scholarly journals Low-Storage Time Integrators with Improved Accuracy and Stability Properties

2010 ◽  
Author(s):  
David I. Ketcheson ◽  
Theodore E. Simos ◽  
George Psihoyios ◽  
Ch. Tsitouras
Keyword(s):  
Storage Time ◽  
Stability Properties ◽  
Time Integrators ◽  
Improved Accuracy ◽  
Accuracy And Stability

scholarly journals Physicochemical, sensory and stability properties of a milk caramel spread sweetened with a glucose- galactose syrup from sweet whey

2019 ◽  
Vol 72 (3) ◽  
pp. 8995-9005
Author(s):  
Sandra Liliana Vargas-Díaz ◽  
José U. Sepulveda-V ◽  
Hector J. Ciro-V ◽  
Ana Juleza Mosquera ◽  
Edinson Bejarano
Keyword(s):  
Environmental Impact ◽  
Functional Properties ◽  
Circular Economy ◽  
Storage Time ◽  
The Other ◽  
Soluble Solids ◽  
Lower Amount ◽  
Sensory Level ◽  
Stability Properties ◽  
Sweet Whey

Whey is a dairy industry by-product with an adverse environmental impact; therefore, obtaining sweeteners from it promote a circular economy and is an alternative to mitigate the environmental problems. The aim of this research was to evaluate the effect of different inclusions (10%, 20%, and 30%) of Glucose-Galactose syrup (GGS), obtained from whey, on the physicochemical, sensory, and stability properties of a milk caramel spread. Results showed that the syrup has a significant effect on the techno-functional properties of the final product since it turns into a darker color when the concentrations of syrup increased. Besides, the yield of the product was higher (41.4%), providing a higher volume. In a replacement of 30% GGS, the milk caramel spread at a lower amount of soluble solids achieved a texture similar to the other inclusions. At a sensory level, consumers accepted all formulations with an acceptance higher than 90%. During the storage time (60 d), different evaluated parameters increased.

Stability versus accuracy for an explicit wavefield extrapolation operator

Geophysics ◽  
1993 ◽  
Vol 58 (2) ◽  
pp. 277-283 ◽  
Author(s):  
Atul Nautiyal ◽  
Samuel H. Gray ◽  
N. D. Whitmore ◽  
John D. Garing
Keyword(s):  
Fourier Transform ◽  
Unconditional Stability ◽  
Space Domain ◽  
Stability Properties ◽  
Depth Migration ◽  
Frequency Space ◽  
Wavefield Extrapolation ◽  
Extrapolation Operator ◽  
Accuracy And Stability

Wavefield extrapolation by recursive (depth‐by‐ depth) application of a convolutional operator in the frequency‐space domain, commonly used for depth migration in a laterally‐varying earth, has interesting accuracy and stability properties. We analyze these properties by investigating the operator and its spatial Fourier transform. In particular, we show that the instability caused by spatially truncating the operator can be remedied unconditionally by applying an appropriately chosen spatial taper. However, unconditional stability is gained only at the expense of accuracy. We also identify frequencies and depth extrapolation step sizes for which the problems of accuracy or stability are the most pronounced.

scholarly journals Accuracy of robotic coil positioning during transcranial magnetic stimulation

2019 ◽  
Author(s):  
Stefan M. Goetz ◽  
I. Cassie Kozyrkov ◽  
Bruce Luber ◽  
Sarah H. Lisanby ◽  
David L. K. Murphy ◽  
...  
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Magnetic Stimulation ◽  
Degrees Of Freedom ◽  
Positioning Systems ◽  
Manual Adjustment ◽  
Pressure Feedback ◽  
Neuronavigation System ◽  
Position And Orientation ◽  
Improved Accuracy ◽  
Accuracy And Stability

AbstractObjectiveRobotic positioning systems for transcranial magnetic stimulation (TMS) promise improved accuracy and stability of coil placement, but there is limited data on their performance. This text investigates the usability, accuracy, and limitations of robotic coil placement with a commercial system, ANT Neuro, in a TMS study.Approach21 subjects underwent a total of 79 TMS sessions corresponding to 160 hours under robotic coil control. Coil position and orientation were monitored concurrently through an additional neuronavigation system.Main ResultsRobot setup took on average 14.5 min. The robot achieved low position and orientation error with median 1.34 mm and 3.48°. The error increased over time at a rate of 0.4%/minute for both position and orientation.SignificanceAfter the elimination of several limitations, robotic TMS systems promise to substantially improve the accuracy and stability of manual coil position and orientation. Lack of pressure feedback and of manual adjustment of all coil degrees of freedom were limitations of this robotic system.

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