一种16倍采样的Gardner定时同步方法

DVB-S2X(The second generation Digital Video Broadcasting by Satellite Extensions)标准给出了高至256阶的APSK(Amplitude Phase Shift Keying)调制方式，对解调端的符号定时同步、帧同步和载波恢复都提出了更高的要求。结合DVB-S2X技术手册的建议，在经典的基于4倍符号速率采样的Gardner定时同步的基础上，提出了一种在定时同步环路前端加预滤波器并将原来的单路插值扩展到4路插值的基于16倍采样的同步方法。介绍了该方法的思想和结构并进行了仿真实验，结果表明该方法相比于经典Gardner方法有更好的误码性能，在高阶调制的情况下表现尤为突出。     

谈网络时代的高校学生思想政治教育

网络时代为高校学生思想政治教育带来了新的机遇和挑战,必须建立健全思想政治教育网络,提高网络 技能,加强上网引导、监控和管理,从而充分利用网络,进一步加强高校学生思想政治教育工作。     

我国近代银行组织制度探讨

19世纪末,随着西方金融理论的传播、中国民族工业的发展,中国金融业开始了现代化进程,出现了资本主义性质的现代银行,创建了以股份公司制为框架的银行组织制度。因受国情的影响,中国银行的组织制度呈现出与西方不同的发展道路,具有独特的内容与特征。这种组织制度,对新中国银行体系产生了重大影响,并对我国现今银行体制改革,尤其是完善股份制资本组织形式,构建有效的内部控制制度及优化分支行模式有着重要的历史借鉴和现实意义。     

谈思想政治工作载体必须与时俱进

思想政治工作是我们党的优良传统和政治优势。在建设有中国特色社会主义市场经济的新形势下,思想政治工作的载体必须与时俱进,才能起到鼓舞、引导、激发人们内在动力的作用,才会有凝聚力、战斗力、感染力和穿透力。     

基于时代变迁的连锁经营机理演变解析

从工业经济时代到知识经济时代,连锁经营机理随之演变：从以规模化扩张实现成本降低、以专业化管理提高效率降低费用以实现规模经济,转向基于知识的经济性通过知识复制实现知识资产产权效益、规模经济、降低运营成本、品牌效应、竞争优势以及连锁体系价值链利益均衡。基于机理演变,知识经济时代的连锁经营随之创新。     

近代中国科技落后之文化探究

从经济文化、政治文化、思想文化的角度分析了中国近代科技发展落后的原因,并探讨了其对于当今加强文化建设、促进科教兴国战略的借鉴意义。     

Close form pricing formulas for Coupon Cancellable CoCos

Contingent Convertibles (“CoCos”) are contingent capital instruments which convert into shares, or have a principal write down, if a trigger event takes place. CoCos exhibit the undesirable so-called death-spiral effect: by actively hedging the equity risk, investors can (unintentionally) force the conversion by making the share price deteriorate and eventually trigger the conversion.In this paper we introduce and analyse Coupon Cancellable CoCos (“CoCa CoCos”), a new type of CoCo where coupons can be cancelled during the lifetime of the note. We provide closed-form pricing formulas for CoCa CoCos, we study the impact of coupon cancellations in the price of the bond and we show that death-spiral effect is reduced.     

Resource use in general anaesthesia: a comparison of practice in Germany,France and the UK

Summary

This study reports the results of a study of anaesthetic resources used before, during and after various surgical procedures performed in the United Kingdom, Germany and France. A total of 1787 patients undergoing general anaesthesia for daycase knee arthroscopy, daycase laparoscopic gynaecological procedures, inpatient major non-gynaecological abdominal surgery or inpatient knee arthroscopy in a range of hospital settings were included in the study. The objective was to compare the use of anaesthetic agents, adjunct drugs and times spent in the various stages of surgery and recovery. An audit of the incidence of emesis in the postoperative recovery room and on the hospital ward was also undertaken. Results showed that the UK had the shortest median procedure times for induction, surgery and recovery. The pattern of drug use was generally similar for the main classes of anaesthetic agents and adjunct drugs, although the use of specific drugs in each class differed from country to country. Between 7% and 10% of patients suffered from one or more episodes of emesis. Practice differences between countries were apparent and differences in resource use indicate considerable scope for institutional cost savings on anaesthesia-related activities, beyond drug acquisition costs, in both France and Germany compared with the UK.     

谈新形势下保卫工作的与时俱“变”

新世纪新阶段,人类社会面临的发展机遇前所未有,面对的挑战也前所未有。改革开放30多年,尤其是加入WTO以后,我国发生了翻天覆地的变化。但是我国正处于并将长期处于社会主义初级阶段,人民日益增长的物质文化需要同落后的社会生产之间的矛盾仍然是我国社会的主要矛盾,统筹兼顾各方面利益任务艰巨而繁重。因此,对保卫工作来说,如何与时俱"变"是一个崭新的课题,值得研究。     

High-speed rail transport valuation and conjecture shocks

In this paper, we derive the optimal investment policy in a high-speed rail transport (HSR) project. We assume that the source of uncertainty comes from the annual demand, and that it follows a geometric Brownian motion with jumps of random magnitude, occurring in random times, according to a Poisson process. We assess the impact of these shocks on the demand threshold, along with the investment opportunity value and option to differ. We consider several distributions for these jumps, and we compare with the no-jumps case. Numerical results are presented, showing the importance of assumptions about the underlying stochastic process.