Simulation tools play a fundamental role on the development of Grid middlewares since they provide a controllable and low cost environment for validating new concepts and implementations that address aspects such as heterogeneity, scalability, security and the dynamism of Grid environ-

This paper describes Nest, a testbed which provides a simulated network environment for developing and analyzing distributed systems and algorithms. Nest has a number of interesting features, including a transparent implementation of lightweight processes under UNIX, and a distributed monitoring facility with a graphical user interface.

The paper introduces a new tool for programmed discrete event simulation in Matlab. As Matlab’s language became one of the most frequently taught languages for computations in mathematics, statistics, and operations research, we need a simple to use and fast to learn tool for creation of simple and mediumscale simulation models. Moreover we need a tool where the code is clearly visible and wher...

....................................................................................................................... i Dedication ..................................................................................................................... i Acknowledgements ...................................................................................................... ii

The document presents BlueSim network simulation tool for scatternet formation.

In this paper we present DYANA, an HLA-based hardware-in-the-loop simulation tool. This tool is used for distributed Real-Time Embedded Systems (RTES) simulation. RTES models are described by Unified Modeling Language (UML) statechart diagrams. The statechart diagram is transformed into HLA-based Simulation Model (HSM). After translation into HSM we use CERTI as the simulation runtime. The stat...

In the nineties, more and more attention was raised for process oriented analysis of the performance of companies. Nowadays, many process aware information systems are implemented (e.g., workflow management systems) and business processes are evaluated and redesigned. The discipline related to this field of study is called Business Process Management (BPM). An important part of the evaluation o...

An 'active façade' responds to (and anticipates on) changing indoor and outdoor conditions. To assess the potential of such a façade for minimising energy consumption and improving indoor comfort, a simplified building simulation model has been developed, that combines the simplicity and understanding of easy to use programs with the flexibility and possibilities of advanced programs. To valida...

Simulation can be a difficult subject to teach, as most commercial software requires learning new approaches and time is limited, particularly in business overview courses. Spreadsheets have a distinct advantage in that most students developed a high level of expertise prior to taking management science courses. As such, they provide an ideal platform on which to learn the basics of simulation ...

This paper presents NESSY (NEtwork Simulation SYstem): a whole environment for performance evaluation of communication networks. The modeling methodology proposed by NESSY is mainly based upon the OO (ObjectOriented) techniques and the FDT (Formal Description Technique). With OO approach the network model is a collection of objects. FDT is used to describe the objects that model the network com...