Results 61 to 70 of about 879,303 (290)
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Item analysis: basic concepts of physics students in geometric optics
Gravity: Jurnal Ilmiah Penelitian dan Pembelajaran Fisika, 2020 The purpose of this study was to analyze students' items and abilities—the analysis for mapping test instruments and students' basic concepts regarding optics subjects before lectures are held. The test participants were 35 physics students. The analysis
Godelfridus Hadung Lamanepa +2 more
doaj +1 more source
Spin optics for gravitational waves
, 2021 We present the geometric optics expansion for circularly polarized gravitational waves on a curved spacetime background, to subleading order. We call spin optics to the subleading order geometric optics expansion, which involves modifying the standard ...
Pravin Kumar Dahal (14355966)
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Advanced Engineering Materials, EarlyView.This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil +2 more
wiley +1 more source
, 2022 15491552The beam focusing optics designed for a passenger screening system operating at 360 GHz are presented. The elevation focus is based on an elliptical mirror and a pivoting flat mirror for sampling targets at different heights.
Briese, G. +3 more
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Geometric continuous patch complexes [PDF]
, 1987 A theory of geometric continuity of arbitrary order is presented. Conditions of geometric continuity at a vertex where a number of patches meet are investigated.
Hahn, JM
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Radiation Pattern Analysis of Reflector Antennas Using CAD Model-Based Physical Optics Method
IEEE Access, 2019 Radiation pattern analysis is important in reflector antenna design. Mesh model based physical optics method is widely used in such circumstance. There are always geometric errors between mesh model and CAD model, and the analysis will be subjected to ...
Zhen Lei
doaj +1 more source
Weakly Nonlinear Geometric Optics for Hyperbolic Systems of Conservation Laws
, 2016 We present a new approach to analyze the validation of weakly nonlinear geometric optics for entropy solutions of nonlinear hyperbolic systems of conservation laws whose eigenvalues are allowed to have constant multiplicity and corresponding ...
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Advanced Engineering Materials, EarlyView.Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich +3 more
wiley +1 more source
Advanced Intelligent SystemsWaveguides are a crucial optical solution for see‐through near‐eye displays. For waveguide‐based systems, lightweight and compact projection optics are essential.
Ximeng Wang +5 more
doaj +1 more source