• Journal of the Korea Concrete Institute
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• v.17 no.6 s.90
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• pp.939-946
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• 2005

The stiffness properties of heterogeneous concrete materials and their degradation were investigated at different-levels of observations with aids of the opportunities and limitations of multi-resolution wavelet analysis. The successive Haw transformations lead to a recursive separation of the stiffness properties and the response into coarse-and fine-scale features. In the limit, this recursive process results in a homogenization parameter which is an average measure of stiffness and strain energy capacity at the coarse scale. The basic concept of multi-resolution analysis is illustrated with one and two-dimensional model problems of a two-phase particulate composite representative of the morphology of concrete materials. The computational studies include the meso-structural features of concrete in the form of a hi-material system of aggregate particles which are immersed in a hardened cement paste taking due to account of the mismatch of the two elastic constituents.

• 발명특허
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• v.36 no.10
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• pp.65-68
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• 2011

• KDI Journal of Economic Policy
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• v.15 no.2
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• pp.89-120
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• 1993

대북투자(對北投資)는 남북경제(南北經濟)의 동질화(同質化)를 촉진시켜 궁극적으로 경제통합(經濟統合)에 기여할 뿐만 아니라 남북한(南北韓) 산업구조조정(産業構造調整) 문제(問題)의 해결에 활용함으로써 남북한 모두에게 큰 도움을 줄 수 있다. 북한(北韓)은 언젠가는 반드시 진출하여야 하는 숙명적(宿命的)인 시장(市場)이라는 점에서 전략적(戰略的) 투자가치(投資價値)가 크며, 비교적 양질(良質)의 저렴한 노동력(勞動力)과 최근 지속되고 있는 투자법제(投資法制)의 개선노력(改善努力) 등을 감안할 때 상당한 투자매력이 있다. 그러나 시장성(市場性)의 제약(制約), 열악(劣惡)한 사회간접자본(社會間接資本), 체제경직성(體制硬直性)에 기인한 기업경영(企業經營) 불안정(不安定) 등 투자위험(投資危險)도 매우 크므로 투자위험을 최소화하면서 남북경제의 동질화에 기여할 수 있는 투자방안(投資方案)을 모색하여야 할 것이다.

• Product Safety
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• s.104
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• pp.68-77
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• 2002

지난 7월 12일(금) 산업자원부 신환국 장관 주재로 산업기술진흥회의가 개최되었다. 이날 회의는 95년 WTO출범 이후 Global Market이 출현하면서 세계시장은 Global Standards시대로 진입하여 세계 경제환경은 무역, 기술, 표준이 서로 영향을 미치는 융화합 단계로 급진전하였고 아울러 세계시장의 통합화에 따른 무역상기술장벽(TBT : Technical Barriers to Trade)제거를 위한 기술표준의 동질화가 심화되고 있다. 이에

• The Korean Journal of Ecology
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• v.18 no.4
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• pp.513-513
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• 1995

The central theme of Habital heterogeneity is to provide animals with habital complexity or structural diversity and to allow resource partitioning among individuals. In turn, the leads to population stability because prey can escape more easily with more hiding places causing less population fluctuation. Species diversity is characterized due to more potential niches both horizontally and verticall. Empirically, in homogeneous habitats population was less abundant, reproduction and survival were lower, spacing behavior, competition and dispersal were higher than in heterogeneous habitats. The results imply that diversity and conservation of species can be maintained through providing heterogeneous habitats.

• 전기의세계
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• v.24 no.4
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• pp.71-72
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• 1975

A formalism of reference language and homogeneous field is constructed for Iverson Language to organize a virtual file among external media. To execute some data manipulations among these external media files must be organized homogeneously forming multi-dimensional array like single media. This paper shows some organization of reference language to build the virtual file using many external media and some examples of program and hardware organization is presented for the justification of proposals.

• Electronics and Telecommunications Trends
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• v.20 no.6 s.96
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• pp.144-155
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• 2005

현재 중국의 인터넷 종합 포털 사이트 시장은 서비스 면에서 동질화 경쟁이 매우 치열해 새로운 수익모델을 개발해야 할 필요성이 증가하고 있다. 포털 시장은 향후 세분화 추세를 보일 것으로 추정되긴 하나, 구체적인 경쟁구도는 아직 불분명한 상태이다. 본 보고서에서는 2005년 상반기까지 나타난 중국 인터넷 시장의 사용현황 및 포털 시장분석을 통하여 중국 인터넷에 나타난 주요 변화와 주요 포털 의 경쟁력 분석 및 중국 인터넷 포털 시장에 대한 객관적인 평가를 시도해 보고자 한다.

• Korean journal of food and cookery science
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• v.20 no.3
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• pp.317-334
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• 2004

슬로 푸드는 대량생산과 규격화, 산업화, 기계화를 통한 맛의 표준화와 전 지구적 미각의 동질화를 지양하고 나라별, 지역별, 특성에 맞는 전통적이고 다양한 음식과 식생활 문화를 계승 발전시킬 목적으로 1986년부터 이탈리아의 작은 마을에서 시작된 식생활 운동이다. 그러나 1990년대 세계적으로 불어닥친 광우병 파동과 함께 슬로 푸드 운동은 단지 미각의 문제에서 벗어나 유기농 문제 등으로 관심의 폭이 넓혀졌다. 나아가 생활 속에서 여유를 찾아 느리게 살기 슬로라이프(slow life) 운동으로까지 이어졌다. 그래서 슬로 푸드 운동은 느림의 상징인 달팽이를 심벌 마크로 하고 있다.(중략)

• Journal of the Korea Concrete Institute
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• v.18 no.2 s.92
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• pp.189-198
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• 2006

The composition of most engineering materials is heterogeneous at some degree. It is simply a question of scale at which the level of heterogeneity becomes apparent. In the case of cementitious granular materials such as concrete the heterogeneity appears at the mesoscale where it is comprised of aggregate particles, a hardened cement paste and voids. Since it is difficult to consider each separate particle in the topological description explicitly, numerical models of the meso-structure are normally confined to two-phase matrix particle composites in which only the larger inclusions are accounted for. 2-D and 3-D concrete blocks(Representative Volume Element, RVE) are used to simulating heterogeneous concrete meso-structures in the form of aggregates in the hardened mortar with nearly zero-thickness linear or planar interfaces. The numerical sensitivity of these meso-structures are Investigated with respect to the different morphologies of heterogeneity and the different level of coupling constant among fracture mode I, II and III. In addition, a numerically homogenized concrete block in 3-D using Hashin-Shtrikman variational bounds provides an evidence of the effective cracking paths which are quite different with those of heterogenous concrete block. However, their average force-displacement relationship show a pretty close match each other.

• The Journal of the Korea Contents Association
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• v.14 no.5
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• pp.30-43
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• 2014

The number of online video content distributors are rapidly increasing in N-screen environment. The purpose of this study is to analyze the business model of these distributors, especially Netflix and Hulu. Basis on STOF model, environmental domain, service domain, organization domain and financial domain of each company are analyzed and compared. This study finds that each company's business model had distinct characters in earlier stage. Netflix offered online and offline service in low cost, while Hulu offered up-to-date TV contents without fees. However, two companies' business models are getting similar. The result of this study shows that highly competitive environment and increasing content budget affect two companies to adopt similar business model to survive.