Computer and Modernization

Predicting RNA Secondary Structure Based on Hybrid Ant Colony System and Genetic Algorithm

GAO Dong

2011, 1(8): 1-4,8. doi:10.3969/j.issn.1006-2475.2011.08.001

Asbtract ( 724 )

Related Articles | Metrics

RNA secondary structure prediction is an important research field in bioinformatics. A new method is presented to predict RNA secondary structure based on hybrid ant colony system and genetic algorithm. The relationship information between different stems is used to generate the initial population and the accumulated pheromone information is used to construct new secondary structure. Then the folding pathway is simulated, including such processes as construction of the heuristic information, the rule of initializing the pheromone, the mechanism of choosing the initial and next stem and the strategy of updating the pheromone between two different stems. And a new crossover strategy is proposed. By testing the RNA sequences with known structures, experiment result shows that this algorithm improves the prediction accuracy compared with genetic algorithm.

Method of Information Retrieval Based on Rough Ontology

HU Jun;CHEN Chuan-ming

2011, 1(8): 5-8. doi:10.3969/j.issn.1006-2475.2011.08.002

Asbtract ( 829 )

Related Articles | Metrics

Information retrieval based on ontology is an effective approach to achieve knowledge retrieval. A kind of information retrieval methodology based on rough ontology is proposed against formal concept, which is supported by ontology, is not enough to represent incomplete knowledge. This methodology represents ontology in the form of ontology information system. First, given a keyword based query, it combines with the keyword based method to search documents in predefined semantic document space, and then, association search method is used to search individual set and property set relating to query keywords, and property set as equivalence class constructs approximation space. Last, approximation space is used to compute similarity of individual set and document set and according to the degree of similarity to rank. The experiment shows that this methodology can be performed more better than methods based on keyword and classical ontology in precision.

Question Classification-oriented Chinese FrameNet Feature Selection

WANG Wen-jing;SONG Xiao-xiang;LI Ru

2011, 1(8): 9-12,1. doi:10.3969/j.issn.1006-2475.2011.08.003

Asbtract ( 774 )

Related Articles | Metrics

Feature selection is the important factor which affects the question classification of question answering system. By fully using the characteristics of Chinese FrameNet in terms of semantic expression, this paper presents a new question classification-oriented approach in feature selection called strong class information words (SCIW). Firstly, it selects five kinds of Chinese FrameNet features as candidate features, and then uses SCIW to select features. According to each category’s classification precision of features, it sorts the classification ability of each single feature. Through the experiment of combinations of features, it selects the combination of features, which has better classification results. So the feature reduction can be reached.

Research on Chinese-English Cross-language Information Retrieval

ZHU Pei-yan;XIA Dong-liang

2011, 1(8): 13-16. doi:10.3969/j.issn.1006-2475.2011.08.004

Asbtract ( 796 )

Related Articles | Metrics

As the rapid development of Internet, the communication of different nations is increasing and cross-language information retrieval is becoming more and more important. Chinese-English CLIR is especially important for the huge amount of users of the two languages. This paper firstly introduces several IR models, then explains different strategies of CLIR, at last describes some difficulties in Chinese-English CLIR.

An Improved Clustering Method Based on MST

YE Qing;TANG Peng-ju

2011, 1(8): 17-19,2. doi:10.3969/j.issn.1006-2475.2011.08.005

Asbtract ( 749 )

Related Articles | Metrics

Clustering is the assignment of a set of observations into subsets so that observations in the same cluster are similar in some sense, observations in the different cluster are different. An improved clustering method based on MST is raised out. This method can determine discrepancy more exactly, which is more consistent with vision sensing process of human being. Evaluation of clustering shows that it can increase effectiveness of cluster. This method can be used in the classification and recognition of information.

Poisson Curve Settlement Forecasting Model Based on Adaptive Parallel Genetic Algorithm

XIE Sheng-jia

2011, 1(8): 20-22. doi:10.3969/j.issn.1006-2475.2011.08.006

Asbtract ( 771 )

Related Articles | Metrics

The simple genetic algorithm which uses a fixed crossover probability and mutation probability can not always meet the current needs of population, which affects the algorithm performance and efficiency. This paper uses the adaptive crossover probability and mutation probability, unifies the parallel technology and the genetic algorithm, and proposes the adaptive parallel genetic algorithm for Poisson curve settlement forecasting model optimization. The experimental results indicate that, this algorithm provides an effective method for the parameter estimation of Poisson curve settlement forecasting model.

Optimization Method of Materialized View Based on Genetic Algorithm

WANG Yi-gui

2011, 1(8): 23-25. doi:10.3969/j.issn.1006-2475.2011.08.007

Asbtract ( 746 )

Related Articles | Metrics

The materialized view is an important means of increasing the execution efficiency of a data warehouse, but the storage of materialized view costs space. This paper takes the materialized view which has to be scanned during the query or the space size of fact tables as the query time cost, the time cost of query and the storage cost of materialized view as measurement standard to build the cost estimation model and design the optimization algorithm of materialized view based on genetic algorithm, in order to minimize the sum of the storage cost of materialized view and the time cost of query. According to the experiment, the algorithm is feasible.

Analysis Method of Rotor Broken Signal of Cage Motor Using HHT

LUO Hong-xia

2011, 1(8): 26-28. doi:10.3969/j.issn.1006-2475.2011.08.008

Asbtract ( 762 )

Related Articles | Metrics

HHT is a new method of signal processing, which has time-frequency adaptively. It can be used to analyze all kinds of signals, including stationary, non-stationary, linear, non-linear etc. The core of HHT EMD is flattering, which shows the signal in sum of different scale sequences, and instantaneous time-frequency spectrum can reflect physical significance precisely. HHT is used to process rotor broken signal of cage motor, and it shows effective and accurate. The method does not need large numbers of data, and the cost of hardware and software can be saved.

Anti-noise Endpoint Detection Algorithm Based on Time-frequency Joint

LI Ling-guang

2011, 1(8): 29-31. doi:10.3969/j.issn.1006-2475.2011.08.009

Asbtract ( 772 )

Related Articles | Metrics

Endpoint detection is an essential technology in a speech recognition system, its accuracy has a very tremendous influence on the speech recognition performance. This paper proposes a band-partitioning spectral entropy and short-time energy based endpoint detection algorithm based on time-frequency joint. Compared with the two-door method and spectral entropy, its precision is greatly improved. This method has characteristics for noise immunity and real-time, and can be applied to practical application of speech recognition.

Study on Approach for Test Case Generation Based on UML Collaboration Diagram and DFA

LI Qing-song;ZHANG Ye

2011, 1(8): 32-38. doi:10.3969/j.issn.1006-2475.2011.08.010

Asbtract ( 865 )

Related Articles | Metrics

UML collaborative diagram describes objects interaction and the message transferring procedure between objects. So the test scenarios can be generated according to the message flow and control flow in UML collaborative diagram. After analyzing the relationship between UML collaborative diagram and deterministic finite automata(DFA), this paper presents a method of converting an UML collaborative diagram to a DFA model, then generates test scenarios and test cases based on DFA. Finally, this method is applied to test case generation of one real project “manhour quota management system”. Through the data comparison and analysis of the results, the method is proved effective and practical.

Research on Transforming HTML into XML

QIAN Cheng;YANG Xiao-lan

2011, 1(8): 39-41. doi:10.3969/j.issn.1006-2475.2011.08.011

Asbtract ( 732 )

Related Articles | Metrics

Most of the information on the network is programmed in HTML, but the HTML language itself has shortages, so it can not deal with many demands on the network. XML can make up for the lack of HTML, therefore, traditional data network applications and transform XML markup data is becoming increasingly important. In this paper, the conversion from HTML to XML technologies is researched, and the conversion system is implemented in Java language.

Application of SaaS-based Software Service Model in Public Meteorological Benefit Assessment Platform

ZHU Yong-sheng;WANG Jun

2011, 1(8): 42-45. doi:10.3969/j.issn.1006-2475.2011.08.012

Asbtract ( 758 )

Related Articles | Metrics

Public meteorological benefit assessment is an important means which implements China meteorological service development strategy and promotes meteorological business technology system reform and improves the government and the society from all walks of life to the development of meteorological service. After the discussion of SaaS concept and functions of public meteorological benefit assessment platform, on the basis of comparison in SaaS model and the traditional model, this paper analyzes the advantage of SaaS-based software service model in public meteorological benefit assessment, then proposes the solutions of public meteorological benefit assessment based on the software service model of SaaS, lastly builds the logic system structure based on the software service model of SaaS.

Design and Development for Cloud Computing SaaS-level Application Based on GAE

JIANG Wu-xue;HU Xuan-zi

2011, 1(8): 46-48,1. doi:10.3969/j.issn.1006-2475.2011.08.013

Asbtract ( 811 )

Related Articles | Metrics

For the development of high efficiency and quality SaaS-level application program based on cloud computing, this paper expounds the connotation of cloud platform, adopts the JDO technology to complete the design and management of data based on GAE platform, presents a general development workflow for software and develops a message board for teaching based on cloud computing. The practice shows that this study has certain theoretical significance and practical application value.

Design and Implementation of Online Project Management Platform Based on S2SH

WU Zhi-xia;CHEN Ping

2011, 1(8): 49-51,1. doi:10.3969/j.issn.1006-2475.2011.08.014

Asbtract ( 749 )

Related Articles | Metrics

This paper first analyzes the current situation, then simply introduces frame technology about S2SH(S2SH, Struts2+Hibernate+Spring), puts forward an online project management platform based on S2SH after analyzing the modeling technology with UML. The platform adopts Struts2+Hibernate+Spring Web frame and SQL data storage technology. It can provide services about online collaboration for project members through some modules including project management, personnel management, tasks list, message management and so on.

Design and Implementation of Retail POS System Based on SSH Framework

HU Ying;HUANG Yong

2011, 1(8): 52-56. doi:10.3969/j.issn.1006-2475.2011.08.015

Asbtract ( 829 )

Related Articles | Metrics

The paper illustrates SSH(Struts, Spring and Hibernate) open-source frameworks core technology and builds system prototype for the foundation of the system development. At last, it proposes retail POS system design program and development methods.

A New Edge Detection Algorithm Based on Improved Median Filter and Mathematical Morphology

LIU Gao-sheng;MA Xiao-san;WANG Pei-zhen

2011, 1(8): 57-59,6. doi:10.3969/j.issn.1006-2475.2011.08.016

Asbtract ( 761 )

Related Articles | Metrics

Edge detection of noise image is not ideal, so a combined edge detecting algorithm based on improvement of median filter and mathematical morphology is proposed. First of all, the new method uses the improved median filter to reduce noise, and then employs the mathematical morphology to edge detection. The whole process is simulated with Matlab and the results show that the noise can be suppressed effectively, edge details are protected well, the precision of detection is improved evidently, and the detected edge is clear and smooth by using the proposed algorithm.

Design of QR Code Recognition System Based on S3C6410 and WINCE

ZHANG Xun-han

2011, 1(8): 60-63. doi:10.3969/j.issn.1006-2475.2011.08.017

Asbtract ( 783 )

Related Articles | Metrics

In order to promote the application of two dimensional barcode in embedded systems, this paper designs a QR code recognition system. The system is based on S3C6410 development board and WINCE platform. Firstly, this paper briefly introduces the basic structure of QR code. And then, it analyzes the gray level transformation, median filter and binarization of QR code image, and studies the location and rectification of QR code. The last but not the least, it emphatically discusses the problem of real-time image acquisition. After being used, the system shows good stability and considerably high barcode recognition rate.

Research on Iris Image Pre-processing Technology

YIN Hui-ling;PENG Sheng-hua

2011, 1(8): 64-66. doi:10.3969/j.issn.1006-2475.2011.08.018

Asbtract ( 742 )

Related Articles | Metrics

Image pre-processing is the most important step of iris recognition. According to the characteristics of iris image, to solve low operation speed and robustness of iris recognition, this paper proposes a locating arithmetic based on Canny operator and Hough transform, then uses Daugman’s protectin model to normalize and enhance the image by histogram equalization. The experiment result shows that the iris image pre-processing arithmetic proposed in this paper can solve the problem of low operation speed and robustness efficiently, and also can improve the stability and recognition rate of the iris recognition system.

Flexible Use of Brush Tool in Adobe Photoshop CS

GUO Jian-pu

2011, 1(8): 67-70. doi:10.3969/j.issn.1006-2475.2011.08.019

Asbtract ( 340 )

Related Articles | Metrics

Drawing of the image and the image for local modification is an important issue in digital image processing. Brush tool in Adobe Photoshop CS is the drawing and diagram tools core tools in the group. This article describes the use of the preset brush type, the type of built-in types, external brushes and custom brush drawing of; Using brushes of various blend modes for local modification of the image map; And use the brush tool to stroke along the path, use the brush tool to modify masks, and channels of content, and so on. Practice has proved that the creation of flexibility to use the brush tool to increase efficiency, easier and faster to produce fusion digital images of the works of nature. Practice has proved that the flexibility to use these methods to produce efficient, natural digital video productions.

Study and Realization of Synthetic Aperture Radar Imaging Range-Doppler Algorithm Based on OpenMP

ZHANG Yan-hua;WEI Gui-min

2011, 1(8): 71-73,9. doi:10.3969/j.issn.1006-2475.2011.08.020

Asbtract ( 737 )

Related Articles | Metrics

The characteristic and usage of OpenMP are explained. And the synthetic aperture radar imaging range-Doppler algorithm is analyzed for getting the most appropriate operations which can be executed by OpenMP. The original synthetic aperture radar imaging range-Doppler algorithm is converted to a parallel executable program on OpenMP with two parallel computing methods: pragma omp for and pragma omp section. Multi-threads are established to reduce the executive time. It is proved that executive time is reduced to 67%. The processor's efficiency is improved.

Design and Implementation of Software System in Lightning Protection Device Design Check and Accept

LIU Xiao-dong;LI Song-ru;FENG Xu-yu;SHAO Cheng-yuan

2011, 1(8): 74-76,8. doi:10.3969/j.issn.1006-2475.2011.08.021

Asbtract ( 774 )

Related Articles | Metrics

The design check and accept of lightning protection device is a modern meteorological operational work. In order to carry out it more standardized, scientific and efficient, this paper uses C# programming language, SQL Server 2005 database access technology to build a computer software program management platform, complete construction projects basic information entry registration, lightning protection design technology evaluation, amendments comments, trace detection and final acceptance and process documents, design paper, and a series of information processing and finishing of the archive. The software system is through the server SQL Server database for network users to access multiple clients, with the number of lightning information to enter, save, retrieve, sort, backup, and other functions. The implementation of different user rights on the standardization of information, standardized management is through the Word, Excel and AutoCAD and other types of document for a query, print, and daily management, etc. The system is programmed specification, easy to operate, which has friendly user interface and stronger practicability.

Analysis and Design of Charge Interface Between Physical Examination Information System and HIS

LI Ming-cai;BAI Fan;LI Wei-yuan

2011, 1(8): 77-80. doi:10.3969/j.issn.1006-2475.2011.08.022

Asbtract ( 805 )

Related Articles | Metrics

Medical center as part of the hospital information construction, HIS requires fee audit and charge control on the physical examination information system, which is to develop one seamless charge interface between these two information software systems for sharing charge information. This paper introduces the goals and approach of this interface, discusses charge service differences between medical examination and HIS, analyzes advantages and disadvantages of three different interface proposals, at last presents one proper charge interface scheme in detail.

Design of Jinan Digital Municipality Architecture

ZHOU Yong-li;MA Shu-jie;TAN Wen

2011, 1(8): 81-85,9. doi:10.3969/j.issn.1006-2475.2011.08.023

Asbtract ( 801 )

Related Articles | Metrics

This paper elaborates the facility management present condition and existent question of Jinan city municipal services, and surrounding “safety, service, supervision” three subjects of municipal services, proposes the construction object of “Digital Municipality” and discusses “Digital Municipality” design concept and design content based on hierarchical architecture.

Design and Implementation of EAI/EIP

LI Ran-ran

2011, 1(8): 86-90. doi:10.3969/j.issn.1006-2475.2011.08.024

Asbtract ( 801 )

Related Articles | Metrics

Through the analysis of enterprise information integration, this paper chooses B/S structure based on J2EE, adopts Struts+Spring+Hibernate technology to build EAI/EIP. The EAI/EIP is fully open, maintainable, and extendable. This paper presents the system framework firstly, secondly, introduces the design and implementation of each function detailedly, then analyzes the system error handling mechanism, and finally puts up the key technologies of the system.

Research on Management System of Network in SISG Equipments Overhaul

CUI Wei;ZHONG Hou-jin

2011, 1(8): 91-95. doi:10.3969/j.issn.1006-2475.2011.08.025

Asbtract ( 846 )

Related Articles | Metrics

Equipments overhaul network system is to adapt SISG centralized equipments overhaul information management needs, to facilitate a timely reflection of Shaoguan Iron & Steel equipments overhaul information. In accordance with the standardization, this paper analyzes a new process of equipments overhaul tasks. Dynamically tracking equipments overhaul schedule, real-time monitoring the dynamic maintenance of various types of equipment are the main contents of the system.

Design of Journal Information Management System

CUI Jing;XU Jun-fang

2011, 1(8): 96-99. doi:10.3969/j.issn.1006-2475.2011.08.026

Asbtract ( 829 )

Related Articles | Metrics

A journal management system consistent with our college is developed with Web language. This system not only overcomes a series of shortcomings in traditional management mode: published in a long time, relatively low efficiency of the management and can not meet the needs of the growing business volume, but also improves the efficiency of journal management effectively. It is wished to be a valuable reference in various schools development of management systems in line with their own situation.

Design Schema of Scenic Electronic Ticketing System

WU Yan-hua;LIU Tian-feng

2011, 1(8): 100-103. doi:10.3969/j.issn.1006-2475.2011.08.027

Asbtract ( 806 )

Related Articles | Metrics

The functionality, the security, key technologies and the deployment of a scenic electronic ticketing system are explored. The application of this system indicates that the implementation of the system can improve efficiency of the scenic ticketing management.

Design and Implementation of Admissions Management System of Undergraduate Degree for College Student Based on B/S

XU You-fang

2011, 1(8): 104-106. doi:10.3969/j.issn.1006-2475.2011.08.028

Asbtract ( 742 )

Related Articles | Metrics

According to the characteristics of the work of undergraduate admissions, to improve the efficiency and level, the paper researches the undergraduate admissions process, analyzes the B/S structure, designs the system function modules, establishes system structure and implements the management information system of undergraduate admissions.

Research and Implementation of District Emergency Information Platform

ZHANG Qi;LI Le-ming

2011, 1(8): 107-109,. doi:10.3969/j.issn.1006-2475.2011.08.029

Asbtract ( 786 )

Related Articles | Metrics

In recent years, a series of major incidents occur continually, which accelerates the construction work of government emergency information platform. Firstly, the functions of a large urban district emergency information platform are analyzed. Secondly, architecture of the platform is given, and the architecture includes five layers, such as network communication layer, information resources layer, information sharing and exchanging layer, business layer and portal layer. Finally, by the analysis of the case of Tianjin Economic-Technological Development Area emergency information platform, the scheme of a district emergency information platform is introduced.

Design of Online Monitoring System for Thermal Characteristics of Oil Immersed Transformer

WANG Shao-jie;HUA Ze-xi;WANG Li

2011, 1(8): 110-113. doi:10.3969/j.issn.1006-2475.2011.08.030

Asbtract ( 836 )

Related Articles | Metrics

Thermal characteristic is one of the important bases for fault detection and running of oil immersed transformer. It’s meaningful to detect abnormal operation timely by online monitoring system of temperature and temperature rise of transformer. The system based on DS18B20, uses MCU as slave computer, and high performance PC as host computer. It achieves to monitor the temperature and temperature rise in real time, and completes data displaying, curve drawing, alarming, report printing, fault recording and analysis. The results show that the system can shorten MTTR and prolong MTBF.

Design of Data Acquisition and Monitoring System Based on ZigBee

WANG Hua-bin;LUO Zhong-liang

2011, 1(8): 114-116. doi:10.3969/j.issn.1006-2475.2011.08.031

Asbtract ( 837 )

Related Articles | Metrics

In order to collect and monitor the data of indoor environment temperature and humidity in production site, this paper proposes a kind of technical solution based on ZigBee wireless sensor network. The experimental results of ZigBee star network system show that the system has a stable collecting effect, and the characteristics of fixing easily, using flexibly, economy, expanding easily and so on. It offers a scientific ground for application research on wireless sensor network.

Realization of Multi-serial Communication Using Moxa Multi-serial-port Card Based on VC++

ZHAO Su-juan

2011, 1(8): 117-119,. doi:10.3969/j.issn.1006-2475.2011.08.032

Asbtract ( 822 )

Related Articles | Metrics

With a production Kanban system, the realization of multi-serial communication using Moxa multi-serial-port card and PComm based on VC++ is discussed. The running result of the system displays that the communication programming is not only very easy but also has high performance.

Design and Implementation of Wireless Digital Voice Prompt System Based on Train Interval

JIANG Guo-song;XIONG Xin

2011, 1(8): 120-123. doi:10.3969/j.issn.1006-2475.2011.08.033

Asbtract ( 802 )

Related Articles | Metrics

With the continuous development of automatic blocking technology, ZPW-2000A, as a unified standard, is widely used now, and UM71, multi-frequency shift and other standard information will also be a period of time there. Regardless of format, the monitoring of signal equipment for the interval is always a weak link. In particular, the train speeding demands to a higher range of signal equipment. To address these needs, this paper proposes and implements to prevent construction workers in the railway station, the train cars by the range of injury when operating high-tech equipment. The system can monitor an extension from the scheduling, computer monitor, or computer interlocking collection information. It can also be mechanical room directly from the signal wiring collection of information, gathering information in two ways: serial acquisition mode and CAN bus mode.

FLV File Analysis and Its Application on Website

ZHANG Yong-bo;SONG Xiao-li

2011, 1(8): 124-125,. doi:10.3969/j.issn.1006-2475.2011.08.034

Asbtract ( 733 )

Related Articles | Metrics

Flash video is now the most popular video format with the characters of high compression ratio, quick decoding and high quality of pictures. This paper studies the FLV file structure and the specific meaning of each field and then mainly introduces how to use two examples about open source video player on website.

Research on Relationships Between Internet of Things and Embedded System

YANG Hui;WANG Yi;

2011, 1(8): 126-129. doi:10.3969/j.issn.1006-2475.2011.08.035

Asbtract ( 761 )

Related Articles | Metrics

This paper introduces the definitions of Internet of Thing and embedded system, and describes the technologies of them, the composites of Things and embedded system devices, and their application fields. The inner relationships between the Internet of Things and the embedded system are analyzed from above four views. And the differences of them are discussed. Then it comes to the conclusion that the Internet of Things is the outcomes of complex embedded systems. In addition, one of models is designed for the thing of the Internet of Things.

Simulation Analysis of Linear Equalization and Decision Feedback Equalization Based on LMS Algorithm

WANG Dan;YANG Lei;PU Jie-xin

2011, 1(8): 130-132,. doi:10.3969/j.issn.1006-2475.2011.08.036

Asbtract ( 801 )

Related Articles | Metrics

Two schemes including both linear equalization (LE) and decision feedback equalization (DFE) are introduced based on the adaptive least mean square (LMS) algorithm. Simulations are utilized to compare the equalization performance of the LELMS and the DFELMS in the hybrid mode of training and decision-directed. Moreover, the influence of the length of feedback filter on the DFELMS algorithm is analyzed. Results indicate that in the training period, the LELMS outperforms the DFELMS; in the decision-directed phase, for the channel in good condition, the LELMS has a desirable equalization performance comparatively; in the case of the ill-conditioned channel, the LELMS degrades greatly whereas the DFELMS equalizes the channel better as the length of feedback filter increases.

Research on Kernel Function Selection Simulation Based on SVM Classification

SONG Hui;XUE Yun;ZHANG Liang-jun

2011, 1(8): 133-136. doi:10.3969/j.issn.1006-2475.2011.08.037

Asbtract ( 787 )

Related Articles | Metrics

The basic theory and realization of support vector machines are described. Then the kernel functions of SVM and its optimization problem are discussed. The different kernel function selections are carried out simulation experiments with glass identification database, iris plants database and car evaluation database of UCI. The simulation results show that the data of same type with different kernel function have different classification efficiency and there is great influence for classification efficiency with right selection of kernel function.

Optimization of Plane's Dislocation Periodic Maintenance Workflow Based on Genetic Algorithm

MA Deng-wu;ZHANG Yong-liang;GUO Xiao-wei;LÜXiao-feng

2011, 1(8): 137-142. doi:10.3969/j.issn.1006-2475.2011.08.038

Asbtract ( 783 )

Related Articles | Metrics

Genetic algorithm (GA) is used to optimize plane’s periodic maintenance dislocation workflow firstly. The multi-limit optimization model of dislocation work is built according to critical path method (CPM), and the law of workable solutions alternation is used to design the coding and decoding means, and the GA, improved with the simulated annealing operator and the elite saving operator, is used to solve. The simulation results demonstrate that, to solve the multi-limit problem, the improved GA is much stronger in best-solution search ability than the simple GA; after optimization the finish time of dislocation work is shorter 14.70% than before, and it proves that GA is good for the optimization of dislocation periodic maintenance workflow.

Optimal Design of Remotely Operated Weapon Station Structure

ZHANG Wei;CHEN Yu-zhong;HU Yong-ming

2011, 1(8): 143-145,. doi:10.3969/j.issn.1006-2475.2011.08.039

Asbtract ( 804 )

Related Articles | Metrics

The static and dynamics structural characteristics of remotely operated weapon station (ROWS) are analyzed based on the fourth intensity theory and modal analysis theory. The stress and strain of the bracket under shooting load of weapons is obtained. The structure of the bracket is redesigned to reduce the weight, which leads to a reduction of 54 percent of weight and 51 percent of moment of inertia. Modal analysis of the system is carried out. The fundamental vibration frequency of the system is 156.71Hz, which means that there is no danger of resonance on condition of firing.

Discussion of Optimization Methods About Computer Matching Model Parameters

HAN Wei;DING Shen-jun

2011, 1(8): 146-148. doi:10.3969/j.issn.1006-2475.2011.08.040

Asbtract ( 784 )

Related Articles | Metrics

This article offers two different optimization methods as for the problem of parameter’s optimization in the mathematics model. That is, non-linear programming function and the function of gaopt in the genetic algorithm optimization toolbox. In view of respective characters of the two different optimization methods, the optimal value of gaopt function is regarded as the initial value of optimization of non-linear programming functions. The method solves the problem about the uncertainty of the initial value of non-linear programming functions and the required parameter values would be quickly and reasonably searched. The result proves that the method of the combination of genetic algorithm and function transfer preferably realizes the optimization of parameter values in mathematics model.

An Optimization Algorithm of Real-time Customer-counting Query Based on Multiple Time Granularities

SU Li-kai

2011, 1(8): 149-152. doi:10.3969/j.issn.1006-2475.2011.08.041

Asbtract ( 764 )

Related Articles | Metrics

The real-time flow of customer data changed with time is classified as the time series. According to the receiving frequency, the relational model is applied for the storage of the customer data. In order to weaken the influence of the query efficiency of the real-time customer-counting by the receiving frequency, the views of the customer data with multiple time granularities are established and the query efficiency is improved.

Construction and Performance Analysis of Database Cluster System in Virtual Environment

LIU Yu

2011, 1(8): 153-156,. doi:10.3969/j.issn.1006-2475.2011.08.042

Asbtract ( 773 )

Related Articles | Metrics

The configuration and management of database cluster based on physical host have the problem of complex configuration and poor flexibility. Virtualization technology combined with cluster system management makes the system management and resource construction more flexible and transparent. This paper presents Xen Server virtual platform and MySQL database cluster system based concept proof scheme. The performance of the system is analyzed by comparing with the testing data of MySQL 5.1 single server version. The solution proposed in this paper not only reduces the complexity of database cluster system deployment through using the rapid replication function of virtual platform, improves the flexibility of configuration, but also has higher performance advantage in concurrency and massive data processing compared to MySQL 5.1 single server version.

Research and Implementation of Data Exchange Platform Based on Database Replication Technology

GUO Xiang-yang

2011, 1(8): 157-159,. doi:10.3969/j.issn.1006-2475.2011.08.043

Asbtract ( 737 )

Related Articles | Metrics

“Information island” is a major problem faced in the E-government information technology. This article describes the issues brought by “information island” and the status of data exchange platform application, suggests to use database replication technology to build data exchange platform for the feasibility and implementation methods, and discusses the application of this technical solution.

Use Opportunely SQL Statements to Improve C&C08 Maintenance Efficiency

SHI Mei-fu

2011, 1(8): 160-163. doi:10.3969/j.issn.1006-2475.2011.08.044

Asbtract ( 869 )

Related Articles | Metrics

Through comparison and examples, this paper discusses how to use SQL statements to improve the C&C08 digital SPC switching system maintenance efficiency.

Research on Adaptive Watermarking Techniques for Digital Images Based on HVS

DU Hao

2011, 1(8): 164-167,. doi:10.3969/j.issn.1006-2475.2011.08.045

Asbtract ( 817 )

Related Articles | Metrics

This thesis researches the watermarking techniques. Through combining human visual system, an improved algorithm based on DCT transform is proposed. The way is to use the adaptive quantization on the basis of JPEG quantization table, and meanwhile selecting the place of watermark embedding improved. Experimental results show that the selection of embedded place makes algorithm adapted to the image with different general characters and local characteristics, and therefore it generates a lot of mobility. At the same time, good stability and visibility are testified from the experimental data and macroscopic observation.

Research on System Access Control Based on Spring Security ACL

ZHANG Zhao-ri

2011, 1(8): 168-170. doi:10.3969/j.issn.1006-2475.2011.08.046

Asbtract ( 804 )

Related Articles | Metrics

Spring Security ACL is an access control security framework, it can control all kinds of resource authority. This article introduces the concept and mechanism of Spring Security ACL, at the same time describes the implementation and process of Spring Security ACL security framework by example.

Public-key Watermarking Algorithm Based on Image Feature Keypoints

HU Ying;XIAO Jing-hua

2011, 1(8): 171-173,. doi:10.3969/j.issn.1006-2475.2011.08.047

Asbtract ( 798 )

Related Articles | Metrics

Aiming at the weak robustness to the geometric attacks of the public-key watermarking algorithm, a public-key watermarking algorithm based on image feature keypoints is proposed. The feature keypoints of image are extracted by Harris-Laplace algorithm, the watermarking in the DCT domain of the feature zone is embedded, so it can rest the RST attack.

Research on Prevention of XSS Attack

LIU Hai;XU Fang;GUO Fan

2011, 1(8): 174-178. doi:10.3969/j.issn.1006-2475.2011.08.048

Asbtract ( 745 )

Related Articles | Metrics

Cross site scripting loophole is a kind of Web application security loophole, which is reported mostly these years. At present, there are few researches on such subject. This article summarizes how to keep watch XSS attack, including analyzing and comparing all kinds of existent measures for XSS attack, listing the advantages and disadvantages of all kinds of precautionary measures, finally putting forward a kind of schema to keep watch XSS attack.

Design of Power Plant Side Scheduling Data Network Security

LÜDing-ming

2011, 1(8): 179-180. doi:10.3969/j.issn.1006-2475.2011.08.049

Asbtract ( 858 )

Related Articles | Metrics

According to the secondary power system security principles of “security partition, network-specific, horizontal separation, vertical certification”, this article discusses the design features of power plant side scheduling data network security.

On Potential Security Risks of Computer-based Test in NCRE and Its Countermeasures

XIA Da-wen

2011, 1(8): 181-184. doi:10.3969/j.issn.1006-2475.2011.08.050

Asbtract ( 741 )

Related Articles | Metrics

This essay analyzes the potential security risks of the computer-based test in NCRE combining with practical experiences as a system manager with zero mistakes for many years. To meet its security need and ensure a fair, safe and stable environment in the test, this essay investigates its potential security risks on aspects of system, data, Web, user, catalogue, etc., and puts forward some effective measures. It is worth used as reference and popularizing.

Typical Applications of Matlab for Teaching “Digital Signal Processing”

WU Shi-yun;WANG Yi-yan

2011, 1(8): 185-189. doi:10.3969/j.issn.1006-2475.2011.08.051

Asbtract ( 770 )

Related Articles | Metrics

Aiming at the characteristics of “digital signal processing(DSP)” course, which include difficult to learn, too many theories and concepts, not easy to be commanded and so on, the paper applies the software of Matlab to theory and practice teaching, hoping it can improve the students’ comprehension of the course. Several typical applications as examples are set to guide the students take Matlab as a tool to confirm the relative principles through writing programs. Experimental results show that it not only improves students’ motivation and learning efficiency, but also trains the skills of solving problems; meanwhile it also cultivates the creative consciousness of students.

AHP and Its Application in Recruitment

JIN Qiao-hua;WANG Yong-gang;JIA Zhi-yang

2011, 1(8): 190-192. doi:10.3969/j.issn.1006-2475.2011.08.052

Asbtract ( 860 )

Related Articles | Metrics

This paper establishes a hierarchy, structural pair-wise comparison matrix, calculates the weight of vectors and does the consistency test, calculates the weight of combinatorial vectors and does the combinatorial consistency check, calculates the weight of each factor to construct the AHP model, and uses AHP to solve practical problems——staff recruitment, gets the weight of all factors in the candidates comprehensive case and a score ranking for all candidates. The model can make the recruitment of staff more objective, accurate, systematic and effective.

Design of Knowledge-based Online Examination System Paper Bank

CAI Xiao-yun

2011, 1(8): 193-197. doi:10.3969/j.issn.1006-2475.2011.08.053

Asbtract ( 780 )

Related Articles | Metrics

A method of knowledge-based examination paper bank construction is presented. The method to construct knowledge relearns examination and evaluation to the students from the perspective of knowledge construction and can help students learn and acquire knowledge in examinations for development. Knowledge, questions, learners and the rules are designed on the basis of experts’ systematical theory. The design of the exam system of knowledge and data object model is primary to knowledge-based systems, and also a basis of intelligent fixing test paper and evaluation.

Methods of Access Excel Based on BasicExcel

LIU Rui-tong;GOU Xian-tai;MA Chao;ZHANG Jian-feng

2011, 1(8): 198-200. doi:10.3969/j.issn.1006-2475.2011.08.054

Asbtract ( 1045 )

Related Articles | Metrics

The advantages and disadvantages of several kinds of typical methods of accessing Microsoft Office Excel file content by C++ language in Visual Studio 2005 is analyzed. BasicExcel class which accesses Excel fast is used when accessing the large amounts of data in the Excel file which does not contain formula or chart. A method of modifying loading function, sheet operation function, accessing cell function and saving as function of BasicExcel is provided in detail. This class easily supports Chinese platform.

Application Research on Excel in VC++ Environment

DU Shi-yu;WANG Zi-yuan

2011, 1(8): 201-203,. doi:10.3969/j.issn.1006-2475.2011.08.055

Asbtract ( 835 )

Related Articles | Metrics

This study introduces a method of achieving bidirectional data transfer between Excel and database in VC++ environment based on OLE technology. The function of secondary processing and query processing in Excel can be fully used. It is a good guide to realize kinds of data report.

Research and Realization of University Office Information System Based on Workflow

GAO Chun-ling;YUN Ya-li

2011, 1(8): 204-206. doi:10.3969/j.issn.1006-2475.2011.08.056

Asbtract ( 759 )

Related Articles | Metrics

The paper researches the scheme and pivotal techniques to carry out a university office information system, presents a university office information system that defines user-defined workflow by user-defined form, manages users and privileges by department/role-based accessing, enhances security by handwriting remaining, electronic seal, system log and etc.

Table of Content