Three types of fuzzy random programming for capacitated location-allocation problem with fuzzy random demands are proposed according to different criteria, including the expected value model, chanceconstrained programming and dependent-chance programming. Finally, integrating the network simplex algorithm, fuzzy random simulation and genetic algorithm, a hybrid intelligent algorithm is produced...

This paper approaches a recent hybrid evolutionary algorithm, called Evolutionary Clustering Search (ECS), that proposes a way of detecting promising areas combining an evolutionary algorithm and a iterative clustering. The search strategy become more aggressive in such detected areas by applying local search. In this paper, we developed a preprocessing phase for the ECS applying a locationallo...

High-speed internet access is a becoming a greater necessity for people to participate in today’s economy. However, even though broadband networks have been greatly expanded, there are still areas that do not have access. This study examines the extent to which Winona County, Minnesota is connected to the internet via broadband connection and the opportunities for expanding broadband penetratio...

The Maximal Covering Location Problem (MCLP) maximizes the population that has a facility within a maximum travel distance or time. Numerous extensions have been proposed to enhance its applicability, like the probabilistic model for the maximum covering locationallocation with constraint in waiting time or queue length for congested systems, with one or more servers per service center. This pa...

INTRODUCTION ILI data is collected via an Influenza Sentinel Provider Surveillance Network at the state level. Because participation is voluntary, locations of the sentinel providers may not reflect optimal geographic placement. This study analyzes two different geographic placement schemes – a maximal coverage model (MCM) and a K-median model, two locationallocation models commonly used in geo...

The design and management of a multi-stage production/distribution system is one of the most critical problem in logistics and in facility management. This manuscript deals with the so called facility locationallocation problem, i.e. with the simultaneous decisions regarding the design, management, and control of a distribution network. In particular the logistic problem object of this study de...

Focusing on the environmental issues, including the reduction of scrap and consumer residuals, along with the benefiting from the economic value during the life cycle of goods/products leads the companies to have an important competitive approach. The aim of this paper is to present a new mixed nonlinear facility locationallocation model in recycling collection networks by considering multi-ech...