Results 91 to 100 of about 4,801,270 (329)

Synthetic 3D Spin-Orbit Coupling

open access: yes, 2012
We describe a method for creating a three-dimensional analogue to Rashba spin-orbit coupling in systems of ultracold atoms. This laser induced coupling uses Raman transitions to link four internal atomic states with a tetrahedral geometry, and gives rise
Brandon M. Anderson   +4 more
core   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Symmetries of partial differential equations

open access: yes, 2003
We establish a link between the study of completely integrable systems of partial differential equations and the study of generic submanifolds in C^n.
Gaussier, Hervé, Merker, Joël
core   +3 more sources

Infrared Neural Stimulation Elicits Distinct Molecular Pathways in Astrocytes Based on Laser Pulse Parameters

open access: yesAdvanced Biology, EarlyView.
Infrared (IR) light evokes distinct calcium and water transport responses in astrocytes, depending on stimulation duration and protocol. This study uses widefield imaging and pharmacology to reveal differential engagement of astroglial signaling pathways.
Wilson R. Adams   +7 more
wiley   +1 more source

Bis(diisopropylammonium) tetrachloridocuprate(II)

open access: yesActa Crystallographica Section E, 2012
In the title molecular salt, (C6H16N)2[CuCl4], the CuII ion adopts an extremely distorted tetrahedral coordination geometry. All the ammonium H atoms are involved in N—H...Cl hydrogen bonds, which serve to link the cations and anions into ...
Jie Xu
doaj   +1 more source

Towards Understanding the Geometry of Knowledge Graph Embeddings

open access: yesAnnual Meeting of the Association for Computational Linguistics, 2018
Knowledge Graph (KG) embedding has emerged as a very active area of research over the last few years, resulting in the development of several embedding methods.
Chandrahas   +2 more
semanticscholar   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian   +4 more
wiley   +1 more source

Chloridotris(3,5-dimethyl-1H-pyrazole-κN2)(formato-κO)copper(II)–dichloridobis(3,5-dimethyl-1H-pyrazole-κN2)copper(II) (2/1)

open access: yesActa Crystallographica Section E, 2011
The asymmetric unit of the title compound, [Cu(CHO2)Cl(C5H8N2)3]2·[CuCl2(C5H8N2)2] or 2[A]·[B], contains one A molecule and one half-molecule of B, located on a centre of inversion. The CuII environments in A and B are different.
Yuliya M. Davydenko   +4 more
doaj   +1 more source

Statistical geometry in scalar turbulence

open access: yes, 2000
A general link between geometry and intermittency in passive scalar turbulence is established. Intermittency is qualitatively traced back to events where tracer particles stay for anomalousy long times in degenerate geometries characterized by strong ...
A. Celani   +23 more
core   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

open access: yesAdvanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy