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According to the complex, heavy workload and low automation of traditional dielectric loss measurement, a digital and automatic measurement system based on electronic technology and PC technology is designed. The system can work in two modes, has features such as automatic calibration and automatic range. It can achieve the functions of fast dielectric loss measurement, data storage and analysis and...
As an effective global search method, genetic algorithm has obvious advantages. But it usually has problems of premature convergence and local optimum in practical application. According to this, a new algorithm with improved selection, crossover and mutation is proposed. Through the simulation experiments, the improved algorithm shows its faster convergence and better stability. It is valid which...
This paper describes the implementation and evaluation of a system used for mobile learning. It describes how such a system can be monitored, and what must be taken into consideration for the deployment of the system on mobile devices. It is also leaves room for the modification of the system.
The initial real-time information system for Bus Rapid Transit (BRT) is based on Global Positioning System (GPS) in Ji'nan, it can't provide accurate real-time information of buses arrival/departure at stop, and missing data of GPS is often found, especially under elevated highway or in bad weather. The papers put forward a new way to provide real-time transit information for BRT based on GPS/Signpost...
Time synchronization is one of the key points in distributed real-time computer system. At first, a time synchronization method under 1PPS signal is put forth. Secondly, two kinds of relevant synthetic disturbance are analyzed, and time synchronization logic is studied to cope with the disturbance. Arena software is chosen to model and simulate the time synchronization procedure. At last, the whole...
In view of the current widely used city intersection signal control system, oriented by the concept of automatic sensor signal control, this paper tries to use a computer's procedural method, with the input of initial conditions, after automatic calculation, a result which will make the vehicles go through the intersection causing the shortest signal control delay time totally will be generated automatically,...
In order to settle the present problem of lack of laboratory equipment in colleges, it supplies a method of creating remote virtual laboratory with taking a specific experiment for example: it programs the computer with the software LabVIEW on the base of connecting hardware and computer well, and then use Web publish and DataSocket in LabVIEW to make the remote control functions of experiments true...
A new multi-channel virtual ultrasonic testing system which consists of PC cards, focus probes and machine system is proposed. Using this system the A, B, C scan, data processing and quantitative analysis can be realized. In addition, computer technology, virtual instrument, signal and image process technology are introduced to ultrasonic nondestructive testing and the range of application of traditional...
A new kind of logging device was designed based on Nios II technology. The device make use of Nios II processor which was embedded in FPGA to achieve depth processing, tension, magnetic marks acquisition, Manchester code through custom components. The logging system based on Nios II technology has some features such as simple hardware structure, stable and reliable performance; it could be realized...
Based on the researches of E-education GRID and Cooperative Intelligent Grid, a new cooperative intelligent grid based E-education platform was designed.
The cycle fluctuations of consumer ethnocentrism segmentation have important implications in the enterprises developing marketing strategy. With empirical analysis of mobile phone and computer markets, this study demonstrated that the Chinese mainland e-market segmentation based on the consumer ethnocentrism has a seasonal cyclical volatility with 16 months a period, each year in December to reach...
This paper designed a wall-climbing robot for painting the hull surface. The robot walked with caterpillar, permanent adsorption and driven by AC servo motor, the paint system was controlled by solenoid valve and pressure pump. Control system uses the supervisory computer and lower computer of two-stage distributional control mode. And the robot itself is equipped with a visual system to observe the...
In the paper, a simple motion controller based on LM628 is developed, aiming at the few axes medium-sized and minitype numerical control system. This controller achieves many functions, such as multi-axes linkage, beeline and circular arc interpolation, position and condition reporting, digital PID filter, special I/O and configurable I/O and so on. It can be used to numerical control machine tool...
In the process of producing copper bar, because of the cast copper billet, rolling equipment, rolling process and other reasons, the surface of copper bar appear some defects such as crack, scarring, roller printing, scratches, holes, scales, pitting, and so on. These deficiencies not only affect the appearance of the product, but more importantly reduce the product's corrosion resistance, abrasion...
Adopt the concept of mutation in Genetic Algorithm to improve Particle Swarm Optimization. The experimental results show tow advantages for the mutation strategies. Firstly, It's workable for the algorithm and the performance was superior to fuzzy PSO and hybrid PSO; Secondly, the agitation strategy was more flexible.
By analyzing the method of present generating test paper, the article represents a method of generating test paper based on genetic algorithm. A mathematical model for generating test paper is built. By putting forward the intercross operator and mutation operator in consistence with the independent coding, an automatic generation system for test paper is realized.
In order to improve the management efficiency and convenience of the access control system in intelligent building, according to the new demand, a network entrance guard management software has been in this paper developed based on original software for single computer system. Inquiring real-time network data, browsing real-time information and long-distance monitoring can be realized by use of the...
Based on the analysis of the characterizing of the emergency knowledge, an automatic constructing of semantic lexicon in emergency domain is proposed. In this paper, five dimensions are designed to represent the words of the emergency domain and an automatic construction system of semantic lexicon is provided. Based on the semantic dimension designed above, Self Organizing Map is applied to unsupervised...
Traditional internal control of accounting information system can not meet the requirements of network environment in changing technical environment, so it is urgent to establish and perfect the internal control of accounting information system in network environment so that to meet specific demands of new environment for business internal control of accounting information system. This article analyzes...
Language learning strategies play an important role in the process of foreign/second language learning. Recently, with the budding development of CALL (computer assisted language learning), computer is becoming an increasingly important part of the students' English learning. This paper is designed to investigate effects of CALL on students' language learning strategies. With the help of questionnaire...
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