Over the past four decades several computer models have been developed to solve what has come to be known as the space planning problem in architectural design. Although, space planning cannot be defined as an independent problem in the whole architectural design process, the problem is important if considered within the context of the design process itself, i.e. exploring the topological optio...

Considering the number of access network technologies and the investment needed for the “last mile” of a solution, in today’s highly competitive markets, planning tools are crucial for the service providers to optimize the network costs and accelerate the planning process. In this paper, we propose to tackle the problem of planning access networks composed of four technologies/architectures: th...

This research proposes a bi-level model for the mixed network design problem (MNDP). The upper level problem involves redesigning the current road links' directions, expanding their capacity, and determining signal settings at intersections to optimize the reserve capacity of the whole system. The lower level problem is the user equilibrium traffic assignment problem. By proving that the optima...

The hierarchical generalized Voronoi graph (HGVG) is a new roadmap developed for sensor-based exploration in unknown environments. This paper defines the HGVG structure: a robot can plan a path between two locations in its work space or configuration space by simply planning a path onto the HGVG, then along the HGVG, and finally from the HGVG to the goal. Since the bulk of the path planning occ...

In this paper, we deal with a problem of integrating production and maintenance. The integrated problem is a combining problem of two problems largely studied in literature: the problem of determining the cycle of preventive maintenance actions, and the main production planning problem known as multi items capacitated lot sizing problem with shortage cost. Preventive maintenance is carried out ...

Based on evolutionary computation (EC) concepts, we developed an adaptive evolutionary planner/navigator (EP/N) as a novel approach to path planning and navigation. The EP/N is characterized by generality, flexibility, and adaptability. It unifies off-line planning and on-line planning/navigation processes in the same evolutionary algorithm which 1) accommodates different optimization criteria ...

Based on evolutionary computation (EC) concepts, we developed an adaptive Evolutionary Planner/Navigator (EP/N) as a novel approach to path planning and navigation. The EP/N is characterized by generality, exibility, and adaptability. It uni es o -line planning and on-line planning/navigation processes in the same general and exible evolutionary algorithm which (1) accommodates di erent optimiz...