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김기정,곽정식,Kim, Gi-Jeong,Kwak, Jyung-Sik 대한수사과학회 2007 대한수사과학회지 Vol.2 No.1
자살은 불균형적인 사회발달로 인해 발생된 많은 사회문제들과 사회 전반적인 생명 경시적인 흐름에서 그 원인을 엿볼 수 있다. 이로 인해 기존의 다른 사회문제들에 대한 부수적인 차원에서의 접근이 이루어져 왔던 것이 현 실정이다. 지금까지 자살의 정의와, 자살의 원인 및 자살의 예방법에 관한 이론적인 연구는 활발하게 이루어 왔으나 자살문제는 다른 사회문제와는 달리 치료, 해결이란 거의 불가능하다. 치료, 해결을 할 수 있는 경우는 자살이 실패로 끝난 경우에만 할 수 있기 때문이다. 이에 본 연구에서는 2005년 한 해 동안 발생한 전체 변사사건 중 자살사건이 차지하는 비율을 파악하고 실제적인 원인을 자살수단, 직업, 연령, 학력 등의 연관성에 따라 나타난 특성분석을 실시하여 날로 심각해져만 가는 자살문제에 대한 대안을 제시하고자 하였다. 2005년 전체변사에서 자살이 차지하는 비율은 약 52.4%를 차지하였고 남성이 69%로 31%를 차지하는 여성에 비해 높았으며, 이는 사회활동과 관련이 있는 것으로 판단되며, 자살방법에 있어서도 남성은 투신, 독극물, 목맴 등 적극적인 방법(80%)을 택하는 반면, 여성은 수면제나 손목동맥절단 등의 소극적인 방법(60%)을 선택하는 경우가 높게 나타났다. 원인에서는 비관, 병고, 부정, 정신이상 등이 75% 이상으로 대부분 우울증세를 표출 후 자살을 하는 경우가 많았다. 또한 가정생계형 비관 관련 대학교 이하 저학력의 직접 노동형 종사자 등 무직자들의 자살이 많았으며, 최근 대졸 이상의 고학력자들과 정년 이후의 사회적 위치의 급격한 변화로 인한 신병비관 등의 우울증 관련 자살도 증가하고 있는 추세로 파악되었다. 전체적으로 원인은 여러 가지이나 최종 자살하기까지는 대부분 우울 증세를 표출하는 경우가 많은 것으로 파악돼 정신과적인 자살문제의 심각성을 알 수 있었다. 이러한 본 연구 결과는 현재의 자살추이가 앞으로도 계속 지속될 것이라는 예측을 함으로써 이에 대한 사회 정책을 유도하는 한편, 환경적, 사회적, 정책적 차원의 계속적인 지원으로 개인적인 갈등차원을 떠나 하나의 유행처럼 번질 수도 있으며, 지금보다 더욱 더 큰 형태의 문제로 다가올 수 있는 현실적인 사회문제에 대처할 국가 차원의 대비책 및 관리책 마련과 연구계획 수립의 기초 자료로 활용될 것으로 사료된다. From the numerous social problems generated by the unbalanced social development and the social trend of belittling life overall, we found the causes of suicide getting worse in its seriousness day by day. In reality, the problem has been approached in a collateral level in contrast with other social problems. There have been an active involvement in studying the definition, causes and ways of prevention of suicide theoretically until now. However, different from other social problems, it is almost impossible to treat or fix the problem of suicide. Only ways to treat or fix the problem is when the suicide has ended in failure. Thus, this study intends to examine the suicide rate among the total accidents during the year 2005, perform the analyses on the actual causes according to the relations such as the means of suicide, occupation, age group, educational background, etc. In order to present a solution to the issue of suicide becoming serious each day. Among the total accidents in 2005, the suicide rate came out to be approximately 52.4%. Among the result, 52.4%, male with 69% resulted higher than female with 31%, which appears to be related to the social functions. While men tends to take more active(80%) means of suicide like jumping off, poison, hanging, etc., women tends to take more passive(60%) means of suicide like sleeping pills, slitting wrist, etc. In terms of the cause, pessimism, illness, denial, mental disorder, etc resulted more than 75%, and there were many cases of suicide after exhibiting the signs of depression. Also there were higher suicide rate of the unemployed engaged in direct labor with educational background lower than college level related to the pessimism regarding the family living cost. We were able to determine the recent increase in the suicidal tendency of the educated people higher than the college level and the retired people with depression caused by the sudden change in social status. Overall there are several reasons for suicide, however, in most cases the signs of depression were exhibited until the final suicide, which tells us the serious psychological problem of suicide. Assuming that the current development of suicide will continue in future, the result of this study will guide the corresponding social policies, be utilized in preparing the insurance or management at the national level dealing with the real social problems that are not just a conflict of an individual, but could spread like a fad and become much bigger than the present by the continuous support at the environmental, social and political levels, and be utilized as the basic data to establish the research plan.
김기정(Gi Jeong Kim),서창호(Chang Ho Seo),박광호(Kwang Ho Park),차인호(In Ho Cha),김형곤(Hyoung Gon Kim) 대한구강악안면외과학회 1996 대한구강악안면외과학회지 Vol.22 No.1
The pleomorphic adenoma is the most common tumor of major and minor salivary glands, and it is composed of epithelial cell and mesenchymal elements. Macroscopically it has a surrounding capsule from which it can be enucleated, however these tumors do not have a true capsule but compress surrounding normal salivary gland, frequently having finger-like extensions into the normal tissues. In 1972, Krolls said recurrent disease is thought to be due to these small islands of tumor which can be left behind at surgery. Another theory of recurrence is that should the tumor be ruptured during excision spillage of tumor cells into the wound may lead to implantation and growth of multiple nodules of pleomorphic adenoma. (Fee et al., 1978) We experienced a case of recurrent pleomorphic adenoma on submandibular area which has clinically malignant characters. This mass was treated with wide surgical excision and it has been no specific change in close follow-up.
김종윤,김기정,박세준,김철수,배장근,김정우,김수중,Kim, Jong-Yun,Kim, Gi-Jeong,Park, Se-Jun,Kim, Cheol-Su,Bae, Jang-Geun,Kim, Jeong-U,Kim, Su-Jung 대한전자공학회 2001 電子工學會論文誌-SD (Semiconductor and devices) Vol.38 No.1
In this paper, we propose a new optical security technique using two phase masks based on interferometer. A binary random phase image is used as a reference image and the encrypted image is generated according to the phase difference between the reference image and the original image. If there is no phase difference of a same pixel position in two phase masks, interference intensity of the pixel has minimum value and if phase difference of a same pixel position in two phase masks is $\pi$, its interference intensity has maximum value. We can decrypt the original image by putting two phase masks on each of the two optical paths of the Mach-Zehnder interferometer. Computer simulation and the optical experiments show a good performance of the proposed optical security system. 본 논문에서는 컴퓨터와 리소그라피를 이용하여 암호화된 두 개의 위상카드를 제작하고, 마흐-젠더 간섭계를 이용하여 암호화된 이진영상을 복호화하는 방법을 제안하였다. 이때 두 위상카드 중 하나는 기준 영상으로 사용되고 다른 하나는 암호 영상으로 사용된다. 하나의 랜덤 위상 카드를 기준 영상으로 두고 암호화하고자 하는 영상에 맞게 빛의 간섭 현상을 이용하여 암호 영상으로 사용될 위상 카드를 제작하였다. 원 영상의 복원은 경로차가 같도록 구성한 마흐-젠더 간섭계의 두 경로에 기준 영상과 암호 영상을 위치시켜 간섭시킴으로써 영상을 복원할 수 있다. 위상 카드는 광세기 검출기로 볼 수 없을 뿐만 아니라 복제할 수도 없어서 개인 정보보호 및 인증시스템에 매우 유용하게 사용될 수 있다. 간단한 영상에 대한 광실험을 통하여 제안한 시스템의 타당성을 확인하였다.
폐동맥 폐색전증 환자에서 99m - Technetium DTPA Radioaerosol 을 이용한 폐환기 주사의 양상
조성우(Sung Woo Cho),김종수(Jong Soo Kim),김영선(Young Sun Kim),정연태(Yeon Tae Chung),김용훈(Yong Hoon Kim),박춘식(Choon Sik Park),정무찬(Moo Chan Jeong),최득린(Deuk Lin Choi),김기정(Gi Jeong Kim) 대한내과학회 1989 대한내과학회지 Vol.37 No.2
N/A We evaluated the diagnostic value of the 99m-Technetium DTPA radioaerosol ventilation scan in 22 patients who were suspected to have pulmonary embolism because of perfusion defects. 1) Nine patients showing matched defects on the ventilation-perfusion scan were excluded from pulmonary embolism. 2) Among the 13 patients with pulmonary embolism, 9 patients showed normal ventilation scans and 4 patients showed smaller defects on the ventilation scan than on the perfusion scan due to 2 cases of pulmonary infarction, 1 case of pleural effusion and 1 case of atelectasis. 3) Sizes of defects were multiple segmental in 2 cases, multiple lobar in S cases and more than one lung in 3 cases. We conclude that 99mTc-DTPA radioaerosol is useful in the ventilation lung scan for the diagnosis of pulmonary embolism.
슈미트햄머의 반발도와 초음파속도에 미치는 골재요인의 영향
김기정 ( Kim Ki-jeong ),이용성 ( Lee Yong Sung ),이백수 ( Li Bai Shou ),윤기원 ( Yoon Gi-won ),한천구 ( Han Cheon-goo ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.1
This paper reports the influence of aggregate factors on estimation of compressive strength by non-destructive test. According to the results, in the case of basalt and limestone aggregate, the compressive strength and the rebound value of schmidt hammer is larger and smaller than in the case of granite aggregate respectively. And, as the influence of maximum size of aggregate, they are higher in the case of maximum size of 25mm than in the case of maximum size of 10 and 20mm. Ultrasonic pulse velocity is similar in the case of lime stone aggregate, but grows slow in the case of basalt aggregate compared with granite aggregate. But the influence of maximum size of aggregate on ultrasonic pulse velocity is minute. Estimating compressive strength by rebound hammer method, the same estimating expressions can be applied to the field since the kinds and maximum size of aggregate do not influence on estimation of compressive. But, as for estimation of compressive strength by ultrasonic pulse velocity method, compressive strength is estimated more highly by 10MPa in the case of basalt aggregate, but the influence of maximum size of aggregate is minute.
김기정(Kim Ki-Jeong),한민철(Han Min-Cheol),윤기원(Yoon Gi-Won),백병훈(Baik Byung-Hoon),한천구(Han Cheon-Goo),송성진(Song Sung-Jin) 한국구조물진단유지관리학회 2003 한국구조물진단학회 학술발표회논문집 Vol.- No.-
This study is intended to suggest the estimating method of compressive strength by small size core and present the correcting method of compressive strength of core specimen to compensate for reduction of compressive strength by drilling core specimen. According to the results, compressive strength of Φ50mm core specimen decreases by 6.3% in comparison with standard specimen, and correlativity is favorable, so it is thought that though small size core is used, it is possible to estimate compressive strength exactly. Compressive strength of Φ50mm core specimen also increases with a decrease of height diameter ratio. Through regression analysis between height diameter ratio and compressive strength ratio of core specimen, height diameter ratio, at which compressive strength of Φ50mm core specimen and standard specimen is identical, is 1.77. Therefore, if height diameter ratio of Φ50mm core specimen is 1.8 in consideration of safety ratio, compressive strength of Φ50mm core specimen can be used as compressive strength of structure without correction.