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Search Results: 1 - 10 of 23034 matches for " LIANG Liang "
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The Role of Space Dimension on the Blow up for a Reaction-Diffusion Equation  [PDF]
Zhilei Liang
Applied Mathematics (AM) , 2011, DOI: 10.4236/am.2011.25076
Abstract: This paper deals with the doubly degenerate reaction-di?usion equation where , , and B(0,1) denotes a unit ball in RN with the center in origin. We prove that the blow up phenomenon can be restrained if the space dimension N is taken su?ciently large. Moreover, the critical condition guaranteeing the absence (or occurrence) of the blow up is achieved.
Reconfigurable Logistics Information System Based on Soft Components Technology  [PDF]
Feng Liang
Journal of Service Science and Management (JSSM) , 2008, DOI: 10.4236/jssm.2008.12016
Abstract: Logistics information system should be reconfigurable, open and extensible to support the total supply chain. Soft com-ponent technology is introduced to design and build the logistics information system oriented to the business demand of kinds of supply chains. When the supply chain is changed, logistics information system organizes all kinds of required logistics resources, by recalling predefined soft components to dynamically configure logistics information system, which can ensure quick respond to the changes of supply chain demand and support dynamic reconfiguration of the logistics information system. In this paper, a method of reconfiguration of logistics information system by using soft component technology is proposed. The key problems to the subject domain are investigated and an illustrative case study is presented.
Empirical Study on the Performance of Initial Public Offerings in China  [PDF]
Peng Liang
Journal of Service Science and Management (JSSM) , 2008, DOI: 10.4236/jssm.2008.12014
Abstract: We study the long-run performance of 166 IPOs listed on China’s Shanghai Stock Exchanges from 2000 to 2002. We find that the average market-adjusted cumulative return and buy-and-hold return over the three years after listing are -32.02% and -20.88%, which are both significantly negative. What’s more, as an additional robustness check, we cal-culate wealth relatives. One year after listing, WR less than 1 and we obtain a three-year wealth relative of 0.6826, consistent with the CAR and BHAR estimates. We then use a cross-sectional analysis to explain the long-run underper-formance of Chinese IPOs. The results show that the aftermarket performance is positive after listing (6 months) but thereafter returns decline. Buying A-share IPOs immediately after listing and holding the investment for three years results in negative returns and wealth relatives less than one.
Spin and Quantization of Gravitational Space  [PDF]
Bin Liang
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.311218
Abstract: According to the formula of translational motion of vector along an infinitesimal closed curve in gravitational space, this article shows that the space and time both are quantized; the called center singularity of Schwarzschild metric does not exist physically, and Einstein’s theory of gravity is compatible with the traditional quantum theory in essence; the quantized gravitational space is just the spin network which consists of infinite quantized loops linking and intersecting each other, and that whether the particle is in spin eigenstate depends on the translational track of its spin vector in gravitational space.
Comments on “Average Life Prediction Based on Incomplete Data”  [PDF]
Tachen Liang
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.412232

We comment on the correctness of the article “Average life prediction based on incomplete data” by [1] (Applied Mathematics, Vol. 2, pp. 93-105).

Electromagnetic Study of MW-Class HTS Wind Turbine Generators  [PDF]
Yongchun Liang
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B072
Abstract: High temperature superconductor (HTS) technology enables a significant reduction in the size and weight of MW-class generators for direct-drive wind turbine systems and reduce the cost of clean energy relative to conventional copper an permanent-magnet-based generators and gearbox. Using MAXWELL, we studied MW class superconducting synchronous machines. By comparison the weight, we concluded that HTS wind turbine with rotor iron is the heaviest and HTS wind turbine without rotor iron and stator teeth is the lightest. By comparison the flux density, HTS wind turbine without rotor iron is the least and HTS wind turbine without rotor iron and stator teeth is the largest. By comparison the cost, HTS wind turbine with rotor iron is the highest and the other two is almost the same. HTS wind turbine without rotor iron and stator teeth is the best type.
Upper Bound Estimation of Fractal Dimensions of Fractional Integral of Continuous Functions  [PDF]
Yongshun Liang
Advances in Pure Mathematics (APM) , 2015, DOI: 10.4236/apm.2015.51003
Abstract: Fractional integral of continuous functions has been discussed in the present paper. If the order of Riemann-Liouville fractional integral is v, fractal dimension of Riemann-Liouville fractional integral of any continuous functions on a closed interval is no more than 2 - v.
On Quarks and Gluons  [PDF]
Bin Liang
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.67102
Abstract: This article gives the potential energy function of quark in the gluon field, derives the wave function of quark in stationary state and the quark confinement and asymptotic freedom, shows that a quark is composed of two different color gluons, expounds the formation mechanism of the quark confinement and asymptotic freedom and the physical substance of “colors” of quark, and discusses the stability of hadrons in the end.
Stock Price Information Content, Idiosyncratic Volatility and Expected Return  [PDF]
Meimei Liang
Journal of Mathematical Finance (JMF) , 2015, DOI: 10.4236/jmf.2015.54034

How idiosyncratic risks are priced in capital asset is always concerned in the financial sector. This paper theoretically analyzes the impact of idiosyncratic volatility on the expected return from the perspective of stock price’s information content, and use Chinese A-share market data, from 1994 to 2013, to do the empirical test. It finds that, if other conditions remain unchanged, when the degree of stock price information content is low, idiosyncratic volatility and expected return are negatively correlated; when the degree of stock price information content is rich, idiosyncratic volatility and expected return are positively correlated. After taking the impact of different regression methods and time spans into consideration, the conclusions are still valid, which indicates that the conclusions are robust. The reason for the above phenomenon is that idiosyncratic volatility is mainly driven by noise or information, which has different impacts on expected return.

New Ideas of the Reform in the View of Globalization: Shanghai Pilot Free Trade Zone and One Belt and One Road  [PDF]
Weien Liang
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.312016
Abstract: The appearance of Shanghai Free Trade Zone and One Belt and One Road strategy represents the continuous development of Chinese economic system reform. However, there are few essays about Shanghai Free Trade Zone and One Belt and One Road strategy and their relations. In terms of the successful experiences of the reform of Shanghai Free Trade Zone, this paper has manifested the strategic relationship of Shanghai Free Trade Zone and One Belt and One Road strategy. Actually, Shanghai Free Trade Zone and One Belt and One Road strategy is a very good combination strategy in development. And also in this paper, readers could find a new angle in understanding the developing Chinese economic system reform.
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