Results 141 to 150 of about 12,772,525 (351)

Multiphoton‐Printed Microrobotic Arrays Powered by Discrete, Monolithically Integrated Hydrogel Actuators

open access: yesAdvanced Robotics Research, EarlyView.
Functional surfaces are investigated as a foundation for reconfigurable microscale systems with sensing and actuation capabilities. Advances in additive manufacturing enable our development of planar arrays of hybrid‐material, compliant microdevices that convert environmental stimuli into programmed motion and visual responses.
Sandra Edward   +5 more
wiley   +1 more source

Tractable convex relaxations of nonconvex quadratic optimization problems [PDF]

open access: yes
A quadratically constrained quadratic program (QCQP) is an optimization problem in which a (possibly nonconvex) quadratic function is minimized subject to a combination of linear and quadratic constraints.
Qiu, Yuzhou
core   +1 more source

Consensus Formation and Change are Enhanced by Neutrality

open access: yesAdvanced Science, EarlyView.
Neutral agents are shown to enhance both the formation and overturning of consensus in collective decision‐making. A general mathematical model and experiments with locusts and humans reveal that neutrality enables robust consensus via simple interactions and accelerates consensus change by reducing effective population size.
Andrei Sontag   +3 more
wiley   +1 more source

Solutions of several general quadratic partial differential-difference equations in ℂ2

open access: yesDemonstratio Mathematica
In this article, we have introduced general transformation to solving the general quadratic equations. It is of interest to know about the existence and form of the solutions of general quadratic functional equations.
Ahamed Molla Basir, Mandal Sanju
doaj   +1 more source

The Generalized Quadratic Expenditure System [PDF]

open access: yes
This chapter presents the indirect preferences for all full rank Gorman and Lewbel demand systems. Each member in this class of demand models is a Generalized Quadratic Expenditure System (GQES). This representation allows applied researchers to choose a
Jeffrey LaFrance, Rulon Pope
core  

Solid Harmonic Wavelet Bispectrum for Image Analysis

open access: yesAdvanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown   +3 more
wiley   +1 more source

Canonical form of the quadratic form of quadric surfaces

open access: yes, 1989
Reduction of the quadratic form in the three variables x, y, and z to its canonical form was done by choosing a rectangular coordinate transformation.
Gapud, Al P
core  

Hermitian Forms and Systems of Quadratic Forms

open access: yesDocumenta Mathematica, 2018
We associate to every symmetric (antisymmetric) Hermitian form a system of quadratic forms over the base field which determines its isotropy and metabolicity behaviour. It is shown that two even Hermitian forms are isometric if and only if their associated systems are equivalent.
openaire   +2 more sources

Diversity of Pharmaceuticals Enhances Antibiotic Resistance in the Invertebrate Gut via Biofilm‐Mediated Mechanisms

open access: yesAdvanced Science, EarlyView.
Pharmaceutical diversity acts as an independent driver of antibiotic resistance in soil invertebrates. While bulk soil remains unaffected, the collembolan gut microbiome exhibits significant resistance gene enrichment under complex chemical exposure and diurnal warming.
Yi‐Fei Wang   +11 more
wiley   +1 more source

Spectral form factor of quadratic R-para-particle SYK model with random matrix coupling

open access: yesJournal of High Energy Physics
This paper investigates the spectral form factor (SFF) of the quadratic R-para-particle Sachdev-Ye-Kitaev (R-PSYK2) model with various random matrix ensemble couplings. We generalize previous work on Gaussian Unitary Ensemble (GUE) couplings to all three
Tingfei Li
doaj   +1 more source

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