نتایج جستجو برای: frequency control
تعداد نتایج: 1748944 فیلتر نتایج به سال:
Les requêtes approximatives (RA) représentent une solution pertinente qui permet d’améliorer le temps de réponse aux dépens de l’exactitude. Celles-ci sont adaptées aux requêtes avec agrégats pour lesquelles la précision au dernier décimal n’est pas exigée. La contribution de ce travail est le calcul en ligne de l’agrégation pour les requêtes flexibles avec groupement d’attributs et jointure en...
Among all the available approaches for software piracy forensics, one existing and exceptional approach is the theoretical frame work called AFC (Abstraction-Filtering-Comparison), an accepted approach in US courts for evaluating copyright infringement claims involving computer software. Through this paper, the authors would like to approach AFC in a threefold manner: One, to discuss the nature...
power transformers are important equipments in power systems. thus there is a large number of researches devoted of power transformers. however, there is still a demand for future investigations, especially in the field of diagnosis of transformer failures. in order to fulfill the demand, the first part reports a study case in which four main types of failures on the active part are investigate...
in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...
this exploratory study aimed to investigate a possible relationship between learners’ beliefs about language learning and one of their personality traits; that is,locus of control (loc). both variables, beliefs and locus of control, are assumed to influence the language learning process. the internal control index (ici) and the beliefs about language learning inventory (balli) were administered...
A covariance condition is shown to be a necessary condition for the existence of a finite control law associated with discrete-time quadratic loss-minimisation problems. Sufficient conditions (including the covariance condition) are then determined which extend the range of optimal-control problems, for which a well defined control law may be calculated. The results may also be applied to solvi...
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