Zobrazeno 1 - 10
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pro vyhledávání: '"A. P. Sheppard"'
Although a good portion of elementary linear algebra concerns itself with matrices over a field such as $\mathbb{R}$ or $\mathbb{C}$, many combinatorial problems naturally surface when we instead work with matrices over a finite field. As some recent
Externí odkaz:
http://arxiv.org/abs/2412.11358
Autor:
Morales, Giorgio, Sheppard, John
Obtaining high certainty in predictive models is crucial for making informed and trustworthy decisions in many scientific and engineering domains. However, extensive experimentation required for model accuracy can be both costly and time-consuming. T
Externí odkaz:
http://arxiv.org/abs/2412.10570
Integer geometry on a plane deals with objects whose vertices are points in $\mathbb Z^2$. The congruence relation is provided by all affine transformations preserving the lattice $\mathbb Z^2$. In this paper we study circumscribed circles in integer
Externí odkaz:
http://arxiv.org/abs/2412.04662
Autor:
Hsieh, Henry H., Noonan, John W., Kelley, Michael S. P., Bodewits, Dennis, Pittichova, Jana, Thirouin, Audrey, Micheli, Marco, Knight, Matthew M., Bannister, Michele T., Chandler, Colin O., Holt, Carrie E., Hopkins, Matthew J., Kim, Yaeji, Moskovitz, Nicholas A., Oldroyd, William J., Patterson, Jack, Sheppard, Scott S., Tan, Nicole, Trujillo, Chadwick A., Ye, Quanzhi
We report the detection of water vapor associated with main-belt comet 358P/PANSTARRS on UT 2024 January 8-9 using the NIRSPEC instrument aboard JWST. We derive a water production rate of Q(H2O)=(5.0+/-0.2)x10^25 molecules/s, marking only the second
Externí odkaz:
http://arxiv.org/abs/2411.07435
Autor:
Strauss, Ryder, McNeill, Andrew, Trilling, David E., Valdes, Francisco, Bernardinell, Pedro H., Fuentes, Cesar, Gerdes, David W., Holman, Matthew J., Juric, Mario, Lin, Hsing Wen, Markwardt, Larissa, Mommert, Michael, Napier, Kevin J., Oldroyd, William J., Payne, Matthew J., Rivkin, Andrew S., Schlichting, Hilke E., Sheppard, Scott S., Smotherman, Hayden, Trujillo, Chadwick A, Adams, Fred C., Chandler, Colin Orion
Publikováno v:
The Astronomical Journal, Volume 168, Number 4 (2024)
Superfast rotators (SFRs) are small solar system objects that rotate faster than generally possible for a cohesionless rubble pile. Their rotational characteristics allow us to make inferences about their interior structure and composition. Here, we
Externí odkaz:
http://arxiv.org/abs/2410.01147
Autor:
Cheng, Si, Blanco, Magali N., Larson, Timothy V., Sheppard, Lianne, Szpiro, Adam, Shojaie, Ali
Dimension reduction is often the first step in statistical modeling or prediction of multivariate spatial data. However, most existing dimension reduction techniques do not account for the spatial correlation between observations and do not take the
Externí odkaz:
http://arxiv.org/abs/2408.01662
Time is, figuratively and literally, becoming the new dimension for crystalline matter. As such, rapid recent progress on time-varying media gave rise to the notion of temporal and spatiotemporal crystals. Fundamentally rethinking the role of time, w
Externí odkaz:
http://arxiv.org/abs/2407.02176
Autor:
Morales, Giorgio, Sheppard, John W.
Symbolic regression (SR) methods attempt to learn mathematical expressions that approximate the behavior of an observed system. However, when dealing with multivariate systems, they often fail to identify the functional form that explains the relatio
Externí odkaz:
http://arxiv.org/abs/2406.17834
Exposure assessment is fundamental to air pollution cohort studies. The objective is to predict air pollution exposures for study subjects at locations without data in order to optimize our ability to learn about health effects of air pollution. In a
Externí odkaz:
http://arxiv.org/abs/2406.01982
Diffusive transport has implications for the long-term status of underground storage of hydrogen (H$_2$) fuel and carbon dioxide (CO$_2$), technologies which are being pursued to mitigate climate change and advance the energy transition. Once injecte
Externí odkaz:
http://arxiv.org/abs/2403.16659