in Supply Chains: A Review June 2004 This article surveys published research on a class of supply-chain management problems we call Joint Transportation-and-Inventory Problems (JTIPs). These problems are characterized by the presence of both transportation and inventory considerations, either as policy-variables or constraints. We define the general JTIP and classify 49 contemporary JTIP papers...

This chapter provides an introduction to urban simulation, which we interpret broadly to mean operational models that attempt to represent dynamic processes and interactions of urban development and transportation. Its intent is to provide the reader with a reasonable understanding of the context and objectives for urban simulation modelling within metropolitan areas in the United States, the l...

This report evaluates criticism of rail transit systems. It examines claims that rail transit is ineffective at increasing public transit ridership and improving transportation system performance, that rail transit investments are not cost effective, and that transit is an outdated form of transportation. It finds that critics often misrepresent issues and use biased and inaccurate analysis. Th...

the bus system in a high-speed public transportation systems are equipped with modern technology that due to accuracy, speed and flexibility have been considered as one of the improvement solutions in tehran's public transport system. in this article the performance of brt line three of tehran has been evaluated based on the established standard in 2013, developed by the institute for deve...

this paper deals with an i * corresponding author email address:   nventory system with one central warehouse and a number of identical retailers. we consider perishable-on-the-shelf items; that is, all items have a fixed shelf life and start to age on their arrival at the retailers. each retailer faces poisson demand and employs (1, t) inventory policy. although demand n...

The Shortest Path with Alternatives (SPA) policy differs from classical shortest path routing in the following way: instead of providing an exact list of means of transportation to follow, this policy gives such a list for each stop, and the traveler is supposed to pick the first option from this list when waiting at some stop. First, we show that an optimal policy of this type can be computed ...

The legal regulatory regimes for communication technologies evolve with technological, economic, and social change. In the United States, the evolution of the legal regulatory regime for the telecommunications sector is following a trajectory breathtakingly similar to that already traversed by the transportation sector. As both sectors provide infrastructures essential to the nation and share s...

INTRODUCTION Attributes of the built environment can influence active transportation, including use of public transportation. However, the relationship between perceptions of the built environment and use of public transportation deserves further attention. The objectives of this study were 1) to assess the relationship between personal characteristics and public transportation use with meeting...

Various policy instruments along with increasing oil prices have contributed to a sixfold increase in global biofuels production over the last decade (2000-2010). This rapid growth has proved controversial, however, and has raised concerns over potential conflicts with global food security and climate change mitigation. To address these concerns, policy support is now focused on advanced or sec...

The objective of this paper is to study an integrated two-supplier supply chain whose suppliers are unreliable. An unreliable supplier is alternative between available (ON) and unavailable (OFF) states which are considered to be independent exponential variables. The suppliers apply a continuous review policy and the retailer uses an adapted continuous review base on an(R,Q) policy. Transportat...