Results 11 to 20 of about 8,079,144 (302)
Optimal E-Field Vector Combination for a Highly Focused Antenna-Array [PDF]
, 2014 A near-field highly focused circular phased-array antenna for 5.8-GHz radio frequency identification (RFID) applications is presented. The electric field (E-field) at the focus is enhanced by a constructive vector combination in a three-dimensional (3-D)
Perallos, Asier +5 more
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Current Research in Food Science, 2023 Consumption of aflatoxin-contaminated food can cause severe illness when consumed by humans or livestock. Because the mycotoxin frequently occurs in cereal grains and other agricultural crops, it is crucial to develop portable devices that can be used ...
Yong-Kyoung Kim +9 more
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RSVM: Reduced Support Vector Machines [PDF]
, 2001 An algorithm is proposed which generates a nonlinear kernel-based separating surface that requires as little as 1% of a large dataset for its explicit evaluation.
Olvi L. Mangasarian +3 more
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An Innovative Approach to Estimate Chloride Diffusion Coefficient in Submerged Concrete Structures Using Soft Computing [PDF]
Journal of Rehabilitation in Civil Engineering, 2023 Corrosion is one of the most important and common factors in the destruction of structures. Among all kinds of structures, corrosion of submerged structures is of great importance and prevalence due to the impossibility of direct visibility, high ...
Seyyed Ali Habibi +2 more
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Uniqueness of limit cycles for quadratic vector fields
Discrete and Continuous Dynamical Systems, 2019 This article deals with the study of the number of limit cycles surrounding a critical point of a quadratic planar vector field, which, in normal form, can be written as $x'= a_1 x-y-a_3x^2+(2 a_2+a_5)xy + a_6 y^2$, $y'= x+a_1 y + a_2x^2+(2 a_3+a_4)xy -a_2y^2$.
Bravo, José Luis +3 more
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A Correction to the Paper “Quadratic Hamiltonian Vector Fields”
Journal of Differential Equations, 1996 The authors present a corrected version of Theorem 5.2 from their paper [ibid. 107, No. 1, 80-95 (1994; Zbl 0791.34048)].
Artés, Joan C., Llibre, Jaume
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Stability in quadratic torsion theories
European Physical Journal C: Particles and Fields, 2017 We revisit the definition and some of the characteristics of quadratic theories of gravity with torsion. We start from a Lagrangian density quadratic in the curvature and torsion tensors.
Teodor Borislavov Vasilev +3 more
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Black hole solutions in the quadratic Weyl conformal geometric theory of gravity
European Physical Journal C: Particles and Fields, 2022 We consider numerical black hole solutions in the Weyl conformal geometry and its associated conformally invariant Weyl quadratic gravity. In this model, Einstein gravity (with a positive cosmological constant) is recovered in the spontaneously broken ...
Jin-Zhao Yang +2 more
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Modeling of the Temperature Regimes in a Layered Bimetallic Plate under Short-Term Induction Heating
Energies, 2023 A mathematical model for determining the temperature field of a bimetallic plate with plane-parallel boundaries during short-term induction heating by a non-stationary electromagnetic field is proposed. Initial boundary value problems for determining the
Roman Musii +4 more
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Darboux Integrability and Reversible Quadratic Vector Fields
Rocky Mountain Journal of Mathematics, 2005 The authors study the Darboux theory of integrability for reversible polynomial vector fields in \({\mathbb R}^n\). In particular, they define the concept of \(\varphi\)-reversible vector fields for a given involution \(\varphi\) and show that if \(X\) is a \(\varphi\)-reversible quadratic vector field in \({\mathbb R}^2\) such that the set of fixed ...
Llibre, Jaume, Medrado, João Carlos
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