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수기문서 전자화 프레임워크 기반의 교육시설 하자관리 시스템
손봉기,Son, Bong-Ki 한국교육녹색환경연구원 2010 교육·녹색환경연구 Vol.9 No.3
In the construction industry, IT based information system has been diversely applied to increase productivity. Although IT device such as PDA, RFID, Barcode, wireless network and web camera has been introduced to gather information in construction site, the effect of the IT device is limited, because of bringing about additional works of engineer. In this paper, we proposed a defect management system which is based on handwritten document digitalization framework for introducing applicability of new IT device, digital pen. By the proposed system, we can effectively gather and input defect information to defect management system by using digital pen and paper like conventional way. Applying the data gathering device, digital pen to defect management, it is able to increase productivity by improving work process, building up and utilizing defect information database of good quality.
신뢰 정보를 이용하는 하이브리드 P2P 파일 공유 시스템
손봉기,김학준 한국지능시스템학회 2006 한국지능시스템학회 학술발표 논문집 Vol.16 No.1
P2P 파일 공유 시스템은 중앙 서버를 거치지 않고 피어 컴퓨터들 간의 직접적인 자원 공유로 특정지워지는 P2P 기술의 대표적인 응용으로, 사용자는 인터넷을 통해 원하는 파일을 쉽게 검색, 획득, 유포할 수 있다. 그러나 악의적인 사용자가 허위 파일이나 바이러스를 유포할 수 있어, 허위파일로 인한 재전송이 빈번해짐으로써 네트워크 트래픽이 증가하고, 바이라스로 인한 피해가 발행할 수 있다. 또한, 자신의 파일에 대한 공유없이 다른 사용자들의 공유 파일만 다운로드하는 free riding 문제가 발생할 수 있다. 이 논문에서는 사용자의 파일 공유 트랜잭션 정보에 기반한 신뢰 정보를 이용하여 P2P 파일 공유 시스템의 문제점을 보완할 수 있는 시스템을 제안한다. 제안한 시스템에서 중앙 서버는 사용자의 파일 공유 트랜잭션 피드백을 이용하여 사용자 신뢰도를 구하여 허위파일이나 바이러스를 유포하는 악의적인 사용자나 free rider에 대해 시스템 사용을 제한한다. 사용자는 파일 다운로드 시에 중앙 서버로부터 사용자 메타데이터를 수신하여 자신의 선호도를 반영한 파일 신뢰도를 이용함으로써 허위파일이나 바이러스를 다운로드할 위험을 줄인다.
손봉기,한상훈,이건명 충북대학교 컴퓨터정보통신 연구소 2001 컴퓨터정보통신연구 Vol.9 No.1
개념들 사이의 일반화 관계를 나타내는 개념 계층을 이용한 연관 규칙 마이닝에서는 개념들 사이의 관계가 명확한 경우만을 고려하고 있다. 이 논문에서는 개념들 사이의 관계가 애매한 경우까지 나타낼 수 있는 퍼지 개념 계층을 이용한 연관 규칙 마이닝 방법을 제안한다. 제안한 방법에서는 마이닝할 트랜잭션 데이터베이스를 표현하는 방법과 상위 개념 수준에서의 연관 규칙 마이닝을 위해 퍼지 개념 계층을 참조해 상위 개념 트랜잭션 데이터베이스를 생성하는 방법에 대해 기술한다. 또한 생성된 트랜잭션 데이터베이스에 대해 빈발 항목 집합을 생성하는 알고리즘을 소개하고, 실험 과정을 통해 제안된 알고리즘의 유용성을 보인다. The conceptual association rule mining methods, which use concept hierarchies representing generalization relationship among concepts, take into account only the cases that the generalization relationships are clear. In this paper, we propose an association rule mining method that adopts fuzzy concept hierarchies. which are capable of representing ambiguous relationships among concepts. It describes the way to represent transaction database to mine and the way to crate higher concept transaction database by referencing fuzzy concept hierarchies for association rule mining in higher concept level. In addition, it presents the algorithm that creates frequent item set from transaction database, and shows the applicability of the proposed method with some experiments.
한국 농촌주민의 연상검사에 대한 예비적 연구 : 충북 청원군 낭성면 주민을 중심으로
손봉기 大韓神經精神醫學會 1979 신경정신의학 Vol.18 No.1
The preliminary study of Jung's association test was done with the subjects of 50 rural people, who were all thought to be normal, and was investigated under such various viewpoints as the types of association, complex marks and so on. The results are as follows. 1. The average reaction times are 2.25 sec. In male subjects and 2.75 sec in female ones, whose difference is statistically significant. And under the control with the level of intelligence, the group educated above primary school (2.29 sec.) shows shorter reaction time than less educated one (2.61 sec.), which is statistically not significant. 2. The subjects show the tendency to clothe the reaction in the stimulus-word but it is limited by the influence of the law of frequency. Nouns as stimulus-words show the greatest agreement in the form (grammatic) with the reaction words. 3. Internal associations are predominated in both sexes with such ratios between internal versus external association as 49:44 in male, and 45:43 in female. Internal association is least produced in cases of adjective-stimuli. 4. The quality of the stimulus-word exerts a certain influence on the reaction time. The average shortest times follow adjectives (2.2 sec., the longest follow abstract nouns (2.9 sec.). 5. The quality of the reaction seems to have a certain influence on the length of the reaction time. The longest occur with abstract nouns (2.6 sec.), the shortest with concrete nouns (2.2 sec.). 6. The quality of the association has a distinct influence on the reaction time. Internal associations (2.6 sec.) command longer reaction times than external ones (2.0 sec.). 7. The stimulus-words which show the prolonged reaction time are, in the order of frequency, 19. pride, 73, box, 33, pity39 custom, 50. unjust, 52. to part, 60. to marry 69. part, 81. deportment, 92. to choose, 93. hay, 7. ship, 56. to pay attention, and so on. 8. The reaction with reproduction disturbance take longer reaction times than the median reaction time with the probability of 63.1% and otherwise, the immediately preceding reaction times, whose arithmetic mean is 3.4 seconds, used to be prolonged more than the median reaction time in he majority cases. 9. The reproduction disturbances would occur in series (48%). The longest reaction time is noted in the cases with three succeeding reproduction disturbances (4.8 sec.). 10. It was not confirmed here that the longer the individual reaction time is, the more the reproduction disturbance occurs. 11. The stimulus-words which show many complex marks, are, in order, 19. pride, 52. to part, 39. custom, 50. unjust, 81. deportment, 7. ship, 28. to sin 8. to pay, 33. pity, 33. and so on. 12. Some stimulus-words seem to be rare, meaningless, and hardly comprehensive. These are 2. green, 7. ship, 17. lake, 26. blue, 39. custom, 52. to part, 67. carrot, 81. deportment, 97. month, etc. Some changes in the forms of these stimulus-words are thought to be needed. 13. With regard to the contents of the complexes, this study is grossly in accord with Lees' except those complexes about love and death, i.e., erotic complex and death complex which are far less conspicuous in this study than the latter. 14. It was acknowledged through case analysis that Jung's association test is practically applicable to Korean, with some technical problems. 15. It was thought to be needed that a proper form of association test fitted to Korean with the basis on Korean custom and nationality, should be developed rather than using Jung's association test as it is.