INTRODUCTION: The use of the anterior cervical plates has improved the postoperative fusion rates following multiple level cases. There are a number of plates available today and each plate addresses a different design philosophy. Fixed angle plates maintain a constant angle between the screw and the plate and have been implicated in stress shielding of the interbody graft resulting in pseudoar...

The stability of the photon beam position on synchrotron beamlines is critical for most if not all synchrotron radiation experiments. The position of the beam at the experiment or optical element location is set by the position and angle of the electron beam source as it traverses the magnetic field of the bend-magnet or insertion device. Thus an ideal photon beam monitor would be able to simul...

The flow properties of powdery or granular filling substances for dangerous goods packagings are safety-relevant parameters. To specify the behaviour, angle repose is measured in recognized test centres Germany. Previous investigations performed on non-hazardous revealed that some methods currently used have disadvantages application. Additionally, occupational health and safety reasons, it was...

The spatial relationship between the angle of inclination of a seating system's backrest from the seat and the hip flexion angle has not been established for children with cerebral palsy. Therefore, the child's hip flexion angle should not be described as the angle between the seat and the backrest unless the relationship between the hip flexion angle and the backrest's angle of inclination is ...

‎for a given measure space $(x,{mathscr b},mu)$ we construct all measure spaces $(y,{mathscr c},lambda)$ in which $(x,{mathscr b},mu)$ is embeddable‎. ‎the construction is modeled on the ultrafilter construction of the stone--v{c}ech compactification of a completely regular topological space‎. ‎under certain conditions the construction simplifies‎. ‎examples are given when this simplification o...

Nanoscale surface topography evolution on Ge surfaces irradiated by 1 keV Kr+ ions is examined in both directions perpendicular and parallel to the projection of the ion beam on the surface. Grazing incidence small angle x-ray scattering is used to measure in situ the evolution of surface morphology via the linear dispersion relation. A transition from smoothing (stability) to pattern-forming i...

BACKGROUND Debate exists on the proper relation of the anterior cruciate ligament (ACL) footprint with the intercondylar notch in anatomic ACL reconstructions. Patient-specific graft placement based on the inclination of the intercondylar roof has been proposed. The relationship between the intercondylar roof and native ACL footprint on the tibia has not previously been quantified. HYPOTHESIS...

Recently, many l1-norm based PCA methods have been developed for dimensionality reduction, but they do not explicitly consider the reconstruction error. Moreover, they do not take into account the relationship between reconstruction error and variance of projected data. This reduces the robustness of algorithms. To handle this problem, a novel formulation for PCA, namely angle PCA, is proposed....