具有实时语音播报的超声波测距测速仪设计

超声波凭借自身指向性强、能量消耗缓慢,以及在介质中传播距离远等优势,进而广泛应用于距离测量。与其它检测方式相比,超声波作为一种非接触式的检测方式,在检测过程中不受光线、被测对象颜色等因素的影响和制约。本文介绍了超声波测距测速的原理和方法。以STC89C52RC单片机作为主控制器,用定时器实现超声波驱动信号的发射,用动态扫描法实现测量结果的12864液晶显示和ISD4004语音播报。     

职场抱怨源对知识型员工创新绩效的影响机制研究

知识型员工的创新绩效是移动互联时代企业获取竞争优势的关键要素。本研究探讨了组织环境中的职场抱怨源对知识型员工创新绩效的影响效应和作用机制。研究发现：职场抱怨源的“与同事关系”、“管理规范化因素”和“物理环境”维度通过负向影响员工建言,而抑制创新绩效;另外,“工作负荷”维度正向影响创新绩效。研究还揭示,相比自我隐藏倾向低的员工,与同事关系不和谐对高自我隐藏倾向知识型员工的建言和创新绩效有更显著的负向影响。最后讨论了研究的理论价值和实践启示。     

职业成长对员工建言行为的影响

基于员工利益视角,整合社会交换理论与关系人口学理论,并探索性地引入员工与主管前摄性人格匹配,可深入研究职业成长对员工建言行为的作用机理。运用多元线性回归分析多个组织的335份员工-主管配对样本数据,结果表明：职业成长对员工建言行为具有正向影响,员工对组织的责任感知在职业成长与建言行为间起到中介作用,员工-主管前摄性人格匹配不仅正向调节职业成长对建言行为的作用,而且正向调节责任感知对建言行为的作用。     

基于实际使用量的移动通信语音业务定价

基于网络运营的电信行业是典型的高固定成本、低边际成本行业。因此如果参考边际成本来制定价格,就会造成固定成本难以收回。细分定价策略是电信运营商目前普遍采用的主要资费策略之一,而根据使用量细分定价是对用户细分定价的进一步提升。从运营商利润最大化的角度出发,按照用户每月实际使用量分摊成本的思想,确定不同使用量下所对应的价格,与其他学者已有研究相比,其定价模型体现了平均成本及用户使用量的影响,消费者可以通过对自己月使用量的估计值选择适合的语音产品。     

User voice and complaints as drivers of innovation in public services

User voice and complaints can serve as important inputs to innovation in public services. User knowledge can be harnessed to provide insights and ideas that prompt more effective service responses and add value to service delivery. However, the mechanisms for harnessing user voice and complaints are often not fully understood, and their potential is often underdeveloped. This paper elaborates a conceptual framework which maps the processes by which user voice and complaints might prompt effective public service innovation. Six practical real-world examples are then presented and analysed to illuminate discussion of some critical success factors for consumer-knowledge-enabled innovation.     

Information but not consultation: exploring employee involvement in SMEs

Most research on employee involvement (EI) has focused on large or ‘mainstream’ organizations. By adopting those schemes which ‘appear’ to work well in larger organizations, smaller firms assume there will be enhanced employee commitment beyond formal contractual requirements. The main question in this paper is whether EI schemes designed by management will suffice under the 2004 Information and Consultation of Employees (ICE) Regulations. The paper focuses on SMEs which tend to favour informal and direct EI, and it remains unclear how these methods will be played out under the new regulatory environment. Evidence from four case studies is presented here and it suggests that the ICE Regulations impose new challenges for smaller firms given their tendency to provide information rather than consult with employees. It also appears organizational factors, workplace relations history and the way processes are implemented at enterprise level may be far more important than size itself.     

基于“PC＋软件”的数字语音实验室构建及维护技术

随着计算机技术和网络技术的飞速发展，语音实验室已经向数字化、网络化、自主化、开放式发展，成为“一室多用”的纯软件数字语音实验室。其优势是有专业化的师生课堂交互系统，能提供听、说、读、写全方位训练，性价比高。“PC＋软件”数字语音实验室的构建要遵循先进性、实用性、可靠性、经济性、灵活性、扩充性、智能化和规范性原则，在星型网络拓扑结构基础上，建立课堂教学平台、个性化自主学习平台、考试平台、备课平台和管理平台，采用一键Ghost做好服务器和教师机的备份、病毒防范和学生机的维护3种方案进行日常管理和维护。     

英语时、态、体及其语法教学

英语语法是英语学习过程中的一个重点,同时也是一个难点,而英语语法在很多情况下与英语的“时”、“体”、“态”密切相关。了解英语“时”“体”“态”的基本概念和两种“时”、两种“体”和两种“态”的基本构成,对掌握英语语法中常见的时态和语态以及非谓语动词,尤其是不定式和分词结构的构成规则有很大的帮助。     

The influence of cultural tightness–looseness,religiosity, and the institutional environment on tax evasion behaviour: A cross-country study

We examine whether the strength of norms and tolerance for deviations play a role in explaining cross-country differences in tax evasion (TEVA). We also investigate the effects of religiosity, legal enforcement, voice and accountability, and the stability of political systems on TEVA across 48 countries over the period 1997–2018. Results show that the higher the voice and accountability and the lower the degree of cultural tightness–looseness, the rule of law, and political stability, the higher the degree of TEVA across nations. The results are important for policymakers to assess the likelihood of TEVA from a holistic perspective.