分析WSN定位原理的基础上，应用4个CC2530模块搭建了室内定位小型WSN，在设定的直角坐标系中，选择其中3个作为已知位置信息的参考节点，1个作为未知节点。在QtCreator软件开发平台上编...
Abstract Three-dimensional scanning laser vibrome- ters enable extremely accurate non-contact measure- ment of the three-dimensional displacements on the surface of structures。 This paper looks at the feasibility of using such a scanning...
Abstract City developing in the sustainable manner economically, ecologically and socially is the most competitive when it meets citizens demands。 It becomes the most attractive place for life and work for residents。 At the same time, b...
Many neurological and psychiatric diseases are associated with clinically detectable, altered brain dynamics。 The aberrant brain activity, in principle, can be restored through electrical stimulation。 In epilepsies, abnormal patterns em...
Abstract This study was set out to characterize size distributions of oil mists in three workplace atmospheres of the forming, threading, and heat treatment in a fastener manufacturing industry and to assess their exposures to workers。 Pa...
Information System Development and Database Development In many organizations, database development from the beginning of enterprise data modeling, data modeling enterprises determine the scope of the database and the general content。 Thi...
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Abstract For a self-elevated jack up unit, localized failure and collapse may take place during installation phase under severe sea state conditions。 In order to minimize the loss, an innovative method is proposed and incorporated in fin...
其上装有独立的张紧的圆环状皮带（40-45,50-55）。所述圆环状皮带上设有环槽用于容纳缆绳（C），皮带由一种具有弹性的材料制成以保证牵引缆绳的同时和滚筒壁间有相对滑动，当受拉...
In high-performance servo applications a rapid and accurate torque control is desired, preferably without the use of a motion-state sensor。 The use of permanent magnet synchronous motors (PMSMs) combined with the direct torque control (DT...
