• 한국산림과학회지
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• 제88권1호
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• pp.63-72
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• 1999

이 연구에서는 산림계획에 관계되는 자료관리는 물론 국유림에 적용되는 영림계획의 운영을 관계형 데이터베이스체계로 개발하였다. 이 데이터베이스체계에서는 영림계획 업무에서 요구되는 여러 가지 기능들을 메뉴체계에 반영하였으며, 산림조사, 영림계획, 연차계획 및 임반연혁 자료들을 유기적으로 관리할 수 있도록 하였다. 이 모델은 한글 윈도우 95 환경에서 구동하도록 설계되어 있으며 프로그램은 Visual Basic 5.0을 사용하여 작성하였고 데이터베이스 기본 엔진으로 Microsoft사의 ACCESS를 이용하였다. 이 논문에서는 영림계획업무 내용을 분석하고, 이를 토대로 작성된 관계형 데이터베이스 설계내역, 모델구조 및 응용체계를 설명하였다. 그리고 이상에서 설명한 데이터베이스의 응용체계를 실제 화면모드 출력창을 이용하여 제시하였다.

• 한국측량학회지
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• 제25권3호
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• pp.249-255
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• 2007

국가정보화사업이 시작되면서 수치지도를 비롯한 지리정보시스템의 기반이 되는 공간데이터 구축이 활발히 이루어지고 있다. 그러나, GIS 시스템을 구축한 각 지방자치단체 및 관련기관에서는 GIS 공간 DB의 신속한 갱신에 있어 기술적 조직적으로 많은 문제점을 가지고 있다. 본 연구는 소규모 대상지역에서 수시로 변화하는 공간데이터를 효율적으로 수시갱신하기 위하여 객체기반의 수시갱신시스템을 개발하고자 공간데이터 저장은 유일식별자로 객체의 생성, 변경, 소멸 등의 이력관리가 되도록 하였고, 실시간으로 수시갱신할 수 있도록 하였다. 따라서, 본 연구는 변경된 지형지물을 현장이나 사무실에서 실시간으로 갱신할 수 있는 수시갱신시스템을 개발함으로써 GIS 공간 DB를 보다 효율적으로 갱신하고, GIS 자료의 최신성을 확보하며, 일반 시민에 대한 고품질의 공간정보서비스 제공 및 국가 산업발전에 기여할 수 있도록 하였다.

• 예술인문사회 융합 멀티미디어 논문지
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• 제7권1호
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• pp.253-263
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• 2017

최근 한국사에 필요성이 증대하고 사람들의 관심이 높아지면서, 한국사 학습을 위한 다양한 어플리케이션들이 등장하고 있다. 이러한 기존의 한국사 학습 어플리케이션은 문제은행 방식으로 사용자들에게 객관식 문제를 제공한다. 하지만 문제은행 방식은 미리 저장된 문제를 가져와 사용함으로써 계속 사용할 경우 중복되는 문제로 인하여 필연적으로 학습효율이 떨어지게 된다. 본 논문에서는 한국사 데이터베이스를 기반으로 한국사 학습문제를 자동적으로 생성하는 시스템인 K-History의 개발과 이를 활용한 한국사 학습 어플리케이션인 한국사 무한도전의 개발에 대하여 기술한다. K-History의 개발을 위하여 한국사 학습 교재를 바탕으로 다양한 한국사 학습 문제를 분석하여 학습문제의 대표 유형을 분류하고, 발견된 유형에 따라 문제를 생성하는 알고리즘을 제안한다. 개발된 한국사 학습문제 생성 기법은 다양한 학습 시스템에 적용되어 문제 생성을 위한 비용을 줄일 수 있으며, 다양하게 생성된 학습문제를 통하여 학습자의 학습효율을 높일 수 있을 것으로 기대된다.

• Asian review of World Histories
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• 제4권1호
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• pp.3-34
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• 2016

This introduction is both a statement of a research problem and an account of the first research results for its solution. As more historical databases come online and overlap in coverage, we need to discuss the two main issues that prevent 'big' results from emerging so far. Firstly, historical data are seen by computer science people as unstructured, that is, historical records cannot be easily decomposed into unambiguous fields, like in population (birth and death records) and taxation data. Secondly, machine-learning tools developed for structured data cannot be applied as they are for historical research. We propose a complex network, narrative-driven approach to mining historical databases. In such a time-integrated network obtained by overlaying records from historical databases, the nodes are actors, while thelinks are actions. In the case study that we present (the world as seen from Venice, 1205-1533), the actors are governments, while the actions are limited to war, trade, and treaty to keep the case study tractable. We then identify key periods, key events, and hence key actors, key locations through a time-resolved examination of the actions. This tool allows historians to deal with historical data issues (e.g., source provenance identification, event validation, trade-conflict-diplomacy relationships, etc.). On a higher level, this automatic extraction of key narratives from a historical database allows historians to formulate hypotheses on the courses of history, and also allow them to test these hypotheses in other actions or in additional data sets. Our vision is that this narrative-driven analysis of historical data can lead to the development of multiple scale agent-based models, which can be simulated on a computer to generate ensembles of counterfactual histories that would deepen our understanding of how our actual history developed the way it did. The generation of such narratives, automatically and in a scalable way, will revolutionize the practice of history as a discipline, because historical knowledge, that is the treasure of human experiences (i.e. the heritage of the world), will become what might be inherited by machine learning algorithms and used in smart cities to highlight and explain present ties and illustrate potential future scenarios and visionarios.

• Journal of Acupuncture Research
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• 제33권1호
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• pp.57-68
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• 2016

Objectives : The purpose of this study was to investigate the correlation between patients' characteristics and the beginning period of improvement, as well as contribute to the efficient management of Bell's palsy patients. Methods : The subjects were 94 patients with Bell's palsy. This study was carried out through the use of an administrative database that included patients' characteristics and clinical information. The analysis of the beginning period of improvement by gender, hypertension, diabetes, drinking history, smoking history and facial palsy history was conducted by independent sample t-test. The analysis of the beginning period of improvement by age, House-Brackmann grade, Yanagihara scale and period receiving Korean medical treatment was conducted by Pearson's correlation analysis. Further analysis of the beginning period of improvement by associated symptoms and seasons was conducted by one-way analysis of variance. Results : 1. Significant correlations were not found between the beginning period of improvement and gender, age, season, smoking history, drinking history, facial palsy history, House-Brackmann grade, Yanagihara scale, hypertension, diabetes or associated symptoms. 2. There was significant correlation between the period of receiving Korean medical treatment and the beginning period of improvement. Conclusion : In this study, the earlier that patients received korean medicine treatment after onset, the earlier that the beginning period of improvement could be seen. Therefore, for the efficient management of facial paralysis patients, it is expected to help secure a baseline.

• 정보처리학회논문지D
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• 제17D권2호
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• pp.87-102
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• 2010

현재 우리나라에서는 매일 막대한 양의 교통 데이터가 측정장치들로부터 수집되고 있으나 오류 데이터와 누락된 데이터들이 상당히 많은 실정이다. 더구나 이러한 데이터는 중요한 분석의 대상이 될 수 있음에도 불구하고 일정 시간이 지나면 삭제되고 있다. 그리하여 본 논문에서는 이러한 교통 데이터를 지속적으로 누적하여 다차원 모델로 저장하면서 데이터의 품질을 결정하는 유효성과 완전성을 높이면서 what-if 분석 기능을 지원하는 일련의 자료처리 과정을 제공하는 통합 교통이력 데이터베이스 시스템의 구현을 설명한다. 구현된 시스템에서는 다양한 오류 및 누락 데이터 패턴들을 보정하는 기법들을 제공하며, what-if 분석 기능은 다양한 데이터 정제 및 가공 과정들에 관련된 환경변수와 일련의 처리 과정들의 조합을 융통성 있게 정의하도록 함으로써 다양한 상황들을 가정하고 실험하여 결과를 분석할 수 있게 해준다. 이러한 what-if 분석 기능은 교통 데이터의 활용도를 획기적으로 높여주며 외국의 교통데이터 시스템들에서도 제공하지 못하고 있다. 교통이력데이터를 정제한 실험결과 매우 우수한 유효성 및 완전성을 가진 교통 데이터를 생성함을 확인하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 D
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• pp.778-780
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• 1997

This study considers a hydro power energy operation management and planning problem in KEPCO power systems for efficient use of hydro resources. A database is developed to provide with a convenience to hydro Power operation management and Planning by studying of the hydro resourse characteristics of Korea. The data is obtained in the operation history from 7 years ago and by considering the hydro facility planning to 2010 year. Also a computer program is developed to decide the monthly required volume of water and the water level of a dam in the Han river using the database.

• 산업경영시스템학회지
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• 제21권48호
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• pp.279-289
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• 1998

This study deals with the schemes of design, plan and operate maintenance management support systems and with the engineering approach for the solutions to build the maintenance management for the production efficiency. Maintenance Management Information System(MMIS) is the task that must focus on machinery historical data and planned maintenance action. Also the efficient supporting system in a maintenance management is achieved by database which is based on process of machinery's failure history. Designing method of maintenance management information system, maintenance modules are consisted of six factors ; machinery's historical data, lubrication control, check sheet, repair work, availability report, and performance report(control board and detailed reports), and then operators can rapidly utilize data in work place. In the implementation of designed model, program coding has been developed by Visual Basic 3.0. Data insertion, deletion and updating which perform menu screen is implemented by reading data from database. Implementation model based on LAN environment and related data is stored in Microsoft DBMS.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 춘계학술대회
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• pp.617-621
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• 2003

The purpose of this paper is to analyze piping failure trend of safety pipings In domestic nuclear power plants. First, database for the piping failure was constructed with 105 data fields. The database includes plant population data, event data, and service history data. 7 kinds of piping failures in domestic NPPs were investigated. Among the 7 cases, detailed root causes were investigated for 3 cases. The first one is pipe wall thinning in main feedwater pipings of Westinghouse 3 loop type plants. The root cause of the wall thinning was flow accelerated corrosion near welding area. The next one is leak event in chemical and volume control system(CVCS) due to vibration. Some cracks occurred in socket welding area. The events showed that the integrity or socket weld is very vulnerable to vibration. The last one is also a leak event in primary sampling line in Korean standard reactor due to thermal fatigue. Although the structural integrity was not maintained by the events, there was no effect on nuclear safety in the above 3 piping failure eases.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2009년도 세계 도시지반공학 심포지엄
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• pp.835-844
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• 2009

In this study, a database composed by 46 cases of tunnel collapses has been built up. Based on the database, comprehensive data analysis is carried out, providing us a number of the technical lessons, which can be considered in future design and construction to minimize possibility of tunnel collapse disaster. For making a better understanding, the technical lessons are given in two divisions: mountain tunnel and urban tunnel. Tunnel collapses taking place in the former tunnel are generally due to bad discontinuity condition of jointed rock mass. Otherwise, urban tunnel has weak condition generally on ground water and weathering of ground. Most of technical comments given in this paper are made based on the cases of tunnel collapses only used in this study, so that the comments seems to be hard to be available to all the tunnelling cases. However, the comment should be valuable technical lessons for tunnel engineers to consider in tunnel design or construction.