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Based on the DEA (Data Envelopment Analysis) traditional model, an improved evaluation model is introduced for the fuzzy index value and fuzzy preference weight information. The improved model is applied in evaluation of automatic testing software programs. Firstly, the subjective index values are transformed into fuzzy numbers. Secondly, the subjective preference weights are constructed as a constrain...
It usually takes a long time or huge amount of test cases to do software reliability demonstration testing (SRDT) on a very high reliability software by conventional methods, which leads to the fact that the conventional SRDT methods cannot be put into use for accurately predicting failure rate of a very high reliability software. By means of importance sampling, for high reliability software systems,...
The high performance of DC motor speed control system is required under some situations, while the speed control system based on the phase-locked loop technology has its unique advantage in the steady speed precision. Based on the common software phase-locked speed control system, the paper designs the improved software phase-locked speed control system of DC motor. The experiment shows that the insulin...
Software production line and Web services are two new hot topics in the field of software engineering and distributed computing. How to integrate the two aspects and to put the combinational services software into distributed, reusable, high efficiency, large-scale production, is a new and exciting challenges. This paper presents a service-oriented software production line integration framework based...
Direct Digital Synthesizer (DDS) based frequency synthesizer is important to the performance of radar. Effective DDS frequency planning is a problem still untouched in DDS design. Traditional software based method in DDS design can only get one frequency point spur performance at each run. A new DDS frequency planning method is proposed in the paper, this method can indicate DDS's output ??clean??...
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