• 한국주거학회논문집
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• 제12권3호
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• pp.61-73
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• 2001

This study is to examine and classify the phasic characteristics of organic thoughts in modern architecture. Organic architects have applied organic thoughts to solutions for the problems of each period in architecture since modern times. As results of this study, the architecture of organic thoughts from 1850s to 1940s could be divided into two phases. The phasic characteristics of the first phase from 1850s to 1910s was physical resemblance in real or fantastic appearance that the work of art and architecture should imitate organic forms from the view of solid empiricism. The phasic characteristics of the second phase from 1920s to 1940s was organic growth that the form appropriate to a work of art and architecture should grow from the nature of the problem itself as a system in nature grows from the view of pragmatism and was organic unity that the form and function or the form and content of a work of art should be inseparably integrated as the form in nature should grow out of the inner nature of the thing and be an expression of that inner nature from the view of expressive theory.

• 한국지역지리학회지
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• 제7권4호
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• pp.81-92
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• 2001

근대 지리학 방법론 논쟁에서 가장 주요한 쟁점은 지역 지리학의 학문적 성격에 대한 논란이었다. 그러나 대부분의 논의는 지역 연구의 절차를 제시하기보다는 지역 지리학을 형이상학적으로 정당화하는 데 머물렀다. 본 연구에서는 이러한 견해를 비판적으로 검토하기 위하여 지역 지리학 방법론에 내재하는 전제들 가운데에서도 부분과 전체의 관계에 대한 존재론적 가정을 가장 중요한 준거로서 설정하였다. 대부분의 논의는 유기체론에 근거하여 지역을 복합적 존재로서 인식하고, 생명체와의 비유를 통해 지역의 속성을 파악해야 한다고 주장하였다. 그러나, 단위 지역이라는 전제의 한계와 더불어 단순히 요소들을 열거하는 데에 머물렀으며, 지역의 복합성을 포착하지 못하였다. 이러한 한계는 생활양식이라는 전제 위에서 출발한 데에서 오는 당연한 귀결이었다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2008년도 하계학술대회 논문집 Vol.9
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• pp.413-414
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• 2008

We have studied an organic layer thickness dependent optical properties and microcavity effects for top-emission organic light-emitting diodes. Manufactured top emission device, structure is Al(100nm)ITPD(xnm)/$Alq_3$(ynm)/LiF(0.5nm)/Al(23nm). While a thickness of hole-transport layer of TPD was varied from 35 to 65nm, an emissive layer thickness of $Alq_3$ was varied from 50 to 100nm for two devices. A ratio of those two layers was kept to about 2:3. Variation of the layer thickness changes a traverse time of injected carriers across the organic layer, so that it may affect on the chance of probability of exciton formation. View-angle dependent emission spectra were measured for the optical measurements. Top-emission devices show that the emission peak wavelength shifts to longer wavelength as the organic layer thickness increases. For instance, it shifts from 490 to 555nm in the thickness range that we used. View-angle dependent emission spectra show that the emission intensity decreases as the view-angle increases. The organic layer thickness-dependent emission spectra show that the full width at half maximum decreases as the organic layer thickness increases. Top emission devices show that the full width at half maximum changes from 90 to 35nm as the organic layer thickness increases. In top-emission device, the microcavity effect is more vivid as the organic layer thickness increases.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2009년도 추계학술대회 논문집
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• pp.193-194
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• 2009

This report makes an important correction to estimating angular dependent emission pattern of Organic Light-Emitting Diodes (OLEDs). Today, experiments on measuring angular light intensity of OLEDs are conducted without considering the difference between the view angle identified by photodiode and the actual angle being measured. ITO-TPD-$Alq_3$-LiF-Al Organic Light-Emitting Diode was used to find out the degree of the error. In this case, the difference in average was about $1^*$, which is highly significant. Since the difference varies from case to case, the need for adjustment must be evaluated for each case.

• 동의생리병리학회지
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• 제18권5호
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• pp.1270-1274
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• 2004

In the Nei Ching. the interrelation of Yin and Yang within the human body. based upon a perfect balance and a perfect mutual control. The affinity of Yin and Yang to each other was held to have a decisive influence upon man's health. Perfect harmony between the two primogenial elements meant health. Disharmony or undue preponderance of one element brought disease and death. The interrelation of Yin and Yang in the Nei Ching, had the organic view of the life. The world view of the harmony and balance in Nei Ching shows a unified world view that is symmetrical and in equibrilium in unity and conflict of opposite elements instead of combining with the closely related elements, namely, it is a fact that the life principle of the theory of Yin and Yang in Nei Ching is not the object of the killing and destroying for unity and conflict of opposite elements but the life cycle and life rule for the purpose of achieving the world of harmony, coexistence, and engendering via check and balance as well as confrontation between the opposite elements. In Nei Ching, like this, in the case where all of the antagonistic elements including the antagonism between You and Me, Yin and Yang affirm and tolerate each other, the organic view of the life in which the life of You and Me and the macrocosm is able to be maintained is suggested to the human being at a whole crisis.

• 한국실내디자인학회논문집
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• 제14권5호
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• pp.52-61
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• 2005

Ecological traces appearing in contemporary architecture are based on modern architecture and most aspects on the contemporary architecture are related with the successive trend or break of the modern architecture. The concept of environment in the modern age has established clear destination, as it has been considered as nature. The architecture under a mechanical world view in the modem age has sustained the opposing connection with nature as environment. However, there have been architects maintaining the sympathy with nature in that vortex. This trend has been regarded as same context as ecological architecture and estimated to the outpost of ecological characteristics appearing in the contemporary architecture. This study is to make it clear that the ecological manifestation in the contemporary architecture is based on the ecology in the modem architecture through considering ecological ideals of architects in the modern architecture and considering space composition and structural properties in the modern architecture of ecological paradigm. The scope of this study contains spacial analysis, design strategy, and design types of organic architecture in nature, which has appeared from the modern age. First, the division into period is carried out according to the organic tendency of non-mainstream in the modern architecture: Arts and Crafts Movement, Art Nouveau, Sezession, Expressionism, Organic Architecture, Regionalism, Internationalism. Therefore, this study is significant to be on the search for a start to suggest ecological point of view to architectural space in modern architecture and is search organic characteristics for ecological characteristics in modern architecture; organic relation, thermal buffer space, regionalism, multi-layer, energy efficiency.

• 한국유기농업학회지
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• 제10권1호
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• pp.1-18
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• 2002

The aim of this study was to introduce the history and development of German organic farming(Bio-dynamic Agriculture and organic agriculture) which has a worldwide reputation and initiative in organic agriculture. And also the organization of organic producer's or farmer's group such as AGOL, POB, OSL, ALOG & Schweisfurth Stiftung and its regional distribution, the basic standard of organic farming and certification system for organic food, an actual cultivated area for organic forming and organic livestock were also shortly reported. The government subsidizing programmes and Agenda 2000, the extension services for organic farming by government and private level, the research activities of organic agriculture by governmental research body(FAL) and universities, the education system for organic agriculture in the German universities(University of Bonn, Gesamthochschule Kassel, University of Hohenheim, University of Gie$\beta$en and etc) were also explained. In the conclusion it was suggested several issues what should be considered to facilitate an organic farming in Korea in the view of organic production, marketing, distributing, extension and organic processing.

• 한국재료학회:학술대회논문집
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• 한국재료학회 2000년도 제1회 신소재 심포지엄(차세대 광소재 심포지엄)
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• pp.53-76
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• 2000

Multi-color organic electroluminescent (EL) displays have already been commercialized, and the simple extensions of present technologies on organic EL can not be a target for basic research anymore. Future prospect of research on organic electroluminescent devices are described from the view point of possible future break-through. Three aspects, perspective for further increase of device efficiencies, possibility of simplified device structures and possible use of thick organic layers, are discussed.

• 한국전기전자재료학회논문지
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• 제24권1호
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• pp.32-35
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• 2011

Top-emission device has a merit of high aperture ratio and narrow emission spectrum compared to that of bottom-emission one. Emission spectra of top-emission organic light-emitting diodes depending on a layer thickness and view angle were analyzed using a theory of microcavity. Device structure was manufactured to be Al (100 nm)/TPD/$Alq_3$/LiF (0.5 nm)/Al (2 nm)/Ag (30 nm). N,N'-diphenyl-N,N'- di (m-tolyl)-benzidine (TPD) and tris (8-hydroxyquinoline) aluminium (Alq3) were used as a hole-transport layer and emission layer, respectively. And a thickness of TPD and Alq3 layer was varied in a range of 40 nm~70 nm and 60 nm~110 nm, respectively. Angle-dependent emission spectrum out of the device was measured with a device fixed on a rotating plate. Since the top-emission device has a property of microcavity, it was observed that the emission spectrum shift to a longer wavelength region as the organic layer thickness increases, and to a shorter wavelength region as the view angle increases. Layer thickness and view-angle dependent emission spectra of the device were analyzed in terms of microcavity theory. A reflectivity of semitransparent cathode and optical path length were deduced.

• Transactions on Electrical and Electronic Materials
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• 제10권1호
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• pp.28-30
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• 2009

We have studied organic layer-thickness dependent electrical and optical properties of bottom- and top-emission devices. Bottom-emission device was made in a structure of ITO(170 nm)/TPD(x nm)/$Alq_3$(y nm)/LiF(0.5 nm)/Al(100 nm), and a top-emission device in a structure of glass/Al(100 nm)/TPD(x nm)/$Alq_3$(y nm)/LiF(0.5 nm)/Al(25 nm). A hole-transport layer of TPD (N,N'-diphenyl-N,N'-di(m-tolyl)-benzidine) was thermally deposited in a range of 35 nm and 65 nm, and an emissive layer of $Alq_3$ (tris-(8-hydroxyquinoline) aluminum) was successively deposited in a range of 50 nm and 100 nm. Thickness ratio between the hole-transport layer and the emissive layer was maintained to be 2:3, and a whole layer thickness was made to be in a range of 85 and 165 nm. From the current density-luminance-voltage characteristics of the bottom-emission devices, a proper thickness of the organic layer (55 nm thick TPD and 85 nm thick $Alq_3$ layer) was able to be determined. From the view-angle dependent emission spectrum of the bottom-emission device, the peak wavelength of the spectrum does not shift as the view angle increases. However, for the top-emission device, there is a blue shift in peak wavelength as the view angle increases when the total layer thickness is thicker than 140 nm. This blue shift is thought to be due to a microcavity effect in organic light-emitting diodes.