建国初期毛泽东人民政协思想的伟大意义

中国人民政治协商会议是中国共产党领导的统一战线组织.毛泽东不仅亲自组织、领导建立了人民政协,而且在长期领导和指导政协工作的过程中,科学地阐明了人民政协的性质、确立了人民政协的基本职能、培育了人民政协的优良作风.     

《寻金者》中自然和空间意象的生态隐喻

西方现代文明语境下物质主义导致的内心空虚和对人类永恒精神家园的追寻,是法国生态作家勒克莱齐奥始终关注的主题。他在小说《寻金者》中通过“寻金”主题的双重隐喻,表达了作家一贯对西方现代文明和物质主义的批判;对自然元素和空间意象的诗意描绘,以及对异域土著文明生态价值的关注,赋予了作家笔下的想象空间以神话般的象征色彩和深刻的生态隐喻意义,表达了作家非西方中心主义的文明观和对人类真正宝藏——人与自然和谐家园的追求。     

延安精神与中国先进文化的前进方向

延安精神形成于革命战争年代的延安时期。从文化的角度看,它是对中国优秀传统文化地批判继承和升华,体现了中国共产党与时俱进的风范。在新的历史条件下,我们党始终大力弘扬延安精神,把握先进文化的前进方向,使它成为我们建设中国特色社会主义事业的巨大精神力量。     

基于4C理论的旅游纪念品开发研究

对旅游纪念品开发过程中市场开发的程度及管理中面临的问题进行了研究,为提高旅游纪念品开发的有效性和针对性,紧密结合市场需求,基于营销4C理论,分析了旅游纪念品开发的核心要素,提出基于4C理论的旅游纪念品新的开发模式——从推式营销向拉式营销的转变,从产品为主导向消费者为主导转变,并充分发挥政府规划、设计创新、人才培养的支撑作用,打造有竞争力的具备明显区域特色的旅游纪念品。     

Measures of individual risk attitudes and portfolio choice: Evidence from pension participants

We use a large non-student sample to test how distinct measures of risk-attitudes relate to each other, to demographic characteristics and to real-life risk taking in the financial domain. These measures, namely the Bomb Risk Elicitation Task (BRET), self-reported willingness to take risks in general, the choice in a hypothetical lottery, the score in the Domain Specific Risk-Taking (DOSPERT) scale, appear to be positively correlated and exhibit a certain degree of consistency. Furthermore, a subset of these measures is driven by similar demographic characteristics as such that males are more risk seeking and risk-aversion increases with age. Using extensive data on the retirement portfolios of the participants during the years 2008–2014, we find that all of these measures are positively correlated with the riskiness of individual portfolios. The self-reported willingness to take risks in general appears to be the most relevant measure in predicting actual risk-taking behavior.     

Do people think about absolute or relative price differences when choosing between substitute goods?

The article presents experimental evidence that shows that people often consider relative price differences in addition to absolute differences when choosing between substitute goods. Because the choice between substitute goods is a very common one, this is an important finding. The experiment uses scenarios in various consumption categories: hotel rooms, flights, and books. Subjects were either students or participants in an economics conference. The data allow to reject the hypothesis that people think only about relative price differences in favor of the hypothesis that people think about both relative and absolute price differences. Whether the price given to the subjects is that of the high-quality good or of the low-quality good makes a large difference, a result that is related to the endowment effect and the status quo bias. Implications of the results for business strategy and other areas are also discussed.     

The debt trap: A two-compartment train wreck… and how to avoid it

We explore sustainable paths out of a debt trap with a highly stylized two-sector differential equations model for the stocks of money in Government and Society. The model fits the data for the U.S. between 1981 and 2012 with a coefficient of correlation of 0.996. The solutions provide detailed “escape conditions” from the debt trap. A primary surplus is required. Then a government can escape its debt trap either through sustained annual monetary outflows from society to the government (taxation) but with a low initial growth rate, or through annual monetary inflows into both sectors (stimulus) with higher initial growth rate. We illustrate the use of our model with simulations which show how five indebted countries can escape their debt trap in 30 (or 70) years.     

LOG-PERIODOGRAM ESTIMATION OF LONG MEMORY VOLATILITY DEPENDENCIES WITH CONDITIONALLY HEAVY TAILED RETURNS

ABSTRACT

Many recent papers have used semiparametric methods, especially the log-periodogram regression, to detect and estimate long memory in the volatility of asset returns. In these papers, the volatility is proxied by measures such as squared, log-squared, and absolute returns. While the evidence for the existence of long memory is strong using any of these measures, the actual long memory parameter estimates can be sensitive to which measure is used. In Monte-Carlo simulations, I find that if the data is conditionally leptokurtic, the log-periodogram regression estimator using squared returns has a large downward bias, which is avoided by using other volatility measures. In United States stock return data, I find that squared returns give much lower estimates of the long memory parameter than the alternative volatility measures, which is consistent with the simulation results. I conclude that researchers should avoid using the squared returns in the semiparametric estimation of long memory volatility dependencies.     

C2C卖家的诚信行为模式及其动态性研究

现有电子商务的信用评价体系单一维度的特点使得评级体系难以准确衡量、比较店铺在各维度之间的差异及其变化。为了提高C2C电子商务信用评级体系的信息揭示作用,本文试图从多维度指标分析店铺的诚信行为模式及其动态性。本文对淘宝7大行业不同信用等级的卖家的诚信指标数据进行聚类分析表明,店铺在动态评分、信用等级、好评率上分别具有六类不同的静态组合特征,信用积分在解释店铺诚信状态上弱于动态评分和好评率指标。动态模式分析表明,店铺的好评率、动态评分指标及其与同业行业比值会呈现出三个不同的组合变化趋势。最后本文提出对现有的评价体系改进,以体现店铺之间在模式上的差异,从而真实展现卖家的诚信水平。