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Hirpa G. Lemu 《上海大学学报(英文版)》2014,(4):289-294
Manufacturing systems of the future highly demand that the product data are built into the product model, and smooth data transfer to other computer-aided technologies are enabled. Depending on the type of the manufacturing system, it is envisaged that virtual engi- neering （VE） technologies play a significant role in inte- grating the computer-based technologies involved in the product＇s life cycle. Simulations in a virtual world and exchange of real-time product or design data are among the benefits for today＇s global oriented manufacturing busi- ness. To highlight the significance of design as carrier of product data and the key role played by VE technologies to inter-link design, manufacturing and associated compo- nents, this paper presents an overview and analysis of the state-of-the-art VE technologies to indicate potential applications and future research directions. 相似文献
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Emrah Arica Daryl J.Powell 《上海大学学报(英文版)》2014,(2):158-164
This paper aims to develop a conceptual framework for real-time production planning and control（PPC）.Firstly,we discuss the most prominently applied contemporary information and communication technologies for PPC.Enterprise resource planning（ERP） systems that integrate the value chain in an enterprise,manufacturing execution systems that manage and control the production on shopfloor,and advanced planning and scheduling（APS）systems that develop solutions for complex planning problems are the planning and control systems that have been analyzed.We emphasize the application of radio frequency identification as the most advanced and promising emerging real-time data capture technology that is currently available to manufacturers.Having analyzed the features and shortcomings of the individual systems perse,and by considering the advantages that may be realized through effective integration of these otherwise discrete systems,we propose a framework for real-time PPC. 相似文献
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Geographic information systems(GIS)are a widely used tool in urban planning and management.More and more cities and deecision-makers require its attributes of promptness,precision and visualization.But the application of GIS in urban environmental management is still a new field and relevant researches are getting on tardily.As a subsystem of GIS,an urban environmental management geographic information system(UEMGIS0should be a complex multi-discipline and multi-objective tool to perform quantitative multi-dimension analysis and to transfer the results into an expression legible to an ordinary user.It should be a dynamic system of prompt functions based on upgradable databases,and be composed of many subsystems respectively specialized in items about water,air,waste and noise as well as relative standards and regulations.However, existing UEMGISs mostly rely on the basic GIS too much to design the actual requirements of applications and managements in themselves,and the unavailability of sufficient fundamental data has retarded their improvement.In the design of a UEMGIS,the standardization of data classification should be taken into consideration to make the data exchangeable and shareable among its subsystems and within every subsystemj,and the applicable error limits for input data should be defined in accordance with the user s required precision of data out.Data acquisition can be easy and quick if remote sensing,global positioning system(GPS)and other technologies are combined with GIS,Rapidly progressing information fechnologies have been giving a bright prospect for the melioration of UEMGIS that will have great potential and wide application in environmental conservation. 相似文献
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An integrated intelligent management is presented to help organizations manage many heterogeneous resources in their information system. A general architecture of management for information system reliability is proposed, and the architecture from two aspects, process model and hierarchical model, described. Data mining techniques are used in data analysis. A data analysis system applicable to real-time data analysis is developed by improved data mining on the critical processes. The framework of the integrated management for information system reliability based on real-time data mining is illustrated, and the development of integrated and intelligent management of information system discussed. 相似文献
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Sebnem Kandil lngec Serap Aga Mina Sahingoz 《美中教育评论》2014,(12):823-841
This study aims to measure girls＇ technical and vocational high school students＇ information and communication technology （ICT） skills and to investigate these in terms of different variables. The singular and relational survey model was used in this study. The sample composed of 119 technical and vocational high school students. The data were collected through a paper-based survey composed of two parts. In the first part of the survey, there are 15 items about personal information and demographic information about the participating students. In the second part, there is a scale about ICT skills. The data were analyzed by Statistical Package for Social Sciences （SPSS） Version 21.0 by means of percent, frequency, mean, mode, median, Mann-Whitney U, and Kruskall-Wallis test. The results showed that there were no significant differences in the technical and vocational high school students＇ ICT skills with respect to gender, class level, experience in the use of computers, frequency of using the Internet, working style, learning style, and motivation style. As for the ＂number of aim using the Internet＂ variable, a significant difference in the ICT skills scale was observed. 相似文献
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With the rapid development of highway construction and formation of the highway network in China,the man- agement of pavement maintenance and rehabilitation （MR） activities has become important.In this paper,four discrete optimization models are proposed for different parties involved in the management system： government,highway agent,con- tractor and the common users.These four optimal decision models are formulated as linear integer programming problems with binary decision variables.The objective function and constraints are based on the pavement performance and prediction model using the pavement condition index （PCI）.Numerical experiments are carried out with the data from a highway system in Sichuan Province which show the feasibility and effectiveness of the proposed models. 相似文献
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陆静平 《重庆大学学报(英文版)》2003,2(1)
1. Introduction Product data management (PDM) is a technology helping workgroup, department, division, or enterprise manage product data and development process throughout the product life cycle, from inception, through development and production to dispatch and beyond. As an integration tool connecting many different areas, PDM manages product data throughout the enterprise, ensuring that right information is available to the right person at the right time and in the right form. Web-based … 相似文献
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Wind turbines（WTs） are quite expensive pieces of equipment in power industry. Maintenance and repair is a critical activity which also consumes lots of time and effort, hence making it a costly affair. Carefully planning the maintenance based upon condition of the equipment would make the process reasonable. Mostly the WTs are equipped with some kind of condition monitoring device/system, which provides the information about the device to the central data base i.e., supervisory control and data acquisition（SCADA） data base. These devices/systems make use of data processing techniques/methods in order to detect and predict faults. The information provided by condition monitoring equipments keeps on recoding in the SCADA data base. This paper dwells upon the techniques/methods/algorithms developed, to carry out diagnosis and prognosis of the faults, based upon SCADA data.Subsequently data driven approaching for SCADA data interpretation has been reviewed and an artificial intelligence（AI） based framework for fault diagnosis and prognosis of WTs using SCADA data is proposed. 相似文献
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The purpose of this study was to explore what salient characteristics can be found in some university teachers＇ approaches to teaching in Finland, Japan and India, and in what ways university teachers in Finland, India and Japan use ICTs （information and communication technologies） in their own teaching. Furthermore, this study aimed to investigate what ICT applications these same teachers use in their teaching. The data were collected via an electronic survey and interviews. The participants （N=21） were university teachers from Finland （N=8）, Japan （N=I0） and India （N=3）. Their approaches to teaching were explored by applying the ATI （approaches to teaching inventory） and its modified version focusing on the use of ICTs in teaching. The study reported in this paper was a pilot study, thus the results are based on the limited number of respondents. The ATI and ATI ICT subscales and ICT inventory applied in this study have been confirmed to be valid. The university teachers in Japan and Finland differed in their approaches to teaching： The Finnish teachers scored higher on the CCSF （conceptual change orientated, student-focused） approach to teaching than the Japanese teachers, while the Japanese teachers scored higher on the ITTF （information transmitting, teacher-focused） approach to teaching. Two Indian teachers were classified as having a teacher-focused approach to teaching, while the third was classified as having a student-focused approach to teaching. The teachers＇ differences in their use of ICTs related more to their disciplinary status than to their cultural background. 相似文献
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Natalia Tikhomirova 《美中教育评论》2013,(10):722-729
The Internet penetrates deeply into the everyday life due to the availability of broadband networks and mobile devices. The widespread of the Internet, along with the development of innovative services, social networking, and tools （known as Web 2.0）, gives rise to the phenomenon of the digital world. A university striving not to be ＂an ivory tower＂ should meet the needs of the ＂Net Generation＂, prepare the graduates for professional work and life in the digital world and comply with the social demand for providing lifelong learning services, especially, in the vulnerable crisis times. MESI （Moscow State University of Economics, Statistics, and lnformatics） started implementing ICTs （information and communication technologies） both in the academic and administrative processes more than 15 years ago. Today, its unified e-learning environment allows rendering educational services to students of all levels and forms （both on-campus and off-campus） and 24 × 7 × 365 support （24 hours-7 days in a week-365 days in a year）. Information system for administration comprises electronic document management systems, students＇ records, and the results of their individual learning activities for the current, interim, and final assessment. The university management system empowers centralized management of its Moscow headquarters and branches, as well as regulation of teaching/learning process. Long-term development of education in Russia is directly dependent on large-scale introduction of e-learning tools, design and implementation of new methods of organization of educational process on its base, creating and using an appropriate electronic teaching and learning practices, and new approaches to the management of the education system and educational institutions. 相似文献
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Technology development and implementation on the manufacturing arena has, throughout the years, frustrated employees over the requirement of constantly adjusting to new technologies. The employee‘s ability to learn is bounded, and thus limited. Looking at a modern production system, it is often a complicated array of technologies that have to be coordinated; or the technologies are coordinating themselves through artificial intelligence. This paper discusses the need for a holistic knowledge management approach to manufacturing,combining in-place technology with process management philosophy, in order for the firm‘s human resources to create, share, store and apply new knowledge. 相似文献
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Manufacturing technologies for making advanced micro systems have been developing in a rapid pace recently. Research progress towards nanosized structures and devices opens up a whole new horizon for miniaturized system integration. Advances in this field will have an enormous societal impact and economic benefit in areas such as information technology, energy, healthcare, and many more. There has been an enormous scientific and industrial interest in nanosized advanced technologies. The theories, tools and practices for the design, manufacturing and test of these systems are emerging. The aim of this special section is to capture some of the latest developments in integration technologies for the micro/nanosystems, with the following topics： Molecular and crystal assembly inside the carbon nanotube： encapsulation and manufacturing approachesElectroplating for high aspect ratio vias in PCB manufacturing： enhancement capabilities of acoustic streaming Local synthesis of carbon nanotubes for direct integra tion in Si microsystemsdesign considerations Waferlevel SLID bonding for MEMS encapsulation Effect of substrates and underlayer on CNT synthesis by plasma enhanced CVD These papers will briefly highlight important advance ments in manufacturing technologies of the micro/nano systems, and outline the blueprint of upcoming information technology revolution from the manufacturing point of view. 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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Rodriguez-Conde M. J. Olmos Miguelnfiez S. Perochena Gonzalez P. Herrera Garcia E. 《美中教育评论》2011,(1):98-102
Coexistence and moral education are areas of great interest in Spanish compulsory education, especially in the period that comprises between 12 and 16 years of age, named ＂compulsory secondary education＂ in Spain. With the aim to improve the processes of coexistence within this level, this research team on education from the University of Salamanca has conducted an experimental study, implementing a programme to provide moral education through ICTs （information and communication technologies）. So as to verify the positive influence of the programme, a series of means have been applied with consideration for two groups--control and experimental--and certain stages of pre- and post- test assessment. The first results denote that there has been an improvement in social-personal values in the students that were involved more actively in the programme. 相似文献
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Naswil Idris Aizirman Dim＇an 《美中教育评论》2005,2(6):1-11
Information and communication are important elements in the growth of societies; they determine the characteristics of the societies. Multipurpose Community Access Points as the lowest locus of the information receiving and transmitting, data storage and retrieval, and also as the locus for the basic interaction among members of the community will presume to contribute a lot to community development especially to improve the quality of life as the whole. E - Learning is a process of transfer of Information （knowledge）, in the sense of science, and values （social, cultural, ethical and moral values）. E-government is an application of ICT to enhance government administration. Its contents may be very complex, but it is meant to enhance public services. Due to the social and cultural implications ICT is also said as civilizing. The use of ICTs has social, economic and cultural implications to reach civil society. 相似文献
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Too many sensors and data information in structural health monitoring system raise the problem of how to realize multi-sensor information fusion. An experiment on a three-story frame structure was conducted to obtain vibration test data in 36 damage cases. A coupling neural network (NN) based on multi-sensor information fusion is proposed to achieve identification of damage occurrence, damage localization and damage quantification, respectively. First, wavelet packet transform (WPT) is used to extract features of vibration test data from structure with different damage extent. Then, data fusion is conducted by assembling feature vectors of different type sensors. Finally, three sets of coupling NN are constructed to implement decision fusion and damage identification. The results of experimental study proved the validity and feasibility of the proposed methodology. 相似文献
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Network based data management is the backup/restore mechanism used in a data storage center. This paper presents a new network based data management-NDMP-Plus, a revision of network data management protocol. Components and the working mechanism of the NDMP-Plus architecture are first discussed. Two new techniques in NDMP-Plus-virtual storage layer （VSL） and negotiation mechanism are then studied. VSL is a crucial component to achieve flexibility, and the negotiation mechanism is a key to improve performance. Furthermore, experiments are carried out to evaluate the performance of NDMP-Plus. The result suggests that NDMP-Plus has stronger flexibility and better performance than NDMP. 相似文献
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PDM（product data management)is one kind of techniques based on software and database,which integrates information and process related to products.But it is not enough to perform the complication of PDM in enterprises.Then the mechanism to harmonize all kinds of information and process in needed.The paper introduces a novel approach to implement the intelligent monitor of PDM based on MAS(multi-0agent system).It carries out the management of information and process by MC( monitor Center).The paper first puts forward the architecture of the whole system,then defines the structure of MC and its interoperation mode. 相似文献