The aim of Fuzzy transportation is to find the least transportation cost of some commodities through a capacitated network when the supply and demand of nodes and the capacity and cost of edges are represented as fuzzy numbers. Many previous papers [4, 5, 13, 14] have presented arithmetic operations, alpha level and simple ranking by operations. P. Pandian [7, 8] has presented some methods for ...

T availability of relatively cheap small jet aircrafts suggests a new air transportation business: dial-a-flight, an on-demand service in which travelers call a few days in advance to schedule transportation. A successful on-demand air transportation service requires an effective scheduling system to construct minimum-cost pilot and jet itineraries for a set of accepted transportation requests....

This work presents a time–space network flow model for scheduling recurring bulk rail deliveries from suppliers to customers. The objective is to maximize demand satisfied while minimizing waiting times for loading and unloading the bulk commodity. The model uses a variety of information including customer demand, rail network characteristics, loading and unloading hours, and track and station ...

1 Roadways, the links of transportation networks, are susceptible to a variety of degradations. 2 Some degradation patterns are severe; they make the network incapable of meeting origin3 destination (OD) demands. Most others are non-severe; they increase the network operational 4 cost while OD demands remain met. In other words, the network structure is resilient to such 5 degradations. It is i...

Traffic engineering on a given network is the task of determining how traffic commodities must be routed in order to maintain an optimal performance. In this work, we aim to optimize routing by minimizing the number of routing hops, which has a positive impact on the delay provided by the network to traffic commodities, while ensuring some desired survivability guarantees. In [1], we have consi...

A centralized multi-echelon, multi-product supply chain network is presented in a multi-period setting with products that show varying demand against price. An important consideration in such complex supply chains is to maintain system performance at high levels for varying demands that may be sensitive to product price. In order to examine the price-centric behavior of the customers, the conce...

1 Abstract Traditionally, the design of a transportation system has focused on either vehicle design or the network flow, assuming the other as given. However, to define a system level architecture for a transportation system, it is advantageous to expand the system boundary during the design process to include the network routing, the vehicle specifications, and the operations, which couple th...

The autonomous mobility-on-demand (AMoD) system plays an important role in the urban transportation system. charging behavior of AMoD fleet becomes a critical link between and In this paper, we investigate strategic pricing scheme for station operators (CSOs) based on non-cooperative Stackelberg game framework. equilibrium investigates competition among multiple CSOs, explores nexus CSOs operat...