Applied Mechanics and Materials Vols. 543-547

Abstract: The Point Cloud Library (PCL) is a good tool for point cloud data processing. In this paper, a method of 3D reconstruction for rock mass based on PCL is introduced, where hardware choosing, parallel computing, PCL, and edge extraction are analyzed and used in order to realize a better reconstruction effect, including both precision and speed. The reconstruction results can be used in engineering calculation.

Abstract: Web database technology is one of the popular issues in computer application researches. Information about these five commonly applied approaches to database by Web is obtained by means of experiments. Through data analysis, we can know efficiency of Web database interface under different circumstances, and accordingly some problems that should paid attention to in web database application are brought forward.

Abstract: Software reuse has gained increasing attention by academic organizations and software development agencies. Existing researches on software pattern concentrate on constructing and representing patterns in unstructured way, so it is difficult to maintain and reuse them. This article puts forward pattern-oriented software development process that integrates modeling method based on architecture with software process for software reuse. Through the research on pattern oriented software development process, the reusability of software is enhanced.

Abstract: Different cloud services need different resources, how to use the resources efficiently has become one of the hot research topics about cloud computing. In order to improve the utilization of resources in cloud, this paper proposes an automatic cloud service classification method, which uses an artificial neural network to predict the type of service resource requirements, and classifies services based on the predicting result. In this paper, we do classification experiments on three groups of Web services on Web service site. The experiment results show that, the method is effective and can predict the type of resource requirements for Web services automatically.

Abstract: According to the distribution, autonomy and heterogeneity of the university database, we designed the structure, main arithmetic, query distribution device, result processor and wrapper of the university heterogeneous data integration middle ware by using Java, XML and middle ware. We emphasized on introducing the designation of query distribution device, result processor and wrapper.

Abstract: The LED optical design focused web crawler is proposed based on Shark-Search and topical dictionary. Then the crawling strategy is implemented by extending the web crawler Heritrix. The experimental results show that the design scheme (Topic-First) and its web crawler LED-Crawler can effectively capture the LED optical design relevant web pages. And compared to general search engines, LED-Crawler can improve the accuracy.

Abstract: The technology of object persistence is first introduced. And then an designing scheme of information system is put forward, in which the object persistence layer is based on Hibernate; Finally, the scheme is implemented by Myeclispse development environment. The experiment result demonstrates the scheme simplifies data access processing, improves the readability, maintainability of code and efficiency of programming.

Abstract: Based on the characteristics of rendering phase, a performance-based policy for job assignment under Distributed Rendering Environments (DREs) is proposed. Firstly, a method of evaluating rendering nodes is designed by taking CPU ratio, RAM size, CPU occupation, RAM usage into account. Furthermore, the corresponding algorithm of job assignment for dividing rendering tasks into sub-tasks on available rendering nodes is presented. Whats more, this algorithms correctness is validated by three groups of experiments thereby which offers quantitative guide for optimal job assignment of rendering.

Abstract: Java is a computer programming language that is class-based, object-oriented, java is, as of 2013, one of the most popular programming languages in use. The Java Development Kit (JDK) is an implementation of java language, which consists of a Java Virtual Machine and all of the java class libraries. There are thousands of classes in the java class libraries, and there are many kinds of relationships between classes. In this paper, we use complex network theory to study the topology of the java class libraries, according to analyzing to the networks feature characters, important classes and interfaces in java class libraries are found, we hope to find the relationship between the characters of complex networks and software reliability.

Abstract: This paper designs an automatic web crawler system which crawls music resources on the Internet. Firstly, this paper gives the architecture of the system and the function of each module; then describes the detailed design of each module; Finally, the key technologies and algorithms used in the system are given in a detailed description, including the use of χ2 statistics to select feature words, TF-IDF algorithm to calculate the weights of feature words, the correlation of web page and music theme using vector space model.