可配置非幂方分频器的全新设计方法

本文采用基于计数空间完全划分和周期插入控制计数过程方法设计了非幂方分频器,采用这种全新思路设计的非幂方分频器分频范围很宽,分频输出对后续分频支持好,非常适用于通讯接口中的波特率时钟设计.此外,这种设计思路对系统定时电路和节拍控制电路设计也有一定的借鉴意义.     

An Elastic Architecture Adaptable to Various Application Scenarios

The quantity of computer applications is increasing dramatically as the computer industry prospers. Meanwhile, even for one application, it has different requirements of performance and power in different scenarios. Although various processors with different architectures emerge to fit for the various applications in different scenarios, it is impossible to design a dedicated processor to meet all the requirements. Furthermore, dealing with uncertain processors significantly aggravates the burden of programmers and system integrators to achieve specific performance/power. In this paper, we propose elastic architecture （EA） to provide a uniform computing platform with high elasticity, i.e., the ratio of worst-case to best-case performance/power/performance-power trade-off, which can meet different requirements for different applications. It is achieved by dynamically adjusting architecture parameters （instruction set, branch predictor, data path, memory hierarchy, concurrency, status~zcontrol, and so on） on demand. The elasticity of our prototype implementation of EA, as Sim-EA, ranges from 3.31 to 14.34, with 5.41 in arithmetic average, for SPEC CPU2000 benchmark suites, which provides great flexibility to fulfill the different performance and power requirements in different scenarios. Moreover, Sim-EA can reduce the EDP （energy-delay product） for 31.14% in arithmetic average compared with a baseline fixed architecture. Besides, some subsequent experiments indicate a negative correlation between application intervals＇ lengths and their elasticities.     

Tracking Configurable Culture From the Margins to the Mainstream

In this study, we analyze data from surveys conducted in 2006 and 2010, tracking changes in awareness, engagement and attitudes surrounding emerging digital cultural forms over this 5‐year period. Our analysis, based on results from thousands of adults around the globe, shows that not only have remixes, mashups and other forms of “configurable culture” become mainstream phenomena, but also that the attitudes surrounding their cultural legitimacy are shifting. While copyright industries still promote a binary theft/permission framework, many people acknowledge the validity of some appropriation, and are actively negotiating the law's limitations. Yet, those most engaged in challenging dominant copyright narratives and exploring these emergent forms are those who hold the reins of cultural power: the young, educated and wealthy.     

冷连轧过程控制数据管理系统的研究

数据管理系统逐渐成为冷连轧过程控制中的重要组成部分。介绍了一种基于组态软件的数据管理系统,重点介绍了过程数据的采集和存储,及其在冷连轧过程控制中的应用等。     

可配置流处理器核心级指令设计及相关编译技术研究

针对目前微处理器面对通用性、高性能、功耗效率的矛盾,我们提出了可配置流处理器的解决方案。本文重点研究了可配置流处理器中核心级指令设计及相关的编译技术,其核心设计思想是根据应用的计算特征设计流处理器中的核心级指令集,从而降低指令集硬件资源的需求。     

紫金桥组态软件在输煤监控仿真系统中的应用

介绍了输煤监控仿真系统的设计思想及系统组成;并以紫金桥组态软件为操作平台,模拟100MW机组容量的火电厂输煤监控系统的控制逻辑,实现仿真监控。该系统技术先进、结构合理、功能齐全、开放性好,为电厂运行人员在职培训和高校实验教学提供良好工具。     

基于FPGA的可配置FFT_IFFT处理器的设计与实现

设计实现了一种用于P2P移动无线通信手持终端产品。该设计采用优化的单碟形4路并行结构,兼容802.11g协议,可配置完成64点、256点、1 024点的FFT-IFFT处理器,设计以Xilinx公司的Virtex-2系列的XC22V500芯片为硬件平台。通过大量实际信号与数据的联合调试,表明了设计的正确性及实用性。     

基于可配置规则的BOM视图转换方法

在确保物料清单(bill of material,BOM)多视图之间产品数据一致性和完整性的前提下,为实现BOM视图转换技术能够满足企业业务规则的个性化需求并适应企业业务规则可能发生的改变,提出了基于可配置规则的BOM视图转换方法.在分析企业中各种BOM视图之间关系的基础上,建立了BOM视图及其转换过程的基础模型,给出了装配转换规则的结构定义及其配置方法,通过实际案例介绍了该方法在BOM视图转换过程中的应用,表明了该方法能够满足企业业务规则的个性化需求并适应企业业务规则的变化.     

高速可配RSA加速器设计与实现

为实现高速可配RSA硬件加速器,提出了一种基于基—64蒙哥马利算法的模乘器流水线架构及其对应的可配置存储结构。通过五级流水线的并行运算和存储器的灵活配置,可以高效地实现256位到2048位的RSA运算。实验结果表明:与其他相关工作比较,提出的流水线架构能够取得较好的性能和资源消耗比,加速器在模乘器性能和数据吞吐率方面有明显提高。在73 k门硬件资源下,在1024位RSA运算情况下,实现了333 kbps的数据吞吐率。     

Configurable Enterprise:A New Trend in Manufacturing Enterprise Evolution

Along with the popularity of enterprise applications,the management reform of manufacturing enterprise(ME) relies on the business process reengineering is gradually invalid.Reviewing and comparison the former structure of different enter- prise such as extend enterprise,virtual enterprise etc.from the perspective of link,unit,and focus.Through comparison the evo- lution of ME structure the configurable enterprise(CE)was put forward which based on the information and communication tech- nology providing a new mechanism for the elements configuration and the resources allocation.Based on the reference model of en- terprise business architecture,the framework of CE was raised,which includes enterprise business architecture,business model and component.Then modeling the dynamics of CE,the mechanism of key success factors interactions was analyzed and verified the key factors that de decided the evolution of CE which could forecast the development trend of manufacturing enterprise.