The coal mining not only makes the original geologic structure form fault, but also leads to the strata cracks from shallow to deep. All the gathering of gas, movement of underground water, breakdown of the coal rocks and the mining stress field do have matter with the cracks. The major and extraordinary accidents, especially the
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Along with industrial development in our society,sewage has polluted our environment seriously. For the traditional treatment methods have some shortcomings like large investment and long development cycle covering, the sewage treatment technology is hindered in the promotion of practical application. Because of its unsatisfactory treatment effect, Therefore how to solve this problem is becoming our
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Along with industrial development in our society,sewage has polluted our environment seriously. For the traditional treatment methods have some shortcomings like large investment and long development cycle covering, the sewage treatment technology is hindered in the promotion of practical application. Because of its unsatisfactory treatment effect, Therefore how to solve this problem is becoming our
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Programmable Logic Controller (PLC) is essential for industrial control system, which is the core of control system. In other countries, the traditional PLC technology has been developed and applied for decades, and the technology is relatively mature and perfect. In our country, although the research and application of PLC technology has also experienced many years,
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Programmable Logic Controller (PLC) is essential for industrial control system, which is the core of control system. In other countries, the traditional PLC technology has been developed and applied for decades, and the technology is relatively mature and perfect. In our country, although the research and application of PLC technology has also experienced many years,
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With the development of economy and the society,people’s living standard has been greatly increased, China is gradually walking to”the age of the automobile”,when the people are enjoying the huge convenience brought by the car,they are also facing a lot of problems that to be more and more serious:such as the traffic congestion,the environment pollution, the
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With the advancing of the information technologies, the WSN applications based on Zigbee are increasingly deployed in many areas. However, the existing WSN monitoring platforms are far from the goal of monitor in anytime, anywhere due to their high implementation cost, relying on computers and the Internet and the lack of mobility and portability, which
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On November 12th, 2007, The Open Handset Alliance has released Google Android SDK. Because of the Android’s huge advantage of open source character, the operating system has became fashionable rapidly all over the world. The research in the end of 2010 has indicated that Android ,which has been released only two years has surpassed Symbian
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Low energy and static code size have become a critical issue in modern system design due to the widespread of mobile embedded systems and its very limited battery capacity. All of those new demands make the traditional, static compiling difficultly to meet. Meanwhile, the rapid range of architectural changes in processors, especially in the embedded
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With the rapid development of information technology, more and more embedded electronicproducts come into people’s lives and the development technology of embedded systems is favoredby the majority of electronic engineers.SOPC is the inevitable product when the embeddedtechnology developed to a certain extent.SOPC is a special kind of embedded systems.First, it is asystem on a chip,
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