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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

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

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)

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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

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 ions of plasma il-2 and il-10 in hens of MlP-lPS group were higher than those in hens of lPS-stimulation group(CN-lPS group)(P ion levels of TlR2, MYD88, NF-κB, COX2, and TNF-α were significantly decreased in the 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 ifferentially expressed genes(DEGs) induced by MlP were involved in inflammation, reproduction, and calcium ion transport. At the genus level, the MlP supplementation significantly increased the abundance of Phascolarctobacterium, whereas decreased the abundance of Candidatus_Saccharimonas in lPS challenged hens(P lites 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 lusions 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

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融媒背景下网络自媒体矩阵传播策略

四川省干部函授学院学报 2024年第3期 25-30页

作者：任梦源四川文化产业职业学院组织人事部四川成都610213

融媒体时代,传媒机构的聚合发展逐渐形成了自媒体矩阵。在确定网络自媒体矩阵的主要范式与功能特点的基础上,分析网络自媒体矩阵发展的主要困境,指出限制矩阵传播力发展的难题主要集中在联动、内容、发展三方面,继而提出融媒背景下网络... 详细信息

融媒体时代,传媒机构的聚合发展逐渐形成了自媒体矩阵。在确定网络自媒体矩阵的主要范式与功能特点的基础上,分析网络自媒体矩阵发展的主要困境,指出限制矩阵传播力发展的难题主要集中在联动、内容、发展三方面,继而提出融媒背景下网络自媒体矩阵传播力的提高需围绕优化内容生产,提升自媒体矩阵的内容生产力;强化深融思维,增强自媒体矩阵的渠道扩张力;锚定品牌意识,强化自媒体矩阵的传播表达力,从而推动自媒体矩阵在融媒时代数字浪潮中实现高效率传播和高质量发展。

关键词：数智时代自媒体矩阵信息传播

基于改进ADMM的新能源发电与新能源汽车动态消纳微网控制模型

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计算机应用与软件 2024年第5期41卷 49-53,84页

作者：陈思宏杨俊杰上海电力大学电子与信息工程学院上海201306 上海电机学院上海200090

光伏、风力新能源发电随机性较强导致能源不易消纳,由此提出一种基于改进ADMM的新能源发电与新能源汽车动态消纳微网控制模型。利用留存分析法改进lSTM模型用以预测新能源的发电功率和新能源汽车充电负荷,达到预知供电能力和用电负荷的... 详细信息

光伏、风力新能源发电随机性较强导致能源不易消纳,由此提出一种基于改进ADMM的新能源发电与新能源汽车动态消纳微网控制模型。利用留存分析法改进lSTM模型用以预测新能源的发电功率和新能源汽车充电负荷,达到预知供电能力和用电负荷的目的;通过改进的ADMM模型根据预测供电能力和用户负荷的差额,对新能源汽车充电负荷进行控制,实现新能源发电量动态控制消纳。实验结果表明,该方法相比于传统方法,可以提高57%的能源利用率。

关键词：新能源发电新能源汽车留存分析改进lSTM 改进ADMM 动态控制消纳