Yaşar University

About: Yaşar University is a education organization based out in Izmir, Turkey. It is known for research contribution in the topics: Exergy & Job shop scheduling. The organization has 760 authors who have published 1436 publications receiving 20813 citations. The organization is also known as: Yaşar Üniversitesi.

Multi-commodity k-splittable survivable network design problems with relays

Abstract: The network design problem is a well known optimization problem with applications in telecommunication, infrastructure designs and military operations. This paper devises the first formulation and solution methodology for the multi-commodity k-splittable two-edge disjoint survivable network design problem with capacitated edges and relays. This problem realistically portrays telecommunications network design but has not been solved previously due to its computational difficulty. Edge capacity is considered as either a discrete or a continuous variable. An exact method and a practical heuristic method are presented, and computational results are discussed.

Does it really worth investing in relationship marketing for a port business

Abstract: Container terminals have been facing intense competition and continuously changing environment due to some forces such as strategic alliances, privatization, overlapping hinterlands, and global terminal operators. To justify high investment and operation costs and to achieve profitability container terminals must attain satisfactory cargo volumes. Practically, physical investments and cooperation among ports are current ways that ports struggle with new forces in the container transportation market. In addition, customer loyalty is an important asset for a port to ensure adequate flows. This study investigated the impacts of relationship marketing tactics on container terminals’ financial and non-financial performance indicators. The data was collected from 24 container terminals located in Turkey (134 responses) and analyzed through multilevel structural equation modeling. Based on the results our core conclusion is that the more a port implements relational marketing tactics, the higher the quality of the relationship with the customer, which then returns to it as the performance of the customer relationship and consequently the financial performance.

Effects of varying input and output points on new aisle designs in warehouses

Abstract: New aisle designs have been proposed for unit-load warehouses recently in the literature. Most of these designs propose reduction in single-command expected travel distance considering flow from only one input/output (IO) point which is centrally located on the bottom of warehouse. Therefore, in this study we investigate the effects of varying number of IO points on both the layout and the distance. We use a warehouse network model to calculate expected single-command distance. We also use a Particle Swarm Optimization algorithm to search for the optimal values of the warehouse design variables. We showed that Leaf designs are robust for less than 7 input and output points on the bottom of the warehouse.

Adolescents’ eveningness chronotype and cyberbullying perpetration: the mediating role of depression-related aggression and anxiety-related aggression

Abstract: Recent empirical evidence has indicated a positive relationship between university students’ evening-type chronotype and their cyberbullying perpetration (CBP) scores while controlling for