Causal Analysis of a Migration of the Snout Butterfly, Libytheana bachmanii Iarvata (Strecker) (Libytheidae) [PDF]
Observation of a massive migration of the snout butterfly, Libytheana bachmanii larvata (Strecker), in central Texas in 1971 is described. An association of peak migration periods and periodic precipitation episodes is believed to be causal in nature ...
Neck, Raymond W.
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The density matrix renormalization group for ab initio quantum chemistry [PDF]
During the past 15 years, the density matrix renormalization group (DMRG) has become increasingly important for ab initio quantum chemistry. Its underlying wavefunction ansatz, the matrix product state (MPS), is a low-rank decomposition of the full ...
Van Neck, Dimitri, Wouters, Sebastian
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Faddeev Random Phase Approximation for Molecules [PDF]
The Faddeev Random Phase Approximation is a Green's function technique that makes use of Faddeev-equations to couple the motion of a single electron to the two-particle--one-hole and two-hole--one-particle excitations.
Barbieri, Carlo+2 more
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Functional assessment of the cervical spine in F-16 pilots with and without neck pain [PDF]
Introduction: Spinal symptoms in fighter pilots are a serious aeromedical problem. The most common neck complaints are muscular pain and strain. The aim of the current study was to determine possible differences in the cervical range of motion (CROM ...
Burnotte, Frederic+7 more
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DMRG-CASPT2 study of the longitudinal static second hyperpolarizability of all-trans polyenes [PDF]
We have implemented internally contracted complete active space second order perturbation theory (CASPT2) with the density matrix renormalization group (DMRG) as active space solver [Y. Kurashige and T. Yanai, J. Chem. Phys.
Van Neck, Dimitri+2 more
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Relative Odds of Neck Pain to Helmet Use Among Motorcyclists: a Case-Control Study [PDF]
Background: Neck pain is a widespread problem among motorcyclists, which is often neglected. There is limited research on the motorcycle's ergonomics, particularly in the context of the interaction between the riders and motorcycle.
Arslan, H. R. (Hafiz)+2 more
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Inner products in integrable Richardson-Gaudin models [PDF]
We present the inner products of eigenstates in integrable Richardson-Gaudin models from two different perspectives and derive two classes of Gaudin-like determinant expressions for such inner products.
Claeys, Pieter W.+2 more
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Exact solution of the $p_x + ip_y$ pairing Hamiltonian by deforming the pairing algebra [PDF]
The present paper makes a connection between collective bosonic states and the exact solutions of the $p_x + ip_y$ pairing Hamiltonian. This makes it possible to investigate the effects of the Pauli principle on the energy spectrum, by gradually ...
De Baerdemacker, Stijn+2 more
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CheMPS2: a free open-source spin-adapted implementation of the density matrix renormalization group for ab initio quantum chemistry [PDF]
The density matrix renormalization group (DMRG) has become an indispensable numerical tool to find exact eigenstates of finite-size quantum systems with strong correlation.
Ayers, Paul W.+3 more
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Lymphatic drainage patterns of head and neck cutaneous melanoma: does primary melanoma site correlate with anatomic distribution of pathologically involved lymph nodes? [PDF]
The aim of this study was to analyse patterns of metastatic spread from cutaneous head and neck melanoma, which are said to be highly variable.
Lukšić, Ivica+3 more
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