基于CARR模型的上海股市量价关系实证研究

为研究股票市场的成交量与股价波动性之间的动态关系，引用台湾著名学者chou（2005）提出的CARR模型，实证分析上海股市成交量与股价波动性之间的动态关系，检验结果表明．CARR模型比GARCH模型的估计结果更为稳健，非预期成交量尤其是超过均值部分对股价波动性有一定的解释作用，而预期成交量对股价波动性的影响并不显著。     

The therapeutic potential of royal jelly in benign prostatic hyperplasia. Comparison with contemporary literature

The aim of this study is to establish the scientific benefit of royal jelly (RJ) on prostatic-specific antigen (PSA), post-void residual (PVR) volume and International Prostate Symptom Score (IPSS) in benign prostatic hyperplasia. For the study, a group of 40 men were administered 38?mg of RJ over a period of three months, their PSA values, prostate volumes and the volumes of their transitory prostate zones, PVR and IPPS values were measured at the end of the first month, and at the end of the third month. The results of this study confirm the potential of RJ in reducing PSA scores and improving IPSS values. Since the use of RJ did not lead to any significant reduction in PVR, prostate volume, or to any involution of the transitory zone, it appears that it may only affect the blood marker of prostatic hyperplasia and to improve quality-of-life (QoL) in those patients. Overall, in comparison to phytotherapy and conventional therapy, RJ had similar positive effects on QoL in patients with BPH, however it exhibited markedly better effects on reducing PSA levels in blood. The therapeutical use of RJ exhibited no side effects.     

基于互联网搜索信息的预测模型研究--以余额宝产品需求为例

基于百度指数，以余额宝资产规模为例，运用ARIMA模型构建引入互联网搜索量的市场需求预测模型，同时建立不含互联网搜索量的预测模型，并将二者进行对比研究，发现包含互联网搜索量数据的预测模型的预测准确度更高，说明互联网搜索量数据包含一些在传统模型中未能考虑到的因素，该变量的引入有利于提高模型的预测准确度，为产品或服务的市场决策提供更加精确的预测结果。     

中国硬麦期货价格的波动性实证研究

针对期货合约数据处理的困难，论文提出一种新的合约连续数据处理方法，对2002年1月～2 004年8月中国硬麦期货数据进行处理，并采用TARCH模型，按照距离到期日时间的不同对价 格波动性进行研究。结果表明，不同交易时段的硬麦期货价格波动存在差异,进一步表明成 交量是价格波动和引起差异的主要原因     

铁路运输经济的若干问题

近年，中国铁路铁路的快速发展，取得了很多成就，引起国内外的广泛关注。但同时我们也应看到，铁路企业经营效益不容乐观。资产负债率逐年攀升，货运量大幅递减，市场份额不断下降。在铁路建设加快发展的同时，铁路运输经济出现了哪些亟待解决的问题，需要进行深入的探讨和研究。主要问题包括铁路投资经营问题、铁路运输市场问题、铁路运价管理问题、铁路收入清算问题、铁路人才队伍问题。     

Consumption benefits and gambling: Evidence from the NCAA basketball betting market

The utility of gambling model posits that consumption benefits lead rational agents to gamble when faced with negative expected financial returns. We analyze the determinants of bet volume and dollars bet on NCAA basketball games from three on-line sports books to test the predictions of this model. Betting action depends on television coverage, team quality, and the expected closeness of the contest. Our results support the notion that consumption benefits, not financial gain, motivate gambling. Preferences of bettors appear similar to those of sports fans, suggesting that models of gamblers as wealth-maximizing investors may not explain observed betting behavior.     

我国的融资租赁及其会计处理

现代市场经济社会中 ,很多企业都存在资金不足的问题。企业要想在激烈的竞争中获胜 ,解决资金不足的问题非常重要 ,其中融资租赁是一种较好的筹资渠道。     

对建设工程竣工结算核对工作的探析

工程项目竣工结算审核是竣工结算阶段一项重要技术经济工作。经审核的竣工结算是核定工程造价的依据,也是工程项目验收后核定新固定资产价值的依据。做好建设工程竣工结算的审核工作,能有效地控制工程造价,节省建设项目资金,保证建筑产品的价值真实性。     

Robust estimation of the mean vector for high-dimensional data set using robust clustering

The first step in statistical analysis is the parameter estimation. In multivariate analysis, one of the parameters of interest to be estimated is the mean vector. In multivariate statistical analysis, it is usually assumed that the data come from a multivariate normal distribution. In this situation, the maximum likelihood estimator (MLE), that is, the sample mean vector, is the best estimator. However, when outliers exist in the data, the use of sample mean vector will result in poor estimation. So, other estimators which are robust to the existence of outliers should be used. The most popular robust multivariate estimator for estimating the mean vector is S-estimator with desirable properties. However, computing this estimator requires the use of a robust estimate of mean vector as a starting point. Usually minimum volume ellipsoid (MVE) is used as a starting point in computing S-estimator. For high-dimensional data computing, the MVE takes too much time. In some cases, this time is so large that the existing computers cannot perform the computation. In addition to the computation time, for high-dimensional data set the MVE method is not precise. In this paper, a robust starting point for S-estimator based on robust clustering is proposed which could be used for estimating the mean vector of the high-dimensional data. The performance of the proposed estimator in the presence of outliers is studied and the results indicate that the proposed estimator performs precisely and much better than some of the existing robust estimators for high-dimensional data.     

《词源》卷上是伪托之书——元起善斋抄本《词源》卷上真伪考

通过考察二卷本《词源》的流传著录情况及比对今传元起善斋抄本《词源》与《事林广记》等类书的关系,认为关于词曲音乐资料的所谓《词源》卷上非张炎原书,而是后人通过对《事林广记》等类书的过录节抄,置于张炎《词源》之上的伪托之作。二卷本《词源》卷下乃张炎《词源》原书。