Unsubstantial Health and Sports Monitoring Reliability of Commercial Fitness Tracker Bracelets Induced by Their All-in-One Sensing Unit Approach - Experimental Evaluation of Measurement Accuracy in Dynamic and in Steady Physical Effort Scenarios

2019 ◽  
pp. 55-74
Author(s):  
Hans Weghorn
Keyword(s):  
Experimental Evaluation ◽  
Measurement Accuracy ◽  
Physical Effort ◽  
Monitoring Reliability ◽  
Fitness Tracker

Methods for Restricting Maximum Exposure Rate in Computerized Adaptative Testing

Methodology ◽  
2007 ◽  
Vol 3 (1) ◽  
pp. 14-23 ◽  
Author(s):  
Juan Ramon Barrada ◽  
Julio Olea ◽  
Vicente Ponsoda
Keyword(s):  
Measurement Accuracy ◽  
Computerized Adaptive Testing ◽  
Computation Time ◽  
Adaptive Testing ◽  
Exposure Rate ◽  
Control Parameters ◽  
The Impact ◽  
Two Alternatives ◽  
Selection Of ◽  
Maximum Exposure

Abstract. The Sympson-Hetter (1985) method provides a means of controlling maximum exposure rate of items in Computerized Adaptive Testing. Through a series of simulations, control parameters are set that mark the probability of administration of an item on being selected. This method presents two main problems: it requires a long computation time for calculating the parameters and the maximum exposure rate is slightly above the fixed limit. Van der Linden (2003) presented two alternatives which appear to solve both of the problems. The impact of these methods in the measurement accuracy has not been tested yet. We show how these methods over-restrict the exposure of some highly discriminating items and, thus, the accuracy is decreased. It also shown that, when the desired maximum exposure rate is near the minimum possible value, these methods offer an empirical maximum exposure rate clearly above the goal. A new method, based on the initial estimation of the probability of administration and the probability of selection of the items with the restricted method ( Revuelta & Ponsoda, 1998 ), is presented in this paper. It can be used with the Sympson-Hetter method and with the two van der Linden's methods. This option, when used with Sympson-Hetter, speeds the convergence of the control parameters without decreasing the accuracy.

The experimental evaluation of supervisory training

1970 ◽  
Author(s):  
Marc J. Wallace ◽  
William Weitzel
Keyword(s):  
Experimental Evaluation ◽  
Supervisory Training

Exertion of task-unrelated physical effort makes people more sensitive to nonconscious rewards

2011 ◽  
Author(s):  
Erik Bijleveld ◽  
Ruud Custers ◽  
Henk Aarts
Keyword(s):  
Physical Effort

Experimental Evaluation of the Dermoskeleton Concept: Addressing the Soldiers Overload Challenge

2012 ◽  
Author(s):  
Chris Ste-Croix ◽  
David Tack ◽  
Denis Boucher ◽  
Francois Ruel ◽  
Gilles Pageau ◽  
...  
Keyword(s):  
Experimental Evaluation
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