我国上市公司股权激励公告日的时机选择

本文选取了2008年1月1日至2012年12月31日间首次进行股权激励草案公告的245家A股上市公司作为研究对象,运用事件研究法对上市公司公告股权激励草案前后的超额收益情况进行检验.研究发现:即使不考虑股权激励本身带来的短期市场效应,草案公告日也更可能出现在股价低点,说明管理层会对草案公告的时机进行选择.进一步的研究则表明管理层是利用了自身对于公司季度盈余报告的信息优势来进行草案公告日的选择.     

毛细管黏度计自动检定/校准系统的研制

利用自动控温系统、测温电桥、自动计时系统和计算机控制平台组成一种毛细管黏度计自动检定/校准系统,该系统具有自动吸液、自动计时以及数据自动处理功能,可用于标准黏度液定值和毛细管黏度计检定/校准。     

High Quality Factor Q and Low Timing Jitter from MLLD Using Optical Injection

采用１０ＧＨｚ基准时钟光和１０Ｇｂｉｔ／ｓ的数据脉冲信号光注入到锁模激光二极管，降低了周期抖动，当注入功率为－５ｄＢｍ，在基准时钟光波长等于锁模激光二极管的光波长时，获得的最小抖动为０．２５ｐｓ，采用混合锁模激光二极管，在注入功率为＋２７ｄＢｍ时，其Ｑ值达３０００．     

彩色PDP荧光粉的劣化研究

彩色等离子体平板显示器件已经成为信息显示领域重要发展方向之一， 荧光粉对PDP器件的性能起着决定的作用。PDP中的荧光粉是通过丝网印刷的方法涂敷的。荧光粉在制成丝网印刷用荧光粉浆料过程中，以及制成PDP器件的过程中，都可能使荧光粉的性能降低，这就是工序劣化。在制成PDP器件后，荧光粉的性能还会随着使用时间的延长进一步降低，这就是历时劣化。本文分析了荧光粉的工序劣化和历时劣化产生的原因，设计制作了单色PDP试验屏，采用CRT ColorAnalyzer（CA－100）测量了荧光粉在PDP器件中的色坐标，并与荧光粉生产厂家提供的色坐标进行比较，从而获得了荧光粉的工序劣化和历时劣化值。试验结果表明，绿粉（Zn2SiO4:Mn^2 ）和蓝粉（BaMgAl10O17:Eu^2 ）的工序劣化较严重，蓝粉的历时劣化最严重，其y坐标增大10％，x坐标增大5％。我们认为改进荧光粉浆料成份和配比，从而降低荧光粉的烧结温度以及采用比表面积大的荧光粉颗粒，有助于改善工序劣化；改进MgO的性能，提高其溅射能力以及采用新的驱动方法以避免荧光粉遭受离子轰击，将有助于改善历时劣化。     

Periodic-Group-Delay Dispersion Compensation Reduces Collision-Induced Timing Shifts in Dispersion-Managed Quasilinear Systems

Periodic-group-delay (PGD) dispersion-compensation modules have recently been proposed as mechanisms to alleviate collision-induced timing shifts in dispersion-managed (DM) systems. We obtain frequency and timing shifts in quasilinear DM systems with PGDs and show that significant reductions are achieved when even a small fraction of the total dispersion is compensated by PGDs.__________Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 144, No. 1, pp. 6–13, July, 2005.     

交叉口黄色信号灯和全红时间的改进计算

在道路交叉口正确设置左转车辆的黄色信号灯和全红(所有方向信号灯均为红色，在必要时设置)的时间长度，能够提高交叉口的效率和安全．本文分析了影响2种信号周期设置的各种因素，以及2种信号时间的计算机理，在计算模型中引入了更多的影响因素，使得模型更加合理和符合交叉口的实际情况．同时，对于一些难以量化的人为因素，例如驾驶员的驾驶特性，引入了3个参数，并且根据大量实验数据，给出了这些参数在各种交叉口环境下的参考值．经过这些研究，黄色信号灯和全红时长的计算模型得到了改进，提高了交叉口交通的通行效率和安全．     

Randomized strategy equilibrium in the action commitment game with costs of leading

We investigate a two-player action commitment game where one simultaneous-move and two sequential-move pure strategy equilibria exist when the cost of leading is zero, while the simultaneous-move outcome is not an equilibrium when the leading cost is small positive. We show that this discontinuity disappears if we consider randomized strategy equilibria. We investigate a price competition model and show that randomized strategy equilibria exist and any of them converges to the Bertrand equilibrium when the leading cost converges to zero.     

Kurtosis-Based Symbol Timing and Carrier Phase/Frequency Tracking

Kurtosis is known to be effective at estimating signal timing and carrier phase offset when the processing is performed in a “burst mode,” that is, operating on a block of received signal in an offline fashion. In this paper, kurtosis-based estimation is extended to provide tracking of timing and carrier phase, and frequency offsets. The algorithm is compared with conventional PLL-type timing/phase estimation and shown to be superior in terms of speed of convergence, with comparable variance in the matched filter output symbols.     

Earnouts in mergers and acquisitions: A game-theoretic option pricing approach

This paper presents a valuation approach for merger and acquisition (M&A) deals employing contingent earnouts. It is argued that these transactions have option-like features, and the paper uses a game-theoretic option approach to model the value of such claims. More specifically, the paper examines the impact of uncertainty on the optimal timing of M&A using earnouts, and it also investigates the impact of uncertainty on the terms of the earnout. Optimal earnout and initial payment combinations are endogenously derived from the model, and testable hypotheses are developed. The theoretical contribution of this paper is a dynamic decision-making model of the invest-to-learn option generated upon investment in an acquisition. The paper also offers practical implications for the design of acquisitions employing earnouts.     

基于速度干涉仪的冲击波精密调速实验技术研究

冲击波精密调速技术是惯性约束聚变研究的关键技术之一. 针对冲击波精密调速诊断技术的要求, 以神光III原型上脉宽为3 ns的两台阶整形激光脉冲为源, 用石英晶体做窗口材料, 模拟了双冲击在石英晶体中传输和追赶的过程. 利用两发典型双冲击波调速的实验数据, 验证了神光III原型具有的精密调速能力. 实验结果表明, 在驱动源、 靶和诊断系统参数一致的条件下, 两发实验获得的实验结果中两次冲击出现的时刻, 冲击波速度都很一致. 通过精细分析, 发现在两次冲击交会的时刻, 干涉条纹清晰度和完整性变化最大, 最终数据处理获得的冲击波速度偏差也最大. 同时, 在二次冲击的冲击波速度有较大增加的条件下, 并没有观察到冲击波阵面的反射率的明显增加. 本文的实验结果作为一个数据依据, 为全面开展冲击波调速实验提供了有效的方法.