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Search Results: 1 - 10 of 132131 matches for " Shan Li "
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The Impact of Economic Growth and Tax Reform on Tax Revenue and Structure: Evidence from China Experience  [PDF]
Kanghua Zeng, Shan Li, Qian Li
Modern Economy (ME) , 2013, DOI: 10.4236/me.2013.412091

This paper aims to study the mechanism of how economic growth and tax reform affect total tax revenue and structure over the period (1950-2011). On the basis of the introduction of China’s previous main measures in tax reform, this paper uses methods as descriptive statistics, multi-segment linear regression model and principal component analysis to analyze how economic growth and tax reform affect the total tax revenue and structure mainly from three aspects as the total amount of the tax, the value-added tax and the corporate income tax, which are under the background of tax reform. The empirical results show that economic growth not only has a significant impact on the total tax revenue and structure changes, but also has a long-term stability relationship with total tax revenue. And in a long term, there is no extraordinary growth of tax revenue. In addition, every tax reform shows a clear impact on the tax structure, while the impact of changes in the total tax revenue is diminishing over time.


Rogue Waves of the Kundu-DNLS Equation  [PDF]
Shibao Shan, Chuanzhong Li, Jingsong He
Open Journal of Applied Sciences (OJAppS) , 2013, DOI: 10.4236/ojapps.2013.31B1020

In this paper, we give the Lax pair and construct the Darboux transformation of the Kundu-DNLS equation. Furthermore, the rogue wave solutions of the Kundu-DNLS equation are derived by using the Taylor expansion of the breather solution. What's more, the triangular and the circular patterns of the third rouge solution are displayed.

Stability and Hydration/Dehydration Mechanisms of a Carboxylate-Containing Metal-Organic Framework  [PDF]
Shan Yan, Lina Xu, Xinhua Li
World Journal of Mechanics (WJM) , 2018, DOI: 10.4236/wjm.2018.81001
Abstract: Metal-organic frameworks (MOFs) are promising functional compounds; however, they are known to be moisture sensitive. Here, we investigate the hydration and dehydration processes of the carboxylate-containing MOFs [Ni2(nic)4(H2O)]n (nic = nicotinic acid) and the mononuclear complex [Ni(nic)2(H2O)4], respectively. X-ray single crystal diffraction reveals that the hydrogen bonds between water and carboxylic oxygen play a key role in these processes. Molecular-level mechanisms of reversible hydration and dehydration are proposed, based on the competition between water and carboxylic oxygen for coordination with Ni. This study provides important information for future studies on the hydrolytic stability of MOFs in moisture.
Asymptotic Behavior of a Class of Degenerate Parabolic Equations
Hongtao Li,Shan Ma
Abstract and Applied Analysis , 2012, DOI: 10.1155/2012/673605
Effect of hesperidin and rutin on oxidative modification of high density lipoprotein in vitro
LI Qin-Shan
Zhong Xi Yi Jie He Xue Bao , 2004,
Abstract: Objective: To study the effect of hesperidin and rutin on oxidative modification of high density lipoprotein (HDL) in vitro.Methods: HDL was isolated from healthy human plasma by sequential ultracentrifugation, and was oxidized by copper ions. The inhibitory effects of hesperidin and rutin on HDL oxidative modification were valued by the formation of malondialdehyde (MDA). Results: Hesperidin and rutin significantly inhibited copper-induced oxidation of HDL in a dose-dependent manner.Conclusion: Both hesperidin and rutin can prevent HDL from copper-induced oxidative modification in vitro. This result suggests that they might have antiatherogenic effect.
Positive periodic solutions for a predator-prey model with time delays and impulsive effect
Shan Gao,Yongkun Li
Electronic Journal of Differential Equations , 2008,
Abstract: In this article, a two-species predator-prey model with time delays and impulsive effect is investigated. By using Mawhin's continuation theorem of coincidence degree theory, sufficient conditions are obtained for the existence of positive periodic solutions.
A Scalable Clustering Algorithm in Dense Mobile Sensor Networks
Jianbo Li,Shan Jiang
Journal of Networks , 2011, DOI: 10.4304/jnw.6.3.505-512
Abstract: Clustering offers a kind of hierarchical organization to provide scalability and basic performance guarantee by partitioning the network into disjoint groups of nodes. In this paper a scalable and energy efficient clustering algorithm is proposed under dense mobile sensor networks scenario. In the initial cluster formation phase, our proposed scheme features a simple execution process with polynomial time complexity, and eliminates the “frozen time” requirement by introducing some GPS-capable mobile nodes to act as cluster heads. In the following cluster maintenance stage, the maintenance of clusters is asynchronously and event driven so as to thoroughly eliminate the “ripple effect” brought by node mobility. As a result local changes in a cluster need not be seen and updated by the entire network, thus bringing greatly reduced communication overheads and being well suitable for the high mobility environment. Extensive simulations have been conducted and the simulation results reveal that our proposed algorithm successfully achieves its target at incurring much less clustering overheads as well as maintaining much more stable cluster structure, as compared to HCC(High Connectivity Clustering) algorithm
Asymptotic Behavior of a Class of Degenerate Parabolic Equations
Hongtao Li,Shan Ma
Abstract and Applied Analysis , 2012, DOI: 10.1155/2012/673605
Abstract: We investigate the asymptotic behavior of solutions of a class of degenerate parabolic equations in a bounded domain ( ) with a polynomial growth nonlinearity of arbitrary order. The existence of global attractors is proved in , , and , respectively, when can be just compactly embedded into ( ) but not . 1. Introduction Let us consider the following degenerate parabolic equations: where is a bounded domain in ( ), with smooth boundary , is a given nonnegative function, and is a function satisfying both for all . For the long-time behavior problems of the classical evolutionary equations, especially, the classical reaction-diffusion equation, much has been accomplished in recent years (see, e.g., [1–9] and the references therein), whereas for degenerated evolutionary equations such information is by comparison very incomplete. The main feature of the problem (1.1) is that the differential operator is degenerate because of the presence of a nonnegative diffusion coefficient which is allowed to vanish somewhere (the physical meaning, see [10–12]). Actually, in order to handle media which have possibly somewhere “perfect” insulators (see [10]) the coefficient is allowed to have “essential” zeroes at some points or even to be unbounded. In [13], the authors considered the existence of positive solutions when nonlinearity is superlinear and subcritical function for a semilinear degenerate elliptic equation under the assumption that , for some , satisfies Recently, motivated by [13], under the same assumption as in [13], the authors of [11, 12, 14–20] proved the existence of global attractors of a class of degenerate evolutionary equations for the case of . The present paper is devoted to the case of which is essentially different from the case of , and which will cause some technical difficulties. In [13], the authors pointed out that the number plays the role of critical exponent. It is well known that some kind of compactness of the semigroup associated with (1.1) is necessary to prove the existence of the global attractor in . However, there is no corresponding compact embedding result in this case since is compactly embedded only into but not . Hence, the existence of the global attractor in cannot be obtained by usual methods. In this paper, we assume the weighted function satisfies the following. and for every . We will firstly obtain the existence and uniqueness of weak global solutions by use of the singular perturbation then use the asymptotic a priori estimate (see [9]) to verify that the semigroup associated with our problem is asymptotically
Impact parameter dependence of the scaling of anisotropic flows in intermediate energy HIC
Tingzhi Yan,Shan Li
Physics , 2013, DOI: 10.1088/1674-1137/38/8/084104
Abstract: The scaling behaviors of anisotropic flows of light charged particles are studied for 25 \,MeV/nucleon $^{40}$Ca+$^{40}$Ca collisions at different impact parameters by the isospin-dependent quantum molecular dynamics model. The number of nucleons scaling of elliptic flow is existed and the scaling of the ratios of $v_{4}/v_{2}^{2}$ and $v_{3}/(v_{1}v_{2})$ are applicable for collisions at almost all impact parameters except for peripheral collisions.
Sexual Teasing in Chinese Entertaining TV Programs
Jia LI,Shan-shan ZHU
Cross-Cultural Communication , 2008, DOI: 10.3968/689
Abstract: Humor is a shared characteristic of human beings. Among various kinds of humor, teasing is one of the most risky forms. Teasing related to sex is even more sensitive in most cultures. As is learned in previous studies, females tease less than males in general and both males and females tend to tease males more than females. It is due to the power difference and social asymmetry between different genders. This phenomenon is what has been found in natural occurrence of teasing. However, it is not the case in entertaining TV programs. We examined two Chinese TV talk shows, and found that the hostess is as aggressive as the host when making sexual teasing towards guests. Furthermore, the host/hostess does not consider the gender of the guests when teasing them about sexuality. That is in contrast with the natural occurrence. The explanation to this difference can be attributed to the asymmetrical power between hosts/hostesses and guests in the entertaining TV programs. Key words: sexual teasing, gender, power, entertaining TV programs Résumé: L’humour est une caractéristique partagée des êtres humains. Parmi les diverses sortes d’humour, la taquinerie est une des formes les plus risquées. La taquinerie relative au sexe est même plus sensible dans la plupart des cultures. D’après les études précédentes, on sais que les femmes taquinent généralement moins que les hommes, et que tous tendent à taquiner les hommes plut t que les femmes. Cela est d à la différence de puissance et à l’asymétrie sociale entre les deux sexes. C’est ce qu’on a trouvé dans la taquinerie naturelle. Mais ce n’est pas le cas dans les programmes télévisés de divertissement. Après avoir examiné deux talk show télévisés chinois, nous avons trouvé que l’animatrice est aussi agressive que l’animateur quand ils taquinent les invités. De plus, l’animateur ne considère pas le sexe des invités en taquinant sur la sexualité. C’est contraire à la situation normale. Cette différence est attribuée à l’asymétrie de puissance entre l’animateur et les invités dans les programmes télévisés de divertissement. Mots-Clés: taquinerie sexuelle, sexe, puissance, programmes télévisés de divertissement 摘要:幽默是人類所共有的特點。在各種形式的幽默中,嘲弄是最冒險的形式之一。在大多數文化裏,與性有關的嘲弄尤為敏感。以往的研究中曾經提到,一般來說,同女性相比,嘲弄更容易發生在男性身上;而不論對女性還是對男性而言,他(她)們的嘲弄對象多是男性。這是由於兩性之間的力量差異以及社會地位不對稱性所造成的。這一特點是由在自然情況下發生的嘲弄現象中所總結出來的。然而,在電視娛樂節目中卻不儘然。本文對兩個中國電視脫口秀節目進行了研究,發現在對嘉賓進行“性”嘲弄的時候,女主持人在攻擊性方面與男主持人不相上下。另外,男女主持人在進行“性”嘲弄的時候並沒有刻意考慮嘉賓的性別。這些現象與自然情況下十分不同。這種差異可以由電視娛樂節目中主持人和嘉賓之間不對稱的力量關係來解釋。 關鍵詞:“性”嘲弄;性別;力量;電視娛樂節目
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