• Asian-Australasian Journal of Animal Sciences
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• 제15권6호
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• pp.767-771
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• 2002

Breeding efficiencies were compared among three population schemes: a single population, a population with two subpopulations and a population with three sub-populations. A simulation experiment of selection was carried out for 10 generations with 20 replications each by comparing average breeding values and inbreeding coefficients among the three population schemes. Phenotypes of three traits were generated with a model comprising 36 loci, each with additive genetic effects and residuals distributed normally. Among the three population schemes, the single population scheme was definitely superior to the other two with regards to selection response and inbreeding. The multiple sub-population scheme was, however, considered to be an alternative population scheme when the difference in economic weights of the traits was small among the sub-populations, assuming moderate inbreeding depression for traits and crossbreeding. The scheme with two sub-populations had a higher genetic value than that with three subpopulations; however, the genetic values of the schemes were comparable when maternal heterosis was taken into account. The choice of population schemes may depend on the cost-sharing policy between the breeding population and the commercial population rather than just the breeding efficiency.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회(2)
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• pp.1457-1457
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• 2005

• 한국의상디자인학회지
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• 제11권2호
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• pp.1-10
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• 2009

The purpose of this study is to investigate harmonious color schemes based on a length proportion of upper and lower parts of a body by; understanding of the harmonious length proportion of a square measure of a color in color coordination of fashion design, and presenting a mutual relation of the length proportion of a square measure of a color according to the various way of color schemes and proportions. For this study, monochromatic scheme, analogous scheme and complementary scheme were adapted as the color schemes, and each color scheme was coordinated by analogous tone and contrast tone. Also, 1:1 symmetry proportion, 1:2 harmonic proportion, 1:1.618 golden section, 1:3 and 1:5 contrast proportion were used as the square measure of a color. For the survey, 12 sets of color sample were organized. The survey was conducted 182 of university students majored in fashion design, and 143 responded samples were analyzed using SPSS 12. The result of the study is as follows: 1:5 contrast proportion is most inharmonious in general, and 1:1 symmetry proportion is followed. It is thought that too much or same length of the square measure of colors has less attractive effect of coloring. On the other hand, 1:1.618 golden section and 1:2 harmonic proportion are accepted to be harmonious in all color schemes. The length proportion of the square measure of a color had more influence on harmony of color coordination in fashion design rather than color schemes. Though, on the assumption that people have a similar perception about the color image of fashion design, it will play an important role in strengthening or diminution of color in cloth if the coloring effect of the length proportion of the square measure of a color is used in fashion design and wearing of clothes.

• 수도
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• 통권12호
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• pp.30-32
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• 1977

이 글은 국제수도협회(International Water Supply Assciation)에서 발행하는 AQUA에서 발췌 번역한 것으로 필자는 스위스 쮜리히시 수도국장 쌸레캄프씨(M.Schalekamp, Direktor, Wasserversorgung Zurich)이다.

• East Asian mathematical journal
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• 제29권1호
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• pp.39-52
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• 2013

Let (X, S) be an association scheme where X is a finite set and S is a partition of $X{\times}X$. The size of X is called the order of (X, S). We define $\mathcal{C}$ to be the set of positive integers m such that each association scheme of order $m$ is commutative. It is known that each prime is belonged to $\mathcal{C}$ and it is conjectured that each prime square is belonged to $\mathcal{C}$. In this article we give a sufficient condition for a scheme of order pq to be commutative where $p$ and $q$ are primes, and obtain a partial answer for the conjecture in case where $p=q$.

• 융합보안논문지
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• 제3권3호
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• pp.75-80
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• 2003

one-way 함수는 패스워드와 같이 compute는 쉽고 invert는 어렵다는 의미를 갖는 함수로서 암호기법에서 매우 중요한 역할을 하고 있으며, 특히 encryption schemes 의 존재성은 바로 one-way 함수의 존재성을 필요로 하고 있음은 잘 알려진 사실이다. 본 연구에서는 기존 암호기 법에 존재하는 one-way 함수들을 분석하고 또한 one-way 함수가 될 수 있는 여러 가지 형태의 함수들을 조사 연구함으로써 다양하고 안전한 encryption schemes을 갖추기 위한 근원을 제공한다. one-way 함수의 종류, 역할과 그 특성을 살펴보고 one-way 함수의 일반적인 조건을 통하여 one-way 함수가 될 수 있는 여러 가지 함수들을 조사하고, one-way 함수와 trapdoor 함수에 대한 이론적 특성을 논하였다.

• 게임&엔터테인먼트 논문지
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• 제2권1호
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• pp.56-63
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• 2006

본 논문에서는 시나리오의 확장 양상에 대한 기초 연구로서 시나리오에 내재된 구술성과 문자성을 먼저 다루고 있다. 그리고 문자 문명으로 규정되어진 구텐베르크 은하계의 여러 사항을 검토하면서 시나리오의 특이성과 잠재력을 파악하였다. 이에 덧붙여 선행하는 연구 관점을 기초로 해서 시나리오의 여러 특성들을 시각문화 속의 영상적 글쓰기와 인터넷 기반의 디지털 스토리텔링과 연계시키고, 디지털 영상 콘텐츠 시대에 있어서 시나리오의 중요성과 위상을 세우기 위한 새로운 시나리오 형식과 창작 환경을 위한 다양한 지원 방안들을 제시하였다. 본 논문의 목적은 국가적 차원에 있어서 전문대학원 체제나 스토리와 시나리오 전문 진흥기관 등과 같은 시나리오 개발 체제를 위한 지원 방안들과 시나리오 은하계를 특별히 강조하였다.

• 통상정보연구
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• 제10권2호
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• pp.305-323
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• 2008

Climate change is one of the broadest and the most complex issues of international environmental cooperation. Concern about climate change has been steadily increasing and has become a worldwide issue. According to IPCC(Intergovernmental Panel for Climate Change)'s recently report, global warming has accelerated vest serious problems. GHG(Green House Gas) emissions trading schemes, including the Kyoto mechanism that spread to solving the problems. Based on the evaluation on GHG emissions trading schemes, we also find some policy implications on the future development of emissions trading the conventional air pollutants in Korea which start to 2007. The regulatory authority needs to make clear how to allocate allowances to new entrants and also to keep the balance between the opportunity costs of reduction between potential shutdown facilities and new entrants. Under the current rule that does not allow shutdown credits, an equivalent level of allowances needs to be allocated to new entrants free of charge. We believe our policy recommendations may be useful not only for Korea but also for a the other countries, since they are facing a similar policy environment as Korea, particularly in the case of climate change.

• 한국제4기학회지
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• 제24권1호
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• pp.1-10
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• 2010

The Indian summer monsoon behaved an abnormal way in 2002 and as a result there was a large deficiency in precipitation (especially in July) over a large part of the Indian subcontinent. For the study of deficient monsoon of 2002, a recent version of the NCAR regional climate model (RegCM3) has been used to examine the important features of summer monsoon circulations and precipitation during 2002. The main characteristics of wind fields at lower level (850 hPa) and upper level (200 hPa) and precipitation simulated with the RegCM3 over the Indian subcontinent are studied using different cumulus parameterization schemes namely, mass flux schemes, a simplified Kuo-type scheme and Emanuel (EMU) scheme. The monsoon circulation features simulated by RegCM3 are compared with the NCEP/NCAR reanalysis and simulated precipitation is validated against observation from the Global Precipitation Climatology Centre (GPCC). Validation of the wind fields at lower and upper levels show that the use of Arakawa and Schubert (AS) closure in Grell convection scheme, a Kuo type and Emanuel schemes produces results close to the NCEP/NCAR reanalysis. Similarly, precipitation simulated with RegCM3 over different homogeneous zones of India with the AS closure in Grell is more close to the corresponding observed monthly and seasonal values. RegcM3 simulation also captured the spatial distribution of deficient rainfall in 2002.

• 융합보안논문지
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• 제15권7호
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• pp.85-96
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• 2015

보안로그의 활용범위가 다양해짐에 따라 저장된 로그 데이터에 대한 무결성의 중요성이 높아지고 있다. 특히, 저장된 로그 데이터는 시스템에 침입한 공격자들이 자신의 흔적을 없애기 위해 우선적으로 조작되는 대상이다. 키 정보가 노출이 된 이후의 로그 데이터의 안전성은 보장하지 못하지만, 그 이전에 축적된 로그 데이터 무결성의 전방 안전성을 보장하는 다양한 이론적 기법들이 소개되었다. 본 논문에서는 기존기법들의 특성을 분석하며, 계산 효율적인 측면에서의 비교분석을 통해 적용될 운영환경에 적합한 기법들의 유효성을 확인한다.