Results 141 to 150 of about 509,144 (286)
arXiv, 2004 The theory of Space rotations is introduced. The relativity principle is generalized to satisfy to reference frames rotating in 3D space. It is shown that the most postulates and limitations of quantum theories are consequences of this extended relativity principle.
arxiv
Mathematic model of high speed rotational arc sensor
Chinese Journal of Mechanical Engineering, 2007 A mathematical model of high speed rotational arc sensor, which is used in gas metal arc welding (GMAW) of fillet joints, is developed. It is based on the mathematical model of GMA welding system and Halmoy's wire melting model. The variations of welding current, arc length and wire extension are simulated by using the developed model. It is shown that
Shi Y. +3 more
openaire +2 more sources
Emergent Locomotion in Self‐Sustained, Mechanically Connected Soft Matter Rings
Advanced Materials, EarlyView.Thermally fueled, self‐moving twisted rings made from liquid crystal elastomers are investigated. By studying single rings and linked knots, it is shown how autonomous locomotion emerges through coupling between the rings. The movement is programmable via handedness control at connection points, offering insights into collective behavior and ...
Hongshuang Guo +3 more
wiley +1 more source
On the composition of finite rotations in $\mathbb{E}^4$ [PDF]
arXiv, 2015 We achieve compositions rules for the geometric parameters of the composed rotations, which is in a certain sense analogous to the well known Rodrigues formula. We also obtain a necessary and sufficient condition for a composition of two simple rotations in $\mathbb{E}^4$ to be a simple rotation.
arxiv
Temperature‐Dependent Properties of Atomic Layer Deposition‐Grown TiO2 Thin Films
Advanced Materials Interfaces, EarlyView.This study explores the temperature‐dependent properties of TiO₂ thin films grown by atomic layer deposition using tetrakis dimethyl amino titanium and water. The films exhibit increased oxynitride incorporation as the process temperature increases from 150 to 350 °C, significantly influencing their optical and electrical properties. Findings highlight
Nimarta Kaur Chowdhary +1 more
wiley +1 more source
On a model for internal waves in rotating fluids [PDF]
arXiv, 2019 In this paper a rotating two-fluid model for the propagation of internal waves is introduced. The model can be derived from a rotating-fluid problem by including gravity effects or from a nonrotating one by adding rotational forces in the dispersion balance.
arxiv
Frontiers in EducationMental rotation (MR), a key aspect of spatial reasoning, is highly predictive of success in STEM fields. This study analyzed strategies employed by 27,600 eighth-grade students during a digital MR task from the 2017 National Assessment of Educational ...
Xin Wei, Susu Zhang, Jihong Zhang
doaj +1 more source
Advanced Materials Interfaces, EarlyView.This research explores local bandgap, composition, and strain variations across InxGa₁−xAs quantum wells within a metamorphic laser structure using high‐resolution scanning transmission electron microscopy (STEM) and low‐loss electron energy loss spectroscopy (EELS). Results reveal significant inhomogeneities, particularly near interfaces, with bandgap
Nicholas Stephen +10 more
wiley +1 more source
Physical Review Physics Education Research, 2018 [This paper is part of the Focused Collection on Astronomy Education Research.] We examined teachers’ spatial-scientific reasoning and the alternative conceptions they held regarding Earth-space content. While participating in a professional development (
Jennifer Wilhelm +3 more
doaj +1 more source
Advancement in Colloidal Metasurfaces: Approaches for Scalable Photonic Devices
Advanced Materials Interfaces, EarlyView.This perspective explores colloidal metasurfaces composed of plasmonic and emitting nanoparticles assembled by laser interference lithography and template‐assisted self‐assembly methods. Precise design strategies achieve directional emission, low‐threshold lasing, and tunable photonic bandgaps.
Sezer Seçkin +2 more
wiley +1 more source