国外有人给“吸烟”下了个定义:F=F。这里,倘若把“=”稍作“整容”,“=”就可变成一支香烟。两个F则是把Fire(火)和Fool(傻瓜)缩写而成的,放在香烟的两端,就得到F=F的等式及含义:“Two ends on cigarette.one is fire,the othe...国外有人给“吸烟”下了个定义:F=F。这里,倘若把“=”稍作“整容”,“=”就可变成一支香烟。两个F则是把Fire(火)和Fool(傻瓜)缩写而成的,放在香烟的两端,就得到F=F的等式及含义:“Two ends on cigarette.one is fire,the other is fool.”展开更多
目的:系统评价氟18氟代脱氧葡萄糖(^(18)F-FDG)PET/CT对术后血清糖类抗原(CA125)异常升高的卵巢癌患者复发或转移的诊断价值。方法:检索2010年1月至2023年1月英文数据库PubMed、Embase、Cochrane Library(Central)和Web of Science(SCI-...目的:系统评价氟18氟代脱氧葡萄糖(^(18)F-FDG)PET/CT对术后血清糖类抗原(CA125)异常升高的卵巢癌患者复发或转移的诊断价值。方法:检索2010年1月至2023年1月英文数据库PubMed、Embase、Cochrane Library(Central)和Web of Science(SCI-Expanded),以及中文数据库中国知网(CNKI)、维普(VIP)网、万方(Wanfang)网、中国生物医学文献数据库(CBM)中^(18)F-FDG PET/CT对卵巢癌术后血清CA125升高患者复发或转移的诊断价值研究。使用软件为Review Manager5.4的QUADAS-2质量评价工具对纳入的文献进行质量评估。通过Meta-Disc1.4软件提取有效数据,合并效应量,并进行异质性检验。使用Stata14.0软件对所纳入的研究进行文献发表偏倚检验。结果:共纳入7篇文献的研究,对290例卵巢癌患者,进行异质性检验,I2值均<50%,采用固定效应模型合并效应量,结果显示诊断的准确性较高,合并灵敏度、特异度、阳性似然比、阴性似然比和诊断优势比(DOR)的中位数分别为0.95(0.91~0.98)、0.83(0.70~0.92)、4.84(2.82~8.31)、0.07(0.04~0.13)和73.53(28.78~187.90),综合受试者工作特征曲线下面积(AUC)为0.9527,^(18)F-FDGPET/CT对卵巢癌术后血清CA125升高的患者转移与复发的诊断准确率高达95.27%。文献发表偏倚检验显示不存在发表偏倚。结论:^(18)F-FDG PET/CT对诊断卵巢癌术后血清CA125升高的患者转移与复发的准确率较高,能够灵敏、准确地检出卵巢癌术后复发和转移病灶,并及早发现卵巢癌的转移或复发病灶。展开更多
In this paper,we study the geometric ergodicity of continuous time Markov pro-cesses in general state space.For the geometric ergodic continuous time Markov processes,the condition π(f^(p))<∞,p>1 is added.Usin...In this paper,we study the geometric ergodicity of continuous time Markov pro-cesses in general state space.For the geometric ergodic continuous time Markov processes,the condition π(f^(p))<∞,p>1 is added.Using the coupling method,we obtain the existence of a full absorbing set on which continuous time Markov processes are f-geometric ergodic.展开更多
文摘国外有人给“吸烟”下了个定义:F=F。这里,倘若把“=”稍作“整容”,“=”就可变成一支香烟。两个F则是把Fire(火)和Fool(傻瓜)缩写而成的,放在香烟的两端,就得到F=F的等式及含义:“Two ends on cigarette.one is fire,the other is fool.”
基金Supported by the Natural Science Foundation of Hubei Province(2021CFB275)National Natural Science Foundation of China(12301667).
文摘In this paper,we study the geometric ergodicity of continuous time Markov pro-cesses in general state space.For the geometric ergodic continuous time Markov processes,the condition π(f^(p))<∞,p>1 is added.Using the coupling method,we obtain the existence of a full absorbing set on which continuous time Markov processes are f-geometric ergodic.