Results 91 to 100 of about 37,919 (260)
Periodic solutions of polynomial non-autonomous differential equations
Electronic Journal of Differential Equations, 2005 We present some results on the number of periodic solutions for scalar non-autonomous polynomial equations of degree five. We also consider a class of polynomial equations of any degree. Our results give upper bounds for the number of limit cycles of two-
Mohamad A. M. Alwash
doaj
Advanced Optical Materials, EarlyView.Thermal expansion and the thermo‐optic effect in solids are closely coupled, reflecting concurrent changes in mass density and polarizability. Using echo‐resolved THz spectroscopy, we simultaneously determine sub‐micrometer thermal expansion and complex refractive index changes of MgO and Al2O3 from 10–325 K. The analysis yields both the coefficient of
Nicolas S. Beermann +5 more
wiley +1 more source
Infinitely Many Quasi-Coincidence Point Solutions of Multivariate Polynomial Problems
Abstract and Applied Analysis, 2013 Let F:ℝn×ℝ→ℝ be a real-valued polynomial function of the form F(x¯,y)=as(x¯)ys+as-1(x¯)ys-1+⋯+a0(x¯) where the degree s of y in F(x¯,y) is greater than 1. For arbitrary polynomial function f(x¯)∈ℝ[x¯], x¯∈ℝn, we will find a polynomial solution y(x¯)∈ℝ[x¯]
Yi-Chou Chen
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Polynomial solutions of binomial congruences [PDF]
Journal of the Australian Mathematical Society, 1960 Polynomial solutions of a few binomial congruences have been known for a long time. For instance Legendre showed that the congruence has a solution this being the expansion of as far as the term of degree m — 3. [1] It seems that only restricted types, e.g. (1), have been investigated.
openaire +1 more source
Advanced Optical Materials, EarlyView.Goos‐Hänchen shift (GHS) is a phenomenon in which an optical beam experiences a longitudinal displacement upon total internal reflection. In this work, we experimentally demonstrate an enhanced GHS in the wavelength domain using a helical fiber grating (HFG).
Zhang Meng +7 more
wiley +1 more source
Hard‐Magnetic Soft Millirobots in Underactuated Systems
Advanced Robotics Research, EarlyView.This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang +4 more
wiley +1 more source
Advanced Robotics Research, EarlyView.Embedded flexible sensing technologies advance underwater soft robotics, yet most systems still suffer from hysteresis and limited perceptiveness. Instead, vision‐based tactile sensors provide reliable and rapid feedback essential for complex underwater tasks.
Qiyi Zhang +5 more
wiley +1 more source
Cosmological solutions in polynomial affine gravity with torsion
European Physical Journal C: Particles and FieldsThe Polynomial Affine Gravity is an alternative gravitational model, where the interactions are mediated solely by the affine connection, instead of the metric tensor.
Oscar Castillo-Felisola +4 more
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Polynomial Solutions of Electric Field Equations in Anisotropic Media
MANAS: Journal of EngineeringThe time-dependent system of partial differential equations of the second orderdescribing the electric wave propagation in electrically and magnetically anisotropichomogeneous media is considered in the paper.
Meltem Altunkaynak
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Advanced Robotics Research, EarlyView.Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds +2 more
wiley +1 more source