A fiber-optical system for measurements of fast high voltage pulses has been developed. The system is based on capacitively coupled Pockels cell voltage sensor and features excellent rejection of electrical interference, large bandwidth and practically unlimited voltage range. The authors describe the principle of operation and give a preliminary discussion of the performance of the measurement sy

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We show how dynamic price mechanisms can be used for decomposition and distributed optimization of control systems. A classical method to deal with optimization constraints is Lagrange relaxation, where dual variables are introduced in the optimization objective. When variables of different subproblems are connected by such constraints, the dual variables can be interpreted as prices in a market

This paper studies the future as “the only field of power, for we can act only on the future” (de Jouvenel 1967:5). As a number of scholars have pointed out (cf. Foucault 1991, Pred 2007) questions of knowledge is integral to political power, and this paper is about the production of knowledge of what can paradoxically not strictly speaking be known – a future space. I focus on how an interplay of

The adaptive resource management framework implemented in the European ACTORS project is presented. A resource manager has been developed that collaborates with a new Linux scheduler providing support for hard constant bandwidth server reservations, in order to adapt applications to changes in resource availability and to adapt the resource allocation to changes in application requirements. The fo

We present the TrueTime Network library for Modelica, developed within the ITEA2 project EUROSYSLIB. It allows for simulation of various network protocols and is intended for use within real-time networking. We describe some its features and discuss implementational issues. Since TrueTime Network is programmed in C, special attention is given to the how Modelica's external function interface is us

The following article reports result from an extensive study with 25 blind users from Italy and Sweden performed during the summer 2001. The tasks reported here test recognition of geometrical objects, recognition of VRML objects, mathematical surfaces an

The legal empowerment approach is a recent attempt to be specific about the role of institutions for the future eradication of poverty. This is a broad concept that includes not only the national formal judicial system in a country, but all formal and informal institutional structures providing the rules of the game of human interaction in any given society. It has invited a lot of debate as to wh