• 한국통신학회논문지
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• 제33권5A호
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• pp.517-525
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• 2008

본 논문은 균일한 도심지역에서의 CDMA 시스템의 상향링크에 대하여 송신전력, 간섭전력 및 블로킹 확률 등을 최소화하는데 기지국 배치에 따라 결정되는 셀 모양의 효과를 분석하기 위하여 시스템 수준의 모의실험이 이루어진다. 도심 마이크로 셀에서 기지국에 대한 경로 손실은 단말이 위치한 거리의 방향성에 영향을 받는다. 단말로부터 기준 기지국에 대한 간섭은 2차 Tier까지 고려된다. 간섭 계산의 정확성에 대한 손실 없이 계산 복잡도를 줄이기 위한 방법으로Wrap around method가 사용된다. 모의실험 결과는 송신전력, 간섭전력 및 블로킹 확률 등이 효율적인 기지국 배치에 따른 셀의 모양에 따라 줄어들 수 있음을 보여준다.

• 대한건축학회논문집:계획계
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• 제34권4호
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• pp.133-140
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• 2018

This study is change of the street space of the port city of Yokohama and the transformation process of the canal. modern port city Yokohama is a region that was responsible for the development of East-West maritime transport routes in Japan in the 17th century and the inland transportation through fishing villages and ports. it has also grown rapidly as a regional port and new port. In particular, through the revitalization of trade between foreign settlements and Japanese residents in the port area, the existing fishing area became a modern port city space. Yokohama went through the following process and grew into a modern port city. The construction of the port harbor and the maintenance of existing logistics functions, the formation of the central horizontal axis through maintenance of the fishing village, the construction of the logistics movement route to the inland area through the construction of the canal, the expansion of the horizon for fire prevention and fire restoration, The formation of a new settlement space according to the movement, the transformation of the existing religious axis by the combination of the elaboration and the introduction of modern transportation, and the spatial connection between the inland cities.

• Asian Journal of Atmospheric Environment
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• 제10권4호
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• pp.179-189
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• 2016

Here we evaluated the effect of using water retentive pavement or WRP made from fly ash as material for main street in a real city block. We coupled computational fluid dynamics and pavement transport (CFD-PT) model to examine energy balance in the building canopies and ground surface. Two cases of 24 h unsteady analysis were simulated: case 1 where asphalt was used as the pavement material of all ground surfaces and case 2 where WRP was used as main street material. We aim to (1) predict diurnal variation in air temperature, wind speed, ground surface temperature and water content; and (2) compare ground surface energy fluxes. Using the coupled CFD-PT model it was proven that WRP as pavement material for main street can cause a decrease in ground surface temperature. The most significant decrease occurred at 1200 JST when solar radiation was most intense, surface temperature decreased by $13.8^{\circ}C$. This surface temperature decrease also led to cooling of air temperature at 1.5 m above street surface. During this time, air temperature in case 2 decreased by $0.28^{\circ}C$. As the radiation weakens from 1600 JST to 2000 JST, evaporative cooling had also been minimal. Shadow effect, higher albedo and lower thermal conductivity of WRP also contributed to surface temperature decrease. The cooling of ground surface eventually led to air temperature decrease. The degree of air temperature decrease was proportional to the surface temperature decrease. In terms of energy balance, WRP caused a maximum increase in latent heat flux by up to $255W/m^2$ and a decrease in sensible heat flux by up to $465W/m^2$.

• 한국조경학회지
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• 제52권2호
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• pp.21-38
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• 2024

본 연구는 문헌 고찰을 통해 도시 열환경 개선 및 보행자 열쾌적성 증대를 위한 효율적인 가로녹지 조성방안을 제안하는 것이 목적이다. 특히, 녹지 계획 및 설계에 활용가능한 매개변수를 도출하고, 매개변수별로 열환경 완화 매커니즘을 분석한 후, 이를 바탕으로 녹지 계획 및 설계 시 활용가능한 수종선택 방법 및 녹지조성 방법을 제안하였다. 이를 위해 국내외 관련 논문 중 4단계 과정을 통해 고찰하고자 하는 61개의 논문을 선정하였으며, 선정된 논문을 분석하여 다음과 같은 주요 결과를 도출하였다. 열스트레스가 높은 종횡비 낮고 천공률이 높은 오픈된 거리협곡의 경우, 그늘의 양과 질을 높이기 위해 수관폭이 넓고, 수고가 높고, 지하고가 낮고, 엽면적 지수가 높고, 수관의 녹량이 많은 활엽수를 다열의 좁은 간격으로 다층식재하는 것이 열저감에 효과적이다. 반면 열스트레스가 비교적 적은 종횡비가 높고 천공률이 낮은 깊고 좁은 거리협곡의 경우, 거리협곡 내 환기력을 높이기 위해 수관폭이 좁고, 지하고가 높고, 수관높이가 낮고, 엽면적 지수가 낮은 활엽수를 넓은 간격으로 식재하는 것이 열저감에 효과적이다. 본 연구는 거리협곡 내 열환경 개선 및 보행자 열쾌적성 증대를 위한 가로녹지 조성의 기초자료로 활용할 수 있으며, 녹지의 위치 선정 및 우선순위 선정 시 기초자료로 활용할 수 있다. 나아가 기후변화 대응을 위한 녹지 계획 및 설계를 위한 가이드라인 작성 시 기초자료로 활용될 수 있을 것으로 기대한다.

• 건축역사연구
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• 제16권4호
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• pp.7-22
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• 2007

In San Francisco, two new museums were recently built in 1995 and 2005. The one is San Francisco Museum of Modern Art designed by Mario Botta and the other is De Young Museum designed by Jacques Herzog & Pierre de Meuron. The urban settings for the museums are compared with each other and theories of the architects are evolved on different branches in the modernist trends. The theories and settings are followed by the representation in the forms, facades, interior spaces and towers. SFMOMA is located on the SoMa area, which was recently developed into a cultural urban core with Moscone Center and Buena Yerba Garden. De Young Museum was rebuilt in the old museum site in the Golden Gate Park. The one is on the context of urban artefacts and the other on the context of natural artefacts. To Botta, the museum in today's city plays a role analogous to that of the cathedral of yesterday. It is a place of common encounter and confrontation. The volume of SFMOMA which is geometrical and symmetric with double pylons. The frontality on the street and public green open space and the axiality of SFMOMA runs through the Buena Yerba Garden over Buena Yerba Center for the Arts are reminded us of an urban core with a religious monument and a city square. The staircase with grandiose design in the atrium seems to work as an altar with lighting from skylight above enhancing the liturgical ambiance. De Young Museum is shaped in a rectangle with long narrow courtyards. Three bands of volumes are juxtaposed and the nature flows into the museum corridors and galleries. The tower is distorted so as to be aligned to the street grids of the surrounding area. The copper panel of De Young Museum and natural context evoke modern concept of "machine in the garden". The two museums from different pedigrees of Modern Architecture are now major landmarks of SF and urban expressions for the 21st century.

• 복식문화연구
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• 제11권5호
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• pp.778-792
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• 2003

This study is to review, in the social and cultural context, the main causes for the sportism that prevails in modern fashion, and to analyze the typical expressions in the domestic fashion. Many factors attribute to the advent of sportism such as rapid development and cultural changes toward sports, increase in leisure time and abundant opportunities, new fashion materials resulting from new technologies, emerging youth culture and increasing preference for such culture, and the postmodernism. With this background, sportism, which has been appearing in the domestic fashion, falls into 5 categories as follows based on the type of its expression. “Urban Street Sportism” is affected by the new sports culture of urban young people, which is characterized such that body line is disregarded with over-sized garment in layered style without considering T.P.O. concept. “Romantic Sportism” applies colors, fabrics and details of romantic images to sporty items, or culminates the feminine and elegant sportism by using the sporty fabrics and details along with romantic items. “Vintage Sportism” is characterized by its well-refined, high quality expression of naturally worn for long time, which is affected by the postmodernism. “Urban Utility Sportism,” which is developed with such design factors as fabrics, styles, details and colors with emphasis on their utility and functionality, explicitly accommodates the changed modern life styles particularly in urban areas. Lastly, the military image, which was developed during the Iraq War along with simultaneous anti-war activities, and the peace messages, which deliver the mankind's hope for the world peace and social wellness, formulate the “Military Sportism”.

• 한국주거학회논문집
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• 제19권4호
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• pp.21-29
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• 2008

The purpose of this study is to evaluate preferences for spatial composition by urban design guidelines of detached housing areas using CG simulation, with the aim of contributing to the improvement and management of residential townscapes. The list of urban design guidelines for detached housing areas was derived from an analysis of urban design guidelines and landscape regulations from the U.S.A, Japan, and Korea. These guidelines comprise building guidelines, landscape guidelines, street guidelines, and sign guidelines. Through the preferences revealed by CG simulation, an optimum presentation method for the urban design guidelines was determined. Based on the results of preferences, an appropriate management system and regulation standards were proposed. In conclusion, the efforts carried out on the study and legislation of a management system and regulation standards for the urban design guideline will accomplish the amenity of residential environments.

• 한국주거학회논문집
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• 제14권2호
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• pp.1-7
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• 2003

The purpose of this study is to develop the urban design guidelines in detached housing areas for the improvement and management of residential townscape. Through a detail examination and analysis of the urban design guidelines and landscape regulations of U.S.A, Japan, and Korea to be applied to detached housing area for residential townscape, the urban design guidelines in detached housing area was derived. Urban design guidelines are composed of building guidelines, landscape guidelines, street guidelines, and sign guidelines. The municipality have to make regulations in detached housing area for the improvement and management of residential townscape based on this urban design guidelines.

• 국제초고층학회논문집
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• 제11권1호
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• pp.15-24
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• 2022

Over the past 30 years, the tall building has seen unprecedented global support. With advanced innovation and many regions around the world discovering increasing growth rates, the tall, supertall, and megatall buildings continue to drastically alter the vertical urbanism of the cities they inhabit. For centuries, urban conditions in most major territories were predominately defined by the street wall and the spaces it shapes. Giambattista Nolli's 1748 Map of Rome most clearly illustrates this significance and possibly solidifies what generations would understand to be the predominant urban condition. As architects, it has been a city's lower vertical wall fabric that has often been the primary focus of efforts to craft an urban experience, and for good reason. Through recent examples of built and unbuilt KPF projects, this paper will explore an upper vertical wall fabric, an urbanism that not only exists at the ground but also within the troposphere.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2015년도 춘계 종합학술대회 논문집
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• pp.359-360
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• 2015

본고는 조명방식, 일반 광원 특징 및 사용성, 광원선택, 구체, 어너지 절약조치에 관한 중국의 도시 가로시설물 디자인 기준을 정비하여 중국 지린성 랴오위안시 가로시설물의 문제점을 제시하고, 가로시설물의 개선방안 및 개선이 필요한 공공시설물 디자인 유형에 대하여 기술하였다.