The aim of this paper is to devise a new reliable dynamic route guidance approach by integrating the A* algorithm, the concept of reliability and an existing route guidance method into a single package. A new purpose-developed software tool, the Imperial College Navigation Software (ICNavS), is presented, so as to implement and demonstrate the new approach on a real road network, using simulate...

With increasing frequency the news media reports that the planet is warming, pollutants are contaminating the environment, energy costs are rising, and precious natural resources are dwindling. These reports are sounding an alarm that we need to change the way we manufacture products so as to minimize the negative impact of industrial operations on the environment, the workforce, and the surrou...

In this paper, we discuss the problem of developing performance-oriented software and the need for methodologies. We then present the EDPEPPS (Environment for Design and Performance Evaluation of Portable Parallel Software) approach to the problem of designing and evaluating high-performance (parallel) applications. The EDPEPPS toolset is based on a rapid prototyping philosophy, where the desig...

Some agent-based models use digital analogs of insect pheromones for coordination. We clarify the position of this family of techniques in the spectrum of modeling tools. Inspired by statistical physics, we consider the nature of “mean-field models.” We show by analysis and simulation that pheromone models are intermediate between classical agent-based models and mean-field models. This positio...

An extension of HTCPNs-based software tool for Internet systems modelling and evaluation has been proposed in the paper. After the extension the tool provides new possibilities for modelling and analysis of dynamic cluster reconfiguration algorithm. Some implementation details of the algorithm has been presented. The algorithm has been preliminary assessed by simulation.

Programming is one of the basic competences in computer science, despite its importance, it is easy to find students with difficulties to understand the concepts required to use this skill. Several researchers report that the impossibility to achieve a quick and effective feedback, is one of the motivators for the problematic scenario. The professor, even when helped by the TAs, is not able to ...

Simulation modellers are major users of software tools. Advances in computing such as collaborative working tools and distributed technologies have created new possibilities for innovation in simulation modelling. Collectively, we address these as Collaborative Support for Simulation Modelling (CSSM). To contribute to CSSM, we consider the problem of whether or not it is possible to support hum...

We present a framework for augmenting early-stage hospital simulation by versioning. The benefits are twofold: On the one hand, we give planners the opportunity to quickly derive alternative models and variations, which is in line with the mindset of early architectural design. On the other hand, the simulation can be combined with the revision history to form a design tool: For each revision, ...

In studying through simulation, choosing an appropriate tool/language would be a difficult task because many of them are available. On the other hand, few research works focus on evaluation of simulation tools/languages and their comparison. This paper makes a couple of evaluations and ranks more than fifty simulation tools that are currently available. The first evaluation and ranking is in th...