Results 101 to 110 of about 11,457,962 (286)

Mixed‐Integer Linear Programming Approaches for Nested p$$ p $$‐Center Problems With Absolute and Relative Regret Objectives

Networks, Volume 87, Issue 1, Page 62-82, January 2026.
ABSTRACT We introduce the nested p$$ p $$‐center problem, a multi‐period variant of the well‐known p$$ p $$‐center problem. Using the nesting concept allows us to obtain solutions consistent over the considered time horizon, that is, facilities that are opened in a given time period stay open for subsequent periods.
Christof Brandstetter, Markus Sinnl
wiley   +1 more source

Central potentials on spaces of constant curvature: The Kepler problem on the two-dimensional sphere $S^2$ and the hyperbolic plane $H^2$

, 2005
The Kepler problem is a dynamical system that is well defined not only on the Euclidean plane but also on the sphere and on the Hyperbolic plane. First, the theory of central potentials on spaces of constant curvature is studied.
Goldstein H., José F. Cariñena, Kalnins E. G., Manuel F. Rañada, Mariano Santander, Marmo G., Olevski M. N., Schrödinger E., Whittaker E. T.   +8 more
core   +1 more source

The Incorporation of AI‐Enabled Culturally Relevant Narrative‐Based Learning Pedagogy to Engage Students in a Diverse STEM Classroom

Reading Research Quarterly, Volume 61, Issue 1, January/February/March 2026.
The student created comic strip reflects their understanding of renewable energy concepts and climate change. ABSTRACT This study explores how AI‐enabled, culturally relevant, narrative‐based learning pedagogy influences engagement among ninth‐grade students in an Earth Science course. Conducted in two classrooms in a southeastern U.S.
Nitin U. Jain, Eliza Braden
wiley   +1 more source

Initial Parameter Analysis about Resonant Orbits in Earth-Moon System

Advances in Astronomy, 2019
The initial parameters about resonant orbits in the Earth-Moon system were investigated in this study. Resonant orbits with different ratios are obtained in the two-body problem and planar circular restricted three-body problem (i.e., PCRTBP).
Li-Bo Liu, Ying-Jing Qian, Xiao-Dong Yang   +2 more
doaj   +1 more source

Numerical Methods and Closed Orbits in the Kepler-Heisenberg Problem

, 2017
The Kepler-Heisenberg problem is that of determining the motion of a planet around a sun in the sub-Riemannian Heisenberg group. The sub-Riemannian Hamiltonian provides the kinetic energy, and the gravitational potential is given by the fundamental ...
Dods, Victor, Shanbrom, Corey
core   +1 more source

Chaos in two-dimensional Kepler problem with spin-orbit coupling

, 2017
We consider classical two-dimensional Kepler system with spin-orbit coupling and show that at a sufficiently strong coupling it demonstrates a chaotic behavior. The chaos emerges since the spin-orbit coupling reduces the number of the integrals of motion
Sherman, E. Ya., Stephanovich, V. A.
core   +1 more source

Exploring deep and hot adiabats as a potential solution to the radius\n inflation problem in brown dwarfs: Long-timescale models of the deep\n atmospheres of KELT-1b, Kepler-13Ab, and SDSS1411B [PDF]

, 2021
Félix Sainsbury-Martinez, S. L. Casewell, Joshua D. Lothringer, M. W. Phillips, Pascal Tremblin   +4 more
openalex   +1 more source

Circularization in the Damped Kepler Problem

SIAM Journal on Applied Dynamical Systems
In this paper, we revisit the damped Kepler problem within a general family of nonlinear damping forces with magnitude $\delta \vert u\vert^{\beta}\vert \dot u\vert^{\alpha+1}$, depending on three parameters $\delta>0,\alpha\ge 0$ and $\beta\ge 0$, and address the general question of circularization whereby orbits tend to become more circular as they ...
K. U. Kristiansen, R. Ortega
openaire   +4 more sources

Regularized variational principles for the perturbed Kepler problem [PDF]

, 2020
V. Barutello, R. Ortega, G. Verzini
semanticscholar   +1 more source

Symbolic Dynamics of the Diamagnetic Kepler Problem Without Involving Bounces [PDF]

, 1999
Zuo-Bing Wu, Wei‐Mou Zheng
openalex   +1 more source