Results 321 to 330 of about 14,491,899 (383)

Biquadratic Exchange and Quadrupolar Ordering

Journal of Applied Physics, 1969
We have studied in the molecular field approximation the statistical mechanical properties of the Hamiltonian H= ∑ mnJ(m−n)Sm·Sn− ∑ mnj(m−n)(Sm·Sn)2,for spin one ions. Other authors have already shown that the biquadratic term can cause the magnetic transition to become first order.1 Closer examination shows that one must consider, in addition to the ...
M. Blume, Y. Y. Hsieh
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Exchangeable Random Orders and Almost Uniform Distributions

Journal of Theoretical Probability, 2000
Let \({\mathcal V}\) \([{\mathcal T}]\) denote the set of all partial [total] orders on \(\mathbb{N}\). For \(U,V\in{\mathcal V}\), let \(U\vee V\) be the smallest partial order containing \(U\cup V\), and put \(\langle V\rangle=\{j \in\mathbb{N}\): there is \(k\neq j\) such that either \((j,k)\in V\) or \((k,j)\in V\}\).
Ulrich Hirth, Paul Ressel
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Chaos and order in exchange rates

International Journal of Monetary Economics and Finance, 2009
This paper asks what accounts for differing levels of exchange rate variance among countries over time. It suggests that the type of political system (i.e., number of policy veto players) is a determinant of policy outcomes in foreign exchange markets. If exchange rate decisions are made by larger groups of actors, we are more likely to witness greater
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Order Flow and Exchange Rate Dynamics in Brazil [PDF]

SSRN Electronic Journal, 2004
The paper presents results of empirical tests with hybrid nominal exchange rate models for the Brazilian foreign exchange market, using macroeconomic and market microstructure variables. The basic model was originally proposed and tested in the German (DM/US$) and the Japanese (Y/US$) foreign exchange markets by Evans and Lyons (2002).
de Medeiros, Otavio Ribeiro
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The Exchange Order

2017
This book illuminates a comprehensive social system that comprises explicit markets, tort liability, and criminal liability, and describes each of these three institutions as serving the same function in different social and physical circumstances. It defines exchanges as compensated transfers of rights and objects among individuals, and shows that ...
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First-order eikonal exchange amplitudes

Physical Review A, 1982
A detailed derivation of a first-order analytic approximation to the electron-hydrogen charge-exchange amplitude in both the Glauber approximation and eikonal approximmations in both post and prior forms is presented. The results are applicable to arbitrary initial states.
Alvin M. Halpern, Victor Franco
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Second-order eikonal exchange amplitudes

Physical Review A, 1986
The analytic expressions of the second-order eikonal exchange amplitudes are derived for electron-hydrogen scattering in both post and prior forms. In the case of the Glauber exchange amplitude, these expressions are shown to be reducible to closed forms. The results are applied to the calculation of elastic e-H(1s) scattering.
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Architecture and Wilderness: An Exchange of Order

2019
If wilderness refers to those spaces that are unoccupied by humans while architecture is one major way that humans occupy space, the terms seem to be mutually exclusive. However, this thesis argues that wilderness and architecture have a fundamental similarity: they are both ways that humans understand and relate to the world.
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Stochastic ordering of risk/insurance exchanges

Scandinavian Actuarial Journal, 1980
Abstract Insurance contracts employ various devices for sharing risk between the insured and insurer. This paper provides a Stochastic ordering of the risk exchange devices commonly found in direct insurance contracts thereby extending the work of Borch, Arrow and Raviv.
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Order-order transitions in spin systems with double electron exchange

Journal of Magnetism and Magnetic Materials, 1976
Abstract Spin systems in the presence of isotropic single and double electron exchange are investigated at nonzero temperature. We use a generalized mean field approximation that allows for a variable local axis of quantization. This leads to the introduction of an angular parameter Θ giving the angle between nearest neighbor quantization axes. It is
R.G. Munro, M.D. Girardeau
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