유화처리 바이오디젤이 도포된 콘크리트의 침투깊이 판정

백철 ( Baek Cheol ),김태우 ( Kim Tae-woo ),이재진 ( Lee Jae-jin ),이동윤 ( Lee Dong-yun ),한민철 ( Han Min-cheol ),한천구 ( Han Cheon-goo ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.2

This study is to provide a evaluation method for the penetration depth of emulsified refined bio diesel(ERBD)applied to a surface of the concrete by using water absorption capability of the concrete. The concrete applied with ERBD was immersed at water for 1 min., 5min., and 10 min. and then was checked the brightness with elapse of time. Test results indicated that there was clear difference between ERBD part and non ERBD part in concrete specimen after measuring the brightness until 120min.

Alpha : 자바 시각화 도구 Java Visualization Tool

김철민 한국컴퓨터교육학회 2004 컴퓨터교육학회 논문지 Vol.7 No.3

웹 환경과의 연동, 병렬 프로그래밍, 객체지향 프로그래밍, 안전성(컴파일 시간 에러 검출, 예외 처리 기법)과 이식성, GUI 등을 지원함으로써, 프로그래밍 언어 자바(JAVA)의 활용도가 점점 증가하고 있다. 객체지향 프로그래밍 언어로서 자바는 클래스, 인스턴스, 정보은닉, 상속, 다형성 등 객체지향 개념들에 기반하고 있다. 그러나 자바 프로그램 수행시 이들과 관련된 제반 현상이 자바가상기계(Java Virtual Machine) 내부에 감추어지기 때문에, 자바 언어를 배우거나 활용하는 대부분의 사용자들이 큰 어려움을 겪는다. 이 문제에 대한 효과적 해결책으로서, 본 연구에서는 자바가상기계 내부의 현상을 객체지향 개념과 연계시켜 시각화해 주는 도구 Alpha를 개발하였고, 본 논문은 그 설계와 특징들을 기술하고 있다. Alpha는 실용성과 확장성을 높이기 위해 MVC(Model-View-Controller) 구조로 설계되었고, 이를 통해 자바가 상기계 내부의 현상(인스턴스 생성 및 소멸, 메쏘드 호출 및 본귀, 필드 접근, 인스턴스 간의 상호 참조관계 변화, 쓰레드의 수행 흐름 등)을 사용자의 수준이나 활용 목적에 맞게 다양한 방식으로 시각화시켜 준다. Java provides support for Web, concurrent programming, safety, portability, and GUI, so there is a steady increase in the number of Java users. Java is based on the object-oriented concepts such as classes, instances, encapsulation, inheritance, and polymorphism. However the JVM(Java Virtual Machine) hides most of the phenomena related to the concepts. This is why most of Java users have much difficulty in learning and using Java. As a solution to the problem, I have developed a tool Alpha that visualizes the phenomena occurred in the JVM from the standpoint of the concepts and will describe the design and features of the tool in this paper. For practicality and extendability Alpha has an MVC(Model-View-Controller) architecture and visualizes the phenomena such as object instantiations, method invocations, field accesses, cross-references among objects, and execution flows of threads in the various ways according to the levels and purposes of the users.

관광산업의 정보 탐색을 위한 전자상거래 에이전트 시스템과 온톨리지 기술 연계

김민철,이동철 제주대학교 관광과경영경제연구소 2004 産經論集 Vol.20 No.-

Lutembacher 증후군 환자 증례 보고

김성범,서정주,곽철훈,김상민,이보라,민선경,황은구,김용인,조욱현,최석구 인제대학교 2008 仁濟醫學 Vol.29 No.-

Lutembacher's syndrome is rare combination of mitral stenosis (MS) and atrial septal defect (ASD). The hemodynamic interplay between the MS and ASD leads to wide variation of clinical presentation. Here we describe a 43-year-old female with Lutembacher's syndrome and tricuspid regurgitation with pulmonary hypertension, who underwent direct closure of ASD and tricuspid valvuloplasty successfully. We also reviewed other literatures in an effort to increase awareness of this condition.

6082 A1합금의 시효거동

김인배,김순호,강민철,윤인택 釜山大學校生産技術硏究所 1998 生産技術硏究所論文集 Vol.55 No.-

6082 Al합금의 미세조직 및 기계적 성질에 미치는 시효처리의 영향을 시차주사열분석기, 투과전자현미경 및 미소경도 시험을 통하여 조사하엿다. 170℃, 9시간의 시효열처리에 의해서 118Hv의 최대경도값이 얻어졌으며, 이는 GP zone과 β'상의 석출에 의한 것이었다. 최대경도 이후의 경도 감소는 완만한 감소를 나타내었는데 이러한 결과는 β'에서 β로의 변태속도가 매우 늦다는 것을 의미한다. 이 합금의 석출과정은 GP zone →불안정 hcp Mg₂Si(β') →평형 fcc Mg₂Si(β)이었다. The effect of aging treatment on the microstructures and mechanical properties of 6082 aluminum alloy was investigated by differential scanning calorimetry, transmission electron microscopy and microhardness measurement. The maximum hardness(118Hv) was obtained from the specimen aged at 170℃ for 9hrs due to the formation of GP zones and metastable β' phase. In over-aged condition, decrement of hardness showed not so much. This results was attributed to the very slow transformation rate from β' to β phase. It was found that the precipitation sequency was GP zone→metastable hexagonal Mg₂Si(β') →equilibrium fcc Mg₂Si(β).

투기 선수들의 경기시 운동상해에 관한 조사 연구

김대건,윤민철 敎育硏究院 東國大學校 1998 교육문제연구 Vol.13 No.-

This study was aimed to investigate and analyze the cause of injury, symtoms, the region, the ways of prevention and others which have been resulted from the training or game of the athletes of the game event in order to be used as the basic materials in exploring the effective ways of minimizing the injury during the play The followings are the results from the above investigation and analysis conducted by practical ways. 1) Of the causes of the injury from sports, carelessness of the atheletes showed the highist rate of reply by 60 players(22.81%) while fatigue(extreme training) by 48 players(18.25%) , loosened attention by 33 players(12.5%) and show-off of the capacity of the athletes and lack of preparatory exercise by 27 players(10.27%) , a comparative high rate of reply 2) As the ways of preventions the injury, 48 players(18.25%) answered that mental concentration and burden of making record should be reduced by highest rate of reply while 45 players(17.11%) replied that the skill should be elevated, 28 players(10.65%)recovery from fatigue and 23 players(8.75%) perioddical physical examination. 3) When asked the case of the symtoms of injury exeperienced by the athletes as of now,the blister of the skin injury showed 1206 cases(35.33%) , and muscel blow of the injury of muscle and tendon was 1474 cases(33.82%), and broken bone of the bone injury was 1301 Cases(57.41%), and the Sprain of the injury of joint W3S 495 cases(30%), and neuralgia of the nerve and sense organs was 520 cases(38.15%) showing the highest rate of reply. 4) When asked on the experience of injury, Taekwondo athletes had injury at the jount of hand by 325 cases(10.98%), Judo players at the calf of the leg by 425 cases(9.75%). and at the below part of the (ace by 385 cases(13.36%). Wrestlers at the shoulder and neck by 295 cases(9.84%) showing highest rate of reply, and generally they and injury at the joint of hand by 1021 cases(7.77%),leg joint 960 cases(7.31%) and showulder 950 cases(7.23%) 5) When asked the ways of medical treatment after sot injured, 84 players(31 94%) were treated by orthopedy, and when asked the duration after injury, 99 players(37.64%) have been treated immediately and emergency treatment ways showed that 87 players(38.08%) treated for themselves, and the period of being injured has shown that they sot injured during the practice by 131(49.81%), and the time of being injured was at the afternoon training by 156 players (59.31%) , and the place of injury was at the regular place of contestgame by 184 players(69.96%) by highest rate of reply.

온톨로지 기술을 통한 의료 에이전트 시스템 활성화 고찰

김민철,이동철 濟州大學校 基礎科學硏究所 2003 基礎科學硏究 Vol.16 No.1

본 연구의 목적은 의료 웹 에이전트 시스템의 현재 연구 진행 현황을 고찰함과 동시에 이러한 에이전트 시스템의 활성화를 위한 시맨틱 웹의 온톨로지 적용을 제안하는데 있다. 특히 의료 정보 기술은 주로 환자보다는 의사의 편의성을 도모하는데 초점을 두고 발전되어 왔다. 이러한 상황을 보완하고자 하는 기술로 에이전트 시스템의 도입이 요구되어 온 것이다. 그러나 에이전트 간 또는 에이전트와 환자나 의사간 커뮤니케이션의 원활성 측면에서 여러 문제점에 봉착하게 되었다. 이러한 문제점을 해소하기 위한 방안으로 철학적 기초개념에서 발전되어온 온톨로지 기술이다. 본 연구에서는 의료서비스 특성상 환자와 의사간 정보비대칭의 현상이 어떻게 인터넷 기술에 의해 이러한 문제점을 해소할 수 있는지에 대한 방안을 모색하는 차원에서 이러한 연구가 진행된 현황을 살펴봄으로써 향후 연구 방향을 제시하고자 한다. The purpose of this study is to examine the influence of health service by information communication technology. Especially, Focusing on Internet technology, this paper reviewed what possible influence by Internet can be made to relationships between physician and patient. Finally, information inequality between producer (physician) and consumer (patient) in health care service will be decreased through the introduction of agent technology and ontology. Thus, this paper reviewed and proposed the importance of agent research by ontology introduction in the healthcare service.

백서 두개관 및 간에서 Xanthine Oxidase와 Guanine Aminohydrolase 활성에 관한 연구

민병무,김철위 대한구강생물학회 1988 International Journal of Oral Biology Vol.12 No.2

As an attempt to clarify one end of the metabolic fate of purine bases in rat calvaria and liver, the activities of xanthine oxidase and guanine aminohydrolase were assayed. The portions of calvarias containing frontal and parietal bones, and liver were separated from rats weighing 200±10 gm. Specimens were assayed for their activities of xanthine oxidase and guanine aminohydrolase in its cytosol. Specific activities of xanthine oxidase with hypoxanthine or xanthine as substrate, and guanine aminohydrolase in liver were 3.99 or 7.48, 11.40 mU/mg of protein, respectively. Xanthine oxidase and guanine aminohydrolase in calvaria, however, had significantly lower than liver. The results suggested that the salvage pathway might be active in rat calvaria, showing that purine metabolism in the tissue seemed to be regulated economically. The results also showed that catabolic fate of purine bases varied from tissue to tissue within the same species.

진성 복압성 요실금 환자에서 복강경하 방광경부현수술의 유용성: 타술식과의 비교 연구

김용태,엄민식,이석영,신관희,서정원,윤석중,이상철,김원재 충북대학교 의학연구소 2001 忠北醫大學術誌 Vol.11 No.2

연구목적: 진성 복압성 요실금의 치료법으로서 복강경을 이용한 Burch 수술을 타수술법과 비교하여 그 유용성을 알아보고자 하였다. 대상 및 방법: 진성 복압성 요실금을 주소로 본원 비뇨기과에서 수술을 시행받은 44명의 환자를 수술법별로 분류하여 수술법에 따른 성공률, 수술 시간, 입원 기간 및 합병증의 빈도를 비교 분석 하였다. 결과: 전체 환자에서 수술 성공률은 86.4% 였으며 이들 중 복강경을 이용한 Burch 수술군에서는 성공률이 100% 이었다. 복강경을 이용한 Burch 수술군은 타수술군에 비하여 입원 기간이 짧았다. 복강경을 이용한 Burch 수술군은 합병증이 매우 경미하였으며 전체 환자의 31.8%에서 단기간의 배뇨곤란을 호소하였으나 장기간의 배뇨곤란은 없었으며 슬링 수술군에서는 3례(16.7%)에서 심한 절박성 요실금을 호소하였다. 결론: 복강경을 이용한 Burch 수술은 높은 치료 성공률과 낮은 합병증의 빈도를 나타내어 진성 복압성 요실금의 치료에서 매우 우수한 수술법으로 사료된다. Purpose: We performed this study to investigate the usefulness of laparoscopic Burch colposuspension as a treatment of genuine stress incontinence compare to other anti-incontinence operation. Materials and Methods : We analyzed success rate, operation time, admission day, and complication rate of various anti-incontinence operations in 44 genuine stress incontinence patients who have been received operation in our hospital. Results : Overall success rate was 86.4%, but laparoscopic Burch coposuspension showed 100% success rate. Laparoscopic Burch colposuspension required shorter admission day compared to other anti-incontinence oparations. Complication rate was lower in laparoscopic Burch colposuspension group. Short-term voiding problems were identified in 31.8% of total patients but 3 patients(16.7%) who have received sling operation complained severe urge incontinence. Conclusion : Laparoscopic Burch colposuspension is considered as an effective surgical method for genuine stress incontinence due to high success rate and low complication rate.

한국인 알코올 의존 환자에서 알코올 대사 효소 유전자형 빈도의 남녀 차이

김성곤,김철민,이덕기,황인복,이현숙,김성연,전은숙,송영상,박제민,최병무,김명정 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.2

Objectives : There are a number of preceding epidemiological studies reporting gender differences in the genetic etiology of alcohol dependence. The author investigated gender difference in the frequencies of ADH2 and ALDH2 genoypes between the patients with alcohol dependence and normal control. Methods : The subjects were 141 alcohol dependent patients (104 males, 37 females) and 138 normal control (79 males, 59 females). The frequencies of 1/1 and 1/2+2/2 (2+ afterward) genotypes for ADH2 and ALDH2 were investigated in male and female between alcohol dependence and normal control group. DNA was extracted from WBC in peripheral venous blood and PCR-RFLP method was used out for genotyping. Results : First, the frequency of ADH2 1/1 genotype was significantly higher in alcohol dependent patients than normal control in both genders. Second, while there was no gender difference in the frequency of ADH2 1/1 genotype in normal controls, in the patient group however, the frequency was significantly higher in females than males. Third, in male subjects with alcohol dependence, the frequency of ALDH2 1/1 genotype was significantly higher than in male normal control subjects. On the other hand, in female subjects with alcohol dependence, the frequency of ALDH2 2+ genotype was significantly higher than in female normal control subjects. Conclusion : These results suggest that while the risk of alcohol dependence is predominantly affected by ALDH2 1/1 geno-type in male, the female ADH2 1/1 genotype is mainly associated with the risk of alcohol dependence. This means that there are gender differences in the genetic etiology of alcohol dependence.