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Ama Carney

Bio: Ama Carney is an academic researcher from Case Western Reserve University. The author has contributed to research in topics: Exoplanet & Aperture. The author has an hindex of 2, co-authored 4 publications receiving 7 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, the authors performed microgravity experiments to study concurrent-flow flame spread over an array of thin cellulose-based fuel samples, using NASA Glenn Research Center's 5.18-s drop tower.

11 citations

Journal ArticleDOI
TL;DR: The Wide Aperture Exoplanet Telescope (WAET) as discussed by the authors is a ground-based optical telescope layout in which one dimension of a filled aperture can be made very large (beyond 100m) at low cost and complexity.
Abstract: The Wide Aperture Exoplanet Telescope (WAET) is a ground-based optical telescope layout in which one dimension of a filled aperture can be made very large (beyond 100 m) at low cost and complexity. With an unusual beam path but otherwise conventional optics, we obtain a fully steerable telescope on a low-rise mount with a fixed-gravity vector on key components. Numerous design considerations and scaling laws suggest that WAET can be far less expensive than other giant segmented mirror telescopes.

2 citations

Posted Content
TL;DR: The Wide Aperture Exoplanet Telescope (WAET) as discussed by the authors is a ground-based optical telescope layout in which one dimension of a filled aperture can be made very, very large (beyond 100 m) at low cost and complexity.
Abstract: The Wide Aperture Exoplanet Telescope (WAET) is a ground-based optical telescope layout in which one dimension of a filled aperture can be made very, very large (beyond 100 m) at low cost and complexity. With an unusual beam path but an otherwise-conventional optics, we obtain a fully-steerable telescope on a low-rise mount with a fixed gravity vector on key components. Numerous design considerations and scaling laws suggest that WAET can be far less expensive than other giant segmented mirror telescopes.

Cited by
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01 Oct 1990
TL;DR: In this article, the rate of wind-aided firespread (v{sub f}) across an array of very small-diameter, discrete fuel elements is sought, as a step toward predicting the advance in time of a firefront though either strewn debris in a heavily-blast-damaged scenario or through brush-and-grass-type wildlands.
Abstract: The rate of wind-aided firespread (v{sub f}) across an array of very-small-diameter, discrete fuel elements is sought, as a step toward predicting the advance in time of a firefront though either strewn debris in a heavily-blast-damaged scenario or through brush-and-grass-type wildlands. Here, the quasisteady rate (if one exists) is sought for conditions under which there is both (1) a wind whose mean speed U is constant and whose direction is constant, and (2) a horizontal bed with a macroscopically uniform fuel distribution. M is the mass of fuel (per unit planform area of the bed) consumed with firefront passage; here the fuel elements are thin, so the fuel consumed is identical with the fuel loading initially present, if fire propagates at all. Laboratory-scale experiments in a specially dedicated firetunnel, with supplementary approximate analysis, are reported. Extensive testing suggests that (v{sub f}) varies with sq root of U/m over a wide range of the parameters U and m. Only if the thin-fuel loading m approaches the rather large value of very roughly 2 g/sq cm is radiative transfer likely to play a role comparable to that of convection/diffusion for preheating.

7 citations

Journal ArticleDOI
Hao Zhou1, Yueting Chen1, Huajun Feng1, Guomian Lv1, Zhihai Xu1, Qi Li1 
TL;DR: An image synthesis algorithm based on multi-frame deconvolution for rotated rectangular aperture imaging with Hyper-Laplacian priors and sparse priors is proposed and has excellent performance in visual effect and objective evaluation.
Abstract: Rotated rectangular aperture imaging has many advantages in large aperture telephoto systems due to its lower cost and lower complexity. This technology makes it possible to build super large aperture telescopes. In this paper, we combine the ideas of deblurring with rotated rectangular aperture imaging and propose an image synthesis algorithm based on multi-frame deconvolution. In the specific reconstruction process, Hyper-Laplacian priors and sparse priors are used, and an effective solution is developed. The simulation and real shooting experiments show that our algorithm has excellent performance in visual effect and objective evaluation. The synthetic images are significantly sharper than the results of the existing methods.

6 citations

Posted Content
TL;DR: The Wide Aperture Exoplanet Telescope (WAET) as discussed by the authors is a ground-based optical telescope layout with an extremely asymmetric aperture, which results in new exoplanet imaging reach at very low cost.
Abstract: The Wide Aperture Exoplanet Telescope (WAET) is a new ground-based optical telescope layout with an extremely asymmetric aperture, which results in new exoplanet imaging reach at very low cost. We suggest that hWAET, a 100x2 telescope, can be built for $150M in the 2020s, and >300m versions merit further R&D.

4 citations

Journal ArticleDOI
TL;DR: The Flame Tracker is intended for the combustion research community to facilitate the video processing and the tracking of flame position, length, area, and spread rate variations in time, and could potentially be applied to other research fields as well.

3 citations

Journal ArticleDOI
TL;DR: In this paper , a literature review provides a very comprehensive overview of previous experimental studies and the experimental methodologies utilised, and a discussion is provided on the implications of the fact that the phenomena studied in the experimental investigations and the type of material employed covers both programmatic and scientific needs.

3 citations