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Route Guardian: Constructing Secure Routing Paths in Software-Defined Networking

Tsinghua Science and Technology 2017年第4期22卷 400-412页

作者： Mengmeng Wang Jianwei Liu Jian Mao Haosu Cheng Jie Chen chan qi School of Electronic and Information Engineering Beihang University

Software-Defined Networking（SDN） decouples the control plane and the data plane in network switches and routers, which enables the rapid innovation and optimization of routing and switching configurations. However,traditional routing mechanisms in SDN, based on the Dijkstra shortest path, do not take the capacity of nodes into account, which may lead to network congestion. Moreover, security resource utilization in SDN is inefficient and is not addressed by existing routing algorithms. In this paper, we propose Route Guardian, a reliable securityoriented SDN routing mechanism, which considers the capabilities of SDN switch nodes combined with a Network Security Virtualization framework. Our scheme employs the distributed network security devices effectively to ensure analysis of abnormal traffic and malicious node isolation. Furthermore, Route Guardian supports dynamic routing reconfiguration according to the latest network status. We prototyped Route Guardian and conducted theoretical analysis and performance evaluation. Our results demonstrate that this approach can effectively use the existing security devices and mechanisms in SDN.

关键词： Software-Defined Networking(SDN) network security virtualization capacity-based routing security oriented routing dynamic routing reconfiguration

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考虑自然灾害约束的城市规划模型

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灾害学 2019年第1期34卷 13-16页

作者：戚婵哈尔滨工业大学深圳研究生院广东深圳518055 深圳市土地房产交易中心深圳市广东深圳518055

自然灾害会对城市的建设和人们生活产生巨大负面影响,但是传统城市规划方案抵御自然灾害的能力较低,为此构建一个考虑自然灾害约束的城市规划模型。设定城市规划流程,依照流程明确明确城市规划条件,分析城市灾害风险和防灾能力,通过分... 详细信息

自然灾害会对城市的建设和人们生活产生巨大负面影响,但是传统城市规划方案抵御自然灾害的能力较低,为此构建一个考虑自然灾害约束的城市规划模型。设定城市规划流程,依照流程明确明确城市规划条件,分析城市灾害风险和防灾能力,通过分析结果对城市规划进行设计,实现考虑自然灾害约束的城市规划模型构建。为保证设计有效性,进行仿真试验,试验结果表明,考虑自然灾害约束的城市规划模型比传统城市规划模型自然灾害损害程度降低35%左右,虽然随着灾害程度的严重程度增加,城市规划模型所能起到的效果有所减弱,但与传统方法相比始终占据优势,说明所提方法具有可行性。

关键词：自然灾害城市规划防灾能力灾害风险防灾策略

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CD147, MMP-1, MMP-2 and MMP-9 protein expressions as significant prognostic factors in human prostate cancer

CD147, MMP-1, MMP-2 and MMP-9 protein expressions as signifi...

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第十五届全国泌尿外科学术会议

作者： Wei-de Zhong, Zhao-dong Han, Xue-cheng Bi, Wei-jun qin, Hui-chan He, qi-shan Dai 广州医学院附属广州市第一人民医院

Aim: CD147 and MMPs has been demonstrated to involve in tumor invasion and angiogenesis. The aim of this study was to analyze the clinicopathological characteristics of CD147, MMP-1, MMP-2 and MMP-9 expression levels in human prostate cancer (PCa), and to evaluate their clinical significance in the histologic classification and prognosis of

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Efficacy and safety of moxifloxacin in acute exacerbations of chronic bronchitis and COPD:a systematic review and meta-analysis

Efficacy and safety of moxifloxacin in acute exacerbations o...

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中华医学会呼吸病学年会——2013（第十四次全国呼吸病学学术会议）

作者： Kaixiong LIU Bing XU Li-li TAO Felinda ARIANI Hai-bo DING Jing ZHANG qi-chan LIN Jie-ming QU Department of Pulmonary Medicine Zhongshan HospitalShanghai Medical School of Fudan University Department of Respiratory disease The First Affiliated HospitalFujian Medical University Department of Neurology Fujian Geriatric Hospital Department of Respiratory Medicine Huadong HospitalShanghai Medical School of Fudan University

Introduction To evaluate the efficacy and safety of moxifloxacin in acute exacerbations of chronic bronchitis and chronic obstructive pulmonary disease Methods We searched PubMed,EMBASE,and the Web of Science for relevant *** reviewers extracted data and reviewed the quality of the studies *** primary outcome was clinical sucess at early ***-level data were pooled using a random-effects model when I2 was>50%or a

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沿海城市气候特征对城市雕塑景观侵蚀程度差异分析研究

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环境科学与管理 2017年第12期42卷 47-50,61页

作者：戚婵哈尔滨工业大学深圳研究生院广东深圳518055 深圳市土地房产交易中心广东深圳518040

建筑物集中造成城市空间单一、枯燥和拥挤,城市雕塑作品可带来美化和装饰的作用。以沿海城市的城市雕塑景观为探究对象,研究在沿海气候特征下雕塑的侵蚀程度差异。首先,针对制作雕塑景观的原料砂岩,需进行侵蚀作用模拟实验,选取城市雕... 详细信息

建筑物集中造成城市空间单一、枯燥和拥挤,城市雕塑作品可带来美化和装饰的作用。以沿海城市的城市雕塑景观为探究对象,研究在沿海气候特征下雕塑的侵蚀程度差异。首先,针对制作雕塑景观的原料砂岩,需进行侵蚀作用模拟实验,选取城市雕塑砂岩样本在风驱雨模拟条件下进行风洞侵蚀实验及水岩作用实验;然后,通过对砂岩雕塑样本实现风洞侵蚀模拟实验后,可获知侵蚀量伴随风速增强而增大,对砂岩实现室内水岩作用实验后可知矿物转化量增加,产生矿物量越多表明岩体的抗侵蚀能力越低,会增加雕塑侵蚀程度。通过利用模拟实验实现了对城市雕塑景观侵蚀程度的分析,为保护雕塑作品提供数据支持。

关键词：沿海城市气候特征城市景观雕塑侵蚀

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Effects of Probiotics on Intestinal Bacterial Translocation in Mice Treated with the Immunosuppressant Agent Cyclophosphamide

Effects of Probiotics on Intestinal Bacterial Translocation ...

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中华医学会呼吸病学年会——2013（第十四次全国呼吸病学学术会议）

作者： Kaixiong LIU YANG Jin Jing ZHANG Li-li TAO Xiao-dan WANG Hong-ni JIANG Jie-ming QU qi-chan LIN Department of Pulmonary Medicine Zhongshan HospitalShanghai Medical School of Fudan University Department of Respiratory disease The First Affiliated HospitalFujian Medical University Department of Pulmonary Medicine the Second HospitalAnhui Medical University

Background The aim of this study was to confirm the presence of intestinal bacterial translocation by in mice treated with the immunosuppressant cyclophosphamide, and investigate the effects of probiotic bacteria on intestinal bacterial translocation. Methods Mice received antibiotic decontamination and ingested Escherichia coli expressing green fluorescent protein(GFP) for 7 *** were divided into eight treatment groups(n=10 for each group),and received

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