대량의 각혈로 사망한 장티푸스 1예

한상우,유진홍,권순석,김성훈,박지찬,홍은정,최경성,박용완,장준희,안지원,박유경,강지영,박상미,신완식 대한감염학회 2004 감염과 화학요법 Vol.36 No.5

We experienced a 25 year-old male patient with typhoid fever complicated with massive hemoptysis. Pulmonary complication in typhoid fever is very rare and to our knowledge, there has been no report of hemoptysis as a main cause of death with this disease. We herein report a rare case of typhoid fever.

이동 물체의 에지를 이용한 변위 추정

이성순,김형종,한승조 조선대학교 동력자원연구소 1997 動力資源硏究所誌 Vol.19 No.1

In this paper, we propose a contour-based motion estimation scheme. It is based on the observation that the most significant frame differences occur along moving object edges. It uses discontinuities in image brightness and frame differences to estimate displacements along edges, and avoids the difficult feature-matching problem. The proposed system transmits the contour motion information as overhead information to the receiver. But as only one motion vector per edge neighborhood needs to be transmitted, the overhead is relatively low, while achieving an impressive reduction in the motion compensated prediction error.

수용성 미셀용액 내에서의 몇가지 안트라센 유도체의 광증감 작용에 미치는 pH 영향

高晟三,한동설,金純鍾 木浦大學校基礎科學硏究所 1996 基礎科學硏究誌 Vol.14 No.-

To examine the photosensitizing properties of 9-methylanthracene and 9-phenyl-anthracene, the concentration change of DPBF was determined during the irradiation with the light of 366nm in 95% MeOH, SDS and CTAB aqueous micellar solution at various pH. The concentration decreasing of DPBF by photosensitization was fast at low pH and especially was found to be very sensitive to the changes of pH in the range 4∼6. At high pH, the produced singlet oxygen seemed to be decayed by the reaction of OH. And it was found that the concentration of DPBF was decreased more fast in 95% MeOH solution than in aqueous micellar solution. Such results are believed that environment of the aqueous micellar solutions is more polar than that of 95% MeOH. It was also found that the 9-PA was more effective photosensitized than 9-MA, and the abilities of 9-PA and 9-MA to photosensitize oxidation reaction were found to be greater in SDS aqueous micellar solution than in CTAB aqueous media.

CASE 프로그램에 의한 중학생들의 인지가속 효과

최병순,한효순,강성주,이상권,강순희,박종윤,남정희 한국과학교육학회 2002 한국과학교육학회지 Vol.22 No.4

학생들의 인지발달을 촉진시켜 학습효과를 높이려고 개발된 CASE 프로그램의 효과를 조사했다. 중학교 1학년(841명) 학생들이 연구에 참가하였으며, 같은 분량의 시간동안 실험반에서는 교육과정에 따른 과학 교과 수업과 '생각하는 과학' 활동을 병행하였고, 통제반에서는 과학교과 수업만을 수행하였다. 연구 초기에 논리적 사고력 검사(SRT II)를 이용하여 집단의 동질성을 비교하고, 2년 동안 실험반에 CASE프로그램을 처치한 후 이질동형겸사도구인 SRT VII을 이용하여 처치별, 성별, 인지수준별 인지가속에 대한 효과를 조사했다. CASE 프로그램에 의한 중학생들의 인지발달 가속효과는 중간검사에서는 보이지 않았으나, 사후검사에서 상당히 큰 것으로 확인되었다. 성별에 따라 CASE 프로그램의 효과를 비교한 결과 남??여 중학생들 모두에게 유의미한 인지가속이 이루어진 것으로 나타났다. 남학생들 보다 여학생들의 인지수준이 더 발달된 것으로 밝혀졌으며, 처치와 성별간 상호작용 효과는 나타나지 않았다. 학생들의 사전 인지수준에 따라 CASE 프로그램의 효과를 분석한 결과, 모든 인지수준에서 처치효과가 뚜렷하게 있었으나 특별한 경향성은 나타나지 않았다. 특히 초기 구체적 조작기(ES=1.1.)와 전조작기(ES=1.07), 그리고 구체적조작 후기(ES=1.01) 학생들에게 상당히 큰 효과가 있었다. 이상과 같은 CASE 프로그램의 성공적인 결과는 현행 우리나라 과학교육과정 개정과 교수방법 개선에 시사하는 바가 많다. In an attempt to accelerate the development of formal reasoning ability of students, 'Thinking Science' activities developed by the Cognitive Acceleration through Science Education(CASE) project were implemented to 841 students in 7th grade aged 12+ in six middle schools over a period of two years. Homogeneity between the CASE group and control group was tested with SRT Ⅱ, while the improvement of formal reasoning ability of the students was tested with SRT Ⅶ. The results were analyzed by treatment, gender, and cognitive levels of the students. Statistically significant gains were shown in the CASE group compared with those in the control group. Cognitive level of girls in the CASE group significantly increased as compared with the control group, while there was moderate effect in boys. These results implied that the thinking science activities were effective in cognitive acceleration of girls aged 12+. It was shown that much more CASE students in pre or concrete operational level shifted. to formal operational level as compared with the control group while there were significant effects in all levels (ES=0.31∼1.10) without showing any tendency.

일부 청소년들에서 흡연노출량에 따른 혈중 카드뮴 농도

장성실,권윤형,배진순,노영만,한진구 韓國學校保健學會 2001 韓國學校保健學會誌 Vol.14 No.2

Objectives: We surveyed the prevalence of smoking among the adolescent population and analysed the correlation of the two exposure biomarkers-concentration of blood cadmium and urinary cotinine-to the smoking status. Methods: Subjects were 193 middle and high school students in Chungnam province. Blood cadmium and urinary cotinine were compared by sex and smoking status. Smoking status were classified by either the concentration of urinary cotinine or subjective answering as a smoker in the questionnaire. Results: Smoking prevalence was 24.6%, 36.2% and 6.7% among all subjects, male and female subjects, respectively. Average smoking amount was 17.5 and 1.5 cigarettes per month among the male subjects and female subjects, respectively Mean concentration of urinary cotinine among the male subjects was 135.57 ㎍/ℓ, and that of female subjects was 116.59 ㎍/. Direct smokers showed higher concentration of urinary cotinine than those of indirect smokers, and subjects with higher urinary concentration showed higher prevalence of smoking, too. Mean concentration of blood cadmium was 0.0572 ㎍/㎗ among the male subjects, and 0.0693 ㎍/㎗ among the female subjects. Among the male subjects, both exposure biumarkers showed significant correlation to the smoking status, but among the female subjects urinary cotinine did not show significant correlation to the smoking status. Conclusion: Concentrations of these two biomarkers suggested that this population had significantly high evironmental tobacco smoking(ETS) and efficient stop-smoking programs to reduce ETS should be directed to this population. Key words : environmental tobacco smoking, urinary cotinine, blood cadmium

급성대동맥박리증에서 수술전 경식도심초음파도의 역할

박성훈,원태희,원용순,한재진,안재호,이귀용 梨花女子大學校 醫科大學 醫科學硏究所 1999 EMJ (Ewha medical journal) Vol.22 No.1

급성대동맥박리증은, 특히 상행대동맥을 침범한 경우, 응급수술을 요하는 질환으로서 수술전 대동맥판의 손상여부, 질환의 범위, 내벽파열부위의 위치 및 가지혈관의 상태등을 파악하여 수술계획을 수립하여야 한다. 저자들은 상행대동맥을 침범한 3례의 급성대동맥박리증 환자에서 전산화단층촬영과 함께 수술전 또는 필요에 따라 수술후 경식도심초음파도를 시행하여 환자의 치료에 도움을 받았기에 문헌고찰과 함께 보고하는 바이다. Acute type A arotic dissection is a condition which requires emergency surgery. Surgeons want to know not only the extent of the disease but also the exact site of intimal tear as well as the presence of side branch involvement to plan the extent of surgery. Various non-invasive diagnostic tools(transthoracic and transesophageal echocardiography, conventional and spiral computed tomography and magnetic resonance imaging) and invasive angiography are available for the evaluation of the extent of dissection, site of intimal tear and side branch involvement. Each technique has its advantage and disadvantage. Especially, MRI has been accepted as a gold standard for the diagnosis of aortic dissection, but it is immobile and sometimes it cannot give us the information about the small intimal tear site. Transesophageal echocardiography has the advantage of movability and high resolution in addition to the ability of providing comprehensive information about the cardiac function. Because of these advantages, it has been widely utilized for the evaluation of patients with aortic dissection. We performed preoperative transesophageal echocardiography in addition to computed tomography in 3 cases of acute type A aortic dissection and report these cases with the review of articles.

멀티 프레임 PRA를 이용한 움직임 추정

김형종,이성순,최영일,조금배,한승조 조선대학교 동력자원연구소 1997 動力資源硏究所誌 Vol.19 No.1

We discuss the theory of motion estimation and motion compensation. The proposed algorithm uses more information from the input video image sequence than the traditional two-frame pel-recursive algorithms. And it uses fewer assumptions on the motion vectors among different video frame pairs. This paper shows two three-frame pel-recursive algorithm for predictive motion compensation which can estimate the d₁(from the previous frame f_t-1 to current frame, f_t) and d₂(from the frame before the previous frame f_t-2 to the previous frame, f_t-1) simultaneously, and three frame information to update the motion vector d₁when the past motion vector d₂is available.

발작과 의식저하를 동반한 급성 Methyl Bronmide 중독 2예

조광덕,임수빈,이순금,최성훈,김태훈,한군희,송경일 대한간질학회 2003 대한간질학회지 Vol.7 No.2

저혈당을 동반한 자가면역 인슐린 증후군 2예

박시형,이신원,정귀화,최창훈,이순희,한정훈,김정국,하승우,김보완 대한내분비학회 2001 Endocrinology and metabolism Vol.16 No.4-5

Adaptive Tire-Road Dynamic Friction Estimation and Emergency Braking Control Using Sliding Mode and Recurrent Fuzzy Neural Network

Seong Ik Han(한성익),Sae Han Kim(김새한),Dae Yeon Yeo(여대연),Young Do Lim(임영도),Kwon Soon Lee(이권순) 제어로봇시스템학회 2009 제어로봇시스템학회 합동학술대회 논문집 Vol.2009 No.12

In this paper, the longitudinal emergency braking problem of vehicles based on a LuGre tire-road dynamic friction is discussed. The adaptive friction observer is designed to estimate the unknown the tire-road friction parameters with sliding mode controller. The RFNN approximator is also designed to approximate not only the variation of friction parameters and vehicle mass but aerodynamic force as the maneuvering conditions Finally, the adaptive reconstructed error estimator is designed to compensate the approximation error of the RFNN estimator. When applied to a longitudinal emergency braking maneuver, the proposed control system shows that vehicles can be stopped quickly with a near maximum deceleration than the cases without robust tire-road friction observer via some simulations.