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Phase-shifting reactor (PSR) can be used to solve the harmonic problems caused by rectifiers. In this paper, according to the active power balance principle, the relationships among DC current of load, currents of power supply side, as well as capacity of core limb are built, and the design specifications of winding and core are obtained. simulation of 6-phase rectifier system with PSR by the equivalent...
In crowdsourced testing, it is beneficial to automatically classify the test reports that actually reveal a fault – a true fault, from the large number of test reports submitted by crowd workers. Most of the existing approaches toward this task simply leverage historical data to train a machine learning classifier and classify the new incoming reports. However, our observation on real industrial data...
In crowdsourced testing, an important task is to identify the test reports that actually reveal fault — true fault, from the large number of test reports submitted by crowd workers. Most existing approaches towards this problem utilized supervised machine learning techniques, which often require users to manually label a large amount of training data. Such process is time-consuming and labor-intensive...
To improve software reliability, many rule-based techniques have been proposed to infer programming rules and detect violations of these rules as bugs. These rule-based approaches often rely on the highly frequent appearances of certain patterns in a project to infer rules. It is known that if a pattern does not appear frequently enough, rules are not learned, thus missing many bugs. In this paper,...
Context: Software source code is frequently changed for fixing revealed bugs. These bug-fixing changes might introduce unintended system behaviors, which are inconsistent with scenarios of existing regression test cases, and consequently break regression testing. For validating the quality of changes, regression testing is a required process before submitting changes during the development of software...
In the field of intelligent home, when using Zigbee technology to network the management of air-conditioner control device, it is very necessary to reduce the power consumption of battery-powered devices in the network. Through the research of Battery-powered equipment composed by the CC2530 and MSP430, we provide a practical way to extend the working hours of the equipment, to reduce the power consumption...
The competitive environment and changing business processes propose new requirements to ERP system's flexibility and its evaluation becomes the first and critical step to solve these problems. This paper begins with the analysis of flexibility's definition.Basing on the core idea of three-tier software architecture, the author refines the index system from the aspects of presentation flexibility,...
According to the fragile watermarking theory and insecure computer network, the integrity authentication scheme of biometric image based on singular value decomposition (SVD) is proposed for remote users via insecure computer network. We make good use of singular values of singular value decomposition (SVD) of biometric image to check the integrity of biometric image. To make authentication data,...
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