• 대한치과의사협회지
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• 제14권6호
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• pp.519-522
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• 1976

The author observed the rate of incliation of abutment teeth to the edentulous side. The selected subjects for this study was 370 cases of male & female ranging frorm the age of 14 to 50. The obtained result are as follw; 1) The mesial abutment teeth to the edentulous apaee showed inclination toward distal side. 2) The distal abutment teeth to the edentulous space showed inclination yoward mesial side. 3) The opposing teeth to edentulous space showed marked elongation. 4) The mesially inclined rate of mesial abutment teeth revealed minimal occurrence. 5) The rate of inclination of abutment teeth was more prevalent in younger patients.

• 대한수의사회지
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• 제20권5호
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• pp.304-308
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• 1984

The authors made a survey infestation rate of endoparasites in wild .animals ( deer 68 heads and wild boar 88 heads) at Chon-Buk province. The results are summarized as follows; 1. Infection rate of species in deer Fasciola hepatica $22.8\%$ Oe

• 한국콘텐츠학회논문지
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• 제13권6호
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• pp.236-245
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• 2013

본 연구는 노인자살증가의 원인을 파악하기 위해 거시적인 측면의 관점에서 노인자살률과 사회 경제적요인의 관련성을 분석하였다. 노인자살의 이론적 배경은 사회학적 관점과 경제학적 관점에 기초하여 설명하였다. 노인자살률의 경제적 요인에는 경제성장률과 실업률 그리고 노인의 경제활동참가율과 상대적 빈곤율(소득불평등율)을 포함하며, 사회적 요인의 범주에 속하는 변수로는 사회복지지출비, 이혼율, 그리고 고령화비 증가율과 노인부양비를 포함한다. 주요 연구결과로는 첫째, 노인의 경제활동참가율이 낮을수록 노인자살률이 높아지는 경향이 있었다. 둘째, 사회복지지출비가 낮을수록 노인자살률이 증가하는 것으로 나타났다. 셋째, 상대적 빈곤율, 고령화비 증가율, 그리고 노인부양비는 공히 이들이 증가할수록 노인자살률도 동시에 증가하는 것으로 나타났다. 끝으로 한국노인자살률의 지속적 증가를 예방하기 위해서 거시적 차원의 사회 경제적 정책방안을 제언하였다.

• 대한치과의사협회지
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• 제10권12호
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• pp.813-816
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• 1972

The authors have observed 207 cases on the results of pulp healing after pulp capping. The results are as follows: 1) We could have success-rate of 70% in 207 cases at the ages from 14 to 59. 2) The success-rate in male is 72.4% in 87 cases, and female is 67.5% in 120 cases. So we observed that success-rate was slightly higher in male than female. 3) In view of age group, it was observed that success-rate was 79% in 129 cases at 30 ages below, 62.5% in 40 cases at 30-40 ages, 47.3% in 38 cases at 40 ages over. So we found that the failure-rate was increased by aging.

• 대한치과의사협회지
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• 제14권8호
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• pp.655-658
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• 1976

The auther had studied dental caries and periodontal disease and other important oral disease in the 806nout patient who came to dental Department in N.M.C. during 1974. The obtained results were as follows ; 1) The dental caries experience rate in the out patient of Dental Departanent in N.M.C. was 8202% and the D.M.F. teeth index was 3.3. 2) The decayed teeth index was 2.18 and the missed teeth index was 0.69 and the filled teeth index was 1065. 3) The periodontal disease rate was 82.8% 4) The oral cancer rate was 2%, mandible and maxillary fracture rate was 4%, and trigeminal neuralgia rate was 0.6%.

• 한국주거학회논문집
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• 제17권2호
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• pp.11-18
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• 2006

For the more comfortable thermal environment in residential buildings, it was necessary for variable components like as automatic flow limiting valves and/or balancing valves in hydronic system. And, these components had an effect on flow-rate and pressure inside pipe. In this case, the incompatibility between the design for the heating system and the selection of equipment was the causes of several problems in heating pipe network. In this study, we peformed measurements and analyses of flow rate and pressure inside pipe for radiant floor heating in residential buildings through field surveys and experiments in order to find out the actual conditions and problems. On the basis of this, we suggested the approach for the optimal flow-rate and pressure maintaining inside pipe in individual heating system.

• 대한치과의사협회지
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• 제12권3호
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• pp.177-182
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• 1974

The 800 extracted permanent teeth of first and second molar were observed and obtained the following results; Those teeth were extracted from the population of dentistless rural area. The cause of extraction of those teeth was only the dental caries. It was performed by the free dental service team from 1966 to 1972. The findings were as follows: 1. The most incidence of caries occurrence was on the occlusal surface and the least was lingual surface. 2. The distal surface caries rate was higher than the other surface except occlusals. 3. The average rate of decayed surface was higher in the second molar group than the first molar. 4. The average rate of dacayed surface was higher in the teeth of mandible than maxilla. 5. The average rate of decayed surface was higher in female than male. 6. The average rate decayed surface per tooth was 2.54±1.98.

• 한국결정학회:학술대회논문집
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• 한국결정학회 2002년도 정기총회 및 추계학술연구발표회
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• pp.53-53
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• 2002

Alkali-soluble random copolymer (ASR) was used as a functional resin in the emulsion polymerization of styrene to prepare structured nanoparticles. The calorimetric technique was applied to study the kinetics of emulsion polymerization of styrene using ASR and conventional ionic emulsifier, sodium dodecyl benzene sulfonate (SDBS). ASR could form aggregates like micelles and the solubilization ability of the aggregates was dependent on the neutralization degree of ASR. The rate of polymerization in ASR system was lower than that in SDBS system. This result can be explained by the creation of a hairy ASR layer around the particle surface, which decreases the diffusion rate of free radicals through this region. Although a decrease in particle size was observed, the rate of polymerization decreased with increasing ASR concentration. The higher the concentration of ASR is, the thicker and denser ASR layer may be, and the more difficult it would therefore be for radicals to reach the particle through this layer of ASR. The rate of polymerization decreased with increasing the neutralization degree of ASR. The aggregates with high neutralization of ASR are less efficient in solubilizing the monomer and capturing initiator radicals than that of the lower neutralization degree, which leads to decrease in rate of polymerization.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2012년도 학술발표회
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• pp.200-204
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• 2012

In engineering hydrology, an estimation of precipitation loss is one of the most important issues for successful modeling to forecast flooding or evaluate water resources for both surface and subsurface flows in a watershed. An accurate estimation of precipitation loss is required for successful implementation of rainfall-runoff models. Precipitation loss or hydrological abstraction may be defined as the portion of the precipitation that does not contribute to the direct runoff. It may consist of several loss elements or abstractions of precipitation such as infiltration, depression storage, evaporation or evapotranspiration, and interception. A composite loss rate model that combines four loss rates over time is derived as a lumped form of a continuous time function for a storm event. The composite loss rate model developed is an exponential model similar to Horton's infiltration model, but its parameters have different meanings. In this model, the initial loss rate is related to antecedent precipitation amounts prior to a storm event, and the decay factor of the loss rate is a composite decay of four losses.

• 한국항만경제학회:학술대회논문집
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• 한국항만경제학회 2006년도 국제학술대회
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• pp.253-276
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• 2006

This paper has shown the trend of competition positioning of 26 Korean ports in 1994, 1999, and 2003 by using BCG matrix which consists of relative market shares, growth rate of cargo handling, and also growth rate and CCR and BCC efficiency scores with scale efficiency scores in the vertical and horizontal axes. The empirical main results are as follows. First, Incheon Port, Pyungtag Port, Gwangyang Port, Busan Port, Pohang Port and Woolsan Port have shown their competitive positioning in terms of market share and growth rate. Second, Pyungtag Port, Wando Port, Tongyoung Port, Gohyun Port, Samcheog Port, and Okgae Port have their competitive positioning in terms of growth rate and scale efficiency scores. The main policy implication of this paper is to emphasize that BCG matrix method using in this paper can give seaport manager the basic information for planning the future port management for enhancing the competitive positioning among Korean seaports.