党务公开理论探析

逐步推进党务公开,对于构建和谐社会、发展党内民主、提高党的执政能力、加强党的监督具有十分重大的现实意义。当前,推行党务公开需处理好党内公开与党外公开、公开内容与公开形式、党务公开和党务保密、党务公开与政务公开的关系。而克服思想障碍、明确公开内容、创新公开形式、健全公开机制,则是稳步推进党务公开的几个重要环节。     

基于块间关系的鲁棒视频水印算法设计

为了提高视频文件中水印算法的透明性和鲁棒性,在此提出了一种基于数据块间关系的水印嵌入算法,该方法以数据块之间的特定关系表示水印的比特值,从而避免了将水印值直观地嵌入原始的视频文件中。在介绍该水印算法的详细设计过程后,给出了水印的嵌入过程和提取过程,最后对设计的水印算法进行了透明性和鲁棒性的测试,测试结果表明该算法在高比特率的情况下具有较高的透明性。对于大部分常见的水印攻击方法具有较强的鲁棒性,但对于降低视频图像分辨率的攻击方法,水印的鲁棒性还有待提高。     

The influence of transparency on budget forecast deviations in municipal governments

This paper analyzes the impact of transparency on fiscal performance. Our sample considers the 100 largest Spanish municipalities for the years 2008, 2009, 2010, 2012, and 2014. The results show that the level of municipal transparency influences budget forecast deviations in tax revenues and current expenditures. On the one hand, less transparent municipalities overestimate their revenues, allowing them to provide more public services without an immediate increase in taxes. On the other, these local governments, which are aware of the overestimation of their revenues, may spend less than they budgeted. More transparent municipalities, meanwhile, seem to be more prudent in their revenue estimations, since they underestimate their revenues, meaning they can spend more than projected. Our results also show that the behavior of politicians is influenced by the phase of the electoral cycle in which they find themselves, with politicians overestimating expenditures in the year before election.     

Do monetary policy transparency and central bank communication reduce interest rate disagreement?

Yes. This study produces evidence that monetary policy transparency and communication policy of the Bank of England have information content in reducing disagreement about interest rate forecasts. Different from most extant studies employing the transparency index derived from official documents of the central banks, this study extends the literature by using a recently developed market-based monetary transparency index. Moreover, this study analyzes forecast disagreement in a multivariate perspective based on survey data of short- and long-term rates over short and long horizons. This study characterizes several patterns on forecast disagreement related to maturities of interest rates, forecast horizons, recessions, forward guidance, credibility, transparency, and communication policy. Interestingly, disagreement among the Monetary Policy Committee in policy rate decisions is associated with lower disagreement among professional forecasters on interest rate outlook, whereas neither announcement of changes in policy rates nor publication of inflation reports affects forecast disagreement. These results have important implications for monetary policymakers in managing market expectations of interest rates.     

压缩真空中原子系统的瞬时光学响应

通过数值求解密度矩阵非对角元,研究了压缩真空对原子系统瞬时光学性质的影响.研究结果表明,原子系统的光谱振荡振幅、瞬时吸收和瞬时响应的时间都显著地依赖于压缩真空,但压缩真空与探测光的相对相位对吸收谱的稳态值没有影响.此外,可以通过调节压缩真空的平均光子数改变原子系统的粒子数布居.     

基于电磁感应透明的量子信息存储研究

量子信息是量子力学与信息科学交叉的前沿领域,如何对量子信息进行存储和处理是人们研究的核心问题之一.采用数值模拟方法研究基于电磁感应透明技术存储光量子信息,并考虑了信号场与原子系统的耦合系数、原予弛豫率和控制光场强弱变化等对存储过程的影响.结果表明,存储后输出的信号脉冲强度随着耦合系数的增大而增大、随着原子驰豫率的增大而减小、随着控制光强的增大而增大.此外,控制光的强弱也对信号脉冲的存储位置产生影响.     

Production of ultra-transparent glass-ceramics via controlled crystallization of nanocrystals in the glassy matrix of LAST

Microstructural variation in glass-ceramics encompasses the range from nanocrystalline transparent materials to microcrystalline tough materials. In this investigation, the crystallization process was controlled for the development of ultra transparent Li₂O-Al₂O₃-SiO₂ glass-ceramics containing TiO₂ as a nucleating agent (LAST). Results of UV-Vis absorption spectra were compared with the expected theoretical values calculated by the Rayleigh scattering method for the determination of ultra transparency. Results of the investigation illustrate that the control of crystallization increases the range of ultra transparency by the reduction of crystal size and their uniformity in the glassy matrix. Last but not the least, the optimized samples are ultra transparent approximately in the whole light wavelengths.     

养鱼池“水呼吸”耗氧速率的研究

测定了同一水样在不同水温下、不同水样在相同水温下及不同水样在不同水温下的“水呼吸”耗氧速率．并在此基础上采用回归分析，研究了主养链鱼和鳙鱼的池塘的“水呼吸”耗氧速率与水温、化学耗氧量和透明度三者的相关性．结果表明：“水呼吸”耗氧速率与水温呈指数关系，与化学耗氧量呈直线关系，与透明度的关系受水色的影响．同时建立了多元非线性回归方程     

非线性色散波及孤立子在光学中的应用

本文介绍了孤立子的概念和历史以及它在光学中的应用     

金刚石薄膜光学透过性能的研究

研究了金刚石薄膜的厚度、表面粗糙度及其成分对金刚石薄膜光学透过率的影响,采用AFM观察金刚石膜的表面形貌并测试其表面粗糙度Ra值;用XPS仪测试了金刚石膜成分;用UV-365分光光度仪测试了光学透过率.结果表明:表面粗糙度是影响金刚石薄膜光学透过率的重要因素,其降低一倍,光学透过率增加两倍多.要提高金刚石薄膜的光学透过率,应大力降低表面粗糙度.