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Measuring BGP AS Path Looping(BAPL) and Private AS Number Leaking(PANL)

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Tsinghua Science and Technology 2018年第1期23卷 22-34页

作者： shenglin zhang Ying Liu Dan Pei Baojun Liu Institute for Network Sciences and Cyberspace Tsinghua University Department of Computer Science and Technology Tsinghua University

As a path vector protocol, Border Gateway Protocol （BGP） messages contain an entire Autonomous System （AS） path to each destination for breaking arbitrary long AS path loops. However, after observing the global routing data from RouteViews, we find that BGP AS Path Looping （BAPL） behavior does occur and in fact can lead to multi-AS forwarding loops in both IPv4 and IPv6. The number and ratio of BAPLs in IPv4 and IPv6 on a daily basis from August 1,2011 to August 31, 2015 are analyzed. Moreover, the distribution of BAPLs among duration and loop length in IPv4 and IPv6 are also studied. Several possible explanations for BAPL are discussed in this paper. Private AS Number Leaking （PANL） has contributed to 0.20% of BAPLs in IPv4, and at least 1.76% of BAPLs in IPv4 were attributed to faulty configurations and malicious attacks. Valid explanations, including networks of multinational companies, preventing particular AS from accepting routes, also can lead to BAPLs. Motivated by the large number of PANLs that contribute to BAPLs, we also study the number and the ratio of PANLs per day in the 1492 days. The distribution of the private AS numbers in all of the PANLs is concentrated, and most of them are located in the source of the AS paths. The majority of BAPLs resulted from PANLs endure less than one day, and the number of BAPLs which are caused by two or more leaked private ASes are much larger than that of BAPLs which are caused by one leaked private AS. We explain for this phenomenon and give some advices for the operators of ASes.

关键词： forwarding loops BGP AS path private AS number RouteViews traceroute

Building an IPv6 address generation and traceback system with NIDTGA in Address Driven Network

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Science China(Information Sciences) 2015年第12期58卷 14-27页

作者： LIU Ying REN Gang WU JianPing zhang shenglin HE Lin JIA YiHao Institute for Network Sciences and Cyberspace Tsinghua University Tsinghua National Laboratory for Information Science and Technology Department of Computer Science and Technology Tsinghua University

In the design and construction process of Next Generation Internet, it is important to identify the source of each IP packet forwarding accurately, especially for the support of precise fine-grained management,control, traceability and improving the trustworthiness of the Internet. This paper designed a scalable Network Identity(NID) scheme for the Internet users, proposed NIDTGA(Network Identity and Time Generated Address), an IPv6 address generation algorithm embedded NID and time information, then designed and implemented an IPv6 address generation and traceback system based on NIDTGA. The design of NIDTGA, which reflects the length, time and owner attributes of the IP address, can be a good support to ADN(Address Driven Network). At the same time, by embedding the key elements of user identity and time in the IPv6 address,and by taking into account both the traceability and privacy, NIDTGA can provide a technical basis for the establishment of the network trust mechanism, and achieve the traceability of security event.

关键词： network identity IPv6 Address Driven Network IP traceback IP address generation

Lignans are the main active components of Schisandrae Chinensis Fructus for liver disease treatment:a review

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Food Science and Human Wellness 2024年第5期13卷 2425-2444页

作者： Ke Fu Shu Dai Cheng Ma Yafang zhang shenglin zhang Cheng Wang Lihong Gong Honglin Zhou Yunxia Li State Key Laboratory of Southwestern Chinese Medicine Resources Key Laboratory of Standardization for Chinese Herbal MedicineMinistry of EducationSchool of PharmacyChengdu University of Traditional Chinese MedicineChengdu 611137China

As a traditional Chinese herbal medicine,Schisandrae Chinensis Fructus(SC)has been used in medicine and food industry due to its health care and therapeutic *** the past 20 years,the use of SC and its active ingredient lignans in the prevention and treatment of liver diseases has been increasing,and their hepatoprotective effects has increased the interest of the public and ***,in the present work,we first determined the effectiveness of SC in the treatment of liver diseases such as metabolic associated fatty liver disease,alcoholic liver disease,cholestatic liver disease and acute liver ***,the pharmacological effects and molecular mechanisms of lignans,the active components of SC,for liver disease treatment were comprehensively summarized for the first *** results showed that the lignans in SC could achieve hepatoprotective effects by regulating lipid metabolism,anti-fibrosis,anti-inflammation,anti-oxidation,anti-tumor and regulating bile acid *** mechanism mainly involved adenosine 5’-monophosphate-activated protein kinase,endoplasmic reticulum stress,sterol regulatory element binding protein 1c,autophagy,transforming growth factor-β,mitogen-activated protein kinase,microRNA,nuclear factor kappa-B,nuclear factor erythroid-2-related factor 2,heat shock proteins and pregnane X receptor signaling *** results can lay a scientific foundation for the development of hepatoprotective drugs or functional foods from SC/lignans.

关键词： Schisandrae Chinensis Fructus Lignans Hepatoprotection Pharmacological effects Molecular mechanism

Building an IPv6 address generation and traceback system with NIDTGA in Address Driven Network

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Science China Chemistry 2015年第12期58卷 10-23页

关键词： network identity IPv6 Address Driven Network IP traceback IP address generation

Amazing‘Rainbows’Across Steep Valleys Engineer Leads Team in Building Bridges in Mountainous Guizhou

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Women of China 2020年第12期 14-16页

作者： zhang JIAMIN zhang shenglin 不详

zhang shenglin,chief engineer with Guizhou Bridge Construction Group Co.,Ltd., cannotremember how many bridges she has designed during the past 27 years. But her heart is filled withdelight every time her team completes, under her leadership, the construction of a bridge. For zhang,it's like a dream coming *** nearly three decades, people the world over have been amazed bythe unique beauty and solid structures of the bridges (built by zhang and her team), which look like"rainbows" across steep valleys in Guizhou's mountainous areas.

关键词：桥梁建设总工程师贵州有限责任公司

Log Anomaly Detection Through GPT-2 for Large Scale Systems

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ZTE Communications 2023年第3期21卷 70-76页

作者： JI Yuhe HAN Jing ZHAO Yongxin zhang shenglin GONG Zican Nankai University Tianjin 300071China ZTE Corporation Shenzhen 518057China

As the scale of software systems expands,maintaining their stable operation has become an extraordinary *** logs are semi-structured text generated by the recording function in the source code and have important research significance in software service anomaly *** log anomaly detection methods mainly focus on the statistical characteristics of logs,making it difficult to distinguish the semantic differences between normal and abnormal logs,and performing poorly on real-world industrial log *** this paper,we propose an unsupervised framework for log anomaly detection based on generative pre-training-2(GPT-2).We apply our approach to two industrial *** experimental results on two datasets show that our approach outperforms state-of-the-art approaches for log anomaly detection.

关键词： hybrid beamforming hybrid architecture weighted mean square error manifold optimization dynamic subarrays

The antiemetic effects of magnetotherapy plus granisetron hydrochloride versus granisetron hydrochloride in patients with chemotherapy

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The Chinese-German Journal of Clinical Oncology 2010年第9期9卷 543-546页

作者： Yongjun zhang shenglin Ma Aiqin zhang Yan Sun Wenlong Bao Department of Integrated Traditional and Western Medicine Zhejiang Cancer Hospital Hangzhou 310022 China

Objective:The aim of this study was to observe and compare the antiemetic effectiveness and adverse events of magnetotherapy plus 5-hydroxytryptamine (5-HT3) receptor inhibitor granisetron hydrochloride vs granisetron hydrochloride alone in patients with ***:Sixty-four patients were randomized to receive either granisetron hydrochloride alone (control group:granisetron hydrochloride 3 mg intervenous infusion before chemotherapy, from the 1st day of chemotherapy course until the day after chemotherapy course completed) or magnetotherapy plus granisetron hydrochloride (treatment group:the same granisetron hydrochloride regimen plus rotatory magnetotherapy of 1 every day after chemotherapy for 5 begin with chemotherapy).Baseline characteristics were similar in both *** patients' emesia was evaluated according to WHO's *** density of 5-HT3 was detected by enzyme-linked immunosorbent assay (ELISA).Results:In the treatment of acute vomiting, there was no significant difference between two groups (P>0.05), but in the treatment of tardive vomiting, the effectiveness in treatment group was better than that in control group (P0.05).Conclusion:Magnetotherapy plus granisetron hydrochloride provide better effectiveness than granisetron hydrochloride alone, and both therapies have synergistic *** adverse events didn't raised in treatment group.

关键词： magnetotherapy 5-hydroxytryptamine (5-HT3) receptor inhibitor chemotherapy vomiting

Research and Analysis of Robust Decoupling Control of Hydraulic Looper System

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Research and Analysis of Robust Decoupling Control of Hydrau...

论读者向作者的转换——从交互的角度看“通过阅读学写作”

第32届中国控制与决策会议

作者： Boqun Li Junjie Wang Lin Wang shenglin zhang School of Electronic Information Engineering University of Science and Technology Liaoning

The quality of the control of looper system can directly affect the width,thickness and other performance of the *** is difficult to maintain the speed matching relation between each stand in a finishing mil due to the decrease of the speed of dynamic bite steel of main drive system and external interference in rolling process,so we need to set up hydraulic looper system to maintain constant small tension *** at the characteristics of nonlinear,multi constraint and strong coupling of hydraulic looper system,its mathematical model has been established based on 1700 *** a robust controller is designed using Hinfinity mixed sensitivity method for system uncertainty of dynamic model parameter perturbation and external disturbance to insure the robus stability and robust *** this paper,the linear model of hydraulic looper system is established on the bas of practical *** of the limitations of conventional PID decoupling control,an intelligent algorithm callec robust decoupling control is *** results of decoupling control show that the algorithm is superior to the conventional PID decoupling control in response speed and anti-interference ability.

关键词： height and tension modeling decoupling mixed sensitivity H-infinity control

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外语教学 2005年第4期26卷 57-59页

作者：张省林湖南理工学院外语系湖南岳阳414006

阅读与写作不是两个分离的行为,而是同一过程的两个方面。通过阅读学写作,要学会站在作者的角度去阅读和站在读者的角度去写作。本文通过对阅读和写作活动中各种读写交互关系的分析,揭示了阅读-写作教学中认识和把握读写之间的交互性是... 详细信息

阅读与写作不是两个分离的行为,而是同一过程的两个方面。通过阅读学写作,要学会站在作者的角度去阅读和站在读者的角度去写作。本文通过对阅读和写作活动中各种读写交互关系的分析,揭示了阅读-写作教学中认识和把握读写之间的交互性是帮助学生学好写作、提高写作能力的关键,并提供了可供参考的读写交互训练。

关键词：写作阅读交互作者读者转换