Due to the interconnection and active management of Distributed Generation (DG) and Energy Storage Systems (ESSs), the traditional electrical distribution network has become an Active Distribution Network (ADN), posing challenges to the operation optimization of the network. The power supply and storage capacity indexes of a Local Autonomy Control Region (LACR), which consists of DGs, ESSs and ...

We examine algorithms for creating indexes into ordered series of instructional lecture video transcripts. The goal is for students and industry practitioners to use the indexes towards review or reference. Lecture videos differ from oftenexamined document collections such as newspaper articles in that the transcript ordering generally reflects pedagogical intent. One challenge is therefore to ...

To aim at 3-vote-2 voting system which had already been widely applied in modern railway signal system, based on Markov model the paper analyzed its security and reliability indexes respectively under the three operating modes. During modeling some significant factors, such as common-cause failure, coverage rate of diagnostic systems, online maintainability, periodic inspection, and diverse fai...

In this study, a magnetic flux leakage (MFL) method, known to be a suitable non-destructive evaluation (NDE) method for continuum ferromagnetic structures, was used to detect local damage when inspecting steel wire ropes. To demonstrate the proposed damage detection method through experiments, a multi-channel MFL sensor head was fabricated using a Hall sensor array and magnetic yokes to adapt t...

This paper introduces a Markov model for a multi-state repairable system in which some states are changeable in the sense that whether those states are up or down depends on the recent system evolution history. Several reliability indexes, such as availability, mean up time, steady-state reliability, are calculated using the matrix method. A sufficient condition under which the availabilities o...

The aim of the present study was to evaluate the reliability of a new sleep questionnaire (sHUNT-Q) used in the Nord Trøndelag Health Study 3 (HUNT 3) performed between 2006 and 2008. Six of nine items were modified from a Norwegian version of the Karolinska Sleep questionnaire (KSQ). Overall, 50,839 (54%) out of 94,194 invited participated in HUNT 3. In a randomly selected group of participant...