This paper investigates the network location problem for single-server facilities that are subject to congestion. In each network edge, customers are uniformly distributed along the edge and their requests for service are assumed to be generated according to a Poisson process. A number of facilities are to be selected from a number of candidate sites and a single server is located at each facil...

Various methods have been used to economically design wastewater and stormwater collection systems. In this article, Discrete Differential Dynamic Programming (DDDP) which is a subsection of dynamic programming (DP) was used. For each pipe network, various alternatives such as depth and slope of pipe laying and various diameters could be considered to satisfy hydraulic and engineering constrain...

Some computer and communication networks requir e the assignment of ce rtain nodes to perf orm specia l, network wide functions such as routing, monitoring etc. The natura l question that arises is which is the best network node to per form the function. This is the essenc e of the location problem. Resear ch in network loca tion problems conc entra ted on static environme nts, wher ea s many p...