은나노 입자가 전단력하의 치주인대세포 유전자 발현에 미치는 영향

학위논문(박사) --서울대학교 대학원 :치의학과(치주과학전공),2008. 8.Docto

Scaling and root planing with concomitant subgingival curettage

Thesis (master`s)--서울대학교 대학원 :치의학과 치주과학 전공,1999.Maste

비외과적 치주치료시 30% Minocycline을 함유한 Polycaprolactone Strip(미노클린 첨부제)의 부가적 효과

이 연구는 1998년도 서울대학교병원임상연구비의 지원에 의한 것입니다

Investigating residents' perceptions of green retrofit program in mature residential estates: The case of Singapore

Over the past decade, green retrofit has been gaining popularity around the world, and considerable buildings have been retrofitted to improve their energy efficiency. So far, however, limited was known about the residents' perceptions of those completed green retrofit programs. Thus, this study investigated the residents' perceptions of the green retrofit programs and explored their willingness to extend the green retrofit into individual houses. To achieve these goals, a questionnaire survey was administered to 90 residents from a mature public residential estate in Singapore which just completed a pilot green retrofit program. Survey results showed that 86 percent of respondents were satisfied with the green retrofit program, and in particular, the outdoor light emitting diode lighting was found to be the most satisfied green feature. The survey results also showed that more than 50 percent of respondents were supportive of having their individual houses undergo green retrofit and were willing to bear an upfront cost up to SGD 5000 (approximately USD 3540). Also, this study found that achieving cost savings from lower utility bills in the long run was the top motivation that drives residents to retrofit their houses, and an energy monitoring system was the most preferred green feature. Additionally, this study also came up with three practical recommendations to improve upon the current green retrofit program. This study contributes to the body of knowledge by making a thorough investigation of residents' perceptions of green retrofit programs. Also, the findings from this study can help authorities upgrade their green retrofit programs to create more energy efficiency benefits for the residents. (C) 2017 Elsevier Ltd. All rights reserved.OAIID:RECH_ACHV_DSTSH_NO:T201725016RECH_ACHV_FG:RR00200001ADJUST_YN:EMP_ID:A079198CITE_RATE:3FILENAME:[Published] 2017_HI_Hwang et al._SSCI_Investigating Residents Perceptions of Green Retrofit Program in Mature Residential Estates The Case of Singapore_브레인풀.pdfDEPT_NM:건설환경공학부EMAIL:[email protected]_YN:YFILEURL:https://srnd.snu.ac.kr/eXrepEIR/fws/file/5f1085fd-0d03-4798-b0f1-ee244a13fc5e/linkN

An exploratory analysis of risks in green residential building construction projects: The case of Singapore

10.3390/su9071116Sustainability (Switzerland)97111

The Relationship between Unbilled Accounts Receivable and Financial Performance of Construction Contractors

Operating profit is one of the most important measures in financial statements to evaluate a organizational performance. In the construction industry, however, the profit has a possibility to be misestimated as a loss and can be included in Unbilled Accounts Receivable (UAR) and shown as a profit; this is due to the uncertainty of predicting a total construction cost and project progress on which the calculation of profit is based. UAR results from the different perceptions regarding project progress between clients and contractors and can include costs related to loss that cannot be acknowledged as a progress. Therefore, UAR can be a significant clue to understanding estimation errors of a contractor’s financial performance data. This study investigated the possibility of estimation error of contractors’ operating profit by analyzing the relationship between UAR and other relevant financial performance measures. The accounting data of 41 Korean major contractors was collected and analyzed based on the correlation analysis. The results of this study implies that the profit of construction companies has the possibility to contain estimation errors, causing a significant variance in the process of adjusting the evaluation errors at the end of projects, which can cause unexpected losses to investors. In addition, this study found that the UAR containing estimation errors could be different depending on market in which contractors operate; therefore, when dealing with contractors’ financial performance data, it is necessary to discern whether their profit data contains distortion and, in the case that errors are included, appropriate data preprocessing should be conducted for more reliable and sustainable construction investment and project management