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A GHz chirped amplitude-modulated laser for high-contrast plasma gratings

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High Power Laser Science and Engineering 2024年第1期12卷 74-83页

作者： Michael Valdman Amir hen Gilad Marcus Applied Physics Institute Hebrew University of JerusalemJerusalemIsrael

The generation and control of large amplitude plasma gratings and other plasma structures is of paramount importance for the realization of plasma photonics. Autoresonant excitation of such structures by means of chirped amplitude-modulated lasers has been recently discussed and analyzed theoretically. Here we discuss the parameter space for the realization of such a scheme and describe the laser system that was built towards this goal. We also expand our earlier theoretical study to account for the more realistic case of a moderately focused laser beam, instead of the simplified plane wave approximation.

关键词： amplitude modulation high-frequency modulation autoresonance ion acoustic wave

hen:a novel hybrid explainable neural network based framework for robust network intrusion detection

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Science China(Information Sciences) 2024年第7期67卷 72-90页

作者： Wei WEI Sijin chen Cen chen Heshi WANG Jing LIU Zhongyao chenG Xiaofeng ZOU School of Computer Science and Engineering Xi'an University of TechnologyShaanxi Key Laboratory for Network Computing and Security Technology School of Computer Science and Technology Wuhan University of Science and Technology School of Future Technology South China University of Technology Shenzhen Research Institute of Hunan University School of Computer Science Hunan University of Technology and Business Institute for Infocomm Research (I2R) Agency for Science Technology and Reseach (A*STAR)

With the rapid development of network technology and the automation process for 5G, cyberattacks have become increasingly complex and threatening. In response to these threats, researchers have developed various network intrusion detection systems(NIDS) to monitor network traffic. However, the incessant emergence of new attack techniques and the lack of system interpretability pose challenges to improving the detection performance of NIDS. To address these issues, this paper proposes a hybrid explainable neural network-based framework that improves both the interpretability of our model and the performance in detecting new attacks through the innovative application of the explainable artificial intelligence(XAI)method. We effectively introduce the Shapley additive explanations(SHAP) method to explain a light gradient boosting machine(Light GBM) model. Additionally, we propose an autoencoder long-term short-term memory(AE-LSTM) network to reconstruct SHAP values previously generated. Furthermore, we define a threshold based on reconstruction errors observed during the training phase. Any network flow that surpasses the specified threshold is classified as an attack flow. This approach enhances the framework's ability to accurately identify attacks. We achieve an accuracy of 92.65%, a recall of 95.26%, a precision of 92.57%,and an F1-score of 93.90% on the dataset NSL-KDD. Experimental results demonstrate that our approach generates detection performance on par with state-of-the-art methods.

关键词： explainable artificial intelligence light gradient boosting machine machine learning network intrusion detection Shapley additive explanation hybrid explainable neural network (hen)

Self-assembled high-entropy nitride multilayer coating

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Rare Metals 2024年第6期43卷 2876-2883页

作者： Xiang-Yu Zhang Yan Liu Vasiliy Pelenovich Xiao-Mei Zeng Jie Liu Qiang Wan Alexander Pogrebnjak long-Jian Xue Zhi-Wen chen Yan Lei Bing Yang School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China Hubei JiuFengShan Future Science and Technology Laboratory Wuhan 420000China Institute of Technological Sciences of Wuhan University Wuhan 430072China Hubei Key Laboratory of Electronic Manufacturing and Packaging Integration Wuhan UniversityWuhan 430072China College of Engineering Huazhong Agricultural UniversityWuhan 430070China Sumy State University Sumy 40007Ukraine Institute of Materials Science Slovak University of Technology in BratislavaJána Bottu2591724 TrnavaSlovak Republic Shenzhen Research Institute of Wuhan University Shenzhen 518057China

The development of advanced materials and construction of multilayer structure contribute to enhancing the performance of protective coatings,further improving the industrial productivity and conserving *** this paper,the self-assembled high-entropy nitride(hen)AlCrNbSiTiN multilayer coating was designed by harnessing the plasma distribution characteristics and depos-ited by arc ion plating using single target.

关键词： coating energy multilayer

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幻象救赎:以表演艺术平衡后表演艺术

戏剧艺术 2024年第4期 88-92,93-97,194页

作者：陈敏上海交通大学媒体与传播学院

戏剧演出依赖于观众与演员之间的双向交流,产生“看”与“被看”的相互关系,即凝视。观众观赏方式的不同,形成不同的演出形式和凝视类型。表演艺术与后表演艺术作为两种不同的文化实践形式表现为不同的凝视类型:静观与瞥视。表演艺术的... 详细信息

戏剧演出依赖于观众与演员之间的双向交流,产生“看”与“被看”的相互关系,即凝视。观众观赏方式的不同,形成不同的演出形式和凝视类型。表演艺术与后表演艺术作为两种不同的文化实践形式表现为不同的凝视类型:静观与瞥视。表演艺术的静观产生“审美幻觉”的效果,以真实与表征的二元结构为基础,从而保持艺术的独立性。后表演艺术的瞥视产生“激进幻觉”的效果,则超越这种二元结构产生透明性,从而失去艺术的独立性、沦为纯粹的能指和符号。而在整个演出场域中,后表演艺术相较于表演艺术占据主导。因此,为了打破被后表演艺术包裹的“铁笼”,需要复兴传统的审美静观,以平衡后表演艺术的“透明性”独裁。

关键词：表演艺术后表演艺术凝视幻象救赎

Efficient guiding and focusing of intense laser pulse using periodic thin slits

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Matter and Radiation at Extremes 2024年第4期9卷 29-39页

作者： L.Xu T.W.Huang K.Jiang C.N.Wu H.Peng P.C.hen R.Li H.B.Zhuo C.T.Zhou Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slits have been widely used in laser-plasma interactions as plasma optical components for generating high-harmonic light and controlling laser-driven particle ***,we propose and demonstrate that periodic thin slits can be regarded as a new breed of optical elements for efficient focusing and guiding of intense laser *** fundamental physics of intense laser interaction with thin slits is studied,and it is revealed that relativistic effects can lead to enhanced laser focusing far beyond the pure diffractive focusing *** addition,the interaction of an intense laser pulse with periodic thin slits makes it feasible to achieve multifold enhancement in both laser intensity and energy transfer efficiency compared with conventional *** results provide a novel method for manipulating ultra-intense laser pulses and should be of interest for many laser-based applications.

关键词： laser pulse intense

Packing Dimension of Space-time Anisotropic Gaussian Random Fields

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Acta Mathematica Sinica,English Series 2021年第12期37卷 1826-1840页

作者： hen long.chen Jun WANG Dong Sheng WU School of Statistics and Mathematics Zhejiang Gongshang UniversityHangzhou 310018P.R.China School of Mathematics and Finance Chuzhou UniversityChuzhou 239000P.R.China Department of Mathematical Sciences University of Alabama in HuntsvilleHuntsvilleAlabama 35899USA

Let X={X(t)∈R^(d),t∈R^(N)}be a centered space-time anisotropic Gaussian random field whose components are independent and satisfy some mild *** study the packing dimension of range X(E)under the anisotropic(time variable)metric space(R^(N),ρ)and(space variable)metric space(R^(d),τ),where E⊂R^(N) is a Borel *** results generalize the corresponding results of Estrade,Wu and Xiao(***.,5,41-64(2011))for time-anisotropic Gaussian random fields to space-time anisotropic Gaussian fields.

关键词： Gaussian random fields anisotropic packing dimension packing dimension profile range

Multi-omics analysis reveals the molecular regulatory network underlying the prevention of Lactiplantibacillus plantarum against LPS-induced salpingitis in laying hens

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Journal of Animal Science and Biotechnology 2024年第1期15卷 427-441页

作者： Dan Song Aike Li Bingxu chen Jia Feng Tao Duan Junlin cheng Lixian chen Weiwei Wang Yuna Min College of Animal Science and Technology Northwest A&F UniversityShaanxiPeople’s Republic of China Key Laboratory of Grain and Oil Biotechnology of National Food and Strategic Reserves Administration Academy of National Food and Strategic Reserves AdministrationBeijingPeople’s Republic of China

Background Salpingitis is one of the common diseases in laying hen production, which greatly decreases the economic outcome of laying hen farming. Lactiplantibacillus plantarum was effective in preventing local or systemic inflammation, however rare studies were reported on its prevention against salpingitis. This study aimed to investigate the preventive molecular regulatory network of microencapsulated Lactiplantibacillus plantarum(MLP) against salpingitis through multi-omics analysis, including microbiome, transcriptome and metabolome *** The results revealed that supplementation of MLP in diet significantly alleviated the inflammation and atrophy of uterus caused by lipopolysaccharide(LPS) in hens(P hens of MLP-LPS group were higher than those in hens of LPS-stimulation group(CN-LPS group)(P hens fed diet supplemented with MLP and suffered with LPS stimulation(MLP-LPS group) compared with those in the hens of CN-LPS group(P hens(P < 0.05). The metabolites altered by dietary supplementation with MLP were mainly involved in galactose, uronic acid, histidine, pyruvate and primary bile acid metabolism. Dietary supplementation with MLP inversely regulates LPSinduced differential metabolites such as Lyso PA(24:0/0:0)(P < 0.05).Conclusions In summary, dietary supplementation with microencapsulated Lactiplantibacillus plantarum prevented salpingitis by modulating the abundances of Candidatus_Saccharimonas, Phascolarctobacterium, Ruminococcus_torques_group and Eubacterium_hallii_group w

关键词： Laying hen Metabolome Microbiome Microencapsulated Lactiplantibacillus plantarum Salpingitis Transcriptome

大尺度跨境流域径流预测的迁移学习框架--敏感性分析及在数据稀缺流域的适用性

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Journal of Geographical Sciences 2024年第5期34卷 963-984页

作者：马凯申朝鹏许紫月何大明 Institute of International Rivers and Eco-security Yunnan UniversityKunming 650091China Yunnan Key Laboratory of International Rivers and Transboundary Eco-security Yunnan UniversityKunming 650091China Civil and Environmental Engineering Pennsylvania State UniversityUniversity ParkPAUnited States

The imbalance in global streamflow gauge distribution and regional data scarcity,especially in large transboundary basins,challenge regional water resource *** utilizing these limited data to construct reliable models is of crucial practical *** study employs a transfer learning(TL)framework to simulate daily streamflow in the Dulong-lrrawaddy River Basin(DIRB),a less-studied transboundary basin shared by Myanmar,China,and *** results show that TL significantly improves streamflow predictions:the optimal TL model achieves an average Nash-Sutcliffe efficiency of 0.872,showing a marked improvement in the Hkamti *** data scarcity,TL achieves a mean NSE of 0.817,surpassing the 0.655 of the process-based model MIKE ***,our study reveals the importance of source model selection in TL,as different parts of the flow are affected by the diversity and similarity of data in the source *** learning models,particularly TL,exhibit complex sensitivities to meteorological inputs,more accurately capturing non-linear relationships among multiple variables than the process-based *** gradients(IG)analysis furtherillustrates TL's ability to capture spatial het-erogeneity in upstream and downstream sub-basins and its adeptness in characterizing different flow *** study underscores the potential of TL in enhancing the understanding of hydrological processes in large-scale catchments and highlights its value for water resource management in transboundary basins under data scarcity.

关键词： transfer learning streamflow prediction deep learning model sensitivity data scarcity international river

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沙库巴曲缬沙坦在慢性肾脏病患者中的应用

中华肾脏病杂志 2024年第1期40卷 67-73页

作者：何易钟慧薛痕杨有芹赵敏常晓东陈茂丽付平雅安市人民医院肾脏内科四川大学华西医院雅安医院雅安625000 四川大学华西医院肾脏内科华西肾脏病研究所成都610041

沙库巴曲缬沙坦(sacubitril/valsartan,LCZ696)作为在慢性肾脏病(chronic kidney disease,CKD)患者中应用的新策略,许多证据表明其改善了CKD患者的预后。该综述通过检索万方、中国知网、PubMed等数据库中LCZ696上市以来其在CKD患者中应... 详细信息

沙库巴曲缬沙坦(sacubitril/valsartan,LCZ696)作为在慢性肾脏病(chronic kidney disease,CKD)患者中应用的新策略,许多证据表明其改善了CKD患者的预后。该综述通过检索万方、中国知网、PubMed等数据库中LCZ696上市以来其在CKD患者中应用的相关文章,总结其在生理、病理、药理、临床应用等方面的作用。虽然沙库巴曲的活性产物LBQ657在中度、重度肾损伤和终末期肾脏病患者中的药物累积量较高,在血液透析中不被清除,在腹膜透析中清除极少,但并不影响其安全性。与血管紧张素转换酶抑制剂、血管紧张素受体拮抗剂类药物相比,LCZ696可以提高血压达标率,改善心功能,使肾小球滤过率下降速度减慢,使心血管结局得到改善,且无更多不良事件发生。LCZ696可在各级CKD合并高血压和/或心力衰竭的患者中应用,安全性及耐受性可靠。

关键词：缬沙坦肾功能不全,慢性心力衰竭高血压慢性肾脏病沙库巴曲