• The Transactions of the Korea Information Processing Society
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• v.6 no.7
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• pp.1841-1848
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• 1999

DELVAUX is a genetics-based inductive learning system that learns a rule-set, which consists of Bayesian classification rules, from sets of examples for classification tasks. One problem that DELVAUX faces in the rule-set learning process is that, occasionally, the learning process ends with a local optimum without finding the best rule-set. Another problem is that, occasionally, the learning process ends with a rule-set that performs well for the training examples but not for the unknown testing examples. This paper describes efforts to alleviate these two problems centering on the N-version learning approach, in which multiple rule-sets are learning and a classification system is constructed with those learned rule-sets to improve the overall performance of a classification system. For the implementation of the N-version learning approach, we propose a decision-making scheme that can draw a decision using multiple rule-sets and a genetic algorithm approach to find a good combination of rule-sets from a set of learned rule-sets. We also present empirical results that evaluate the effect of the N-version learning approach in the DELVAUX learning environment.

• Proceedings of the KIEE Conference
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• 2005.07d
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• pp.2900-2902
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• 2005

본 논문에서는 환경과 시스템의 상호작용을 통한 경험에 의해 습득된 정보를 개체간 네트워크를 통하여 갱신하는 과정을 구성하는 연구를 하였다. 기존의 연구에서는 강화학습 알고리즘을 이용하여 임의의 구역에 대한 지도 정보를 습득하고 이를 바탕으로 개체들 각각의 최적의 행동 정책을 구성하는 바 이 때 각각의 체개체가 가지고 있는 최단경로에 대한 정보의 우위를 결정하는 과정을 추가하였다. 이를 바탕으로 최종적으로 선택된 경로에 대한 정보를 업데이트하여 구성 된 네트워크를 통한 개체간 데이터를 동시에 공유하는 과정을 거쳐서 각각의 시스템이 스스로 정보를 갱신하는 방법을 제안하였다 또한 이 제안한 개념의 적합성을 입증하기 위하여 개체간의 정보를 통합하고 비교하는 실험을 수행하여 성공적인 결과를 얻었다.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.11a
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• pp.85-86
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• 2009

본 논문에서는 무인비행체를 위한 듀얼 카메라 영상처리 시스템을 제안하였다. 제안된 시스템에서는 무인비행체에서 카메라 시스템을 운용함에 있어서 효율성을 극대화하기 위해 두 개의 카메라를 이용한 영상정보의 습득 및 처리 방법을 제안하였다. 영상의 습득과 프로세싱 과정에서는 OpenCV와 FF-MPEG을 활용한 영상의 분석과 압축을 구현하였다. 무인비행체에서의 데이터 전송은 디지털 광대역 통신인 와이브로를 이용하였다. 또한 지상스테이션은 데이터를 전송받아 영상을 확인하고 무인비행체조작과 카메라조작 명령을 내리는 역할을 담당하도록 하였다.

• Journal of The Korean Association of Information Education
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• v.9 no.4
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• pp.649-659
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• 2005

A window presentation style, either tiled window or single page design, determines the spatial arrangement of information in a modern computer-based instructional design. This study investigates the interaction between spatial ability and window presentation style in terms of student's achievement of cognitive knowledge through Web-based instruction. Seventy-one students from the Falk School in Pennsylvania were pre-tested to determine their level of spatial ability, then randomly divided into two treatment groups in order to study a Web-based instructional unit on flowering plants. The Web-based instructional package was organized with either tiled window presentation or single page presentation. A posttest measured participants'acquisition of the instructional content. Posttest and spatial ability test scores were analyzed using multi-variate linear regression for the full sample (n=71) and three sub-samples: (a) 4th and 5th grade students only, (b) female students only, and (c) 4th and 5th grade female students only. The goals of the data analysis included the examination of (i) the correlation between spatial ability and posttest scores; (ii) the correlation between window presentation style and posttest score; and (iii) the interaction between spatial ability (aptitude) and presentation style (treatment).The data from all four sample groups showed a significant relationship between spatial ability and achievement of cognitive knowledge at the 1% level of significance. The aptitude-treatment interaction between spatial ability and style of window presentation was not significant in the full sample, but was significant in the sub-samples either at the 10% or 5% level. In neither the full sample nor any sub-sample data did window presentation style have an impact on average posttest score. In all analyses, the higher the level of spatial ability, the higher the posttest score. The sub-samples revealed that students with low spatial ability performed better with the tiled window presentation, while those with high spatial ability did better with the single page presentation. Neither window presentation style was shown to better foster learning by children of all levels of spatial ability.

• Annual Conference on Human and Language Technology
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• 1995.10a
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• pp.281-281
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• 1995

• Digital Contents
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• no.6 s.85
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• pp.30-39
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• 2000

이미 디지털콘텐츠의 시대가 도래했다. 정보의 습득과 저장, 배포에 이르기까지 새로운 패러다임이 짜여지고 있다. 이는 검색엔진, 시스템관리 등 인터넷을 위한 정보관리에 있어 여러가지가 동시에 이뤄져야 한다. 종이의 시대는 점차 그 위력이 약해 질 것이며 디지털 시대로의 급선회하는 시점에서 짚고 가야할 것들을 챙겨보자

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.12
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• pp.5808-5815
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• 2012

Through Tourism Information System, we can know, how much we feel importance of travel information and how to they spending, research when they need to go to travel according to we have to realize about anticipation/planning phase and on-site phase are different exactly. This purpose is how to get a basic data when we support with tourist about information of festival in travel and also how to give satisfaction for tourist and how many tourist wants to join the travels in addition, it is possible to we can develop all of things about travel informations. This is a result of research. First, all of the tourists participate the FESTIVAL, even though they didn't get any informations about travel. The second, information of festival in travel has different feeling between importance of participate in festival and performance after experience.

• Journal of Food Hygiene and Safety
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• v.31 no.3
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• pp.176-185
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• 2016

This study was performed to investigate elementary school children's awareness on children's favorite foods and their consumption behavior of the foods. This study also focused on the association between the variables and gender/grade. We conducted a cross-sectional survey with direct interview among three hundreds and six elementary school children (188 boys and 118 girls) from 13 schools of a city of Korea, using a structured questionnaire. Among the overall proportion, more than 20% of the respondents did not know children's favorite foods and/or have no information source on the foods. More than 60% of the respondents consumed children's favorite foods more than 1 to 2 times a week. Only 16% respondents got information on children's favorite foods at home and 37% at school. There were significant correlations (p < 0.05) between gender/grades and knowledge/route of information on children's favorite foods. Boys had more knowledge than girls (p < 0.05), however they showed worse attitude on children's favorite foods and consumed more the foods. The higher grade children had more knowledge, better attitude and various routes of information on children's favorite foods (p < 0.05), but consumed more the foods. The results of this study indicate that there is a discrepancy between knowledge and attitude/behavior. This study also indicate that school food-service program and food hygiene/safety education in school and at home should be improved. Strong implementation of laws for regulation of selling adulterated food around elementary school may be another step in controlling consumption of the food by school children.

• Proceedings of the Korean Society of Computer Information Conference
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• 2015.07a
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• pp.339-340
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• 2015

시각장애인은 주변 인지 장애로 정보 습득이 어렵고, 공간 정보 습득에 있어서 제약이 있는 신체조건으로 이동에 불편을 겪는다. 또한 특정 상황에서 적절한 분위기를 인지하고 그에 맞는 대응을 하기가 어렵다. IoT 시대에 맞춰 홈 네트워크 시스템이 널리 보급되어지는 추세이지만, 여전히 시각장애인이 사용하기에는 많은 어려움이 있고, 불편을 호소하는 게 현실이다. 본 논문에서는 이러한 시각장애인을 위해 스마트폰을 이용해 음성으로 집안의 사물을 원격 제어하는 구글 음성인식 홈 리모트 컨트롤 시스템을 제안한다.

• 한국IT서비스학회:학술대회논문집
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• 2002.06a
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• pp.152-157
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• 2002

컴포넌트 기반 개발 프로세스는 그 동안의 구조적 분석/설계 기법과 정보공학, 객체지향 등의 공학적 분석기술을 수용하고 있다. 따라서 CBD를 적용하려는 조직은 다양한 소프트웨어 공학적 기법과 아키텍처 설계 기술들을 습득해야 하였다. 또한 CBD의 핵심 역량인 반복적 개발 프로세스와 아키텍처 설계 역량을 갖추기 위해 각 개발업체 들은 CBD기술의 도입초기에 상당한 혼돈과 어려움을 겪어야 했다. 이에 본 논문에서는 CBD를 조직차원에서 습득하고 적용하는 과정을 5개의 단계로 나누고 각 단계의 목표를 설정한 컴포넌트 개발 프로세스 성숙도 모형을 제시한다. CDMM(Component based Development capability Maturity Model)으로 명명한 본 개발 능력 성숙도 모형은 소프트웨어 개발조직이 CBD를 습득하기 위해 어떤 단계를 거쳐야 하는지 또한 컴포넌트 개발을 위한 핵심기술이 어떤 것들인지를 제시한다. 이는 향후 CBD를 확산시키고 컴포넌트 기술을 통한 생산성향상과 소프트웨어 개발비 절감을 위해 기업과 국가의 정책적 지표로 활용할 수 있을 것이다.