유한요소법을 이용한 용접부의 열전달 및 잔류응력 해석에 관한 연구

김일수,김인권,문채주,정영재,안영호 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.5

This paper represents to develop a computer software system which is capable to analyze the phase transformation of high strength steel(BV-AH32) and to predict heat transfer and welding residual stress due to phase transformation during Gas Metal Arc(GMA) welding. The developed model was considered temperature dependent properties such as young's modules, coefficient of thermal expansion and yield stress as well as the double ellipsoidal heat distribution by the moving arc. From the results, it was found that the longitudinal and transverse residual stresses calculated by the coupled analysis of heat transfer, residual stress and phase transformation showed good agreement with the experimental data. In addition, the temperature distribution as well as longitudinal and transverse residual stresses of weldment by the 1-pass and 2-pass of welding were also determined.

현훈 환자 Neuron Specific Enolase의 임상적 의의

김원주,김선곤,유철형,김원찬,김용덕,최영철,이명식 대한신경과학회 1998 대한신경과학회지 Vol.16 No.4

유방통을 호소하는 한국 여성에서 Gamma Linolenic acid의 임상적인 효과

정재헌,김권천,조현진,민영돈,김성환,김정용,장정환 조선대학교 부설 의학연구소 2000 The Medical Journal of Chosun University Vol.25 No.1

Background and Objectives : Recently, the incidence of breast cancer is gradually increasing in korea. Many patients visit the hospital with a fear of breast cancer, if she had the pain in her breast. But Breast pain is not a cardinal sign of breast cancer. Only 7% of patient in breast cancer has breast pain. Materials and Method : To know the clinical effects of gamma-linolenic acid(GLA), we analyzed the medical records of 55 cases with breast pain, who visited the outpatient clinic of Chosun university hospital, between July of 1999 to December of 1999. Of the 55cases of breast pain, we analyzed 26 cases of patient with breast pain who was treated with GLA for 2 month and we excluded patients of breast pain who had breast mass or were treated with other drug. Results : 2 Patients we are dropped out because nausea and vomiting were developed, 4 Patient with breast pain were treated with GLA for 1 month, and relieved completely from mastalgia and 8 patients with breast pain were treated with GLA for 2 months and breast pain was relieved completelys. 4 patient had treatment for 2 months, were relieved slightly. But 8 patients with breast pain didn't reveal the relief of symptom after the intake of GLA. Conclusion : We conclude that GLA could be considered a first line drug in patients with mastalgia.

급성 하벽 심근경색증에서 경색관련혈관의 예측을 위한 초기 심전도의 유용성

차광수,김영대,김무현,김형권,김종성 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.7

결장직장암 환자의 임상적 고찰 : 조선대학교 부속병원의 10년 간의 결과

나은종,문성표,장정환,김권천,민영돈,김성환,조현진,김정용,김경종 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.2

Background and Objectives: The colorectal cancer rates 4th in the total cancer prevalence in Korea. The clinical patient demographics were considered with the incidence rate of the colon and rectal cancer. The clinicopathological factors were analyzed for the 5 year survival rate. Materials Methods: Of the 282 patients who were operated from Jan. 1, 1992 to Dec. 31, 2001 and diagnosed by pathological biopsy as colo-rectal cancer, 234 patients were followed up. The age, sex, location of the cancer, TNM stage, operation method, histopathological classification, metastatic region, complications after operation and the survival rate were investigated. Results: Of the 234 patients, male and female consisted of 120 cases (51.3%) and 114 cases (46.7%), with an average age of 61.6 years. The average follow up period was 52.3 months and the peri operative mortality was 5.6%. The site of the cancer was most frequent at the rectum with 127 cases (54.3%). The patients were classified according to the TNM stages with 38 cases of stage 1 (16.2%), 98 cases of II (41.9%), 72 cases of III (30.8%) and 26 cases of IV (11.1%). The 5 year survival rate in the age group older than 50 was 63.3 % and 73.5% in the group younger than 50. In regard to the operation type, the 5 year survival rate was 65.4% for elective operation and 65.8% for emergency operation. The 5 year survival rate for well differentiated, moderately differentiated, poorly differentiated cancer, and mucinous adenocarcinoma was 73.7%, 60.2%, 58.3%, and 92.6%, respectively. The 5 year survival rate of each of the TNM stage is 81.1%, 74.8%, 57.0%, and 11.5% for Classes I, II, III, and IV, respectively. Conclusion: The clinical factors were analyzed for the 5 year survival rate with no statistical significance for the age, sex, and location of the cancer. The TNM stage and histopathological differentiation were statistically significant. The colon cancer showed better prognosis compared to the rectal cancer.

뇌기능 장애 환자에서 뇌 SPECT의 유용성

김권영,신수범 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3

Objective: To evaluate usefulness of the brain SPECT in brain dysfunction patients who showed low Mini-MentaI State Examination(MMSE) score. Method: Eighty four patients who were visited to a rehabilitation hospital for their brain dysfunction were retropectively studied. We investigated percent of positive finding in brain SPECT, brain CT, MRI, P-300 studies, and correlation of MMSE scores, brain SPECT, P-300 studies, and correlation of brain SPECT, brain CT and MRI, P-300 studies. Resutts: Percent of positive finding in brain SPECT was high than brain CT, MRI, P-300 studies. MMSE scores were positive correlation with brain SPECT, but no correlation with P-300 study(P>0.05). Brain SPECT were significant correlation with brain CT (P<0.05), but no correlation with brain MRI and P-300 studies (P>0.05). P-300 study was no correlation with brain CT, MRI (P>0.05). Conclusion: We concluded that brain SPECT is useful for reflection of brain dysfunction.

생산성 향상을 위한 생산 관리 시스템

김영진,오삼권,임기욱 호서대학교 반도체제조장비국산화연구센터 2001 반도체장비학술심포지움 Vol.2001 No.-

기업 내 관련 업무 및 조직의 유기적 연결을 통한 원활한 정보의 흐름은 생산성의 중대에 많은 영향을 주며 기업의 경쟁력과도 밀접한 관계가 있다.이러한 이유로 연구개발에서부터 설계, 제조, 판매에 이르기까지 컴퓨터와 통신기술을 활용하여 기업의 업무 흐름을 통합적으로 관리할 수 있는 컴퓨팅 시스템이 필요하다.그러나 기업 내 업무의 성격 및 규모, 어플리케이션 튜닝 등의 충분한 검토가 수행되지 않은 컴퓨팅 시스템은 개발비용의 부담과 더불어 시스템의 성능을 오히려 저하시킬 수 있다.본 논문은 생산 제조 업체의 업무의 성격과 환경에 적합하고 업무의 흐름을 유기적으로 통합 관리할 수 있는 클라이언트/서버 기반 생산 관리 시스템을 설계 및 구현하였다.

일반 대학생의 전방 보행 훈련 후 최대 심박수 및 산소 소모량의 변화

김권영,이경일,송지원 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3

The purpose of this study was to determine the maximal cardiopulmonary response of healthy male college students in treadmill forward walking Subjects were composed of fifteen healthy male college students. Maximal heart rate and VO₂max Were determined for each subjects by administering a Bruce treadmill exercise test of the before and after forward walking training for eight weeks, Wilcoxon signed rank test was used to evaluate the changes of the forward walk training, The study showed that maximal heart rate were 170.4 beat/min in pre-training, and 177.0 beats/min in post-training respectively resting heart rate was 71.7 beat/min in pretraining and 68.3beat in post. The maximal oxygen consumption were 2283.3㎖/min, 45.6% in pre-training, and 2736.9㎖/min, 57.3% in post-training. There were significant differences (P<0.05) in maximal heart rate, heart rate ratio of maximal heart rate(% HR), oxygen consumption and oxygen consumption ratio of maximal oxygen consumption(% VO₂max) between the pre and post-training, The total lipid and HDL cholesterol, Triglyceride level were 633.3㎎/㎗, 40.8㎎/㎗, 99.3㎎/㎗ in pre-training, and 510.1㎎/㎗, 57.8㎎/㎗, 85.6㎎/㎗ in post-training and there were significant increased of HDL cholesterol in post-training. We concluded that 7km/hr forward walk training for eight weeks was more effective exercise program to promote health in the college male students.

심부전이 동반된 갑상선기능항진증의 전신마취 1례

김태환,원유흥,김웅,권영무 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

갑상선기능항진증 환자는 선택수술시 마취전에 장기적으로 항갑상선 약물과 베타-수용체 차단제를 사용하여 정상갑상선기능으로 만들어, 적어도 맥박수가 분당 85회이하로 되었을 때 마취를 하여야한다. 정상갑상선기능으로 만들지 않은 환자를 수술을 하였을 때, 수술중이나 후에 갑상선 호르몬이 과량으로 분비하여 합병증을 유발할 수 있다. 그러나 응급수술시에는 수술을 하지 않았을 때의 생명의 위험도와 마취와 수술을 하였을 때의 위험도를 비교하여 결정하여야 한다. 저자들은 심부전을 동반한 조절되지 않은 갑상선기능항진증을 가진 38세의 여자환자를 응급으로 전신 마취하여 성공적으로 난관난소적출술을 시행한 경우를 보고하는 바이다. Elective surgery should never be considered until hyperthyroid patients have been rendered euthyroid and controlled by antithyroid drugs and beta-adrenergic blockades, as evidenced by resting bean rates less than 85 beets/min. Patients who cannot be rendered euthyroid before surgery may develop adverse responses related to excessive release of thyroid honnones during the perioperative period. But in the emergency case, it must be considered the severity between life and risk We described the case of the 38-year-old woman with uncontrolled hyperthyroidism accompanying the congestive heart failure, who was successfully carried out a salpingoophorectomy under general anesthesia.

검도본(劍道本)의 변천에 따른 의미

김영학,정동권,허건식 龍仁大學校 1998 용인대학교 논문집 Vol.16 No.-

The purposc of this study is to examine the Bon(本) of Kumdo, from its establishment to revisions and amendments, and to identify the practical significance and the technical stucture of the Bon. The Bon of Kumdo is largely divided into the Bon of Daedo(大刀; long sword) and the Bon of Sodo(小刀; short sword), the former comprising seven kinds, the later three kinds. The current type of Bon that is used in different competitions and tests is the Japanese style, which was completes in 1933. This Bon synthesized the complex and various Kumdo techniques in a condensed form, which are, from the perspective of modern Kumdo, entirely the techniques of the first move of rare, the most simplified attacking techniques: or, from the perpective of attacker, of which the main body are made up of rare movements. Among these, only the seven Bons of the Daedo are equal first moves, and only the three Bons of the Sodo are in the form of the non-deadly sword, not the killing kind. Such Bon of Kumdo are selective kinetic expressions of the purpose, the method, the soguence, formalized through the experiences of numerous practicxians and accumulation of researches. The Bon of Kumdo must reflect and synthesize the most basic and desired techniques of all and serve as the purification of all Kumdo practices, including manners, facing posture, attack and defense, distance, cheering, and concluding attitudo. As specified above, the Bon must serve as a means of rejecting self=aggrandizement and superfluous exaggeration, which result form negligence of the martial discipline. The Kum(劍) as the menans of martial art can always turn to a performative object. Accordingly, it is necessary to examine the relation between the Bon of Kumdo and the Bon of modem Kumdo formalized as a competitive came. The Bon of Kumdo is the condensed form of all Jinkum(眞劍; real-sword) techniques of the past, rather than a form necessitated for Jukdo(竹刀; Bamboo-sword). In other words, the charactcristics of the Jinkum and the Jukdo are fundamentally different from each other. It is thus necessary to develop a new form that suits the Jukdo usage on top of the current Bon.