升级3G后同址干扰分析及解决方案

本文系统分析了同站址时的主要干扰类型，给出了各种干扰的数学计算模型，然后详细阐述了WcDMA与GSM系统相互之间的干扰情况，给出了WcDMA与GSM同址时所需的隔离度及天线隔离要求，并给出了工程中的解决方案。     

单端正激变换器混合离散优化设计

本文讨论了四路输出单端正激变换器功率变换级的优化设计方法,给出了优化数学模型。其优化设计方法能直接用于工程设计。文中给出了一个实例及计算结果。     

基于Windows的VPN实现及安全性分析

比较给出了VPN的各种实现技术,分析了基于Windows软件实现VPN的技术,给出了目前广泛使用的WindowsXP下VPN服务器的设置,给小型企业及移动用户提供了一种远程接入单位VPN的方案。     

数列平均值极限的相关问题

本文讨论了数列平均值极限的相关问题，给出了若干反例及相关命题。     

FH／DS通信系统的位同步研究

本文为ＦＨ／ＤＳ系统提出了一种快速数字锁相的位同步方案，给出了该方案的构造原理及实现方法，并对系统的同步概率进行了理论分析，最后给出了实验结果，该方案的抗干扰能力优于传统方案。     

贸易便利化:我国的机遇和挑战

随着经济全球化及贸易自由化的发展,贸易便利化已逐渐提上日程,本文首先给出了贸易便利化问题的由来及WTO关于贸易便利化的谈判过程,指出贸易便利化是经济全球化过程中的一种新的竞争形式,既给我国带来了机遇,同样也存在着挑战,最后给出了我国应采取的策略与建议。     

综合话单采集系统及其应用研究

给出一种话单数据采集系统,并给出具体实现流程及在交换机计费中的应用。     

S波段三次宽带倍频器

本文介绍了一种Ｓ波段宽带高效微波倍频器的设计方法，给出了其印刷电路及性能指标。     

软件集成测试的用例设计及测试管理

对测试在软件开发过程中的积极作用进行了分析,描述了集成测试的基本过程及管理方法.结合实际测试项目,给出了集成测试的实际用例及测试结果,并给出软件测试管理系统的功能结构,指出使用管理系统管理测试过程有利于测试数据的统计分析,对项目团队建设和软件产品的质量提高具有积极作用.     

Q对称熵损失函数下定时截尾情形几何分布参数的Bayes估计

本文首先利用Q对称熵损失函数的性质及Bayes风险的唯一最小值解为Bayes解,讨论了Q对称熵损失函数下定时截尾情形几何分布参数的估计问题,给出了在任何先验分布下Bayes估计的一般形式,以及在给出先验分布的情况下给出了上述情形下几何分布Bayes估计的精确形式,最后证明了此Bayes估计是可容许的。     

空间通信协议(SCPS)及其应用:现状、问题与展望

分析了空间通信协议（SCPS），并对主要应用领域的发展现状进行了评述，提出空间通信协议在天地一体化网络应用中暴露出的一些适用性问题，并指出了未来空间通信协议的发展方向。     

机载甚高频ACARS数据链系统及通信管理单元设计

装备通信管理单元、甚高频电台等机载设备的飞机具备接入飞机通信寻址与报告系统（ACARS）地空数据网络的能 力。分析了甚高频ACARS数据链机载系统的结构,探讨了通信管理单元的服务功能和应用功 能,基于通信管理单元与甚高频数传电台、机上系统以及驾驶舱之间的接口和协议,设计了 实现ACARS协议的通信管理单元的软件结构模型。     

无人机通信总线应用系统的研究

本文介绍了我国无人机的发展现状,对几种总线标准进行了比较,最终选择了1553B总线,对无人机通信系统进行了规划,并设计了一套地面测试系统,给出了系统的软硬件实现方法。     

基于软件通信体系结构的OFDM波形实现

探讨了软件定义无线电开放的软件通信体系结构(SCA),实现了其核心框架,在此基础上给出了OFDM波形应用的开发过程,这些都为以后其他波形应用的开发提供了基础。     

对军用GSM数字移动通信系统对抗技术的探讨

针对GSM数字移动通信系统在军事领域的广泛应用，本文在分析其无线信道传输机理及其无线信号特征的基础上，对军用GSM数字移动通信系统的对抗技术进行了初步的探讨。     

采用云计算技术的网络流量检测

为了实现对现网大数据网络流量的实时、有效检测,提出了一种基于云计算的网络流量检测方案。该方案充分利用Hadoop平台Map/Reduce编程模型在海量数据处理方面的优势,采用分层化的设计思想,克服了传统检测方案在海量数据应用环境中效率低下、可扩展性与安全性不足的缺点。重庆移动DPI平台应用表明,该方案较为有效,流量检测效果良好,在大数据处理时效率较普通分布式处理有明显提高。     

甚高频ACARS通信系统物理层信号处理单元设计

通过对民航ACARS数据链通信系统物理层的深入研究,采用通用信号处理开发平台,设计 开发了DSB-AM/MSK调制解调器,引入CSMA忙闲检测及信道质量检测机制,结合实际 工程应用,实现了与国际民航电台的可靠互通,为民航ACARS通信系统的自主工程研制奠定 了基础。     

The attitudes of business majors toward the teaching of business ethics

Business majors were tested for their attitudes toward the teaching of business ethics in university business education. Respondents indicated that they considered ethics an important part of a business curriculum and that they preferred integrating ethics into a number of different courses rather than taking a separate compulsory or elective ethics course. Ethical business practices were seen by respondents as increasing profit and return on investment and creating a positive work environment and public perception of the organization.Karen Stewart is an Assistant Professor at Richard Stockton College of New Jersey. She has taught undergraduate business courses for over ten years and has published in the areas of educational marketing, business school accreditation, marketing by nonprofit agencies, and business ethics.Linda Felicetti is a Professor of Marketing at Clarion University of Pennsylvania. She has published in the areas of retailing, educational marketing, marketing of nonprofit organizations, and business ethics.Scott A. Kuehn is an Assistant Professor in the Department of Communication at Clarion University of Pennsylvania. He earned his Ph.D. in Communication in 1987. His research interests include the study of computer communication and the educational application of computers in higher education.     

中国公共资金边际成本估量与分析

本文构建了一个可计算一般均衡模型(CCE),用于估量和分析我国的公共资金边际成本(MCF).分析结果表明,我国税收的MCF是比较高的,介于1.208～1.451.这说明,在我国通过税收筹资的公共项目,每单位支出的价值至少要大于1.208,才是有效率的.此外,通过分析还发现,我国的各主要税种之间以及同一税种在不同行业之间的MCF差别较大,表明我国税制还有较大的效率改进空间.     

Towards a theory of Sustainable Communication in Risk Society: Relating issues of sustainability to marketing communications

There has recently been much discussion about a preferred ecological outcome for late capitalism to work toward, that is sustainable consumption. Related to this is a fundamental question, can business in Western industrial society (some now use the label risk society) be transformed into ecologically sustainable organizations? If we optimistically assume the answer to this question to be 'yes' how would these organizations communicate with the world in which they operate? This paper reports the author's application of a social constructionist approach to 'green' communicative acts and those responsible for them in an attempt to start answering such questions. In a qualitative empirical study of an environmental and social justice communications consultancy the social world of the people involved is explored as they interact with and communicative the issues with which they are concerned in risk society. A main research theme attempted to relate three issues of ecocentrism to what is known as marketing communications. In this respect the author has concentrated on a leading edge agency and four of its clients in the fields of animal, personal health and planet preservation. In the analysis the author lays the foundations for a new theory, Sustainable Communication, which can account for communicative acts, in any eco-discourse (Harris, 1996), that have issues of sustainability as their focal point. This process is then problematized for the reader in relation to capitalist organizations and the final discussion proposes that others, interested in this theoretical area, play with this notion of Sustainable Communication to help in its future development. In this respect the author proposes a fruitful allegiance between Critical Macromarketing and Sustainable Communication. Throughout the paper, especially in the section on 'building blocks', the author chooses to illustrate key points for the reader by drawing on data from the study.