手机微博技术-任务匹配的影响因素及其对用户采纳行为的影响——基于可用性视角的实证研究

基于可用性研究和任务-技术匹配理论,用手机微博系统的可用性替代任务-技术匹配模型中的技术特征,构建了任务-技术匹配度影响用户手机微博使用意向的模型,并实证检验了影响手机微博技术-任务匹配度的因素,以及这种匹配对用户的手机微博采纳行为的影响。研究结果显示:手机微博系统的可用性和用户自身的个人特征都对任务-技术匹配度有显著的正向影响;任务-技术匹配度也对手机用户的微博使用意向有显著的积极影响。     

高职院校《移动通信》双语教学的实践与探索--以广东农工商职业技术学院为例

双语教学是高职院校教学语言改革的一项新举措,是培养高素质的双语技能人才的重要途径。以广东农工商职业技术学院通信技术专业的专业核心课《移动通信》为例,分析了高职院校《移动通信》课程开设双语教学的可行性,从教材选取、教学方法、实践环节和考核制度四个方面介绍该课程双语教学的实践情况,并提出相应的改进建议,希望能给其他高职院校对该课程实施双语教学提供一定的启发与借鉴。     

Are consumers forward looking? Evidence from used iPhones

This study examines the impact of planned obsolescence – the introduction of new models to make existing models obsolete – on secondary markets for mobile phones. Using data of over 320,000 used iPhones listings on Thailand’s largest online marketplace, we document that iPhone prices decrease with age, around 2.8–3.2% for each passing month. We find no evidence that the price decline accelerates after launches of new models (i.e. obsolescence), lending support to the view that consumer in durable goods markets are rational and forward looking.     

Identifying the structure of knowledge networks in the US mobile ecosystems: patent citation analysis

With the emergence of smartphones, the paradigm of the mobile ecosystem has changed rapidly. In particular, global mobile firms focus on technological competition when jostling for market position in recognition of the strategic need to secure a strong mobile platform. In this paper, we analyse the network structure of technological knowledge flows in mobile ecosystems using US patent citation information. We find that two subsectors, platform providers and application and software providers, are at the centre of knowledge exchange activity and play a brokerage role as the key knowledge mediator. Then, we categorise mobile firms into five different groups based on the patterns of their network centrality: knowledge keystone players, knowledge-distributing mediators, knowledge-absorbing mediators, catch-up players, and pure knowledge receivers. The categorisation of firms demonstrates that knowledge flows in the mobile industry converge towards a few leading firms, and such patterns are shaping the mobile ecosystem with respect to technological knowledge. The firms categorised as catch-up players have played a brokerage role within their group, while the firms categorised as knowledge keystone players play a brokerage role across different groups.     

Empirical Evidence on the Relationship between Mobile Termination Rates and Firms' Profits

The theoretical literature on mobile termination rates (MTRs) is inconclusive on how the level of MTRs affects overall consumer charges and firms' profits. We show that when firms offer bundles with fixed included usage – a tariff structure that has become more common in recent years – an identical change in all MTRs does not affect firms' retail prices or profits. We use a panel dataset from saturated European markets to estimate the effect of MTRs on mobile operators' profits. As predicted by the theoretical model, we cannot reject the fact that firms' profits are unaffected by an identical change in all MTRs.     

高校绿色手机文化建设研究

建设绿色手机文化有利于构建和谐校园和辐射高校先进文化。针对当前手机文化具有削弱主流意识形态,影响校园文化建设和大学生心智发展等负效应,高校要加强引导,优化风气;全社会要提高认识,齐抓共管;大学生要端正思想,文明践行,共同提高绿色手机文化建设成效。     

移动互联网使用对女性非农就业和收入的影响研究

移动互联网等数字技术的发展对实现充分就业具有重要作用,促进女性就业和创业是实现充分就业的必要前提。本文基于 2019 年中国家庭金融调查数据,研究了移动互联网的使用对女性非农就业、收入和性别工资差距的影响。研究发现,移动互联网使用促进了女性非农就业,显著缩小了与男性的就业差距。使用 Heckman 两步法和工具变量法克服内生性问题后的结果表明,移动互联网使用显著促进了女性收入的提高,且这种促进作用偏向于女性,缩小了与男性的收入差距。替换被解释变量后上述结论依然稳健。异质性分析发现,相比于从事受雇工作,移动互联网使用对女性创业的促进作用更强;但对已经就业的女性,移动互联网使用显著提升了受雇者的收入,未能显著增加创业者的收入。结论认为,为持续提高女性就业和收入,需要进一步加强移动互联网基础设施建设、转变传统的性别观念以及增强互联网对人力资本投资的作用。     

The evolution of mobile communications in Europe: The transition from the second to the third generation

This paper analyses the evolution of the mobile communications industry in the European Union. The research focuses its interest on the different roles played by the regulator in Europe and in other regions of the world (mainly the US). The diffusion of GSM was extraordinarily fast in Europe, mainly due to the adoption of a unified standard from inception. This rapid diffusion has resulted in an important competitive advantage for European operators. Interestingly, while the regulator acted similarly in the case of UMTS, the development of the latter has faced many problems and, presently, its diffusion is still low (about 5% in the EU). The paper also offers basic information on market structure that may be useful for extracting some preliminary conclusions about the degree of rivalry within the industry and the differences that can be observed between European countries.     

新形势下加强对企业流动党员进行教育管理的途径初探

随着改革开放的深入和市场经济的不断发展，企业外出务工经商的党员越来越多，流动范围越来越广，传统的党员教育管理模式已不适应新形势、新任务的要求，迫切需要寻找有效的流动党员教育管理途径。文章对新形势下加强企业流动党员教育管理的途径进行了探索，提出了一些具有建设性的对策措施。