03173nam a2200409 4500 20260818112847.0 270898 th eng .b10262234 AIT Thesis no. CA-84-12 Kuo, Jung-hua Evaluation of the methods of parameter estimation for the generalized gamma distribution Bangkok : Asian Institute of Technology, 1984 ix, 66 p. Thesis ; no. CA-84-12 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 1984 In this study, the Generalized Gamma (GG) distribution was analyzed. The properties of the distribution were first considered. It was shown that the GG distribution has different forms depending on the values of its parameters, and many useful distributions can be treated as special cases of it. Specifically, the Powered Gamma distribution is obtained when the power parameter is positive, while the Kritskii-Menkel distribution corresponds to the case where the expected value of the GG variable is equal to unity. Seven important methods for parameter estimation were then evaluated by using many sets of actual data on annual floods and annual maximum rainfall amounts along with the following criteria : percent standard error of the T-year event, percent standard errors of the parameters and the resiliency of under- or over- designed values. Related computer programs were developed, incorporating new algorithms for computing useful functions such as the incomplete gamma, digamma and trigamy functions. From the data sets and criteria used, it was found that the method based on the mean of the GG variable X, and the mean and variance of Y + in X turns out to be the best in most cases. The next desirable method is the maximum likelihood method. Hydrology Statistical methods Huynh, Ngoc Phien, Chairperson Kanchit Malaivongs, Examination Committee Wang, Tsan-Wen, Examination Committee Taiwan Cement Corporation, R.O.C., Scholarship Donor Asian Institute of Technology. Thesis ; no. CA-84-12 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B20826 .b10262234 mnait x 240701 2 951012 m a x 0 mnait mnait mnarc 20 40 Barcode : 30050003147096 CREATED : 1994-05-17 RECORD # : i10322632 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003147088 CREATED : 1994-05-17 RECORD # : i10322644 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160064522 CREATED : 2016-03-06 RECORD # : i13016738 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 41369 41369 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. CA-84-12 30050003147096 2026-08-18 11:28:47 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. CA-84-12 30050003147088 2026-08-18 11:28:47 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. CA-84-12 30050160064522 2026-08-18 11:28:47 2026-08-18 40