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Journal of Applied Mathematics, 2022 Computer science and technology under the background of big data are closely related to the development of modern agriculture. The application of information processing technology in aquaculture will promote the scientific development of aquaculture. The
Yuan Jiang, Fei Yan
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Grouting Treatment of Water and Mud Inrush in Fully Weathered Granite Tunnel: A Case Study
Geofluids, Volume 2020, Issue 1, 2020., 2020 When mountain tunnel passes through completely weathered granite strata, water and mud inrush is easy to occur, causing casualties and economic losses. Grouting is a common and effective treatment method for water and mud inrush disaster. The current existing researches focus on theoretical analysis, numerical simulation, and laboratory test, and the ...
Jiandong Niu +8 more
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The Nonlinear Relationship between Investor Sentiment, Stock Return, and Volatility
Discrete Dynamics in Nature and Society, 2020 Based on the DSSW model, we analyze the nonlinear impact mechanism of investor sentiment on stock return and volatility by adjusting its hypothesis in Chinese stock market.
Gang He, Shuzhen Zhu, Haifeng Gu
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AUTOMORPHISMS OF DISTANCE-REGULAR GRAPH WITH INTERSECTION ARRAY {39; 36; 4; 1; 1; 36}
Ural Mathematical Journal, 2018 Makhnev and Nirova have found intersection arrays of distance-regular graphs with no more than \(4096\) vertices, in which \(\lambda=2\) and \(\mu=1\). They proposed the program of investigation of distance-regular graphs with \(\lambda=2\) and \(\mu=1\)
Konstantin S. Efimov +1 more
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Conditions to Flatten the Curvature Tensor Associated with a Symmetric Affine Connection
Journal of Mathematics, 2022 In this study, we present a problem that consists in flattening the curvature associated with an affine connection on ℝ2. This problem involves distributions and symmetric affine connections defined on a differential manifold M.
Esperanza Cuellar +2 more
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Gradient Ricci–Yamabe Soliton on Twisted Product Manifolds
Journal of Mathematics, 2022 In this paper, we study the twisted product manifolds with gradient Ricci–Yamabe solitons. Then, we classify and characterize the warped product and twisted product spaces with gradient Ricci–Yamabe solitons.
Byung Hak Kim +3 more
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Convergence of a formal power series and Gelfond-Leont’ev derivatives [PDF]
Математичні Студії, 2011 Given a formal power series, we establish conditions on the formal power seriess under which the series represents a function analytic in the disk {z:|z|≤R},R∈(0,+∞]. We also give a survey of well-know results for the case R=+∞.
S. I. Fedynyak, M. M. Sheremeta
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Asymptotic Stability of a Class of Impulsive Delay Differential Equations
Journal of Applied Mathematics, 2012 This paper is concerned with a class of linear impulsive delay differential equations. Asymptotic stability of analytic solutions of this kind of equations is studied by the property of delay differential equations without impulsive perturbations.
G. L. Zhang, M. H. Song, M. Z. Liu
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Discrete Dynamics in Nature and Society, 2021 Water retailer managed inventory is a classical and inevitable inventory management mode in present economic society. Stochastic models can more clearly explain demand uncertainty and are closely related to water supply chains.
Wenfang Yu, Guisheng Hou, Baogui Xin
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Almost antiproximinal sets in L_1 [PDF]
Математичні Студії, 2011 We introduce a notion of almost antiproximinality of sets in the space L_1 which is a weakening of the notion of antiproximinality. Also we investigate properties of almost antiproximinal sets and establish a method of construction of almost ...
V. A. Kholomenyuk, V. V. Mykhaylyuk
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