This paper asseses the question, given a arbitrary point in , can it be reconstructed by a given camera orbit? We show that a solution to this problem can be found by intersecting the view frustums of the cameras in the sequence creating a polyhedron that bounds the area in observed by all cameras. For a projective set of cameras this can be considered as an expansion of the cheiral inequalitie...

coronary heart disease has been one of the main threats of human health. coronary angiography is taken as the “gold standard” for the assessment of coronary artery disease. but sometimes, the images are difficult to interpret visually because of the crossing and overlapping of the vessels in the angiograms. vessel extraction from x-ray angiograms has been a challenging problem for several years...

A high photocurrent of 36.96 mA cm(-2) was achieved for wafer-scaled crystalline Si solar cells with hexagonal nanoconical frustum arrays at the surface. Optical simulations showed that the expected photocurrent of 10 μm thick nanostructured cells could slightly exceed the Lambertian limit.

We describe an extension and a generalization of the Catmull recursive subdivision algorithm: first, an imagebased occlusion culling stage is added; second, all rendering stages, that is, view-frustum and occlusion culling, subdivision of geometric primitives into micropolygons, and rasterization, are performed in spacetime. Operating in spacetime allows to exploit temporal coherence in animate...

The COVID-19 pandemic has brought significant changes to people’s lives, causing high levels of anxiety, distress, and fear. In response, the “Fear COVID-19” scale (FCV-19S) was developed in 2020 measure severity fears related COVID-19. This study assessed psychometric properties Czech version FCV-19S, which administered a representative sample 1372 participants, confirmatory factor analysis (C...

Orientation: Investigating the psychological aspects associated with coronavirus disease might be important for interventions. The fear of coronavirus-19 scale (FCV-19S) has emerged as a popular measure coronavirus-19-related fear. However, its psychometric properties remain unknown in South Africa. Research purpose: This study set out to investigate internal validity FCV-19S African context us...

We conducted a reliability comparison study to determine the intrarater and inter-rater reliability and the limits of agreement of the volume estimated by circumferential measurements using the frustum sign method and the disk model method, by water displacement volumetry, and by infrared optoelectronic volumetry in the assessment of upper limb lymphedema. Thirty women with lymphedema following...

Fuzzy c-varieties (FCV) is one of the clustering algorithms in which the prototypes are multi-dimensional linear varieties. The linear varieties are represented by some local principal component vectors and the FCV clustering algorithm can be regarded as a simultaneous algorithm of fuzzy clustering and principal component analysis. However, obtained principal components are sometimes strongly i...

Caliciviruses use reinitiation of translation governed by a 'termination upstream ribosomal binding site' (TURBS) for expression of their minor capsid protein VP2. Mutation analysis allowed to identify sequences surrounding the translational start/stop site of the feline calicivirus (FCV) that fine tune reinitiation frequency. A selection of these changes was introduced into the infectious FCV ...

Feline calicivirus (FCV) shedding and oral bacterial flora were monitored over a period of 22 months in a case of feline gingivostomatitis (FGS). The cat was treated daily with 50 mg thalidomide capsules by mouth, and 200 mg lactoferrin powder was applied directly to the lesions. Clinical signs began to resolve after 11 months when, in addition to treatment, the diet had been changed to an addi...