• Journal of the Korean Geographical Society
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• v.31 no.2
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• pp.309-316
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• 1996

With the increased availability of spatial datasets and advances in data processing technologies, the last 50 years witnessed remarkable progress in the area of cartography and geoinformatics. Researchers in Korea involved in these area, however, were exposed to the new development only recently. They are now at the stage of absorbing the works of leading countries. There have been only a small number of research papers on the area of conventional cartography land use/vover mapping, mapping of distribution of slope calsses, and topographic models. It is only recently that the research scope be extended to computer-assisted cartography and Geographic Information System (GIS). The majority of research papers have been focused on the applications of GIS. Recently, a group of researchers begin to address some of the fundamental issues in GIS such as formal models, standization, data structure, spatial analysis and networking.

• The Journal of the Korea Contents Association
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• v.12 no.11
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• pp.145-154
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• 2012

The major purpose of this study is to examine how the support for dance education of dance majors affects the instructor' trust and dance attachment. This research was executed as the subjects who are currently the student of dance majors of a college in Seoul, Kyonggi, Daejeon and Chungchungnam-do, one college were selected from each district. And by using purposive sampling method, total of 262 peoples that were used in final analysis was extracted. In this study, adequacy and reliability of the questionnaire were verified by factor analysis, reliability analysis, regression analysis and course analysis by using SPSS18.0. The conclusion is as follows. First, instructor's support for dance education influences on instructor' trust. Secondly, support for dance education partly influences on dance attachment. Thirdly, instructor' trust influences on dance attachment. Lastly, support for dance education influences dance attachment throughout instructor' trust. Especially, support for dance education' influence for dance attachment throughout instructor' trust is more influential than support for dance education' influence for dance attachment directly. Now it is obvious that instructor' trust is the important variable that intermediate support for dance education and dance attachment.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2005.05a
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• pp.266-273
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• 2005

Data mining techniques enable us to generate useful information for decision support from the data sources which are generated and accumulated in the process of routine organizational management activities. College administration system is a typical example that produces a warehouse of student records as each and every student enters a college and undertakes the curricular and extracurricular activities. So far, these data have been utilized to a very limited student service purposes, such as issuance of transcripts, graduation evaluation, GPA calculation, etc. In this paper, we utilize Holland career search test results, TOEIC score, course work list, and GPA score as the input for data mining and generation the student advisory information. Factor analysis, AHP(Analytic Hierarchy Process), artificial neural net, and CART(Classification And Regression Tree) techniques are deployed in the data mining process. Since these data mining techniques are very powerful in processing and discovering useful knowledge and information from large scale student databases, we can expect a highly sophisticated student advisory knowledge and services which may not be obtained with the human student advice experts.

• Communications of Mathematical Education
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• v.33 no.3
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• pp.335-354
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• 2019

The purpose of this study is to explore alternative ways of teaching derivatives in a way that emphasizes intuition. For this purpose, the contents related to derivatives in Korean curriculum and textbooks were analyzed by comparing with contents in Singapore Curriculum and textbooks. Singapore, where the curriculum deals with derivatives relatively earlier than Korea, introduces the concept of derivatives and differentiation as the slope of tangent instead of the rate of instantaneous change in textbook. Also, Singapore use technology and inductive extrapolation to emphasize intuition rather than form and logic. Further, from the results of the exploration of other foreign cases, we confirm that the UK and Australia also emphasized intuition in teaching derivatives and differentiation. Based on the results, we discuss the meaning and implication of introducing derivatives and teaching differentiation in a way that emphasizes intuition. Finally, we propose the implications for the alternative way of teaching differentiation.

• The Korean Journal of Applied Statistics
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• v.35 no.6
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• pp.739-754
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• 2022

Usually, text data consists of many variables, and some of them are closely correlated. Such multi-collinearity often results in inefficient or inaccurate statistical analysis. For supervised learning, one can select features by examining the relationship between target variables and explanatory variables. On the other hand, for unsupervised learning, since target variables are absent, one cannot use such a feature selection procedure as in supervised learning. In this study, we propose a word selection procedure that employs topic models to find latent topics. We substitute topics for the target variables and select terms which show high relevance for each topic. Applying the procedure to real data, we found that the proposed word selection procedure can give clear topic interpretation by removing high-frequency words prevalent in various topics. In addition, we observed that, by applying the selected variables to the classifiers such as naïve Bayes classifiers and support vector machines, the proposed feature selection procedure gives results comparable to those obtained by using class label information.

• Proceedings of the Korea Multimedia Society Conference
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• 2000.04a
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• pp.284-287
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• 2000

본 논문에서는 Trimble Lassen-SK8 GPS 수신기로부터 측정된 위치정보를 수치지도에 표시하고 이로부터 정보안내 시스템을 설계하였다. 이 시스템에서는 특정위치에 대한 안내와 관련된 음성정보를 출력하고 그 지역을 벗어나는 경우에는 정보의 출력을 종료하도록 한다. GPS 의 수신오차는 원의 방정식을 사용하여 범위를 벗어나는 오차발생에 대한 처리가 가능하도록 했으며, 수치지도의 특정위치의 식별을 위해 Bessel TM 좌표를 WGS-84 경위도 좌표로 적용하였다. 본 논문의 결과는 학교안내 시스템에 적용시켰으며, 만족할만한 결과를 보였다.

• 대한핵의학회:학술대회논문집
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• 2003.11a
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• pp.23.2-23.2
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• 2003

• Annual Conference of KIPS
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• 2001.10b
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• pp.1139-1142
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• 2001

본 논문에서는 대표적인 학생생활지도이론과 상담이론에 근거한 상담실천방법을 토대로 하여, 정보기술을 접목시킨 상담사이트를 설계하였다. 또한 타 상담사이트의 미비한 사항들을 찾아 개선점을 보완하였으며, 효율적인 학생생활지도의 상담을 위한 사이트를 구현하였다.

• Proceedings of the Korean Society for Information Management Conference
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• 2006.08a
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• pp.113-120
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• 2006

본 연구에서는 사회학 분야 웹 정보원을 대상으로 동시링크분석을 실시하여 특정 학문분야의 지적구조를 분석하고, 검색엔진별 지적 구조의 차이를 분석함으로써 웹 정보원의 특성을 살펴보았다. 세 개의 검색엔진을 대상으로 지적구조의 차이를 비교한 결과, 웹 정보원 지도에서 전체적인 지적구조는 비슷하게 나타났지만, 몇 개의 웹 정보원의 경우에는 소속군집이 다르게 나타난 경우도 있었다. 그리고 Altavista와 AlltheWeb은 지도상의 웹 정보원 분포에 있어서 거의 유사한 구조를 보여주었다.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2003.04a
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• pp.400-405
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• 2003

본 연구에서는 기존 지형도나 준공도면 자료에서 상세정보가 누락되거나 갱신이 이루어지지 않아 시설물관리체계에 필요한 수치지도의 체계적인 구축이 요구되는 지역에 적용할 수 있도록 지상사진, 항공사진 등 영상자료에 다양한 사진해석 기법을 적용하여 수치지도를 생성하고 공간 및 속성정보를 추출하였다. 본 연구에서는 다중사진 촬영에 의하여 대상물의 3차원 모델과 3차원 사진영상모델을 생성하였다. 또한, 소축척 항공사진을 이용하여 대상지역의 벡터라이징을 실행한 결과, 각 건물과 도로시설물의 위치와 형태 등 공간정보의 추출이 가능하였다.