성장에 대한 유전적.환경적 요인의 영향

최민형,김덕곤,이진용,Choi, Min-Hyung,Kim, Deog-Gon,Lee, Jin-Yong 대한한방소아과학회 2010 대한한방소아과학회지 Vol.24 No.3

Objectives: The purpose of this study is to estimate genetic and environmental factors which can effect growth, and predict final height using this factors. Methods: Correlation analysis and regression analysis were conducted between measurements of height and Genetic & environmental factors through survey from 1352 child & adolescent patients. Results: Factors which have correlation with height percentile are MPH(Mid-Parental Height), NBW(Neonatal body weight), anorexia, dyspepsia, atopic dermatitis, frequency of breakfast and quality of sleeping time. MPH has moderate relation, NBW and anorexia have fair relation, and other factors have linear but poor relation. Regression equation from factors which have correlation and height percentile has 26.9% of predictive power. Regression equation considering only genetic factor has 20.4%. MPH has the most effect on height percentile. Anorexia has more effect than NBW. Other factors also have small and similar effect. Conclusions: Height of parents has the most effect on growth, anorexia, dyspepsia, atopic dermatitis, frequency of breakfast and quality of sleeping time also has effect.

성장에 영향을 주는 유전적.환경적 요인 분석에 대한 예비 연구

최민형,이진용,Choi, Min-Hyung,Lee, Jin-Young 대한한방소아과학회 2011 대한한방소아과학회지 Vol.25 No.3

Objectives: Purpose of this study is to analyze and to estimate which and how much genetic and environmental factors have affected on growth. Also, a method of final height prediction can be developed from this study results. Methods: Correlation analysis and categorical regression analysis were conducted between genetic and environmental factors correlated with the final adult height, through survey from 171 male. Results: Mid parental height, neonatal body weight, intake frequency of beef, chicken, milk, fruits and coffee, sleep quantity and quality during the elementary school and sleep quantity during the middle school have affected on the final adult height. And a regression equation with 0.494 for coefficient of determination was obtained. Conclusions: Mid-parental-height has the most affected on the final adult height. Among environmental factors, food and sleep have significantly affected, but exercise doesn't. Among foods, meal, beef, and milk intake have remarkably affected on the final height, and chicken and fruit also have affected in some degree, but coffee has affected badly. Among sleep habits, sleep quantity during the elementary school has the most affected, sleep quality during the elementary school and sleep quantity during the middle school also have affected in some degree on final height. The younger the age is, the more sleep have affected and sleep quantity have more affected than sleep quality. Neonatal weight also has remarkably affected on the final height. Through this analysis, the final adult height can be predicted using regression equation which covers 49.4% of genetic and environmental factors.

경희의료원 한방소아.청소년과 외래 환자의 주소증에 대한 연구(2009년 3월~2010년 2월)

최민형,김덕곤,이진용,Choi, Min-Hyung,Kim, Deog-Gon,Lee, Jin-Yong 대한한방소아과학회 2010 대한한방소아과학회지 Vol.24 No.3

Objectives: The purpose of this study is investigate about chief complaints of pediatric outpatients in the oriental medicine hospital and search for a latest of patients and their symptom. Methods: The study was composed of 3024 new patients aged between 0 and 20 who had been visited pediatrics in Kyung Hee oriental medicine hospital from 2009 March to 2010 February. Results: In age distribution, 1 year old child have most visited, and the number of the patients have fallen sharply as age have increased. The most visited month is August, and the least is November. In systemic division of chief complaints, in order of respiratory part, growth part, restorative herb medicine part, digestive part, neurologic & psychologic part, dermatologic part visited in patients number, and in single chief complaints, in order of growth, restorative herb medicine, anorexia, rhinosinusitis, cold, atopic dermatitis, seizure & epilepsy have visited. As for age and systemic division, between 1 and 6 years old, the patients of respiratory division have most visited, more than 7 years old, growth division. As for age and single chief complaints, in 0 year old, seizure & epilepsy have most visited, between 4 and 6 years old, rhinosinusitis, more than 7 years old, growth. Growth and respiratory division have increased the most in August, restorative herb medicine and digestive division have increased the most in September. In single chief complaints, patients of growth have most visited in most of time, but in September and November patients of restorative herb medicine have visited the most. Conclusions: The most visited division was respiratory part, and the most visited chief complaints was growth. More data of patients should be accumulated for further study, and we expect more specific study would be done about many kinds of disease in basis of this study.

오브젝트의 행위 명세 시각화에 관한 연구

최민형(Min-Hyung Choi),홍찬기(Chan-Ki Hong),이경환(Kyung Whan Lee) 한국정보과학회 1991 한국정보과학회 학술발표논문집 Vol.18 No.2

재사용에 있어서 객체 지향 방법론에 의한 소프트웨어 컴포넌트의 합성 방법은 소프트웨어 개발에 유연성(flexibility)과 생산성 향상에 기여한다. 그러나 컴포넌트의 구조나 오브젝트의 행위(behaviour)를 추상화된 형태로 나타내는 방법의 결여로 인해 재사용시 컴포넌트에 대한 이해에 어려움이 있다. 본 연구에서는 컴포넌트의 구조와 행위를 소스 코드와 설계 정보로부터 추출하여 다이아그램의 형태로 시각화 시키는 행위 추상화기를 구현하였다. 본 시스템은 문제영역 분석에서 도출된 정보를 정형화하여 추후 프로젝트 완료후 재사용 부품의 선정이나 이해를 증진시키며, 프로젝트 전 단계에 걸쳐 일관된 표현기법 사용이 가능하다.

재사용 모듈의 분류에 의한 검색 시스템 구축에 관한 연구

최민형(Min-Hyung Choi),김민상(Min-Sang Kim),김병관(Byung-Kwan Kim),홍찬기(Chan-Ki Hong),이경환(Kyung-Whan Lee) 한국정보과학회 1991 한국정보과학회 학술발표논문집 Vol.18 No.1

현재, 소프트웨어 개발 비용이 점점 증가해감에 따라서, 이를 극복하고 소프트웨어의 품질 및 생산성을 향상시키기 위한 연구들 중, 기존의 소프트웨어를 새로운 소프트웨어 개발시 다시 이용하려는 소프트웨어 재사용의 개념이 연구되고 있다. 본 논문에서는 이러한 재사용 시스템 중에서 재사용 가능한 컴포넌트에 대한 검색을 지원하는 검색 시스템을 재사용 라이브러리 및 라이브러리 관리 시스템과 함께 구성했으며, 이를 통해서 원하는 컴포넌트를 쉽고 편리하게 찾을 수 있도록 지원해 준다.

열화상 카메라를 통한 호흡 영상 전처리 및 호흡 추적 연구

이도경(Dokyeong Lee),최민형(Min-Hyung Choi),최성준(Seongjun Choi),홍민(Min Hong) 한국컴퓨터교육학회 2023 한국컴퓨터교육학회 학술발표대회논문집 Vol.27 No.2

항공기와 유사한 게임 개발환경 구축을 위한 소프트웨어 설계

김효관(Kim, Hyo-gwan),한규석(Han, Gyu-Seok),장원(Jang, Won),최민형(Choi, Min-Hyung),최영규(Choi, Young-Gyu) 한국정보전자통신기술학회 2013 한국정보전자통신기술학회논문지 Vol.6 No.2

실제 항공기에 탑승하여 교육을 수행 할 수 있으나 초등 비행 시 숙련도가 떨어지는 조종사를 교육하기 위한 비용과 위험이 만만치 않다. 또한 상당한 기술을 필요로 하는 고등 비행 훈련 시 따르는 위험도 마찬가지이다. 이러한 것들을 모의 소프트웨어를 통해 훈련에 따르는 위험과 비용을 줄일 수 있으며 예상되는 위험 상황을 가상으로 하여 실제 상황처럼 전개해 볼 수 있는 장점이 있다. 본 논문은 실제 항공기의 비행 역학 특성 및 무장 탄도학이 고려된 게임 개발을 위한 소프트웨어 플랫폼 기반을 설계함으로써 조종사가 되고 싶은 학생들의 항공기에 대한 이해를 돕기 위함이다. The actual aircraft flight training can be done, but falls pilots primary flight training skills to the many risks and costs are formidable. It also requires considerable skill to follow at a higher risk of flight training is the same. These things through software simulation training can reduce the risk and cost of the expected risk situations such as virtual reality development and has the advantage that you can try. In this paper, the characteristics and actual aircraft flight dynamics of the considered armed ballistics software platform for game development by designing a student wants to become a pilot in the aircraft is to help you understand.

가상 건축물 뷰어를 위한 GPS와 가속도센서 기반의 모바일 증강현실 시스템

김은미(Eun-Mi Kim),임순범(Soon-Bum Lim),최윤철(Yoon-Chul Choy),최민형(Min-Hyung Choi) 한국멀티미디어학회 2006 한국멀티미디어학회 학술발표논문집 Vol.2006 No.2

가상 건축물이나 소실된 문화재의 시뮬레이션을 위한 증강현실 기법에서 기존의 연구들은 특수 장비 또는 실외의 장거리에서 사용이 어려운 마커를 사용하였다. 본 논문에서 제안하는 모바일 증강현실 시스템은 휴대폰의 GPS와 가속도 센서를 이용하여 마커 없이도 사용자가 바라보는 위치 및 방향을 판단하며, 최대한 서버의 부하가 적도록 설계하였다. 서버는 클라이언트로 부터 얻은 GPS의 위치정보와 카메라의 영상정보를 미리 정의되어 있는 3D 객체와의 영상정합을 통하여 위치와 방향을 판단한다. 또한 계산된 위치와 방향의 3D 가상객체와 정합정보를 클라이언트로 전송하면 이를 받아 카메라 영상 위에 정합한다. 또한, 이후 추가적인 서버의 접속 없이 가속도 센서로 감지한 사용자의 움직임에 따라 3D 객체의 변환을 수행한다. 본 연구는 Java Wireless Toolkit 2.3 에뮬레이터를 기반으로 GPS와 3축 가속도 센서를 이용하여 구현되었다.

가상 건축물 뷰어를 위한 클라이언트 중심의 모바일 증강현실 시스템

김은미(Eun Mi Kim),임순범(Soon-Bum Lim),최윤철(Yoon-Chul Choy),최민형(Min-Hyung Choi) 대한전자공학회 2006 대한전자공학회 학술대회 Vol.2006 No.11

Previous augmented reality systems for a simulation of virtual buildings and destroyed cultural treasures used specific equipments, and markers. But specific equipment is expensive, marker is hard to run on outdoor and has high computational cost. So this paper designs mobile augmented reality system that use mates user’s position, direction without a marker and has low computational cost. User sends server the positon, picture that is obtained by GPS, camera on handheld device. And server estimates user’s positon, direction and defferent proportions of 3D object with the real world to use received informations and sends the result to user. When user moves a handheld device, accelerometer detects it and transforms 3D object without additional connections with server.

The Effect of Shoe Heel Types and Gait Speeds on Knee Joint Angle in Healthy Young Women - A Preliminary Study

츄음반타 ( Vantha Chhoeum ),왕창원 ( Changwon Wang ),장승완 ( Seungwan Jang ),민세동 ( Se Dong Min ),김영 ( Young Kim ),최민형 ( Min-hyung Choi ) 한국인터넷정보학회 2020 인터넷정보학회논문지 Vol.21 No.6

The consequences of wearing high heels can be different according to the heel height, gait speed, shoe design, heel base area, and shoe size. This study aimed to focus on the knee extension and flexion range of motion (ROM) during gait, which were challenged by wearing five different shoe heel types and two different self-selected gait speeds (comfortable and fast) as experimental conditions. Measurement standards of knee extension and flexion ROM were individually calibrated at the time of heel strike, mid-stance, toe-off, and stance phase based on the 2-minute video recordings of each gait condition. Seven healthy young women (20.7 ± 0.8 years) participated and they were asked to walk on a treadmill wearing the five given shoes at a self-selected comfortable speed (average of 2.4 ± 0.3 km/h) and a fast speed (average of 5.1 ± 0.2 km/h) in a random order. All of the shoes were in size 23.5 cm. Three of the given shoes were 9.0 cm in height, the other two were flat shoes and sneakers. A motion capture software (Kinovea 0.8.27) was used to measure the kinematic data; changes in the knee angles during each gait. During fast speed gait, the knee extension angles at heel strike and mid-stance were significantly decreased in all of the 3 high heels (p<0.05). The results revealed that fast gait speed causes knee flexion angle to significantly increase at toe-off in all five types of shoes. However, there was a significant difference in both the knee flexion and extension angles when the gait in stiletto heels and flat shoes were compared in fast gait condition (p<0.05). This showed that walking fast in high heels leads to abnormal knee ROM and thus can cause damages to the knee joints. The findings in this preliminary study can be a basis for future studies on the kinematic changes in the lower extremity during gait and for the analysis of causes and preventive methods for musculoskeletal injuries related to wearing high heels.