Search

This paper described new working mode of Power Factor Corrector (PFC), called Boundary Continuous Mode (BCM); studied the design parameters of the critical components for the BCM-PFC in the boost topology; proposed a method and a tool for designing an L6562A-based BCM-PFC Boost Converter. The method and tool was verified on an evaluation board emulating a PFC boost converter with an 80W output power, 400Vdc output voltage and a wide range main input from 85Vac to 264Vac; and it can be easily adapted for applications with higher output power around 400W.

It is widely considered that standardization is an important means for information processing£¬exchanging£¬managing and clearing up technical bulwark more effectively. The paper studies the theoretics and methods about the E-HUB platform. After analyze business environment in Southwest China, a generic conceptual framework will be developed and a prototype implementation of the generic concepts will be benchmarked in system design of manufacturing information system. The small and medium-sized enterprises (SMEs) can solve their complex project tasks and participate in projects far exceeding their individual capabilities.

Mobile e-commerce systems are the big trend of international economy and social development now days, and also the key process of industry upgrade, industrialization and modernization in our country. Mobile e-commerce systems are considered as the backbone of the manufacturing industry in China, Vulnerabilities in web applications continue to be the most frequently discovered security problem. This article illustrates a trusted operating systems how to provide a flexible solution to the problem of application for e-commerce. With the help of Chinese Wall, web services are becoming popular in Web applications. In the end, we present strategies for e-commerce application: trusted e-commerce module.

This paper made an overview for the development of video monitoring, and the present situation, the development of video monitoring system at home and abroad And prospects are analyzed and the research, combining with the characteristics of the Android intelligent system development and puts forward the implementing Suggestions based on the culture resources of minorities in Guizhou.

The model of service resource based on ontology is referred to meet the demand of flexibility and re-configurability of enterprise application resources. PLIB Ontology as new entrants with new business models pour into the business-to-business space, it's increasingly difficult to make sense of the landscape. The paper analyzes the current situation of business environment and business intelligence systems integration at first. Through requirement analysis, we think PLIB ontology is fit for the solution of these requirements (unambiguous description, integration automatically, variant design in real time etc). Then a generic conceptual framework will be developed and a prototype implementation of the generic concepts will be benchmarked in system design of business intelligence systems. It can help confirm the keystone of the construction of business intelligence systems and the direction of system integration.

E-Hubs as new entrants with new business models pour into the business-to-business space; it's increasingly difficult to make sense of the landscape. Electronic hubs--Internet-based intermediaries that host electronic marketplaces and mediate transactions among businesses--are generating a lot of interest. This paper provides a blueprint of the E-Hubs arena. Conceptual specification of functional system, comprising the selection of core E-Hubs services and definition of basic hosting platform of the E-Hubs realization business development plan, Conceptual framework for Manufacturing Resource Management System designs based on E-hubs.

It is widely considered that standardization is an important means for information processing, exchanging, managing and clearing up technical bulwark more effectively. The paper study the theoretics and methods about the E-HUB platform. After analyzed the issues of standardization and existing standards for sustainable development information sharing (SDIS) such as XML, RosettaNet and so on. Then provides researching results of standardization related to the heterogeneous system and critical technology base on E-HUB platform to implement the solution.

This paper analyzes the current situation of business environment and business intelligence systems integration at first. Accrediting to the frame of RosettaNet, the trend of business process integration is analyzed. Then discusses the integration of business intelligence systems based on RosettaNet frame. The conceptual development and implementation a RosettaNet frame work for business intelligence systems, a novel concept for the realization of optimize business processes. A generic conceptual framework will be developed and a prototype implementation of the generic concepts will be benchmarked in system design of business intelligence systems. It can help confirm the keystone of the construction of business intelligence systems and the direction of system integration.

Small and medium size enterprises (SMEs) are considered as the backbone of the manufacturing industry in China, and a breeding ground for business ideas for the knowledge-based economy. Flexible integration of resources and engineering collaboration of self-governed SMEs is expected to facilitate the strengthening of the competitive position of SMEs. The paper studies the theoretics and methods about the E-HUB platform. Discusses the design and implementation of the proposed platform. The E-HUB facilitates engineering collaboration and extends capabilities and capacities of its business partners with joint engineering, knowledge and manufacturing resources. Based on E-HUB, the SMEs can solve their complex engineering tasks and participate in projects far exceeding their individual capabilities.

Great Group Technology (GGT) is the combination of Group Technology and network technology. The core and basis of GGT is an open, across-industrial parts information exchange and integration platform. In this paper, we mainly discuss the realization of this platform. Firstly, the framework and working mechanism of this platform is introduced. Then the two core parts (web-based parts library and part search engine) of this platform are pointed out and analyzed. Through requirement analysis, we think PLIB ontology is fit for the solution of these requirements (unambiguous description, integration automatically, variant design in real time etc). Then a parts library information model is built. Because the function feature and structure feature is not included in PLIB ontology, an Extended PLIB Ontology library is built to solve this problem. The Extended PLIB ontology library is composed of two parts: PLIB ontology based on the PLIB standard and semantic feature ontology. At last, the realization method and farther work are introduced. Now, the prototype system has been tested in our lab.