From the inspection of construction draft,the detection of raw materials,and technical disclosure,the paper introduces the controlling points for preventing the crafts on cement-concrete roadbed at its preparation stage,and mainly illustrates the quality inspection and controlling measures for the roadbed,the foundation,the cement-concrete construction and their maintenance,so as to optimize the prevention effect.
Two most important indexes in the safety evaluation of underground drinking water are water quantity and quality index.Aggregative index method was applied in the paper to evaluate the present status of underground drinking water in these two aspects in the typical city named Shihezi.It is contributed to find the unsafe factors in the water supply and also provide the theoretical and decision-making basis for improving the security of water supply in small towns.
The editing of 3D meshes is the key of computer animation technology,and there have been several successful schemes and arithmetics.After the studing and analysis of the methods of 3D mesh's skeletogeny and skeleton's optimize,a skeleton-based arithmetic of local edit for 3D meshes has been proposed.At first,the editing area and the editing curve are got from users.Then,the vertices in this area are changed and rotated smoothly corresponding the changes from skeleton to editing curves.Results of experiment show that the implementation of this arithmetic is intuitional and manipulable.The local edit of irregular meshes is completed easily and efficiently.
Combat is the core power of Wushu Development,but it is weak of main courses design such as combat in Wushu and traditional sports major. Based on this,Beijing Sport University firstly opened Wushu combat course as required course in China. This paper analyzed current situation of Wushu combat course opening and course construction with major trait and social requirement by the methods of literature review,questionnaire investigation,and expert interview. Conclusions: The opening of Wushu combat produced some good result,and it let us know some points needed be improved,such as too high course target,annuity course content,lack of teaching time,non-individualization teaching,lack of pertinent textbook. This research has reestablished subject target for each specialized student and compiled pertinent course content. We should further improve its teaching program,unify teaching content,individualize teaching methods,train teacher,and compile more relative textbooks.
The basic software and hardware structures,function and features of an AC contactor dynamic characteristics testing system. This system uses a laser displacement sensor to measure the core displacement were introduced PVDF contact pressure sensors was used to measure the dynamic contacts contact pressure. This system can not only test the AC contactor dynamic characteristics like the core displacement,contact bounce,excitation voltage and exciting current signal,but the dynamic contacts contact pressure. Previous AC contactor dynamic characteristics test system does not has this function. Using this ststem,a distinct dynamic behavior of contact pressure was got from a dynamic testing of contact pressure on CJ20—25. The dynamic signal of core displacement,contacts contact pressure,coil excitation voltage and exciting current and contact bounce can be obtained with the system,which lays a foundation to further perfection of modern design theory and application of electrical equipment.
The purpose of modern navigation campain studying and the ways,which GPS jammer is used,are outlined,the measures used by US to respond the enemy's GPS signal jamming are analyzed. And the purpose of taking these measures are to ensure the maximum benefits for US in military, politics and economic fields.
It抯 undoubted that English teaching mode in higher vocational and technical colleges should be different from that in general higher educational institutions. But the present situation is that there is no difference between the two. The author, based on thorough analysis of the ESP mode, found the compatibility of ESP with the cultivating goals of higher vocational education. This article holds that applying ESP mode to the English teaching in vocational colleges will improve the teaching efficiency tremendously.
There exist such problems in present education, like the igno ra nce of emotional attitude and the rejection of emotional education. In order to validate the part played by emotional elements in learning language, the differe nt feedback strategies are carried out in two classes of grade one of senior mid dle school, and the follow- up experiment of the students' English- learning a ttitude and language- level improvement has been made for two terms. The result indicates that teachers provide the feedback suitable for their emotional need according to the dynamic emotional change of students at different stages, which can not only stimulate their learning interest and self- confidence, but also promote greatly the improvement of their learning attitude and language level.
Measurement and display terminal makes industrial process value,such as micro-displacement、temperature、pressure and other parameters,to acquisition、processing、display、storage、transmission of complete components. The touch screen display technology,low power consumption MCU application will be combined in this design. Sensors is used to be the input signal, MCU is used to be control core,the touch screen for the user to provide a friendly interactive. At the same time,the design will improves the communication interface,can make the distribution in each measurement point terminal into network,real-time transmission of data and the remote management terminal. In order to facilitate centralized management and monitoring. This type of measurement and display terminal technology is an important development direction of future industrial measurement field.
We study the existence of a class of nonlinear elliptic equation with non-homogeneous boundary values by using variational methods for the various cases that λ,μ∈R and 1p,q2N/(N-2).The results of this paper are new.
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