安全气囊系统(SRS)的组成与诊断方法

安全气囊(SRS)系统在现代轿车中基本上是作为标准装备,它是一种被动安全保护系统,但它必须与座椅安全带正确配合使用,在汽车发生碰撞时为减轻驾驶员和乘员受伤程度或为其提供有效的保护。目前,很多维修与检测人员对安全气囊(SRS)理解不够,在对安全气囊系统监测和维修时,没有根据说明书,违规操作,使得安全气囊(SRS)意外打开而造成严重事故。     

The determinants of business contribution to the 2030 Agenda: Introducing the SDG Reporting Score

Within the 2030 Agenda, the United Nations have explicitly required that the Member States introduce within their jurisdictions new forms of regulations about non-financial reporting practices. The aim of this paper is to investigate the effects related to the transposition of Directive 2014/95/EU by analyzing firm-level, governance-level, and report-level determinants of business reporting on the Sustainable Development Goals (SDGs). To conduct such an analysis, this study defines and introduces the SDG Reporting Score (SRS)—a qualitative proxy representing a firm orientation toward SDG reporting. The study sample includes the non-financial reports of 153 Italian Public Interest Entities. The results show a positive relationship between a firm's SRS and various determinants, such as the presence of independent directors on the board, expertise with non-financial reporting, and length of the report. Finally, the highest levels of SRS are achieved by firms operating in environmental sensitive sectors.     

Using student response systems in the accounting classroom: Strengths,strategies and limitations

A Student Response System (SRS), often referred to as a “clicker,” enables students to individually answer instructor questions on a real-time basis using individual mobile devices, and have the aggregate responses displayed as feedback to the class at the instructor’s discretion. A mobile device can be a proprietary, vendor-specific remote, or a multi-purpose item such as a smartphone or computer. While SRSs have been used in education for some time, we perceive the adoption rate in accounting classes as still being quite low. This paper is a “how to” and “why” guide for accounting faculty who are considering using SRSs, and for experienced users who seek to refine or expand their SRS use.     

A quasi-experimental assessment of interactive student response systems on student confidence,effort, and course performance

The interactive student response system (SRS), commonly referred to as ‘clickers,’ is an alternative learning method that has the potential to improve student course (i.e., quiz/examination) performance. Prior SRS studies both within accounting and other academic disciplines have found conflicting results as to its influence on student course performance. This quasi-experimental study re-examines the relationship between the use of an SRS and course performance. We also investigate how using SRS influences student confidence and time spent studying outside of class. Unlike prior SRS related studies, we tested both our SRS class and our control class (with no SRS) in the same academic semester with the same instructor to provide a higher degree of experimental control. Through doing so, we compared the benefit of immediate feedback achieved by SRS to the delayed feedback of traditional assessment formats. Higher in-class performance on multiple-choice quiz items was found for students using SRS versus those who did not use SRS; however, no significant differences in examination performance or overall course performance were noted between the two groups. Students using SRS reported being more confident in their abilities and spent less time preparing for the course outside of class, while maintaining similar overall course performance when compared to those who did not use the SRS. We conclude our study by providing areas of meaningful future research related to the use of SRS.     

电子技术在汽车安全领域的应用

本文着重介绍了电子技术介入的汽车安全产品,及其对汽车的安全性能产生巨大的影响。电子技术的广泛应用,使汽车的安全性能得到质的提升。     

LTE中一种改进的基于探测参考信号的定时估计算法

研究了LTE系统中探测参考信号(SRS)的定时同步方法。由于基本的滑动相关算法和传统的后向搜索算法不能有效地消除相关过程中旁瓣峰值的影响,不适用于SRS的定时同步。因此,针对SRS的时频结构特点,提出一种改进的后向搜索算法。该方法通过将本地序列与接收序列在时域上相关得到定时度量函数,并重新定义门限值,通过结合门限和新的搜索技术来确定第1径的位置,从而得到正确的定时采样点。仿真结果表明,所提方法的估计性能优于滑动相关算法和传统的后向搜索算法,有效地消除了旁瓣峰值的影响,提高了SRS的正确定时概率。相比传统的后向搜索算法,所提方法的估计性能提高了6倍左右。     

基于EDFA+FRA的增益平坦补偿

采用光子转换理论和数值分析方法，研究了采用DCF光纤的喇曼放大器和掺铒光纤放大器组成的混合放大器在DWDM系统中的应用。通过对喇曼光纤放大器的光纤长度、泵浦功率的选择，使得混合放大器的总增益达到一定的平坦度；并分析设计了增益均衡器，让混合放大器最后的总增益达到更高的平坦度。