MPLS技术在唐山有线电视综合信息网数据平台中的设计与应用

MPLS技术是一项具有多协议支持的技术，它综合利用了网络核心的交换技术和网络边缘的IP路由技术各自的优点，它将标记分配给多协议的数据桢以便在基于我展品信元的网络中传输。它能够提供现有传统IP路由技术所不能支持的要求保障QoS的业务，通过MPLS技术，我们可以提供各种新兴的增值业务，有效的实施流量工程和计费管理措施，扩展和完善更高等级的基础服务。     

Low response time context awareness through extensible parameter adaptation with ORCA

Ubiquitous computing applications or widespread robots interactions execute in unforeseen environments and need to adapt to changeful available services, user needs, and variations of the environment. Context-awareness ability addresses such a need, enabling, through adaptation rules, applications to react to the perceived dynamic variations. Responses to adaptation have to be quick enough to maximize the time during which the application is coherent with its environment. Adaptation rules, associating variations of the environment to application reactions, are usually established at design time. However, in unforeseen and partially anticipated environments, we claim that adaptation rules have to be dynamically extensible to match previously unexpected variations. Our approach enables rule composition and ensures a deterministic result. We propose to use parameter adaptation to quickly respond to environmental variations and dynamic compositional adaptation to provide extensibility to the parameter adaptation. To foster even lower response times, we internalize context-awareness processing and decision into the application.     

Priming Crime and Activating Blackness: Understanding the Psychological Impact of the Overrepresentation of Blacks as Lawbreakers on Television News

Two experiments examined the extent to which U.S. viewers' perceptions that Blacks face structural limitations to success, support for the death penalty, and culpability judgments could be influenced by exposure to racialized crime news. Participants were exposed to a majority of Black suspects, a majority of White suspects, unidentified suspects, and noncrime news stories. In addition, participants' prior news viewing was assessed. In Study 1, heavy news viewers exposed to unidentified perpetrators were less likely than heavy news viewers exposed to noncrime stories to perceive that Blacks face structural limitations to success. In addition, heavy news viewers exposed to unidentified perpetrators were more likely than heavy news viewers exposed to noncrime stories to support the death penalty. In Study 2, participants exposed to a majority of Black suspects were more likely than participants exposed to noncrime stories to find a subsequent race-unidentified criminal culpable for his offense. In addition, heavy news viewers were more likely to exhibit the above effect than light news viewers. The methodological and theoretical implications of these findings are discussed in light of chronic activation and the priming paradigm.     

Preparing technical communication students to play a role on the translation team

Technical communicators need to be prepared for the challenges of international communication. This tutorial focuses on the need for technical communication faculty to prepare students to be skilled intercultural communicators and to play a role on the translation team. The tutorial begins with a discussion of the importance of writing for translation in the international workplace and then presents specific assignments designed to instruct students in intercultural communication and give them experience writing for translation. In addition to introducing students to the cultural issues that impact the creation of documentation for international audiences, these assignments also serve to reinforce core skills recognized as vital to professional success in the field of technical communication. Taken together, these assignments can be used as the basis for a course in international technical communication. An appendix to the tutorial includes numerous resources available to faculty who want either to develop a course in international technical communication or to include some of the assignments in existing technical communication courses.     

An evaluation methodology for multielement emergency medical services systems

The provision of efficient public safety services continues to be one of the high priority efforts to improve the quality of life in our nation. These efforts are too often equipment oriented without realizing the system input of providing better services in terms of benefit to the public as opposed to providers of the services. These services are multielement containing many items which can be quantified and qualitative aspects which are difficult to assess. The methodology presented herein is designed to specifically evaluate such multi-element systems in a logical manner. Its use expanded to other than emergency medical service systems will permit weak areas to be identified, develop comparisions and rank system elements as to their individual contributions to "bottom line" results, and to help establish priorities for allocation of funding resources.     

一个新的门限多重代理多重签名方案

In the Paper, we proposed a threshold mult- proxy multi-signature with share verification.In the scheme,a subset of original signers allows a designated group to proxy signers to sign on behalf of the original group, A message m has to be signed of proxy signers who can represent the proxy group. Then, the proxy signature is sent to the verifier group.A subset of verifiers in the verifier group can also represent the group to authenticate the proxy signature.In othe words,some threshold values will be given to indicate the number of persons to represent a group to authorize the signing capability or to sign a messagye or to verify the proxy signature.     

再论坚持中国特色社会主义文化自信

坚持中国特色社会主义文化自信, 就是坚持对中国特色社会主义文化的认可、尊重、敬仰与传承、发扬、创新。坚持中国特色社会主义文化自信, 必须坚持习近平新时代中国特色社会主义思想在意识形态领域的指导地位, 全面把握和深刻理解中国特色社会主义文化的构成及其组成部分之间的内在逻辑关系, 坚持把中华优秀传统文化、革命文化和社会主义先进文化有机结合起来, 因应中国特色社会主义建设实践而不断进行创新, 增进文化认同。     

The ITU's role in the restructuring revolution

The ITU recognizes a twofold mission: to monitor regulatory policy changes and technological developments to be in a position to advise members; and to link restructuring changes to overall basic telecommunication development needs. The fundamental goal of the international community in this sector is to achieve universal access to basic telecommunications services. In this context, restructuring is but one component, although the global challenge is to work together to ensure that the restructuring revolution paves the way to filling the development gap. It is readily admitted that new technologies such as mobile satellite systems enable developing countries to leapfrog their infrastructure problems, and that governments recognize the potential benefits of these new technologies and the need to reform regulations in order to facilitate the introduction of these services     

Perspectives on next generation mobile

Employees in today’s enterprises are requesting their employers to allow them to work in a flexible manner. Work is no longer a place to go to but an activity to be undertaken. With developments in technology, the activity can be undertaken whenever and wherever it is convenient for the employees. Increasing demands by employees to be able to work in this way creates a tension within the enterprise as CIOs and finance officers strive to manage the costs and the infrastructure required to support this way of working. Over time, this situation will change as technology allows users to roam securely and seamlessly between networks accessing the required applications and information from a single suitably enabled device. This will tend to reduce the underlying costs as the best connection can be used. Service management will remain a challenge but become a better understood problem as the ’stove-pipe’ nature of current solutions is removed. For this change to be brought about, some enabling technologies have to be put in place. This paper considers issues surrounding next generation mobile solutions and shows how converged services can be used to deliver the vision of being able to work from any place, at any time. Consideration is given to how roaming from fixed to wireless networks can be achieved by reusing already established authentication principles that are now deployed in wide area wireless networks. In order to do this, open methods of managing user identity need to be devised and implemented and approaches to this are also discussed. The paper concludes with a consideration of some of the research challenges that remain to be solved. HP     

基于RFID技术的新型智能电子机票设计

介绍一种多可重复使用的智能机票的设计方案，利用目前成熟的RFID技术并结合GPS技术，为乘客提供一种在任何国家的机场，在语言不通的情况下，也能通过具有AGPS功能的手持设备读取存储在机票中的RFID芯片的内容，并将内容以二维电子地图的方式显示在设备上，并且利用机场GPS导航服务引导顾客到达他们想去的地方，这样不但可以使航空公司节省成本、提供高质量的机场服务而且可以解决机场分流问题，减少误机事件，提高经济效益。     

集成类IT项目的特点与管理方法

以PMBOK项目管理思想为基础,结合集成类IT项目的具体实践,经过多个项目摸索,寻找CMMI模型与集成类IT项目管理过程之间的映射关系.在此基础上进行归纳、总结、提炼,提出了一个初步的、基于CMMI模型的集成类IT项目管理体系架构.     

A perspective on the IEEE landscape: recent changes and future directions [the president's page]

In summary, it is paramount that Societies work together to assure that the management of products and services is satisfactory to them, that decisions made at the corporate level enable them to be financially viable, and that their volunteers continue to be motivated. There is an urgent need for more volunteers who are willing to devote their time to work in partnership with those of other S/Cs to guarantee that IEEE?s overall Technical Activities unit operates successfully from both professional and business perspectives, thus allowing the overall IEEE organization to continue to provide outstanding services to its members, the profession and to humanity.     

Reputation based selfishness prevention techniques for mobile ad-hoc networks

Mobile ad-hoc networks require nodes to cooperate in the relaying of data from source to destination. However, due to their limited resources, selfish nodes may be unwilling to forward packets, which can deteriorate the multi-hop connectivity. Different reputation-based protocols have been proposed to cope with selfishness in mobile ad-hoc networks. These protocols utilize the watchdog detection mechanism to observe the correct relaying of packets, and to compile information about potential selfish nodes. This information is used to prevent the participation of selfish nodes in the establishment of multi-hop routes. Despite its wide use, watchdog tends to overestimate the selfish behavior of nodes due to the effects of radio transmission errors or packet collisions that can be mistaken for intentional packet drops. As a result, the availability of valid multi-hop routes is reduced, and the overall performance deteriorates. This paper proposes and evaluates three detection techniques that improve the ability of selfishness prevention protocols to detect selfish nodes and to increase the number of valid routes.     

集成电路封装线系统性静电防护

文中分析了静电产生的原因、电路静电损伤机理及失效机制。制定了集成电路封装线系统性静电防护措施。其涉及到封装厂房环境静电防护、封装生产设备静电防护、工艺操作静电防护、电路包装和运输过程中的静电防护以及静电防护检测等多个环节。对这些环节的全面控制有利于消除静电对集成电路的损伤。     

Reporting bad news about software projects: impact of organizational climate and information asymmetry in an individualistic and a collectivistic culture

The reluctance of people to report bad news can be a major contributor to the phenomenon of runaway software projects. If senior managers receive bad news sooner, they may be able to prevent runaway software projects through corrective action. Two factors that are known to impact predisposition to report bad news are organizational climate (whether reporting bad news is likely to result in reward or punishment) and information asymmetry (whether hiding bad news is likely to be possible over time). Using matching experiments in an individualistic (United States) and a collectivistic culture (Singapore), this study investigates how the individualism-collectivism dimension of national culture may moderate the impact of organizational climate and information asymmetry on human predisposition to report bad news. The results revealed that individualism appeared to amplify the impact of organizational climate on predisposition to report bad news (compared to collectivism) whereas collectivism appeared to amplify the impact of information asymmetry on predisposition to report bad news (compared to individualism). When deciding on whether to report bad news about software projects, people from an individualistic culture seemed to be more sensitive to organizational climate whereas people from a collectivistic culture seemed to pay greater attention to information asymmetry. These results have useful implications for practice and research involving cross-cultural software project teams. Beyond these implications, these results add a cultural dimension to our existing knowledge on software project management.     

InGaN microring light-emitting diodes

The fabrication and performance of an InGaN light-emitting diode (LED) array based on a microring device geometry is reported. This design has been adopted in order to increase the surface area for light extraction and to minimize losses due to internal reflections and reabsorption. Electrical characteristics of these devices are similar to those of a conventional large-area LED, while the directed light extraction proves to be superior. In fact, these devices are found to be more efficient when operated at higher currents. This may be attributed to improved heat sinking due to the large surface area to volume ratio. The potential applications of these devices are also discussed.     

可持续发展的有效途径：提高能源效率

在21世纪的中国，经济高速发展所带来的资源、环境、生态等问题已经成为可持续发展的制约，因此，政府提出坚持以人为本，把发展切实转入全面协调可持续的轨道；加快转变经济增长方式；把资源节约作为基本国策，发展循环经济，保护生态环境，加快建设资源节约型、环境友好型社会；显著提高资源利用效率，到2010年使单位国内生产总值能源消耗比2005年降低20％左右。本文从可持续发展的观念出发，简要阐述我国能源发展战略的核心—提高能源效率的潜力及相关保障措施。     

E-field ferroelectric sensors: Modeling and simulation [Instrumentation Notes]

In this article, a novel approach to sensing static electric fields has been presented. The approach is extremely interesting due to the low cost of the technology and the simplicity of the architecture. The purpose of the article is to highlight the strategic role of behavioral models in the development and design of E-field sensors. It is important to observe that simulation results must always be supported by experimental evidence to confirm the predicted behaviors. A good solution to perform a reliable investigation, if allowed, is to model the main blocks of the system separately and at the same time to experimentally assess their real behavior to confirm theoretical expectations.     

Design and Performance Evaluation of a Remote Catheter Navigation System

A novel remote catheter navigation system has been developed to reduce physical stress and irradiation to the interventionalist during fluoroscopic X-ray guided catheter intervention. The unique teleoperated design of this system allows the interventionalist to apply conventional axial and radial motion, as used in current practice, to an input catheter placed in a radiation-safe location to control a second catheter placed inside the procedure room. A catheter sensor (used to measure motion of the input catheter) and a catheter manipulator (used to manipulate the second catheter) are both presented. Performance evaluation of the system was assessed by first conducting bench-top experiments to quantify accuracy and precision of both sensed and replicated motion, and then conducting two experiments to evaluate the latency from sensed to replicated motion. The first study consisted of replicating motions of prescribed motion trajectories, while the second study utilized eight operators to remotely navigate a catheter through a normal carotid model. The results show the system has the ability to sense and replicate motion to within 1 mm and 1^deg in the axial and radial directions, respectively. Remote catheter manipulation was found to be operator dependent and occurred under 300 ms. Future applications of this technology are then presented.     

ITU-T initiatives on climate change

It is estimated that ICTs contribute around 2 percent of global greenhouse gas emissions. These percentages are likely to grow as ICTs become more widely available. At the same time, ICTs can be a major linchpin in efforts to combat climate change and serve as a potent cross-cutting tool to limit and ultimately reduce GHG emissions across economic and social sectors. This article looks at the potential role ICTs play at different stages, from contributing to global warming to monitoring it, to developing long-term solutions to mitigate its effects, both directly in the ICT sector and in other sectors such as energy, transport, buildings, and finally to helping adapt to its effects. The article addresses the efforts made by the ITU and its membership to develop new climate-friendly technologies.