赫鲁晓夫说的共产主义是“土豆烧牛肉”吗?——与周尚文、有林等先生商榷

赫鲁晓夫阐述的共产主义,既有经济、社会、政治等方面的伟大目标,也有分阶段实现这些目标的具体时间表.周尚文、有林等先生认为,赫鲁晓夫鼓吹的共产主义是“土豆烧牛肉”的“共产主义”.此说不仅曲解了赫鲁晓夫相关话语的原意,而且把赫鲁晓夫的共产主义观庸俗化、简单化了.     

Crossing borders with social media: Online social networks and FDI

Social media is embedded in today's internationalization strategy. Companies extend their reach into foreign countries by posting and tweeting. Firms also enhance their mobile capabilities in foreign markets (e.g., knowledge and reputation) through user-generated content in online social networks. Levering on the capabilities-based theory of the multinational enterprise, this paper builds upon a resource-based, industry/network-based, and institution-based view framework. The study provides a comprehensive conceptual and empirical model to explain the effect of social networks on foreign direct investment. Empirical analysis in a global panel dataset of >4500 multinational enterprises suggests that online social networks' activity stimulates foreign capital expenditure and new affiliates. In addition, the article explores the relevance of customer capabilities along with sectoral and institutional moderating effects.     

《水浒传》女性视点生成及其拓新价值

在英雄本位语境下,《水浒传》女性视点呈现出弱化、丑化、男化等非对称性、非常态化的建构。究其原因,除了宋明理学时代文化心理的深层影响外,更主要的是流传广布而极具世俗情味的江湖母题自然渗入《水浒传》的累积成型中,使得《水浒传》女性视点成为某些江湖母题的情节化、故事化和具象化,成为趋附于英雄本位而生的一类特定语境女性景观。《水浒传》的女性视点因对传统的文本模式、道德取向和审美习性的悬搁而呈现出一种全新的价值重构。     

Parameter identification for the discretely observed geometric fractional Brownian motion

This paper deals with the problem of estimating all the unknown parameters of geometric fractional Brownian processes from discrete observations. The estimation procedure is built upon the marriage of the quadratic variation and the maximum likelihood approach. The asymptotic properties of the estimators are provided. Moveover, we compare our derived method with the approach proposed by Misiran et al. [Fractional Black-Scholes models: complete MLE with application to fractional option pricing. In International conference on optimization and control; Guiyang, China; 2010. p. 573–586.], namely the complete maximum likelihood estimation. Simulation studies confirm theoretical findings and illustrate that our methodology is efficient and reliable. To show how to apply our approach in realistic contexts, an empirical study of Chinese financial market is also presented.     

多维视域下的喀什：从研究视野及诸研究问题说起

位于中国最西部的喀什具有悠久的城市历史、伊斯兰历史、多宗教交流史、多文化融通史,这就使得喀什文化成为民族特色鲜明同时兼容多种他者文化元素的典范.与此同时,在喀什城市发展史上,体现出鲜明的文化改造、创新的变动过程.这些决定了对喀什城市的研究必须要有开放的视野和充分语境化的意识,要对现今有关研究存在的诸问题有清晰的认识.     

Monitoring the coefficient of variation using a variable sample size and sampling interval control chart

This article proposes a CV chart by using the variable sample size and sampling interval (VSSI) feature to improve the performance of the basic CV chart, for detecting small and moderate shifts in the CV. The proposed VSSI CV chart is designed by allowing the sample size and the sampling interval to vary. The VSSI CV chart's statistical performance is measured by using the average time to signal (ATS) and expected average time to signal (EATS) criteria and is compared with that of existing CV charts. The Markov chain approach is employed in the design of the chart.     

A simulation study of the Bennett test and Miller test for coefficients of variation

In the article, properties of the Bennett test and Miller test are analyzed. Assuming that the sample size is the same for each sample and considering the null hypothesis that the coefficients of variation for k populations are equal against the hypothesis that k ? 1 coefficients of variation are the same but differ from the coefficient of variation for the kth population, the empirical significance level and the power of the test are studied. Moreover, the dependence of the test statistic and the power of the test on the ratio of coefficients of variation are considered. The analyses are performed on simulated data.     

浅析班固赋学观的矛盾

汉赋作为有汉一代之文学，从产生之初就伴随和背负上了重重矛盾和尴尬，赋家本身更是充满了矛盾和煎熬。斑回作为“汉赋四大家”之一．其围绕赋表现出的矛盾有其深刻的内涵和原因．他的赋学观鲜明而独特。他基于儒家诗学观的矛盾赋学观、自相矛盾的赋体艺术批评以及理论与创作的自我割裂与背叛是他对赋这种特殊文体的认识矛盾重重的具体表现。班固的矛盾主要缘于其身份的复杂性和当时士人特殊的生存状态与心态。     

Choosing Prior Hyperparameters: With Applications to Time-Varying Parameter Models

Time-varying parameter models with stochastic volatility are widely used to study macroeconomic and financial data. These models are almost exclusively estimated using Bayesian methods. A common practice is to focus on prior distributions that themselves depend on relatively few hyperparameters such as the scaling factor for the prior covariance matrix of the residuals governing time variation in the parameters. The choice of these hyperparameters is crucial because their influence is sizeable for standard sample sizes. In this article, we treat the hyperparameters as part of a hierarchical model and propose a fast, tractable, easy-to-implement, and fully Bayesian approach to estimate those hyperparameters jointly with all other parameters in the model. We show via Monte Carlo simulations that, in this class of models, our approach can drastically improve on using fixed hyperparameters previously proposed in the literature. Supplementary materials for this article are available online.