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We present the case study of a complex, mixed-initiative scheduling system to illustrate <i>Work-Centered Design</i> (WCD), a new approach for the design of information systems. WCD is based on theory of distributed cognition and extends established user-centered methods with abstract task modeling, using innovative techniques for work ontology and(More)
Carroll and Campbell [2] and Suchman [11] have also argued that software embodies user work processes, but stopped short of examining the profound implications for organizations and businesses. They need to respond to accelerating change in the world by improving their work processes continuously , and in some cases by reengineering them completely. Often(More)
This tutorial presents many of the user interface issues a developer must deal with when developing virtual reality (VR) systems, including virtual body definition and control, choosing interaction devices and techniques, system evaluation criteria, and choosing a development environment. INTRODUCTION This tutorial presents many of the user interface issues(More)
Bony fish swim with a level of agility that is unmatched in human-developed systems. This is due, in part, to the ability of the fish to carefully control hydrodynamic forces through the active modulation of the fins' kinematics and mechanical properties. To better understand how fish produce and control forces, biorobotic models of the bluegill sunfish's(More)
Our objective was to demonstrate how software methods for information systems can function as an integral part of advanced methods for re-engineering and continuously improving business processes. We report the feasibility of version 0.3 of the tools for a User-Centered Development Environment with Distributed Application Services. Our approach was to(More)
Synthetic Aperture Radar (SAR) is a microwave remote sensing sensor, which can be mounted either on spaceborne or airborne systems and allows night and day and all-weather imaging. Use of interferometric SAR systems (which consist of two SAR antennas pointing to the same area from slightly different view angles) allows the generation of Digital Elevation(More)