记录纵向输出中的汉字处理

本文针对中文管理系统中记录纵向输出的特点，提出了记录纵向输出中的通用汉字处理方法，给出了实现算法。     

Asymptotics for the Hirsch Index

Abstract. The last decade methods for quantifying the research output of individual researchers have become quite popular in academic policy making. The h‐index (or Hirsch index) constitutes an interesting combined bibliometric volume/impact indicator that has attracted a lot of attention recently. It is now a common indicator, available for instance on the Web of Science. In this article, we establish the asymptotic normality of the empirical h‐index. The rate of convergence is non‐standard: , where f is the density of the citation distribution and n is the number of publications of a researcher. In case that the citations follow a Pareto‐type respectively a Weibull‐type distribution as defined in extreme value theory, our general result specializes well to results that are useful for practical purposes such as the construction of confidence intervals and pairwise comparisons for the h‐index. A simulation study for the Pareto‐type case shows that the asymptotic theory works well for moderate sample sizes already.     

一种基于DEA模型的粗集决策方法

将DEA方法引入粗集理论中,提出一种可解决“具有多个决策属性特征”的多投入、多产出问题的方法,建立一种基于DEA的粗集决策模型,并通过研究中国生产力水平的效率问题来验证模型的合理性和有效性,为人们进行科学的决策提供了一种新的思想和方法。     

Evaluating technical efficiency of human capital formation in the Italian university: Evidence from Florence

This paper models the human capital formation in the Italian university and utilizes a measure of technical efficiency to estimate the output-efficiency of human capital formation in the University of Florence, by using Data Envelopment Analysis (DEA) on a selected set of inputs and outputs. It uses the Program Evaluation (PE) procedure as well, in an attempt to attribute shares of the variation in efficiency to factors that are beyond the control and factors that are under the control of the graduates and faculties. The authors thank two anonymous referees for their valuable comments.     

International Business Cycle Asymmetry and Time Irreversible Nonlinearities

Using tests of time reversibility, this paper provides further statistical evidence on the long-standing conjecture in economics concerning the potentially asymmetric behaviour of output over the expansionary and contractionary phases of the business cycle. A particular advantage of this approach is that it provides a discriminating test that is instructive as to whether any asymmetries detected are due to asymmetric shocks to a linear model, or an underlying non-linear model with symmetric shocks, and in the latter case is informative as to the potential form of that nonlinear model. Using a long span of international per capita output growth data, the asymmetry detected is overwhelmingly consistent with the long standing perception that the output business cycle is characterized by steeper recessions and longer more gentle expansions, but the evidence for this form of business cycle asymmetry is weaker in the data adjusted for the influence of outliers associated with wars and other extreme events. Statistically significant time irreversibility is reported for the output growth rates of almost all of the countries considered in the full sample data, and there is evidence that this time irreversibility is of a form implying an underlying nonlinear model with symmetrically distributed innovations for 15 of the 22 countries considered. However, the time irreversibility test results for the outlier-trimmed full sample data reveal significant time irreversibility in output growth for around one half of the countries considered, predominantly in Northern Europe and North America, and of a form implying a nonlinear underlying model in only a further half of those cases.     

高等教育与我国地区经济发展关系的实证研究——从人力资本存量的角度

本文从人力资本存量的角度考察了2004年我国高等教育与地区经济发展之间的关系。研究发现:(1)高等教育与当地经济发展存在高度正相关,但地理位置因素也会影响到其强弱。(2)高等教育对中部地区经济增长的促进作用最明显,京津及东部沿海地区次之,西部地区最低。(3)总体来看,高等教育对经济增长贡献仍然偏低。因此,应进一步加大高等教育投入,提高其对经济增长贡献。     

用8—羟基喹啉化学修饰电极测定人体痕量铊

本文用强吸附法研制了8—羟基喹啉化学修饰电极,并将其应用于人体痕量铊的分析。该方法具有较高的灵敏度和较好的选择性。检出下限为5×10-11mol·l-1,实测人体样品铊的回收率为94±44%,变异系数CV=46%。     

Modeling Imbalanced Economic Recovery Following a Natural Disaster Using Input‐Output Analysis

Input‐output analysis is frequently used in studies of large‐scale weather‐related (e.g., Hurricanes and flooding) disruption of a regional economy. The economy after a sudden catastrophe shows a multitude of imbalances with respect to demand and production and may take months or years to recover. However, there is no consensus about how the economy recovers. This article presents a theoretical route map for imbalanced economic recovery called dynamic inequalities. Subsequently, it is applied to a hypothetical postdisaster economic scenario of flooding in London around the year 2020 to assess the influence of future shocks to a regional economy and suggest adaptation measures. Economic projections are produced by a macro econometric model and used as baseline conditions. The results suggest that London's economy would recover over approximately 70 months by applying a proportional rationing scheme under the assumption of initial 50% labor loss (with full recovery in six months), 40% initial loss to service sectors, and 10–30% initial loss to other sectors. The results also suggest that imbalance will be the norm during the postdisaster period of economic recovery even though balance may occur temporarily. Model sensitivity analysis suggests that a proportional rationing scheme may be an effective strategy to apply during postdisaster economic reconstruction, and that policies in transportation recovery and in health care are essential for effective postdisaster economic recovery.     

政策转移的若干理论问题探究

政策转移是全球化时代各国公共政策制定领域的普遍现象。西方政治学界对政策转移的研究始于20世纪90年代，在政策转移的衡量标准、分析框架等方面英国学者进行了探讨。但总体来看，政策转移的研究仍存在诸多盲点。我国国内对政策转移的研究目前刚刚起步，许多问题都处于模糊状态，特别是政策转移的基本理论问题亟待探讨，诸如政策转移的内涵与衡量标准，政策转移的发生前提与条件，政策转移的要素、类型与途径，政策转移的性质与特点，政策转移的功能与作用等都需要深入研究。     

毫米波高增益大功率收发组件研制

提出了一种可用于雷达的毫米波收发组件的实现方案。组件包括两个几乎完全相同的接收通道和一个发射通道,接收通道采用两次混频将毫米波信号变为50MHz中频,而发射通道则采用两次上变频将50MHz信号变为毫米波频段的信号发射出去。该文分析了收发组件的设计原理,讨论了组件方案选择,并给出了测试结果。收发组件的各项技术指标基本达到设计要求:在10MHz的工作带宽内,连续波发射功率达1W,接收机噪声系数小于4.5dB,接收通道的净增益超过100dB。