• Journal of the Institute of Electronics Engineers of Korea CI
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• v.47 no.4
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• pp.44-53
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• 2010

Program plagiarism is a significant factor to reduce the quality of education in computer programming. In this paper, we propose the technique of identifying similar or identical programs in order to prevent students from reckless copying their programming assignments. Existing approaches for identifying similar programs are mainly based on fingerprints or pattern matching for text documents. Different from those existing approaches, we propose an approach based on the program structur. Using paring progrmas, we first transform programs into XML documents by representing syntactic components in the programs with elements in XML document, then run X-tree Diff+, which is the change detection algorithm for XML documents, and produce an edit script as a change. The decision of similar or identical programs is made on the analysis of edit scripts in terms of program plagiarism. Analysis of edit scripts allows users to understand the process of conversion between two programs so that users can make qualitative judgement considering the characteristics of program assignment and the degree of plagiarism.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.11-14
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• 2006

현재, 데이터베이스를 연동한 웹 스크립트 사용이 급속히 증가하고 있다. 요구되는 수요에 비해 웹 스크립트의 생성 및 변경에는 많은 시간과 노력이 소요되고 있다. 본 논문에서 소개하는 웹 스크립트 자동 생성기 WebGen은 웹 응용에 필요한 웹 폼들과 이 폼들을 통해 이루어지는 질의에 대해 데이터베이스와 연동하여 결과를 얻어 제공하는 웹 스크립트들을 자동 생성하는 소프트웨어 도구이다. WebGen은 웹 응용 개발자가 제공하는 구성파일(configuration file)에 정의된 내용을 스크립트의 기본 원형인 내장된 템플릿(template)에 반영하여 5개의 웹 스크립트들(search, select, edit, information, action)을 생성한다. action 스크립트를 제외한 나머지 스크립트들은 각각 해당되는 웹 폼을 생성한다. 따라서 웹 스크립트 생성을 위한 시간과 노력을 크게 줄여 웹 응용의 생산성을 향상시킨다. 또한, WebGen은 템플릿 기반이기 때문에 생성된 스크립트들과 WebGen 자체의 유지 보수를 효율적으로 할 수 있다.

• The KIPS Transactions:PartA
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• v.11A no.6
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• pp.459-468
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• 2004

Sharing XML trees on mobile devices has become more and more popular. Optimistic replication of XML trees for mobile devices raises the need for reconciliation of concurrently modified data. Especially for reconciling the modified tree structures, we have to compare trees by node mapping which takes O($n^2$) time. Also, using semantic based conflict resolving policy is often discussed in the literature. In this research, we focused on an efficient reconciliation method for mobile environments, using edit scripts of XML data sent from each device. To get a simple model for mobile devices, we use the XML list data sharing model, which allows inserting/deleting subtrees only for the repetitive parts of the tree, based on the document type. Also, we use keys for repetitive part subtrees, keys are unique between nodes with a same parent. This model not only guarantees that the edit action always results a valid tree but also allows a linear time reconciliation algorithm due to key based list reconciliation. The algorithm proposed in this paper takes linear time to the length of edit scripts, if we can assume that there is no insertion key conflict. Since the previous methods take a linear time to the size of the tree, the proposed method is expected to provide a more efficient reconciliation model in the mobile environment.

• The KIPS Transactions:PartD
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• v.14D no.2
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• pp.145-156
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• 2007

Recently, the needs for effective real time change detection algorithms for XML/HTML documents and increased in such fields as the detection of defacement attacks to web documents, the version management, and so on. Especially, those applications of real time change detection for large number of XML/HTML documents require fast heuristic algorithms to be used in real time environment, instead of algorithms which compute minimal cost-edit scripts. Existing heuristic algorithms are fast in execution time, but do not provide satisfactory edit script. In this paper, we present existing algorithms XyDiff and X-tree Diff, analyze their problems and propose algorithm X-tree Diff which improve problems in existing ones. X-tree Diff+ has similar performance in execution time with existing algorithms, but it improves matching ratio between nodes from two documents by refining matching process based on the notion of efficiency of matching.

• Journal of Environmental Impact Assessment
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• v.8 no.4
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• pp.1-12
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• 1999

The purpose of this study is to develop a Water Quality Management System(WQMS), which calculates pollutant discharge and forecasts water quality with a water pollution model. Operational water quality management requires not only controlling pollutants but acquiring and managing exact information. A GIS software, ArcView 3.1 was used to enter or edit geographic data and attribute data, and Avenue Script was used to customize the user interface. PCI, a remote sensing software, was used to derive land cover classification from 20 m resolution SPOT data by image processing. WQMS has two subsystems, database subsystem and modelling subsystem. The database subsystem consisted of watershed data from digital maps, remote sensing data, government reports, census data and so on. The modelling subsystem consisted of NSPLM(NonStorm Pollutant Load Model) and SPLM(Storm Pollutant Load Model). It calculates the amount of pollutant and predicts water quality. These two subsystems were connected through a graphic display module. This system has been calibrated for and applied to Mokhyun Stream watershed.

• Journal of Korean Academy of Nursing
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• v.38 no.6
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• pp.831-842
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• 2008

Purpose: The purpose of this study was to develop a web-based senescence preparation education program to promote successful aging. Methods: This program was developed based on Network-Based Instructional System Design (NBISD) model, using the following 5 processes: analysis, design, development, implementation, and evaluation. The program was operated for 10 weeks from March 17 to May 25, 2008. Results: There were 4 menu bars, introduction, related data, lecture room, and communication on the main page. In the operation of this program, HTML, ASP, JAVA Script, Namo web editor, Edit Plus, Front Page and multimedia technology were applied. The program content consisted of understanding elderly people, physical health, activity & exercise, nutrition, medication use, psychological health, intellectual health, understanding death, welfare system and leisure activity. Conclusion: This program could be a useful means to provide senescence preparation information to middle-aged adults. Also, it is expected to offer individualized learning opportunities to many learners in various settings. Nurses should further develop and facilitate various learning strategies including web-based programs for elder care.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.11a
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• pp.233-236
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• 2007

무선 인터넷 기술의 발전과 함께 이용자 수가 증가하면서 모바일 데이터베이스 응용 프로그램의 수요가 급증하고 있다. 그러나 모바일 데이터베이스 응용에 필요한 사용자 인터페이스와 질의 처리 코드는 대부분 수작업으로 작성되기 때문에 생산성이 낮고 버전 관리에도 많은 시간과 노력이 필요하다.[1] 본 논문에서는 모바일 데이터베이스 응용을 위한 스크립트 생성 도구인 MobileGen을 소개한다. MobileGen은 덕성여자대학교 도서관에서 사용하고 있는 DISCOVER와 같은 실용 데이터베이스들을 구성파일 생성단계, 스크립트 생성단계를 거쳐 응용 데이터베이스 내의 테이블 당 5개의 모바일 스크립트들(Search, Select, Edit, Information, Action)을 생성한다. 생성된 스크립트들은 데이터베이스 연동 및 질의 처리 코드를 포함하고 Action 스크립트를 제외한 나머지 스크립트들은 간단한 폼 형태의 카드 또는 연계된 카드들의 데크들을 생성한다. 따라서 MobileGen은 모바일 데이터베이스 응용의 생산성을 향상시키고 스크립트의 원형인 템플릿을 기반으로 하기 때문에 MobileGen 자체와 생성된 응용의 유지 및 보수를 용이하게 한다. 또한, MobileGen은 상용 생성기들에 비해 관심의 대상인 엔티티 외에 이 엔티티와 직 간접적으로 연관된 모든 엔티티들에 대한 정보를 한 데크에 제공한다.