The elliptic azimuthal anisotropy coefficient(v_(2))of the identified particles at midrapidity(|η|<0.8)was investigated in p-Pb collisions at√s_(NN)=5.02 TeV using a multi-phase transport model(AMPT).The calculat...The elliptic azimuthal anisotropy coefficient(v_(2))of the identified particles at midrapidity(|η|<0.8)was investigated in p-Pb collisions at√s_(NN)=5.02 TeV using a multi-phase transport model(AMPT).The calculations of differential v_(2)based on the advanced flow extraction method of light flavor hadrons(pions,kaons,protons,andΛ)in small collision systems were extended to a wider transverse momentum(p_(T))range of up to 8 GeV/c for the first time.The string-melting version of the AMPT model provides a good description of the measured p_(T)-differential v_(2)of the mesons but exhibits a slight deviation from the baryon v_(2).In addition,we observed the features of mass ordering at low p_(T)and the approximate number-of-constituentquark(NCQ)scaling at intermediate p_(T).Moreover,we demonstrate that hadronic rescattering does not have a significant impact on v_(2)in p-Pb collisions for different centrality selections,whereas partonic scattering dominates in generating the elliptic anisotropy of the final particles.This study provides further insight into the origin of collective-like behavior in small collision systems and has referential value for future measurements of azimuthal anisotropy.展开更多
The utilization and development of urban underground space play a crucial role in optimizing the layout of civic architecture and enhancing the urban ecological environment,which contributes toward increasing the over...The utilization and development of urban underground space play a crucial role in optimizing the layout of civic architecture and enhancing the urban ecological environment,which contributes toward increasing the overall carrying capacity and promoting sustainable development in megacities.To delve into the research progress of urban underground space,knowledge maps were created using the information visualization software VOSviewer.The literature was systematically extracted from three prominent databases,namely,Web of Science,Scopus,and China National Knowledge Infrastructure.According to the bibliometric analysis of the co-citation and core words co-occurrence,the trends and challenges of research on urban underground space were identified.As highlighted by the results obtained,it still remains highly challenging to achieve interdisciplinary collaboration in urban underground space research;the research trends of urban underground space consist of collaborative planning and whole life cycle sustainable development,multisource geological data informatization and resource evaluation,infrastructure design optimization,and intelligent construction.The knowledge map,drawn using bibliometric methods,offers a quantitative analysis of literature retrieval across various levels.It is recognized as an essential tool for exploring and identifying challenges and trends in urban underground space.展开更多
AI已成为公共治理中的重要理论和实践热点,但国内学术界的研究以规范分析为主,这限制了理论检验与循证决策。本文采取系统性文献综述的方式,从Web of Science核心数据库中筛选了153篇英文实证文献,介绍了“AI作为治理对象”和“AI作为...AI已成为公共治理中的重要理论和实践热点,但国内学术界的研究以规范分析为主,这限制了理论检验与循证决策。本文采取系统性文献综述的方式,从Web of Science核心数据库中筛选了153篇英文实证文献,介绍了“AI作为治理对象”和“AI作为治理工具”两条研究进路。前者包括国家战略和治理设计两个研究主题,后者包括技术采纳、组织应用和社会意义3个研究主题,以及相应主题下的多个议题。通过引介相关的研究动态,本文旨在为实证研究设计提供选题、理论和方法上的思路,并为进一步探索前沿提供知识地图。展开更多
目的研究和分析不同氧浓度肺复张配合呼气末正压对肺癌术患者应激反应的影响及术后肺部并发症相关因素。方法选取我院行单侧肺癌根治手术的非小细胞肺癌患者208例作为研究对象,开展回顾性分析,根据氧浓度的不同划分为观察组[124例,吸入...目的研究和分析不同氧浓度肺复张配合呼气末正压对肺癌术患者应激反应的影响及术后肺部并发症相关因素。方法选取我院行单侧肺癌根治手术的非小细胞肺癌患者208例作为研究对象,开展回顾性分析,根据氧浓度的不同划分为观察组[124例,吸入气中的氧浓度分数(fraction of inspiration O_(2),FiO_(2))调至30%]和对照组(84例,FiO_(2)调至80%)。观察2组临床指证、并发症情况及并发症影响因素分析。应用“单一个体的肺部并发症种类数”来区别以往“单一个体单一并发症的总数”,以“泊松概率回归分析探究肺部并发症种类数的影响因素”区别“二元Logisitc回归分析并发症或者预后有无的影响因素”。结果对照组瑞芬太尼用量(1.26±0.32)mg、罗库溴铵用量(78.39±10.59)mg、手术时间(125.92±24.18)min、麻醉时间(152.42±31.23)min、住院时间(5.29±0.72)d均要高于观察组[(1.15±0.35)mg、(71.38±10.35)mg、(113.35±23.67)min、(132.88±28.67)min、(4.45±0.72)d](P<0.05)。观察组胸腔积液有8例(6.45%)、并发症种类数[1种有17例(13.71%),2种有3例(2.42%)]低于对照组[1种有33例(39.29%),2种有16例(19.05%),3种有1例(1.19%)],差异有统计学意义(P<0.05)。影响肺部并发症种类数的因素有分组(不同氧浓度)、吸烟史、饮酒史、高血压、手术部位、糖尿病、肺功能状态、美国麻醉师协会(American Society of Anesthesiologists,ASA)分级、年龄、手术时间、术中血量、皮质醇、促肾上腺皮质激素(adrenocorticotropichormone,ACTH)、瑞芬太尼用量、最大呼气第一秒呼出的气量的容积(forced expiratory volume in one second,FEV1)、最大通气量(maximum ventilatory volume/minute,MVV)、氧合指数。结论低浓度给氧肺复张要优于高浓度,可改善肺功能,促进氧合作用,减少并发症,且应注意肺部并发症的发生是由治疗条件、基础条件、麻醉条件、应激反应多因素影响,以便优化治疗和护理措施。展开更多
基金This work was supported by the Key Laboratory of Quark and Lepton Physics(MOE)in Central China Normal University(Nos.QLPL2022P01,QLPL202106)Natural Science Foundation of Hubei Provincial Education Department(No.Q20131603)+2 种基金National key research,development program of China(No.2018YFE0104700)National Natural Science Foundation of China(No.12175085)Fundamental research funds for the Central Universities(No.CCNU220N003).
文摘The elliptic azimuthal anisotropy coefficient(v_(2))of the identified particles at midrapidity(|η|<0.8)was investigated in p-Pb collisions at√s_(NN)=5.02 TeV using a multi-phase transport model(AMPT).The calculations of differential v_(2)based on the advanced flow extraction method of light flavor hadrons(pions,kaons,protons,andΛ)in small collision systems were extended to a wider transverse momentum(p_(T))range of up to 8 GeV/c for the first time.The string-melting version of the AMPT model provides a good description of the measured p_(T)-differential v_(2)of the mesons but exhibits a slight deviation from the baryon v_(2).In addition,we observed the features of mass ordering at low p_(T)and the approximate number-of-constituentquark(NCQ)scaling at intermediate p_(T).Moreover,we demonstrate that hadronic rescattering does not have a significant impact on v_(2)in p-Pb collisions for different centrality selections,whereas partonic scattering dominates in generating the elliptic anisotropy of the final particles.This study provides further insight into the origin of collective-like behavior in small collision systems and has referential value for future measurements of azimuthal anisotropy.
基金Industry-University-Research Innovation Foundation of Chinese Universities,Grant/Award Number:2020ITA03010National Natural Science Foundation of China,Grant/Award Numbers:41920104007,42227805。
文摘The utilization and development of urban underground space play a crucial role in optimizing the layout of civic architecture and enhancing the urban ecological environment,which contributes toward increasing the overall carrying capacity and promoting sustainable development in megacities.To delve into the research progress of urban underground space,knowledge maps were created using the information visualization software VOSviewer.The literature was systematically extracted from three prominent databases,namely,Web of Science,Scopus,and China National Knowledge Infrastructure.According to the bibliometric analysis of the co-citation and core words co-occurrence,the trends and challenges of research on urban underground space were identified.As highlighted by the results obtained,it still remains highly challenging to achieve interdisciplinary collaboration in urban underground space research;the research trends of urban underground space consist of collaborative planning and whole life cycle sustainable development,multisource geological data informatization and resource evaluation,infrastructure design optimization,and intelligent construction.The knowledge map,drawn using bibliometric methods,offers a quantitative analysis of literature retrieval across various levels.It is recognized as an essential tool for exploring and identifying challenges and trends in urban underground space.
文摘AI已成为公共治理中的重要理论和实践热点,但国内学术界的研究以规范分析为主,这限制了理论检验与循证决策。本文采取系统性文献综述的方式,从Web of Science核心数据库中筛选了153篇英文实证文献,介绍了“AI作为治理对象”和“AI作为治理工具”两条研究进路。前者包括国家战略和治理设计两个研究主题,后者包括技术采纳、组织应用和社会意义3个研究主题,以及相应主题下的多个议题。通过引介相关的研究动态,本文旨在为实证研究设计提供选题、理论和方法上的思路,并为进一步探索前沿提供知识地图。
文摘目的研究和分析不同氧浓度肺复张配合呼气末正压对肺癌术患者应激反应的影响及术后肺部并发症相关因素。方法选取我院行单侧肺癌根治手术的非小细胞肺癌患者208例作为研究对象,开展回顾性分析,根据氧浓度的不同划分为观察组[124例,吸入气中的氧浓度分数(fraction of inspiration O_(2),FiO_(2))调至30%]和对照组(84例,FiO_(2)调至80%)。观察2组临床指证、并发症情况及并发症影响因素分析。应用“单一个体的肺部并发症种类数”来区别以往“单一个体单一并发症的总数”,以“泊松概率回归分析探究肺部并发症种类数的影响因素”区别“二元Logisitc回归分析并发症或者预后有无的影响因素”。结果对照组瑞芬太尼用量(1.26±0.32)mg、罗库溴铵用量(78.39±10.59)mg、手术时间(125.92±24.18)min、麻醉时间(152.42±31.23)min、住院时间(5.29±0.72)d均要高于观察组[(1.15±0.35)mg、(71.38±10.35)mg、(113.35±23.67)min、(132.88±28.67)min、(4.45±0.72)d](P<0.05)。观察组胸腔积液有8例(6.45%)、并发症种类数[1种有17例(13.71%),2种有3例(2.42%)]低于对照组[1种有33例(39.29%),2种有16例(19.05%),3种有1例(1.19%)],差异有统计学意义(P<0.05)。影响肺部并发症种类数的因素有分组(不同氧浓度)、吸烟史、饮酒史、高血压、手术部位、糖尿病、肺功能状态、美国麻醉师协会(American Society of Anesthesiologists,ASA)分级、年龄、手术时间、术中血量、皮质醇、促肾上腺皮质激素(adrenocorticotropichormone,ACTH)、瑞芬太尼用量、最大呼气第一秒呼出的气量的容积(forced expiratory volume in one second,FEV1)、最大通气量(maximum ventilatory volume/minute,MVV)、氧合指数。结论低浓度给氧肺复张要优于高浓度,可改善肺功能,促进氧合作用,减少并发症,且应注意肺部并发症的发生是由治疗条件、基础条件、麻醉条件、应激反应多因素影响,以便优化治疗和护理措施。
