• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2009년도 추계학술발표대회 논문집
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• pp.185-190
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• 2009

Due to the building energy consumption of total energy consumption of Korea takes over 24%, economizing building energy and using renewable energy resources is being required. To suggest the prototype of zero energy house of country house, the passive systems and active systems are applicated and simulated. In case of wall insulation system is applicated, the heating load of building is reduced. Also, clear triple pair glazing system reduced 2.1% of heating load of building. The amount of reducing heating load by infiltration is depending on the Heating system. In this model, the 0.3ACH made 14.6% saving on heating load from base infiltration 0.82ACH. The solar thermal system of active system could save 80% of DHW and PV system supplies electric power more than average consumption of year. Through the optimum process, the end use of zero energy house of country house is 36kWh/m2.yr and total energy consumption is reduced about 74.2%.

• 한국지진공학회논문집
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• 제1권4호
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• pp.21-28
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• 1997

우리나라 전통 초가삼간의 1/4 축소모델을 제작하여 연약지반 조건에 대한 내진 성능실험을 수행하였다. Imperial Valley 지진파를 사용하여 모델의 파괴 시까지 거동을 분석하였다. 탄성한계 내에서 초가삼간의 고유진동수는 장방향 및 단방향 각각 1.66Hz 및 1.76Hz로 측정되었다. 탄성한게 내에서의 감쇠비는 약 7%이다. 수평방향의 최대 가속도응답은 입력에 비해 감소하며 이는 목조 프레임의 비선형, 비탄상 특성 때문이다. 수평방향의 변위응답은 입력이 증가함에 따라 급격히 증가하여 최대 지반가속도 0.25g에서 모델이 붕괴되었다. 비선형 지진해석 결과와 실험결과를 비교하였다.

• 국제지역연구
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• 제16권1호
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• pp.3-27
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• 2012

본 연구는 패널 공적분 검정 그리고 비교적 최근에 개발된 패널 단위근 검정을 이용하여 지역 주택가격과 지역총생산 간의 장기관계를 분석하였다. 횡단면 의존성(cross-section dependence)이 확인된 경우, 이를 고려한 Pesaran의 CIPS 패널 단위근 검정을 이용하였다. 기존 패널 단위근 검정의 결과와 다르게 CIPS 검정은 변수들이 불안정성을 갖는 것으로 나타났다. 또한 패널 벡터오차수정모형(VECM)을 이용하여 변수들 간의 인과관계를 확인하였으며, 고정효과모형(Fixed effect)과 패널 자기회귀시차(ARDL)모형을 이용하여 계수들의 장기관계를 구체적으로 추정하였다. 먼저 변수들 간에 공적분관계가 형성되며 장 단기 인과관계가 성립하는 것으로 나타났다. 또한 VECM 모형의 오차수정항은 통계적으로 유의한 것으로 나타나 변수들 간의 장기 공적분 관계를 뒷받침하고 있다. 모형의 추정 결과, 장기적으로 주택가격의 상승은 지역총생산을 증가시키며 반대의 관계도 성립함을 알 수 있다. 이 결과에 의해 우리나라 지역 주택시장에서 부의 효과(wealth effect)가 존재하고 있는 것으로 나타났다. 이러한 결과들과 함께 오차수정항으로부터, 주택 가격과 경제 변수들은 단기적으로는 일시적인 균형상태로부터 이탈될 수 있지만, 장기적으로는 이들 변수는 균형관계에 있다는 것을 의미한다.

• Journal of the Korean Data and Information Science Society
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• 제19권2호
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• pp.559-568
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• 2008

This paper analyzes Korean residential tenure choice for house which is the most important in Korean households' assets. Data used in the analysis is the data of Korean Labor and Income Panel Study for the period from 1998 to 2006 and with 2341 households. In this paper, a household chooses a housing tenure mode, either by renting or by owing house. We use a mixed-logit panel model as an estimation model to take into consideration household's heteroscedasticity of preference in tenure choice. It turns out that the heteroscedasticity is significant in households' tenure choice behavior, implying that Korean housing policy emphasizing supply side should consider the demand side.

• 한국농공학회논문집
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• 제51권6호
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• pp.17-23
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• 2009

The Soil and Water Assessment Tool (SWAT) model was used in this study to evaluate the hydrologic impacts by the impervious surface change in the farm region. The model was calibrated and validated by using four years (1999-2002) of measured data for the Gyeongancheon watershed in Korea. The simulation results agreed well with observed values during the calibration and validation periods. Land use scenarios including various changes of the plastic film house area in the farm region were applied to assess their effects on watershed hydrology. The results indicated that the surface direct (5.6%~14.0%) and total runoff (0.8%~1.5%) increased, but the groundwater discharge (10.7%~27.7%) and evapotranspiration (1.5%~3.3%) decreased as the plastic film house area (5.7%~12.4%) increased.

• 한국농촌건축학회논문집
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• 제7권2호
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• pp.1-8
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• 2005

In a rural house, it is necessary to make a quality model that choose effective design value engineering. So more effective models, this study examine requests of a rural house project designers, constructors, and tenants. Checked items are classified into four groups that working area, dwelling area, constructive and environmental parts. Each groups are also divided into detailed items for basic decisional elements. When basis points sets 10, it can be divided that working area parts 3pts, dwelling area parts 2.5pts, constructive parts 3pts and environmental parts 1.5pts. In this results, we can make a proposal of evaluation on additive value quality model for a rural house in design value engineering.

• 한국건축시공학회지
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• 제5권2호
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• pp.107-113
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• 2005

This study analyzes remaining repair rate and applied repair rate with the presentation of profit model for the purpose of pursuing maximization of added value through remodeling of apartment house. Objects of remodeling and item applying the whole replacement of functionality evaluation items include exterior of building (3 items maintaining the current conditions, 8 items requiring the whole replacement), water supply/sanitary/gas/ventilation facilities (6 items maintaining the current conditions, 6 items requiring the whole replacement, electric/fire fighting/elevator facilities (8 items maintaining the current conditions, 20 items requiring the whole replacement) and heating/water heater facilities (2 items requiring the whole replacement).

• 한국농공학회논문집
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• 제54권2호
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• pp.55-65
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• 2012

In the winter season, when the ventilation system is operating, the fresh cold air from the slot-type openings of broiler house which directly reached the animal zone can cause various problems such as thermal stress, decreasing of feed and water consumption, occurrence of respiratory disease, and etc. Therefore it is very important to control the trajectory of aero-flow from the slot openings to induce an efficient thermal heat change. Jet-drop distance model was proposed to predict and control the jet-trajectory. However their study was restricted due to the small scaled model and difficulties of measuring the Jet-drop distance. In this study, CFD was applied to analyze qualitatively and quantitatively the jet-drop distance in a real broiler house. The various variables were considered such as installed slot-angle, designed ventilation rate, and the outdoor ambient temperature. From the present study, two linear-regression models using the Jet-drop factor and corrected Archimedes number, and their R-squared values 0.744 and 0.736, respectively, were used. From this study, the applicability of CFD on the analysis of Jet-drop distance model was confirmed.

• 한국건설관리학회논문집
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• 제6권6호
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• pp.98-106
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• 2005

아파트 건설원가 추정지수와 그 예측모델은 아파트 분양가격 변동의 적정성을 평가하고 건설기 업이 적정이윤을 계상하도록 유도할 수 있다. 본 연구에서는 기존의 철골 철골조주택 공사비지수를 개선하고, 개선된 지수를 대상으로 X-12 ARIMA 방법에 의한 예측방법을 개발하였다 연구결과 최근 5년간 노무비를 제외하고 약 33.7%의 아파트 건설 원가상승요인이 발생하였으며, 향후 3년간 16.8%가량 추가 상승할 것으로 예측되었다. 이러한 정량적인 연구결과는 최근의 높은 아파트 분양가격의 적정성을 간접적으로 평가하는 지표로 활용될 수 있고, 아파트 건설원가의 변동패턴을 이해하는데 도움을 줄 수 있다.

• 한국주거학회논문집
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• 제16권4호
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• pp.17-28
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• 2005

The purpose of this study was to find out the residents' needs fur rural houses and to suggest the policy directions for developing Korean rural viewscape houses. The subjects were 386 houses and residents. They were selected according to accessibility, area characteristics, administrative district, and village types. The data were collected by using the interview and observation method based on the questionnaire. By analyzing the residents' needs for rural houses, the following conclusions were derived: 1) In order to preserve the rural characteristic, the government should lead to establish the yard space and the exterior design factors such as wall material and color, and the shape, material, and color of roof. 2) At the same time, the government should provide the residents with the subsidy for house improvement, so that they can build the desirabe size of house and the aged remodel their houses. 3) The contemporary design model of rural Han-ok should be developed and built. 4) The new rural house model improving roof design should be developed, because present houses with slab roofs and skirt roofs spoil the harmony with the rural natural environment. 5) The direction of rural houses for viewscape was defined as to satisfy residents' needs for convenient housing lift and to harmony visual and physical factors - building form, material and color - involving Korean rural housing culture.