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A criterion for atomicity revisited

Wim H. Hesselink
2007 Acta Informatica  
The proof of correctness of the criterion itself was based on Lynch's definition of atomicity by serialization points. Here, this criterion is reformulated as a specification HRW in the formal sense.  ...  In a natural way, this gives a specification (ARW ) of an atomic variable in the style of Abadi and Lamport. Several implementations of atomic variables by lower level primitives are known.  ...  Acknowledgments We are grateful for the constructive criticisms of an anonymous referee, which led to significant improvements of the presentation.  ... 
doi:10.1007/s00236-007-0044-1 fatcat:rkvzqrpue5fj5iwfjuvvbajqle

Quantum stability of an ion in a Paul trap revisited

A. Hashemloo, C. M. Dion
2017 Molecular Physics  
We study the quantum stability of the dynamics of ions in a Paul trap. We revisit the results of Wang et al. [Phys. Rev.  ...  A 52, 1419 (1995)], which showed that quantum trajectories did not have the same region of stability as their classical counterpart, contrary to what is obtained from a Floquet analysis of the motion in  ...  Acknowledgement(s) The simulations were performed on resources provided by the Swedish National Infrastructure for Computing (SNIC) at the High Performance Computing Center North (HPC2N).  ... 
doi:10.1080/00268976.2017.1313464 fatcat:3qpymey5mjabriddg6xsgjzloi

Approximation Errors of Online Sparsification Criteria

Paul Honeine
2015 IEEE Transactions on Signal Processing  
For this purpose, several online sparsification criteria have been proposed to restrict the model definition on a subset of samples.  ...  The most known criterion is the (linear) approximation criterion, which discards any sample that can be well represented by the already contributing samples, an operation with excessive computational complexity  ...  By revisiting the upper bounds given in Section IV-A for each sparsification criterion, we can easily show the following results.  ... 
doi:10.1109/tsp.2015.2442960 fatcat:yyad4ggsw5gr7nyb3d3kaohtxe

Exact ionization potentials from wavefunction asymptotics: The extended Koopmans' theorem, revisited

Diederik Vanfleteren, Dimitri Van Neck, Paul W. Ayers, Robert C. Morrison, Patrick Bultinck
2009 Journal of Chemical Physics  
A simple explanation is given for the exactness of the extended Koopmans' theorem for computing the removal energy of any many-electron system to the lowest-energy ground state ion of a given symmetry.  ...  A necessary and sufficient condition for the validity of the extended Koopmans' theorem for any state (not just the lowest-energy states of a given symmetry) in terms of the third-order reduced density  ...  Further confirmation of our interpretation was obtained by revisiting the accurate calculations on the Beryllium atom from ref. 10 .  ... 
doi:10.1063/1.3130044 pmid:19466818 fatcat:dtcqjyu5nfd7vfduojzdjbysye

Nonlinear dynamics of ionization stabilization of atoms in intense laser fields

M. J. Norman, C. Chandre, T. Uzer, P. Wang
2015 Physical Review A. Atomic, Molecular, and Optical Physics  
We revisit the stabilization of ionization of atoms subjected to a superintense laser pulse using nonlinear dynamics.  ...  We emphasize the role of the choice for the ionization criterion, energy versus distance criterion.  ...  ) is without a ramp-down (T d = 0) and using the energy criterion for ionization.  ... 
doi:10.1103/physreva.91.023406 fatcat:zgb2ajmfyngzdise7ndy4tc44q

Hydration and coordination of K+ solvation in water from ab initio molecular-dynamics simulation

Yi Liu, Haigang Lu, Yanbo Wu, Tuoping Hu, Qiaoling Li
2010 Journal of Chemical Physics  
According to our natural geometric criterion for the coordinated oxygen atom, the average coordination number of K + is 6.24 and 6.53 at 300 and 450 K, respectively, which agrees with the experimental  ...  Car-Parrinello molecular-dynamics simulation Ab initio molecular-dynamics simulation of aqueous proton solvation and transport revisited Potassium ion in water plays a very important role in chemistry  ...  According to our natural geometric criterion for the coordinated oxygen atom, the average coordination number of K + is 6.24 and 6.53 at 300 and 450 K, respectively, which agrees with the experimental  ... 
doi:10.1063/1.3369624 pmid:20370129 fatcat:oazytrwiazgjlef5tsi6qg63oy

Locality and reality revisited [article]

Adrian Kent
2002 arXiv   pre-print
Bell gave the now standard definition of a local hidden variable theory and showed that such theories cannot reproduce the predictions of quantum mechanics without violating his "free will" criterion:  ...  In particular, there is no violation of the free will criterion.  ...  Imagine a world in which, say, a particular type of crystal has the property that its surfaces are perfect square arrays of atoms, in which each atom has an asymmetric feature which define an orientation  ... 
arXiv:quant-ph/0202064v3 fatcat:tuod3oqaxfcxxp4lpn5u3zjxia

On the significance of an accurate vector-set selection in molecular replacement: a practical example

C. Alvarez-Rúa, J. Borge, S. García-Granda
2000 Acta Crystallographica Section A Foundations of Crystallography  
Image Seeking Functions (ISFs) can be regarded as a criterion of fit between an observed Patterson map and a vector-set from a search model.  ...  s8b.m2.p4Vector-search methods revisited in macromolecular crystallography: a new rotation function in Patterson space. J.Borge, C. Alvarez-Rúa, S. García-Granda.  ... 
doi:10.1107/s0108767300026349 fatcat:x7oxbomp5fetznobst2gfaahk4

Page 755 of Mathematical Reviews Vol. 58, Issue 2 [page]

1979 Mathematical Reviews  
Non-atomic systems of individuals revisited. Notis 3 (1969), no. 4, 431-434. Eberle, Rolf A. ' 58 #5090c Erratum: “Non-atomic systems of individuals revisited” (Nois 3 (1969), no. 4, 431-434).  ...  > at | )- For y of ons, > y ype of a va- ea) fer. Be dit- BS BERS 755 Logic and Foundations [false] in every finite atomic intended model but not in any infinite atomic intended model.  ... 

Guest editorial: Special Issue on Science of Wear

Yonggang Meng, Valentin L. Popov, Jean-François Molinari
2018 Friction  
It is devoted to a review of a recent series of papers on adhesive wear which offers a new paradigm for future wear research.  ...  It is felt that now it is the right time to revisit the subject of wear intensively, with a special focus on the understanding of physical mechanisms.  ...  It is devoted to a review of a recent series of papers on adhesive wear which offers a new paradigm for future wear research.  ... 
doi:10.1007/s40544-018-0241-7 fatcat:7sh5rn2op5fqjcpfmvbnidczhq

Hard-sphere displacive model of deformation twinning in hexagonal close-packed metals. Revisiting the case of the (56°, a) contraction twins in magnesium

Cyril Cayron
2017 Acta Crystallographica Section A: Foundations and Advances  
A continuous angular distortion matrix that transforms the initial hexagonal close-packed (h.c.p.) crystal into a final h.c.p. crystal is determined such that the atoms move as hard spheres and reach the  ...  The classical shear theory of deformation twinning does not specify the atomic displacements and does not explain why contraction twinning is less frequent than extension twinning.  ...  Roland Logé, director of LMTM, and to PX group for the laboratory subsidy and for our scientific and technical exchanges.  ... 
doi:10.1107/s2053273317005459 pmid:28660866 fatcat:ghca233pwjbotawddqwb3dmobi

Diffraction of He atoms from Xe monolayer adsorbed on the graphite (0 0 0 1) revisited: the importance of multiple scattering processes

A. Šiber, B. Gumhalter
2003 Surface Science  
We comment and discuss the findings and conclusions of a recent theoretical study of the diffraction of He atoms from a monolayer of Xe atoms adsorbed on the graphite (0001) surface [Khokonov et al., Surf  ...  By revisiting the problem we demonstrate that all main conclusions of Khokonov et al. that pertain to the studied system are at variance with the available experimental and theoretical evidence and the  ...  Namely, KKK have arrived at such a conclusion by uncritically employing WeareÕs criterion [21] for n n in the regime in which this criterion is inapplicable (cf. Figs. 1 and 2 in Ref.  ... 
doi:10.1016/s0039-6028(03)00260-7 fatcat:nn5ozufb5zcilnoxb6mfuewmim

The generalized Lindemann melting coefficient [article]

Melvin M. Vopson, Nassina Rogers, Ian Hepburn
2020 arXiv   pre-print
Its main assumption is that melting occurs when the root-mean-square vibration amplitude of ions and atoms in crystals exceeds a critical fraction, h of the inter-atomic spacing in crystals.  ...  Using these vales, the recalculation of the melting temperatures indicates a good match to the experimental values for 39 elements, corresponding to 12 out of 15 periodic groups.  ...  Figure 1 shows the melting temperature plotted as a function of the atomic mass number for 49 mono-atomic solids.  ... 
arXiv:2005.12912v1 fatcat:zj5jl6y2grdgxieudzlqpngare

Criterion for testing multiparticle negative-partial-transpose entanglement

B. Zeng, D. L. Zhou, P. Zhang, Z. Xu, L. You
2003 Physical Review A. Atomic, Molecular, and Optical Physics  
We revisit the criterion of multiparticle entanglement based on the overlaps of a given quantum state with maximally entangled states.  ...  For a system of m particles, each with N distinct states, we prove that is m-particle negative partial transpose entangled, if there exists a maximally entangled state ͉MES͘, such that ͗MES͉͉MES͘Ͼ1/N.  ...  In this paper we revisit a sufficient condition for m-particle entanglement of a state based on its overlaps with maximally entangled states.  ... 
doi:10.1103/physreva.68.042316 fatcat:snhjqnp5yfdl7cn5pdhgdo5564

Revisiting Julg's Structural Approach to Aromaticity

Myriam S. de Giambiagi, Mario Giambiagi, Aloysio Paiva de Figueiredo
2001 Zeitschrift fur Naturforschung A-A Journal of Physical Sciences  
A simple CNDO/2 calculation is shown to account satisfactorily for heterocyclic typical rings and other mis­cellaneous systems.  ...  AbstractJulg's classical formula for aromaticity is updated so as to involve bond indices.  ...  Iab is generalized for multicenter bonds as below [11] ; for the calculation of Irm g [6] we have used Iab-■ l = 2 £ aA,b£B,-■,£eL n « i L I L " (5) We have thus found interesting to revisit Julg's  ... 
doi:10.1515/zna-2001-0601 fatcat:wj2uu3ddnnfl5pd34pblqxfcxy
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