Measuring Dark Matter Substructure with Galaxy-Galaxy Flexion Statistics (2009)
Bacon, D. J., Amara, A., Read, J. I.
It is of great interest to measure the properties of substructures in dark matter halos at galactic and cluster scales. Here we suggest a method to constrain substructure properties using the...
Fisher Matrix Decomposition for Dark Energy Prediction (2009)
Within the context of constraining an expansion of the dark energy equation of state w(z) we show that the eigendecomposition of Fisher matrices is sensitive to both the maximum order of the...
Cosmic Shear Systematics: Software-Hardware Balance (2009)
Amara, A., Refregier, A., Paulin-Henriksson, S.
Cosmic shear measurements rely on our ability to measure and correct the Point Spread Function (PSF) of the observations. This PSF is measured using stars in the field, which give a noisy measure at...
Cosmological models discrimination with Weak Lensing (2009)
Pires, S., Amara, A., Refregier, A., Teyssier, R.
Weak gravitational lensing provides a unique method to map directly the dark matter in the Universe. The majority of lensing analyses uses the two-point statistics of the cosmic shear field to...
Optimal PSF modelling for weak lensing: complexity and sparsity (2009)
Paulin-Henriksson, S., Refregier, A., Amara, A.
We investigate the impact of Point Spread Function (PSF) fitting errors on cosmic shear measurements using the concepts of complexity and sparsity. Complexity, introduced in a previous paper,...
[5] B. Prince, Semiconductor Memories, a Handbook of Design, Manufacture (2008)
G. Jochens, L. Kruse, E. Schmidt, W. Nebel, A New Parameterizable, A. Turier, ...
[7] B. Amrutur and M. Horowitz, “Speed and power scaling of SRAM’s,”
Cosmological Systematics Beyond Nuisance Parameters : Form Filling Functions (2008)
Kitching, T. D., Amara, A., Abdalla, F. B., Joachimi, B., Refregier, A.
In the absence of any compelling physical model, cosmological systematics are often misrepresented as statistical effects and the approach of marginalising over extra nuisance systematic parameters...
Pires, S., Amara, A., Teyssier, R., Refregier, A., Fadili, J.
With increasingly large data sets, weak lensing measurements are able to measure cosmological parameters with ever greater precision. However this increased accuracy also places greater demands on...
PSF calibration requirements for dark energy from cosmic shear (2007)
Paulin-Henriksson, S., Amara, A., Voigt, L., Refregier, A., Bridle, S. L.
The control of systematic effects when measuring galaxy shapes is one of the main challenges for cosmic shear analyses. In this context, we study the fundamental limitations on shear accuracy due to...
An Accurate Power and Timing Modeling Technique Applied To A Low-Power ROM Compiler (2007)
Turier Ben Ammar, L. Ben Ammar, A. Amara
Large memories require too much computing resources to be fully extracted and simulated. In this paper we present an accurate power and timing modeling technique that significantly reduces...
Biosynthesis of biodegradable polyhydroxyalkanotes biopolymers in genetically modified yeasts (2007)
Amara, A., Zaki, S., Abulhamd, A., Abulreesh, G.
In the recent decade, biosynthesis of the degradable biopolymers polyhydroxyalkanotes in transgenic yeasts became an important research task. Most research strategies depend on either metabolic...
Photo-z for weak lensing tomography from space: the role of optical and near-IR photometry (2007)
Abdalla, F. B., Amara, A., Capak, P., Cypriano, E. S., Lahav, O., Rhodes, J.
We study in detail the photometric redshift requirements needed for tomographic weak gravitational lensing in order to measure accurately the Dark Energy equation of state. In particular, we examine...
Power Spectrum Normalisation and the Non-Gaussian Halo Model (2003)
The normalisation of the matter power spectrum, sigma_8, is an essential ingredient to predict the phenomenology of the low redshift universe. It has been measured using several methods, such as...
An Accurate Power and Timing Modeling Technique Applied To A Low-Power ROM Compiler (1998)
Denmark A. Turier, Turier Ben Ammar, L. Ben Ammar, L. Ben Ammar, A. Amara, A. Amara
Large memories require too much computing resources to be fully extracted and simulated. In this paper we present an accurate power and timing modeling technique that significantly reduces...
A GaAs electrical rule checker (1997)
P. Remy, Remy Royannez, A. Amara
This paper presents electrical verification in GaAs DCFL VLSI circuits. A set of about thirty rules that deal with both static and dynamic electrical aspects has been especially defined. Moreover,...
A GaAs data-path compiler (1996)
Beaurin, O., Royannez, P., Amara, A., Chaput, J.P.
This paper deals with a GaAs data-path compiler for the public domain ALLIANCE CAD SYSTEM[l]. Based upon macro cells generators, cells libraries, and software tools, it provides a fast and easy way...