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Sun X.J.,Beijing Polytechnic College
Applied Mechanics and Materials | Year: 2014

The development of science and technology has driven the progress of the examination system, through the development of database and intelligent, data mining, the database technology is also developed. But at present there are insufficient data mining scope, so must strengthen the examination analysis system has the function of data preprocessing, data mining to meet the needs of data mining algorithm, and accelerate the execution efficiency of data mining, to prevent the deviation, as a result more than the entire process of data mining and data pretreatment cost and time needed to about forty percent less. So, in order to analyze the test system in a large number of test data, in this way is very necessary to carry on the pretreatment before the data into the database is the important factor of data mining. © (2014) Trans Tech Publications, Switzerland.

Zhu Y.Z.,Beijing Polytechnic College
International Journal of Security and its Applications | Year: 2016

With the development of computer network technology, more closely the relationship between people and network.The current network security problem has also been gradually into the public's field of vision, actively carried out on the network intrusion detection becomes an important direction of the development of the network security technology.On the basis of the original BP neural network, this paper puts forward an improved algorithm, and applied to network intrusion detection. After the test, the method is better than traditional convergence, better performance. © 2016 SERSC.

Chen J.,Beijing Polytechnic College
Jinshu Rechuli/Heat Treatment of Metals | Year: 2012

Hot-dip galvanizing experiments were carried out on pure iron, Q195, Q235 and Q345 steels in baths of pure zinc, 0.1%Ni, 0.1%Co, 0.1%Ni+0.1%Co, 0.1%Ni+0.2%, respectively. Microstructure and thickness of the coatings were observed and measured under microscope and scanning electron microscopye and the effect of the alloying elements on microstructure and thickness of the coatings was investigated. The results show that Ni and Co have a certain effect on these four substrate materials. Addition Co alone can fine the microstructure of the coatingg, but it, has little effect on thickness. Addition 0.1% Ni alone can control silicon reaction, especially for Q235 steel substrate. Addition both Ni and Co can greatly restrain silicon reaction (namely Sandelin effect) and a thin and compact coating can be obtained.

Liu Y.,Beijing Polytechnic College
Lecture Notes in Electrical Engineering | Year: 2013

In this paper, by analyzing the shortcomings of existing technologies, we introduced a convenient and flexible smart home system based on Internet of Things. We have developed a demo version of this system and used a cell phone to query and control it locally and remotely. The experimental results show that this system can provide a real-time and reliable management for the smart home. It is believed that with the development of Internet of Things, smart home system will become more intelligent and multiplicity. © 2013 Springer-Verlag London.

Liu Y.H.,Beijing Polytechnic College
Applied Mechanics and Materials | Year: 2014

In recent years, China's coal industry accidents occur frequently, seriously affect the development of the coal industry, for the job site in the coal mine monitoring system installed several monitoring of coal mine production equipment to ensure safety and reliable operation of equipment. However, a plurality of building monitoring system meets some problems, such as reducing the waste of resources and production costs, and improve the level of safety management, the use of embedded technology designed S3c2440 based multi-protocol converter, prompting the original coal use different protocols and applications compatible with a variety of monitoring systems, monitoring of information data seamless transfer and access into the Ethernet switch, the status of the mine production equipment is transferred to the centralized control center for centralized management. This paper will be based on coal mine multi-protocol converter design S3c2440 detailed analysis and research. © (2014) Trans Tech Publications, Switzerland.

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