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树网结构上的并行图论算法
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作者 梁维发 陈国良 《计算机研究与发展》 EI CSCD 北大核心 1991年第1期1-8,共8页
本文在分析树网结构的同时,发现了树网上一特殊的传播规律。利用此规律我们给出了在n 阶树网(n×n 个叶结点)上O(nlogn)步的n 阶矩阵乘法算法,此算法具有广泛的应用。运用它可有效地模拟二维网孔模型上一类算法。最后,我们给出了在n... 本文在分析树网结构的同时,发现了树网上一特殊的传播规律。利用此规律我们给出了在n 阶树网(n×n 个叶结点)上O(nlogn)步的n 阶矩阵乘法算法,此算法具有广泛的应用。运用它可有效地模拟二维网孔模型上一类算法。最后,我们给出了在n 阶树网上求n 个顶点无向图的快速桥算法,其时间复杂性为O(log^3n)。 展开更多
关键词 树网结构 并行 图论 算法
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基于功能空间的城市绿地树网结构模式的探讨 被引量:1
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作者 聂磊 《园林科技》 2006年第4期10-14,9,共6页
本文在城市绿地功能空间分析的基础上,对静态属性的结构性绿地和动态属性的过程性绿地进行了功能上的区分。结合树型结构和网络结构的自身优势与缺陷,提出了城市绿地树网型结构模式,并对城市绿地树网结构的特征、优势和研究方向提出了... 本文在城市绿地功能空间分析的基础上,对静态属性的结构性绿地和动态属性的过程性绿地进行了功能上的区分。结合树型结构和网络结构的自身优势与缺陷,提出了城市绿地树网型结构模式,并对城市绿地树网结构的特征、优势和研究方向提出了建议。 展开更多
关键词 城市绿地 功能空间 树网结构 模式
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城市绿地树网结构模式的理论分析 被引量:2
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作者 聂磊 《城市问题》 CSSCI 北大核心 2008年第5期28-33,共6页
在城市绿地功能空间分析的基础上,对静态属性的结构性绿地和动态属性的过程性绿地进行了功能上的区分。结合树型结构和网络结构的自身优势与缺陷,提出了城市绿地树网型结构模式,并对城市绿地树网结构的特征、优势和研究方向提出了建议。
关键词 城市绿地 功能空间 树网结构 模式
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Injections of ginkgo in the treatment of cerebral infarction: a systematic review and network Meta-analysis 被引量:10
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作者 Tan Di Wu Jiarui +4 位作者 Liu Shi Zhang Dan Cui Yingying Zhang Xiaomeng Zhang Bing 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2018年第1期1-11,共11页
OBJECTIVE: To assess the clinical effectiveness and safety of injections of ginkgo (GI) combined with Western Medicine (WM) for cerebral infarction (C/). METHODS; Randomized controlled trials (RCTs) of C/trea... OBJECTIVE: To assess the clinical effectiveness and safety of injections of ginkgo (GI) combined with Western Medicine (WM) for cerebral infarction (C/). METHODS; Randomized controlled trials (RCTs) of C/treated by GI were searched in China National Knowledge Infrastructure Database, Wanfang, China Science and Technology Journal Database, Web of Science, Cochrane library, Embase, PubMed and Chinese Biomedical Literature Database, with the publication data no later than April, 2016. The Co- chrane risk of bias method was used to evaluate the methodological quality of the RCTs. The data were analyzed by Review Manager 5.3, Stata 13.0, and WinBUGS 14 software.RESULTS: Totally 37 RCTs involving 4330 patients were included. By direct comparison, the results of GI group were significantly superior to the routine WM group in the total effective rates [OR = 3.61, 95% CI (2.93, 4.44), P 〈 0.0001], the neural function defect score (NFDS) [MD = - 4.39, 95% CI (- 5.47, - 3.32), P 〈 0.0001]. Network Meta-analysis (NMA) results showed that, between S GIs in efficacy, the difference comparing ginaton injections (GbE) to ginkgo-dipyidamolum injections (GD) [OR = 1.74, 95% CI (0.73, 3.65)], shuxuening injections (SXN) [OR = 1.06, 95% CI (0.609, 1.697)] or ginkgolides in- jections (GK) [OR = 4.711, 95% CI (1.178, 13.21)] reach statistical significance; the difference compar- ing GD to GK reach statistical significance [OR = 2.791, 95% CI (0.866, 6.908)]; the difference com- paring SXN to GK reach statistical significance [OR = 4.537, 95% CI (1.203, 12.41)]. Besides, there was no difference between 4 GIs in NFDS. Proba- bility ranking result showed a great possibility for GK [Surface under the Cumulative Ranking curve (SUCRA) = 80.3%] in improving the total effective rates, which were followed by GD (SUCRA = 73.34%), SXN (SUCRA = 46.59%), GbE (SUCRA = 45.46%), floium ginkgo extract and tertram ethy- pyrazine sodium chloride injections (FT) (SU- CRA = 35.64%). However, GK (SUCRA = 80.3%) or GbE (SUCRA = 69.4%) was better than other GIs in reducing NFDS.GK + WM is the best treatment measures to reduce NFDS in cerebral infarction, which were followed by SXN + WM (SUCRA = 51.6%), GD + WM (SUCRA = 48.1%). CONCLUSION: GIs was more effectiveness on CI than the routine Western Medicine. But based on the limitations of the study, more high-quality ran- domized controlled trials will be necessary. 展开更多
关键词 tnjections Ginkgo biloba Cerebral in-farction Network Meta-analysis REVIEW
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