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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
781

Application Generator: A Framework and Methodology for IS Construction

Chang, I-chia 07 June 2002 (has links)
¡@¡@There is a general agreement that information system (IS) is one of the effective solutions to help enterprises dealing with the challenge in today¡¦s dynamic environment. In response to the changing business environment, the need for a system with flexibility, high quality, and low cost has increased dramatically. Besides, end users more and more rely on IT (information technologies) or IS for their daily life or work. Therefore, how to attain high software throughput would be highly sought constantly. An idea of reusing previously developed modules, packages, components, software development methodologies, analysis data and test information has been attracting as a keystone to improve software productivity. This approach was called component-based development (CBD) or component-based software engineering (CBSE) and is becoming the main stream of software development. ¡@¡@Various CBD approaches, tools, and techniques were proposed in the literature, however the research on the integration of the above into an environment to enhance the system development is virtually lacking. Therefore, we proposed a framework of application generator, which integrates above approaches and concepts into a collaborative mechanism. Otherwise, we proposed a methodology based on our generator for end users to translate the business models or user requirements into the specification and construct application more efficient. Finally, we apply this methodology to a real-world case and generate the application by the generator in order to verify the feasibility.
782

Java-based Human-Machine Interface Development of Automation System

Lin, Chih-Chung 01 July 2002 (has links)
Graphic-Monitor software on market always emphasizes a friendly User-Interface, many types of controllers or devices support, convenient Network-Communication and to communicate with related Database. Nevertheless, I/O control interface cards are not supported by the Graphic-Monitor software. Only Programmable Logic Controllers and Distributed Input/Output modules are supported. In addition, although it provides many basic functions to set devices¡¦ action process, it doesn¡¦t allow user to write complex motion control program. This limits the flexibility of motion control. The solution in the academia is to use various kinds of programming language like C++ Builder or LabVIEW as the development tools. And then, depends on the demand of the hardware to develop Human Machine Interfaces of production devices. Although these programming languages are very powerful, they are too expensive and platform-dependent. In this thesis, a platform independent and cost-free programming language, Java, is adopted to develop a human-machine-interface of an automatic production system integrated with various kinds of I/O control cards. This HMI has the following features: -- Consists of data monitoring, motion control, image inspection, and network communication modules; -- Can run under any operation system; -- Cost-effective. Two integrated examples are implemented with this HMI in the lab. One is ¡¥Production system remote control¡¦ that combines the motion control and network communication modules; another is ¡¥Vision introduce search and positioning system¡¦, in which the motion control and image inspection modules are used.
783

The Corporate Value Relevance of R&D Expense in High-tech. Industry.

Su, Ming-Hsin 30 July 2002 (has links)
(none)
784

Research on Exemption from Punishment after Community-Based Treatment

Jang, Shenq-Shii 24 January 2003 (has links)
none
785

The influence of technology infusion in service encounter¡XTaking web-based instruction for example

Lan, Hung-Wen 10 February 2003 (has links)
Service encounter is the core of many service industries. Most researches on service encounter pay attentions to the interpersonal interaction in the past. But in recent years, because of the fast development of technology, especially on the use of information technology, it brings the new turning point in enterprises, and it changes the original interpersonal interaction. College education is a kind of high interpersonal interaction service industry. In recent years, web-based instruction became a trend in college education. Therefore, this study attempt to know the change of learning satisfaction after the technology infusion in service encounters from the student¡¦s point of view. Aimed at the student of traditional and web-based instruction respectively and used critical incidence technique (CIT) to collect and analyze the data, we found the satisfaction/ dissatisfaction sources and compared the difference between technology infusion or not. There were five findings in this study. 1. The satisfaction/dissatisfaction factors were categorized to seven sources. They were ¡§learning environment¡¨, ¡§web-based instruction system¡¨, ¡§instructor¡¨, ¡§ peer relationship¡¨, ¡§course¡¨, ¡§interaction¡¨, ¡§entire performance¡¨. 2. Before the technology infusion, ¡§instructor¡¨ is the critical factor to influence satisfaction with service encounter. The teaching attitude, teaching performance, profession and expression ability of instructors will influence learning satisfaction. 3. After the technology infusion, ¡§web-based instruction system¡¨ is the critical factor to influence satisfaction with service encounter. The design, stability, ease of use, speed of data transmission, flexibility of the web-based instruction system will influence learning satisfaction. 4. Whether the technology infusion or not, we found that the importance of ¡§interaction¡¨ did not decrease. 5. Whether the technology infusion or not, ¡§peer relationship¡¨ is the important source of learning satisfaction.
786

Study on Fault Restoration Strategy of Distribution Systems with Colored Petri Net Model

Tsai, Hung-Ying 12 June 2003 (has links)
With load growth of distribution systems, it becomes very complicated for dispatchers to obtain restoration plan for unfaulted but out-of-service areas. In this thesis, a rule-based expert system with a colored Petri net (CPN) inference model is developed. The CPN models of distribution components such as four-way line switches are proposed to derive the proper switching operation plan for service restoration by applying reasoning in the CPN. After main transformer contingency has been identified and isolated, it is highly possible that the out of service customers can not be restored completely because of the shortage of capacity reserve. The feeders which serve more key customers with higher service priority will have better chance to be selected for restoration. With the system reconfiguration to cover the load change of service zones over a longer period, during the process of switching operation, the maximum load demand of out-of-service area over the restoration time is considered in the CPN. To prevent the over-unbalance tripping of distribution feeders during switching operation process, the maximum tolerable current unbalance between any two phases is also considered in the CPN model. To assure the restoration plan complying with the operation regulation, heuristic rules based on the standard operation procedures of Taipower distribution system are included in the best first search of the CPN. A Taipower distribution system with 67 feeders is selected for computer simulation in this thesis to demonstrate the effectiveness of the proposed methodology. It is found that the service restoration of distribution systems can be obtained very efficiently by applying the proposed CPN model.
787

Probing the Microstructure of Nitride-Based Semiconductors by X-ray Photoelectron Spectroscopy

Kuo, Wen-Ting 29 June 2003 (has links)
Incorporation of nitrogen into ¢»-¢½ materials such as GaAsN and InGaAsN, have recently drawn much attention, due to the unique properties as well as potential device applications of such materials. The purpose of this thesis is to probe microscopic compositions and electronic structures in a series of N-based semiconductor compounds. For the material and electronic structure characterizations, X-ray photoelectron spectroscopy (XPS) with synchrotron radiation beam was adopted to analyze the sample quality under different growth and post-growth thermal annealing. Through detection of samples of InGaAsN in comparison with a series of samples of GaAsN, InAsN, InN, GaN, InGaAs and GaAs, the experimental result and analysis. Now X-ray photoelectron spectroscopy investigation on ¢»-¢½alloys containing a few percentage of nitrogen demonstrated the success of nitrogen incorporation. X-ray photoelectron spectroscopy investigation on InGaAsN films and curve fitting analysis, it can provide evidence of the existence of two principle N configurations, indicating the formation of N-In, N-Ga bonds. Through an estimation of the sample surface composition was made on the basis of the peak area: N-In/N-Ga larger than 3, it can provid direct evidence of the presence of preferential bonding of N to In. The incorporation of atomic nitrogen was added during the annealing. Right through X-ray photoelectron spectroscopy in annealed InGaAsN film can N-In and N-Ga bonds be observed to be increase, but N-In/N-Ga larger than 2, The bonds of atomic nitrogen is still N-Ga bonds.
788

Integrating Big Six Skills Approach with Web-based theme learning

Hsieh, Cheng-Yaw 26 July 2003 (has links)
The purpose of the research is to construct an instruction program about integrating Big6 skills approach with web-based theme learning by using systematic instruction design model to analyze learners¡¦ background, the content of the curriculum, instruction goals and evaluation methods. The researcher designed teaching activities and learning materials based on two topics in science curriculum¡Xclimate and constellation, and furthermore took the teaching action research divided into two sections and three cycles. Through feedback, reflection and correction, the instruction activities in this program has been developed and divided into four sections¡X(1) to lead to theme learning, (2) Big6 research plan, (3) group learning, (4) result exhibition and evaluation. The instruction program was put into practice in one fifth-grade class of elementary school. After the action research, the students with different abilities showed different learning effect. The result that over 90% students said they gained satisfied achievement and over 70% passed the cognitive test in Big6 skills revealed most of the students really learned the content of the instruction program, but a few students needed the teacher and peer groups to provide much more scaffoldings and learning opportunities, especially in defining questions and finding information. After the three- cycle instruction program, the students got the learning abilities as follows-- (1) learning Bid6 systematic thinking model, (2) learning Big6 skill research method, (3) learning how to write theme reports, (4) learning how to present their products, (5) learning evaluation and reflection, (6) improving abilities to apply technology, (7) learning knowledge related to topics, and revealing the self-leading learning style under the influence of Big6 instruction. The web-based instruction environment constructed on ¡§Open network education platform system like Educities¡¨ can reduce the teacher¡¦s pressure on managing web-based instruction. The functions can cope with the need of the web-enhanced instruction, and become the important communication media between teacher and students in students¡¦ active learning section. The characteristic of the internet on multiple communication mechanism without limitation of space and time can expand the effect on active learning.
789

An Exploratory Study on e-Retailing Activities from a Activity Based Cost Approach

Chen, Chih-Peng 04 August 2003 (has links)
According to Michael Porter¡¦s Competitive Advantage, only through Value Chain Analysis, a company can realize it¡¦s cost behavior and the resources needed for differentiation. Thus the company can optimize its resources usage and increase it¡¦s business activities¡¦ performance. With the Internet environment, economic value for a company is nothing more than the gap between price and cost, and it is reliably measured only by sustained profitability. In e-retailing, e-retailers that want to reach competitive advantage and high economic value must consider how to create real margins, how to measure and manage the cost of e-retailing activities, and execute it in a efficient way to enhance e-retailer¡¦s competitive advantage. This research applies Activity-Based Costing approach to confer e-retailing activities. Value chain analysis is first employed to explore the primary activities of e-retailing. Then the improvement of cost and process are sought from activity analysis, resource cost driver and process cost driver. Finally, the critical e-retailing activities result from the internal value chain analysis. The research results indicated that the price of product and the characteristic of product have different influence on e-retailing activities. In addition, e-retailer want sustained profitability, the finite resource must provide for the customer and product that contribute to e-retailer¡¦s sustained profitability. Finally, the research also indicated that the link of marketing/sales activities and customer service activities are the most critical e-retailing activities. Keyword¡Gvalue chain, e-retailing activities, Activity Based Costing
790

The ability of the Kolbe A Index action modes to predict learners' attitudes and achievements within a Web-based training context

Wongchai, Sasicha 30 September 2004 (has links)
The purpose of this study was to investigate the ability of the Kolbe A Index to predict learners' attitudes and achievements within a web-based training context. The Index is used to measure the conative capacities of individuals. The Index translates raw scores into four Action Modes: Fact Finder, Follow Thru, Quick Start, and Implementor. A web-based simulation of training on customer service excellence was created containing four modules designed to match the respective learning style of each of the four Action Modes suggested by the Kolbe Corporation. Research questions were as follows. To what extent do the four Kolbe A Index Action Modes predict 1) how well learners will like content formatted to match the learning styles of the four Modes, 2) how well learners will remember content formatted to match the learning styles of the four Modes, and 3) how well the learners will remember the content regardless of the format? Three experts in applications of the Kolbe A Index then validated the simulation. Five other experts, each with a Ph.D. in the social sciences, validated the evaluation of learners' attitudes and achievements. Then a pilot study to collect data for a reliability analysis was conducted. Sixty graduates from an international program in economics in Thailand participated in this study. Data were collected entirely through the Internet and in English. Multiple linear regression analyses with backward stepping method were performed to answer the research questions. Based on the limitations and data analyses of this study, the Kolbe A Index Action Modes did not predict how well learners liked content formatted to match the learning styles of the four Modes, how well learners remembered content formatted to match the learning styles of the four Modes, nor how well the learners remembered the content regardless of the format. More research is needed to explore how the Kolbe A Index Action Modes can be used to predict learners' attitudes and achievements.

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