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Course testing has long been regarded by teachers as one of the best means to objectively evaluate whether students have achieved the instructional goal or objective set up by teachers. The purpose of course testing is to help teachers understand the degree to which students have mastered a course. Students' test scores on a course may serve as a referential index whereby teachers can modify their...
At the high temperature state or the applied stress is less than the yield strength, general metal itself will generate slow plastic deformation until fracture, which is called creep rupture. Under room temperature, general alloy will have creep phenomenon, but it is not obvious. However, under high temperature environment, the creep rupture becomes very important. It is not only very important to...
With the human being's advances in technology and business economic growth, the consumption of material grows rapidly, and cause many environmental problems. If we can understand the importance of resource recycling, then, it can leave a clean space for future generations. Hence, the paper uses significant to analyze the weightings, and use reduct to calculate the frequency of influence factor, then,...
The project risk assessment is an important basis for construction enterprises to select the bidding project and make decisions during the bidding phase. In this paper, based on the thoughts of idealization and the combination of objective and subjective ideals, the project risk assessment model of Rough set-TOPSIS is proposed. Firstly, adopting Rough set theory, the objective weight of each index...
Phenolic amide compounds are present in natural products. They are confirmed to possess very excellent antioxidant activities in previous literature. Therefore, the present study was focused on the synthesis of a series of phenolic amide compounds and the determination of their antioxidant activities. Each parameter between the functional group in the structure and the activity was investigated. Such...
The tornado speed is estimated according to its path length and width, but sometimes from the information detected by the Dopper radar, we found that the path length and the width of the tornado did not have intersection in wind speed ranks. Although the forecast of the wind speed rank is accurate, the wind speed may change owing to other unknown factors. Because it, these information is rough from...
In power system filed, to study the characteristics of the gas breakdown is essential and of importance in designing the protection of high voltage system as well as to the power system reliability. Hence, in this paper, the major purpose is to propose a refined mathematical approach based on rough set methods to find the priority of influence factor in gas breakdown. And also created rough set toolbox...
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