운동에너지 탄에 따른 전투시스템 내의 순간화재발생에 대한 해석적 연구

이승철(Lee Seung-Chul),전우철(Jeon Woo-Chul),이해평(Lee Hae-Pyeong),이헌주(Lee Heon-Joo),이창현(Lee Chang-Hyun) 제어로봇시스템학회 2012 제어로봇시스템학회 합동학술대회 논문집 Vol.2012 No.7

본 연구는 외부 위협탄에 의한 전투시스템의 취약성을 분석하기 위한 선행연구로써, 운동에너지 탄의 종류에 따른 가상의 전투차량 내부에 적재포탄에서 순간화재발생 여부에 대한 전산해석을 수행하였다. 본 해석은 Autodyn 프로그램을 사용하였으며 순간화재발생을 판단하기 위해 Lee-Tarver ignition and growth model을 이용하였다. 본 계산에서 운동에너지 탄은 type A와 type B 두 가지로 설정하였고, 고폭탄은 COMPB, TNT 및 PBX9404를 설정하였다. 전산해석 결과, 고폭탄의 재질이 TNT와 PBX9404가 COMPB 재질보다 순간화재발생 확률이 상당히 높음을 알 수 있고 type B의 운동에너지 탄이 type A 보다 순간화재발생 확률이 다소 높음을 알 수 있었다.

운동에너지 탄과 적재포탄에 따른 전투시스템 내부에서의 순간화재발생에 대한 전산해석

이승철,전우철,이해평,이헌주,Lee, Seung-Chul,Jeon, Woo-Chul,Lee, Hae-Pyeong,Lee, Heon-Joo 한국군사과학기술학회 2013 한국군사과학기술학회지 Vol.16 No.6

In this paper, numerical analysis was performed about whether the flash fire of loaded shells breaks out in the virtual combat vehicle according to sorts of the kinetic energy ammunition as the preceding research for vulnerability analysis inside the combat system by an external threaty ammunition. In this simulation, Autodyn program was used and the Lee-Tarver ignition and growth model was used to determine the flash fire outbreak. In this study, the kinetic energy ammunition was set of type A and type B in two kinds and the loaded shells was set of COMPB, TNT, PBX9404 and ANB. As a result, TNT and PBX9404 have much higher flash fire probability than COMPB in high explosive, ANB has very low flash fire probability.

서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

淋菌의 藥劑耐性樣相에 對한 調査硏究

李承薰,石鍾聲,朴蕙瓊,金景俊,柳在根,李龍雨 國立保健硏究院 1973 국립보건연구원보 Vol.10 No.-

한 대학 신입생의 우울수준과 관련변인에 관한 연구

이명학,남해성,손석준,이정애,김병우 대한보건협회 1994 대한보건연구 Vol.20 No.2

1994년도 한 대학 1년생을 대상으로 8개항목의 생활만족지수(LSI-W) 그리고 20개항목의 우울지수(CES-D) 및 관련변인들을 조사하여 각각의 점수와 우울증의 유병률을 계산하고 서로간의 관련성을 조사하여 다음과 같은 결과를 얻었다. 1. 생활만족지수의 평균점수는 9.98이었고 비흡연군, 비음주군, 운동을 하는 군에서 평균점수가 유의하게 높았다(p<0.01). 2. 우울지수의 평균점수는 17.2였고 여학생에서 남학생보다 유의하게 높았고, 우울증의 유병률은 19.8%이었고 여학생에서 남학생보다 유의하게 높았다(p<0.01). 3. 우울증세 고위험군과 저위험군에 있어서 건강에 대한 본인의 생각과 본인이 인지하는 체중에서 차이가 있었으며, 생활만족지수, 가족수, 체중, 신장에서 유의한 차이를 보였다(p<0.05). 4. 우울지수와 생활만족지수, 연령, 종교활동기간, 신장, 체중등과는 음의 상관을 나타내고(p<0.01), 가족수, 수면시간, 경제수준과는 양의 상관을 보였다(p<0.01). 5. CES-D에 영향을 미치는 변수를 알아보기 위한 단계적 로지스틱 회귀분석에서 생활만족도, 성별, 건강에 대한 본인의 생각, 본인이 인지하는 체중, 흡연, 음주가 CES-D에 의한 우울증 발현에 있어서의 유의한 요인으로 나타났다(p<0.05). The questionnaire survey using the Center for Epidemiological Studies-Depression Scale(CES-D) and 8-items Life Satisfaction Index Well-being(LSI-W) and other variables was conducted to determine the prevalence of depression and to identify the correlation among CES-D and related factors. Study population was the whole freshman group newly enrolled in a university. The results were as follows; 1. Mean score of LSI-W was 9.98 and that score was higher in non-smokers, non-drinkers and exercise group (p<0.01). 2. Mean score of CES-D was 17.2 and the prevalence of depression was 19.8%. And those were significantly higher in female than in male(p<0.01). 3. Perceived health status, perceived weight, LSI-W, family size, weight and height were significant variables between high and low risk group of depression(p<0.05). 4. CES-D score was negatively correlated with LSI-W, age, duration of religious life, height, weight and po-sitively correlated with family size, sleeping time and economic status(p<0.01). 5. In the regression analysis significant predictors of the depression were sex, preceived health status, weight, smoking and drinking(p<0.05).

소아에서 발생한 Calcaneal Petechiae (Black Heel) 1예

이호섭,우상혁,유화정,유동수,송해준 대한피부과학회 2004 대한피부과학회지 Vol.42 No.1

Calcaneal petechias (black heel) is a traumatic lesion affecting the back of posterolateral aspect of the heel. An asymptomatic, pigmented, macular lesion is found on one or both heels immediately above the hyperkeratotic border of the foot. It is caused by any sport, such as basketball, tennis, or football, that leads to slamming of the foot against the shoe. Calcaneal petechilae is probably more common than is realized. As it is usually symptomless, it may be disregarded or only observed by chance. The importance of the lesion lies in its clinical resemblance to a malignant melanoma. We report a case of calcaneal petechiae which was confused clinically with a melanoma. (Korean J Dermatol 2004;42(1):84~86)

[1.1.1.1]Paddlane과 할로겐 화합물과의 반응

李愚鵬,吳東元,黃悳海,權明淑,鄭宰準 慶北大學校 師範大學 科學敎育硏究所 2002 科學敎育硏究誌 Vol.26 No.-

[1.1.1]Paddlane has an inverted structure at two bridge-head carbon atoms. We will describe the reaction of [1.1.1]Paddlane and [1.1.1.1]Paddlane. The reaction of [1.1.1]propellane with singlet methylene affored 1,3-Dimethylene as the major product and [1.1.1.1]paddlane as the minor products were obtained. The reaction of [1.1.1]propellane with triplet methylene was carried out in the similar conditions. The result afforded 1,3-Dimethylenecylopropane as the major product and various side products were also obtained. But no trace of [1.1.1.1]paddlane was detected. After the synthesis of [1.1.1.1]paddlane, continuously [1.1.1.1]paddlane reacts with iodide. The product that I expected for 1,3-diiodo-tricyclo[1.1.1.1]hexane is different. and has unsymmetrical structure.

Prostaglandin이 家兎 腎皮質의 Na-K-ATPase 活性度에 미치는 影響

李星雨,朴海根 충남대학교 의과대학 지역사회의학연구소 1985 충남의대잡지 Vol.12 No.1

Renal prostaglandins(PGs) are synthesized in both the cortex and the medulla. PGs modify the renal excretion of salts and water. This effects of PGs are related to several different sites of action in the kidney that include : 1) direct inhibitory effects on ion transport in the distal tubule: 2) enhancement of basal water permeability of the collecting tubule and inhibition of the hydroosmotic effect of vasopressin. On the other hand, Na--K-ATPase act as carrier of active Na^t transport across the cell membrane. This study was attempted to investigate the action of PGs on the Na-K-ATPase activity in the renal cortical homogenate. PG E_2 and F_2αconcentration in the incubation medium were 100, 10, 1.0 mg/ml, respectively. The results obtained are summarized as follows: 1. Total ATPase and Na-K-ATPase activity of the renal cortical homogenate were 15.11±0.64 and 1.65±0.18 μM/10min/mg protein. 2. Total ATPase activity in PG E_2 concentration of 100㎍/ml was significantly inhibited as 80.4±5.6% to the control value. 3. PG E_2 inhibited the Na-K-ATPase activity. Especially, 1.0㎍/ml in concentration significantly inhibited the Na-K-ATPase activity as 75.4±19.8 % to the control value. 4. PG F_2α also inhibited the Na-K-ATPase activity. Especially. 1.0 ㎍/ml in concentration significantly different. From the above results, it was suggested the action of PG E_2 and PG F_2α on the kidney was mediated by inhibition of renal cortical Na-K-ATPase activity.

臺灣語를 통해 본 臺灣 國語 發音의 特徵

李海雨 중국어문연구회 2000 中國語文論叢 Vol.19 No.-

臺灣從蔣介石政府大力推行國語以來, 國語普及有相當的成果, 除了老人層以外幾乎沒有人不會說國語. 但是臺灣人口中臺灣本土人占百分之八十, 所以臺灣國語不得不受臺灣語的干涉. 我們仔細觀察臺灣人實際使用國語的狀況, 許多人的發音和臺灣標榜的標準國語相比, 惑多惑少都有一些差別. 本論文專門討論臺灣國語發音的情況, 包括聲母, 韻母和聲調. 臺灣標準國語(相當於北京話音韻系統)22個聲母當中, 臺灣實際的國語語音減少九個聲母, 只剩下十三個聲母--[p, ph, m, t, th, l, ts, tsh, s, k, kh, x, 口]. 捲舌音[ts, tsh, s]和舌面音[t口, t口h, 口]都合倂爲舌尖音[ts, tsh, s], 盾齒音[f]變化爲喉音[h][n]ghk[l]互相混淆, [z]和[ㅣ]變成[ㅣ]的單向演變. 在韻母方面, 臺灣語音缺乏臺灣標準國語具有的韻母的時候, 以臺灣人容易發音的臺灣語韻母代替臺灣標準國語韻母, 北京話裏常見的兒化韻?少存在. 聲調的最大特徵是四聲調値起落幅不大, 彼此差異性減少, 使單字的基本語調趨向平淡. 對輕聲的處理, 只注意少數的固定輕聲, 一律發本調. 總而言之, 臺灣實際的國語雖然基礎於臺灣標準國語, 但是?的發音系統特性反而 和臺灣語音韻系統相似. 臺灣標準國語中的某些發音是母語(卽臺語)中沒有的. 這類音就以母語中類似的發音代替, 省略惑添加, 形成臺灣國語固有的特性.

분자선 에피탁시로 Si 기판 위에 성장한 GaAs/Ge 에피층의 특성

우용득,이해익 우석대학교 부설 기초과학연구소 1997 기초과학연구소 논문집 Vol.2 No.-

Properties of GaAs/Ge epilayers grown using two step growth method on Si substrates by molecular beam epitaxy(MBE) are investigated using scanning electron microscopy(SEM), transmission electron microscopy(TEM), double crystal X-ray diffraction(DCXD), photolumin escence(PL) spectroscopy and Raman spectroscopy. PL. Raman and DCXD results show that the GaAs epilayer grown by two step growth method has best crystallinites. Because of the high temperature growth in two step growth method has an annealing effect upon the inital prelayer and the Ge buffer layer, resulting in the suppressed dislocatin initation.