• Journal of KIISE:Computing Practices and Letters
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• v.7 no.5
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• pp.489-497
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• 2001

This paper describe design and implementation of a medical multi-agent system platform called MAMI (Multi-Agent system for Medical Image), which provides intelligent medical information services. The most important component of MAMI is a medical multi-agent system platform that supports a physical environment that medical agents can be deployed. MAMI follows FIPA (Foundation for Intelligent Physical Agent)\`s agent management reference model. In MAMI, COM(Common Object Model) and XML (eXtensibel Markup Language) for encoding ACL (Agent Communication Language) are used for multi-agent communications. In MAMI, a medical staff is conceptualized as an agent and integrated with multi-agent systems. MAMI agent platform provides an infrastructure applicable to share necessary knowledge between human agents and software agents. So MAMI makes intelligent medical information services easier.

• Journal of Korean Society for Geospatial Information Science
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• v.12 no.4 s.31
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• pp.61-68
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• 2004

In this paper, we suggest an automatic technique to obtain 3-D road information in complex urban areas using road pavement markings. This method is composed of following three main steps. The first step is extracting the pavement markings from aerial images, the second one is matching the same pavement markings in two aerial images, and the last one is obtaining the 3-D coordinates of those using EOP(exterior orientation parameters) of aerial images. Here, we focus on the first and second step because the last step can be performed by using the well hewn collinearity condition equation. We used geometric properties and spatial relationships of the pavement markings to extract the lane line markings on the images and extracted arrow lane markings additionally using template matching. And then, we obtained 3-D coordinates of the road using relational matching for the pavement markings. In order to evaluate the accuracy of extraction, we did a visual inspection and compared the result of this technique with those measured by digital photogrammetric system.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.32 no.9
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• pp.122-129
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• 2004

An accurate thrust measurement is one of the critical paths to the successful test and evaluation program of small liquid propulsion engines. This study describes the design factors for the development of thrust measurement system (TMS) as well as manufacturing practice of TMS hardware. We investigate characteristics of the TMS and its performance through hot-firing test of small liquid engine in a vacuum test cell which is capable of simulating 100,000 ft of altitude or higher. For performance test of TMS, we measure thrusts by changing propellant injection pressure at steady state firing mode as well as at pulse firing mode. Measured eigen frequency of the TMS is 67 Hz. Linearity test of the TMS shows good performance with less than 0.5% of linearity error.

• Journal of Internet Computing and Services
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• v.7 no.1
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• pp.91-99
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• 2006

This paper proposes a control path analysis mechanism to be used in the workflow mining framework maximizing the workflow traceability and re discoverability by analyzing the total sequences of the control path perspective of a workflow model and by rediscovering their runtime enactment history from the workflow log information. The mechanism has two components One is to generate the total sequences of the control paths from a workflow mode by transforming it to a control path decision tree, and the other is to rediscover the runtime enactment history of each control path out of the total sequences from the corresponding workflow's execution logs. Eventually, these rediscovered knowledge and execution history of a workflow model make up a control path oriented intelligence of the workflow model. which ought to be an essential ingredient for maintaining and reengineering the qualify of the workflow model. Based upon the workflow intelligence, it is possible for the workflow model to be gradually refined and finally maximize its qualify by repeatedly redesigning and reengineering during its whole life long time period.

• Journal of the Korean Society for Library and Information Science
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• v.34 no.1
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• pp.111-132
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• 2000

As the Web continues to expand and the amount of database increases, it is argued that the information scanning in web-centric search and retrieval become an important and professional activity. This analysis was performed to diagnose the ability of information scanning of searchers and to investigate the obstacles hindering the searchers from information scanning. Findings indicate that, even if the undergraduate students of information & library science had been exposed themselves to the LIS curriculum for four or three college years, their ability of information scanning was not sufficient enough to carry out successful DB searching or retrieval services as subject specialists. Some suggestions for improving information scanning ability of information professionals were derived from the experiment results.

• Journal of the Korean Society of Marine Environment & Safety
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• v.13 no.1 s.28
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• pp.75-92
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• 2007

This article is to investigate the development of seamanship and the art of ship building, marine environment, Silk Road through the sea, and spice exchange at the trade growth of Song Dynasty. For better understanding marine environments, I exemplified what goes before such essential factors as experience and skills in maritime activities. I also demonstrated that South Song Dynasty's abundant economic strength and foreign opening strategy had been supervised systematically through the trade management organization and noted that the nation's overseas exchange had made great effects on its society. The import of the perfume provided the cause where the western influence occupies the orient in the same time when it is a keychains of the orient and the western interchange. For this reason, perfume, which once contributed 1/20 of the revenue, enlarged its portion to 1/10 of the revenue. This indicates the influence of perfume on the national finance in the Song period.

• Journal of the Korea Society of Computer and Information
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• v.13 no.6
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• pp.69-76
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• 2008

The biggest strength of the Internet is to enable to access information without any limitation of time and space. As the Internet and IT technologies have been developed, various kinds of teaching ways in education field such as remote lectures, video lectures, and CAI(Computer Adapted Instruction) have emerged. In terms of education, evaluation can be a basic foundation to help teach students in the next learning stage according to each student's level. In addition, it is able to give the information of students'abilities and provides proper learning programs to teach students on a case-by-case basis. The purpose of the paper is to establish evaluation system on the WWW(World Wide Web) that can reflect learning activities part of students in their evaluation scores based on the two important learning theories, Behaviorism and constructivism, which are mainly used in evaluation procedures to judge learning ability of students. This system will give information about learners, and analyze the learning interest of learners. The proposed system enables teachers to evaluate learning ability of students through various kinds of information of learners, and to execute level-based education.

• Journal of Convergence Society for SMB
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• v.4 no.2
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• pp.1-5
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• 2014

Connotation and unlimited growth potential as the core infrastructure to implement the u-Korea RFID/USN is emerging to lead to a future Internet that can bring a huge transformation in the industry sector. On RFID/USN increase overall social interest of our country, if the world who want to dominate the market by securing the u-Korea vision and global RFID/USN technologies IT839 depending on the policy, has been active research on the USN and USN infrastructure in the future building is completed as quickly to take advantage of the USN. USN applications will increase. Of USN middleware and necessitate USN infrastructure-based application development in order to more easily USN middleware configuration directory service is one of the core services. USN infrastructure suitable for the directory service when considering the characteristics of WSN, such as the USN components, update existing directory services and search focused on the problem and receive, this paper can overcome this directory service design and implementation discussed.

• Journal of Digital Contents Society
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• v.17 no.1
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• pp.11-21
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• 2016

To provide more efficient and exact search result, internet systems will rely more and more on semantic web. Ontology is one of the important methods for implementation of semantic web. Ontology is used to implement an explicit formal vocabularies to share. However, important problems rise when dealing with ontology. Ontologies are typically subject to change because they are living. In order to handle ontology data change situation, a version handling system is needed to keep track of changes. For example, the queries subject to the previous ontology may become inconsistent and must be updated according to the newest version of ontology. Although many research was done in this area, there are still many problems to overcome. In this paper, we propose class and property transition graph for query transformation. The graph is created when ontology data is changed and applied to query transformation.

• Journal of Digital Convergence
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• v.10 no.11
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• pp.613-618
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• 2012

ICT education guidelines revised in 2005 reinforce computer science elements such as algorithm, data structure, and programming covering all schools. And Ministry of Education emphasizes STEAM education. Most important is that "How instruct them". This means necessity of contents. So this paper suggests learning method of Stack and Queue using LEGO MINDSTORMS NXT. The main purpose is that how stack and queue are used, when robot explore realistic maze. Teaching and learning strategies are algorithm, flowchart, and NXT-G programming. Simple maze has path in left or right, but complex maze has three-way intersection. These are developed by authors. Master robot explores maze and push stack, and then return to entrance using stack. Master robot explores maze and transmits path to slave's queue. And then slave robot drives without exploration. Students can naturally learn principles and applications of them. Through these studies, it can improves ability of logical and creative thinking. Furthermore it can apply to ICT and STEAM education.