Results 21 to 30 of about 11,534,535 (349)
The parameter space of galaxy formation [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 Semi-analytic models are a powerful tool for studying the formation of galaxies. However, these models inevitably involve a significant number of poorly constrained parameters that must be adjusted to provide an acceptable match to the observed universe. In this paper, we set out to quantify the degree to which observational data-sets can constrain the
Bower, R. G. +7 more
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Julia Sets in Parameter Spaces [PDF]
Communications in Mathematical Physics, 2001 The paper is devoted to study the one parameter family of cubic polynomials \[ g_b(z)= \lambda z+ bz^2+z^3, \quad b\in \mathbb{C},\tag{1} \] where \(\lambda= e^{2\pi i\theta}\) is a fixed complex number of modulus 1. The authors show that the bifurcation locus of (1) contains quasi-conformal copies of the quadratic Julia set \(J(\lambda z+z^2)\).
Buff, X., Henriksen, C.
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Remote Sensing, 2020 Infrared (IR) radiometers from geostationary (GEO) satellites have an advantage over low-earth orbiting (LEO) satellites as they provide continuous observations to monitor the diurnal variations in the sea surface temperature (SST), typically better than
Rishi Kumar Gangwar +1 more
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Parameter Spaces for Algebraic Equivalence [PDF]
International Mathematics Research Notices, 2017 Abstract A cycle is algebraically trivial if it can be exhibited as the difference of two fibers in a family of cycles parameterized by a smooth integral scheme. Over an algebraically closed field, it is a result of Weil that it suffices to consider families of cycles parameterized by curves, or by abelian varieties.
Achter, Jeffrey D. +2 more
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On Bifurcations Along the Spiral Organization of the Periodicity in a Hopfield Neural Network
Communications in Advanced Mathematical Sciences, 2022 In this work we report numerical results involving a certain Hopfield-type three-neurons network, with the hyperbolic tangent as the activation function.
Angela Da Silva, Paulo Rech
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Index Matrix-Based Modeling and Simulation of Buck Converter
Mathematics, 2023 The approach described in this paper handles the parameters and characteristics (analog and discrete ones) of a Buck DC-DC converter (in its power and control parts) in a common manner.
Nikolay Hinov +2 more
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Stable polyhedra in parameter space [PDF]
Automatica, 2003 This nicely written paper focuses on robust design of low order controllers for linear dynamical systems described by polynomial equations. The paper is motivated by a recent striking result by Ho, Datta and Bhattacharyya stating that the stability region of a PID controller in the controller parameter space is a convex polygon as soon as the ...
Ackermann, J., Kaesbauer, D.
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Choosing the Best Members of the Optimal Eighth-Order Petković’s Family by Its Fractal Behavior
Fractal and Fractional, 2022 In this paper, by applying Petković’s iterative method to the Möbius conjugate mapping of a quadratic polynomial function, we attain an optimal eighth-order rational operator with a single parameter r and research the stability of this method by using ...
Xiaofeng Wang, Wenshuo Li
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InSituNet: Deep Image Synthesis for Parameter Space Exploration of Ensemble Simulations [PDF]
IEEE Transactions on Visualization and Computer Graphics, 2019 We propose InSituNet, a deep learning based surrogate model to support parameter space exploration for ensemble simulations that are visualized in situ.
Wenbin He +7 more
semanticscholar +1 more source
Positivity constraints on aQGC: carving out the physical parameter space [PDF]
Journal of High Energy Physics, 2019 A bstractSearching for deviations in quartic gauge boson couplings (QGCs) is one of the main goals of the electroweak program at the LHC. We consider positivity bounds adapted to the Standard Model, and show that a set of positivity constraints on 18 ...
Qi Bi, Cen Zhang, Shuang-Yong Zhou
semanticscholar +1 more source