检索结果-南通市图书馆

Impacts of climate change on seasonal extreme waves in the Northwest Atlantic using a Spatial Neural Gas clustering method

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 Ocean Engineering and Science 2023年第4期8卷 367-385页

作者： Hamid Goharnejad Will Perrie Bash Toulany mike Casey Minghong Zhang Fisheries and Oceans Canada Bedford Institute of OceanographyDartmouthNova ScotiaCanada

Having estimates of wave climate parameters and extreme values play important roles for a variety of different societal activities,such as coastal management,design of inshore and offshore structures,marine transport,coastal recreational activities,fisheries,*** study investigates the efficiency of a state-of-the-art spatial neutral gas clustering method in the classification of wind/wave data and the evaluation of extreme values of significant wave heights(Hs),mean wave direction(MWD)and mean wave periods(T0)for two 39-year time periods;from 1979 to 2017 for the present climate,and from 2060 to 2098,for a future climate change scenario in the Northwest *** data were constructed by application of a numerical model,WAVEWATCHIII TM(hereafter,WW3),to simulate the wave climate for the study area for both present and future *** from the model was extracted for the wave climate,in terms of the wave parameters,specifically Hs,MWD and T0,which were analyzed and compared for winter and summer seasons,for present and future *** order to estimate extreme values in the study area,a Natural Gas(hereafter,NG)clustering method was applied,separate clusters were identified,and corresponding centroid points were *** analyze data at each centroid point,time series of wave parameters were extracted,and using standard stochastic models,such as Gumbel,exponential and Weibull distribution functions,the extreme values for 50 and 100-year return periods were ***,the impacts of climate change on wave regimes and extreme values can be specified.

关键词： Extreme wave parameters WW3 RCP8.5 Spatial neural gas clustering method

Inhomogeneity,dynamical symmetry,and complexity in high-temperature superconductors:Reconciling a universal phase diagram with rich local disorder

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 Science Bulletin 2011年第4期56卷 367-371页

作者： GUIDRY mike SUN Yang WU ChengLi Department of Physics Shanghai Jiao Tong University Shanghai 200240 China Department of Physics and Astronomy University of Tennessee Knoxville Tennessee 37996-1200 USA physics Department Chung Yuan Christian University ChungLi Taiwan 32023 China

A model for high-temperature superconductors incorporating antiferromagnetism,d-wave superconductivity,and no double lattice-site occupancy can give energy surfaces delicately balanced between antiferromagnetic and superconducting order for specific ranges of doping and temperature. The resulting properties can reconcile a universal cuprate phase diagram with rich inhomogeneity,relate that inhomogeneity to pseudogaps,give a fundamental rationale for giant proximity eects and other emergent behavior,and provide an objective framework to separate essential from peripheral in the superconducting mechanism.

关键词：高温超导体不均匀性相图调和复杂性对称性反铁磁性 d波超导

World Society for Pediatric Infectious Diseases declaration on combating antimicrobial resistance in children

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Pediatrics 2018年第6期14卷 523-524页

作者： Jim Buttery Yonghong Yang mike Sharland Department of Infection and Immunity Monash Children’s Hospital246 Clayton RoadClaytonMelbourneVIC 3168Australia Monash University MelbourneVICAustralia Beijing Children’s Hospital Affi liated to Capital Medical University BeijingPeople’s R epublic of China Shenzhen Children’s Hospital ShenzhenPeople’s R epublic of China Pediatric Infectious Diseases Research Group St George’sUniversity of LondonLondonUK

Preface The rise of antimicrobial resistance (AMR) is recognised as a major threat to global health. The United Nations' Sustain-able Development Goals (SDG) do not explicitly address AMR, but many of the targets within the goals depend on effective therapy for infectious diseases. Notably, these include targets 3.1, 3.2, 3.3, and 3.8, relating to the reduc-tion of early life mortality, eradicating ongoing epidemics including AIDS, tuberculosis and malaria, and achieving universal health coverage, as well as targets relating to pov-erty, malnourishment, and education (1)The World Health Organization (WHO) recognised the outstanding importance of AMR by passing a Global Action Plan in 2015 and declar-ing AMR a global priority (2)However, the WHO Global Action Plan on AMR mentions children only twice and to date includes no specific objectives or action points focusing on child health.

关键词： Diseases World Society children

Global collaboration on Biomaterials is starting with Binational WorkshopseSino-German Workshop on Biomaterials in Beijing 2016

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bioactive Materials 2017年第1期2卷 51-52页

作者： Frank Witte mike Barbeck Yufeng Zheng Julius Wolff Institute and Center for Musculoskeletal Surgery Berlin-Brandenburg Center for Regenerative TherapiesCharité-Universitätsmedizin BerlinAugustenburger Platz 113353 BerlinGermany Botiss GmbH Ullsteinstrasse 10812109 BerlinGermany Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing 100871China

Bioactive Materials is reporting about international events which may promote biomaterial research beyond national *** this regard,both countries,Germany and China have become global players in the field of health economy in the last decades.A sino-german platform for life sciences has already been founded in the field of health economy that enables for more cooperative projects between both research and economy from both ***,many different research projects have already been conducted between both ***,cooperation between researchers,clinicians and industry of different disciplines and fields is especially essential for the progress in biomaterial research and related ***,material scientists,biologists and physicians amongst many others are participating in this research field and are ambitious to find mutual solutions for the regeneration of various *** collaborative research and the markets for biomedical products become more and more global and,thus,programs to sustained established cooperative research are desirable.

关键词： sustained starting mutual

Signal Processing for Fast Fault Detection in HVDC Grids

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

作者： Revell mike

学校读者我要写书评

暂无评论

CSEE Journal of Power and Energy Systems 2018年第4期4卷 469-478页

作者： Willem Leterme mike Barnes Dirk Van Hertem EnergyVille/Electa research group Electrical Engineering Department ESATKU LeuvenBelgium Power Conversion Research Group School of Electrical and Electronic EngineeringUniversity of ManchesterManchester M139PLUK

For multiterminal or meshed Voltage Source Converter(VSC)High-voltage Direct Current(HVDC)systems,high speed protection against DC faults is essential,as power electronic components cannot withstand the rapidly increasing fault currents which would otherwise *** proposed DC fault detection methods were developed based on time domain simulations in EMT-type software,which requires considerable modeling and computational efforts and results in methods specifically designed for the HVDC grid under *** simplify the initial design of DC fault detection methods,this paper proposes general guidelines based on fundamental theory and offers a reduced modeling ***,the impact of non-ideal measurements is investigated and a method to choose the filters that optimally discriminate these fault signals from noise,is *** approach was evaluated in a case study on fault detection in a realistically dimensioned HVDC *** paper shows that the initial design of fast fault detection methods can be based on the relatively simple proposed guidelines and reduced *** paper furthermore shows that a sufficiently high sampling frequency and a filter matched to the fault signal enable fault detection within hundreds of microseconds and discrimination of DC faults from transients not related to DC faults.

关键词： HVDC matched filter measurement power system faults power system transients

Functional responses of cougars(Puma concolor)in a multiple prey-species system

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Integrative Zoology 2018年第1期13卷 84-93页

作者： Leroy SORIA-DÍAZ mike SFOWLER Octavio MONROY-VILCHIS Daniel ORO Institute of Applied Ecology Autonomous University of TamaulipasVictoria city TamaulipasMexico Department of Biosciences Swansea UniversitySwanseaUK Center for Research in Applied Biological Sciences Autonomous University of the State of MexicoCentro TolucaMexico Population Ecology Group Mediterranean Institute for Advanced Studies IMEDEA(CSIC-UIB)EsporlesMallorcaSpain

The study of predator-prey interactions is commonly analyzed using functional responses to gain an understanding of predation patterns and the impact they have on prey *** this,little is known about predator-prey systems with multiple prey species in sites near the *** we studied the functional response of cougars(Puma concolor)in relation to their main prey,armadillo(Dasypus novemcinctus),coati(Nasua narica)and white-tailed deer(Odocoileus virginianus).Between 2004 and 2010,cougar scats were collected along 5 transects to estimate the consumption of different prey species.A relative abundance index(RAI)was calculated for each prey species and cougar using 18 camera *** compared Holling type I,II and III functional response models to determine patterns in prey consumption based on the relative abundance and biomass of each prey species *** 3 main prey species comprised 55%(armadillo),17%(coati)and 8%(white-tailed deer)of the *** I and II functional responses described consumption of the 2 most common prey species armadillos and coati similarly well,while a type I response best characterized consumption of white-tailed deer.A negative correlation between the proportions of armadillo versus coati and white-tailed deer biomass in cougar scats suggests switching to consume alternative prey,confirming high foraging plasticity of this *** work represents one of the few studies to compare functional responses across multiple prey species,combined with evidence for prey-switching at low densities of preferred prey.

关键词： cougar functional responses Holling model comparison multiple prey

Fermion dynamical symmetry and strongly-correlated electrons:A comprehensive model of high-temperature superconductivity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of physics 2020年第4期15卷 35-99页

作者： mike Guidry Yang Sun Lian-Ao Wu Cheng-Li Wu Department of Physics and Astronomy Universilty of TenesseeKnorilleTN 37996USA School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China IKERBASQUE Basque Foundation for Science48011 BilbaoSpainand Department of Theoretical Physics and History of ScienceBasque Country University(EHU/UPV)Post Office Bor 64448080 BilbaoSpain Department of Physics Chung-Yuan Christian UniversityChungliTaiwan 320China

We review application of the SU(4)model of strongly-correlated electrons to cuprate and iron-based superconductors.A minimal self-consistent generalization of BCS theory to incorporate antiferromag-netism on an equal footing with pairing and strong Coulomb repulsion is found to account system-atically for the major features of high-temperature superconductivity,with microscopic details of the parent compounds entering only *** provides a systematic procedure to separate es-sential from peripheral,suggesting that many features exhibited by the high-Te data set are of interest in their own right but are not central to the superconducting *** generally,we propose that the surprisingly broad range of conventional and unconventional superconducting and superfluid behavior observed across many fields of physics results from the systemnatic appearance of similar al-gebraic structures for the emergent ffoctive Harmiltonians,even though the microscopic Harmiltonians of the corresponding parent states may differ radically from each other.

关键词： strongly-correlated electrons SU(4)model fermian dynamical symmetry high-temperature superconductivity

GLOBAL MANUFACTURING VIRTUAL NETWORK (GMVN): A REVISITING OF THE CONCEPT AFTER THREE YEARS FIELDWORK

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Systems Science and Systems Engineering 2003年第4期12卷 432-448页

作者： Don FLEET mike GREGORY Institute for Manufacturing Engineering Department Cambridge University Cambridge CB2 1RX The United KingdomInstitute for Manufacturing Engineering Department Cambridge University Cambridge CB2 1RX The United Kingdom

The idea of the global manufacturing virtual network (GMVN) was introduced in 2000 in order to highlight an emerging as well as an alternative manufacturing system which will have strong impacts on industry and implications to management theory. During the last three years, more than thirty companies - based in the electronics, bio-pharmaceuticals, garment, and home electronics appliance industries - have been studied in the UK and China. The research project addresses the emergence of the collaborative manufacturing phenomenon at three levels - sector, system and enabling technology. This paper summarises preliminary research findings from fieldwork conducted over the last three years. It seeks to clarify the characteristics and functionality of GMVN through the case studies and to contrast it to other types of business model, such as the multinational corporations (MNC) and international strategic alliances (ISAs). It also raises some new research questions and themes for further research into GMVN.

关键词： Global manufacturing virtual network international supply network collaboration