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Chinese Scholars Talk on the Exchange Rate of the Renminbi
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《China's Foreign Trade》 1999年第1期18-21,共4页
关键词 TALK Chinese Scholars Talk on the exchange Rate of the Renminbi
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Empirical Human Rights Studies Contribute to Building a Society Under the Rule of Law——Summary of the Fifth National Meeting for the Exchange of Work Experience Among Human Rights Research Institutions
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作者 STAFF REPORTER 《The Journal of Human Rights》 2014年第1期35-37,共3页
From Nov. 5 to 6, 2013, the China Society for Human Rights Studies (CSHRS)held the Fifth National Meeting for the Exchange of Work Experience Among Human Rights Research Institutions at Wuhan University. More than 1... From Nov. 5 to 6, 2013, the China Society for Human Rights Studies (CSHRS)held the Fifth National Meeting for the Exchange of Work Experience Among Human Rights Research Institutions at Wuhan University. More than 100 experts and scholars, focusing on empirical human rights studies and their contribution to building a society based on the rule of law, shared their work experience and discussed effective strategies. CSHRS President Luo Haocai, who served as vice chairman of the 10th National Committee of the Chinese People's Political Consultative Conference, 展开更多
关键词 Empirical Human Rights Studies Contribute to Building a Society Under the Rule of Law Summary of the Fifth National Meeting for the exchange of Work Experience Among Human Rights Research Institutions Work
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Types of the jump phenomenon in the angular dependence of the noncollinear exchange bias
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作者 杨红萍 白宇浩 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第6期524-533,共10页
Based on the principle of minimal energy and the coherent rotation model, two types of the jump phenomena, complete and incomplete jump phenomenon, are proved to exist in the angular dependence of the exchange bias wi... Based on the principle of minimal energy and the coherent rotation model, two types of the jump phenomena, complete and incomplete jump phenomenon, are proved to exist in the angular dependence of the exchange bias with noncollinear unidirectional and uniaxial anisotropies. It is found that the transition between complete and incomplete jump phenomena occurs on condition that the exchange-coupling constant exceeds a critical value. Additionally, two different modes of the magnetization rotation, the whole-plane rotation, and the half-plane rotation are present in the magnetization reversal process, and they are dependent on the direction of the external field. Furthermore, the equations of the critical angle, at which orientation the exchange bias field reaches a maximum value and the coercivity disappears, are also derived in this paper. The numerical calculations in this paper are consistent with the relevant experimental observations, indicating that our method to study the angular dependence of the exchange bias as well as the magnetization reversal behaviors is valid. Our discussion about the jump phenomenon, the critical angle, and the modes of the magnetization reversal can explain the observed differences in results between different experiments. 展开更多
关键词 jump phenomenon angular dependence of the exchange bias mode of the magnetization reversal critical angle
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The Future of the Exchange Rate Regime in China
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《World Economy & China》 2000年第3期16-25,共10页
关键词 the Future of the exchange Rate Regime in China IMF
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XML-based Data Processing in Network Supported Collaborative Design 被引量:2
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作者 Qi Wang Zhong-Wei Ren Zhong-Feng Guo 《International Journal of Automation and computing》 EI 2010年第3期330-335,共6页
In the course of network supported collaborative design, the data processing plays a very vital role. Much effort has been spent in this area, and many kinds of approaches have been proposed. Based on the correlative ... In the course of network supported collaborative design, the data processing plays a very vital role. Much effort has been spent in this area, and many kinds of approaches have been proposed. Based on the correlative materials, this paper presents extensible markup language (XML) based strategy for several important problems of data processing in network supported collaborative design, such as the representation of standard for the exchange of product model data (STEP) with XML in the product information expression and the management of XML documents using relational database. The paper gives a detailed exposition on how to clarify the mapping between XML structure and the relationship database structure and how XML-QL queries can be translated into structured query language (SQL) queries. Finally, the structure of data processing system based on XML is presented. 展开更多
关键词 Extensible markup language (XML) network supported collaborative design standard for the exchange of product model data (STEP) data analysis data processing relational database
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A Multi-layer Information Integration Platform for Chemical Process Operation Systems 被引量:1
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作者 钱宇 李荷华 李秀喜 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2004年第5期668-672,共5页
In the process industry, automation and process control systems are widely implemented, information integration is however far away from satisfactory. It remains a hard job for senior managers to make decisions based ... In the process industry, automation and process control systems are widely implemented, information integration is however far away from satisfactory. It remains a hard job for senior managers to make decisions based on the plant-wide real-time integrated information. This paper proposes a multi-layer information integration platform. In the data integration level, the standard for the exchange of product (STEP) and the extensible markup language (XML) are used to unify these data of the chemical process. In the model integration level, the models are integrated by using the neutral model repository and CAPE-OPEN. In the integration of process task, the common object request broker architecture (CORBA) is used as the communication mediator. The XML is taken as the data standard. A uniform information platform is thus constructed and realized. The proposed information integration platform is satisfactorily implemented to solve the Tennessee Eastman (TE) problem. 展开更多
关键词 information integration process operation system neutral model standardfor the exchange of product
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Non-traditional Dialogues between Thoughts
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作者 Konul Bunyadzade 《Journal of Philosophy Study》 2013年第7期619-626,共8页
The article considers a new and non-traditional form of dialogue. Calling it a "spiritual dialogue" or the intersection of thoughts, the author comments on this type of dialogue as a basis for interreligious, interc... The article considers a new and non-traditional form of dialogue. Calling it a "spiritual dialogue" or the intersection of thoughts, the author comments on this type of dialogue as a basis for interreligious, intercultural and intercivilizational dialogues, seeing it as their main motive force. In this study, firstly, traditional and non-traditional dialogues are compared and indicate their specific features on the basis of the work of the Eastern and the West thinkers. Then, the nontraditional dialogue has been considered in the context of modern information chaos. The last section of the article is devoted to the analysis of the basic principles of non-traditional dialogue, emphasizing the role of language. The conclusion of the article once again highlights the importance of non-traditional dialogue that starts in the inner world of the human being, which gives him a possibility to observe an object from two viewpoints and merge and these different views in the mind. 展开更多
关键词 non-traditional dialogue MONOLOGUE East-West the crossing of thoughts the exchange of ideas information chaos spiritual dialogue
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Morita Context and Morita—Like Equivalence for the xst—Rings 被引量:1
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作者 BaiYuOUYANG WenTingTONG 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2003年第2期371-380,共10页
The notion of the xst-rings was introduced by García and Marín [5] in 1999. In this paper, we consider Morita context, Morita-like equivalence and the exchange property for the xst-rings. The results of the ... The notion of the xst-rings was introduced by García and Marín [5] in 1999. In this paper, we consider Morita context, Morita-like equivalence and the exchange property for the xst-rings. The results of the first Morita theorem are generalized to the xst-rings. So we obtain an important Morita-like equivalence of the xst-rings, from which, as an immediate consequence, we deduce the main result of Xu-Shum-Turner [4] and the standard Morita equivalence, A ~ Mn(A), for a unital ring A. Moreover, we describe the properties of those well-known intermediate matrix rings, and show that the exchange property of a unital ring A coincides with the one for any Mn(A) as well as any intermediate matrix ring sitting between FM&(A) and FC&(A), which is an extension of a well-known result obtained by Nicholson [7]. 展开更多
关键词 Morita context MORITA like equivalence the exchange property
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STEP AP 242 Managed Model-based 3D Engineering:An Application Towards the Automation of Fixture Planning
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作者 Remil George Thomas Deepak Lawrence K. Manu R. 《International Journal of Automation and computing》 EI CSCD 2021年第5期731-746,共16页
Fixture design and planning is one of the most important manufacturing activities, playing a pivotal role in deciding the lead time for product development. Fixture design, which affects the part-quality in terms of g... Fixture design and planning is one of the most important manufacturing activities, playing a pivotal role in deciding the lead time for product development. Fixture design, which affects the part-quality in terms of geometric accuracy and surface finish, can be enhanced by using the product manufacturing information(PMI) stored in the neutral standard for the exchange of product model data(STEP) file, thereby integrating design and manufacturing. The present paper proposes a unique fixture design approach, to extract the geometry information from STEP application protocol(AP) 242 files of computer aided design(CAD) models, for providing automatic suggestions of locator positions and clamping surfaces. Automatic feature extraction software "FiXplan", developed using the programming language C#, is used to extract the part feature, dimension and geometry information. The information from the STEP AP 242 file is deduced using geometric reasoning techniques, which in turn is utilized for fixture planning. The developed software is observed to be adept in identifying the primary, secondary, and tertiary locating faces and locator position configurations of prismatic components. Structural analysis of the prismatic part under different locator positions was performed using commercial finite element method software, ABAQUS, and the optimized locator position was identified on the basis of minimum deformation of the workpiece.The area-ratio(base locator enclosed area(%)/work piece base area(%)) for the ideal locator configuration was observed as 33%. Experiments were conducted on a prismatic workpiece using a specially designed fixture, for different locator configurations. The surface roughness and waviness of the machined surfaces were analysed using an Alicona non-contact optical profilometer. The best surface characteristics were obtained for the surface machined under the ideal locator positions having an area-ratio of 33%, thus validating the predicted numerical results. The efficiency, capability and applicability of the developed software is demonstrated for the finishing operation of a sensor cover – a typical prismatic component having applications in the naval industry, under different locator configurations.The best results were obtained under the proposed ideal locator configuration of area-ratio 33%. 展开更多
关键词 Standard for the exchange of product model data(STEP)application protocol(AP)242 product manufacturing information computer-aided fixture design computer aided design(CAD)/computer aided manufacturing(CAM) AUTOMATION computer integrated manufacturing 3D surface roughness
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STEP-NC Based High-level Machining Simulations Integrated with CAD/CAPP/CAM 被引量:4
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作者 Yu Zhang 1 Xiao-Lan Bai 1 Xun Xu 2 Yong-Xian Liu 1 1 School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110004,China 2 School of Engineering,University of Auckland,Auckland 1010,New Zealand 《International Journal of Automation and computing》 EI 2012年第5期506-517,共12页
With the development of manufacturing,numerical control(NC) machining simulation has become a modern tool to obtain safe and reliable machining operations.Although some research and commercial software about NC machin... With the development of manufacturing,numerical control(NC) machining simulation has become a modern tool to obtain safe and reliable machining operations.Although some research and commercial software about NC machining simulations is available,most of them is oriented for G&M code.It is a low-level data model for computer numerical control(CNC),which has inherent drawbacks such as incomplete data and lack of accuracy.These limitations hinder the development of a real simulation system.Whereas,standard for the exchange of product data-compliant numerical control(STEP-NC) is a new and high-level data model for CNC.It provides rich information for CNC machine tools,which creates the condition for an informative and real simulation.Therefore,this paper proposes STEP-NC based high-level NC machining simulations solution integrated with computer-aided design/computeraided process planning/computer-aided manufacturing(CAD/CAPP/CAM).It turned out that the research provides a better informed simulation environment and promotes the development of modern manufacturing. 展开更多
关键词 Standard for the exchange of product data-compliant numerical control(STEP-NC) numerical control(NC) machining machining simulation IDEF0 method ISO 6983
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STEP-based Feature Recognition System for B-spline Surface Features 被引量:3
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作者 Bitla Venu Venkateswara Rao Komma Deepanshu Srivastava 《International Journal of Automation and computing》 EI CSCD 2018年第4期500-512,共13页
The geometrical and topological information of 3D computer aided design (CAD) models should be represented as a neut- ral format file to exchange the data between different CAD systems. Exchange of 3D CAD model data... The geometrical and topological information of 3D computer aided design (CAD) models should be represented as a neut- ral format file to exchange the data between different CAD systems. Exchange of 3D CAD model data implies that the companies must exchange complete information about their products, all the way from design, manufacturing to inspection and shipping. This informa- tion should be available to each relevant partner over the entire life cycle of the product. This led to the development of an international standard organization (ISO) neutral format file named as standard for the exchange of product model data (STEP). It has been ob- served from the literature, the feature recognition systems developed were identified as planar, cylindrical, conical and to some extent spherical and toroidal surfaces. The advanced surface features such as B-spline and its subtypes are not identified. Therefore, in this work, a STEP-based feature recognition system is developed to recognize t--spline surface features and its sub-types from the 3D CAD model represented in AP203 neutral file format. The developed feature recognition system is implemented in Java programming language and the product model data represented in STEP AP203 format is interpreted through Java standard data access interface (JSDAI). The developed system could recognize B-spline surface features such as B-Spline surface with knots, quasi uniform surface, uniform surface, rational surface and Bezier surface. The application of extracted B-spline surface features information is discussed with reference to the toolpath generation for STEP-NC (STEP AP238). 展开更多
关键词 Feature recognition 3D computer aided design(CAD)model geometrical information standard for the exchange ofproduct model data(STEP)AP203 Java standard data access interface(JSDAI).
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Study on Distributed Knowledge Information System for Product Design 被引量:1
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作者 周受钦 钱桂生 +1 位作者 凌卫青 谢友柏 《Journal of Computer Science & Technology》 SCIE EI CSCD 2001年第5期465-473,共9页
To overcome the limitations of commercial CAD and handbook form of knowledge expression, the Distributed Knowledge Information System (DKIS) for product design is proposed. The structure of DKIS and the key issues in... To overcome the limitations of commercial CAD and handbook form of knowledge expression, the Distributed Knowledge Information System (DKIS) for product design is proposed. The structure of DKIS and the key issues in its implementation are introduced; the method of knowledge store and transfer of DKIS is discussed. The mechanism of knowledge representation, acquisition and utilization, based on Internet network, is achieved. Based on the concept of function driven, integrated Artificial Neural Networks and Active Server Pages techniques, transplanting the trained ANN into DKIS system, a new method for retrieving knowledge in DKIS over Internet is achieved. Finally, a prototype of DKIS is developed to demonstrate the feasibility of the structure and constructional method of DKIS. The work pro-vides a scheme for speed knowledge acquisition and shortens the cycle of product development. 展开更多
关键词 INTEGRATION INTERNET STEP (the Standard for the exchange of Product Model Data) DATABASE knowledge acquisition
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Feature Analysis of STEP Application Protocol and its Application
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作者 李兵 孟明辰 +1 位作者 李振宏 童秉枢 《Tsinghua Science and Technology》 SCIE EI CAS 1999年第2期31-34,共4页
This paper uses semantic data modelling and CAD/CAPP/CAM integration to analyze the features defined in the STEP AP214, its characteristics of definition and distribution, and its influence on the complexity of CAD/CA... This paper uses semantic data modelling and CAD/CAPP/CAM integration to analyze the features defined in the STEP AP214, its characteristics of definition and distribution, and its influence on the complexity of CAD/CAPP/CAM application integration. A framework is developed for applications of CAD/CAPP/CAM integration based on the STEP to reduce the complexity of integration implementation. Two application program interfaces (API), namely, application protocol API and application API, are developed. The frameworks hierarchy structure and the application program interfaces between the layers make the integration of applications easier. 展开更多
关键词 standard for the exchange of product model data integration framework FEATURE application program interface CAD/CAPP/CAM integration
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