Personal Communication Network (PCN) is an emerging wireless network that promises many new services for the telecommunication industry. The high speed backbone network (ATM or WDM) is one possible approach to provide broadband wireless transmission with PCN's using the ATM switching networks for interconnection of PCN cells. The wireless ATM backbone network design problem is that of allocatin...

Consolidation carriers transport shipments that are small relative to trailer capacity. To be cost-effective, the carrier must consolidate shipments, which requires coordinating their paths in both space and time, i.e., the carrier must solve a Service Network Design problem. Most service network design models rely on discretization of time, i.e., instead of determining the exact time at which ...

The purpose of the paper is to present a step-by-step development of the transportation optimization model with random parameters, network design variables and with pricing. The well-known deterministic linear transportation model with network design 0-1 variables is shortly discussed and it is extended in two separate ways. Firstly, randomness is modeled by so-called here-and-now approach and ...

Public Transit (P. T) is very important means to reduce traffic congestions, to improve urban environmental conditions and consequently affects people social lives. Planning, designing and management of P. T are the key issues for offering a competitive mode that can compete with the private transportation. These transportation planning, designing and management issues are addressed in the Tran...

In this paper, we consider the problem of network design for hazardous material transportation where the government designates a network, and the carriers choose the routes on the network. We model the problem as a bilevel network flow formulation and analyze the bilevel design problem by comparing it to three other decision scenarios. The bilevel model is difficult to solve and may be ill-pose...

The budget network design problem and fixed-charge network design problem imply different economic pursuits on travel cost and construction cost and structure these two cost components in different ways. A more general version of these two classic formulations is the biobjective network design problem. This article discusses an exact solution strategy for the biobjective discrete network design...

— This study concerns the air route network design problem and more precisely the route and level flight assignment problem, which has already become a key issue owing to the growth of air traffic. A number of related problems appear in the operations research literature, notably vehicle routing, scheduling and other transportation problems. The problem studied in this paper concerns the genera...

Typically, the NDP objective function minimizes the total system travel time (TSTT) subject to the conservation of flow conditions and budget constraint or minimizes the TSTT plus the cost converted to equivalent time unit subject to the conservation of flow conditions. The NDP formulations can be classified according to the following four criteria: (a) system-optimal (SO) or user-optimal (UO) ...

in this paper, a new approach was presented for bus network design which took the effects of three out of four stages of the bus planning process into account. the presented model consisted of three majors steps 1- network design procedure (ndp), 2- frequency determination and assignment procedure (fdap), and 3- network evaluation procedure (nep). genetic algorithm (ga) was utilized to solve th...