• 설비공학논문집
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• 제27권4호
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• pp.228-232
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• 2015

The water supply galvanized steel pipes of apartment buildings in Bucheon city constructed with building permission before 1994 have many problems such as leaks, the water containing rust, and low water pressure due to corrosion. Therefore, this study aims to find a way to renew the water supply pipes under investigation through a survey. As a result, when replacing the galvanized steel pipe with the corrosion-resistant pipe, the water supply system should also be changed from the gravity tank system to the booster pump system and the hygienic water storage tank. It is necessary to redraft the long-term repair plan including the replacement of the water supply system. Also, it is necessary to save the allowance reserve according to the modified long-term repair plan.

• 조명전기설비학회논문지
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• 제27권10호
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• pp.1-8
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• 2013

Wireless Visible Light Communication is the technology that enables communication using LED illumination Infrastructure instead of existing illumination such as incandescent lamp or fluorescent light. Because VLC uses light for communication, it has no problem of frequency permission and is harmless to human body. It is also possible to check the communication through eye. So VLC can be used as a supplement to the Radio Frequency communication, Infrared in indoor environment. So far, researchers on the LED Visible light communication have focused on the increasing transmission speed, transmission distance, modulation method. However, there is few research of main factors that influence on system performance. System performance has been mainly predicted through simulation. In this paper, I recognized that these factors such as outside light noise, obstacle, LED panel position or emitted angle have a great impact on wireless communication system. So I experimented VLC system by changing distance and position to discover location suitable for BER regulation.

• 한국물환경학회지
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• 제22권5호
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• pp.807-814
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• 2006

Sapkyo Lake Watershed occupies about 19.3% of total area of Chungnam Province, and it is necessary to make a plan of counter-measure for the maintenance of public waterbody sound as well as to ensure water resources due to urbanization and industrialization in this area so densely populated and excessively developed. Conventionally water quality management has been enforced by concentration-based system which is not considered the carrying capacity of receptors, hence there are no proper measures for the prevention of an excessive pollutant load over a waterbody. So even though emission sources abide by the conventional permission regulation, then the quantity of wastewater is increased continuously and encountered water shortage to use finally. Therefore this research focused on the review of introduction of total water quality management system in Sapkyo Lake watershed to maintain public waterbody sound and to ensure water resources. By doing this research in introduction of the system in advance, it can contribute to establish the methodology on systematic water quality management. Also the application of this system in Sapkyo Lake watershed can promote the sustainable development of the area by harmonizing the environment and regional economy ultimately.

• 디지털콘텐츠학회 논문지
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• 제10권3호
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• pp.447-452
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• 2009

정보화 시대에 정보에 대한 공유와 함께 네트워크에 연결된 다른 컴퓨터에 대한 다양한 제어 기술이 나타나기 시작했으며 이 중 하나가 원격제어 시스템이다. 그러나 기존 원격제어 시스템은 제한적인 기능에 의해 사용상의 불편한 점이 많았다. 예를 들면 제어를 위한 서버 프로그램이 실행되어야 하므로 이를 위해 컴퓨터 전원이 항상 켜져 있어야 하며 상대방의 원격제어 허락에 의해서만 1대1 원격제어가 가능하다는 것이다. 이러한 기존 원격 시스템의 한정된 제어 기능 문제를 해결하기 위해 본 논문에서는 한 대의 서버 컴퓨터로 여러 클라이언트 컴퓨터를 연동함으로써 1대1이 아닌 다중 클라이언트 컴퓨터에 원격으로 전원 제어가 가능하도록 WOL(Wake On Lan) 기능을 적용한 시스템을 구현하였다.

• Journal of information and communication convergence engineering
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• 제3권4호
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• pp.195-200
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• 2005

The MPEG-4 standard is aimed to define an object based audiovisual coding standard to address the emerging needs from interactive broadcasting. Since a broadcasting program is created on the basis of its objects, it is considered that MPEG-4 is most suitable for interactive broadcasting contents production and it can be retrieved in terms of its properties. But, there is no system that protects the copyright of digital contents and manages copyright and possibility that contents producer and author's copyright receives infringement at process that exchange contents mutually rose very. Therefore, we need to control and distribute contents according to user's permission rights. In this paper, we present the authoring system based on MPEG-4 IPMP for copyright and protection of MPEG-4 contents. The main features of the proposed approach is to provide an MPEG-4 compliant IPMP authoring system in a plug-in type along with standardized interfaces, which is to be able to incorporated into an existing MPEG-4 content authoring system. In this way, it is capable of authoring content to the MP4 file format while accommodating protection and management of content in a unified way. Furthermore, it also allows a user to edit and/or author IPMP information in a more efficient way by offering form based user interfaces.

• 환경영향평가
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• 제16권4호
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• pp.301-310
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• 2007

For the improvement of air quality in the metropolitan area, Korea has enforced the air pollutant emission cap regulation from the 1st of July, 2007, and the companies that intend to install a new or an enlarged facility in the metropolitan area will be restricted. However, the current regulation on permission does not describe a standard of judgement distinctly. In this study, therefore, a method of permission on the installation of a new or an enlarged facility was developed by supplementing the law in force based on the foreign cases. To develop a specific permit regulation and procedure, the developed nations' cases such as US, Canada, EU were reviewed thoroughly. Also, an appropriate method was suggested to apply domestically for a new or an enlarged facility permit within the regulations of the metropolitan special law. The method consists of first, calculating the possible permit quantity from the difference between an estimated annual emission cap and the annual emission provided by the implementation plan in each region. Second, permitting a new or an enlarged facility construction within the difference of the emission between the regional emission cap and the implementation plan in 2014. Third, distributing emissions allowable to each performance year based on the regional emission cap and the implementation plan in 2014. Fourth, making use of the emission difference between the implementation plan and the performance result in each year. Considering the general domestic conditions, the convenience of the permit authority and permitted companies, the most reasonable method was to use the fourth. To enforce the suggested permit method in a more flexible way, parts of the related regulations need to be revised and continuous research and analysis on the results from the implemented system and on foreign cases is necessary to develop this method a suitable system for domestic conditions and to settle the air pollutant emission cap system.

• 자원환경지질
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• 제54권5호
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• pp.505-513
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• 2021

21세기 들어 영국, 호주 등 해외에서도 대도시권의 주택가격 상승문제가 나타나고 있다. 이들 정부는 대도시 인근에 위치한 개발종료 채석장 부지를 택지로 적극 활용하여 주택부족 문제를 해소하고자 하고 있다. 본 연구에서 검토한 영국의 Erith Hill Quarry (The Quarry)나 Plymstock Quarry, 호주의 Lilydale Quarry (Kinley)와 Bombo Quarry는 모두 도시 계획적 제도를 통해 개발이 종료된 채석장을 주택, 상업 등 복합용도로 개발한 사례이다. 영국은 도시계획제도의 틀 안에서 Section 106이라는 계획허가 제도를 통해 지방정부가 개발종료 채석장 부지의 복합개발을 허가하는 대신 지역에 필요한 학교 등의 공공시설과 저렴한 주택을 공급하도록 하고 있다. 호주는 채석장의 토지이용을 산업에서 복합용도로 변경할 수 있도록 지방정부의 허가권한을 활용하고, 개발계획에 저렴한 주거 외에도 도시기반시설, 오픈 스페이스 등이 포함되도록 하고 있다. 특히, 호주의 사례에서 개발계획을 사전에 수립하고, 단계적 개발방식을 통해 상부 표토 및 표석을 채굴적을 메우는 충전재로 활용한 것은 사업비를 절감하는 효과도 있는 것으로 보인다. 영국과 호주 모두 개발종료 채석장 부지를 택지로 공급하는 것이 신규 녹지를 훼손하는 것보다 미래세대를 위한 지속가능한 친환경적 개발이라는 관점에서 바라보고 있다는 점에서 다소 경직된 우리의 도시개발 제도에 정책적 시사점을 제공할 수 있을 것으로 보인다.

• 한국항행학회논문지
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• 제12권4호
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• pp.304-310
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• 2008

삼면이 바다인 우리 해양은 각종 폐기물로 인하여 환경오염 피해가 심각한 상태이다. 따라서 폐기물 중 상당부분을 차지하고 있는 그물을 적극적인 태도로 관리한다면 환경오염은 상당히 줄어들 것이며, 이로 인하여 해양 생태계에도 큰 도움이 될 것으로 본다. 본 연구는 선박에서 투망하는 그물 및 회수된 그물을 파악하기 위한 그물관리 시스템을 개발하고자 한다. 그물관리 관리 시스템은 해양에 투기되는 그물을 관리하기 위하여 선박 입항과 출항 내역을 관리하고, 해양에 무단으로 투기된 폐그물의 발생을 억제 시켜서 폐그물로 인한 환경오염 및 해양 선박 침몰사고를 방지하는데 그 목적을 둔다.

• 한국CDE학회논문집
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• 제21권3호
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• pp.242-251
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• 2016

Around the world, BIM application has been mandated. In Korea, an announcement was made in 2016 that BIM application will be required for all public constructions ordered by the Public Procurement Service. However, BIM cannot be used for building permits as Seumter, a building permit system, doesn't support BIM, even if it was used for building design. To utilize BIM for permit application, this study introduces a method of management for BIM-used permit application information. It was done by analyzing the data entered for new building permit application in Seumter. For the analysis, the permit application information is classified as internal BIM information and external BIM information and the required information is defined. To easily create and utilize the data types at the design stage, this study introduces a method of creating and utilizing a permit template. Also, this study developed a tool for combining the area information to add up all the related information such as gross floor area and floor area ratio. This study is significant in that it analyzes the required information for new building permit application among all the permit application types in Korea.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 추계학술대회 논문집 전력기술부문
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• pp.350-353
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• 2001

This study proposes a new method for the transmission system expansion planning using the fuzzy integer programming. It presents stepwise cost characteristics analysis which is a practical condition of an actual systems. A branch and bound method which includes the network flow method and the maximum flow-minimum cut set theorem has been used in order to proceed the stepwise cost characteristics analysis. Uncertainties of the permission of the construction cost and not strict reserve rate and load forecasting of expansion planning have been included and also processed using fuzzy set theory in this study. In order to proceed the latter analysis, the solving procedure is illustrated in detail by branch and bound method which includes the network flow method and maximum flow-minimum cut set theorem. Finally, case studies on 21-bus test system show that the algorithm proposed is efficiently applicable to the practical expansion planning of transmission systems in future.