• 한국인쇄학회지
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• 제6권1호
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• pp.13-39
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• 1988

Test colors are halftone dot printed at the rate of 10% halftone dot area by process inksblack, cyan, magenta and yellow ink. Reproduced colors are measured by the weighted-ordinate colorimetric method and the direct colorimetric method. The weighted-ordinate colorimetric method compare favorably with the direct colorimetric method, because the former has good regular changes of tristimuIus values, chromacity coordinates, excitation purities, value functions and has smaller errors of dominant and complementary wavelengths than the latter. All test colors classify with the Munsell renotation.tation.

• 대한수학회보
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• 제38권1호
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• pp.81-91
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• 2001

The expansion of a distribution of $K^r_M^r(R)$ in terms of regular orthogonal wavelets is considered. The expansion of a distribution of $K^r_M^r(R)$ is shown to converge pointwise to the value of the distribution where is exists.

• 대한수학회지
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• 제45권2호
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• pp.527-535
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• 2008

Sufficient conditions are given to assert that between any two Banach spaces over $\mathbb{K}$ Fredholm mappings share exactly N values in a specific open ball. The proof of the result is constructive and is based upon continuation methods.

• 대한수학회보
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• 제31권2호
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• pp.309-318
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• 1994

The approach presented in this paper is based on the transformation of the Stefan problem in one space dimension to an initial-boundary value problem for the heat equation in a fixed domain. Of course, the problem is non-linear. The finite element approximation adopted here is the standared continuous Galerkin method in time. In this paper, only the regular case is discussed. This means the error analysis is based on the assumption that the solution is sufficiently smooth. The aim of this paper is the existence of the solution in a finite Galerkin system of ordinary equations.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 추계학술대회
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• pp.945-949
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• 2003

In this paper, we present that now and heat transfer characteristics of oscillatory impinging jet which have been numerically investigated using parallel computations. Numerical value were obtained for dimensionless distance H=4, dimensionless outlet length L=45 and Reynolds number Re= 1500. It was found that the oscillatory impinging jet generated the regular heat transfer area even though the maximum heat transfer is lower than nonoscillatory impinging jet. We also found that heat transfer depends on the period of nozzle for the oscillatory impinging jet.

• Journal of applied mathematics & informatics
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• 제11권1_2호
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• pp.125-141
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• 2003

This paper treats the conditions for the existence and stability properties of stationary solutions of reaction-diffusion equations of Gierer-Meinhardt type, subject to Neumann boundary data. The domains in which diffusion takes place are of three types: a regular hexagon, a rectangle and an isosceles rectangular triangle. Considering one of the relevant features of the domains as a bifurcation parameter it will be shown that at a certain critical value a diffusion driven instability occurs and Turing bifurcation takes place: a pattern emerges.

• 충청수학회지
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• 제20권1호
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• pp.65-70
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• 2007

We study the existence of nontrivial solutions of the Gradient type Dirichlet boundary value problem for elliptic systems of the form $-{\Delta}U(x)={\nabla}F(x,U(x)),x{\in}{\Omega}$, where ${\Omega}{\subset}R^N(N{\geq}1)$ is a bounded regular domain and U = (u, v) : ${\Omega}{\rightarrow}R^2$. To study the system we use the liking theorem on product space.

• 대한조선학회지
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• 제13권2호
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• pp.1-12
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• 1976

Linearized motions of as axisymmetrical dock freely floating in a regular plane wave are discussed. An extension of the Bessho variational principle(Bessho[3]) is derived to obtain a numerical procedure for a solution of the boundary value problem associated with the fluid motion. The added mass and the damping coefficients for a circular dock in vertical(heave) and horizontal(surge) oscillations are evaluated numerically, and the resulte seems to be satisfactory.

• 헤리티지:역사와 과학
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• 제51권4호
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• pp.146-169
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• 2018

현행 문화재보호법은 인위적이거나 자연적으로 형성된 국가적 민족적 또는 세계적 유산으로서 역사적 예술적 학술적 또는 경관적 가치가 큰 것을 문화재로 정의하고, 문화재의 성격에 따라 유형문화재, 무형문화재, 기념물, 민속문화재로 구분하고 있다. 그리고 지정주체에 따라 시 도지사가 지정하는 시 도지정문화재 및 문화재자료와 문화재청장이 지정하는 국가지정문화재가있다. 국가지정문화재의 보존 관리 정책 중 하나인 정기조사는 문화재보호법에 따라 문화재의 현상, 관리, 수리, 그 밖의 환경보전 상황 등에 관하여 3년 또는 5년 주기로 조사하는 제도로 2006년 문화재보호법에 도입되어 현재까지 해당문화재의 훼손 손상등을 사전에 발견하고 적절한 예방조치를 취하는 등 국가지정문화재의 보존 관리에 기여한 바가 크다. 그런데 2016년 제정된 국가지정문화재 정기조사 운영지침의 일부내용은 국가지정 동산문화재 정기조사 운영에 혼란을 종종 발생시켜 국가지정 동산문화재 정기조사의 체계적 관리 및 품질 제고를 위한 수정과 보완이 필요하다. 이에, 본고는 국가지정문화재 정기조사제도의 체계와 구조, 국가지정 동산문화재 정기조사 운영실태 등을 분석한 후 국가지정 동산문화재 정기조사의 체계적 관리 및 품질 제고를 위하여 국가지정문화재 정기조사 운영지침상의 정기조사 총괄 주관 실시부서 특정, 정기조사 위탁, 정기조사 서식 및 매뉴얼의 개선방안을 제시하였다. 이들 개선방안이 향후 국가지정 동산문화재 정기조사의 품질 제고와 맞춤형 조사 기록체계 구축에 일조되기를 기대한다.

• 한국응용과학기술학회지
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• 제2권1호
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• pp.19-23
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• 1985

In order to know the quality changes of the fat and oil foods packed in plastics film by the sunlight, we examined the sunlight transmitting rate by the kind of films and measured the acid value and peroxide value according to it. The results obtained were as follows : 1. The sunlight transmitting rate of various films was explained especial permeability under the wavelength of less than 300nm, but it marked a regular form under that of more than 30nm. 2. The vacuum evaporation film with aluminum on the polyester shuts off most of the sunlight, therefore, it has the best effect that keeps the fats and oils off rancidity. 3. The sunlight transmitting rate of the white color printing film drops about 80% as compared with not printing. 4. The preventive power against the rancidity of fats and oils is PET/Al, PET, PE, nylon and OPP film in that order. The changes of peroxide value and acid value were approximately the same as that of the sunlight transmitting rate.