Completeness conditions for sufficient statistics in shift families and unification of estimation procedures

1997 ◽  
Vol 83 (3) ◽  
pp. 427-433
Author(s):  
P. N. Sapozhnikov
Keyword(s):  
Sufficient Statistics ◽  
Estimation Procedures

Sufficient statistics in team control problems with a common past

1982 ◽  
Author(s):  
G. Casalino ◽  
F. Davoli ◽  
R. Minciardi ◽  
R. Zoppoli
Keyword(s):  
Control Problems ◽  
Sufficient Statistics ◽  
Team Control

DISCUSSION. THE INVESTIGATION OF FLOOD ESTIMATION PROCEDURES FOR PAPUA NEW GUINEA.

1975 ◽  
Vol 59 (3) ◽  
pp. 549-559
Author(s):  
BN GUNTHER ◽  
MR HASAN ◽  
TM PRUS CHACINSKI ◽  
ARB EDGECOMBE ◽  
MJ HALL ◽  
...  
Keyword(s):  
Papua New Guinea ◽  
New Guinea ◽  
Estimation Procedures ◽  
Flood Estimation

Effects of Weld Strength Mismatch on Estimation Procedures for J and CTOD Fracture Parameters Using SE(B) Specimens

2007 ◽  
Author(s):  
Gustavo H. B. Donato ◽  
Claudio Ruggieri
Keyword(s):  
Mouth Opening ◽  
Estimation Procedure ◽  
Primary Objective ◽  
Weld Strength ◽  
Crack Mouth Opening Displacement ◽  
Opening Displacement ◽  
Fracture Parameters ◽  
Wide Range ◽  
Estimation Procedures ◽  
Fracture Specimens

This work presents an exploratory development of J and CTOD estimation procedures for welded fracture specimens under bending based upon plastic eta factors and plastic rotation factors. The techniques considered include: i) estimating J and CTOD from plastic work and ii) estimating CTOD from the plastic rotational factor. The primary objective is to gain additional understanding on the effect of weld strength mismatch on estimation techniques to determine J and CTOD fracture parameters for a wide range of a/W-ratios and mismatch levels. Very detailed non-linear finite element analyses for plane-strain models of SE(B) fracture specimens with center cracked, square groove welds provide the evolution of load with increased load-line displacement and crack mouth opening displacement which are required for the estimation procedure. The results show that levels of weld strength mismatch within the range ±20% mismatch do not affect significantly J and CTOD estimation expressions applicable to homogeneous materials, particularly for deeply cracked fracture specimens. The present analyses, when taken together with previous studies, provide a fairly extensive body of results which serve to determine parameters J and CTOD for different materials using bend specimens with varying geometries and mismatch levels.

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