Thomas Wiedemann

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This paper considers advantages and actual problems of web based simulation systems. Based on a review of environments and languages for web based simulation, some fundamental requirements for successful simulations are presented. The goal is to change the technology-driven approach in a more customer oriented philosophy. The common concept of "Application(More)
The paper is divided in a basic introduction and a discussion of new and future methods of optimization and simulation. The introduction discusses actual architec-tures of complex information systems, which include optimization systems or modules. The optimization system is presented as an example for a practical solution of optimization tasks. The second(More)
SLX by Wolverine software is actually one of the fastest simulation languages. Besides the high performance the SLX-compiler can be extended very easily by user specific syntax rules and new basic functions. This "pyramid power" of SLX is used to build a new system for modeling and simulation --- VisualSLX. This system is a shell atop the standard(More)
During the Winter Simulation Conference 2001 the OpenSML-project was presented and started. The OpenSML-project is based on the Simulation Modeling Language (SML™) and is an open source, web-based, multi-language simulation development project guided by a consortium of industrial, academic and government simulation consultants, practitioners and developers.(More)
Remote controlling of road vehicles in complex urban scenarios causes a high workload for human operators which may lead to stop-and-go driving behavior. This paper introduces a novel assistance system to improve the autonomy level of teleoperated driving, keeping human as the main decision maker in all driving tasks. The proposed system detects the(More)
There is no universal standard for discrete simulation. Models, created with leading simulation tools can not be exchanged between the systems. In result, there are very high investments and maintenance costs for simulation studies and some additional problems with portability and performance in large simulation studies. This paper discusses in detail, a(More)
The theory of modeling and simulation is well defined in result of about 30 years of research and practice. There are commonly accepted approaches and methods of working out successful simulation studies (see track "Simulation Basics" in Winter Simulation Conference 1999). The educational aspects of simulation are very complicated: there is no common(More)
When using multiple robotic agents for waypoint-based exploration or coverage tasks, collision avoidance between agents is an important issue. With a centralized planner, this issue arises only at one central instance. However, when using asynchronous and/or decentralized algorithms, decentralized methods for collision avoidance need to be used. We propose(More)