نتایج جستجو برای: direct and non
تعداد نتایج: 17052372 فیلتر نتایج به سال:
This paper presents a comparative study on the Predictive Direct Torque Control method and the Indirect Space Vector Modulation Direct Torque Control method for a Doubly-Fed Induction Machine (DFIM) which its rotor is fed by an Indirect Matrix Converter (IMC). In Conventional DTC technique, good transient and steady-state performances are achieved but it presents a non constant switching fr...
Abstract Introduction: Classifying the average nursing care time is an independent measure for regulate the quantity and quality of the nursing staff in hospitals because, it allows hospitals to evaluate the condition of the existing human resources. This study aimed to identify direct and indirect nursing care time in a medical and surgical ward. Methods: In this cross - sectional study ...
introduction: the restoration of endodontically treated teeth is a topic that has been studied extensively but it is still a challenge for dental practitioners. the aim of this study was to evaluate fracture resistance, fracture patterns and fracture location of endodontically treated human maxillary premolars restored with direct and indirect composite resin and ceramic restoration. methods: e...
Introduction: As a healthcare providing establishment, hospitals can be affected by sources of noise pollution which then impose negative effects on the health and comfort of patients and personnel. The present study was conducted to determine the relationship between sound annoyance and general health in the personnel of university affiliated and non-university affiliated hospitals in Shi...
in this paper we introduce the concept of generalized baer-invariant of a pair of groups with respect to two varieties ? and ? of groups. we give some inequalities for the generalized baer-invariant of a pair of finite groups, when ? is considered to be the schur-baer variety. further, we present a sufficient condition under which the order of the generalized baer-invariant of a pair of finite ...
abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...
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