نتایج جستجو برای: derivation

تعداد نتایج: 32229  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1993
I E Segal

The chronometric redshift-distance relation z = tan 2(1/2rho), where rho is the distance in radians in the Einstein metric, is derived by an elementary geometric analysis comparable to that in traditional analysis of the expanding universe model. The differential dTt of Einstein time evolution Tt through time t, as applied to the local Minkowski coordinates x, takes the form sec2(1/2t). At the ...

Journal: :British journal of industrial medicine 1975
A J Fox

Approaches to the use of the International Labour Office U/C Classification of radiological appearances are considered in the context of multiple readers recording different degrees of abnormality. The Panel on Survey Radiology has been set up to provide a basis for standardization. An example of how the panel may be used in this role is given. The approach will depend on the standards maintain...

Journal: :Physical review letters 2006
Shunsuke Furukawa Grégoire Misguich Masaki Oshikawa

A systematic method for determining order parameters for quantum many-body systems on lattices is developed by utilizing reduced density matrices. This method allows one to extract the order parameter directly from the wave functions of the degenerate ground states without the aid of empirical knowledge, and thus opens a way to explore unknown exotic orders. The applicability of this method is ...

2016
Jennifer Lin Fiona L Murphy Mike Taylor Liz Allen

Research leaders, policy makers and science strategists need evidence to support decision-making around research funding investment, policy and strategy.  In recent years there has been a rapid expansion in the data sources available that shed light onto aspects of research quality, excellence, use, re-use and attention, and engagement. This is at a time when the modes and routes to share and c...

2012
Alina Leminen Minna Lehtonen Miika Leminen Päivi Nevalainen Jyrki P. Mäkelä Teija Kujala

This study determined to what extent morphological processing of spoken inflected and derived words is attention-independent. To answer these questions EEG and MEG responses were recorded from healthy participants while they were presented with spoken Finnish inflected, derived, and monomorphemic words. In the non-attended task, the participants were instructed to ignore the incoming auditory s...

2016
Jun He Jiankui Li Wenhua Qian

A linear mapping φ on an algebra A is called a centralizable mapping at G ∈ A if φ(AB) = φ(A)B = Aφ(B) for each A and B in A with AB = G, and φ is called a derivable mapping at G ∈ A if φ(AB) = φ(A)B + Aφ(B) for each A and B in A with AB = G. A point G in A is called a full-centralizable point (resp. full-derivable point) if every centralizable (resp. derivable) mapping at G is a centralizer (r...

Journal: :The Journal of chemical physics 2010
Satoshi Maeda Keiji Morokuma

Search for transition structures (TSs) as first-order saddles is one of the most important tasks in theoretical study of chemical reaction. Although automated search has been established either by starting from a local minimum (MIN) or by connecting two MINs, there is no systematic method which can locate TSs of A+B-->X(+Y) type reactions starting from separated reactants. We propose such an ap...

Journal: :The Journal of the Acoustical Society of America 2008
Louis de Barros Michel Dietrich

Analytical formulas are derived to compute the first-order effects produced by plane inhomogeneities on the point source seismic response of a fluid-filled stratified porous medium. The derivation is achieved by a perturbation analysis of the poroelastic wave equations in the plane-wave domain using the Born approximation. This approach yields the Frechet derivatives of the P-SV- and SH-wave re...

2005
Toukaiddine Petit Freddy Van Oystaeyen

We provide an algorithm for decomposing a finite-dimensional Lie algebra over a field of characteristic 0 permitting to generalize the derivation tower theorem for Lie algebras, is proved by E. Schenkman [4].

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