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Exponential Continuous Non-Parametric Neural Identifier With Predefined Convergence Velocity

IEEE/CAA Journal of Automatica Sinica 2022年第6期9卷 1049-1060页

作者： Mariana Ballesteros Rita Q.fuentes-Aguilar Isaac Chairez Instituto Politécnico Nacional Centro de Innovación y Desarrollo Tecnológico en Cómputo Unidad Profesional Interdisciplinaria de Biotecnología 07340Mexico CityMexico Tecnológico de Monterrey School of Engineering and SciencesZapopanJalisco 45138Mexico Department of Bioprocesses UPIBIInstituto Politécnico Nacional07340Mexico City

This paper addresses the design of an exponential function-based learning law for artificial neural networks(ANNs)with continuous *** ANN structure is used to obtain a non-parametric model of systems with uncertainties,which are described by a set of nonlinear ordinary differential *** novel adaptive algorithms with predefined exponential convergence rate adjust the weights of the *** first algorithm includes an adaptive gain depending on the identification error which accelerated the convergence of the weights and promotes a faster convergence between the states of the uncertain system and the trajectories of the neural *** second approach uses a time-dependent sigmoidal gain that forces the convergence of the identification error to an invariant set characterized by an *** generalized volume of this ellipsoid depends on the upper bounds of uncertainties,perturbations and modeling *** application of the invariant ellipsoid method yields to obtain an algorithm to reduce the volume of the convergence region for the identification *** adaptive algorithms are derived from the application of a non-standard exponential dependent function and an associated controlled Lyapunov *** examples demonstrate the improvements enforced by the algorithms introduced in this study by comparing the convergence settings concerning classical schemes with non-exponential continuous learning *** proposed identifiers overcome the results of the classical identifier achieving a faster convergence to an invariant set of smaller dimensions.

关键词： Exponential Lyapunov functions learning laws non-parametric identifier predefined convergence rate

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母亲暴露于常规空气污染物与后代的先天性心脏缺陷:来自全国出生缺陷预防研究的结果

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环境与职业医学 2014年第12期31卷 929-929页

作者： Jeanette A.Stingone Thomas J.Luben Julie L.Daniels montserrat fuentes David B.Richardson Arthur S.Aylsworth Amy H.Herring Marlene Anderka Lorenzo Botto Adolfo Correa Suzanne M.Gilboa Peter H.Langlois Bridget Mosley Gary M.Shaw Csaba Siffel Andrew F.Olshan National Birth Defects Prevention Study

[背景]流行病学文献表明,空气污染物暴露与胎儿的发育相关联。[目的]探讨产妇在妊娠2-8周期间的空气污染物暴露及其与先天性心脏缺陷的关联。[方法]此项出生缺陷预防研究是一项由9个州参加的病例对照研究。给参加这项研究的妊娠妇女分配... 详细信息

[背景]流行病学文献表明,空气污染物暴露与胎儿的发育相关联。[目的]探讨产妇在妊娠2-8周期间的空气污染物暴露及其与先天性心脏缺陷的关联。[方法]此项出生缺陷预防研究是一项由9个州参加的病例对照研究。给参加这项研究的妊娠妇女分配1周和7周里一氧化碳、二氧化氮、臭氧、二氧化硫的每日最高浓度平均值,以及细颗粒物和粗颗粒物的24 h测量值,采用的方法是在妊娠早期收集这些妇女住所50 km内最接近的空气监测点的测量值。根据不同的污染物,最多4 632例活产对照和3 328例活产、死胎或流产病例有空气污染暴露的数据。应用分层回归模型,并以产妇的人口统计学、烟草和酒精使用情况进行调整。对于多污染物共同暴露的情况,则采用主成分分析来评估这些关联。[结果]二氧化氮暴露与主动脉缩窄及肺动脉瓣狭窄之间存在正性关联。细颗粒物暴露与左室发育不良心脏综合征呈正性相关,但与房间隔缺损呈负性相关。检测个体的暴露周数表明,使用7周的平均水平未观察到污染物与缺陷之间的关联。多污染物分析的结果支持左室流出道阻塞与二氧化氮之间、左室发育不良心脏综合征与颗粒物之间存在关联,尽管在最高的暴露水平时估计值是下降的。[结论]采用每日最高污染物水平探讨个体暴露周数揭示了某些污染物与心脏缺陷之间存在一些正向关联,并且提示在妊娠期间存在潜在的敏感性窗口期。

关键词：先天性心脏缺陷空气污染物出生缺陷预防母亲暴露病例对照研究心脏综合征细颗粒物后代

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A numerical case study on the long-term seismic assessment of reinforced concrete tunnels in corrosive environments

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第3期15卷 551-572页

作者： Maria Antoniou Antonios Mantakas Nikolaos Nikitas Raul fuentes ETH Zurich ZurichSwitzerland National Technical University of Athens AthensGreece University of Leeds LeedsUK RWTH Aachen University AachenGermany

The paper investigates the long-term seismic behaviour of an underground reinforced concrete(RC)metro tunnel in Santiago,Chile,considering the combined effects of chloride-induced corrosion and cumulative,low-amplitude seismic shaking on the structure’s *** soil-tunnel response is evaluated with the aid of transient,nonlinear finite element analysis using a two-dimensional(2D)plane strain numerical model that adopts advanced nonlinear models for the simulation of soil and concrete plasticity and the dynamic stiffness *** effects of corrosion deterioration are demonstrated in terms of time-dependent loss of rebar area and cover concrete stiffness and *** study illustrates the influence of ageing and repeated seismic shaking on lining deformation,crack development,and the modal characteristics of the intact and degrading *** results indicate that multiple lowamplitude events drive the non-degrading RC tunnel beyond its elastic regime without significant structural response consequences.A noticeable impact of corrosion deterioration on the structure’s seismic performance is revealed,increasing with the number and intensity of earthquake *** different tunnel embedment depths are comparatively *** analyses demonstrate larger coseismic section convergence in the case of the deeper tunnel,yet a less pronounced effect of ageing and successive seismic loading compared to the shallow section,which is evident in the RC lining cracks at the end of shaking.

关键词： Tunnels Reinforcement corrosion Ageing Earthquakes Numerical modelling Long-term performance Concrete cracking behaviour

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Meta-analysis of ground movements associated with deep excavations using a data mining approach

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Journal of Rock Mechanics and Geotechnical Engineering 2019年第2期11卷 409-416页

作者： Harry Holmes Emilio Garcia-Taengua Raul fuentes AECOM Ltd. University of Leeds

This paper presents a rigorous statistical approach to identify the controlling factors in the development of ground movements associated with deep excavations. It also gives the most suitable definition of support stiffness from many suggested definitions in the literature. The study is based on a newly compiled database from 389 case studies of propped and anchored excavations. Data mining techniques(e.g. principal component analysis and multi-linear regression) were used to identify significant relationships between the parameters under study and to quantify the global trends in the database. The study shows that the main factors controlling the ground movements are those related to ground conditions, confirming the conclusions of previous empirical studies. It is also shown that the definition of Addenbrooke et al.(1994) is the most suitable expression of support stiffness, therefore providing conclusive evidence for its future use.

关键词： Geomechanics Slope stability Special soil Unsaturated soil

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Assessment of canopy vigor information from kiwifruit plants based on a digital surface model from unmanned aerial vehicle imagery

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International Journal of Agricultural and Biological Engineering 2019年第1期12卷 165-171页

作者： Jinru Xue Yeman Fan Baofeng Su Sigfredo fuentes College of Mechanical and Electronic Engineering Northwest A&F UniversityYangling 712100ShaanxiChina Key Laboratory of Agricultural Internet of Things Ministry of Agriculture and Rural AffairsYangling 712100ShaanxiChina Shaanxi Key Laboratory of Agricultural Information Perception and Intelligent Services Yangling 712100ShaanxiChina School of Agriculture and Food Faculty of Veterinary and Agricultural SciencesUniversity of MelbourneParkville 3010.VictoriaAustralia

Information about canopy vigor and growth are critical to assess the potential impacts of biotic or abiotic stresses on plant *** implementing a Digital Surface Model(DSM)to imagery obtained using Unmanned Aerial Vehicles(UAV),it is possible to filter canopy information effectively based on height,which provides an efficient method to discriminate canopy from soil and lower vegetation such as weeds or cover *** paper describes a method based on the DSM to assess canopy growth(CG)as well as missing plants from a kiwifruit orchard on a plant-by-plant *** DSM was initially extracted from the overlapping RGB aerial imagery acquired over the kiwifruit orchard using the Structure from Motion(SfM)*** adaptive threshold algorithm was implemented using the height difference between soil/lower plants and kiwifruit canopies to identify plants and extract canopy information on a non-regular ***,a customized algorithm was developed to discriminate single kiwifruit plants automatically,which allowed the estimation of individual canopy cover fractions(fc).By applying differential fc thresholding,four categories of the CG were determined automatically:(i)missing plants;(ii)low vigor;(iii)moderate vigor;and(iv)*** were validated by a detailed visual inspection on the ground,which rendered an overall accuracy of 89.5%for the method proposed to assess CG at the plant-by-plant ***,the accuracies for CG category(i)-(iv)were 94.1%,85.1%,86.7%,and 88.0%,*** proposed method showed also to be appropriate to filter out weeds and other smaller non-plant materials which are extremely difficult to be distinguished by common colour thresholding or edge identification methods.

关键词： canopy vigor UAV imagery digital surface model kiwifruit plant missing plants photogrammetry plant stress

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Photoinactivation of Escherichia coli using five photosensitizers and the same number of photons

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Journal of Innovative Optical Health Sciences 2022年第6期15卷 53-67页

作者： Daniel Ortega-Zambrano Denisse fuentes-López Hilda Mercado-Uribe CINVESTAV-Monterrey Parque PIITAutopista al Aeropuerto km.9.5ApodacaNL 66600Mexico

Bacterial resistance is today a matter of great medical concern,so it is urgent to investigate alternatives to alleviate *** inactivation(PDI)is a method that has been endorsed to inactivate diferent pathogens,including bacteria,fungi and *** is achieved by using a photosensitizer(PS)molecule which generates reactive oxygen species under visible or UV *** use visible light and UV-A radiation to excite four commercial PSs(methylene blue,rose bengal,riboflavin and curcumin),and nanopartides synthesized in our *** these PSs having been thoroughly studied in the past by other research groups,in order to compare their effects in an appropriate way,we matched the number of photons they *** found that methylene blue leads to the major inactivation of Escherichia ***,we evaluated the production of singlet axygen and hydroxyl radicals in the photoinactivation process.

关键词： Photodynamic inactivation E.coli ROS photons

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Methods for discovery and characterization of cellulolytic enzymes from insects

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Insect Science 2010年第3期17卷 184-198页

作者： Jonathan D. Willis Cris Oppert Juan L. Jurat-fuentes Department of Entomology and Plant Pathology University of Tennessee Knoxville Tennessee USA

Cellulosic ethanol has been identified as a crucial biofuel resource due to its sustainability and abundance of cellulose feedstocks. However, current methods to obtain glucose from lignocellulosic biomass are ineffective due to recalcitrance of plant biomass. Insects have evolved endogenous and symbiotic enzymes to efficiently use lignocellulosic material as a source of metabolic glucose. Even though traditional biochemical methods have been used to identify and characterize these enzymes, the advancement of genomic and proteomic research tools are expected to allow new insights into insect digestion of cellulose. This information is highly relevant to the design of improved industrial processes ofbiofuel production and to identify potential new targets for development of insecticides. This review describes the diverse methodologies used to detect, quantify, purify, clone and express cellulolytic enzymes from insects, as well as their advantages and limitations.

关键词： biofuels cellulases cellulase discovery methods cellulase substrate insect digestive fluids lignocellulosic biomass

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The Iberian Roma Population Variant Server(IRPVS)

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Journal of Genetics and Genomics 2024年第7期51卷 769-773页

作者： Fabiola Mavillard Javier Perez-Florido Francisco M.Ortuño Amador Valladares Miren L.Álvarez-Villegas Gema Roldán Rosario Carmona Manuel Soriano Santiago Susarte Pilar fuentes Daniel López-López Ana María Nuñez-Negrillo Alejandra Carvajal Yolanda Morgado Daniel Arteaga Rosa Ufano Pablo Mir Juan F.Gamella Joaquín Dopazo Carmen Paradas Macarena Cabrera-Serrano Instituto de Biomedicina de Sevilla(IBiS) Hospital Universitario Virgen del Rocío/CSIC/Universidad de SevillaSevillaSpain Centro Investigación Biomédica en Red Enfermedades Neurodegenerativas(CIBERNED) Instituto de Salud CarlosⅢSevillaSpain Plataforma Andaluza de Medicina Computacional Fundación Progreso y Salud(FPS)Hospital Virgen del RocíoSevillaSpain Grupo de medicina computacional de sistemas Instituto de Biomedicina de Sevilla(IBiS)Hospital Virgen del RocíoSevillaSpain Nodo de Genómica Funcional (INB-ELIXIR-es)Fundación Progreso y Salud(FPS)Hospital Virgen del RocíoSevilla 41013Spain Bioinformática en Enfermedades raras(BiER) Centro de Investigación Biomédica en Red de Enfermedades Raras(CIBERER)Instituto de salud CarlosⅢSevillaSpain Departamento de Ingeniería de Computadores Automática y RobóticaUniversidad de GranadaGranadaSpain Servicio de Urgencias de Atención Primaria Distrito SevillaSevillaSpain Centro de Servicios Sociales Negociado de Servicios EspecializadosAyuntamiento de SevillaSevillaSpain Departamento de Enfermería Facultad de Ciencias de la SaludUniversidad de GranadaGranadaSpain Departamento de Neurología Hospital Virgen de las NievesGranadaSpain Departamento de Neurología Hospital Virgen de ValmeSevillaSpain Centro de Salud Utrera Sur SevillaSpain Centro de Salud Polígono Sur SevillaSpain Unidad de Trastornos del Movimiento Servicio de Neurología y Neurofisiología ClínicaHospital Universitario Virgen del RocíoSevillaSpain Departamento de Medicina Facultad de MedicinaUniversidad de SevillaSevilleSpain Departamento de Antropología Social Universidad de GranadaSpain Unidad Enfermedades Neuromusculares Servicio de Neurología y Neurofisiología ClínicaHospital Universitario Virgen del RocíoSevillaSpain

In recent years,the number of known disease genes has exponentially grown due to the widespread adoption of cost-effective massive parallel *** identify new disease variants,especially in monogenic disorders,a frequen... 详细信息

关键词： Server filtering massive

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New approaches for precise response evaluation in hepatocellular carcinoma

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World Journal of Gastroenterology 2014年第12期20卷 3059-3068页

作者： Koichi Hayano Jorge M fuentes-Orrego Dushyant V Sahani Division of Abdominal Imaging and Intervention Department of RadiologyMassachusetts General Hospital

With the increasing clinical use of cytostatic and novel biologic targeted agents,conventional morphologic tumor burden assessments,including World Health Organization criteria and Response Evaluation Criteria in Solid Tumors,are confronting limitations because of their difficulties in distinguishing viable tumor from necrotic or fibrotic ***,the investigation for reliable quantitative biomarkers of therapeutic response such as metabolic imaging or functional imaging has been *** this review,we will discuss the conventional and new approaches to assess tumor *** targeted therapy or locoregional therapies can induce biological changes much earlier than morphological changes,these functional tumor burden analyses are very ***,some of them have not gone thorough all steps for standardization and ***,these new techniques and criteria will play an important role in the cancer management,and provide each patient more tailored therapy.

关键词： Hepatocellular carcinoma World Health Organization criteria Response Evaluation Criteria in Solid Tumors European Association for the Study of Liver Computed tomography perfusion Dynamic contrast-enhanced-magnetic resonance imaging Diffusion-weighted imaging Positron emission tomography

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Impacts of fire severity and cattle grazing on early plant dynamics in old-growth Araucaria-Nothofagus forests

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Forest Ecosystems 2019年第4期6卷 298-311页

作者： Paola Arroyo-Vargas Andres fuentes-Ramírez Bart Muys Aníbal Pauchard Laboratorio de Biometría Departamento de Ciencias ForestalesUniversidad de La FronteraCasilla 54-DTemucoChile Programa de Magíster en Manejo de Recursos Naturales Facultad de Ciencias Agropecuarias y ForestalesUniversidad de La FronteraCasilla 54-DTemucoChile Butamallin Research Center for Global Change Universidad de La FronteraTemucoChile Instituto de Ecología y Biodiversidad(IEB) SantiagoChile Department of Earth and Environmental Sciences University of LeuvenCelestijnenlaan 200EBox 24113001 LeuvenBelgium Laboratorio de Invasiones Biológicas(LIB) Facultad de Ciencias ForestalesUniversidad de ConcepciónCasilla 160-CConcepciónChile.

Background: Fire has historically shaped the dynamics of Araucaria araucana-Nothofagus pumilio forests in the Andean region of South America. Nevertheless, human disturbances and stronger drought events have resulted in increased occurrence and severity of wildfires. Regardless of their conservation relevance, the initial response to fire of Araucaria-Nothofagus forests has not been well documented. Through this research we tested the hypothesis that plant composition of Araucaria-Nothofagus forest after fire will initially differ in its recovery depending on fire severity, but over time, plant similarity will increase among areas with different levels of fire severity. The study was carried out in old-growth Araucaria-Nothofagus forests in south-central Chile(38°S) that were burned in 2015. We studied vegetation response to three levels of fire severity(low(LS), moderate(MS) and high(HS) severity), also including an adjacent unburned forest(UN), which were assessed one, two and three years after fire. We also evaluated the impact of cattle on plant recovery after fire. We measured species richness, abundance, plant diversity and origin of all vascular plant ***: Species richness and plant abundance responded differently to fire severity. Time-since-fire had a significant effect on plant richness and abundance. Plant composition within LS areas was similar to UN areas, but MS and HS areas were significantly less diverse compared to UN and LS. In absence of other major disturbances, similarity in plant composition tended to increase over time across the different levels of fire severity, becoming more similar to UN. We also found a synergetic effect of cattle and fire on species richness. This interaction promotes the establishment of nonnative species and limits the recovery of native species following ***: Fire severity had a significant impact on the plant community of old-growth Araucaria-Nothofagus forests,especially in areas of high fir

关键词： Fire severity gradient Wildfire Post-fire plant recovery Cattle exclusion Synergistic effects of disturbances Araucaria araucana Nothofagus pumilio

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