一种新的移动卫星综合信息网构架

移动卫星综合信息网与现有的移动卫星通信网有着很大的区别。本文提出一种可反映移动卫星综合信息网特点的天基信息综合系统（SI^3），给出SI^3的网络模型，分析了这种分层网络模型的优缺点，并给出一个具体的参考星座组网例子，最后分析了SI^3建设中面临的技术问题。     

中日“萧条经济”比较分析

根据《新帕尔格雷夫经济学大词典》对于“萧条”的定义,对照中,日两国的实际经济状况,我们可以认定目前中国和日本均处于“萧条经济”之中,但却分属两种不同类型,对两种萧条经济的特征,表现形式和原因等进行比较分析可以发现,货币政策对于二者的作用均不明显,但原因却有不同,目前,积极的财政政策应是两国共同的主要政策方向,同时,由于体制性因素是二者萧根本原因,故而作者主张进行结构调整。     

Estimating Switching Costs in Mobile Telephony in the UK

This paper uses multinominal and mixed logit on British consumer panel data from 1999–2001 to estimate switching costs in mobile telephony. The results of the estimation show that consumers of mobile services in the UK face significant switching costs which vary according to network operators. Network operator choice is also explained by observed and unobserved heterogeneity in consumer tastes. Furthermore, the probability of switching depends on consumer characteristics such as age and the ways they spend their free time.      

低轨卫星通信系统中的一种波束小区切换算法

针对低轨卫星移动通信系统中终端切换频繁，以及因邻区列表动态变化特性使得邻区测量存在较大不确定性的问题，提出了一种基于波束可视时间与接收信号强度的波束小区切换准则。推导了定向天线信号场值广播至地面的时变表达式，基于此预测切换触发时间，并进一步计算终端的邻区列表。根据波束可视时间与接收信号强度计算邻区的切换权重并进一步选择目标波束，针对重复切换的情形设置同一波束切换次数上限。仿真结果表明，该算法可以有效降低终端切换的频次并避免“乒乓切换”的发生，且终端纬度越高，算法效果越明显。     

一种基于微课程的信息类学科移动微学习平台的构建

针对学生注意力时间短,适合微学习,而微课程更易使学生产生聚焦的学习体验的特点,本文构建了一种基于微课程的信息类学科移动微学习平台,该平台旨在满足学生"随时、随地、随需"展开微学习的要求。     

Android移动应用内聚合支付平台的研究与设计

文章对移动应用内支付第三方支付方式中平台接入协议和技术存在的难点进行了研究,提出了一种用于实现应用内支付的聚合支付平台的设计方法,整合了目前主流的多种支付渠道,在用户端界面设计、开发者自服务平台、平台服务端设计、SDK设计四个方面进行了设计分析,其目的是降低应用开发者的技术门槛接入难度。     

Under the sway of a mobile device during an in‐store shopping experience

Mobile device technology is transforming the retail shopping experience. Today's consumers are mobile dependent, preferring to consult with their phone, instead of using the salesperson, while shopping at the retail store. In the absence of literature investigating how the salesperson might sell to this omni‐channel, mobile‐connected consumer, this paper proposes a conceptual model and tests its proposed linkages. The empirically tested model presents a dyadic view of the omni‐channel consumer and the salesperson. Uniquely contributing to the omni‐channel and marketing literature, samples from an emerging economy (India) and developed (United States) economy represent the contexts. Specifically, the research examines the salesperson's role in selling to a mobile‐dependent consumer who uses mobile technology to search for information during the sales meeting. Findings show that adaptive selling can affect purchase intention and customer predisposition to comply with salesperson input. Results also reveal how perceived control, mobile dependence, and customer predisposition to comply with mobile device input affect purchase intention. Managerial and research implications specifically appropriate for the omni‐consumer retail setting are offered.     

Hispanic-Americans,Mobile Advertising and Mobile Services

The literature on marketing to Hispanics and the use of mobile-based marketing methods continues to grow. However, to our knowledge, no research has been published on Hispanic use and acceptance of mobile marketing channels; this research addresses that gap. The study investigates various aspects of mobile channel services including advertising among Hispanic-Americans and non-Hispanic-Americans. The results indicate significant differences between Hispanic-Americans and others in the usage of mobile services, satisfaction with mobile services, and attitudes toward mobile advertising, as well as within Hispanic-Americans based on their strength of ethnic identification. The managerial and theoretical implications are discussed.     

Detecting the relationship between competitive intensity and firm product line length: Evidence from the worldwide mobile phone industry

The way firms lengthen or shorten their product line with respect to rivals is regarded as one of the possible strategies firms can pursue to respond to competition. This article builds and tests hypotheses to study the effect of different levels of competitive intensity on product line length. The empirical analysis of data on 3,527 handset models introduced by 66 mobile phone vendors from 1994 to 2010 shows a consistent inverse U‐shaped relationship between competitive intensity and the firm's product line length. In this way, we pinpoint an interesting link between the product line extension literature and the competitive dynamics and competitive intensity perspectives. Copyright © 2013 John Wiley & Sons, Ltd     

卫星移动通信系统低信噪比抗干扰数字接收机设计

针对阵列天线卫星移动通信抗干扰能力差、传播损耗大等特性,设计了一种数字波束形成技术（DBF）和扩频技术相结合的数字接收机。其中,DBF算法采用基于递归最小均方算法（RLS）的解扩重扩盲自适应波束形成算法,使用VxWorks实现权值计算,FPGA实现波束形成;扩频方式采用直接序列扩频,在FPGA中实现。仿真分析与样机测试显示,通过两项技术联合使用,在信噪比低至-45 dB条件下仍可以实现可靠通信,同时有效加强了系统抗干扰能力。