Lifelines are networks extending spatiallyover large areas. Transportation systems, pipelines,communication and power transmission systems areexamples of lifelines. The performance of a lifelineafter a major earthquake is particularly vital for acommunity because of the emergency services that...

In this paper a method for optimal placement of isolation valves in water distribution systems is presented. These valves serve to isolate parts of the network (segments) containing one or more pipes on which maintenance work can be performed without disrupting service in the entire network or...

In this paper, two procedures for assessing water demand shortfalls following segment isolation are compared. The first (topological) procedure is based on a simple topological network analysis, and identifies the water demand shortfall as the water demand (under normal operational conditions)...

Concern continues to grow over unreliable water access at the household level in many developing countries. A contingent valuation survey was designed to elicit willingness-to-pay for safe and reliable drinking water in León, Nicaragua. In addition, split-sample treatments were used to...

Consider a sequence of binary (success–failure) random variables (RVs) ordered on a line. The number of strings with a constrained number of consecutive failures between two subsequent successes is studied under an overlapping enumeration scheme. The respective waiting time is examined as...

We consider Markov Modulated Bernoulli Processes (MMBP) where the success probability of a Bernoulli process evolves over time according to a Markov chain. The MMBP is applied in reliability modeling where systems and components function in a randomly changing environment. Some of these...

This paper proposes a performance index to evaluate the capability of a maintainable computer network (MCN) that is required to send d units of data from the source to the sink through two paths within time T. The proposed system reliability performance index quantifies the probability that a...

Together with rapidly developing technology, nowadays, plenty of complex systems have emerged and some algorithms for reliabilities of these systems have been developed. System analysts have realized that one of the factors which affects the system reliability is importance of the components...

Together with rapidly developing technology, nowadays, plenty of complex systems have emerged and some algorithms for reliabilities of these systems have been developed. System analysts have realized that one of the factors which affects the system reliability is importance of the components...