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Fragility Assessment of Pre-Northridge Steel Moment Frames Using Finite-Length Plastic Hinge Elements and Concentrated Plasticity Fracture Elements

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Computer Modeling in Engineering & Sciences 2019年第9期120卷 657-676页

作者： Filipe L.A.Ribeiro andre RBarbosa luis CNeves National Laboratory of Civil Engineering(LNEC)&CERIS-Civil Engineering Research and Innovation for Sustainability DECivilUniversity of LisbonLisbonPortugal School of Civil and Construction Engineering Oregon State UniversityOregonUSA and University of BristolBristolUK Resilience Engineering Research Group University of NottinghamNottinghamUK.

Although pre-Northridge earthquake steel moment resisting frame buildings have been shown to be susceptible to brittle connection failures,they still represent a large fraction of the existing steel buildings in the United States of *** this study,the performance of the 3-and 9-story Los Angeles pre-Northridge SAC buildings are analyzed considering ductile and brittle beam-column connection failures,and their *** paper contributes to understanding the influence of uncertainty associated with connections brittle fracture on building interstory deformation capacity and its impact on bias and variability of fragility functions and loss *** results show that considering brittle connections leads to significantly l arger d rift demands a nd t o h igher r epair costs,particularly under intense ground *** fragility curve parameters are derived that account for the effect of the uncertainty of the strength and deformation capacity of brittle connections.

关键词： Brittle fracture finite-length p lastic h inge f ragility c urves r epair c ost ratio welded-flange connections

Modelling the role of ground-true riparian vegetation for providing regulating services in a Mediterranean watershed

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International Soil and Water Conservation Research 2023年第1期11卷 159-168页

作者： Bruno A.Aparício João Pedro Nunes Léonard Bernard-Jannin luis Filipe Dias andre Fonseca Teresa Ferreira cE3c-Centre for Ecology Evolution and Environmental Changes&CHANGE-Global Change and Sustainability InstituteFaculty of SciencesUniversity of LisbonLisbonPortugal Forest Research Centre&Laboratory TERRA School of AgricultureUniversity of LisbonLisbonPortugal Soil Physics and Land Management Group Wageningen University and ResearchWageningenNetherlands Longline Environment Ltd LondonUK

Intensive agricultural and industrial activities are often considered major sources of water ***,riparian vegetation(RV)is increasingly being promoted as a solution to balance the potentially adverse effects that agriculture may have on water ***,existing RV is often overlook in recent modelling efforts,failing to capture the current amount of ecosystem services ***,we used the Soil and Water Assessment Tool ecohydrological model to simulate the influence of ground-true RV on i)nutrient(nitrate and total phosphorus)and sediment exports from agricultural areas and ii)its effect for in-stream *** results are further compared against a set of hypothetical scenarios of different RV widths and different *** results point to a great rele-vance of existing RV in controlling in-stream concentration of sediments and nutrients where pressure from agriculture is highest,preventing them to surpass limits set in the EU Water Framework *** the other hand,in areas with industry discharges,the role of RV is limited and model results suggest that restoring RV would have limited *** illustrate how existing RV may already provide strong but not acknowledged water quality regulation services,how these services can differ substantially between nearby streams,and that effective strategies to improve water quality using RV must acknowledge existing patterns of vegetation,land use and contamination sources.

关键词： Agricultural pollution Riparian vegetation Ecosystem services Hydrological services Mediterranean region

Global mapping of volumetric water retention at 100,330 and 15000 cm suction using the WoSIS database

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International Soil and Water Conservation Research 2023年第2期11卷 225-239页

作者： Maria Eliza Turek Laura Poggio Niels H.Batjes Robson andre Armindo Quirijn de Jong van Lier luis de Sousa Gerard B.M.Heuvelink ISRIC-World Soll Information Wageningemthe Netherlands Graduate Program in Environmental Engineering Federal University of ParunaCurtibaR Brazil Soll Geography and Landscope Group Wageningen University Wageningenthe Netherlands Department of Physics Federul University of LavrasMGBrarll CENA-Universiy of Sao Poulo PinacicabasaoBrazil

Present global maps of soil water retention(SWR)are mostly derived from pedotransfer functions(PTFs)applied to maps of other basic soil *** an alternative,'point-based'mapping of soil water content can improve global soil data availability and *** developed point-based global maps with estimated uncertainty of the volumetric SWR at 100,330 and 15000 cm suction using measured SWR data extracted from the WoSIS Soil Profile Database together with data estimated by a random forest PTF(PTF-RF).The point data was combined with around 200 environmental covariates describing vegetation,terrain morphology,climate,geology,and hydrology using *** total,we used 7292,33192 and 42016 SWR point observations at 100,330 and 15000 cm,respectively,and complemented the dataset with 436108 estimated values at each *** cross-validation yielded a Root Mean Square Error(RMSE)of6380,7.112 and 6.48510^(-2)cm^(3)cm^(-3),and a Model Efficiency Coefficient(MEC)of0.430,0386,and 0.471,respectively,for 100,330 and 15000 *** results were also compared to three published global maps of SWR to evaluate differences between point-based and map-based mapping ***-based mapping performed better than the three map-based mapping approaches for 330 and 15000 cm,while for 100 cm results were similar,possibly due to the limited number of SWR observa-tions for 100 *** sources or uncertainty identified included the geographical clustering of the data and the limitation of the covariates to represent the naturally high variation of SWR.

关键词： Digital soil mapping Soil hydraulic properties Pedometrics SoilGrids

Static-based early-damage detection using symbolic data analysis and unsupervised learning methods

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Frontiers of Structural and Civil Engineering 2015年第1期9卷 1-16页

作者： Joao Pedro SANTOS Christian CREMONA andre D. ORCESI Paulo SILVEIRA luis CALADO Department of Structures Av. Brasil 101 Lisbon 1700-066 Portugal Technical Center for Bridge Engineering CEREMA B.P. 214 Provins Cedex 77487 France Materials and Structures Department IFSTTAR University Paris-Est 14-20 Boulevard Newton Champs sur Marne Marne la Vallee Cedex2 F-77447 France Department of Civil Engineering Technical University Lisbon Avenida Rovisco Pais Lisbon 1096 Portugal

A large amount of researches and studies have been recently performed by applying statistical and machine learning techniques for vibration-based damage detection. However, the global character inherent to the limited number of modal properties issued from operational modal analysis may be not appropriate for early-damage, which has generally a local character. The present paper aims at detecting this type of damage by using static SHM data and by assuming that early-damage produces dead load redistribution. To achieve this objective a data driven strategy is proposed, consisting of the combination of advanced statistical and machine learning methods such as principal component analysis, symbolic data analysis and cluster analysis. From this analysis it was observed that, under the noise levels measured on site, the proposed strategy is able to automatically detect stiffness reduction in stay cables reaching at least 1%.

关键词： structural health monitoring early-damage detection principal component analysis symbolic data symbolic dissimilarity measures cluster analysis numerical model damage simulations

Co-Simulation of an SRG Wind Turbine Control and GPRS/EGPRS Wireless Standards in Smart Grids

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IEEE/CAA Journal of Automatica Sinica 2021年第3期8卷 656-663页

作者： andre Luiz de Oliveira Carlos Eduardo Capovilla Ivan Roberto Santana Casella Joséluis Azcue-Puma Alfeu J.Sguarezi Filho University of Sao Paulo Sao Paulo 05508-010Brazil Federal University of ABC Santo Andre 09210-580Brazil

Wind energy can be considered a push-driver factor in the integration of renewable energy sources within the concept of smart *** its full deployment,it requires a modern telecommunication infrastructure for transmitting control signals around the distributed generation,in which,the wireless communication standards stand out for employing modern digital modulation and coding schemes for error correction,in order to guarantee the power plant *** some developing countries,such as Brazil,the high penetration of commercial mobile wireless standards GPRS and EGPRS(based on GSM technology)have captivated the interests of the energy sector,and they now seek to perform remote monitoring and control *** this context,this article presents a comparative performance analysis of a wireless control system for a wind SRG,when a GPRS or EGPRS data service is *** system performance is analyzed by co-simulations,including the wind generator dynamics and the wireless channel *** satisfactory results endorse the viability and robustness of the proposed system.

关键词： General packet radio service(GPRS)/enhanced GPRS(EGPRS) smart grids switched reluctance generator(SRG) wind energy wireless communications

Paternal physical exercise modulates global DNA methylation status in the hippocampus of male rat offspring

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Neural Regeneration Research 2019年第3期14卷 491-500页

作者： Christiano Spindler Ethiane Segabinazi andre luis Ferreira de Meireles Francele Valente Piazza Filipe Mega Gabriela dos Santos Salvalaggio Matilde Achaval Viviane Rostirola Elsner Simone Marcuzzo Programa de Pos-Graduacao em Neurociencias Instituto de Ciencias Basicas da Saude Universidade Federal do Rio Grande do Sul Laboratorio de Histofisiologia Comparada Departamento de Ciencias Morfologicas Instituto de Ciencias Basicas da Saude Universidade Federal do Rio Grande do Sul Programa de Pos-Graduacao em Biociências e Reabilitacao Centro Universitario Metodista-IPA

It is widely known that maternal physical exercise is able to induce beneficial improvements in offspring cognition; however, the effects of paternal exercise have not been explored in detail. The present study was designed to evaluate the impact of paternal physical exercise on memory and learning, neuroplasticity and DNA methylation levels in the hippocampus of male offspring. Adult male Wistar rats were divided into two groups: sedentary or exercised fathers. The paternal preconception exercise protocol consisted of treadmill running, 20 minutes daily, 5 consecutive days per week for 22 days, while the mothers were not trained. After mating, paternal sperm was collected for global DNA methylation analysis. At postnatal day 53, the offspring were euthanized, and the hippocampus was dissected to measure cell survival by 5-bromo-2′-deoxiuridine and to determine the expression of synaptophysin, reelin, brain-derived neurotrophic factor and global DNA methylation levels. To measure spatial memory and learning changes in offspring, the Morris water maze paradigm was used. There was an improvement in spatial learning, as well as a significant decrease in hippocampal global DNA methylation levels in the offspring from exercised fathers compared with those from sedentary ones; however, no changes were observed in neuroplasticity biomarkers brain-derived neurotrophic factor, reelin and 5-bromo-2′-deoxiuridine. Finally, the global DNA methylation of paternal sperm was not significantly changed by physical exercise. These results suggest a link between paternal preconception physical activity and cognitive benefit, which may be associated with hippocampal epigenetic programming in male offspring. However, the biological mechanisms of this modulation remain unclear.

关键词： epigenetics preconception methylation learning treadmill running fetal programming inheritance sperm nerve regeneration

Identifcation of Immunity-related Genes in Arabidopsis and Cassava Using Genomic Data

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Genomics, Proteomics & Bioinformatics 2013年第6期11卷 345-353页

作者： luis Guillermo Leal A'lvaro Perez andre's Quintero A'ngela Bayona Juan Felipe Ortiz Anju Gangadharan David Mackey Camilo Lo'pez Liliana Lo'pez-Kleine Department of Statistics Universidad Nacional de Colombia Department of Biology Universidad Nacional de Colombia Department of Molecular Genetics The Ohio State University

Recent advances in genomic and post-genomic technologies have provided the opportu- nity to generate a previously unimaginable amount of information. However, biological knowledge is still needed to improve the understanding of complex mechanisms such as plant immune responses. Better knowledge of this process could improve crop production and management. Here, we used holistic analysis to combine our own microarray and RNA-seq data with public genomic data from Arabidopsis and cassava in order to acquire biological knowledge about the relationships between proteins encoded by immunity-related genes （IRGs） and other genes. This approach was based on a kernel method adapted for the construction of gene networks. The obtained results allowed us to propose a list of new IRGs. A putative function in the immunity pathway was predicted for the new IRGs. The analysis of networks revealed that our predicted IRGs are either well documented or recognized in previous co-expression studies. In addition to robust relationships between IRGs, there is evidence suggesting that other cellular processes may be also strongly related to immunity.

关键词： Arabidopsis Cassava Functional gene prediction Genomic data Kernel canonical correlation ajalysi Plant immunity

Future perspective of focal therapy for localized prostate cancer

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Asian Journal of Urology 2021年第4期8卷 354-361页

作者： Luke P.O’Connor Shayann Ramedani Michael Daneshvar Arvin K.George andre luis Abreu Giovanni E.Cacciamani Amir H.Lebastchi Urologic Oncology Branch National Cancer InstituteNational Institutes of HealthBethesdaMDUSA College of Medicine The Pennsylvania State UniversityHersheyPAUSA Department of Urology University of MichiganAnn ArborMIUSA Center for Image-Guided and Focal Therapy for Prostate Cancer Institute of Urology and Catherine and Joseph Aresty Department of UrologyKeck School of MedicineUniversity of Southern CaliforniaLos AngelesCAUSA Institute of Urology and Catherine and Joseph Aresty Department of Urology Keck School of MedicineUniversity of Southern CaliforniaLos AngelesCAUSA

Objective:To summarize the recent literature discussing focal therapy for localized prostate ***:A thorough literature review was performed using PubMed to identify recent studies involving focal therapy for the treatment of localized prostate ***:In an effort to decrease the morbidity associated with prostate cancer treatment,many urologists are turning to focal therapy as an alternative treatment *** this approach,the cancer bearing portion of the prostate is targeted while leaving the benign tissue *** magnetic resonance imaging remains the gold standard for visualization during focal therapy,but new imaging modalities such as prostate specific membrane antigen/positron emission tomography and contrast enhanced ultrasound are being ***,several biomarkers,such as prostate cancer antigen 3 and prostate health index,are used in conjunction with imaging to improve risk stratification prior to focal ***,there are several novel technologies such as nanoparticles and transurethral devices that are under investigation for use in focal ***:Focal therapy is proving to be a promising option for the treatment of localized prostate ***,further study is needed to determine the true efficacy of these exciting new technologies.

关键词： Focal therapy Prostate cancer Multiparametric magnetic resonance imaging Imaging Innovation Technology

Height-to-diameter ratios with temporal and dendro/morphometric variables for Brazilian pine in south Brazil

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Journal of Forestry Research 2021年第1期32卷 191-202页

作者： andre Felipe Hess Myrcia Minatti Emanuel Arnoni Costa luis Paulo Baldissera Schorr Gabriel Teixeira da Rosa Isadora de Arruda Souza Geedre Adriano Borsoi Veraldo Liesenberg Thiago Floriani Stepka Roberta Abatti Department of Forest Engineering Santa Catarina State University2090 Luiz de Camoes AvenueLagesSanta Catarina State 88520-000Brazil Department of Forest Engineering Federal University of Parana(UFPR)Pref.Lothario Meissner Ave.900CuritibaParana 80060-000Brazil

Height-to-diameter ratios(HD)are an important measure of the stability,density and competition of forest *** refl ects the vertical growth of the trees,the vulnerability of the forest canopy structure and infl uences volumetric *** ratios vary according to tree size,availability of resources for growth,stand density and species *** were taken from 210 trees and a regression technique of generalized linear models for the HD ratio applicable for forest structure conservation was *** objective of this study was to model the HD ratios of dominant and co-dominant trees of Araucaria angustifolia according to morphometric,dendrometric,annual diameter increment,stand density,and age variables in three sites in southern *** results show that the HD ratio decreases with increasing age,crown area and basal area,and increases with stand density and annual diameter *** of the developed equations was demonstrated by the values of deviation,Bayesian and Akaike *** results are of interest to forest managers since they make decisions about silvicultural *** continuity and forest production indicate that any intervention should be directed at younger trees of smaller sizes,and that one of the main management factors for stand stability and growth is the formation of the stand and its capture of light.

关键词： Forest management Mixed forests Conservation Araucaria angustifolia