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하악 제2대구치에서 치근의 이개도에 따른 치조골의 면적에 관한 연구
임동진,임성빈,정진형,홍기석,Rim, Dong-Jin,Lim, Sung-Bin,Chung, Chin-Hyung,Hong, Ki-Seok 대한치주과학회 2004 Journal of Periodontal & Implant Science Vol.34 No.3
The purpose of this study was to evaluate the alveolar bone surface following root separation angle in the mandibular second molars. The fifty mandibular second molars(which were extracted) were selected, and the alveolar bone surface following root separation angle of the selected teeth were evaluated. The results were obtained as follows; 1. The root separation angle of fifty mandibular second molars were divided into three groups. The first $group(10-20^{\circ})$ was made up of ten teeth, the second $group(20-30^{\circ})$ was made up of fifteen teeth, and the third group(30-40$^{\circ}$) was made up of twenty-five teeth. 2. The mean root separation angle was $28.1^{\circ}$. The mean alveolar bone rate on the mesial surface of the mesial root was 44.27%, on the distal surface of the mesial root was 36.52%, on the mesial surface of the distal root was 33.45%, and on the distal surface of the distal root was 25.28%. 3. The mean alveolar bone rate on the distal surface of the mesial root, which composed the root separation area, was 32.95% in the first group, 36.06% in the second group, and 38.22% in the third group. The mean alveolar bone rate in the mesial surface of the distal root was 31.40% in the first group, 31.93% in the second group, and 35.18% in the third group. 4. The positive correlation was found between the root separation angle and the alveolar bone rate in the root separation area.(P<0.05) Although the mandibular second molar is a very important tooth in the oral cavity, its treatment and diagnosis is very difficult due to the variation of its root form. When periodontal disease involves the mandibular second molar, the result of this study assists in its treatment and diagnosis.
임동진 ( Dong Jin Lim ),이윤기 ( Yoon Ki Lee ),윤희석 ( Hi Seak Yoon ),김민호 ( Min Ho Kim ) 한국복합재료학회 2003 Composites research Vol.16 No.3
타이어 벨트충내의 코드간 균열연결 및 층간균열진전을 모사하기 위해 자유단을 갖는 2층 고무/코드 적층시험편에 대한 4~11㎜ 변위제어 실험을 수행하였다. 자유단의 코드간 균열연결시의 폭방향 균열진전량은 45° 경사진 코드들간 길이의 절반에 도달할 때의 측정값으로 하였으며, 이는 탐침법에 의해 측정되었다. 또한, 자유단에서 코드들간 균열연결을 모하기 위해 2차원의 이상화된 모델링 기법을 고안하였다. 이론수명은 테어링에너지(균열파단면의 단위면적당 방출에너지)를 이용하여 코드간 균열연결수명(임계값)과 이후 최종파손까지의 수명으로 구분하였으며, 이들을 각기 실험값과 비교하였다. 임계값까지의 수명예측은 실험과 비교하여 약 20%, 최종파손까지 약 65%의 오차가 발생하였다. 따라서, 전체 이론수명은 실험과 비교하여 약 45%의 오차를 발생하였다. In order to simulate the crack connection between cords and the interply crack growth in the belt-layer of real tire, 2 ply rubberlcord laminate specimens with exposed edges were tested in 4-1 Imm displacement control. Measurement of the crack connection is evaluated when crack reaches the half of the length between 45 aligned cords, and the amount of the crack growth is measured by the steel probe method. 2 dimensional analytic modeling was performed to simulate the crack connection between cords at the exposed edges. Also, the theoretical life of the specimens was calculated from the crack connection life between cords(critica1 value) and from the critical value to the final failure by the use of Tearing energy(T); the strain energy release per unit area of one fracture surface of a crack. Then, theoretical life was compared with those of experiments. The life prediction up to the critical value has about 20% error compared to experimental life, and up to the final failure about 65% error. Therefore, total theoretical life has about 45% error compared to the experimental life, which is conceivable in the case of rubber.
DEA 를 통한 지방정부의 생산성 측정 - 인력 재정과 공공서비스 관계를 중심으로 -
임동진(Dong Jin Lim),김상호(Sang Ho Kim) 한국행정학회 2000 韓國行政學報 Vol.34 No.4
이 연구는 지방정부의 생산성은 분석한 것이다. 우리 나라 1998년 기준 71개 중소 도시정부를 대상으로 하여 3개의 투입변수 9개의 산출변수에 대해 자료포락분석법(Data Envelopment Analysis : DEA)을 시도하여 정부생산성을 분석하였다. 정부생산성 측정은 기술, 분배, 규모, 비용효율성의 4차원으로 구분하였으며, DEA모형 중 CRS, VRS 모형을 사용하였다. 분석결과 기술, 비용, 규모 효율성이 높을 도시의 특성으로는 재정자립도가 높고 인구규모가 크고 1인당세출규모는 적고 공무원 1인당 인구수가 많은 지역일수록 정부 생산성이 높은 도시로 분석되었다. 기술효율성 높은 도시를 구체적으로 살펴보면, 도시규모가 50만 嶺도의 도시, 재정자립도가 90%이상의 도시, 1인당 세출액이 400∼600천원 수준인 도시, 공무원 1인당 인구가 300∼350명 수준의 도시로 분석되었다. 비효율성이 가장 높은 도시군으로는 인구 50만 정도의 도시, 재정자립도가 90%이상인 도시, 1인당 세출액이 800∼1000천원 수준인 도시, 공무원 1인당 인구수가 250∼300명 수준의 도시로 분석되었다.
호주 이민정책의 변동과정 및 정책지향 분석 : 단속평형이론을 중심으로
임동진(Dong-Jin Lim) 한국비교교육학회 2012 比較敎育硏究 Vol.22 No.1
The purpose of this study is to analyze the changing processes and its specific policy orientation of immigration policies from 1945 to 2012 in Australia, which is one of the traditional immigration nations. In order to analyze of changes in immigration policy, this paper utilized Jones & Baumgartner(2005)’s punctuation equilibrium theory. The results of this study can be summarized as follows. First, Australian immigration policy can be categorized into four types as follows: assimilation policy(1945∼1973), non-discrimination policy(1973∼1978), multicultural policy(1978∼2001), and citizenship and integration policy(2001∼2012). Second, refugee situations in Southeast Asia and threat of terrorists such as 9/11 terror strongly influence the change of immigration policy in Australia as an environmental pushing factor. Third, the enactment of immigration laws such as Racial Discrimination Act(1975) and Australian Citizenship Act(2007) was essential factor to change immigration policy radically and fundamentally. Finally, it is resulted that Australian immigration policies was affected by several factors like environmental factors, core pushing factors, and policy orientations, and that the type of punctuation (degree of policy change) shows a certain cycle patten from low-salience punctation to high-salience punctuation and from high-salience punctuation to low-salience.
임동진(Lim, Dong-Jin),정재호(Chung, Jae-Ho) 한국부동산정책학회 2011 不動産政策硏究 Vol.12 No.1
Real Estate is known as the one of the three requisites for human survival with clothes and food, and it is essential in every fields included social factors, economical factors even technical factors. An objective analysis and safety is required because of the contracts consisted by the parties to a transaction privately. Disputes without a careful analysis and safeguards being occurred constantly is the reality of the situation and that is why people engaged in the real estate brokerage and people directly concerned want a safe real estate transaction. There were many studies of stability progress of real estate transaction but almost the whole studies and discussions were treated only in political issue. Especially studies in taxation system aspect haven’t been enough covered as much as relatively other aspect has done. The condition of Korean real estate market Considered, promotion safeties of transactions through an institutional framework would be bounded. The Escrow system in Korea was enforced by NAREB(National Association of Real Estate Brokers) in January of 2004, some of financial institutions and escrow firms under the Licensed Real Estate Agents and Report of Real Estate Transactions Act and escrow relevant regulation of its implementing ordinances. However, since 2006, it barely keeps itself in existence because of lack of publicity, poor coefficient of utilization. As long as current law about escrow that supports safety of real estate transactions is exist, escrow system should be invigorated by a drastic tax reform through the introduction new tax systems such as a secure transaction tax, a house’s value tax.