基于当前中国经济的货币政策

当前中国经济运行中存在固定资产投资增长过快 ,建设规模过大 ;货币发行量和贷款规模增长过快 ;通货膨胀压力增大等问题。本文从货币政策角度出发 ,认为应该确定以物价稳定和经济发展为货币政策目标 ,将货币供应量作为我国当前货币政策的中介指标 ,以传统的三大货币政策为辅 ,以利率和窗口指导为主来控制我国的货币供应量 ,优化贷款结构 ,实现扩大内需政策的结构性调整 ,树立和落实科学的发展观。     

Does the Conditional CAPM Work? Evidence from the Istanbul Stock Exchange

Using a sample of common stocks traded on the Istanbul Stock Exchange from February 1997 to April 2008, we test whether the conditional capital asset pricing model (CAPM) accurately prices assets. In our empirical analysis, we closely follow the methodology introduced in Lewellen and Nagel (2006). Our results show that the conditional CAPM fares no better than the static counterpart in pricing assets. Although market betas do vary significantly over time, the intertemporal variation is not large enough to drive average conditional alphas to zero.     

Central Bank's Retained Profits and Discount Windows: A Bureaucratic Organization's Discretion-Seeking Hypothesis

A recent study using data on seventy-one countries revealed that the central bank's retained profits serve as financial leverage for its discretion to choose the discount window, which tends to confer more benefits to bureaucrats than other monetary instruments. As an extension, we investigate the case of Korea. The Bank of Korea introduced the Profits-Retaining Clause (PRC) in 1962, elucidating two purposes: to reduce the monetary base and to secure credibility. Upon showing that these claims are not quite convincing, we confirm that the PRC probably served bureaucratic interests. In particular, this paper, using time-series data, supports the aforementioned cross-country study.     

基于DEA视窗分析与Malmquist指数的安徽环境效率动态变化研究——以安徽17个城市2004-2009年数据为样本

运用DEA视窗分析模型测度了考虑污染排放约束在内的安徽17个主要城市区域环境效率动态变化趋势，进而利用Malmquist生产率指数的测算及其分解探究安徽环境效率变动原因。得出结论：安徽环境效率区域发展不平衡，但区域差异有所收敛。技术进步制约安徽区域环境效率提升，技术效率成为安徽区域环境效率提升的源泉。     

一种低复杂度的LDPC码迭代译码算法

在LDPC码的译码算法中，和积算法性能最优但复杂性较高，最小和算法实现简单但性能与和积算法相差较多。针对这一性能与复杂度的矛盾，带有修正项的最小和算法成为研究的热点问题。文中基于一种性能与和积算法接近的修正最小和算法进行研究，对修正项的修正方式进行了简化，简化后的算法在性能上与和积算法仍非常接近，实现复杂度却比原修正最小和算法有明显的降低。     

Equity with Warrants in Private Placements

We examine private equity with warrant (unit) placements and compare them with private equity placements. Firms making unit placements are smaller, younger, riskier, and characterized by higher information asymmetry than equity‐placing firms. Furthermore, unit‐placing firms experience good pre‐placement stock performance; however, their post‐placement performance is poor and worse than that of equity‐placing firms. We also find that very few of the placed warrants are in the money at expiration. Our results are consistent with the window of opportunity hypothesis and the theory that warrants are especially desirable to a clientele of overoptimistic investors.     

完全响应CPFSK的基带预滤波技术

提出用基带预滤波技术改善完全响应连续相位频移键控(CPFSK)信号的综合性能,这一技术在等效Eb/N0增益与信号带宽方面进行了合理折衷.数值分析表明,有两类窗族预滤波方案,当参数β值选择较合适时,能实现包括RC、SRC、HCS在内的几乎所有基带预滤波.这两类窗族分别是Kaiser窗族和幂次窗族基带预滤波.经过计算机仿真,得出4CPFSK和8CPFSK条件下,基带预滤波技术的等效Eb/N0增益与带宽的数值关系.这一关系对基带预滤波技术在工程上的应用具有指导意义.     

中国经济发展方式与人口红利关系辨析

近年来热烈讨论的人口红利,对我国来说更接近于一种＂人口机会窗口＂。它可以通过增加劳动力投入,提高储蓄率等渠道推动经济增长。但这种经济增长并非一定是现代经济增长。中国的实践证明,粗放式低层次地利用＂人口机会窗口＂,走传统工业化道路已经遇到严峻挑战。印度自20世纪80年代起采取新的经济发展模式,积极培养与积累人力资本,发展高新技术产业,值得中国参考。应深层次充分挖掘人力资源优势,积累人力资本,走出一条依靠科技进步和劳动者素质提高的发展道路,真正分享人口红利。     

烟囱施工控制的重点及常见质量问题的防控

烟囱作为高耸构筑物,其中心桩的测量控制、大体积砼基础的施工、筒壁中心线垂直度的控制及滑升、调径、模板收分和抽拔均是施工控制的重点。在筒壁滑模施工中易出现筒壁混凝土坍落、混凝土筒壁表面存在局部裂缝及滑模施工中易出现偏扭等现象,施工如果控制不利,将造成筒体倾斜、筒身混凝土强度降低等质量问题,严重的可能造成质量事故。     

塑料窗生产企业质量管理体系的建立和实施要点

由于塑料窗是建筑工程中使用的一种十分重要的建筑材料,塑料窗生产企业大多为小型企业,其质量管理体系较为薄弱,产品质量水平较低,为提高产品质量,根据多年的审核经验,对塑料窗生产企业质量管理体系的建立和实施要点作探讨。