计轴自动站间闭塞结合电路的改进

针对计轴自动站间闭塞结合电路中存在区间设备故障不关闭出发信号的联锁失效安全隐患进行了成因分析,提出了电路改进方案,并在现场设备中进行实际应用,证明了其可行性。     

放大器输入电路的噪声分析

对放大器输入电路的噪声从理论上进行一定分析，得到与噪声大小相关的函数关系。据此指出减小这种噪声的相应途径和给出选择小噪声放大器的有效依据。     

The convergence of inflation rates in the EU-12 area: A distribution dynamics approach

This paper provides an assessment of Euro area inflation dynamics based on the distribution dynamics approach. It is found that raw series and trends have converged, although the convergence process has not been constant over time. Inflation cycles still lack of synchronization over short time horizons. In search for an economic explanation for cyclical inflation dynamics, the paper suggests that country-specific labor market institutions are likely to affect inflation outcomes above all in high inflation countries. Moreover, the cyclical inflation divergence arises from output fluctuations.     

可生物降解包装材料的性能和应用研究

目前,可生物降解包装材料已经成为替代传统合成材料的重要环保型材料。早期,已有研究人员将可生物降解聚合物应用于包装材料领域。近年来,随着环境问题,原油储量压力的加剧和普通消费者的偏爱,生物基及可生物降解聚合物得到进一步发展。本文介绍了可生物降解包装材料的发展过程,重点综述了材料的性能和应用。     

模糊综合评价方法在MD膜驱油项目后评价中的应用

结合MD膜驱油项目自身的特点,从经济、社会、环境、技术这四个方面建立指标体系,并运用模糊综合评价法理论进行了MD膜驱油项目后评价研究,旨在通过总结经验教训不断提高项目管理者的决策水平,为下一个周期项目实施制定投资决策和投资计划服务。     

Influence of celebrity involvement on place attachment: role of destination image in film tourism

The importance of place attachment in film tourism has been recognized by scholars and practitioners. However, despite its predominance in the destination management industry, several unaddressed issues remain in film tourism. Therefore, this study is conducted to investigate the relationships between celebrity involvement, destination image, and place attachment. Data obtained from 301 purposeful film tourists indicated that celebrity involvement was positively associated with place attachment. Moreover, cognitive image and affective image partially mediated the relationship between celebrity involvement and place attachment. In other words, cognitive image and affective image represent crucial psychological processes that explain how celebrity involvement influences place attachment. Furthermore, compared with the affective image, the cognitive image had a more crucial mediating role in the celebrity fan–film destination attachment relationship. Theoretical and managerial implications are also provided.     

双输入RC陷波滤波器概述

制作给定参数的微型化电感有很大的加工困难,从而迫使人们进行了大量的旨在用替代法获得频率选择特性的研究。努力方向有两个:试图发现能被用于频率选择的材料和元件的物理现象;试图设计出仅用有源器件、电阻、电容即可完成该功能的电路。     

用可编程逻辑器件设计PC串行通信接口

本文了使用ispLSI(in-system programmable large scale integration)器件设计的PC串行通信接口，给出了电路设计思想及具体电路结构。该电路可用于双机或一对多机通信之中。     

《电子线路》的讲课艺术

高等教育教师来源多样化，非师范类高校毕业教师自身的科研能力、业务素质很强但未系统学习教育学和教育心理学而从事教育职业，是目前高校普遍存在的现状。作者从自身的教学经验出发，结合教学实践，论述了电子类的教学艺术和讲课思路一般方式方法，并以《电子线路》为例具体讲述了讲课的艺术，以此期望提高非师范类高校毕业教师的教学水平。     

Litigation Risk and Corporate Voluntary Disclosure: Evidence from Two Quasi-Natural Experiments

Abstract

We examine the effect of litigation risk on corporate voluntary disclosure using two quasi-natural experiments, which have substantial and opposing impacts on the litigation risk of firms headquartered in the Ninth Circuit. We find that firms in the Ninth Circuit decrease (increase) the quantity and quality of their voluntary disclosure, relative to control firms, when their litigation risk is lowered (elevated). The pre-treatment test shows an indistinguishable trend between treatment and control firms. A battery of robustness checks indicates that our results are not driven by alternative explanations. We hypothesize and find that the impact of litigation risk is more pronounced when firms have bad news and that firms are more likely to preempt bad news through voluntary disclosures when litigation risk is elevated. Overall, results from both experiments suggest that litigation risk causally increases corporate voluntary disclosure.