Results 21 to 30 of about 38,779 (263)
An Efficient and Robust Hybrid SfM Method for Large-Scale Scenes
Remote Sensing, 2023 The structure from motion (SfM) method has achieved great success in 3D sparse reconstruction, but it still faces serious challenges in large-scale scenes.
Zhendong Liu +4 more
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Lions-type compactness and Rubik actions on the Heisenberg group [PDF]
, 2013 In this paper we prove a Lions-type compactness embedding result for symmetric unbounded domains of the Heisenberg group. The natural group action on the Heisenberg group TeX is provided by the unitary group U(n) × {1} and its appropriate subgroups ...
Kristály, Alexandru, Balogh, Zoltán M.
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Extrapolation of compactness for certain pseudodifferential operators
, 2023 A recently developed extrapolation of compactness on weighted Lebesgue spaces is revisited and a new application to a class of compact pseudodifferential operators is presented.Ministerio de Ciencia, Innovación y Universidades (España)Agencia Estatal de ...
Soria de Diego, Francisco Javier +6 more
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Cailiao gongcheng, 2018 The coating was treated by laser with different power. Microstructures of two kinds of coatings were examined by scanning electron microscopy(SEM). The phase of two kinds of coatings was detected by X-ray diffraction(XRD).
TANG Shi-guang +5 more
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Compactness bounds in general relativity [PDF]
, 2022 A foundational theorem due to Buchdahl states that, within General Relativity (GR), the maximum compactness $\mathcal{C}\equiv GM/(Rc^2)$ of a static, spherically symmetric, perfect fluid object of mass $M$ and radius $R$ is $\mathcal{C}=4/9$.
Pani, Paolo +7 more
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Mathematics, 2019 When finding an original proof to a known result describing expansive mappings on compact metric spaces as surjective isometries, we reveal that relaxing the condition of compactness to total boundedness preserves the isometry property and nearly that of
Marat V. Markin, Edward S. Sichel
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Astronomy & AstrophysicsContext. Ultra-compact massive galaxies (UCMGs) often exhibit elevated stellar-to-dynamical mass ratios when dynamical masses are estimated using standard virial prescriptions. This discrepancy has been interpreted as evidence for structural non-homology
Spiniello Chiara
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Local Squeezing Casting Influence on the Compactness of AlSi10Mg Alloy Castings [PDF]
Metalurgija, 2007 The aim of the local squeezing casting process examination has been to eliminate the hot spot i.e. the place of potential formation of shrinkage porosity. The influence of variation of process parameters on the density i.e.
Brodarac, Z. +3 more
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Excess paste method to formulate a self-compacting concrete
Journal of Building Materials and Structures, 2014 On the basis of the principle that a concrete is composed of a liquid phase (paste) and a solid phase (aggregates with fixed gravel/sand ratio), the concrete self-compacting properties come necessarily from those of the paste.
Abdelkader Mebrouki +3 more
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Dual Toeplitz Operators on Bounded Symmetric Domains
MathematicsWe give some characterizations of dual Toeplitz operators acting on the orthogonal complement of the Bergman space over bounded symmetric domains. Our main result characterizes those finite sums of products of Toeplitz operators that are themselves dual ...
Jianxiang Dong
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