• 한국측량학회지
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• 제25권6_1호
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• pp.499-505
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• 2007

A method of improving the correctness and confidence in land use classification as well as urban spatial structure analysis of local governments using GIS and satellite imagery is suggested. This study also compares and analyzes LSAS (Land Suitability Assessment System) results using two approaches-LSAS with priority classification, and LSAS using standard estimation factors without priority classification. The conclusions that can be drawn from this study are as follows. First, a method of maintaining up-to-date local government data by updating the LSAS database using high-resolution satellite imagery is suggested. Second, to formulate a scientific and reasonable land use plan from the viewpoint of territory development and urban management, a method of simultaneously processing the two described approaches is suggested. Finally, LSAS was constructed by using varieties of land information such as the cadastral map, the digital topographic map, varieties of thematic maps, and official land price data, and expects to utilize urban management plan establishment widely and effectively through regular data updating and problem resolution of data accuracy.

• 한국철도학회논문집
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• 제9권5호
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• pp.539-543
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• 2006

We need to make the standards of maintenance information for urban transit to reduce the cost to maintain the information and to share the information with maintenance workers. It is enable to do systematic maintenance for urban transit by using the information system based on the standardized information. In this paper we propose the major items to standardize and the methods to lay out the standard schemes to enable structured maintenance. We present the 4 items, bill of material, material classification, accident/fault classification, electronic document, to standardize. And we propose how to implement the information system for urban transit based on the standardized information. We describe the implemented information system in two parts; a rolling-stock and an infrastructure part. And also we describe the result of survey to evaluate the system installed at Seoul Metro and Seoul Metropolitan Rapid Transit.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 추계학술대회 논문집(II)
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• pp.259-264
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• 2003

Failure code system must include data of maintenance history, classification of failure, affective range and situation when failure occur. But the present failure code system have used a simple code system for classification to include only merchandise and tools. Advantageously, expansional standard code system that will be developed, it make that users can take steps of standardized overhaul and inspection as proposal maintain contents when failure occur or something wrong in vehicle of urban transit. Standardized failure codes must be developed and used that manufacturing companies and urban transit operating companies in order to give effect to maintenance works.

• 한국조경학회지
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• 제31권4호
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• pp.1-12
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• 2003

The urban park provides a safe rest and leisure area, and offers the beauty of nature to counter the drearyness of urban space. It can provide benefits such as the reduction of environmental pollution, the regulation of the local climate, and it can also provide a safe area during times of disaster. However, there was no interest in urban park development and control in Korea during the economic boom of the mid 1960s. Furthermore, during the industrialization process, the population grew significantly in the cities and the cities' scales were noticeably extended; as a result of this, the living environment and the natural environment in the cities worsened. With rapid urbanization and industrialization, urban green area diminished, and it became necessary to organize the urban park system to improve quality of life. 45% of south korea's population lives in 6 cities, which is only 4% of Korea's land size. The Urban park system has to be considered in the urban planning process. Paris' urban green system can be a role-model for Korea's urban green development plan to function organically. Urban public park concepts have been used in Paris's urban planning since 1850. There were hardly any parks, gardens and squares for the public before the middle of the 19th century. For improving life-styles for the poor, Napoleon III strongly supported the development of green space systems in Paris by G.E. Haussmann. Napoleon III and Haussmann established and applied the urban green regulation within Paris urban planning. The purpose of this study is to investigate the green regulations Haussmann's Paris urban plan and urban green space system: and as a result of this, it can be an indicator for urban green space development in Korea.

• 시스템엔지니어링학술지
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• 제18권1호
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• pp.99-104
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• 2022

In this paper, to increase the maintenance efficiency of the urban railway train control system and to build a standard data system, we collect as much as possible structured, unstructured, and semi-structured data, and collect data by sensing and monitoring the system status and system status and monitoring. pre-process function data(Identification, purification, integration, transformation) through effective data classification and maintenance activities business classification system was studied. The purpose of this is to define the data matrix model by considering the relationship with the data generated and managed in the O&M stage of the train control system operated by the urban railway together with the WBS model, and to reflect and utilize it in practice.

• Ecology and Resilient Infrastructure
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• 제7권3호
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• pp.199-207
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• 2020

전 세계적으로 홍수, 가뭄, 열파 등 기상재해가 빈발하는 환경에서 도시공원은 휴식, 문화, 생태적 기능뿐만 아니라 도시민의 안전을 위한 기능도 제공해야 한다. 본 연구는 도시 내 기후변화에 대응하는 녹색 공간인 생활권 공원에 복합기능을 확보하는 목적으로 도시인의 안전을 위한 도시방재공원의 분류체계를 제안하였다. 문헌 조사를 통해 분석지표를 추출하고, 대상지 현장조사 및 관련자 인터뷰를 통해 분류체계를 검증하였다. 평가를 위한 대분류는 도시공원의 입지, 공간구성, 방재복합시설 3가지로 구분하고, 실증 분석을 통하여 도출된 문제점에 대한 개선방향을 제안하였다.

• 한국콘텐츠학회논문지
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• 제18권12호
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• pp.646-659
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• 2018

본 연구의 목적은 도시공원과 같은 도시 내 녹색공간에 재해예방기능을 추가한 '저류공원'의 개념을 정립하고 그 분류체계를 제안하는 것이다. 저류공원은 도시공원과 저류시설을 도시계획시설로 중복 결정하는 것으로 도시민의 일상적인 이용을 위한 공간제공과 유사시 재해저감 기능을 수행하는 두 가지 역할을 동시에 수행할 수 있는 장점이 있다. 기후변화에 따른 도심 내 침수 등을 예방하기 위해서는 저류시설이 도시계획시설과 함께 제도적으로 검토가 되어야 시설이 공원 등의 형태로도 설치가 가능한데, 저류기능과 도시 주변 환경에 초점을 맞추어 법리적 검토를 하다보니 저류공원이 주제공원으로서 입지가 명확하지 않음을 알 수 있었다. 따라서 본 연구에서는 국내외 사례조사 및 현장 답사를 통해 도시 내 저류시설 유형을 도시 녹색공간의 입지적 특성을 반영하여 총 5종류의 저류공원으로 재분류하여 제시하였다. 저류공원에 대한 분류는 지하수위, 사람의 이용, 저류랑의 규모를 기준으로 생태형, 식생피복형, 운동시설형, 지하매설형, 복합형 등 총 5가지로 구분하였다. 이 분류체계는 향후 저류시설 입지를 지정 후 조성되는 시설의 유형을 결정하는데 활용할 수 있다.

• 한국조경학회지
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• 제50권2호
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• pp.76-88
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• 2022

도시공원은 도시 내 생태적 기능과 함께 일상생활의 여가공간 역할을 담당한다. 도시공원은 공원을 방문하는 이용자의 수요를 반영해야 함에도 불구하고, 현재 대다수의 도시공원이 환경특성을 반영하지 못하고 일률적으로 조성되어 유지되고 있다. 이에 본 연구에서는 2005년 공원법 개정 후, 세분유형 변경이 완료된 공원을 중심으로 변화를 살펴보았다. 법적공원유형이 변경된 공원은 모두 45개로 그중 어린이공원에서 소공원으로 유형변경이 21개소로 가장 많았으며, 주제 공원인 문화공원과 역사공원으로 공원의 특성을 살리고자 하는 경우도 19개소에 달했다. 변경 유형별로 문화공원과 역사공원은 건물 신축 등 시설율이 증가한 반면, 소공원은 시설면적이 감소하고 녹지면적이 증가하였다. 공원시설면적 증감을 분석한 결과, 공원 정비를 통한 이용활성화를 추구하는 긍정적인 효과와 동시에 녹지면적이 감소하는 부정적인 면을 확인할 수 있었다. 도시에서 공원이 가지는 순기능 중 하나인 생태환경 유지를 위해서는 공원 주변여건에 대한 반영과 함께 새로운 시설기준 마련이 필요하다. 추후 공원 유형별 시설기준에 대한 심도 있는 논의를 통해 도시공원 유형별 조성 가이드라인 마련을 위한 심층적인 연구가 진행되기를 기대한다.

• Journal of Positioning, Navigation, and Timing
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• 제12권2호
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• pp.149-155
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• 2023

In urban areas it can be difficult to utilize global navigation satellite systems (GNSS) due to signal reflections and blockages. It is thus crucial to detect reflected or blocked signals because they lead to significant degradation of GNSS positioning accuracy. In a previous study, a classifier for global positioning system (GPS) signal reception conditions was developed using three features and the support vector machine (SVM) algorithm. However, this classifier had limitations in its classification performance. Therefore, in this study, we developed an improved machine learning based method of classifying GPS signal reception conditions by including an additional feature with the existing features. Furthermore, we applied various machine learning classification algorithms. As a result, when tested with datasets collected in different environments than the training environment, the classification accuracy improved by nine percentage points compared to the existing method, reaching up to 58%.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 춘계학술대회 논문집
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• pp.935-941
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• 2004

While the environment of usage of information and technology is getting stable and technology is being developed more deeply due to the globalization, making information, standardization, in order to make a fast response to the new industry strategy and business environment, mutual communication and management of correct and fast information are focused on as fundamental elements of keeping competitive power. Accordingly strategic development of urban transit operation organization, storage of information technology of urban railroad, and buildup of standard information infra are very important, so that computerized information system has been built up standardizing efficient maintenance framework of urban transit facilities. To maintain these facilities efficiently, storing the real-time information by standardizing the maintenance organization and building up computerized information system are very important with management of information history of existing maintenance work. Therefore, for the efficient maintenance of track system among urban transit facilities, standardized facilities classification and definition of management elements, and the plan of designing and building standardized database about track. system through standardizing technology resources are described in this paper.