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    Reference crust-mantle density contrast beneath Antarctica based on the Vening Meinesz-Moritz isostatic inverse problem and CRUST2.0 seismic model by Robert Tenzer, Mohammad Bagherbandi

    Published 2013-01-01
    “…We estimate the crust-mantle (Moho) density contrast beneath Antarctica based on solving the inverse problem of isostasy and using the constraining information from the seismic global crustal model (CRUST2.0). …”
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    The Method of Zero Tangential Strengths in the Problem of Charge Distribution over the Surfaces of Two Interacting Tori by Nikita Dmitriev, Vadim Sakharov, Alexey Tikhonov

    Published 2025-10-01
    “…An electrostatic charge can be applied to each of the tori. The problem is to find the density of charge distribution over the surfaces of the tori, taking into account the Coulomb interaction between the surfaces. …”
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    THE PROBLEM OF EFFECTIVE PRESSURE ON CONSOLIDATION OF ZIRCONIA NANOPOWDERS AND ITS SOLUTION WITH SPARK-PLASMA SINTERING by Edvin GEVORKYAN, Yury GUTSALENKO, Vladimir CHISHKALA, Olga MELNIK, Maxim KISLITSA

    Published 2016-05-01
    “…The problem of physical and mathematical prediction of rational pressure during sparkplasma sintering of zirconia nanopowder is being considered. …”
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    Nonasymptotic Densities for Shape Reconstruction by Sharif Ibrahim, Kevin Sonnanburg, Thomas J. Asaki, Kevin R. Vixie

    Published 2014-01-01
    “…In this work, we study the problem of reconstructing shapes from simple nonasymptotic densities measured only along shape boundaries. …”
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    Information criterion for approximation of unnormalized densities. by John Y Choe, Yen-Chi Chen, Nick Terry

    Published 2025-01-01
    “…This paper considers the problem of approximating an unknown density when it can be evaluated up to a normalizing constant at a finite number of points. …”
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    Investigation of the bone density in multiple sclerosis by O. S. Dranichnikova, V. D. Zavadovskaya, V. M. Alifirova

    Published 2008-06-01
    “…A number of investigations revealed a problem of osteopenic syndrome in patients with multiple sclerosis but there is no common opinion concerning factors which lead to its development. …”
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    Manifold learning based on kernel density estimation by A.P. Kuleshov, A.V. Bernstein, Yu.A. Yanovich

    Published 2018-06-01
    “…The problem of unknown high-dimensional density estimation has been considered. …”
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  15. 35

    Quantum dynamics as a pseudo-density matrix by James Fullwood

    Published 2025-04-01
    “…We also show how to explicitly extract quantum dynamics from a given pseudo-density matrix, thus solving an open problem posed in the literature.…”
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    Capacity Density Assessment of Satellite Constellation Network by Xian MENG, Dali QIN, Yu WANG, Chuili KONG, Hejia LUO, Jun WANG

    Published 2023-09-01
    “…The traditional analytical method greatly underestimates the throughput capability of the system in low beam density scenario, and cannot reveal the capacity saturation phenomenon in high beam density scenario.To overcome the preceding problems, a new system simulation method was proposed to accurately evaluated the capacity density indicator of satellite constellation network and integrated satellite and terrestrial network, Based on this method, first, the capacity density of different longitude and latitude regions of the earth was evaluated.It could be observed that the capacity density of the same region varies greatly with the movement of the satellite, and the maximum capacity density was twice the minimum.Then, areas with higher visibility usually had higher capacity density.In high-frequency scenarios, the impact of atmospheric attenuation on capacity density could not be ignored.Finally, for the integrated satellite and terrestrial network, the evaluation results showed that the capacity density of cellular coverage and satellite coverage could differ by four orders of magnitude.In order to improved the capacity density of satellite constellation network, two technical paths were attempted: increasing the maximum number of illuminated beams and increasing the satellite scale.The results showed that the performance was better when the constellation scale was increased when the total beams of the constellation were the same.However, the two ways to increase the total number of beams in a constellation had an upper bound on capacity, and the marginal effect decreased significantly.Finally, a scheme to increase the gain of satellite antenna was proposed.The simulation results showed that the proposed scheme could significantly increase the capacity density of constellation.…”
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    Influence of tree density and terrain slope on ground point density in LiDAR point clouds: a simulation-based study with Helios++ by J. J. González-Quiñones, L. Polidori, F. J. Ariza-López, M. A. Ureña-Cámara, J. F. Reinoso-Gordo

    Published 2024-11-01
    “…Currently, LiDAR is a technique that could help solve this problem. The best solution to this problem requires many samples over hostile environment and LiDAR flight simulation can be a good option to approximate the problem. …”
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    Determination of a power density by an entropy regularization method by Olivier Prot, Maïtine Bergounioux, Jean Gabriel Trotignon

    Published 2005-01-01
    “…The determination of directional power density distribution of an electromagnetic wave from the electromagnetic field measurement can be expressed as an ill-posed inverse problem. …”
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