20世纪中国电视剧发展的分期及特征

从20世纪50年代到20世纪末,中国电视剧经历了一个由诞生到发展、繁荣的艰难历程。20世纪80年代中期以前的20多年可分为初创期、停滞期、复苏期和发展期;20世纪80年代中期到20世纪末可分为成熟期和繁荣期。从中可以见出其受社会外部影响和内部规律制约的情形,有助于推动中国电视剧艺术的进一步繁荣。     

论构建和谐社会的利益认同性

当前在社会阶层不断分化、利益关系复杂化、利益矛盾突出化的形势下,中国共产党从立党为公、执政为民,长期巩固执政地位的战略高度出发,加快推进社会主义和谐社会建设。构建社会主义和谐社会在广大人民群众中产生了高度的利益认同。从三个方面分析其利益认同性:一是利益导向的正确性,二是利益分配的合理性,三是利益实现的可行性。     

企业发展论研究

在分析企业经济控制论系统的特征及其基本结构的基础上,提出企业经济控制系统调节控制的基本公式,阐述了企业经济系统的控制转换模型,最终提出企业发展要研究的主要问题包括企业经济系统理论研究、企业投入要素研究、企业发展经营运行研究等。     

HEAVY-TAILED-DISTRIBUTED THRESHOLD STOCHASTIC VOLATILITY MODELS IN FINANCIAL TIME SERIES

To capture mean and variance asymmetries and time‐varying volatility in financial time series, we generalize the threshold stochastic volatility (THSV) model and incorporate a heavy‐tailed error distribution. Unlike existing stochastic volatility models, this model simultaneously accounts for uncertainty in the unobserved threshold value and in the time‐delay parameter. Self‐exciting and exogenous threshold variables are considered to investigate the impact of a number of market news variables on volatility changes. Adopting a Bayesian approach, we use Markov chain Monte Carlo methods to estimate all unknown parameters and latent variables. A simulation experiment demonstrates good estimation performance for reasonable sample sizes. In a study of two international financial market indices, we consider two variants of the generalized THSV model, with US market news as the threshold variable. Finally, we compare models using Bayesian forecasting in a value‐at‐risk (VaR) study. The results show that our proposed model can generate more accurate VaR forecasts than can standard models.     

关于公共利益的重新考量——土地征收问题中对美国法的几点借鉴

自我国物权法出台以来,围绕征收中有关公共利益界定问题的讨论层出不穷,同时,因对公共利益界定不明而引起的现实中的纠纷也为数不少,但是,目前在法学界对公共利益还尚未有明确的解释和界定,通过对美国的一些案例和判决的分析和借鉴,对公共利益的界定提出了几点看法.     

A note on interval‐censored lifetime data and the constant‐sum condition of oiler,gómez & calle (2004)

Oiler, Gomez & Calle (2004) give a constant sum condition for processes that generate interval‐censored lifetime data. They show that in models satisfying this condition, it is possible to estimate non‐parametrically the lifetime distribution based on a well‐known simplified likelihood. The author shows that this constant‐sum condition is equivalent to the existence of an observation process that is independent of lifetimes and which gives the same probability distribution for the observed data as the underlying true process.     

负载型铑催化剂催化苯乙酮的多相不对称氢化反应的研究

研究了苯乙酮在负载型铑催化剂催化下的多相不对称氢化反应,结果表明在以1%Rh-γ-Al2O3-2TPPTS和1%Rh-SiO2-2TPPTS为催化剂,(1S,2S)-二苯基乙二胺(DPEN)为手性修饰剂和一定量的KOH用于苯乙酮的不对称加氢反应,在反应条件为40oC,5MpaH2下,显示出好的催化活性,苯乙酮加氢产物的对映选择性分别达到了22.5%和25.4%。     

土地治权的变动与政权变迁

在传统农耕社会的制度框架中,土地不仅是一种经济学意义上的自然资源,更为重要的是作为一种政治活动的对象而存在。国家以政权的形式赋予土地所有权、土地经营方式以合法性的依据。土地治权与国家政权之间存在着一种内在的张力,土地治权作为国家意志在土地之中的凝结,其变动是对于社会利益的一种强制性的分割,与传统社会的政权变动有着内在性的相关。     

A general inverse sampling scheme and its application to adaptive cluster sampling

Not having a variance estimator is a seriously weak point of a sampling design from a practical perspective. This paper provides unbiased variance estimators for several sampling designs based on inverse sampling, both with and without an adaptive component. It proposes a new design, which is called the general inverse sampling design, that avoids sampling an infeasibly large number of units. The paper provide estimators for this design as well as its adaptive modification. A simple artificial example is used to demonstrate the computations. The adaptive and non‐adaptive designs are compared using simulations based on real data sets. The results indicate that, for appropriate populations, the adaptive version can have a substantial variance reduction compared with the non‐adaptive version. Also, adaptive general inverse sampling with a limitation on the initial sample size has a greater variance reduction than without the limitation.