Mobile ad-hoc networks having no fixed Infrastructure and without any physical connections of mobile devices such as laptop etc. Due to mobility of nodes, interference, multipath propagation and path loss, MANET has no fixed topology. Hence, MANET has to need dynamic routing protocols for these networks to function properly for delivering the data packets from source node to desired destination...

heavy metal toxicity has serious adverse effects on the environment. the metal sequestering characteristics of a novel metal binding peptide (glu-cys) 11 gly+linker+hexahistidine (ec 11 :his 6 ) was investigated to determine if it can absorb cu 2+ or zn 2+ cations. molecular dynamics simulations were carried out using a model of 6 cu 2+ or zn 2+ and other ions enclosed in a fully hydrated simul...

We present an NS-2 module, Physical Channel Access (PCA), to simulate different access methods on a link shared with Multi-Frequency Time Division Multiple Access (MF-TDMA). This technique is widely used in various network technologies, such as satellite communication. In this context, different access methods at the gateway induce different queuing delays and available capacities, which strong...

The purpose of this paper is investigating behaviors of Ad Hoc protocols in Agent-based simulation environments. First we bring brief introduction about agents and Ad Hoc networks. We introduce some agent-based simulation tools like NS-2. Then we focus on two protocols, which are Ad Hoc On-demand Multipath Distance Vector (AODV) and D estination Sequenced Distance Vector (DSDV). At the end, we ...

In this work we present the results of a comparative study between two well-known network simulators: ns-2 and OPNET Modeler. In particular, we focus on a performance evaluation of the IEEE 802.11e technology on Mobile Ad-hoc NETworks (MANETs) in both stationary and mobile scenarios. The paper describes the tested scenarios in detail, and discusses simulation results obtained with OPNET Modeler...

For the evaluation of ad hoc network protocols, researchers traditionally use simulations because they easily allow for a large number of nodes and reproducible environment conditions. But still, simulations are costly in terms of required processing time and memory. New approaches like the Javabased simulator JiST/SWANS promise to provide significant performance advantages compared to existing...

In the last years, the mobile agents paradigm has received significant attention in the research community. This activity has been crystallized in the development of a variety of mobile agent systems and works of normalization which will allow the development of commercial systems. Nevertheless, in this aspect the expected deployment of such systems has still not been achieved. It is argued tha...