Safety and non safety related VANET messages have localized spatial scope and limited time relevance. A MAC protocol must ensure timely delivery of such messages with high reliability over a shared wireless medium. The Vehicles moving on the road form a fluid strait jacketed topology. In this paper, an RSU assisted channel allocation protocol has been proposed to minimize channel allocation tim...

In this paper, we consider the problem of resource allocation in the context of cognitive Satellite Communications (SatCom). In particular, we focus on the cognitive downlink access by Geostationary (GEO) Fixed Satellite Service (FSS) terminals in the band 17.7-19.7 GHz, where the incumbent users are Fixed-Service (FS) microwave links. Assuming a multiple Low Noise Block Converter (LNB) satelli...

Wireless networking is becoming an increasingly important and popular way of providing global information access to users on the move. One of the main challenges for seamless mobility is the availability of simple and robust Channel Allocation algorithm. The radio propagation environment and related handoff challenges are different in cellular structures. A handoff algorithm with fixed paramete...

Adaptive bandwidth allocation is becoming more attractive in wireless communications since it can dynamically upgrade or degrade the allocated bandwidth of ongoing calls to cope with the network resource fluctuation. In this paper, we propose a utility-based adaptive bandwidth allocation scheme for multi-class traffic in wireless networks. Our scheme allocates bandwidth to ongoing calls accordi...

Populations of Allium vineale commonly include individuals with very different allocation patterns to three modes of reproduction: sexual flowers, aerially produced asexual bulbils, and belowground asexual offsets. If selection is currently acting to maintain these different allocation patterns there must be a genetic basis for variation in allocation to these three reproductive modes. In addit...

This paper provides an overview and some theoretical background for my PhD thesis. The thesis is a series of papers that focuses on improving internal and external allocation. The first two papers develop existing benchmarking technics and hereby facilitate a better basis for decision making within a firm. The next four papers consider more stringent mechanisms that aim at efficient external al...

information about chronic obstructive pulmonary diseases (copd)-related health resources allocation in china is very limited. the aim of the study was to explore the distribution of copd-related health resources allocation among different levels public hospitals (phs) in hunan province of central south china.we randomly collected data from 57 public hospitals (phs) at 3 different levels in huna...

Light availability has a profound effect on plant growth and development. One of the ways to study the effects of light intensity on plant growth and development without the confounding problem of photosynthate availability is sucrose injection/supplementation. A greenhouse experiment was conducted to evaluate the effects of light levels (0% and 75% shade) and sucrose injection (distilled water...

The topological network design of general service, finite waiting room, multi-server queueing networks is a complex optimization problem. Series, merge, and split topologies are examined using an approximation method to estimate the performance of these queueing networks and an iterative search methodology to find the optimal buffer allocation within the network. The coefficient of variation is...

In this paper, we have considered a series-parallel system to find out optimum system reliability with an additional entropy objective function. Maximum system reliability of series-parallel system is depending on proper allocation of redundancy component in different stage. The goal of entropy based reliability redundancy allocation problem is to find optimal number of redundancy component in ...