Humans prioritize the processing of threats over neutral stimuli; thus, not surprisingly, the presence of threats has been shown to alter performance on both perceptual and cognitive tasks. Yet whether the quantification process is disrupted in the presence of threat is unknown. In three experiments, we examined numerical estimation and discrimination abilities in adults in the context of threa...

BACKGROUND Selecting a voxel size that yields minimal radiation dose with no significant compromise of the diagnostic accuracy of cone beam computed tomography (CBCT) is particularly important. OBJECTIVES This study aimed to assess the effect of voxel size on detection accuracy of simulated external root resorption defects using NewTom CBCT system. MATERIALS AND METHODS In this diagnostic s...

Abstract This paper enhances the voxel-to-voxel radiance shooting, propagation, and scattering algorithm of Max [20]. It reduces memory requirements by storing only on occupied cells a sparse voxel octree sampling 24 propagation direction bins instead 96 or more. gives modification to compensate for larger solid angle allows position-dependent fully anisotropic scattering. For volume $$n^3$$ <m...

This thesis investigates a memory-efficient representation of highly detailed geometry in 3D voxel grids. The memory consumption of a plain dense grid scales too fast as the resolution increases to be feasible at very high resolutions. In computer graphics, the geometry is often surface geometry, and representing the data in a sparse voxel octree exploits the sparsity, making the memory consump...

3D LiDAR has become an indispensable sensor in autonomous driving vehicles. In LiDAR-based point cloud semantic segmentation, most voxel-based segmentors cannot efficiently capture large amounts of context information, resulting limited receptive fields and limiting their performance. To address this problem, a sparse attention network is introduced for termed SVASeg, which captures information...

bilevel linear programming  is a decision making problem with a two-level decentralized organization. the textquotedblleft leadertextquotedblright~ is in the upper level and the textquotedblleft followertextquotedblright, in the lower. making a decision at one level affects that at the other one. in this paper, bilevel linear programming  with inexact parameters has been studied and a method is...

Introduction: The concept of one-voxel-one-coil(OVOC) acquisition has been introduced as an extreme realization of parallel imaging where spatial information is predominantly encoded through the sensitive volumes of multiple small coils. In implementations as MR-encephalography(MREG) or Inverse Imaging (InI) this allows very rapid examination of functional activation (1,2). The signal time cour...