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A Variational Approach to Norm Attainment of Some Operators and Polynomials

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Acta Mathematica Sinica,English Series 2010年第12期26卷 2259-2268页

作者： María D.ACOSTA Jernimo ALAMINOS domingo GARCA Manuel MAESTRE Departamento de Anlisis Matemtico Universidad de Granada Departamento de Anlisis Matemtico Universidad de Valencia

If X is an Asplund space, then every uniformly continuous function on Bx＊ which is holomorphic on the open unit ball, can be perturbed by a w＊ continuous and homogeneous polynomial on X＊ to obtain a norm attaining function on the dual unit ball. This is a consequence of a version of Bourgain-Stegall＇s variational principle. We also show that the set of N-homogeneous polynomials between two Banach spaces X and Y whose transposes attain their norms is dense in the corresponding space of N-homogeneous polynomials. In the case when Y is the space of Radon measures on a compact K, this result can be strengthened.

关键词： Banach space variational principle operator polynomial holomorphic function

Macrofaunal communities of threatened subtidal maёrl seabeds on Tenerife (Canary Islands, north-east Atlantic Ocean) in summer

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Acta Oceanologica Sinica 2012年第1期31卷 98-105页

作者： Rodrigo Riera Juan domingo Delgado Myriam Rodríguez Óscar Monterroso Eva Ramos Centro de Investigaciones Medioambientales del Atlántico(CIMA SL) C/Arzobispo Elías Yanes Área de Ecología Departamento de Sistemas FísicosQuímicos y Naturales.Facultad de Ciencias ExperimentalesUniversidad Pablo de Olavide

This study contributes with the first data on physical and taxonomical structure of macrofaunal assemblages of maerl beds from the Canary Islands. Maerl beds and Cymodocea nodosa meadows of the Canary Islands are considered biodiversity hot-spots in terms of taxonomic and functional biodiversity with a broad geographical and depth ranges. The authors have studied the structure of the macrofaunal assemblages on different habitat types （Cymodocea, Caulerpa, sabellid field, garden eel and maerl beds）. Samples were taken at a range of depths between 14 and 46 m. Correlations were performed among abiotic variables （granulometry, organic matter, nitrogen and phosphates） and the most abundant taxa. Similarity analysis was performed to explore the patchiness of seabeds at a local scale. Significant differences were found in macrofaunal assemblages among seabed types, with highest abundances and lowest biodiversity in sabellid fields, where the sabellid Bispira viola dominated. The polychaetes Aponuphis bilineata and Chone filicauda and the mollusc Turritella brochii were the most abundant taxa on maerl beds. The mosaic of granulometric conditions would explain the associated macroinfaunal community structure and contribute to the creation of diversity on these relatively well preserved seabeds at a local scale.

关键词： Macrofauna Polychaetes Amphipods Molluscs soft-bottoms subtidal Tenerife Canary Islands

Machine learning for integrating combustion chemistry in numerical simulations

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能源与人工智能(英文) 2021年第3期5卷 330-338页

作者： Huu-Tri Nguyen Pascale domingo Luc Vervisch Phuc-Danh Nguyen CORIA-CNRS Normandie UniversitéINSA Rouen NormandieSaint-Etienne-du-Rouvray 76801France ArcelorMittal Global Research and Development Maiziéres-lés-Metz 57280France

A strategy based on machine learning is discussed to close the gap between the detailed description of combustion chemistry and the numerical simulation of combustion ***,the partial differential equations describ-ing chemical kinetics are stiffand involve many degrees of freedom,making their solving in three-dimensional unsteady simulations very *** is discussed in this work how a reduction of the computing cost by an order of magnitude can be achieved using a set of neural networks trained for solving *** ther-mochemical database used for training is composed of time evolutions of stochastic particles carrying chemical species mass fractions and temperature according to a turbulent micro-mixing problem coupled with complex *** novelty of the work lies in the decomposition of the thermochemical hyperspace into clusters to facilitate the training of neural *** decomposition is performed with the Kmeans algorithm,a local principal component analysis is then applied to every *** new methodology for combustion chemistry reduction is tested under conditions representative of a non-premixed syngas oxy-flame.

关键词： Combustion chemistry Micro-mixing modeling Principal component analysis Artificial neural network Chemistry reduction

A practical approach with drones,smartphones,and tracking tags for potential real-time animal tracking

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Current Zoology 2023年第2期69卷 208-214页

作者： Geison P Mesquita Margarita Mulero-Pazmany Serge A Wich Jose domingo Rodriguez-Teijeiro Department of Animal Biology Plant Biology and EcologyAutonomous University of Barcelona08193Cerdanyola del VallesBarcelonaSpain Instituto Baguacu de Pesquisa em Biodiversidade(IBPBio) 65050849Sao LuisMaranhaoBrazil Grupo de Biogeografia Diversidad y ConservacionDepartamento de Biologia AnimalFacultad de CienciasUniversidad de MalagaBlvr.Louis Pasteur3129010MalagaSpain School of Biological and Environmental Sciences Liverpool John Moores UniversityLiverpool L35UGUK Department of Evolutionary Biology Ecology and Environmental SciencesFaculty of BiologyUniversity of Barcelona08028BarcelonaSpain Biodiversity Research Institute(IRBio) University of BarcelonaBarcelona08193Spain

Drones are increasingly used for fauna monitoring and wildlife tracking;however,their application for wildlife tracking is restricted by developing such *** we explore the potential of drones for wildlife tracking using an off-the-shelf system that is easy to use by non-specialists consisting of a multirotor drone,smartphones,and commercial tracking devices via Bluetooth and Ultra-Wide Band(UWB).We present the system configuration,explore the operational parameters that can affect detection capabilities,and test the effectiveness of the system for locating targets by simulating target animals in savanna and forest *** self-contained tracking system was built without hardware or software *** 40 tracking flights carried out in the Brazilian Cerrado,we obtained a detection rate of 90%in savanna and 40%in forest *** for targets in movement(N=20),the detection rates were 90%in the savanna and 30%in the forest *** spatial accuracy obtained by the system was 14.61 m,being significantly more accurate in savanna(x=10.53)than in forest areas(x=13.06).This approach to wildlife tracking facilitates the use of drones by non-specialists at an affordable cost for conservation projects with limited *** reduced size of the tags,the long battery life,and the iower cost compared to GPS-tags open up a range of opportunities for animal tracking.

关键词： conservation drone small surveys wildlife tracking

The USLE soil erodibility nomograph revisited

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International Soil and Water Conservation Research 2023年第1期11卷 1-13页

作者： Eva Corral-Pazos-de-Provens ígor Rapp-Arraras Juan M.domingo-Santos School of Engineering University of HuelvaE-21007 HuelvaSpain

The nomograph by Wischmeier et al.(1971)for calculating the K-factor in the USLE was extremely useful when there was low access to ***,the generalised calculation of this factor requires the development of analytic *** paper presents a detailed analysis of the nomograph and its underlying equation,which is applicable only when the silt plus very find sand fraction does not exceed 70%.We also examined the quality of fit on the nomograph of the adaptations to the equation that have been proposed,as a means of dealing with those areas where the original equation is not *** models are shown to have areas where the fit is deficient or even ***,the family of curves on the nomograph for the various values taken by the organic matter are not coincident with the mathematical function from which they presumably *** study also identifies those areas of the textural triangle in which the soils originally used in developing the USLE are located,with a view to according a lower predictive value to the contrasting areas in which calculations of the K-factor will necessarily be ***,a new equation for calculating the K-factor is presented,which accurately reproduces the different sections of the nomograph,and allows the poorly functioning graph to be dispensed *** paper ends with a link to a tool in R for simplifying the procedure for calculating the K-factor,taking into account varying situations of data availability.

关键词： K-factor RUSLE Soil texture Organic matter Very find sand Soil loss prediction

Management of biliary complications after orthotopic liver transplantation:The role of endoscopy

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World Journal of Gastroenterology 2008年第4期14卷 493-497页

作者： Maria C Londoo domingo Balderramo Andrés Cárdenas GI Unit Institut de Malalties Digestives i MetaboliquesUniversity of BarcelonaHospital ClínicBarcelona 08036Spain

Biliary complications are signifi cant causes of morbidity and mortality after orthotopic liver transplantation (OLT). The estimated incidence of biliary complications after OLT ranges between 10%-25%,however,these numbers continue to decline due to improvement in surgical techniques. The most common biliary complications are strictures (both anastomotic and non-anastomotic) and bile leaks. Most of these problems can be appropriately managed with endoscopic retrograde colangiography (ERC). Other complications such as bile duct stones,bile casts,sphincter of Oddi dysfunction,and hemobilia,are less frequent and also can be managed with ERC. This article will review the risk factors,diagnosis,and endoscopic management of the most common biliary complications after OLT.

关键词： Encoscopic retrograde cholangiopancreatography Orthotopic liver transplantation Biliarystrictures Bile leaks

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npj Computational Materials 2021年第1期7卷 1474-1480页

作者： Iaroslav Gaponenko Loïc Musy Neus domingo Nicolas Stucki Albert Verdaguer Nazanin Bassiri-Gharb Patrycja Paruch Department of Quantum Matter Physics University of GenevaGenevaSwitzerland G.W.Woodruff School of Mechanical Engineering Georgia Institute of TechnologyAtlantaGAUSA Catalan Institute of Nanoscience and Nanotechnology(ICN2) CSIC and BISTCampus UABBarcelonaSpain University of Applied Sciences and Arts Western Switzerland(HES-SO/HEPIA) GenevaSwitzerland Institut de Ciència de Materials de Barcelona(ICMAB) CSICCampus UABBarcelonaSpain School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGAUSA

Electrochemical phenomena in ferroelectrics are of particular interest for catalysis and sensing applications,with recent studies highlighting the combined role of the ferroelectric polarisation,applied surface voltage and overall switching ***,we present a systematic Kelvin probe microscopy study of the effect of relative humidity and polarisation switching history on the surface charge dissipation in ferroelectric Pb(Zr_(0.2)Ti_(0.8))O_(3)thin *** analyse the interaction of surface charges with ferroelectric domains through the framework of physically constrained unsupervised machine learning matrix factorisation,Dictionary Learning,and reveal a complex interplay of voltage-mediated physical processes underlying the observed signal *** insight into the observed behaviours is given by a Fitzhugh–Nagumo reaction–diffusion model,highlighting the lateral spread and charge passivation process contributors within the Dictionary Learning analysis.

关键词： ferroelectric charge film

Maintenance and Quality Control in Mechanical Equipment in Marathon Equatorial Guinea Production Limited（MEGPL）

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Maintenance and Quality Control in Mechanical Equipment in M...

作者： Onoberto domingo NGUERE ALO ASUSOGO 湖南大学

学位级别：硕士

对于像马拉松赤道几内亚生产有限公司这样的机器依赖型公司而言、每次停机都是组织的巨大成本。维护和质量控制正在控制工业园区内的每台机器、包括陆上和海上作业区。一个主要因素是快速响应以克服机器故障、这就是纠正性维护。其目的... 详细信息

对于像马拉松赤道几内亚生产有限公司这样的机器依赖型公司而言、每次停机都是组织的巨大成本。维护和质量控制正在控制工业园区内的每台机器、包括陆上和海上作业区。一个主要因素是快速响应以克服机器故障、这就是纠正性维护。其目的是改进在马拉松赤道几内亚生产有限公司实施的维护和质量控制系统。这一论文是作为公司的一个案例研究,为了选择研究机械设备的维修和质量控制技术,实施了系统该系统随后与收集的信息、观察、会议和访谈一起使用,以评估如何在马拉松赤道几内亚生产有限公司进行维护和质量控制。鉴于这些成果,制定了以下具体改进领域:资源安排、强有力的通信系统和目标设定。此外,还为赤道几内亚马拉松生产有限公司在特定领域采取了许多明确规定的措施。在采取措施的机会不大的情况下,马拉松赤道几内亚生产有限公司的维护和质量控制将越来越熟练,机器故障或停机总数将减少。在马拉松赤道几内亚生产有限公司、持续改进是身份的一部分.随着持续改进的渴望、这将研究控制和预测机械设备维护和质量控制的统计方法、以更好地改进其性能.这种系统很可能通过植入预防性维护来防止机器发生故障、并且符合高质量标准因此,人们认为,可获得的信息具有很大的潜力,可以利用不同的维护和质量控制系统,以便从业务中获得更好的知识,并显示出解决改进问题的方向,指导根据事实作出决定。

关键词：维护和质量控制系统维护类型设备/机器故障系统 MQC的重要因素机器改进机械设备的植入系统机器的质量控制因素机器执行系统

Impact of Adrenaline or Cortisol Injection on Meat Quality Development of Merino Hoggets

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Journal of Integrative Agriculture 2013年第11期12卷 1931-1936页

作者： Dario G Pighin Sebastian A Cunzolo Maria Zimerman Adriana A Pazos Ernesto domingo Anibal J Pordomingo Gabriela Grigioni Institute of Food Technology National Institute of Agricultural Technology(INTA)De Los Reseros y Las CabaasMorón 1708Argentina National Council of Scientific and Technological Research-CONICET Av.Rivadavia 1917Buenos Aires 1033Argentina Faculty of Agricultural and Food Sciences University of Moron Experimental Station-INTA Bariloche Modesta Victoria 4450San Carlos de Bariloche Río Negro 8400Argentina Institute of Food Technology National Institute of Agricultural Technology(INTA)De Los Reseros y Las Caba asMorón 1708Argentina Experimental Station-INTA Anguil Ruta Nacional No 5 Km.580(6326)La Pampa 6326Argentina

Increased levels of stress hormones in the muscle could lead to post mortem metabolic/structural modiifcations that could be relfected on meat quality. The present study investigated the metabolic effect of either adrenaline or cortisol injected into lambs in order to obtain an animal model of acute stress. Results showed that adrenaline or cortisol injection lead to glucose metabolism and muscle temperature increase. Muscle pH immediately post mortem was affected by adrenaline treatment. Water holding capacity （WHC） of fresh muscle, ifnal muscle pH and temperature registered at 24 h post mortem were not affected by injected hormones. Hardness and adhesiveness of LD muscle evaluated 3 d post mortem tended to increase as a result of adrenaline or cortisol injection. Results demonstrated that injected hormones were able to affect the post mortem muscle biochemistry and the pH/T curve independently of ifnal muscle pH.

关键词： stress hormones muscle metabolism meat quality