In urban areas, congestion creates a substantial variation in travel speeds during peak morning and evening hours. This research presents a new solution approach, an iterative route construction and improvement algorithm (IRCI), for the time dependent vehicle routing problem (TDVRP) with hard or soft time windows. Improvements are obtained at a route level; hence the proposed approach does not ...

Vehicle Routing Problem (VRP) is a hot issue in the field of logistics. Furthermore, the Vehicle Routing Problem with Time-Windows (VRPTW) is an additional constraint of the customer access time windows based on the VRP. It becomes a noticeable problem with the development of logistics distribution and the just-intime distribution demand from customers, which increases a visiting window to trad...

In this paper we study the orienteering problem with time windows (OPTW) and the impact of relaxing the time windows on the profit collected by the vehicle. The way of relaxing time windows adopted in the orienteering problem with soft time windows (OPSTW) that we study in this research is a late service relaxation that allows linearly penalized late services to customers. We solve this problem...

The ideal architecture for these new systems is described in an earlier white paper entitled: “A Soft-Control Architecture: Breakthrough in Hard Real-Time Design for Complex Systems.” This white paper presumes a basic understanding of how Soft-Control Architectures can replace FPGA/DSP/PowerPC and proprietary RTOS solutions with a hard-real-time software plug-in for Microsoft Windows to deliver...

In this paper, we describe our experiences in developing real-time computer vision applications for Intel Pentium III based Windows NT workstations. Specifically, we discuss how to optimize your code, efficiently utilize memory and the file system, utilize multiple CPUs, get video input, and benchmark your code. Intrinsic soft real-time features of Windows NT are discussed, as well as hard real...

Because of the dominance of Microsoft® Windows® in the PC market there is a strong interest in using Windows NT® as a platform for real-time process and control systems. This type of solution is very cost effective because applications and development tools are widely available. However, Windows NT was designed as a general purpose operating system and optimizes average not worst case performan...