教師資料查詢 | 類別: 期刊論文 | 教師: 虞國興 YU GWO-HSING (瀏覽個人網頁)

標題:Detection of nonstationarity in hydrologic time series
學年75
學期1
出版(發表)日期1986/09/01
作品名稱Detection of nonstationarity in hydrologic time series
作品名稱(其他語言)
著者Rao, A. Ramachandra; Yu, Gwo-hsing
單位淡江大學水資源及環境工程學系
出版者Catonsville: Institute for Operations Research and Management Sciences (INFORMS)
著錄名稱、卷期、頁數Management Science 32(9), pp.1206-1217
摘要Detection of changes in hydrologic time series due to intervention by man or natural causes is an important problem. Although intervention analysis has been used in the recent past to analyze nonstationary hydrologic time series, the necessity to specify a model of change and an initial time at which the time series has started to change are obvious disadvantages of intervention analysis. An alternative to intervention analysis is a method which is based on spectral characteristics and an exponential moving average model.

The basic objective of the research discussed in the present paper is to test this alternative method. The model is tested by using synthetic uncorrelated and correlated data with step and gradual changes as well as by using real hydrologic time series. The sensitivity of the model to different parameters is also explored. The alternative model is found to be quite accurate in detecting changes in hydrologic time series.
關鍵字
語言英文
ISSN0025-1909;1526-5501
期刊性質國外
收錄於
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式
相關連結
Google+ 推薦功能,讓全世界都能看到您的推薦!