The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The 3D model matching algorithms based on the global shape features could not give the sufficient description of the local features of the model, which makes it difficult to compare models elaborately on a local level of detail. In this paper we present a new framework which combines the global topology features and the local shape features. Firstly, we employ the Potential Field Method to acquire...
Enterprise need integrate all relevant heterogeneous databases in semantic level to react to requirements of their customers, collaborate with partners, identify and exploit new business opportunities quickly and effectively. In this context, a semantic model based Integration platform is developed to cover the whole integration process. The platform includes three modules corresponding to different...
Compared with the single direction depth element (DEXEL) model, the three direction DEXEL model could express a shape more precisely. This paper gives a dexelization algorithm of polyhedrons. This algorithm could transform a polyhedron into its three direction DEXEL model. Under the same three direction DEXEL space, by Boolean operations such as union, intersection, and subtraction, complex DEXEL...
Enterprise need integrate all relevant heterogeneous databases in semantic level to react to requirements of their customers, collaborate with partners, identify and exploit new business opportunities quickly and effectively. In this context, a semantic model based Integration platform is developed to cover the whole integration process. The platform includes three modules corresponding to different...
Compared with the single direction depth element (DEXEL) model, the three direction DEXEL model could express a shape more precisely. This paper gives a dexelization algorithm of polyhedrons. This algorithm could transform a polyhedron into its three direction DEXEL model. Under the same three direction DEXEL space, by Boolean operations such as union, intersection, and subtraction, complex DEXEL...
The purpose of reverse engineering is to convert a large point cloud into a CAD model. In reverse engineering, extracting geometric parameters of quadric surfaces from measured data is an important problem. It helps to understand the designer's intent, and improves accuracy and efficiency of parts reconstruction. In this paper, an improved genetic algorithm with real valued genes and an adaptive mutation...
Nowadays, swirling around most businesses is not structure information but semi-structure information, such as spreadsheets, and documents created by an individual or company. To fully manage and use semi-structure information as structure information does, we propose a technology based on the bi-directional integration between XML and RDB in a three-tiered structure. Through undertaking research...
Rapid growth and spread of information technology especially network technology enables people to use computers more naturally and easily and as a result, more design data and information leave in designers' desktops. Recent advances in grid, semantic Web, P2P and Web services have revolutionized the way we communicate and collaborate and also make it possible to integrate desktop data. Undertaking...
A discretizing probabilistic model for predicting crack nucleation life is proposed in the paper. In the model, the mechanisms of crack nucleation and microstructural parameters of materials are taken into account. Based on the model, a discretizing approach for predicting the mean value, standard deviation and coefficient of variation of the fatigue crack nucleation life has been developed. And the...
Building ontology from scratch need identify the basic concepts of application domain. In terms of database integration, draft concepts can be directly captured by processing schemas of databases. In this context, we present an automatic approach based on matching and clustering of relational schema columns to capture concepts from relative databases. By combining three individual name matchers following...
Building ontology from scratch need identify the basic concepts of application domain. In terms of database integration, draft concepts can be directly captured by processing schemas of databases. In this context, we present an automatic approach based on matching and clustering of relational schema columns to capture concepts from relative databases. By combining three individual name matchers following...
Although a lot of previous work on schema matching has developed many partial automatic matches for specific application domains, combining multiple match techniques enables achieving high accuracy for a large variety of match circumstances. In this context, we present a schema-based element matching approach that concatenates linguistic-based matchers and a constraint-based matcher. We propose a...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.