• 대한공간정보학회지
• /
• 제11권1호
• /
• pp.51-59
• /
• 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 모델을 생성하고, 촬영된 사진영상을 이용하여 대상물의 형태와 특징을 파악하는데 유용한 3차원 사진영상모델을 생성하였다. 또한, 소축척 항공사진을 이용하여 대상지역의 벡터라이징을 실행한 결과, 각 건물과 도로시설물의 위치와 형태 등 공간정보의 추출이 가능하였다.

• International Journal of Human Ecology
• /
• 제11권2호
• /
• pp.93-101
• /
• 2010

This study finds methods to activate culinary education by surveying the level of recognition for culinary practice from the culinary teachers of vocational high schools. The number of individuals surveyed is 103. Data is verified by using SPSS 14.0 (SPSS Inc, Chicago, USA). The results of the survey on recognition for culinary education showed that learning requirements are very high as well as that theoretical education and trial demonstrations are necessary to enhance the effects of culinary practice education. Desired teaching learning materials were cooking materials by a certified technician. Their desired supplementary data for enhancing practical techniques were practical demonstrations, various materials and language instruction to learn other culinary practices. It is reported that there was increasing work other than learning time and complication for preparing practice. In addition, they desire more websites for cooking need to be built. Plans for activating culinary education are as follow: First, how to enhance the professional abilities of culinary teachers. Second, to show the necessity of theoretical education, video-based education, and culinary practice demonstrations. Third, to show the necessity to increase the ratio for culinary practice classes. Fourth, to display various teaching and learning materials. Fifth, to enhance websites for culinary data. Sixth, to provide opportunities to augment a sense of achievement.

• 대한원격탐사학회지
• /
• 제8권2호
• /
• pp.131-145
• /
• 1992

A low cost personal computer and image processing S/W were empolyed to derive Digtal Elevation Model(DEM) of tidal flat from multitemporal LANDSAT TM images, and to create three-dimensional(3D) perspective views of the tidel flat on Komso bay in west coasts of Korea. The method for generation of Digital Elevation Model(DEM) in tidal flat was considered by overlapping techniques of multitemporal LANDSAT TM images and interpolations. The boundary maps of tidal flat extracted from multitemporal images with different water high were digitally combined in x, y, z space with tide in formation and used as an inputcontour data to obtain an elevation model by interpolation using spline function. Elevation errors of less than $\pm$0.1m were achived using overlapping techniques and a spline interpolation approach, respectively. The derived DEM allows for the generation of a perspective grid and drape on the satellite image values to create a realistic terrain visualization model so that the tidal flat may be viewed from and desired direction. As the result of this study, we obtained elevation model of tidal flats which contribute to characterize of topography and monitoring of morphological evolution of tidal flats. Moreover, the modal generated here can be used for simulation of innudation according to tide and support other studies as a supplementary data set.

• Computers and Concrete
• /
• 제24권2호
• /
• pp.137-150
• /
• 2019

In this paper, surrogate models such as multivariate adaptive regression splines (MARS) and M5P model tree (M5P MT) methods have been investigated in order to propose a new formulation for the 28-days compressive strength of self-compacting concrete (SCC) incorporating metakaolin as a supplementary cementitious materials. A database comprising experimental data has been assembled from several published papers in the literature and the data have been used for training and testing. In particular, the data are arranged in a format of seven input parameters covering contents of cement, coarse aggregate to fine aggregate ratio, water, metakaolin, super plasticizer, largest maximum size and binder as well as one output parameter, which is the 28-days compressive strength. The efficiency of the proposed techniques has been demonstrated by means of certain statistical criteria. The findings have been compared to experimental results and their comparisons shows that the MARS and M5P MT approaches predict the compressive strength of SCC incorporating metakaolin with great precision. The performed sensitivity analysis to assign effective parameters on 28-days compressive strength indicates that cementitious binder content is the most effective variable in the mixture.

• Journal of Korea Trade
• /
• 제23권7호
• /
• pp.1-12
• /
• 2019

Purpose - This paper empirically investigates the relationship between Information and Communication Technology (ICT) goods imports and economic growth with a focus on the 13 Asia-Pacific economies during 2005-2016. In particular, this paper extends the study by breaking down the data of Asia-Pacific countries into High Income Countries (HICs) and Low Income Countries (LICs) according to the difference of income levels. Design/methodology - Our empirical model employs the standard growth model based on the Barro (1998)-type growth framework. Using static panel-data technique, we estimate the effect of ICT goods imports on economic growth in the 13 Asia-Pacific economies. In addition, we also estimate a difference of the ICT goods imports-economic growth link between HICs and LICs. Findings -The estimation results indicate that ICT goods import has a significant positive effect on economic growth, while ICT goods export has a positive but statistically insignificant effect on it. When we break down the panel data into HICs and LICs in order to gain further insight, ICT goods imports has been effective in spurring growth in only LICs but not in HICs. The other supplementary results show that both domestic investment (GCF) and life expectancy (LE) have a significantly positive impact on economic growth in both HICs and LICs. Originality/value - The main findings of the paper suggest that ICT goods imports has a positive effect on economic growth in only LICs but not in HICs. This result supports the so-called 'leapfrogging' hypothesis through ICT goods imports in the Asia-Pacific countries, in which LICs are gaining more from ICT goods imports than HICs.

• 한국초등과학교육학회지:초등과학교육
• /
• 제39권2호
• /
• pp.155-167
• /
• 2020

This study analyzed reference data for the physics section in science guidebooks for the third-sixth grade in elementary schools, according to the 2015 revised curriculum. It analyzed the reference data by categorizing them in terms of subjects, objectives and presentation forms and the visual data used in the reference data by categorizing their types. The findings show that the ratio of the science knowledge type was highest (53.8%) among the subjects of reference data in guidebooks for the science section, followed by the application to real life, and then, supplementary inquiry experiments and activities. The ratios of other types such as advanced science, environment, scientists and science history were, however, less than 1%, so they need to be improved. The ratio of knowledge provision was highest (40.5%) among the objectives of reference data but the ratios of conceptual supplementation and deepening were similar in ratio. Meanwhile, While the expository type (88.4%) accounted for most of the present forms of reference data, and photographs and illustrations (93.6%) also accounted for most of visual data suggested with reference data. Thus more various types of presentation forms and the extension of visual data seemed to be needed. This study is expected to provide some suggestions for the meaningful use of reference data in guidebooks for teachers and for the development of science guidebooks for teachers in elementary schools.

• 한국문헌정보학회지
• /
• 제57권1호
• /
• pp.161-182
• /
• 2023

최근의 목록 환경에서 전거데이터의 기능이 특히 중요해지고 있다. 이에 따라 국내에서는 2019년부터 국가전거데이터의 공개와 공동 활용을 위한 시범사업을 추진하면서 국가전거를 활용한 단위 도서관의 전거데이터 소급 구축 방안을 모색하고 있다. 이 연구에서는 지난 2019년 국립중앙도서관과 KERIS에서 공동으로 추진했던 전거데이터 소급 구축을 위한 시범사업의 방식과 결과를 분석하고, 이 과정에서 나타난 방법론적 한계와 문제점을 분석한 후 보다 많은 도서관들이 국가전거를 활용하여 전거데이터의 소급 구축을 효율적으로 추진할 수 있도록 정책적 제언을 도출하는데 목적을 두었다. 이를 위해 시범사업에 참여한 A대학도서관을 사례로 하여, 전거데이터의 자동 생성률과 정확률, 그리고 자동 생성 과정에서 나타난 오류와 누락의 사례와 원인을 분석하였다. 연구결과, 국가전거를 이용한 전거데이터의 자동생성률은 20% 남짓에 불과했고, 전거형의 형식에 따라 편차가 큰 것으로 나타났다. 이러한 낮은 생성률과 오류, 누락은 종합목록이나 단위 도서관의 서지레코드 품질에서 비롯된 것이었고, 이에 따라 기존 데이터에 대한 보다 세밀한 검토와 함께 정교한 알고리즘을 개발, 적용할 필요가 있음을 확인할 수 있었다.

• 지능정보연구
• /
• 제22권4호
• /
• pp.157-176
• /
• 2016

스마트폰, 태블릿PC와 같은 모바일 기기의 확산과 더불어 앱의 보급도 크게 늘어나면서 우리 일상의 다양한 분야에서 활용되고 있다. 게임, 생활, 엔터테인먼트, 정보, 전자상거래 등 다양한 종류의 수많은 앱이 생겨나고 있으나, 그들 중 대부분이 사용자의 구매 선택조차 받지 못하고 있으며, 구매가 이루어진 이후에도 많은 수는 오랫동안 사용되지 않고 외면당하고 있다. 사용자가 앱을 선택하고 사용하는 데에 영향을 미치는 요인을 찾는 연구는 사용자에게 적합한 앱을 선별적으로 추천하는 데에 활용됨으로써 마케팅 효과를 높일 수 있다는 점에서 앱 개발자나 배포자 및 사용자 모두에게 기여하는 실무적 가치가 크다고 할 수 있을 것이다. 이런 관점에서, 본 연구는 앱의 사용에 영향을 미치는 요인이 앱 유형별로 어떻게 달라지는지를 파악하려는 목적에서 수행되었다. 앱 사용에 영향을 미치는 요인으로서 사용자의 인구통계학적 특성뿐만 아니라 사용자가 앱을 구매하고 사용한 경험, 구매 시 참고한 앱에 대한 객관적 평가인 별점, 마케팅의 수단으로서 상품의 소개 화면에 노출되는 배지(Badge)의 영향을 살펴보았다. 사용자의 앱 선택에 영향을 미치는 요인에 대한 기존 연구들은 대부분 설문에 대한 응답 결과를 분석에 사용함으로써 사용기록이 정확히 반영하지 못하는 한계점을 갖는 반면, 본 연구는 특정한 기간 동안 사용자의 실제 사용기록 전체를 측정하고 수집하여, 이 데이터를 기반으로 분석을 실시했다는 점에서 큰 의의를 갖는다고 할 수 있다. 사용자가 자신의 모바일 기기에 설치된 다양한 앱을 설치해놓고 이들 중 자신의 필요에 적합한 것을 선택하여 사용하게 되는데, 이 선택에 영향을 미치는 요인이 카테고리 별로 다를 것이라는 점을 고려하여, 다변량 프로빗 모형을 활용하여 분석을 실시하였다. 분석결과로 앱 사용에 영향을 미치는 요인이 앱 카테고리 별로 달라지는 것과 앱 카테고리 선택 간의 상관관계를 제시하였으며, 사용자의 앱사용 목적에 따라 쾌락성(Hedonic)과 실용성(Utilitarian)으로 구분지어 설명하였다.

• 수산해양교육연구
• /
• 제27권2호
• /
• pp.399-413
• /
• 2015

This study was to validate the WSSECT (Workplace Spirituality Scale for Early Childhood Teacher) using discriminant analysis on early childhood teachers' happiness and job satisfaction. The data from 504 teachers working at kindergartens and daycare centers were analyzed statistically through t-test and discriminant analysis. The results indicated that 1) the higher group in workplace spirituality significantly gets more scores of happiness and job satisfaction than the lower group, 2) 4 factors of the WSSECT have discriminant power on early childhood teachers' happiness, and 3) 2 factors ('meaning for life' and 'calling for ECE teacher job') of the WSSECT are effective to discriminate early childhood teachers' job satisfaction. Further statistical works are supplementary needed to validate the WSSECT and to increase its'feasibility.

• 한국수학교육학회지시리즈D:수학교육연구
• /
• 제19권4호
• /
• pp.247-265
• /
• 2015

Mathematics textbook plays a significant role in shaping students' learning of mathematics. Logic, rigor and abstraction as typical features of the formalization of mathematics, dominate mathematics textbooks around the world, which is regarded as one of the important origins of students' learning difficulties in mathematics. An innovative series of Chinese mathematic textbooks is presented in this paper. Supported by the supplementary materials excerpts from the textbooks, it gives a comprehensive theoretical analysis of the principles of design and implementation of this series of mathematics textbooks. The effectiveness of this series of textbooks is demonstrated by student achievement and secondary research data. It shows that series of Chinese mathematic textbooks has largely decreased students' learning difficulties in mathematics and enhance classroom teaching efficiency. It suggests that prioritizing the essence of mathematics and reducing abstraction is an important notion for mathematics textbook design and implementation.