Results for "Regina Caputo"

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Looking Under a Better Lamppost: MeV-scale Dark Matter CandidatesMar 14 2019The era of precision cosmology has revealed that about 85% of the matter in the universe is dark matter. Two well-motivated candidates are weakly interacting massive particles (WIMPs) and weakly interacting sub-eV particles (WISPs) (e.g. axions). Both ... More
Uniform Poincare inequalities for unbounded conservative spin systems: The non-interacting caseFeb 04 2002Mar 17 2003We prove a uniform Poincare' inequality for non-interacting unbounded spin systems with a conservation law, when the single-site potential is a bounded perturbation of a convex function. The result is then applied to Ginzburg-Landau processes to show ... More
On the spectral gap of the Kac walk and other binary collision processesJul 22 2008We give a new and elementary computation of the spectral gap of the Kac walk on the N-sphere. The result is obtained as a by-product of a more general observation which allows to reduce the analysis of the spectral gap of an N-component system to that ... More
Minimum Bias Triggers at ATLAS, LHCDec 02 2008In the first phase of LHC data-taking ATLAS will measure the charged-particle density at the initial center-of-mass energy of 10 TeV and then at 14 TeV. This will allow us improve our knowledge of soft QCD models and pin-down cross-sections of different ... More
X-ray follow-up of extragalactic transientsMar 13 2019Most violent and energetic processes in our universe, including mergers of compact objects, explosions of massive stars and extreme accretion events, produce copious amounts of X-rays. X-ray follow-up is an efficient tool for identifying transients because ... More
Radiative Axion InflationFeb 07 2019Planck data robustly exclude the simple $\lambda\phi^4$ scenario for inflation. This is also the case for models of Axion Inflation in which the inflaton field is the radial part of the Peccei-Quinn complex scalar field. In this letter we show that for ... More
Splitting in the K-theory localization sequence of number fieldsFeb 15 2010Feb 25 2010Let p be a rational prime and let F be a number field. Then, for each i>0, there is a short exact localization sequence for K_{2i}(F). If p is odd or F is nonexceptional, we find necessary and sufficient conditions for this exact sequence to split: these ... More
The Brauer-Kuroda formula for higher S-class numbers in dihedral extensions of number fieldsApr 17 2010Apr 20 2010Let p be an odd prime and let L/k be a Galois extension of number fields whose Galois group is isomorphic to the dihedral group of order 2p. Let S be a finite set of primes of L which is stable under the action of Gal(L/k). The Lichtenbaum conjecture ... More
Radiative Axion InflationFeb 07 2019Aug 05 2019Planck data robustly exclude the simple $\lambda\phi^4$ scenario for inflation. This is also the case for models of Axion Inflation in which the inflaton field is the radial part of the Peccei-Quinn complex scalar field. In this letter we show that for ... More
Dynamical fragment production in central collisions Xe(50 A.MeV)+SnMar 09 1998For central collisions Xe(50 A.MeV)+Sn we compared experimental data from the INDRA detector with QMD simulations. Theory as well as experiment show a clear binary character of the fragment emission even for very central collisions. From the time evolution ... More
Blue-blocking spectacles lenses for retinal damage protection and circadian rhythm: evaluation parametersJun 11 2018There is evidence for the effect of blue light on circadian cycle and ocular pathologies. Moreover, the introduction of LED lamps has increased the presence of blue light. In the last two years, many different blue blocking ophthalmic lenses have been ... More
A human centered perspective of E-maintenanceJul 10 2014E-maintenance is a technology aiming to organize and structure the ICT during the whole life cycle of the product, to develop a maintenance support system that is effective and efficient. A current challenge of E-maintenance is the development of generic ... More
Large deviations of empirical neighborhood distribution in sparse random graphsAug 27 2013Apr 07 2016Consider the Erd\H{o}s-Renyi random graph on n vertices where each edge is present independently with probability c/n, with c>0 fixed. For large n, a typical random graph locally behaves like a Galton-Watson tree with Poisson offspring distribution with ... More
Convergence to equilibrium for a directed (1+d)-dimensional polymerApr 09 2015We consider a flip dynamics for directed (1+d)-dimensional lattice paths with length L. The model can be interpreted as a higher dimensional version of the simple exclusion process, the latter corresponding to the case d=1. We prove that the mixing time ... More
Mixing time of PageRank surfers on sparse random digraphsMay 13 2019Given a digraph $G$, a parameter $\alpha\in(0,1)$ and a distribution $\lambda$ over the vertices of $G$, the generalised PageRank surf on $G$ with parameters $\alpha$ and $\lambda$ is the Markov chain on the vertices of $G$ such that at each step with ... More
Search for gamma-ray emission from $p$-wave dark matter annihilation in the Galactic CenterApr 12 2019Indirect searches for dark matter through Standard Model products of its annihilation generally assume a cross-section which is dominated by a term independent of velocity ($s$-wave annihilation). However, in many DM models an $s$-wave annihilation cross-section ... More
A Note on Wetting Transition for Gradient FieldsSep 10 1999We prove existence of a wetting transition for two types of gradient fields: 1) Continuous SOS models in any dimension and 2) Massless Gaussian model in two dimensions. Combined with a recent result showing the absence of such a transition for Gaussian ... More
Diffusivity in one-dimensional generalized Mott variable-range hopping modelsJan 09 2007Aug 31 2009We consider random walks in a random environment which are generalized versions of well-known effective models for Mott variable-range hopping. We study the homogenized diffusion constant of the random walk in the one-dimensional case. We prove various ... More
An explicit candidate for the set of Steinitz classes of tame Galois extensions with fixed Galois group of odd orderNov 08 2011Mar 04 2012Given a finite group G and a number field k, a well-known conjecture asserts that the set R_t(k,G) of Steinitz classes of tame G-Galois extensions of k is a subgroup of the ideal class group of k. In this paper we investigate an explicit candidate for ... More
Isoperimetric inequalities and mixing time for a random walk on a random point processJul 31 2006Oct 31 2007We consider the random walk on a simple point process on $\Bbb{R}^d$, $d\geq2$, whose jump rates decay exponentially in the $\alpha$-power of jump length. The case $\alpha =1$ corresponds to the phonon-induced variable-range hopping in disordered solids ... More
Cosmic implications of a low-scale solution to the axion domain wall problemMay 30 2019The post-inflationary breaking of Peccei-Quinn (PQ) symmetry can lead to the cosmic domain wall catastrophe. In this Letter we show how to avoid domain walls implementing the Instanton Interference Effect (IIE) with a new interaction which itself breaks ... More
Global metallicity of globular cluster stars from colour-magnitude diagramsFeb 27 2002We have developed an homogeneous evolutionary scenario for H- and He-burning low-mass stars by computing updated stellar models for a wide metallicity and age range (0.0002$\le Z \le$0.004 and 9$\le t(Gyr) \le$15, respectively) suitable to study globular ... More
Asymmetric diffusion and the energy gap above the 111 ground state of the quantum XXZ modelJun 26 2001We consider the anisotropic three dimensional XXZ Heisenberg ferromagnet in a cylinder with axis along the 111 direction and boundary conditions that induce ground states describing an interface orthogonal to the cylinder axis. Let $L$ be the linear size ... More
Towards Learning free Naive Bayes Nearest Neighbor-based Domain AdaptationMar 26 2015As of today, object categorization algorithms are not able to achieve the level of robustness and generality necessary to work reliably in the real world. Even the most powerful convolutional neural network we can train fails to perform satisfactorily ... More
Finite volume approximation of the effective diffusion matrix: The case of independent bond disorderOct 19 2001Consider uniformly elliptic random walk on $\bbZ^d$ with independent jump rates across nearest neighbour bonds of the lattice. We show that the infinite volume effective diffusion matrix can be almost surely recovered as the limit of finite volume periodized ... More
Time scales: from Nabla calculus to Delta calculus and vice versa via dualityOct 01 2009Jan 17 2010In this note we show how one can obtain results from the nabla calculus from results on the delta calculus and vice versa via a duality argument. We provide applications of the main results to the calculus of variations on time scales.
Preliminary Results of the Fermi High-Latitude Extended Source CatalogSep 19 2017We report on preliminary results from the Fermi High-Latitude Extended Sources Catalog (FHES), a comprehensive search for spatially extended gamma-ray sources at high Galactic latitudes ($|b|>5^\circ$) based on data from the Fermi Large Area Telescope ... More
Phase ordering after a deep quench: the stochastic Ising and hard core gas models on a treeDec 22 2004Consider a low temperature stochastic Ising model in the phase coexistence regime with Markov semigroup $P_t$. A fundamental and still largely open problem is the understanding of the long time behavior of $\d_\h P_t$ when the initial configuration $\h$ ... More
Entropy dissipation estimates in a Zero-Range dynamicsMay 24 2004Sep 26 2006We study the exponential decay of relative entropy functionals for zero-range processes on the complete graph. For the standard model with rates increasing at infinity we prove entropy dissipation estimates, uniformly over the number of particles and ... More
Gauss sums, Jacobi sums and cyclotomic units related to torsion Galois modulesFeb 16 2014Let $G$ be a finite group and let $N/E$ be a tamely ramified $G$-Galois extension of number fields. We show how Stickelberger's factorization of Gauss sums can be used to determine the stable isomorphism class of various arithmetic $\mathbb{Z}[G]$-modules ... More
Leveraging over intact priors for boosting control and dexterity of prosthetic hands by amputeesAug 26 2016Non-invasive myoelectric prostheses require a long training time to obtain satisfactory control dexterity. These training times could possibly be reduced by leveraging over training efforts by previous subjects. So-called domain adaptation algorithms ... More
A large deviation principle for Wigner matrices without Gaussian tailsJul 24 2012Oct 28 2014We consider $n\times n$ Hermitian matrices with i.i.d. entries $X_{ij}$ whose tail probabilities $\mathbb {P}(|X_{ij}|\geq t)$ behave like $e^{-at^{\alpha}}$ for some $a>0$ and $\alpha \in(0,2)$. We establish a large deviation principle for the empirical ... More
Entropy production in nonlinear recombination modelsSep 22 2016We study the convergence to equilibrium of a class of nonlinear recombination models. In analogy with Boltzmann's H theorem from kinetic theory, and in contrast with previous analysis of these models, convergence is measured in terms of relative entropy. ... More
On the splitting of the exact sequence relating the wild and tame kernelsMar 10 2013Let k be a number field. For an odd prime p and an integer i>1, the i-th \'etale wild kernel is contained in the second cohomology group of o'_k with coefficients in Zp(i), where o'_k is the ring of p-integers of k. Using Iwasawa theory, we give conditions ... More
On fake Z_p extensions of number fieldsJul 07 2008May 10 2009After providing a general result for dihedral extensions, we study the growth of the $p$-part of the class group of the non-normal subfields of the anticyclotomic extension of an imaginary quadratic field, providing a formula of Iwasawa type. Furthermore, ... More
Relaxation time of anisotropic simple exclusion processes and quantum Heisenberg modelsFeb 04 2002Motivated by an exact mapping between anisotropic half integer spin quantum Heisenberg models and asymmetric diffusions on the lattice, we consider an anisotropic simple exclusion process with $N$ particles in a rectangle of $\bbZ^2$. Every particle at ... More
Volume, diameter and the minimal mass of a stationary 1-cycleJan 28 2002Oct 21 2002In this paper we present upper bounds on the minimal mass of a non-trivial stationary 1-cycle. The results that we obtain are valid for all closed Riemannian manifolds. The first result is that the minimal mass of a stationary 1-cycle on a closed n-dimensional ... More
Automatic Aggregation by Joint Modeling of Aspects and ValuesJan 23 2014We present a model for aggregation of product review snippets by joint aspect identification and sentiment analysis. Our model simultaneously identifies an underlying set of ratable aspects presented in the reviews of a product (e.g., sushi and miso for ... More
Learning to Paraphrase: An Unsupervised Approach Using Multiple-Sequence AlignmentApr 02 2003We address the text-to-text generation problem of sentence-level paraphrasing -- a phenomenon distinct from and more difficult than word- or phrase-level paraphrasing. Our approach applies multiple-sequence alignment to sentences gathered from unannotated ... More
Dynamics of point Josephson junctions in a microstrip lineApr 03 2010We analyze a new long wave model describing the electrodynamics of an array of point Josephson junctions in a superconducting cavity. It consists in a wave equation with Dirac delta function sine nonlinearities. We introduce an adapted spectral problem ... More
Unidirectional Propagation of an Ultra-Short Electromagnetic Pulse in a Resonant Medium with High Frequency Stark ShiftJul 18 2001We consider in the unidirectional approximation the propagation of an ultra short electromagnetic pulse in a resonant medium consisting of molecules characterized by a transition operator with both diagonal and non-diagonal matrix elements. We find the ... More
Monotone homotopies and contracting discs on Riemannian surfacesNov 13 2013Oct 05 2016We prove a "gluing" theorem for monotone homotopies; a monotone homotopy is a homotopy through simple contractible closed curves which themselves are pairwise disjoint. We show that two monotone homotopies which have appropriate overlap can be replaced ... More
Fermipy: An open-source Python package for analysis of Fermi-LAT DataJul 29 2017Fermipy is an open-source python framework that facilitates analysis of data collected by the Fermi Large Area Telescope (LAT). Fermipy is built on the Fermi Science Tools, the publicly available software suite provided by NASA for the LAT mission. Fermipy ... More
Dynamics of point Josephson junctions in a microstrip lineJan 27 2005We model the dynamics of point Josephson junctions in a 1D microstrip line using a wave equation with delta distributed sine nonlinearities. The model is suitable for both low T$_c$ and high T$_c$ systems (0 and $\pi$ junctions). For a single junction ... More
Statics of point Josephson junctions in a micro strip lineJul 11 2006We model the static behavior of point Josephson junctions in a micro strip line using a 1D linear differential equation with delta distributed sine non-linearities. We analyze the maximum current $\gamma_{max}$ crossing the micro strip for a given magnetic ... More
Influence of the passive region on Zero Field Steps for window Josephson junctionsMar 31 2002We present a numerical and analytic study of the influence of the passive region on fluxon dynamics in a window junction. We examine the effect of the extension of the passive region and its electromagnetic characteristics, its surface inductance and ... More
Reaction-diffusion front crossing a local defectJun 14 2011The interaction of a Zeldovich reaction-diffusion front with a localized defect is studied numerically and analytically. For the analysis, we start from conservation laws and develop simple collective variable ordinary differential equations for the front ... More
Discrete sine-Gordon dynamics on networksJun 08 2015In this study we consider the sine-Gordon equation formulated on domains which are not locally homeomorphic to any subset of the Euclidean space. More precisely, we formulate the discrete dynamics on trees and graphs. Each edge is assumed to be a 1D uniform ... More
Highly Degenerate Harmonic Mean Curvature FlowApr 24 2008We study the evolution of a weakly convex surface $\Sigma_0$ in $\R^3$ with flat sides by the Harmonic Mean Curvature flow. We establish the short time existence as well as the optimal regularity of the surface and we show that the boundaries of the flat ... More
Positron Annihilation in the GalaxyMar 13 2019The 511 keV line from positron annihilation in the Galaxy was the first $\gamma$-ray line detected to originate from outside our solar system. Going into the fifth decade since the discovery, the source of positrons is still unconfirmed and remains one ... More
Search for Gamma-ray Emission from Dark Matter Annihilation in the Small Magellanic Cloud with the Fermi Large Area TelescopeMar 03 2016Mar 29 2016The Small Magellanic Cloud (SMC) is the second-largest satellite galaxy of the Milky Way and is only 60 kpc away. As a nearby, massive, and dense object with relatively low astrophysical backgrounds, it is a natural target for dark matter indirect detection ... More
Nonlinear waves in networks: a simple approach using the sine--Gordon equationFeb 26 2014To study the propagation of nonlinear waves across Y-- and T--type junctions, we consider the 2D sine--Gordon equation as a model and study the dynamics of kinks and breathers in such geometries. The comparison of the energies reveals that the angle of ... More
Regularity for non-local almost minimal boundaries and applicationsMar 12 2010Jun 09 2011We introduce a notion of non-local almost minimal boundaries similar to that introduced by Almgren in geometric measure theory. Extending methods developed recently for non-local minimal surfaces we prove that flat non-local almost minimal boundaries ... More
Domain Generalization with Domain-Specific Aggregation ModulesSep 28 2018Visual recognition systems are meant to work in the real world. For this to happen, they must work robustly in any visual domain, and not only on the data used during training. Within this context, a very realistic scenario deals with domain generalization, ... More
Designing arrays of Josephson junctions for specific static responsesMar 12 2007We consider the inverse problem of designing an array of superconducting Josephson junctions that has a given maximum static current pattern as function of the applied magnetic field. Such devices are used for magnetometry and as Terahertz oscillators. ... More
HB Morphology and Age Indicators for Metal-Poor Stellar Systems with Age in the Range of 1 to 20 GyrJul 20 1994Isochrone computations and horizontal branch (HB) models for Y(MS)=0.23 and two values of Z (0.0001, 0.0004)are used to derive constraints on the age indicators and HB morphology of metal-poor clusters with age t (in Gyrs) in the range of 1< t < 20.It ... More
A simple theory for the Raman spikeSep 11 2003The classical stimulated Raman scattering system describing resonant interaction between two electromagnetic waves and a fast relaxing medium wave is studied by introducting a systematic perturbation approach in powers of the relaxation time. We separate ... More
Synchronization in fiber lasers arraysApr 25 2013We consider an array of fiber lasers coupled through the nearest neighbors. The model is a generalized nonlinear Schroedinger equation where the usual Laplacian is replaced by the graph Laplacian. For a graph with no symmetries, we show that there is ... More
Global regularity of solutions to systems of reaction-diffusion with Sub-Quadratic Growth in any dimensionJan 28 2009This paper is devoted to the study of the regularity of solutions to some systems of reaction--diffusion equations, with reaction terms having a subquadratic growth. We show the global boundedness and regularity of solutions, without smallness assumptions, ... More
A projection algorithm for non-monotone variational inequalitiesSep 30 2016We introduce and study the convergence properties of a projection-type algorithm for solving the variational inequality problem for point-to-set operators. No monotoni\-city assumption is used in our analysis. The operator defining the problem is only ... More
A projection algorithm for non-monotone variational inequalitiesSep 30 2016Nov 28 2017We introduce and study the convergence properties of a projection-type algorithm for solving the variational inequality problem for point-to-set operators. No monotoni\-city assumption is used in our analysis. The operator defining the problem is only ... More
Boundary Conditions for Free Interfaces with the Lattice Boltzmann MethodSep 19 2014Feb 16 2015In this paper we analyze the boundary treatment of the lattice Boltzmann method (LBM) for simulating 3D flows with free surfaces. The widely used free surface boundary condition of K\"orner et al. (2005) is shown to be first order accurate. The article ... More
Supersymmetric quantum mechanics, the variational method and a new shape invariant potentialFeb 20 2001The association of the variational method with supersymmetric quantum mechanics through an ansatz for the superpotential is reviewed and the approximate energy spectra of non-exactly solvable potentials, such like the Hulthen, the Morse and the screened ... More
Induced Variational Method from Supersymmetric Quantum Mechanics and the Screened Coulomb PotentialFeb 02 2000The formalism of Supersymmetric Quantum Mechanics supplies a trial wave function to be used in the Variational Method. The screened Coulomb potential is analysed within this approach. Numerical and exact results for energy eigenvalues are compared.
The Hierarchy of Hamiltonians for a Restricted Class of Natanzon PotentialsApr 06 1999The restricted class of Natanzon potentials with two free parameters is studied within the context of Supersymmetric Quantum Mechanics. The hierarchy of Hamiltonians is indicated, where the first members of the superfamily are explicitly evaluated and ... More
Supersymmetry, Variational Method and Hulthén PotentialJul 25 1995The formalism of Supersymmetric Quantum Mechanics provides us the eigenfunctions to be used in the variational mathod to obtain the eigenvalues for the Hulth\'en Potential.
Spatially Resolved Emission of a High Redshift DLA Galaxy with the Keck/OSIRIS IFUOct 31 2013We present the first Keck/OSIRIS infrared IFU observations of a high redshift damped Lyman-alpha (DLA) galaxy detected in the line of sight to a background quasar. By utilizing the Laser Guide Star Adaptive Optics (LGSAO) to reduce the quasar PSF to FWHM~0.15 ... More
Growth-Driven Percolations: The Dynamics of Community Formation in Neuronal SystemsNov 02 2004The quintessential property of neuronal systems is their intensive patterns of selective synaptic connections. The current work describes a physics-based approach to neuronal shape modeling and synthesis and its consideration for the simulation of neuronal ... More
Contracting the boundary of a Riemannian 2-discMay 24 2012Dec 03 2014Let $D$ be a Riemannian 2-disc of area $A$, diameter $d$ and length of the boundary $L$. We prove that it is possible to contract the boundary of $D$ through curves of length $\leq L + 200d\max\{1,\ln {\sqrt{A}\over d} \}$. This answers a twenty-year ... More
Seasonal FIEGARCH ProcessesApr 23 2019Here we develop the theory of seasonal FIEGARCH processes, denoted by SFIEGARCH, establishing conditions for the existence, the invertibility, the stationarity and the ergodicity of these processes. We analyze their asymptotic dependence structure by ... More
Path-Augmented Graph Transformer NetworkMay 29 2019Much of the recent work on learning molecular representations has been based on Graph Convolution Networks (GCN). These models rely on local aggregation operations and can therefore miss higher-order graph properties. To remedy this, we propose Path-Augmented ... More
The window Josephson junction: a coupled linear nonlinear systemJun 05 2001We investigate the interface coupling between the 2D sine-Gordon equation and the 2D wave equation in the context of a Josephson window junction using a finite volume numerical method and soliton perturbation theory. The geometry of the domain as well ... More
RR Lyrae stars in Galactic globular clusters.III. Pulsational predictions for metal content Z=0.0001 to Z=0.006May 21 2004The results of nonlinear, convective models of RR Lyrae pulsators with metal content Z=0.0001 to 0.006 are discussed and several predicted relations connecting pulsational (period and amplitude of pulsation) and evolutionary parameters (mass, absolute ... More
Theoretical models for classical cepheids: V. Multiwavelength relationsNov 23 1999From a theoretical study based on nonlinear, nonlocal and time-dependent convective pulsating models at varying mass and chemical composition, we present the predicted Period-Luminosity, Period-Color, Color-Color and Period-Luminosity-Color relations ... More
Spectrum of large random reversible Markov chains: two examplesNov 07 2008May 31 2010We take on a Random Matrix theory viewpoint to study the spectrum of certain reversible Markov chains in random environment. As the number of states tends to infinity, we consider the global behavior of the spectrum, and the local behavior at the edge, ... More
Circular Law Theorem for Random Markov MatricesAug 11 2008Jun 09 2010Consider an nxn random matrix X with i.i.d. nonnegative entries with bounded density, mean m, and finite positive variance sigma^2. Let M be the nxn random Markov matrix with i.i.d. rows obtained from X by dividing each row of X by its sum. In particular, ... More
Spectrum of Markov generators on sparse random graphsFeb 03 2012Feb 16 2014We investigate the spectrum of the infinitesimal generator of the continuous time random walk on a randomly weighted oriented graph. This is the non-Hermitian random nxn matrix L defined by L(j,k)=X(j,k) if k<>j and L(j,j)=-sum(L(j,k),k<>j), where X(j,k) ... More
A Complete Method of Comparative Statics for Optimization Problems (Unabbreviated Version)Oct 27 2013A new method of deriving comparative statics information using generalized compensated derivatives is presented which yields constraint-free semidefiniteness results for any differentiable, constrained optimization problem. More generally, it applies ... More
Triple Scoring Using Paragraph Vector - The Gailan Triple Scorer at WSDM Cup 2017Dec 22 2017In this paper we describe our solution to the WSDM Cup 2017 Triple Scoring task. Our approach generates a relevance score based on the textual description of the triple's subject and value (Object). It measures how similar (related) the text description ... More
Approximate tensorization of entropy at high temperatureMay 03 2014Feb 16 2015We show that for weakly dependent random variables the relative entropy functional satisfies an approximate version of the standard tensorization property which holds in the independent case. As a corollary we obtain a family of dimensionless logarithmic ... More
Random walk on sparse random digraphsAug 26 2015Jan 22 2018A finite ergodic Markov chain exhibits cutoff if its distance to equilibrium remains close to its initial value over a certain number of iterations and then abruptly drops to near 0 on a much shorter time scale. Originally discovered in the context of ... More
Hydrohalite Salt-albedo Feedback Could Cool M-dwarf PlanetsAug 29 2018A possible surface type that may form in the environments of M-dwarf planets is sodium chloride dihydrate, or "hydrohalite" (NaCl $\cdot$ 2H$_2$O), which can precipitate in bare sea ice at low temperatures. Unlike salt-free water ice, hydrohalite is highly ... More
Multi-resolution Autoregressive Graph-to-Graph Translation for MoleculesJun 11 2019The problem of accelerating drug discovery relies heavily on automatic tools to optimize precursor molecules to afford them with better biochemical properties. Our work in this paper substantially extends prior state-of-the-art on graph-to-graph translation ... More
Junction Tree Variational Autoencoder for Molecular Graph GenerationFeb 12 2018Mar 29 2019We seek to automate the design of molecules based on specific chemical properties. In computational terms, this task involves continuous embedding and generation of molecular graphs. Our primary contribution is the direct realization of molecular graphs, ... More
Aspect-augmented Adversarial Networks for Domain AdaptationJan 01 2017Sep 25 2017We introduce a neural method for transfer learning between two (source and target) classification tasks or aspects over the same domain. Rather than training on target labels, we use a few keywords pertaining to source and target aspects indicating sentence ... More
Maximal monotonicity, conjugation and the duality productFeb 12 2008Feb 13 2008Recently, the authors studied the connection between each maximal monotone operator T and a family H(T) of convex functions. Each member of this family characterizes the operator and satisfies two particular inequalities. The aim of this paper is to establish ... More
Rationalizing Neural PredictionsJun 13 2016Prediction without justification has limited applicability. As a remedy, we learn to extract pieces of input text as justifications -- rationales -- that are tailored to be short and coherent, yet sufficient for making the same prediction. Our approach ... More
Heralded orthogonalisation of coherent states and their conversion to discrete-variable superpositionsFeb 01 2017The nonorthogonality of coherent states is a fundamental property which prevents them from being perfectly and deterministically discriminated. To circumvent this problem, we present an experimentally feasible protocol for the probabilistic orthogonalisation ... More
Modeling heterogeneity in ranked responses by nonparametric maximum likelihood: How do Europeans get their scientific knowledge?Jan 07 2011This paper is motivated by a Eurobarometer survey on science knowledge. As part of the survey, respondents were asked to rank sources of science information in order of importance. The official statistical analysis of these data however failed to use ... More
Quantum Computation with Vibrationally Excited MoleculesAug 05 2002A new physical implementation for quantum computation is proposed. The vibrational modes of molecules are used to encode qubit systems. Global quantum logic gates are realized using shaped femtosecond laser pulses which are calculated applying optimal ... More
Monotone Operators without EnlargementsOct 14 2011Enlargements have proven to be useful tools for studying maximally monotone mappings. It is therefore natural to ask in which cases the enlargement does not change the original mapping. Svaiter has recently characterized non-enlargeable operators in reflexive ... More
Star luminosity function as an age indicator for the Dwarf spheroidal Leo IJul 23 1995Star luminosity function, already recognized as an age indicator for old galactic globular clusters, can be used to contrains the age of younger stellar systems like the nearby dwarfs spheroidal Leo I. We compare the observed luminosity function of Leo ... More
Coupling conditions for the nonlinear shallow water equations in forksSep 30 2015Oct 11 2016We study numerically and analytically how nonlinear shallow water waves propagate in a fork. Using a homothetic reduction procedure, conservation laws and numerical analysis in a 2D domain, we obtain simple angle dependent coupling conditions for the ... More
Nonlinear Analysis of Experimental Noisy Time Series in Fluidized Bed SystemsAug 02 1994The paper describes the application of some numerical techniques to analyze and to characterize the observed dynamical behaviour of fluidized bed systems. The preliminary results showed clearly that the dynamics of the considered process can be nonrecurrent ... More
Adaptive Learning to Speed-Up Control of Prosthetic Hands: a Few Things Everybody Should KnowFeb 27 2017A number of studies have proposed to use domain adaptation to reduce the training efforts needed to control an upper-limb prosthesis exploiting pre-trained models from prior subjects. These studies generally reported impressive reductions in the required ... More
Entropic repulsion in $|\nabla φ|^p$ surfaces: a large deviation bound for all $p\geq 1$Jan 12 2017We consider the $(2+1)$-dimensional generalized solid-on-solid (SOS) model, that is the random discrete surface with a gradient potential of the form $|\nabla\phi|^{p}$, where $p\in [1,+\infty]$. We show that at low temperature, for a square region $\Lambda$ ... More
Proof of Aldous' spectral gap conjectureJun 06 2009Sep 28 2009Aldous' spectral gap conjecture asserts that on any graph the random walk process and the random transposition (or interchange) process have the same spectral gap. We prove the conjecture using a recursive strategy. The approach is a natural extension ... More
Duality for the left and right fractional derivativesSep 18 2014We prove duality between the left and right fractional derivatives, independently on the type of fractional operator. Main result asserts that the right derivative of a function is the dual of the left derivative of the dual function or, equivalently, ... More
Nonlinear energy transmission in the gapMar 09 2001Numerical simulations of the scattering of a linear plane wave incoming onto a nonlinear medium (sine-Gordon) reveals that: i) nonlinearity allows energy transmission in the forbidden band, ii) this nonlinear transmission occurs beyond an energy threshold ... More
Cosmic Rays and Interstellar Medium with Gamma-Ray Observations at MeV EnergiesMar 13 2019Latest precise cosmic-ray (CR) measurements and present gamma-ray observations have started challenging our understanding of CR transport and interaction in the Galaxy. Moreover, because the density of CRs is similar to the density of the magnetic field, ... More