Orthogonal parameters for anisotropic velocity analysis

2006 ◽  
Author(s):  
Paul J. Fowler ◽  
Alexander Jackson ◽  
Bruce Hootman
Keyword(s):  
Velocity Analysis ◽  
Orthogonal Parameters

Settling Velocity Analysis for Stormwater Solids in Urban Drainage BMPs

2009 ◽  
Vol 2009 (9) ◽  
pp. 6402-6413
Author(s):  
G. Ying ◽  
C. Berretta ◽  
I. Gnecco ◽  
G. Becciu ◽  
J. Sansalone
Keyword(s):  
Settling Velocity ◽  
Urban Drainage ◽  
Velocity Analysis

scholarly journals A haptic laparoscopic trainer based on affine velocity analysis: engineering and preliminary results

BMC Surgery ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Benjamin De Witte ◽  
Charles Barnouin ◽  
Richard Moreau ◽  
Arnaud Lelevé ◽  
Xavier Martin ◽  
...  
Keyword(s):  
Motor Skills ◽  
Haptic Feedback ◽  
High Fidelity ◽  
Velocity Analysis ◽  
Self Assessment ◽  
Laparoscopic Skills ◽  
Effective Feedback ◽  
Simulation Based ◽  
Good Trade ◽  
Laparoscopic Techniques

Abstract Background There is a general agreement upon the importance of acquiring laparoscopic skills outside the operation room through simulation-based training. However, high-fidelity simulators are cost-prohibitive and elicit a high cognitive load, while low-fidelity simulators lack effective feedback. This paper describes a low-fidelity simulator bridging the existing gaps with affine velocity as a new assessment variable. Primary validation results are also presented. Methods Psycho-motor skills and engineering key features have been considered e.g. haptic feedback and complementary assessment variables. Seventy-seven participants tested the simulator (17 expert surgeons, 12 intermediates, 28 inexperienced interns, and 20 novices). The content validity was tested with a 10-point Likert scale and the discriminative power by comparing the four groups’ performance over two sessions. Results Participants rated the simulator positively, from 7.25 to 7.72 out of 10 (mean, 7.57). Experts and intermediates performed faster with fewer errors (collisions) than inexperienced interns and novices. The affine velocity brought additional differentiations, especially between interns and novices. Conclusion This affordable haptic simulator makes it possible to learn and train laparoscopic techniques. Self-assessment of basic skills was easily performed with slight additional cost compared to low-fidelity simulators. It could be a good trade-off among the products currently used for surgeons' training.

scholarly journals High-resolution velocity analysis and program design based on Bootstrap algorithm

2019 ◽  
Vol 227 ◽  
pp. 042029
Author(s):  
Dechao Cai ◽  
Guifang Fa ◽  
Jia Li ◽  
Xing Xing ◽  
Yanjing Yi
Keyword(s):  
High Resolution ◽  
Program Design ◽  
Velocity Analysis ◽  
Bootstrap Algorithm

Probability distributions and orthogonal parameters

1950 ◽  
Vol 46 (2) ◽  
pp. 281-284 ◽  
Author(s):  
V. S. Huzurbazar
Keyword(s):  
Probability Density Function ◽  
Probability Density ◽  
Density Function ◽  
Probability Distributions ◽  
Orthogonal Parameters ◽  
Image Position

Let f(x, αi) be the probability density function of a distribution depending on n parameters αi(i = 1,2, …, n). Then following Jeffreys(1) we shall say that the parameters αi are orthogonal if

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