نتایج جستجو برای: primary frequency control
تعداد نتایج: 2294490 فیلتر نتایج به سال:
OBJECTIVES Although it is well known that addiction is associated with adverse medical consequences, the effects of the spectrum of unhealthy drug use (illicit drug or prescription misuse) on chronic conditions such as hypertension and diabetes are understudied. This study evaluated the associations between measures of drug use (ie, frequency, severity and type) and standard quality metrics for...
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...
AbstractObjectives: The aim of this project was to evaluate the frequency of sleep disorders in primary school students in the city of Tehran. Method: In a descriptive cross-sectional study, parents of 692 primary school children completed a questionnaire binding child demographics,family structure, and sleep behaviors. Data were ana- lyzed by descriptive statistical methods, t-test, and c2 t...
In power systems, high renewable energy penetration generally results in conventional synchronous generators being displaced. Hence, the system inertia reduces, thus causing a larger frequency deviation when an imbalance between load and generation occurs, potential instability. The problem associated with this increase system’s dynamic response can be addressed by various means, for example, f...
Abstract: A stand-alone multi-microgrid (MMG) system can be formed by connecting multiple stand-alone microgrids (MGs). In the stand-alone MMG system where the frequencies of each MG system are different, a back-to-back (BTB) converter can be used for interconnecting the adjacent MG system. The frequency control performance of the MMG system can be improved by designing the suitable controller ...
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