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Wireless sensor networks consist of a large number of small, low-power sensors that communicate through wireless links. Wireless sensor networks for healthcare have emerged in recent years as a result of the need to collect data about patients' physical, physiological, and vital signs in the spaces ranging from personal to hospital and availability of the(More)
In this paper we present a novel congestion control scheme based on fuzzy logic systems for a wireless sensor network (WSN). In sensor networks existence of malicious nodes is undeniable. These nodes aggravate congestion problem by diffusing useless packets. In our approach using in-network fuzzy based processing, each node monitors the behavior of its(More)
One of the most important challenges in a densely wireless sensor network (WSN) with potential congestions and packet loss is dissemination of distrusted packets. In this paper we present FCCTF: Fairness Congestion Control for a disTrustful WSN using Fuzzy logic. FCCTF increases each node capability for detecting and isolating malicious nodes in order to(More)
In multiprocessor systems, an efficient scheduling of a parallel program onto the processors that minimizes the entire execution time is vital for achieving a high performance. This scheduling problem is known to be NP- Complete. The objective is minimization of scheduling length, i.e. we want the final job to be completed as early as possible. In this(More)
In general, distributed flexible manufacturing systems (FMS) scheduling problems are more complicated than the classical FMS scheduling, because it has to focus on two different issues: first, allocation of jobs to suitable factories and second, determination of the corresponding production scheduling in each factory. On the other hand in distributed FMS(More)
Ensuring quality of services and reducing the blocking probability is one of the important cases in the environment of grid computing. In this paper, we present a deadline aware algorithm to give solution to ensuring the end-to-end QoS and improvement of the efficiency of grid resources. Investigating requests as a group in the start of time slot and trying(More)
The goal of grid computing is to aggregate the power of widely distributed resources. Considering that the probability of failure is great in such systems, fault tolerance has become a crucial area in computational grid. In this paper, we propose a new strategy named RFOH for fault tolerant job scheduling in computational grid. This strategy maintains the(More)
In recent years, grid technology has had such a fast growth that it has been used in many scientific experiments and research centers. A large number of storage elements and computational resources are combined to generate a grid which gives us shared access to extra computing power. In particular, data grid deals with data intensive applications and(More)
Task scheduling is essential for the suitable operation of multiprocessor systems. The aim of task scheduling is to determine an assignment of tasks to processors for shortening the length of schedules. The problem of task scheduling on multiprocessor systems is known to be NP-complete in general. Solving this problem using by conventional techniques needs(More)
An ad hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration. A number of routing protocols have been implemented to route the packets in these networks. One of these routing protocols is Destination-Sequenced Distance-Vector (DSDV),(More)