This paper presents an application of the exact solution approach for the Vehicle Routing Problem with Soft Time Windows based on the column generation scheme developed earlier by the authors, for evaluating a truck ban scheme from the environmental improvement aspect on a realistic logistics...

City logistics aims globally to optimize logistics systems within an urban area by considering the costs and benefits of schemes to the public and private sectors alike. Private shippers and freight operators aim to reduce their freight costs, while the community attempts to alleviate traffic...

The investment problem in natural gas transmission in a static sense as analyzed by Chenery [Chenery, H. B. 1949. Engineering production functions. Quart. J. Econ. 63(November) 507-531.] and Lehn [Lehn, H. C. 1943. An analysis of gaspipeline economics. Am. Soc. Mech. Engrs. Trans. (July)...

In this paper, a dynamic continuous time model of the firm, encompassing operations and investments, is formulated as an optimal control problem in an activity analysis context. In the model, the objective of the firm is to maximize, subject to various constraints, the discounted value of...