Method of Precise Auto Tool Setting for Micro Milling

Based on microscope and image processing, a new method of auto tool setting for micro milling was presented. Firstly, a realtime image of tool setting area was obtained by microscope and CCD camera, then image processing was carried out on this image and the gap between the tool and workpiece was calculated. The gap measurement was sent to motion controlling card to make the tool approach to the surface of workpiece. These steps were repeated until the gap is zero, which means that tool setting was finished. Moreover, a reliability verification test was conducted. Results indicated that the precision of tool setting is satisfactory.     

Providing knowledge recommendations: an approach for informal electronic mentoring

The use of Web 2.0 technologies for knowledge management is invading the corporate sphere. The Web 2.0 is the most adopted knowledge transfer tool within knowledge intensive firms and is starting to be used for mentoring. This paper presents IM-TAG, a Web 2.0 tool, based on semantic technologies, for informal mentoring. The tool offers recommendations of mentoring contents built upon personal competencies of the mentee, combined with content and opinion tagging. To validate the tool, a case study comparing recommendations from the IM-TAG and a group of experts was conducted. Results show that the accuracy of IM-TAG's recommendations is notable and satisfactory. The main conclusions of this research may be valuable to organizations immersed in mentoring programs.     

鼓励私营部门参与教育的框架

私营部门以适当的方式参与教育,能够有效地帮助政府提高教育的质量与公平。本文论述了一个私营部门参与教育以实现有效教育供给的框架。在分析各国目前如何引入私营部门参与教育之后,基于满足有效教育供给的核心要素的要求,本文设计了一个分析这种参与之有效性的工具。这一工具概括了政府与家长各自的角色。本文综述了有关文献的内容,并应用此工具讨论了荷兰的案例。     

基于WEB的计算机辅助教学设计工具的设计与实现

从教学设计的实用性出发,先综述了教学设计、教学设计自动化、教学设计辅助工具等相关的研究发展情况,指出目前教学设计辅助工具应用领域的空白,然后针对高校工科专业的教学基础课程,运用相关的教学设计理论知识和数据库技术设计与实现了一套教学设计辅助工具,本软件工具依据课堂教学设计的过程中的步骤一步一步的引导教师进行教学设计,目标就是使课堂教学效果最优化。     

刀具半径补偿指令在数控机床上编程中的应用

刀具半径补偿指令是加工中心和数控铣床上一个常用的应用指令，但要应用好该指令，必须理解其工作原理和掌握其应用技巧。该文介绍刀具半径的补偿原理。并以铣加工外轮廓为例，详细分析了刀具半径补偿指令在数控铣床编程中的使用技巧。     

Authoring Tools for Component-Based Learning Environments

We argue that a focus on building an authoring tool for a complete learning environment is misplaced. An analysis of the task of authoring a commercial educational system reveals it to be best accomplished through authoring separate components. For many of these components, authoring tools already exist and need not be duplicated for use in educational systems. Connecting the various components together is a separate authoring task, and parts of this task are different for educational systems than for typical component-based software. The second half of this article describes the Visual Translator, an authoring tool we have written specifically for this purpose.     

A Web adaptive educational system for people with hearing difficulties

In this paper we present a web adaptive educational tool for the Greek Sign Language. The design and the implementation of the tool were partially funded by national bodies. The paper presents the architecture of the tool, in an abstract way and briefly describes its functionality. The interaction process followed is also presented.     

A web-based tool for dissertation writing Rosanne Strachan, Rowena Murray and Hilary Grierson

Online web tools are becoming an important and accessible means of supporting learning in higher education. Student writing is central to teaching and learning ( Lillis, 2001 ). This paper describes an online tool designed to support dissertation writing. By combining three types of online space—instructional material, a writing space and planning templates—this tool aimed to provide a holistic approach to writing and writing development. This paper demonstrates how the tool was used in an academic course in order to address certain teaching and learning problems identified by the course tutor. Student feedback suggests that while further development is needed, the tool was still useful. This paper raises awareness of the complex array of issues involved in dissertation writing and provides insights into solutions to writing problems. While we designed what we considered to be a web‐based tool for dissertation writing, we argue that the writing space and planning templates go some way towards creating an environment for the development of learning ( Häkkinen, 2002 ).     

KUKA制孔机器人自动换刀系统设计

针对现代工业中大型工件制孔加工存在的效率和精度不高的现状,设计了一款KUKA制孔机器人自动换刀系统。将西门子PLC与KUKA机器人控制柜进行PROFINET协议通讯,实现对机器人运动的控制,使机器人与刀库相配合,完成自动换刀操作,从而缩短加工过程中非制孔的时间,提高制孔工作效率。     

Design and Development of a Bilingual Multimedia Educational Tool for Teaching Chemistry Concepts to Deaf Students in Greek Sign Language

In this paper the design and development of a multimedia system which serves as a bilingual chemistry educational tool for deaf students is presented. Details of the architecture of the tool, its functionality and formative evaluation results are also presented. Furthermore the process to arrive at the chemistry terminology in Greek Sign Language used throughout the tool is briefly described.     

How New Caledonian crows solve novel foraging problems and what it means for cumulative culture

New Caledonian crows make and use tools, and tool types vary over geographic landscapes. Social learning may explain the variation in tool design, but it is unknown to what degree social learning accounts for the maintenance of these designs. Indeed, little is known about the mechanisms these crows use to obtain information from others, despite the question’s importance in understanding whether tool behavior is transmitted via social, genetic, or environmental means. For social transmission to account for tool-type variation, copying must utilize a mechanism that is action specific (e.g., pushing left vs. right) as well as context specific (e.g., pushing a particular object vs. any object). To determine whether crows can copy a demonstrator’s actions as well as the contexts in which they occur, we conducted a diffusion experiment using a novel foraging task. We used a nontool task to eliminate any confounds introduced by individual differences in their prior tool experience. Two groups had demonstrators (trained in isolation on different options of a four-option task, including a two-action option) and one group did not. We found that crows socially learn about context: After observers see a demonstrator interact with the task, they are more likely to interact with the same parts of the task. In contrast, observers did not copy the demonstrator’s specific actions. Our results suggest it is unlikely that observing tool-making behavior transmits tool types. We suggest it is possible that tool types are transmitted when crows copy the physical form of the tools they encounter.     

VINCE—an on-line tutorial tool for teaching introductory programming

We describe a tutorial tool which allows the execution of a C program to be graphically displayed. VINCE (Visual Instruction for Novices in a C Environment) is written in Java, allowing it to be used on the web. The student can enter their own C code, or select from a menu of pre-written tutorials, each illustrating a particular aspect of programming. The tool provides a simulated map of the computer's memory, showing where pointers and variables are stored. The map is dynamically updated as the program is executed. Explanatory notes for each step are provided. The program's function stack may be viewed. At present, the tool can only deal with syntactically correct C code. The package may be used at http://alife.mic.dundee.ac.uk/growe/VINCE/tutorial01.html     

Tool Support for Teaching the Personal Software Process

Software engineering education can be viewed as a challenging task. Computer science students tend to focus on the programming aspects of a project, and take a “hacking approach” to completing a project, rather than viewing the process. Our course material includes teaching the Personal Software Process (PSP). Students are required to produce defect and effort metrics, as well as project summary reports. Tools to assist information recording and production of reports are difficult for students to access. The cost in terms of financial and learning time is usually too high at the educational level to justify using commercial tools that are available for the professional software engineer. We have developed a tool—Personal Assistant for Software Engineers—to aid students in the learning of the PSP. The tool has been successfully used in four subjects for a semester. Following feedback and evaluation, it has been redesigned, and is currently in stage two. The tool has been useful for students, and has automated the previous manual process of producing time and defect reports, along with project summaries, thus allowing them to focus on the meaning of the information.     

A Web-based machining process monitoring system for E-manufacturing implementation

INTRODUCTION Recently, the application of the information technology into manufacturing fields gets more and more importance on the whole manufacturing shop floors. Currently, many researches reflect the effec- tiveness of knowledge-based production system re- lated to the exchange and management of various manufacturing information using information tech- nology via the Internet in order to increase the com- petitive power of industries. This research suggests a Web-based machining proce…     

可视化Java界面模板集成开发工具的设计与实现

介绍了一种可视化Java界面模板集成开发工具的设计思想与具体实现方法。该工具包含界面设计器,能提供给用户图形的可视化方式来设计界面;集成了自制布局管理器,该布局管理器能灵活控制控件的大小和位置;此集成开发工具能将界面内容保存在模板实例中以便修改及重用,并能根据模板实例生成界面程序源代码。该集成开发工具已用于作者开发的项目,取得了良好的效果。     

Beyond cognitive and metacognitive tools: the use of the Internet as an 'epistemological' tool for instruction

This paper argues that Internet‐based instruction should not be only perceived as a cognitive tool or a metacognitive tool; rather, it can be perceived and used as an epistemological tool. When the Internet is used as an epistemological tool for instruction, learners are encouraged to evaluate the merits of information and knowledge acquired from Internet‐based environments, and to explore the nature of learning and knowledge construction. This paper further asserts that Internet‐based instruction is perceived as a way to help learners develop advanced epistemologies. On the other hand, developmentally advanced epistemological beliefs can facilitate the practice of Internet‐based instruction.     

Fruitful student interactions and perceived learning improvement in DSLab: A dynamic assessment tool for distributed programming

This work presents an automated assessment tool for online distributed programming, called DSLab. It is a web-based environment that provides a transparent deployment and execution of assignments in remote computers, a transparent initialization and the possibility to add new logs by the students. DSLab has been evaluated in a real distributed learning environment by analysing students' own perceptions on their learning improvement and exploring whether students' interactions with the tool yielded a fruitful learning experience. Current research provides no evidence that the effects of such a tool have been investigated in the field of online distributed programming. Two types of analysis were performed: a quantitative analysis of data coming from students answering a questionnaire and an analysis of the log files of students' interactions with the tool. Our results showed that students perceived substantial learning improvement from the use of the automated assessment tool. Moreover, students produced fruitful interaction with the tool as soon as they achieved high familiarization and constant activity with it, which ultimately helped them improve their academic performance. Finally, the limitations of the current study and directions for future research are presented.     

Powerful Portfolios for Young Children

The use of portfolio assessment is a valuable tool for teachers to use with young children to better understand how young children develop and learn. An intentional data collection and documentation system becomes a very powerful assessment tool, one that is authentic and based on children’s capabilities and strengths. Children, educators, parents, and administrators are able to see the collection of items that celebrates the child. This article will describe several aspects of the portfolio system including: what a portfolio is; it’s purposes; how to create the portfolio; and, how to use the portfolio with families.