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341 results on '"Conn, Robert"'

1. Should the Endless Frontier of Federal Science be Expanded?

Author

Baltimore, David, Conn, Robert, Press, William H, Rosenbaum, Thomas, Spergel, David N, Tilghman, Shirley M, and Varmus, Harold

Subjects
Physics - Physics and Society, Astrophysics - Instrumentation and Methods for Astrophysics, Economics - General Economics, Physics - History and Philosophy of Physics, Quantitative Biology - Other Quantitative Biology
Abstract

Scientific research in the United States could receive a large increase in federal funding--up to 100 billion dollars over five years -- if proposed legislation entitled the Endless Frontiers Act becomes law. This bipartisan and bicameral bill, introduced in May 2020 by Senators Chuck Schumer (D-NY) and Todd Young (R-IN) and Congressmen Ro Khanna (D-CA) and Mike Gallagher (R-WI), is intended to expand the funding of the physical sciences, engineering, and technology at the National Science Foundation (NSF) and create a new Technology Directorate focused on use-inspired research. In addition to provisions to protect the NSF's current missions, a minimum of 15\% of the newly appropriated funds would be used to enhance NSF's basic science portfolio. The Endless Frontier Act offers a rare opportunity to enhance the breadth and financial support of the American research enterprise. In this essay, we consider the benefits and the liabilities of the proposed legislation and recommend changes that would further strengthen it., Comment: Appeared as an AAAS Policy Alert On-line

Published
2021

26. SHARC Mission Operations, Spectro-Radiometric Calibration and Data Analysis

Author

Scriven, Gordon, Scott, Carey, Hayes, Jesse, DeFelice, Jeff, Breen, John, Brown, Chelsea, Inman, Jennifer, Conn, Robert, Johnston, Chris, and Prabhu, Dinesh

Abstract

The SCIFLI Hayabusa2 Airborne Reentry Observation Campaign (SHARC) resulted in the acquisition of spectral data from a reentering capsule-type spacecraft and results are presented here. The Japan Aerospace Exploration Agency (JAXA) launched the Hayabusa2 probe in 2014 to collect samples from a C-type near-earth asteroid and return them to Earth. The Hayabusa2 sample return capsule (SRC) reentered the Earth’s atmosphere over Australia on 05 December 2020. The NASA Scientifically Calibrated In-FLight Imagery (SCIFLI) team equipped two aircraft with multiple sensors and 4-axis gimbal tracking systems to collect spectral data, aircraft positions, and sensor pointing information during the reentry. Data was successfully collected on all ten imaging spectrometers and when combined covered the UV-SWIR (300 to 1700nm) spectral range. The spectral signatures include thermal emission from the SRC and shock layer/wake emission from the ionized flowfield. These data will be used to validate selected NASA flowfield and radiance transport codes. As such, spectro-radiometrically calibrated data is required. This paper provides a summary of the mission planning, flight operations, and the comprehensive calibration process which included pre-mission characterizations, in-flight star calibrations and post-mission calibrations. The measured signatures include traceable uncertainty bounds and the uncertainty analysis is presented. The calibrated data is shown, and interesting spectral features are discussed. Finally, the measured data is compared with the NASA model predictions.

Published
2021

42. The Impact on UK Acquirers of Domestic, Crossborder, Public and Private Acquisitions

Author

Conn, Robert L., Cosh, Andy, Guest, Paul M., and Hughes, Alan

Subjects
Stock price forecasting -- Research, Acquisitions and mergers -- Research, Acquisitions and mergers -- Management, Acquisitions and mergers -- Information management, Market capitalization -- Research, Company systems management, Company business management, Banking, finance and accounting industries, Business
Abstract

A study is presented on United Kingdom acquirers' share returns and acquisition announcements after international and domestic acquisitions of public and private companies. Article discusses and contrasts conclusions from the study.

Published
2005

44. A restructured fusion energy sciences program: Advisory report

Author

Krebs, Martha A., Conn, Robert W., Clarke, John F., Cochran, Thomas B., Forsen, Harold K., Gavin, Jr., Joseph G., Gebbie, Katharine B., Hartline, Beverly K., Jasny, George R., Knotek, Michael L., Landis, John W., Rosen, Stephen L., Rosenbluth, Marshall N., Floyd Thomas, Jr., P., Thompson, Jr., James R., Venable, Demetrius D., and The Fusion Energy Advisory Committee

Published
1996
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45. Robot motion planning on N-dimensional star worlds among moving obstacles

Author

Conn, Robert A. and Kam, Moshe

Subjects
Robots -- Motion, Mobile robots -- Models
Abstract

Inspired by an idea of Rimon and Koditschek [1], we develop a motion planning algorithm for a point robot traveling among moving obstacles in an N-dimensional space. The navigating point must meet a goal point at a fixed time T, while avoiding several translating, nonrotating, nonintersecting obstacles on its way. All obstacles, the goal point, and the navigating point are confined to the interior of a star-shaped set in [R.sup.N] over the time interval [0, T]. Full a priori knowledge of the goal's location and of the obstacle's trajectories is assumed. We observe that the topology of the obstacle-free space is invariant in the time interval [0, T] as long as the obstacles are nonintersecting and as long as they do not cover the goal point at any time during [0, T]. Using this fact we reduce the problem, for any fixed time to [element of] [0, T], to a stationary-obstacle problem, which is then solved using the method of Rimon and Koditschek [1]. The fact that the obstacle-free space is topologically invariant allows a solution to the moving-obstacle problem over [0, T] through a continuous deformation of the stationary-obstacle solution obtained at time to. We construct a vector field whose flow is in fact one such deformation. We believe that ours is the first global solution to the moving-obstacle path-planning problem which uses vector fields. Index Terms - Motion planning, moving obstacles, vector fields.

Published
1998

46. Structured light using pseudorandom codes

Author

Morano, Raymond A., Ozturk, Cengizhan, Conn, Robert, Dubin, Stephen, and Nissanov, Jonathan

Subjects
Imaging systems -- Design and construction, Stereo vision -- Analysis, Machine vision -- Analysis
Abstract

We solve the correspondence problem in active stereo vision using a novel pseudorandom coded structured light (SL). This coding scheme performs well in the presence of occlusion. In settings where color coding is feasible, 3D information can be obtained using a single image. Index Terms - 3D imaging, structured light, perfect maps, pseudorandom arrays, active stereo vision, correspondence.

Published
1998

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