对PSC新《大纲》“朗读”项调整的思考

2003年颁发的《普通话水平测试大纲》对1994年的旧《大纲》进行了调整，调整后的新《大纲》无论在朗读作品的选取上，还是在评分项和分值的设置上都更趋科学、合理，增加了测试的效度、信度和可操作性。但和旧《大纲》的“方言语调”相比，新《大纲》的“语调偏误”评分项还是未能摆脱由于理论缺失而导致的评分项前后矛盾和实际操作混乱的尴尬。     

直扩/跳频测控信号伪码跟踪抗干扰性能分析

研究了直扩/跳频测控信号伪码跟踪的抗干扰性能,通过加权处理使其归结为分析 干扰条件下直扩信号伪码跟踪性能。采用鉴相曲线的过零点偏移表示干扰对跟踪的影响,推 导了伪码跟踪的最大干扰误差表达式。以单音信号作为输入干扰,对最大干扰误差进行了理 论分析,得出了音频干扰对伪码跟踪的影响规律。仿真结果表明,理论分析与仿真结果吻合 较好,验证了理论分析的正确性。     

Time-varying managerial overconfidence and corporate debt maturity structure

We examine the impact of managerial overconfidence on corporate debt maturity. We build upon the argument that managerial overconfidence is likely to mitigate the underinvestment problem, which is often the major concern for long-term debt investors. Within this context, we hypothesise that managerial overconfidence increases debt maturity. Our empirical evidence, based on time-varying measures of overconfidence derived from computational linguistic analysis and directors’ dealings in their own companies’ shares, supports this hypothesis. Specifically, we find that the changes in both first person singular pronouns and optimistic tone are positively related to the change in debt maturity. Moreover, we find that the insider trading-based overconfidence of CEO, who is most likely to influence investment decision and thus the underinvestment problem, has a stronger impact on debt maturity than the overconfidence of other directors (e.g. CFO). Overall, our study provides initial evidence for a positive overconfidence-debt maturity relation via overconfidence mitigating the agency cost of long-term debt.     

汉语语法轻声初探

汉语语法轻声的提出缘于轻声本身的语法作用.从语法层面上分析,汉语语法轻声属功能性轻声,主要由词义虚化而产生,并在汉语语句中具有语法标记、区别词性和词义、辨别句法和句义以及节奏表达等语法功能.     

多站制CW雷达目标动态模拟器设计

针对多站制连续波（CW）雷达工作特点,设计了一种CW雷达目标动态模拟器,满足多站连续 波测 量系统动态模拟联试的需求。采用高性能CPCI工控机作为模拟器硬件平台,信号处理单元 以CPCI板卡为载体,模拟控制信息依据弹道数据生成。模拟器通过控制测距信号的时间延迟 ,实现目标距离变化的模拟;通过载波频移控制,实现目标速度的模拟;通过数控衰减器控 制模拟信号的幅度,实现目标信号强弱的模拟。通过多站制测量系统动态模拟联试,验证了 模拟器的有效性和距离与速度的相关性。     

数字相关相位估值法在卫星测距系统中的应用

<正> 亚洲金融危机发生至今已经一年有余。由于世界经济一体化格局的形成和明晰化,金融危机的全球化影响已是一个客观事实。一年余来,中国在应和消弭亚洲金融危机的影响方面作出了极大的努力,并已赢得广泛赞誉。这一方面是中国作为担负世界重要责任之大国的应尽义务,另一方面亦是树立国际形象、展现大国道义和风范的历史机遇。     

基于英语作品翻译的“口吻”保持与再现研究

文学翻译中再现原作的艺术形象和艺术风格至关重要,本文以大量的翻译案例,探讨了英语作品翻译的“口吻”保持与再现。     

论语言符号音义结合的任意性和理据性原则

语言起源时期的独字句,什么样的音与什么样的义相结合究竟有没有一种可遵循的基本原则?经过长期的深入研究,人们对此做出了明确的回答,认为语言符号音义结合的基本原则有两条:一是任意性,二是理据性。二者之间并非不可调和,而是并行不悖,相辅相成的。理据性以任意性为生存条件,任意性又受到理据性的有力制约。二者的互动关系决定了他们共同成为语言符号的同等重要的、辩证统一的自组织原则。     

The Effect of Team Affective Tone on Team Performance: The Roles of Team Identification and Team Cooperation

Affective tones abound in work teams. Drawing on the affect infusion model and social identity theory, this study proposes that team affective tone is related to team performance indirectly through team identification and team cooperation. Data from 141 hybrid‐virtual teams drawn from high‐tech companies in Taiwan generally supported our model. Specifically, positive affective tone is positively associated—while negative affective tone is negatively associated—with both team identification and team cooperation; team identification is positively associated with team cooperation; and team cooperation is positively associated with team performance. Managerial implications and limitations are discussed. © 2016 Wiley Periodicals, Inc.     

一种提高恶劣环境中电台话音质量的方法

针对恶劣环境中电台话音质量差这一难题,提出了一种有效的解决方法。首先在最小值控制的递归平均Ⅱ型（MCRA-2）算法基础上,提出了一种改进的MCRA-2算法。该算法采用自适应平滑参数和双检测门限,能有效减小音乐噪声,提高噪声估计准确性;然后将该噪声估计算法与对数最小均方误差估计器相结合,实现话音降噪,提高恶劣环境下电台话音质量;最后利用噪声估计结果和降噪后的话音信号,采用信噪比判决算法,自适应估计静噪门限,实现自适应静噪,进一步提高话音舒适度。实验表明,采用该方法的电台在大噪声、强干扰等恶劣环境中使用时,能明显改善话音质量,有效减轻收听者听觉疲劳。