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报告分类:外文技术报告

  • 3811.镁(I)化合物应用到储能材料——第2阶段

    [电力、热力、燃气及水生产和供应业] [2014-04-16]

    This project has been extremely successful and good progress has been made towards all of the originally stated goals. Briefly, (i) a variety of new, extremely bulky monodentate amide ligands have been developed; (ii) these have been utilized to prepare a series of monomeric, low coordinate p-block metal halide precursor complexes; (iii) the precursors have been reduced by magnesium(I) complexes to very low oxidation state/low coordination number p- block complexes, which are of considerable fundamental interest; (iv) the 'transition metal-like' reactivity of the low oxidation state complexes has been demonstrated by their use in facile activation of small molecules such as H2, CO2, N2O etc.; (v) group 14 hydride complexes resulting from H2 activations have been utilized for the first sub-room temperature hydrometallations of unactivated alkene substrates, and as the first main group compounds that act as catalysts for the hydroboration of ketones; (vi) a variety of related results, including the preparation of an iron(I) dimer with the shortest Fe-Fe multiple bond, have been achieved. The results of this study are at the very cutting edge of main group chemistry, and represent significant advances to the field. The study as a whole has generated nine papers in the period, with at least another four to be published in the next 12 months. PI Jones has delivered 10 invited or plenary lectures on project results at conferences and institutions in five countries in the period.
    关键词:新能源与高效节能;储能技术;镁化合物;无机化学
  • 3812.运用灰色聚类和层次分析法的GSM-R网络中电路域干扰评估

    [信息传输、软件和信息技术服务业] [2014-04-15]

    In this paper, we apply the theory of grey clustering evaluations and analytic hierarchy process to assess the interference of the circuit domain in GSM-R networks and make a comprehensive evaluation on interference. Based on the theory of grey clustering evaluations, the interference is sorted into rough groups. Then further classification of the interference can be obtained. The results show that grey clustering evaluations combined with analytic hierarchy process can provide the reliable interference evaluation in the railway services.
    关键词:通信;灰色聚类;层次分析法;GSM-R;干扰评估
  • 3813.4G移动网络中铁路通信的高效越区切换方案设计

    [信息传输、软件和信息技术服务业] [2014-04-15]

    This paper proposes novel handover schemes for railroad communications. Railroad communication network configuration is explained in order to utilize favorable characteristics of railroad communications. In this paper, railroad handover zone is newly proposed for efficient handover and group handover is also proposed in order to reduce handover control overhead. With little modification, the proposed schemes can be applied to machine-to-machine vehicular communications where devices in a moving vehicle communicate with a server in the network.
    关键词:通信;越区切换;铁路通信;移动网络;IEEE 802.16 m
  • 3814.无人驾驶车辆组专用无线通信装置

    [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] [2014-04-15]

    This article describes communication system designed and implemented on Silesian University of Technology based on experience acquired in previews projects. Communication system was designed for micro UAVs. First part of this work describes physical layer and second part describes software layer such as data encryption, establishing and maintaining connection. Proposed devices was tested on group of UAVs and acquired results are very promising.
    关键词:通信;无人驾驶车辆;无线通信;通信系统
  • 3815.采用单路供电的移动通信系统微带贴片天线设计

    [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] [2014-04-15]

    In this paper, we proposed novel particle swarm optimization method based on IE3D is used to design a mobile communication Microstrip Patch Antenna. The aim of the thesis is to Design and fabricate an inset fed rectangular Microstrip Antenna and study the effect of antenna dimensions Length (L), Width (W) and substrate parameters relative Dielectric constant (εr), substrate thickness on Radiation parameters of Band width. When the antenna was designed, a dual-band, dual-polarized antenna was used to secure the bandwidth and improve performance, and a coaxial probe feeding method so that the phased array of antenna is easy.
    关键词:通信;微带贴片天线;移动通信天线;PSO;IE3D
  • 3816.制造公司IT系统的决策相关的生产信息的垂直整合

    [信息传输、软件和信息技术服务业] [2014-04-15]

    This paper examines a flexible communication architecture approach for a vertical integration of production process-relevant data, i.e., for closing the gap between the business and technical levels. The approach enables the transfer of information in form of key performance indicators. The key performance indicators will support decision-making processes in the manufacturing companies. To prove the feasibility of the vertical integration approach a prototype is implemented and evaluated in the SmartFactory~(KL).
    关键词:通信;垂直整合;IT系统;决策过程
  • 3817.基于中继的LTE上行系统中采用单载波频分多址性能的改善

    [信息传输、软件和信息技术服务业] [2014-04-15]

    In this paper, we proposed to install a relay between base station and terminal (or user equipment) in order to improve receiving performance of the downlink transfer mode of the Long Term Evolution (LTE) system, which is the next-generation mobile communication technology standard that has been proceeding in the 3rd General Partnership Project (3GPP). We conduct a paper to improve receiving performance having selected OFDMA and SC-FDMA, as the transfer mode of base station and relay based on the distance of the relay that has been installed and location of base station. The paper found SC-FDMA to be better choice in RS when it is closer to BS and OFDMA to be a better choice in RS when the distance between BS and RS is farther. The system's reception performance improved when the most appropriate transmission method fitting the circumstances was used in the middle between BS and MS.
    关键词:通信;LTE;AF & DF;多跳中继;中继协议
  • 3818.衰落信道的多认知用户自适应副载波分配方法

    [信息传输、软件和信息技术服务业] [2014-04-15]

    An adaptive low-complexity suboptimal algorithm for subcarrier and power joint allocation is presented based on Rate Adaptive (RA) criterion,where adaptive subcarrier allocation is performed by assuming equal power distribution,while each subcarrier is assigned in accordance with subcarrier efficiency function.Moreover,linear water-filling algorithm for power allocation is applied within each subcarrier.Simulation results indicate that,with the proposed adaptive subcarrier allocation,spectral efficiency of multiple SUs is superior to traditional subcarrier power joint allocation algorithm.Low computational complexity and adaptive features make it available for implementation.
    关键词:通信;认知无线电网络;副载波分配;衰落信道;速率自适应准则
  • 3819.塑料光纤上的光通信:集成光接收机技术

    [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] [2014-04-15]

    The Plastic Optical Fiber (POF) provides benefits compared to glass fiber. The best known POF is the step-index (SI) PMMA POF with a core diameter of 1 mm. It is simpler and less expensive than glass fibers. Large-core POF has greater flexibility and resilience to bending, shock, vibration, and it is easier in handling and connecting. The transmission windows of the POF are in the visible range. These advantages make POF very attractive for use in short-range communication and within in-building networks.
    关键词:通信;光通信;光纤;光接收机
  • 3820.为增强LTE下行链路系统性能的多跳中继协议技术应用

    [信息传输、软件和信息技术服务业] [2014-04-15]

    In this paper, we proposed research to boost reception performance in link-down transmission method of LTE system, which is the next-generation mobile communication technology standard underway in 3GPP.  The paper found SC-FDMA to be better choice in RS when it is closer to BS and OFDMA to be a better choice in RS when the distance between BS and RS is farther. The system's reception performance improved when the most appropriate transmission method fitting the circumstances was used in the middle between BS and MS.
    关键词:通信;4G;LTE;OFDMA;SC-FDMA;多跳中继
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