미세 골절 진달을 위한 초음파 C-scan의 활용 가능성

박원근,최민주,이원흠,이윤준,이헌주,강창익,박전홍 제주대학교 공과대학 첨단기술연구소 2001 尖端技術硏究所論文集 Vol.12 No.2

The study examines the medical potential of an ultrasonic C-scanning technique and for diagnosis of the fatigue induced micro-fractures of the bone. In general, it is not easy to detect the micro­fracture by a simple radiological technique. In the study, the micro­fractures were made on the tibia taken from pigs using a three point bending. Comparison was made between the ultrasonic C-scan images (25 MHz) and X-ray images of the bones with the micro-fractures, It was found that the micro-fractures invisible on the X-ray images were observed on the ultrasonic images. It is proposed further in-vitro and in-vivo studies making the ultrasonic C-scan technique clinically useful for the diagnosis of the fatigued induced micro-fractures of the bone which are not possible to detect by the conventional radiological method.

지난 2년간의 학회지 "신경정신의학" 심사 평가보고

김찬형,김세주,김도관,김성곤,박원명,송동호,박용천,이영문,오강섭,정영철,이상열,김주한,이동영,이헌정,함병주,김율리,김문두,김정진,이강욱,천근아,김재진,홍진표,홍승철 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.6

권역심뇌혈관질환센터 사업의 비용-편익 분석

김병호 ( Byung Ho Kim ),감신 ( Sin Kam ),배상근 ( Sang Geun Bae ),김건엽 ( Keon-yeop Kim ),이원기 ( Won Kee Lee ),홍남수 ( Nam-soo Hong ),박형근 ( Hyeung-keun Park ),이혜진 ( Heyjean Lee ),조은정 ( Eun-jung Cho ),채성철 ( Shung C 한국보건정보통계학회(구 한국보건통계학회) 2017 보건정보통계학회지 Vol.42 No.1

Objectives: This study was conducted to investigate economic feasibility of operating Regional Cardiocerebrovascular Centers using cost-benefit analysis. Methods: The current study assessed cost and benefit data collected from nine hospitals which were designated as Regional Cardiocerebrovascular Centers between 2008 and 2010. Results: The operation of Regional Cardiocerebrovascular Centers reduced mortality rate and length of stay due to acute myocardial infarction and stroke and also decreased disability occurred after stroke. The total calculated cost of operating nine Regional Cardiocerebrovascular Centers was 19.85-22.30 billion won and the minimum benefit calculated was 23.98 billion won. Applying the maximum cost and the minimum benefit, the net benefit was 1.68 billion won, which is estimated to 190 million won per Regional Cardiocerebrovascular Center. Conclusions: The present study revealed that the operation of Regional Cardiocerebrovascular Centers was economically beneficial. The benefit would be larger if intangible benefit such as the long-term effects to community hospitals and enhancement of quality of life of patients and their families are considered.

국내 사람 브루셀라증 환자에 대한 3년 간의 추적 관찰 연구

이창섭,권근상,백병걸,박상원,이흥범 대한감염학회 2007 감염과 화학요법 Vol.39 No.4

목적 : 2002년 증례 보고 이후, 사람 브루셀라증 환자는 급격하게 증가하고 있는 실정임에도, 이와 관련된 장기간의 임상 증상과 혈청학적 추적 관찰에 대해서는 아직까지 보고된 적이 없다. 본 연구에서는 2003년 전북 일부 지역에서 집단 감염된 11명의 사람 브루셀라증 환자를 대상으로 장기간의 임상 경과와 혈청학적 변화를 알아보고자 하였다. 재료 및 방법 : 2003년 전라북도 정읍 지역에서 사람 브루셀라증으로 진단된 11명의 환자를 대상으로 10명의 환자가 임상 증상에 대한 추적 관찰에, 11명의 환자가 혈청학적 추적 검사에 포함되었다. 사람 브루셀라증의 추적검사는 standard tube agglutination test (SAT)로 시행하였고, 혈청학적 음성 전환은 SAT titer 1:40 이하로 정의하였으며, 브루셀라의 임상 증상이 진단 전 1년 미만으로 지속되었던 경우를 조기 회복기로, 1년 이상 지속되었던 경우를 지연 회복기로 정의하였다 결과 : 대상은 남자 8명, 여자는 3명이었고 이들의 평균 연령은 45세였다. 11명 중 10명이 축산업자였으며, 1명은 수의사였다. 3년 후 까지도 임상 증상이 남아 있다고 호소하는 환자는 8명(80%)이었으며, 만성 피로, 관절통이대부분이었고, 그 외 발열(1), 두통(2), 안통(1), 체중감소(1), 어지럼증(2)이 일부 있었다. 그러나 3년 후 추적 관찰에서 60% 이상 지속적으로 남아있는 증상은 만성 피로와 관절통이었다. 치료 기간은 최소 6주에서 최고 52주까지 다양하였으며, 중앙값은 11주였다. 혈청학적 추적 검사는 최소 11개월에서 최고 39개월까지 실시하였으며, 중앙값은 22개월이었다. 혈청학적 음성으로 전환된 시점은 치료시작 후 최소 5개월에서 최고 16개월이었으며 중앙값은11개월이었다. 결론 : 사람 브루셀라증에 걸렸던 환자들은 피로나 관절통과 같은 임상 증상이 지속적으로 남아 있을 수 있다. 그러나 이러한 증상이 재발을 의미하는 것은 아니기 때문에 항생제의 지속 복용은 필요하지 않다. 본 연구에서 혈청학적으로 마지막 음전된 시점이 치료 시작 후 16개월이라는 점으로 보아, 혈청학적 추적 검사는 치료 시작 후 최소 16개월 이상은 필요하다고 생각된다. Background : The first probable case of human brucellosis in Korea was reported in 2002. Since then there has been a gradual increase in the incidence and prevalence of the disease. There has not been any long-term follow-up investigation of the clinical course and serologic profiles of the disease in Korea. The present investigation is a 3 year clinical and serologic follow-up of human brucellosis patients in Chonbuk province. Materials and Methods : The investigation involved a total of 11 patients who were positively diagnosed with brucellosis in 2003. Clinical manifestations were evaluated either directly or via telephone interviews. The serologic follow-up was done by standard tube agglutination test (SAT). Negative sero-conversion was defined as an SAT titer less than 1:40. Early convalescence was defined as clinical manifestations of brucellosis observed within 12 months of diagnosis, and delayed convalescence was defined as clinical symptoms persisting longer than 12 months. Results : A total of eleven patients (8 males and 3 females; with a mean age of 45 years) participated in the study. Ten patients were livestock workers and one was a practicing veterinarian. Three years after the initial diagnosis, chronic fatigue and arthralgia were persistently observed in more than 60% of the patients in delayed convalescence. There was no evidence of relapse or reinfection of the disease. The median duration of antibiotics treatment and serologic follow-up were 11 weeks and 22 months, respectively. Negative sero-conversion was noted between 5 and 16 months after the initiation of treatment (with a median 11 months). Conclusion : Although the human brucellosis patients developed chronic symptoms such as fatigue and arthralgia even after negative sero-conversion, there was no evidence of any relapse or reinfection. This may mean that antibiotic intervention is not a justifiable recommendation. We also suggest that serologic monitoring be performed for at least 16 months after the initiation of treatment.

경연 대회를 통한 초ㆍ중고생의 창의력 신장 효과에 관한 연구

이희복,육근철,류해일,김현섭,김희수,박달원,유병환,김선효,김여상,서광수,변두원,서명석,배성효,박종석,심규철,이성희 공주대학교 과학교육연구소 2001 과학교육연구 Vol.32 No.1

미래 사회를 대비하기 위한 개인의 개성을 존중과 창의적인 능력을 지닌 인간을 양성을 목적으로 충청남도 지역의 초 ㆍ 중고등학생들을 대상으로 한 창의력 경연대회가 공주대학교 과학교육연구소에서 개최되었다. 충청남도 초 ㆍ중 ㆍ 고등학생들을 대상으로 실시한 창의력 경연대회는 창조적 아이디어를 내어 스스로 문제를 해결해 나갈 수 있는 교육 프로그램을 제공하는 좋은 기회였음이 확인되었으나, 일부의 팀에서만 참신하고 재미있는 아이디어들이 제안되었다. 여학생의 참가자 수가 상당히 증가하였으며, 대체적으로 입상권의 학생들의 상당 부분이 여학생이라는 것이 특이할만하다. 학년이 올라감에 따라서 창의적인 아이디어를 내는 양이나 질에 있어서 뒤떨어지는 것으로 분석되었으며, 토론 학습의 적응력이 미흡하고 발표력 및 청취력에 있어서도 떨어지는 것으로 나타났다. 따라서 중 ㆍ고등학교의 학교교육에서도 학생들에게 프로젝트형 탐구학습 프로그램의 적용은 물론 토론식 수습을 통한 학생들의 사고의 전환의 기회를 제공해야 할 것으로 사료된다. The creativity competition was held to foster the creativity of elementary and secondary school students in the Institute of Science Education, Kongju national University. It was found that the creativity competition effected on the improvement of inventing creative ideas and problem solving activities. But, only some competitors participated in semifinal and final contests, presented original and interesting ideas. More female students participated in competition than last year. More female participants were awarded a prize than males. Totally, participants were defective in discussion and communication, and presentation and listening ideas. Increasing grades correlated inversely with creativity and originality. There is need of inquiry project teaming programs and presenting opportunities of conversion of thinking by discussing instructions in school

臨界 原子爐의 核的 特性

李源根 慶熙大學校 1984 論文集 Vol.13 No.-

The purpose of this study is to measure and determine accurately the critical mass which is the most important unclear characteristics in operation of AGN-201 reactor and the minimum amount of unclear fuel, U-235, to sustain chain reaction. The reactor temperature to affect critical mass was 18.4℃ during performing this experiment. As the result of critical experiment, the critical mass is 687.5 grams under the temperature condition mentioned the above.

농축 계수비를 이용한 해산 식품 중의 허용농도 설정

이원근,이창민 경희대학교 산학협력기술연구원 1999 산학협력기술연구논문집 Vol.5 No.-

Concentration limit of radioactive accumulation is not established so, effective public information to the people is limit. furthermore, several data which is not suitable for korean is used. Therefore, in this paper, concentration limit is determined using Korean food intake. Even if there were already-established research data, the current research was helpful to researchers in laboratories by giving them the sense of the current status in determining permissible concentration and understanding the plant habitat characteristics about the power plant. Ministary of science of technology will adopt the new recommendation soon, so at this paper, dose limit of new value is used. Experts in this area worry about over-expure by estimation of simple intake limit, therefore, complex intake limit is determined about all kinds of fishery products to solve the problem.

臨界原子爐의 爐雜音 解析

李源根 慶熙大學校 1982 論文集 Vol.11 No.-

The reactor noise analysis methods have been widely employed for determining reactor parameters such as time constant and dynamic characteristics, assessing corrected operating characteristics, and diagnosing unexpected abnormal status in advance. Even though the reactor noise analysis methods are developing toward applying to the power reactor the basic theory for stochastic process of nuclear fission can only be verified though experimenting in a critical assembly. The present study is, thus, to develop the fundamental theories and verify through reactor experiments using AGN-201 critical assembly which starts to operate on campus recently. This paper deals with the basic approach to the reactor noise analysis, and is proceeded the detailed experimental results which will be reported in the succeeding reports.

除草劑의 種類와 施用量 및 플라스틱 필름 멀칭이 雜草發生과 고추의 收量 및 生育에 미치는 效果

李政明,曺哉銑,崔根元 慶熙大學校 1983 論文集 Vol.12 No.-

Studies were conducted to investigate the effect of Lasso [Alachlor: 2-Chloro-2'6'-dimethyl-N-(methoxymethyl) acetanilied]on mulched and nonmulched hot pepper filed. Lasso treatment greatly inhibited weed growth and the granular formulation was more effective than emusifiable concentrate in controlling weed growth in both mulched and nonmulched plots. Lasso effect was not apparent about 50 days after treatment. The growth of pepper plant was greatly promoted by mulching and yield of green peppers was more than doubled by transparent polyethylene film mulching. There was no plant in the entire plot which showed apparent phytotoxicity by Lasso treatment.

市民參與의 理念과 問題點 : 體制論的 接近을 中心으로

李元根 동국대학교 경주대학 1983 論文集 Vol.2 No.-

The main values of citizen participation in the administrative policy process in the democratic society are political equality and popular sovereignty, that are two central principles standing at the core of democratic practice. The value of political equality is pursued chiefly through the input function of citizen participation and the value of popular sovereignty is pursued chiefly through its external feedback function. Citizen participation greatly contributes to the development of democracy through a great deal of eufunctions. But there can be many problems about citizen participation, that is, the dysfunctions likely to be caused by citizen participation, the factors to restrict effective citizen participation, and the problems of citizen groups. To conclude, the opportunities and rights of citizen participation in the administrative policy process should be expanded to some optimal level where the dysfunctions of citizen participation would be minimized and its eufunctions maximized, all the way based on the system of contemporary representative democracy. In Korea, citizen participation in public administration is so much limited at present that it should be greatly expanded in the future for the development of democratic public administration. There are not a few difficult tasks to be carried out by administrators and citizens respectively for the sound expansion of citizen participation in public administration in the future. At an early stage in the expansion of citizen participation, administrators should take the lead in expanding citizen participation, but in the long run, citizens should do so.