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Search Results: 1 - 10 of 169815 matches for " Yang Li "
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Numerical simulation and analysis for indoor air quality in different ventilation  [PDF]
Yang Li
Health (Health) , 2012, DOI: 10.4236/health.2012.412197
Abstract: Indoor air environment includes indoor thermal environment and air quality, and a reasonable ventilation provides guarantee for a good indoor environment. A numerical study of the indoor environment in different ventilation is presented in this paper. The External Energy Saving Lab of the WenYuan Building was selected for this purpose, and its indoor air quality and thermal performance in the typical summer climate were simulated. For the numerical simulation, the techniques of Fluent Air-pak was adopted to establish the physical and numerical model of lab. A attention is given to the velocity field and the distribution of pollutant concentration, followed by a discussion of two ventilation modes (displacement ventilation and up-in and up-out ventilation). By comparison, it is found that the Displacement ventilation in improving indoor air quality is obviously superior to the traditional up-in and up-out ventilation.
Application of Trial Equation Method for Solving the Benjamin Ono Equation  [PDF]
Yang Li
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.23005

In the article, the nonlinear equation is reduced to an ordinary differential equation under the travelling wave transformation. Using trial equation method, the ODE is reduced to the elementary integral form. In the end, complete discrimination system for polynomial is used to solve the corresponding integrals and obtain the classification of all single travelling wave solutions to the equation.

Application of Trial Equation Method for Solving the Getmanou Equation  [PDF]
Li Yang
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.510139

Under the travelling wave transformation, some nonlinear partial differential equations such as the Getmanou equation are transformed to ordinary differential equation. Then using trial equation method and combing complete discrimination system for polynomial, the classifications of all single traveling wave solution to this equation are obtained.

Application of Classification of Traveling Wave Solutions to the Zakhrov-Kuznetsov-Benjamin-Bona-Mahony Equation  [PDF]
Li Yang
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.510135

In order to get the traveling wave solutions of the Zakharov-Kuznetsov-Benjamin-Bona-Mahony (ZK-BBM) equation, it is reduced to an ordinary differential equation (ODE) under the travelling wave transformation first. Then complete discrimination system for polynomial is applied to the ZK-BBM equation. The traveling wave solutions of the equation can be obtained.

Trial Equation Method for Solving the Improved Boussinesq Equation  [PDF]
Yang Li
Advances in Pure Mathematics (APM) , 2014, DOI: 10.4236/apm.2014.42007

Trial equation method is a powerful tool for obtaining exact solutions of nonlinear differential equations. In this paper, the improved Boussinesq is reduced to an ordinary differential equation under the travelling wave transformation. Trial equation method and the theory of complete discrimination system for polynomial are used to establish exact solutions of the improved Boussinesq equation.

Classification of All Single Traveling Wave Solutions to (3 + 1)-Dimensional Breaking Soliton Equation  [PDF]
Yang Li
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.24006

In order to get the exact traveling wave solutions to nonlinear partial differential equation, the complete discrimination system for polynomial and direct integral method are applied to the considered equation. All single traveling wave solutions to the equation can be obtained. As an example, we give the solutions to (3 + 1)-dimensional breaking soliton equation.

Product Market Competition, Competitive Position and Employee Wage  [PDF]
Li Yang
Journal of Human Resource and Sustainability Studies (JHRSS) , 2016, DOI: 10.4236/jhrss.2016.43019
Abstract: Although executives and workers all are the enterprise value creators, most research has focused on the study of executive compensation, and the wages of employees are less. Especially, there is little literature to study the salary problem of employees in product market competition environment. Using a sample of China’s listed firms from 2002 to 2014, we examine how product market competition influences firm worker’s pay. We find that market competition will strengthen employee wage, which results from market competition augment firm’s labor demand. At the same time we also find that the higher the competitive position of enterprises in the industry, the higher the wages. The evidence has an important implication for research on product market competition and corporate behavior and provides some useful suggestions for policy makers.
Study on Resonance Rayleigh Scattering Spectra of Mercaptopurine-Cu(II)-Nucleic Acid System  [PDF]
Jidong Yang, Yang Li
American Journal of Analytical Chemistry (AJAC) , 2012, DOI: 10.4236/ajac.2012.33026
Abstract: In pH 4.8 Britton-Robinson (B-R) buffer solution, Mercaptopurine (MP) could react with Cu(II) to form stable chelate compound, a new Resonance Rayleigh scattering (RRS) spectrum generated and enhanced for the binary system which the highest peak located at 453 nm as detection wavelength. But the RRS spectra could be quenched after adding her- ring milt DNA (hsDNA), salmon milt DNA (sDNA) and calf thymus DNA (ctDNA) into the binary system, respect- tively. And the weakened degree of spectra was directly proportional to the concentration of DNA. The reaction product of three nucleic acid system have identical spectral features, their range of linearity for the relation of spectral intensity with concentration respectively are 0.05 - 0.9 μg.mL-1 for hsDNA, 0.1 - 0.9 μg.mL-1 for sDNA and 0.3 - 0.9 μg.mL-1 for ctDNA; their detection limit respectively are 5 ng.mL-1for hsDNA, 6 ng.mL-1for sDNA, 6 ng?mL-1 for ctDNA. So a new method for determination of DNA was developed and successfully applied to determine the content of the DNA in artificial synthetized samples. At the same time the spectral features of absorption spectra and RRS spectra of the three reaction system, and the eligible reaction conditions and influencing factors were investigated in this paper.
Organizational Pressure Dimensions Measuring of “Post-80s” Employees and Its Implications for Talent Strategy  [PDF]
Dongjin Yang, Li Yang
Open Journal of Social Sciences (JSS) , 2014, DOI: 10.4236/jss.2014.212003
Abstract: This article adopts empirical research methods to measure the content of organizational pressure about “post-80s” employees. Exploratory factor analysis and confirmatory factor analysis are used to extract and verify 6 factors of organizational pressure. The 6 factors are workload, monotonous work, role conflict, interpersonal relationships, career development and organizational system. Based on the 6 dimensions of organization pressure, we propose some measures the organization should take, providing references for corporate human resources management.
A Min-Conflict Heuristic-Based Web Service Chain Reconfiguration Approach  [PDF]
Haifeng Li, Xiaoxia Yang
Intelligent Information Management (IIM) , 2010, DOI: 10.4236/iim.2010.210068
Abstract: The state-of-art Web services composition approaches are facing more and more serious bottlenecks of effectiveness and stability with the increasing diversity and real-time requirements of applications, since new web service chain must be generated from “scratch” for each application. To break these bottlenecks, this paper presents a Min-Conflict Heuristic-Based Web Service Chain Reconfiguration Approach(MCHRC) to maximal reuse relative web services chain: a min-conflict heuristic based regression search algorithms is proposed to implement the web services chain reconfiguration based on the formal definition of process constraint and integrity constraint to guarantee the correctness and integrality of the reconfiguration. This benefits the service reuse and then can relieve the time complexity of web service composition and improve web services chain executing stability by reduce service provider load. Experimental results show that this approach makes significant improvement on the effectiveness of web services composition.
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