This papers analyzes the reliability of radius of curvature estimates from tactile sensor data. A linear elastic model is used to t the indenter parameters, load, location, and curvature, to the sensor output. It was found that both contact models and calibration techniques could dramatically eeect the bias and variance of the estimated indenter parameters. The Fourier series is found to be an ...

Using the visual search method, we show that stimuli that contain curvature discontinuities (i.e., points where the second derivative along an image contour is not defined) are easily found among stimuli containing only smooth changes in curvature. Curved stimuli that lack curvature discontinuities, however, are difficult to find among distractors that have them. These results suggest that the ...

The objective of this study was to determine the bioelectric activity of the spinal muscles on both sides of the primary curvature, both statically (in a habitual posture) and dynamically (in an active attempt to correct the curvature). The study comprised two groups: one group of 110 children and adolescents aged 6 to 17 (mean age 11.5 ± 3.0) with clinical symptoms of scoliosis (as per Cobb) a...

introduction: complete knowledge of root canal curvature is a critical factor in successful dental treatment .the aim of this study was to investigate the direction, radius and degree of curvature of maxillary anterior teeth and the relation between radius and degree of curvature in babol city. methods &materials;: this study was performed on 242 anterior teeth radiographs were taken by periapi...

The index of a metric plays significant roles in differential geometry as it generates variety of vector fields such as space-like, time-like, and light-like fileds. With the help of these vector fields, we establish interesting properties on ( )-Sasakian manifolds, which was introduced by Bejancu and Duggal [1] and further investigated by Xufeng and Xiaoli [2]. Since Sasakian manifolds with in...

In the pylorus ligated rat vagotomy has been attempted by chemoneurolysis with alcohol. Surgical truncal vagotomy reduced the intragastric acid produced in a five-hour period from 310 +/- 17.6 (SD) mumol to 5.4 +/- 2.4 mumol with a marked reduction in the ulcer score. Injection of 30% alcohol in the region of the vagal trunks at the level of the lower oesophagus produced a marked reduction in g...

The dispersion properties of the direct space-to-time pulse shaper are investigated for the first time to our knowledge. We demonstrate that phase-front curvature of the input spatial profile leads to a chirp in the output temporal waveform, which one can compensate for by varying the separation between the pulse-shaping lens and slit. Furthermore, the output intensity profile remains invariant...

Linguistic grammars do a good job of elucidating the lexical categories and phrasal units of the languages they model. Certain recurrent Connectionist networks can model similar data but it is not easy to discern the abstract structures of the resulting representations. Hierarchical clustering is helpful in this regard, but it often produces implausible clusters and there seems to be no princip...

We derive new, sharp lower bounds for certain curvature functionals on the space of Riemannian metrics of a smooth compact 4manifold with a non-trivial Seiberg-Witten invariant. These allow one, for example, to exactly compute the infimum of the L2-norm of Ricci curvature for all complex surfaces of general type. We are also able to show that the standard metric on any complex hyperbolic 4manif...