• 한국도서관정보학회지
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• 제30권1호
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• pp.61-92
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• 1999

이 연구는 1990년 이전에 설립된 90개 4년제 대학을 대상으로 대학도서관의 11개 내외적 구성요소와 지원수 간의 중다상관관계를 분석하고, 이를 근거로 중다회귀분석기법과 사서직원 대 비사서직원의 구성비율을 이용하여 우리나라 실정을 고려한 사서직원 수와 전체직원 수의 산출공식 모형안을 제시한 것이다. 이 연구의 결과로 도출된 직원 수 산출공식 모형은 다음과 같다. (1) 사서직원 수 = 3.016+0.0l6x총 장서수(단위 : 천권) -0.008x연간증가책수(단위 : 백권)+0.031x대학원등록학생수(단위 : 십명)+0.069x마부등록하생수(단위 : 백명)+0.093x자료구입비(단위 : 천만원). (2) 전체직원 수 = 4.638+0.024x총장서수(단위 : 천권) -0.012x연간증가책수(단위 : 백권)+0.047x대학원등록학생수(단위 : 십명)+0.106x학부등록학생수(단위 : 백명)+0.066x자료구입비(단위 : 천만원).

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 1997년도 춘계학술발표회논문집(2)
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• pp.515-519
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• 1997

The purpose of this study is to reduce the fast neutron fluence at the reactor pressure vessel(RPV) and to provide a basis for plant-life extension. In this study, different neutron absorbers were employed in the core outer assemblies of Kori Unit 1 Cycle 14. The modified assemblies were used to calculate fast neutron fluence at the RPV and to evaluate reduction of outer assembly power and total power in core. By comparison with the case of no suppression fixture, the fast neutron fluence of a case with two rows stainless steel around the assembly with natural uranium pins is decreased by 85.8%. It is noted that the modification of outer assembly is more efficient than the previous low leakage loading pattern (LLLP) applied to Kori Unit 1. Also, compared fast neutron fluence in Cycle 1 with Cycle 14, fast neutron fluence at the RPV between Cycle 1 and Cycle 14 is not significantly different. It is found that LLLP applied to the Kori Unit 1 has not contributed to fast neutron fluence reduction at the RPV.

• 한국멀티미디어학회논문지
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• 제15권4호
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• pp.485-491
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• 2012

본 논문은 움직임 벡터와 함께 Coding Unit (CU)의 분할 정보를 표현하기 위해 쿼드트리 기반의 Coding Unit Tree (CUT)를 제안한다. 새로운 동영상 국제 표준안인 High Efficiency Video Coding (HEVC)는 높은 압축 효율을 위해 다양한 새로운 기술들을 채택하였다. 그리고 CU, prediction Unit (PU), 와 Transform Unit (TU)라는 분할 개념을 도입하였다. 그중 기본 부호화 단위인 CU는 H.264/AVC의 매크로 블록보다 다양한 크기를 제공하며 계층적인 구조를 가지고 있으며 쿼드트리 기반의 영상을 분할하고 처리한다. 이러한 구조는 유연성과 최적화를 이룰 수 있는 기반을 제공하고 있으나, 분할 정보에 대한 오버헤더가 발생한다. 복잡한 움직임 정보가 발생하면, 해당하는 정보를 전송하기 위해 다양한 신호가 발생한다. 본 논문에서는 이러한 다양한 신호들을 분석하고, 중복되는 정보를 제거하기 위한 알고리즘을 제안한다. 제안하는 알고리즘 은 기본 블록인 $2{\times}2$ 블록을 기준으로 계층적인 구조를 제안한다. 제안하는 알고리즘은 쿼드트리 기반의 타입 코드로 영상을 구조를 나타내고, 대표 값과 잔여 값으로 각 노드의 값을 표현한다. 결과에서 제안하는 알고리즘이 HM1.0보다 13.6% 압축 향상을 보여준다.

• 한국주거학회논문집
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• 제21권1호
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• pp.53-65
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• 2010

Apartment buildings represent the most typical patterns of housing in Korea. The present plans are very different from the previous ones when they appeared for the first time. Although apartment unit plans has changed drastically, they can be classified into several categories. Apartment unit plans reflects the demands of living activities and space dimensions of unit plans have the characteristics of diachronic continuity and carry the values of living culture. Thus this study aims to provide the statistical dimensional data of each room that can be actually used for the design of unit plans by sub-grouping typical unit plans. The statistical data of this study showed that apartment unit plans are shifting from 2bay/3room type to 3bay/3room type in 1990s. It is very peculiar that the typical unit plan of $60\;m^2$ area becomes to resemble that of $85\;m^2$ area. The space arrangement of typical unit plans of both $60\;m^2$ and $85\;m^2$ area is almost identical while only their space dimensions differ slightly. As the mean/mode/median values of space dimensions in a typical unit plan are converging into a range of narrow margin, space dimensions of typical unit plan are contended to be strictly regular. The statistical numeric data of various space dimensions provided in this paper can be applied practically to the design of apartment unit plans for low income class people who are disprivileged in the society.

• 한국주거학회논문집
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• 제18권5호
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• pp.11-22
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• 2007

The purpose of this study is to propose prototypical plans for a dwelling unit applying the concepts of 'open housing' and 'aging in place' for senior citizens living in cities focusing on specific life patterns with chronic disease. Especially, a unit was designed for diabetes patients because diabetes, a representative disease of elderly people, often accompanies complications such as arthritis and Alzheimer disease. A unit design suitable for the convenient life of the elderly people with diabetes will provide a guideline for the similar unit designs of the senior citizens with other diseases. In this study, three types of unit plan are proposed. A-type plan is for type-1 diabetes patients, B-type alt.1 for the independent seniors of type-2 diabetes patients, and B-type alt.2 for the dependant seniors of type-2 diabetes patients. And a support design for a unit plan with the exclusive area of $60\;m^2$ is proposed. The same support design is used for all three unit types. Although the locations of bathroom and storage room are fixed and the location of the kitchen is changeable only in wet-zone. In conclusion, senior residents with diabetes can choose one of three unit types before occupation and the chosen unit type can be renovated by replacing infill systems as the health condition or life style changes.

• Restorative Dentistry and Endodontics
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• 제27권5호
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• pp.488-492
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• 2002

The purpose of this study was to evaluate the effectiveness of plasma arc curing (PAC) unit for composite and compomer curing. To compare its effectiveness with conventional quartz tungsten halogen (QTH) light curing unit, the polymerization shrinkage rates and amounts of three composites (Z100, Z250, Synergy Duo Shade) and one compomer, that had been light cured by PAC unit or QTH unit, was compared using a custome made linometer. The measurement of polymerization shrinkage was peformed after polymerization with either QTH unit or PAC unit. In case of curing with the PAC unit, the composite was light cured with Apollo 95E for 6s, the power density of which was recorded as 1350 mW/$\textrm{cm}^2$ by Coltolux Light Meter. For light curing with QTH unit, the composite was light cured for 30s with the XL2500, the power density of which was recorded as 800 mW/$\textrm{cm}^2$ by Coltolux Light Meter. The amount of linear polymerization shrinkage was recorded in the computer every 0.5s for 60s. Ten measurements were made for each material. The amount of linear polymerization shrinkage for each material in 10s and 60s which were cured with PAC or QTH unit were compared with t test. The amount of polymerization shrinkage in the tested materials were compared with 1way ANOVA with Duncan's multiple range test. As for the amounts of polymerization shrinkage in 60s, there was no difference between PAC unit and QTH unit in Z250 and Synergy Duo Shade. In Z100 and Dyract AP, it was lower when it was cured with PAC unit than when it was cured with QTH unit (p<0.05). As for the amounts of polymerization shrinkage in 10s, there was no difference between PAC unit and QTH unit in Z100 and Dyract AP. The amounts of polymerization shrinkage was significantly higher when it was cured with PAC unit in Z250 and Synergy Duo Shade (p<0.05). The amounts of polymerization shrinkage in the tested materials when they were cured with QTH unit were Z250 (6.6um) < Z100 (9.3um), Dyract AP (9.7um) < Synergy Duo Shade (11.2um) (p<0.05). The amount of polymerization shrinkage when the materials were cured with PAC unit were Dyract AP (5.6um) < Z100 (8.1um), Z250(7.0um) < Synergy Duo Shade (11.2um) (p<0.05).

• 한국동물학회:학술대회논문집
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• 한국동물학회 1998년도 한국생물과학협회 학술발표대회
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• pp.288.1-288
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• 1998

No Abstract, See Full Text

• Journal of Microbiology and Biotechnology
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• 제9권1호
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• pp.9-21
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• 1999

• Journal of the Korean Statistical Society
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• 제36권1호
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• pp.149-156
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• 2007

This study suggests a new method for testing seasonal unit roots in a momentum threshold autoregressive (MTAR) process. This sign test is robust against heteroscedastic or heavy tailed errors and is invariant to monotone data transformation. The proposed test is a seasonal extension of the sign test of Park and Shin (2006). In the case of partial seasonal unit root in an MTAR model, a Monte-Carlo study shows that the proposed test has better power than the seasonal sign test developed for AR model.

• 대한수학회보
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• 제47권3호
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• pp.541-549
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• 2010

In this paper we derive an integral formula on an (n + 1)-dimensional, compact, minimal contact CR-submanifold M of (n - 1) contact CR-dimension immersed in a unit (2m+1)-sphere $S^{2m+1}$. Using this integral formula, we give a sufficient condition concerning with the scalar curvature of M in order that such a submanifold M is to be a generalized Clifford torus.