심첨부 비후 심근증에서 심근 내 미세 관상동맥의 혈류 예비력 평가 : 경흉부 도플러 심초음파를 이용한 연구 Study Using Transthoracic Doppler Echocardiography

윤호중,박철수,신재원,임상현,조은주,정해억,전희경,오용석,정욱성,김재형,최규보,홍순조 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.3

現行高校化學敎育의 問題点과 改善方案에 關한 硏究

朴成祿,韓麟傳,尹世重 공주대학교 사범대학 과학교육연구소 1973 과학교육연구 Vol.5 No.1

This paper was dealed with current status of chemistry education presented by fiftythree high school teachers with questions(1971). The questions are analyzed, summerized, and some comments are postscripted. There were many difficulties in teaching chemistry; heavy teaching load, extra official load, poor budgget, shortage of facilitsies and equipments, unreasonable use of appointed budgget in management, and too heavy burden for entrance examination which is apt to demand memory rather than understanding the natural principle and law. As a plan of improvement of current science education, the matters of policy and the matters of reunderstanding of science education on the bases of philosophy are proposed.

검사시간의 경과에 따른 컴퓨터 신경행동검사 수행기능의 변화양상

정성태,전만중,사공준 大韓産業醫學會 2007 대한직업환경의학회지 Vol.19 No.4

목적: 컴퓨터 신경행동검사에서 검사시간의 경과에 따른 측정치들의 타당도 변화양상과 타당도에 영향을 미치는 요인들을 평가하고 수용할 만한 타당도가 나타나는 최소한의 검사시간을 제시하여 컴퓨터 선경행동검사의 결과 해석의 정확성을 높이고 검사시간 설정의 기준으로 활용 하고자 수행되었다. 방법: 자동차공장 근로자 중 혼합 유기용제에 만성적으로 노출되는 도장공 118명과 연령을 짝지은 대조군 113명으로 총 231명을 대상으로 하였다. 대상자 전원은 고등학교졸업의 학력을 가진 남자 근로자였으며,연령,작업부서,근무년수,주야간 교대작업 여부,음주 및 흡연 습관을 자기기입식 설문지를 통하여 조사하고 SPES를 이용한 컴퓨터 신경행동검사를 시행하였다. 신경행동검사는 연습수행을 포함하여 단순반응시간 6분,부호숫자짝짓기 10회,손가락두드리기 5회를 수행하였다. 단순반응시간은 1분 단위로, 부호숫자짝짓기와 손가락두드리기는 수행단위(session)마다의 평균반응시간,표준편차 및 두드린 횟수에 대한 검사시간의 경과에 따른 변화양상을 관찰하고 t 통계량과 반복측정분산분석을 이용하여 타당도의 변화양상을 관찰하였다. 결과: 단순반응시간은 도장공과 대조군 모두에서 검사에 대한 미숙함은 적은 반면 시도가 반복됨에 따라 학습 효과에 비해 지루함 혹은 흥미의 감소 등의 영향이 더 큰 것으로 나타났다. 도장공과 대조군의 평균반응시간 차이의 타당도는 연습수행 후 1분의 검사시간에서 높았다. 부호숫자짝짓기의 초기에는 검사에 대한 미숙함 등이 많이 개입되며,시도의 횟수가 증가함에 따라 학습효과의 개입이 증가하였다. 5∼7번째 시도의 평균반응시간에 대한 t 동계량이 가장 컸다 손가락두드리기의 경우 우수는 학습 효과에 의해 시도가 반복될수록 두드린 횟수가 증가하는 경향이 있었고 열수는 피로에 의해 두드린 횟수가 점차 감소하는 경향이 있었다. 결론: 따라서 단순반응시간은 연습수행 1회 후 1분(1회째)의 검사를 분석에 이용하고,부호숫자짝짓기는 검사 시작 후 4번의 시도들을 연습수행으로 하며 ,이후 연속적인 3번의 시도에 대한 평균반응시간을 대표값으로 이용하고,손가락두드리기는 연습수행 1회 후 1,2번째 시도의 평균 두드린 횟수를 분석에 이용하면 타당도를 높이고 시간을 절약할 수 있을 것이다. Objective: A cross-sectional study was performed to assess changes in computerized neurobehavioral performance across multiple test sessions for developing a valid performance level and reducing test time. Methods: The study was conducted on 118 male car painters exposed to low-dose, mixed organic solvents. The study controls were 113 unexposed reference workers matched for age and educational year from different sections of the same factory. Each worker completed a medical and occupational exam and questionnaire. Three tests of the Swedish Performance Evaluation System (5 minutes of Simple Reaction Time, 9 sessions of Symbol Digit, and 4 sessions of Finger Tapping Speed) were administered to each group. Results: The mean age, mean duration of employment, and mean years of education were 33 years, 6.7 years, and 12 years in both groups, respectively. The mean reaction times of the Simple Reaction Time increased with the lapse of time. The known group difference between the exposed and control groups was larger for the first minute than for the successive 3 minutes. Both groups showed improved performance across the first to the seventh sessions on Symbol Digit. Following the seventh session, the performance levels of Symbol Digit had worsened. The t statistic of the two groups was the largest when the two mean reaction times were calculated from the sessions of the fifth to the seventh, In the dominant and non-dominant hands, the number of taps increased and decreased, respectively, across the sessions on Finger Tapping Speed. The known group difference was the largest when comparing the performances from the first to the second sessions. Conclusions: For valid interpretation and timesaving in computerized neurobehavioral tests, the following is recommended: one practice and one test session for Simple Reaction Time, four practice and three test sessions for Symbol Digit, and one practice and two test sessions for Finger Tapping Speed.

온도와 습도가 잔향시간에 미치는 영향

이성직,윤화중,전관수 충남대학교 1990 忠南科學硏究誌 Vol.17 No.2

The decay rate of sound in large reverberation room depends on air humidity and temperature. This phenomenon is one of the important part to reverberation time of architectural acoustics. In this paper, the measurement of the reverberation time was carried out according to temperature and humidity in order to obtain the effect of atmospheric sound absorption. T_60 = ((const)·V)/(-S ln(1-α-)+4mV) corrected as T_60 = ((const)·V)/(-S ln(1-α-)+4.41mV) at humidity 70~80% T_60 = ((const)·V)/(-S ln(1-α-)+3.20mV) at humidity 80~90%

자원봉사자들의 탈북자 지원 경험 분석 : 설문결과를 중심으로

강성록,김형중,윤덕룡,전우택,민성길 연세대학교 통일연구원 2001 통일연구 Vol.5 No.1

Objectives: Since 1994, the number of North Korean defectors, escaping North Korea and entering South Korea, has in creased rapidly.The Government has provided most of te support for the defectors' adaptation to their new society.But as the number of defectors has increased, and the support needs have become more various, the support of volunteers from non-governmental organization(NGO) has become very important.To raise the level of the success and effectiveness of the support from the volunteers, their experiences were surveyed and analyzed. Methods: This study surveyed 83 volunteers of 7 NGOs involved in helping North Korean defectors' adaptation to South Korean society-48 men and 34 women. Results: In their relationships with defectors, women volunteers have more difficulties in their first 3 months.However volunteers in their 50s and 60s tend to have more stable and better relationships with defectors than younger volunteers.Many volunteers statedexperiences of human difficulties with defectors, for example, mistrust and anxiety in human relationship (n=34, 41.0%), psychological maladjustment(n=19, 22.9%), different ways of thinking and culture(n=17, 20.5%), economic difficulties(n=10, 12.0%), and lack of independence spirit(n=6, 7.2%).The volunteers said they have feelings of goddwill toward defectors when defectors showed warm heart(n=30, 36.1%), politeness(n=30, 36.1%), positive and active character (n=24, 28.9%), strong will(n=17, 20.5%), and plainness (n=14, 16.0%).The volunteers stated an absence of goodwill feelings to defectors when defectors showed uncompromising and aggressive attitudes (n=29, 34.9%), lack of independent will (n=28, 33.7%), selfishness (n=18, 21.7%), and avoidance of making human relationship (n=16, 19.3%).as for adequate training before commencing activity, 5 volunteers(6.0%) said they had received enough education before their activity, 31(37.3%) relatively enough, 38 (45.8%) relatively not enough, and 9 (10.8%) absolutely not enough education.If they were the owners of al company, 27 volunteers (51.9%) sanid they would want to thire defectors even if the defectors did not have the required ability. Conclusion: These results showed that NGO's volunteers have a friendlier attitude to defectors than policemen n charge and public officials, which is their strong point.Women volunteers experience more difficulties in their early relationships with defectors, suggesting the need for a specific pre-education program for women volunteers.Furthermore, NGOs would benefit from an increase in the number of volunteers in their 50's and 60's.Both volunteers and defectors need to understand each othe to a deeprer extent and the characteristics to which South Korean volunteers feel goodwill need to be used n their education.

척수압박으로 발현된 급성 골수성 백혈병에 동반된 과립구성 육종 1 례

윤상준,김영곤,김희종,박유환,정춘해,김양수,김태균,박영진,전호종 조선대학교 부설 의학연구소 2000 The Medical Journal of Chosun University Vol.25 No.1

저자들은 척수압박으로 하지마비를 보인 환자에서 수술 후에 급성 백혈병에 동반된 과립구성 육종으로 진단된 환자 1례를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Granulocytic sarcoma(GS) is an uncommon tumor composed of immature cells of the granulocytic series. Most case of GS occur in the course of acute leukemia and the blast crisis of chronic leukemia, Rarely, however, it may present before leukemia becomes clinically apparent. It may also occur in patients with myeloproliferative disoders. GS has been reported that it occurs in 3% to 9% of patients with acute myelogenous leukemia(AML) and the incidence of GS is reported to be higher in patients with t(8;21). GS occurs relatively commonly in africa and has been reported to affect 10-25% of black children presenting with AML. This is very rare case of granulocytic sarcoma with AML(FAB M5) presented with spinal cord compression which was supported by decompression laminectomy.

한국 복싱의 退潮에 관한 小考

김원기,전만중,박상호 한국체육사학회 2003 체육사학회지 Vol.12 No.-

This paper started from a necessity to reconsider boxing sports, the only sports game that brought about our patriotism during the time when most of us were poor, and flied away out stress and anger, also, that made us dream and have a hope. The boxing game attracted people's interest at that time, meeting the spirit of hungry. However, boxing sports became an unpopular game nobody pays attention to. The reason was that all boxing games mobilized many boxing players and enthusiastic audience in the past, but as GNP elevated greatly, there are few hungry persons, the spirit of hungry was subdued, the number of players drastically decreased, demand of audience reduced, people don't enjoy watching boxing games, there are few spectators in boxing gyms, no sponsors support relay broadcasting for boxing games. Furthermore, results have been very poor in various amateur international boxing match, all broadcasting stations became to dislike relay broadcasting of international matches. A certain broadcasting station regularly sent out pro-boxing game programs every weekend for 45 years as it took a full charge of pro-boxing game, but frequency of relay broadcasting reduced now, and the reason that the popularity rating is lower than other popular sports games made the station avoid relay broadcasting, These results mean that reducing number of TV relay broadcasting showing the highest PR effect made boxing games inactive. Summing up the study, the reasons that boxing games have declined popular sports games' appearing, high-leveled foreign players' watching TV games, the law of diminishing marginal utility, and democratized society. As a result, demand of boxing games rapidly reduced. However, boxing games in Korea must remember Kim, Ki-su's acquisition of championship on July the 25th, 1966, WBA championships obtained by 16 players including Hong, Su-wan, Yu, Myung-woo, Park, Jong-pal, Mun, Seong-kil, and 11 WBC championships acquired by Yeon, Dong-kyun, Jang, Jeong-gu. They surely won an international fame flying the taegeuk flag all over the world. Also, in spite of short history of woman pro-boxing, Lee, In-young acquired a world championship, therefore, Korea still has a hope to meet another new jumping moment.

복합유기용제에 폭로된 근로자들에 대한 신경행동학적 기능의 평가

김창윤,전만중,정종학,성낙정,김상규,사공준,주 리 영남대학교 의과대학 1997 Yeungnam University Journal of Medicine Vol.14 No.2

복합유기용제를 취급하는 근로자들을 대상으로 유기용제의 폭로가 신경행동기능에 미치는 영향을 평가하기 위하여 대구지역의 중소규모 사업장에서 톨루엔, 크실렌, 메틸에틸케톤 및 신나에 만성적으로 폭로되는 유기용제 폭로군 48명과 폭로군과 같은 사업장에 근무하면서 유기용제에 폭로되지 않은 대조군 50명을 대상으로 1996년 8월에서 10월까지 연령, 교육수준, 음주, 흡연량 및 직업관련 변수들을 조사하고 Neurobehavioral Core Test Battery의 검사항목 중 Benton visual retention검사, 숫자부호 짝짓기, 숫자 외우기, 목적점찍기를 시행하였다. Benton visual retention검사는 폭로군이 7.9개, 대조군이 8.2개로 두군에서 유의한 차이가 없었으며, 숫자부호 짝짓기의 경우 폭로군이 55.6개, 대조군이 62.1개로서 폭로군이 유의하게 적었다(p<0.01). 숫자 외우기의 총 점수와 거꾸로 따라외우기의 점수가 폭로군에서 유의하게 적었으며(p<0.05, p<0.01) 목적점찍기의 바르게 찍은 점의 개수가 폭로군에서 유의하게 적었다(p<0.05).연령의 변화에 따른 신경행동기능의 일관성있는 변화는 없었으나 Benton visual retention검사의 경우 젊은 연령군이 고연령군에 비해 대조군에서 유의하게 높은 성적을 보였다(p<0.05). 부호숫자짝짓기의 경우 폭로군과 대조군 모두에서 학력이 높을수록 검사성적이 유의하게 높은 경향을 보였다(p<0.05). 숫자부호짝짓기에서 섭취하는 알콜의 량이 많을수록 폭로군의 부호숫자짝짓기 검사성적이 감소하는 경향을 보였다(p<0.05). 목적점찍기의 경우 폭로군에서 흡연량이 증가할수록 성적이 감소하는 경향을 보였다(p<0.05). 신경행동학적 검사성적을 종속변수로 하고 유기용제의 폭로유무, 나이, 학력수준, 알콜 및 흡연량을 독립변수로 한 다중회귀분석에서 Benton visual relention검사는 연령이 증가할수록 그 성적이 감소하는 경향을 보였으며(p<0.05), 숫자부호짝짓기는 학력이 높을수록 성적이 증가하는 것으로 나타났다(p<0.01). 숫자외우기에서는 유기용제의 폭로가 유의한 변수로 채택되었다(p<0.01). 목적점찍기의 총점수는 흡연량과 교육수준이(p<0.01), 바르게 찍은 개수는 흡연량과 유기용제의 폭로가 유의한 변수로 채택되었다(p<0.05). 유기용제의 폭로에 의해 지각반응(perception response)과 단기기억능력(short-term memory)이 민감하게 영향을 받는 것으로 평가되었으며, 특히 허용농도이하에서도 장기적으로 폭로되는 경우 폭로자의 신경행동기능에 변화를 초래할 수 있음을 확인할 수 있었다. NCTB에 의한 신경행동기능의 평가는 신경독성물질의 폭로이외에도 연령과 교육수준에 영향을 받으며 특히 지속적 운동능력의 경우 흡연에도 다소 영향을 받을 가능성을 제시하였다. A cross-sectional study was performed to evaluate the effects of chronic exposure to low-dose solvent on neurobehavioral performance of 48 male workers exposed to organic solvents. A control group of 50 workers was selected from same factories. Each worker completed a medical and occupational questionnaire and four tests of Neurobehavioral Core Test Bateery. These included Benton visual retention test, digit symbol, digit span,and pursuit aiming. Comparison of mean performance showed a significantly poorer performance on digit symbol, digit span, and pursuit aiming. In univariate analysis, age contributed to poor performance on Benton visual retention test and educational level was found to reduce the performance on symbol digit in both groups. Amount of alcohol intake was found to reduce the perfomance on digit symbol and smoking appeared to slow pursuit aiming in the exposure group. In multiple regression analysis, controlling for age, educational level, alcohol, and smoking, solvent exposure was found to be associated with performance of digit span, and number of correct dot of pursuit aiming. Age on Benton visual retention, educational level on digit symbol, and smoking on pursuit aiming were found to be a siginificant factors on each test items. This study suggest that short-term memory, and perception can be affected easily by chronic exposure of organic solvents which air concentration levels were under the Threshold Limit Value.

차량의 방송 수신 전파 환경 분석에 관한 연구

김의태,김성철,이중근,양승완,전인학 漢陽大學校 工學技術硏究所 2001 工學技術論文集 Vol.10 No.-

본 논문에서는 이동 중인 차량의 수신 성능에 영향을 주는 전파 환경 측정을 위한 측정 셋업을 구성하고, 측정 결과 분석을 통한 수신 이상 현상의 원인을 밝혔다. 이를 위해 필요한 측정 파라메터의 정량적 설정과 측정 및 분석 방법을 제시하였다. In this paper we constitute the measurement setup of electromagnetic environment which has an effect on the radio receiver of vehicles an analyzed causes. This paper proposes various measurement and analysis methods for uncovering noise mechanism of vehicle receiver system.

일렬 자가조혈모세포이식을 받은 다발성 골수종 환자에서 발생한 뇌 톡소포자충증 1례

김계형,송경호,전재현,박완범,박상원,김홍빈,김남중,김인호,오명돈 대한감염학회 2010 감염과 화학요법 Vol.42 No.3

Toxoplasmosis is a rare but fatal complication in hematopoietic stem cell transplant recipients, usually associated with allogeneic hematopoietic stem cell transplantation (HSCT). We report a case of cerebral toxoplasmosis in a patient with multiple myeloma, following tandem autologous stem cell transplantation. A 55-year-old Korean male presented with weakness in both legs that had progressed to both arms. A magnetic resonance imaging scan of the brain revealed multiple, variablesized ring-enhancing lesions with surrounding edema in the cerebral hemispheres and brain stem. Stereotactic biopsy revealed bradyzoites of Toxoplasma gondii in the brain tissue. The patient received trimethoprim-sulfamethoxazole, followed by pyrimethamine and sulfadiazine, accompanying treatment for progressive multiple myeloma. Cerebral toxoplasmosis should be considered as one of the differential diagnoses in patients with neurologic signs following autologous HSCT.