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Adaptive and augmented active anomaly detection on dynamic network traffic streams

Frontiers of Information Technology & Electronic Engineering 2024年第3期25卷 446-460页

作者： Bin LI yijie wang Li CHENG National Key Laboratory of Parallel and Distributed Computing College of ComputerNational University of Defense TechnologyChangsha 410073China College of System Engineering National University of Defense TechnologyChangsha 410073China

Active anomaly detection queries labels of sampled instances and uses them to incrementally update the detection model,and has been widely adopted in detecting network ***,existing methods cannot achieve desirable performance on dynamic network traffic streams because(1)their query strategies cannot sample informative instances to make the detection model adapt to the evolving stream and(2)their model updating relies on limited query instances only and fails to leverage the enormous unlabeled instances on *** address these issues,we propose an active tree based model,adaptive and augmented active prior-knowledge forest(A3PF),for anomaly detection on network trafic streams.A prior-knowledge forest is constructed using prior knowledge of network attacks to find feature subspaces that better distinguish network anomalies from normal *** one hand,to make the model adapt to the evolving stream,a novel adaptive query strategy is designed to sample informative instances from two aspects:the changes in dynamic data distribution and the uncertainty of *** the other hand,based on the similarity of instances in the neighborhood,we devise an augmented update method to generate pseudo labels for the unlabeled neighbors of query instances,which enables usage of the enormous unlabeled instances during model *** experiments on two benchmarks,CIC-IDS2017 and UNSW-NB15,demonstrate that A3PF achieves significant improvements over previous active methods in terms of the area under the receiver operating characteristic curve(AUC-ROC)(20.9%and 21.5%)and the area under the precision-recall curve(AUC-PR)(44.6%and 64.1%).

关键词： Active anomaly detection Network traffic streams Pseudo labels Prior knowledge of network attacks

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Superhydrophobic Co/Fe sulfide nanoparticles and single-atoms doped carbon nanosheets composite air cathode for high-performance zinc-air batteries

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Journal of Energy Chemistry 2024年第9期96卷 568-577页

作者： Yan Tan yijie wang Aoshuang Li Xiucai Jiang Yuzhong Zhang Chuanwei Cheng Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and EngineeringTongji UniversityShanghai 200092China

Development of a high-performance bifunctional catalyst is essential for the actual implementation of zinc-air batteries in practical ***,a bifunctional cathode of Co_(3)S_(4)/FeS heterogeneous nanoparticles embedded in Co/Fe single-atom-loaded nitrogen-doped carbon nanosheets is ***-iron sulfides and single atomic sites with Co-N_(4)/Fe-N_(4)configurations are confirmed to coexist on the carbon matrix by EXAFS spectroscopy.3D self-supported super-hydrophobic multiphase composite cathode provides abundant active sites and facilitates gas–liquid-solid three-phase interface reactions,resulting in excellent electrocatalytic activity and batteries performance,i.e.,an OER overpotential(η_(10))of 260 mV,a half-wave potential(E_(1/2))of 0.872 V for ORR,aΔE of 0.618 V,and a discharge power density of 170 mW cm^(−2),a specific capacity of 816.3 mAh g^(−1).DFT analysis shows multiphase coupling of sulfide heterojunction through single-atomic metal doped carbon nanosheets reduces offset on center of electronic density of states before and after oxygen adsorption,and spin density of adsorbed oxygen with same spin orientation,leading to weakened charge/spin interactions between adsorbed oxygen and substrate,and a lowered oxygen adsorption energy to accelerate OER/ORR.

关键词： Zn-air battery Superhydrophobic interface Metal sulfide Heterostructure Spin density

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3'-Deoxyadenosin alleviates methamphetamine-induced aberrant synaptic plasticity and seeking behavior by inhibiting the NLRP3 inflammasome

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Neural Regeneration Research 2024年第10期19卷 2270-2280页

作者： Yize Qi Yao Zhou Jiyang Li Fangyuan Zhu Gengni Guo Can wang Man Yu yijie wang Tengfei Ma Shanwu Feng Li Zhou Institute for Stem Cell and Neural Regeneration and Key Laboratory of Cardiovascular&Cerebrovascular Medicine School of PharmacyNanjing Medical UniversityNanjingJiangsu ProvinceChina Department of Anesthesiology The Second People’s Hospital of LianyungangLianyungangJiangsu ProvinceChina Department of Anesthesiology Women’s Hospital of Nanjing Medical UniversityNanjing Maternity and Child Health Care HospitalNanjingJiangsu ProvinceChina

Methamphetamine addiction is a brain disorder characterized by persistent drug-seeking behavior, which has been linked with aberrant synaptic plasticity. An increasing body of evidence suggests that aberrant synaptic plasticity is associated with the activation of the NOD-like receptor family pyrin domain containing-3(NLRP3) inflammasome. 3′-Deoxyadenosin, an active component of the Chinese fungus Cordyceps militaris, has strong anti-inflammatory effects. However, whether 3′-deoxyadenosin attenuates methamphetamine-induced aberrant synaptic plasticity via an NLRP3-mediated inflammatory mechanism remains unclear. We first observed that 3′-deoxyadenosin attenuated conditioned place preference scores in methamphetamine-treated mice and decreased the expression of c-fos in hippocampal neurons. Furthermore, we found that 3′-deoxyadenosin reduced the aberrant potentiation of glutamatergic transmission and restored the methamphetamine-induced impairment of synaptic plasticity. We also found that 3′-deoxyadenosin decreased the expression of NLRP3 and neuronal injury. Importantly, a direct NLRP3 deficiency reduced methamphetamine-induced seeking behavior, attenuated the impaired synaptic plasticity, and prevented neuronal damage. Finally, NLRP3 activation reversed the effect of 3′-deoxyadenosin on behavior and synaptic plasticity, suggesting that the anti-neuroinflammatory mechanism of 3′-deoxyadenosin on aberrant synaptic plasticity reduces methamphetamine-induced seeking behavior. Taken together, 3′-deoxyadenosin alleviates methamphetamine-induced aberrant synaptic plasticity and seeking behavior by inhibiting the NLRP3 inflammasome.

关键词： 3′-deoxyadenosin hippocampus long-term potentiation methamphetamine NOD-like receptor family pyrin domain containing-3(NLRP3)inflammasome synaptic plasticity

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Research Progress and Suggestions on China’s Drug Registration Management Based on CiteSpace Knowledge Maps

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Asian Journal of Social Pharmacy 2024年第3期19卷 216-224页

作者： Li Yuan wang yijie wang Shuling School of Business Administration Shenyang Pharmaceutical UniversityShenyang 110016China

Objective To analyze the research status and hot spots in the field of drug registration in China,and to provide some suggestions for the follow-up *** CiteSpace was used to conduct literature quantitative analysis on 684 related articles from 2012 to 2022,and the knowledge map was *** on this,the main characteristics and development trends of the related studies were *** and Conclusion The number of articles published was closely related to the regulatory policy of drug registration *** authors of these articles did not have good ***,research hot spots were closely related to the actual work,which was mainly around the improvement of the review and approval policy,encouraging innovative drug research and development,improving the level of new drug development and other *** follow-up studies should further strengthen the continuity of research and inter-agency *** addition,biomedical registration may become a new research focus in the future.

关键词： drug registration management application for declaration review and approval knowledge map CiteSpace

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Biological perspectives in geotechnics:Application and monitoring

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第7期16卷 2854-2878页

作者： Partha Narayan Mishra Surabhi Jain Thierry Bore Ilhan Chang Yeong-Man Kwon yijie wang Hirak Ranjan Dash Ashutosh Kumar Satyam Tiwari Ningjun Jiang Sarat Kumar Das Alexander Scheuermann Department of Civil Engineering Indian Institute of Technology KanpurKanpur208016India School of Civil Engineering University of QueenslandSt LuciaQLD4072Australia Department of Civil Engineering Indian Institute of Technology DhanbadDhanbad826004India Department of Civil System Engineering Ajou UniversitySuwon-si16499Republic of Korea School of Engineering and IT University of New South WalesCanberraACT2600Australia Department of Civil and Environmental Engineering Northwestern UniversityEvanstonIL60208USA Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong KongChina National Forensic Sciences University New Delhi110085India Southeast University Nanjing211189China

This paper builds on exploring the applications of biomediated pathways to solve geotechnical ***,the state of the art of biological remediation strategies including microbial remediation and phytoremediation have been introduced and critically reviewed in the context of decontaminating the ***,biopolymerisation,biomineralisation and bioneutralisation processes have been depicted with a special emphasis on the applications including but not limited to soil stabilisation,soil erosion prevention,anti-desertification and pH *** of these methods have their own limitations and bottlenecks while scaling up,and these challenges have been summarised and some possible paths to overcome the challenges have also been *** state of the art of electromagnetic(EM)monitoring methods to capture the effects of biomediation on spatio-temporal soil properties are then highlighted as a non-invasive and rapid pathway to track the progress of biomediated soil ***,each of the technologies discussed have been evaluated for their maturity level using the principles of technology readiness level(TRL).A majority of the technologies amounting to around 77%are still in the TRL 4e7,*** the valley of *** is thus evident that development of these technologies needs to be supported with appropriate funding for improving their maturity to a level of industrial deployment.

关键词： Biogeotechnics Bioremediation Phytoremediation Biopolymers Biomineralisation Electromagnetic(EM)methods technology readiness level(TRL)

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冷季黑龙江省温带气旋影响下中尺度降水带特征

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高原气象 2024年第5期43卷 1216-1233页

作者：王艺杰赵宇赵玲南京信息工程大学气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心/气候与环境变化国际合作联合实验室江苏南京210044 黑龙江省气象台黑龙江哈尔滨150028

基于2010-2021年黑龙江省9部C波段多普勒雷达观测和常规资料,结合欧洲中期天气预报中心(European Center for Medium-RangeWeather Forecasts,ECMWF)0.25°×0.25°的1 h间隔的ERA5再分析资料,统计分析了黑龙江省温带气旋暴雪过程中尺... 详细信息

基于2010-2021年黑龙江省9部C波段多普勒雷达观测和常规资料,结合欧洲中期天气预报中心(European Center for Medium-RangeWeather Forecasts,ECMWF)0.25°×0.25°的1 h间隔的ERA5再分析资料,统计分析了黑龙江省温带气旋暴雪过程中尺度降水带的类型和活动特征,基于典型个例对比分析了两种主要中尺度降水带的环境场异同。结果表明:(1)中尺度降水带主要分为单带状、多带状、短暂带状和非带状;中尺度降水带主要分布在黑龙江南部和东北部,位于地面气旋的西北和东北象限,距离气旋中心900 km范围内,且主要发生在气旋的锢囚阶段;运动方式主要是横向平移与混合。(2)不同类型中尺度降水带降水强度的差异可以很好地从物理量的垂直廓线上体现出来,单带状低层比湿最大,低层锋生最强,造成的降水最强;而非带状低层锋生弱于单带状,最强比湿在800hPa附近,降水范围大,强度弱于单带状。(3)个例分析表明,单带状和多带状中尺度降水带均位于850hPa强暖平流的北侧和地面气旋的东北象限、处于弱的湿对称稳定或湿对称不稳定环境中,中尺度降水带的走向与锋生区平行。不同之处为单带状的形成伴随着低层低涡和地面气旋的快速发展和移动,变形场导致强锋生,上升运动集中在小范围,而多带状低层低涡和地面气旋少动、强度变化不大,变形场较弱,锋生较为浅薄,但高空辐散和低层暖平流更强,造成的上升运动范围更大,出现多个上升运动中心,对应多个小带。

关键词：温带气旋中尺度降水带锋生湿对称不稳定

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用于相敏SD-OCT的大动态范围合成波长相位解包裹方法

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光学学报 2024年第3期44卷 1-8页

作者：宋泽国王毅王一洁马振鹤东北大学秦皇岛分校控制工程学院河北秦皇岛066004 苏州中科行智智能科技有限公司江苏苏州215000

针对合成波长方法动态范围较小的问题,提出一种用于相敏谱域光学相干层析(PSSD-OCT)的大动态范围合成波长相位解包裹方法,解决了传统合成波长方法的相位包裹限制问题,实现了大动态范围、快速及高灵敏度的PSSD-OCT成像。通过选取全长度... 详细信息

针对合成波长方法动态范围较小的问题,提出一种用于相敏谱域光学相干层析(PSSD-OCT)的大动态范围合成波长相位解包裹方法,解决了传统合成波长方法的相位包裹限制问题,实现了大动态范围、快速及高灵敏度的PSSD-OCT成像。通过选取全长度干涉光谱和位于光谱仪中间的半长度干涉光谱,计算合成相位缺失的周期数;利用全长度干涉光谱及半长度干涉光谱解调结果的分段组合,消除易受噪声影响的相位周期数±1跳变问题。通过阶差规、硬币及电路板的成像实验,证明该方法可以用于大动态范围(毫米级)的高灵敏度位移解调。

关键词：相干光学相敏谱域光学相干层析合成波长相位解包裹动态范围

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物质—观念视域下育龄群体的多孩生育意愿——基于CGSS2021问卷实验的分析

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社会科学 2024年第1期 157-167页

作者：王毅杰白杨河海大学社会学系

当前我国已迈入低生育社会,探究育龄群体生育意愿真实影响因素、出台相应政策、释放多孩生育潜力是应对人口问题的重要举措。基于2021年中国综合社会调查问卷实验模块的数据,从物质条件和观念因素两个层面探究其对多孩生育意愿的影响,... 详细信息

当前我国已迈入低生育社会,探究育龄群体生育意愿真实影响因素、出台相应政策、释放多孩生育潜力是应对人口问题的重要举措。基于2021年中国综合社会调查问卷实验模块的数据,从物质条件和观念因素两个层面探究其对多孩生育意愿的影响,研究发现:居民对二孩生育持略微开放态度,但三孩生育意愿较为消极。物质层面的家庭收入、父母照料支持和优质育儿服务均能提高多孩生育意愿。就观念而言,性别偏好不再影响多孩生育意愿,但传统性别分工观念仍有着正向影响,且对家庭收入起正向调节作用。异质性检验发现,物质层面的城乡异质性小于性别,城乡二元生育格局发生变化,经济在城市二孩生育意愿上的效用大于农村;父母提供隔代照料会增加女性的二孩生育意愿,当经济能力允许时,男性比女性更期望生育三孩。研究结果表明,生育政策应着力于有一定潜力的二孩生育,推动支持型的家庭生育政策、建设育儿友好型社会、建立整体性的生育支持体系是走出低生育陷阱的主要方向。

关键词：物质观念多孩生育意愿生育政策问卷实验

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购买确定性:高考家庭志愿填报的付费实践及其价值生成

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中国青年研究 2024年第5期 110-118页

作者：王毅杰李欣悦河海大学社会学系

文凭社会下教育被赋予“地位竞逐”功能而称为“稀有物品”,其不确定性和层级化使得教育焦虑成为现代化转型以来难以回避的个人困扰与公共议题。文章基于对嵌入于升学序列的高考志愿填报付费市场的观察,发现家庭采用付费行为是在不确定... 详细信息

文凭社会下教育被赋予“地位竞逐”功能而称为“稀有物品”,其不确定性和层级化使得教育焦虑成为现代化转型以来难以回避的个人困扰与公共议题。文章基于对嵌入于升学序列的高考志愿填报付费市场的观察,发现家庭采用付费行为是在不确定性下对“确定性”的寻求,这种寻求是家庭对“缓解升学紧张”“弥合信息区隔”“指导发展航向”需求的体现。从价值和时间意义上,购买结果呈现的“有用-无用”评价分化,揭示出社会情境下大众购买确定性的背后隐含着对未知恐惧的社会心态,即追寻确定性实际上只是对不确定性程度的衡量,是一种工具性上可能无用,但情绪上有用的行为。文章希望能够有助于教育消费研究领域的知识积累和思考优化。

关键词：购买确定性不确定性高考志愿填报付费价值

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地方性文化的力量:张謇教育思想与区域县中繁荣

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复旦教育论坛 2024年第1期22卷 13-21页

作者：丁百仁王毅杰河海大学社会学系江苏南京211100

县中是县域教育的支柱和地方发展的希望所在,但近年来县中的师生与制度结构失去了比较优势,陷入困境。在建设教育强国的蓝图下,县中如何重整旗鼓?本文基于对全国知名县中聚集地——南通市的调查,借助强文化范式框架,探讨张謇教育思想何... 详细信息

县中是县域教育的支柱和地方发展的希望所在,但近年来县中的师生与制度结构失去了比较优势,陷入困境。在建设教育强国的蓝图下,县中如何重整旗鼓?本文基于对全国知名县中聚集地——南通市的调查,借助强文化范式框架,探讨张謇教育思想何以成为一种与结构力量互补的地方文化力量助推县中发展。张謇教育思想在改革开放初的南通崛起叙事中被激活,锚定科教兴市的第一战略选择,使政府注意力优先分配于教育,从而塑造了县中的良好外部生态和主体积极实践,两者的适配进而带来区域县中繁荣。从文化社会学视角出发,将县中讨论转向地方性,揭示县中发展离不开由本土社会文化传统和资源产生的强大动力,这为其他地方教育振兴提供了启示。

关键词：县中繁荣张謇教育思想强文化范式内外适配文化共享

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