The physical nature of electricity generation and delivery creates special problems for the design of efficient markets, notably the need to manage delivery in real time and the volatile congestion and associated costs that result. Proposals for the operation of the deregulated electricity industry tend towards one of two paradigms: centralized and decentralized. Transmission congestion managem...

Congestion is a wasteful stage of the production process where outputs are reduced due to excessive amount of inputs. There are several approaches in data envelopment analysis (DEA) literatures to treat congestion. The concept of strong and weak congestion first developed by Tone and Sahoo [Tone, K., Sahoo, B.K., 2004. Degree of scale economies and congestion: A unified DEA approach. European J...

We introduce a new class of games, congestion games with failures (CGFs), which extends the class of congestion games to allow for facility failures. In a basic CGF (BCGF) agents share a common set of facilities (service providers), where each service provider (SP) may fail with some known probability. For reliability reasons, an agent may choose a subset of the SPs in order to try and perform ...

In this talk we study the potential function in congestion games. We consider both games with non-decreasing cost functions as well as games with non-increasing utility functions. We show that the value of the potential function Φ(s) of any outcome s of a congestion game approximates the optimum potential value Φ(s *) by a factor Ψ F which only depends on the set of cost/utility functions F, an...

This paper uses analysis and experiments to study the minimal buffering requirements of congestion controlled multimedia applications. Applications in the Internet must use congestion control protocols, which vary transmission rates according to network conditions. To produce a smooth perceptual quality, multimedia applications use buffering and rate adaptations to compensate these rate oscilla...

Since last few decades, electric supply industry is undergoing restructuring all over the world. Restructuring has brought organizational and operational changes by by the virtue of which Electricity has now become a commodity and regulated cost based electric power system is converted into price based liberalized power market. Under this competitive power market environment, number of market p...

In this paper, the authors have proposed Fuzzy Cost Metric based Adaptive (FCMA) routing protocols for WSNs. Residual energy, Congestion level and Connectivity parameters have been used to calculate the fuzzy routing cost in order to decide the forwarding node. The results obtained indicate that the proposed FCMA protocols reduce the energy consumption and latency and increase the lifetime of t...

For the minimum cost multiple-source unsplittable flow problem, we propose a 2-cost and (c+ 2)-congestion approximation algorithm, where c is the number of distinct sources. We also propose some heuristics based on a linear programming relaxation with randomized rounding and a greedy approach, and implement the proposed approximation algorithms and examine the quality of approximation achieved ...

We analyze the benefit of production/service capacity sharing for a set of independent firms. Firms have the choice of either operating their own production/service facilities or investing in a facility that is shared. Facilities are modeled as queueing systems with finite service rates. Firms decide on capacity levels (the service rate) to minimize delay costs and capacity investment costs pos...