製絲機 繰絲速度의 理論 處理

崔炳熙 서울대학교 1961 서울대학교 論文集 Vol.10 No.-

The theoretical treatment is give in this paper for longitudinal impact of silk yarn or raw silk yarn leads to a formula for the limiting breaking velocity. Because of periodical impact nature during the silk reeling process, this kind of studies are required for the safty operation of it. The limiting velocity of the reeling process is derived as 300 meters per minute with theoretical study. The theoretical treatment also leads to formulas for obtaining energy to any given stain. including rupture strain under different impact conditions so that the theoretical energy amount may be figured and designed with the automatic motion which is attached in the kennel system of the silk reeling machine. Meantine. a theoretical study of potential energy is mintioned to cause pressure on the winding reel during the reeling process.

의료서비스 품질 수준과 고객 행동의 관계 분석

최병희,강창욱 한국산업경영시스템학회 2000 한국산업경영시스템학회 학술대회 Vol.2000 No.추계

Factors related to the parallel use of complementary and alternative medicine with conventional medicine among patients with chronic conditions in South Korea

최병희,한동운,나선삼,임병묵 한국한의학연구원 2017 Integrative Medicine Research Vol.6 No.2

Background: This study aims to examine the characteristics and behavioral patterns of patients with chronic conditions behind their parallel use of the conventional medicine (CM) and the complementary and alternative medicine (CAM) that includes traditional Korean Medicine (KM). Methods: This cross-sectional study used the self-administered anonymous survey method to obtain the results from inpatients who were staying in three hospitals in Gyeongnam province in Korea. Results: Of the 423 participants surveyed, 334 participants (79.0%) used some form of CAM among which KM therapies were the most common modalities. The results of a logistic regression analysis showed that the parallel use pattern was most apparent in the groups aged over 40. Patients with hypertension or joint diseases were seen to have higher propensity to show the parallel use patterns, whereas patients with diabetes were not. In addition, many sociodemographic and health-related characteristics are related to the patterns of the parallel use of CAM and CM. Conclusion: In the rural area of Korea, most inpatients who used CM for the management of chronic conditions used CAM in parallel. KM was the most common in CAM modalities, and the aspect of parallel use varied according to the disease conditions.

새벽과 아침 사이

최병희 고요아침 2020 열린시학 Vol.25 No.1

MM-ALE 유한요소 시뮬레이션을 이용한 수중 어뢰폭발에서의 최악파편의 종단속도 추정

최병희,류창하 대한화약발파공학회 2019 화약발파 Vol.37 No.3

This paper was prepared to investigate the behavior of fragments in underwater torpedo explosion beneath a frigate or surface ship by using an explicit finite element analysis. In this study, a fluid-structure interaction (FSI) methodology, called the multi-material arbitrary Lagrangian-Eulerian (MM-ALE) approach in LS-DYNA, was employed to obtain the responses of the torpedo fragments and frigate hull to the explosion. The Euler models for the analysis were comprised of air, water, and explosive, while the Lagrange models consisted of the fragment and the hull. The focus of this modeling was to examine whether a worst-case fragment could penetrate the frigate hull located close (4.5 m) to the exploding torpedo. The simulation was performed in two separate steps. At first, with the assumption that the expanding skin of the torpedo had been torn apart by consuming 30% of the explosive energy, the initial velocity of the worst-case fragment was sought based on a well-known experimental result concerning the fragment velocity in underwater bomb explosion. Then, the terminal velocity of the worst-case fragment that is expected to occur before the fragment hit the frigate hull was sought in the second step. Under the given conditions, the possible initial velocities of the worst-case fragment were found to be very fast (400 and 1000 m/s). But, the velocity difference between the fragment and the hull was merely 4 m/s at the instant of collision. This result was likely to be due to both the tremendous drag force exerted by the water and the non-failure condition given to the frigate hull. Anyway, at least under the given conditions, it is thought that the worst-case fragment seldom penetrate the frigate hull because there is no significant velocity difference between them. 본 논문은 명시적 유한요소 해석을 이용하여 군함이나 수상함 아래의 수중에서 어뢰가 폭발할 때의 파편들의 거동을 조사하기 위하여 작성되었다. 본 연구에서는 LS-DYNA에서 라그랑주-오일러 (ALE) 접근법이라 불리는 유체-구조물 상호작용(FSI) 기법을 적용하여 어뢰파편과 선체의 응답을 관찰하였다. 오일러 모델은 공기, 물, 폭약으로 구성되며, 라그랑주 모델은 파편과 선체로 이루어져 있다. 본 모델링의 핵심은 최악파편이 어뢰로부터가까운 곳(4.5 m)에 위치한 선체에 파공을 일으킬 수 있는지 여부를 파악하는 데 있다. 시뮬레이션은 별도의 두단계로 수행되었다. 첫 번째의 예비해석에서는 팽창하는 어뢰의 외피가 찢어지는 데 폭약에너지의 30%가 소모된다는 가정 하에 수중폭발 시의 파편속도에 대해 잘 알려져 있는 실험결과를 토대로 최악파편의 초기속도를 결정하였다. 두 번째의 총괄해석에서는 최악파편이 선체에 부딪치기 직전에 보일 것으로 예상되는 파편의 종단속도를찾고자 하였다. 그 결과, 주어진 조건 하에서 최악파편의 초기속도는 매우 빠른 것으로 나타났다(400 및 1000 m/s). 하지만 충돌이 발생할 때의 파편과 선체 간의 속도차이는 불과 4 m/s 정도로 매우 작았다. 이 결과는 물에의한 큰 항력의 영향도 있지만 선체에 부여한 비파괴 조건도 영향을 끼쳤을 것으로 보인다. 하지만 적어도 본 논문에서 가정한 해석조건 하에서는 최악파편의 느린 상대속도로 인하여 선체에 파공이 발생하기는 어려운 것으로나타났다.

比律賓訪問紀行

崔炳熙 세계평화교수협의회 1977 廣場 Vol.1977 No.49

호흡기 알레르기 질환에 있어서 호염기구로부터의 항원 매개성 히스타민 유리

최병희,김미경,민경업,김유영 대한천식알레르기학회 1988 추계학술대회 초록집 Vol.1988 No.-

자동차용 에어벤트 덕트바디 성능 개선에 관한 연구

최병희,유재용,김정호 조선대학교 공학기술연구원 2019 공학기술논문지 Vol.12 No.2

In this study, a integral type air vent duct body was proposed and flow analysis of injection molding using FEM was performed to improve performance deterioration caused by leakage defect of air vent duct body for automobile. The integral type of air vent duct body was developed in a new shape to be applied to new vehicles in domestic automobile manufacturing company. The leakage test was performed for performance evaluation and the flow analysis of injection molding was performed for new product. The proposed integral type air vent duct body was possible to eliminate the product defects caused by leakage in air vent duct body joint and to optimize the product injection molding process and to make multi product injection molding by the flow analysis. In addition, it was possible to provide application data for predicting feasibility of newly developed products and securing reliability

교통행동 통제소재와 위험운전행동의 관계

최병희,오주석,박선진,이순철 한국산업및조직심리학회 2015 한국심리학회지 산업 및 조직 Vol.28 No.1

This study investigated the relationship between Traffic Locus of Control(T-LOC) and Reckless Driving Behavior, by using correlation analysis and a hierarchical regression for the data gathered through 294 adults. First, this study examined correlation analysis between T-LOC and Driving Behavior Determinants(DBD). As a result, “Self” and “Other drivers” factors of T-LOC were positively correlated with ‘Interpersonal Anger’ factor, “Vehicle/Environment” factor was positively correlated with ‘Avoiding Problems’ factor, and external “Fate” was positively correlated with ‘Avoiding Problems’, ‘Benefit/Stimulus Seeking’, ‘Interpersonal Anger’ and ‘Aggression’. Whereas, there was positively correlated between all T-LOC and ‘Interpersonal Anger’. The result to examine influence of T-LOC on Reckless Driving Behavior was showed that T-LOC had significant amount of explained variance on Speed Driving and Wild Driving of Reckless Driving Behavior. And this showed that Fate effected on all Reckless Driving Behavior. That is, drivers who think that an accident caused by a ‘fate’ which can’t be observed, unlike their actions, other drivers, vehicles and driving environments tend to drive more dangerously.

의료서비스 품질개선을 위한 모형 및 절차

최병희,강창욱 한국산업경영시스템학회 1999 한국산업경영시스템학회 학술대회 Vol.1999 No.춘계