Applied Mechanics and Materials Vols. 496-500

Abstract: Meteorological metadata are systemically analyzed. On the basis of the basic concepts of metadata,Core metadata extension mechanism of meteorological scientific data is studied, and principle of the metadata extension is discussed.

Abstract: With the rapid development of the automotive industry, vehicle network has become a new topic. Ethernet, as the wireless communication network technology applied to PC, the official business, the intelligent house-hold appliance and other communicating devices, has entered the field of vehicle network applications. This paper introduces the recent development of the vehicle Ethernet and its characteristics and conducts the general analysis on the future development trend of it by making a contrast of the Ethernet and CAN.

Abstract: According to the characteristics of mobile navigation based on PDA, the map scenes in the screens should be changed in real time, which needs to dynamically output map labels to adapt to these challenges. In this paper, based on angle bisector advanced algorithm is used for labeling dynamic on line water system and obtaining smooth location of line features as the location of labels. The results obtained in this paper can be applied to solve the problems of ambiguous expressions and/or invisibility of labels of line features, achieving the unity of the integrity and aesthetics of the automated output.

Abstract: In order to meet the requirement better of heterogeneous information integration, this paper proposes a XML information integration model based on ontology technology. This model comes to share and reuse of structured knowledge, explicitness of domain knowledge. According to mapping method from ontology to XML schema, the model also comes to document query based on global semantic, solves the semantic heterogeneity of XML information integration. This paper gives a mapping algorithm to implement the validated verify of XML semantic information for automatic indexing information. Finally, this paper explained simply the query algorithm so that the users can conveniently the query of heterogeneous XML information.

Abstract: The theoretical study of FPCA shows that FPCA algorithm has better generalization performance than existing PCA and its extended algorithms. But this theoretic conclusion was not confirmed by existing experimental results because of the problems of evaluation criterion. Introducing the idea of clustering performance criterion of LDA, we proposed a general performance metrics for PCA and performed numbers of experimental studies to compare FPCA with existing PCA and its extended algorithms by using our metrics. We found in the feature extraction of image samples that FPCA really has better generalization performance than existing PCA and its extended algorithms under the condition of large sample size. The results confirmed theoretical conclusion of FPCA and improved relevant experimental study.

Abstract: In the function structure theory of multi-logic, decision on Sheffer function is an important role. It contains structure and decision of full multi-logic and partial multi-logic. Its decision is closely related to decision of completeness of function which can be done by deciding the minimal covering of full multi-logic and partial-logic. By theory of completeness of partial multi-logic, we prove that function of one simple separable ralation is not minimal covering of P^*_K under the condition of m=2, σ=e .

Abstract: Usually there is no a uniform model to the choice of SVMs kernel function and its parameters for SVM. This paper presents a bilinear grid search method for the purpose of getting the parameter of SVM with RBF kernel, with the approach of combining grid search with bilinear search. Experiment results show that the proposed bilinear grid search has combined both the advantage of moderate training quantity by the bilinear search and of high predict accuracy by the grid search.

Abstract: the workflow process model is actually the computational description of the business process, which includes all the required information in the process, such as the conditions of the beginning and ending in the process every task item in the business process the information transferring rules between every task and the required application tools or programs and so on. This paper first introduces the standard workflow reference model, then it proposes the meta-model of the workflow, and finally it analyzes the operating process of the workflow cases.

Abstract: Along with the development of the information technology in manufacturing, how to promise the smooth information flow between the CAD and CAPP becomes more and more crucial. The 3D integrated system was constructed by means of the second developed embedded model on commercially available 3D platform. Firstly, all functional models are constructed under the framework of the system, among which the information flow is smooth by the developed interfaces. Secondly, the processes information framework was constructed, by which the static information on fabricating factors and the dynamic information on process planning is hierarchically organized. Finally, the mapping relationship was constructed by means of the parametric extraction technology. On the basis of the mapping results, fabricating schemes were generated by reasoning technology.

Abstract: An active knowledge aided system for bearing design was created for resolving the problems such as complexity of automobile bearing design and finite element analysis, high knowledge requirements for designers when using design software and long process of study and lack of experience of young mechanic designers. The system can provide knowledge to young engineers by judging their knowledge level and defects in a way of first pull and then push, reduce study burden of designers, and help them complete design tasks rapidly.