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Author During, G.; Josserand, C.; Rica, S. pdf  doi
openurl 
  Title Wave turbulence theory of elastic plates Type Journal Article
  Year 2017 Publication Physica D-Nonlinear Phenomena Abbreviated Journal Physica D  
  Volume 347 Issue Pages 42-73  
  Keywords Wave turbulence; Elastic plates; Kinetic equation; Numerical simulations  
  Abstract This article presents the complete study of the long-time evolution of random waves of a vibrating thin elastic plate in the limit of small plate deformation so that modes of oscillations interact weakly. According to the wave turbulence theory a nonlinear wave system evolves in longtime creating a slow redistribution of the spectral energy from one mode to another. We derive step by step, following the method of cumulants expansion and multiscale asymptotic perturbations, the kinetic equation for the second order cumulants as well as the second and fourth order renormalization of the dispersion relation of the waves. We characterize the non-equilibrium evolution to an equilibrium wave spectrum, which happens to be the well known Rayleigh-Jeans distribution. Moreover we show the existence of an energy cascade, often called the Kolmogorov-Zakharov spectrum, which happens to be not simply a power law, but a logarithmic correction to the Rayleigh Jeans distribution. We perform numerical simulations confirming these scenarii, namely the equilibrium relaxation for closed systems and the existence of an energy cascade wave spectrum. Both show a good agreement between theoretical predictions and numerics. We show also some other relevant features of vibrating elastic plates, such as the existence of a self-similar wave action inverse cascade which happens to blow-up in finite time. We discuss the mechanism of the wave breakdown phenomena in elastic plates as well as the limit of strong turbulence which arises as the thickness of the plate vanishes. Finally, we discuss the role of dissipation and the connection with experiments, and the generalization of the wave turbulence theory to elastic shells. (C) 2017 Elsevier B.V. All rights reserved.  
  Address [During, Gustavo] Pontificia Univ Catolica Chile, Fac Fis, Casilla 306, Santiago, Chile, Email: christophe.josserand@upmc.fr  
  Corporate Author Thesis  
  Publisher Elsevier Science Bv Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0167-2789 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000399856000004 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 728  
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Author Efraimidis, I.; Gaona, J.; Hernandez, R.; Venegas, O. pdf  doi
openurl 
  Title On harmonic Bloch-type mappings Type Journal Article
  Year 2017 Publication Complex Variables And Elliptic Equations Abbreviated Journal Complex Var. Elliptic Equ.  
  Volume 62 Issue 8 Pages 1081-1092  
  Keywords Bloch functions; harmonic functions; Jacobian; univalent functions; schlicht radius; growth estimates; coefficient estimates; 30C25; 30C50; 30D45; 30H30  
  Abstract Let f be a complex-valued harmonicmapping defined in the unit disk D. We introduce the following notion: we say that f is a Bloch-type function if its Jacobian satisfies This gives rise to a new class of functions which generalizes and contains the well-known analytic Bloch space. We give estimates for the schlicht radius, the growth and the coefficients of functions in this class. We establish an analogue of the theorem which, roughly speaking, states that for. analytic log. is Bloch if and only if. is univalent.  
  Address [Efraimidis, I.] Univ Autonoma Madrid, Dept Matemat, Madrid, Spain, Email: iason.efraimidis@uam.es  
  Corporate Author Thesis  
  Publisher Taylor & Francis Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1747-6933 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000399938900004 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 729  
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Author Ekman, R.; Asenjo, F.A.; Zamanian, J. pdf  doi
openurl 
  Title Relativistic kinetic equation for spin-1/2 particles in the long-scale-length approximation Type Journal Article
  Year 2017 Publication Physical Review E Abbreviated Journal Phys. Rev. E  
  Volume 96 Issue 2 Pages 8 pp  
  Keywords  
  Abstract In this paper, we derive a fully relativistic kinetic theory for spin-1/2 particles and its coupling to Maxwell's equations, valid in the long-scale-length limit, where the fields vary on a scale much longer than the localization of the particles; we work to first order in (h) over bar. Our starting point is a Foldy-Wouthuysen (FW) transformation, applicable to this regime, of the Dirac Hamiltonian. We derive the corresponding evolution equation for the Wigner quasidistribution in an external electromagnetic field. Using a Lagrangian method we find expressions for the charge and current densities, expressed as free and bound parts. It is furthermore found that the velocity is nontrivially related to the momentum variable, with the difference depending on the spin and the external electromagnetic fields. This fact that has previously been discussed as “hidden momentum” and is due to that the FW transformation maps pointlike particles to particle clouds for which the prescription of minimal coupling is incorrect, as they have multipole moments. We express energy and momentum conservation for the system of particles and the electromagnetic field, and discuss our results in the context of the Abraham-Minkowski dilemma.  
  Address [Ekman, R.; Zamanian, J.] Umea Univ, Dept Phys, SE-90187 Umea, Sweden  
  Corporate Author Thesis  
  Publisher Amer Physical Soc Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2470-0045 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000408118100012 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 759  
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Author Farhan, A.; Petersen, C.F.; Dhuey, S.; Anghinolfi, L.; Qin, Q.H.; Saccone, M.; Velten, S.; Wuth, C.; Gliga, S.; Mellado, P.; Alava, M.J.; Scholl, A.; van Dijken, S. pdf  doi
openurl 
  Title Nanoscale control of competing interactions and geometrical frustration in a dipolar trident lattice Type Journal Article
  Year 2017 Publication Nature Communications Abbreviated Journal Nat. Commun.  
  Volume 8 Issue Pages 7 pp  
  Keywords  
  Abstract Geometrical frustration occurs when entities in a system, subject to given lattice constraints, are hindered to simultaneously minimize their local interactions. In magnetism, systems incorporating geometrical frustration are fascinating, as their behavior is not only hard to predict, but also leads to the emergence of exotic states of matter. Here, we provide a first look into an artificial frustrated system, the dipolar trident lattice, where the balance of competing interactions between nearest-neighbor magnetic moments can be directly controlled, thus allowing versatile tuning of geometrical frustration and manipulation of ground state configurations. Our findings not only provide the basis for future studies on the low-temperature physics of the dipolar trident lattice, but also demonstrate how this frustration-by-design concept can deliver magnetically frustrated metamaterials.  
  Address [Farhan, Alan; Scholl, Andreas] LBNL, Adv Light Source, 1 Cyclotron Rd, Berkeley, CA 94720 USA, Email: alan.farhan@gmx.net  
  Corporate Author Thesis  
  Publisher Nature Publishing Group Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2041-1723 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000413118700001 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 802  
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Author Ferrada-Salas, A.; Hernandez, R.; Martin, M.J. pdf  doi
openurl 
  Title On Convex Combinations Of Convex Harmonic Mappings Type Journal Article
  Year 2017 Publication Bulletin Of The Australian Mathematical Society Abbreviated Journal Bull. Aust. Math. Soc.  
  Volume 96 Issue 2 Pages 256-262  
  Keywords convex harmonic mappings; convex combinations  
  Abstract The family F-lambda of orientation-preserving harmonic functions f = h + (g) over bar in the unit disc D (normalised in the standard way) satisfying h' (z) + g' (z) = 1/(1 + lambda z)(1 + (lambda) over barz), z is an element of D, for some lambda is an element of partial derivative D, along with their rotations, play an important role among those functions that are harmonic and orientation-preserving and map the unit disc onto a convex domain. The main theorem in this paper generalises results in recent literature by showing that convex combinations of functions in F-lambda are convex.  
  Address [Ferrada-Salas, Alvaro] Pontificia Univ Catolica Chile, Fac Matemat, Casilla 306, Santiago, Chile, Email: alferrada@mat.puc.cl;  
  Corporate Author Thesis  
  Publisher Cambridge Univ Press Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0004-9727 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000411403100010 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 804  
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Author Fierro, R.; Leiva, V. pdf  doi
openurl 
  Title A stochastic methodology for risk assessment of a large earthquake when a long time has elapsed Type Journal Article
  Year 2017 Publication Stochastic Environmental Research And Risk Assessment Abbreviated Journal Stoch. Environ. Res. Risk Assess.  
  Volume 31 Issue 9 Pages 2327-2336  
  Keywords Earthquake data analysis; Exponential and gamma distributions; Maximum-likelihood method; Monte Carlo simulation; Nonhomogeneous Poisson process  
  Abstract We propose a stochastic methodology for risk assessment of a large earthquake when a long time has elapsed from the last large seismic event. We state an approximate probability distribution for the occurrence time of the next large earthquake, by knowing that the last large seismic event occurred a long time ago. We prove that, under reasonable conditions, such a distribution is exponential with a rate depending on the asymptotic slope of the cumulative intensity function corresponding to a nonhomogeneous Poisson process. As it is not possible to obtain an empirical cumulative distribution function of the waiting time for the next large earthquake, an estimator of its cumulative distribution function based on existing data is derived. We conduct a simulation study for detecting scenario in which the proposed methodology would perform well. Finally, a real-world data analysis is carried out to illustrate its potential applications, including a homogeneity test for the times between earthquakes.  
  Address [Fierro, Raul] Univ Valparaiso, Inst Matemat, Valparaiso, Chile, Email: victorleivasanchez@gmail.com  
  Corporate Author Thesis  
  Publisher Springer Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1436-3240 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000414782800011 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 796  
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Author Filker, S.; Forster, D.; Weinisch, L.; Mora-Ruiz, M.; Gonzalez, B.; Farias, M.E.; Rossello-Mora, R.; Stoeck, T. pdf  doi
openurl 
  Title Transition boundaries for protistan species turnover in hypersaline waters of different biogeographic regions Type Journal Article
  Year 2017 Publication Environmental Microbiology Abbreviated Journal Environ. Microbiol.  
  Volume 19 Issue 8 Pages 3186-3200  
  Keywords  
  Abstract The identification of environmental barriers which govern species distribution is a fundamental concern in ecology. Even though salt was previously identified as a major transition boundary for micro- and macroorganisms alike, the salinities causing species turnover in protistan communities are unknown. We investigated 4.5 million high-quality protistan metabarcodes (V4 region of the SSU rDNA) obtained from 24 shallow salt ponds (salinities 4%-44%) from South America and Europe. Statistical analyses of protistan community profiles identified four salinity classes, which strongly selected for different protistan communities: 4-9%, 14-24%, 27-36% and 38-44%. The proportion of organisms unknown to science is highest in the 14-24% salinity class, showing that environments within this salinity range are an unappreciated reservoir of as yet undiscovered organisms. Distinct higher-rank taxon groups dominated in the four salinity classes in terms of diversity. As increasing salinities require different cellular responses to cope with salt, our results suggest that different evolutionary lineages of protists have evolved distinct haloadaptation strategies. Salinity appears to be a stronger selection factor for the structuring of protistan communities than geography. Yet, we find a higher degree of endemism in shallow salt ponds compared with less isolated ecosystems such as the open ocean. Thus, rules for biogeographic structuring of protistan communities are not universal, but depend on the ecosystem under consideration.  
  Address [Filker, Sabine] Univ Kaiserslautern, Dept Mol Ecol, D-67663 Kaiserslautern, Germany, Email: stoeck@rhrk.uni-kl.de  
  Corporate Author Thesis  
  Publisher Wiley Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1462-2912 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000407790700021 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 761  
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Author Garcia, J.; Pope, C.; Altimiras, F. pdf  doi
openurl 
  Title A Distributed K-Means Segmentation Algorithm Applied to Lobesia botrana Recognition Type Journal Article
  Year 2017 Publication Complexity Abbreviated Journal Complexity  
  Volume Issue Pages 14 pp  
  Keywords  
  Abstract Early detection of Lobesia botrana is a primary issue for a proper control of this insect considered as the major pest in grapevine. In this article, we propose a novel method for L. botrana recognition using image data mining based on clustering segmentation with descriptors which consider gray scale values and gradient in each segment. This system allows a 95 percent of L. botrana recognition in non-fully controlled lighting, zoom, and orientation environments. Our image capture application is currently implemented in a mobile application and subsequent segmentation processing is done in the cloud.  
  Address [Garcia, Jose; Pope, Christopher; Altimiras, Francisco] Telefon Invest & Desarrollo, Santiago, Chile, Email: joseantonio.garcia@telefonica.com  
  Corporate Author Thesis  
  Publisher Wiley-Hindawi Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1076-2787 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000407198000001 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 754  
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Author Garcia-Papani, F.; Uribe-Opazo, M.A.; Leiva, V.; Aykroyd, R.G. pdf  doi
openurl 
  Title Birnbaum-Saunders spatial modelling and diagnostics applied to agricultural engineering data Type Journal Article
  Year 2017 Publication Stochastic Environmental Research And Risk Assessment Abbreviated Journal Stoch. Environ. Res. Risk Assess.  
  Volume 31 Issue 1 Pages 105-124  
  Keywords Asymmetric distributions; Local influence; Matern model; Maximum likelihood methods; Monte Carlo simulation; Non-normality; R software; Spatial data analysis  
  Abstract Applications of statistical models to describe spatial dependence in geo-referenced data are widespread across many disciplines including the environmental sciences. Most of these applications assume that the data follow a Gaussian distribution. However, in many of them the normality assumption, and even a more general assumption of symmetry, are not appropriate. In non-spatial applications, where the data are uni-modal and positively skewed, the Birnbaum-Saunders (BS) distribution has excelled. This paper proposes a spatial log-linear model based on the BS distribution. Model parameters are estimated using the maximum likelihood method. Local influence diagnostics are derived to assess the sensitivity of the estimators to perturbations in the response variable. As illustration, the proposed model and its diagnostics are used to analyse a real-world agricultural data set, where the spatial variability of phosphorus concentration in the soil is considered-which is extremely important for agricultural management.  
  Address [Garcia-Papani, Fabiana; Uribe-Opazo, Miguel Angel] Univ Estadual Oeste Parana, Postgrad Program Agr Engn, Ctr Exact Sci & Technol, Cascavel, PR, Brazil, Email: fgarciapapani@gmail.com;  
  Corporate Author Thesis  
  Publisher Springer Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1436-3240 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000394278600008 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 704  
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Author Garmendia, M.L.; Mondschein, S.; Matus, O.; Murrugarra, R.; Uauy, R. pdf  doi
openurl 
  Title Predictors of gestational weight gain among Chilean pregnant women: The Chilean Maternal and Infant Nutrition Cohort study Type Journal Article
  Year 2017 Publication Health Care For Women International Abbreviated Journal Health Care Women Int.  
  Volume 38 Issue 8 Pages 892-904  
  Keywords  
  Abstract We identified factors associated with gestational weight gain (GWG) in 1,654 Chilean pregnant women with full-term pregnancies. At baseline, we collected information about sociodemographic, gyneco-obstetric, anthropometric, and health-care-related factors. We found that prepregnancy nutritional body mass index was the most important factor related to GWG above recommendations (overweight: ratio of relative risks [RRR] = 2.31, 95% confidence interval [CI, 1.73, 3.09] and obesity: RRR = 2.90, 95% CI [2.08, 4.03]). We believe that women who are overweight/obese at the beginning of pregnancy should be identified because of their higher risk, and that adequate strategies should be designed and implemented to help them achieve a healthy GWG.  
  Address [Luisa Garmendia, Maria; Uauy, Ricardo] Univ Chile, Inst Nutr & Food Technol, Libano 5524, Santiago, Chile, Email: mgarmendia@inta.uchile.cl  
  Corporate Author Thesis  
  Publisher Taylor & Francis Inc Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0739-9332 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000407518400009 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 758  
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Author Gonzalez-Olivares, E.; Gonzalez-Yanez, B.; Becerra-Klix, R.; Ramos-Jiliberto, R. pdf  doi
openurl 
  Title Multiple stable states in a model based on predator-induced defenses Type Journal Article
  Year 2017 Publication Ecological Complexity Abbreviated Journal Ecol. Complex.  
  Volume 32 Issue Pages 111-120  
  Keywords Predator prey theory; Inducible defenses; Refuges; Stability; Separatrix  
  Abstract A large variety of antipredator defenses are exhibited by plants, animals and microbes in nature. A deep understanding of the dynamic consequences of prey responses to predation risk is essential for building a comprehensive theory of food webs. Here we present a simple classification of prey defenses based on the sensitivity of prey immunity to predation respect to abundances of prey and predators. Only three out of six defense types have been analytically studied in the context of predator-prey dynamics, which reveals a serious gap in our current knowledge of ecological interactions. In this study we present a mathematical analysis on a widely occurring type of prey defense whose behavior has not been established in exact terms. The study model considers prey whose average immunity to predators is enhanced by predator abundance. This case, known as inducible defenses, has been reported for a wide array of species. Our results reveal a rich dynamic behavior, in which the predator-prey system exhibits either one, two or three positive equilibrium points, with up to two attractors. Thus, inducible defenses constitute a mechanism that could drive alternative stable states even in very simple food web models. (C) 2017 Elsevier B.V. All rights reserved.  
  Address [Gonzalez-Olivares, Eduardo; Gonzalez-Yanez, Betsabe] Pontificia Univ Catolica Valparaiso, Av Brasil 2950, Valparaiso, Chile, Email: ejgonzal@ucv.cl;  
  Corporate Author Thesis  
  Publisher Elsevier Science Bv Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1476-945x ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000418989900009 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 825  
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Author Henriquez, P.A.; Ruz, G.A. pdf  doi
openurl 
  Title Extreme learning machine with a deterministic assignment of hidden weights in two parallel layers Type Journal Article
  Year 2017 Publication Neurocomputing Abbreviated Journal Neurocomputing  
  Volume 226 Issue Pages 109-116  
  Keywords Extreme learning machine; Low-discrepancy points; Parallel layers; Regression; Classification  
  Abstract Extreme learning machine (ELM) is a machine learning technique based on competitive single-hidden layer feedforward neural network (SLFN). However, traclitional ELM and its variants are only based on random assignment of hidden weights using a uniform distribution, and then the calculation of the weights output using the least-squares method. This paper proposes a new architecture based on a non-linear layer in parallel by another non-linear layer and with entries of independent weights. We explore the use of a deterministic assignment of the hidden weight values using low-discrepancy sequences (LDSs). The simulations are performed with Halton and Sobol sequences. The results for regression and classification problems confirm the advantages of using the proposed method called PL-ELM algorithm with the deterministic assignment of hidden weights. Moreover, the PL-ELM algorithm with the deterministic generation using LDSs can be extended to other modified ELM algorithms.  
  Address [Henriquez, Pablo A.; Ruz, Gonzalo A.] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Ave Diagonal Las Torres 2640, Santiago, Chile, Email: pabhenriquez@alumnos.uai.cl;  
  Corporate Author Thesis  
  Publisher Elsevier Science Bv Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0925-2312 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000392037800012 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 687  
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Author Hojman, S.A.; Asenjo, F.A. pdf  doi
openurl 
  Title Spinning particles coupled to gravity and the validity of the universality of free fall Type Journal Article
  Year 2017 Publication Classical And Quantum Gravity Abbreviated Journal Class. Quantum Gravity  
  Volume 34 Issue 11 Pages 8 pp  
  Keywords spin-gravity coupling; spinning massive particle; Lagrangian description  
  Abstract Recent experimental work has determined that free falling Rb-87 atoms on Earth, with vertically aligned spins, follow geodesics, thus apparently ruling out spin-gravitation interactions. It is showed that while some spinning matter models coupled to gravitation referenced to in that work seem to be ruled out by the experiment, those same experimental results confirm theoretical results derived from a Lagrangian description of spinning particles coupled to gravity constructed over forty years ago. A proposal to carry out (similar but) different experiments which will help to test the validity of the universality of free fall as opposed to the correctness of the aforementioned Lagrangian theory, is presented.  
  Address [Hojman, Sergio A.] Univ Adolfo Ibanez, Fac Artes Liberales, Dept Ciencias, Santiago, Chile, Email: sergio.hojman@uai.cl;  
  Corporate Author Thesis  
  Publisher Iop Publishing Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0264-9381 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000402399700011 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 735  
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Author Jungles, M.K.; Val del Rio, A.; Mosquera-Corral, A.; Campos, J.L.; Mendez, R.; Costa, R.H.R. pdf  doi
openurl 
  Title Effects of Inoculum Type and Aeration Flowrate on the Performance of Aerobic Granular SBRs Type Journal Article
  Year 2017 Publication Processes Abbreviated Journal Processes  
  Volume 5 Issue 3 Pages 10 pp  
  Keywords aeration flowrate; aerobic granules; inoculum; sequencing batch reactor; wastewater  
  Abstract Aerobic granular sequencing batch reactors (SBRs) are usually inoculated with activated sludge which implies sometimes long start-up periods and high solids concentrations in the effluent due to the initial wash-out of the inoculum. In this work, the use of aerobic mature granules as inoculum in order to improve the start-up period was tested, but no clear differences were observed compared to a reactor inoculated with activated sludge. The effect of the aeration rate on both physical properties of granules and reactor performance was also studied in a stable aerobic granular SBR. The increase of the aeration flow rate caused the decrease of the average diameter of the granules. This fact enhanced the COD and ammonia consumption rates due to the increase of the DO level and the aerobic fraction of the biomass. However, it provoked a loss of the nitrogen removal efficiency due to the worsening of the denitrification capacity as a consequence of a higher aerobic fraction.  
  Address [Jungles, Mariele K.; Costa, Rejane H. R.] Fed Univ Santa Catarina UFSC, CTC, ENS, Dept Sanit & Environm Engn, BR-88010970 Florianopolis, SC, Brazil, Email: marielejungles@hotmail.com;  
  Corporate Author Thesis  
  Publisher Mdpi Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2227-9717 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000412051700009 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 944  
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Author Leao, J.; Leiva, V.; Saulo, H.; Tomazella, V. pdf  doi
openurl 
  Title Birnbaum-Saunders frailty regression models: Diagnostics and application to medical data Type Journal Article
  Year 2017 Publication Biometrical Journal Abbreviated Journal Biom. J.  
  Volume 59 Issue 2 Pages 291-314  
  Keywords Birnbaum-Saunders distribution; Censored data; Global and local influence; Maximum-likelihood method; Residual analysis  
  Abstract In survival models, some covariates affecting the lifetime could not be observed or measured. These covariates may correspond to environmental or genetic factors and be considered as a random effect related to a frailty of the individuals explaining their survival times. We propose a methodology based on a Birnbaum-Saunders frailty regression model, which can be applied to censored or uncensored data. Maximum-likelihood methods are used to estimate the model parameters and to derive local influence techniques. Diagnostic tools are important in regression to detect anomalies, as departures from error assumptions and presence of outliers and influential cases. Normal curvatures for local influence under different perturbations are computed and two types of residuals are introduced. Two examples with uncensored and censored real-world data illustrate the proposed methodology. Comparison with classical frailty models is carried out in these examples, which shows the superiority of the proposed model.  
  Address [Leao, Jeremias] Univ Fed Amazonas, Dept Stat, Manaus, Amazonas, Brazil, Email: victorleivasanchez@gmail.com  
  Corporate Author Thesis  
  Publisher Wiley Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0323-3847 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000396452500006 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 707  
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Author Leiva, V.; Ruggeri, F.; Saulo, H.; Vivanco, J.F. pdf  doi
openurl 
  Title A methodology based on the Birnbaum-Saunders distribution for reliability analysis applied to nano-materials Type Journal Article
  Year 2017 Publication Reliability Engineering & System Safety Abbreviated Journal Reliab. Eng. Syst. Saf.  
  Volume 157 Issue Pages 192-201  
  Keywords Bayesian analysis; Hardness data; Markov chain Monte Carlo method; R software  
  Abstract The Birnbaum-Saunders distribution has been widely studied and applied to reliability studies. This paper proposes a novel use of this distribution to analyze the effect on hardness, a material mechanical property, when incorporating nano-particles inside a polymeric bone cement. A plain variety and two modified types of mesoporous silica nano-particles are considered. In biomaterials, one can study the effect of nano-particles on mechanical response reliability. Experimental data collected by the authors from a micro-indentation test about hardness of a commercially available polymeric bone cement are analyzed. Hardness is modeled with the Birnbaum-Saunders distribution and Bayesian inference is performed to derive a methodology, which allows us to evaluate the effect of using nano-particles at different loadings by the R software. (C) 2016 Elsevier Ltd. All rights reserved.  
  Address [Leiva, Victor; Vivanco, Juan F.] Univ Adolfo Ibanez, Fac Sci & Engn, Vina del Mar, Chile, Email: victorleivictorleivasanchez@gmail.com  
  Corporate Author Thesis  
  Publisher Elsevier Sci Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0951-8320 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000387195700017 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 676  
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Author Loira, N.; Mendoza, S.; Cortes, M.P.; Rojas, N.; Travisany, D.; Di Genova, A.; Gajardo, N.; Ehrenfeld, N.; Maass, A. pdf  doi
openurl 
  Title Reconstruction of the microalga Nannochloropsis salina genome-scale metabolic model with applications to lipid production Type Journal Article
  Year 2017 Publication Bmc Systems Biology Abbreviated Journal BMC Syst. Biol.  
  Volume 11 Issue Pages 17 pp  
  Keywords Genome-scale Metabolic model; Nannochloropsis salina; TAG; Microalg ae  
  Abstract Background: Nannochloropsis salina (= Eustigmatophyceae) is a marine microalga which has become a biotechnological target because of its high capacity to produce polyunsaturated fatty acids and triacylglycerols. It has been used as a source of biofuel, pigments and food supplements, like Omega 3. Only some Nannochloropsis species have been sequenced, but none of them benefit from a genome-scale metabolic model (GSMM), able to predict its metabolic capabilities. Results: We present iNS934, the first GSMM for N. salina, including 2345 reactions, 934 genes and an exhaustive description of lipid and nitrogen metabolism. iNS934 has a 90% of accuracy when making simple growth/no-growth predictions and has a 15% error rate in predicting growth rates in different experimental conditions. Moreover, iNS934 allowed us to propose 82 different knockout strategies for strain optimization of triacylglycerols. Conclusions: iNS934 provides a powerful tool for metabolic improvement, allowing predictions and simulations of N. salina metabolism under different media and genetic conditions. It also provides a systemic view of N. salina metabolism, potentially guiding research and providing context to -omics data.  
  Address [Loira, Nicolas; Mendoza, Sebastian; Paz Cortes, Maria; Travisany, Dante; Di Genova, Alex; Maass, Alejandro] Univ Chile, Ctr Math Modeling, Math, Beauchef 851,7th Floor, Santiago, Chile, Email: nloira@dim.uchile.cl  
  Corporate Author Thesis  
  Publisher Biomed Central Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1752-0509 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000404918700001 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 744  
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Author Mahajan, S.M.; Asenjo, F.A. pdf  doi
openurl 
  Title Explicitly covariant dispersion relations and self-induced transparency Type Journal Article
  Year 2017 Publication Journal Of Plasma Physics Abbreviated Journal J. Plasma Phys.  
  Volume 83 Issue Pages 15 pp  
  Keywords magnetized plasmas; plasma waves  
  Abstract Explicitly covariant dispersion relations for a variety of plasma waves in unmagnetized and magnetized plasmas are derived in a systematic manner from a fully covariant plasma formulation. One needs to invoke relatively little known invariant combinations constructed from the ambient electromagnetic fields and the wave vector to accomplish the program. The implication of this work applied to the self- induced transparency effect is discussed. Some problems arising from the inconsistent use of relativity are pointed out.  
  Address [Mahajan, S. M.] Univ Texas Austin, Inst Fus Studies, Austin, TX 78712 USA, Email: mahajan@mail.utexas.edu;  
  Corporate Author Thesis  
  Publisher Cambridge Univ Press Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0022-3778 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000396123100018 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 713  
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Author McFadden, M.; Loconsole, J.; Schockling, A.; Nerenberg, R.; Pavissich, J.P. pdf  doi
openurl 
  Title Comparing peracetic acid and hypochlorite for disinfection of combined sewer overflows: Effects of suspended-solids and pH Type Journal Article
  Year 2017 Publication Science Of The Total Environment Abbreviated Journal Sci. Total Environ.  
  Volume 599 Issue Pages 533-539  
  Keywords PAA; Chlorine; Combined sewer overflows; Suspended solids; Disinfection  
  Abstract Peracetic acid (PM) is an alternative disinfectant that may be effective for combined sewer overflow (CSO) disinfection, but little is known about the effect of particle size on PM disinfection efficiency. In this work, PM and hypochlorite were compared as disinfectants, with a focus on the effect of wastewater particles. Inactivation experiments were conducted on suspended cultures of Escherichia coli and wastewater suspended solids. Tested size fractions included particle diameters <10 μm, <100 μm, and raw wastewater. Chlorine disinfection efficiency decreased with increasing solids size. However, solids size had little effect on PM disinfection. The PM disinfection efficiency decreased at pH values above 7.5. Live/dead staining revealed that PM disinfection leaves most cells in a viable but non-culturable condition. Fourier transform infrared spectroscopy (FTIR) analyses suggests that PAA and hypochlorite may inactivate E. coli bacteria by similar mechanisms. (C) 2017 Elsevier B.V. All rights reserved.  
  Address [McFadden, M.; Loconsole, J.; Schockling, Aj.; Nerenberg, R.; Pavissich, J. P.] Univ Notre Dame, Dept Civil & Environm Engn & Earth Sci, Notre Dame, IN 46556 USA, Email: juan.pavissich@uai.cl  
  Corporate Author Thesis  
  Publisher Elsevier Science Bv Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0048-9697 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000405252000057 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 829  
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Author Medina, P.; Goles, E.; Zarama, R.; Rica, S. pdf  doi
openurl 
  Title Self-Organized Societies: On the Sakoda Model of Social Interactions Type Journal Article
  Year 2017 Publication Complexity Abbreviated Journal Complexity  
  Volume Issue Pages 16 pp  
  Keywords  
  Abstract We characterize the behavior and the social structures appearing from a model of general social interaction proposed by Sakoda. The model consists of two interacting populations in a two-dimensional periodic lattice with empty sites. It contemplates a set of simple rules that combine attitudes, ranges of interactions, and movement decisions. We analyze the evolution of the 45 different interaction rules via a Potts-like energy function which drives the system irreversibly to an equilibriumor a steady state. We discuss the robustness of the social structures, dynamical behaviors, and the existence of spatial long range order in terms of the social interactions and the equilibrium energy.  
  Address [Medina, Pablo; Zarama, Roberto] Univ Los Andes, Dept Ingn Ind, Bogota, Colombia, Email: sergio.rica@uai.cl  
  Corporate Author Thesis  
  Publisher Hindawi Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1076-2787 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000394212300001 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 700  
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