• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.2
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• pp.398-405
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• 2006

We propose a pattern classification model using a selective perception ability of human beings. Generally, human beings recognize an object by putting a selective concentration on it in the region of interest. Much better classification and recognition could be possible by adapting this phenomenon in pattern classification. First, the pattern classification model creates some reference cluster patterns in a usual way. Then it generates an SPM(Selective Perception Map) that reflects the mutual relation of the reference cluster patterns. In the recognition phase, the model applies the SPM as a weight for calculating the distance between an input pattern and the reference patterns. Our experiments show that the proposed classifier with the SPM acquired the better results than other approaches in pattern classification.

• Journal of the Korean Institute of Intelligent Systems
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• v.14 no.4
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• pp.493-498
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• 2004

A novel approach for path planning of a polygonal robot is presented. Traditional path planners perform extensive geometric searching to find the optimal path or to prove that there is no solution. The computation required to prove that there is no solution is equivalent to exhaustive search of the motion space, which is typically very expensive. Humans seems to use a set of several different path planning strategies to analyse the situation of the obstacles in the environment, and quickly recognize whether the path-planning problem is easy to solve, hard to solve or has no solution. This human path-planning strategies have motivated the development of the presented algorithm that combines qualitative shape reasoning and exhaustive geometric searching to speed up the path planning process. It has three planning stages consisting of identification of no-solution cases based on an enclosure test, a qualitative reasoning stage, and finally a complete search algorithm in case the previous two stages cannot determine of the existence of a solution path.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.1
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• pp.285-288
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• 2005

Neural networks are known as kinds of intelligent strategies since they have learning capability. There are various their applications from intelligent control fields; however, their applications have limits from the point that the stability of the intelligent control systems is not usually guaranteed. In this paper we propose a neuro-adaptive controller for robot manipulators using the radial basis function network(RBFN) that is a kind of a neural network. Adaptation laws for parameters of the RBFN are developed based on the Lyapunov stability theory to guarantee the stability of the overall control scheme. Filtered tracking errors between the actual outputs and desired outputs are discussed in the sense of the uniformly ultimately boundedness(UUB). Additionally, it is also shown that the parameters of the RBFN are bounded. Experimental results for a SCARA-type robot manipulator show that the proposed neuro-adaptive controller is adaptable to the environment changes and is more robust than the conventional PID controller and the neuro-controller based on the multilayer perceptron.

• Journal of the Korea Society of Computer and Information
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• v.24 no.10
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• pp.175-182
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• 2019

The study was conducted to verify the effect of basic life support training on the skill ability of police officers. The subjects of this study were 10 experimental group and 10 comparative group with voluntary consent after explaining the theory and significance of the training experiment at the police station located in K. The education program used in this study consists of theoretical education and practical training, and the theoretical education is 60 minutes and the practical training is 30 minutes. The measurement tool for basic resuscitation performance was measured based on the 'CPR and ECG Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care' presented by the American Heart Association. The results are as follows. The experimental group showed higher performance skills than the traditional control group in field confirmation performance skills, primary evaluation performance skills (A, B, C, medical evaluation), and BLS performance skills (heart compression, artificial respiration, medical evaluation) which are the basic resuscitation performance skills. In conclusion, this study confirmed that the theory and practice education program is more effective in improving the clinical performance of police officers than the traditional lectures and practice education, so it is possible to apply this simulation education program to the cardiac arrest patient emergency treatment.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.1
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• pp.195-199
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• 2011

There are many causes for the variation of the result in oral proficiency test such as the examiner, the task, the theme of the interview, and the gender of the participants. Previous literature documents that the rater is an important variable influencing test scores of second language oral proficiency. Although much research in language testing has been conducted concerning rater effect on test scores, there has been little attention paid to the effect of potential rater variables in language testing on their rating process. There are noticeably different contents of the rating scales across different speaking tests developed in different context. Therefore, it would not be appropriate to apply the same rating criteria for various tasks. In conclusion, we need more subject protocol analyses and more thoughtful studies on rating processes. In other words, the oral proficiency test needs a more realistic and valid tool for the assessment of second language proficiency.

• The Journal of the Korea Contents Association
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• v.14 no.6
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• pp.453-465
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• 2014

Although fairly descent amount of research outcomes has been generated on problem-based learning(PBL) with regard to science and medical subjects, relatively less outcome has been generated on social science and management subjects. Therefore this study attempts to exam effect of problem-based learning in food service entrepreneurship subject on improving problem solving skills. After literature review, for constructing for this research frame, each class schedules were formed by hybrid-PEL and traditional lecture style respectively then problems, solution, and evaluation process were generated for hybrid-PBL. Through the result, there was hardly any differences occurred before and after traditional lecture approach on students' problem solving skills. There was, however, certain differences appeared on students' skills after hybrid-PBL approach. Through the study, hybrid-PBL learning can be an effective teaching method in social science and management subject for improving students' problem solving skill.

• Journal of Korean Philosophical Society
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• v.143
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• pp.87-118
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• 2017

In this paper, I will show several theoretical nonconformities which can be found in P. Singer's concept of human beings. As we know, P. Singer is a well-known animal liberalist. On the one hand, Singer regards man as a subordinate being to nature and on the other, as a transcendent being. This is the first inconsistency of Singer's concept of man. His second inconsistency is related to his position on the power of reason. He believes that it is the product of evolution, and at the same time that it is a power to resist the blindness of evolution. Thirdly, he also exposes the contradictory attitude in evaluation on man's moral ability. Considering these three contradictions, it becomes clear that Singer has failed to prove his claim that there is no qualitative difference between human beings and animals. Despite the popularity of his theory, I believe the theoretical foundation of Singer's animal liberation theory is rather weak. The reason for revealing the weakness of Singer's theory is not to return to the practice of mercilessly handling animals but to show that it is wrong to undermine human dignity under the guise of animal welfare.

• Journal of the korean veterinary medical association
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• v.17 no.4
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• pp.34-37
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• 1981

FSC는 상시지방적을 보유하는 특성을 가지고 있으므로 지방섭취세포(fat-storing cell, FSC)라고 명명되어으며 유동에 노출하는 성세포, 내피세포와 달리 이 세포의 유동면은 교원직유와 내피세포에서 유래하는 윤랑선에 의하여 피복된다. 더욱이 이 세포는 각종 척추동물에 존재한다는 사실이 확인 되었으며 그 지방적은 동물의 종류에 따라 특유한 형을 구비하는 동시에 개체차가 없다. FSC는 이물탐식성이 없으며 지방적을 함유한 성세포와는 위치적, 기능적으로 다르다는 것이 증명되었다. 발생학적으로는 간엽세포에 속하며 유사분제에 의하여 증식능력을 가지고 있다. 이 세포에는 glycogen이 증명되며 모든 지방세포의 실험이 나타나는 성적에서와 유사하게 항시 지방을 합성하여 종의 특유한 형을 가진 지방적으로서 저장됨을 시사하였다. 전현적관륜에 의하여 FSC가 유동주위강(disse腔) 속에 있어 성세포, 내피세포와는 달리 유동에 노출하지 않고 항상 내피세포층과 교원직유에 의하여 유동에서 격리됨을 추정하였다. 이로 인하여 많은 학자들에 의하여 FSC가 승인을 받았다. 오늘날에는 유동을 둘러싸고 있는 상재세포가 내피세포, 성세포 및 FSC의 3종임이 인증이 되었다. 이 세포의 미세구조상의 특징은 기저막이 없는 공허한 세포로 보이나 항상지방적(空胞)을 보유하고 잘 발달한 조면소포체를 가지며 유동내피면에 따라 분기확산하는 돌기를 가지고 있다. 그리고 세포체는 유동주위강을 달리는 무수신경직유의 varicosity (사립체 및 신경결합소포를 함유한 신경종말)와의 사이에 adrenalin 작동성 synaps를 형성한다. FSC의 기능적 의의는 ㄱ, 간소엽내 교원직유형성에 참여 ㄴ. 유동내피하 돌기는 내피를 외측에서 지지하고 보강하며 또한 유동을 둘러싸고 연장하는 돌기는 수축하여 유동강을 축소한다. ㄷ. 지방을 저장하여 간세포의 energe원을 공급하며 VitaminA를 그 속에 저장한다. ㄹ. 간의 해독작용에 관여한다.

• Journal of the Korean School Mathematics Society
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• v.16 no.4
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• pp.927-941
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• 2013

In this paper, we investigate and analysis high school students' generalization of cosine rule using analogy, and we study teaching and learning methods improving students' analogical thinking ability to improve mathematical thinking process. When students can reproduce what they have learned through inductive reasoning process or analogical thinking process and when they can justify their own mathematical knowledge through logical inference or deductive reasoning process, they can truly internalize what they learn and have an ability to use it in various situations.

• Communications of Mathematical Education
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• v.22 no.1
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• pp.53-63
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• 2008

In this paper we study a new proof method of equalities and inequalities using moment of inertia. We analyze proof method using moment of inertia, and describe how to prove equalities and inequalities using moment of inertia.