• The Journal of the Korea Contents Association
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• v.6 no.7
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• pp.99-110
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• 2006

Since learner-centered, participatory, real-situation education is stressed today, we need a new creative method for teaching computers to elementary school students. Nevertheless, there is scant research in this area. Therefore, in my study, I have analyzed the state of the methods of teaching computer literacy in the elementary schools. My aim is to develop a method of computer teaching in the real situation of elementary schools which will greatly improve the learning process. Creative teaching method gives students the initiation. And lead for then to join the activities for using the student's reciprocity. It is the students centered method. As a result of this study offering the educational teaching method of the creative teaching method for the improvement of computer literacy and learning attitude in the school society which has no knowledge brings the practical effects of computer attainments. Some limitation of the subject and theme of this investigation. Then requires the continual study for the of development creative teaching method with the extension experimental groups and educational subjects.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.38 no.5
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• pp.37-43
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• 2001

Since Internet has been used anywhere, illegal intrusion to a certain host or network become the ciritical factor in security. Although many anomaly detection models have been proposed using the statistical analysis, data mining, genetic algorithm/programming to detect illegal intrusions, these models has defects to detect new types of intrusions. THRE-KBANN (theory-refinement knowledge-based artificial neural network) which can learn continuously based on KBANN, is proposed for the anomaly detection model in this paper. The performance of this model is compared with that of the model based on data mining using the experimental data. The ability of continual learning for the detection of new types of intrusions is also evaluated.

• Management & Information Systems Review
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• v.4
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• pp.409-441
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• 2000

The purpose of this study is to present the problem of the introduction and management and the method of activation of the team organization in college administrative systems through the theoretical study about the team systems and the actual proof study already introduced and operated in colleges and enterprises. The scopes of the subject of theoretical study are the concept of team systems, the type of systems, the strategy of introduction and management, the problem of management and the tactics of activation. The scopes of the theoretical study are the field of systematic structure and that of introduction and management. In order to activate the team organization of college administrative systems, we must study three points such as empowerment, construction of learning team and the method of personal management. For the sake of conducting the team organization efficiently, we must consider four fields. They are as follows: First, considering the continual efforts for reorganization is the most important precondition. Second, the device of supplement related with introduction of systems such as evaluation of merits, promotion and budget must be prepared as soon as possible. Third, in order to introduce the systems, the improvement of systems is needed. Fourth, it must be accompanied by redesigning the whole business process. Especially, in the introduction of team organization, it is important above all to introduce suitable constitution or situation of business. And making a constant effort and preparation for solving problems is essential to successful management of team organization.

• Smart Structures and Systems
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• v.29 no.2
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• pp.361-374
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• 2022

As civil infrastructure has continued to age worldwide, its structural integrity has been threatened owing to material deteriorations and continual loadings from the external environment. Structural Health Monitoring (SHM) has emerged as a cost-efficient method for ensuring structural safety and durability. As SHM research has gradually addressed an increasing number of structure-related problems, it has become difficult to understand the changing research topic trends. Although previous review papers have analyzed research trends on specific SHM topics, these studies have faced challenges in providing (1) consistent insights regarding macroscopic SHM research trends, (2) empirical evidence for research topic changes in overall SHM fields, and (3) methodological validations for the insights. To overcome these challenges, this study proposes a framework tailored to capturing the trends of research topics in SHM through a bibliometric and network analysis. The framework is applied to track SHM research topics over 15 years by identifying both quantitative and relational changes in the author keywords provided from representative SHM journals. The results of this study confirm that overall SHM research has become diversified and multi-disciplinary. Especially, the rapidly growing research topics are tightly related to applying machine learning and computer vision techniques to solve SHM-related issues. In addition, the research topic network indicates that damage detection and vibration control have been both steadily and actively studied in SHM research.

• Annual Conference on Human and Language Technology
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• 2021.10a
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• pp.215-220
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• 2021

다중 도메인에 대해 답변 생성 모델이 동작 가능하도록 하는 가장 쉬운 방법은 모든 도메인의 데이터를 순서와 상관없이 한번에 학습하는 것이다. 하지만 이경우, 발화에 상관 없이 지나치게 일반적인 답변을 생성하는 문제가 발생한다. 이에 반해, 도메인을 분리하여 도메인을 순차적으로 학습할 경우 일반적인 답변 생성 문제를 해결할 수 있다. 하지만 이경우 새로운 도메인의 데이터를 학습할 때, 기존에 학습한 도메인에 대한 성능이 저하되는 파괴적 망각 현상이 발생한다. 파괴적 망각 현상을 해결하기 위하여 다양한 지속학습기법이 제안되었으며, 그 중 메모리 리플레이 방법은 새로운 도메인 학습시 기존 도메인의 데이터를 함께 학습하는 방법으로 파괴적 망각 현상을 해결하고자 하였다. 본 논문에서는, 사람의 기억 시스템에 대한 모형인 앳킨슨-쉬프린 기억 모형에서 착안하여 사람이 기억을 저장하는것과 유사한 방법으로 메모리 리플레이 방법의 메모리 관리방법을 제안하였고, 해당 메모리 관리법을 활용하는 메모리 리플레이 방법을 통해 답변 생성 모델의 파괴적 망각 현상을 줄이고자 하였다. 다중 도메인 답변 생성에 대한 데이터셋인 MultiWoZ-2.0를 사용하여 제안 모델을 학습 및 평가하였고, 제안 모델이 다중 도메인 답변 생성 모델의 파괴적 망각 현상을 감소시킴을 확인하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.9
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• pp.290-301
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• 2017

This research aimed to develop problem creating worksheets as a teaching & learning material for problem solving activities and assess its effectiveness. Activity worksheets for creative problem development were established. The effectiveness of the problem-creating classes taught to gifted students in invention was evaluated. In addition, effective strategies for encouraging problem creating and question making in teaching & learning processes were explored. The creative problem identification activity consisted of 5 steps, which are idea creation, convergence, execution, and evaluation. The results showed that elementary and middle school students taught in the classes using this problem-identification worksheet were highly satisfied with the program. This study concluded that it requires an educational environment, government level collaboration, and support to create a mature social atmosphere and educational environment motivating students to keep asking questions and identify problems. Through continual modification, additional ongoing efforts to increase the credibility and the quality of the worksheets as a creative problem solving and learning tool will be needed.

• Korean Journal of Applied Biomechanics
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• v.18 no.2
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• pp.95-104
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• 2008

The purpose of this study was to investigate kinematic coordination and control of lower segments in skill process. For the investigation, we examined the difference of resultant linear velocity of segments and angle vs angle graph. Novice subjects were 9 male middle school students who has never been experienced a taekwondo and expert subjects were 7 university taekwondo players. We analyzed kinematic variables of Dollyochagi motion through videographical analysis and the conclusion were as follows. 1. Examining the graph of novice subjects' maximal resultant linear velocity of the thigh, shank, and foot segment, as it gets closer to the end of the training, the maximal resultant linear velocity in each segment increased. Statistical analysis showed the following results; thigh segment caused the increase of speed, using the trunk segment's momentum in the latter term of learning, while the shank segment utilized the momentum of the adjacent proximal segment at the beginning of learning, and the foot segment in the middle of learning. 2. Until the point where the knee joint angle is minimum, as the novice group learn the skill, the flexion of knee and hip joints has changed into the form of coordination pattern in phase. On the other hand, the expert group showed continual coordination pattern in phase that the movement sequences were smooth. From the knee joint maximal flexion to impact timing, all novice and expert groups showed coordination pattern out of phase. 3. From the knee joint maximal flexion to impact timing, the ankle joint was fixed and the knee joint was extended to all the novice stages and expert subjects.

• Hwankyungkyoyuk
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• v.11 no.2
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• pp.1-13
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• 1998

The purpose of this study is to investigate thel present situation and to analyze the needs and problems of the $\ulcorner$Environment$\lrcorner$ subject in secondary school of the current 6th curriculum in Korea and to indicate the directions of improvement environmental education. The first step of this research was to review the related literature and the result indicated that the number of secondary schools that selected $\ulcorner$environment$\lrcorner$ subject and the teachers who have $\ulcorner$environment$\lrcorner$ certification of a second-major has increased yearly but it shows much difference by regions. The second step was questionnaire surveys on 60 $\ulcorner$Environment$\lrcorner$ teachers in secondary school. According to the survey, 65% of teachers are not certificated and 50% of teachers have no self-confidence of teaching. And most of teachers thought it was difficult to select the modules out of textbook and teachers had difficulties such as the lack of appropriate reference materials and instructive experience of their own instructive experience of active researches. The third step was the questionnaire survey on a students group(606) learning the $\ulcorner$environment$\lrcorner$ subject and a students group(621) without the $\ulcorner$environment$\lrcorner$ subject in secondary school. The group learning $\ulcorner$environment$\lrcorner$ subject showed significantly higher scores than those of the group without $\ulcorner$environment$\lrcorner$ subject in most items. And among the students having $\ulcorner$environment$\lrcorner$ subject, the first year students achieved the highest score, and it revealed that the teaching was most effective to them. The suggestions based on the results of this study are as follows. First, the uncertifiable teachers currently teaching $\ulcorner$environment$\lrcorner$ subject should be given priority to the second-major certificate training program ; which are diverse in contents according to differences of majors and levels. Second, specific and practical re-training programs for the certificated teachers teaching the subject are needed. Third, considerable and continual adjustment of the textbook yearly is required in addition to regular curriculum amendment. Fourth, the more efficient and actual teaching.learning methods of $\ulcorner$environment$\lrcorner$ subject education that can attract students' interest must be developed. Fifth, it is most desirable to have first year students select the subject.

• Korea and Global Affairs
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• v.1 no.1
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• pp.97-114
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• 2017

This article aims for searching the clue of North Korea nuke-problem by understanding it contextually. We must see this from the beginning as many trials in settling the problem have failed. North Korea nuke-problem is related to the change of international implication as well as the domestic process of its development. At first, it started from the regime survival, which evolved with the effect of learning. During the Cold War, its development had combined the principle of 'self-defense' because of Sino-Russia conflict. Particularly, its meaning varied dramatically due to the collapse of Cold War system plus the advent of post-Cold War system. North Korea nuclear program has became a global problem based on the deterioration of North Korea's security milieu and Bush administration's policy. Therefore, the area of common solution for NK nuke-problem must be found in the context of regime survival and the change of its meaning by continual convergence effort.

• The Journal of the Korea Contents Association
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• v.9 no.8
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• pp.57-63
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• 2009

Object recognition technologies using PCA(principal component analysis) recognize objects by deciding representative features of objects in the model image, extracting feature vectors from objects in a image and measuring the distance between them and object representation. Given frequent recognition problems associated with the use of point-to-point distance approach, this study adopted the k-nearest neighbor technique(class-to-class) in which a group of object models of the same class is used as recognition unit for the images in-putted on a continual input image. However, the robustness of recognition strategies using PCA depends on several factors, including illumination. When scene constancy is not secured due to varying illumination conditions, the learning performance the feature detector can be compromised, undermining the recognition quality. This paper proposes a new PCA recognition in which database of objects can be detected under different illuminations between input images and the model images.