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김경훈 한국비쥬얼디자인학회 1999 한국디자인포럼 Vol.4 No.-
In the 21st century knowledge-and-information-oriented age, individual diversity is emphasized, and information acquisition and consumption levels are heightened. This trend of the times refuses to accept the mass production system centering around the competition in price. In consequence, inevitably does come the age of value created in which quality goods are produced by the multikind and small quantitiy production system. Design along with information and communication as 21st century knowledge-based business is gaining ground as a main factor national competitiveness is dependent upon in this age. Accordingly, the purpose of this study is to analyze the process and realities of the establishment of a firm specialized in venture design, both one of knowledge-based business and one factor which decides whether in the knowledge-and-information-oriented age, the millennium, our country will gain ground as one of the leading countries in the world or it will set in the west just like the twilight of the 20th century, and try to pave the way to promote the establishment of design venture required by this age. In a knowledge-based economic society, working methods are more important than working hours, and technical knowledge is more important than general knowledge. Desire for self-achievement is to be stronger than unilateral sense of loyalty to an organization. For the country in which there are many men of great originality who can enhance value added through incessant self-improvement, self-development and self -reformation can secure competitiveness among nations in the upcoming century.
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Lq(Lp)-THEORY OF PARABOLIC PDEs WITH VARIABLE COEFFICIENTS
김경훈 대한수학회 2008 대한수학회보 Vol.45 No.1
Second-order parabolic equations with variable coecientsare considered on Rd and C¹ domains. Existence and uniqueness resultsare given in Lq(Lp)-spaces, where it is allowed for the powers of summa-bility with respect to space and time variables to be dierent.
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공연예술연습공간으로 리모델링된 청주 연초제조창 동부창고의 음향특성
김경훈,김재수 한국문화공간건축학회 2016 한국문화공간건축학회논문집 Vol.- No.54
Aged idle public facilities have recently been neglected, empty, in urban areas, causing social problems. So the central and local governments have tried to remodel such spaces into performing arts practice spaces with the objective of improving local culture and arts and forming cultural communities. However, lack of data concerning changes and improvement in acoustic performance after remodeling is causing lots of difficulty at the stages of design and construction. From this perspective, this study aimed to assess post-remodeling changes of space elements and finished materials and improvement in acoustic performance of the East Warehouse in Cheongju Tobacco Center recently remodeled into a performing arts space. The reverberation time at 500Hz before remodeling was 3.5 seconds, causing acoustic defects due to excessive reverberation. Then, the improvement in absorption power and room constant with the changes of the space elements and finished materials at the stage of remodeling led to a significant decrease in reverberation time after remodeling: 1.13 seconds for the main practice room and 0.21-0.3 second for the remaining three spaces. Therefore, acoustic performance appropriate for multi-purpose space to hold performances, lectures, and diverse events was secured for the main practice room after remodeling: SPL (dB(A)) 76.5 dB(A), SPL at 500Hz 66.7 dB, D50 51.7%, C80 3dB, and RASTI 60.8% (“Good”). The remaining three spaces were also remodeled into performing arts practice spaces appropriate for practicing speech and movements for plays or dances: SPL (dB(A)) 81.6-83.7 dB(A), SPL at 500Hz 69.4-72.1 dB, D50 93.3-97.4%, and RASTI 80-86% (“Excellent”). It was therefore possible to remodel the east warehouse of the Cheongju Tobacco Center, which had been neglected, into a multi-purpose space and performing arts practice space and provide local residents and cultural groups with a cultural space appropriate for performance and practice for diverse genres.
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김경훈,임성빈 대한수학회 2016 대한수학회지 Vol.53 No.4
Let $p(t,x)$ be the fundamental solution to the problem $$ \partial_{t}^{\alpha}u=-(-\Delta)^{\beta}u, \quad \alpha\in (0,2), \, \beta\in (0,\infty). $$ If $\alpha,\beta\in (0,1)$, then the kernel $p(t,x)$ becomes the transition density of a L\'evy process delayed by an inverse subordinator. In this paper we provide the asymptotic behaviors and sharp upper bounds of $p(t,x)$ and its space and time fractional derivatives $$ D_{x}^{n}(-\Delta_x)^{\gamma}D_{t}^{\sigma}I_{t}^{\delta}p(t,x), \quad \forall\,\, n\in\mathbb{Z}_{+}, \,\, \gamma\in[0,\beta],\,\, \sigma, \delta \in[0,\infty), $$ where $D_{x}^n$ is a partial derivative of order $n$ with respect to $x$, $(-\Delta_x)^{\gamma}$ is a fractional Laplace operator and $D_{t}^{\sigma}$ and $I_{t}^{\delta}$ are Riemann-Liouville fractional derivative and integral respectively.
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김경훈 서울産業大學校 1996 논문집 Vol.43 No.1
The (subjective) complement in the school grammar is recognized only in the from of subject case-marker with nominal expressions. In traditional grammar the distribution of adverbs or adverbial clauses is usually determined mainly by the modification relation. Have it is argued against this, because some of adverbs actually used as a complement in Korean in meaning. Even the school grammar understands that some adverbs should be dealt as obligatory element, but it insists on its principle that the subject related one, the subjective complement must be appeared in the subject case-marker with the nominative. The writer argues that some obligatory adverbials must be classified as a complement.
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