6 research outputs found

    Measurement Method of Logical Gate in Bulk Spin Quantum Computer

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    提出一种核磁共振量子计算机两量子位逻辑门测量的方案。该方案通过设置适当的标记量子位可显著缩减测量所需输入态数目,给出量子门和具体输入状态集合的实验脉冲序列。包含较少J偶合演化的脉冲序列设计可有效减少操作时间,削弱环境对量子系统的退相干影响。A scheme of measuring two-qubit logical gate is proposed based on nuclear magnetic resonance,which includes the specific input states and complete pulse sequences.In comparison with the approach not using ancillary qubit,this method remarkably reduces the number of the inputs at the cost of flag qubit resource.The pulse sequence with fewer J-coupling evolution can effectively shorten the experiment time and weaken the quantum system decoherence effect by environment.福建省自然科学基金(2008J0219;2009J05152

    Political Connection,Private Relationship,Choice of Audit Firm and Audit Conspiracy

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    本文从政治联系角度研究私人关系的形成原因以及政治联系和私人关系之间的合谋可能借助于哪类事务所来实现。研究发现:首先,客户的政治联系是私人关系产生的一个主要原因,政治联系越强,越可能产生密切的私人关系;其次,政治联系和私人关系的合谋主要借助于小事务所来实现,政治联系的强度越大则越可能选择中国本土的小事务所。此外,本文为合谋理论也提供了相关的经验证据,发现政治联系和私人关系之间的合谋会给客户带来更好的审计意见和更大的盈余管理空间。本文的发现对监管部门具有一定的实践指导意义。This paper investigates the impact of political connection on private relationship and the type of audit firm which takes part in the audit conspiracy between political connection and private relationship.First,we find that client's political connection is an important factor where private relationship is formed,and the stronger the political connection,the easier the private relation is formed.Second,the audit conspiracy between political connection and private relationship exists in the domestic small audit firm,furtherly,the stronger the political connection,the easier the domestic small audit firm is chosen.In addition,we also provide some evidence about the audit conspiracy.We find that the client obtain better audit opinion and larger earning management through the conspiracy.The results are helpful for regulators.教育部课题(项目批准号:08JC630060)的阶段性成果之

    银和去合金银-金纳米粒子的SERS活性研究

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    用乙二醇还原硝酸银,聚乙烯吡咯烷酮作表面活性剂合成了大量的银纳米颗粒。银纳米颗粒和HAuCl4发生置换反应后形成去合金银-金纳米粒子。以吡啶和SCN-作为探针分子研究了它们的SERS活性。结果表明,当探针分子吸附于银纳米颗粒和去合金银-金纳米粒子上时,探针分子的特征振动峰强度增强、频率发生位移。SERS可表征纳米粒子物理和化学性质的变化

    闽南地区5869例儿童社区获得性肺炎患者病原学特点分析

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    目的通过对闽南地区社区获得性肺炎(CAP)患儿病原特点进行分析,为CAP早期预警、预防和早期经验治疗提供指导和依据。方法收集我院2015年1月至2017年5月5 869例CAP患儿静脉血、呼吸道分泌物及痰标本分别进行肺炎支原体(MP)、呼吸道病毒检测以及细菌培养和鉴定。结果 5 869例CAP患儿中明确病原体感染4 931例,其中单纯细菌感染3 054例,单纯病毒感染966例,单纯MP感染620例,混合感染291例,未检出病原体938例。细菌性病原主要以肺炎链球菌、流感嗜血杆菌和卡他莫拉菌为主,在各季节检出率不同且男性多于女性,主要在低龄儿童中检出。病毒感染者主要分布于低龄儿童,夏季检出率最高,病原以呼吸道合胞病毒(RSV)为主,占68.22%。该类患者在性别上比较差异无统计学意义。MP感染者中女性多于男性,主要分布于大龄儿童,冬季检出率最高。结论本地区CAP患儿病原检出率由高到低分别为细菌、病毒和MP。细菌和MP检出率在患儿中具有性别差异,各种病原在不同年龄段儿童及季节中检出率不同。厦门市第二批青年创新创业人才项目(2015-A-03
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