| Title |
Outlier Detection and Replacement for Vertical Wind Speed in the Measurement of Actual Evapotranspiration |
| Authors |
박천건(Park, Chun Gun) ; 임창수(Rim, Chang-Soo) ; 임광섭(Lim, Kwang-Suop) ; 채효석(Chae, Hyo-Sok) |
| DOI |
https://doi.org/10.12652/Ksce.2014.34.5.1455 |
| Keywords |
잠열플럭스;이상치;에디공분산;통계적 분석;IQR 규칙 Latent heat flux;Outliers;Eddy covariance;Statistical analysis;IQR rule |
| Abstract |
In Korea, public infrastructure projects employ "long term continuation (LTC) contracts," which require budgets to be reevaluated and re-appropriated annually throughout the multi-year life of the project. However, such contracts also make it susceptible to frequently changing government policies, in which budgets required for existing projects are allocated to new projects and thus does not provide a consistent stream of capital to multi-year projects. Each year, the KEC needs to attain government funds for construction of its multiple highway construction sites. Because it is difficult to know the amount that may be actually appropriated to KEC in a given year, it is in turn difficult to anticipate and provide sufficient funds necessary for construction to run smoothly and continuously. The lack of a good logic for appropriation has resulted in projects having a skewed distribution of capital. To get better budget appropriations from the central government, the KEC first needs a systemized approach that rationalizes the annual construction capital optimally required for its individual sites. The goal of this research was to devise a way that allows the KEC to determine and calculate the optimal construction costs that would be required for its individual construction sites on an annual basis. Both the optimal progress rate and the essential work types were assessed through a workshop with 24 professionals (KEC employees and contractors) who had extensive experience in KEC projects and also were currently working in these projects. |