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IEEE Access, 2022 Modular multilevel converters (MMCs) are widely utilized in dc applications. With the development of MMCs, many applications require the MMCs to have additional functions and characteristics, such as dc fault clearing capability and low submodule ...
Zhengxuan Li +6 more
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Вестник КазНУ. Серия математика, механика, информатика, 2021 In this paper we consider the properties of the resolvent of a linear operator corresponding to a degenerate singular second-order differential equation with variable coefficients, considered in the Lebesgue space.
K. N. Ospanov, A. N. Yesbayev
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A compactness measure of sustainable building forms [PDF]
Royal Society Open Science, 2019 Global population growth and urbanization necessitate countless more buildings in this century, causing an unprecedented increase in energy consumption, greenhouse gas emissions, waste generation and resource use.
Bernardino D’Amico +1 more
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Impact of Nano-CaCO3 and PVA Fiber on Properties of Fresh and Hardened Geopolymer Mortar
Buildings, 2023 Geopolymer is a green substitute for Portland cement but has low tensile strength, high brittleness and easy cracking. Therefore, fibers and nanomaterials are used to strengthen and toughen geopolymer composites.
Zhe Zhang +3 more
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Compactness of Riemann–Liouville fractional integral operators
Electronic Journal of Qualitative Theory of Differential Equations, 2020 We obtain results on compactness of two linear Hammerstein integral operators with singularities, and apply the results to give new proof that Riemann–Liouville fractional integral operators of order $\alpha\in (0,1)$ map $L^{p}(0,1)$ to $C[0,1]$ and ...
Kunquan Lan
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Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2023 Based on the information found in the literature, which suggests that "more compact forms closer to squares are preferred in building designs in cold climate regions," this study investigates to what extent the existing theoretical knowledge of ...
Erdem Köymen, Özlem Kahraman
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Application of Hilbert instantaneous spectrum on improved bolt anchoring quality detection
Engineering Reports, 2022 The nondestructive testing technology for bolt anchoring quality based on the acoustic reflection method is developing rapidly. Hilbert transform instantaneous spectrum is frequently used.
Chen Li, Guozhong Gao, Yunsheng Wang
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Weighted critical exponents of Sobolev-type embeddings for radial functions
Advanced Nonlinear Studies, 2022 In this article, we prove the upper weighted critical exponents for some embeddings from weighted Sobolev spaces of radial functions into weighted Lebesgue spaces. We also consider the lower critical exponent for certain embedding.
Su Jiabao, Wang Cong
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Riemann–Liouville Fractional Sobolev and Bounded Variation Spaces
Axioms, 2022 We establish some properties of the bilateral Riemann–Liouville fractional derivative Ds. We set the notation, and study the associated Sobolev spaces of fractional order s, denoted by Ws,1(a,b), and the fractional bounded variation spaces of fractional ...
Antonio Leaci, Franco Tomarelli
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On Compactness and Sequential Compactness [PDF]
Proceedings of the American Mathematical Society, 1976 Let X X be a compact space of cardinality less than or equal to
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