Multi-hop wireless mesh networks (M-WMNs) [Akyildiz, I. F., 2005] are one of the key features of beyond 3G systems because of their flexibility and low-cost deployment. So far, most of existing studies on multi-hop wireless mesh networks have been accomplished based on the IEEE 802.11 ad hoc mode. The IEEE 802.16 working group (WG) specified the IEEE 802.16-2004 standard [IEEE Std. 802.16-2004,...

In this letter, we propose an adaptive transmission method for an OFDMA system supporting both band-AMC and diversity modes in a frame, simultaneously. In the proposed method, users are classified into the two groups preferring the band-AMC mode or the diversity mode based on their channel parameters. Then the BS performs resource allocation to maximize the throughput. It is observed that the p...

This paper proposes a new resource allocation mode based on DEA models and elasticity analysis for a certain kind of resource allocation problems. It takes into account both the relative efficiency and the returns-to-scale of the decision making units. The decision maker can adopt it to comprehensively evaluate the departments’ production capacity and their potential production capacity. At las...

Multi-Mode Resource-Constrained Project Scheduling is an NP-hard optimization problem intensively studied due to its large area of applications. This paper concentrates on the evolutionary approaches to Multi-Mode Resource-Constrained Project Scheduling based on permutation encoded individuals. A new recombination operator is presented and a comparative analysis of several recombination operato...

The resource constrained multi-mode multi-project scheduling problem (RCMMMPSP) is a notoriously difficult combinatorial optimization problem. For a given set of activities, feasible execution mode assignments and execution starting times must be found such that some optimization function, e. g. the makespan, is optimized. When determining an optimal (or at least feasible) assignment of decisio...

This work describes a novel approach towards solving Multimode Resource Constrained Project Scheduling (MRCPS) Problems and an algorithm developed to implement this approach. The algorithm is intended to be used as an alternative to the various genetic algorithms currently being used to solve such problems. Using a deterministic approach that aims to select the optimum modes for execution as ef...

Goal: The issue of resource allocation is a major concern for project engineers in the scheduling process project. Resources over-allocation are often seen practice after project, which makes unhelpful. Modifying an over-allocated schedule very complicated and requires lot effort time. Besides, during resource-constrained projects constructing companies, managers should more than one objective ...

This paper introduces a multi-project problem environment which involves multiple projects with assigned due dates; activities that have alternative resource usage modes; a resource dedication policy that does not allow sharing of resources among projects throughout the planning horizon; and a total budget. Three issues arise when investigating this multi-project environment. First, the total b...