• Journal of the Architectural Institute of Korea Planning & Design
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• v.35 no.4
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• pp.93-102
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• 2019

In 1960s Russian avant-garde architects such as Moisei Ginzburg, Konstantin Melnikov and Ivan Leonidov were rediscovered in the western architectural society. In this period Rem Koolhaas investigated the projects of Ivan Leonidov with great enthusiasm. In late 1920s and early 1930s when the hope and fantasy to the social revolution and technology reached the climax, The third generation of Russian avant-garde intended to find the new synthesis of the technology, the form and the social ideology. In this context, Leonidov proposed audacious projects from the small scale to the urban scale in the influence of Malevich's suprematism, Vesnin's technological fantasy and Ginzburg's concept of "social condenser". These projects seriously affected Koolhaas. This relationship of Leonidov and Koolhaas was indicated but not investigated in concrete manner. This study intends to analyze the projects of Leonidov and to investigate the relationship of Leonidov and Koolhaas in Delirious NewYork and in the projects of Koolhaas. We will analyse this relationship in three categories : hedonistic technology, social collectivity and pure geometry.

• KEPCO Journal on Electric Power and Energy
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• v.2 no.3
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• pp.425-431
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• 2016

Supply Capability of the generator, if the maximum demand occurs, refers to the maximum power that can be stably supplied and it is possible to maintain stable power supply to be greater than actual load. However, unexpected power demand and reduction in supply Capability due to stop of unexpected generator in operation can temporarily make a big chaos in power system. In fact, due to a lack of power supply Capability in the country, enforced emergency load adjustment to the September 15, 2011, the circulation power outage has occurred in several cities. As the result, interrupted operation of the elevator and stopped hospital medical equipment led to a great deal of trouble to people's lives, causing a social problem. At that time, it was found that a failed frequency control because of smaller actual supply Capability than that of predicted. The difference was about 1,170 MW with Gas turbine power plant. By accurately calculating the generator supply capability, we can not only grasp the power reserve rate, but also correspond to the time of power supply instability.

• Journal of the Architectural Institute of Korea Planning & Design
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• v.34 no.7
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• pp.89-98
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• 2018

Koolhaas' perspective on urbanism differs from the modern urbanism and typological urbanism. The Melun-Senart masterplan, La $D{\acute{e}}fense$ masterplan shows unique characteristic different from that of conventional urbanism. The roots of this creative approach can be found in the traits of his research with O.M. Ungers back in the 1970s. Koolhaas and Ungers have collaborated intimately from 1972 to 1977 to work on urban projects. This collaboration reaches its cilmax in their project City in the City, where many of Koolhaas' core concepts such as archipelago, void/solid, plurality, infrastructure, congestion, and social condenser are introduced. This thesis will explore the development of these concepts in their collaboration and shed new light on how this period has made a transition into Koolhaas' perspective on urbanism and architecture as well as his works. The purpose of this study is to investigate these core concepts of Koolhaas in City in the City, and to find the development and the meaning of these concepts in his projects.