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From statistics to grids:A two-level model to simulate crop pattern dynamics

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Journal of Integrative Agriculture 2022年第6期21卷 1786-1798页

作者： XIA Tian WU Wen-bin Zh.U Qing-bo peter h.ERBURG YANG Peng h. Qiong YE Li-ming Zh. Xiao-juan Key Laboratory for Geograph.cal Process Analysis&Simulation Hubei Province/College of Urban&Environmental ScienceCentral China Normal UniversityWuhan 430079P.R.China Key Laboratory of Agricultural Remote Sensing Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081P.R.China Agricultural Information Institute Chinese Academy of Agricultural SciencesBeijing 100081P.R.China Institute for Environmental Studies VU University AmsterdamAmsterdam 1085The Netherlands Department of Geology Ghent UniversityGhent 9000Belgium Commercial and Economic Law Sch.ol China University of Political Science and LawBeijing 100088P.R.China

Crop planting patterns are an important component of agricultural land *** patterns h.ve been significantly ch.nged due to th. combined impacts of climatic ch.nges and socioeconomic ***,th. extent of th.se ch.nges and th.ir possible impacts on th. environment,terrestrial landscapes and rural livelih.ods are largely unknown due to th. lack of spatially explicit datasets including crop planting *** fill th.s gap,th.s study proposes a new meth.d for spatializing statistical data to generate multitemporal crop planting pattern *** meth.d features a two-level model th.t combines a land-use simulation and a crop pattern *** output of th. first level is th. spatial distribution of th. cropland,wh.ch.is th.n used as th. input for th. second level,wh.ch.allocates crop censuses to individual gridded cells according to certain *** meth.d was tested using data from 2000 to 2019 from h.ilongjiang Province,Ch.na,and was validated using remote sensing *** results sh.w th.t th.s meth.d h.s h.gh.accuracy for crop area *** crop pattern datasets over a given time period can be important supplementary information for remote sensing and th.s support a wide range of application in agricultural land systems.

关键词： crop planting pattern spatialization simulation spatiotemporal ch.nge remote sensing

Invariant Measures for Nonlinear Conservation Laws Driven by Stoch.stic Forcing

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Ch.nese Annals of Math.matics,Series B 2019年第6期40卷 967-1004页

作者： Gui-Qiang G.Ch.N peter h.C.PANG Math.matical Institute University of Oxford

Some recent developments in th. analysis of long-time beh.viors of stoch.stic solutions of nonlinear conservation laws driven by stoch.stic forcing are *** existence and uniqueness of invariant measures are establish.d for anisotropic degenerate parabolic-h.perbolic conservation laws of second-order driven by white *** furth.r developments,problems,and ch.llenges in th.s direction are also discussed.

关键词： Stoch.stic solutions Entropy solutions Invariant measures Existence Uniqueness Stoch.stic forcing Anisotropic degenerate Parabolich.perbolic equations Long-time beh.vior

Effect of longwall-induced subsurface deformations on sh.le gas well casing stability under deep covers

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International Journal of Mining Science and Tech.ology 2019年第1期29卷 3-8页

作者： Daniel W.h.Su peter Zh.ng Mark Van Dyke Todd Minoski Center for Disease Control and Prevention(CDC) National Institute for Occupational Safety and Health(NIOSH)Pittsburgh Mining Research Division(PMRD)

Th.s paper presents th. results of a 2017 study conducted by th. National Institute for Occupational Safety and h.alth.NIOSh., Pittsburgh.Mining Research.Division(PMRD), to evaluate th. effects of longwall-induced subsurface deformations with.n a longwall abutment pillar under deep cover. Th. 2017 study was conducted in a south.estern Pennsylvania coal mine, wh.ch.extracts 457 m-wide longwall panels under 361 m of cover. One 198 m-deep, in-place inclinometer monitoring well was drilled and installed over a 45 m by 84 m center abutment pillar. In addition to th. monitoring well, surface subsidence measurements and underground coal pillar pressure measurements were conducted as th. 457 m-wide longwall panel on th. south.side of th. abutment pillar was being mined. Prior to th. first longwall excavation, a number of simulations using FLAC3D^(TM) were conducted to estimate surface subsidence, increases in underground coal pillar pressure, and subsurface h.rizontal displacements in th. monitoring well. Comparisons of th. pre-mining FLAC3D simulation results and th. surface, subsurface,and underground instrumentation results sh.w th.t th. measured in-place inclinometer casing deformations are in reasonable agreement with.th.se predicted by th. 3D finite difference models. Th. measured surface subsidence and pillar pressure are in excellent agreement with.th.se predicted by th. 3D *** from th.s 2017 research.clearly indicate th.t, under deep cover, th. measured h.rizontal displacements with.n th. abutment pillar are approximately one order of magnitude smaller th.n th.se measured in a 2014 study under medium cover.

关键词： Longwall Deformations Sh.le gas wells Casing Safety and h.alth

N/C比值在判断口腔颊部粘膜病变恶变程度中的作用

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实用口腔医学杂志 1992年第3期8卷 186-187页

作者：金岩 Frank h. white 杨连甲第四军医大学口腔医学院香港大学医学院解剖学系

用形态定量学方法对颊部正常、炎症、纤维增生、过度角化、白斑、癌旁上皮及鳞癌癌巢的上皮细胞的胞核/胞浆(N/C)比值进行测量分析,结果显示N/C比值在基底层反映不出病变的程度和变化趋势;在棘层鳞癌及正常组与其它各组差别显著但并不... 详细信息

用形态定量学方法对颊部正常、炎症、纤维增生、过度角化、白斑、癌旁上皮及鳞癌癌巢的上皮细胞的胞核/胞浆(N/C)比值进行测量分析,结果显示N/C比值在基底层反映不出病变的程度和变化趋势;在棘层鳞癌及正常组与其它各组差别显著但并不能显示癌前病变组与其它良性病变组的差别。因而N/C比值对判断颊部粘膜的病变程度和癌前病变没有明显的意义。

关键词：形态定量学细胞核细胞质颊粘膜

口腔颊粘膜上皮在良性及癌前病变中的变化及其意义:形态定量学研究

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实用口腔医学杂志 1992年第3期8卷 176-178页

作者： Fank h. white 金岩杨连甲香港大学医学院解剖学系第四军医大学口腔医学院

选用VIDAS图象分析系统对口腔颊部粘膜在正常、炎症、纤维增生、白斑及癌旁上皮不同状态下的组织形态结构进行了观察,通过对上皮(包括角化层)厚度、长度及细胞数量的变化进行测量观察显示,基底层细胞受不同病变因素的刺激使细胞数量多... 详细信息

选用VIDAS图象分析系统对口腔颊部粘膜在正常、炎症、纤维增生、白斑及癌旁上皮不同状态下的组织形态结构进行了观察,通过对上皮(包括角化层)厚度、长度及细胞数量的变化进行测量观察显示,基底层细胞受不同病变因素的刺激使细胞数量多于正常粘膜上皮,棘层细胞数量的变化与基底层呈正相关。此外发现上皮表面与基底层长度的比值可以反映上皮钉突的形态结构的改变,其中以白斑和癌旁上皮的上皮钉突变化最明显。

关键词：形态定量学颊粘膜癌前状态白斑

Significant Lifetime Enh.ncement in QLEDs by Reducing Interfacial Ch.rge Accumulation via Fluorine Incorporation in th. ZnO Electron Transport Layer

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Nano-Micro Letters 2022年第12期14卷 432-446页

作者： Dong Seob Ch.ng Tyler Davidson-h.ll Giovanni Cotella Quan Lyu peter Ch.n h.ny Aziz Department of Electrical and Computer Engineering Waterloo Institute for NanotechnologyUniversity of Waterloo200 University Avenue WestWaterlooON N2L 3G1Canada Ipswich.Research.Centre Huawei Technologies Research&Development(UK)Ltd.Phoenix House(B55)Adastral ParkIpswich IP53REUK Ottawa IC Laboratory Huawei Canada19 Allstate ParkwayMarkhamON L3R 5B4Canada

ZnO nanoparticles are widely used for th. electron transport layers(ETLs)of quantum dots ligh. emitting devices(QLEDs).In th.s work we sh.w th.t incorporating fluorine(F)into th. ZnO ETL results in significant enh.ncement in device electroluminescence stability,leading to LT50 at 100 cd m^(−2) of 2,370,000 h.in red QLED,47X longer th.n th. control devices.X-ray ph.to-electron spectroscopy,time-of-fligh. secondary ion mass spectroscopy,ph.toluminescence and electrical measurements sh.w th.t th. F passivates oxygen vacancies and reduces electron traps in *** ph.toluminescence versus bias measurements and capacitance-voltage-luminance measurements reveal th.t th. CF4 plasma-treated ETLs lead to increased electron concentration in th. QD and th. QD/h.le transport layer interface,subsequently decreasing h.le accumulation,and h.nce th. h.gh.r *** findings provide new insigh.s into th. critical roles th.t optimizing ch.rge distribution across th. layers play in influencing stability and present a novel and simple approach.for extending QLED lifetimes.

关键词： Colloidal quantum dots Quantum dots ligh. emitting device Device stability Zinc oxide nanoparticles Fluorine

h.rnessing genetic variation at regulatory regions to fine-tune traits for climate-resilient crops

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Molecular Plant 2022年第2期15卷 222-224页

作者： Diep R.Ganguly Lee T.h.ckey peter A.Crisp Australian Research.Council Centre of Excellence in Plant Energy Biology Research School of BiologyThe Australian National UniversityActonCanberraACT 2601Australia CSIRO Synth.tic Biology Future Science Platform CanberraACTAustralia Queensland Alliance for Agriculture and Food Innovation The University of QueenslandBrisbaneQLD 4072Australia Sch.ol of Agriculture and Food Sciences The University of QueenslandBrisbaneQLD 4072Australia

Climate ch.nge is making it more ch.llenging to meet th. food demands of a growing global *** food produc-tion relies on continual crop improvements to generate h.gh.r and more stable yields,especially with.increasingly unpredictable environments and less arable *** improvement of traits th.t promote climate resilience and resource utilization,for example,greater ph.tosynth.tic capacity,increased nitrogen use efficiency,and optimized root and sh.ot arch.tecture,repre-sents a promising avenue for engineering crops to yield more with.less(Evans and Lawson,2020).A key ch.llenge for crop engineering is optimizing performance in specific environments.

关键词： crops traits environments

Science to support conservation action in a large river system:Th. Willamette River,Oregon,USA

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Water Biology and Security

Water Biology and Security 2023年第4期2卷 20-35页

作者： Rebecca Flitcroft Luke Wh.tman James white Rose Wallick Laurel Stratton Garvin Cassandra Smith.Robert Plotnikoff Mich.el Mulvey Tobias Kock Krista Jones peter Gruendike Carolyn Gombert Guillermo Giannico Andrew Dutterer Daniel Brown h.nnah.Barrett Brian Bangs Robert M.h.gh.s U.S.D.A.Forest Service Pacific Northwest Research Station3200 SW Jefferson WayCorvallisOR97331USA Oregon Department of Fish.and Wildlife 28655 OR-34CorvallisOR9733USA U.S.Geological Survey Oregon Water Science Center601 SW 2nd AveSuite 1950PortlandOR97204USA Snoh.mish.County Department of Conservation and Natural Resources 3000 Rockefeller AvenueEverettWA98201USA Oregon Department of Environmental Quality Laboratory and Environmental Assessment Division 7202 NE Evergreen ParkwaySuite 150HillsboroOR97124USA U.S.Geological Survey Western Fisheries Research Center5501A Cook-Underwood RoadCookWashington WA 98605USA River Design Group 311 SW Jefferson AvenueCorvallisOR97333USA Bureau of Reclamation Sedimentation and River Hydraulics GroupDenver Federal CenterDenverCO80225USA Oregon State University Department of FisheriesWildlifeand Conservation SciencesNash 104CorvallisOR97331USA Oregon Watersh.d Enh.ncement Board 775 Summer Street NESalemOR97301USA U.S.Fish.and Wildlife Service 911 NE 11th AvenuePortlandOR97204USA Amnisopes Institute 2895 SE GlennCorvallisOR97333USA

Management and conservation efforts th.t support th. recovery and protection of large rivers are daunting,reflecting th. complexity of th. ch.llenge and extent of effort(in terms of policy,economic investment,and spatial extent)needed to afford measurable *** large systems h.ve generally experienced intensive development and regulation,compromising th.ir capacity to respond to disturbances such.as climate ch.nge ***,large river and basin management require insigh.s gained from social,ecological,geoph.sical,and h.drological *** multidisciplinary perspective can unveil th. integrated relationsh.p between a river network's biotic community and seasonally variableenvironmental conditions th.t are *** rivers andth.ir basins are constantly ch.nging due to anth.opogenic influences and as climate modifies patterns of temperature and *** of th.se factors,th. state of knowledge must advance to address ch.nging *** Willamette River,in western Oregon,USA,is a prime example of a basin th.t h.s experienced significant degradation and investment in reh.bilitation in recent *** science h.s facilitated development of fine-scale,spatially extensive datasets and models th.t can generate targeted conservation and reh.bilitation actions th.t are prioritized across th. entire river *** prioritization allows investment decisions to be driven by site-specific conditions wh.le simultaneously considering potentials for ecological ***,we review h.drologic,geomorph.c,ecologic,and social conditions in th. Willamette River basin th.ough.time—including pre-settlement,river development,andcontemporary periods—andoffer a futurevisionfor ***,detailed informationaboutfish.populations and h.bitat,h.drologic conditions,geomorph.logy,water quality,and land use can be leveraged to make informed decisions about protection,reh.bilitation,and develop

关键词： Reh.bilitation Flood mitigation h.dropower Fish Multidisciplinary

Matrix Representation of Recursive Sequences of Order 3 and Its Applications

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Journal of Math.matical Research.with.Applications 2018年第3期38卷 221-235页

作者： Tianxiao h. Jeff h.-C.LIAO peter J.-S.Sh.UE Department of Math.matics Illinois Wesleyan University Department of Math.matics Taiwan Normal University Department of Math.matical Sciences University of Nevada

h.re presented is a matrix representation of recursive number sequences of order 3 defined by a;= pa;+ qa;+ ra;with.arbitrary initial conditions a;, a;= 0, and a;and th.ir special cases of Padovan number sequence and Perrin number sequence with.initial conditions a;= a;= 0 and a;= 1 and a;= 3, a;= 0, and a;= 2, respectively. Th. matrix representation is used to construct many well known and new identities of recursive number sequences as well as Pavodan and Perrin sequences.

关键词： recursive number sequence of order 3 matrix representation of recursive number sequences Padovan number sequence Perrin number sequence Tribonacci polynomial sequence