• 제목/요약/키워드: grasp points

검색결과 126건 처리시간 0.025초

An instrumented glove for grasp specification in virtual reality based point-and-direct telerobotics

  • Yun, Myung Hwan;Cannon, David;Freivalds, Andris
    • 대한인간공학회지
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    • 제15권2호
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    • pp.165-176
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    • 1996
  • Hand posture and force, which define aspects of the way an object is grasped, are features of robotic manipulation. A means for specifying these grasping "flavors" has been developed that uses an instrumented glove equipped with joint and force sensors. The new grasp specification system is being used at the Pennsylvania State University (Penn State) in a Virtual Reality based Point-and-Direct (VR-PAD) robotics implementation. In the Computer Integrated Manufacturing (CIM) Laboratory at Penn State, hand posture and force data were collected for manipulating bricks and other items that require varying amounts of force at multiple pressure points. The feasibility of measuring desired grasp characteristics was demonstrated for a modified Cyberglove impregnated with FSR (Force Sensitive Resistor) pressure sensors in the fingertips. A joint/force model relating the parameters of finger articulation and pressure to various lifting tasks was validated for the instrumented "wired" glove. Operators using such a modified glove may ultimately be able to configure robot grasping tasks in environments involving hazardous waste remediation, flexible manufactruing, space operations and other flexible robotics applications. In each case, the VR-PAD approach improved the computational and delay problems of real-time multiple- degree-of-freedom force feedback telemanipulation.

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STUDY ON THE VISUAL COGNITIVE CHARACTERISTICS BY THE FIXATION POINT ANALYSIS USING THE EYE MARK RECORDER

  • Yamanoto, Satoshi;Yamaoka, Toshiki;Matsunobe, Takuo
    • 한국감성과학회:학술대회논문집
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    • 한국감성과학회 2001년도 춘계학술대회 논문집
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    • pp.20-25
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    • 2001
  • In recent years, the concern about a user center design in increasing, and it's needed to task a user's visual cognitive characteristics for information presentation. Then this study aims to grasp user's cognitive characteristics about the information presentation by analyzing the fixation points. In the experiment, actually subject operated a copy machine. Recorded the fixation point movement of the operation panel by the eye mark recorder. Analysis examined the screen interface of the operation panel from the field of a fixation point trace. The top down type fixation oder by experience or the context became clear as a result. Furthermore, the difference of the fixation order by skill level was also examined. In this study, it was assumed that to grasp the visual cognitive characteristics becomes the key of efficient information.

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일부 초등학생의 심폐소생술교육의 효과 (The effectiveness of Cardiopulmonary Resuscitation training in elementary students)

  • 김희정;최은숙
    • 한국응급구조학회지
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    • 제11권2호
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    • pp.51-66
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    • 2007
  • Purpose: With a view to providing basic data to develop cardiopulmonary resuscitation education suitable for elementary students, the cardiopulmonary resuscitation education was conducted to grasp students' knowledge, skills accuracy and the attitude change before and after the education. Methods: Convenience sampling was made on fourth and fifth graders(total-35 students) of S elementary school located in K city, Chungcheongnam-do, and this was a pre-experiment research designed before and after choosing a single group. In terms of methods, specifically we, researchers ; 1) Handed out questionnaires to students directly to make them fill in firsthand and collected the questionnaires. 2) Utilized PPT materials based on 2005 AHA guideline and DVD materials of AHA, to give students theoretical education of cardiopulmonary resuscitation. We used Anne/SkillReporter$^{(R)}$ torso produced by Leardal Inc, and Little Anne to conduct practical education individually. 3) Asked students to give Anne/SkillReporter$^{(R)}$ torso cardiopulmonary resuscitation five times with the ratio of 30 : 2, and then one of researchers filled in the evaluation sheet individually. 4) Evaluated the accuracy of students' ability to perform the resuscitation based on the record of Anne/SkillReporter$^{(R)}$ integrated printer(which was the objective tool to grasp students' skills accuracy). 5) Gave out questionnaires to make students fill them in and then collected them. after completing the practical evaluation. Results: 1) In case of the attitude about cardiopulmonary resuscitation, Students' confidency rose from 19.28%(before the education) to 93.57(after the education)- which is a positive change. 2) As the result of the education, some elementary students scored 11 points (full score-16 points), up from 5 points before the education, in terms of the knowledge about cardiopulmonary resuscitation. The average point also reached 13.14 points(after the education), jump from 8.37(before the education), which was the rise of 29.8%. 3) When it comes to the practical performance, the skills accuracy was 80.93% on average, and the calculation method was as follows: total items were 16, and each item was marked form 0 to 2 points, meaning the full score was 32 points. The minimum score was 19 points and the maximum was 32($M{\pm}SD=25.90{\pm}2.88$), which was calculated based on percentage. 4) Regarding skills accuracy, respiration accuracy(%)($M{\pm}SD=30.20{\pm}27.16$) was higher than pressure accuracy(%) ($M{\pm}SD=15.34{\pm}25.27$). Conclusion: The result showed that students' attitude on cardiopulmonary resuscitation changed positively. and meaningful difference(p = .00) existed in the change of students' knowledge. In terms of skills accuracy. chest compression and airway control showed high accuracy, but the result of Anne/SkillReporter$^{(R)}$ performance showed that the accuracy of chest compression was lower than that of mouth-to-mouth resuscitation.

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국방품질경영체제(DQMS) 정량평가모델 개발 및 제도화 방안 연구 (A Study on the Development and Institutionalization Plan of a Quantitative Evaluation Model of Defense Quality Management System)

  • 김영현;하진식
    • 품질경영학회지
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    • 제50권2호
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    • pp.183-197
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    • 2022
  • Purpose: The purpose of this study is to develop a quantitative evaluation model for the defense quality management system and suggest institutionalization plans. To this end, another existing evaluation model was reviewed and analyzed to develop a quantitative evaluation model applicable to military institutions. Methods: In this study, in order to establish a DQMS quantitative evaluation model, a military product quality level survey model and a defense quality model operated in the defense field were analyzed. In addition, evaluation models and indicators were analyzed by investigating evaluation models operated by other institutions and private sectors. Results: As a result of the study, the total score of the DQMS model was 1,000 points, 600 points for maturity level indicators and 400 points for operation performance indicators, and the evaluation items consisted of 7 major categories and 25 middle categories. The maturity level index 600 points are 70 points for organizational situation, 60 points for leadership, 40 points for planning, 100 points for support, 180 points for operation, 90 points for performance evaluation, and 60 points for improvement. Conclusion: It will be easy to quantify and evaluate the operating level of DQMS certified companies through the application of the DQMS quantitative evaluation model and evaluation criteria presented in this study. As a result, it will be possible to grasp the level of quality management system and the areas of improvement, and the overall level of improvement can be expected by inducing voluntary improvement activities through sharing of best practices and identifying improvement cases.

AN INVESTIGATION INTO RADIATION LEVELS ASSOCIATED WITH DISMANTLING THE KOREA RESEARCH REACTOR

  • Choi, Geun-Sik;Kim, Hee-Reyoung;Han, Moon-Hee
    • Nuclear Engineering and Technology
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    • 제42권4호
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    • pp.468-473
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    • 2010
  • We confirmed that the dismantling of two research reactors with thermal power of $2MW_{th}$ and $100kW_{th}$, respectively, reveals no significant difference between the radiation levels of the research reactor site and the surrounding environment far away from it, from the radiation level aspect. Radiation dose and radioactivity were measured at monitoring points around the research reactor site of the Korea Atomic Energy Research Institute (KAERI) in Seoul and comparison points 0.5 km to 3.3 km from the site. To grasp trends in the radiation levels during dismantling from the end of 2002 to the end of 2007, the gamma radiation dose rate, the accumulated dose, and the radioactivity of the strontium, tritium, and gamma isotopes were statistically treated and estimated. The averages of these items between the two groups, the research reactor site and comparison points, were assessed by applying a T-test with a significance level of 0.05. P-values found by using the T-test were from 0.12 to 0.83 where the values were much higher than the significance level. As a result, no difference was observed between the radiation levels at the research reactor site and at the comparison points by this T-test. This study showed that dismantling activity of the Korea Research Reactor of the Seoul site did not expose the public or the environment to harmful levels of radiation.

비젼 기반의 마이크로매니퓰레이션을 위한 조작점 추출 알고리듬 (Grasp Points Extraction Algorithm for Vision Based Micromanipulation)

  • 장민수;이석주;박귀태
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2003년도 하계학술대회 논문집 D
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    • pp.2462-2464
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    • 2003
  • 본 논문에서는 비젼 기반의 마이크로매니퓰레이션을 위해서 임의의 형태의 오브젝트에서 조작점을 추출하는 알고리듬을 제안한다. 본 알고리듬은 무게 중심점과 K-L 변환을 이용하여 오브젝트의 조작점을 선정하고 오브젝트와 마이크로 그리퍼가 접촉하게 되는 면에서 최외곽의 접점을 접촉점으로 선정한다.

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시각센서를 이용한 움직이는 물체의 추적 및 안정된 파지를 위한 알고리즘의 개발 (An Advanced Visual Tracking and Stable Grasping Algorithm for a Moving Object)

  • 차인혁;손영갑;한창수
    • 한국정밀공학회지
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    • 제15권6호
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    • pp.175-182
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    • 1998
  • An advanced visual tracking and stable grasping algorithm for a moving object is proposed. The stable grasping points for a moving 2D polygonal object are obtained through the visual tracking system with the Kalman filter and image prediction technique. The accuracy and efficiency are improved more than any other prediction algorithms for the tracking of an object. In the processing of a visual tracking. the shape predictors construct the parameterized family and grasp planner find the grasping points of unknown object through the geometric properties of the parameterized family. This algorithm conducts a process of ‘stable grasping and real time tracking’.

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가청화를 이용한 고소음 작업장의 흡음대책 평가 (Evaluation on Attenuation for Sound-absorbing Measures of Loud Noisy Work-site using Auralizational Technique)

  • 윤재현;김재수
    • 한국소음진동공학회논문집
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    • 제20권8호
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    • pp.742-752
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    • 2010
  • In case of the working machine that using in the loud-noisy workplace, as it generates the loud-noise, it is influencing a physical, mental bad effect to those workers. Accordingly, though the noise countermeasure for the loud-noisy workplace is acutely requiring, until now, those methods that wearing the soundproof-protection tool, or restriction the working hours, and minimize the noise exposure volume, were mainly used. However, such noise countermeasures occur many problem points. On such point of view, using the acoustic simulation technique, let the workers to choose the workplace where suffering many damages due to the noise of working machine, and after grasp the physical property of working machine and indoor acoustic characteristic, this Study has attempted to grasp the reduction degree of noise level at before-improvement?after-improvement, through the sound-absorption measure. Passing through such preceding step, using auralizational technique based on the noise of working machine of before-improvement after-improvement, and by conduct psycho-acoustics evaluation, this study intended to investigate the change degree of subject reaction. As the result of evaluation, it is considering that the noise-reduction countermeasure method for the loud-noisy workplace could be much effective, through the sound-absorption measure.

국제목록원칙 2009 제정에 따른 한국목록규칙의 방향성에 관한 연구 (The Study on the Directions of KCR4 under the New ICP 2009)

  • 이미화
    • 한국문헌정보학회지
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    • 제46권2호
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    • pp.261-280
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    • 2012
  • 본 연구는 파리원칙을 대체하고, 기계가독형목록환경에서 제정된 국제목록원칙 2009의 분석을 통해 한국목록규칙의 방향을 모색하기 위한 것이다. 국제목록원칙 2009는 국가의 목록규칙 제정시 일관성을 유지하기 위한 최소한의 원칙으로 RDA, ISBD 2010 등의 목록규칙에 이미 반영되고 있다. 반면, 한국목록규칙은 2003년 제정된 이후 개정작업이 이루어지지 않았으며, 서지기술 부분만 있고 접근점의 선정과 형식은 전거에서 처리하도록 규정하고 있어 개정의 필요성이 대두되고 있다. 이에 본 연구는 국제목록원칙 2009를 분석하여 한국목록규칙에서 적용할 사항을 파악하고자 한다. 우선 파리원칙과 국제목록원칙 2009를 비교하여 국제목록원칙 2009의 특징을 살펴본 후, 이를 한국목록규칙과 비교하였다. 한국목록규칙과 비교항목은 국제목록원칙 2009의 범위, 원칙, 개체 속성 관계, 목록의 목적과 기능, 서지기술, 접근점, 탐색능력 기반이었다. 그 결과 한국목록규칙의 방향성은 첫째, 기술부분에서 ISBD 2010과 개념모델을 수용할 수 있어야 한다. 둘째, 국제목록원칙 2009에 근거하여 전거형 접근점의 선정과 형식이 규정되어야 한다. 셋째, 저작/표현형의 식별을 위한 필수 접근점을 서지레코드와 전거레코드에 기술해야 한다. 본 연구를 통해 국제목록원칙 2009의 측면에서 우리나라 목록규칙의 개정의 방향을 마련할 수 있을 것이다.

녹색경영평가지수 개발을 통한 우리나라 녹색경영 현황 및 변화 추이 분석 (The Analysis of Status and Trends on Green Management in Korea by the Development and Application of the Evaluation Index)

  • 이시형;이윤정;이찬우;최광림
    • 한국기후변화학회지
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    • 제5권3호
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    • pp.231-248
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    • 2014
  • The goal of this research is to develop an evaluation method applying 'Green Management Index' introduced by Korean government to assess overall Green management level of the industrial sector. The method can help to grasp the present condition of Green management in Korea and analyze changes in trend. For this research, business types are classified into 8 categories and each evaluation method is developed according to each category. Green management evaluation was conducted in 2013, targeting 513 enterprises and the result was analyzed comparing that of 2011 to understand changes in trend. The evaluation shows that 1) 'strategy and system' section is tentatively vulnerable than other sections, 2) industry with higher sensitivity towards regulations has higher score, 3) there is a significant gap conducting green management between conglomerates and SMEs especially in 'system' section. The total score was elevated by 3 points compared to 2011. It is considered that the elevation of score was attributed to tightened regulations such as Target Management Scheme. Controlled Entities scored 4 points higher and 'GHG and environmental pollution' section increased by 10 points. Also, there is a wide disparity in green management evaluation between controlled entities and non-controlled entities from 5 points in 2011 to 10 points in 2013.