共查询到20条相似文献，搜索用时 15 毫秒
1.
In order to retain a certain level of production in Norway,suppliers to the Norwegian maritime industry need to lower their production costs.Automation is generally an effective way of achieving this in standardized high-volume,low variety production.However,manufacturing companies in the Norwegian maritime industry typically supply capital-intensive,advanced and customized products in low volumes.In this engineer-to-order production situation,manual labor is traditionally preferred over automation.Nonetheless,such companies increasingly automate parts of their production.This paper presents a case of a supplier that has chosen to automate its welding operations,the implications and determinants of this decision. 相似文献
2.
Kevin H. Ashford-Rowe Marnie Holt 《美中教育评论》2011,(3):317-322
The ＂emerging educational institutional decision-making matrix＂ is developed to allow educational institutions to adopt a rigorous and consistent methodology of determining which of the myriad of emerging educational technologies will be the most compelling for the institution, particularly ensuring that it is the educational or pedagogical but not the technological imperative that drives the technology integration agenda. The matrix is designed to be used after some initial research into an emerging technology. Once a technology is put through the matrix, a member of options are available： （1） shelving the technology; （2） putting the technology on hold and maintaining a watching brief until the technology matures in the market; and （3） researching the product further by conducting a trial or placing in testing sandpit. After further research, the technology can be tested as a pilot to determine how well or otherwise, the technology works within the institution. If an emerging technology has more than one product associated with it, a second and third step in the matrix has been developed, and the second step assigns a rating to each of the categories within the matrix. With many products containing similar features, a third step has been developed to compare products on a feature level. 相似文献
3.
Rune Krumsvik 《美中教育评论》2008,5(5):1-16
Why is Norway, the first nation in the world defining digital literacy, as the fifth basic competence in the national curriculum？ How has epistemological and ontological issues influenced educational technology and how has this influenced discourse of educational technology in curricula which have led to today＇s ＂technology friendly curriculum＂？ These are central questions in this paper and one of the main aims within the paper is to analyze what kind of impacts, such underlying epistemological and ontological aspect, has been given in Norwegian curricula throughout the last decades in light of Koschmann＇s （1996） technological paradigms. As consequence of this, the paper will highlight the most relevant discourses about educational technology in different curricula as an entry point to ask, if the increased ICT （Information and Communication Technology） status in the new national curriculum has established new discourses and got any impact in the practice field yet. 相似文献
4.
INTRODUCTION Finishing is a kind of machining technology for greatly increasing the surface quality of a machined object while maintaining stable precision and im-proving the machining precision grade.Finishing is the last procedure for most parts and is an important manufacturing technology.Finishing can be divided into two kinds of technologies.One is traditional finishing which util-izes mechanical processes such as grinding,abrading,polishing,etc.;the other is non-traditional finishin… 相似文献
5.
The cellular manufacturing （CM） has been proved as a well-known manufacturing strategy that helps to improve manufacturing efficiency and productivity by utilizing the philosophy of group technology. Large num- ber of papers has been published in the area of design issues of CM system. Unfortunately, the issues related to acceptability of CM in Indian industries are typically not examined rigorously as technical issues. This paper pre- sents the results of a survey carded out to find the status, enabler and barrier of implementing CM system in Indian industries. 相似文献
6.
From supply-push mode to demand-pull mode, SCM systems will face four main points: (1) real time visibility that covers the whole supply chain, (2) agility for choice of supply and source, (3) response to diverse customer demands and short delivery deadlines, and (4) rapid occurrence of new products following the market trends and new designs. Component-based SCM has become a hot spot in research areas. A multi-layer framework is set up, including a database server layer, an application server layer, a kernel component layer and a user interface layer. Some function components are designed, which are optimal planning arithmetic components, controller components and evaluation indexes components, in order to suit both discrete and continuous manufacturing. This paper studies a three-dimensional SCM configuration method based on the types of enterprise, manufacturing and products, provides powerful tools for SCM system implementations, and adopts an object-oriented technology to construct component-based distributed information system to assure right time, right materials, right place, right quantity and right customers. 相似文献
7.
Chu Chao-Hsien 《东南大学学报》2008,(Z1)
To address security and privacy issues in radio frequency identification (RFID) traceability networks, a multi-layer privacy and security framework is proposed, which includes four facets: a security model, a communication protocol, access permission and privacy preservation. According to the security requirements that are needed in an RFID system, a security model that incorporates security requirements that include privacy of tag data, privacy of ownership, and availability of tag identity is introduced. Using this model, a secure communication protocol that can be used for anti-counterfeiting, automatic identification and privacy preservation is then developed. In order to manage the number of parties, data records of items, and complicated transitions of access permissions in an item-level traceability context, a well-designed access control protocol is proposed to parties that can prove the physical possession of an item;meanwhile, to address the privacy issues during data sharing in an RFID network, a vision of database systems that take responsibility for the privacy of the data they manage is also presented. 相似文献
8.
9.
Qi-Jie Zhao Peng Cao Da-Wei Tu 《上海大学学报(英文版)》2014,(1):3-12
Correctly coding materials and identifying characters marked on materials are very important for steel manufacturing industry to realize informatization management and intelligent manufacturing. However, the steel products manufacturing is often in a high temperature environment, and there are a lot of material storage and retrieval processes, workers are not easily close to the environment and complete tasks, so it is a great challenge to automatically mark and identify characters on the steel products. This paper presents a framework of label characters marking and management for steel materials, furthermore, a kind of marked characters online detection and tracking method has been provided based on machine vision. In addition, some experiments have been done in BaoSteel to mark characters on hot billets and recognize them in multi situations, and the results show that the proposed method is practical, and has provided a helpful exploration in obtaining accurate fundamental data for the intelligent manufacturing system in steelworks. 相似文献
10.
The reconfigurable manufacturing system （RMS） is the next step in manufacturing, allowing the production of any quantity of highly customized and complex parts together with the benefits of mass production. In RMSs, parts are grouped into families, each of which requires a specific system configuration. Initially system is configured to produce the first family of parts. Once it is finished, the system will be reconfigured in order to produce the second family, and so forth. The effectiveness of a RMS depends on the formation of the optimum set of part families addressing various recon figurability issues. The aim of this work is to establish a methodology for grouping parts into families for effective working of RMS. The methodology carried out in two phases. In the first phase, the correlation matrix is used as similarity coefficient matrix. In the second phase, agglomerative hier archical Kmeans algorithm is used for the parts family for mation resulting in an optimum set of part families for reconfigurable manufacturing system. 相似文献
11.
E-literature in the frame of e-learning 总被引：1，自引：1，他引：0
Zlatko Nedelko 《美中教育评论》2009,6(9):32-41
In last two/three decades, advancement in modern information and communication technology enabled e-learning. E-learning is supported with modern information and communication technology. A shift in learning paradigm, from traditional （i.e. collocated participants） to more distance education （i.e. geographic dispersed participants）, especially in the form of e-learning, has resulted in changes in many fields. Traditional and e-learning processes differ significantly in many aspects. One among the most important is the field of literature （e.g. its design, creation, implementation, distribution）. Literature which is used in traditional education process （e.g. hard copy books） could also be used in e-learning process, but is lees suitable. Therefore e-literature has evolved and gained importance recently. E-literature is more convenient because it is in electronic version （not hard copy）, which allows fast and cheap distribution to participants in e-learning process. In the contribution, we research student＇s preferences about literature in e-learning and especially what are the characteristics of a good e-literature. Therefore the paper provides an insight into student＇s attitudes towards the usage of e-literature, which are in turn importantly dependent upon the quality （i.e. characteristics） of e-literature. Results of a research among undergraduate students at business school are presented. 相似文献
12.
《海外英语》2012,(7):287-288
Against the backdrop of globalization in the modern time,cultural boundaries have been blurred by the trends of economic integration,global population movement and the development of information technology,which facilitated intercultural exchanges in a more extensive and profound way.Under the new cultural background,our country has called for cultural institutional reform by striving to strengthen the soft power to grow into a culturally strong country.The author holds that it is hard to realize the goals of conducting cultural institutional reform under the current political and economic systems and has proposed some points in this thesis. 相似文献
13.
Optimal distributed resource allocation in a wireless sensor network for control systems 总被引：1，自引：0，他引：1
MAO Jian-lin WU Zhi-ming 《浙江大学学报(A卷英文版)》2007,8(1):106-112
INTRODUCTION With the rapid development of wireless com-munication technology, the combination of wireless communication and control systems becomes a new trend of networked control systems. Among the kinds of wireless technologies, wireless sensor network (WSN) has attracted a lot of interest and visibility due to its huge application space. WSN is a kind of wire-less ad-hoc network which connects embedded sen-sors, actuators, and processors and in which each node consists of a wireles… 相似文献
14.
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
15.
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
16.
This paper is a report on an introduction to the teaching model of college English course based on WebQuest, in which learners learn English in a process of using the World Wide Web to solve a problem. It’s one of the latest uses of technology gaining popular status in education. It is characterized as a computer-based, student-centered inquiry learning activity. The WebQuest has become prominent in many educational areas and has received considerable attention from teachers and educators. That web-based self-access learning should be integrated into college English courses is strongly advocated by the Ministry of Education in China and a new teaching model of college English course based on WebQuest will become a good complement for the traditional English teaching models. 相似文献
17.
ASR technology for children with dyslexia： Enabling immediate intervention to support reading in Bahasa Melayu 总被引：1，自引：0，他引：1
Husniza Husni Zulikha Jamaludin 《美中教育评论》2009,6(6):64-70
Reading is an essential skill towards literacy development, and should be provided so that children can master the skill at their early ages. For dyslexic children, mastering the skill is a challenge. It has been widely agreed that the theory behind such difficulties in reading for dyslexic lies in the phonological-core deficits. Support has been given in many ways to dyslexic children to teach them reading through using various multi-sensory methods and using computer-based applications that include animated characters and text-to-speech （TTS） technology. In such applications, although stimulating, it requires the children to call for help by clicking on the custom-made buttons on the computer screen, often, such an application requires the dyslexic children to be aware of their mistakes and be able to judge when help is needed. They are just reluctant to ask the computer for help. Hence, such technology does not provide immediate intervention to correct any reading failure. It is therefore worth to look at the promising automatic speech recognition （ASR） technology to provide such intervention. Hence, this paper gives an overview of the use of ASR to facilitate immediate reading intervention which is the key element of remediating reading among dyslexic children. For such intervention to work, data on reading mistakes and patterns are observed and collected in audio format. The data serve as training and testing samples for an ASR to train on. An observation was carried out in two public schools participated in the study to record dyslexic children＇s reading in Bahasa Melayu （BM） and observe error patterns and their behaviors toward reading. A total of 10 dyslexic children are involved and a total of 6384 utterances from a set of selected words have been gathered and analyzed. Data are grouped into error type categories and the analysis performed gives ＂vowel substitution＂ as the most frequent error made （20%）. The significant findings can be of interest of special education teachers or parents to devise and use suitable approach to correct reading mistakes often made by dyslexic children. The findings also contribute to the development of a suitable and well-tuned ASR model focusing on dyslexic children reading aloud in BM. 相似文献
18.
The development of science and technology has made it not only possible but very convenient for people living in different parts of the world to communicate with each other, thus bringing forth a new form of communication: computer-mediated communication (CMC). Text-based CMC is one of the most popular forms of CMC in which people send instant messages to others in different settings. Since this mode of interaction combines features of both the written and spoken language (Greenfield & Subrahmanyam, 2003), it’s of great interest whether it follows the same sequential rule as the telephone conversation. However, compared to telephone conversations, computer-mediated communication has received much less attention, let alone text-based CMC. The existing body of literature mostly focuses on content analysis and linguistic features but neglects the sequential organization of such interaction (Paolillo, 1999; Greenfield and Subrahmanyam, 2003; Herring, 1999). In light of this, this paper examines the opening moves of instant message exchanges among Chinese adults in an attempt to find out the unique features characterizing the way they open an online chat. The framework that was chosen for data analysis was the sequential model proposed by Schegloff for American telephone openings. 相似文献
19.
Measurement of oil volume fraction and velocity distributions in vertical oil-in-water flows using ERT and a local probe 总被引：2，自引：0，他引：2
INTRODUCTION The need for metering multiphase flow in the petroleum industry has been evident for many years. Considerable research has been conducted into this field for developing a suitable flowmeter which can be used in industrial environments. Various tech- nologies have been employed, and among which the tomographic techniques are increasingly being used. Process tomography is an emerging measure- ment technology with applications in a broad range of industries. It is non-invasive a… 相似文献
20.
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