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- Centre National de la Recherche ScientifiqueFR191 papers
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292 papers · 1 filter
Auto-validating von Neumann Rejection Sampling from Small Phylogenetic Tree Spaces
Raazesh Sainudiin, Thomas York
In phylogenetic inference one is interested in obtaining samples from the posterior distribution over the tree space on the basis of some observed DNA sequence data. The challenge…
A complete classification of epistatic two-locus models
Ingileif B. Hallgrimsdottir, Debbie S. Yuster
The study of epistasis is of great importance in statistical genetics in fields such as linkage and association analysis and QTL mapping. In an effort to classify the types of epis…
Spin Freezing in Geometrically Frustrated Antiferromagnets with Weak Disorder
T. E. Saunders, J. T. Chalker
We investigate the consequences for geometrically frustrated antiferromagnets of weak disorder in the strength of exchange interactions. Taking as a model the classical Heisenberg…
An XMM-Newton view of the X-ray flat radio-quiet quasar PG 1416-129
D. Porquet, J. N. Reeves, A. Markowitz +3
(abridged) The radio-quiet quasar PG1416-129 (z=0.129) exhibits atypical optical and X-ray properties. Between 1990 and 2000, in response to its optical continuum decrease, the ``c…
The 2dF-SDSS LRG and QSO Survey: QSO clustering and the L-z degeneracy
J. da Angela, T. Shanks, S. M. Croom +12
We combine the QSO samples from the 2dF QSO Redshift Survey (2QZ) and the 2dF-SDSS LRG and QSO Survey (2SLAQ) in order to investigate the clustering of z~1.4 QSOs and measure the c…
Magnetic order in the S=1/2 two-dimensional molecular antiferromagnet, copper pyrazine perchlorate Cu(Pz)_2(ClO_4)_2
T. Lancaster, S. J. Blundell, M. L. Brooks +14
We present an investigation of magnetic ordering in the two-dimensional S=1/2 quantum magnet Cu(Pz)_2(ClO_4)_2 using specific heat and zero field muon-spin relaxation (μ^+SR). The…