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Free and open source software for geospatial applications(FOSS4G)to support Future Earth

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International Journal of Digital Earth 2017年第4期10卷 386-404页

作者： Maria Antonia Brovelli Marco Minghini Rafael Moreno-sanchez ricardo Oliveira Department of Civil and Environmental Engineering Politecnico di MilanoComoItaly Department of Geography and Environmental Sciences University of Colorado DenverDenverCOUSA

The development,integration,and distribution of the information and spatial data infrastructure(*** Earth;DE)necessary to support the vision and goals of Future Earth(FE)will occur in a distributed fashion,in very diverse technological,institutional,socio-cultural,and economic contexts around the *** complex context and ambitious goals require bringing to bear not only the best minds,but also the best science and technologies *** and Open Source Software for Geospatial Applications(FOSS4G)offers mature,capable and reliable software to contribute to the creation of this *** this paper we point to a selected set of some of the most mature and reliable FOSS4G solutions that can be used to develop the functionality required as part of DE and *** provide examples of large-scale,sophisticated,mission-critical applications of each software to illustrate their power and capabilities in systems where they perform roles or functionality similar to the ones they could perform as part of DE and *** provide information and resources to assist the readers in carrying out their own assessments to select the best FOSS4G solutions for their particular contexts and system development needs.

关键词： Open source software geospatial software FOSS4G Future Earth Digital Earth

Systematic exploration of signal-based indicators for failure diagnosis in the context of cyber-physical systems

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Frontiers of Information Technology & Electronic Engineering 2019年第2期20卷 152-175页

作者： Santiago ruiz-ARENAS Zoltán RUSáK Imre HORVáTH ricardo MEJí-GUTIERREZ Faculty of Industrial Design Engineering Delft University of Technology Grupo de Investigación en Ingeniería de Diseno Universidad EAFIT

Malfunction or breakdown of certain mission critical systems(MCSs) may cause losses of life, damage the environments, and/or lead to high costs. Therefore, recognition of emerging failures and preventive maintenance are essential for reliable operation of MCSs. There is a practical approach for identifying and forecasting failures based on the indicators obtained from real life processes. We aim to develop means for performing active failure diagnosis and forecasting based on monitoring statistical changes of generic signal features in the specific operation modes of the system. In this paper, we present a new approach for identifying emerging failures based on their manifestations in system signals. Our approach benefits from the dynamic management of the system operation modes and from simultaneous processing and characterization of multiple heterogeneous signal sources. It improves the reliability of failure diagnosis and forecasting by investigating system performance in various operation modes, includes reasoning about failures and forming of failures using a failure indicator matrix which is composed of statistical deviation of signal characteristics between normal and failed operations, and implements a failure indicator concept that can be used as a plug and play failure diagnosis and failure forecasting feature of cyber-physical systems. We demonstrate that our method can automate failure diagnosis in the MCSs and lend the MCSs to the development of decision support systems for preventive maintenance.

关键词： Failure indicators Failure classification Failure detection and diagnosis Complex systems

Stand-level biomass models for predicting C stock for the main Spanish pine species

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Forest Ecosystems 2021年第2期8卷 387-402页

作者： Ana Aguirre Miren del Río ricardo ruiz-Peinado Sonia Condés Department of Natural Systems and Resources School of Forest Engineering and Natural ResourcesUniversidad Politécnica de MadridMadridSpain INIA Forest Research CenterDepartment of Forest Dynamics and ManagementMadridSpain iuFOR Sustainable Forest Management Research InstituteUniversity of Valladolid and INIAValladolidSpain

Background:National and international institutions periodically demand information on forest indicators that are used for global *** other aspects,the carbon accumulated in the biomass of forest species must be *** this purpose,one of the main sources of data is the National Forest Inventory(NFI),which together with statistical empirical approaches and updating procedures can even allow annual estimates of the requested ***:Stand level biomass models,relating the dry weight of the biomass with the stand volume were developed for the five main pine species in the Iberian Peninsula(Pinus sylvestris,Pinus pinea,Pinus halepensis,Pinus nigra and Pinus pinaster).The dependence of the model on aridity and/or mean tree size was explored,as well as the importance of including the stand form factor to correct model ***,the capability of the models to estimate forest carbon stocks,updated for a given year,was also ***:The strong relationship between stand dry weight biomass and stand volume was modulated by the mean tree size,although the effect varied among the five pine *** humidity,measured using the Martonne aridity index,increased the biomass for a given volume in the cases of Pinus sylvestris,Pinus halepensis and Pinus *** that consider both mean tree size and stand form factor were more accurate and less biased than those that do *** models developed allow carbon stocks in the main Iberian Peninsula pine forests to be estimated at stand level with biases of less than 0.2 Mg·ha^(-1).Conclusions:The results of this study reveal the importance of considering variables related with environmental conditions and stand structure when developing stand dry weight biomass *** described methodology together with the models developed provide a precise tool that can be used for quantifying biomass and carbon stored in the Spanish pine forests in specific years when no field data are available.

关键词： Martonne aridity index Dry weight biomass Carbon stock National Forest Inventory Peninsular pine forest Biomass expansion factor

Machine learning-based zero-touch network and service management:a survey

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Digital Communications and Networks 2022年第2期8卷 105-123页

作者： Jorge Gallego-Madrid Ramon sanchez-Iborra Pedro M.ruiz Antonio F.Skarmeta Department of Information and Communication Engineering University of Murcia30100MurciaSpain Department of Engineering and Applied Techniques University Center of Defense30729San Javier Air Force BaseSpain

The exponential growth of mobile applications and services during the last years has challenged the existing network ***,the arrival of multiple management solutions to cope with this explosion along the end-to-end network chain has increased the complexity in the coordinated orchestration of different segments composing the whole *** Zero-touch Network and Service Management(ZSM)concept has recently emerged to automatically orchestrate and manage network resources while assuring the Quality of Experience(QoE)demanded by *** Learning(ML)is one of the key enabling technologies that many ZSM frameworks are adopting to bring intelligent decision making to the network management *** paper presents a comprehensive survey of the state-of-the-art application of ML-based techniques to improve ZSM *** this end,the main related standardization activities and the aligned international projects and research efforts are deeply *** this dissection,the skyrocketing growth of the ZSM paradigm can be ***,different standardization bodies have already designed reference architectures to set the foundations of novel automatic network management functions and resource *** with these advances,diverse ML techniques are being currently exploited to build further ZSM developments in different aspects,including multi-tenancy management,traffic monitoring,and architecture coordination,among ***,different challenges,such as the complexity,scalability,and security of ML mechanisms,are also identified,and future research guidelines are provided to accomplish a firm development of the ZSM ecosystem.

关键词： Zero-touch network and service management(ZSM) Next generation networks(NGN) Artificial intelligence(AI) Machine learning(ML)

Modelling Thermo-Electro-Mechanical Effects in Orthotropic Cardiac Tissue

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Communications in Computational Physics 2020年第1期27卷 87-115页

作者： ricardo ruiz-Baier Alessio Gizzi Alessandro Loppini Christian Cherubini Simonetta Filippi Mathematical Institute University of OxfordWoodstock RoadOxford OX26GGUnited Kingdom Laboratory of Mathematical Modelling Institute of Personalised MedicineSechenov UniversityMoscowRussian Federation Nonlinear Physics and Mathematical Modeling Department of EngineeringUniversity Campus Bio-Medico of RomeVia A.del Portillo 2100128RomeItaly International Center for Relativistic Astrophysics(ICRA) and ICRANetPiazza delle Repubblica 10I-65122 PescaraItaly

In this paper we introduce a new mathematical model for the active contraction of cardiac muscle,featuring different thermo-electric and nonlinear conductivity *** passive hyperelastic response of the tissue is described by an orthotropic exponential model,whereas the ionic activity dictates active contraction in-corporated through the concept of orthotropic active *** use a fully incompressible formulation,and the generated strain modifies directly the conductivity mechanisms in the medium through the pull-back *** also investigate the influence of thermo-electric effects in the onset of multiphysics emergent spatiotem-poral dynamics,using nonlinear *** turns out that these ingredients have a key role in reproducing pathological chaotic dynamics such as ventricular fibrillation during inflammatory events,for *** specific structure of the governing equations suggests to cast the problem in mixed-primal form and we write it in terms of Kirchhoff stress,displacements,solid pressure,dimensionless electric potential,activation generation,and ionic *** also advance a new mixed-primal finite element method for its numerical approximation,and we use it to explore the properties of the model and to assess the importance of coupling terms,by means of a few computational experiments in 3D.

关键词： Cardiac electromechanics orthotropic active strain thermo-electric coupling scroll wave propagation numerical simulations

Retrieval of Elastic Green’s Tensor near a Cylindrical Inhomogeneity from Vector Correlations

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Communications in Computational Physics 2008年第1期3卷 250-270页

作者： Juan AP´erez-ruiz Francisco Luzon Francisco J.sanchez-Sesma Grupo de Geof´ısica Aplicada Departamento de F´ısica AplicadaUniversidad de Almer´ıaCa˜nada de San Urbano s/n04120-Almer´ıaSpain Departamento de Sismolog´ıa Instituto de IngenieriaUniversidad Nacional Aut´onoma de M´exicoCd.UniversitariaCircuito Escolar s/nCoyoac´an 04510M´exico D.F.Mexico.

Multiple scattering of elastic waves in realistic media makes that averagefield intensities or energy densities follow diffusive processes. In such regime the successiveP to S energy conversions by distributed random inhomogeneities give rise toequipartition which means that in the phase space the available elastic energy is distributedin averagewith equal amounts among the possible states of P and S waves. Insuch diffusive regime the P to S energy ratio equilibrates in an universal way independentof the particular details of the scattering. It has been demonstrated that averagingthe cross correlations at any two points of an elastic medium subjected to diffuse elasticwavefields leads to the emergence of the Green function, which is the wave fieldthat would be observed at one position if an impulsive load is applied at the other. Inthis work we study the problem of the retrieval of the 2D tensor elastodynamic Greenfunction in an infinite elastic space containing a circular cylinder inclusion. We illuminateisotropically the elastic spacewith plane waves. We assume the spectra for both Pand S waves uniform but such that the energy ratio ES/EP=(a/b)2, which is the onepredicted by equipartition theory in two-dimensions. We then show that the Fouriertransform of azimuthal average of the cross-correlation of motion between two pointswithin an elastic medium is proportional to the imaginary part of the exact Green tensorfunction between these points. The numerical results presented here point out thepossibility of detection and imaging of diffractors and resonant diffractors by crosscorrelation even in presence of attenuation exists.

关键词： Multiple scattering elastic waves elastic Green’s tensor

Interpolation of Vector Measures

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Acta Mathematica Sinica,English Series 2011年第1期27卷 119-134页

作者： ricardo del CAMPO Antonio FERNANDEZ Fernando MAYORAL Francisco NARANJO Enrique A. sanchez-PEREZ Dpto. Matemdtica Aplicada I Universidad de SevillaEUITA Ctra. de Utrera Kin. 1 41013 Sevilla Spain Dpto. Matemdtica Aplicada II Universidad de Sevilla Escuela Tdcnica Superior de Ingenieros Camino de los Descubrimientos s/n 41092 Sevilla Spain Instituto Universitario de Matemdtica Pura y Aplicada Universidad Politdcnica de Valencia Camino de Vera s/n 46022 Valencia Spain

Let （Ω, ∑） be a measurable space and mo ： E→ Xo and m1 ： E → X1 be positive vector measures with values in the Banach KSthe function spaces Xo and X1. If 0 〈 a 〈 1, we define a X01-ax1a new vector measure [m0, m]a with values in the Calderdn lattice interpolation space and we analyze the space of integrable functions with respect to measure [m0, m1]a in order to prove suitable extensions of the classical Stein Weiss formulas that hold for the complex interpolation of LP-spaces. Since each p-convex order continuous Kothe function space with weak order unit can be represented as a space of p-integrable functions with respect to a vector measure, we provide in this way a technique to obtain representations of the corresponding complex interpolation spaces. As applications, we provide a Riesz-Thorin theorem for spaces of p-integrable functions with respect to vector measures and a formula for representing the interpolation of the injective tensor product of such spaces.

关键词： Interpolation Banach function space vector measure

Complications of extrahepatic echinococcosis:Fistulization of an adrenal hydatid cyst into the intestine

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World Journal of Gastroenterology 2008年第9期14卷 1467-1469页

作者： Juan Francisco ruiz-Rabelo Manuel Gomez-Alvarez Joaquin sanchez-Rodriguez Sebastian Rufian Pea Department of General Surgery Reina Sofia University Hospital Avda Menendez Pidal S/N Cordoba 14004 Spain

Echinococcal cysts are usually found in liver and lungs, but any other organ can potentially be involved. Extrahepatic disease due to hydatid cyst may develop in the abdominal and pelvic cavity, aside from in other less common locations, which may make both diagnosis and treatment more complex. We present a rare case of extrahepatic echinococcosis in a 70-year old patient with a 4-d history of dull abdominal pain, anemia within the transfusion range and fever. She underwent surgery for left renal hydatid cysts 30 years ago. After non operative treatment, imaging studies showed a calcified hydatid cyst in a retrogastric location communicating with a proximal jejunal loop. En-block resection of the mass together with the adrenal gland was performed including closure of the enteric fistula. Anatomic pathology confirmed the diagnosis of a calcified hydatid cyst of left adrenal origin. Surgery is the treatment of choice and most authors recommend removal of cyst and adrenal gland.

关键词： Echinococcosis Adrenal cyst Surgery

Quantifying water stress effect on daily light use efficiency in Mediterranean ecosystems using satellite data

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International Journal of Digital Earth 2017年第6期10卷 623-638页

作者： Sergio sanchez-ruiz Alvaro Moreno Maria Piles Fabio Maselli Arnaud Carrara Steven Running Maria Amparo Gilabert Departament de Fisica de la Terra i Termodinamica Facultat de FisicaUniversitat de ValenciaBurjassotSpain Numerical Terradynamic Simulation Group University of MontanaMissoulaMTUSA Barcelona Expert Center Institut de Ciencies del MarICM-CSICBarcelonaSpain IBIMET-CNR Sesto FiorentinoItaly Fundacion CEAM PaternaSpain

The capacity of six water stress factors(ε′(i))to track daily light use efficiency(ε)of water-limited ecosystems was *** factors are computed with remote sensing operational products and a limited amount of ground data:ε′1 uses ground precipitation and air temperature,and satellite incoming global solar radiation;ε′(2) uses ground air temperature,and satellite actual evapotranspiration and incoming global solar radiation;ε′_(3) uses satellite actual and potential evapotranspiration;ε′_(4) uses satellite soil moisture;ε′_(5) uses satellite-derived photochemical reflectance index;and ε′_(6) uses ground vapor pressure *** factors were implemented in a production efficiency model based on Monteith’s approach in order to assess their performance for modeling gross primary production(GPP).Estimated GPP was compared to reference GPP from eddy covariance(EC)measurements(GPP EC)in three sites placed in the Iberian Peninsula(two open shrublands and one savanna).ε′_(i) were correlated to ε,which was calculated by dividing GPP EC by ground measured photosynthetically active radiation(PAR)and satellite-derived fraction of absorbed *** results were achieved by ε′(1),ε′(2),ε′(3) and ε′(4) explaining around 40% and 50% of ε variance in open shurblands and savanna,*** terms of GPP,R^(2)≈0.70 were obtained in these cases.

关键词： Light use efficiency water stress GPP Monteith Mediterranean ecosystems