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Mapping fractional landscape soils and vegetation components from Hyperion satellite imagery using an unsupervised machinelearning workflow

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International Journal of Digital Earth 2018年第7期11卷 670-690页

作者： Michael J.Friedel Massimo Buscema Luiz Eduardo vicente Fabio Iwashita Andréa Koga-vicente Hydrogeology Department GNS ScienceLower HuttNew Zealand Mathematical&Statistical Sciences University of ColoradoDenverCOUSA Semeion Institute RomeItaly Satellite Monitoring Unit Brazilian Corporation of Agricultural Research-EMBRAPACampinasBrazil Earth Sciences Department University of FlorenceFlorenceItaly Center for Meteorological and Climatological Research in Agriculture University of CampinasCampinasBrazil

An unsupervised machine-learning workflow is proposed for estimating fractional landscape soils and vegetation components from remotely sensed hyperspectral *** workflow is applied to EO-1 Hyperion satellite imagery collected near Ibirací,Minas Gerais,*** proposed workflow includes subset feature selection,learning,and estimation *** training with landscape feature class realizations provide a hypersurface from which to estimate mixtures of soil(e.g.0.5 exceedance for pixels:75%clay-rich Nitisols,15%iron-rich Latosols,and 1%quartz-rich Arenosols)and vegetation(e.g.0.5 exceedance for pixels:4%Aspen-like trees,7%Blackberry-like trees,0%live grass,and 2%dead grass).The process correctly maps forests and iron-rich Latosols as being coincident with existing drainages,and correctly classifies the clay-rich Nitisols and grasses on the intervening *** classifications are independently corroborated visually(Google Earth)and quantitatively(random soil samples and crossplots of field spectra).Some mapping challenges are the underestimation of forest fractions and overestimation of soil fractions where steep valley shadows exist,and the under representation of classified grass in some dry areas of the Hyperion *** preliminary results provide impetus for future hyperspectral studies involving airborne and satellite sensors with higher signal-to-noise and smaller footprints.

关键词： Hyperspectral machine learning remote sensing soils and vegetation unsupervised workflow

A building energy models calibration methodology based on inverse modelling approach

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Building Simulation 2022年第11期15卷 1883-1898页

作者： vicente Gutiérrez González Carlos Fernández Bandera Installations construction and structuresSchool of ArchitectureUniversity of NavarraCampus UniversitarioPamplona31009NavarraSpain

Nowadays,building energy models(BEMs)are widely used,particularly in the assessment of energy consumption in buildings to address the potential savings that can be *** realisation of a dynamic energy model based on high-fidelity physics(white-box models)requires a tuning process to fit the model to reality,due to many uncertainties *** some research trends try to reduce this performance gap by modulating different types of experimental parameters such as:capacitances or *** EnergyPlus simulation software,in its latest versions,has implemented an object:HybridModel:Zone that calculates the infiltration and internal mass of buildings using an inverse modelling approach that employs only the measured indoor temperature data to invert the heat balance equation for the zone under *** main objective of this paper is to reduce the execution time and uncertainties in the development of quality energy models by generating a new calibration methodology that implements this *** uses,as a starting point,a research created by the authors of this study,which was empirically and comparatively validated against the energy models developed by the participants in Annex *** is also worth highlighting the empirical validation of the HybridModel:Zone object,since it was activated in all scenarios where its execution is possible:periods of seven days or more of free oscillation and periods in which the building is under *** findings are *** data generated with the new methodology,if compared with those produced by the baseline model,improve their resemblance to the real ones by 22.9%.While those of its predecessor did it by 15.6%.For this study,the two dwellings foreseen in Annex 58 of the IEA ECB project have been modelled and their real monitoring data have been used.

关键词： internal thermal mass energy simulation EnergyPlus inverse model Annex 58 infiltration

Prevention of late complications with coverage agents in endoscopic resection of colorectal lesions: Current landscape in gastrointestinal endoscopy

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World Journal of Gastroenterology 2021年第15期27卷 1563-1568页

作者： vicente Lorenzo-Zúñiga Marco Bustamante-Balén vicente Pons-Beltrán Endoscopy Unit Department of GastroenterologyHospital Universitari i Politècnic La FeValencia 46026Spain Digestive Diseases Department La Fe Polytechnic University HospitalValencia 46026Spain

Endoscopic removal of large(≥20 mm)non-pedunculated colorectal lesions(LNPCLs)may result in major adverse events,such as delayed bleeding(DB)and delayed perforation(DP),despite closure of the mucosal defects with *** application of a coverage agent refers to the creation of a shield with a biocompatible medical device(tissue or hydrogel)with proven bioactive *** of the eschar after endoscopic resection provides shielding protection to prevent delayed *** aim of the present review was to systematically collect and review the currently available literature regarding the prevention of DB and DP with coverage agents after endoscopic mucosal resection or endoscopic submucosal dissection of LNPCLs.

关键词： Large colorectal lesions Delayed bleeding Topical application Endoscopic mucosal resection Endoscopic submucosal dissection

Shallow landslide susceptibility assessment under future climate and land cover changes: A case study from southwest China

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Geoscience Frontiers 2023年第4期14卷 21-41页

作者： Zizheng Guo Joaquin vicente Ferrer Marcel Hürlimann vicente Medina Carol Puig-Polo Kunlong Yin Da Huang School of Civil and Transportation Engineering Hebei University of Technology300401 TianjinChina Division of Geotechnical Engineering and Geosciences Department of Civil and Environmental EngineeringUPC BarcelonaTECH08034 BarcelonaSpain Faculty of Engineering China University of Geosciences430074 WuhanChina Institute of Environmental Science and Geography University of Potsdam14476 PotsdamGermany Potsdam Institute for Climate Impact Research 14473 PotsdamGermany College of Geological Engineering and Geomatics Chang’an University710064 Xi’anChina

There is no doubt that land cover and climate changes have consequences on landslide activity,but it is still an open issue to assess and quantify their *** County in southwest China was selected as the test area to study rainfall-induced shallow landslide susceptibility under the future changes of land use and land cover(LULC)and *** used a high-resolution meteorological precipitation dataset and frequency distribution model to analyse the present extreme and antecedent rainfall conditions related to landslide *** future climate change factors were obtained from a 4-member multimodel ensemble that was derived from statistically downscaled regional climate *** future LULC maps were simulated by the land change modeller(LCM)integrated into IDRISI Selva software.A total of six scenarios were defined by considering the rainfall(antecedent conditions and extreme events)and LULC changes towards two time periods(mid and late XXI century).A physically-based model was used to assess landslide susceptibility under these different *** results showed that the magnitude of both antecedent effective recharge and event rainfall in the region will evidently increase in the *** the scenario with a return period of 100 years,the antecedent rainfall in summer will increase by up to 63%whereas the event rainfall will increase by up to 54%for the late 21st *** most considerable changes of LULC will be the increase of forest cover and the decrease of farming *** magnitude of this change can reach+22.1%(forest)and–9.2%(farmland)from 2010 until 2100,*** found that the negative impact of climate change on landslide susceptibility is greater than the stabilizing effect of LULC change,leading to an over decrease in stability over the study *** is one of the first studies across Asia to assess and quantify changes of regional landslide susceptibility under scenarios driven by LULC and climate ***

关键词： Rainfall-induced landslide Susceptibility Climate change Land cover change China

PM_(2.5) chemical composition and health risks by inhalation near a chemical complex

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Journal of Environmental Sciences 2023年第2期124卷 860-874页

作者： Celia Alves Margarita Evtyugina Estela vicente Ana vicente Ismael Casotti Rienda Ana Sanchez de la Campa Mario Tome Iola Duarte Department of Environment Centre for Environmental and Marine Studies(CESAM)University of Aveiro3810-193 AveiroPortugal Associate Unit CSIC-University of Huelva“Atmospheric Pollution” Centre for Research in Sustainable Chemistry-CIQSOUniversity of HuelvaE21071 HuelvaSpain Department of Mining MechanicEnergetic and Construction EngineeringETSIUniversity of Huelva21071 HuelvaSpain PROMETHEUS School of Technology and Management(ESTG)Polytechnic Institute of Viana do Castelo4900-348 Viana do CasteloPortugal Department of Chemistry CICECO-Aveiro Institute of MaterialsUniversity of Aveiro3810-193 AveiroPortugal

Particulate matter(PM_(2.5))samples were collected in the vicinity of an industrial chemical pole and analysed for organic and elemental carbon(OC and EC),47 trace elements and around 150 organic *** average,OC and EC accounted for 25.2% and 11.4% of the PM_(2.5) mass,*** compounds comprised polycyclic aromatic hydrocarbons(PAHs),alkylated PAHs,anhydrosugars,phenolics,aromatic ketones,glycerol derivatives,aliphatic alcohols,sterols,and carboxyl groups,including aromatic,carboxylic and dicarboxylic *** factors>100 were obtained for Pb,Cd,Zn,Cu,Sn,B,Se,Bi,Sb and Mo,showing the contribution of industrial emissions and nearby major *** component analysis revealed that vehicle,industrial and biomass burning emissions accounted for 66%,11% and 9%,respectively,of the total PM_(2.5)-bound *** of the detected organic constituents are likely associated with plasticiser ingredients and thermal stabilisers used in the manufacture of PVC and other plastics in the industrial *** products of both anthropogenic(e.g.,toluene)and biogenic(e.g.,isoprene and pinenes)precursors were also *** was estimated that biomass burning accounted for 13.8%of the PM_(2.5) concentrations and that secondary OC represented 37.6% of the total *** lifetime cancer risk from inhalation exposure to PM_(2.5)-bound PAHs was found to be negligible,but it exceeded the threshold of 10−6 for metal(loi)s,mainly due to Cr and As.

关键词： PM_(2.5) OC/EC Organic speciation Trace elements Cancer and non-cancer risks

Biodegradable stents in gastrointestinal endoscopy

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World Journal of Gastroenterology 2014年第9期20卷 2212-2217页

作者： vicente Lorenzo-Zú?iga vicente Moreno-de-Vega Ingrid Marín Jaume Boix Endoscopy Unit Department of Gastroenterology Hospital Universitari Germans Trias i Pujol 08916 Badalona Spain Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD) 08916 Badalona Spain

Biodegradable stents(BDSs)are an attractive option to avoid ongoing dilation or surgery in patients with benign stenoses of the small and large *** experience with the currently the only BDS for endoscopic placement,made of Poly-dioxanone,have shown promising *** some aspects should be improved as are the fact that BDSs lose their radial force over time due to the degradable material,and that can cause stent-induced mucosal or parenchymal *** complication rate and modest clinical efficacy has to be carefully considered in individual patients prior to placement of ***,the price of these stents therefore it is nowadays an important limitation.

关键词： Biodegradable stents Strictures Endoscopy Endoscopic placement Stenoses

Hepatitis B transmission by cell and tissue allografts:How safe is safe enough?

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World Journal of Gastroenterology 2014年第23期20卷 7434-7441页

作者： Pilar Solves vicente Mirabet Manuel Alvarez Blood Bank Hospital Universitari I Politècnic La FeBulevar Sur46026 ValenciaSpain

More than 2 million human tissue transplants(bone,tendon,cartilage,skin,cornea,amniotic membrane,stem cells,heart valve,blood vessel,etc.),are performed worldwide every *** and tissues are shared between countries which have different regulations and laboratory equipment and represent a risk of hepatitis B virus(HBV)transmission that has become a global safety *** the risk of transfusiontransmitted HBV infection from blood donations has been estimated,the rate of HBV transmission from donors to recipients of allografts is unknown and varies between different *** are various important ways of reducing the transmission risk,but donor screening and donor testing are still the main factors for preventing HBV *** detection is included in the routine screening tests for cell and tissue *** standard test for preventing transplant-transmitted hepatitis B is the hepatitis B surface *** implementation of methods involving nucleic acid amplification and the new generation of reactives to detect viral antibodies or antigens with an immunoassay,has increased the sensitivity and the specificity of the screening *** objective of our research was to review the literature and critically analyse the different steps for avoiding HBV transmission in cell and tissue donors,focusing on the screening tests performed.

关键词： Hepatitis B virus Tissue bank Tissue transplantation

The use of Artificial Neural Networks to estimate seismic damage and derive vulnerability functions for traditional masonry

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Frontiers of Structural and Civil Engineering 2020年第3期14卷 609-622页

作者： Tiago Miguel FERREIRA Joao ESTEVAO Rui MAIO Romeu vicente ISISE Institute of Science and Innovation for Bio-Sustainability(IB-S)Department of Civil EngineeringUniversity of MinhoGuimaraes 4800-058Portugal Department of Civil Engineering University of AlgarveFaro 8005-139Portugal RISCO Department of Civil EngineeringUniversity of AveiroAveiro 3810-193Portugal

ABSTRACT This paper discusses the adoption of Artificial Intelligence-based techniques to estimate seismic damage,not with the goal of replacing existing approaches,but as a mean to improve the precision of empirical *** such,damage data collected in the aftermath of the 1998 Azores earthquake(Portugal)is used to develop a comparative analysis between damage grades obtained resorting to a classic damage formulation and an innovative approach based on Artificial Neural Networks(ANNs).The analysis is carried out on the basis of a vulnerability index computed with a hybrid seismic vulnerability asssment methodology,which is subsequently used as input to both *** results obtained are then compared with real post-earthquake damage observation and critically discussed taking into account the level of adjustment achieved by each ***,a computer routine that uses the ANN as an approximation function is developed and applied to derive a new vulnerability curve *** general terms,the ANN developed in this study allowed to obtain much better approximations than those achieved with the original vulnerability approach,which has revealed to be quite ***,the proposed vulnerability curve expression was found to provide a more accurate damage prediction than the traditional analytical expressions.

关键词： Artificial Neural Networks seismic vulnerability masonry buildings damage estimation,vulnerability curves

Optimal heat release shaping in a reactivity controlled compression ignition （RCCI） engine

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Control Theory and Technology 2017年第2期15卷 117-128页

作者： Carlos GUARDIOLA Benjamin PLA Antonio GARCiA vicente BORONAT CMT-Motores Termicos Universitat Politecnica de Valencia Valencia Spain

The present paper addresses the optimal heat release （HR） law in a single cylinder engine operated under reactivity controlled compression ignition （RCCl） combustion mode to minimise the indicated specific fuel consumption （ISFC） subject to different constraints including pressure related limits （maximum cylinder pressure and maximum cylinder pressure gradient）. With this aim, a 0-dimensional （OD） engine combustion model has been identified with experimental data. Then, the optimal control problem of minimising the ISFC of the engine at different operating conditions of the engine operating map has been stated and analytically solved. To evaluate the method viability a data-driven model is developed to obtain the control actions （gasoline fraction） leading to the calculated optimal HR, more precisely to the optimal ratio between premixed and diffusive combustion. The experimental results obtained with such controls and the differences with the optimal HR are finally explained and discussed.

关键词： Diesel engine RCCI combustion analysis optimal control