Results 71 to 80 of about 298 (141)

Material Property Sensitivity of Light Curve Attitude Estimation for the Lunar Trailblazer

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract The Lunar Trailblazer (LTB) spacecraft launched on 27 February 2025, toward a planned low‐lunar orbit. Eleven hours into its mission, contact with Trailblazer was lost, and recovery efforts began. Estimating the orientation and angular velocity state of Trailblazer was central for recovery to determine whether and when the vehicle could be ...
Liam Robinson, Amanda Steckel, Carolin Frueh, Bethany Ehlmann   +3 more
wiley   +1 more source

A Conjugate Operator Pair of Partial Differential Equations Bridging Born and Kirchhoff Approximations for Wave‐Equation Inversion

Geophysical Prospecting, Volume 74, Issue 6, July 2026.
ABSTRACT A conjugate operator pair is introduced for wave‐equation Kirchhoff modelling and migration, formulated as time‐space partial differential equations. The operator pair allows for iterative linearized waveform inversion and supports the reconstruction of angle‐dependent reflectivity images. The proposed forward modelling operator represents the
Wei Zhang, Mauricio D. Sacchi
wiley   +1 more source

Toddlers’ Active Gaze Behavior Supports Self‐Supervised Object Learning

Developmental Science, Volume 29, Issue 4, July 2026.
ABSTRACT Toddlers learn to recognize objects from different viewpoints with almost no supervision. During this learning, they execute frequent eye and head movements that shape their visual experience. It is presently unclear if and how these behaviors contribute to toddlers’ emerging object recognition abilities.
Zhengyang Yu, Arthur Aubret, Marcel C. Raabe, Jane Yang, Chen Yu, Jochen Triesch   +5 more
wiley   +1 more source

Wall–chamber decompositions for generalised Monge–Ampère equations

Journal of the London Mathematical Society, Volume 114, Issue 1, July 2026.
Abstract Generalised Monge–Ampère (gMA) equations form a large class of PDE including Donaldson's J‐equation, inverse Hessian equations, some supercritical deformed Hermitian–Yang–Mills (dHYM) equations and some Z‐critical equations. Solvability of these equations is characterised by numerical criteria involving intersection numbers over all ...
Sohaib Khalid, Zakarias Sjöström Dyrefelt   +1 more
wiley   +1 more source

λ-Deformation: A Canonical Framework for Statistical Manifolds of Constant Curvature. [PDF]

Entropy (Basel), 2022
Zhang J, Wong TL.
europepmc   +1 more source

Affine hypersurfaces and superintegrable systems

Journal of the London Mathematical Society, Volume 114, Issue 1, July 2026.
Abstract It was recently shown that under mild assumptions, second‐order conformally superintegrable systems can be encoded in a (0,3)‐tensor, called structure tensor. For abundant systems, this approach led to algebraic integrability conditions that essentially allow one to restore a system from the knowledge of its structure tensor in a point on the ...
Vicente Cortés, Andreas Vollmer
wiley   +1 more source

Scale space detector for analyzing spatiotemporal ventricular contractility and nuclear morphogenesis in zebrafish. [PDF]

iScience, 2022
Teranikar T, Villarreal C, Salehin N, Ijaseun T, Lim J, Dominguez C, Nguyen V, Cao H, Chuong CJ, Lee J.   +9 more
europepmc   +1 more source

Dehydrogenative Coupling of Hydrosilanes With Alcohols and Amines: A Concerted Asynchronous Mechanism With an Early Hidden Reaction Intermediate

International Journal of Quantum Chemistry, Volume 126, Issue 12, June 15, 2026.
DFT reveals a concerted asynchronous mechanism with a hidden reaction intermediate in hydrosilane coupling (HRI), which occurs prior to a pentacoordinated silicon transition state. This mechanism indicates that the concerted asynchronous SiO bond formation and SiH bond cleavage precede the HH bond formation.
Imen Abidli, Sheila A. Martín, Bahoueddine Tangour, Abdelhamid Sayari   +3 more
wiley   +1 more source

Sodium Tetraazidoaurate(III)—From Na[AuCl4]·2H2O to Na[Au(N3)4] and Beyond One Step at a Time

Chemistry – A European Journal, Volume 32, Issue 22, 9 June 2026.
Novel sodium chlorido‐/azidoaurate(III) dihydrates Na[AuCl4–x(N3)x]·2H2O (x = 0, 1, 2, 3, 4) provide the first example of a complete series of gradual substitution on tetramer complex anions to be described. Controlled dehydration of Na[Au(N3)4]·2H2O leads to Na[Au(N3)4]·H2O and Na[Au(N3)4], the latter being a highly explosive material.
Mehmet Somer, Joannis Psilitelis, Raul Cardoso‐Gil, Thomas Doert, Franziska Jach, Ayberk Yılmaz, Alexander Ovchinnikov, Yurii Prots, Helge Rosner, Marcus P. Schmidt, Peter Höhn   +10 more
wiley   +1 more source

Casorati Inequalities for Statistical Submanifolds in Kenmotsu Statistical Manifolds of Constant ϕ-Sectional Curvature with Semi-Symmetric Metric Connection. [PDF]

Entropy (Basel), 2022
Decu S, Vîlcu GE.
europepmc   +1 more source