Untraceable Analysis of Scalable RFID Security Protocols

Wireless Personal Communications - In order to support robust implementation of IoT, many schemes have been done to provide privacy, anonymity, scalability and customizability. Ray et al.’s...     

A 16 Gb/s adaptive bandwidth on-chip bus based on hybrid current/voltage mode signaling

This paper describes an adaptive bandwidth bus (ABB) architecture based on hybrid current/voltage mode repeaters for long global RC interconnect static busses that achieves high-data rates while minimizing the static power dissipation associated with current-mode signaling. Attaining a maximum aggregate bandwidth of 16 Gb/s (i.e., 1 Gb/s per line) across lossy on-chip interconnects spanning 1.75 cm in length, the bus core fabricated in 0.35 /spl mu/m CMOS technology dissipates approximately 93 mW with a supply of 2.5 V and signal activity of 0.5, equivalent to 5.71 pJ/bit. Experimental results using a 16-bit reference bus design that can be externally programmed to operate in voltage, current or adaptive modes indicate a 50% reduction in power dissipation over current-mode (CM) sensing, and an improvement in interconnection delay and signaling bandwidth of 35%-70% and 66% over voltage-mode (VM) sensing, respectively.     

基于改进BP算法的网络态势预测模型

准确的网络态势预测可以有效的减小网络拥塞程度.本文对网络拓扑和流量数据进行分析,提取了节点数、OD流数、大象流数、总流量等反应网络态势的参数,建立了基于BP神经网络算法的预测模型进行模拟,能够有效的预测上述参数的发展趋势,在网络管理中有较好的应用前景.     

城市地下管网管理系统数据分析

地下管线是城市基础设施的重要组成部分,是城市规划建设管理的重要基础信息。随着城市规模的扩大和现代化程度的不断提高,地下管线也越来越庞大、密集,其种类也越来越复杂,建立城市地下管网信息管理系统,实现地下管线信息的数字化管理工作,也是智慧城市建设的重要一环。文章从数据分类、地形数据来源与分析、地形数据分层、地形数据要求、管线数据要求等方面对地下管网管理系统涉及的数据进行了详细分析。     

自聚焦介质波导中的新型导波

本文给出了导波层为自聚焦介质平板波导波方程的特殊精确解,得到了具有非线性导波层的波导归一化色散方程及场分布,并对得出的结果进行了讨论。     

自行火炮车体刚强度有限元分析

对某自行火炮车体在静态射击时的受力情况进行了分析，建立了；一体刚强度有限元分析的数学模型，给出了整；一网格图。采用三维空间板壳单元对最小射角、中间射角三种情况下的车体刚强度进行了计算，给出了计算结果，并对计算结果进行了分析。结果表明：火炮射击时对车体顶甲板的应力和变形影响最大，且顶甲板应力和变形随角的改变而明显改变；该车体结构设计合理，刚强度满足设计要求。最后提出了４点改善车体刚强度的建议。     

左截尾双参数指数分布的可靠性评估(Ⅰ)

对左截尾双参数指数分布,给出了其分布参数(位置参数μ,尺度参数θ)、可靠性测度(失效率A,平均失效前时间(MTTF)M,可靠寿命tR,可靠度R(t))的UMVUE、Bayes估计与经典精确限和Bayes精确可信限,还给出了MTIF高精度的经典近似限.最后用数值例说明了这些方法.     

High Temperature Oxidation of FGH96 P/M Superalloy

High temperature oxidation behaviors of FGH96 P/M superalloy have been studied in air at temperatures ranging from 600 to 1000℃. By means of isothermal oxidation testing,X-ray diffraction,SEM(scanning electron microscopy),and EDS(energy dispersive X-ray spectroscopy) analyses,the oxidation kinetics as well as the composition and morphology of scales were investigated. Thermodynamic calculations were used to explain the oxidation mechanism. The results showed that as the oxidation temperature increased,the oxidation rate,the scale thickness,and scale spallation increased. FGH96 P/M superalloy exhibits good oxidation resistance at temperature below 800℃. The oxidation kinetics follows an approximately parabolic rate law,and the oxide layer was mainly composed of Cr2O3,TiO2,and a little amount of NiCr2O4. The oxidation is controlled by the transmission of chromium,titanium,and oxygen through the oxide scale.     

JAVA多线程机制在网络游戏中的应用与研究

网络游戏软件通常是针对某一种玩法而开发的,功能上缺乏多样性.采用Java多线程机制模拟实现网络扑克牌游戏,并基于软件复用思想,研究通过构件定制技术来灵活设置游戏人数,使用户在同一个游戏软件中选择不同的玩法,从而提高游戏的灵活性.     

THz Channel Modeling: Consolidating the Road to THz Communications

For the sake of meeting the demand of data rates at terabit (Tbit) per second scale in future networks,the terahertz (THz) band is widely accepted as one of the...