289 research outputs found

    健康医疗大数据试点工作概览及问题对策研究刍议

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    健康医疗大数据是国家重要的基础性战略资源,是新型"能源"和21世纪的"钻石矿和智慧树"。当前,国家正大力推进健康医疗大数据试点工作,以健康大数据为抓手和新型服务手段构建"健康中国"新局面,提高全民健康水平,让人民有更多、更直接的获得感。本文盘点了健康医疗大数据试点省市最新工作进展情况,对存在的数据权属、数据安全、数据融合、数据共享、数据采集和开发等相关问题,提出了夯实基础、立法先行,制定信息标准化、构建安全体系等对策

    TD-LTE network optimization analysis based on drive test

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    移动互联网的高速发展以及4g移动网络的逐渐商用,将带动全球通信行业产生前所未有的巨大变革。面对高速增长的4g用户数以及用户对移动网络更丰富的需求、更优异的体验,4g网络优化更加凸显其在网络质量中的地位。基于路测,对单站的网络优化重要指标进行分析,并结合实测数据对可能造成无线网络上下行吞吐率不稳定等问题的原因进行排查定位,达到覆盖、容量、质量的最佳组合,提高用户满意度,提升运营商的品牌形象。With the rapid development of mobile internet and gradually commercial using of 4G mobile network,it leads the unprecedented great change of global communication industry.Since the rapid growth of 4G users,and their more abundant demands and greater excellent experience over mobile network,4G network optimization becomes a more important factor in network quality.Based on the drive test,the important index of single station network optimization is analyzed;the reason possible caused by unstable throughput rate of wireless network is found out with measured data.The proposed method achieves the best combination of coverage,capacity and quality,improves customer satisfaction and promotes the brand image of operators.国家自然科学基金面上项目资助(61172097;61371081

    Synthesis and Applications of Carbon Dots

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    近年来,由于碳纳米材料具有高的催化活性以及好的稳定性等优点,其在科学、工程以及商业领域都得到了广泛的应用。其中新型“零维“碳纳米材料——碳量子点(CArbOn dOTS,CdS)具有荧光信号稳定、无光闪烁、激发波长和发射波长可调控等独特的光学性质,以及生物毒性小和生物相容性好等优势,逐渐成为碳纳米材料的研究热点,广泛应用于生物成像、生物细胞标记、传感器、光催化、太阳能电池以及发光元件等领域。本文主要综述了CdS的不同合成方法(包括自上而下法和自下而上法)及其应用。In recent years,nanomaterials have made an important impact on diverse science,engineering,and commercial sectors due to their high catalysis,lowcost,and good stability.Acting as a class of ‘zero-dimensional'carbon nanomaterials,carbon dots( CDs) possess unique optical properties of high photostability against photobleaching,tunable excitation and emission wavelength,as well as lowcytotoxicity and good biocompatibility.Therefore,CDs have become a hot subject of carbon nanomaterial in the past decade,not only for its unique properties but also for its applications in various fields such as bioimaging,biolabeling,sensors,photocatalysis,solar cells, light-emitting element and so on.This article reviews the different synthetic methodologies( including two classes: top-down and bottom-up) to achieve good performance of CDs.At the same time,the applications of CDs are also reviewed in the article.国家质检总局科技计划项目(No.2012QK053); 福建省质量技术监督局科技项目(No.3002A91429); 福建省高校产学合作科技重大项目(No.2012H6026); 福建省自然科学基金项目(No.2012D136); 福建省教育厅科技项目(No.JB14180)资助~
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