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임영,윤임중,Lim, Young,Yun, Im-Goung 대한예방의학회 1990 예방의학회지 Vol.23 No.3
In order to assess the method which is more sensitive one to detect the early change of lung tissue by the inhaled dust, we have performed the various medical examinations such as chest radiography, pulmonary function test, high resolution chest CT, brnchoalveolar lavage and lung biopsy used bronchoscope and ultrathin bronchoscopy examination to 48 persons. The control group were 8 persons who did not exposed to dust, 40 cases of the experimental group have professionally exposed to the mineral dust. The results were as follows 1. The total number of cells in bronchoalveolar lavage was significantly increased in all of the pneumoconiosis group classified by chest and high resolution chest CT. 2. The composition rate of macrophage to the total number of cells in bronchoalveolar lavage fluid was significantly decreased in all of the pneumoconiosis group compared with the control group. 3. The composition rate of neutophils and lymphocytes to the total number of cells in bronchoalveolar lavage fluid was significantly increased in all of the pneumoconiosis group compared with the control group. 4. The forced expiratory volume in one second ($FEV_{1-0}$), maximal mid-expiratory flow (MMF), and maximal voluntary ventilation (MVV) were significantly increased only in the group of the progressed pneumoconiosis relatively. 5. We observed submucosal edema, anthracotic pigmentation and granuloma formation in transbronchial lung biopsy of the suspected pneumoconiosis (category 0/1) case which is thought to the early change of coal workers' pneumoconiosis.
장동훈(Jang, Dong Hoon),임영인(Im, Young In) 한국부동산학회 2011 不動産學報 Vol.44 No.-
1. CONTENTS (1) RESEARCH OBJECTIVES This paper mainly focuses on the proper standard of compensation for the store building owned entrepreneurs and tenants of small-scale commercial quarters by urban redevelopment project in Dandae-dong, Seongnam-si. (2) RESEARCH METHOD This paper utilizes actual status analysis on the detailed statement of requirements for business compensation in Dandae-dong, Seongnam-si. In addition, using interviewing research to building owners and tenants. (3) RESEARCH FINDINGS The problems of current business compensation rewards system represented lack of evaluation expertise, rigorous standards of close business, lack of diversity of compensation in business suspension, lack of premium and migration policy. 2. RESULTS The improving methods to business compensation system needed professionalism of business loss compensation assessment and detailed statement to secure notices, relax regulations on standards of close business, the realization of suspension of business compensation, including the premium to operating profit, migration policy for commercial building owners, retail lease for small tenants.
3차원 프린팅으로 제작된 개인맞춤형 안경테의 유한요소해석
이지은(Ji-Eun Lee),임영은(Young-Eun Im),박근(Keun Park) 대한기계학회 2016 大韓機械學會論文集A Vol.40 No.1
최근 개방형 소스 기반의 저가 3 차원 프린터의 출현에 의해 3 차원 프린팅에 대한 관심이 고조되고 있다. 3 차원 프린팅은 기존 제조업의 진입장벽을 낮추고 유연성을 높일 것으로 기대되며, 저비용으로 개인맞춤형 제품의 제작이 가능한 장점이 있다. 본 연구에서는 뱀 모양을 형상화한 비대칭 형상의 독특한 안경테를 설계하였고, 사용자의 안면 특성을 반영하여 개인맞춤형으로 설계하였다. 또한 3 차원 프린팅으로 제작된 안경테의 구조적 안전성을 평가하기 위해 유한요소해석을 수행하였으며, 이때 적층방향별 인장시험을 통해 확보한 직교이방성 물성을 반영하였다. 해석을 통해 가장 안전성이 높게 평가된 적층 방향으로 프린팅을 수행하였고, 제작된 안경테는 조립과정에서 파손 없이 조립됨을 확인하였다. In recent years, 3D printing has received increasing attention due to releases of low-cost 3D printers based on open-source platform. 3D printing is expected to reduce the barrier to entry in the traditional manufacturing processes by increasing flexibility and creating an advantage to manufacture customized products at low costs. In this study, a unique eyeglass frame was designed to have a snake shape, which has an asymmetric geometry unlike traditional frames. The eyeglass frame was designed in a customized manner by reflecting dimensional characteristics of a customer’s face. Finite element analysis was performed to investigate the structural safety of the 3D printed frames during the assembly process. The analysis also considered the effect of anisotropic material properties as determined by tensile tests. The eyeglass frame was then printed using the customized sizes and the best building process. The eyeglass frame was successfully assembled with lenses and without structural failure during its assembly procedure.
High Power In-Line Optical Isolator for CW Fiber Laser
한수욱(Swook Hann),임영은(Young-Eun Im),김동환(Dong Hwan Kim) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4
We propose and demonstrate the novel in-line fibre isolator for the high power laser. The in-line isolator consists of the cascade FBGs. Each FBG has a reflectivity of 99.9 % with 3㏈ bandwidth of 1nm. The fibre laser has the cavity with high reflection (HR) FBG and low reflection (LR) FBG as a reflector. The active fibre medium is between the HR FBG and LR FBG. By help of pump LD set, the active medium can generate the longer wavelength ASE output and make a laser using the reflector.
하이브리드 리세트 제어 및 신경망 기법을 이용한 네트워크 기반 비선형 시스템의 제어
조현철(Hyun Cheol Cho),신동기(Dong Gi Shin),이권순(Kwon Soon Lee),임영도(Young Do Im) 한국정보기술학회 2009 Proceedings of KIIT Conference Vol.2009 No.-
본 논문은 리세트 제어시스템과 신경회로망 기법을 이용한 네트워크 기반 비선형 시스템의 새로운 제어알고리즘을 제안한다. 우선 피드백 선형화를 이용하여 공칭제어시스템을 구성하며 보조제어시스템으로 리세트 제어규칙을 산출한다. 리세트 제어시스템은 또한 실시간 제어오차를 감소하기 위하여 신경회로망을 구성하여 제어시스템을 구성하였다. 통신 네트워크로 인해 발생하는 시간지연은 유한한 값을 갖는 비정치 변수로 정의하였으며 원거리의 제어대상인 플랜트는 비선형 모델로 간주하였다. 제안한 제어기법의 타당성을 검증하기 위하여 컴퓨터 시뮬레이션을 실시하였으며, 기존의 상태궤환 제어기법과 비교 검토하여 성능의 우수성을 입증하였다. This paper presents a new control approach for network based nonlinear systems using a reset control and a neural approach. First, we derive a nominal control law with the feedback linearization and then devise auxiliary control strategy by means of neural based reset control. We define networked-induced time delay as a bounded nonstationary random variable and deal with a remote nonlinear plant. We achieve computer simulation for evaluating the proposed control method and carry out comparative study to prove its superiority with respect to control performance.
DC 용접기의 전극접촉직경과 최대순시발열율에 관한 실험곡선 실현
이상민(Sang-Min Lee),방상우(Sang-Woo Bang),임영도(Young-Do Im) 한국정보기술학회 2010 Proceedings of KIIT Conference Vol.2010 No.-
본 논문은 DC 저항 스폿 용접기에서 용접기의 성능을 평가할 수 있는 실험곡선을 위한 연구이다. 용접에 있어 우수한 용접 품질과 용접기의 성능을 높이기 위해 전극접촉직경과 최대순시발열율의 파라미터를 제시한다. 용접출력전류를 파리미터로 하여 용접횟수에 대한 전극접촉직경의 실험곡선과 용접타점의 순서를 파리미터로 하여 용접 출력전류에 대한 최대순시발열율의 실험곡선을 실험을 통하여 제시한다. This paper is study for assesment of welding from DC Resistance Spot Welder. For welding, to propose parameter of the contact diameter of electrodes and the Instantaneous Heating Rate(IHR) because improve welding quality and performance. In this study, the weld output current is used as a parameter to propose the experimental curve of (he electrode contact diameter on the number of welding points. In addition, the order of welding points is used as a parameter to propose the experimental curve of the maximum instantaneous heating rate on the welding output current for multiple welding points.
이상민(Sang-Min Lee),강희정(Hee-Jung Kang),임영도(Young-Do Im) 한국정보기술학회 2010 Proceedings of KIIT Conference Vol.2010 No.-
최근 친환경 에너지를 생산하는 풍력 발전과 전기자동차 개발 등 많은 분야에서 전기에너지의 활용이 증가하고 있는 실정이다. 본 논문은 이러한 전기에너지를 효율적으로 제어하기 위한 전력시스템으로서 ZVS 기능을 갖는 범용 인버터 방식을 제안한다. 전력 반도체 소자 IGBT를 사용하여 범용 풀브리지 인버터를 설계하여 전력시스템의 스위칭 손실을 최소화하고, 부하변동에 따른 전류를 일정하게 제어하기 위해 Zero Voltage Switching-PID(ZVS- PID) 제어기를 실현하다. Recently Using of electrical energy is increased in many fields to produce Green energy such as wind power and electric car development. This paper is Power System for efficiently electric energy control and suggest Inverter method with ZVS Function. It realizes Zero Voltage Switching-PID(ZVS-PID) Controller, because of universal full-bridge inverter design using IGBT for minimize switching loss of Power System and current control by Load variation.