• Journal of Arbitration Studies
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• v.14 no.1
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• pp.315-344
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• 2004

Although we try to increase the order of turn key construction for the international competitiveness strengthening, the construction quality advancement and the productivity enhancement of the public sectors, the problems of the domestic turn key systems are causing the hardships of all the participants and many possible disputes. The home turn key constructions have been activated since 1997. A lot of trial and error had been experienced in these days, and the turn key systems have been changed little by little. But the bases are continuously kept because of their reflecting all the participants' opinions. In the inner turn key constructions the problems of uniform types are repeatedly occurred, and, especially, many problems happen up to the stage of early stage owing to the specialties of the turn key construction. So the dispute factors of the Korean turn key constructions were abstracted through the literature searches, the site document examinations, the case studies and the interviews with the experts. When the technicians meeting the interior turn key construction for the first time and working here now are well acquainted with only these factors, many disputes will be prevented.

• East Asian mathematical journal
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• v.29 no.4
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• pp.355-392
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• 2013

Generally school algebra is to start with introducing variables and algebraic expressions, which have major cognitive obstacles to students in the transfer from arithmetic to algebra. But the recent studies in the teaching school algebra argue the algebraic thinking from an early algebraic point of view. We compare the Korean elementary mathematics textbooks with Americans from this perspective. First, we discuss the history of school algebra in the school curriculum. And Second, we investigate the recent studies in relation to early algebra. We clarify the goals of this study(the importance of early algebra in the elementary school) through these discussions. Next we examine closely the number sense in the arithmetic and the symbol sense in the algebra. And we conclude that the operation sense can connect these senses within early algebra using the algebraic thinking. Finally, we compare the elementary mathematics books between Korean and American according to the components of the operation sense. In this comparative study, we identify a possibility of teaching algebraic thinking in the elementary mathematics and early algebra can be introduced to the elementary mathematics textbooks from aspects of the operation sense.

• Geotechnical Engineering
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• v.10 no.3
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• pp.17-32
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• 1994

To model the anisotropic behavior of soils in the case of reverse loading, an anisotropic hardening description is proposed on the basis of generalized isotropic hardening(GIH) rule. There is a core of the GIH rule in the allowance of the concept that the center of homology of isotropic hardening can be any proper stress states inside a yield surface. The plastic deformations could be represented for the condition of reverse loading, and an explicit constitutive relationship was formulated by utilizing a simple hardening function. The proposed hardening description has been compared with other anisotropic hardening models. For verification three sets of triaxial test results have been predicted for the drained and undrained behavior of overconsolidated clays and Ko consolidated clays.

• Journal of the Korean Institute of Landscape Architecture
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• v.24 no.2
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• pp.62-73
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• 1996

본 연구는 환경예술운동의 선구자격이며 가장 대표적인 작가로 평가되는 로버트 스미슨의 작품에 대한 연구를 통해 그의 경관미학의 개념화에 대하여 고찰해 보고자 하였으며 궁극적으로 본 연구가 환경예술운동이 현대 조경설계에 미친 영향에 대한 기초 연구라는데 본 논문의 의의를 찾고자 한다. 스미슨의 작품이 조경에서 다루는 경관의 여러 가지 관점을 다루었으며, la국을 중심으로 조경설계에서 공간의 시각적 표현을 시도한 몇몇 조경설계가의 작품배경 또한 환경예술로 불리어지는 일련의 작품군과 작가의 주장에 많은 영향을 받았음에도 불구하고 그의 작품이 조경분야에서 연구의 대상으로 활발하게 다루어지지 못한 것도 사실이다. 본 연구에서는 스미슨의 경관미학의 개념화를 그의 작품을 통해 살펴보았으며, 스미슨의 작품과 조경설계와의 연관성, 그리고 현대 조경설계에 미친 스미슨의 공헌등을 조명해 보았다. 스미슨의 초기작품들은 개발로 인한 환경 및 경관의 남용 혹은 황폐화에 대한 비평적인 관점을 예술적 형태로 묘사한 반면, 후기 작품들에서는 환경 및 경관에 대한 예술적인 조작에 긍정적인 가치를 부여하고자 한 것이었다. 스미슨의 작품이 현대 조경에 미친 가장 큰 공헌은 무엇보다도 경관 및 환경의 변화에 영향을 미치는 수단으로서 예술을 활용했다는 것일 것이다. 환경예술가들의 주장과 그들의 작품이 현대 조경설계에 구체적으로 어떻게 형상화되었는지에 대한 연구는 앞으로 규명되어야 할 부분이라고 판단된다.

• Korean Institute of Interior Design Journal
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• v.14 no.3 s.50
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• pp.73-83
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• 2005

Recently, by the expansion of Industrial Capitalism and the development of Information Technology, the qualify of humans' life came to have various aspects. In this era of variety, among all the different attempts Rem Koolhaas(OMA)'s architectures attract attention for their architecture's new point of view in architectural design. On the basis of the objective fact in the modern world, as a construction which expresses the language naturally, and a democratic architecture of a faithful part for the whole, these kinds of approach shows the similarity and the properties of Neue Sachlichkeit which has appeared in the colloquy and photographs in Germany at the end of the 20th century in the past. The main purpose of this study is to recognize the understanding and development of Neue Sachlichkeit's properties in architecutre - the Neue Sachlichkeit's influence on the architecture from elementerism, Constructivsit International, ABC Group and Holland's 'the De 8 and Opbouw's' architecture's move to the Holland's architecture - in colloquy and photographs from 1910 to 1930 which had the similar aspect and chronological situation of the modern world.

• KSBB Journal
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• v.19 no.2
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• pp.98-103
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• 2004

The aim of the present study was to investigate how the hardness of groundwater affects in the alcohol fermentation. Ozone plays an important role to enhance the water quality, resulting in 85% reduction of hardness, and 30% increase in total glucose produced due to increased conductivity and biodegradability of water. After all, experiments using ozone are presented for the improvement of alcohol productivity. Although initially increased slightly alcohol production, higher than expected ethanol production was observed, with ozone treatment resulting in 20% higher production.

• KSBB Journal
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• v.15 no.6
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• pp.630-634
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• 2000

Chiral epoxides are useful chiral synthons in organic synthesis, and various biological methods have been investigated for their production. In this work, the enantioselective resolution of racemic styrene oxide was investigated using Aspergillus niger sp. for the production of optically pure (S)-styrene oxide. The enantioselectivity and initial hydrolysis rates of the racemic substrate were highly dependent of the pH, temperature, and the volume ratio of cosolvent. Experimental sets of pH, temperature, and the volume ratio of cosolvent were investigated using a central composite experimental design, and reaction conditions were optimized by response surface analysis. The optimal conditions of pH, temperature, and the volume ratio of cosolvent were determined to be 7.78, $28.32^{\circ}C$, and 2.4%(v/v), respectively, and optically pure (S)-styrene oxide (>99% ee) was obtained at 35% yield using this microbial enantioselective hydrolysis reaction.

• Proceedings of the Korean Society of Computer Information Conference
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• 2014.01a
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• pp.409-412
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• 2014

본 논문에서는 환자가 실내 측위 기술과 스마트폰을 이용하여 대형 병원의 내부에서 진료 동선을 스스로 찾아갈 수 있도록 하는데 도움을 주는 네비게이션 모델을 제안한다. 정보기술의 비약적인 발전과 함께 실내 측위 기술을 결합한 스마트폰의 위치기반 어플리케이션들이 각광 받게 되었다. 또한, 실내 측위와 관련된 응용 서비스도 새로이 창출되어 점차 이에 대한 관심과 그 정확성을 높이기 위한 연구들이 활발하게 이루어지고 있다. 기존의 실내측위 기법들 중 가장 보편적인 것은 Wi-Fi 신호를 이용 하는 삼각측량 기법으로 초기 구축비용이 저렴하며 서비스 제공 가능 범위가 넓어 본 논문에서 다루고자 하는 장소인 병원의 특성에 알맞다. 따라서 본 모델은 Wi-Fi를 이용하여 사용자의 정확한 위치를 추정하고 진료 프로세스에 따라 경로를 안내를 해주는 네비게이션 서비스를 제공한다. 이를 통하여 환자에게는 진료를 위한 효율적인 동선을 제공함과 동시에 대형 병원에서는 인적, 물적 낭비를 줄이는데 도움이 되고자 한다.

• Korean journal of communication and information
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• v.59
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• pp.92-115
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• 2012

The authors examine the characteristics of the counter public sphere during the late Chosun era based on three dimensions: historical, ideological, and analytical. The counter public sphere during the late Chosun era was a lively communicative sphere where the common people, who resisted the premodern ideas and foreign power, tried to overcome the oppressing social and political environment. Although the counter public sphere did not continue to grow during the Japanese colonization era, it provided a basis of the independence movement and the ideological ground for the democratic movement today.

• Informatization Policy
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• v.17 no.3
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• pp.21-35
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• 2010

Enterprise Architecture (EA) is known as a means to solve IT management problems. In 2005, the South Korean government introduced it and required each agency to develop a variety of architectural products. Such an early-stage EA effort turned out to be not very effective because those products were hardly of use for pan-government IT governance. Realizing these problems, the Lee Myung Bak government has decided to change its direction so that EA products would also be utilized at pan-government IT decisionmaking. After reviewing the early stage of EA effort, we in this study describe such a transition. Future directions of EA efforts are also discussed at the end.