Converter-connected resources, such as electric vehicles and stationary batteries, are being recognized by grid operators contributors to frequency stability. Their fast-response potential makes them ideal candidates provide fast control. In this paper we discuss present evidence on what kind of dynamics a power system experiences when using Initially, method assess balance deriving so called r...

Transport of Bose-Einstein condensates in magnetic microtraps, controllable by external parameters such as wire currents or radio-frequency fields, is studied within the framework of optimal control theory (OCT). We derive from the Gross–Pitaevskii equation the optimality system for the OCT fields that allow to efficiently channel the condensate between given initial and desired states. For a v...

The primary objective of power system operation is to deliver power to its customers meeting strict tolerances on voltage magnitude and frequency. Accordingly, the operation control problems naturally divide into control of voltage magnitudes or the voltage control issues, and the control of system frequency or the frequency control problems. Power system being an interconnected large system sp...

This paper presents a new development in the forensics of software copyright through a juxtaposed comparison between the proven AFC test and the recent POSAR test, the two forensic procedures for establishing software copyright infringement cases. First, the paper separately overviews the 3-stage, linear sequential AFC test and then the 5-phase, cyclic POSAR test (as AFC’s logical extension). T...

Past studies in the IT outsourcing area have examined the management of IT outsourcing relationships from a variety of perspectives. The present paper extends this line of research. In this study, we take a multi-theoretic perspective to explore factors that determine the duration of continuing IT outsourcing relationships between vendor and client firms. Five ex-ante and two expost factors tha...

Résumé. L’analyse formelle de concepts (AFC, Ganter et Wille (1999)) est une méthode pertinente d’extraction de connaissances à partir de données complexes d’expression de gènes (Blachon et al. (2007), Motameny et al. (2008)). Dans ce papier, nous proposons d’extraire des groupes de gènes partageant un comportement similaire montrant des changements “significatifs” à travers divers environnemen...