向随需应变的信息存储时代迈进--IBM召开2006系统存储大会

2006年5月18日,IBM系统存储部在北京隆重举办“随需存储空间．创新掌控未来”IBM2006系统存储大会。在这次规模空前的存储盛会上,IBM系统存储部首次向业界发布IBM系统存储战略,并与中国用户分享其系统存储和信息随需应变的理念。会上有关专家还深入介绍了整合软硬件和服务的系统存储架构,以及在此基础之上的三维存储解决方案。大会气氛热烈,吸引了国内众多与信息存储技术相关的技术人员参与,充分显示出存储是整个信息产业中一个备受关注的热点,以及IBM作为存储市场领导者所具有的号召力。     

基于SoPC的嵌入式飞行体存储测试系统

由于整套测试系统是嵌入在飞行体等被测目标体内,所以存储测试对测试系统提出了微体积、微功耗、高性能、高可靠性等严格的要求。而传统的存储测试系统越来越显得捉襟见肘,如今片上可编程系统(SoPC)技术的发展为减小系统体积、降低系统功耗、提高系统可靠性提供了有效的技术手段。在传统存储测试理论的基础上,结合SoPC技术,对基于SoPC的嵌入式飞行体微型存储测试系统进行了设计。相比于传统的存储测试系统,基于SoPC的存储测试系统体积缩小了一半,采样率、运算速度和存储容量都得到了大幅度提升。     

容灾系统中存储方案选择的研究

论文首先阐述了在容灾系统中存储方案的重要性,讨论了存储方案需要考虑的衡量指标,然后介绍了主要的存储方式,根据衡量指标划分了存储方式的特性范围,最后着重研究了容灾系统中存储方案的选择流程,并使用一个实例说明容灾系统中存储方案的选择流程。     

大容量机载存储系统设计与仿真评价

针对航电系统中的大容量高带宽存储和机载模块通用性问题, 通过研究机载存储系统架构, 提出了通用扩展机载存储系统架构, 满足机载存储模块的通用性需求。在分析该架构下SIL3132控制器工作原理和机载存储系统关键技术基础上, 设计并实现了基于VxWorks的大容量机载存储系统驱动,最后对大容量机载存储系统的读写性能进行仿真分析, 结果表明大容量高带宽存储系统是一种高效的机载存储系统。     

存储虚拟化在移动网系统中的应用

文章介绍了移动网管系统存储现状。简述了存储虚拟化的发展背景、概念和技术原理，给出了其分层模型，分析了存储虚拟化的三种实现方式以及各自的优缺点，指出存储虚拟化在移动网管系统中将会得到更多的部署。     

商密云存储系统应用研究

分析了云存储及其应用面临的安全需求,提出了以商用密码和云存储技术为基础的商密云存储业务系统。系统地介绍了商密云存储业务系统的系统架构及功能设计,并通过实施高强度安全认证、数据加密存储、统一密钥管理、数据传输加密以及安全隔离等安全机制,保障用户数据在网络传输、处理、存储等全流程的安全,最后从政企客户和公众客户两个层面提出商密云存储产品的服务形态设计思路。     

硬盘播出系统二级存储的设计与应用

本文对南京广播电视集团电视硬盘播出系统的二级存储的总体设计要求及Isilon集群存储的关键技术等进行了分析,并详述了Isilon集群存储在南京广播电视集团电视硬盘播出系统中的应用.     

高速数据同步存储系统设计

介绍了一种高数同步存储系统的设计方案。系统使用NAND Flash构建片内存储阵列、同步管理技术和流水线的设计方案提高其存储速度。在Flash的同步模式下的读、写技术基础上,引入了片内Flash阵列管理方法,使整个Flash的存储速度有了大幅度的提高。同时针对Flash的坏块检测问题,引入了片外存储坏块地址的方法,提高了系统的坏快检测效率,保证系统的稳定性的同时,最大程度上提升了系统的性能。测试结果表明,该系统存储速度快、存储容量大、可靠性高。     

基于AVR单片机和CPLD的姿态测试系统设计

本系统采用CPLD和AVR单片机作为逻辑控制核心,设计了姿态存储测试系统,以实现姿态信息的采集、编帧和存储。详细介绍了姿态测试系统的工作原理和硬件设计。利用AVR单片机,控制数据的写、读、擦除操作,利用CPLD的逻辑控制功能完善了存储测试系统的各个工作状态,提高了存储测试系统工作的可靠性。验证了该系统可以完成对模拟信号...     

云存储技术在铁路综合视频中的应用研究

传统的铁路综合视频监控系统一般采用固定硬盘存储模式对视频数据进行存储和管理。本文通过分析云存储的关键技术和基本架构,文章提出了基于存储虚拟化和分布式存储技术的标准云存储方案、互联云存储方案及分散云存储方案,并通过对实际项目应用分析,确定了云存储技术在铁路综合视频监控应用的可行性。视频云存储方案具有可弹性扩展、读写速度快、数据安全、容灾性能高、易于维护管理的特点,良好适应铁路综合视频监控系统大容量高清化的数据存储要求。     

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.     

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。     

Optimization of gas utilization in plasma processes

The reduction of chemical usage in semiconductor manufacturing has been a topic of wide discussion over the past several years. The aim of this study is to optimize plasma efficiency as chemical reactions by using the Taguchi method. In short, the function of plasma is to serve as an etchant that reacts with films. The results of the reaction are discharged. The main point of optimization was to use a main etchant to increase the amount of desirable main reaction and to decrease the amount of unreacted gas in order to keep the undesirable side reaction to a minimum. We found chemical vapor deposition cleaning conditions that improve plasma efficiency up to 200%, perfluorocompounds (PFC) gas usage to one-third, and PFC gas emission to 25%. We also found nitride etching conditions that improve plasma efficiency up to 350%, SF/sub 6/ usage to 25%, SF/sub 6/ emission to 22%, and selectivity to oxide up to 145% over the previous conditions.     

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.     

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.     

Spectrum flexibility will promote competition and the publicinterest

PCS licensees have the flexibility to provide services that are most valuable to consumers in the same way that companies throughout our economy provide services that consumers demand. This is a sea change in FCC policy and it should be continued. Spectrum flexibility contains two primary components, service flexibility and technical flexibility. With service flexibility, a provider would be allowed to use spectrum to provide any service subject to the technical limitations of the frequency. With technical flexibility, a licensee would be allowed to use any technology to provide its service subject to limitations on interference to other users and regulations to prevent health effects. Both dimensions are important to achieve a competitive telecommunications world     

A technique for assessing an organization's ability to change

The U.S. Shipbuilding Industry, while producing the finest ships for combat, are generally not competitive when it comes to commercial ships. However, when questioned many U.S. Shipyards seemed to believe that their status quo was good enough to compete in the present and future. They did not seem to know that they needed to change in order to compete for commercial business. What was needed was a method which could assess their ability to change. Then, if they were in that group that was not open to change, they would know it. What was developed to address that need was a computer-based questionnaire which results in an assessment of the organization's ability to change. The perceptions of the participants are captured through analysis of their answers gathered through individual input to a personal computer. The measurements are then used as the basis of a dialogue with the participants which leads to a valid self-assessment. The results are generally presented in a single plot referred to as the organization "radar plot." In the beta tests, the visual plot was successfully used to develop an informative self-assessment of the organizations strengths and weaknesses. The ability to develop meaningful dialogue about a company's ability to change is the strength of this method.     

Protecting poorly chosen secrets from guessing attacks

In a security system that allows people to choose their own passwords, people tend to choose passwords that can be easily guessed. This weakness exists in practically all widely used systems. Instead of forcing users to choose secrets that are likely to be difficult for them to remember, solutions that maintain user convenience and a high level of security at the same time are proposed. The basic idea is to ensure that data available to the attacker is sufficiently unpredictable to prevent an offline verification of whether a guess is successful or not. Common forms of guessing attacks are examined, examples of cryptographic protocols that are immune to such attacks are developed, and a systematic way to examine protocols to detect vulnerabilities to such attacks is suggested     

Three hundred-mm wafers: a technological and an economical challenge

For the transition from 200- to 300-mm wafers, in addition to the technological challenges, there is the equivalent cost challenge to be met. The ultimate target is cost parity per unit area of silicon between 200 and 300 mm. The major blocking point to be cleared appears to be crystal pulling. The question of cost of crystal pulling is mainly related to the large crystal weights (>300 kg) and to the issue of crystal defects (crystal originated pits (COPs); voids in the Si crystal) generated by crystal pulling. An alternative route to address the defect problem is to use epitaxy to create a defect-free layer of Si for the active device regions. Close co-operation between wafer manufacturers and users is absolutely necessary to address these key issues. Furthermore, to contain cost, wafer makers and device manufacturers have to work together intensively to implement standardisation wherever possible and to avoid cost driving overspecifications (e.g. for front and backside particles or flatness).     

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.