Results 41 to 50 of about 1,998,384 (219)
Factors controlling the bifurcation structure of sea ice retreat [PDF]
, 2012 The contrast in surface albedo between sea ice and open ocean suggests the possibility of an unstable climate state flanked by two separate stable climate states. Previous studies using idealized single-column models and comprehensive climate models have
Eisenman, Ian
core +1 more source
Non-smooth dynamics of a SIR model with nonlinear state-dependent impulsive control
Mathematical Biosciences and Engineering, 2023 The classic SIR model is often used to evaluate the effectiveness of controlling infectious diseases. Moreover, when adopting strategies such as isolation and vaccination based on changes in the size of susceptible populations and other states, it is ...
Chenxi Huang, Qianqian Zhang, Sanyi Tang
doaj +1 more source
The Lambrechts-Stanley Model of Configuration Spaces [PDF]
, 2018 We prove the validity over $\mathbb{R}$ of a commutative differential graded algebra model of configuration spaces for simply connected closed smooth manifolds, answering a conjecture of Lambrechts--Stanley. We get as a result that the real homotopy type
Idrissi, Najib
core +3 more sources
A new four-dimensional chaotic attractor
Ain Shams Engineering Journal, 2018 A new four-dimensional chaotic system is introduced in this paper, it is mainly consist of four multiplier terms and four simple terms. The system has different structure and topology of existing four-dimensional systems and produces two equilibrium ...
M. Ababneh
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Whole‐Body Pattern of Muscle Degeneration and Progression in Sarcoglycanopathies
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To characterize whole‐body intramuscular fat distribution pattern in patients with sarcoglycanopathies and explore correlations with disease severity, duration and age at onset. Methods Retrospective, cross‐sectional, multicentric study enrolling patients with variants in one of the four sarcoglycan genes who underwent whole‐body ...
Laura Costa‐Comellas +39 more
wiley +1 more source
他臓器癌の現病歴あるいは既往歴が大腸腫瘍の危険因子となるか？大腸内視鏡検査を行った患者を対象にした解析結果 [PDF]
, 2005 We present an algorithm for computing one-dimensional stable and unstable manifolds of saddle periodic orbits in a, Poincaré section. The computation is set up as a, boundary value problem by restricting both end points of orbit segments to the section ...
England, J.P. +2 more
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Asymmetry in Skipping Enhances Viability Against Control Input Noise
Advanced Robotics Research, EarlyView.Quadruped animals use asymmetric galloping gaits at high speeds, yet the functional role of this asymmetry remains unclear. This study shows that left–right asymmetry in touchdown angles enhances robustness to control noise. Using a simple two‐legged locomotion model and viability theory, it demonstrates that asymmetric skipping substantially enlarges ...
Yuichi Ambe, Alvin So, Shinya Aoi
wiley +1 more source
Transition characteristics of the dynamic behavior of a vehicle wheel-rail vibro-impact system
Electronic Research Archive, 2023 A two-degree-of-freedom vehicle wheel-rail impact vibration system model is developed, and the equivalent impact stiffness and damping of the rail are fitted applying ABAQUS, taking into account the high and low irregularity generated by the welded ...
Yang Jin, Wanxiang Li, Hongbing Zhang
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Advanced Science, EarlyView.This work presents a dispersive full‐channel Jones matrix modulation strategy using single‐layer metasurface. By synergizing wavelength dispersion engineering with elliptical polarization bases, independent control of four Jones matrix channels is achieved across multiple wavelengths.
Hairong He +10 more
wiley +1 more source
Mathematical Biosciences and Engineering, 2023 This paper proposes and studies a comprehensive control model that considers fish population density and its current growth rate, providing new ideas for fishing strategies.
Huidong Cheng, Hui Xu, Jingli Fu
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