• KIEAE Journal
• /
• 제11권2호
• /
• pp.75-82
• /
• 2011

In Korea, the ratio of population in urban areas used to be only 50.1% in 1970, but with the value risen to 90.8% in 2009, urbanization is going on rapidly. Urbanization, which occurs by the rampantly planted buildings, has become major source of raising building density, changing wind direction and reducing wind amount, and such reductions are affecting even inside the building. In each year, among the total energy consumption in Korea, residential portion takes up significant ratio, and specifically the ratio of apartment house is shown to be highest. In order to solve such problem, many studies are being conducted for the improvement of natural ventilation performance. The natural ventilation performance of apartment house are significantly determined by the characteristics of external and internal structure, but in macroscopic perspective, the performance is established fundamentally by the layout characteristics of the main building of the apartment house in preparation for wind conditions. So far researches on raising the thermal comfort through elevation of ventilation performance have been conducted actively, but many of them propose only theoretical concepts deduced through wind path analysis, and do not include any indicator to measure ventilation performance simply only with area data from layout planning stage. Therefore, in this study, gap ratio a wind field measuring indicator was developed, and after the ventilation characteristics by layout types and main building uniformity were identified, the scope of gap ratio efficient for ventilation and that of uniformity were clarified, followed by verification through simulation.

• 대한건축학회논문집:구조계
• /
• 제35권5호
• /
• pp.169-179
• /
• 2019

During the initial design stage of apartment complex, the photovoltaic(PV) system has been considered as an alternative of renewable energy system and planned to install at the rooftop floor level in general. The electric power generation characteristics can be influenced by the block layout, building orientation and roof top structure because of azimuth angle, tilt angle, and partial shading. This study aims to investigate power generation characteristics of photovoltaic system in apartment buildings by considering the partial shading conditions due to the block layout, building orientation and roof-top structures. For the photovoltaic module arrangement planning in rooftop floor level, shading areas were firstly analyzed due to the adjacent building structure. And the annual and seasonal power generation of PV system were analyzed through the PVsyst simulation results. The results show that shading period at the roof top surface can be increased due to the parapet and water tank. Initial design power capacity can be decreased by considering the daily insolation period and distance between PV modules through the shading simulation. As the number of PV modules decreases, the annual power generation can be decreased. However annual power generation per unit area of PV modules can be increased and performance ratio can be increased above 80%. Also the power generation of PV system can be critically affected by building orientation and the performance ratio can be drastically decreased in east-oriented buildings due to the shading problems caused by adjacent structures at roof top level such as parapet and water tank.

• 한국고분자학회:학술대회논문집
• /
• 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
• /
• pp.173-173
• /
• 2006

We have explored a strategy to control the supramolecular nano-structures self-assembled from rigid segments through attachment of flexible chains through microphase separation and anisotropic arrangement. Supramolecular structures formed by self-assembly of rigid building blocks can be precisely controlled from 1-D layered, 3-D bicontinuous cubic to 2-D cylindrical structures by systematic variation of the type and relative length of the respective blocks. Furthermore, depending on the individual molecular architectures, rigid building blocks self-assemble into a wide range of supramolecular structures such as honeycomb, disk, cylinder, helix, tube, barrel stave, and nano-cage.

• Journal of East-Asian Urban History
• /
• 제3권1호
• /
• pp.139-160
• /
• 2021

The verandah was a common feature of Chinese multi-storeyed houses in Southeast Asia and China. This paper argues that while an earlier version of a narrow walkway might have had its origin in Singapore, the building of an extension on the upper floors encroaching the airspace over the road skirting the building was an arrangement allowed by the colonial Hong Kong government in compensation to landlords for space devoted to ventilation. As the introduction of reinforced concrete allowed buildings to become taller, the more attractive it was to developers to incorporate the verandah design.

• Wind and Structures
• /
• 제9권6호
• /
• pp.473-492
• /
• 2006

This paper presents numerical results of pedestrian-level wind environment around the base of a row of tall buildings by CFD. Four configurations of building arrangement are computed including a single square tall building. Computed results of pedestrian-level wind flow patterns and wind speeds are compared to previous wind tunnel measurement data to enable an assessment of CFD predictions. The CFD model uses the finite-volume method with RNG $k-{\varepsilon}$ model for turbulence closure. It is found that the numerical results can reproduce key features of pedestrian-level wind environment such as corner streams around corners of upwind building, sheltered zones behind buildings and channeled high-speed flow through a building gap. However, there are some differences between CFD results and wind tunnel data in the wind speed distribution and locations of highest wind speeds inside the corner streams. In locations of high ground-level wind speeds, CFD values match wind tunnel data within ${\pm}10%$.

• 한국디지털건축인테리어학회논문집
• /
• 제5권1호
• /
• pp.40-47
• /
• 2005

As we know usually architecture of Korea landscape painting inside, pavilion(Jung-ja) and many-storied building(Ru-gak) have painted mainly. But besides general building that home, mountain fortress wall, temple, royal palace was expressed by a real view landscape painting. The main purpose of this research is to enhance the basis that can understand well tradition architecture by korea landscape painting. To achieve this goal, Even if it is same kind of building, a lot of differences become by material of roof, position of building, expenditure of building. Division of inside and outside is precious data that can know life physiognomy of general peoples. In Structural side, Expression of fabrication and value as data that can know composition and arrangement of plane are important.

• 한국건설관리학회논문집
• /
• 제12권6호
• /
• pp.160-167
• /
• 2011

본 연구는 공동주택 내에 설치되는 주민복지시설의 활성화를 위해 사전 타당성 평가 모델 구성을 목적으로 수행되었다. 이를 위해 D신도시에 위치한 공동주택 단지 5곳을 사례대상으로 선정한 후 주민복지시설의 현황을 조사하였다. 그리고 타당성 평가 항목 조사를 위해 선정된 사례대상 공동주택 5곳의 거주자 및 이용자를 대상으로 설문조사를 수행하여 기획단계, 설계단계, 운영단계로 구분하여 타당성 평가 항목을 도출하였다. 기획단계, 설계단계, 운영단계에 대한 타당성 평가 항목 도출 결과를 바탕으로 AHP기법을 활용하여 평가 항목에 대한 중요도를 분석하였다. 중요도 분석 결과 값의 검증을 위해 관련 전문가의 설문을 통해 중요도 분석 결과 값을 비교하였다. 상기와 같은 목적과 방법에 따라 도출된 결과를 정리하면 다음과 같다. 공동주택 단지 내 주민복지시설의 활성화를 위한 사전 타당성 평가 항목의 중요도 분석 결과 기획단계(P-1)의 경우 이용시설구성, 사용자조사, 시설배치 항목이 가장 높게 분석되었으며, 설계단계(P-2)의 경우 실별 평면배치, 동선계획, 교구비품 항목이 가장 높게 분석되었다. 그리고 운영단계(P-3)의 경우 운영비, 운영일정, 이용시설검토 항목이 가장 높게 분석되었다.

• 한국인터넷방송통신학회논문지
• /
• 제22권4호
• /
• pp.41-48
• /
• 2022

본 연구는 5G가 안정화되어 갈수록 많은 양의 트래픽이 건물 내 발생할 것으로 예상됨에 따라, 건물 내 5G 품질향상을 위해 지향성이 향상된 인빌딩용 안테나를 설계한 연구이다. 야기 안테나 전파 지향원리인 안테나 소자 전진 배열방식을 응용한 것이 아니라, 기지국용 안테나에 적용된 수직 배열 방식의 안테나 설계 방안을 제시한 것이고, 실험을 통해 안테나 지향성이 증가함을 확인하였다. 실험 결과에 따르면, 안테나와의 이격거리가 10m 이내에서는 지향성이 크게 증가하지 않았지만, 10m 이상 이격된 거리에서는 지향성이 약 3dB 가량 증가한 것으로 나타났으며, 빌딩 내 무선환경이 외부 환경과 달리 내부 구조물의 구조, 콘크리트, 유리와 같은 자재, 폐쇄된 공간, 벽면 등 다양한 변수가 존재하는 점을 고려하였을 때, 지향성이 향상된 안테나는 향후 빌딩 내 5G 품질개선의 폭을 넓힐 수 있고, 건물 내에서도 안정적인 통신 서비스를 유지시킬 수 있을 것으로 기대된다.

• 한국환경과학회지
• /
• 제19권12호
• /
• pp.1397-1402
• /
• 2010

In recently, building greening to improve the urban environment is a very important areas. Thus, in order to promote the building greening is needed for the arrangement of its related system. In this study, analyzed the related system in Japan and the results obtained are as follows. Related system in Japan are to promote the spread of compulsory and dissemination of guidance. And to promote the spread of dissemination of guidance are to allowed a system to be included in green area of the site required, plans to loan the costs of greening, plans to subsidize the cost of greening, tax reduction and exemption, incentive on floor area ratio, plant supply and other technical guidance system. In conclusion, in order to promote the building greening note the related system of Japan and our related system should be arranged.

• 로봇학회논문지
• /
• 제6권1호
• /
• pp.42-48
• /
• 2011

It is very important for a mobile robot to recognize and model its environments for navigation. However, the grid map constructed by sonar sensors cannot accurately represent the environment, especially the narrow environment, due to the angular uncertainty of sonar data. Therefore, we propose a map building scheme which combines sonar sensors and IR sensors. The maps built by sonar sensors and IR sensors are combined with different weights which are determined by the degree of translational and rotational motion of a robot. To increase the effectiveness of sensor fusion, we also propose optimal sensor arrangement through various experiments. The experimental results show that the proposed method can represent the environment such as narrow corridor and open door more accurately than conventional sonar sensor-based map building methods.