According to the theory of grey target contribution degree,a method of solving weights is proposed with the formula of solving weights derived.First,the contributing degree of indices and their mean can be solved by means of the theory of contribution degree;secondly,the deviation of weights from the mean of these weights is determined according to the deviation of contributing degree of indices from the mean of contributing degree.Based on this, the formula of solving weights can be derived.In a practical case,the solved weights are compared with those determined by the conventional method.The rationality and utility of the new method have been analyzed and verified.It has been verified that the received results by the same formula with the new weights can be raised in 15.5%.
The new type solid state gyro exports angular rate signals directly.Classical rotation vector attitude algorithms have to integrate angular rate frequently.In this paper,by utilizing the angular rate singals export by rate gyro from the latest and current update periods,a new strapdown attitude algorithm expression is developed and the error of the algorithm under the coning motion is derived too.Simulation results show that,compared to the conventional algorithms,the accuracy of the new algorithm is better and calcuation complexity is moderate.
The magnesium die casting and application of magnesium alloy products lead to significant amount of magnesium scrap. This article discusses sources, classfication and the technology used to retrieve and recycle magnesium scrap. Quality and application of recycling magnesium alloy is also involved.
Based on the analysis of the status of multimedia courseware,this paper discusses how to design appropriate,highly efficient and economical multimedia courseware in order to satisfy the learners' requirements from basic principle,noticing psychology,material preparation in designing multimedia courseware, and illuminates that we should select optimized software in the design of courseware.
In this thesis, the technique that precision of rocket-projectile can be improved with controlling trajectory error has been investigated. At first, to build up controllable trajectory dynamics equation, and to establish control logic of lateral push vector motor ignition. A number of pulse motors are located on the nose of the rocket-projectile, and can provide a set of constant correct forces in order to improve the precision of rocket-projectile. In simulation example contrast, the powered end velocity and wing is considered to obey normal distributing, the result indicates that the circular error probable(CEP) is reduced 11%. The feasibility of the method about lateral push vector motor firing control logic has been proved.
This article begins with the economic essence resulting from the problem of rural education. Firstly, the author analyses the demand on rural education and compares its cost and benefit. Secondly, from the government's angle, he analyses the supply of rural education and the efficiency of the government's funds. Furthermore, based on the analysis, the author gives economic solutions to the problem: reforming the model of rural education and management mechanism, improving the demand and supply of rural education.
The elements which cause and influence the injuring accident in sports teahing in school are various.How to comprehend and then analyse the causes is the prelude of taking some precaution and protection measures properly.Further more,to enhance both teachers and students security consciousness and the law concept and to avoid the injuring accident in sports teaching are the effective ways to assure the regular theahing in school.
Ellipsis expressions are always used in Japanese. Why Japanese people pay more attention to them than other peoples is that these expressions are deeply related to Japanese society, its cultural background and the relationship between people. The paper mainly deals with the subject ellipsis expressions in Japanese. In the meantime, it gives some specialties in Pragmatics and some advice about how to use these expressions to realize the decency in communication.
Through the statistics and analysis of quoted papers in thesis, written by graduated of 2002 and 2003, from the computer, chemical and electrical departments of North China Institute of Technology. The existing problems in thesis are researched by datum. The reason for arise these problems are analyzed. The methods of solve these problems are presented.
This article studies the rules that restricted the development of football by summarizing the materials and discussing its origin, function and the rise and fall of AFC. It also supplies us with a new perspective to understand the progressive process of change in thoughts during different periods of ancient China so that we can discard the dross (that goes against the objective law) and select the essence, which can practically “make the past serve the present”.
Marx's world history theory provides the theoretical foundation and scientific method to help us understand globalization and modernization. China enters the process of modernization in the progress of the world history. China's modernization not only has characteristics of China but significance of world. The development of world history and the achievement of China's modernization have shown the advantages of the socialist system.
With gradual establishment of the market economy of our country and the improvment of the living standards of people,the catering trade of our country has developed very fast.To control the cost is the key to scuccess.This essay illustrates the significance of cost controls,existing problems of cost controls and how to control cost,and systematically analyses the general method of the cost controls.
Human rights are the essential requests of the socialistic political civilization. The admission of human rights to constitution in china today bases the separation of state-powers and society-rights on rule of law, which is the imporent systematic guaranty to socialistic political civilization. The admission of human rights to constitution in china should be based on the state of china itself.
The rapid development in modern education technology provides physical conditions and the research and its application in the teaching method and course software also supply software foundation. Based on the achievements on the multimedia and network in our university, the others in our research group and I carry through related practice in the course's deepening reform. In this paper, the author summarizes some result in the facet, and considers the later study and application direction.
Shen Cong-wen,a productive writer,created a lot of writings about his native land,west Hunan..His writings,taking on local color lively,describe the beauty of humanity and human relationship there.He observed every phenomenon by a countryman's foresight,reclaimed the unique remote land in the history of modern Chinese literature by right of the lofty mountains and nimbus water in west Hunan.
This paper first analyzes the relations between culture,language and translation,then discusses how to convey culture elements more accurately and properly when we do translation,and puts forward that we should not simply domesticize or foreignize the culture elements but deal with them from a historical and developmental perspective and put all the factors into consideration.
Shuihuzhuan (Heroes of the Marshes), the famous ancient Chinese saga novel, was composed on the basis of the scripts for folk tales spread during the Song and Yuan Dynasties. These story scripts include Huaheshang, Wuxinzhe, Xujingluocao and Wangwenshangbian, in which the heroes were armed with sticks, and Licongji and Qingmianshou in which the heroes used various swords as weapons. Though based on certain historical events, the novel describes nothing more than the legends of some chivalrous men headed by a prisoner called Song Jiang in the North Song Dynasty. These people, leading a vagrant life, were driven to join the Liang rebels against the government. The tragic result lies in their subsequent disasters after surrendering to the emperor.
This paper analyzes the common ratio of financial management. The ratio includes: index of debt paying ability, e.g. liquidity ratio, asset-liability ratio and giving enterprise's profit ability, e.g. the rate of returns of return on net assets, total assets. The paper points out the limitation of these original rates. Through the analysis of the composition and economic meanings, the paper has revised the existing ratio, replaced the existing rate with new rates, in order to appraise debt paying ability and profit ability more accurately, understand them easier, and contribute to make economic policy even more.
This thesis analyzes the present situation of the multi-media teaching, and points out the problems in the multi-media teaching. That is we take the teachers as the principal part, and mainly depend on the multi-media teaching software, so the principal part of the students is ignored. And accordingly the paper brings forward the solution in theory. Thus the effect of multi-media teaching can be achieved by making more practical teaching software.
C language is used to form the data figure files to develop an automatical programming system based on AutoCAD. Input and formation of parts of the figure is completed under AutoCAD, forming the procedure code of numerically controlled processing. It satisfies different requirements of various Lathes, and also raises the efficiency of the Lathers.
