췌장의 가성낭종 파열에 의한 하부 위장관 출혈 1예

장성종,김병수,부귀범,김동규,박찬국,김만우,김정용,박상헌 조선대학교 부설 의학연구소 2000 The Medical Journal of Chosun University Vol.25 No.1

Pancreatic pseudocysts usually develop as a complication of acute pancreatitis or repeated attacks of chronic pancreatitis. Pseudocysts may also develop as a result of traumatic injuries or neoplasms. An uncommon complication is massive hemorrhage inside the pancreatic pseudocyst. The exact mechanism of hemorrhage is unknown. Enzymatic digestion, pressure erosion from the cyst mass or a combination of these processes may play an important role. Gastrointestinal hemorrhage associated with a pancreatic pseudocyst can occur in 10 percent of cases. When hemorrhage occurs because of erosion into a blood vessel involved in the pseudocyst, surgery is indicated since the episodes of hemorrhage are often severe and may even be fatal. When there is colonic involvement, various complications may occur. The most dangerous one is spontaneous rupture into the colon, which requires immediate surgical treatment because of high incidence of fulminating sepsis or massive hemorrhage. We examined a sixty eight-year-old man complaining of hematochezia and dizziness, and reported that it was a case of massive lower gastrointestinal hemorrhage caused by pseudocyst of the pancreas ruptured into the colon associated with chronic pancreatitis. On operative findings, the peripancreatic fatty tissue had severe adhesions to transverse colon and tail portion of pancreas, where the pseudocyst had formed. A distal pancreatectomy, splenectomy and resection of transverse colon were performed. By microscopic examination, hemorrhagic necrosis and inflammatory change were observed in the pancreas specimen. The tail portion of pancreas had a 6×6 cm sized cystic mass and was proven to be a pseudocyst with no epithelial lining.

체육고등학교 지도자 리더십 유형에 대한 선수들의 인지도와 선호도

김진성,부기원 江原大學校附設體育科學硏究所 2002 江原大學校附設體育科學硏究所論文集 Vol.- No.25

The purpose of this study was to find a teaching medel for each sports and to develop efficient management skill of sports organization, based upon results of the analysis of leadership style and preference according to event, sex, level, school grade. This subject consisted of 455 athletic high school students. For this purpose, the survey was conducted focusing on the leadership scale for sports. The analysis of leadership style was condeucted t-test by event, sex, level and analysis of variance(ANOVA) by school grade. Based upon the results of the study, It was found that 1. The difference of leadership style recognition according to event, athletic in competitive game show a wider difference than athletic in personal game. in addition, it was found that there are a significant difference in training and instruction behavior(p.<.05), democratic behavior(p<.01), social support behavior(p<.001), positive feedback behavior(p<.001). 2.The difference of leadership style recognition according to sex, male athletic show a wider difference than female athletic. In detail, democratic behavior(p<.001), social support behavior(p<.01), positive feedback behavior(p<.05). 3.The difference of leadership style recognition according to level, superior athletic show a wider difference than inferior athletic in all leadership styles. In detail, democratic behavior(p<.05), autocratic behavior(p<.05).4. The difference of leadership style recognition according to school grade, 1st grade students show the widest difference in training and instruction behavior, 3rd grade students show the widest difference in social support behavior. but there is no significant difference. 5. The difference of leadership style preference according to event, athletics in competitive game show a preference in training and instruction behavior, autocratic behavior, social supports behavior and positive feedback behavior. Among them, there are significant differences in autocratic behavior(p<.011), social supports behavior(p<.05).6. The difference of leadership style preference according to sex, male athletic show a wider difference than female athletic in all leadership styles. In detail, there are significant differences in training and instruction behavior(p<.05), autocratic behavior(p<.01), social supports behavior(p<.001), positive feedback behavior(p<.001). 7. The difference of leadership style preference according to level, superior athletic show a wider difference than inferior athletic in all leadership styles. In detail, there are significant difference in democratic behavior(p<.01), positive feedback behavior(p<.05). 8. The difference of leadership style preference according to school grade, 1st grade students show the widest difference in training and instruction behavior, democratic behavior and social supports behavior. 3rd grade students show the widest difference in autocratic behavior and positive feedback behavior. but there is no significant difference. The leadership style recognized by all subjects are training and instruction behavior the first, positive feedback behavior the second, democratic behavior the third and autocratic behavior the last. The leadership styles preferred by all subjects are training and instruction behavior the first, democratic behavior the second, and social supports behavior the third and autocratic behavior the last.

급성 지주막하 출혈에 동반된 관상동맥 연축에 의한 심근경색증 1예

부귀범,박근호,양종태,이동민,장성종,김건영,장경식 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.1

In many cases, acute cerebrovascular disease is accompanied by abnormal electocardiograms. Also, though rather uncommon, acute myocardial infraction is also seen. The mechanism of its occurance is uncertain but it is thought to be related to coronary artery spasms, an abnormal autonomic nervous system, and a catecholamine increase. A female patient of 34 years of age came to the hospital because of sudden headache accompanied by substernal chest pain. A subarachnoid hemorrhage due to a cerebral aneurysm rupture had occured, and there was ST segment elevation in lead II, III, and aVF of the electrocardiogram. A cardiac enzyme test, an echocardiography, and a coronary angiography were performed, and she was diagnosed to have acute myocardial infarction due to coronary artery spasm. Clipping of the aneurysm was performed. With the use of nitrate and an angiotension converting enzyme inhibitor, the condition of the patient improved.

직접극배치 PID 자기동조 알고리즘을 이용한 제어기 설계에 관한 연구

김성대,박선국,최부귀 동아대학교 공과대학 부설 한국자원개발연구소 1990 硏究報告 Vol.14 No.2

One of the advantage of the well-known PID controller is that it is a sufficients flexible controller for many applications. But, when the flant paramaters and distrubance are unknown or change with time, it is desirable to make automatic tuning of PID controller in order to achive an acceptable level of performance of the control system. In this paper, classical controller parameters are estimated by the recursive least square(RLS) identification algorithm, the pole placement method and Diopantine euqation. A series of simulations in which stationary stage and state with distrubance are subjected to a patten of system parameter changes is presented to show some of the features of the proposed control algorithm.

항공기용 가스터어빈 엔진의 재료선정을 위한 DATA BASE 개발

金學奉,林慶鎬,金光培,夫俊洪,柳常新 한국항공대학교 1991 論文集 Vol.29 No.-

본 논문의 목적은 항공기용 가스터어빈 엔진의 재료선정을 위한 데이타 베이스를 구축하는 것이다. 한 엔진설계자가 어떤 엔진요소에 사용 할 재료를 선택한다는 것은 매우 어려운 작업이다. 따라서 수 많은 재료에 대한 정보를 관리 할 수 있는 데이타 베이스가 절실히 요구되고 있으나, 국내에서는 아직 이 방면의 기초연구가 이루어져 있지 않은 실정이다. 온도, 압력, 회전수등 각 부분에서의 작동조건은 다른분야에 의해 제공될 것이다. 본 연구에서는 재료공학적 관점에서 재료의 대표적성질로서 고온강도, 내식성, 내산화성, 항복강도, 열팽창계수, 융점등을 고려해서 후보재료를 선정할 수 있도록 하였다. 이외에도 성형성이나 제조단가등도 고려해야할 변수가 된다. 본연구의 결과 사용자의 편의를 고려한 전산프로그램이 개발되었으며, 이를 이용하여 새로운 재료정보의 입력, 요구 재료선정 및 선정결과의 출력등이 가능하다. 끝으로, 선정된재료에 대한 재료공학적 검토도 실시하였다. The purpose of this study is to develop a data base for material selection of gas turbine engines. Since it is very diffcult task for a design engineer to select materials of adequate properties for specific engine components, a good data base is strongly desired to manage informations on various kinds of materials. However, no basic research is reported in this area so far in our country. The operating conditions such as temperature, pressure, rpm of spools are assumed to be provided by other mechanical studies. Creep rupture strength, corrosion resistance, yield strength, thermal expansion, melting point, etc., are considered as typical properties in this study to search a group of candidate materials. Formability, manufacturing or purchase cost can also be important variables to be considered. As a result of this study, a user-fiendly computer program has been developed for input of new material information, interactive material selection, and output of selection results. Finally, discussion is presented from the viewpoint of materials engineering.

임파워먼트의 실현 방법에 관한 연구

김상부,황구주 國立 昌原大學校 産業技術硏究所 1998 産技硏論文集 Vol.12 No.-

The implementation process of empowerment, which was first introduced to western companies as a business strategy, is considered. When implementing empowerment in a company, corporate culture and the organizational environment should be taken into account. Differences between western and Korean corporate cultures are studied and negative aspects of implementing empowerment are presented. Furthermore, the empowerment process for a Korean electronic company is developed.

척수손상·비손상인의 신체부위별 신체구성 및 골밀도 비교

김성수,황부근,김태수,이충일,양정수,이동희 한국특수체육학회 2003 한국특수체육학회지 Vol.11 No.1

This study was designed to compare segmental body composition and bone mineral density in spinal cord-injured(SCIS; n=9, SCIA; n=9) and non-injured control(AB; n=9) subjects. Dual-energy X-ray absorptiometry(DEXA) was used to measure %body fat, body fat mass, lean body mass, bone mineral contents, and bone mineral density in total and various body regions(arms, legs, trunk). The present results showed that body fat mass and %body fat were significantly higher and lean body mass was significantly lower in the SCIS group compared to AB group, while there was no difference between the SCIA and AB group in those of parameters. In BMC, there was no difference among groups and in BMD, SCI group was significantly lower that AB group, but there was no difference between SCIA group and AB group. Based on these results, in can be suggested that long-term regular exercise can reduce the negative changes in body composition, bone mineral density by spinal cord injury.

최대 암에르고미터 운동 시 경험 유·무에 따른 척수 장애인의 환기역치 비교

김태수,김성수,윤성진,황부근,이동희,이강우 한국특수체육학회 2004 한국특수체육학회지 Vol.12 No.3

The purpose of this study was to determine the effect of state for training at the VT using other relative physical factors as like a VT-Sec, VT-VO2peak, VT/VO2peak%, VO2peak, VT-HRpeak, VT/HRpeak%, HRpeak, with individuals with spinal cord injuries. The participants were composed of 7 spinal cord injured wheelchair basketball athletes who are involved with regular activity, 5 spinal cord injured sedentaries who are not involved any regular activity. The statistical procedures used to the analysis were unpaired T-test. The results were as follows; First, the significant differences in VT-Sec, VO2peak were observed between 2 groups. Second, the validity of 44-72VT/V O2peak% and 56.78VT/HRpeak% is suggested as an alternative exercise intensity by individuals with all spinal cord injuries.

위장관 출혈을 일으킨 공장의 형활근종 1예

김병수,장성종,부귀범,조운택,박찬국,김만우,변주남,김정용,전호종 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.1

Small bowel leiomyoma is a rare tumor which may occur wherever smooth muscle is present. The small bowel is the most common site and it makes up 20~30% of all benign small intestinal neoplasms. A spectrum of symptoms are common ranging from nausea, vomiting, abdominal pain, to massive intestinal bleeding. Bleeding is the most common symptom and is usually gross and recurrent. Occasionally it may be life threatening. But, the most serious problem is both the absence of specific clinical symptoms, and the difficulties shown in radiological diagnostics of the small bowel. If conventional diagnostic methods fail to reveal any positive findings for gastrointestinal bleeding, the diagnosis of intestinal leiomyoma should be suspected and an SMA angiography shoud be performed. The angiographic criteria of small bowel leiomyoma is very characteristic. We present a case of leiomyoma with considerable and prolonged gastrointestinal bleeding, which was diagnosed by angiography. A 61-year old woman was admitted with a history of melena over the last 10 days. An SMA angiography showed a hypervascular mass with a diameter of 3×3cm. A segmental resection was performed under the impression of the gastrointestinal bleeding due to leiomyoma of the small bowel. Microscopic examination of the lesion shows interlacing or whorl bundles of spindle shaped ces and no mitosis.

풍력 발전 시스템의 회전익 토오크 모델링

부성환,임종환,허종철,김건훈 濟州大學校 産業技術硏究所 1999 산업기술연구소논문집 Vol.10 No.2