• Title/Summary/Keyword: expert skill

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Deburring Skills to Robot Using Vision System (비젼을 이용한 디버링 기술의 로봇에의 전달)

  • 신상운;최규종;이규상;김영원;안두성
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.10a
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    • pp.1110-1113
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    • 1995
  • This study presents the new method which can transfer the expert's skill to deburring robot through neural network. The expert's skill is expressed as associationmapping between the characteristics of the burr and human expert's action. Under the fundamental idea that the state of the deburring processcan be extracted via the visual sense of the human,we employ vision system for the perception and identification of the changing burr. Form the demonstration of human experts, force data are measured. Finally the characteristics of the burr and coressponding force are associated by the neural network which is trained through many demonstrations. The proposed method is verified in the deburring process of welding burr.

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A Study on the Automation of Deburring Process Using Expert's Skills (숙련가 기술을 이용한 디버링 공정의 자동화에 관한 연구)

  • 신상운;갈축석;안두성
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1996.04a
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    • pp.685-688
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    • 1996
  • In debureing process. Human experts who have long experenc in performing deburring tasks can manipulate tools efficiently and adapt the tool motions according to the state of the process based on their skills. However, human experts have difficulties in describing linguistically their control schemes and strategies because teey don't aware the detailed process in interpreting wensory information and adapting tool motion. Therefore, it is important to develop a mean of understanding the skills and acquiring the control schemes so that the robot can perform the same skillful motion as the human experts. In this paper, an expert's skill model is developed so that it can be transferred effectively from the expertt to the robot. Skills are represented by a mapping which is generated by using a neural network. Expert's skill shows that the robot is able to associate a correct control strategy with process characteristics which is acquired from a vision image in a similar manner to a human expert's

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Transfer Deburring Skills to Robot Using Vision System (비젼을 이용한 디버링 기술을 로봇에 전달)

  • 신상운;안두성
    • Journal of the Korean Society for Precision Engineering
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    • v.15 no.9
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    • pp.93-100
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    • 1998
  • This study presents the new method which can transfer the expert's skill to deburring robot through neural network. The expert's skill is expressed as association mapping between the characteristics of the burr and human expert's action. Under the fundamental idea that the state of the deburring process can be extracted via the visual sense of the human, we employ vision system for the perception and identification of the changing burr. From the demonstration of human experts, force data are measured. Finally the characteristics of the burr and corresponding force are associated by the neural network which is trained through many demonstrations. The proposed method is verified in the deburring process of welding burr.

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A Kinematical Analysis of Forward Handspring Motion (핸드스프링 동작의 운동학적 분석)

  • Bae, Nam-Eun
    • Korean Journal of Applied Biomechanics
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    • v.13 no.2
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    • pp.89-100
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    • 2003
  • In this research was to analyze 3-D kinematics variables for handspring of basic motion in the heavy gymnastics in order to investigate kinematical difference between expert and novice. Therefore, the purpose of this research was provide quantitative information, systematic provision, rules, establishment of basic skill for improving skill and teaching athletes. And in the research, results were as followings. 1. In the time variables, total time was that expert took 0.745sec and novice took 0.829sec, and as duration time of each event, expert was faster than novice in the all motion event except till second event of the preparation motion. 2. In the center of body variables, vertical direction variables, the displacement of body center hight was that expert showed 61.26% and novice showed 54.48% in the third event of all motion, also all event were showed expert was higher displacement than novice except first of event in preparatory stage. 3. In the angle displacement of main joint, the right direction was that expert showed 154.12degree and novice showed 174.85degree and the left direction was that expert showed 159.29degree and novice showed 171.46degree In the second event of main joint curved point at the same time hand was reached floor. In the angle displacement of knee joint in the third event of all motion, expert showed 155.25degree and novice showed 154.00degree In right, and expert showed 155.24degree and novice showed 154.55degree in left. In this result, both were same motion type. In the angle displacement of hip joint in the third event of the all motion, expert showed 142.80degree and novice showed 134.17degree in right, and expert showed 140.28degree and novice showed 144.94degree in left. In this result, motion pattern of expert was same both sides, but novice was different. According to the results, to increase efficiency of motion and aesthetic effect in the all motion, it should stretch displacement and height of body center and make similarly angle of right and left joint.

Aging Influence on Labor Productivity (고령화가 노동 생산성에 미치는 영향)

  • Lee Keun-Boo;Oh Se-Ho;Yang Hee-Joong
    • Journal of the Korea Safety Management & Science
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    • v.8 no.2
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    • pp.81-90
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    • 2006
  • As aging society makes rapid progress, various social problems arise. The drop of productive labor and the increase of welfare cost can be taken as examples. From this point of view, a use of aged labor is a matter of great Important to national productivity improvement. But, the participation rate of the aged in economical activity amounts to 49.8 percent and their unemployment rate does 2.1 percent. The purpose of this paper is to analyze the deterioration of skill and the lowering of adaption to new working environments due to aging. Since the aging effect is closely related to worker's productivity, it should be properly measured and analyzed. The coordination tester is used to find out activity limitations. Experimental results show that the expert skill of the workers can be improved through the effective of their experience. Therefore we can say that some operation is not influenced by aging.

An Evaluation on the work of Elderly Males and Females (노령자의 작업수행능력 평가)

  • 이근부;오세호
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.27 no.1
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    • pp.51-56
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    • 2004
  • The performance decreases as the workers get older and the degree of decrease in the performance shows a marked difference depending on each individuals. On the other hand, the older workers tend to have better ability to adapt to the new working environments and expert skills. Our purpose in this paper is to focus on the analysis about this conflicting situation, thereby important informations are applied in designing working conditions of older workers. Experimental results show that the expert skill of the aged workers can be improved through the effective use of their experiences, therefore some operation can not be influenced by age.

Development of Intellingent Deburring System Based on Industial Robot (산업용로봇을 이용하는 지능 버 제거 시스템 개발에 관한 연구)

  • Shin, Sang-Un;Choe, Gyu-Jong;Ahn, Du-Seong
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.34 no.1
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    • pp.1-5
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    • 1998
  • This study presents intelligent deburring system which can transfer the exper's skill to deburring robot through neural network. The expert's skill is expressed as associate mapping between the characteristics of the burr and human expert's action. Under the fundamental idea that the state of the deburring process can be extracted via the visual sense of the human, we employ vision system for the perception and identification of the changing burr. From the demonstration of human experts, force data are measured and fitted impedance model. Finally the characteristics of the burr and coressponding force are associated by the neural network which is trained through many demonstrations. The proposed method is verified in the deburring process of welding burr.

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A Study on the Development of Skill Framework for Agriculture, Forestry and Fisheries Sector (농림 및 수산분야 직무체계 개발 연구)

  • Park, Jong-Sung;Ju, In-Jung;Kim, Sang-Jin
    • Journal of Agricultural Extension & Community Development
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    • v.17 no.3
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    • pp.607-637
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    • 2010
  • The goal of this study is to develop a skill system for the areas of agriculture, forestry and fisheries among the skill frameworks that require basic examination in the development of skill standards. More specifically, the study aims to classify skills in the areas of agriculture, forestry and fisheries and to develop respective skill level. We classified skills and created the skill level through a study of documents, interview with experts and in-depth discussions with expert group centering on terminologies commonly used in the industrial settings. As a result of skill classification, we were able to classify skills into four categories in medium-scale classification, 13 categories in small-scale classification, and again into total 42 categories. We classified the skill level in the areas of agriculture, forestry and fisheries into 8 stages. Based on the skill system, we provided definition of skill and skill group, definition of each different skill, and performance standard by skill and level.

Comparative Analysis of IT Skill Standards (IT 스킬 표준에 관한 비교분석)

  • Lim, Gyoo-Gun;Lee, Dae-Chul;Park, In-Sub
    • Journal of Information Technology Services
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    • v.6 no.2
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    • pp.81-97
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    • 2007
  • Nowadays, IT becomes one of the core competencies in a business. So defining appropriate responsibilities & roles of IT human resources as well as setting the professionalism of them is getting more important. However, there are lots of problems between the supply and the demand of IT human resource. The efforts to arrange workers who have expert knowledge and skill in right place are needed to strengthen national competitiveness. Recently, several leading countries are setting IT skill standards to solve such problems. Therefore, this paper aims at analyzing IT skill standards of developed countries such as ITSS of Japan, SFIA of United Kingdom, and SSIT of USA. By doing comparative analysis of current status of Korea with them, we derive some meaningful insights to develop a national IT skill standard.

How to Improve Expert Witness in Medical Malpractice Litigation (의료과오소송에서의 감정상 제문제)

  • Yang, Hui-Jin
    • The Korean Society of Law and Medicine
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    • v.9 no.2
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    • pp.311-338
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    • 2008
  • This paper aims to introduce an overview of the regime of expert witness in the medical malpractice litigation, and to provide a plan of how to make it improved. In regard with medical expert witness, several problems, such as time-consuming procedure, non-neural and unclear opinion without reasons provided, have been pointed out for several years. Lack of skill of the court and plaintiff/defender to question the expert is one of many cause to lead to the above problems. What is questioned to the expert? Because expert witness is used in determining probability of negligence, questions to the expert should be selected on the grounds of whether or not to obtain opinions or facts sufficient to let the judge infer negligence in view of the theory of proof burden established by the Supreme Court. In addition, to avoid non-neutral and unclear opinion, it is necessary to question the expert clearly, specifically and scientifically.

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