After more than 20 years of extensive study, the policy of pooling lead-time risk by simultaneously splitting replenishment orders among several suppliers continues to attract the attention of researchers. A critical review of the extant literature is conducted. Important and persistent...

In this article, the real-time time-dependent vehicle routing problem with time windows is formulated as a series of mixed integer programming models that account for real-time and time-dependent travel times, as well as for real-time demands in a unified framework. In addition to vehicles...

Unlike traditional retailers, which use inventory speculation for all their merchandise, Internet book retailers selectively use inventory postponement for specific merchandise items to lower their inventory costs. We develop and test hypotheses that describe merchandise determinants of...

This paper disaggregates aircraft operating costs into various cost categories and provides background for an engineering approach used to compute a generalized aircraft trip cost function. Engineering cost values for specific airplane designs were generated for a broad spread of operating...

Cross-docking can reduce inventory in a retail supply chain but in certain situations it can result in more inventory being required in the stores to achieve the same customer service levels. In this paper we develop models to predict the changes in the retailer's system-wide inventory levels as...

This study attempts to optimize a delivery service strategy for Internet shopping by considering time-dependent consumer demand, demand-supply interaction and consumer socioeconomic characteristics. A nonlinear mathematical programming model is formulated for solving the optimal number and...

The analysis of air-passengers' choices of departure airport in multi-airport regions is a crucial component of transportation planning in many large metropolitan areas, and has been the topic of an increasing number of studies over recent years. In this paper, we advance the state of the art of...

In this study, we analyze the container mega-ship viability by considering competitive circumstances. We adopt a non-zero sum two-person game with two specific strategies based on different service network configurations for different ship sizes: hub-and-spoke for mega-ship and multi-port...

This study employs data envelopment analysis (DEA) approach to evaluate the performance of domestic air routes from the perspectives of cost efficiency, cost effectiveness and service effectiveness. A total of 15 routes operated by a Taiwanese domestic airline are examined. Three input...