Recently, there emerge a variety of clouds in sky and thus, several similar cloud services (from different cloud venders) can be provided to a mobile end device. The goal of cloud-path selection is to find an optimal cloud-path pair between the mobile device and a cloud among a certain class of clouds that provide the same service, in order to carry out the offloaded computation tasks. It is ea...

Supplier selection is an important strategic decision for construction companies due to long-term project durations and high costs. In the sector, supplier decisions should take several criteria alternatives into account. Along with number of alternative suppliers, choosing best method evaluate suppliers another critical step. this study, we compare effectiveness different multi-criteria decisi...

This paper aims to develop a benchmarking framework that evaluates the cold chain performance of a company, reveals its strengths and weaknesses and finally identifies and prioritizes potential alternatives for continuous improvement. A Delphi-AHP-TOPSIS based methodology has divided the whole benchmarking into three stages. The first stage is Delphi method, where identification, synthesis and ...

Spread mooring systems are associated with high level uncertainties and risks during tanker loading/ unloading operations. In addition, the design of such complex systems consists of many subjective and imprecise parameters. Therefore, in the present study, a fuzzy based decision support methodology is designed to overcome aforementioned characteristics. The fuzzy methodology incorporates quali...

Energy has been universally recognized as a key element for sustainable development. In developing countries, such as Turkey, energy demand increases thanks to a fast growing population and economy, posing threats of energy availability in the next decades. For this reason, Turkey has to evaluate and develop domestic, clean, and reliable energy sources from different alternative sources for sus...

Forthcoming wireless environment is a fusion of numerous networks with diverse technologies deployed by individual operators. In such an environment, innovative network selection methodologies are required not only to provide “always best connected” service to mobile users but also to maximize network operator’s revenue. To fulfill such requirements, multiple attributes from each network are to...

“The theory of decision analysis (DA) is designed to help the individual make a choice among a set of prespecified alternatives” (Keeney and Raiffa 1976, vii). Simply put, the basic DA problem is, How should a decision maker select from a given set of competing alternatives that are evaluated against conflicting objectives? Because operations research (OR) is the science of decision making, OR ...