检索结果-内蒙古大学图书馆

Inhibiting liquid permeation into silicone rubber by superhydrophobic coating for prolonged service life

High Voltage 2023年第5期8卷 986-996页

作者： Shuming Liu Ying Zhou Zhou Zuo Shuqi Liu Qian Wang Zhong Chen Xidong Liang State Key Laboratory of Control and Simulation of Power System and Generation Equipment Department of Electrical EngineeringTsinghua UniversityBeijingChina School of Material Science and Engineering Nanyang Technological UniversitySingaporeSingapore

Liquid permeation into silicone rubber(SR)may lead to the degradation or complete failure of the composite *** to inhibit liquid permeation,two kinds of superhydrophobic coatings are applied to the SR *** liquid permeation properties of SR with different types of liquids are investigated,and the Langmuir diffusion model is applied to analyse the experimental *** results show that the composite superhydrophobic coating can effectively inhibit liquid permeation by reducing the contact area between the surface and liquid,and the stable structure of the composite coating can maintain the performance after the liquid permeation and ***,the nano‐particle coating without the polymer binder experiences severe performance degradation during the immersion test,and it cannot restrain the liquid permeation anymore after it loses the *** a validation of the effective protection,the insulation resistivity change was *** resistivity decreases sharply for the pristine SR after water permeation;however,the decrease is much smaller for the coated *** current study not only provides new insight into the liquid permeation properties of SR with different surface wettability but also suggests an effective measure to prevent liquid permeation into SR.

关键词： coating permeation liquid

来源：评论

学校读者我要写书评

暂无评论

32 Tb/s Real-Time C6T+L6T Unrepeated 400G QPSK Transmission over a 50.3-dB Span Loss G.652.D Fiber using Bidirectional Raman Amplification

32 Tb/s Real-Time C6T+L6T Unrepeated 400G QPSK Transmission ...

引用

2024 Asia Communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and Optical Communications, IPOC 2024

作者： Wu, Nishan Wang, Hongya Yu, Wenbo Shi, Hu WDM System Department State Key Laboratory of Mobile Network and Mobile Multimedia Technology ZTE Corporation Wuhan China

This paper first demonstrates a C6T+L6T 400G QPSK unrepeated transmission with the capacity of 32 Tb/s (80× 400 Gb/s) over 50.3-dB span loss G.652.D fiber, utilizing standard commercial C6T+L6T optical system and... 详细信息

ISBN: (纸本)9798350379266

关键词： Optical systems

来源：评论

学校读者我要写书评

暂无评论

Uptrend of the Western North Pacific Tropical Cyclone Outflow Height during 1959-2021

引用

Journal of Meteorological Research 2024年第2期38卷 339-350页

作者： Yuan SUN Zhihao FENG Wei ZHONG Panmao ZHAI Yanluan LIN Shuo LYU College of Advanced Interdisciplinary Studies National University of Defense TechnologyNanjing 211100 College of Meteorology and Oceanography National University of Defense TechnologyChangsha 410073 State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesChina Meteorological AdministrationBeijing 100081 Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System ScienceTsinghua UniversityBeijing 100084

Relatively little is known about the impact of global warming on the tropical cyclone(TC)outflow,despite its large contribution to TC *** this study,based on the International Best Track Archive for Climate Stewardship(IBTrACS)dataset and ERA5 reanalysis data,we show that the TC outflow height has risen significantly(48.20±22.18 m decades-1)in the past decades(1959-2021)over the western North Pacific,and the rising trend tends to be sharper for stronger TCs(the uptrend of severe typhoon is 61.09±40.92 m decades-1).This rising trend of the outflow height explains the contradiction between the decrease trend of the TC outflow temperature and the increase trend of the atmospheric troposphere ***,possible contribution of the TC outflow height uptrend to TC intensity has also been *** results show that the rise of outflow height leads to the decrease of outflow temperature,and thus an increased difference between underlying sea surface temperature(SST)and TC outflow temperature,which eventually favors the increase of TC intensity.

关键词： tropical cyclone outflow height global warming western North Pacific

来源：评论

学校读者我要写书评

暂无评论

Towards optimized tensor code generation for deep learning on sunway many-core processor

引用

Frontiers of Computer Science 2024年第2期18卷 1-15页

作者： Mingzhen LI Changxi LIU Jianjin LIAO Xuegui ZHENG Hailong YANG Rujun SUN Jun XU Lin GAN Guangwen YANG Zhongzhi LUAN Depei QIAN State Key Laboratory of Software Development Environment Beijing 100191China School of Computer Science and Engineering Beihang UniversityBeijing 100191China National University of Singapore Singapore 119077Singapore State Key Laboratory of Mathematical Engineering and Advanced Computing Wuxi 214000China Science and Technology on Special System Simulation Laboratory Beijing Simulation Center Beijing 100854China Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China

The flourish of deep learning frameworks and hardware platforms has been demanding an efficient compiler that can shield the diversity in both software and hardware in order to provide application *** the existing deep learning compilers,TVM is well known for its efficiency in code generation and optimization across diverse hardware *** the meanwhile,the Sunway many-core processor renders itself as a competitive candidate for its attractive computational power in both scientific computing and deep learning *** paper combines the trends in these two ***,we propose swTVM that extends the original TVM to support ahead-of-time compilation for architecture requiring cross-compilation such as *** addition,we leverage the architecture features during the compilation such as core group for massive parallelism,DMA for high bandwidth memory transfer and local device memory for data locality,in order to generate efficient codes for deep learning workloads on *** experiment results show that the codes generated by swTVM achieve 1.79x improvement of inference latency on average compared to the state-of-the-art deep learning framework on Sunway,across eight representative *** work is the first attempt from the compiler perspective to bridge the gap of deep learning and Sunway processor particularly with productivity and efficiency in *** believe this work will encourage more people to embrace the power of deep learning and Sunwaymany-coreprocessor.

关键词： sunway processor deep learning compiler code generation performance optimization

来源：评论

学校读者我要写书评

暂无评论

Analog parallel processor for broadband multifunctional integrated system based on silicon photonic platform

引用

Light(Science & Applications) 2025年第3期14卷 746-756页

作者： Na Qian Defu Zhou Haowen Shu Ming Zhang Xingjun Wang Daoxin Dai Xiao Deng Weiwen Zou State Key Laboratory of Advanced Optical Communication Systems and Networks Intelligent Microwave Lightwave Integration Innovation Center(imLic)Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghaiChina State Key Laboratory of Advanced Optical Communications System and Networks Department of ElectronicsSchool of Electronics Engineering and Computer SciencePeking UniversityBejingChina State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang UniversityHangzhouChina

Sharing the hardware platform between diverse information systems to establish full cooperation among different functionalities has attracted substantial ***,broadband multifunctional integrated systems with large operating frequency ranges are challenging due to the bandwidth and computing speed restrictions of electronic ***,we report an analog parallel processor(APP)based on the silicon photonic platform that directly discretizes and parallelizes the broadband signal in the analog *** APP first discretizes the signal with the optical frequency comb and then adopts optical dynamic phase interference to reassign the analog signal into 2N parallel *** photonic analog parallelism,data rate and data volume in each sequence are simultaneously compressed,which mitigates the requirement on each parallel computing ***,the fusion of the outputs from each computing core is equivalent to directly processing broadband *** the proof-of-concept experiment,two-channel analog parallel processing of broadband radar signals and high-speed communication signals is implemented on the single photonic integrated *** bandwidth of broadband radar signal is 6 GHz and the range resolution of 2.69 cm is *** wireless communication rate of 8 Gbit/s is also *** the bandwidth and speed limitations of the single-computing core along with further exploring the multichannel potential of this architecture,we anticipate that the proposed APP will accelerate the development of powerful optoelectronic processors as critical support for applications such as satellite networks and intelligent driving.

关键词： analog parallel processor sharing hardware platform multifunctional integrated systems establish full cooperation different functionalities analog parallel processor app based silicon photonic platform electronic circuitryherewe broadband signal

来源：评论

学校读者我要写书评

暂无评论

A practical PID variable stiffness control and its enhancement for compliant force-tracking interactions with unknown environments

引用

Science China(Technological Sciences) 2023年第10期66卷 2882-2896页

作者： ZHANG Xin ZHOU Hao LIU JinGuo JU ZhaoJie LENG YuQuan YANG ChenGuang State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169China University of Chinese Academy of Sciences Beijing 100049China School of Computing University of PortsmouthPortsmouth PO13HEUK Shenzhen Key Laboratory of Biomimetic Robotics and Intelligent Systems Department of Mechanical and Energy EngineeringSouthern University of Science and TechnologyShenzhen 518055China Key Laboratory of Autonomous Systems and Networked Control College of Automation Science and EngineeringSouth China University of TechnologyGuangzhou 510640China

Compliant interaction control is a key technology for robots performing contact-rich manipulation *** design of the compliant controller needs to consider the robot hardware because complex control algorithms may not be compatible with the hardware performance,especially for some industrial robots with low bandwidth *** paper focuses on effective and easy-to-use compliant control algorithms for position/velocity-controlled *** by human arm stiffness adaptation behavior,a novel variable target stiffness(NVTS)admittance control strategy is proposed for adaptive force tracking,in which a proportional integral derivative(PID)variable stiffness law is designed to update the stiffness coefficient of the admittance function by the force and position ***,its stability and force-tracking capability are theoretically *** addition,an impact compensator(Impc)is integrated into the NVTS controller to enhance its disturbance-suppression capability when the robot is subjected to strong vibration disturbances in complicated surface polishing *** proposed controllers are validated through four groups of experimental tests using different robots and the corresponding results demonstrate that they have high-accuracy tracking capability and strong adaptability in unknown environments.

关键词： compliant interaction control force tracking PID variable stiffness impact compensator unknown environments

来源：评论

学校读者我要写书评

暂无评论

Prediction on the relative permittivity of energy storage composite dielectrics using convolutional neural networks:A fast and accurate alternative to finite-element method

引用

iEnergy 2022年第4期1卷 463-470页

作者： Shao-Long Zhong Di-Fan Liu Lei Huang Yong-Xin Zhang Qi Dong Zhi-Min Dang State Key Laboratory of Power System Department of Electrical EngineeringTsinghua UniversityBeijing 100084China

The relative permittivity is one of the essential parameters determines the physical polarization behaviors of the nanocomposite dielectrics in many applications,particularly for capacitive energy *** the relative permittivity of particle/polymer nanocomposites from the microstructure is of great ***,the classical effective medium theory and physics-based numerical calculation represented by finite element method are time-consuming and cumbersome for complex structures and nonlinear *** work explores a novel architecture combining the convolutional neural network(ConvNet)and finite element method(FEM)to predict the relative permittivity of nanocomposite dielectrics with incorporated barium titanite(BT)particles in polyvinylidene fluoride(PVDF)*** ConvNet was trained and evaluated on big datasets with 14266 training data and 3514 testing data generated form a programmatic *** numerical experiments,we demonstrate that the trained network can efficiently provide an accurate agreement between the ConvNet model and FEM by virtue of the significant evaluation metrics R2,which reaches as high as 0.9783 and 0.9375 on training and testing data,*** strong universality of the presented method allows for an extension to fast and accurately predict other properties of the nanocomposite dielectrics.

关键词： Relative permittivity nanocomposite dielectrics convolutional neural networks finite element method prediction accuracy

来源：评论

学校读者我要写书评

暂无评论

The pharmacological landscape of chronic subdural hematoma:a systematic review and network meta-analysis of randomized and non-randomized controlled studies

引用

Burns & Trauma 2024年第1期12卷 864-872页

作者： Tao Liu Zhihao Zhao Mingqi Liu Shuo An Meng Nie Xuanhui Liu Yu Qian Ye Tian Jianning Zhang Rongcai Jiang Department of Neurosurgery Tianjin Neurological InstituteState Key Laboratory of Experimental HematologyKey Laboratory of Post-Neuroinjury Neurorepair and Regeneration in Central Nervous System Tianjin&Ministry of EducationTianjin Medical University General Hospital154 Anshan RoadTianjin 300052China

Background:There are various treatment modalities for chronic subdural hematoma(CSDH)and there is extensive debate surrounding pharmaceutical *** is no consensus regarding the relative efficacy and safety of multiple treatment *** study aims to investigate this issue and offer potential clinical ***:We searched PubMed,Web of Science,Embase and the Cochrane Library from January 2000 to May 2023 to identify randomized and nonrandomized controlled studies reporting one or more outcomes associated with the pharmacologic management of *** primary outcomes of interest included recurrence,favorable prognosis and adverse events,while the secondary outcomes included a reduction in hematoma volume and *** estimates,credible intervals and odds ratios were calculated for all outcomes using a fixed effects *** in network meta-analysis judgments were employed to stratify the evidential *** study was registered with PROSPERO:***:The search strategy yielded 656 references;ultimately,36 studies involving 8082 patients fulfilled our predefined inclusion *** findings suggested that statins+glucocorticoids(GCs)ranked highest for preventing recurrence,improving prognosis and facilitating hematoma *** acid ranked second highest for preventing *** were found to be the preferred drug intervention for decreasing mortality and preventing adverse *** agents ranked lowest in terms of decreasing mortality and improving ***:Our findings indicate that statins+GCs may be the most effective treatment modality for preventing recurrence,improving patient prognosis and facilitating hematoma *** terms of reducing mortality and preventing adverse events,statins may be superior to other pharmacological *** use of GCs is not suggested for patients with *** prospective research is needed

关键词： Chronic subdural hematoma Pharmacological interventions Recurrence Statins Glucocorticoids Meta-analysis Randomized controlled studies

来源：评论

学校读者我要写书评

暂无评论

Full Resolution Repetition Counting 16th

Full Resolution Repetition Counting

引用

16th International Conference on Intelligent robotics and Applications, ICIRA 2023

作者： Li, Jianing Chen, Bowen Wang, Zhiyong Liu, Honghai School of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen China State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin China

ISBN: (纸本)9789819964826

Given an untrimmed video, repetitive actions counting aims to estimate the number of repetitions of class-agnostic actions. To handle the various length of videos and repetitive actions, also optimization challenges in end-to-end video model training, down-sampling is commonly utilized in recent state-of-the-art methods, leading to ignorance of several repetitive samples. In this paper, we attempt to understand repetitive actions from a full temporal resolution view, by combining offline feature extraction and temporal convolution networks. The former step enables us to train repetition counting network without down-sampling while preserving all repetitions regardless of the video length and action frequency, and the later network models all frames in a flexible and dynamically expanding temporal receptive field to retrieve all repetitions with a global aspect. Besides, temporal self-similarity matrix is used in our model to represent the correlation of action, which contains much cycle information in time series. We experimentally demonstrate that our method achieves better or comparable performance in three public datasets, i.e., TransRAC, UCFRep and QUVA. We expect this work will encourage our community to think about the importance of full temporal resolution. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Convolution

来源：评论

学校读者我要写书评

暂无评论

Prescribed burning alters soil microbial community structure by changing soil physicochemical properties in temperate forests of northern China

引用

Journal of Forestry Research 2025年第2期36卷 61-77页

作者： Tongxin Hu Yu Han Kajar Köster Jianyu Wang Haiqing Hu Xu Dou Long Sun Yiyang Ding Key Laboratory of Sustainable Forest Ecosystem Management of Ministry of Education Northern Forest Fire Management Key Laboratory of State Forestry and Grassland AdministrationNortheast Forestry UniversityHarbin 150040People’s Republic of China Department of Environmental and Biological Sciences University of Eastern Finland80101 JoensuuFinland Department of Forest Sciences/Institute for Atmospheric Sciences and Earth System Research(INAR) Department of PhysicsUniversity of Helsinki00014 HelsinkiFinland

Prescribed burning is commonly used to main-tain forest ecosystem functions and reduce the risk of future *** many studies have investigated the response of microbial community to wildfires in forest eco-systems,the effects of prescribed burnings on soil micro-bial community structure are less *** is also unclear that how post-fire soil physiochemical properties changes affected soil microbial ***,we studied the impacts of prescribed burning on soil microbiome in three typical temperate forests of northern China by collecting soil physicochemical and high-throughput sequencing for 16S rRNA and 18S rRNA was applied to analyze the diversity and community composition of soil microbes(bacteria and fungi).Compared with pre-fire condition,prescribed burn-ing significantly decreased Chao1 index and altered soil bac-terial communities(P<0.05),whereas it had no significant effect on fungal diversity and community structure of the(P>0.05).Planctomycetes and Actinobacteria made the greatest contributions to the bacterial community dissimi-larity between the pre-fire and post-fire *** main variables influencing the post-fire soil microbial community structure are soil pH,available phosphorus,total nitrogen,and the ratio of soil total carbon to soil total nitrogen,which could account for 73.5%of the variation in the microbial community structure in these *** findings demon-strated a great discrepancy in the responses of bacteria and fungi to prescribed *** burning altered the soil microbial structure by modifying the physicochemical *** results pointed that it is essential to evalu-ate the impact of prescribed burnings on forest ecosystem *** findings provide an important baseline for assessing post-fire microbial recovery in the region and offer critical guidance for restoration efforts.

关键词： Prescribed burning High-throughput sequencing Temperate forest Bacteria Fungi

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：