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Search Results: 1 - 10 of 96333 matches for " Liu Song "
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Convenient Way of Extend Linear Expenditure System Modeling without Regression  [PDF]
Ningning Song, Yiqing Liu
Open Journal of Statistics (OJS) , 2015, DOI: 10.4236/ojs.2015.56055

Extend Linear Expenditure System model is a collection of multiple linear models, and modeling is a clearly tedious process. The innovation of this paper is trying to find a simple way of ELES modeling, which means, in order to omit the modeling process one by one, we try to use Excel functionality to create a model workplace. As long as you replace the original sample data in the workspace, you can get the results you want.

The New Viscosity Approximation Methods for Nonexpansive Nonself-Mappings  [PDF]
Chao Liu, Meimei Song
International Journal of Modern Nonlinear Theory and Application (IJMNTA) , 2016, DOI: 10.4236/ijmnta.2016.52011
Abstract: In this paper, to find the fixed points of the nonexpansive nonself-mappings, we introduced two new viscosity approximation methods, and then we prove the iterative sequences defined by above viscosity approximation methods which converge strongly to the fixed points of nonexpansive nonself-mappings. The results presented in this paper extend and improve the results of Song-Chen [1] and Song-Li [2].
Increasing Alternative Promoter Repertories Is Positively Associated with Differential Expression and Disease Susceptibility
Song Liu
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0009482
Abstract: Alternative Promoter (AP) usages have been shown to enable diversified transcriptional regulation of individual gene in a context-specific (e.g., pathway, cell lineage, tissue type, and development stage et. ac.) way. Aberrant uses of APs have been directly linked to mechanism of certain human diseases. However, whether or not there exists a general link between a gene's AP repertoire and its expression diversity is currently unknown. The general relation between a gene's AP repertoire and its disease susceptibility also remains largely unexplored.
Dynamic Profits Sharing Mechanism for a High-tech Virtual Enterprise
Song Liu
International Journal of Business and Management , 2010, DOI: 10.5539/ijbm.v5n9p196
Abstract: To establish a High-tech Virtual Enterprise (HTVE) is an effective method for a High-tech enterprise to quickly respond to market opportunity and disperse risks. However, most partners readily incline to reduce their innovation efforts for worrying about lose resulted from unpredictable risks. Thus, it is imperative to design a practical profits sharing mechanism to stimulate partners’ effort by timely compensating their potential loss. A quantitative model was firstly established to examine how some factors such as risk preference, core competency and cost etc. can comprehensively affect the effort degree of a partner. Based on this analysis, a formula to calculate the desired profits sharing proportion of each partner are provided. Considering the changes of uncertainties will make the original profits sharing tactics unreasonable, the paper subsequently provides a method to monitor the conflict degree of profits sharing and tactics to modify profits sharing tactics dynamically according to the actual cost and risks assumed by partners in different stage. The dynamic profits sharing mechanism can motivate partners’ efforts more effectively than traditional mechanism can.
Liquidity Expectation, Financing Ability and Credit Rating: Evidence from China  [PDF]
Shan Tian, Song Zhu, Bo Liu
Modern Economy (ME) , 2012, DOI: 10.4236/me.2012.35083
Abstract: Sovereign Credit Ratings of many countries and credit rating of dozens of firms has been downgraded since the latest financial crisis. However in China short-term financing market, the credit rating seems to show a counter-cyclical phe- nomenon. We find that when the market and the economy upsurge, the bond principal rating is relatively poor; when the market and economy downturn, the bond principal rating is relatively high. In other words, the ratings of short-term financing bills show a counter-cyclical phenomenon. We propose the liquidity hypothesis for this phenomenon that during the period of economic prosperity, market liquidity and capital is relatively abundant; therefore even the compa- nies with poor ratings have access to raise funds. When the market downturns and liquidity is poor, there are not enough funds in the market, thus the companies with poor ratings may fall to finance due to the lack of funds. Therefore, the liquidity of the market causes the bond rating to show a counter-cyclical phenomenon. Empirical research supports this hypothesis.
Simulation Analysis of Car Front Collision Based on LS-DYNA and Hyper Works  [PDF]
Chunke Liu, Xinping Song, Jiao Wang
Journal of Transportation Technologies (JTTs) , 2014, DOI: 10.4236/jtts.2014.44030
Abstract: Based on the basic principle of vehicle crash analysis using the finite element method, a car finite element model was built by using Hypermesh software. To simulate the front collision test of the car, the LS-DYNA software is adopted to calculate the deformation of the car and the acceleration time history curves during the crashing process; the anti-impact capability of the car is evaluated from this simulation. The results demonstrate that the improvement of local structure can promote the crashworthiness of the car, but the further improvement needs a major change of the car structure.
New Oscillation Criteria for the Second Order Nonlinear Differential Equations with Damping  [PDF]
Quanxin Zhang, Xia Song, Shouhua Liu
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.47122
Abstract: In this paper, we are concerned with a class of second-order nonlinear differential equations with damping term. By using the generalized Riccati technique and the integral averaging technique of Philos-type, two new oscillation criteria are obtained for every solution of the equations to be oscillatory, which extend and improve some known results in the literature recently.
Research Based on Patent Analysis about the Present Status and Development Trends of Unmanned Aerial Vehicle in China  [PDF]
Qi Liu, Zhangzhi Ge, Wei Song
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.47027
Abstract: For knowing the present status and development trends of unmanned aerial vehicle (UAV) in China, the paper uses patent analysis method to carry out quantitative and qualitative research based on technology life cycle theory. The research concludes that China’s UAV technology has been in the period of growth stage with large development potential and an increasingly number of technology fields are springing up. But some problems, such as low percentage of invention patent, single type of innovation subject, weakness of innovation ability and imbalance in development of different region, still exist. In order to promote the equalization, standardization and internationalization of UAV industry, the paper puts forward some recommendations.
Evidence-Based Medicine Research on Shanghan Zabing Lun Prescriptions in the Treatment of Endometriosis  [PDF]
Junsheng Song, Hongyu Liu, Mengmeng Han
Open Journal of Obstetrics and Gynecology (OJOG) , 2016, DOI: 10.4236/ojog.2016.612095
Abstract: Objective: Adopting the methods of Evidence-based Medicine research to acquire the dominant prescriptions of Shanghan Zabing Lun in the treatment of Endometriosis, meanwhile to fully dig the value of classical prescriptions. Method: Firstly, we searched and collected the literatures from last three decades in CNKI, Wanfang and VIP databases, which are about classical prescriptions treating endometriosis. Then, by screening all the literatures, we obtained the clinical research literatures and individual case reports. Finally, we went through the internal quality of the two categories of literatures to get the dominant prescriptions. Results: 22 Shanghan Zabing Lun prescriptions have been used in the treatment of endometriosis. According to the clinical research and case literatures, Guizhi Fuling Wan is the prime prescription to treat endometriosis with high quality and high frequency. Conclusions: Through evidence-based medical research and evaluation of evidence, it can be seen that treatment of endometriosis presents a certain tendency that Guizhi Fuling Wan, Wenjing Decoction and Dahuang Zhechong Wan have good clinical effect treating endometriosis and their syndromes are well matched with the symptoms of endometriosis in the present clinical environment.
Extracting Knowledge from On-Line Forums for Non-Obstructive Psychological Counseling Q&A System  [PDF]
Yuanchao Liu, Ming Liu, Zhimao Lu, Mingkai Song
International Journal of Intelligence Science (IJIS) , 2012, DOI: 10.4236/ijis.2012.22006
Abstract: Psychological counseling Q&A system is enjoying a remarkable and increasing popularity in recent years. Knowledge base is the important component for such kind of systems, but it is difficult and time-consuming to construct the knowledge base manually. Fortunately, there emerges large number of Q&A pairs in many psychological counseling websites, which can provide good source enriching the knowledge base. This paper presents the method of knowledge extraction from psychological consulting Q&A pairs of on-line psychological counseling websites, which include keywords, semantic extension and word sequence. P-XML, which is the knowledge template based on XML, is also designed to store the knowledge. The extracted knowledge has been successfully used in our non-obstructive psychologycal counseling system, called P.A.L., and the experimental results also demonstrated the feasibility and effectiveness of our approach.
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