successive rotation
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PLoS ONE ◽  
2015 ◽  
Vol 10 (7) ◽  
pp. e0132858 ◽  
Author(s):  
Xiaoqiong Li ◽  
Duo Ye ◽  
Hongwen Liang ◽  
Hongguang Zhu ◽  
Lin Qin ◽  
...  

2015 ◽  
Vol 11 (1) ◽  
pp. 115-139
Author(s):  
Jaishree Prabha Karna ◽  
Dilip Chandra Nath

Abstract The present work is an attempt to study the effect of non-response at both occasions in search of good successive (rotation) sampling over two occasions. A chain-type ratio and regression estimator has been proposed for estimating the population mean at current occasion in presence of non-response at both the occasion in two-occasion successive (rotation) sampling. Detail behaviors of proposed estimators have been studied. Proposed estimators are compared with the estimators for the same situations but in the absence of non-response. Performances of the proposed estimators have been demonstrated via empirical studies.


2006 ◽  
Vol 38 (6) ◽  
pp. 1024-1027
Author(s):  
Da-Jun Shu ◽  
Da-Wei Li ◽  
Wei Pan ◽  
Hong-Min Li ◽  
Ru-Wen Peng ◽  
...  

1983 ◽  
Vol 105 (1) ◽  
pp. 78-87
Author(s):  
Hiram Albala ◽  
David Pessen

Based on the displacement equations for the general n-bar, single-loop spatial linkage, obtained elsewhere, the displacement analysis for a special case of the 7R spatial mechanism is carried out. In this mechanism the successive rotation axes are perpendicular to each other, the distances between axes 3-4, 4-5, 5-6, are equal and the offsets along axes 4 and 5 are zero, when input axis is labeled axis 1. In this fashion, there still remain nine free linkage parameters. Input-output equation is of the eighth-degree in the tangent of half the output angle. A particular case of this one, where all the distances between axes are equal and all the offsets along axes are zero, leads to an input-output equation of the fourth-degree in the same quantity, with a maximum of four closures. This mechanism resulted to be a double-rocker.


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