In this paper, we examine a multi-period capacity expansion problem for a local access telecommunications network with a tree topology. Capacity expansion is realized through the installation of concentrators at the nodes and cables on the links of the network. Clearly, the installation of concentrators reduces the need for additional cables, and conversely. The goal is to find the least cost a...

Due to exposure to uncertainty created by the deregulation of electricity industries worldwide and the need to respond to climate change via investment in more sustainable technologies, the challenges and opportunities facing power companies have increased over the past decade. Consequently, the electric power sector requires decision support that is more responsive to market conditions, while ...

  Background: Because of the importance of community health and the growing need for health care Health organizations have expanded their scope and with an entrepreneurial approach seeking to upgrade their performance. Knowledge is the most important capital of organizations and key factor in economics. The purpose of this study was to investigate the effect of knowledge management on organizat...

— An optimum single capacity expansion of a deteriorating facility is determined when future demandfor the facility is given by an évolution ofprobability distributions. Several probabilistic détérioration processes are considered and the probability distribution ofafacility's extinction isfound. For practical applications, it is suggested that simulation be used in determining the costs and be...

The combination of uncertain demand and lead times for installing capacity creates the risk of shortage during the lead time, which may have serious consequences for a service provider with dependent customers. This paper analyzes a model of capacity expansion with correlated random demand and a fixed lead time for adding capacity. We develop and prove the form of an optimal policy for expansio...

In classical linear network flow (LNF) problems, a network consists of multiple source and sink nodes, where each node is a sink node or a source node, but not both. Usually, there is only one kind of commodity flow and the goal is to find flow schedules and routes such that all sink nodes’ flow demands are satisfied and the total flow transmission cost is minimized. We develop a capacity expan...

We study a loss system to forecast the demand for capacity based on the forecast demand for service and a specified service level. A little-used property of the Erlang loss formula allows the linear transformation of demand for service into demand for capacity. Next, given the forecast demand for capacity, we approximate a long run optimal capacity expansion policy by optimizing over successive...

This study developed a systematic decision-making process for water supply capacity expansion using the analytic hierarchy process. The decision-making criteria were categorized into environmental, economic, technical and socio-cultural aspects. Capacity expansion of three water resources (Kpong, Weija and Teshie plants) of Accra-Tema Metropolitan Area (Ghana) was studied as a test case. The re...

In this paper, we address a strategic planning problem for a three-stage productiondistribution network. The problem under consideration is a singleitem, multi-supplier, multi-producer and multi-distributor production-distribution network with deterministic demand. The objective is to minimize the costs associated with production, transportation and inventory as well as capacity expansion costs...

System capacity expansion is a strategic decision that firms have to face after the design of the system and during its running. In particular, the sector of hi-tech manufacturing is affected by unpredictable changes of part types and volume demand, which are difficult to formalize and estimate. In fact, it is difficult to forecast births and deaths of products, increasing and decreasing of vol...