移动通信行业物流外包供应商评价模型的实证研究

通过运用层次分析法(AHP)对移动通信行业物流外包供应商评价模型的相应因素进行权重量化,为移动通信企业选择合适的供应商提供数字化定量模型依据。文中选取北京移动通信行业一家公司的典型物流外包项目—账单集中制作全外包服务作为案例,通过运用这一数字化定量模型实现对参评供应商的企业实力进行了评价和选择(即评价因素得分*权重=最终评价),并通过现场考察的方式对中标供应商的效果进行了跟踪评价。     

Mobile Termination: What is the “Right” Charge?*

The regulation of fixed-to-mobile (F2M) termination charges has become increasingly important in Europe, Australia, and New Zealand under the Calling Party Pays principle. In the absence of any regulation, mobile operators have an incentive to set F2M termination charges “too high”. We show that the setting of the optimal F2M termination charges depends on the significance of network externalities, the intensity of competition in the mobile sector, and the distribution of customer preferences. We also discuss the merits of possible remedies which are not very intrusive. Tommaso Valletti has advised the European Commission and the UK regulator (OFCOM) on mobile termination and Frontier Economics has acted as advisor to a number of mobile operators on the same issue. The views expressed in this paper are those of the authors alone. We thank Carlo Cambini, Yulia Kossykh, participants to the 15th Biennial International Telecommunications Society Conference, the 3rd International Conference on Applied Infrastructure Research in Berlin, for their comments. We also thank the editor Michael Crew and two anonymous referees for many suggestions that have greatly improved the paper.     

试析媒介融合背景下二维码对广告业的影响

在媒介融合的时代背景下,手机广告作为一种新兴的广告形式日益引起人们广泛关注。相对于传统媒体广告,二维码广告具有受众卷入程度高、传播内容立体化、较强的伴随性和互动性等特点。本文从精确测定广告效果、精准定位消费者、拓宽广告营销渠道、改变广告传播方式等四方面探讨了二维码对广告业的影响,并预测随着互联网的发展、智能手机的普及、3G服务的渗透,手机直接访问互联网将越来越便利,二维码这一新型广告形式将大有作为。     

一种新的基于MR的移动网络越区覆盖判别算法

针对移动网络系统中普遍存在的越区覆盖问题,提出了一种新的低成本的越区覆盖判 别的新算法,从而提高网络的性能指标。该算法通过在Iub接口中实时采集信令MR帧,并对 其MR帧进行同步解析获取其帧结构中的相关数据,在考虑用户切换掉话的多种场景下提出了 基于邻区判别的越区覆盖侦测方案。实验结果显示该方法可以有效解决越区覆盖问题。     

小件电子产品回收物流网络模型与实证研究——以废弃手机为例

每年我国都产生大量的小件电子废弃物,小件电子废弃物的资源化回收利用成为一个新的环境问题.本文以废弃手机为例,首先做了一个废弃手机回收的物流网络设计,然后建立了废弃手机回收的物流模型,最后通过利用VC++6.0软件编程求解对广西地区的废弃手机回收问题进行了实证分析,根据软件的求解结果,提出了一个以废弃手机为例的电子废弃物回收物流设计的战略网络模型.     

Empirical analysis of factors promoting the Japanese 3G mobile phone

This paper aims to specify factors promoting the 3G mobile in Japan. The factors are represented by value-added services such as FeliCa, which enables e-payment, data roaming services, and full music downloads. Panel data from the three main carriers, which occupy over 90% of the Japanese mobile market, is utilized. In order to control network effects as well as the endogeneity of variables, the Arellano–Bond dynamic panel estimation is adopted. As a result, the launch of the iPhone 3G, FeliCa, data roaming, full music downloads, and the flat rate are revealed to have affected the diffusion of the 3G mobile in Japan. The results, reflecting the importance of value-added services, can be applied not only to the next generation mobile development, but also to the promotion of 3G networks in other countries.     

竞争促进、市场扩张与消费者福利增进——基于我国移动语音通信市场的面板数据

利用2002—2008年我国31个省(自治区、直辖市)电信市场的面板数据,采用对数差分两阶段最小二乘法,估计了我国移动语音通信市场的Marshall需求函数,进而测算了我国移动语音通信市场的消费者福利变化。结果表明:2002—2008年期间我国移动语音通信市场的消费者福利经历了一个持续增加的过程,但消费者福利增加呈明显的减缓趋势;消费者福利的持续增进主要是竞争导致的市场不断扩张和价格持续下降的结果,而价格下降速度变慢导致消费者福利增加趋缓;与发达国家相比,我国移动语音通信服务的价格仍然明显偏高,因此可进一步降低价格来增加消费者福利。     

中国移动通信业价格竞争本质解析

中国移动通信业的价格竞争,经过了无价格竞争阶段、显性价格竞争阶段、隐性价格竞争阶段、后价格竞争阶段的演化,体现了制度调节与市场选择并行的内在规律性,也增进了市场协调、提高了市场效率。中国移动通信业价格竞争具有非合作博弈的特性,行业管制与市场选择共同推动了竞争的有序化。因此,要实现中国移动通信市场的有效竞争,市场机制的作用是有限的,还离不开适当的政府行政参与下的不对称管制政策,而且不对称管制政策也需要根据市场变化进行调整和改进。     

Using a mobile application to test the impact of giving feedback onteam-level conflict

The authors explored using a mobile application called DevelapMe for 278 business undergraduates in 54 teams to give real-time peer-based feedback during a 5-week group project. Two online surveys, Time 1 (T1) and Time 2 (T2), were administered. Results included finding three promising, new give-feedback scales: positive rating with comments, negative rating with comments, and negative/neutral rating without comments. Relationship conflict and task conflict were the outcomes. Relationship conflict significantly increased from T1 to T2. Only positive rating with comments had a significant relationship to T2 relational conflict and task conflict. Research exposing students to real-time feedback apps will prepare them for future work in teams.     

多波束移动卫星系统的自适应开环预编码方法

对于卫星移动通信系统,由于卫星与地面终端之间的相对运动以及星地间传输延迟,传统的基于理想信道信息的预编码方法是不适用的。针对这一问题,提出了一种基于开环信道估计的预编码方法。卫星端利用开环获取的部分信道信息实现多波束联合预编码,并导出了系统传输速率的闭合解析表达式。此外,为了克服强干扰环境下多波束预编码系统性能恶化问题,提出了一种自适应预编码传输方法。卫星发射机依据开环获得的慢时变用户位置信道信息和信道统计量信息,自适应地选择预编码方法或传统频率复用方法,实现最优的系统性能。理论分析和仿真结果表明,与传统的干扰抑制方法相比,所提方法能实现更优的系统性能,同时也克服了传统预编码方法的局限性。