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Search Results: 1 - 10 of 54399 matches for " MA Wen "
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Automatic Event Trigger Word Extraction in Chinese Event  [PDF]
Long Tian, Wen Ma, Wen Zhou
Journal of Software Engineering and Applications (JSEA) , 2012, DOI: 10.4236/jsea.2012.512B040
Abstract: As a basic unit of knowledge representation and an important means for information organization, event has drawn growing number of people’s attention, the research of event identification and extraction in natural language processing field is an important research topic in information extraction area, the recognition and extraction of event trigger word plays a decisive role in event identification and extraction. In this paper, the authors make experiment in Chinese Event Corpus CEC, and present a method of extracting event trigger word automatically that combines extended trigger word table and machine learning. The experiment result shows that the F-score of extracting event trigger word. can reach 71.2% by using this method.
Advances in Industrialized Rice Production Research  [PDF]
Jing Ma, Rongchao Ma, Weixiong Wu, Xiaolong Lei, Wen Gou
Agricultural Sciences (AS) , 2015, DOI: 10.4236/as.2015.610115
Abstract: To widen the new way of thinking and to explore a new technology of rice planting, industrialized rice production is an advanced rice planting method. All processes of rice growth were finished in factory and they provided proper growth conditions (including light, CO2 concentration, temperature, moisture and minerals) on the base of different growth stages. This paper illustrated the theory of rice growth in factory, the processes of rice cultivation and fundamental structure of rice factory. It combined natural conditions with artificial environment to create an ideal rice growing environment. Rice cultivation’s cycle in factory was shortened and normally one day was divided into 2 - 3 special days. It could be continuous production and prevented rice planting from being affected by external conditions. Industrialized rice makes full use of energy on the basis of sunray and artificial supplies to increase the rice yield and it will start a revolution of rice planting and solve the problem of food safety.
Wen Ma,Hongyan Li
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536808043511
Abstract: In the title compound, C14H8Cl2N4O2, all atoms of the 6-chloropyrimidin-4-yloxy group and the C atoms at the para positions of the central benzene ring lie on a crystallographic mirror plane. The complete benzene ring is generated by the mirror plane and hence the dihedral angles between the pyrimidine rings and the benzene ring are exactly 90°. The crystal structure is stabilized by weak C—H...O and C—H...N hydrogen bonds.
The Application of Simulated Experimental Teaching in International Trade Course
Tao Ma,Wen Chen
International Education Studies , 2009, DOI: 10.5539/ies.v2n1p89
Abstract: International Trade Practice is a professional basic course for specialty of International Economy and Trade. As the core of International Trade Practice, it is extremely related to foreign affairs and needs much practical experience. This paper puts forward some suggestions on how to improve the performance of teaching in order to educate the outstanding graduates, which are urgently demanded by the foreign trade enterprises.
Discussion of time and space differentiation of three-yin and three-yang in Shanghan Lun
MA Wen-Hui
Zhong Xi Yi Jie He Xue Bao , 2005,
Abstract: The concept of "three-yin and three-yang" in Shanghan Lun (Treatise on Cold Pathogenic Diseases), a classic written by Zhang Zhongjing in Han Dynasty, has been always the focus of dispute in successive dynasties. The essence of "three-yin and three-yang" has not been fully revealed up till now. Through studying the six divisions of day and night, the six diseases, the combination of syndromes, the complicated diseases, the complete recovery time and the space division of "three-yin and three-yang", the authors draw a conclusion that the "three-yin and three-yang" in Shanghan Lun is a concept of time-sequence, which is associated with the location of disease in space. So it is suggested that the "six diseases" in Shanghan Lun is a categorization for exogenous febrile diseases, and this categorization reveals a sort of inner relationship between the emergence, development, transformation of the febrile diseases and the time.
On China’s Current Economic Policy: Active Fiscal Policy and Prudent Monetary Policy
Jing Ma,Wen Fang
Asian Social Science , 2011, DOI: 10.5539/ass.v7n8p164
Abstract: The purpose of this paper is to analyze the active fiscal policy and prudent monetary policy issued by CPC Central Committee Political Bureau in 2011 Economic Work Conference, and their effect on 2011’s overall economic situation. Firstly, we elaborate the categories and roles of macroeconomic policy. Secondly, we analyze the meanings of active fiscal policy and prudent monetary policy. Lastly, we describe their effect from the perspectives of price stability, improving people’s livelihood and promoting sci-tech progress respectively.
An application of the Casoratian technique to the 2D Toda lattice equation
Wen-Xiu Ma
Physics , 2008, DOI: 10.1142/S0217984908016492
Abstract: A general Casoratian formulation is proposed for the 2D Toda lattice equation, which involves coupled eigenfunction systems. Various Casoratian type solutions are generated, through solving the resulting linear conditions and using a Baecklund transformation.
Binary nonlinearization for the Dirac systems
Wen-Xiu Ma
Physics , 1995,
Abstract: A Bargmann symmetry constraint is proposed for the Lax pairs and the adjoint Lax pairs of the Dirac systems. It is shown that the spatial part of the nonlinearized Lax pairs and adjoint Lax pairs is a finite dimensional Liouville integrable Hamiltonian system and that under the control of the spatial part, the time parts of the nonlinearized Lax pairs and adjoint Lax pairs are interpreted as a hierarchy of commutative, finite dimensional Liouville integrable Hamiltonian systems whose Hamiltonian functions consist of a series of integrals of motion for the spatial part. Moreover an involutive representation of solutions of the Dirac systems exhibits their integrability by quadratures. This kind of symmetry constraint procedure involving the spectral problem and the adjoint spectral problem is referred to as a binary nonlinearization technique like a binary Darboux transformation.
A discrete variational identity on semi-direct sums of Lie algebras
Wen-Xiu Ma
Physics , 2007, DOI: 10.1088/1751-8113/40/50/010
Abstract: The discrete variational identity under general bilinear forms on semi-direct sums of Lie algebras is established. The constant $\gamma$ involved in the variational identity is determined through the corresponding solution to the stationary discrete zero curvature equation. An application of the resulting variational identity to a class of semi-direct sums of Lie algebras in the Volterra lattice case furnishes Hamiltonian structures for the associated integrable couplings of the Volterra lattice hierarchy.
Darboux Transformations for a Lax Integrable System in $2n$-Dimensions
Wen-Xiu Ma
Physics , 1996, DOI: 10.1007/s11005-997-3049-3
Abstract: A $2n$-dimensional Lax integrable system is proposed by a set of specific spectral problems. It contains Takasaki equations, the self-dual Yang-Mills equations and its integrable hierarchy as examples. An explicit formulation of Darboux transformations is established for this Lax integrable system. The Vandermonde and generalized Cauchy determinant formulas lead to a description for deriving explicit solutions and thus some rational and analytic solutions are obtained.
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