virtual technology can be a useful tool for designing models of healthy urban environments. the resilience and sustainability in any urban environment involves the establishment and maintenance of the health of its citizens. the well-being of youth, the future workforce of every society, is a highly important consideration in the design of cities. cities are only truly sustainable when the work...

The purpose of this research is to enhance the methods used in biomechanical rehabilitation by combining virtual reality, artificial intelligence, motion capture and biofeedback instrumentation. During training, the subject wears 3D glasses, in which virtual tasks (i.e. trajectories) are displayed to him. The subject is then asked to follow the virtual task displayed to him and match his own mo...

methodology for performance-tuning a virtual storage system is discussed. This methodology encompasses Performance measurement , workload characterization, performance evaluation, and planned experimentation. Use of the methodology is illustrated by describing results of a case study involving the IBM Research Division's T S S l 3 6 0 system. The performance objectives of different computer ins...

Infomaster is a virtual information system that allows users to access a variety of heterogeneous, distributed information from multiple perspectives. Infomaster accesses information stored in databases or knowledge bases using Agent Communication Language (ACL), a combination of KQML, KIF, and Ontologies. Facilitators are used decompose, route, and translate requests and assemble, route, and t...

This paper is a practice and experience paper on the use of a low cost optical whole body motion capture system in combination with an ultrasound head tracker and a wide field of view head mounted display (HMD) that enables the user to visually replace his real body with that of a virtual humanoid or alien body. We describe the integration of the low cost Optitrack motion capture system with HA...

The implementation and proficient use of GIS, has become so complicated, that it is growing towards a domain in itself Virtual GIS (VGIS) aims at the use of the “knowledge base” inherent in GIS for automatic interpretation of remotely sensed images. VGIS allows the user to deal with abstracted data, hiding technical information about the database and allowing concentration on the user’s particu...

I would also thank my students that developed a variety of device controllers available in the PRHS framework to improve it's general purpose usability. Finally I would like to thank my wife Sandra, my daughter Lena and my son Paul. Without their support and love, this thesis would have never been finished.

This paper presents a comprehensive virtual simulation model for CNC systems. The Virtual CNC (VCNC) has a modular architecture, allowing a real CNC to be prototyped quickly from standard library functions for feed drive models, feedback devices, axis control laws, and trajectory interpolation. Additional CNC modules can easily be prototyped and integrated to the VCNC by the user. Various appli...

Digital control experiments are important parts of electrical engineering course in modern electrical schools. A virtual digital control experimental system is developed for undergraduates to learn digital control principals and to practice online. Based on the digital control hardware experiment platform, the practical circuit model is developed. And some digital control algorithms are employe...

Virtual endoscopy systems are promising tools for the simplification of daily clinical procedures. In this paper, a conceptual framework for a virtual endoscopy system (VirEn) is proposed, which is intended to be a highly interactive system. Research efforts have concentrated on the generation of an optimal path for the automated navigation of the data set. Extensions to existing thinning algor...