• 한국지구물리탐사학회:학술대회논문집
• /
• 한국지구물리탐사학회 2003년도 Proceedings of the international symposium on the fusion technology
• /
• pp.410-415
• /
• 2003

Ground subsidence has occurred in the downtown of Muan-eup in Korea. Integrated geophysical survey, including two-dimensional resistivity, CSMT(Controlled source magnetotelluric), magnetic, borehole logging, GPR and resistivity tomography, has been conducted to investigate the cause of subsidence and ground conditions. Since the target area is in the city downtown, there were no spaces for surface geophysical methods. To get regional geology and to facilitate the detailed geophysical interpretation in the survey area, two-dimensional resistivity, CSMT and magnetic surveys have been applied in the outer region of the downtown. From these results, we could accurately define the Gwangju fault system and estimate the geologic conditions in the downtown. For the detailed survey of the downtown area, resistivity tomography and borehole logging data have been acquired using a few tens of densely located boreholes. Among these survey results, borehole logging data provided the guide to classification of the rock type and we could define the geologic boundary of granite and limestone formations. From the resistivity tomograms of 42 sections, which are densely located enough to be interpreted in a three-dimensional manner, we could delineate the possible weak zones or cavities in the limestone formations. In particular, resistivity tomograms in the subsided area showed the real image of ground subsidence. The map of hazardous zone has been derived from the joint interpretation of these survey results and we could provide the possible reinforcement strategy in this area.

• 한국환경복원기술학회지
• /
• 제18권2호
• /
• pp.65-78
• /
• 2015

An important factor in assessing the beneficial qualities of a city's intersection spaces can be measured by examining a pedestrian's approach to the space and calculating the openness observed in the overall design of adjacent buildings. These spaces are influential, since they offer opportunities for pedestrians to spend time and take in views of the surrounding environment. The intersection of horizontal components in cities such as Bundang-si and Suwon-si can provide a sense of openness or greenness. We believe that there is a need for careful analysis and study of such components, as defined by designations in Bucheon-si research, and that this study can give important insights for future urban planning and design. When assessing the openness of an intersection, a key variable is the reported rate of perforation, which factors into the greenness of a space. Because of the large and varied scope of this research, this rate is highly variable, as there were many differences between each site. In descending order of average ratios: Seongnam-si, 41.79% > Bucheon-si, 35.40% > Suwon-si, 30.42%. The data compared for each city was divided into study sites selected at downtown locations as well as in urban outskirts. Openness and greenness were analyzed at each downtown and outskirt site. A summary of the results shows a decreased openness average of -2.63% in downtown locations versus outskirt. The greenness ratios in urban outskirt areas were 4.86% greater than downtown locations on average. As it relates to the results of this analysis of openness, the comprehensive property zoning for each city was determined as a ratio of residential to commercial designations. This study analyzes view points within urban cross intersections in the downtown landscape. It presents basic data and research directions to promote a better environment with regard to openness, and consists of an analysis of the relationship between a variety of physical components.

• 한국주거학회논문집
• /
• 제18권6호
• /
• pp.125-132
• /
• 2007

This study examines and analyzes residential environment and consciousness of downtown residents in Naju city and its results are as follows. Naju's population or urban population were decreased by half for 25 years, but area of residential regions was increased twice. It indicates that major parts of increased residence area are occupied by housing site development area. Uses of downtown buildings are for residential building mostly, but commercial building is less than 1/3 and story of buildings is mostly the first floor. So downtown area in Naju has residential function mostly and family composition is over sixties in more than half of population and regional aging is remarkable because household over majority of the population has no family under twenties. Downtown areas showed detached house and their own house in 2/3 of population and residents over majority of population have lived in current house over 20 years and had strong settlement. But housing site area is less than 40 pyeong at 3/2 of population and 2/3 of population have not parking lot. Most of population have dissatisfaction with their residential environment and for solving their dissatisfaction, improvement of poor residential environment, road extension and construction of parking lot are needed most. Most of residents consider that improvement of residential environment or economic level is normal or developed a little compared to five years ago, but when such a dissatisfaction is solved, they continue to live in their area.

• Spatial Information Research
• /
• 제20권5호
• /
• pp.37-47
• /
• 2012

이 연구의 목적은 유시티에 따른 생활양식 및 도시공간의 변화를 분석하여 이를 반영한 도시 정책 방향을 제안하는 것이다. 유시티에서의 도시공간 변화 분석에 있어서는 도시민 설문조사를 통한 생활양식 변화를 예측하여 추론하는 행태적 접근 방법을 사용하였다. 분석 결과 도심을 주요 활동공간으로 하는 도시기능에 있어 통행량 및 이용의 감소와 입지 선호도의 변화로 도심 집중화 약화와 도시의 외연적 확산이 예상되었다. 개별 용도에 있어서는 통행량과 이용의 감소에 따라 규모나 개수가 축소될 것으로 예상되었으며, 기존 공간의 재편에 있어서는 특히 공공공간에 있어 유비쿼터스 기술을 활용하여 다양한 도시활동을 수행할 수 있는 다목적 공간으로의 변화가 전망되었다. 앞으로 유시티가 정착하면 도시의 공간구조와 시설별 수요가 도심과 비도심에 따라 변화가 예상되므로 이를 반영한 도시계획이 필요하다. 동시에 효율적이고 유연한 도시공간이 조성될 수 있는 발판이 마련되어야 한다.

• 한국농촌건축학회논문집
• /
• 제12권1호
• /
• pp.25-32
• /
• 2010

The aim of this thesis is to present why the business district of old downtown in Jejusi collapsed and what sort of problems caused by that as collecting objective data, which help us to comprehend how the commercial zone has been decaying, on the physical state of the specific area near 'Sinheungro' and 'Chilsungro', which are main commercial sites in the downtown, and analysing it. Firstly It was revealed that most land investigated was property in which structure was able to built or poor land within $60m^2$. This was caused by increasing in land value and high density in space use so that the area did not develop. Secondly, In addition to be low density, most of buildings in 'Sinheungro' and 'Chilsungro' were so old and inefficient - the old buildings were abandoned without improving due to expensive rent and complicated property rights. Thirdly, According to the survey accomplished, major commercial facilities in the area have struggled with the continuous recession in their business. It was the inevitable result of not having an effective alliance with surrounding retail shops and a lack of a strategic action for satisfying consumers desire or adapting to new shopping patterns. Fourthly, Infrastructure in the site was ruining the beauty of the urban landscape as well as bringing on bad access to the inner city as not having improved enough. Furthermore, many administration departments which were in charge of each infrastructure existed. This was resulted from not considering unification between each infrastructure and regional characteristics of the local community.

• 대한토목학회논문집
• /
• 제28권1D호
• /
• pp.21-27
• /
• 2008

서울도심의 경제는 날로 악화되고 있고, 활성화시킬 대안이 필요한 실정이다. 그 대안으로 본 연구에서는 워나비.쇼나비 정보시스템을 개발한다. 쇼나비시스템은 보행자들이 쇼핑할 때 상점의 이름, 위치, 주력상품 및 가격 등에 대한 정보를 실시간으로 제공하는 것을 목적으로 한다. 한편, 워나비시스템은 차량네비게이터와 유사한 기능을 보행자를 위해 수행하는 시스템으로 보행으로 쇼핑하는 사람들에게 길안내의 역할을 하게 된다. 이 시스템을 이용하게 되면 보행자들은 가장 빠른길, 편안한 길, 즐거운 길 등 다양한 보행경로정보를 이동 중 제공 받게 되고 동시에 대중교통정보도 제공받을 수 있다. 워나비.쇼나비 시스템을 실제 작동시키기 위해 필요한 정보통신기술로는 GPS와 RFID 기술을 복합한 방식을 제시했다. 이 시스템을 통해 보행을 활용한 쇼핑이 활성화되고 활기찬 도심으로 거듭날 것을 확신한다.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2012년도 추계 학술논문 발표대회
• /
• pp.189-192
• /
• 2012

Underground structure construction in the downtown is very difficult despite the development of construction technology. We have been a lot of research in order to solve the problem, it was a remarkable achievement. But there are still many difficulties. This study is to analyze the construction technology to demolish the existing underground structures and to build new building applied topdown method at the same time. This technology was effective to suppress interference between the exsisting structure and new building. Therefore, this technology is expected to be able to be used in similar cases in the future.

• KIEAE Journal
• /
• 제13권1호
• /
• pp.159-165
• /
• 2013

Recently buildings are being constructed on the downtown area. In most building construction sites on the downtown area, the need for adequate material inventories are critical in order to avoid project delays and cost increases due to inappropriate deliveries of key materials. However immoderate material inventories cause increasing inventory cost. Therefore, we need a proper management material inventories. This research re-establishes the existing safety stock and analyzes relationship between safety stock and service level. It suggests an economical re-order point based on safety stock considering service level, various demand and delivery time.

• 대한전기학회논문지:전력기술부문A
• /
• 제55권12호
• /
• pp.522-528
• /
• 2006

Korean power system has some problems like as curtailing investment and the NIMBY (Not In My Back Yard) phenomena, because of power demand concentration in downtown area. In this time, superconducting power devices rise as a very attractive solution. This study proposes a basic concept of superconductivity power system with distributed switching station, and identifies the items for technical and economic analysis. The proposed system consists of superconducting cables/ transformers/FCLs(fault current limiters). The basic concept is to replace 154kV conventional cables with 22.9kV superconducting cables and to convert a 154kV substation into 22.9kV distributed switching stations in downtown area.

• 한국건축시공학회지
• /
• 제3권4호
• /
• pp.123-128
• /
• 2003

The purpose of this study is to analyze the efficiency of the noise reduction measure in the downtown construction. For decades, the life level rise in Korea makes the environmental issues developed the important issues. Specially the noise problems have become the hot issue in the building construction. This study covers the efficiency of the measures, which is used in the construction field to reduce the noise. The case was obtained by Korean E＆C company in 2003. It is used as important sources. The results of this study are as follows; the reduction efficiency is higher than that of the old measure. But more efforts are needed to comfort nearby residents.