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A simple amplify-and-forward opportunistic relaying based on outdated channel state information

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Science China(Information Sciences) 2014年第6期57卷 5-18页

作者： WANG Chao DENG Ke LI YuBo YIN QinYe zhuang lili School of Electronic and Information Engineering Xian Jiaotong University China Taiyuan Satellite Launch Center

Opportunistic relay selection(ORS)is a promising approach for cooperative communications owing to its low complexity by activating only the best ***,in mobile scenarios,the channel state information(CSI)estimated in relay selection may be different from the actual CSI employed in data transmission due to relatively fast varying channels,i.e.,CSI is outdated,which may lead to incorrect relay selection,and hence system performance *** address the problem,this paper designs a relay selection strategy with instaneous and statistical CSIs in amplify-and-forward(AF)cooperative networks whose instantaneous CSIs of two hops employed in relay selection are both *** on high signal-to-noise ratio(SNR)analysis,we propose a distinctive relay selection strategy which can be described as selecting the relay with the asymptotic optimum average symbol error probability(SEP)and outage probability at high *** corresponding asymptotic outage probability and SEP performance analysis are also ***,simulation results not only validate our theoretical analysis,but also show that in asymmetrical outdated CSI scenarios,the proposed strategy achieves better performance than existing relay selection strategies at medium and high SNR values.

关键词： relay selection outdated CSI amplify-and-forward outage probability symbol error probability

Protein phosphorylation associated with drought priming-enhanced heat tolerance in a temperate grass species

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Horticulture Research 2020年第1期7卷 309-320页

作者： Xiaxiang Zhang lili zhuang Yu Liu Zhimin Yang Bingru Huang College of Agro-grassland Science Nanjing Agricultural University210095 NanjingChina Department of Plant Biology Rutgers UniversityNew BrunswickNJ 08901USA

Protein phosphorylation is known to play crucial roles in plant tolerance to individual stresses,but how protein phosphorylation is associated with cross-stress tolerance,particularly drought priming-enhanced heat tolerance is largely *** objectives of the present study were to identify phosphorylated proteins and phosphorylation sites that were responsive to drought priming and to determine whether drought priming-enhanced heat tolerance in temperate grass species involves changes in protein *** analysis of phosphoproteomic profiles was performed on leaves of tall fescue(Festuca arundinacea)exposed to heat stress(38/33°C,day/night)with or without drought priming.A total of 569 differentially regulated phosphoproteins(DRPs)with 1098 phosphorylation sites were identified in response to drought priming or heat stress individually or *** DRPs were nuclear-localized and cytosolic *** analysis detected[GS],[DSD],and[S..E]as major phosphorylation sites in casein kinase-II and mitogen-activated protein kinases regulated by drought priming and heat *** annotation and gene ontology analysis demonstrated that DRPs in response to drought priming and in droughtprimed plants subsequently exposed to heat stress were mostly enriched in four major biological processes,including RNA splicing,transcription control,stress protection/defense,and stress perception/*** results suggest the involvement of post-translational regulation of the aforementioned biological processes and signaling pathways in drought priming memory and cross-tolerance with heat stress in a temperate grass species.

关键词： phosphorylation drought temperate

Association between Metal(loid)Exposure and Risk of Polycystic Ovary Syndrome Mediated by Anti-Müllerian Hormone among Women Undergoing In Vitro Fertilization and Embryo Transfer

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Biomedical and Environmental Sciences 2024年第10期37卷 1107-1116页

作者： Shu Su Mengyuan Ren Yanqiu Feng Changxin Lan Lailai Yan Qun Lu Jia Xu Bin Han lili zhuang Mingliang Fang Bin Wang Hongchu Bao Bo Pan Institute of Reproductive and Child Health Peking University/Key Laboratory of Reproductive HealthNational Health Commission of the People’s Republic of ChinaBeijing 100191China Department of Epidemiology and Biostatistics School of Public HealthPeking UniversityBeijing 100191China Department of Laboratorial Science and Technology School of Public HealthPeking UniversityBeijing 100191China Medical Center for Human Reproduction Beijing Chao-Yang HospitalCapital Medical UniversityBeijing 100020China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China Reproductive Medicine Center The Affliated Yantai Yuhuangding Hospital of Qingdao UniversityYantai 264000ShandongChina Department of Environmental Science and Engineering Fudan UniversityShanghai 200433China Key Laboratory of Epidemiology of Major Diseases(Peking University) Ministry of EducationBeijing 100191China Laboratory for Earth Surface Processes College of Urban and Environmental SciencePeking UniversityBeijing 100871China Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control Faculty of Environmental Science and EngineeringKunming University of Science and TechnologyKunming 650500YunnanChina

Objective To investigate the relationship and potential pathways between metal(loid)exposure and the risk of polycystic ovary syndrome(PCOS)in women of childbearing *** This case-control study included 200 patients with PCOS(cases)and 896 non-PCOS controls with the age of 25-37 *** concentrations of 29 metal(loid)s in the follicular fluid(FF)and clinical indicators in the serum were measured in all *** regression analysis and mediation analysis were conducted to evaluate the associations between metal(loid)exposure and PCOS risk and investigate the possible roles of clinical indicators,*** Logistic regression analysis revealed an association between high copper levels in FF and increased PCOS risk(highest *** quartile:adjusted odds ratio=2.94,95%confidence interval:1.83-4.72).A high luteinizing hormone/follicle-stimulating hormone ratio and elevated levels of testosterone and anti-Müllerian hormone(AMH)were strongly associated with increased PCOS risk induced by high copper *** mediation analysis indicated a mediating effect of AMH in the association between copper exposure and PCOS *** Copper may affect PCOS risk through the hypothalamic-pituitary-ovarian axis,mediated by *** exposure and internal AMH levels are important indicators for early warning of PCOS development.

关键词： Copper Polycystic ovary syndrome Anti-Müllerian hormone Infertility Women of childbearing age

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协作认知网络中鲁棒的分布式波束形成

西安交通大学学报 2013年第12期47卷 84-89页

作者：王超邓科庄丽莉喻晓玲西安交通大学电子与信息工程学院西安710049 中国太原卫星发射中心忻州036300

针对放大转发协作认知网络中信道信息快变导致主用户接收到的干扰功率不受控制的情况,提出了一种鲁棒的分布式波束形成(RDRB)算法。当次用户协作节点上的信道信息有估计误差时,RDRB算法通过设计次用户协作中继节点上的波束形成系数最大... 详细信息

针对放大转发协作认知网络中信道信息快变导致主用户接收到的干扰功率不受控制的情况,提出了一种鲁棒的分布式波束形成(RDRB)算法。当次用户协作节点上的信道信息有估计误差时,RDRB算法通过设计次用户协作中继节点上的波束形成系数最大化目的节点的信噪比,同时保证了对主用户干扰功率和各个中继节点最大发射功率均不超过门限。RDRB算法通过二分法可以搜索到非凸的原问题的次优解,极大地降低了运算量,还可以在信道快变时控制主用户接收到的干扰功率。仿真结果表明,RDRB算法能严格地将主用户接收到的干扰功率控制在既定的干扰门限之下,低于非鲁棒算法2dB以上,从而有效地保护了主用户能正常通信不受干扰。

关键词：协作认知网络放大转发分布式波束形成

文化强国视阈下我国出版“走出去”的现状审思

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出版科学 2018年第2期26卷 23-27页

作者：信莉丽庄严武汉东湖学院武汉430212 中共广西区委党校南宁530021

在"一带一路"倡议框架下,我国出版"走出去"承载着中国文化"走出去"的社会责任。自"丝路书香"工程实施以来,出版"走出去"的战略支点从欧美国家向"一带一路"沿线国家转移。在国家宏观政策的关照下,尽管出版"走出去"取得了显著成绩,但离"... 详细信息

在"一带一路"倡议框架下,我国出版"走出去"承载着中国文化"走出去"的社会责任。自"丝路书香"工程实施以来,出版"走出去"的战略支点从欧美国家向"一带一路"沿线国家转移。在国家宏观政策的关照下,尽管出版"走出去"取得了显著成绩,但离"走进去"还有一定的距离。在文化强国视阈下,出版"走出去"应进一步做好海外市场的受众细分工作,在受众本位思路的指导下,加强深耕内容建设,在翻译工作中融入跨文化传播理念,尤其应推动我国的数字出版"走出去"。在为海外用户提供文化内容和阅读服务的同时,讲好中国故事,传播中国智慧。

关键词：出版版权输出数字出版 “一带一路” “走出去”

基于非饱和渗流理论的区域降雨型地质灾害动力学预警方法研究

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北京大学学报（自然科学版） 2008年第2期44卷 212-216页

作者：丛威青李铁锋潘懋庄莉莉北京大学造山带与地壳演化教育部重点实验室北京大学地球与空间科学学院北京100871 中国地质环境监测院北京100081 天津大学建筑学院天津300072

结合无限斜坡稳定性分析模型与Iverson瞬时降雨入渗理论,分析建立起基于非饱和渗流理论的预警模型,并以我国南方典型地区为例进行模型试验。结果表明,该方法能动态预测区域降雨型地质灾害发生发展过程,从而为区域地质灾害预警研究提供... 详细信息

结合无限斜坡稳定性分析模型与Iverson瞬时降雨入渗理论,分析建立起基于非饱和渗流理论的预警模型,并以我国南方典型地区为例进行模型试验。结果表明,该方法能动态预测区域降雨型地质灾害发生发展过程,从而为区域地质灾害预警研究提供了一条更为精确的定量化分析方法。

关键词：降雨型地质灾害区域动力学预警模型非饱和渗流理论

基于绿色城镇群理论的高铁枢纽布点决策评价研究

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城市发展研究 2013年第7期20卷 149-151页

作者：庄莉莉曾坚洪再生天津大学建筑学院

高铁枢纽布点决策是国家进行高铁枢纽规划建设的重要依据,其合理与否直接关系高铁建设的顺利开展,对枢纽效能的充分发挥起到关键作用,并对枢纽运行长期收益产生重要影响,是实现高铁枢纽可持续发展的重要环节。本文在可持续发展理论指导... 详细信息

高铁枢纽布点决策是国家进行高铁枢纽规划建设的重要依据,其合理与否直接关系高铁建设的顺利开展,对枢纽效能的充分发挥起到关键作用,并对枢纽运行长期收益产生重要影响,是实现高铁枢纽可持续发展的重要环节。本文在可持续发展理论指导下,综合借鉴多种区域经济发展相关理论,重点挖掘绿色城镇群理论内涵,分析高铁枢纽对绿色城镇群发展的影响,结合典型高铁枢纽特征,建立高铁枢纽布点决策评价体系。

关键词：绿色城镇群高铁枢纽布点决策评价体系