• Fire Science and Engineering
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• v.23 no.3
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• pp.121-130
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• 2009

This study is researched about the field trip of temples and the data for fire extinguishment manual of fire stations: it is done from June 2008 to December 2008 the 80 main temple wooden cultural properties among the 124 main wooden cultural properties appointed by the Cultural Heritage Administration. Cultural properties appointment classification, location classification, temple area, building area in a temple, building area of appointment cultural properties, a fire engine drive direction for fire suppression in a fire, distance from a fire station, and present condition of a fire administrator are researched. The cultural properties possess characteristic is in 2 cases: the whole things in a temple are appointed as cultural properties and only the wooden building is. The cultural properties are classified: the transport is possible or not. The special quality of cultural properties are classified for early correspondence and cultural properties transport in a fire and the basic data are arranged for damage limitation.

• Progress in Medical Physics
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• v.2 no.2
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• pp.141-148
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• 1991

A since authors started IORT for stomach cancer patient on 198, we developed various sized, shaped IORT cones for better clinical application and homogeneous surface and depth dose distribution. Authors concluded as following. 1. The shaping block should be fixed on the tray, not under the tray for homogeneous dose distribution. 2. The straight cone was showed better dose distribution than divergence cone. 3. The acryl cone was superior than the stainless-steel cone. 4. The acryl cover fixed on the end for IORT cone not only improvement of surface dose, but also homogenity of depth dose.

• Progress in Medical Physics
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• v.3 no.1
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• pp.45-52
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• 1992

Authors started IORT for stomach cancer patient on 1988 and rectal cancer on 1991. We devloped various sized. shaped IORT cones for better clinical application and homogeneous surface and depth dose distribution. Authors obtained results as following. 1. The acryl cover fixed on the end for rectal IORT cone not only improvement of surface dose but also flattness of dose distribution. 2. Dose distribution of elliptical cone were shown almost 100% at inner field. 3. The output with acryl cone size were similar output of made electron cone.

• Journal of the Korean Regional Science Association
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• v.36 no.1
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• pp.51-67
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• 2020

The purpose of this study is to estimate the housing area per capita for verifying if the public Big Data, of the building ledger and resident registration ledger, can be used as well as the National Census and Housing Survey. The Mankiw and Weil (MW) model was constructed by extracting samples of general detached houses and flat houses from the public big data, and compared with the result from traditional survey method. Then, the MW models of 25 municipalities in Seoul was established. As a result, it can be confirmed that it is possible to establish MW models comparable to regular surveys using public big data, and to establish a model for each basic localities which was difficult to use as a regular survey method. Public Big Data has the advantage of expanding the knowledge frontier, but there are some limitations because it uses data generated for other original purposes. Also, the difficult process of accessing personal information is a burden to carry out analysis. It is expected that continuing research should be needed on how public Big Data would be processed to complement or replace traditional statistical surveys.

• Radiation Oncology Journal
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• v.10 no.2
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• pp.147-153
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• 1992

It is ideal thing to compensate tissue deficit without skin contamination in curvatured irradiation field of high energy photon beam. The 3-dimensional compensating technique utilizing tissue equivalent materials to ensure an adequate dose distribution and skin sparing effect was described. This compensator was made of paraffin ($70\%$) and stearin wax ($30\%$) compound. The parameters for evaluation of the effect on skin dose in application of compensator were considered in the size of the field, the thickness of the compensator and the source-to-axis distance. The results are as follows; the skin doses were not changed even though application of the compensator, but depended on the field size and the source-to-axis distance, and the skin doses were only slightly changed within $1\%$ relative errors as increasing the thickness of the compensator in these experiments.

• Journal of the Korean Institute of Landscape Architecture
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• v.42 no.5
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• pp.88-100
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• 2014

The purpose of the study is to analyze the regional effectiveness of wall-plantings by applying a biotope area ratio when wall-plantings are constructed in high density areas. For this, this study required a sample of the wall-planting's regional plan. Therefore, types of wall-planting were determined and applied to a sample site. Four types of wall-plantings were developed by formative features and functional features. Type "A" had simple and functional features, Type "B" had both mixed and functional features, Type "C" had both simple and landscape features and Type "D" had mixed and landscape features. Jung-gu District in Seoul was chosen as the sample site. Total investigations were performed three times for three months from June to August, 2011. Total green-able walls were located in 498 places with a total length of 8,449m and gross vertical area of $23,754.90m^2$. The classification results of total green-able walls by the four types were Type "A" at $1,936.65m^2$, Type "B" at $5,875.30m^2$, Type "C" at $12,487.85m^2$ and Type "D" at $3,455.10m^2$. This study analyzed how all facade areas of the green-able walls impacted the biotope area ratio at the site. First, the biotope area ratio regarding all the zones in Jung-gu District was defined as the gross biotope area ratio while the biotope area ratio regarding all of the artificial zones was defined as the net biotope area ratio. In the case of the gross biotope area ratio, 17.97% is current ration with a projected increase to 0.10% after wall-planting. In the case of the net biotope area ratio, 4.73% is the current ration with a projected increase to 0.11% after wall-planting. This 0.11% is about 2.28% of 4.73%. This study looks at all wall-plantings that have been constructed throughout a high density area to observe their impact on the improvement of ecological function therein. With consideration of the landscape value of the facade, the regional effectiveness of wall-planting is expected to increase even more.

• Journal of Yeungnam Medical Science
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• v.8 no.2
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• pp.114-120
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• 1991

In electron therapy, low melting point alloy is used for shaping of the field. Electron field shaping material affect the output factor as well as the collimator system. The output factors of electron beams for shaped fields from NELAC-1018 were measured using ionization chamber of Farmer type in water phantom. The output factors of electron beams depend on the incident energy, inherent collimator system and the size of shaped field. Obtained results were followings. 1. In the smaller applicator, output varied extremely according to extent of collimator opening. 2. The higher energy, the output is less varied according to treatment field at small field.

• Korean Journal of Environment and Ecology
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• v.14 no.4
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• pp.217-237
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• 2001

본 연구는 계룡산국립공원 갑사 계곡에 위치하는 낙엽활엽노거수군집의 식생군집구조를 부석하기 위하여 18개의 Belt-transect를 설정하여 조사하였다. 노거수군집 전체면적은 $46.442\m^2$이었고, 이 중 노거수가 차지하는 면적은 $35.246\m^2$이었으며, 대표적인 현존식생은 느티나무군집, 팽나무군집, 회화나무군집, 소나무군집, 말채나무군집이었다. 노고수의 규 은 흉고직경이 50~120cm, 수고가 18~22m 이었으며, 흉고직경 70cm이상되는 수종은 소나무(1주), 느티나무(9주), 갈참나무(8주), 졸참나무(1주), 회화나무(2주), 말채나무(1주)이었고, 본 조사 대상지의 평균수령은 150년생 내외이었다. 18개 조사구에 대하여 DCA의 ordination 분석결과 소나무군집, 느타나무-낙엽활엽수군집, 검팽나무-낙엽활엽수군집, 회화나무군집, 말채나무군집, 팽나무군집으로 분리되었다. 교모측의 우점종감의 평균거리는 8~12m이었고, Shannon의 종다양도는 0.7~0.9(단위면적:$200\m^2$_이었다.X>_이었다.

• 산림경영
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• s.187
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• pp.13-15
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• 2008

2007년 말 현재 우리나라 나무 총량은 약 6억 2,440만$m^3$로 작년 한 해 동안 9,800만$m^3$가 자란 것으로 조사되었으며, 산림면적은 6,944ha가 감소한 638만 2,000ha인 것으로 나타났다.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.289-289
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• 2020

국내에서 강변여과수는 1990년대 말 이후 기술개발이 지속적으로 이루어져 왔으나, 아직까지도 방사형집수정의 적정 취수량 결정에 필요한 조사 및 설계 단계에서의 적정 조사물량에 대한 기준이 마련되어 있지 않은 실정이다. 방사형집수정 1기당 취수량 결정은 경험식에 의한 방법과 수치모델링에 의한 방법을 병행하여 이루어지고 있으나, 취수량 평가에 가장 중요한 수리전도도(k)의 오차로 인하여 설계단계에서 추정한 취수량과 시공 이후의 취수량에 차이가 존재하고 이로 인한 다양한 논쟁이 존재하고 있다. 본 연구에서는 경기도 안성천에서 시공된 방사형집수정의 사례를 토대로 조사단계에서의 적정 시추공의 갯수를 제시하고자 하였다. 수평정의 2m 간격으로 채취된 토양 및 총 8공의 시추공에서 채취된 토양 등 총 164개의 입도분석 자료를 이용하여 대표요소면적(Representative elementary area, REA)의 개념을 적용하여 적정 조사공의 갯수를 분석한 결과, 안성천 방사형집수정 규모의 경우에는 1기당 6~7개의 조사공이 필요함을 도출하였다. 본 연구에서는 경기도 안성천의 사례를 토대로 수행한 만큼 향후 낙동강 등 타 지역의 사례를 토대로 확인되고 검증된다면 강변여과수의 조사 기준으로서 활용될 수 있을 것이다.