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이강영 ( Gang Young Lee ),송주석 ( Jooseok Song ) 한국정보처리학회 2009 한국정보처리학회 학술대회논문집 Vol.16 No.1
RFID 시스템은 장차 현재의 바코드 시스템을 대체할 수단으로 발전하고 있으며 점차 그 응용범위가 확대됨에 따라 개인정보 노출 등 보안요소에 대한 요구가 증대되고 있다. 지금까지 해시 기반의 인증기법과 재 암호화 기반의 인증기법이 소개되었으며 본 논문은 현재까지 소개된 인증기법에 존재하는 문제점을 지적하고 해시 기반의 인증기법에 기반하여 위치 추적, 재전송, 스푸핑 공격에 안전한 상호 인증 프로토콜을 제안한다.
탄저압력계수를 이용한 5.56mm 소총의 압력-이동거리 곡선 산출
이상길,이강영,Lee, Sang-Kil,Lee, Gang-Young 한국군사과학기술학회 2007 한국군사과학기술학회지 Vol.10 No.3
As the propellant mass is being accelerated out of the gun chamber along with the projectile, a continuous pressure gradient exists between the end of chamber and the base of the projectile. For this reason, the base pressure-travel curve is very important to design a conventional gun barrel in the interior ballistics, but it is not obtained briefly by empirical or theoretical method. In this paper, a simple relation between chamber pressure and base pressure was determined by the factor of base pressure(Cb) obtained from the experimental method. The simple relation gives a reasonable prediction for the reduction of pressure between the breech and the base of projectile owing to the axial gradient in the gun tube. The predictions have been validated by the infrared screen sensor and the PRODAS(PROjectile Design and Analysis System) for interior ballistic systems. Therefore, the base pressure-travel curve could be calculated from the chamber pressure measured by piezoelectric sensor. The base pressure-travel curve obtained from the simple relation offers initial information to gun barrel designer and is used for calculation of muzzle velocity.
김선영 ( Sun Young Kim ),김희진 ( Hee Jin Kim ),김창기 ( Chang Ki Kim ),윤혜령 ( Hye Ryung Yoon ),배혜경 ( Hye Gyung Bae ),이선화 ( Sun Hwa Lee ),성낙문 ( Nack Moon Sung ),김대연 ( Dae Yeon Kim ),이강영 ( Gang Young Lee ),조영수 ( 대한결핵 및 호흡기학회 2010 Tuberculosis and Respiratory Diseases Vol.68 No.3
Background: The increasing incidence of multidrug-resistant tuberculosis (MDR-TB) and extensively drug-resistant tuberculosis (XDR-TB) has become a serious worldwide problem. However, there is insufficient data regarding the current status of MDR-TB and XDR-TB in Korea. This study examined the recent status of MDR- and XDR-TB using the data from 7 laboratories, in which almost all drug susceptibility tests (DST) for Mycobacterium tuberculosis were performed. Methods: The patients` identification data and DST results were collected from all 7 laboratories from 2001 to 2006 and the number of patients with MDR-TB and XDR-TB were calculated. Results: The number of DSTs was 140,638 for 6 years with an increasing incidence each year (p<0.001). The number of DST with MDR results was 18,510 and personal identifying information was obtained in 16,640 (89.9%) tests. The number of MDR-TB patients from 2001 to 2006 was 2,329, 2,496, 2,374, 2,300, 2,354, and 2,178, respectively, when counting the duplications in a year as one patient. The number of MDR-TB patients when counting the duplications in 6 years as one patient was 2,281, 1,977, 1,620, 1,446, 1,512, and 1,373, respectively. When the same method was adopted, the number of XDR-TB patients was 191, 238, 282, 260, 272, and 264, respectively, and 189, 150, 130, 90, 122, and 110 patients, respectively. Conclusion: Despite the national efforts to control TB, there are still a large number of MDR- and XDR-TB patients in Korea.
기저귀 피부염의 임상 및 칸디다 균속의 검출에 관한 연구
김정애(Jeong Aee Kim),김선훈(Seon Hoon Kim),정혜림(Hae Lim Chung),김희주(Hee Ju Kim),이강영(Gang Young Lee) 대한피부과학회 1991 대한피부과학회지 Vol.29 No.2
Diaper dermatitis is an infant dermatosis associated with the wearing of diapers, Despite of its high frequency in clinical pediatrics the clinical characteristics are not well described in the korean literatvre. We investigated the clinical and mycological characteritics of diaper dermatitis in 50 serial patients. Clinically diaper dermatitis was classified. into five categories,irritant contact derniatitis(ID), candidiasis(CD). combined rash of ID and CD(CR.), intertrigo, and miliari. Of 50 patients with diaper dermatitis, 18 had ID; 16, CI3; 10, CR; 5, intertrigo, and 1, miliaria, The mean age of patients with ID (11.8 months) was higher than that of patients with CD (4.0 months). Candida albicans(C. albicans) w is isolated from 25 patients with diaper dermatitis. The rate of positive cultures by clinical diagnosis was 130% in CD, 11.1% in ID, 60, 0% in CR, and 20.0% in intertrigo. C. albicons was isolated from 23 patients(82.1%) of patients with clinically suspected Ci) and 2 of 22 patients without the characteristic erythematous papulesThe presence of eryhematous papules was the most characteristic clinical feature of infection, Other candida species isolated from cut,aneous lesions were C. tropicalsis, C.'. parapsiolosis, and C. stellatoidea (Kor J Dermatol 29(2):159 166)
박승함,이강영 한양대학교 의과대학 1982 한양의대 학술지 Vol.2 No.1
Infection of the urinary tract is one of the most common bacterial disease. Many resistant strains, causing urinary tract infection have increased gradually, the urinary tract infection is difficult to cure. In urinary tract infection, bacterial culture and antibiotic sensitivity test are important in clinical management. Widely used disc method is a convenient routine method and is proven as proper method for selection of antiviltics, but it is no guidance for proper dosage of antibiotics. This study deals with epidemiological review of the patient and the bacteriological examination on 208 strains, isolated from urine specimen that were referred to the department of clinical pathology for bacterial culture from June to August, 1981. Among these pathogens, the most prevalent one was E. coli. And 110 strains of E. coli were examined as disc method and agar dilution method for antibiotics susceptibility test. The results are as follows: 1. By far the most common pathogens were the E. coli(59.1%) and lesser extend, K. pneumoniae(17.8), Enterococci(11%), E. cloacae(6.3%) and Pseudomonas as (5.8%). 2. The sexual incidence of male to female revealed as 1:3. 3. Important disorders causing urinary tract infection were indwelling catheter (complicated in urethritis and dystitis) of 42 cases (20.2%), Acute pyelonephri tis of 31 cases(3.4%), cystitis of 7 cases (3.4%), and nephrotic syndrome of 6 cases(2.9%) etc. 4. The result of agar dilution method of 110 strains of E. coli disclosed 96.4% were inhibited by 4 mcg/ml amikacin, 92.7% by 1 mcg/ml gentamicin, 90.9% by 2 mcg/ml tobramycin, 93.6% by 64 mcg/ml cephalothin and 16.4% by 32 mcg/ml carbenicillin. In spite of those antibiotics such as amikacin, gentamycin revealed high percentage of susceptibility in low concentrations, cephalothin and carbenicillin showed high percentage of resistance even in high concentrations. 5. The disc method and agar dilution method showed similar results in comparison of inhibition rate of bacterial growth in each antibiotics. 6. RUA according to the time and temperature changes, (the urine standing at room temperature) sugar was disappeared after 24 hrs. especially in cas of many bacteria were shown in microscopic examination. 7. Colony count according to the time, temperature and media changes, no colony was observed at 4℃ and showed increasing colony count as time lasting at 28℃ 0r 37℃. In latter case, no difference was noted between urine and BHI broth. After 24 hrs, no colony was observed at 24℃ and innumerable were at 28℃ and 37℃. It should be emphasized that the culture of causative agents of urinary tract infection are susceptiptible to influences from the method of specimen collection and storage or transfer condition before the testing.
安明姬,閔得映,鄭孝哲,李康映 한양대학교 의과대학 1988 한양의대 학술지 Vol.8 No.1
A case of human anisakiasis involving stomach is presented. A 31 years old Korean male working at fishery visited to the clinic with severe epigastric pain. Two days before the onset of illness he had eaten raw fish. On gastrofiberscopic examination a mass measuring 1×0.5cm was observed on the antrum: a glistening whitish worm was demonstrated on the center of the mass with redness and bleeding. The white larva of Nematoda measuring 9×0.4mm without tail part was submitted. For parasitic identification, it immersed in the lactophenol solution (phenol 10gm, glycerol 10.6ml, lactic acid 8.2ml, D.W. 10.0ml) for 10days and after that stained H and E. Mouth was surrounded by three lips with multiple irregular sized dentricles. Esophagus was measured total lenth, 1.13×0.15mm, anterior muscular portion, 0.53×0.15mm, and postericr ventricular portion 0.83×0.15mm. Cecum and ventricular appendage were absent, and tail part and terminal mucron were cut off. Excretory pore was seen betweem sibventral lips as base. The cut section of the parasite showed a hyalinized smooth cuticle, polymyarian style muscular layer, esophagus (muscular and ventricular) and Y-shaped lateral chord. Intestinal portion was degenerated and was amorphous. It was suggested that this worm seems to be a larva of Anisakis spp., type unknown.