http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
허성용 한밭대학교 적정기술연구소 2014 적정기술 Vol.6 No.1
The purpose of this article is to address ‘Relationship-based Approach’ and ‘Appropriate Process’ which are arguably two important concepts to be considered in the current discourse of international development, under the subject of ‘appropriate technology’in particular. Relationship-based Approach focuses on how donors and people in the local community in the developing countries establish a relationship, especially at an early stage of a project.
사회적 기업이 국제개발협력 현장에서 만드는 지속가능한 변화: 케냐 Africa Young Entrepreneurs Support (Y.E.S) Project 사례를 중심으로
허성용 한밭대학교 적정기술연구소 2020 적정기술 Vol.12 No.1
사회적 경제, 사회적 기업에 대한 관심과 논의가 전 세계적으로 뜨겁다. 전통적으로 사'회적 가치를 달성하기 위해 후원금을 기반으로 하여 자선, 개발 사업 등을 하는 비영리/비정부 단체와 제품과 서비스를 통해 비즈니스를 하고 수익을 창출하는 것을 목표로 삼는 기업은 서로 명확히 다른 기능과 역할을 가지고 있다. 그런데 사회적 기업은 이 두 영역의 중간에 위치하여 사회적 가치를 추구하는 동시에 이윤을 창출하는 역할을 한다. 두 가지를 균형있게 동시에 달성하는 것이 쉽지 않지만 그것을 이루어낸 성공적인 사회적 기업은 지속가능성과 임팩트를 동시에 만들 수 있다. 역시 지속가능성과 임팩트가 무척 중요한 국제개발협력 분야에서 사회적 경제 모델은 어떻게 적용될 수 있을까? 그리고 사회적 경제가 발전할 수 있는 생태계가 잘 조성되어 있는 고소득 국가에서부터 먼저 시작 된 사회적 기업 성공 사례가 저소득 국가 현장에서는 어떻게 적용되어야 할까? 본 글에서는 필자의 단체에서 운영하고 있는 아프리카(케냐) 청년 사회적 기업가 육성 및 지원 사업 Africa Young Entrepreneurs Support (Y.E.S) Project(이하 예스 프로젝트) 사례를 중심으로 사회적 기업이 국제개발협력 현장에서 만들어 가는 지속가능한 변화에 대해 살펴본다.
모델예측제어를 이용한 이족 보행 로봇의 Stand-Up 모션 제어
허성용(Seong-Yong Hur),김다윗(David Kim),경윤진(Yun-Jin Kyung),최동일(Dong-Il Choi) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
This paper proposes a method to model a robot as a inverted pendulum system of a time-variant system and apply model predictive control to control the standing motion of a bipedal robot stably. The robot used a 12-DoF bipedal robot and modeled the behavior of standing up on two feet on a flat surface as a point mass with a link structure without mass. Model predictive control was applied to stably control the modeled inverted pendulum. As a result of simulating the model predictive control with the do-mpc library, the inverted pendulum was stably controlled, and based on this, the robots joint angle was calculated by solving the robots inverse kinematics. As a result of Gazebo simulation using the calculated joint angle, it was confirmed that the robot was stably controlled and was almost consistent with the do-mpc simulation result, and the performance of the algorithm was verified.
PET/CT 업무환경 내 방사성의약품 취급 시 Apron의 실효성 평가
허성용(Seongyong Heo),김윤환(Yunhwan Kim),김재현(Jaehyeon Kim),김희수(Heesoo Kim),류지영(Jiyeong Ryu),성민제(Minje Seong),장현지(Hyunji Jang),고성진(Seongjin Ko) 한국방사선학회 2015 한국방사선학회 학술대회 논문집 Vol.2015 No.추계
본 연구는 선량 측정 장비를 통한 실측과 몬테카를로 기법을 기반으로 한 모의실험을 통해 핵의학 분야의 PET/CT 업무환경 내 선원 취급 시 Apron의 실효성을 평가하고자 한다. 현재 의료기관에서 사용되는 공간선량계와 보조선량계를 이용한 실측을 통해 선원과의 거리별 Apron의 납 당량 (Non apron, 0.25, 0.5, 0.75, 1.2, 1.25 mm)에 따른 공간 선량률을 측정하였고, MCNPX 모의실험을 통해 동일한 기하학적 조건 내에서 선원과 인체 팬텀과의 거리별 Apron 납 두께 (Non apron, 0.25, 0.5, 0.75, 1.0, 1.25 mm)에 따라 팬텀 내 피부 및 생식선에 흡수된 선량 분포를 측정하여 상호간의 결과를 비교 분석하였다. 측정 장비를 통한 실측 결과, 납 당량이 증가할수록, 선원과 접촉하는 거리가 멀어질수록 공간 선량률이 지수함수 분포로 감소되는 경향을 나타냈다. 도한 모의실험 내 피부 및 생식선 선량 평가 결과, 생식선의 경우 피부보다 더 높은 선량을 나타냈으며, 거리별 납 두께에 따른 선량감소율은 실측에 비해 다소 낮은 결과를 나타냈다. Apron의 증가된 납 당량 사용과 동시에 적정 거리를 유지하여 업무를 수행한다면 종사자의 피폭 저감화에 도움을 줄 수 있을 것이라 판단되나, Apron 납 당량을 무한정으로 증가시키기에는 한계가 있다. 추후 연구를 통해 PET/CT 작업환경 내 핵의학 종사자의 피폭 저감화에 적절한 납 당량의 증가와 동시에 Apron 경량화에 대한 연구가 필요할 것으로 사료된다. This study is aimed at evaluating the effectiveness of an apron in handling the radiation source within the PET/CT work environment in the field of nuclear medicine through the actual measurement using does measuring equipment and a simulation based on Monte Carlo method. Space radiation dose rates according to the lead equivalent of an apron were actually measured with respect to the distance from the radiation source using a space radiation dosimeter and a supplementary dosimeter currently used in medical institutions, and through a MCNPX simulation, the dose distribution absorbed in the skin and genital glands of a human body phantom was measured by the distance between the radiation source and the phantom according to the thickness of lead in an apron. Subsequently, both sets of measurements were comparatively analyzed. In the actual measurement using the equipment, as the lead equivalent and the distance from the radiation source were both increasing, the space radiation dose was shown to decrease exponentially. Also, the evaluation of the dose in skin and genital glands in the simulation showed that the dose in the genital glands was higher than that in the skin, and the decreasing rate of the dose according to the thickness of lead by the distance was slightly lower than that in the actual measurement. If a higher equivalent of lead is used in an apron and at the same time an adequate distance is maintained while the radiation work is underway, it is considered that the exposure of radiation worker will be reduced. However, the lead equivalent cannot be increased without limit. Thus, it is considered that further study on the increase of the lead equivalent adequate for reducing the exposure of radiation workers in the PET/CT work environment as well as the weight lightening of the apron is necessary.
모델예측제어를 이용한 이족 보행 로봇의 Stand-Up 모션 제어
허성용(Seong-Yong Hur),김다윗(David Kim),경윤진(Yun-Jin Kyung),최동일(Dong-Il Choi) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
This paper proposes a method to model a robot as a inverted pendulum system of a time-variant system and apply model predictive control to control the standing motion of a bipedal robot stably. The robot used a 12-DoF bipedal robot and modeled the behavior of standing up on two feet on a flat surface as a point mass with a link structure without mass. Model predictive control was applied to stably control the modeled inverted pendulum. As a result of simulating the model predictive control with the do-mpc library, the inverted pendulum was stably controlled, and based on this, the robots joint angle was calculated by solving the robots inverse kinematics. As a result of Gazebo simulation using the calculated joint angle, it was confirmed that the robot was stably controlled and was almost consistent with the do-mpc simulation result, and the performance of the algorithm was verified.
컴퓨터 작업 후 유지-이완운동과 능동신장이 근피로 회복에 미치는 영향
이현옥,허성용,Lee, Hyun-Ok,Heo, Seong-Yong 대한고유수용성신경근촉진법학회 2008 PNF and Movement Vol.6 No.2
Purpose : The purpose of this study was to identify that the effect of hold-relax and active stretching on recoveries of upper trapezius and sternocleidomastoid muscle fatigue after computer work. Methods : This study was conducted by 30 volunteer at the age of 23~33(resting group=10, hold-relax group=10, active stretching group=10). The muscle fatigue measured by tracing the median frequency(MDF) decrement from power spectrum analyses of EMG signals and the data were analyzed repeated ANOVA. Result : In case of upper trapezius, there was significant difference in group I,II and group II, III. In case of sternocleidomastoid, there was significant difference in group I,II and group I,III. Conclusion : The active stretching was effective for sternocleidomastoid and the hold-relax was effective for upper trapezius and sternocleidomastoid. The hold-relax was effective better than active stretching on recoveries of muscle fatigue.
김기영,박찬수,허성용,함중걸 한국신뢰성학회 2014 한국신뢰성학회 학술대회논문집 Vol.2014 No.5
An automated external defibrillator is a one of typical electronic medical devices that are used widely in therapeutic areas. This study is to propose lists of reliability test derived from environmental condition analysis, failure mode and effect analysis and matrix analysis. Environmental stress tests are determined based on the information obtained using the reliability analysis methods. Detailed Conditions for environmental stress tests are selected from the comparison of various test standards in terms of test conditions.