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Search Results: 1 - 10 of 68627 matches for " Xing Yang "
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The Research on the Economic Effect of Market-Based Environmental Policy Instruments  [PDF]
Yunfan Bai, Xing Yang
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.44006
Abstract: Market-based environmental policy has many forms, including carbon trade and carbon taxes. The choice of market-based environmental policy instruments needs careful consideration of the effect on economy growth and structure. In the analytical framework of Ramsey model, carbon emissions are added into the instantaneous utility function and the problem of maximization of enterprise profits. Based on this hypothesis, the balance growth path and dynamitic changes of consumption and investment could be compared under different market-based environmental policy instruments. The conclusion shows that market-based environmental policy instruments have a negative effect on economic growth in the short run. However, in the long run, these instruments can promote economic growth and optimize economic structure by giving enterprises motivation to improve emission reduction technology. The distinction of these two environmental policy instruments lies in the difference between the price of carbon emission permit and the rate of carbon taxes. Moreover, by derivation, it is obvious that saving rate is inversely linked to carbon tax rate (or the price of carbon emission permit). Therefore, according to the current situation in China’s economic development, in order to improve consumption’s contribution on economic growth, we can choose the instrument which has higher price to reduce saving rate. In this way, consumption can be promoted and the structure of economics can be optimized.
A Study on the Law of Cyclical Fluctuation of Carbon Price—Empirical Evidence from EU ETS  [PDF]
Xing Yang, Hanfeng Liao
Low Carbon Economy (LCE) , 2018, DOI: 10.4236/lce.2018.94007
Abstract: Based on the trading data of the Bluenext and the European Climate Exchange (ECX), this paper analyzes the cyclic price fluctuations of the EU carbon emission rights by means of the maximum entropy spectrum and wavelet variance. The results show that: 1) there are obvious cyclical price fluctuations in the EU carbon trading market, with the longest cycle being 33 months and the shortest 5.7; 2) researches on the factors that affect the cyclical price fluctuations of carbon emission rights manifest that power prices (POWER) exert the greatest implication on the prices of carbon emission rights, followed by coal prices (COAL). For every 1% change in POWER, the price of carbon emission rights changes 10.95% towards the same direction. For every 1% change in COAL, the price of carbon emissions changes 9.28% towards the opposite; 3) research based on variance decomposition demonstrates that electricity prices contribute the most to the changes of the price of carbon emissions, and the variance contribution rate is 13% at a lag cycle of 30 days.
The General Definition of the Complex Monge-Ampère Operator on Compact K?hler Manifolds
Yang Xing
Mathematics , 2007,
Abstract: We introduce a wide subclass ${\cal F}(X,\omega)$ of quasi-plurisubharmonic functions in a compact K\"ahler manifold, on which the complex Monge-Amp\`ere operator is well-defined and the convergence theorem is valid. We also prove that ${\cal F}(X,\omega)$ is a convex cone and includes all quasi-plurisubharmonic functions which are in the Cegrell class.
On adaptive Bayesian inference
Yang Xing
Mathematics , 2008, DOI: 10.1214/08-EJS244
Abstract: We study the rate of Bayesian consistency for hierarchical priors consisting of prior weights on a model index set and a prior on a density model for each choice of model index. Ghosal, Lember and Van der Vaart [2] have obtained general in-probability theorems on the rate of convergence of the resulting posterior distributions. We extend their results to almost sure assertions. As an application we study log spline densities with a finite number of models and obtain that the Bayes procedure achieves the optimal minimax rate $n^{-\gamma/(2\gamma+1)}$ of convergence if the true density of the observations belongs to the H\"{o}lder space $C^{\gamma}[0,1]$. This strengthens a result in [1; 2]. We also study consistency of posterior distributions of the model index and give conditions ensuring that the posterior distributions concentrate their masses near the index of the best model.
Convergence Rates of Nonparametric Posterior Distributions
Yang Xing
Mathematics , 2008,
Abstract: We study the asymptotic behavior of posterior distributions. We present general posterior convergence rate theorems, which extend several results on posterior convergence rates provided by Ghosal and Van der Vaart (2000), Shen and Wasserman (2001) and Walker, Lijor and Prunster (2007). Our main tools are the Hausdorff $\alpha$-entropy introduced by Xing and Ranneby (2008) and a new notion of prior concentration, which is a slight improvement of the usual prior concentration provided by Ghosal and Van der Vaart (2000). We apply our results to several statistical models.
Convergence rates of posterior distributions for observations without the iid structure
Yang Xing
Mathematics , 2008,
Abstract: The classical condition on the existence of uniformly exponentially consistent tests for testing the true density against the complement of its arbitrary neighborhood has been widely adopted in study of asymptotics of Bayesian nonparametric procedures. Because we follow a Bayesian approach, it seems to be more natural to explore alternative and appropriate conditions which incorporate the prior distribution. In this paper we supply a new prior-dependent integration condition to establish general posterior convergence rate theorems for observations which may not be independent and identically distributed. The posterior convergence rates for such observations have recently studied by Ghosal and van der Vaart \cite{ghv1}. We moreover adopt the Hausdorff $\alpha$-entropy given by Xing and Ranneby \cite{xir1}\cite{xi1}, which is also prior-dependent and smaller than the widely used metric entropies. These lead to extensions of several existing theorems. In particular, we establish a posterior convergence rate theorem for general Markov processes and as its application we improve on the currently known posterior rate of convergence for a nonlinear autoregressive model.
Continuity of the complex Monge-Ampere operator
Yang Xing
Mathematics , 1994,
Abstract: The complex Monge-Amp\`ere operator $(dd^c)^n$ is an important tool in complex analysis. It would be interesting to find the right notion of convergence $u_j\to u$ such that $(dd^cu_j)^n\to (dd^cu)^n$ in the weak topology. In this paper, using the $C_{n-1}$-capacity, we give a sufficient condition of the weak convergence $(dd^cu_j)^n\to (dd^cu)^n$. We also show that our condition is quite sharp in some case.
Continuity of the Complex Monge-Ampere Operator on Compact Kahler Manifolds
Yang Xing
Mathematics , 2007,
Abstract: We prove several approximation theorems of the complex Monge-Ampere operator on a compact Kahler manifold. As an application we give a new proof of a recent result of Guedj and Zeriahi on a complete description of the range of the complex Monge-Ampere operator in the class of w-plurisubharmonic functions with vanishing complex Monge-Ampere mass on all pluripolar sets. As a by-product we obtain a stability theorem of solutions of complex Monge-Ampere equations in some subclass.
A Decomposition of Complex Monge-Ampere Measures
Yang Xing
Mathematics , 2007,
Abstract: We prove one decomposition theorem of complex Monge-Ampere measures of plurisubharmonic functions in connection with their pluripolar sets.
The Construction of Human Resource Management Cloud Service Platform  [PDF]
Liangtie Dai, Yang He, Guangdong Xing
Intelligent Information Management (IIM) , 2015, DOI: 10.4236/iim.2015.71001
Abstract: Human resource management service faced the challenges of promoting efficiency, costs saving, quick responding and so on. In order to face these challenges, this paper puts forward a “6 + 1” structure of human resource management service combined with some characteristics of cloud computing, elaborates the service mode of the cloud service platform based on this structure, the characteristics and challenges of the platform, and hopes to provide a new service perspective to human resource management.
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