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Jing Y.,Shandong Jiaotong University | Zhao F.,Shandong labor vocational and technical college
Advanced Materials Research | Year: 2014

By comparison, this paper determines inner bore processing technic program of the engineering machinery hydraulic cylinder block and makes some analysis of the rolling processing technic and relevant emerging issues to propose reasonable and feasible process route and process parameters and ensure the quality of the cylinder processing. It also shows the design of boring-rolling compound tools with high efficiency and high precision for given cylinders. © (2014) Trans Tech Publications, Switzerland.

Along with the development of information technology, archives information has developed from original paper archives to current digital archives, electronic photos, electronic drawings etc., and the utilization of archives has also achieved computer search and online inquiry. The development of various modern information stealing technologies has brought potential threat to the security of network archival information, especially some military scientific research archives, student archives etc., which are not only involved with the normal operation and development of schools, but also with official secrets. Therefore, establishing the archives security system of colleges and universities has become the priority among priorities in the archives work of colleges and universities. This article starts from the current status of the archives security system construction of colleges and universities, analyzing the apparent features of the technology of the Internet of Things in information technology, and then raising the specific application measures of the technology of the Internet of Things in archives security system construction of colleges and universities, making suggestions on the archives security system construction of colleges and universities. © (2014) Trans Tech Publications, Switzerland.

Mi G.,Shandong labor vocational and technical college
Applied Mechanics and Materials | Year: 2013

Machine element survey is a process by measuring, drawing, analysis, design according to existing elements, finally drawing the formal pattern of the element. The method that the operator used to deduce the original design dimensions based on measured value analysis is called dimension roundness. It includes the measured data processing, defining the basic dimensions, tolerances, limits and fits type. Base on years of teaching, experiment, analyzing and practical producing experiences, I found that the dimension roundness and the presentation or definition of related elements in all textbooks were inexact and unreasonable. It influenced the effectiveness of higher vocational education. This paper analyzed advantages and disadvantages of several dimension roundness methods, and then put forward the innovative practical roundness method. I revised the unconventional design dimension roundness; and pointed out that no matter using what roundness method, result diversity always exists. © (2013) Trans Tech Publications, Switzerland.

Song X.-X.,Shandong University | Song X.-X.,Shandong labor vocational and technical college | Tan Z.-Y.,Shandong University | Chen B.,Shandong University | Li Q.-Q.,Shandong University
Gaodianya Jishu/High Voltage Engineering | Year: 2011

The homogeneous dielectric barrier discharge with multiple current pulses in atmospheric pressure helium was numerically investigated by using the one-dimensional fluid model. Meanwhile, the influences of amplitude and frequency of the applied voltage on the discharge characteristics were discussed and analyzed. The characteristics included the number of discharge current pulses and the time interval between two successive discharge current pulses. The simulation results show that, in the case of variable voltage amplitude and frequency, the number of current pulses and time interval of the corresponding current pulses change. Moreover, a linear fitting approach of estimating the starting voltage and frequency for the formation of a new discharge current pulse is presented, and the estimated starting voltages and frequencies are given.

Zhen W.B.,Shandong labor vocational and technical college
Applied Mechanics and Materials | Year: 2014

This paper puts forward a network anti-interference method based on multi-state hidden layers' distribution with iterations. It first calculates the distribution characteristics of multi-state data, and analyzes the law of network data; secondly, statistically analyzes the distribution of multi-state hidden layers, introduces constant iterations and update, and extracts system noise characteristics; then separates noise and network data, so as to implement anti-interference; finally carries out experiments with a set of test data in the actual network, and the results show that under strong interference, network anti-interference method based on multi-state hidden layers' distribution with iterations effectively reduces the network error rate, basically does not affect the normal communication, and has a good application value. © (2014) Trans Tech Publications, Switzerland.

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