the aim of this paper is to present an efficient method for a rail freight car fleet sizing problem. this problem is modeled mathematically as a multi-period, dynamic and multi-objective, in which the rail freight wagons are assumed to be heterogeneous. demands for different wagons and all travel times are assumed deterministic. in order to increase the utilization of the available wagons in th...

This paper considers the design of On-Demand Multimodal Transit Systems (ODMTS) that combine fixed bus/rail routes between transit hubs with on-demand shuttles serve first/last miles to/from hubs. The problem aims at finding a network for to allow set riders travel from their origins destinations, while minimizing sum costs, bus operating and rider times. addresses two gaps in existing tools de...

In this paper, we propose a closed queueing network model for performance analysis of electric vehicle sharing systems with certain number chargers in each neighborhood. Depending on the demand distribution, devise algorithms to compute optimal fleet size and required maximize profit while maintaining quality service. We show that is concave respect at charging point. If more are installed with...

The growth in the short sea shipping sector motivated the development of a methodology used as a decision support tool in which both the parameters regarding the demand of markets and the characteristics of the fleet may be tested and appraised. It is also possible to determine the fleet deployment, establishing its routes and scales in the ports for a particular scenario. The considered method...

Inter-hospital transfers of patients for different elements of care have been increasingly used as a common strategy for providing quality healthcares through sharing limited resources worldwide. In this paper, the authors study the problem of healthcare delivery operations for inter-hospital patient transfers motivated by a real-world case within the South East Local Health Integration Network...

The present paper approaches the development and application of a Discrete Event Simulation (DES) model with a Multiple Criteria Decision Analysis (MCDA) tool for the simulation and sizing of a closed-loop maritime transportation system. This system is responsible for the supply of raw materials, especially iron ore, to a steel plant, and its sizing involves the analysis of the transportation f...