• 공학교육연구
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• 제16권1호
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• pp.35-44
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• 2013

The purpose of this study is to develop an examination system for an e-learning quality manager's certificate which is composed of subjects, criteria, method of examination. The task model of e-learning quality manager was modify and task/knowledge/skill matrix was developed to design the examination system through conferences of DACUM committee and an advisory committee. And a survey was carry out to analyze validity of contents of the examination system. The major findings were as the follow: First, occupational specification, job specification, task specification and task/knowledge/skill matrix were developed. Second, examination subjects were developed based on task/knowledge/skill matrix, which were "Basis of e-Learning and plan of service", "Expulsion and management of e-learning infrastructure", "Development of e-learning contents", "Operation and evaluation of e-learning service". Third, the criteria and methods of examination for an e-learning quality manager's certificate were developed, which is composed of test type, the sum of test items, test time and acceptable standards.

• 대한전기학회논문지:전력기술부문A
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• 제55권9호
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• pp.351-358
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• 2006

In this paper, DSPOCS(Digital Switchgear-Panel Operation and Control Solution) is designed, which is the intelligent inference based operation and control solution to obtain the safety and reliability of electric power supply in substation based on IED. DSPOCS is designed as a scheduled monitoring and control task and a real-time alarm inference task, and is interlinked with BRES(Bus Reconfiguration Expert System) in the required case. The intelligent alarm inference task consists of the alarm knowledge generation part and the real-time pattern matching part. The alarm knowledge generation part generates automatically alarm knowledge from DB saves it in alarm knowledge base. On the other hand, the pattern matching part inferences the real-time event by comparing the real-time event information furnished from IEDs of substation with the patterns of the saved alarm knowledge base.; Especially, alarm knowledge base includes the knowledge patterns related with fault alarm, the overload alarm and the diagnosis alarm. In order to design the database independently in substation structure, busbar is represented as a connectivity node which makes the more generalized graph theory possible. Finally, DSPOCS is implemented in MS Visual $C^{++}$, MFC, the effectiveness and accuracy of the design is verified by simulation study to the typical distribution substation.

• Journal of Information Processing Systems
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• 제17권5호
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• pp.867-878
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• 2021

In context awareness and user intention tasks, dataset construction is expensive because specific domain data are required. Although pretraining with a large corpus can effectively resolve the issue of lack of data, it ignores domain knowledge. Herein, we concentrate on data domain knowledge while addressing data scarcity and accordingly propose a multi-channel long short-term memory (LSTM). Because multi-channel LSTM integrates pretrained vectors such as task and general knowledge, it effectively prevents catastrophic forgetting between vectors of task and general knowledge to represent the context as a set of features. To evaluate the proposed model with reference to the baseline model, which is a single-channel LSTM, we performed two tasks: voice phishing with context awareness and movie review sentiment classification. The results verified that multi-channel LSTM outperforms single-channel LSTM in both tasks. We further experimented on different multi-channel LSTMs depending on the domain and data size of general knowledge in the model and confirmed that the effect of multi-channel LSTM integrating the two types of knowledge from downstream task data and raw data to overcome the lack of data.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 A
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• pp.141-142
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• 2006

In this paper, DSPOCS(Digital Switchgear Panel Operation and Control Solution) is designed, which is the intelligent inference operation and control solution of substation based on IED. DSPOCS is designed as a scheduled monitoring and control task and a real-time alarm inference task, and is interlinked with BRES in the required case. The intelligent alarm inference task consists of the alarm knowledge generation part and the real-time pattern matching part The alarm knowledge generation part generates automatically alarm knowledge from DB and saves it in alarm KB. On the other hand, the pattern matching part inferences the real-time event by comparing the real-time event information furnished from IEDs of substation with the patterns of the saved alarm knowledge base.

• 한국과학교육학회지
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• 제22권2호
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• pp.314-335
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• 2002

The purpose of this study was to investigate the effects of students' prior knowledge on scientific reasoning process performing a task of controlling variables with computer simulation and to identify a number of problems that students encounter in scientific discovery. Subjects for this study included 60 Korean students: 27 fifth-grade students from an elementary school; 33 seventh-grade students from a middle school. The sinking objects task involving multivariable causal inference was used. The task was presented as computer simulation. The fifth and seventh-grade students participated individually. A subject was interviewed individually while the investigating a scientific reasoning task. Interviews were videotaped for subsequent analysis. The results of this study indicated that students' prior knowledge had a strong effect on students' experimental intent; the majority of participants focused largely on demonstrating their prior knowledge or their current hypothesis. In addition, studnets' theories that were part of one's prior knowledge had significant impact on formulating hypotheses, testing hypothesis, evaluating evidence, and revising hypothesis. This study suggested that students' performance was characterized by tendencies to generate uninformative experiments, to make conclusion based on inconclusive or insufficient evidence, to ignore, reject, or reinterpret data inconsistent with their prior knowledge, to focus on causal factors and ignore noncausal factors, to have difficulty disconfirming prior knowledge, to have confirmation bias and inference bias (anchoring bias).

• 한국산업정보학회논문지
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• 제26권6호
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• pp.17-34
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• 2021

지식관리가 조직 성과에 중요한 조건으로 인식되면서, 조직들은 지식관리 정책 및 기술에 대한 투자를 증가시키고 있다. 지식관리가 성과를 도출하기 위해서는 개인이 보유하고 있는 좋은 지식을 지속해서 공유하는 것이 필요하다. 본 연구는 개인의 지식관리시스템을 통한 지식공유 의도에 미치는 긍정적, 부정적 원인을 제시하고, 조직 공유 분위기가 미치는 영향을 제시하는 것을 목적으로 한다. 연구는 선행연구를 통하여 연구 모델 및 가설을 제시하였으며, 지식관리시스템을 도입한 조직에 근무하는 조직원을 대상으로 설문지 기법을 통해 417개의 표본을 확보하였다. 그리고 구조방정식모델링을 실시하여 가설 검증을 하였다. 분석 결과, 지식관리시스템에 대한 유용성과 이용 용이성이 지식공유 의도에 긍정적 영향을 주었으며, 업무 갈등과 모호성이 부정적 영향을 주었다. 지식공유 분위기는 기술수용모델과 업무 스트레스에 각각 선행 요인으로서 영향을 주었다. 또한, 업무 스트레스는 유용성과 이용 용이성의 지식공유 의도에 미치는 영향을 조절하였다. 결과는 지식관리시스템 도입 시 고려해야 할 개인의 긍정적, 부정적 동기를 제시하였으며, 조직 차원에서 추진해야 할 방향성을 제시한 것에서 시사점을 가진다.

• 한국콘텐츠학회논문지
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• 제18권5호
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• pp.376-385
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• 2018

본 연구는 3차원 멀티미디어를 활용한 모바일 과제정보 제시가 치아카빙지식, 수행 및 실습만족도에 미치는 효과를 검증하고자 하였다. 이러한 연구목적을 달성하기 위하여 치의학 전공 대학생 66명을 대상으로 3D 모델링 어플리케이션을 활용한 실험집단과 텍스트와 삽화로 구성된 2차원 수업자료를 활용한 통제집단에 각각 33명씩 배정하여 실험을 하였다. 연구결과 첫째, 2차원 수업자료를 활용한 과제정보 집단(통제집단)이 3차원 멀티미디어를 활용한 모바일 과제정보 집단보다 치아형태에 대한 이해가 높은 것으로 나타났다. 둘째, 3차원 멀티미디어를 활용한 수업이 학생들의 치아카빙 수행 능력 향상에서 유의미한 효과가 나타났다. 셋째, 3차원 멀티미디어를 활용한 모바일 과제정보 제시 집단의 수업만족도가 통제집단보다 더 높은 것으로 나타났다. 따라서 치아형태학 수업에서 3D 모델링을 제공하는 것은 수업만족도를 높여주며, 치아카빙 수행 향상을 돕는 교육콘텐츠로 활용이 가능할 것으로 보인다.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 2004년도 춘계학술대회 학술발표 논문집 제14권 제1호
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• pp.111-114
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• 2004

Management of human knowledge is an interesting concept that has attracted the attention of philosophers for thousands of years. Artificial intelligence and knowledge engineering has provided some degree of rigor to the study of knowledge systems and expert systems(ES) re able to use knowledge to solve the problems and answer questions. Therefore, the process of conceptualization and inference of knowledge are fundamental problem solving activities and hence, are essential activities for solving the problem of software ES construction Especially, the access to relevant, up-to-date and reliable knowledge is very important task in the daily work of physicians and nurses. In this study, we propose the conceptualization and inference mechanism for implicit knowledge management in medical diagnosis area. To this purpose, we combined the dynamic knowledge map(KM) and relational database(RDB) into a dynamic knowledge map(DKM). A graphical user-interface of DKM allows the conceptualization of the implicit knowledge of medical experts. After the conceptualization of implicit knowledge, we developed an RDB-based inference mechanism and prototype software ES to access and retrieve the implicit knowledge stored in RDB. Our proposed system allows the fast comfortable access to relevant knowledge fitting to the demands of the current task.

• 융합정보논문지
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• 제11권7호
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• pp.91-103
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• 2021

지식경영이 조직의 중요한 역량으로 인식되면서, 조직들은 지식경영 정책, 기술 등에 지속적으로 투자를 하고 있다. 지식경영은 조직원의 핵심 지식에 대한 공유가 선제적으로 요구되나, 지속적인 지식경영 활동을 위한 공유 활동이 이루어지지 못하고 있다. 본 연구의 목적은 조직의 협력적 커뮤니케이션을 통한 상호 교환 노력이 구성원의 지식공유 의도에 미치는 영향을 검증하는 것이다. 연구는 지식경영 정책을 도입한 조직의 근로자들을 대상으로 설문을 하였으며, 326개의 표본을 구조방정식모델링에 적용하여 연구 가설을 검증하였다. 분석 결과, 협력적 커뮤니케이션 구성 요인(합리성, 상호 피드백, 공식성)이 지식공유 의도에 긍정적 영향을 주었으며, 업무 상호의존성과 지식 영역성이 협력적 커뮤니케이션과 지식공유 의도 간의 관계를 조절하였다. 연구는 구성원의 지식공유 향상을 위해 조직이 추진해야 할 활동 전략을 제시하였다는 측면에서 시사점을 가진다.

• 말소리와 음성과학
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• 제10권4호
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• pp.53-66
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• 2018

This study investigated the development of English phonological awareness in preschool children based on a longitudinal study. It carried out a phonological matching task, mispronunciation task, articulation test, explicit phoneme awareness task, rhyme matching task, and initial-phoneme matching task for three-, four- and five-year-old children. A letter knowledge test was also added to the tests for the 5-year-old children. The results revealed that the development of phonological awareness follows a progression of syllable, then onset and rhyme, then phoneme. It was also revealed that language skills such as vocabulary, detection of mispronunciations, and articulation were partially related to the development of phoneme awareness. Finally, we also found that letter knowledge partially affected the children's development of phonological awareness.