• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.145-152
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• 2022

Recently, interest in the precast concrete (PC) construction method has been increasing. The PC construction process consists of i) design, ii) production, iii) transportation, and iv) installation. A PC field manager at the site submits a shipment request form to the factory one to three days before the installation of the PC component. Numerous matters should be considered in writing a shipment request form. Incorrect shipment request forms may cause standby resources, waste of resources, premature work conclusion, or excessive work. These issues can lead to an increase in construction costs, replanning of PC component installation, or rework. In order to prevent such problems, PC component installation should be simulated based on the shipment request form. Accordingly, this study aims to identify factors influencing the operability of shipment request forms for PC construction. To this end, this study derived factors influencing i) initiation of the activity, ii) addition or deletion of activities, and iii) an increase or decrease in the activity execution time. As a result, this study identified flow, the features of PC components, condition of PC components, unloading location, installation location, input equipment and labor, number of anchors, number of supports, weather, strike, and accident. Further studies should verify the factors derived in this study based on focus group interviews.

• 한국환경복원기술학회지
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• 제9권1호
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• pp.100-111
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• 2006

This study was carried out to increase the efficiency of site investigation through the evaluation of the applicable methods of investigation for cutting slope design. In an effort to find out the applicability of the method employed during the slope investigation, some tests were carried out on 6 subjects i.e location of weak zones, characteristics of discontinuities, distribution of strata, in situ tests for geo-technical properties, laboratory test and estimation of weathering. The method was highly applicable and produced expected results during the test of weak zones, discontinuities and distribution of strata. In order to apply the method to in- situ test for geo-technical properties and laboratory test on soil and rock slope, a statistic analysis of the existing data were required in advance. However its design applicability on rock slope was good although actual cases of application were not many due to limitation of the cases for investigation. The method was frequently referenced but not actually applied for anti seismic design test and estimation of weathering.

• 한국유기농업학회지
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• 제9권4호
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• pp.53-69
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• 2001

The word \"permaculture\" is a contraction of \"permanent agriculture\" or \"permanent culture\". Permaculture principles are designed to support (or ensure) the survival of humanity, the earth and all on it, and, to improve our standard of living, Permaculture can be defined as : a design system for creating sustainable human environments that can be (relatively) easily constructed and maintained. The principles of permaculture designs are relative location every element (such as house , rice paddy, road, esc) is placed in relation to each other such that each assists the other : each element performs multiple functions ; each function is supported by many elements : energy efficient planning ; using biological resources rather than fossil fuels : energy cycling on site (both fuel and human energy) : Using and accelerating natural plant succession to establish favourable sites and soils ; poly-culture and diversity of beneficial species for a productive, interactive system ; use of edge and natural patterns for best effect. These principles can be used for any permaculture design, in any climate, and at any scale. There has been very little scientific examination of Permaculture, and as such, it must be viewed as a design philosophy.viewed as a design philosophy.

• 한국지반공학회논문집
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• 제15권5호
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• pp.141-155
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• 1999

한국해양연구소(KORDI)는 후구로(Fugro Int.)사의 도움으로 마라도에서 약 152km 떨어진 지점에 건설 예정인 이어도 해양관측기지 건설을 위해서 해저지반의 특성조사를 수행하였다. 지반조사의 근본 목적은 해양과학기지가 설치될 이어도의 해저지반의 공학적 특성을 파악하고 조사자료를 이용하여 고정식 해양구조물의 기초설계를 하기 위한 것이었다. 본 논문에서는 해저지반조사의 상세한 설명과 고정식 해양구조물의 기초설계에 필요한 설계상수를 산정하는 방법에 대해서 토론하고자 한다. 연구결과로는 해저 현장토질의 특성을 고려한 해양말뚝의 기초설계에 필요한 지반설계 상수를 제안하였다.

• 정보처리학회논문지D
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• 제17D권1호
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• pp.53-58
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• 2010

본 연구의 목적은 스마트폰 상에서 이용 가능한 실용적인 위치 기반 서비스로 개인 맞춤형 소극장 안내 시스템을 개발하는 것이다. 본 연구에서는 이를 위해 GPS 수신기를 내장한 스마트폰에서 이용 가능한 대학로 소극장 안내 시스템을 설계 구현하였다. 이 시스템은 GPS를 이용하여 사용자의 현재 위치를 자동으로 파악하고 이를 지도에 맵핑하여 표시한다. 또한 파악된 사용자의 현재 위치를 중심으로 가까운 극장 및 공연에 대한 개인 맞춤형 정보를 효과적으로 제공하도록 설계 구현하였다. 구현된 시스템은 현장 실험을 통한 보정 작업을 통하여 실제 상황에서 효과적으로 이용 가능하도록 최적화하였다.

• Earthquakes and Structures
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• 제13권1호
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• pp.67-77
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• 2017

Oil storage tanks are vital life-line structures, suffered significant damages during past earthquakes. In this study, a numerical model for an unanchored vertical vaulted-type tank was established by ANSYS software, including the tank-liquid coupling, nonlinear uplift and slip effect between the tank bottom and foundation. Four actual earthquakes recorded at different soil sites were selected as input to study the dynamic characteristics of the tank by nonlinear time-history dynamic analysis, including the elephant-foot buckling, the liquid sloshing, the uplift and slip at the bottom. The results demonstrate that, obvious elephant-foot deformation and buckling failure occurred near the bottom of the tank wall under the seismic input of Class-I and Class-IV sites. The local buckling failure appeared at the location close to the elephant-foot because the axial compressive stress exceeded the allowable critical stress. Under the seismic input of Class-IV site, significant nonlinear uplift and slip occurred at the tank bottom. Large amplitude vertical sloshing with a long period occurred on the free surface of the liquid under the seismic wave record at Class-III site. The seismic properties of the storage tank were affected by site class and should be considered in the seismic design of large tanks. Effective measures should be taken to reduce the seismic response of storage tanks, and ensure the safety of tanks.

• 한국조경학회지
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• 제32권1호
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• pp.80-91
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• 2004

This landscape design proposal was presented to a design competition for the master plan of Ttukseom Sup, which was held by the City of Seoul in March, 2003. The site is located at 1-685, Sungsu-dong, Sung-dong-gu and has an area of 1,156,498$m^2$. The judging criteria for landscape design set by the City of Seoul could be articulated as follows: first, the proposal should be nature-oriented with groves that can be accessed easily by citizens; second, the proposal should not be facilities-oriented but plants-oriented groves that utilize existing plants; third, the proposal should present its own identity reflecting its historical aspects and geographical location. This proposal has been approached first by redefining the meanings of the old Korean village groves and second, by proposing new cultural infrastructures with the groves corresponding to recent cultural trends.

• 한국농촌건축학회논문집
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• 제14권3호
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• pp.51-60
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• 2012

Gwangju Metropolitan City has implemented a creative regeneration project of Gwangju Folly in the site of Gwangju-eup Fortress as part of the Gwangju Design Biennale by inviting well-known international architects. This study examined and analyzed the characteristics of location, place, and space through actual survey. The results were as follows. Gwangju Folly were mainly located at the four gates and corners of Gwangju-eup Fortress, main entrances of Asia Culture Complex, and historical places where the May 18 Democratization Movement occurred. The common place of Gwangju Folly was a footpath and common location types were the full location of footpath width and the partial location of footpath width. For the spatial types of Gwangju Folly, the practical type which people can stay was the most common(2/3). In the partial location of footpath width, the type which people take a rest and look out over the surroundings accounted for a half. In the full location of footpath width, the gate type which people pass accounted for 2/5. However, as footpath width was minimum for walking, both partial and full occupation types were narrow in place. It influenced the image of Gwangju Folly. Gwangju Folly did not play as a figure and show architects' intentions clearly because of their narrow locations. Therefore, it is very necessary to make a plan to maintain places so that Gwangju Folly do not have a cramped image and architects' intentions become clear with citizens' cultural competence. Also, urban property which creates the identity and attraction of Gwangju continuously should be settled down through helping citizens recognize the intention and value of artistic works.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2004년도 학술발표회
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• pp.134-147
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• 2004

Theses days, there are 3 prerequisites for dam building in Korea: First one is how to build the dam safe and stable from the technical points of view. Second one is how to design and construct the dam environmentally sound with the minimum change of the surrounding area of the dam site. Third one is how to activate the local economy of the surrounding area of the dam site in order to make the dam construction sustainable from the social and economical points of view. As far as technical aspects far dam building, there are hardly any problems in dam design and construction in our country. However, there are a little difficulty according to the location of the dam site. In order to fulfill the second option it is believed that a lot of effort should be made to accomplish the second task not only because that fairly large area shall be inundated with water after impounding but also because that ecological environments shall be changed due to change of water environment. Therefore, thoughtful investigation and assessment of the environmental features of the local regions have to be preceded before starting of the dam building. In order to overcome these difficulties Hantan river dam has been declared as an Eco-dam with 3 strategies and 9 activities plan at the design stage after sufficient consideration of the local identities of these region and coupled national plans for surrounding areas. Finally, Eco-tourism with the several coupled network-wise touristic courses, namely PERTH model, has been proposed after thorough analysis of the local identities by the Jahari window to make local economy being activated. Detailed descriptions for 3 strategies and 9 activities plan for declaration of Eco-dam and proposal of Eco-tourism with the network-wise touristic courses will be mentioned in the main content.

• 한국컴퓨터산업학회논문지
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• 제4권10호
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• pp.547-558
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• 2003

본 논문에서 모바일 단말기를 클라이언트로 사용하는 주차관리 시스템을 설계하였다. 클라이언트는 주차관리 웹 사이트에 접속한 후 주차시간, 주차정보, 주차요금에 관한 정보를 웹 서버에서 제공받으며, 클라이언트의 차에 대한 정보를 감지하는 센서를 통하여 클라이언트의 주차위치를 정보를 파악 하여 크고 복잡한 대형주차장에서 사용자에게 매우 편리한 인터페이스를 제공하고 원활한 관리를 할 수 있는 시스템을 설계를 구현한다.