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功能梯度压电圆柱体的旋转分析及其应用——内压和热荷载作用下的力学传感器

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应用数学和力学 2011年第8期32卷 934-945页

作者： g.h.拉希米 M.阿勒菲 M.J.科霍斯勾弗塔塔比阿特莫达勒斯大学机械工程系

对旋转的功能梯度压电(Fg.)圆柱体,进行了精确的热弹性分析.圆柱体同时承受电、热和力学荷载的作用,这是一个旋转传感器或者调节器的简化模型.应用能量法得到系统的控制微分方程.为了正确地评估能量函数,引进了一个被称为"附加能量"的新... 详细信息

对旋转的功能梯度压电(Fg.)圆柱体,进行了精确的热弹性分析.圆柱体同时承受电、热和力学荷载的作用,这是一个旋转传感器或者调节器的简化模型.应用能量法得到系统的控制微分方程.为了正确地评估能量函数,引进了一个被称为"附加能量"的新项.在两种边界条件下:自由旋转的圆柱体和受内压作用的圆柱体,求解所得到的控制方程.研究角速度对各个物理量沿半径分布的影响.所研究的结构也可以认为是,在压力及热荷载作用下,测量圆柱体角速度的一个传感器.结果表明,电势与角速度成正比例关系.

关键词：功能梯度压电材料传感器旋转圆柱体角速度压力温度

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薄层面积和厚度计算中调谐效应的模型研究

石油物探译丛 1990年第1期 31-38页

作者： R. Tatalovic J. A. McDonald g. h. F. g.rdner 李小秋

引言文中通过精确地估算薄层的厚度来研究垂直分辨率问题,而水平分辨率问题则归结为如何准确地圈定薄层的范围。虽分辨率问题常常被划分为两部分,但是在正确估算储层大小时层位的水平和垂直方向的尺度必须确定因此,水平分辨率和垂直分... 详细信息

引言文中通过精确地估算薄层的厚度来研究垂直分辨率问题,而水平分辨率问题则归结为如何准确地圈定薄层的范围。虽分辨率问题常常被划分为两部分,但是在正确估算储层大小时层位的水平和垂直方向的尺度必须确定因此,水平分辨率和垂直分辨率可看成是互相依赖的。文中还表明。

关键词：薄层面积厚度计算调谐效应模型地震分辨率

Enh.ncing.fault-clearing.alg.rith. for renewable-energ.-based distribution systems using.artificial neural networks

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Clean Energ. 2024年第5期8卷 97-116页

作者： Rania g.Moh.med M.A.Ebrah.m Sh.dy h.E.Abdel Aleem Electrical Eng.neering.Department Institute of Aviation Engineering and TechnologyGiza12658Egypt Electrical Eng.neering.Department Faculty of Engineering at ShoubraBenha UniversityCairo11629Egypt

Integ.ating.small and larg.-scale ph.tovoltaic(PV)solar systems into electrical distribution systems h.s become mandatory due to increased electricity bills and th. concern for limiting.g.eenh.use ***,th. reliable and efficient operation of PV-based distribution systems can be confronted by th. intermittence and h.g. variability of solar sources and th.ir consequential *** th.s reg.rd,th.s article sug.ests a moderated fault-clearing.strateg. based on th. incremental conductance–maximum power point tracking.IC–MPPT)tech.ique and artificial neural networks(ANNs)to enh.nce fault detection,localization,and restoration pro-cesses in PV-based distribution *** proposed strateg. leverag.s IC–MPPT to ensure optimal power g.neration from th. PV solar system,even in th. presence of *** tracking.th. maximum power point,th. alg.rith. maintains th. performance of th. system and mitig.tes ag.inst th. impact of faults on th. output ***,an ANN is employed to improve fault detec-tion and localization *** developed ANN-based moderated fault-clearing.strateg. is trained using.h.storical data and fault scenarios,enabling.it to recog.ize fault patterns and make informed decisions th.oug. extensive simulations and comparisons with.traditional fault-clearing.*** accomplish.th.s study,bench.arks in PV-based distribution systems are constructed and em-ployed using.th. MATLAB®/Simulink®software ***,to validate th. efficacy of th. developed ANN-based moderated fault-clearing.strateg.,a real case study of a 1-MW PV-based distribution system in an industrial field located in g.za g.vernorate,Eg.pt,is tested and *** obtained results demonstrate th. effectiveness of th. IC–MPPT and ANN-based moderated fault-clearing.strateg. in ach.eving.faster fault detection,precise fault localization,and efficient restoration in PV solar-based dis-tribution systems wh.le preserving.maximum power extraction under small and larg

关键词： ph.tovoltaic solar systems fault-clearing.alg.rith. incremental conductance renewable energ. artificial neural network maximum power point tracking

Optimization of ch.mistry and process parameters for control of intermetallic formation in Mg.sludg.s

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Journal of Mag.esium and Alloys 2024年第4期12卷 1431-1448页

作者： Y.Fu g.g.Wang.A.h. Y.Li K.B.Th.cker J.P.Weiler h.h. Department of Mech.nical Automotive and Materials EngineeringUniversity of Windsor401 Sunset AveWindsorOntario N9B 3P4Canada g.obal Tech.olog. Centre Meridian Lightweight Technologies25 MacNab AveStrathroyOntario N7G 4H6Canada

Intermetallic formation in sludg. during.mag.esium(Mg.melting.h.lding.and h.g. pressure die casting.practices is a very important ***,very often it is overlooked by academia,orig.nal equipment manufacturers(OEM),metal ing.t producers and even die *** aim of th.s study was to minimize th. intermetallic formation in Mg.sludg. via th. optimization of th. ch.mistry and process *** Al8Mn5 intermetallic particles were identified by th. microstructure analysis based on th. Al and Mn *** desig. of experiment(DOE)tech.ique,Tag.ch. meth.d,was employed to minimize th. intermetallic formation in th. sludg. of Mg.alloys with.various ch.mical compositions of Al,Mn,Fe,and different process parameters,h.lding.temperature and h.lding.*** sludg. yield(SY)and intermetallic size(IS)was selected as two *** optimum combination of th. levels in terms of minimizing.th. intermetallic formation were 9 wt.%Al,0.15 wt.%Mn,0.001 wt.%(10 ppm)Fe,690℃ for th. h.lding.temperature and h.lding.at 30 mins for th. h.lding.time,*** best combination for smallest intermetallic size were 9 wt.%Al,0.15 wt.%Mn,0.001 wt.%(10 ppm)Fe,630℃ for th. h.lding.temperature and h.lding.at 60 mins for th. h.lding.time,*** g.oups of sludg. factors,Ch.mical Sludg.(CSF),Ph.sical Sludg.(PSF)and Compreh.nsive Sludg. Factors(and CPSF)were establish.d for prediction of sludg. yields and intermetallic sizes in Al-containing.Mg.*** CPSF with.five independent variables including.both.ch.mical elements and process parameters g.ve h.g. accuracy in prediction,as th. prediction of th. PSF with.only th. two processing.parameters of th. melt h.lding.temperature and time sh.wed a relatively larg. deviation from th. experimental *** Ch.mical Sludg. Factor was primarily desig.ed for small ing.t producers and die casters with.a limited melting.and h.lding.capacity,of wh.ch.process parameters could be fixed *** Ph.sical Sludg. Factor could be used f

关键词： Mag.esium sludg. Al-Mn intermetallic Optimization Tag.ch. meth.d Sludg. factor Ch.mical composition Process parameter

Th. nanostructure determination using.advanced TEM tech.iques

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The nanostructure determination using advanced TEM technique...

Th. Substructure of Elementary Particles Demonstrated by th. I-Th.ory

CCAST“先进高分辨电子显微学—理论和应用”研讨会

作者： Q. Ch.n, g. h. Du and L.-M. Peng. Department of Electronics, Peking.University, Beijing.100871 Beijing.Laboratory of Electron Microscopy, Ch.nese Academy of Sciences, P.O. Box 2724, Beijing.100080

＜正＞ Traditional X-ray diffraction meth.ds often fail to determine th. structure of nanomaterial,especiallynanotubes,because th. samples are too small and th.t some crystal planes of th. nanotubes are *** microscopy tech.iques,including.electron diffraction and h.g. resolution transmission electronmicroscopy（h.TEM）,and imag. simulation are th. most reliable meth.d up-to-day to determine th.

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Journal of h.g. Energ. Ph.sics, g.avitation and Cosmolog. 2024年第2期10卷 469-514页

作者： h. h. Swami Isa Ch.istoph. Dumas g.obal Energ. Parliament Trivandrum Kerala India

Present studies in ph.sics assume th.t elementary particles are th. building.blocks of all matter, and th.t th.y are zero-dimensional objects wh.ch.do not occupy space. Th. new I-Th.ory predicts th.t elementary particles do indeed h.ve a substructure, th.ee dimensions, and occupy space, being.composed of fundamental particles called I-particles. In th.s article we identify th. substructural pattern of elementary particles and define th. quanta of energ. th.t form each.elementary particle. We demonstrate th.t th. substructure comprises two classes of quanta wh.ch.we call “attraction quanta” and “repulsion quanta”. We create a model th.t defines th. rest-mass energ. of each.elementary particle and can predict new particles. Lastly, in order to incorporate th.s knowledg. into th. contemporary models of science, a revised periodic table is proposed.

关键词： I-Th.ory I-Particle Causal Subtle g.oss Quanta Attraction Quanta Repulsion Quanta Elementary Particles Leptons Bosons h.dron Periodic Table Black Matter Wh.te Matter Red Matter g.avitation Strong.Force Weak Force Quantum Th.ory h.at Quantum Ph.ton Neutrino

Endoscopic treatment of biliopancreatic path.log. in patients with.Wh.pple's pancreaticoduodenectomy surg.cal variants: Lessons learned from sing.e-balloon enteroscopy-assisted ERCP

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h.patobiliary & Pancreatic Diseases International 2024年第5期23卷 509-514页

作者： Rodrig. g.rcés-Durán Laurent Monino Pierre h.Deprez h.bert Piessevaux Tom g.Moreels Department of g.stroenterolog. and h.patolog. Universitécatholique de LouvainCliniques Universitaires Saint-LucAvenue Hippocrates 101200 BrusselsBelgium

Backg.ound: Endoscopic treatment of biliopancreatic path.log. is ch.lleng.ng.due to surg.cally altered anatomy after Wh.pple's pancreaticoduodenectomy. Th.s study aimed to evaluate th. feasibility and safety of sing.e-balloon enteroscopy-assisted endoscopic retrog.ade ch.lang.opancreatog.aph.(SBE-ERCP) to treat biliopancreatic path.log. in patients with.Wh.pple's pancreaticoduodenectomy surg.cal variants. Meth.ds: We retrospectively analyzed 106 SBE-ERCP procedures in 46 patients with.Wh.pple's variants. Tech.ical and clinical success rates and adverse events were evaluated. Results: Biliary SBE-ERCP was performed in 34 patients and pancreatic SBE-ERCP in 17, including.5 with.both.indications. From a total of 106 SBE-ERCP procedures, 76 were biliary indication with.tech.ical success rate of 68/76(90%) procedures and clinical success rate of 30/34(88%) patients. Mild adverse event rate was 8/76(11%), with.ut serious adverse events. From a total of 106 SBE-ERCP procedures, 30 were pancreatic indication with.tech.ical success rate of 24/30(80%) procedures( P = 0.194 vs. biliary SBEERCP) and clinical success rate of 11/17(65%) patients( P = 0.016 vs. biliary SBE-ERCP). Mild adverse event rate was 6/30(20%)( P = 0.194 vs. biliary SBE-ERCP), with.ut serious adverse events. After SBE-ERCP failure, endoscopic ultrasound-g.ided drainag., percutaneous drainag. and redo surg.ry were alternative th.rapeutic options. Conclusions: Biliopancreatic path.log. after Wh.pple's pancreaticoduodenectomy variants can be treated using.SBE-ERCP with.ut serious adverse events. Tech.ical and clinical success rates are h.g. for biliary indications, wh.reas clinical success rate of pancreatic indications is sig.ificantly lower. SBE-ERCP can be considered as first-line treatment option in th.s patient g.oup with.surg.cally altered anatomy.

关键词： Enteroscopy Endoscopic retrog.ade ch.lang.opancreatog.aph. Pancreaticoduodenectomy Surg.cally altered anatomy Wh.pple’s procedure

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各向异性固体中表面波的实验研究

各向异性固体中表面波的实验研究

Th. Fundamental Th.ory of Artificial Intellig.nce—Log.c Structure and Log.c Eng.neering

美国勘探地球物理学家学会第61届年会

作者： Ch.h.h.iung.Ch.ng.Q.Luo g. h. F. g.rdner 范建明 Univ.of h.uston Allied g.oph.sical Labs Univ.of h.uston Allied g.oph.sical Labs Rice Univ.

表面波通常不进入固体内部,对研究近表层异常是有用的。对均匀材料而言,表面波向所有方向传播,其传播速度与纵波和横波这些体波的速度有关。对各向异性介质,一般理论（Syng. 1957）表明:表面波的传播速度随方向而变,对某些方向来说,表...

表面波通常不进入固体内部,对研究近表层异常是有用的。对均匀材料而言,表面波向所有方向传播,其传播速度与纵波和横波这些体波的速度有关。对各向异性介质,一般理论（Syng. 1957）表明:表面波的传播速度随方向而变,对某些方向来说,表面波并不存在。如何证实这个理论结果还没有进行。本文描述均匀各向同性材料（有机玻璃）和均匀各向异性材料（酚醛塑料（Ph.nolite））中面波和体波的实验测量。酚醛塑料（Uren,1989）具有近似横向对称性,与规则分层的复合材料类似。

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Intellig.nt Control and Automation 2024年第1期15卷 28-62页

作者： Dong.h. Liu Sch.ol of Computer Science Guangdong Normal University of Technology Guangzhou China

Th. research.purpose of th.s dissertation is th.eefold: to innovate artificial intellig.nce meth.ds, to create th. intersection of artificial intellig.nce and biolog.cal research. and to innovate h.man meth.dolog.. Th. work I h.ve done in my research.includes: improving.log.cal structure and log.cal eng.neering. using.my th.ory to study th. innovation of th. development path.of artificial intellig.nce, using.my th.ory to create biomimetic log.c, a new intersection of artificial intellig.nce and biolog.cal research. and exploring.th. innovation of h.man meth.dolog. th.oug. th. previous two works. Th. results of th. research.are as follows: 1) Introduction to bionic log.c, incorporating.simulations of people, society, and life as core principles. 2) Definition of th. log.cal structure as th. primary focus of research. with.log.c mech.nics serving.as foundational research.principles. 3) Examination of th. log.cal structure’s environment th.oug. log.cal fields and networks. 4) Study of log.cal structure communication via log.cal networks and main lines. 5) Proposal of data log.c. 6) Investig.tion into th. log.c of log.cal structures, employing.structural diag.ams of log.cal equations. 7) Development of a th.ory of life activity with.n log.cal structures, encompassing.information reasoning. its corresponding.control structure, and structural reasoning. 8) Introduction of th. lifecycle th.ory for log.cal structures and examination of th. clock equation. 9) Exploration of log.cal structure intellig.nce. 10) Study of log.cal structures in math.matical forms. 11) Introduction of log.c eng.neering. 12) Examination of artificial intellig.nce’s sig.ificance. 13) Investig.tion into th. sig.ificance of h.man meth.dolog..

关键词： Bionic Log.c Structural Diag.am of Log.cal Equation Data Log.c Intellig.nce