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The school network as the important infrastructure plays many roles such as school teaching, research, management and foreign exchange, and so on. School network directly affects the security situation in the school's teaching activities. In the early stages of the network, security may not be prominent. With the deeply application, various data online in the school network will increase sharply,...
Compared with traditional guard management, this system uses radio frequency identification technology (RFID) to achieve intelligent access management. When need identification, RFID reader issues a fixed frequency radio. Then label card is stimulated, and returns ID number. By ID number and database information, we have developed a lot of access control management functions, such as staff automatic...
The paper begins with discussion on Aspect-Oriented programming (AOP), including its concept, thought, development, and advantage in handling crosscutting concerns, followed by description of the theory of constraints. Furthermore, combined AOP with first-order logic language, a new method to detect the business constraints in requirement analysis is presented, which is simple and practicable, thus...
In the paper, we put forward a new concept of reverse characteristic matrix. We give the completion theorems and completion examples when the corresponding graph of the reverse characteristic matrix of the partial matrix is a block-clique.
This paper implements a PLC(programmable logic controller) based virtual instrument that performs measure and control in mechanical characteristics test for flow control throttle in gas pipeline. The development of the instrument is based on PLC and LabVIEW IDE, which features a novel combination of leading industrial control tools to construct the virtual instrument. Since OPC(OLE for process control)...
With the energy crisis and environmental pollution becoming more and more serious, the traditional fuel vehicles have exposed many shortcomings. Electric vehicles gradually became the focus attention of both governments and car manufacturers, and the popularity of electric vehicles will be the inevitable trend of social development, so the electric vehicles charging station will become indispensable...
An advanced threshold secret sharing scheme to identify cheaters is proposed in this paper by using authentication codes. The performance of the scheme is discussed. The results show that in the scheme the valid shareholders not only can identify the impersonation of an adversary, but also are able to detect cheating of some valid shareholders. In particular one honest shareholder is able to detect...
In this paper, KZQ-36T-300 multi-model controller is used for separate excitation electric motor which is used for material handing electric vehicle. It can control the motor rate and torque to make it in smooth, mute and low. The electromotor ECU testing system aim at the feature of KZQ-36T-300 multi-model controller, imitate many different road and working condition, imitate accelerator output the...
Intrusion detection technology has developed over more than 30 years from the host-based to network-based and has become the indispensable security technology of information systems. On the basis of the study of the existing intrusion detection systems, this paper reviews the history of intrusion detection technology, and sum up the recent hot-spot problems researched. Then, six technical difficulties...
Grid technology provides great opportunity and challenge for education informationize. Grid technology can resolve the problems in existing e-learning platforms and provide more help for further development of e-learning, especially in creating better collaboration environment. Computer-supported collaborative learning (CSCL) based on grid technology was discussed in the paper. Grid computing can...
Network performance management need to monitor, analyze and record several of performance indexes in order to find out the switch happens or potential danger. This paper briefly introduced the goals of network performance management and basic functions, and network performance analysis based on SNMP including the port status analysis, port flow analysis and equipment resources utilization analysis,...
The rapid increasing of variety and quantity of business brings about serious challenge to the server resources of datacenters. It is difficult for the traditional solution of server running and management to tackle with the changing need of services. The physical server sprawl leads to shortage of computer rack and room space. Meanwhile, the energy consuming increases, so do the difficulty of the...
This article describes the basic components of the data acquisition system, LabVIEW software and data acquisition card communication problem and interface. Analysis the error may occur in the process of data acquisition, and take the appropriate measures to reduce the error.
The paper presents modern PLC's network to Physiological parameter monitoring technology. In this paper a founding method and implement of the system for personal and real-time monitoring is described, including the operation of the whole system. The tests demonstrate that the system is stable, reliable as well as high timely and accuracy. This paper accords with the trend that the network is becoming...
In order to improve the management of computer room and exert the effectiveness of the computer room, and an intelligent management system is developed on the basis of radio frequency technique and IC card technology to further improve the security and reliability of the management on computer room.
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