직장항문암에 있어서 Miles씨 술식에 대한 임상적 고찰

박동하,김용덕,문덕진,박주섭 대한대장항문학회 1985 Annals of Coloproctolgy Vol.1 No.1

주택 거래량의 행태경제학적 분석 - 거래량 요인 분해를 중심으로 -

박동하 서울대학교 환경대학원 2020 環境論叢 Vol.66 No.-

두꺼운 부분층식피술을 이용한 음경바세린종의 치료

박동하,임효섭,최종보,박명철,정재호,조대성 大韓成形外科學會 2004 Archives of Plastic Surgery Vol.31 No.3

성능위주설계를 위한 화재감지기배치의 공학적연구

박동하 한국화재소방학회 2010 한국화재소방학회논문지 Vol.24 No.1

Placement method for fire detectors prescribed in current fire safety regulation is just about placing a prescribed number of detectors according to the areas. However, this regulation has no scientific basis and standards from foreign countries are just introduced and fire detectors are installed complying with them. There are two standards in designing fire protection systems; Prescriptive-Based Design that follows stipulated regulations like fire safety standards and Performance-Based Design based on engineering knowledge such as fire dynamics, structural dynamics, mechanics of materials, fluid mechanics, and thermo dynamics. Recently, Fire Protection System Construction Business Act was revised so that fire protection systems can be designed using Performance-Based Design method ('05. 8. 4), though the method has not activated until now. In addition, the enforcement decree defines the range for specific objects of fire protection to which Performance-Based Design is applied ('07, 1. 24). At the moment, by manufacturing simulator so that formulas can be introduced and calculated with software in order to install fire detector of automatic fire detection systems keeping optimized distance, comparing the results with the state of fire detector placed according to Performance-Based Design and analyzing them, this study was intended to settle Performance-Based Design method in the future. 현재의 화재안전기준에서 규정하는 화재감지기의 배치방법은 면적에 따라 규정된 숫자를 적정하게 배치하는 수준이다. 이 기준은 과학적인 근거는 가지고 있지 못하다. 외국의 기준을 도입하여 그에 따라서 설치하고 있을 뿐이다. 소방시설을 설계하는 방법에는 화재안전기준과 같이 명문화 된 규정에 따르는 규범위주설계(Prescriptive-based)와 화재역학, 구조역학, 재료역학, 유체역학, 열역학 등 공학적 지식을 바탕으로하는 성능위주설계(Performance-based design)가 있다. 현재로서는 성능위주설계가 활성화 되지 않았지만,최근 소방시설공사업법은 성능위주설계방법을 이용하여 소방시설을 설계 할 수 있도록 개정('05. 8. 4)되었으며 그 시행령('07, 1. 24)에서 성능위주설계를 적용할 특정소방대상물의 범위를 정하고 있다. 이러한 시점에서 자동화재탐지설비의 화재감지기를 최적의 위치 및 거리에 설치하기 위하여 그에 대한 공식의 도입과공식을 Software로 계산할 수 있도록 시뮬레이터를 제작하여 계산하고 규범위주설계에 따라 배치한 화재감지기의 상태와 비교 분석하며 향후 성능위주설계 방법으로서 정착시키기 위하여 연구를 시도하였다.

주택 거래량에 대한 경제심리학적 분석 - 주택 거래 확률을 이용한 주택 거래량과 가격 변동률 분석 -

박동하 한국주택학회 2014 한국주택학회 학술대회 발표논문집 Vol.- No.2

제한적 합리성에 의거한 주택가격과 거래량 관계 형성 요인의 실증분석

박동하,최막중 국토연구원 2018 국토연구 Vol.97 No.-

This paper aims to empirically illuminate the reason of the positive relationship between housing price and trading volume, one of anomalies in real estate market which cannot be explained by traditional economic theory presuming the rationality of human being, from a standpoint of bounded rationality. Based on the micro survey data on housing consumption psychology collected from the first quarter of 2011 to the second quarter of 2015, it investigates the relationship between each respondent’s recognized and predicted scales of quarterly housing price change and its difference between housing owners (potential sellers) and renters (potential buyers) as well as its difference between the periods of price increase and decrease, employing the spline regression model. Three major findings are as follows. First, a positive relationship is found between the recognized and predicted scales of quarterly housing price change, implying that adaptive expectation prevails, compared to rational expectation. Second, wishful thinking is also detected because the owners (renters) predict relatively smaller (larger) decrease in the period of price depreciation, but larger (smaller) increase in the period of price appreciation. As the result the predicted scale of the owners is higher than that of the renters in both periods of price depreciation and appreciation, but the difference is relatively much larger when the price decreases than when it increases. This is the third and the most important finding that verifies the existence of loss aversion of sellers, which causes the asymmetry characterized by small (large) trading volume coupled with price decrease (increase). 본 논문은 인간의 합리성에 기초한 전통 경제이론으로는 설명할 수 없는 부동산시장의 이례적 현상 중의 하나로서 주택의 가격과 거래량 사이에 나타나는 양의 상관관계를 제한적 합리성에 의한 손실회피성 등 시장참여자의 행태를 통해 실증적으로 규명하는 데 목적이 있다. 이를 위해 국토연구원의 부동산시장 소비자 심리조사의 개별 응답자 단위 미시자료를 이용하여 과거 주택가격 변화의 인지수준과 미래 예측수준 사이의 관계가 주택의 잠재적 매도자인 소유자와 잠재적 매수자인 임차인에 따라, 그리고 가격상승기와 하락기에 따라 어떠한 차이를 보이는지를 스플라인 회귀분석을 통해 분석하였다. 실증분석의 결과, 먼저 가격 변화의 인지수준과 예측수준 사이에는 양의 상관관계가 존재하는 것으로 밝혀졌다. 이는 적응적 기대의 가격기대심리가 작용하고 있음을 확인해 주는 결과로, 가격상승기(하락기)에는 소유자와 임차인 모두 가격이 지속적으로 상승(하락)할 것으로 기대하고 거래에 임할 것임을 의미한다. 문제는 소유자와 임차인이 각각 ‘어느 정도’ 상승 또는 하락할 것으로 기대하고 있느냐로, 소유자의 입장에서는 가격상승기에 가격이 더 상승하고 하락기에 덜 하락하기를, 반대로 임차인의 입장에서는 상승기에 덜 상승하고 하락기에 더 하락하기를 기대하는 희망적 사고가 발견된다. 이로 인해 가격상승기와 하락기에 모두 매도용의가격이 매수용의가격보다 높게 형성되지만, 중요한 점은 가격하락기의 차이가 상승기에 비해 비대칭적으로 더 크게 나타난다는 사실이다. 이는 결국 최근 가격을 기준으로 할 때 매도자의 입장에서 가격상승에 따른 이득보다 하락에 따른 손실을 심리적으로 더 크게 느끼는 손실회피성에 기인하는 바, 이에 따라 가격하락기에는 소유자가 기대하는 하락폭이 비대칭적으로 더 크게 줄어들기 때문이다. 이러한 결과는 매도자의 손실회피성으로 인해 가격하락기에는 매도용의가격이 매수용의가격보다 높아 거래가 이루어지기 힘들다는 기존의 해석을 실증적으로 뒷받침한다.

분층 식피술에 사용할 수 있는 간단하고, 효과적인 고정방법

박동하,김주형,박명철,이일재 大韓成形外科學會 2004 Archives of Plastic Surgery Vol.31 No.2

더 많은, 더 나은, 더 고른 공공주택이 필요한 시대

박동하,최혜진 경기연구원 2022 이슈&진단 Vol.- No.514

두개안면골기형 질환의 치료: 두개골조기유합증과 자세 성사두증

박동하,윤수한 대한의사협회 2012 대한의사협회지 Vol.55 No.9

After the publication of the modern Virchow’s suture fusion hypothesis regarding craniosynostosis,various types of linear craniotomy have been developed. However, after the Moss’s functional matrix hypothesis became known, extensive cranial remodeling surgical procedures have emerged. However, a recent view that the cause of craniosynostosis may be due to gene mutation has led to a tendency toward treating craniosynostosis with minimally invasive surgery including endoscopic surgery and distraction procedures that utilize springs or distractors. As nonsyndromic craniosynostoses are accompanied by unilateral coronal or lambdoid craniosynostosis,and syndromic craniosynostoses are accompanied by facial anomalies, it is presumed that cranial anomalies are accompanied by facial anomalies. However, the “back to sleep”campaign that was initiated in the 1990’s in order to prevent infantile death syndrome led to research in the dramatic increase in the incidence of craniofacial anomalies, which resulted in the establishment of the positional plagiocephaly concept, which has also been ascertained in animal experiments. Despite these advances, the basic problem of whether craniosynostosis is simply a cosmetic anomaly or whether it is a neurological disease that is accompanied by complications such as increased intracranial pressure has not been resolved. The consequent confusion has prevented establishment of the optimal timing for surgery and the type of surgical procedure. The authors of this study review the history of craniosynostosis treatment and attempt to clarify the situation pertaining to the surgical treatment concepts and limitations.

부천시 나홀로 아파트의 계획적 관리방안 연구

박동하,장윤배,정지이 경기연구원 2022 정책연구 Vol.- No.-

The purpose of this study is to identify the current situation of stand-alone apartments, which have recently increased significantly in Bucheon city, and to derive a management plan. In Bucheon, considering the aging situation of low-rise residences, geographical requirements close to Seoul, and development of new stations, there is a high possibility that stand-alone apartments will be built in the future. In particular, in Bucheon, the number of stand-alone apartments with less than 30 households being built through building permits has increased significantly in recent years. The problem of stand-alone apartments in Bucheon is the lack of safety and convenience, which are basic requirements for housing, and stand-alone apartments do not play a role in improving the problems of low-rise residential areas. There is no clear definition of stand-alone apartments because it is not a legal term, and it is necessary to define stand-alone apartments focusing on the problems that occur in Bucheon. The definition of stand-alone apartments in Bucheon is defined as an apartment with less than 100 households that faces a road less than 10 m and has little contribution to solving infrastructure problems such as pedestrians and parking. This study proposes to induce the securing of infrastructure by strengthening construction standards in order to overcome the current situation in which stand-alone apartments do not play a role in improving local infrastructure problems. In the case of apartments with less than 30 households receiving a building permit through the amendment of the ordinance, it is proposed to raise the parking lot installation standard by about 20% from the current parking lot installation standard. Besides, It is proposed to consider providing incentives such as floor area ratio as a supplement to the occurrence of retreat of construction lines to secure pedestrian paths. Stand-alone apartments are a type of housing whose supply and demand vary greatly depending on the economic situation, so it is necessary to induce them to have the elements for minimum housing in the long term. In addition, through the revision of the Bucheon City Ordinance, it is proposed to amend the ordinance so that buildings that fall under the definition of stand-alone apartment are subject to architectural deliberation. In addition, it is suggested to use a checklist that can be used during the review so that the architectural review can play a proper role. Since a lot of stand-alone apartments are built in areas where small-scale maintenance projects are carried out, it is necessary to establish the basic principles of management through the basic urban and residential environment maintenance plan. Bucheon needs to present a blueprint for the future of low-rise residential buildings to improve the fundamental management plan for stand-alone apartments, and to reorganize the city management plan system accordingly. The current use zoning system has a limit in inducing harmonious development with the surrounding area because density is more important rather than use. Bucheon needs to choose a strategy from among various use area improvement measures such as flexible use zoning system or subdivision of use area.