LIN总线维修技术特性

局域互联网络(LIN)是一类串行数据通信的网络通信线,LIN的应用大大减少了车辆电气线路的使用数量,降低了电气线路的故障发生率。本文主要从传输方式、信号特性方面介绍LIN总线特性及LIN总线诊断特性。     

The evolving 5G case study in United States unilateral spectrum planning and policy

This paper tracks increasingly aggressive initiatives by the United States government to reallocate spectrum on an expedited and unilateral basis well before conclusion of inter-governmental coordination. Rather than embrace the customary commitment to achieve consensus on global spectrum allocations at the International Telecommunication Union (“ITU”), the Federal Communications Commission (“FCC”) has auctioned off large blocks of frequencies for the next generation (“5G”) of wireless services.The FCC might have framed its first 5G auction, reassigning Ultra High Frequency (“UHF”) spectrum, as a one-time deviation from compliance with long standing, intergovernmental coordination procedures. These frequencies have ideal signal propagation characteristics and the Commission could use financial incentives—unavailable in most nations—to expedite “repacking” by incumbent broadcasters willing to move, share or abandon spectrum in exchange for ample financial compensation. However, the FCC has continued to auction off 5G spectrum on grounds that it must find ways to abate an acute shortage of wireless bandwidth and doing so will regain or maintain global leadership in wireless technologies. This paper offers a critical rebuke to unilateral spectrum management, because the short-term benefits expected by the U. S. government likely will be offset by countervailing harms to 5G manufacturers, carriers and consumers. The paper tracks fractious preparation for the ITU's 2019 World Radio Conference by the U.S. delegation and the mixed record achieved there. Additionally, the paper explains how injecting trade, industrial policy and national security issues at the ITU can trigger more delays and disputes, including possible retaliation by nations displeased with U.S. efforts to subvert traditional technology optimization goals.A worst case scenario has the ITU deadlocked and unable to reach closure on “mission critical” spectrum planning issues at World Radio Conferences, convened every four years. The paper concludes that costs and likely challenges to the efficacy and legitimacy of the ITU will reduce the benefits accruing from the FCC's unilateral, spectrum planning campaign.     

电信行业竞争力评价指标体系构建及实证分析——以漳州电信行业为例

以漳州电信行业为研究对象,从规模实力、市场开拓能力、盈利能力、运营能力四个方面,运用层次分析法（AHP）确定指标权重,通过无量纲化处理,建立综合评价模型;通过漳州与福州、厦门、泉州、莆田、龙岩、宁德、三明、南平八大区域电信行业竞争力评价的实证分析,找出制约漳州电信行业发展的瓶颈,提出了提升漳州电信行业市场竞争力的措施。     

电信业技术变迁的演化博弈分析

本文利用演化博弈理论的最新研究成果,构造了一个电信技术市场模仿者动态博弈模型来考察电信业技术变迁过程。研究结果表明:在电信业技术变迁过程中,可能出现非效率技术"锁定",也可能出现非效率技术被更有效率的技术取代;电信技术"锁定"在一定条件下是可以被破解的,政府可通过对更有效率的技术的研发提供补贴或降低其交易成本等措施来打破非效率技术"锁定",使得电信业技术变迁向更有效的方向演进。     

Forecasting VoWLAN technology for the Taiwan mobile telecommunication industry

Disruptive innovation is always a great challenge to the management of incumbent firms, especially in fast-changing industries. In this study, scenarios were developed to facilitate strategic decision-making by incumbent mobile telecommunications firms that confront the threats of disruptive technology of voice over wireless local area network (VoWLAN). Combining various possible outcomes of uncertain conditions and strategic alternatives available to the incumbent firms, six scenarios were developed: incremental evolution, disruptive evolution, cost deterrence, fierce competition, market pre-emption and market convergence. The results show that a passive ‘do-nothing’ strategy by incumbent firms leads to failure if the disruptive technology is inevitable. However, firms can slow the pace of disruptive technology by applying a price-cut strategy and enjoy several years of profits in the process. Industrial insights and strategic implications obtained from all the scenarios are discussed.     

通信设备制造业全要素生产率增长与技术进步

本文基于通信设备制造业23家上市公司2001～2006年的面板数据,利用非参数DEA模型的Malmquist指数,测算了通信设备制造业的全要素生产效率和技术进步效率。结果表明,通信设备制造业的全要素生产效率主要来源于规模效率而不是技术进步效率,并且技术效率一直是退步的。在此基础上。构建了影响我国通信设备制造业全要素生产效率和技术进步效率的面板数据模型,检验了影响因素的方向和程度。实证结果表明,通信设备制造业还处于规模报酬递增阶段,增加公司规模可以促进生产效率的提高,公司的研发创新能力和员工的受教育程度对公司全要素生产率和技术进步效率有着重要的正向作用,提高员工的受教育程度和加强公司创新能力应该是公司下一步经营的重点。     

电信业移动通话业务的竞争分析及监管对策

文章从分析电信业移动通话业务的竞争状况入手,指出了现阶段该业务竞争所具有的积极意义及存在的问题,并在最后提出了市场对监管的挑战及相应的应对措施和改革重点。     

关于打破电信市场垄断的思考

改革开放以来,政府对打破电信垄断进行了一系列的改革探索,但电信业的垄断阴影犹存。要打破 电信垄断,必须建立健全相应的法律制度,重构电信管制制度,深化电信市场准入制度的改革,建立以市场 为基础的价格竞争机制。     

通信企业的营销创新

通信企业的营销手段不断丰富,营销能力不断增强。但由于计划经济时代遗留下来的痼疾,我国通信营销的总体水平仍不高,营销方法落后的弊端逐渐暴露,成为阻碍我国通信业发展的一大障碍,因此通信企业需要引入营销创新机制来激发企业活力。文中主要解答以下问题:为什么通信企业需要营销创新?什么是通信企业的营销创新?如何进行通信企业营销创新?文章力图对通信企业营销创新发展之路进行有益的探索。