태권도 선수의 운동상해 예방을 위한 조사연구 : 전국 고등학교 태권도 선수들을 대상으로

김원규,이종희,장완성 경희대학교 체육대학 한국체육과학연구소 2003 體育學論文集 Vol.31 No.-

Taekwondo players by analyzing the primary factor of exercise injury and researching on the actual condition related to media treatment. To dot it, male and female players at 14 High Schools in Korea, who are registered in Korea, Taekwondo Association, were selected as the subjects of this study. The result of this research is as follows. 1) 73 males(52.5%) and 59 females(42.4%) appeared to have exercise injury. 2) The parts of exercise injury about male appeared to be ankle joint 87 times (11.0%), foot 80 times (10.1%), knee joint 59 times (7.4%) in the order of the frequency of occurrence and about female to be ankle joint 87 times (11.0%), foot 74 times (9.3%), knee joint 63 times (8.0%) 3) The type of exercise wound in male appeared to be bruise 154 times (19.4%), muscular pain 94 times(11.8%), and in female bruise happen 134 times(16.9%) and muscular pain 73 times(9.2%) in the order of the frequency. 4) Injury was experienced during exercise among 22 persons(15.8%) in class pin and among 19 persons (13.7%) in both class bantam and feather. 5) All pin, flight, bantam, feather and heavy weight classes showed ankle as the most frequent exercise injury region among all the injury parts during exercise. Light weight class had knee joint 25 times (3.2%) and both welter and middle classes indicated foot area as the most often wounded part. 6) In injury types happened during exercise, bruise turned out to be 298 times(31.7%), the highest level. Next, the occurrence rate of muscular pain was 20.8%(167 times). 7) It is true 165Cm to 170Cm tall persons have most exercise injuries : 39 persons (28.1%). Next, 170 Cm to 175Cm tall players with injury were 28 persons (20.1%). 8) The area injured most often during exercise was that of ankle joint as 174 times (21.9%) in 160 to 165Cm, 165 to 170 Cm 170 to 175Cm tall players and players over 185Cm Foot was most frequently hurt part as 21 times (27%) in 175Cm to 180Cm tall players. Hand & foot joint and knee joint 7 times (0.9%) in 180 to 185 Cm tall players. 9) Players under 160Cm height and 160 to 165Cm, 165 to 170Cm, 170 to 175Cm tall players and players over 185Cm, showed the highest rate of bruise as the type of injury occurred during exercise and next to it, muscular pain. 175 to 180 Cm players experienced muscular pain 33 times (4.1%), bruise 31 times(3.9%) and 180 to 185 Cm players went through with bruise 17 times(2.l%) and fracture of a bone 8 times (1.0 %). 10) When it comes to total exercise period, 54 persons(38.8%), the highest rate of male, exercise over 4 hours and as to female, 50 persons The purpose of this study is to investigate to offer the basic materials essential for protection from exercise injury of (36.0%) exercise over 4 hours. 11) The injured cause of exercise in male was their carelessness (30 persons : 22.7%), the lack of preparatory exercise and the foul of opponent players (10 persons each : 7.6% each), Instead, for women, excessive work was the cause of exercise injury in 13 persons (9.8%) and their carelessness was that of the injury in 11 persons(8.3%). 12) Male chose emergency treator as following : medical experts(19 persons : 14.4%), the person himself, a coach or an inspector (16 persons : 111%). Female chose emergency treaters following : medical expert (21 persons : 15.9%) and a coach or an inspector (16 persons : 12.1%). 13) Thorough warm-up & arrangement exercise (47 persons : 14.0%), complete recovery from tiredness, wearing protective device, being well-nourished, mental & psychological stability, reasonably held matches in numbers, and etc are shown in order as the protective way of exercise injury in males. On the other hand, in females, complete recovery from tiredness(43 persons : 12.8%), thorough warm-up & arrangement exercise, wearing protective device, mental & psychological stability, being well-nourished, reasonably held games in numbers, appear in the order of frequence.

건축공사시방서에서의 KS규격의 국제인증방안에 관한 연구

김경식,이재섭,김용수,이규진,조용훈,최완철,전재열,이현수,구재동,이기환 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

The purpose of this research is make out construction specifications for International Construction. Using off-shore products incur cost increase and longer delivery term of construction. and inconvenient on International Construction. Expand the range of additional local products conforming to performance. Life Cycle Cost. maintainability. operability. user's acceptability, etc.. And this study is suggest the standard formats and the techniques for construction specification.

간헐적 양압호흡기를 이용한 호흡운동치료 후 근 이영양증 환자의 폐기능 변화

김기송,이규완,오덕원 한국전문물리치료학회 1999 한국전문물리치료학회지 Vol.6 No.3

CT performance phantom을 이용한 cone beam형 전산화단층영상의 특성

한충완,김규태,최용석,황의환 대한구강악안면방사선학회 2007 Imaging Science in Dentistry Vol.37 No.3

Purpose : To evaluate the characteristics of (widely used) cone beam computed tomography (CBCT) images. Materials and Methods : Images were obtained with CT performance phantoms (The American Association of Physicists in Medicine; AAPM). CT phantom as the destination by using PSR 9000N™ dental CT system (Asahi Roentgen Ind. Co., Ltd., Japan) and i-CAT CBCT (Imaging Science International Inc., USA) that have different kinds of detectors and field of view, and compared these images with the CT number for linear attenuation, contrast resolution, and spatial resolution. Results : CT number of both PSR 9000N™ dental CT system and i-CAT CBCT did not conform to the base value of CT performance phantom. The contrast of i-CAT CBCT is higher than that of PSR 9000N™ dental CT system. Both contrasts were increased according to thickness of cross section. Spatial resolution and shapes of reappearance was possible up to 0.6 mm in PSR 9000N™ dental CT system and up to 1.0 mm in i-CAT CBCT. Low contrast resolution in region of low contrast sensitivity revealed low level at PSR 9000N™ dental CT system and i-CAT CBCT. Conclusion : CBCT images revealed higher spatial resolution, however, contrast resolution in region of low contrast sensitivity was the inferiority of image characteristics.

절삭공정의 성능예측에 관한 연구

황규완,김순경,전언찬 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.2

This paper focuses on the aurtomatic selection of optimal cutting condition and cycle time on multispindle metal cutting machine. The several mathematical relationships were formulated for simultaneous selection of machining parameters and tool changing scheme. In this research we two step generative approach ; step 1 is mathematical modeling for the selection of optimal cutting conditions and the other is GMDH-TYPE modeling to find prediction equation of system performance. Thus in this paper, mathematical machining models combined with a heuristic GMDH-TYPE modeling to estimate the system performance. These models are developed computer programs for practical applocation and it was shown that the proposed approach has a good potential and offeers a valuable tools to analyze the metal cutting system.

뉴로 컴퓨팅 시스템 시뮬레이션 언어 개발 및 응용환경의 구축

홍규완,김정수,이수동 울산대학교 1995 공학연구논문집 Vol.26 No.1

대부분의 신경망 시뮬레이션 프로그램은 기존의 언어(C,PASCAL,FORTRAN등)로 구현되었다. 기존의 언어들은 신경망구조와 신경망의 동적행위를 제어하는 데 적합한 자료구조와 문장들을 가지고 있지 않기 때문에 시뮬레이션 프로그램을 작성하거나 모델의 변경에 어려움이 많다. 본 논문에서는 신경망 시뮬레이션 프로그램을 작성하는데 적합한 언어를 설계하였다. 특히 제안된 언어는 신경망 구조를 쉽게 표현할 수 있고 신경망의 동작행위를 효율적으로 기술하기 위하여 층마크로 정의 개념을 도입하였다. 언어는 두개의 DIVISION으로 구성되었다. 하나는 망구조를 기술하기 위한 NETWORK STRUCTURE DIVISION이고 다른 하나는 신경망의 행위를 제어하는 PROCEDURE DIVISION이다. Most of neural network simulation programs have been implemented with the conventional computer languages. It is difficult to implement simulation programs and is various to build neural network, because the languages have not data structures and statements suitable for expressing neural network structures and controlling neural behaviors. This paper describes a neural network simulation language, specifically designed for the development and modeling of neural network applications. It has a layer macro definition concept to express the arbitrary network structures and dynamic neural behaviors easily. It consists of the two divisions. First division describes the network structures. Second division controls the network behaviors.

상부 조기 위암 환자의 복강경하 상부 위절제술 3례 경험

조규석,김형철,박경규,이문수,송옥평,임철완,신웅진,주종우,유기원 순천향의학연구소;Soonchunhyang Medical Research Institute 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Background : The reported incidence of early gastric cancer located in the upper portion of the stomach has been increasing with the recent advances in its diagnosis and screening. Recently, we have successfully performed laparoscopic assisted proximal gastrectomy and gastric tube reconstruction without pyloroplasty on three patients with early gastric carcinoma localized to the upper third of the stomach. We describe our modification of this procedure in this report. Method : After creating an surgical pneumoperitoneum, the stomach was mobilized using laparoscopic coagulating shears. Upper half of the greater curvature and three-quarters of the lesser curvature were then dissected along with regoinal D2 lymphadenectomy. This was followed by a 5 cm, longitudinal mini-laparotomy in the upper abdomen, and the construction of the exteriorized stomach with a gastric tube measuring 20 cm long and 4 cm wide. Reconstruction with an esophagogastrostomy was performed using a circular stapler. Result : No post-operative morbidity or mortality was observed in this small series of patients. The average operative time was 250 minutes (range 220-300 minutes), and the average blood loss was 150 ml (range 90-180 ml). The mean number of lymph nodes harvested during these laparoscopic proximal gastrectomies was 24 nodes (range 22-25 lymph nodes). The average postoperative hospital stays was 7.5 days (range 7-8 days). Conclusion : Our technique of laparoscopic assisted proximal gastrectomy and gastric tube reconstruction without phloroplasty offers a minimally invasive technique with the potential of impoving the post-operative quality of life patients with an early-stage proximal gastric cancer.

다발성 대장암 간전이 환자의 간절제를 위한 새로운 시도

주종우,김형철,임철완,신응진,조규석,유기원,송옥평,홍대식,박성진,조준희,이혜경,김희경,권계원,고은석 순천향의학연구소;Soonchunhyang Medical Research Institute 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Multiple bilobar liver matastases (MBLM) are the main cause of low resectability in the colon cancer liver metastases. The authors experienced one case of initially non-resectable colon cancer liver metastases. He was curatively and safely treated with a two-stage hepatectomy using the new method of future remnant liver volume growing. A 54-year-old man was referred to our department with the sigmoid colon cancer combined with MBLM, which were checked in two small metastatic lesions in the left lobe and five large sized lesions in the right lobe in the computed tomogram (CT). A laparoscopic assisted anterior resection was primarily performed. We performed the 1^(st) stage hepatectomy 3 weeks after the colon resection. Intra-operative Ultrasonogram (US) found 9 small superficial metastatic lesions in the left lobe. All that lesions were completely removed by non-anatomical wedge resection. An occlusion ballon catheter was placed in the right portal vein through a small branch of the inferior mesenteric vein at that time. The future remnant liver volume was sufficiently increased 3 weeks after the 1^(st) hepatectomy. A right hepatectomy was safely performed 22 days after the 1^(st) hepatectomy. The patient received a regional chemotherapy (interleukin2 based immuno-chemotherapy through hepatic artery) for 4 months, then received 9 cycles of systemic chemotherapy (biweekly Oxaliplation, leucovorin, plus 5-fluorouracil) without any recurrence evidence.

하부팽창형 임프란트의 유한요소 분석 및 골형성에 대한 연구

한석환,김영규,민경기,조완석,권종진 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.3

The aim of this study was to evaluate by finite element analysis influence of investigated expanding implant on stress distribution and to observe biocompatibility, bone formation feature and change in the bone contact area around the explanding implant through experimental animal study. FEA models of the mandible were constructed based on three-dimensional graphic data of the bone structure around an osseointegrated implant, analysis of stress distribution followed by 100N vertical, 50N horizontal was done. And in the animal study, expanding implant were placed in the mandibles of eight Korean mongrel dogs and analyzed the results with histomorphometric measurements. In finite element analysis, compressive stresses are produced at the bone tissue surrounding the implant, and the contact area between the implant and the bone tissue is increased, which result in increased resistance to horizontal and vertical pressure loads. In the histomorphometric analysis, the measured ratio of the contact surface and bon density between implant and bone was similar to those of the controlled group from 6 weeks. It is thought that increased horizontal and vertical resistance is a great help to the immediate loading on expanding implant and that there needs standardizing quantitative measurement of implant stability and osseointegration to determine whether or not to use the functional loading and to reduce the total treatment period reliably by placing functional loading on each implant based on both bone quality and implant stability.

TMS320F240을 이용한 PWM 인버터 유도전동기 구동 시스템의 전도노이즈 저감을 위한 스위칭 기법

朴奎炫,金利勳,元忠淵,金奎植,崔世琓,咸年根 성균관대학교 2003 학술회의지원논문목록집 Vol.2003 No.-

PWM 인버터에 의해 구동되는 유도전동기에 발생되는 고주파 커먼 모드 전압은 전도성 EMI, 전동기 접지전류, 베어링 전류 및 다른 원치 않는 결과의 주원인이 된다. 인버터 제어의 무효벡터 스위칭 상태는 나머지 유효벡터 스위칭 상태에 비교하여 큰 커먼 모드 전압을 일으킨다. 그러므로 이 논문은 커먼 모드 전압을 완화하는 스위칭기법을 다룬다. 즉 정현파 PWM기법을 기본으로 한 커먼 모드 전압 제거방법을 제안하였다. PWM 신호는 각각의 정현파 기준신호와 120˚위상차가 나는 3개의 캐리어 파형과 비교하여 발생된다. 시뮬레이션과 실험적결과는 제안된 PWM 기법에서 커먼 모드 전압이 종래의 PWM 기법보다 약 66% 더 저감됨을 보였다. High frequency common mode voltage produced by PWM inverter fed induction motor is a major cause of conducted EMI. creation motor ground currents, bearing currents and other hamful products. The zero switching states of inverter control invoke large in comparison with the non-zero switching state of inverter control. We proposed a common mode voltage reduction method based on sinusoidal PWM technique. PWM signal are generated by comparing respective sinusoidal reference signal with three triangular carrier wave displaced of 120˚. Simulation and experimental result show that common mode voltages in the propsed PWM technique are reduced by approximate 66% more than conventional PWM technique.