한의진단명과 진단요건의 표준화 연구 III : 3차년도 연구결과 보고

최선미,양기상,최승훈,박경모,박종현,심범상,김성우,노석선,이인선,정진홍,이진용,김달래,임형호,김윤범,박성식,송태원,김종우,이승기,최윤정,신순식 한국한의학연구원 1997 한국한의학연구원논문집 Vol.3 No.1

The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the third year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows : - analyzing and differentiating of epidemic febrile disease - analyzing and differentiating in accordance with the Sasang constitution medicine based on four-type recognition - differentiation of disease according to pathological changes of Chong and Ren channels - standards for diagnosis of women's disease - standards for diagnosis of children's disease - standards for diagnosis of motor and sensor disturbance (-muscle. born, joint, etc.) - standards for diagnosis of neuropsychiatric disease - standards for diagnosis of five sense organ disease - standards for diagnosis of external disease The indivisual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name, notion of diagnosis pattern, index of differentiation of symptoms and signs, the main point of diagnosis, analysis of diagnosis pattern, discrimination of diagnosis pattern, prognosis, a way of curing a disease, prescription, herbs in common use, disease appearing the diagnosis pattern, documents. The standards for diagnosis of each disease was arranged by the diagnostic requirements in the following order : another name, notion of disease, the main point of diagnosis, analyzing and differentiating of disease, analysis of disease, discrimination of disease, prognosis, a way of curing and prescription of disease, disease in western medicine appearing the disease in oriental medicine, documents.

Evolving physically simulated flying creatures for efficient cruising.

Shim, Yoon-Sik,Kim, Chang-Hun MIT Press 2006 Artificial life Vol.12 No.4

<P>The body-brain coevolution of aerial life forms has not been developed as far as aquatic or terrestrial locomotion in the field of artificial life. We are studying physically simulated 3D flying creatures by evolving both wing shapes and their controllers. A creature's wing is modeled as a number of articulated cylinders, connected by triangular films (patagia). The wing structure and its motor controllers for cruising flight are generated by an evolutionary algorithm within a simulated aerodynamic environment. The most energy-efficient cruising speed and the lift and drag coefficients of each flier are calculated from its morphological characteristics and used in the fitness evaluation. To observe a wide range of creature size, the evolution is run separately for creatures categorized into three species by body weight. The resulting creatures vary in size from pigeons to pterosaurs, with various wing configurations. We discuss the characteristics of shape and motion of the evolved creatures, including flight stability and Strouhal number.</P>

전기 자동차용 경량화 서스펜션 모듈 개발

신헌섭(Yoon-Sik Jung),정윤식(Heon-Seop Shin),심도식(Do-Sik Shim),임성수(Sungsoo Rhim) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11

In order to improve the energy efficiency and the ride quality of the electric vehicle it is highly desirable to develope a light-weight suspension system with high travle ratio (which is the ratio of the fully extended length to the fully compressed length of the suspension). Air suspension systems with rubber tube are often considered as the optimal answer for such requirements. In this paper, a new light-weight air suspension system with high travel ratio is developed for the use in the electric vehicle. Also a FE-based multi-flexible-body dynamics (MFBD) model of the suspension system is developed as a tool for the design improvement of actual suspension system. The MFBD model includes the FE modeling of the rubber tube module as well as other essential parts of the air suspension system. The system parameters for the model were obtained from various experiments. The validity of the developed MFBD model has been shown by the comparison between the experimental results and the simulation results.

Body-Brain 공진화를 이용한 날개 생명체의 생성

심윤식(Yoon-Sik Shim),김창헌(Chang-Hun Kim) 한국컴퓨터그래픽스학회 2003 컴퓨터그래픽스학회논문지 Vol.9 No.2

오류 역전도 알고리즘의 학습속도 향상기법

심범식(Shim Bum Sik),정의용(Jung Eui Yong),윤충화(Yoon Chung Hwa),강경식(Kang Kyung Sik) 한국정보처리학회 1997 정보처리학회논문지 Vol.4 No.7

The Error BackPropagation (EBP) algorithm for multi-layered neural networks is widely used in various areas such as associative memory, speech recognition, pattern recognition and robotics, etc. Nevertheless, many researchers have continuously published papers about improvements over the original EBP algorithm. The main reason for this research activity is that EBP is exceeding slow when the number of neurons and the size of training set is large.In this study, we developed new learning speed acceleration methods using variable learning rate, variable momentum rate and variable slope for the sigmoid function. During the learning process, these parameters should be adjusted continuously according to the total error of network, and it has been shown that these methods significantly reduced learning time over the original EBP. In order to show the efficiency of the proposed methods, first we have used binary data which are made by random number generator and showed the vast improvements in terms of epoch. Also, we have applied our methods to the binary-valued Monk''s data, 4, 5, 6, 7-bit parity checker and real-valued Iris data which are famous benchmark training sets for machine learning.

경로 제어가 가능한 가상생명체를 위한 2단계 진화 알고리즘

심윤식(Yoon-Sik Shim),김창헌(Chang-Hun Kim) 한국정보과학회 2005 정보과학회논문지 : 시스템 및 이론 Vol.32 No.11·12

본 논문은 사용자의 제어가 가능한 3차원 물리 기반 가상생명체를 생성하는 2단계 진화 시스템을 제안한다. 기존의 방법은 가상생명체의 형상과 기동, 그리고 목표지점추적(target-following)과 같은 상위 레벨의 행위를 한꺼번에 하나의 진화 시스템으로 생성해냄으로 인하여 진화 단계에서의 사용자의 개입을 허용하지 않았다. 본 논문은 하나로 묶여있던 시스템을 다루기 용이한 두 개의 서브시스템으로 분리함으로써 사용자의 개입을 허용한다. 첫 번째 단계로 가상생명체의 몸체와 직진 기동을 위한 하위 레벨모터 컨트롤러가 진화 알고리즘(evolutionary algorithm)으로 동시에 생성된다. 두 번째 단계에는 생성된 기본 생명체 위에 주어진 경로를 따라가기 위한 상위 레벨 컨트롤러가 인공 신경망을 사용하여 탑재된다. 경로제어(path-following)를 위한 신경망의 연결 가중치는 유전자 알고리즘(genetic algorithm)을 사용하여 최적화되며 한번 진화된 신경망 컨트롤러는 어떠한 임의의 경로도 잘 따라감을 보여준다. 이로써 사용자는 모든 진화과정이 끝나지 않고도 중간단계에서 기호에 맞는 생명체를 골라내거나 버릴 수 있으며, 동일한 기본 생명체 위에 또 다른 형태의 상위레벨 행위를 생성하는 것도 가능해진다. 본 논문은 이러한 2단계 알고리즘과 함께 직진기동을 위한 새로운 분절 삼각 함수(piecewise sinusoidal) 컨트롤러를 제안하고 마개 실린더(capped-cylinder)를 기본 요소로 하는 가상생명체에 대한 효율적인 실시간 수중역학 모델링 기법도 함께 소개한다. We present a two-step evolution system that produces controllable virtual creatures in physically simulated 3D environment. Previous evolutionary methods for virtual creatures did not allow any user intervention during evolution process, because they generated a creature’s shape, locomotion, and high-level behaviors such as target-following and obstacle avoidance simultaneously by one-time evolution process. In this work, we divide a single system into manageable two sub-systems, and this more likely allowsuser interaction. In the first stage, a body structure and low-level motor controllers of a creature for straight movement are generated by an evolutionary algorithm. Next, a high-level control to follow a given path is achieved by a neural network. The connection weights of the neural network are optimized by a genetic algorithm. The evolved controller could follow any given path fairly well. Moreover, users can choose or abort creatures according to their taste before the entire evolution process is finished. This paper also presents a new sinusoidal controller and a simplified hydrodynamics model for a capped-cylinder, which is the basic body primitive of a creature.

LabVIEW 프로그램을 이용한 스마트 엘리베이터

윤다운(Da-Woon Yoon),심민식(Min-Sik Shim),정휘(Hwi Jeong),권윤성(Yoon-Seong Kwon),윤호준(Ho-Jun Yoon) 대한전기학회 2018 대한전기학회 학술대회 논문집 Vol.2018 No.11

Closure of Myelomeningocele Defects Using a Limberg Flap or Direct Repair

Shim, Jung-Hwan,Hwang, Na-Hyun,Yoon, Eul-Sik,Dhong, Eun-Sang,Kim, Deok-Woo,Kim, Sang-Dae Korean Society of Plastic and Reconstructive Surge 2016 Archives of Plastic Surgery Vol.43 No.1

Background The global prevalence of myelomeningocele has been reported to be 0.8-1 per 1,000 live births. Early closure of the defect is considered to be the standard of care. Various surgical methods have been reported, such as primary skin closure, local skin flaps, musculocutaneous flaps, and skin grafts. The aim of this study was to describe the clinical characteristics of myelomeningocele defects and present the surgical outcomes of recent cases of myelomeningocele at our institution. Methods Patients who underwent surgical closure of myelomeningocele at our institution from January 2004 to December 2013 were included in this study. A retrospective chart review of their medical records was performed, and comorbidities, defect size, location, surgical procedures, complications, and the final results were analyzed. Results A total of 14 patients underwent surgical closure for myelomeningocele defects. Twelve cases were closed with direct skin repair, while two cases required local skin flaps to cover the skin defects. Three cases of infection occurred, requiring incision and either drainage or removal of allogenic materials. One case of partial flap necrosis occurred, requiring secondary revision using a rotational flap and a full-thickness skin graft. Despite these complications, all wounds eventually healed completely. Conclusions Most myelomeningocele defects can be managed by direct skin repair alone. In cases of large defects, in which direct repair is not possible, local flaps may be used to cover the defect. Complications such as wound dehiscence and partial flap necrosis occurred in this study; however, all such complications were successfully managed with simple ancillary procedures.

A Posture Control for Two Wheeled Mobile Robots

Shim, Hyun-Sik,Sung, Yoon-Gyeoung Institute of Control 2000 Transaction on control, automation and systems eng Vol.2 No.3

In this paper, a posture control for nonholonomic mobile robots is proposed with an empirical basis. In order to obtain fast and consecutive motions in realistic applications, the motion requirements of a mobile robot are defined. Under the assumption of a velocity controller designed with the selection guidance of control parameters, the algorithm of posture control is presented and experimentally demonstrated for practicality and effectiveness.

Stabilization of Arsenic and Heavy Metals in Contaminated Agricultural Soil Around the Mine Areas

Yoon-Su Kim,Gwan-In Bak,Mi-Jeong Park,Jin-Soo Lee,Yon-Sik Shim 한국토양비료학회 2014 한국토양비료학회 학술발표회 초록집 Vol.2014 No.6