共查询到20条相似文献，搜索用时 15 毫秒
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In this paper, a product model in conceptual design, Domain Structure Template, is proposed, which combines the functional domain and the physical domain with the behaviour domain. Seven types of primary mappings units connecting functions, behaviours and carriers during conceptual design process are identified according to the characteristics of the conceptual design of mechanical products.Based on these seven primary mappings, a hierarchical functional reasoning framework characterizing the process of conceptual design is presented. A case study for the conceptual design of industry sewing machines with chain-stitch is described to demonstrate the product modelling and the scheme generation based on the presented model. 相似文献
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Darra Pace Diane Schwartz 《美中教育评论》2008,5(12):20-26
The inclusion of students with disabilities at the university is a relatively new occurrence in the field of special education. Although legislation in the United States has supported the acceptance of students with disabilities at the post-secondary level, it has only provided minimal support with the emphasis on the learner rather than the curriculum. Now we are looking for multiple ways for students to access learning and demonstrate mastery. Universal Design for Learning （UDL） is currently seen as a means to reconceptionalize curriculum. This study examines the experience of four professors and their effort to use a Classroom Performance System （CPS） as part of reformatting their courses using UDL. The Center for Applied Special Technology, CAST （2001） states that the goal of Universal Design for Learning is to develop teaching methods that enable all students with diverse learning needs, including those with disabilities and cultural differences, to have equal access to classroom curriculum. This paradigm shift echoes the move in special education from a deficit model to a minority rights model put forward by Hahn （1989）, and which is the basis of inclusive educational philosophy. Together inclusion and UDL create learning environments that strive to serve all students. This research describes the implementation of clickers as part of the CPS program in college courses in a special education teacher preparation program. The case study demonstrates how technology can provide access for all learners with positive outcomes such as increased participation and application of knowledge. It also illustrates some of the difficulties in making this pedagogical paradigm shift particularly in the use of technology, and the value of overcoming the existing barriers in place. 相似文献
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Following researches on the knowledge-based product design, product modeling based on knowledge fusion is studied in a virtual environment. Knowledge fusion is the energy sources of product innovation designs. Because a knowledge representation method is the main content of knowledge fusion, production rule way, semantic network, predicate, object-oriented and case-based representations are discussed. Using agents with object-oriented method, the knowledge can be represented as a set. The product knowledge set is divided into two subset: text knowledge and knowledge of engineering graphics that is a different form. Manipulation of the subset knowledge and fusion method is described. The paper also describes a six-tuple function in an agent data structure. A virtual environment computation model is proposed, and a practical example given. 相似文献
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This paper describes some of the principles for building a freely available web-based university with open content. The ＂tutor-web＂ is an international project for web-assisted education, including such free and open access. This project was initiated by the University of Iceland in partnership with many universities around the world, among them the University of Craiova, Romania. The aim of this paper is to present this project, to point out its specificity and to arouse interest for collaboration in the project, which uses http：//tutor-web.net as the home location. 相似文献
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Dorothy Cynthia Nampota 《美中教育评论》2009,6(8):30-37
Due to the increasing number of children and youth dropping out of school, the Malawi government came up with a strategy to address their learning needs through non-formal means in its EFA plan. This resulted in the introduction of a three-year cycle pilot programme known as Complementary Basic Education （CBE）. Funded by GTZ, a German funding agency, the CBE programme has since entered its second year of implementation. This paper reports an evaluation study of the CBE programme so far, with a view of highlighting some of the challenges affecting its implementation. Using a qualitative methodology, the study found that the programme is in many respects, potentially beneficial to various groups of stakeholders including learners, their parents and the community in general. However, the study finds that the major setback in achieving this potential lies in the differences in perception of what should count as curriculum for the CBE programme between providers and beneficiaries. There is a mismatch between ＂needs＂ as perceived by learners and community members on the one hand, and ＂needs＂ as perceived by the providers on the other hand. The paper discusses some of the issues that the providers need to respond to if CBE implementation is going to be beneficial to the livelihood needs of the learners and the immediate community. 相似文献
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Language stood in the foreground of George Orwell’s social and political thinking. Language is not only a vehicle for transmitting ideas, but also a product originating from social and political interactions. This paper examines the language, particularly the abuse of language, in the context of politics presented in Nineteen Eighty-Four, so as to find out George Orwell’s view of language: language as a manipulated tool to control people’s minds. 相似文献
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Mun Fie Tsoi Ngoh Khang Goh 《美中教育评论》2008,5(7):29-35
The development of e-learning materials for teaching and learning often needs to be guided by appropriate educational theories or models. As such, this paper provides alternative e-learning design pedagogy, the TSOI Hybrid Learning Model as a pedagogic model for the design of e-learning cognitively in science and chemistry education. This model is hybridized from the Piagetian science learning cycle model and the Kolb＇s experiential learning cycle. The TSOI Hybrid Learning Model represents learning as a cyclical cognitive process of four phases： translating, sculpting, operationalizing and integrating. A major feature is to promote cognitive processing in the learner for active learning proceeding from inductive to deductive. Design specificity in science and chemistry education is illustrated in terms of instructional storyboarding for the developed research-based e-learning product. Learners＇ cognitive ability for example positive concept achievement will be addressed as part of the research data collected. 相似文献
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Product data management (PDM) is a unique technique that integrates and manages all applications, information and processes defining a product from design to manufacture, and to end-user support. However, exploration of valuable information and knowledge from the PDM system has become a key in improvement of efficiency and implementation of knowledge management in an enterprise. This paper introduces a data mining prototype system model based on PDM, and emphasizes some important techniques such as design of the prototype system framework, methods of data selection and integration of data mining prototype system and PDM. The model basically solves the problem of functional losses in mining and analyzing data in PDM. Application of data mining to PDM is meaningful to the ideas and techniques of PDM, and to the rapid development of data mining application itself. Also, it is useful in improving development and usage of enterprise databases. 相似文献
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In product concept design, not only designers with professional CAD skills, but also final customers take part in the design and evaluation of product shape styling. Because customers usually lack surface modelling background and are not familiar with concrete operations of commercial CAD systems, it is difficult for them to express their change intentions of product shape through professional CAD tools if they are not satisfied with the current shape design. This paper puts forward a method for creating, dragging and manipulating constraint and load represented in form of icon entity in interactive sculpting of product shape in virtual environment. The method supports customers manipulation of sculpting constraints or loads on sculpting shapes in virtual reality interaction to control the deformation of product shape. Constraints management based on icon entity is similar to spline lofting operation that is familiar to engineers, so users do not need to know surface details or have any professional knowledge of surface modelling, by only using their physical and engineering experience, they can manipulate the sculpting of product shape intuitively. 相似文献
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The selection of context is not random but limited by linguistic communicators’cognitive environment.Sperber &Wilson propose a more persuasive inferential model on the basis of Grice’s theory.They think language communication is a de ductive and inferential process in which the communicators deal with the information in the context,a set of assumptions,and finally infer the meaning.Since a discourse is the work of language and the product of the process of linguistic communication,the inferential model will also adapt to the discourse analysis.With the inferential model as its basic analyzing framework,this paper puts discourse in a dynamic communicative process to investigate how the discourse receiver selects the context to make the com munication succeed. 相似文献
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The goal of teaching English speaking is to improve students’ communicative efficiency, or make students speak the target language clearly, coherently, accurately and fluently (Xu, 2005). However, in China, a number of students in an English speaking class tend to be passive and reluctant to speak out or be singled out publicly mainly due to their high anxiety, which, of course, becomes a significant constraint on improving their English proficiency. Therefore, how to create a relaxed atmosphere with a sense of security in the English speaking class to alleviate Chinese learners’ anxiety and to provide them with as many opportunities as possible to practice speaking English and improve their English proficiency is one of the central tasks for language teachers.his paper will firstly outline my teaching context in China in physical, pedagogical, institutional and personal aspects. This will be followed by the definition and classification of language learning anxiety, and the analysis of various factors contributing to foreign language learners’ anxiety as well as some suggestions of how to reduce the learners’ anxiety in the oral class according to the current literature. Finally, some applications will be presented in my teaching context in the hope of decreasing Chinese students’ anxiety to enhance their English speaking proficiency. 相似文献
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A dynamic velocity feed-forward compensation control (DVFCC) approach with RBF neural network (RBF-NN) dynamic model identification was presented for the adaptive trajectory tracking of industrial robots.The proposed control approach combined the advantages of traditional feedback closed-loop position control and computed torque control based on inverse dynamic model.The feed-forward compensator used a nominal robot dynamics as accurate dynamic model and on-line identification with RBF-NN as uncertain part to improve dynamic modeling accuracy.The proposed compensation was applied as velocity feed-forward by an inverse velocity controller that can convert torque signal into velocity in the standard industrial controller.Then,the need for a torque control interface was avoided in the real-time dynamic control of industrial robot.The simulations and experiments were carried out on a gas cutting manipulator.The results show that the proposed control approach can reduce steady-state error,suppress overshoot and enhance tracking accuracy and efficiency in joint space and Cartesian space,especially under highspeed condition. 相似文献
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LIU Dan 《Frontiers of Education in China》2020,15(3):453
This paper explores how the concept of social capital developed by Bourdieu and Coleman as well as the Chinese concept of guanxi (关系) or relationships facilitates students’ access to postgraduate education in a case study of a university in southeast China. The study comprises an initial survey of 381 first-year postgraduate students and a series of interviews with 30 participants. Social capital and guanxi inform analysis of the data. The results reveal that students from different social backgrounds employ different forms of social capital and guanxi networks in their decision-making about postgraduate education. They contribute to conceptualizations of how social capital is generated through guanxi in the Chinese educational context. 相似文献
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XIE Fang JIANG Xue-mei 《美中教育评论》2007,4(9):10-14
This paper makes a study of error analysis and its implementation in the EFL （English as Foreign Language） classroom teaching. It starts by giving a systematic review of the concepts and theories concerning EA （Error Analysis）, the various reasons causing errors are comprehensively explored. The author proposes that teachers should employ different and flexible error treatment strategies in accordance with the teaching objectives, students＇ linguistic competence, their affective factors and the effectiveness of the error correction. 相似文献