略论经济赔偿补偿因素对量刑的影响

经济赔偿、补偿因素是指犯罪人犯罪后,犯罪人或其亲友,用经济方法对被害人所遭受的损失、损害予以赔偿或补偿。这种赔偿性、补偿性经济因素,通常在量刑时作为酌定情节诸因素中的一种重要因素加以考虑,从而影响到对被告人的量刑。     

产业结构、空间溢出与农村减贫

在对我国省域产业结构合理化与高度化水平进行测度的基础上,构建空间计量经济模型,设置邻接权重、地理权重和经济权重三种空间关联模式,从空间维度实证检验了产业结构优化升级对农村贫困影响的直接效应与溢出效应。研究发现：我国省域农村贫困率具有显著的空间相关性和空间异质性,在空间分布上呈现出“高-高”与“低-低”集聚的特征;产业结构的合理化不仅能促进本地区农村减贫,还可以通过空间溢出效应促进邻近地区农村减贫;产业结构的高度化也有助于本地区和相邻地区的农村减贫。提出应加快产业结构的优化升级,实现产业融合发展和区域协调发展,促进农村减贫。     

Frontier production functions

This paper summarizes the literature on frontier production and cost functions and on their relationship to the problem of efficiency measurement.     

交叉口信号配时的人工蚂蚁优化

针对我国城市道路交叉口的实际情况，在改进信号配时模型的基础上，采用一种新型随机搜索思想——人工蚂蚁优化算法来解决交叉口的信号配时问题．仿真试验表明，所得结果优于经典方法，在相同的信号周期内，降低了交叉口的总延误时间和停车次数，提高了通行能力．     

An Exact Corrected Log-Likelihood Function for Cox's Proportional Hazards Model under Measurement Error and Some Extensions

Abstract.  This paper studies Cox's proportional hazards model under covariate measurement error. Nakamura's [ Biometrika 77 (1990) 127] methodology of corrected log-likelihood will be applied to the so-called Breslow likelihood, which is, in the absence of measurement error, equivalent to partial likelihood. For a general error model with possibly heteroscedastic and non-normal additive measurement error, corrected estimators of the regression parameter as well as of the baseline hazard rate are obtained. The estimators proposed by Nakamura [Biometrics 48 (1992) 829], Kong et al. [ Scand. J. Statist. 25 (1998) 573] and Kong & Gu [ Statistica Sinica 9 (1999) 953] are re-established in the special cases considered there. This sheds new light on these estimators and justifies them as exact corrected score estimators. Finally, the method will be extended to some variants of the Cox model.     

基于FrFT和子空间正交的LFM信号参数估计

基于分数阶Fourier变换和子空间正交性,提出了一种低信噪比下线性调频信号检测与参数估计方法。讨论过程中将线性调频信号通过适当的分数阶Fourier变换得到一个单频复正弦信号,在此基础上,利用信号子空间与噪声子空间的正交性处理其正弦信号,再对线性调频信号的检测和参数估计转化为函数极值求解;最后,利用计算机模拟证实了方法的有效性。     

Three estimators for the poisson regression model with measurement errors

We consider two consistent estimators for the parameters of the linear predictor in the Poisson regression model, where the covariate is measured with errors. The measurement errors are assumed to be normally distributed with known error variance σ _u ² . The SQS estimator, based on a conditional mean-variance model, takes the distribution of the latent covariate into account, and this is here assumed to be a normal distribution. The CS estimator, based on a corrected score function, does not use the distribution of the latent covariate. Nevertheless, for small σ _u ² , both estimators have identical asymptotic covariance matrices up to the order of σ _u ² . We also compare the consistent estimators to the naive estimator, which is based on replacing the latent covariate with its (erroneously) measured counterpart. The naive estimator is biased, but has a smaller covariance matrix than the consistent estimators (at least up to the order of σ _u ² ).     

用于声空化效应检测的电导仪

基于对声空化效应的特点及其检测原理的研究,设计了声空化效应检测的核心仪器——电导仪,该电导仪采用V/F参量变换电路,消除了极化作用所造成的附加误差,并具备快速、准确、自动误差补偿等特点。     

CVA还是EVA:企业业绩评价方法的选择

探讨了最新的企业业绩评价方法——现金增加值(CVA),介绍了几个与现金增加值相关的概念,如战略投资、非战略投资等,提出了计算现金增加值的基本模型。经济增加值是现行的比较流行的企业业绩评价指标体系,但是它本身存在着许多不足。通过举例研究,对比现金增加值和经济增加值对企业业绩评价带来的不同影响,提出应该选取现金增加值评价指标体系改进现有的经济增加值方法。     

磁粉温度稳定性测量装置及测量方法

我们利用冲击差值补偿法,建立了一台测量磁粉温度稳定性的装置.该装置的灵敏度为2.1×10~4/mm,测量重复性为8×10~5.我们使用该装置测量了γ-Fe_2O_3等几种磁粉在使用温度范围附近的可逆和不可逆变化.包钴和掺钴的γ-Fe_2O_3磁粉的变化规律与报道的相符.对于普通的γ-Fe_2O_3,当温度从20℃上外到80℃时,剩余磁感应强度 Br 减少了5%;在这个温度范围内经五次循环以后,剩余磁感应强度随温度的变化是可逆的,其温度系数-5×10~4/℃.