نتایج جستجو برای: conical collector

تعداد نتایج: 13889  

Journal: :Physical chemistry chemical physics : PCCP 2011
Yasuki Arasaki Kwanghsi Wang Vincent McKoy Kazuo Takatsuka

We have previously shown how femtosecond angle- and energy-resolved photoelectron spectroscopy can be used to monitor quantum wavepacket bifurcation at an avoided crossing or conical intersection and also how a symmetry-allowed conical intersection can be effectively morphed into an avoided crossing by photo-induced symmetry breaking. The latter result suggests that varying the parameters of a ...

Journal: :Computer Physics Communications 2012
Amparo Gil Javier Segura Nico M. Temme

In this paper we describe an algorithm and a Fortran 90 module (Conical) for the computation of the conical function P −1 2+iτ (x) for x > −1, m ≥ 0, τ > 0. These functions appear in the solution of Dirichlet problems for domains bounded by cones; because of this, they are involved in a large number of applications in Engineering and Physics. In the Fortran 90 module, the admissible parameter r...

Journal: :علوم کاربردی و محاسباتی در مکانیک 0
عباس هاشمی محمد حسین پور سید محمد حسین سیدکاشی

in sheet metal forming processes, one-stage production of conical-cylindrical parts with high accuracy is very difficult due to wrinkling and rupturing. hydrodynamic deep drawing assisted by radial pressure is one of the most applicable procedures in sheet hydroforming process on the point of producing conical-cylindrical parts. in this paper, forming pressure path is investigated as one of the...

2014
João Pedro Malhado Michael J. Bearpark James T. Hynes

Conical intersections play a major role in the current understanding of electronic de-excitation in polyatomic molecules, and thus in the description of photochemistry and photophysics of molecular systems. This article reviews aspects of the basic theory underlying the description of non-adiabatic transitions at conical intersections, with particular emphasis on the important case when the dyn...

2015
CHRISTIAN MÜLLER

We explore a specific discretization of isothermic nets in the plane which can also be interpreted as a discrete holomorphic map. The discrete orthogonality of the quadrilateral net is achieved by the so called conical condition imposed on vertex stars. That is, the sums of opposite angles between edges around all vertices are equal. This conical condition makes it possible to define a family o...

A. Nasiri Rad H. Rouhi R. Ansari,

In this paper, natural frequency and response of forced vibration of composite laminated conical shells under different boundary conditions are investigated. To this end, equations of Donnell's thin shell theory are used as governing equations. The analytical Galerkin method together with beam mode shapes as weighting functions is employed to solve the problem. Due to importance of boundary con...

Journal: :Occupational and environmental medicine 2004
P P F M Kuijer M H W Frings-Dresen

R efuse is collected all around the world. The following collecting methods are mentioned in the literature: bags (plastic and paper), bins (110–150 l), drums (110–210 l), twowheeled containers (80–360 l), and four-wheeled containers (300–1800 l). Over all, the job of a refuse collector can be characterised by frequent lifting, carrying, pushing, and/or pulling of heavy objects. In the Netherla...

2005
Martin Centurion Ye Pu Mankei Tsang Demetri Psaltis

We have studied the large-scale beam breakup and filamentation of femtosecond pulses in a Kerr medium. We have experimentally monitored the formation of stable light filaments, conical emission, and interactions between filaments. Three major stages lead to the formation of stable light filaments: First the beam breaks up into a pattern of connected lines sconstellationd, then filaments form on...

2008
Marius Buliga

A dilatation structure encodes the approximate self-similarity of a metric space. A metric space (X, d) which admits a strong dilatation structure (definition 2.2) has a metric tangent space at any point x ∈ X (theorem 4.1), and any such metric tangent space has an algebraic structure of a conical group (theorem 4.2). Particular examples of conical groups are Carnot groups: these are simply con...

2007
Xin Yang Sebastien Michea Hongyuan Zha

Estimating the intrinsic dimension of a high-dimensional data set is a very challenging problem in manifold learning and several other application areas in data mining. In this paper we introduce a novel local intrinsic dimension estimator, conical dimension, for estimating the intrinsic dimension of a data set consisting of points lying in the proximity of a manifold. Under minimal sampling as...

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