نتایج جستجو برای: non normal cones
تعداد نتایج: 1813725 فیلتر نتایج به سال:
Abstract In this paper we introduce the concept of conical behaviour, a complete time invariant cones of trajesctories. We focus our attention on the cones as subsets of autonomous linear system. We give geometrical conditions that such cones admit a non negative state realization. In addition we consider the closed sets of trajectories of a autoregressive scalar model on wich are imposed inequ...
The cellular basis of the hypersensitivity of the S (blue) cone system in patients with enhanced S cone syndrome was examined by analyzing ERGs from three patients. The patients had large alpha-waves in response to the blue and white flashes. These alpha-waves were shown to be driven nearly entirely by the S cones. Although these S cone alpha-waves were 4-6 times the size of the normal L/M cone...
We present estimates, based on psychophysical measurements, of the density of cones in the fovea centralis of human dichromats. The estimates for a group of three protanopes and three deuteranopes (this study) were compared to the estimates of the density of cones in a group of six color normal trichromats from previous studies (Cicerone & Nerger, 1985, 1989). The results support the conclusion...
Credal sets are one of the most important models for describing probabilistic uncertainty. They usually arise as convex compatible with judgments provided in terms coherent lower previsions or more specific such probabilities probability intervals. In finite spaces, credal take form polytopes. Many properties polytopes can be derived from their normal cones, which polyhedral complexes called fa...
In this paper, we show that the fiber cones of rational normal scrolls are Cohen–Macaulay. As an application, compute their Castelnuovo–Mumford regularities and $$\varvec{a}$$ -invariants, as well reduction number defining ideals scrolls. We also characterize Gorensteinness cone.
Background and Aim: Care must be taken during root canal therapy to prevent contamination of filling materials and avoid root canal contamination. Gutta-percha cones are now widely used to fill root canals. However they are not resistant to conventional sterilization processes in moist or dry heat. To keep the aseptic chain, gutta-percha cones require rapid chair side decontamination before use...
The long, slender cones of the teleost retina elongate at night and contract during the day. In the Midas cichlid, Cichlasoma citrinellum, this cone excursion is elicited both by changes in light conditions and by strong endogenous circadian rhythms. In a normal day/night cycle. C. citrinellum cones change length by 69 micron. We have found that in this species an endogenous circadian rhythm in...
PURPOSE To quantify impressions of mitochondrial translocation in degenerating cones and to determine the nature of accumulated material in the subretinal space with apparent inner segment (IS)-like features by examining cone IS ultrastructure. METHODS Human donor eyes with advanced age-related macular degeneration (AMD) were screened for outer retinal tubulation (ORT) in macula-wide, high-re...
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