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Linking Models and Experiments

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System size effects on gyrokinetic turbulence

Laurent Villard, Alberto Bottino, Sébastien Jolliet, Ben McMillan, Xavier Lapillonne

The scaling of turbulence-driven heat transport with system size in magnetically confined plasmas is reexamined using first-principles based numerical simulations. Two very different numerical methods are applied to this problem, in order to resolve a long ...

The American Physical Society2010

A Wireless Soil Moisture Smart Sensor Web Using Physics-Based Optimal Control: Concept and Initial Demonstrations

David Shuman, Ke Li, Aditya Mahajan

This paper introduces a new concept for a smart wireless sensor web technology for optimal measurements of surface-to-depth profiles of soil moisture using in-situ sensors. The objective of the technology, supported by the NASA Earth Science Technology Off ...

2010

Open Innovation as an Option for Reacting to Reform and Crisis: What Factors Influence the Adoption of Open Innovation?

Matthias Finger

In times of reform and crisis, innovation is central for adapting to change. Many companies currently adopt open innovation models in an effort to increase their innovativeness. However, not all companies practice identical modes of open innovation and the ...

2009

Symbolic quality control for multimedia applications

Joseph Sifakis

We present a fine grain quality control method for multimedia applications. The method takes as input an application software composed of actions. The execution times of actions are unknown increasing functions of quality level parameters. The method allow ...

2008

Using speed diagrams for symbolic quality management

Joseph Sifakis

We present a quality management method for multimedia applications. The method takes as input an application software composed of actions. The execution times of actions are unknown increasing functions of quality level parameters. The method allows the co ...

2007

Finite element approximation of multi-scale elliptic problems using patches of elements

Jacques Rappaz

In this paper we present a method for the numerical solution of elliptic problems with multi-scale data using multiple levels of not necessarily nested grids. The method consists in calculating successive corrections to the solution in patches whose discre ...

Springer-Verlag2005

Situation-based modeling framework for enterprise architecture

Pavel Balabko

This thesis presents the Situation-Based Modeling Framework for Enterprise Architecture. This framework improves system modeling by making models more systemic and, therefore, making reasoning about these models easier. The context of this thesis is Enterp ...

EPFL2005

Foundations of systems and properties

Otto Preiss

Engineering of software-intensive systems is concerned with the creation and evolution of systems that shall exhibit desired properties in their execution as well as development environment. In this context, the motivation of this thesis, derived from curr ...

EPFL2004

A Systems Perspective on the Quality Description of Software Components

Alain Wegmann, Otto Preiss

In this paper we present our rational for proposing a conceptual model for the description of quality attributes of software artifacts, in particular suited to software components. The scientific foundations for our quality description model are derived fr ...

2003

Efficient simplification of point-sampled surfaces

Mark Pauly

In this paper we introduce, analyze and quantitatively compare a number of surface simplification methods for point-sampled geometry. We have implemented incremental and hierarchical clustering, iterative simplification, and particle simulation algorithms ...

2002