全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Xiangyang Xiao , Keqin Liu , Qing Zhao
来源:[J].EURASIP Journal on Advances in Signal Processing(IF 0.807), 2009, Vol.2009 (1), pp.1-8Springer
摘要:Abstract(#br)We take a stochastic optimization approach to opportunity tracking and access in self-similar primary traffic. Based on a multiple time-scale hierarchical Markovian model, we formulate opportunity tracking and access in self-similar primary traffic as a Partially Obs...
作者:Keqin Liu , Menglong Li ...
来源:[J].Computational Biology and Chemistry(IF 1.793), 2017Elsevier
摘要:Abstract(#br)Dysregulated and reprogrammed metabolism is one of the most important characteristics of cancer, and exploiting cancer cell metabolism can aid in understanding the diverse clinical outcomes for patients. To investigate the differences in metabolic pathways among pati...
作者:Pouya Tehrani , Keqin Liu , Qing Zhao
来源:[J].Journal of the Franklin Institute(IF 2.418), 2012, Vol.349 (3), pp.985-1010Elsevier
摘要:Abstract(#br)We consider the design of opportunistic spectrum access (OSA) strategies that allow secondary users to search for and exploit spectrum opportunities in unslotted primary systems. The traffic of the primary system in each channel is modeled by a continuous time Markov...
作者:Keqin Liu , Jacqueline Chyr ...
来源:[J].Methods(IF 3.641), 2016Elsevier
摘要:Abstract(#br)The availability of high-throughput genomic assays and rich electronic medical records allows us to identify cancer subtypes with greater accuracy and resolution. The integration of multiplatform, heterogenous, and high dimensional data remains an enormous challenge ...
作者:Keqin Liu , Menglong Li
来源:[J].Chemometrics and Intelligent Laboratory Systems(IF 2.291), 2015, Vol.146, pp.464-471Elsevier
摘要:Abstract(#br)In clinical research, DNA microarrays are widely applied in the identification of the oncogenes, which are differentially expressed between two clinical states and considered as predictors for the cancer prognosis. Due to the heterogeneity of clinical samples, t...
作者:Keqin Liu , Shenqiang Yan ...
来源:[J].Translational Stroke Research(IF 1.939), 2016, Vol.7 (3), pp.186-191Springer
摘要:Abstract(#br)The present study investigates the association between hour-to-hour blood pressure (BP) variability and severe hemorrhagic transformation (HT) after intravenous thrombolysis (IVT) during hyperacute stage. We analyzed hour-to-hour BP measurement within 24 h after...
作者:Keqin Liu , Xiaoyun Ye
来源:[J].Frontiers in Psychiatry, 2018, Vol.9DOAJ
摘要:BackgroundIt remains unclear whether cerebral microbleeds (CMBs) are associated with depression in the general elderly population. We thus performed a meta-analysis to evaluate the relationship between depression and CMBs.MethodsA systematic literature search was conducted i...
作者:Keqin Liu , David S. Liebeskind
来源:[J].Stroke(IF 6.158), 2015, Vol.46 (5), pp.1359-1361Wolters Kluwer
摘要:BACKGROUND AND PURPOSE—: We aim to investigate whether lower admission serum calcium levels are associated with hemorrhagic transformation (HT) after intravenous thrombolysis (IVT). METHODS—: A total of 362 patients treated with IVT was divided into 4 quartiles based on admi...
作者:Keqin Liu , Jin Cao ...
来源:[J].Medicine(IF 4.233), 2015, Vol.94 (30), pp.e1132-e1132Wolters Kluwer
摘要:ABSTRACT: We aim to investigate whether the phenomenon of “sudden drop” in blood pressure (BP) within the first 2 hours is associated with vessel recanalization.We retrospectively examined clinical and imaging data from a consecutive series of patients with stroke with large...

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