• 한국건설관리학회논문집
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• 제7권1호
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• pp.138-147
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• 2006

최근에는 주 5일 근무제도, 공기단축형 입찰제도의 도입, 후분양제도의 도입 등의 제도적 변화로 건설공사의 성공적 수행에 중대한 영향을 미치는 공사기간에 대한 관심이 증대되고 있다. 또한 건설시장의 축소와 최저가 입찰제도하에서 건설수주 경쟁은 더욱 치열해짐에 따라 적정 공사기간의 산정과 예측은 매우 중요하다. 이러한 공사기간에 대한 중요성을 인지하고 공사기간을 비교 분석하거나 예측하고자 하는 연구들이 진행되었다. 국내에서 공사기간의 비교연구는 공동주택과 사무소 건축에 국한되었고 국외에서는 통계적 분석과 시뮬레이션을 통한 공사기간의 예측에 대한 연구가 많이 수행된 반면, 건물에 대한 수요의 변화로 발생된 주상복합건물과 오피스텔건물에 대한 공사기간의 실제 사례비교에 대한 연구는 거의 없다. 이에 본 연구는 국내 건설사들의 주상복합 및 오피스텔 건물의 실적공기와 가상사례를 활용하여 공사기간을 비교 분석한 후 공기 경쟁력 확보를 위한 공사단계 별 대응현황을 분석하는 것을 목적으로 한다.

• 한국건축시공학회지
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• 제19권1호
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• pp.67-76
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• 2019

국내 건설 산업은 도시화 경제발전과 더불어 수요 공급에 대한 선호도가 변화되고 있다. 특히, 은행의 저금리로 인한 금융상품 대체재로 상가, 오피스텔과 같은 임대수익형 투자 상품에 대한 수요가 급증했다. 이에 따라 다양한 영향요인에 의해 사업의 성패가 결정되며, 이들의 상호작용성이 고려된 리스크 분석이 매우 중요하다. 현재 공동주택을 제외한 다양한 프로젝트에 관한 리스크 분석 연구는 매우 부족한 실정이다. 따라서 본 연구의 목적은 최적화 기법을 활용한 주거형 오피스텔 프로젝트 수지분석 모델 개발이다. 이를 위해 첫째, 선행연구 고찰을 통해 기존의 리스크 관리 및 분석방법의 문제점을 구체적으로 확인하고, 본 연구에서 제안하는 모델 개발의 방향을 제시한다. 둘째, 주요 리스크 요인들의 상호영향관계를 분석한 이후, 이를 기반으로 인과지도를 작성한다. 셋째, 시스템다이내믹스를 활용하여 비용-수입 시뮬레이션, 그리고 최적화 모델을 순차적으로 개발한다. 마지막으로 사례프로젝트 대상으로 개발된 모델을 검증한다. 향후, 제안한 모델은 오피스텔개발사업 추진 시 수지 분석 및 경제적 손실을 줄이기 위한 대응방안을 마련하는데 활용된다. 본 연구는 기존 연구결과에서 제기된 바 없는 주거용 오피스텔사업의 내부의 사업비 확률론적 추정모델을 구축하였다는 점과 실제사례와의 검증을 통해 신뢰할 수준의 오차율이 검증되었다는 점에서 향후 신규 사업추진시 주요한 검증자료로 활용될 수 있을 것으로 기대된다.

• 설비공학논문집
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• 제17권1호
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• pp.82-87
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• 2005

The purpose of this study is to suggest the characteristics and actual state of energy consumption by the analysis of energy consumption data in an office building. This study examines and analyzes daily and monthly energy consumption of an office building located in Seoul, Korea regarding type of load and business classification within a building. The results are as follows. 1) Energy consumption of office building for each type of load show similar consumption patterns, regardless of seasons such as cooling period and heating period. 2) Out of all annual energy consumption, consumption for lighting took about $43\;\%,$ general electric Power about $23\;\%,$ emergency power $25\;\%,$ computer center $5\;\%$ and cooling power $4\;\%,$ showing that the consumption for lighting was highest, and the percentage of energy consumption for cooling power for operation of cooling facilities took the lowest percentage. 3) Annual gas consumption used for heating and hot water supply were $38,\;36\;\%$ for officetel and office respectively, and $26\;\%$ for arcade. 4) Electricity consumptions used for cooling power for each use of building, office and officetel recorded in July and August of cooling seasons. Even though it shows different patterns for each month, energy consumption showed unique pattern throughout the cooling seasons.

• 농촌의학ㆍ지역보건
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• 제49권1호
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• pp.59-70
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• 2024

Objectives: This research analyzed and compared housing transaction prices and depression rates according to housing types before and after the COVID-19 pandemic. Methods: Data on housing transaction prices and depression rates from 2018 to 2022 in 25 districts of Seoul, South Korea, were utilized. Dummy variables were employed to account for potential confounders influencing the relationship between the variables. Statistical analysis was conducted using R, and the relationship between depression rates and housing transaction prices was examined through Ordinary Least Squares (OLS) and panel data regression analysis. Results: The results of OLS and one-way random effects models indicated a significant relationship between apartment (p<.05) and officetel (p<.001) transaction prices and depression. However, detached/semi-detached and row/townhouse transaction prices did not exhibit a significant relationship with depression. Conclusion: It was observed that as apartment and officetel transaction prices increased in Seoul before and after the COVID-19 pandemic, depression rates also increased. Considering that changes in housing prices by housing type in South Korea may impact the mental health of local residents, it is deemed necessary to consider healthy housing and housing prices as comprehensive determinants of mental health.

• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 2002년도 춘계학술대회 논문집
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• pp.193-198
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• 2002

• 대한교통학회지
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• 제28권3호
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• pp.145-155
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• 2010

녹색교통으로서 자전거 이용활성화가 사회적으로 큰 조명을 받고 있으나 효과적인 성과를 내기 위해서는 자전거 이용특성에 대한 구체적이고 치밀한 분석이 선행되어야 한다. 이는 1995년 이래 2007년까지 자전거도로를 9,170km나 정비하였음에도 불구하고 동기간동안 자전거 수단분담률이 오히려 감소(국토해양부, 2009)한 점을 통해 알 수 있다. 본 연구는 2006년 조사된 '수도권 가구통행실태조사' 자료(303,308개)를 이용하여 통행 주체별 자전거 수단분담률을 구체적으로 분석하였다. 그 결과 학원 수강목적과 오피스텔 거주자의 자전거 수단분담률이 각각 3.75%, 3.13%로 통행 주체 중 가장 높은 것으로 나타났다. 아울러 로지스틱 회귀분석을 통한 서울시의 자전거 수단분담률 추정모형을 구축하였다. 동시에 로지스틱 회귀계수에 대한 승산비(odds ratio)의 산출을 통해 자전거 수요에 영향을 미치는 관련 요인과 영향 정도를 분석하였다. 그 결과 단거리 통행, 학원가와 공원, 오피스텔 주택가 중심의 자전거 이용활성화가 효과적인 것으로 판명되었다.

• Asian-Australasian Journal of Animal Sciences
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• 제15권11호
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• pp.1634-1638
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• 2002

Quantification of endogenous amino acid loss at the terminal ileum is an essential means for calculation of the true amino acid digestibility of a feedstuff. Since nitrogen appeared in the determined diet or not could shift the results very much, also, none of digestibility markers could be recovered with 100% rate at the terminal ileum, the objectives of the present study were: (1) to determine endogenous amino acid losses when fed either a casein diet or a protein-free diet and (2) to examine the reliability of chromic oxide or acid insoluble ash in the protein-free diet. Six ileal-cannulated pigs ($65{\pm}1.85 kg$ BW) with a simple T-cannula in the terminal ileum were used in a replicated $3{\times}3$ Latin square designed trial, after allowed a 14 d recuperation period. Each test period ran for 12 days comprised of a 10 d adjustment period and a 2 d collection period. The endogenous AA losses of His, Ile, Lys, Cys, Thr, Val, Trp, Asp, Glu, and Ser from pigs fed the casein diet were significantly higher than those of the protein-free diet (p<0.05). No significant difference was found in the amount of endogenous amino acid loss when determined with the different markers in the protein-free diet (p>0.05). These data suggest that endogenous amino acid loss could be underestimated when a protein-free diet is used. A direct effect of dietary peptides on the endogenous amino acid loss was found when the casein diet was fed. Our results also indicate that acid insoluble ash can be used as an inert marker as an alternative to chromic oxide when measuring endogenous amino acid loss.

• Asian-Australasian Journal of Animal Sciences
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• 제15권1호
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• pp.89-93
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• 2002

A total of six crossbred barrows ($Duroc{\times}Landrace{\times}Large$ White, $44.17{\pm}1.94kg$ BW) were housed conducted to evaluate apparent fecal digestibilities of Brown Rice (BR) as an alternative energy source in growing pigs. Pigs were housed individually on metabolism crate on the basis of body weight. Four treatments contained: 1) 100% of corn-soybean meal (C100; Control diet), 2) 75% of corn-soybean meal diet plus 25% of corn meal (C25), 3) 100% of brown rice-soybean meal diet (BR100), 4) 75% of brown rice-soybean meal diet plus 25% of brown rice meal (BR25). Brown rice has an excellent gross energy and crude protein composition compared to corn. The BR used had 3,801 kcal of gross energy/kg, 8.0% crude protein, 2.6% of ether extract, 0.035% calcium and 0.35% total phosphorus. The best digestibilities of energy (87.75%), DM (81.71%) and CP (78.57%) were observed in BR 100 group and the worst were found in Corn 25 group. The nutrient digestibility was not significantly different in most nutrients. Through this experiment, BR appeared a good alternative energy source that can replace corn yellow to 100% in growing pigs. Therefore, the price relationship between corn and BR may provide an excellent opportunity for pork producers to use BR in order to reduce feed costs provided that diet has been balanced for digestible amino acids.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2008년도 춘계 학술논문 발표대회
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• pp.159-163
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• 2008

The trend of Development Projects has been changing through a few recent years. Small-scale development projects in the past were usually for building residences or officetel in a big cities. making lots of profits. These projects made not only lots of profits but also unbalance between the urban centers and the suburbs. So government made some regulations to prevent the things from being worse anymore, planned to develop the country in balance and began to lead large-scale development project such as Inno city and Newtown. At first, in this study, the phases and the characteristics of development project's change will be looked around. And then, after overview about PFV(project financing vehicle) used a lot in large-scale development projects will be seen, the better ways to use PFV in large-scale development projects are going to be proposed by considering the problems in PFV's conformation.

• 한국주거학회논문집
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• 제15권2호
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• pp.55-62
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• 2004

Apartment design in residential Area is restricted by building distance limit code. Building distance limit decreases gradually to the 0.8H(height), and residential area has 250% site area ratio by building code, so site using has become efficient. In this study, examine the relationship between present building distance limit and right of daylighting environment by computer simulation. As well, high-rise residential officetel and multipurpose residential building becomes increase in commercial non-residential area. In the domestic, residential type multipurpose building made at the business area or central business area has 400∼800% site area ratio by building code. However, at a dweller's point of view, there are much lacks of environmental consideration to provide suitable daylighting environment. And, POE: Post Occupancy Evaluation is not completed yet. In this study, however, progress architectural environment prediction, basis by right of daylighting, and examine the possibility of daylighting by architectural distance limit code in residental area and by high-rise, high-density residential building in non-residental downtown area.