...................................................................................................................................... i Acknowledgement ..................................................................................................................... ii

In the field of wireless communication, Energy efficiency is very important because of the expectation with wireless links to meet the increasing QoS demand. This results in increase of device power consumption. So we present an energy efficient scheduling using water filling algorithm with OFDMA technique for multiuser. Subcarrier allocation for a multiple access OFDM system is found out by th...

In this work we deploy a mechanism design approach for allocating a divisible commodity (electricity in our example) among consumers. We consider to have an energy availability function and for each consumer an associated personal valuation function of the energy resource during a certain time interval. We aim to select the optimal consumption profile for every user avoiding consumption peaks w...

In this paper we study a cost allocation problem that is inherent to most energy networks: the allocation of losses. In particular, we study how to allocate gas losses between haulers in gas transmission networks. We discuss four allocation rules, two of them have already been in place in real networks and two others that are defined for the first time in this paper. We then present a comparati...

The need for more throughput in wireless cellular networks has been increasing in recent years. It has led to an increase in operational costs due to higher energy use as operators deploy more cell sites or increase transmission power at existing ones to satisfy demand. Energy costs are a major expense, and reducing them is a priority. This article presents a scheduler which aims to solve the p...

Changes in our electricity supply chain are causing a paradigm shift from centralized control towards decentralized energy management. Within the framework of decentralized energy management, devices that offer flexibility in their load profile play an important role. These devices schedule their flexible load profile based on steering signals received from centralized controllers. The problem ...

Battery-powered wireless systems running media applications have tight constraints on energy, CPU, and network capacity, and therefore require the careful allocation of these limited resources to maximize the system’s performance while avoiding resource overruns. Usually, resource-allocation problems are solved using standard knapsack-solving techniques. However, when allocating conservable res...

All organisms face the problem of how to fuel ontogenetic growth. We present a model, empirically grounded in data from birds and mammals, that correctly predicts how growing animals allocate food energy between synthesis of new biomass and maintenance of existing biomass. Previous energy budget models have typically had their bases in rates of either food consumption or metabolic energy expend...

Ephemeral adults must be structurally prepared to produce a certain number of progeny, because time of reproduction is not a maneuverable factor. Since structures are more visible than fecundity, reproductive strategies may be more easily studied and interpreted. A study of 10 species of parasitic wasps (Hymenoptera: Ichneumonidae), with ephemeral adults (longevity 13-31 days with only one or t...

SYNOPSIS. During lactation, mothers require energy to meet both maternal and offspring requirements. If a mother exports too much energy to dependent offspring (in milk), her weight loss may be excessive and maternal risk may increase. Conversely, too little energy allocation to offspring may reduce the growth rate or induce mortality of dependent offspring. This paradigm was evaluated in cotto...