Results 41 to 50 of about 1,215,607 (285)

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

Optical Counterparts to X-Ray Sources in LSST DP1

The Astrophysical Journal Supplement Series
We present a crossmatch between a combined catalog of X-ray sources and the Vera C. Rubin Observatory Data Preview 1 (DP1) to identify optical counterparts.
Yuankun David Wang, Eric C. Bellm, Robert I. Hynes, Yue Zhao, Poshak Gandhi, Liliana Rivera Sandoval, Sandro Campos, Neven Caplar, Melissa DeLucchi, Konstantin Malanchev, Amy Secunda, Tobin M. Wainer   +11 more
doaj   +1 more source

The Dark Energy Camera Plane Survey 2 (DECaPS2): More Sky, Less Bias, and Better Uncertainties

The Astrophysical Journal Supplement Series, 2023
Deep optical and near-infrared imaging of the entire Galactic plane is essential for understanding our Galaxy’s stars, gas, and dust. The second data release of the Dark Energy Camera (DECam) Plane Survey extends the five-band optical and near-infrared ...
Andrew K. Saydjari, Edward F. Schlafly, Dustin Lang, Aaron M. Meisner, Gregory M. Green, Catherine Zucker, Ioana Zelko, Joshua S. Speagle, Tansu Daylan, Albert Lee, Francisco Valdes, David Schlegel, Douglas P. Finkbeiner   +12 more
doaj   +1 more source

Surveying the Bright Sky [PDF]

Proceedings of the International Astronomical Union, 2011
AbstractThe AAVSO is initiating a new survey of the sky. It will cover the entire visible sky, both north and south, on a daily basis, in two colours, and with a limiting magnitude of V = 17. This will be a perfect complement to LSST, but will be available years earlier and will continue into the indefinite future.
openaire   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

The Future of Astrometry in Space

Frontiers in Astronomy and Space Sciences, 2018
This contribution focuses on the importance of astrometry and on its future developments. Over the centuries astrometry has greatly contributed to the advance of the knowledge of the Universe.
Antonella Vallenari
doaj   +1 more source

OntOMat: Toward Ontology‐Based Product and Process Design Engineering and Optimization Solutions Fueling Circular Value Chains

Advanced Engineering Materials, EarlyView.
The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ, Jörg Hohe, Martin Kördel, Michael Giese, Niklas Toffert, Christian Seidel, Olaf Rehme, Patrik Schneider, Oliver Focke, Elie Abi Aoun, Claas Falldorf, Beñat Gutierrez, Alexandra Kühn, Sven Torstrick-von der Lieth, Christoph Herden, Erik Johannsen, Jan‐Uwe R. Schmidt, Felix Winkelmann, Andreas Schott, Daniel Schott   +19 more
wiley   +1 more source

The Hobby–Eberly Telescope VIRUS Parallel Survey (HETVIPS)

The Astrophysical Journal
The Hobby–Eberly Telescope (HET) VIRUS Parallel Survey (HETVIPS) is a blind spectroscopic program that sparsely covers approximately two-thirds of the celestial sphere and consists of roughly 252 million fiber spectra.
Gregory R. Zeimann, Maya H. Debski, Donald P. Schneider, William P. Bowman, Niv Drory, Gary J. Hill, Hanshin Lee, Phillip MacQueen, Matthew Shetrone   +8 more
doaj   +1 more source

Preatmospheric Detection of a Meter-sized Earth Impactor

The Planetary Science Journal, 2023
On 2020 September 18 U.S. Government (USG) sensors detected a bolide with peak bolometric magnitude of −19 over the Western Pacific. The impact was also detected by the Geostationary Lightning Mapper instrument on the GOES-17 satellite and infrasound ...
David L. Clark, Paul A. Wiegert, Peter G. Brown, Denis Vida, Aren Heinze, Larry Denneau   +5 more
doaj   +1 more source

Project Overview of the Beijing–Arizona Sky Survey [PDF]

Publications of the Astronomical Society of the Pacific, 2017
10 pages, submitted to ...
Zou, Hu, Zhou, X. U., Fan, Xiaohui, Zhang, Tianmeng, Zhou, Zhimin, Nie, Jundan, Peng, Xiyan, McGreer, Ian, Jiang, Linhua, Dey, Arjun, Fan, Dongwei, He, Boliang, Jiang, Zhaoji, Lang, Dustin, Lesser, Michael, Ma, Jun, Mao, Shude, Schlegel, David, Wang, Jiali   +18 more
openaire   +3 more sources