최우도 모형을 이용한 수위-유량곡선식 개발

다국어 초록 (Multilingual Abstract)

The non-linear least squares model((NLSM) has long been the standard technique used by hydrologists for constructing rating curves. The reasons for its adaptation are vague, and its appropriateness as a method of describing discharge measurement uncertainty has not been well investigated. It is shown in this paper that the classical method of NLSM can model only a very limited class of variance heterogeneity. Furthermore, this lack of flexibility often leads to unaccounted heteroscedasticity, resulting in dubious values for the rating curve parameters and estimated discharge.
By introducing a heteroscedastic maximum likelihood model(HMLM), the variance heterogeneity is treated more generally. The maximum likelihood model stabilises the variance better than the NLSM approach, and thus is a more robust and appropriate way to fit a rating curve to a set of discharge measurements.

목차 (Table of Contents)

• Abstract
• Ⅰ. 서론
• Ⅱ. 수위-유량 곡선식
• Ⅲ. 적용 및 곡선 추정
• Ⅳ. 결론
• 참고문헌