scholarly journals Slipping Anchor?: Testing the Vignettes Approach to Identification and Correction of Reporting Heterogeneity

2011 ◽  
Vol 46 (4) ◽  
pp. 875-906 ◽  
Author(s):  
Teresa Bago d'Uva ◽  
Maarten Lindeboom ◽  
Owen O'Donnell ◽  
Eddy van Doorslaer
Author(s):  
Alex Micael Dantas de Sousa ◽  
Yuri Daniel Jatobá Costa ◽  
Luiz Augusto da Silva Florêncio ◽  
Carina Maria Lins Costa

abstract: This study evaluates load variations in instrumented prestressed ground anchors installed in a bored pile retaining wall system in sandy soil. Data were collected from instrumentation assembled in the bonded length of three anchors, which were monitored during pullout tests and during different construction phases of the retaining wall system. Instrumentation consisted of electrical resistance strain gauges positioned in five different sections along the bonded length. Skin friction distributions were obtained from the field load measurements. Results showed that the skin friction followed a non-uniform distribution along the anchor bonded length. The mobilized skin friction concentrated more intensely on the bonded length half closest to the unbonded length, while the other half of the bonded length developed very small skin friction. The contribution of the unbonded length skin friction to the overall anchor capacity was significant and this should be accounted for in the interpretation of routine anchor testing results. Displacements applied to the anchor head were sufficient to mobilize the ultimate skin friction on the unbonded length, but not on the bonded length. Performance of loading-unloading stages on the ground anchor intensified the transfer of load from the unbonded length to the bonded length. Long-term monitoring of the anchor after lock-off revealed that the load at the anchor bonded length followed a tendency to reduce with time and was not significantly influenced by the retaining wall construction phases.


2006 ◽  
Vol 15 (9) ◽  
pp. 965-981 ◽  
Author(s):  
Fabrice Etilé ◽  
Carine Milcent

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Brit S. Schneider ◽  
Udo Schneider

The importance of the individual’s health behaviour for the health production process is beyond controversy. Health relevant behaviour can be viewed as a key variable in the health production process. Changes in the behaviour may influence individual’s assessment of health. Following this idea, we use German microdata to identify determinants of smoking, drinking, and obesity and their impact on health. Our empirical approach allows for the simultaneity of behaviours and self-reported health. In addition, we account for endogeneity of health behaviours and take aspects of reporting heterogeneity of self-reported health into account. We find that health behaviour is directly related to the socioeconomic status and observe gender-specific differences in the determinants of drinking, smoking, and heavy body weight in particular. The influence on health is also gender specific. While we do not find any impact of smoking, overweight is relevant only for males and no clear pattern for alcohol exists.


2016 ◽  
Author(s):  
William H. Greene ◽  
Mark N. Harris ◽  
Bruce Hollingsworth ◽  
Rachel J. Knott ◽  
Nigel Rice

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