检索结果-南通市图书馆

High Voltage 2024年第2期9卷 391-402页

作者： Junwen He Bangfa Peng Guanglin Yu Ronggang Wang Nan Jiang Jie Li Yan Wu School of Electrical Engineering Dalian University of TechnologyDalianChina Canmax Technologies co. Ltd.SuzhouChina

A dual-frequency(DF)dielectric barrier discharge,excited by the superposition of a 50 Hz low frequency(LF)and a 5000 Hz intermediate frequency(IF),is proposed to enhance *** effect of the LF voltage co.ponent on the breakdown behaviour of the DF discharge during different periods has been studied both experimentally and *** number of high-current pulses rises as the LF voltage *** statistical analysis shows that the number of the current pulse amplitude above 80 mA in the DF discharge reaches nearly 6 times that in the IF ***,the total discharge energy in the DF discharge is significantly higher than that in the IF *** simulation re-produces the temporal variation of the breakdown behaviours in the DF *** simulated results reveal that the maximal electric field strength of the breakdown process is greater in the DF discharge co.pared to the IF discharge during a half-period of ***,the co.parison between the IF and DF discharges exhibits that the LF voltage regulates the accumulation of residual charged species on the dielectric surface after the breakdown by modulating the residual voltage between the air gap.

关键词： dielectric excitation excited

Review of Electrical and Electronic Architectures for Autonomous Vehicles:Topologies,Networking and Simulators

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Automotive Innovation 2024年第1期7卷 82-101页

作者： Wenwei Wang Kaidi Guo Wanke Cao Hailong Zhu Jinrui Nan Lei Yu National Engineering Research Center of Electric Vehicles Beijing Institute of Technology(BIT)Beijing 100081China shenzhen Automotive Research Institute Beijing Institute of Technology(BIT)Shenzhen 518000China State Key Laboratory of Networking and Switching technology Beijing University of Posts and TelecommunicationBeijing 100876China Purple Mountain Laboratories Nanjing 211111China Beijing Kawen New Energy Vehicle co. LTDBeijing 102209China

With the rapid development of autonomous vehicles,more and more functions and co.puting requirements have led to the co.tinuous centralization in the topology of electrical and electronic(E/E)*** certain Tier1 suppliers,such as BOSCH,have previously proposed a serial roadmap for E/E architecture development,implemented since 2015 with significant co.tributions to the automotive industry,lingering misco.ceptions and queries persist in actual engineering ***,there are co.cerns regarding the perspective of zone-oriented E/E architectures,characterized by zonal co.centration,as successors to domain-oriented E/E architectures,known for functional *** these misco.ceptions and queries,this study introduces a novel parallel roadmap for E/E architecture development,co.currently evaluating domain-oriented and zone-oriented ***,the study explores hybrid E/E architectures,amalgamating features from both *** align with the evolution of E/E architectures,networking technologies must adapt *** networking mechanisms pivotal in E/E architecture design are co.prehensively ***,the study delves into modeling and verification tools pertinent to E/E architecture *** co.clusion,the paper outlines existing challenges and unresolved queries in this domain.

关键词： Autonomous vehicles Electrical and electronic architectures Topology Networking Domain-oriented Zone-oriented

Advanced rare earth tantalate RETaO_(4)(RE=Dy,Gd and Sm) with excellent oxygen/thermal barrier performance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第8期42卷 1595-1603,I0007页

作者： Jun Wang Jianyu Li Chunyu Jiang Jianbo Song Xing Yang Xiaolong Ma Kailiang Luo Peng Wu Xiaoyu Chong Jing Feng Faculty of Material Science and Engineering Kunming University of Science and TechnologyKunming650093China Shanxi Tianxuan co.ting technology co. LtdXi'an710000China

Thermal barrier co.tings(TBCs) materials with lowered the rmal and oxygen ion co.ductivity can provide thermal and oxidative protection for high te mperature hot-end co.ponents in aero nautical engines and gas turbines,The rare-earth tantalate RETaO_(4)(RE=Dy,Gd and Sm) ceramics with monoclinic(m) phase were successfully synthesized via spark plasma *** vacancies responsible for the thermal and oxygen ion co.ductivities of RETaO_(4) were demonstrated by atomic-resolution energy dispersive Xray and X-ray photoelectron *** the three samples,DyTaO_(4) has excellent oxygen/thermal barrier *** to the current service thermal barrier co.ting material ZrO_(2)-8 wt% Y_(2)O_(3)(8 YSZ),DyTaO_(4) has an ultra-low oxygen ion co.ductivity benefiting from low oxygen vacancy co.centration and strong stretching force *** intrinsic thermal co.ductivity of DyTaO_(4)is 68.2% less than that of 8 ***,the thermal expansion rate curves indicate that the phase transformation does not happen from room te mperature to 1200℃.The above results demonstrate that high-growth rate the rmally grown oxide can be retarded by creating dense DyTaO_(4) co.ting with lowered thermal and oxygen ion co.ductivity.

关键词： Thermal barrier co.tings Rare earths Oxygen vacancies Thermal co.ductivity Oxygen ion co.ductivity

维普期刊数据库

OpBench: an operator-level GPU benchmark for deep learning

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第9期67卷 76-87页

作者： Qingwen GU Bo FAN Zhengning LIU Kaicheng CAO Songhai ZHANG Shimin HU Department of co.puter Science and technology Tsinghua University National Innovation Institute of Defense technology Academy of Military Science Beijing Fitten technology co. Ltd.

Operators(such as co.v and ReLU) play an important role in deep neural networks. Every neural network is co.posed of a series of differentiable operators. However, existing AI benchmarks mainly focus on accessing model training and inference performance of deep learning systems on specific models. To help GPU hardware find co.puting bottlenecks and intuitively evaluate GPU performance on specific deep learning tasks, this paper focuses on evaluating GPU performance at the operator level. We statistically analyze the information of operators on 12 representative deep learning models from six prominent AI tasks and provide an operator dataset to show the different importance of various types of operators in different networks. An operator-level benchmark, OpBench, is proposed on the basis of this dataset, allowing users to choose from a given range of models and set the input sizes acco.ding to their demands. This benchmark offers a detailed operator-level performance report for AI and hardware developers. We also evaluate four GPU models on OpBench and find that their performances differ on various types of operators and are not fully co.sistent with the performance metric FLOPS(floating point operations per seco.d).

关键词： deep learning operator benchmark model benchmark GPU performance analysis deep neural networks

Distribution System Restoration with Cyber Failures Based on co.dispatching of Multiple Reco.ery Resources

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Power Systems and Clean Energy 2024年第4期12卷 1096-1112页

作者： Zhengze Wei Kaigui Xie Bo Hu Yu Wang Changzheng Shao Pierluigi Siano Jun Zhong National Key Laboratory of Power Transmission Equipment technology Chongqing UniversityChongqing 400044China Department of Management and Innovation Systems University of SalernoFisciano 84084Italyand he is also with the Department of Electrical and Electronic Engineering ScienceUniversity of JohannesburgJohannesburg 2006South Africa shenzhen Power Supply co. Ltd.China Southern Power GridShenzhen 518000China

Improving the restoration efficiency of a distribu-tion system is essential to enhance the ability of power systems to deal with extreme *** distribution system restoration(DSR)depends on the interaction among the electric network(EN),cyber network(CN),and traffic network(TN).However,the co.rdination of these three networks and co.dispatching of multiple reco.ery resources have been mostly *** paper proposes a novel DSR framework,which is formulated as a mixed-integer linear programming(MILP)*** fail-ures in cyber lines result in cyber blind areas,which restrict the normal operation of remote-co.trolled *** acceler-ate the reco.ery process,multiple reco.ery resources are uti-lized including electric maintenance crews(EMCs),cyber main-tenance crews(CMCs),and emergency co.munication vehicles(ECVs).Specifically,CMCs and ECVs restore the cyber func-tion of switches in co.peration,and EMCs repair damaged elec-tric *** travel time of these three dispatchable resources is determined by *** effectiveness and superiority of the proposed framework are verified on the modified IEEE 33-node and 123-node test systems.

关键词： Distribution system restoration(DSR) network co.pling maintenance crew co.dispatching emergency co.municationvehicle

A Bus Planning Algorithm for FPC Design in co.plex Scenarios

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2024年第2期33卷 346-352页

作者： Haoying WU Sizhan ZOU Ning XU Shixu XIANG Mingyu LIU School of Information Engineering Wuhan University of Technology Huawei Device co. Ltd.

Flexible printed circuit(FPC) design in co.plex scenarios has a list of pin co.centration areas, which lead to extremely co.gested intersection regions while co.necting the pins. Currently, it is challenging to explore the routability and to find topologically non-crossing and routable paths manually for the nets timely. The existing bus planning methods cannot offer optimal solutions co.cerning the special resource distribution of the FPC design. To investigate an effective way to shorten the routing time of FPC and achieve enhanced performance, a bus planning algorithm is proposed to tackle co.plex area co.nection problems. On the basis of the pin location information, the routing space is partitioned and generally represented as an undirected graph, and the topological non-crossing relationship between different regions is obtained using the dynamic pin sequence. co.sidering the routability and electrical co.straints, a heuristic algorithm is proposed to search the optimal location of the crossing point on the region boundary. Experimental results on industrial cases show that the proposed algorithm realize better performance in terms of co.nt and routability in co.parison with numerous selected state-of-the-art router and methods.

关键词： Flexible printed circuits Automation Heuristic algorithms Routing Planning Pins Partitioning algorithms

An electron-transfer[Fe_(2)co.(2)]square co.plex exhibiting unprecedented wide room-temperature hysteresis

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第4期67卷 1198-1207页

作者： Xin-Hua Zhao Yi-Fei Deng Jia-Tao Chen Jiong Yang Yuan-Zhu Zhang Department of Chemistry Southern University of Science and Technology(SUSTech)Shenzhen 518055China

Switchable molecules with magnetic bistability that can function at standard co.ditions are highly desirable from the perspective of practical *** the last decade,significant progress has been made in modulating thermally induced electrontransfer-co.pled spin transition(ETCST)events between diamagnetic{Fe_(LS)^(Ⅱ)(μ-CN)co.(LS)^(Ⅲ)}and paramagnetic{Fe_(LS)^(Ⅲ)(μ-CN)-co.(HS)^(Ⅱ)}electron co.figurations(named LS and HS,respectively,for short)within the Fe/co.mixed-valence cyanometallate ***,we prepared a novel[Fe_(2)co.(2)]square co.plex[(pzTp)Fe(CN)_(3)co.bnbpen)]_(2)[NO_(3)]_(2)·4CH_(3)OH·2.5H_(2)O(1·Solv)and its desolvated phase[(pzTp)Fe(CN)_(3)co.bnbpen)]_(2)[NO_(3)]_(2)(1),obtained via single-crystal-to-single-crystal(SCSC)*** 1·Solv remaining in the diamagnetic state below room temperature exhibits an irreversible ETCST behavior acco.panied by desolvation upon ***,co.plex 1 displays an unprecedented rate-dependent ETCST behaviour involving with two diamagnetic LS states(a dynamically favoured LS1 state and a thermodynamically favoured LS2state),between which a net one-way transition from LS1 to LS2 is accessible likely via a structural phase transition(SPT)above255 ***,two well separated transition channels(HS?LS1 at around 255 K and HS←→LS2 in the temperature range of 317-350 K)are achieved acco.ding to either fast(>20 K/min)or slow rate(co.plex 1 shows a wide hysteresis of 66 K centered at 328 K,the largest yet reported for discrete Fe/co.cyanometallate *** 1 represents the first ETCST example co.pled with dynamic SPT,providing a new strategy for manipulating bistability within this fascinating cyanometallate family.

关键词： switchable molecules cyanometallate co.plexes electron transfer hysteresis structural phase transition

维普期刊数据库

Crystallization of battery-grade lithium carbonate with high reco.ery rate via solid-liquid reaction

在线全文

学校读者我要写书评

暂无评论

Particuology 2024年第9期92卷 95-105页

作者： Chaofan Wu Longjin Jiang Wei Wang Bin Dong Zhidong Chang Daixiang Wei Hira Anwar Minghui Zhang Dekun Gao School of Chemistry and Biological Engineering University of Science and Technology BeijingBeijing100083China Anhui Chaoyue Environmental Protection technology co. LtdChuzhou239060China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing100190China Anhui Huihong technology co. LtdChuzhou239060China

Lithium carbonate(Li_(2)co.(3))stands as a pivotal raw material within the lithium-ion battery ***,we propose a solid-liquid reaction crystallization method,employing powdered sodium carbonate instead of its solution,which minimizes the water introduction and markedly elevates one-step lithium reco.ery *** kinetic calculations,the Li_(2)co.(3)solid-liquid reaction crystallization process co.forms by the Avrami equation rather than shrinking co.e model,which means the dissolution rate of Na_(2)co.(3)is the most important factor affecting the reaction *** effects of reaction co.ditions such as temperature and stirring speed on the Li_(2)co.(3)precipitation behavior were *** results indicated that temperature is a most essential parameter than other reaction co.ditions or stirring *** exceptional 93%reco.ery of Li_(2)co.(3)at 90℃with a remarkable purity of 99.5%was achieved by using 1.2 M ratio of Na_(2)co.(3)/Li_(2)SO_(4).This method provides a new idea for the efficient preparation of battery-grade Li_(2)co.(3).

关键词： Lithium reco.ery Lithium sulfate Reaction crystallization Battery-grade lithium carbonate

Accelerating Factor Xa inhibitor disco.ery with a de novo drug design pipeline

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2024年第8期72卷 85-94页

作者： Yujing Zhao Qilei Liu Jian Du Qingwei Meng Liang Sun Lei Zhang State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart Materials Oriented Chemical EngineeringInstitute of Chemical Process Systems EngineeringSchool of Chemical EngineeringDalian University of TechnologyDalian 116024China Ningbo Institute of Dalian University of technology Ningbo 315016China shenzhen Shuli Tech co. LtdShenzhen 518126China Department of Physics City University of Hong KongTat Chee AvenueKowloonHong Kong SARChina

Small-molecule drugs are essential for maintaining human health. The objective of this study is to identify a molecule that can inhibit the Factor Xa protein and be easily procured. An optimization-based de novo drug design framework, Drug CAMD, that integrates a deep learning model with a mixed-integer nonlinear programming model is used for designing drug candidates. Within this framework, a virtual chemical library is specifically tailored to inhibit Factor Xa. To further filter and narrow down the lead co.pounds from the designed co.pounds, co.prehensive approaches involving molecular docking,binding pose metadynamics(BPMD), binding free energy calculations, and enzyme activity inhibition analysis are utilized. To maximize efficiency in terms of time and resources, molecules for in vitro activity testing are initially selected from co.mercially available portions of customized virtual chemical libraries. In vitro studies assessing inhibitor activities have co.firmed that the co.pound EN300-331859shows potential Factor Xa inhibition, with an IC_(50)value of 34.57 μmol·L^(-1). Through in silico.molecular docking and BPMD, the most plausible binding pose for the EN300-331859-Factor Xa co.plex are identified. The estimated binding free energy values co.relate well with the results obtained from biological assays. co.sequently, EN300-331859 is identified as a novel and effective sub-micromolar inhibitor of Factor Xa.

关键词： Chemical product design Mathematical programming method Deep learning Binding affinity Factor Xa inhibitor

维普期刊数据库

3D printed silico.-based micro-lattices with ultrahigh areal/gravimetric capacities and robust structural stability for lithium-ion batteries

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第4期17卷 2693-2703页

作者： Jie Fu Dong Wang Yan Li Xianzheng Liu Rui Zhang Zhiyuan Liu Pengdong Liu Lijuan Zhang Xuefei Li Guangwu Wen School of Materials Science and Engineering Shandong University of TechnologyZibo 255000China Shandong Si-Nano Materials technology co. Ltd.Zibo 255000China

Nanostructured silico. anodes have shown extraordinary lithium storage properties for lithium-ion batteries(LIBs)but are usually achieved at low areal loadings(<1.5 mg·cm^(-2))with low areal *** sound electrochemical... 详细信息

Nanostructured silico. anodes have shown extraordinary lithium storage properties for lithium-ion batteries(LIBs)but are usually achieved at low areal loadings(co.-graphene-carbon nanotube(3D-Si/G/C)electrode for simultaneously achieving ultrahigh areal/gravimetric capacities at high mass *** periodically arranged vertical channels and hierarchically porous filaments facilitate sufficient electrolyte infiltration and rapid ion diffusion,and the carbonaceous network provides excellent electron transport properties and mechanical integrity,thus endowing the printed 3D-Si/G/C electrode with fast electrochemical reaction kinetics and reversibility at high mass ***,the 3D-Si/G/C with high areal mass loading of 12.9 mg·cm^(-2) exhibits excellent areal capacity of 12.8 mAh·cm^(-2) and specific capacity of 1007 mAh·g^(-1),***-situ optical microsco.e and ex-situ scanning electron microsco.e(SEM)co.firm that the hierarchically porous filaments with interco.nected carbon skeletons effectively suppress the volume change of silico. and maintain stable micro-lattice architecture.A 3D printed 3D-Si/G/C-1||3D-LiFePO_(4)/G full cell holds excellent cyclic stability(capacity retention rate of 78%after 50 cycles)with an initial co.lombic efficiency(ICE)of 96%.This work validates the feasibility of 3D printing on co.structing high mass loading silico. anode for practical high energy-density LIBs.

关键词： silico. anode areal capacity three-dimensional(3D)printing lithium-ion batteries