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Search Results: 1 - 10 of 127368 matches for " Hongxia Li "
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Nonlinear Jordan Triple Derivations of Triangular Algebras  [PDF]
Hongxia Li
Advances in Linear Algebra & Matrix Theory (ALAMT) , 2014, DOI: 10.4236/alamt.2014.44018
Abstract:

In this paper, it is proved that every nonlinear Jordan triple derivation on triangular algebra is an additive derivation.

One Explicit Scheme for the Linear Heat Conduction Equation and the Numerical Approximation
Hongxia Li
Journal of Computers , 2012, DOI: 10.4304/jcp.7.3.743-748
Abstract: In this paper, one explicit scheme for the linear he at conduction equation in one space dimension is conside re d. We will analysis the truncation error of the method and w ill use the super norm, Fourier series to analysis the stability of the scheme; at last the numerical experiments of initial va lue problem will be presented.
The numerical approximation of the linear advection equation in one space dimension
Hongxia Li
Journal of Computers , 2012, DOI: 10.4304/jcp.7.1.272-277
Abstract: In this paper, we will consider the linear advection equation in one space dimension. Numerical analysis the efficiency of the minmod scheme, MC scheme, Valeer scheme the super bee scheme, Beam warming scheme, Fromm scheme. Some numerical experi ments are presented to show the efficiency of the schemes.
The Numerical Analysis of the Schemes of 1-Order Ordinary Differencial Equations
Li Hongxia
Research Journal of Applied Sciences, Engineering and Technology , 2012,
Abstract: In this study, we will consider the numerical methods of 1-order differential equations, such as forward euler scheme, predict-correct scheme and the 4-order Runge-kutta scheme. The truncation errors of these schemes are analyzed theoretically and numerically in there. The error tables and the numerical experiments are also presented at the last.
The Lax-Wendroff Theorem of Entropy Dissipation Method for Scalar Conservation Laws in One Space Dimension
Hongxia Li
Journal of Mathematics Research , 2009, DOI: 10.5539/jmr.v1n1p98
Abstract: In this paper, we present the Lax-Wendroff theorem of entropy dissipation method for scalar conservation laws in one space dimension. Suppose that ul(x, t) the numerical solution computed by the entropy dissipation method converges to a function u(x, t) as l ? ?,then u(x, t) is a weak solution that satisfying the entropy condition of the conservation law.
Multiple Positive Solutions for Singular Periodic Boundary Value Problems of Impulsive Differential Equations in Banach Spaces
Hongxia Fan,Yongxiang Li
Abstract and Applied Analysis , 2011, DOI: 10.1155/2011/493639
Abstract: By means of the fixed point theory of strict set contraction operators, we establish a new existence theorem on multiple positive solutions to a singular boundary value problem for second-order impulsive differential equations with periodic boundary conditions in a Banach space. Moreover, an application is given to illustrate the main result.
ACTA MATHEMATICA UNIVERSITATIS COMENIANAE
Ximin Liu and Hongxia Li
ACTA MATHEMATICA UNIVERSITATIS COMENIANAE , 2007,
Abstract: . Let X be a smooth, closed, connected spin 4-manifold with b1(X) = 0 and non-positive signature s(X). In this paper we use Seiberg-Witten theory to prove that if X admits an odd type symmetric group S3 action preserving the spin structure, then b2+(X) 3 |s(X)|/8 +3 under some non-degeneracy conditions. We also obtain some information about Ind~S3D, where ~S3 is the extension of S3 by Z2.
On Symmetric Group S3 Actions on Spin 4-manifolds
Ximin Liu,Hongxia Li
ACTA MATHEMATICA UNIVERSITATIS COMENIANAE , 2007,
Abstract: Let X be a smooth, closed, connected spin 4-manifold withb1(X) = 0 and non-positive signature s(X). In this paper we use Seiberg-Witten theory to prove that if X admits an odd type symmetric group S3 action preserving the spin structure, then b2+(X) 3 |s(X)|/8 +3 under some non-degeneracy conditions. We also obtain some information aboutInd~S3D, where ~S3 is the extension of S3 by Z2.
Research on the Influence of Investor Concern on the Market Performance of Coal Listed Companies  [PDF]
Hongxia Li, Xu Yang
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105497
Abstract:
Since the beginning of the 21st century, the stock market has experienced many outbreaks of bull market, and stocks have gradually entered the public’s field of vision from a small investment field. In the era of big data, how can investors make correct information from a large amount of in-formation? The choice becomes the most critical issue. This paper selects 17 listed companies in the coal industry in 2018 as the research object, and uses Baidu Index as the research index of investor attention, empirically testing the impact of investment attention on the market performance of coal listed companies. The study found that: first, the current investor attention significantly affected the stock returns and liquidity of the current coal listed companies; second, the investor attention of the lag period and the current stock returns of coal listed companies were significantly negative. And the investor attention in the lag period is still significantly positively correlated with the stock liquidity of the current coal listed companies.
CORROSION AND SCALE INHIBITION PERFORMANCE OF ATMP COMPOUND
ATMP缓蚀阻垢性能

LI Hongxia,
李红霞

腐蚀科学与防护技术 , 2000,
Abstract: The ammonia chloride, methanal, phosphorus trichloride were used to compose ATMP by one\|step method. Active component of ATMP gotten with the technology may reach 66.6%. The corrosion and scale inhibition performance of ATMP and ATMP compound were compared. The result showed that the corrosion and scale inhibition of ATMP compound were enhanced evidently.
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