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所属行业:计算机、通信和其他电子设备制造业

  • 32891.互联网节能基础设施

    [计算机、通信和其他电子设备制造业,信息传输、软件和信息技术服务业] [2014-02-23]

    Power (energy) consumption has emerged as a new challenge in the design of packet forwarding engines for next-generation Internet infrastructure. Although TCAMs are widely used for high speed packet forwarding, they suffer from high power consumption. We propose mapping state-of-the-art algorithmic solutions onto parallel architectures that are based on low-power memory such as SRAM. We exploited data structure optimization to reduce the power consumption. We formulated the problems by revisiting the conventional time-space trade-off in multibit tries.
    关键词:高效节能;并行架构;多位尝试制定
  • 32892.性能驱动的多模态传感器融合

    [计算机、通信和其他电子设备制造业] [2014-02-23]

    The broad objective of this grant was to develop a generally applicable theory of performance of information-level fusion that provides accurate prediction of post-fusion algorithm accuracy in uncertain environments. determines factors affecting fundamental performance tradeoffs, e.g., sample size, resolution, specificity, and sensitivity of sensors. specifies performance benchmarks allowing quantitative comparison of different fusion algorithms. provides guidelines for algorithm design and optimization. The effort focused on information theoretic fusion methods and our analysis was based on geometric properties of information. Our research has impacted application domains where information theoretic fusion is applied. These included georegistration, remote sensing, multimodality anomaly detection, visualization, and dimensionality reduction.
    关键词:光机电;传感器;性能驱动;模态融合
  • 32893.对称诱导异宿环的耦合传感器设备

    [计算机、通信和其他电子设备制造业] [2014-02-23]

    In this paper we discuss the existence and stability of heteroclinic cycles in coupled systems and show how they can be exploited to design and fabricate a new generation of highly-sensitive, low-powered, sensor devices. More specifically, we present theoretical and experimental proof of concept that coupling-induced oscillations located near the bifurcation point of a heteroclinic cycle can significantly enhance the sensitivity of an array of magnetic sensors. In particular, we consider arrays made up of fluxgate magnetometers inductively coupled through electronic circuits.
    关键词:光机电;传感器;对称诱导;异宿环
  • 32894.X-56A(MUTT)的柔性翼设计示范与传感器控制的反馈

    [铁路、船舶、航空航天和其他运输设备制造业,计算机、通信和其他电子设备制造业] [2014-02-23]

    This document presents an overview of the research DFRC is planning within the Subsonic Fixed Wing (SFW) Light Weight Airframes and Propulsion.
    关键词:光机电;传感器;柔性翼设计;控制反馈
  • 32895.Reachability-based混合控制器的设计方法

    [信息传输、软件和信息技术服务业,计算机、通信和其他电子设备制造业] [2014-02-22]

    With the increasing complexity of systems found in practical applications, the problem of controller design is often approached in a hierarchical fashion, with discrete abstractions and design methods used to satisfy high level task specifications, and continuous abstractions and design techniques used to satisfy low level control objectives. Although such a separation allows the application of mature theoretical and computational tools from the realms of computer science and control theory, the task of ensuring desired closed-loop behaviors, which results from the composition between discrete and continuous designs, often requires costly and time consuming verification and validation. This problem becomes especially acute in safety-critical applications, in which design specifications are often subject to rigorous industry standards and government regulations. Hybrid systems, which feature state trajectories evolving on a combination of discrete and continuous state spaces, have been proposed as a possible approach to reconcile the analysis and design techniques from the discrete and continuous domains under a rigorous theoretical framework. However, designing controllers for general classes of hybrid systems is a highly nontrivial task, as such a design problem inherits both the difficulty of nonlinear control, as well as the range of theoretical and computational issues introduced by the consideration of discrete switching.
    关键词:混合控制器;混合动力系统
  • 32896.无线中继网络中的合作多路复用技术

    [计算机、通信和其他电子设备制造业] [2014-02-22]

    Wireless networks are experiencing an explosive growth in the number of users and the demandfor data capacity. One of the methods to improve capacity is to use tighter cooperationbetween terminals. In order to design a cooperative wireless link, several theoretical as wellas practical challenges need to be addressed. In this dissertation we develop tools for thedesign of practical cooperative links that perform very close to fundamental limits.
    关键词:无线网络;无线连接合作
  • 32897.摄影机最佳布置

    [计算机、通信和其他电子设备制造业] [2014-02-22]

    Optimal Camera Placement is a task shared by applications such as Next Best Viewplanning and Camera Network planning, and it is used in exploration of unknown environments,surveillance cameras placement and scene reconstruction. More speci cally, OptimalCamera Placement consists of evaluating a visibility objective that depends on the sceneand the camera placement and optimizing it with respect to to the camera variable, wheredi erent applications give rise to di erent visibility objectives.
    关键词:摄影机布局;监控摄像头位置;场景重建
  • 32898.节能建筑控制改造的无线平台

    [建筑业,计算机、通信和其他电子设备制造业] [2014-02-21]

    The primary objectives of this project are to demonstrate: (1) energy efficiency gains achievable in small- to medium-sized buildings with MPC- based whole-building optimal control and (2) reduction in first costs achievable with a wireless sensor network (WSN)-based building heating, ventilation and air conditioning (HVAC) control system compared to a conventional wired system. The second objective is key because first cost is a barrier to wider application of advanced HVAC control and 70of the first cost is attributed to installation (wiring) and commissioning.
    关键词:建筑节能;节能建筑;空调设备;控制系统;通信网络
  • 32899.智能电网自动化:IEC61850变电站自动化和DER通信

    [电气机械和器材制造业,计算机、通信和其他电子设备制造业] [2014-02-21]

    Within this very chapter, we are going to provide a short overview on the large amount of applications and technologies involved with the IEC 61850 standard family. Starting with its origins, developed parts, and sub-parts, we will later focus on the information and communication side of this standard family and current developments in information modeling that lead to changes in how to apply the standard family. The focus of this chapter is the application of IEC 61850 in the scope of substation automation and Distributed Energy Resources and differences between those two major use cases.
    关键词:智能电网;自动化;通信
  • 32900.合作代理的分布式能源

    [电力、热力、燃气及水生产和供应业,计算机、通信和其他电子设备制造业] [2014-02-21]

    In this work it is proposed the design of a system to handle Distributed Energy Resources (DER), which is a new reality due to Electric Vehicles (EVs), Microgeneration (MG) and the open Electrical Markets (EM). This upcoming reality brings the need of the 'old' central energy control to be installed locally. For that we propose a local energy broker, responsible to handle local energy flow and to exchange energy with 'big' market players, and based on a collaborative approach, to promote user's participation to increase systems knowledge. The energy broker uses an Information Communication Technology (ICT) network to establish a collaborative communication between the involved parts.
    关键词:分布式能源资源(DER);信息通信技术;能源代理
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