Guangdong University of Finance and Economics
Guangzhou, China
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Liu Y.,Guangdong University of Finance and Economics
Nonlinear Analysis: Real World Applications | Year: 2017

In this paper, we firstly introduce a model of four-point boundary value problem for generalized singular Lane–Emden systems on whole line. By establishing Green's function G(t,s) for problem [Formula presented], we prove that G(t,s)≥0 under some assumptions which actually generalize a corresponding result in Liu (2004). We then obtain sufficient conditions to guarantee existence of positive solutions of this kind of models. Finally, three examples are given at the end of the paper to illustrate main theorems. © 2016 Elsevier Ltd

Shen P.,Guangdong University of Finance and Economics
Proceedings - 2016 8th International Conference on Information Technology in Medicine and Education, ITME 2016 | Year: 2017

Nine influence factors for medical expenses of hepatitis A were measured on 115 patients with this disease. Next, factor analysis was performed to identify underlying variables, or factors, that explain the pattern of correlations within a set of observed risk factors. The factor analysis disclosed four factors that explained more than 76% of the variance: drug and examination costs factor, therapeutic and nursing care costs, surgery and medical material costs and diagnostic costs. Also, results of the present study do encourage efforts to explore new methods designated to find more effective way to control medical expense. © 2016 IEEE.

Li G.,Guangdong University of Finance and Economics
Agro Food Industry Hi-Tech | Year: 2017

With the continuous development of education reform in our country, the computer related teaching elements have gradually infiltrated into all kinds of subjects. As a new teaching method, the computer network teaching is more and more popular with the teachers and students, and the fine arts teaching is in no exception. Based on this, the modular education of art based on computer platform was studied in this paper. The related concepts and basic knowledge were firstly introduced. Then, the construction, analysis and research of the fine arts modular education system based on the computer platform were carried out. Finally, a survey was conducted. It is found that the combination of modular art education and computer assisted instruction can help students absorb knowledge points better.

LIU Y.,Guangdong University of Finance and Economics
Acta Mathematica Scientia | Year: 2016

Results on the existence of piecewise continuous solutions for two classes of initial value problems of impulsive singular fractional differential equations are obtained. © 2016 Wuhan Institute of Physics and Mathematics

Liu Y.,Guangdong University of Finance and Economics
Mathematical Methods in the Applied Sciences | Year: 2015

In this article, the existence of positive solutions of a boundary value problem for nonlinear singular fractional-order elastic beam equation is established. Here, f depends on t,x, and x'; f may be singular at t = 0 and t = 1; and f is a non-Carathéodory function. The results obtained are based upon fixed-point theorems in a cone in Banach space. An example is included to illustrate the main results. © 2015John Wiley & Sons, Ltd.

Nie P.-Y.,Guangdong University of Finance and Economics | Yang Y.-C.,Guangdong University of Finance and Economics
Applied Energy | Year: 2016

This article captures the effects of energy price fluctuations on the demand and supply of energy. By focusing on the industries that depend on energy inputs, we are able to apply these effects and analyze the Chinese energy industry. Four main sets of results are presented. First, rising energy prices reduce output and social welfare. Second, the energy industry in China has a vertical market structure, which acts as an amplifier of energy price fluctuations that increase with market power of energy firms. Third, environmental objectives can be achieved through energy price regulation, thereby weakening the market power of energy firms. Interestingly, the formula of price regulation needed to achieve the environmental objectives is given. Finally, entry-level regulation can reduce emissions. In summary, this article supports the concept of energy industry regulation by decision-makers. © 2015 Elsevier Ltd.

Dai H.-L.,Guangdong University of Finance and Economics
Applied Soft Computing Journal | Year: 2015

The classification of imbalanced data is a major challenge for machine learning. In this paper, we presented a fuzzy total margin based support vector machine (FTM-SVM) method to handle the class imbalance learning (CIL) problem in the presence of outliers and noise. The proposed method incorporates total margin algorithm, different cost functions and the proper approach of fuzzification of the penalty into FTM-SVM and formulates them in nonlinear case. We considered an excellent type of fuzzy membership functions to assign fuzzy membership values and got six FTM-SVM settings. We evaluated the proposed FTM-SVM method on two artificial data sets and 16 real-world imbalanced data sets. Experimental results show that the proposed FTM-SVM method has higher G-Mean and F-Measure values than some existing CIL methods. Based on the overall results, we can conclude that the proposed FTM-SVM method is effective for CIL problem, especially in the presence of outliers and noise in data sets. © 2015 Elsevier B.V. All rights reserved.

Liu Y.,Guangdong University of Finance and Economics
Mathematical Methods in the Applied Sciences | Year: 2016

We point out some mistakes in a known paper. Some existence results for solutions of two classes of boundary value problems for nonlinear impulsive fractional differential equations are established. Our analysis relies on the well-known Schauder fixed point theorem. Examples are given to illustrate the main results. © 2016 John Wiley & Sons, Ltd.

Wang Z.,Guangdong University of Finance and Economics
WIT Transactions on Information and Communication Technologies | Year: 2014

People have different viewpoints on interdisciplinary recruited graduate student. Positive effects of multidisciplinary training are analyzed. Innovative talents training usually depends on a wide range of discipline knowledge, and interdisciplinary graduate students meet the growth law of creative talents. The negative effects are also summarized - Students' knowledge structure is not reasonable because their foundation of the new major is not solid, so they are difficult to catch professional trends. Finally, the reasons to form above characteristics are summarized. This helps to improve the multidisciplinary postgraduate training program. © 2014 WIT Press.

Peng R.,Guangdong University of Finance and Economics | Wu B.,Duke University
Journal of Aging and Health | Year: 2015

Objective: To examine rates of institutionalization of Chinese older adults aged 65+ and the impact of changes in health status on the likelihood of institutionalization. Method: Using data from the 2002, 2005, 2008, and 2011 waves of the Chinese Longitudinal Healthy Longevity Survey (CLHLS), admission rates for each 3-year interval between waves were calculated. Logistic regression models were used to assess the changes of five health status variables as risk factors. Results: Between the first (2002-2005) and third (2008-2011) intervals, the institutionalization rate increased from 0.5% to 0.8%. Risk of institutionalization increased 70% for respondents with declining ability to perform activities of daily living, 53% for those with declining cognitive function, and 44% for those with increasing number of chronic diseases. Discussion: Development of policies and programs to improve older adults' health status is essential to delay institutionalization. Quality of workforce is also critical in meeting the care needs. © The Author(s) 2015.

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