Results 81 to 90 of about 455,998 (205)

Beam squint and Stokes V with off-axis feeds

, 2008
Radio telescopes with off-axis feeds, such as the (E)VLA, suffer from "beam squint" in which the two orthogonal circular polarizations sampled have different pointing centers on the sky.
Cotton, W. D., Uson, Juan M.
core   +1 more source

The Parkes Galactic Meridian Survey (PGMS): observations and CMB polarization foreground analysis [PDF]

, 2010
We present observations and CMB foreground analysis of the Parkes Galactic Meridian Survey (PGMS), an investigation of the Galactic latitude behaviour of the polarized synchrotron emission at 2.3 GHz with the Parkes Radio Telescope.
Amarie, Baumann, Beck, Benoît, Bernardi, Bernardi, Beuermann, Boyle, Brown, Carretti, Carretti, Carretti, Carretti, Chiang, Crill, D. McConnell, De Bernardis, E. Carretti, Emerson, Finkbeiner, Frick, G. Bernardi, Gaensler, Gold, Grainger, Górski, Han, Hinshaw, Hockney, Jansson, Kamionkowski, Komatsu, Kraus, La, M. Haverkorn, Masi, N. M. McClure-Griffiths, Page, Peiris, Ponthieu, S. Cortiglioni, S. Poppi, Sbarra, Seljak, Sun, Tegmark, Tegmark, Testori, Thomas, Tucci, Verde, Wolleben   +51 more
core   +3 more sources

Aeroelastic Assessments and Functional Hazard Analysis of a Regional Aircraft Equipped with Morphing Winglets

Aerospace, 2019
The application of morphing wing devices can bring several benefits in terms of aircraft performance, as the current literature shows. Within the scope of Clean Sky 2 AirGreen 2 European project, the authors provided a safety-driven design of an adaptive
Maria Chiara Noviello, Ignazio Dimino, Antonio Concilio, Francesco Amoroso, Rosario Pecora   +4 more
doaj   +1 more source

Cambodian Trade Union Leader Murdered [PDF]

, 2007
The Clean Clothes Campaign calls for the Cambodian government to thoroughly investigate the murder of Hy Vuthy, president of the Free Trade Union of Workers of the Kingdom of Cambodia (FTUWKC.
Clean Clothes Campaign
core   +1 more source

Validating a novel angular power spectrum estimator using simulated low frequency radio-interferometric data

, 2017
The "Tapered Gridded Estimator" (TGE) is a novel way to directly estimate the angular power spectrum from radio-interferometric visibility data that reduces the computation by efficiently gridding the data, consistently removes the noise bias, and ...
Ali, Sk. Saiyad, Bharadwaj, Somnath, Choudhuri, Samir, Dutta, Prasun, Ghosh, Abhik, Roy, Nirupam   +5 more
core   +1 more source

Analysis of the Performance of mc-Si and CdTe Modules Under Soiling Conditions

SiliconPV Conference Proceedings
In this work, we study the soiling impact on the performance of two PV technologies installed in the south of Spain. For this purpose, we include electrical measurements as well as spectral aspects such as dust transmittance, quantum efficiency and the ...
Pablo Ferrada, Martha Isabel Llaguno, Aitor Marzo, Gabriel Lopez   +3 more
doaj   +1 more source

Measurements of Tropospheric NO2 in Romania Using a Zenith-Sky Mobile DOAS System and Comparisons with Satellite Observations

Sensors, 2013
In this paper we present a new method for retrieving tropospheric NO2 Vertical Column Density (VCD) from zenith-sky Differential Optical Absorption Spectroscopy (DOAS) measurements using mobile observations.
Gaia Pinardi, Lucian Georgescu, François Hendrick, Caroline Fayt, Mirela Voiculescu, Michel Van Roozendael, Alexis Merlaud, Daniel-Eduard Constantin   +7 more
doaj   +1 more source

New insights into foreground analysis of the WMAP five-year data using FASTICA

, 2009
In this paper, we present a foreground analysis of the WMAP 5-year data using the FASTICA algorithm, improving on the treatment of the WMAP 3-year data in Bottino et al 2008. We revisit the nature of the free-free spectrum with the emphasis on attempting
A. J. Banday, Baccigalupi, Banday, Bennett, Bonaldi, Bottino, Chiang, D. Maino, Davies, Delabrouille, Delabrouille, Dickinson, Dobler, Dobler, Dobler, Draine, Eriksen, Finkbeiner, Finkbeiner, Finkbeiner, Gold, Górski, Hansen, Haslam, Hinshaw, Hinshaw, Hyvärinen, Hyvärinen, Kim, M. Bottino, Maino, Maino, Park, Patanchon, Tegmark, Wright   +35 more
core   +1 more source

Compressive Sensing Using Iterative Hard Thresholding with Low Precision Data Representation: Theory and Applications

, 2020
Modern scientific instruments produce vast amounts of data, which can overwhelm the processing ability of computer systems. Lossy compression of data is an intriguing solution, but comes with its own drawbacks, such as potential signal loss, and the need
Alistarh, Dan, Gürel, Nezihe Merve, Kara, Kaan, Lemmin, Thomas, Püschel, Markus, Smith, Tyler, Stojanov, Alen, Zhang, Ce   +7 more
core   +1 more source

Efficient implementation of the adaptive scale pixel decomposition algorithm

, 2016
Context. Most popular algorithms in use to remove the effects of a telescope's point spread function (PSF) in radio astronomy are variants of the CLEAN algorithm.
Bhatnagar, S., Rau, U., Zhang, L., Zhang, M.   +3 more
core   +1 more source