We consider two models of random cones together with their duals. Let Y 1 , ⋯ n $Y_1,\dots ,Y_n$ be independent and identically distributed vectors in R d $\mathbb {R}^d$ whose distribution satisfies some mild condition. The G A $G_{n,d}^A$ B $G_{n,d}^B$ are defined as the positive hulls pos { − 2 } $\mbox{pos}\lbrace Y_1-Y_2,\dots ,Y_{n-1}-Y_n\rbrace$ respectively, ,Y_{n-1}-Y_n,Y_n\rbrace$ con...

We investigated the physical and burning characteristics of sugar pine (Pinus lambertiana Douglas) cones and their contribution to woody surface fuel loadings. Field sampling was conducted at the Yosemite Forest Dynamics Plot (YFDP), a 25.6 ha mapped study plot in Yosemite National Park, California, USA. We developed a classification system to describe sugar pine cones of different sizes and de...

Abstract We investigate fixed energy scattering from conical potentials having an irregular cross-section. The incident wave can be arbitrary non-trivial Herglotz wave. show that a large number of such local scatterers scatter all waves, meaning the far-field will always non-zero. In essence there are no waves for which these would seem transparent at any given energy. more specifically is coll...

Abstract This study examines a simple estimation method for the measurement of mass an on-site log through vibration test. In this method, rather than itself, cut end portion is weighed. For purpose, with additional (VAM) was applied to Sitka spruce ( Picea sitchensis Carr.) circular truncated cones (model log) and Japanese cedar Cryptomeria japonica D. Don) logs. Longitudinal tests were perfor...

Crumpled paper or drapery patterns are everyday examples of how elastic sheets can respond to external forcing. In this Letter, we study experimentally a different sort of forcing. We consider a circular flexible plate clamped at its center and subject to a uniform flow normal to its initial surface. As the flow velocity is gradually increased, the plate exhibits a rich variety of bending defor...

We performed angle-resolved photoemission (ARPES) experiments with circularly polarized light and first-principles density functional calculation with spin-orbit coupling to study surface states of a topological insulator Bi2Se3. We observed circular dichroism (CD) as large as 30% in the ARPES data with upper and lower Dirac cones showing opposite signs in CD. The observed CD is attributed to t...

We present a catalog of type-specific, direct quadric fitting methods: Given a selection of a point cloud or triangle mesh, and a desired quadric type (e.g. cone, ellipsoid, paraboloid, etc), our methods recover a best-fit surface of the given type to the given data. Type-specific quadric fitting methods are scattered throughout the literature; here we present a thorough, practical collection i...

Under constant light-adapted conditions, vision seems to be rather linear. However, the processes underlying the synaptic transmission between cones and second-order neurons (bipolar cells and horizontal cells) are highly nonlinear. In this paper, the gain-characteristics of the transmission from cones to horizontal cells and from horizontal cells to cones are determined with and without negati...