影响时分割乘法器准确度的主要因素分析

对广泛用于电能计量，功率测量等仪器装置中的时分割乘法器进行了研究，阐述了其电路的工作原理，并就影响电路输出精度的主要因素时分割周期T的变化作了详细分析，结果表明：若选用性能优良的运放等元器件并选取适当在数值，则时分割乘法器的准确度可控制在0.2%以内。     

关注公众预期提高货币供应量对经济的作用

对货币供应量与经济增长之间的关系以及货币供应机制进行了分析，据此得出结论：货币供应量在短期内可影响一国经济，所以控制货币供应量是调节经济的手段之一。但是由于影响货币供应量的因素不易控制和预测，使得货币供应量的控制和对经济的调节变得困难。所以应考虑引入预期指标来提高货币供应量调节经济的效果。     

企业规划与信息系统规划战略一致性实证研究

以战略匹配模型(SAM) 及其在企业活动中的过程模型为研究对象,探讨了企业规划(BP) 和信息系统规划( ISP) 战略一致性程度与企业内外环境、企业所采取的竞争战略方向、ISP 的战 略地位以及IT 对企业业绩的贡献等因素间的关系,并运用中国企业数据进行了实证分析. 结 果表明,企业高层的战略规划意识以及利用IT 整合企业资源的能力与BP2ISP 战略一致性程度 和企业业绩密切相关,是企业获取竞争优势的重要因素.     

New calibration estimator based on two auxiliary variables in stratified sampling

In recent years, calibration estimation has become an important field of research in survey sampling. This paper proposes a new calibration estimator for the population mean in the presence of two auxiliary variables in stratified sampling. The theory of new calibration estimator is given and optimum calibration weights are derived. A simulation study is carried out to performance of the proposed calibration estimator over other existing calibration estimators. The results reveal that the proposed calibration estimators are more efficient than other existing calibration estimators in stratified sampling.     

Lagrange multiplier unit root test in the presence of a break in the innovation variance

We show that the Lagrange multiplier (LM) unit root test exhibits size distortions when a break in the innovation variance exists but is ignored. We develop a modified LM unit root test that is based on a generalized least-squares transformation of the original series. The asymptotic null distribution of the new modified LM unit root test is derived. Finite-sample simulation evidence shows that the modified LM unit root test maintains its size and has reasonable power against the trend stationary alternative.     

From the Digital Divide to the Connectivity Dividend Difference: A Connectivity Capital Perspective*

The access divide was once the basic form of the digital divide. The development of Internet infrastructure has narrowed the access divide and increased application coverage, but it has also touched off a connectivity dividend difference. Taking the online market as an example, we examine the sources of the dividend difference and the factors influencing it with in a connectivity framework. We found that the narrowing of the access divide has resulted in enhanced connectivity and platform development, giving people the chance to benefit from transforming the various assets in which they have previously invested into differentiated compound connectivity capital. In the course, the scale and rate of the conversion are affected by two multiplier effects and especially by online platforms. The process is ultimately expressed in the dividend difference.     

A Diagnostic Test for Normality Within the Power Exponential Family

This article develops the locally uniformly most powerful unbiased Lagrange multiplier test of normality of regression disturbances within the family of power exponential distributions. The small sample power properties of the test are compared in a Monte Carlo study with 6 well-known tests across 12 alternative nonnormal distributions. In addition, the finite sample power properties for nonnormal alternatives within the power exponential family are summarized by estimating response surfaces. The results suggest that the proposed text is computationally convenient and possesses relatively attractive power properties even against alternatives outside the power exponential family.     

电子货币对货币定义及乘数的影响

随着计算机和通讯技术的发展,以电子信息为传递媒介的电子货币引入对金融产生巨大影响。文章简要介绍了传统的货币定义、货币乘数及其影响因素、电子货币的三种形态。然后分别讨论以这三种形态的电子货币对货币定义及货币乘数的影响。电子货币的引入,使传统的货币定义和货币乘数存在理论基础将发生根本性动摇,本文拟就在传统理论基础上,就前两种形态电子货币对货币定义、货币乘数影响作了数理性分析,对难以基于传统理论基础上纯粹电子货币（未来的发展方向）作了前瞻性预测分析。      

价格传导机制及其对农村居民收入分配的影响——基于新疆SAM的实证分析

本研究以静态价值型的模型为背景,基于SAM的乘数分析和结构化路径分析原理,对价格传导如何影响新疆农村居民的收入分配进行实证研究。研究结论表明：部门的价格变动对农村居民消费价格有显著的影响：在价格的传导过程中,有些是通过直接路径传导,有些是通过多条间接路径的传递对农村居民消费价格指数（CPI）和收入分配发生作用,因而导致农村居民实际生活成本发生变化,最终使农村居民的实际收入水平也发生变化。     

传播议程经济的乘数效应

传媒经济的实质是议程经济,只有议程经济可以联系传媒传受即供需双方,实现传媒经济均衡。议程经济发挥作用的机制是传播的乘数效应,在传统媒体和新媒体融合的生态下,媒介生产方式体现出全新的特征。信息的倍增效果产生的正反作用对传播的议程经济的取得提出了新的挑战,值得高度重视,有必要深入研究以网络信息传播为代表的新媒体的规制原则和方法,才能确保传媒经济和社会双重效益的实现。