Cost efficiency measures the cost of resource by output production. While conventional cost efficiency models set targets separately for each DMU, There are cases where the Central decision making is seeking the above targets, and at the same tries to obtain the target of Min cost efficiency for the total consumption. in this paper we consider that there is a centralized decision maker (DM). In...

We present a distributed, adaptive resource allocation approach for multiagent systems called ARAMS. ARAMS allows a collection of agents to adaptively allocate CPU resource among themselves to handle dynamic events encountered in a noisy and uncertain environment in real-time manner. Each event encountered may incur a CPU shortage crisis in an agent. ARAMS is aimed to reduce the occurrence and ...

This work is concerned with dynamic resource allocation for multi-tiered, cluster-based web hosting environments. Dynamic resource allocation is reactive, that is, when overloading occurs in one resource pool, servers are moved from another (quieter) pool to meet this demand. Switching servers comes with some overhead, so it is important to weigh up the costs of the switch against possible syst...

background although liver transplantation is the last resort for treating end stage liver diseases, this medical procedure is not available for all needful patients because of inadequate organ supply. therefore, guidelines have been developed by medical experts to regulate the process. some professionals believe that medical criteria are inadequate for organ allocation in all situations and may...

the distribution of extracellular enzyme activities in particle-size fractions of sediments was investigated in a subtropical mangrove ecosystem. five enzymes involved in carbon (c), nitrogen (n), and phosphorus (p) cycling were analyzed in the sand, silt, and clay of sediments. among these fractions, the highest activities of phenol oxidase (pho), β-d glucosidase (glu), and n-acetyl-glucosimin...

distribution and allocation of resources is affected by factors such as values, norms, social stratifications, ideology, information, coercion, political challenges, and even external factors. this finding means that there is always a fundamental tendency to redirect resources toward political goals instead of public interests and development. because the resource structure is strongly influenc...

in this paper, we consider scheduling of project networks under minimization of total weighted resource tardiness penalty costs. in this problem, we assume constrained resources are renewable and limited to very costly machines and tools which are also used in other projects and are not accessible in all periods of time of a project. in other words, there is a dictated ready date as well as a d...

Reactive power management plays an essential role in the secure operation of the power system as an ancillary service. Although in electricity markets, the particular attention is paid to active power, the reactive power also plays an important on total generation costs of electricity. On the other hand, as it is mainly confined to local consumption, to avoid market power and maintain the se...

Cloud computing is a model that provides services through internet to its users. It enables users to put their data and services on the internet and same can access through internet. The most challenging task of cloud computing is resource allocation. In this paper, challenges of cloud computing are addressed in which resource allocation is one of the main challenges. Resource allocation and it...

Abstract: A reactive control strategy integrating time transfer delays is proposed to improve the water-asset management of networked hydrographical systems. The considered systems are characterized by large scale networks where each diffluence is equipped with a control gate and a measurement point. Modelling methods of the networked hydrographical systems with equipped diffluences are present...