Showing 41 - 60 results of 806 for search '"curvature"', query time: 0.06s Refine Results
  1. 41

    Compact Spacelike Hypersurfaces with Constant Mean Curvature in the Antide Sitter Space by Henrique F. de Lima, Joseilson R. de Lima

    Published 2009-01-01
    “…We obtain a height estimate concerning to a compact spacelike hypersurface Σn immersed with constant mean curvature H in the anti-de Sitter space ℍ1n+1, when its boundary ∂Σ is contained into an umbilical spacelike hypersurface of this spacetime which is isometric to the hyperbolic space ℍn. …”
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  2. 42

    Signal denoising based on the Schrödinger operator's eigenspectrum and a curvature constraint by P. Li, T.M. Laleg‐Kirati

    Published 2021-05-01
    “…Abstract The authors propose an adaptive, general and data‐driven curvature penalty for signal denoising via the Schrödinge operator. …”
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    Lightlike Submanifolds of a Semi-Riemannian Manifold of Quasi-Constant Curvature by D. H. Jin, J. W. Lee

    Published 2012-01-01
    “…We study the geometry of lightlike submanifolds (𝑀,𝑔,𝑆(𝑇𝑀),𝑆(𝑇𝑀⟂)) of a semi-Riemannian manifold (𝑀,̃𝑔) of quasiconstant curvature subject to the following conditions: (1) the curvature vector field ζ of 𝑀 is tangent to 𝑀, (2) the screen distribution 𝑆(𝑇𝑀) of 𝑀 is totally geodesic in 𝑀, and (3) the coscreen distribution 𝑆(𝑇𝑀⟂) of 𝑀 is a conformal Killing distribution.…”
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    Spacelike hypersurfaces in de Sitter space with constant higher-order mean curvature by Kairen Cai, Huiqun Xu

    Published 2006-01-01
    “…It is shown that a compact connected hypersurface with positive constant higher-order mean curvature Hr for some fixed r , 1≤r≤n, immersed in the de Sitter space S1n+1 must be a sphere.…”
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  7. 47

    Existence of Solutions for the Discrete Dirichlet Problem Involving p-Mean Curvature Operator by Jianxia Wang, Zhan Zhou

    Published 2020-01-01
    “…This work is to discuss the Dirichlet boundary value problem of the difference equation with p -mean curvature operator. Under some determinate growth conditions on the nonlinear term, the existence of one solution or two nontrivial solutions is obtained via variational methods and some analysis techniques. …”
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  8. 48

    An Efficient Curvature-Based Synthesis Methodology for Rotationally Symmetric Shaped Reflector Antennas by Manushanker Balasubramanian, Douglas H. Werner

    Published 2025-01-01
    “…A previously proposed B-spline curvature-based synthesis technique is extended and applied to the design of rotationally symmetric reflector antennas with shaped beam patterns. …”
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  9. 49

    Optimization of the Curvature Radius Coefficient of RV Reducer Main Bearing based on ADAMS by Zhu Bingfeng, Lei Xiaochun

    Published 2015-01-01
    “…Firstly,the contact stress and elastic deformation of bearing with different curvature radius coefficient are calculated by using the MATLAB. …”
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    Quasinormal modes of regular black holes with sub-Planckian curvature and Minkowskian core by Chen Tang, Yi Ling, Qing-Quan Jiang, Guo-Ping Li

    Published 2024-12-01
    “…Abstract We investigate the perturbation of the scalar field as well as the electromagnetic field over a sort of regular black holes which are characterized by the sub-Planckian curvature and the Minkowskian core. Specifically, we compute the quasinormal modes (QNMs) by employing the pseudo-spectral method. …”
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  12. 52

    Dynamics Analysis of Gears with Constant Relative Curvature Considering Time-varying Effect by Liu Lei, Ni Jiale, Jiang Wuhong

    Published 2022-11-01
    Subjects: “…Gears with constant relative curvature…”
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  13. 53

    Identification of Damage in a Beam Structure by Using Mode Shape Curvature Squares by S. Rucevskis, M. Wesolowski

    Published 2010-01-01
    “…From the mode shapes, mode shape curvatures are obtained by using a central difference approximation. …”
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  14. 54

    Some Curvature Conditions on a Para-Sasakian Manifold with Canonical Paracontact Connection by Bilal Eftal Acet, Erol Kılıç, Selcen Yüksel Perktaş

    Published 2012-01-01
    “…We also investigate some properties of curvature tensor, conformal curvature tensor, W2-curvature tensor, concircular curvature tensor, projective curvature tensor, and pseudo-projective curvature tensor with respect to canonical paracontact connection on a para-Sasakian manifold. …”
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  15. 55

    Geometrically Nonlinear Analysis of Functionally Graded Timoshenko Curved Beams with Variable Curvatures by Ze-Qing Wan, Shi-Rong Li, Hong-Wei Ma

    Published 2019-01-01
    “…In this paper, geometrically nonlinear analysis of functionally graded curved beams with variable curvatures based on Timoshenko beam theory is presented. …”
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    Simplified Data-Driven Model for the Moment Curvature of T-Shaped RC Shear Walls by Bin Wang, Wenzhe Cai, Qingxuan Shi

    Published 2019-01-01
    “…Sectional deformation quantities, such as curvature and ductility, are of prime significance in the displacement-based seismic design and performance evaluation of structural members. …”
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    Some Properties of Curvature Tensors and Foliations of Locally Conformal Almost Kähler Manifolds by Ntokozo Sibonelo Khuzwayo, Fortuné Massamba

    Published 2021-01-01
    “…We show that a locally conformal almost Kähler manifold admits a canonical foliation whose leaves are hypersurfaces with the mean curvature vector field proportional to the Lee vector field. …”
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