Expert systems are popular ways to solve very complex and hard problems. However, it is well-known that knowledge acquisition is a bottleneck process to develop them. Furthermore, the development of the systems can fail because there is no expert or an expert less qualified. In order to overcome the problems that they possess, this thesis focuses on an extended architecture of the expert systems. A simulator and an induction system are added to the existing architecture of expert systems. An expert system for schedule-based material requirements planning(SBMRP) has been implemented to show how the extended architecture works, and produces better results than existing SBMRP systems.

The purpose of the study was to investigate the perception and the knowledge of the Korean traditional foods in elementary school students. For the investigation, 373 fifth-grade elementary school students in Incheon were surveyed by a questionnaire, and the data were analized by the SPSS 10.0 program. The result showed that 85% of the surveyed schoolchildren showed the interest in the Korean traditional foods. It also revealed that female students are more interested in the traditional food than male students and the children of the career woman are more interested than those of the housewives. As for the motive of their interest, 39.7% of the subjects answered 'through mass media'. Male students and the children of the housewives got the interest through their mother, and female students and the children of the career woman got the interest through their hobby of cooking food. Among the traditional foods, 76.4% of the children designated kimchi as the most proud traditional food. As for the reasons of reducing traditional food use, 39.9% of students responded because of 'not-tasty' and 28.7% of students replied because of 'not enough time to cook'. But 62.2% of the subjects thought the traditional foods should be more used in the future. As for the succession and development of the traditional foods, 33.8% of the subjects said it should be carried out by the family. The basic knowledge score of the traditional foods was 5.78 on a scale of 10, which showed relatively low level. The lower their basic knowledge, the less their interest in the traditional foods was. The samgyetang, ogokbap and bindaetteok were the most perceived traditional foods. The cheonggukjang, nabakgimchi and jindallaehwajeon were the foods they had seen, but the they didnot have heard or seen the others. Among the traditional foods, susugyeongdan, jindallaehwajeon and dasik were more perceived by the schoolchildren in the rural area than those in the urban area. The jindallaehwajeon and dasik were more perceived by female students than by male students. Therefore, in order to make elementary schoolchildren take the traditional foods with pride by increasing their perception and knowledge of them, the family should give them many opportunities to eat traditional foods. The school also should try to establish a cooperative relationship to the family of schoolchilderen and use more Korean traditional foods in the school's meal program. Furthermore, the society's concern and support are necessary and also the role of mass media, which have great influence on children, is important.

This paper aimed to examine core factors of the knowledge management and analyze their effects on organizational performance (employee satisfaction and competitive advantage). To accomplish this purpose, this study examined previous studies and summarized

목적 : 본 연구는 수행에 대한 지식과 결과에 대한 지식이 정신지체 성인의 운동 학습에 미치는 영향을 알아보기 위함이다. 연구방법 : 한 명의 정신지체 성인 여성이 연구에 참여하였고 교대중재 방법을 적용하였다. 운동학습 과제는 기능적으로 독립된 두 가지의 서로 다른 타이핑 하기였고, 결과에 대한 지식을 제공하는 타이핑과 수행에 대한 지식을 제공하는 타이핑을 연습하게 했다. 그 이후 훈련 직후, 훈련 후 1시간 경과 후에 기초선 측정과 같은 방법으로 수행 시간과 실패율(%)을 측정하였다. 또한 훈련 효과의 보존을 알아보기 위해 이틀이 경과한 후에 다시 측정하였다. 결과 : 두 중재 모두에서 운동 학습 과제에 대한 수행시간과 오류가 감소하였다. 연습 직후에서는 수행에 대한 지식 중재가 결과에 의한 지시 중재보다 과제 수행시간 단축 백분율이 높았지만, 연습 1시간 후와 유지기간에서는 결과에 대한 지식 중재가 수행에 의한 지식 중재보다 과제 수행시간 단축 백분율이 높았다. 수행에 대한 지식 중재보다 결과에 의한 지식 중재는 각 시점에서 실패율이 낮았다. 결론 : 결과에 대한 지식 중재는 수행에 대한 지식 중재에 비해 좀 더 빠르게 학습을 촉진하고 오래 유지하는 것으로 나타났다. 따라서 정신지체인의 운동학습을 촉진하기 위한 되먹임으로 결과에 대한 지식 중재방법을 사용하는 것이 효과적일 것으로 생각된다.

The purpose of this study was to examine the effects of self-controlled learning using the (KR) feedback schedule versus the yoked KR on the acquisition and retention of balance training for individuals with hemiplegics. Sixteen hemiplegics were randomly assigned to either a self-controlled or yoked KR group. All subjects were ambulatory with or without an assistive device. The self-controlled group was provided with feedback whenever they requested it, whereas the yoked group had no influence on the feedback schedule. All subjects performed 10 acquisition trials and 10 retention trials the day after acquisition. The data were analyzed using an independent t-test and a Mann-Whitney U test. Participants in the self-controlled group achieved significantly more effective learning than the yoked group during the acquisition and retention test except anterior/posterior (AP) body sway. These results suggest that a feedback schedule which is controlled by the individuals with hemiplegics may be more effective in balancing training than a yoked KR which is not controlled by the subject.

A framework for knowledge management system has been explored which enables the semantic search of knowledge on the web Knowledge representation by RDF and RDF schema enables machine cognition of knowledge documents. Dnblin core was adopted for structured

This study is aimed at investigating the influence of different quantitative knowledge of results on the measurement error during lumbar proprioceptive sensation training. Twenty-eight healthy adult men participated and subjects were randomly assigned into four different feedback groups(100% relative frequency with an angle feedback, 50% relative frequency with an angle feedback, 100% relative frequency with a length feedback, 50% relative frequency with a length feedback). An electrogoniometer was used to determine performance error in an angle, and the Schober test with measurement tape was used to determine performance error in a length. Each subject was asked to maintain an upright position with both eyes closed and both upper limbs stabilized on their pelvis. Lumbar vertebrae flexion was maintained at for three seconds. Different verbal knowledge of results was provided in four groups. After lumbar flexion was performed, knowledge of results was offered immediately. The resting period between the sessions per block was five seconds. Training consisted of 6 blocks, 10 sessions per one block, with a resting period of one minute. A resting period of five minutes was provided between 3 blocks and 4 blocks. A retention test was performed between 10 minutes and 24 hours later following the training block without providing knowledge of results. To determine the training effects, a two-way analysis of variance and a one-way analysis of variance were used with SPSS Ver. 10.0. A level of significance was set at .05. A significant block effect was shown for the acquisition phase (p<.05), and a significant feedback effect was shown in the immediate retention phase (p>.05). There was a significant feedback effect in the delayed retention phase (p<.05), and a significant block effect in the first acquisition phase and the last retention phase (p<.05). In conclusion, it is determined that a 50% relative frequency with a length feedback is the most efficient feedback among different feedback types.

A framework for knowledge management system has been explored which enables the semantic search of knowledge on the web. Knowledge representation by RDF and RDF schema enables machine cognition of knowledge documents. Dublin core was adopted for structured metadata representation. Thereby, it enables the CBR and rule based reasoning for intelligent knowledge retrieval. Grafting of the WFMS technique unto the KMS facilitates the effective utilization of process knowledge and creation of new knowledge.

본 연구는 학교습식의 위생안전성관리에 대한 학부모의 지식, 태도 및 행동 수준과 이에 미치는 요인을 알아보고자 수행되었다. 1개 도지역에서 직영급식을 실시하는 초등학교에 다니는 학생의 어머니를 무작위로 추출하였으며, 미리 개발된 설문지에 의하여 2001년 4월부터 5월 사이에 조사를 실시하였다. 설문조사는 응답자의 자기기입식으로 수행하였으며 응답자 301명의 자료를 통계적으로 분석하였다. 응답자의 점수에서 전반적으로 행동 수준(평균 2.89점)은 지식 수준(평균 4.48점)이나 태도 수준(평균 4.34점)에 비하여 유의하게 낮았다(p<0.05). 또 5개 범주(식품안전성관리, 종사자개인위생관리, 시설·설비·기구위생관리, 폐기물관리 및 기록유지관리)에서도 모두 그러한 경향을 보였다. 로지스틱 회귀분석 결과 응답자의 학교급식의 위생안전성관리에 대한 지식과 태도에 영향을 미치는 요인으로는 교육 수준이 비교적 많이 제시되었으나, 행동에 영향을 미치는 용인으로는 학교급식활동 참여 여부가 가장 많이 제시되었다. Pearson 상관분석 결과, 응답자의 지식과 태도 사이에 유의한 상관관계가 관찰되었다(r=0.61404, p<0.01). 이러한 결과는 응답자의 지식과 태도는 양호한 수준이나 지식과 행동 및 태도와 행동 사이에는 큰 격차가 있음을 제시한다. 학부모의 학교급식의 위생안전성관리에 대한 행동 수준을 향상시키고 또한 이러한 격차를 줄이기 위해서는 학교급식참여 프로그램을 강화 및 개발할 필요가 있다.