Commemoration Issue for Professor Il Byong Yoon's 60th Birthday Anniversary : Keys for Korean Bumble bees(Hymenoptera : Bombidae)

김창환,김미량 고려대학교 한국곤충연구소 1994 昆蟲硏究誌 Vol.20 No.1

한국산 뒤영벌 속의 검색표 및 진단형질. 김미량. 김창환(고대 부설, 한국곤충연구소) 留蟲硏究誌, 20: 69~77, 1994. 한국산 뒤영벌 속은 김과 이토(1987)에 의해 남북을 통틀어 총 7아속 20종이 발표되었으나 막상 뒤영벌 속을 동정코져 할 때 쉽게 활용할 수 있는 검색, 진단형질의 필요성을 느껴 이들 중 남한에서 채집되는 뒤영벌속 12종에 대한 검색표를 암, 수 각각 작성하고 진단형질을 실었다. On the bumble bees from Korean Penninsula were studied by Kim and Ito(1987), And we reexamined them, one subspecies was added(1993), But keys for identification were absent. In this paper, keys and diagnosis of bumble bees in Korea was prepared for clarity at a glance.

스텝모터의 위치오차 보정방법

김창환 大田大學校 産業技術硏究所 2013 산업기술연구소 論文集 Vol.24 No.2

In this paper, we propose a position error compensation method for a step motor controlled by micro-step algorithm. Generally, the shape of developed torque of a step motor is not pure sine wave, but has some harmonic components. Due to the harmonics of developed torque, a step motor controlled by micro-step algorithm can have some position error. In this paper, we first present position error analysis for a step motor driven by micro-step controller. Then, to enhance position control accuracy, we propose a position error compensation method based on the error analysis. Our method is computationally simple and can be easily implemented using a microprocessor. 본 논문에서는 마이크로스텝(micro-step) 제어 방식으로 구동되는 스텝모터(step motor)의 위치오차를 보정하는 방법을 제안한다. 보통 스텝모터의 발생토크는 완벽한 정현파가 아니고 약간의 고조파(harmonics) 성분을 포함하고 있는데 이로 인해 마이크로스텝 구동 시 위치오차가 발생하게 된다. 본 논문에서는 스텝모터의 위치오차 발생에 대해 엄밀하게 분석하고 이를 바탕으로 위치제어 정밀 도를 높일 수 있는 위치오차 보정방법을 제안한다. 제안된 위치오차 보정방법은 계산적으로 매우 간 단하고 마이크로프로세서를 이용하여 쉽게 구현 가능하다.

육상 도약선수와 비훈련자들에게 400,800 및 1,500M 최대질주가 혈액세포, 젖산 및 혈장 글루코스 농도에 미치는 영향

김창환 한국체육대학교 부속 체육연구소 1992 체육연구소논문집 Vol.10 No.-

The purpose of this study was to evaluate the changes of blood cell counter, lactate and Plasma glucose concentration to rest, 400, 800, and 1500m maximal running. Elite field athlete(n=6) and Physical education students(n=6) was participated as subjects of this research. Blood sampling during 400, 800, and 1500m maximal running was collected rest and in after 400, 800, 1500m maximal running. Blood cell was measured the Mean corpuscular volume(MCV), Red blood cell(RBC), Hematocrit(Hct), White blood cell(WBC) and Hemoglobin concentration(Hb), also lactate and plasma glucose concentration was measured by enzymatic method using spectrophotometer. The results and conclusion of this study was as follows: 1. Mean corpuscular volume(MCV) in both group was expressed decrease levels to 400, 800 and 1500m maximal running, with compared rest state, also field athlete was display high levels, with compared physical education sutdents 2. Red blood cell(RBC) of field athlete was shown significantly increased levels to compared rest state, Whearease untrained men was display increased levels in 400 and 1500m maximal running, but not in 800m maximal running, compared to rest state. Also, in comparison of both group, rest state of RBC was shown lower levels to field athletes, with compared untrained men. 3. White blood cell(WBC) of both group was shown significantly increased levels, also in comparison of both group, WBC was display the high levels in field athletes. 4. Lactate concentration of both group was shown significantly increased levels in field athletes, with compared untrained man. Lactate concentartion was expressed the high levels in field athletes. 5. Plasma glucose concentration of both group was observed significantly increased levels in field athletes, with compared untrained men. Plasma glucose concentration was display the high levels in field athletes.

Glutamate 투여가 카누선수의 경기력에 미치는 영향

김창근,김창환 韓國體育大學校附屬 體育科學硏究所 1993 韓國體育大學校附屬 體育科學硏究所論文集 Vol.12 No.1

The purpose of the study was to investigate the effect of glutamate supplementation during incremental exercise in canoeists. Eight elite Canoeists (Kayake) were participated in this study. The subjects had a given twice, where the glutamate supplementation (15.58 kg-1) and half dose of supplementation was given at 45 min and the rest of dose was given at 15 min prior to exercise. The test performance twice. One was performed in the Misalee and the other was in the lap. The data were analyzed using ANOVA with repeated measure. The results were summarized as follows. In both groups no significant was found Lactate, HR, LDH, GPT, Sodium, and Potassium. But many suggest that the additional supplement of glutamate can improve exercise performance.

미사일 Fin 액츄에이터용 서보모터의 외란 토크 억제 제어

김창환,Kim, Chang-Hwan 대전대학교 군사연구원 2003 군사학연구 Vol.1 No.-

In this paper, we propose a generalized disturbance torque suppression control scheme of servo motors for missile fin actuators. Our controller consists of both a model based feed-forward controller and a stabilizing feedback controller. The feed-forward controller is designed such that the output of nominal plant tracks perfectly the reference position command with a desired dynamic characteristics. The feedback controller stabilizes the overall closed loop system. Furthermore, the feedback controller contains a free function that can be chosen arbitrary. The free function can be designed so as to achieve both the suppression of disturbances and the robustness to model uncertainties. In order to illuminate the superior performance of our control scheme to the conventional ones, we present some simulation results.

쇠우렁에 奇生하는 有尾幼蟲의 種類와 感染調査 : 漢江下流 一部 地域을 中心으로

김창환,구성회 최신의학사 1973 最新醫學 Vol.16 No.4

There have been no proper investigation made about what kind of parasites are found and in what way cercarias are produced and separated as the season changes, and as so the rate of infection of Clonorchis sinesis in the district "Sootaekri", "Naegokri", "Haengjunaeri" adjacent to the Han River. The aim of this experiment is to examine c10sly the relation between the 2nd intermediate host and the infection by parasites so to make it a basis for the epidemilogical studies of Clonorchis sinensis The results obtained from the investigation are as follows. 1. The natural outflow of cercaria is the greatest in August among Jun., July and August. 2. The rate of infection by cercaria of Clonorchis sinensis to parafessarulus manchouicus is 7.3% at Naegokri, 3.2% at Sootaekri, 3.1% at Haegjunaeri. 3. The total rate of infection by different kinds of cercaria is 17.1% at Naegokri, 10% at Sootaekri, 13.1% at Haegjunaeri. 4. It is confirmed that the parasitic cerearia living on snails are pleurolophocercus cercaria (cercaria of Clonorchis sinensis). Echinostomecercaria, Furcocercus cercaria, and cyathocotyle cercaria.

고온 플라즈마를 이용한 Dioxin 저감기술 개발(2)

김창환,김신도,김종호,황의현 대한환경공학회 2004 대한환경공학회 학술발표논문집 Vol.2004 No.12

後鼻漏를 主訴로 한 慢性 副鼻洞炎 患者의 治驗 1例

김창환,선영재,임웅경,김현기,Kim, Chang-hwan,Sun, Young-jae,Lim, Woong-kyoung,Kim, Hyun-gi 대한한방안이비인후피부과학회 2003 한방안이비인후피부과학회지 Vol.16 No.2

Paranasal sinusitis is a common disease in the otorhinolaryngology area. It is the change of inflammation at the mucous membrane which surrounds paranasal sinus. Chronic paranasal sinusitis is a chronic inflammation disease with purulent, mucous rhinorrhea, postnasal drip and cough. The attacked period continues above three months and it repeats exacerbation and remission. We diagnosed and treated an outpatient who complains postnasal drip of chronic paranasal drip of chronic paranasal sinusitis based on the Oriental medical theories and had good result.

멀리뛰기 技術의 效率的 指導方案

金昌煥 韓國體育大學校 1982 論文集 Vol.4 No.-

The running long jump, which has been becoming the most favorite event of international sports and also the basic event of all sports, was originated at the time when the Pentatholn was added as an official event by the Ancient Olympic Games. Then, running long jump was selected as one of field and track events since 1st Olympic Games, and many recoreds-breaking have been made trhough many changes so far. Especially, American running long jumper, Bimon established a world record of 8.90m in 1968. Even today, it is current situation that the record of running long jump event is being improved day by day. The purpose of this study is to examine running long jump, maninly on assistant running motion for it. It is well concluded as shown below; First, in the physical condition, jumper is required to equip with proper weight, runn-power, quickness, muscular power, momentary power, endurance and it's control power. Second, jumper is required to exercise feet-stepping motion in the assistant running stage for the smooth condition of stamping for jumping, and also, to measure it's exact stride (or pace) and the assistant running distance. Third, the target mark of assistant running shall be established, and jumper shall learn how to do assistant running which will be the most suitable to this jumping, through many experiences. Foouth, acceleration and strong speed shall be accompanied by relax and a sense off rhythm. It is the vest shortcut for record breaking of running long jump that jumper is required to train and study new technique for running long jump, so that jumper can finish preparation for jump smoothly, by increasing his stamping feeling for the last 3 steps which are the intermediary of assistant running and jumping.

顔面神經麻痺에 대한 臨床 治驗例 보고

김창환,김현기,Kim, Chang-Hwan,Kim, Hyun-Gi 대한한방안이비인후피부과학회 2001 한방안이비인후피부과학회지 Vol.14 No.2

1. Five Clinical tests and case studies show that facial palsy can be improved under the treatment of Acupuncture, Infrared, Electroacupuncture. Herbal medicine and Herbal acupuncture. 2. The most common prodrome appears to be postauricular pain. including headache and dizziness. 3. As the more serious the paralysis becomes. the prodrome gets worse, and the treatment term extends. It also gets harder to perform prognosis 4. We confirm that either physical or mental overwork and stress can be the most likely cause of facial palsy.