We develop a family of locking-free elements for the Reissner– Mindlin plate using Discontinuous Galerkin techniques, one for each odd degree, and prove optimal error estimates. A second family uses conforming elements for the rotations and nonconforming elements for the transverse displacement, generalizing the element of Arnold and Falk to higher degree.

The behaviour of two well-known image registration techniques, namely the crosscorrelation and the phase-correlation algorithms, for input signals corrupted by additivewhite noise, is studied in the frequency domain. Useful expressions of the displacement measurement error variance are presented, which allow for the analysis of the accuracy of both methods.

{ The behaviour of two well-known image registration techniques, namely the cross-correlation and the phase-correlation algorithms, for input signals corrupted by additive white noise, is studied in the frequency domain. Useful expressions of the displacement measurement error variance are presented, which allow for the analysis of the accuracy of both methods.

A displacement measurement system fusing a low cost real-time kinematic global positioning system (RTK-GPS) receiver and a force feedback accelerometer is proposed for infrastructure monitoring. The proposed system is composed of a sensor module, a base module and a computation module. The sensor module consists of a RTK-GPS rover and a force feedback accelerometer, and is installed on a target...

Most predictive coding schemes for videoconferencing and multimedia employ block matching motion compensation. The algorithm is easily parallelised and thus readily implemented in VLSI using SIMD structures. The image frame is divided into a fixed number of square blocks, and for each block a search is conducted within a predefined window of an adjacent frame to find the best match. The accepta...

The contiguous rain area (CRA) method for spatial forecast verification is a features-based approach that evaluates the properties of forecast rain systems, namely, their location, size, intensity, and finescale pattern. It is one of many recently developed spatial verification approaches that are being evaluated as part of a Spatial Forecast Verification Methods Intercomparison Project. To bet...

PURPOSE We propose an absolute quantitation method for metabolites with strongly coupled spin systems using localized 2-dimensional (2D) constant-time correlation spectroscopy (CT-COSY). We also develop two methods for improving the quality of in vivo CT-COSY spectra. METHODS We substituted an image selected in vivo spectroscopy (ISIS) pulse for a 180° slice pulse in the CT-COSY module to dec...

In order to reduce the bit rate of video signals, the standardized coding techniques apply motion-compensated prediction in combination with transform coding of the prediction error. By mathematical analysis, it is shown that aliasing components are deteriorating the prediction efficiency. In order to compensate the aliasing, two-dimensional (2-D) and three-dimensional interpolation filters are...

When the head is unrestrained, the large amplitude gaze shifts are composed of coordinated eye and head movements. The position of the eyes at the onset of the gaze shift can alter the eye and head contributions to the movement. The movements of the eyes and head during the unrestrained-head gaze shift follow well-defined relationships. It is possible to predict the displacement of the eye and ...