Concept

Greedy algorithm for Egyptian fractions

Related publications (52)

Long-lived states to sustain hyperpolarized magnetization

Geoffrey Bodenhausen, Jean-Philippe Ansermet, Arnaud Comment, Sami Jannin, Paul Romeo Vasos, Riddhiman Sarkar, Puneet Ahuja

Major breakthroughs have recently been reported that can help overcome two inherent drawbacks of NMR: the lack of sensitivity and the limited memory of longitudinal magnetization. Dynamic nuclear polarization (DNP) couples nuclear spins to the large reserv ...

2009

ResIn: A Combination of Result Caching and Index Pruning for High-performance Web Search Engines

Gleb Skobeltsyn

Results caching is an efficient technique for reducing the query processing load, hence it is commonly used in real search engines. This technique, however, bounds the maximum hit rate due to the large fraction of singleton queries, which is an important l ...

2008

A comparative quadrant analysis of turbulence in a plant canopy

Marc Parlange, Charles Vivant Ignacio Meneveau

Large-eddy simulation (LES) of turbulence in plant canopies has traditionally been validated using bulk statistical quantities such as mean velocity and variance profiles. However, turbulent exchanges between a plant canopy and the atmosphere are dominated ...

2007

Charged excitons in modulation-doped quantum wires

Elyahou Kapon, Benjamin Dwir, Marc-André Dupertuis, Daniel Oberli, Nicolas Moret

We report on the observation of negatively- and positively-charged excitons in the photoluminescence spectra of V-groove quantum wires. The. charged exciton binding energy increases with the strength of the quantum confinement. We demonstrate that fluctuat ...

American Institute of Physics2005

Full absorption of third harmonic ECH in TCV tokamak plasmas in the presence of second harmonic ECCD

Olivier Sauter, Stefano Coda, Timothy Goodman, Jean-Marc Moret, Stefano Alberti, Patrick Blanchard, Adriano Manini

An experimental study of the extraordinary mode (X mode) absorption at the third electron cyclotron harmonic frequency has been performed on the TCV tokamak in plasmas preheated by X mode at the second harmonic. Full single pass absorption of injected X3 p ...

2002

Primary damage formation in molybdenum: a computer simulation study

The primary damage formation in Mo is investigated using molecular dynamics (MD) simulation with embedded-defect (ED) and embedded-atom method (EAM) interatomic potentials. The former is similar in spirit to the latter but includes an approximate treatment ...

2002

Direct Numerical Simulation of the Flow in a Lid-Driven Cubical Cavity

Emmanuel Leriche

Direct numerical simulation of the flow in a lid-driven cubical cavity has been carried out at a Reynolds number above 10 000. Both transient and steady-in-the-mean states of the flow posses long time scales requiring long integration times. A large fracti ...

2000

Electronic properties of layered oxides: Pulsed laser deposition of YBCO films for in-situ studies by photoemission spectroscopy

Giorgio Margaritondo, Marco Grioni, Davor Pavuna, Helmuth Berger

Due to imperfect surfaces of most cuprate samples, almost all photoemission studies in the past decade were performed on Bi2Sr2CaCu2O8+x, even though a large fraction of other studies and electronic applications was reported for YBa2Cu3O7-delta (YBCO) fami ...

1998

Effects of culture conditions on the production and quality of monoclonal IgA

Urs von Stockar, Ian William Marison

Monoclonal IgA antibodies have been produced by a hybridoma cell line grown in different bioreactors using serum-contg. and protein-free media in both basal and fortified versions. The effects of culture conditions on IgA prodn. and quality were studied us ...

1997

Axial and bending strain effects in Ag and AgNiMg/Bi-2212 wires

Rainer Wesche

The effects of axial tensile and bending strains on the critical current densities of Ag and AgNiMg/Bi-2212 wires produced by the powder-in-tube method have been studied. At T=4.2 K and B=12 T the critical current densities of the investigated single and m ...

1996

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