In this work we present the extension of a variable neighborhood search (VNS) with the multilevel refinement strategy for periodic routing problems. The underlying VNS was recently proposed and performs already well on these problems. We apply a path based coarsening scheme by building fixed (route) segments of customers accounting for the periodicity. Starting at the coarsest level the problem...

The main objective of this study is to identify market segment for beach tourism products and services for promoting Cox’s Bazar Beach as a tourist destination. The study is based on primary as well as secondary data and sample size was about 308. Result shows a clear distinction between a male, older group of tourists and newly married couple, younger age and married with children depending on...

A Variable Neighbourhood Search algorithm that employs new neighbourhoods is proposed for solving a task allocation problem whose main characteristics are: (i) each task requires a certain amount of resources and each processor has a capacity constraint which limits the total resource of the tasks that are assigned to it; (ii) the cost of solution includes fixed costs when using processors, tas...

The Rohingya people are one of the most ill-treated and persecuted refugee groups in the world, having lived in a realm of statelessness for over six generations, and who are still doing so. In recent years, more than 500,000 Rohingyas fled from Myanmar (Burma) to neighboring countries. This article addresses the Rohingya refugee crisis in Bangladesh, with special emphasis on the living conditi...

In a previous work the authors introduced a non{interior predictor-corrector path following algorithm for the monotone linear complementarity problem. The method uses Chen{Harker{Kanzow{Smale smoothing techniques to track the central path and employs a reened notion for the neighborhood of the central path to obtain the boundedness of the iterates under the assumption of monotonicity and the ex...

I. FORMALIZATION OF PHYSICAL LAYER NEIGHBORHOOD LIST EXCHANGE In our project, we introduce a cross layer approach to secure multi-path routing in wireless mobile ad-hoc networks. Neighborhood information is collected at the physical layer to facilitate the security estimation in higher layer. The protocol for physical layer neighborhood list exchange is described by specifying a program for eac...

The study of benthic macroinvertebrate communities is one of the most common methods for assessing the effects of stresses on the biological conditions of aquatic ecosystems and water quality monitoring. This research was conducted to study the changes in the macroinvertebrate communities in the Shanbeh-Bazar River, Anzali International wetland and the effects of environmental factors. Sampling...

In the adaptive step primal dual interior point method for linear programming polynomial algorithms are obtained by computing Newton directions towards targets on the central path and restricting the iterates to a neighborhood of this central path In this paper the adaptive step methodology is extended by considering targets in a certain central region which contains the usual central path and ...