基于高速ADC和FPGA的IR-UWB相干接收机设计

为了探索超宽带（UWB）技术的空间应用,设计了一款脉冲无线超宽带（IR-UWB）的全数 字化相干接收机。本系统利用高速采样芯片ADC08D1000对IR-UWB信号进行双通道交织 采样,接下来利用Xilinx FPGA对采样数据进行降速处理。按照二分搜索、相干捕获 、脉冲跟踪的方案进行接收系统设计,并对该接收机进行了实际测试。最终实现了1 ns 脉宽的IR-UWB信号的正确接收和1 Mb/s码速率的OOK编码通信。     

航空通信系统试飞过程中的电磁兼容性评估

电磁兼容性(EMC)是航空电子产品的主要性能,也是实现系统功能的重要保证。试飞试验是 按照预想实现一种思想而提供最终证据的在机载真实环境条件下进行飞行试验,并通过试飞 数据分析结果评估系统效能,所以,EMC预测是航空电子系统试飞评估主要内容之一。论述 了基于电磁拓扑（Electromagnetic Topology）理论分析的航空通信系统EMC评估方法,该 方法已在航空通信系统试飞中被采用。     

高职英语专业学生跨文化交际能力缺失与培养策略

跨文化交际能力的培养对于英语专业学生有着极为突出的重要性,针对高职英语专业学生对英语国家社会背景了解不足、文化素养普遍较低,跨文化交际意识较薄弱的特点,提出了跨文化交际能力的培养策略。以使高职英语专业学生能够更好的适应工作岗位的需求。     

The Impact of Communication on Conflict between Expatriate and Local Managers Working in NPD Projects of MNC Subsidiaries: A Local Perspective

This study investigates the impact of communication between expatriate and local managers on two types of conflict in subsidiaries of multinational companies (MNCs) engaged in new product development (NPD). The data was collected from 438 local NPD managers who regularly collaborate and communicate with expatriate managers. The findings suggest that the quality and bidirectionality of cross-cultural communication reduce relationship conflict but increase task-related conflict. In addition, a more formalized communication style increases both relationship conflict and task conflict. The findings hold implications for MNCs in that improvements to different communication dimensions are suggested.     

Distributed group support systems: Social dynamics and design dilemmas

A “distributed group support system”; includes decision support tools and structures embedded within a computer‐mediated communication system rather than installed in a “decision room.”; It should support groups who are distributed in space but not time ("synchronous”; groups), as well as “asynchronous”; groups whose members participate at different times. Pilot studies conducted in preparation for a series of controlled experiments are reviewed in order to identify some of the problems of implementing such a system. Many of the means used by groups meeting in the same place at the same time to coordinate their activities are missing. Embedding decision support tools within a different communications medium and environment changes the way they “work.”; Speculations are presented about software tools and structuring or facilitation procedures that might replace the “missing”; coordination channels.     

The Role of Language in the Communication Process Between Business and Government: Evidence from Russian Firms

Abstract

The paper investigates how language facilitates communication process between government and business. We use Russian context to show barriers and challenges of using language in official communication between governmental authorities and Russian companies. In our work, we demonstrate how language may produce employee’s misunderstanding and discuss typical sources of ineffective usage of language. The results indicate that problematic issues of both linguistic and non-linguistic nature can lead to serious implications for successful communication between government and business in Russia. We found that documentations’ complexity, which is perceived as such due to a complicated subject area they belong to (legal, tax, etc.) and language insufficiency applied are most likely to raise multiple problems related to government’s communication with business.     

IMC: Has anything really changed? A new perspective on an old definition

Integrated marketing communication (IMC) has emerged as a new concept in marketing in the twenty-first century. IMC is mostly thought of, taught and written about as simply the integration of advertising and promotional activities. However, this paper proposes IMC as a broader concept. It is more than a process or activity within an organisation: it is a system of belief or engagement, embedded in an organisation's culture, underpinned by communication and driven by technology and senior management. We identify seven major tenets of the integrated view of marketing communication within the IMC literature, and argue that early marketing concepts of the twentieth century are no longer valid. IMC can be seen as a new paradigm in marketing, equipped with central concepts that apply to many business environments.     

Driving Forces for M-Commerce Success

Abstract

Is m-commerce just an extension or a subset of e-commerce? Will it turn out to be just more hype? In this paper we discuss the realities of m-commerce and the major differences between mobile commerce and Internet-based e-commerce. Based on this understanding, we identify key factors that must be taken into consideration in order to design valuable m-com-merce applications. We emphasize that the success of m-commerce relies on the synergy of three driving forces: technology innovation, evolution of a new value chain, and active customer demand.     

通讯基础设施对经济增长的空间溢出效应研究

文章基于跨省面板数据构建动态空间面板杜宾模型,采用空间偏微分法深入估计了电话与互联网两类通讯基础设施对经济增长的直接效应与空间溢出效应,同时进行了区域异质性分析。实证发现:电话普及率与互联网普及率对经济增长均有不显著的正向直接效应,前者有不显著的正向空间溢出效应,后者则有显著的负向空间溢出效应,而二者的交互项在长期与短期均表现出显著的正向直接效应与空间溢出效应,且长期表现均优于短期,两个时期发挥的总效应均主要来自空间溢出效应。此外,东部地区二者的交互项有显著的负向空间溢出效应,而中西部地区二者的交互项则有正向空间溢出效应。为此,今后应建立电话与互联网两类通讯基础设施的动态耦合协同机制,提高区域联动性与整合度,充分发挥其对地区经济增长的促进效应。     

新形势下提升科学传播效力路径初探——以“首都科学讲堂”为例

构建促进公民科学素质提升的科学传播路径能够有效促进公众了解科学知识、辩证地看待科学对人类发展进程的促进作用。公共服务体系承载科学传播使命增强了科学传播的普惠性。“首都科学讲堂”是新形势下探索科学传播路径的典型范例。本文通过分析“首都科学讲堂”的新媒体融合路径,介绍了其以发挥科普工作主体的主导作用为基点,利用信息技术精准提升科学传播水平,以新媒介为补充适应媒介融合发展趋势的科学传播路径探索。