Results 41 to 50 of about 5,152,512 (204)

Periodic Solutions and Stability Analysis for Two-Coupled-Oscillator Structure in Optics of Chiral Molecules

open access: yesMathematics, 2022
Chirality is an indispensable geometric property in the world that has become invariably interlocked with life. The main goal of this paper is to study the nonlinear dynamic behavior and periodic vibration characteristic of a two-coupled-oscillator model
Jing Li, Yuying Chen, Shaotao Zhu
doaj   +1 more source

Temperature elevation broadens the dietary niche of an insect herbivore

open access: yesEcological Entomology, EarlyView.
The realised dietary niche in Chrysomela lapponica was the narrowest at 10°C, whereas higher temperatures (15–25°C) broadened the dietary niche by increasing preference for and survival on suboptimal host plants. Elevated temperature broadened the realised dietary niche through both direct effects on beetles and indirect effects mediated by temperature‐
Elena L. Zvereva   +2 more
wiley   +1 more source

Plant cis‐regulatory grammar: Decoding the multidimensional code of transcriptional regulation for programmable crop engineering

open access: yesJournal of Integrative Plant Biology, EarlyView.
This review decodes the grammar of plant cis‐regulatory elements, revealing that their function emerges from sequence, chromatin accessibility, 3D topology, and cell type context. It highlights how single‐cell omics, CRISPR dissection, and AI‐driven design converge to enable predictive engineering and crop improvement. ABSTRACT Cis‐regulatory elements (
Libin Zhang, Maoteng Li
wiley   +1 more source

The fundamental theorem of asset pricing with and without transaction costs

open access: yesMathematical Finance, Volume 35, Issue 2, Page 567-609, April 2025.
Abstract We prove a version of the fundamental theorem of asset pricing (FTAP) in continuous time that is based on the strict no‐arbitrage condition and that is applicable to both frictionless markets and markets with proportional transaction costs. We consider a market with a single risky asset whose ask price process is higher than or equal to its ...
Christoph Kühn
wiley   +1 more source

Dynamics of Some Perturbed Morse-Type Oscillators: Simulations and Applications

open access: yesMathematics
The purpose of this paper is to investigate some Morse-type oscillators. In its original form, it is a model for describing the vibrations of a diatomic molecule.
Nikolay Kyurkchiev   +5 more
doaj   +1 more source

Higher order stroboscopic averaged functions: a general relationship with Melnikov functions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
In the research literature, one can find distinct notions for higher order averaged functions of regularly perturbed non-autonomous T-periodic differential equations of the kind x′=ε F(t,x,ε ). By one hand, the classical (stroboscopic) averaging method provides asymptotic estimates for its solutions in terms of some uniquely
openaire   +4 more sources

Risk Measure Duality Without Structure

open access: yesMathematical Finance, EarlyView.
ABSTRACT We study risk measures on vector spaces of random variables which a priori have little structure, such as spaces lacking law invariance or a lattice structure. Ensuring the existence of a tractable dual representation (one which does not contain non‐sigma‐additive measures) is one of the main problems in risk measure theory, and we address it ...
Vasily Melnikov
wiley   +1 more source

Bifurcation of Limit Cycles by Perturbing a Piecewise Linear Hamiltonian System

open access: yesAbstract and Applied Analysis, 2013
This paper concerns limit cycle bifurcations by perturbing a piecewise linear Hamiltonian system. We first obtain all phase portraits of the unperturbed system having at least one family of periodic orbits.
Yanqin Xiong, Maoan Han
doaj   +1 more source

Constraints on the hadronic light-by-light in the Melnikov-Vainshtein regime

open access: yesJournal of High Energy Physics, 2023
The muon anomalous magnetic moment continues to attract attention due to the possible tension between the experimentally measured value and the theoretical Standard Model prediction.
Johan Bijnens   +2 more
doaj   +1 more source

Nonlinear Actuation of Casimir Oscillators toward Chaos: Comparison of Topological Insulators and Metals

open access: yesUniverse, 2021
In the current study, we explore the sensitivity of the actuation dynamics of electromechanical systems on novel materials, e.g., Bi2Se3, which is a well-known 3D Topological Insulator (TI), and compare their response to metallic conductors, e.g., Au ...
Fatemeh Tajik   +3 more
doaj   +1 more source

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