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企业境外机构(项目)档案是企业档案的重要组成部分,在企业涉外产权登记、财务监督、考核评价、防范法律风险等工作中发挥着重要的依据和支撑作用.本文结合油田企业境外机构(项目)档案管理的现状及存在的问题,提出加强企业境外机构(项目)档案管理的意见和对策.  相似文献   
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Applications on iterative control and multiple input multiple output (MIMO) system were developed. Two new charts derived from extrinsic information transfer (EXIT) chart were employed as the designing tools, which are called as output mutual information chart with defined iterative degree (DID) chart and near optimum output mutual information (NOMI) chart respectively. Different from the EXIT chart, they can show the iterative performance on the whole signal-to-noise ratio range with one single curve, whereas computation complexity is greatly reduced compared with conventional bit error ratio (BER) performance curve. The iterative control was implemented according to a near-optimum iterative degree vector determined by NOMI chart, the reasonability of uncertain parameters was analyzed in one MIMO system. The concepts were illustrated based on bit-interleaved coded modulation with iterative decoding (BICM-ID).  相似文献   
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通过弯沉和承载板的对比实验,在大量试验数据的基础上,对有关规范提供的路基路面的回弹弯沉和当量回弹模量两者换算关系的经验公式提出了不同看法,并结合当地的实际情况提出了新的经验公式。  相似文献   
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大体积混凝土施工的温升控制措施   总被引:5,自引:0,他引:5  
结合工程实例,从砼温度控制基本要求,理论计算及施工技术措施等方面提出温升控制的具体方法。  相似文献   
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An improved list sphere decoder (ILSD) is proposed based on the conventional list sphere decoder (LSD) and the reduced- complexity maximum likelihood sphere-decoding algorithm. Unlike the conventional LSD with fixed initial radius, the ILSD adopts an adaptive radius to accelerate the list cdnstruction. Characterized by low-complexity and radius-insensitivity, the proposed algorithm makes iterative joint detection and decoding more realizable in multiple-antenna systems. Simulation results show that computational savings of ILSD over LSD are more apparent with more transmit antennas or larger constellations, and with no performance degradation. Because the complexity of the ILSD algorithm almost keeps invariant with the increasing of initial radius, the BER performance can be improved by selecting a sufficiently large radius.  相似文献   
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