Uniformly most powerful unbiased test for shoulder condition in point transect sampling

2011 ◽  
Vol 53 (4) ◽  
pp. 1035-1044
Author(s):  
Riccardo Borgoni ◽  
Piero Quatto
2006 ◽  
Vol 43 (2) ◽  
pp. 377-384 ◽  
Author(s):  
STEPHEN T. BUCKLAND ◽  
RON W. SUMMERS ◽  
DAVID L. BORCHERS ◽  
LEN THOMAS

Biometrics ◽  
2010 ◽  
Vol 66 (4) ◽  
pp. 1247-1255 ◽  
Author(s):  
T. A. Marques ◽  
S. T. Buckland ◽  
D. L. Borchers ◽  
D. Tosh ◽  
R. A. McDonald

Biometrics ◽  
1998 ◽  
Vol 54 (2) ◽  
pp. 606 ◽  
Author(s):  
Y. P. Mack ◽  
Pham X. Quang

2020 ◽  
pp. 1-7
Author(s):  
Noryanti Muhammad ◽  
Gamil A.A. Saeed ◽  
Wan Nur Syahidah Wan Yusoff

One of the most important sides of life is wildlife. There is growing research interest in monitoring wildlife. Line transect sampling is one of the techniques widely used for estimating the density of objects especially for animals and plants. In this research, a parametric estimator for estimation of the population abundance is developed. A new parametric model for perpendicular distances for detection function is utilised to develop the estimator. In this paper, the performance of the parametric model which was developed using a simulation study is presented. The detection function has non-increasing curve and a perfect probability at zero. Theoretically, the parametric model which has been developed is guar-anteed to satisfy the shoulder condition assumption. A simulation study is presented to validate the present model. Relative mean error (RME) and Relative Bias (RB) are used to compare the estimator with well-known existing estimators. The results of the simulation study are discussed, and the performance of the proposed model shows promising statistical properties which outperformed the existing models. Keywords: detection function, line transect data, parametric model


2021 ◽  
Vol 71 (5) ◽  
pp. 1309-1318
Author(s):  
Abbas Eftekharian ◽  
Morad Alizadeh

Abstract The problem of finding optimal tests in the family of uniform distributions is investigated. The general forms of the uniformly most powerful and generalized likelihood ratio tests are derived. Moreover, the problem of finding the uniformly most powerful unbiased test for testing two-sided hypothesis in the presence of nuisance parameter is investigated, and it is shown that such a test is equivalent to the generalized likelihood ratio test for the same problem. The simulation study is performed to evaluate the performance of power function of the tests.


Sign in / Sign up

Export Citation Format

Share Document