Cergy-Pontoise University is a French university, in the Academy of Versailles.Cergy-Pontoise University is a public university and a leading centre of teaching and research, which welcomes 17,700 students and 1,500 international students interested in studying abroad.The university is located in the west of Paris , in the Val-d'Oise department.The university offers all levels of graduate and post-graduate studies. 144 bachelors, masters and doctorate degrees are available in a wide range of fields : law, economy and management, languages, literature and social science, and science and technology. Wikipedia.
Matzkin A.,Cergy-Pontoise University
Physical Review Letters
We propose a scheme allowing us to observe the evolution of a quantum system in the semiclassical regime along the paths generated by the propagator. The scheme relies on performing consecutive weak measurements of the position. We show how "weak trajectories" can be extracted from the pointers of a series of devices having weakly interacted with the system. The properties of these weak trajectories are investigated and illustrated in the case of a time-dependent model system. © 2012 American Physical Society. Source
Belliard S.,Cergy-Pontoise University
Nuclear Physics B
The modified algebraic Bethe ansatz, introduced by Crampé and the author , is used to characterize the spectral problem of the Heisenberg XXZ spin-1/2 chain on the segment with lower and upper triangular boundaries. The eigenvalues and the eigenvectors are conjectured. They are characterized by a set of Bethe roots with cardinality equal to N the length of the chain and which satisfies a set of Bethe equations with an additional term. The conjecture follows from exact results for small chains. We also present a factorized formula for the Bethe vectors of the Heisenberg XXZ spin-1/2 chain on the segment with two upper triangular boundaries. © 2015 The Author. Source
Cergy-Pontoise University | Date: 2013-12-18
The present invention relates to a material as interpenetrating polymer network (IPN) associating a gel with a co-network of functionalized synthetic polymer and functionalized protein as well as a method of the manufacture of such a material. In particular, the invention relates to a material as interpenetrating polymer network associating a fibrin gel with a co-network of polyvinylalcohol and albumin thank to methacrylate bridges, with improved biodegradability properties.
Cergy-Pontoise University | Date: 2012-06-13
A piezoelectric sensor for the detection and characterization of at least one biochemical element in a fluid, has a piezoelectric substrate exhibiting at each of its opposite faces at least one conducting surface forming electrodes, the electrodes being linked to an electrical generator, one at least of the surfaces being wrapped in a functionalized film, the electrodes form transmission lines exhibiting a zone constituting an induction loop for the excitation of the piezoelectric substrate, the link between the electrodes and the generator being ensured by inductive coupling. A system implementing such a sensor, as well as applications of such a sensor, are described.
Cergy-Pontoise University and University of Arizona | Date: 2010-10-08
In this invention, a new class of finite precision multilevel decoders for low-density parity-check (LDPC) codes is presented. These decoders are much lower in complexity compared to the standard belief propagation (BP) decoder. Messages utilized by these decoders are quantized to certain levels based on the number of bits allowed for representation in hardware. A message update function specifically defined as part of the invention, is used to determine the outgoing message at the variable node, and the simple min operation along with modulo 2 sum of signs is used at the check node. A general methodology is provided to obtain the multilevel decoders, which is based on reducing failures due to trapping sets and improving the guaranteed error-correction capability of a code. Hence these decoders improve the iterative decoding process on finite length graphs and have the potential to outperform the standard floating-point BP decoder in the error floor region. The description and apparatus of 3-bit decoders for column-weight three LDPC codes is also presented.