A hybrid linear amplifier is inserted at the output of the source-in-the-middle distribution protocol to overcome the shortcomings of the transmission distance.The modified protocol aims to maintain a high key rate fo...A hybrid linear amplifier is inserted at the output of the source-in-the-middle distribution protocol to overcome the shortcomings of the transmission distance.The modified protocol aims to maintain a high key rate for long-distance transmission under high noise.It has the potential to significantly broaden the application range of the continuous variable quantum key distribution protocol.The effects of amplifier parameters and noise on the modified protocol are analyzed in detail with regard to applying it to a practical system.To make the simulation more realistic,the effect of finite size on the new protocol is taken into account.It will serve as a guideline for the future use of hybrid linear amplifiers.Different parameters can be adjusted to achieve the best performance for key rates of different quantum channels.展开更多
研究[1-2]显示,结构化运动疗法是治疗慢性非特异性腰痛(chronic nonspecific low back pain,CNSLBP)的有效和经济方式,但较少见用单一特点运动疗法治疗CNSLBP的报道。本研究通过腰伸肌力量训练治疗CNSLBP患者,探讨其是否可增加患者矢状...研究[1-2]显示,结构化运动疗法是治疗慢性非特异性腰痛(chronic nonspecific low back pain,CNSLBP)的有效和经济方式,但较少见用单一特点运动疗法治疗CNSLBP的报道。本研究通过腰伸肌力量训练治疗CNSLBP患者,探讨其是否可增加患者矢状位脊柱活动性、改善疼痛评分和功能障碍,现报告如下。1资料与方法1.1一般资料选择2017年1月~2018年12月在本院就诊的97例CNSLBP患者作为研究对象,采用随机数字表法分为两组:其中研究组67例,男26例,女41例;年龄40~74岁,平均(51.67±7.28)岁;疼痛持续时间6~63个月,平均(13.46±6.13)个月。展开更多
基金Project supported by the National Natural Science Foundation of China(Grant No.62201620)the Outstanding Youth Program of Education Department of Hunan(Grant No.21B0228)+2 种基金Changsha Municipal Natural Science Foundation(Grant No.kq2202293)Hunan Students’Platform for innovation and entrepreneurship training program(Grant No.S202210538069)the Research Fund of Central South University of Forestry and Technology(Grant No.1121001703).
文摘A hybrid linear amplifier is inserted at the output of the source-in-the-middle distribution protocol to overcome the shortcomings of the transmission distance.The modified protocol aims to maintain a high key rate for long-distance transmission under high noise.It has the potential to significantly broaden the application range of the continuous variable quantum key distribution protocol.The effects of amplifier parameters and noise on the modified protocol are analyzed in detail with regard to applying it to a practical system.To make the simulation more realistic,the effect of finite size on the new protocol is taken into account.It will serve as a guideline for the future use of hybrid linear amplifiers.Different parameters can be adjusted to achieve the best performance for key rates of different quantum channels.
文摘研究[1-2]显示,结构化运动疗法是治疗慢性非特异性腰痛(chronic nonspecific low back pain,CNSLBP)的有效和经济方式,但较少见用单一特点运动疗法治疗CNSLBP的报道。本研究通过腰伸肌力量训练治疗CNSLBP患者,探讨其是否可增加患者矢状位脊柱活动性、改善疼痛评分和功能障碍,现报告如下。1资料与方法1.1一般资料选择2017年1月~2018年12月在本院就诊的97例CNSLBP患者作为研究对象,采用随机数字表法分为两组:其中研究组67例,男26例,女41例;年龄40~74岁,平均(51.67±7.28)岁;疼痛持续时间6~63个月,平均(13.46±6.13)个月。