基于ZigBee技术的高校智能楼宇照明控制系统设计

在对无线智能照明系统的特点进行简单介绍的基础上,提出了一种基于Zig Bee无线网络技术的高校智能建筑灯光控制系统的实现。硬件设计基于支持Zig Bee的So C芯片CC2530,软件设计基于Z-Stack协议栈。该系统具有上电后自组网的功能,用户可以控制协调器通过路由器向路由器节点上的任意一个终端设备发送信号,终端设备收到信号后,执行对照明设备的控制。     

The Theoretical Ground for Public Relations Practice and Ethics: A Koehnian Analysis

Public relations literature laments the lack of a theoretical base for the practice and ethics of public relations. Drawing primarily upon Koehn (The Ground of Professional Ethics, 1994) and Hutton (Public Relations Review, 1999), this paper proposes such a theoretical ground.The paper adopts Hutton's assertion that "the central organizing theme of public relations theory and practice" is relationships(Hutton, 1999, p. 209). It also relies upon Koehn (1994) to provide a theoretical discussion of the nature of professions, and the ground upon which professional ethics and public trust in the professions are based. It concludes, from a Koehnian perspective, that for public relations to move from the expertise and contractual models of practice into a covenantal model as a profession worthy of public trust, the field must devote itself to a defined human good (relationships), and must be grounded in a public pledge to serve this good.     

如何做好GSM网络的维护与优化工作

GSM网络的维护工作是一个循环闭合的过程,其设计、工程建设、维护、优化工作的循环往复才能铸就优秀的无线网络。所以只有切实注重每个环节,才能把网络建设好、维护好。文章介绍了影响GSM网络的维护的因素,维护的措施,并阐述了维护和优化GSM网络的意义。     

高等院校无线数字化校园建设

随着移动技术的发展及无线设备的普及,大量利用手机或其他移动设备接入网络的时代已经来临。高校网络应用无线化已经成为信息化建设的发展趋势。     

通信机房改善谐波环境措施研究

本文通过大量可信的实际通信电源机房数据,进行系统的科学的分析统计,得出了具有一定实际参考价值的结论,并结合电力谐波整改的实际情况提出了改善通信机房电力谐波环境的措施。     

Is tourism just another staple? A new perspective on tourism in remote regions

According to recent research, countries may have a positive image from a tourism perspective, but they may be seen as lacking from an economic or political viewpoint. As governments and destination management organisations spend large sums of money in promoting tourist attractions, the question of whether these activities also influence other aspects of a country's image becomes relevant. The objective of the research is to determine the effect of tourism promotions on the image of the country and that of the destination as two separate concepts, in the case of Israel, a country subject to continuous conflicts. A 2?×?2 quasi-experimental design is utilised to investigate the influence of tourism promotional brochures. Additionally, a comparative perspective is used to determine whether people from diverse countries and backgrounds may be affected differently by the same information. The findings confirm that tourism brochures influence not only the image of the destination, but also that of the country. These effects are found to be different for respondents from the two different countries compared. The article focuses on understanding how tourism communication strategies may also be used to improve the image of a country, with potential benefits for international marketing and international relations.     

抽样定理的System View仿真与实现

通过分析SystemView仿真软件的优势及主要的功能模块库和应用领域,重点通过通信系统中的抽样定理实例介绍了该软件的使用方法及注意事项。最后,总结该软件的教学应用效果及对相关课程教学的借鉴作用,特别适合通信系统的仿真与设计。     

高等院校无线局域网络应用探讨

随着信息技术的高速发展,高等院校加速了数字化校园的建设,无线网络之一的无线局城网WLAN成为数字化校园建设的重要一部分。阐述了无线局城网的体系结构,分析了无线局城网的特点,以及在高校构建无线局城网的优势,无线局城网在高校数字化校园建设中必将起到重要的作用。     

电子电气电路的隔离技术浅探

文章探讨了电气隔离的两类主要技术即光隔离或磁隔离应用。对于光隔离主要谈了光电耦合器技术应用;对于磁隔离主要谈了变压器应用。     

Consumer engagement with brands on social network sites: A cross-cultural comparison of China and the USA

To advance theoretical understanding of consumer engagement on social media, this cross-cultural study evaluates how culture influences consumers’ engagement levels and activities on brand pages of social network sites. It further evaluates the underlying motivations and engagement mechanisms in two culturally distinct countries, China and the USA. Specifically, social media dependency, parasocial interaction, and community identification are examined as the key antecedents of consumer-brand engagement. The results confirm the effects of the proposed antecedents and reveal both cultural differences and similarities between Chinese and American consumers’ engagement with brand pages on social network sites.