• 한국지반환경공학회 논문집
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• 제15권9호
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• pp.13-18
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• 2014

분뇨/정화조슬러지와 음식물폐기물의 병합소화 특성을 확인하기 위하여 BMP 테스트를 실시하였다. 생슬러지, 잉여슬러지, 소화슬러지, 분뇨/정화조슬러지(1:1의 비율로 조성), 음식물폐기물(음식물 파쇄물과 희석수의 비=1:1) 및 혼합슬러지의 6개의 슬러지를 대상으로 30일간 실험을 진행하였다. 바이오가스 발생은 초기 2일 이후부터 활발히 시작되어 2주 동안 지속되는 것을 알 수 있었으며 일정 시간이 경과한 후에는 발생량이 급격히 감소하는 것을 확인하였다. 특히 7~8일 사이에 가스발생량이 최대값을 보였으며, Modified Gompertz model을 이용한 생슬러지, 잉여슬러지, 소화슬러지, 분뇨/정화조슬러지, 음식물폐기물 및 혼합슬러지의 단위메탄생산량은 각각 64.63, 67.49, 66.45, 72.44, 107.85, 46.71 mL $CH_4/g$ VS로 나타났다. 혼합슬러지의 지체성장기간은 1.88 day이었으며, 최대메탄생산속도는 80.4 mL/day로 나타났다. 따라서 메탄생성퍼텐셜을 높이기 위해서는 하수처리장의 혐기성 소화조에 투입되는 음식물폐기물의 혼합비를 조절함으로써 빈부하 문제 해결과 동시에 소화조의 안정적인 운전을 기대할 수 있을 것으로 사료된다.

• 자원환경지질
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• 제54권5호
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• pp.505-513
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• 2021

21세기 들어 영국, 호주 등 해외에서도 대도시권의 주택가격 상승문제가 나타나고 있다. 이들 정부는 대도시 인근에 위치한 개발종료 채석장 부지를 택지로 적극 활용하여 주택부족 문제를 해소하고자 하고 있다. 본 연구에서 검토한 영국의 Erith Hill Quarry (The Quarry)나 Plymstock Quarry, 호주의 Lilydale Quarry (Kinley)와 Bombo Quarry는 모두 도시 계획적 제도를 통해 개발이 종료된 채석장을 주택, 상업 등 복합용도로 개발한 사례이다. 영국은 도시계획제도의 틀 안에서 Section 106이라는 계획허가 제도를 통해 지방정부가 개발종료 채석장 부지의 복합개발을 허가하는 대신 지역에 필요한 학교 등의 공공시설과 저렴한 주택을 공급하도록 하고 있다. 호주는 채석장의 토지이용을 산업에서 복합용도로 변경할 수 있도록 지방정부의 허가권한을 활용하고, 개발계획에 저렴한 주거 외에도 도시기반시설, 오픈 스페이스 등이 포함되도록 하고 있다. 특히, 호주의 사례에서 개발계획을 사전에 수립하고, 단계적 개발방식을 통해 상부 표토 및 표석을 채굴적을 메우는 충전재로 활용한 것은 사업비를 절감하는 효과도 있는 것으로 보인다. 영국과 호주 모두 개발종료 채석장 부지를 택지로 공급하는 것이 신규 녹지를 훼손하는 것보다 미래세대를 위한 지속가능한 친환경적 개발이라는 관점에서 바라보고 있다는 점에서 다소 경직된 우리의 도시개발 제도에 정책적 시사점을 제공할 수 있을 것으로 보인다.

• 한국주거학회논문집
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• 제20권1호
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• pp.113-122
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• 2009

In the work of contemporary spatialization, the meaning of program is being an important conceptual element beyond simple functional dimension. The design of this diagram allows to balance among changing programs, and it comes into the spotlight as a medium, which links the virtual to the reality as embodying the virtual, which is not embodied realistically, realistically through the design process. In other words, this method is attracting the public attention as a design tool which can concentrate on design process rather than a fixed tool. This study focuses on the role of balancing among mixed programs and the diagram as a design tool. Therefore, the purpose of this study is to analyze and research the work of spatialization, which apply to diagrams of contemporary designers, is to identify operating mechanism and then is to examine the characteristics and importance of them.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2005년도 추계종합학술대회
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• pp.1177-1180
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• 2005

This paper present a method of constructing the multimedia processor architecture. The proposed multimedia processor architecture be able to handle each text, sound, and video in one chip. Also it have interactive function that is a characteristics of multimedia. Specially, the proposed multimedia processor be able to addressing nodes in memory map without software, and it is completely reconfigurable depend on data. Also it as able to process time and space common that have synchronous/asynchronous and it is able to protect continuous and dynamic media bus collision, and local and overall common memory structure. The proposed multimedia processor architecture apply to virtual reality and mixed reality.

• Journal of Advanced Marine Engineering and Technology
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• 제17권3호
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• pp.42-49
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• 1993

Recently, because the lubricating oil showed a tendency to be emulsified and oxidized by high speed, high output and the extension of maintenance & conservation of marine engine, the cavitation erosion-corrosion at such an environment became a big problem on effective performance of engine. Therefore, there was a need to study the behavior and protection of erosion-corrosion damage, and then applied inhibitor to a protective method of cavitation erosion- corrosion damage. At this time, test environments were marine lubricating oil & various emulsified oil that mixed distilled water and sea water etc., and also used 20KHz, 24.mu.m piezoelectric vibrator as an experimental apparatus of cavitation erosion. With this apparatus, we investigated an influence of the emulsified oil on characteristics of erosion-corrosion and protection for erosion-corrosion by inhibitor at slide bearing metals.

• 자원환경지질
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• 제21권4호
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• pp.381-387
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• 1988

Maewol Feldspar Mine produces feldspar ore from pegmatites. K-Rb Age of muscovite is 137.7Ma. Fluid inclusions in quartz crystal of the pegmatite show bimodal distribution of homogenization temperatures. The high homogenization temperatures range from 290 to $302^{\circ}C$ while low homogenization temperatures range from 157 to $195^{\circ}C$. Three phases liquid $CO_2$ bearing inclusions indicate $CO_2$ gases were abundantly mixed with granitic melt until the pegmatic magma melt cooled to $290^{\circ}C$. Low density of the magmatic melt relative to the same volume of granitic magma is due to mixture of volatiles(mainly $CO_2$ gases) with the melt and larger space and slow cooling allowed to grow crystals of the pegmatic magma.

• 한국수학교육학회지시리즈B:순수및응용수학
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• 제23권1호
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• pp.35-51
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• 2016

We establish coincidence point theorem for g-nondecreasing mappings satisfying generalized nonlinear contraction on partially ordered metric spaces. We also obtain the coupled coincidence point theorem for generalized compatible pair of mappings F, G : X² → X by using obtained coincidence point results. Furthermore, an example is also given to demonstrate the degree of validity of our hypothesis. Our results generalize, modify, improve and sharpen several well-known results.

• 대한수학회지
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• 제37권6호
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• pp.1043-1057
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• 2000

This paper is devoted to the investigation of mixed Fourier-Bessel transformation (※Equations, See Full-text) We apply the method of [6] which provides the estimate for weighted L(sub)$\infty$-norm of the spherical mean of │f│$^2$ via its weighted L$_1$-norm (generally it is wrong without the requirement of the non-negativity of f). We prove that in the case of Fourier-Bessel transformatin the mentioned method provides (in dependence on the relation between the dimension of the space of non-special variables n and the length of multiindex ν) similar estimates for weighted spherical means of │f│$^2$, the allowed powers of weights are also defined by multiindex ν. Further those estimates are applied to partial differential equations with singular Bessel operators with respect to y$_1$, …, y(sub)m and we obtain the corresponding estimates for solutions of the mentioned equations.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 추계 학술발표회
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• pp.416-422
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• 2010

Estimating condition of geotechnical structures are difficult because of nonlinear time dependency and seasonal effects. Measuring data of structure failure is highly variable in time and space, and a unique approach cannot be defined to model structure movements. Characteristics of movements are obtained by using a statistical method called Principal Component Analysis(PCA). The PCA is a non-parametric method to separate unknown, statistically uncorrelated source processes from observed mixed processes. Instead, since the "best" mathematical relationship is estimated for given data sets of the input and output measured from target systems. As a consequence, this method is advantageous in modeling systems whose geomechanical properties are unknown or difficult to be measured.

• 한국실내디자인학회논문집
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• 제13권2호
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• pp.80-90
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• 2004

Scientism is a kind of paradigm since the birth of Modernism. Architectural design was also effected from scientism in the 1st Machine age, and being effected still In the End Machine age. But many architects in the 2nd Machine age express scientism in architectural design as a "science for kick" as SF. The design of Rem Koolhaas follows the line of Modernism which was effected from scientism in many ways. However he shows modified machine aesthetics as SF pataphysics mixed with literary imagination, and now shows new science paradigm in post-modern age. He expresses many new science theory like indeterminacy theory, chaos, catastrophe theory in his works. And those are expressed as indeterminate program that proceeds in non-linear way, rhizome in space, order out of chaos, topological metamorphosis as a catastrophe. This study analyzes the expression of scientism in architectural design of Rem Koolhaas since 1970s.nce 1970s.