Results 61 to 70 of about 2,875,390 (257)

Omnipresent coexistence of rogue waves in a nonlinear two-wave interference system and its explanation by modulation instability

open access: yesPhysical Review Research, 2021
We investigate the coexisting rogue wave dynamics associated with two fundamental-frequency optical waves interacting in a quadratic nonlinear medium.
Changchang Pan   +5 more
doaj   +1 more source

Multidirectional Motion Strategy of Miniature Water Surface Robot Actuated by Single Exciter

open access: yesAdvanced Robotics Research, EarlyView.
A novel multidirectional motion strategy on the water surface based on a single exciter is proposed, and a single‐exciter single‐plate module is developed for actuation. The driving forces generation mechanism of the module is revealed from the perspective of the asymmetric surface wave field.
Haoxuan He   +4 more
wiley   +1 more source

Extended hydrodynamic equations for binary granular mixtures [PDF]

open access: yesEPJ Web of Conferences
The derivation of 2 × 14-moment equations for a dilute binary granular mixture is outlined, following Grad’s moment method. In addition to the mass, momentum and energy equations for each species, the deviatoric stress tensor, the heat flux vector and ...
Rongali Ramakrishna, Alam Meheboob
doaj   +1 more source

Gait Analysis of Pak Biawak: A Necrobot Lizard Built using the Skeleton of an Asian Water Monitor (Varanus Salvator)

open access: yesAdvanced 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

Complete geometric invariant study of two classes of quadratic systems

open access: yesElectronic Journal of Differential Equations, 2012
In this article, using affine invariant conditions, we give a complete study for quadratic systems with center and for quadratic Hamiltonian systems.
Joan C. Artes   +2 more
doaj  

Vector-like quarks with a scalar triplet

open access: yesPhysics Letters B, 2015
We study a minimal extension to the Standard Model with an additional real scalar triplet, Σ, and a single vector-like quark, T. This class of models appear naturally in extensions of the Littlest Higgs model that incorporate dark matter without the need
Estefania Coluccio Leskow   +2 more
doaj   +1 more source

More stringy effects in target space from Double Field Theory

open access: yesJournal of High Energy Physics, 2020
In Double Field Theory, the mass-squared of doubled fields associated with bosonic closed string states is proportional to N L + N R − 2. Massless states are therefore not only the graviton, anti-symmetric, and dilaton fields with (N L = 1, N R = 1) such
Chen-Te Ma, Franco Pezzella
doaj   +1 more source

Numerical Modeling of Photothermal Self‐Excited Composite Oscillators

open access: yesAdvanced Robotics Research, EarlyView.
We present a numerical framework for simulating photothermal self‐excited oscillations. The driving mechanism is elucidated by highlighting the roles of inertia and overshoot, as well as the phase lag between the thermal moment and the oscillation angle, which together construct the feedback loop between the system state and the environmental stimulus.
Zixiao Liu   +6 more
wiley   +1 more source

Twin Quadratic Polynomial Vector Fields in the Space C3 [PDF]

open access: yes
In this paper we study quadratic polynomial vector fields on C3 with 8 isolated singularities. Either two polynomial vector fields share six singularities with the same position and spectra and the remaining two singularities have some relation on their ...
Valls, Clàudia, Llibre, Jaume
core   +1 more source

Polynomial solutions of Pell’s equation and fundamental units in real quadratic fields

open access: yes, 2008
Solving Pell’s equation is of relevance in finding fundamental units in real quadratic fields and for this reason polynomial solutions are of interest in that they can supply the fundamental units in infinite families of such fields.
Quadratic Fields, J. Mc Laughlin
core  

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