• University of Nottingham

In today’s competitive environment, evaluating and selecting stocks for portfolio optimization is a critical challenge for investors, especially under conditions of uncertainty. Traditional approaches often fail to address the complexities of multi-criteria decision-making (MCDM) in real-world investment scenarios. This study introduces a novel fuz...

In multi-stage processes, classical Data Envelopment Analysis (DEA) acts like a black box and measures the efficiency of decision-making units (DMUs) without considering the internal structure of the system. Unlike classical DEA, recent studies have shown that the overall system efficiency scores are more meaningful if researched using the Network...

The primary challenge in assembly line design is the need for more appropriately allocating tasks and workers to workstations. This study addresses the problem of line balancing and worker assignments, considering the performance disparities among workers during the line balancing process. In the relevant literature, this problem is known as the As...

Sağlık hizmeti alanında, hastaneler için kesintisiz hizmet esastır. Bu nedenle, vardiyalı çalışma, talep kısıtları ve devlet düzenlemeleri gibi kısıtların karşılanabilmesi açısından oldukça önemli bir rol oynamaktadır. Doktor nöbet cetveli çizelgeleme problemi, problemin karmaşıklığı ve büyüklüğü sebebiyle NP-zor problem grubu içerisinde tanımlanma...

This data article presents a description of a benchmark dataset for the multi-objective flexible job shop scheduling problem in a cellular manufacturing environment. This problem considers intercellular moves, exceptional parts, sequence-dependent family setup and intercellular transportation times, and recirculation requiring minimization of makes...

Purpose Assembly lines are widely employed in manufacturing processes to produce final products in a flow efficiently. The simple assembly line balancing problem is a basic version of the general problem and has still attracted the attention of researchers. The type-I simple assembly line balancing problems (SALBP-I) aim to minimise the number of w...

This paper deals with an overview of flowshop group scheduling problems in the manufacturing environment. The aim of this paper is twofold: (i) making a comprehensive survey of research on flowshop group scheduling problems in manufacturing systems, and (ii) presenting a bibliometric analysis. We address the general definition of flowshop group sch...

Due to buildings’ high energy consumption and environmental impacts, selecting an appropriate thermal insulation board is crucial in reducing energy consumption in an existing building. Therefore, thermal insulation board selection has become an important issue. This study presents a combined fuzzy group decision-making approach that consists of th...

Due to natural disasters, urban transformations and many other factors, sustainable end-of-life buildings (ELBs) waste management is gaining importance within the last decades, which is vigorous for both economic and conservation matters. Turkey is located on active zones in terms of natural disasters and faced numerous destructive events. Therefor...

Over the recent decades, Markowitz mean-variance models with additional constraints and objectives have still attracted the attention of many researchers. Stock evaluation and portfolio optimization have a decision-making process that contains tangible and intangible factors under vague parameters. This study presents an integrated approach includi...

This study proposes a hybrid approach for the selection of students employed part-time at the various departments of a university. There are both qualitative and quantitative criteria for the selection of students. Thus, to handle the subjective assessment in the decision-making process, this study considers developing DEMATEL-modified ANP and MULT...

Objectives: Self-colored dental zirconia blocks eliminate the drawbacks of the coloring process of traditional blocks and ensure disposal time and cost in dental prosthesis laboratories. Like traditional dental zirconia frameworks, self-colored dental zirconia frameworks are produced by grinding pre-sintered zirconia blocks via manual or CAD/CAM op...

The multi-objective genetic algorithm approach for solving the Porcelain Container Loading Problem (PCLP) has a vital role in the global logistics industry. In this paper, a logistical problem with one constrained container loading problem that has to be filled with a set of boxes has been the focus. This study addresses a real-life problem that ex...

This paper proposes a single machine scheduling problem with learning-effect and release times by considering two objectives requiring minimization of makespan and total tardiness, simultaneously. Due to the NP-hardness of this problem, two memetic algorithms with meme variants are presented for solving the bi-objective problem and applied by combi...

The multi-objective flexible job shop scheduling in a cellular manufacturing environment is a challenging real-world problem. This recently introduced scheduling problem variant considers exceptional parts, intercellular moves, intercellular transportation times, sequence-dependent family setup times, and recirculation requiring minimization of mak...

This paper addresses a genetic algorithm approach for solving a single machine scheduling problem considering the learning effect on sequence-dependent setup times. The objective of the proposed model is to minimize the makespan. Scheduling problems are referred to as the NP-hard. Since genetic algorithm parameters influence the result of the solut...

In this paper, we proposed novel mathematical models involving both single and bi-objective functions that deal with a flexible job shop scheduling problem in cellular manufacturing environment by taking into consideration exceptional parts, intercellular moves, intercellular transportation times, sequence-dependent family setup times, and recircul...

In this study, a fuzzy multiple criteria decision-making approach is proposed to select an industrial engineer among ten candidates in a manufacturing environment. The industrial engineer selection problem is a special case of the personal selection problem. This problem, which has hierarchical structure of criteria and many decision makers, contai...

In this paper, an order picking problem with the capacitated forklift in a warehouse is studied by considering the total distance and the penalized earliness and tardiness. These objectives are important to reduce transportation costs and to satisfy customer expectations. Transportation costs are related to the total distance. In addition, earlines...

In this paper, bus stop selection problem is studied to determine a set of bus stops and assign employees to these ones by considering the total walking distance of employees and the number of bus stops. These objectives are crucial to minimizing total pick-up/delivery time of buses and total walking distance of employees. The total walking distanc...

Student selection is a multi-criteria decision making problem which includes both tangible and intangible factors. In these problems if educational institutions have budget or other different constraints two problems will exist: which students are the best and how students are assigned to the predefined programs? In this study, an integrated approa...

In this study, a fuzzy multiple criteria decision making approach is applied to the Auto Components Industry to select an industrial engineer among ten candidates. The industrial engineer selection problem has multiple criteria, hierarchical structure of those criteria and multiple decision makers. Also, the evaluation process of decision makers in...

This study proposes a multi-choice goal programming for the single machine scheduling problem of minimizing the weighted number of tardy jobs, the total weighted completion time and makespan with sequence-dependent setup times. In this problem, there are n candidate jobs for processing in a single machine, each job has a weight, a due date, a proce...

The number of university students participating in exchange programs has risen increasingly over the last decade. Student mobility, or studying at universities other than the institution at which the student originally matriculated, has been an important element in a fully rounded academic education for a long time. Therefore, the student mobility...

This study proposes a multi-choice goal programming for the single machine scheduling problem of minimizing the weighted number of tardy jobs, total weighted completion time and makespan with sequence-dependent setup times. In this problem, there are n candidate jobs for processing in a single machine, each job has a weight, a due date, a processin...

University education has an important role for human beings to gain expert knowledge required from the real life. The universities consist of various faculties and related departments based on the expertise area to meet the demand. At this point, they should be designed according to the requirements of the organizations. The requests of the managem...

In recent years, the mobility has become one of the most important goals of the European Union (EU). Erasmus (European Region Action Scheme for the Mobility of University Students) Program is the EU program which encourages Higher Education Institutions to cooperate with each other. This program conducts short-term exchange of students and staff. T...

Bu çalışmada Bologna süreci kapsamında lisans programlarının ders planlarının güncellenmesi aşaması ele alınmıştır. Avrupa ve Türkiye'deki benzer Endüstri Mühendisliği programlarının ders planları göz önünde bulundurularak, dersler belirlenmiştir. Avrupa Kredi Transfer ve Biriktirme Sistemi değerleri, ders sayısı, dönem sayısı, ilgili diğer paramet...