content discovery is one of the fundamental issues that determines the architecture and performance of content distribution networks based on peer-to-peer (p2p) networks. to administrate the costs and discoveries, peers of a p2p network communicate with each other by one or more overlay layers. the condition of node’s relations in overlay networks, have a great impact in efficiency of networks....

In WCDMA networks, most economic-based resource management algorithms only assumed that network users were obedient, that is, users only accepted the price declared by network, which is called as price acceptation mechanism. Many research issues argued that it is necessary to accommodate, if possible, to use self-interest behaviours of users to strengthen the technical architecture of network e...

Heat transfer fluids have inherently low thermal conductivity that greatly limits the heat exchange efficiency. While the effectiveness of extending surfaces and redesigning heat exchange equipments to increase the heat transfer rate has reached a limit, many research activities have been carried out attempting to improve the thermal transport properties of the fluids by adding more thermally c...

In today's competitive business environment, operators seek to simplify their network topology in order to cut costs and create a convergent network infrastructure that is secure, easy to manage, always available, and capable of providing bandwidth to new multimedia service traffic loads and changing business needs. This paper gives an overview of broadband networks and how to provision service...

We present in this paper a generic design framework towards the profitable operation of a service overlay network (SON) that aims to assure inter-domain quality of services (QoS). Revealing some involved NP-hard topological design tasks, we work out efficient heuristic methods for the practical implementation of the proposed framework. The efficiency of the developed heuristic methods is tested...

A large body of theoretical work has explored the channels through which vertical contracts can induce efficiency improvements. However, it is also important to study vertical contracts empirically in order to gain insight into the relative size of different types of efficiency gains. In this paper, I empirically analyse a contractual innovation in the vertically separated video rental industry...

Data Envelopment Analysis (DEA) is one of the best methods for measuring the efficiency and productivity of Decision Making Units (DMU). Evaluating the efficiency of DMUs which have two or several stages by using the conventional DEA models, is equal to consider them as black box. This method, omits the effect of intermediate measure on efficiency. Therefore, just the first network inputs and t...

We investigate dynamic policies for allocating scarce inventory to stochastic demand for multiple fare classes, in a network environment so as to maximize total expected revenues. Typical applications include sequential reservations for an airline network, hotel, or car rental service. We propose and analyze a new algorithm based on approximate dynamic programming, both theoretically and comput...