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SARFOS - Search And Rescue Forward Operation Support System

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Predictive Approach for Database Schema Evolution

Hassina Bounif

Information systems, including their core databases need to meet changing user requirements and adhere to evolving business strategies. Traditional database evolution techniques focus on reacting to change to smoothly perform schema evolution operations an ...

Idea Group2006

Creativity and the Age-Old Resistance to Change Problem in RE

Gil Regev, Alain Wegmann

Creativity is about bringing unforeseen change to habitual ways of doing things. Understanding the challenges of introducing innovation in organizations is, therefore, essential during the requirements phase of today’s computer systems design projects. How ...

IEEE2006

SEAM in Business: A Systemic Method for Understanding Stakeholders’ Needs in Value Networks

Alain Wegmann

Understanding stakeholders’ needs is necessary to design requirements for organizations and IT systems. We present a systemic modeling method to identify and categorize stakeholders within value networks, to analyze the relationships between these value ne ...

2006

Cherry Picking: A Semantic Query Processing Strategy for the Evaluation of Expensive Predicates

A common requirement of many scienti c applications is the ability to process queries involving expensive predicates corresponding to user programs. Optimizing such queries is hard because static cost predictions and statistical estimates are not applicabl ...

2005

Characterization of microcapsules

Jutta Christine Wandrey, David Hunkeler

A review on the methods of characterization of multicomponent microcapsules. Requirements to measure the ingress and egress of small and macromols. through the membrane are discussed, along with the relevant theory. The relevant factors to consider in micr ...

2004

Role Composition in Requirements Engineering:the Method and Prototyping Tool

Alain Wegmann, Gleb Skobeltsyn, Pavel Balabko

Using multiple contexts improves model understandability and contributes to solving a scalability problem. In our work, we introduce a modeling method called Systemic Enterprise Architecture Methodology (SEAM) that considers systems to be designed in diffe ...

2004

Flexure pivot for aerospace mechanisms

Simon Nessim Henein

A generic high precision flexible pivot dedicated to pointing and scanning space mechanisms is described. Typical applications are payload scientific instruments and inter-satellite communication systems. The work started with a comprehensive analysis of t ...

2003

A Systemic Paradigm for Early IT System Requirements Based on Regulation Principles: The Lightswitch Approach

Gil Regev

IT system is a general term for all software based business applications used in enterprises. IT systems support the actions of an enterprise by processing information about the enterprise and its environment and by providing this information to the enterp ...

2003

A systemic paradigm for early IT system requirements based on regulation principles

Gil Regev

EPFL2003

Microstereolithography: Concepts and applications

Philippe Renaud, Arnaud Bertsch

Microstereolithography is a new microfabrication process that evolved from the rapid prototyping industry. The first developments in this technology started in 1993 and different research teams around the world have developed microstereolithography machine ...

2001