reliability evaluation of a large-scale composite power system faces to numerous events/outage and consequently imposes an extensive burden of calculations. in order to simplify the problem, determination of an equivalent system for large-scale power system is inevitable. this paper proposes a framework as reduction technique to separate a composite power system to three areas: external area, o...

objectives: there are various developmental screening tools that are different in terms of psychometric characteristics and choosing the best one is challenging for the pediatrician. this research was designed to identify the validity and reliability of parents evaluation of developmental status, a developmental screening questionnaire, in 4-60 months-old children in the city of tehran. methods...

introduction. measuring is the foundation of evaluation. the main way for evaluation of education progression is testing the exams and every test must have identity, validity, reliability and be easy to perform. more precision to preparing the exams can improve its validity. there are different ways for measuring validity and reliability in testing. do the faculty members know about these metho...

generally, the failure rate and the repair time of system components are constant parameters in reliability assessment of electric distribution systems. a failure of component is resulted from failing in the operation or overloading. in addition, there exist cases where, the repair times of components are small and tolerable from customer point of view. thus, tolerable repair times may be overl...

The English teaching quality evaluation model based on the DS-SVM is put forward aimed at the defect of scientific nature and low reliability of the evaluation results of current English teaching quality. First of all, from the perspective of information integration, construct the evaluation index system and adopt SAM to establish the evaluation models of English teaching quality in view of the...

background: despite progression of knowledge of nursing researcher about importance of psychometric principles of instruments of studies but it seems that this subject is not used correctly in nursing studies. this study is designed to critically assess the validity and reliability of instruments applied in studies published in iranian nursing journals methods: this study is a critical review o...

The purpose of this study was to determine the intrarater and interrater reliability of a clinical evaluation system for scapular dysfunction. No commonly accepted terminology presently exists for describing the abnormal dynamic scapular movement patterns that are commonly associated with shoulder injury. A method of observation was devised for clinical evaluation of scapular dysfunction. Blind...

To address the issue of reliability evaluation in dynamic grid environment, a workload-aware reliability evaluation model is proposed, in which queuing system is applied to describe the dynamic workload and working of grid resources. Meanwhile, a new type of resource fault, namely Deadline-Miss fault, is introduced to evaluate the reliability of real-time jobs. The validity of the proposed mode...

With the increasing scale of grid systems, reliability evaluation for both grid systems and applications become more and more challenging, especially when taking the heterogeneity and dynamical workload into consideration. In this work, a workload-aware reliability evaluation model is proposed, in which queuing system is applied to describe the dynamic workload and working of grid resources. To...