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Multi-temporal NDVI analysis using UAV images of tree crowns in a northern Mexican pine-oak forest

Journal of Forestry Research 2023年第6期34卷 1855-1867页

作者： JoséLuis Gallardo-Salazar Marcela Rosas-Chavoya Marín Pompa-García Pablito Marcelo López-Serrano Emily García-Montiel Arnulfo Meléndez-Soto Sergio Iván jiménez-jiménez Instituto de Investigaciones Agropecuarias y Forestales Universidad Michoacana de San Nicolás de Hidalgo(UMSNH)58330 MoreliaMichoacánMexico Programa Institucional de Doctorado en Ciencias Agropecuarias y Forestales Universidad Juárez del Estado de DurangoRío Papaloapan y Blvd.DurangoValle del Sur s/n34120 DurangoDurangoMéxico Facultad de Ciencias Forestales Universidad Juárez del Estado de DurangoRío Papaloapan y Blvd.DurangoValle del Sur s/n34120 DurangoDurangoMéxico Instituto de Silvicultura e Industria de la Madera Universidad Juárez del Estado de DurangoBoulevard del Guadiana 501Ciudad UniversitariaTorre de Investigación34120 DurangoMéxico INIFAP-CENID RASPA Centro Nacional de Investigación Disciplinaria en Relación Agua-Suelo-Planta-Atmósfera Margen derecha canal Sacramento km 6.5Zona industrial35140 Gómez PalacioDurangoMexico

The use of unmanned aerial vehicles(UAV)for forest monitoring has grown significantly in recent years,providing information with high spatial resolution and temporal *** with multispectral sensors allow the use of indexes such as the normalized difference vegetation index(NDVI),which determines the vigor,physiological stress and photo synthetic activity of *** study aimed to analyze the spectral responses and variations of NDVI in tree crowns,as well as their correlation with climatic factors over the course of one *** study area encompassed a 1.6-ha site in Durango,Mexico,where Pinus cembroides,Pinus engelmannii,and Quercus grisea *** images were acquired with UAV and information on meteorological variables was obtained from NASA/POwER *** ANOVA explored possible differences in NDVI among the three *** correlation was performed to identify the linear relationship between NDVI and meteorological *** differences in NDVI values were found at the genus level(Pinus and Quercus),possibly related to the physiological features of the species and their *** grisea had the lowest NDVI values throughout the year which may be attributed to its sensitivity to relative humidity and *** the use of UAV with a multispectral sensor for NDVI monitoring allowed genera differentiation,in more complex forest analyses hyperspectral and LiDAR sensors should be integrated,as well other vegetation indexes be considered.

关键词： Multispectral images Normalized diff erence Vegetation index Phenology Unmanned aerial vehicles Multitemporal analysis

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Heart failure in the elderly

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Journal of Geriatric Cardiology 2021年第3期18卷 219-232页

作者： Pablo Díez-Villanueva César jiménez-Méndez Fernando Alfonso Cardiology Department Hospital Universitario La PrincesaUniversidad Autónoma de MadridCIBER-CVMadridSpain

Heart failure(HF)is a clinical syndrome caused by structural and/or functional cardiac abnormalities,resulting in a reduced cardiac output and/or elevated intracardiac filling pressures at rest or during *** is a major public health problem with high prevalence and incidence,involving both high morbidity and mortality,but also high economic *** incidence of HF progressively increases with age,reaching around 20%among people over 75 years ***,HF represents the leading cause of hospitalization in patients older than 65 years in western ***,some authors even consider HF a geriatric syndrome,entailing worse prognosis and high residual disability,and often associating some complex comorbidities,common in older population,that may further complicate the course of the *** the other hand,however,clinical course and prognosis may be often difficult to *** this article,main pathophysiological issues related to the aging heart are addressed,together with key aspects related to both diagnosis and prognosis in elderly patients with ***,main geriatric conditions,common in the elderly population,are reviewed,highlighting the importance of a comprehensive and multidisciplinary approach.

关键词： diagnosis elevated mortality

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The Correlation between N-Terminal Pro-Brain Natriuretic Peptide and Diastolic Function in Asymptomatic Patients at Risk of Developing Heart Failure

The Correlation between N-Terminal Pro-Brain Natriuretic Pep...

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作者： Evan jim Gunawan 重庆医科大学

学位级别：硕士

Objective: to identify the correlation between N-terminal pro-brainnatriuretic peptide （NT-proBNP） with diastolic function in asymptomaticpatients at risk of developing heart failure, and the role of NT-proBNP inidentifying diastolic dysfunction. Methods: eighty patients （age45–70years） were selected based onhistory of hypertension, diabetes mellitus, and coronary artery *** with at least one risk factor for HF were selected in this *** were enrolled in this study from January to July2011in FirstAffiliated Hospital of Chongqing Medical University. Left ventricular （LV）diastolic function was measured by conventional Doppler and TissueDoppler imaging （TDI） echocardiography of mitral annulus. PlasmaNT-proBNP concentration was measured by immunoassay. Results: There were36men and44women in this study. The mean age ofpatients was58.8years old. Hypertension was present in78/80patients（97.5%）;diabetes in32/80patients （40%）;and coronary artery disease in 25/80（31.3%）. In transmitral pulsed-wave Doppler velocity measurement,there was no significant difference of NT-proBNP between normal andimpaired relaxation （mild diastolic dysfunction）. Patients withpseudonormal filling （262.2±55.63pg/ml） and restrictive like pattern（781.5±152pg/ml） had significantly higher NT-proBNP level （p＜0.0005）.In TDI measurement, patients were grouped into3groups based on E/E’ratio ＜8（group1）, E/E’ ratio8-15（group2）, E/E’ ratio＞15（group3）. TheNT-proBNP level in group1was47.54±34.08pg/ml, group2was94.98±78.88pg/ml, and group3was781.5±152pg/ml. There was goodcorrelation between NT-proBNP and E/E’lateral （r=063;p＜0.0005）. Conclusion: NT-proBNP level increases as left ventricular diastolicfunction decreases, and there was good correlation between NT-proBNPwith E/E’ ratio. Patient with moderate-severe diastolic dysfunction hadhigher NT-proBNP level. NT-proBNP cannot be used for identification ofmild diastolic dysfunction in patient at risk of developing heart failure.

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Physics-based and data-driven modeling for stability evaluation of buried structures in natural clays

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第5期15卷 1248-1262页

作者： Fengwen Lai jim Shiau Suraparb Keawsawasvong Fuquan Chen Rungkhun Banyong Sorawit Seehavong Institute of Geotechnical Engineering Southeast UniversityNanjing211189China Faculty of Civil Engineering and Geosciences Delft University of Technology2628 CN Delftthe Netherlands School of Engineering University of Southern QueenslandToowoombaQLD4350Australia Department of Civil Engineering Thammasat School of EngineeringThammasat UniversityPathumthani12120Thailand College of Civil Engineering Fuzhou UniversityFuzhou350116China

This study presents a hybrid framework to predict stability solutions of buried structures under active trapdoor conditions in natural clays with anisotropy and heterogeneity by combining physics-based and data-driven ***-element limit analysis(FELA)with a newly developed anisotropic undrained shear(AUS)failure criterion is used to identify the underlying active failure mechanisms as well as to develop a numerical(physics-based)database of stability numbers for both planar and circular *** considerations are given for natural clays to three linearly increasing shear strengths in compression,extension,and direct simple shear in the AUS material *** obtained numerical solutions are compared and validated with published solutions in the literature.A multivariate adaptive regression splines(MARS)algorithm is further utilized to learn the numerical solutions to act as fast FELA data-driven surrogates for stability *** current MARS-based modeling provides both relative importance index and accurate design equations that can be used with confidence by practitioners.

关键词： Buried structures Natural clays Active trapdoor Undrained stability Multivariate adaptive regression splines (MARS) Finite element limit analysis(FELA)

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儿童肺功能的多因子及交互影响分析

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中国环境科学 2003年第6期23卷 561-565页

作者：胡伟 jim Zhang 魏复盛北京科技大学土木与环境工程学院北京100083 Environmental and Occupational Health Sciences Institute 中国环境监测总站北京100029

在儿童肺功能横断面数据基础上,运用多元线性回归,研究了影响儿童肺功能的多因子及其交互效应.结果表明,儿童肺功能指标主要受儿童基本体质情况、呼吸系统疾病和家庭室内暴露因子以及这些因子的交互影响.儿童肺功能与空气颗粒物(PM10-2.... 详细信息

在儿童肺功能横断面数据基础上,运用多元线性回归,研究了影响儿童肺功能的多因子及其交互效应.结果表明,儿童肺功能指标主要受儿童基本体质情况、呼吸系统疾病和家庭室内暴露因子以及这些因子的交互影响.儿童肺功能与空气颗粒物(PM10-2.5和TSP)的负相关比较显著,未发现与SO2和NOx有显著相关性.作者还对空气颗粒物与年均取暖期燃煤取暖、母乳喂养、呼吸系统疾病等因子的交互效应进行了研究,发现细颗粒物对儿童肺功能的影响更为不利.

关键词：颗粒物肺功能横断面研究交互效应

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Vulnerability of London’s Economy to Climate Change: Sensitivity to Production Loss

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Journal of Environmental Protection 2013年第6期4卷 548-563页

作者： Douglas Crawford-Brown Mark Syddall Dabo Guan jim hall Jun Li Katie Jenkins Rachel Beaven Cambridge Centre for Climate Change Mitigation Research University of Cambridge Cambridge UK Cambridge Econometrics Cambridge UK Environmental Change Institute University of Oxford Oxford UK School of Earth and Environment University of Leeds Leeds UK

A variant of the Adaptive Regional Input-Output model (ARIO) has been developed to explore the sensitivity of the London economy to loss of production capacity in sectors affected by climate change related damage. The model is designed for linking to an Event Accounting Matrix (EAM) produced by climate and engineering teams, and then follow this damage through direct and indirect losses in the economy during a recovery process that is either demand-led (in which recovery of production capacity takes place only as demand recovers) or investment-led (where recovery of production capacity can precede demand). Outputs from the model are used to assess the relative vulnerability of London’s economy to production capacity (Capital stock) loss in each of the 42 economic sectors, for purposes of identifying where to most effectively allocate resources to climate change adaptation strategies or to recovery operations when used in conjunction with an EAM. Measures of impact related to GDP loss, recovery time and the ratio of indirect to direct losses are developed for these scenarios. Results show that indirect losses are a significant component of total losses, with a multiplier of between 1.3 and 2 depending on the scale of initial damage.

关键词： Climate Change Vulnerability Resilience Indirect Losses Economic Recovery

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Relativistic Quadrupole Polarizability for the Ground State of Hydrogen-Like Ions

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Chinese Physics Letters 2012年第6期29卷 110-113页

作者： ZHANG Yong-Hui TANG Li-Yan ZHANG Xian-Zhou SHI Ting-Yun jim Mitroy Department of Physics Henan Normal UniversityXinxiang 453007 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan 430071 School of Engineering Charles Darwin UniversityDarwin NT 0909Australia

The static quadrupole polarizabilities for hydrogen-like ions from Z =1 to Z =100 in the 1S1/2 ground state are calculated to high precision by solving the Dirac equation using the B-spline Galerkin *** results are consistent with the expression of Kaneko [***.B 10 (1977) 3347] at low *** quadrupole oscillator strength sum Σn f(2)gn is computed to be zero to a very high degree of precision.

关键词： method spline oscillator

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凯瑟琳吉利厄姆大学预科

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建筑学报 2013年第8期 73-77页

作者： jim Luckey Trey Laird 邓洁 Daniel Fletcher Mike hall Amy King SHw建筑设计公司集团

凯瑟琳吉利厄姆大学预科是一所新颖的培养21世纪技能的学校。精心设计的开放空间赋予整个建筑以蓬勃的生命力,激发了使用者的社会和思想交流,对于组织所有功能区域来说这是最有效的途径。室内外空间的设计组织,在反映高校教学环境特征... 详细信息

凯瑟琳吉利厄姆大学预科是一所新颖的培养21世纪技能的学校。精心设计的开放空间赋予整个建筑以蓬勃的生命力,激发了使用者的社会和思想交流,对于组织所有功能区域来说这是最有效的途径。室内外空间的设计组织,在反映高校教学环境特征的同时,给予高中学生必要的监督。

关键词：大学预科吉利设计组织室内外空间开放空间思想交流功能区域环境特征

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IGS polar motion measurement accuracy

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Geodesy and Geodynamics 2017年第6期8卷 413-420页

作者： jim Ray Paul Rebischung Jake Griffiths National Geodetic Survey Silver Spring MD USA IGN LAREG University Paris Diderot Sorbonne Paris Cite France Naval Research Laboratory Washington DC USA

we elaborate an error budget for the long-term accuracy of IGS（International Global Navigation Satellite System Service） polar motion estimates, concluding that it is probably about 25-30 μas（1-sigma）overall, although it is not possible to quantify possible contributions（mainly annual） that might transfer directly from aliases of subdaily rotational tide errors. The leading sources are biases arising from the need to align daily, observed terrestrial frames, within which the pole coordinates are expressed and which are continuously deforming, to the secular, linear international reference frame. Such biases are largest over spans longer than about a year. Thanks to the very large number of IGS tracking stations, the formal covariance errors are much smaller,around 5 to 10 μas. Large networks also permit the systematic frame-related errors to be more effectively minimized but not eliminated. A number of periodic errors probably also influence polar motion results, mainly at annual, GPS（Global Positioning System） draconitic, and fortnightly periods, but their impact on the overall error budget is unlikely to be significant except possibly for annual tidal aliases. Nevertheless, caution should be exercised in interpreting geophysical excitations near any of the suspect periods.

关键词： PM(Polar motion) GPS(Global Positioning System) EOPs(Earth orientation parameters) Accuracy IGS(International GNSS Service)

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Synthesis and characterization of carbon-TiO2-CeO2 composites and their applications in phenol degradation

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Journal of Rare Earths 2017年第6期35卷 551-558页

作者： Y.Lara-López G.García-Rosales J.jiménez-Becerril Technological Institute of Toluca Posgrade and Research Division Ex-Rancho La Virgen S/N C.P. 50120 Metepec Mexico National Institute for NuclearResearch Chemistry Department. Carretera Mexico-Toluca S/N la Marquesa Ocoyoacac C.P. 52750 Mexico

The objective of this work was to synthesize particles of titanium oxide and cerium oxide supported on carbon, which was obtained through the pyrolysis of orange peel. The materials were characterized using scanning electron microscopy, X-ray diffraction, infrared spectroscopy, and the specific surface area from Brunauer-Emmett-Teller method. The photocatalytic properties of the synthesized materials were determined by the degradation of phenol in 30 mg/L aqueous solutions. TiO2-CeO2 particles were obtained with an average spherical size of 57 nm and were supported on the carbon surface; this material presented a specific surface area of 296 m2/g and degrades -40% of phenol after 240 min of UV irradiation.

关键词： phenol photocatalytic spherical pyrolysis irradiation Teller Brunauer ceria orange cerium

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