Results for "Edward J. Delp"

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Robustness Analysis of Face ObscurationMay 13 2019Face obscuration is often needed by law enforcement or mass media outlets to provide privacy protection. Sharing sensitive content where the obscuration or redaction technique may have failed to completely remove all identifiable traces can lead to life-threatening ... More
A Hand-Held Multimedia Translation and Interpretation System with Application to Diet ManagementJul 17 2018We propose a network independent, hand-held system to translate and disambiguate foreign restaurant menu items in real-time. The system is based on the use of a portable multimedia device, such as a smartphones or a PDA. An accurate and fast translation ... More
Locating Objects Without Bounding BoxesJun 20 2018Apr 03 2019Recent advances in convolutional neural networks (CNN) have achieved remarkable results in locating objects in images. In these networks, the training procedure usually requires providing bounding boxes or the maximum number of expected objects. In this ... More
Three dimensional blind image deconvolution for fluorescence microscopy using generative adversarial networksApr 19 2019Due to image blurring image deconvolution is often used for studying biological structures in fluorescence microscopy. Fluorescence microscopy image volumes inherently suffer from intensity inhomogeneity, blur, and are corrupted by various types of noise ... More
Texture Segmentation Based Video Compression Using Convolutional Neural NetworksFeb 08 2018There has been a growing interest in using different approaches to improve the coding efficiency of modern video codec in recent years as demand for web-based video consumption increases. In this paper, we propose a model-based approach that uses texture ... More
Reliability Map Estimation For CNN-Based Camera Model AttributionMay 04 2018Among the image forensic issues investigated in the last few years, great attention has been devoted to blind camera model attribution. This refers to the problem of detecting which camera model has been used to acquire an image by only exploiting pixel ... More
Tubule segmentation of fluorescence microscopy images based on convolutional neural networks with inhomogeneity correctionFeb 10 2018Fluorescence microscopy has become a widely used tool for studying various biological structures of in vivo tissue or cells. However, quantitative analysis of these biological structures remains a challenge due to their complexity which is exacerbated ... More
Satellite Image Forgery Detection and Localization Using GAN and One-Class ClassifierFeb 13 2018Current satellite imaging technology enables shooting high-resolution pictures of the ground. As any other kind of digital images, overhead pictures can also be easily forged. However, common image forensic techniques are often developed for consumer ... More
Estimating Phenotypic Traits From UAV Based RGB ImageryJul 02 2018In many agricultural applications one wants to characterize physical properties of plants and use the measurements to predict, for example biomass and environmental influence. This process is known as phenotyping. Traditional collection of phenotypic ... More
Single-View Food Portion Estimation: Learning Image-to-Energy Mappings Using Generative Adversarial NetworksFeb 27 2018May 23 2018Due to the growing concern of chronic diseases and other health problems related to diet, there is a need to develop accurate methods to estimate an individual's food and energy intake. Measuring accurate dietary intake is an open research problem. In ... More
Three Dimensional Fluorescence Microscopy Image Synthesis and SegmentationJan 22 2018Apr 21 2018Advances in fluorescence microscopy enable acquisition of 3D image volumes with better image quality and deeper penetration into tissue. Segmentation is a required step to characterize and analyze biological structures in the images and recent 3D segmentation ... More
Weighted Hausdorff Distance: A Loss Function For Object LocalizationJun 20 2018Recent advances in Convolutional Neural Networks (CNN) have achieved remarkable results in localizing objects in images. In these networks, the training procedure usually requires providing bounding boxes or the maximum number of expected objects. In ... More
Multi-Reference Video Coding Using Stillness DetectionMar 11 2018Encoders of AOM/AV1 codec consider an input video sequence as succession of frames grouped in Golden-Frame (GF) groups. The coding structure of a GF group is fixed with a given GF group size. In the current AOM/AV1 encoder, video frames are coded using ... More
The marked length spectrum of a projective manifold or orbifoldDec 29 2009A strictly convex real projective orbifold is equipped with a natural Finsler metric called the Hilbert metric. In the case that the projective structure is hyperbolic, the Hilbert metric and the hyperbolic metric coincide. We prove that the marked Hilbert ... More
Medical device surveillance with electronic health recordsApr 03 2019Post-market medical device surveillance is a challenge facing manufacturers, regulatory agencies, and health care providers. Electronic health records are valuable sources of real world evidence to assess device safety and track device-related patient ... More
Automatic Text Area Segmentation in Natural ImagesJan 31 2008We present a hierarchical method for segmenting text areas in natural images. The method assumes that the text is written with a contrasting color on a more or less uniform background. But no assumption is made regarding the language or character set ... More
A matrix model for random nilpotent groupsFeb 03 2016We study random torsion-free nilpotent groups generated by a pair of random words of length $\ell$ in the standard generating set of $U_n(\mathbb{Z})$. Specifically, we give asymptotic results about the step properties of the group when the lengths of ... More
A simplified derivation of the Linear Noise ApproximationApr 24 2010Sep 28 2010Given a discrete stochastic process, for example a chemical reaction system or a birth and death process, we often want to find a continuous stochastic approximation so that the techniques of stochastic differential equations may be brought to bear. One ... More
Embedding an analytic equivalence relation in the transitive closure of a Borel relationApr 06 2012The transitive closure of a reflexive, symmetric, analytic relation is an analytic equivalence relation. Does some smaller class contain the transitive closure of every reflexive, symmetric, closed relation? An essentially negative answer is provided ... More
Self-tracking Energy Transfer for Neural Stimulation in Untethered MiceMar 04 2015Optical or electrical stimulation of neural circuits in mice during natural behavior is an important paradigm for studying brain function. Conventional systems for optogenetics and electrical microstimulation require tethers or large head-mounted devices ... More
Semi-decidable equivalence relations obtained by composition and lattice join of decidable equivalence relationsNov 08 2017Jan 20 2018Composition and lattice join (transitive closure of a union) of equivalence relations are operations taking pairs of decidable equivalence relations to relations that are semi-decidable, but not necessarily decidable. This article addresses the question, ... More
Experimental Tests of the Projection PostulateJan 13 2015Bell [Helv. Phys.Act. 48 1975] described an idealized test of the projection postulate in order to illustrate the ambiguities in the experimental predictions of quantum theory. An approach to the implementation of such tests is outlined here, based on ... More
Derivation of a Stochastic Neutron Transport EquationApr 14 2010Stochastic difference equations and a stochastic partial differential equation (SPDE) are simultaneously derived for the time-dependent neutron angular density in a general three-dimensional medium where the neutron angular density is a function of position, ... More
J. S. Mill's Liberal Principle and UnanimityMar 18 2019The broad concept of an individual's welfare is actually a cluster of related specific concepts that bear a "family resemblance" to one another. One might care about how a policy will affect people both in terms of their subjective preferences and also ... More
A Note on an R^2 Measure for Fixed Effects in the Generalized Linear Mixed ModelNov 01 2010Using the LRT statistic, a model R^2 is proposed for the generalized linear mixed model for assessing the association between the correlated outcomes and fixed effects. The R^2 compares the full model to a null model with all fixed effects deleted.
Problems In Groups, Geometry, and Three-ManifoldsDec 15 2015In May 2015, a conference entitled "Groups, Geometry, and 3-manifolds" was held at the University of California, Berkeley. The organizers asked participants to suggest problems and open questions, related in some way to the subject of the conference. ... More
Individual-level randomness in a nonatomic populationApr 01 2019This paper provides a construction of an uncountable family of i.i.d. random vectors, indexed by the points of a nonatomic measure space, such that (a) a sample is a measurable function from the index space, and (b) an idealization of the Glivenko-Cantelli ... More
A Counter-Forensic Method for CNN-Based Camera Model IdentificationMay 06 2018An increasing number of digital images are being shared and accessed through websites, media, and social applications. Many of these images have been modified and are not authentic. Recent advances in the use of deep convolutional neural networks (CNNs) ... More
Identifying the occurrence or non occurrence of cognitive bias in situations resembling the Monty Hall problemFeb 25 2018People reason heuristically in situations resembling inferential puzzles such as Bertrand's box paradox and the Monty Hall problem. The practical significance of that fact for economic decision making is uncertain because a departure from sound reasoning ... More
A parsimonious theory of evidence-based choiceFeb 24 2016Mar 03 2018That an agent's possible evidential states form a Boolean algebra (on which it is natural to define a probability measure) is an assertion that ideally should be proved, rather than assumed, in justifying rational choice as a representation of expected ... More
A parsimonious theory of evidence-based choiceFeb 24 2016May 15 2016Primitive entities of the theory to be presented here are a body of evidence available to an agent (called an evidential state) and an alternative in a set, from which the agent might choose. Assumptions are stated regarding the space of possible evidential ... More
Topological Conformal Gravity in Four DimensionsNov 14 1992In this paper, we present a new formulation of topological conformal gravity in four dimensions. Such a theory was first considered by Witten as a possible gravitational counterpart of topological Yang-Mills theory, but several problems left it incomplete. ... More
Chaotic dynamics of the Bianchi IX universe in Gauss-Bonnet gravityJan 29 2013We investigate the dynamics of closed FRW universe and anisotropic Bianchi type-IX universe characterized by two scale factors in a gravity theory including a higher curvature (Gauss-Bonnet) term. The presence of the cosmological constant creates a critical ... More
Row contractions annihilated by interpolating vanishing idealsFeb 18 2019We study similarity classes of commuting row contractions annihilated by what we call higher order vanishing ideals of interpolating sequences. Our main result exhibits a Jordan-type direct sum decomposition for these row contractions. We illustrate how ... More
BRS and Anti-BRS Symmetry in Topological Yang--Mills TheorySep 21 1992We incorporate both BRS symmetry and anti-BRS symmetry into the quantisation of topological Yang--Mills theory. This refines previous treatments which consider only the BRS symmetry. Our formalism brings out very clearly the geometrical meaning of topological ... More
Cyclic row contractions and rigidity of invariant subspacesSep 07 2018It is known that pure row contractions with one-dimensional defect spaces can be classified up to unitary equivalence by compressions of the standard $d$-shift acting on the full Fock space. Upon settling for a softer relation than unitary equivalence, ... More
Star-galaxy Classification Using Deep Convolutional Neural NetworksAug 15 2016Most existing star-galaxy classifiers use the reduced summary information from catalogs, requiring careful feature extraction and selection. The latest advances in machine learning that use deep convolutional neural networks allow a machine to automatically ... More
Star-galaxy Classification Using Deep Convolutional Neural NetworksAug 15 2016Oct 13 2016Most existing star-galaxy classifiers use the reduced summary information from catalogs, requiring careful feature extraction and selection. The latest advances in machine learning that use deep convolutional neural networks allow a machine to automatically ... More
Teaching Data ScienceApr 25 2016We describe an introductory data science course, entitled Introduction to Data Science, offered at the University of Illinois at Urbana-Champaign. The course introduced general programming concepts by using the Python programming language with an emphasis ... More
Gromov-Witten Gauge Theory IApr 30 2009Jan 12 2016We introduce a geometric completion of the stack of maps from stable marked curves to the quotient stack [point/GL(1)], and use it to construct some gauge-theoretic analogues of the Gromov-Witten invariants. We also indicate the generalization of these ... More
A High-Order Kernel Method for Diffusion and Reaction-Diffusion Equations on SurfacesMay 31 2012In this paper we present a high-order kernel method for numerically solving diffusion and reaction-diffusion partial differential equations (PDEs) on smooth, closed surfaces embedded in $\mathbb{R}^d$. For two-dimensional surfaces embedded in $\mathbb{R}^3$, ... More
The Difference between Radio-Loud and Radio-Quiet Active GalaxiesAug 02 1994The recent development of unified theories of active galactic nuclei (AGN) has indicated that there are two physically distinct classes of these objects - radio-loud and radio-quiet. The primary observational distinctions between the two types are: (1) ... More
Non-classicality of the molecular vibrations assisting exciton energy transfer at room temperatureJan 29 2013Jan 09 2014Advancing the debate on quantum effects in light-initiated reactions in biology requires clear identification of non-classical features that these processes can exhibit and utilise. Here we show that in prototype dimers present in a variety of photosynthetic ... More
Self-Supervised Generalisation with Meta Auxiliary LearningJan 25 2019Learning with auxiliary tasks has been shown to improve the generalisation of a primary task. However, this comes at the cost of manually-labelling additional tasks which may, or may not, be useful for the primary task. We propose a new method which automatically ... More
The Effect of Higher Harmonic Corrections on the Detection of massive black hole binaries with LISAApr 02 2008Massive black hole binaries are key targets for the space based gravitational wave interferometer LISA. Several studies have investigated how LISA observations could be used to constrain the parameters of these systems. Until recently, most of these studies ... More
Searching for Massive Black Hole Binaries in the first Mock LISA Data ChallengeJan 30 2007The Mock LISA Data Challenge is a worldwide effort to solve the LISA data analysis problem. We present here our results for the Massive Black Hole Binary (BBH) section of Round 1. Our results cover Challenge 1.2.1, where the coalescence of the binary ... More
The quantitative measure and statistical distribution of fameApr 24 2018Fame and celebrity play an ever-increasing role in our culture. However, despite the cultural and economic importance of fame and its gradations, there exists no consensus method for quantifying the fame of an individual, or of comparing that of two individuals. ... More
The multi-frequency parsec-scale structure of PKS 2254-367 (IC 1459): a luminosity-dependent break in morphology for the precursors of radio galaxies?Jan 19 2015We present the first multi-frequency VLBI images of PKS 2254-367, a Giga-hertz Peaked Spectrum (GPS) radio source hosted by the nearby galaxy IC 1459 (D=20.5 Mpc). PKS 2254-367 and the radio source in NGC 1052 (PKS 0238-084; D=17.2 Mpc) are the two closest ... More
Model reduction for Kuramoto models with complex topologiesApr 20 2018Jun 27 2018Synchronisation of coupled oscillators is a ubiquitous phenomenon, occurring in topics ranging from biology and physics, to social networks and technology. A fundamental and long-time goal in the study of synchronisation has been to find low-order descriptions ... More
The Hard X-ray Luminosity of OB Star Populations: Implications for the Contribution of Star Formation to the Cosmic X-ray BackgroundMar 29 2001We present an empirical analysis of the integrated X-ray luminosity arising from populations of OB stars. In particular, we utilize results from the All-Sky Monitor on RXTE, along with archival data from previous missions, to assess the mean integrated ... More
New candidate GHz Peaked Spectrum and Compact Steep Spectrum SourcesJul 01 2004Data from a recent Australia Telescope Compact Array (ATCA) program of multi-frequency, multi-epoch monitoring of 202 active galactic nuclei with declinations < +10 degrees have been searched for GHz Peaked Spectrum (GPS) and Compact Steep Spectrum (CSS) ... More
Evidence for Heterotic/Heterotic DualityJan 09 1996We re-examine the question of heterotic - heterotic string duality in six dimensions and argue that the $E_8\times E_8$ heterotic string, compactified on $K3$ with equal instanton numbers in the two $E_8$'s, has a self-duality that inverts the coupling, ... More
Smooth classification of Cartan actions of higher rank semisimple Lie groups and their latticesJun 21 1996Nov 01 1999Let G be a connected semisimple Lie group without compact factors whose real rank is at least 2, and let \Gamma \subset G be an irreducible lattice. We provide a C^\infty classification for volume-preserving Cartan actions of \Gamma and G. Also, if G ... More
On Livsic's Theorem, Superrigidity, and Anosov Actions of Semisimple Lie GroupsJun 21 1996We prove a generalization of Livsic's Theorem on the vanishing of the cohomology of certain types of dynamical systems. As a consequence, we strengthen a result due to Zimmer concerning algebraic hulls of Anosov actions of semisimple Lie groups. Combining ... More
An improved upper bound on the diameters of subset partition graphsDec 18 2014In 1992, Kalai and Kleitman proved the first subexponential upper bound for the diameters of convex polyhedra. Eisenbrand et al. proved this bound holds for connected layer families, a novel approach to analyzing polytope diameters. Very recently, Todd ... More
Measurement of the integrated Sachs-Wolfe effect using the AllWISE data releaseApr 13 2016Apr 15 2018One of the physical features of a dark-energy-dominated universe is the integrated Sachs-Wolfe (ISW) effect on the cosmic microwave background (CMB) radiation, which gives us a direct observational window to detect and study dark energy. The AllWISE data ... More
Atom interferometry using wavepackets with constant spatial displacementsDec 31 2006Feb 20 2010We demonstrate a standing wave light pulse sequence that places atoms into a superposition of displaced wavepackets with precisely controlled displacements that remain constant for times as long as 1 s. The separated wavepackets are subsequently recombined ... More
Demonstration of a moving guide based atom interferometer for rotation sensingAug 07 2006Sep 02 2007We demonstrate area-enclosing atom interferometry based on a moving guide. Light pulses along the free propagation direction of a magnetic guide are applied to split and recombine the confined atomic matter-wave, while the atoms are translated back and ... More
Elastic properties of model porous ceramicsJun 22 2000The finite element method (FEM) is used to study the influence of porosity and pore shape on the elastic properties of model porous ceramics. The Young's modulus of each model was found to be practically independent of the solid Poisson's ratio. At a ... More
The Search for Massive Black Hole Binaries with LISADec 14 2006Nov 15 2007In this work we focus on the search and detection of Massive black hole binary (MBHB) systems, including systems at high redshift. As well as expanding on previous works where we used a variant of Markov Chain Monte Carlo (MCMC), called Metropolis-Hastings ... More
Nonlinear Damping of the LC Circuit using Anti-parallel DiodesJun 30 2006We investigate a simple variation of the series RLC circuit in which anti-parallel diodes replace the resistor. This results in a damped harmonic oscillator with a nonlinear damping term that is maximal at zero current and decreases with an inverse current ... More
Antibiasing: High Mass-to-Light Ratios in Dense ClustersOct 20 1998Modeling of the velocity field of the Local Supercluster leads to the conclusion that there must be a substantial differential between the mass-to-light ratios of most galaxies and those in a small number of special places. Specifically, M/L=1000 is indicated ... More
Institutionalization in Efficient Markets: The Case of Price BubblesAug 23 2016We seek to deepen understanding of the micro-foundations of institutionalization while contributing to a sociological theory of markets by investigating the puzzle of price bubbles in financial markets. We find that such markets, despite textbook conditions ... More
Pairwise Decomposition of Image Sequences for Active Multi-View RecognitionMay 26 2016A multi-view image sequence provides a much richer capacity for object recognition than from a single image. However, most existing solutions to multi-view recognition typically adopt hand-crafted, model-based geometric methods, which do not readily embrace ... More
Deep Learning a Grasp Function for Grasping under Gripper Pose UncertaintyAug 07 2016This paper presents a new method for parallel-jaw grasping of isolated objects from depth images, under large gripper pose uncertainty. Whilst most approaches aim to predict the single best grasp pose from an image, our method first predicts a score for ... More
High-Mass X-ray Binaries: progenitors of double compact objectsJan 21 2019Jan 25 2019A summary is given of the present state of our knowledge of High-Mass X-ray Binaries (HMXBs), their formation and expected future evolution. Among the HMXB-systems that contain neutron stars, only those that have orbital periods upwards of one year will ... More
A Conversation with Dorothy GilfordOct 25 2007In 1946, Public Law 588 of the 79th Congress established the Office of Naval Research (ONR). Its mission was to plan, foster and encourage scientific research in support of Naval problems. The establishment of ONR predates the National Science Foundation ... More
Catching Super Massive Black Hole Binaries Without a NetMay 26 2006Aug 09 2006The gravitational wave signals from coalescing Supermassive Black Hole Binaries are prime targets for the Laser Interferometer Space Antenna (LISA). With optimal data processing techniques, the LISA observatory should be able to detect black hole mergers ... More
Fisher vs. Bayes : A comparison of parameter estimation techniques for massive black hole binaries to high redshifts with eLISAFeb 19 2015Massive black hole binaries are the primary source of gravitational waves (GW) for the future eLISA observatory. The detection and parameter estimation of these sources to high redshift would provide invaluable information on the formation mechanisms ... More
Detecting Galactic Binaries with LISAApr 04 2005Aug 08 2005One of the main sources of gravitational waves for the LISA space-borne interferometer are galactic binary systems. The waveforms for these sources are represented by eight parameters, of which four are extrinsic, and four are intrinsic to the system. ... More
Time domain deBroglie wave interferometry along a magnetic guideMar 16 2005Jun 25 2005Time domain deBroglie wave interferometry [Cahn et al, Phys. Rev. Lett. 79, 784] is applied to Rb87 atoms in a magnetic guide. A standing wave light field is carefully aligned along the guiding direction of the magnetic trapping potential from a soft-ferromagnetic ... More
Scaling Properties of Paths on GraphsJun 12 2013Let $G$ be a directed graph on finitely many vertices and edges, and assign a positive weight to each edge on $G$. Fix vertices $u$ and $v$ and consider the set of paths that start at $u$ and end at $v$, self-intersecting in any number of places along ... More
Hybrid Baryons in QCDJan 11 2012We present the first comprehensive study of hybrid baryons using lattice QCD methods. Using a large basis of composite QCD interpolating fields we extract an extensive spectrum of baryon states and isolate those of hybrid character using their relatively ... More
Two Photon Decays of Charmonia from Lattice QCDJul 12 2006Oct 31 2006We make the first calculation in lattice QCD of two-photon decays of mesons. Working in the charmonium sector, using the LSZ reduction to relate a photon to a sum of hadronic vector eigenstates, we compute form-factors in both the space-like and time-like ... More
Tail diameter upper bounds for polytopes and polyhedraMar 13 2016In 1992, Kalai and Kleitman proved a quasipolynomial upper bound on the diameters of convex polyhedra. Todd and Sukegawa-Kitahara proved tail-quasipolynomial bounds on the diameters of polyhedra. These tail bounds apply when the number of facets is greater ... More
A Radial Basis Function Method for Computing Helmholtz-Hodge DecompositionsFeb 05 2015Mar 05 2015A radial basis function (RBF) method based on matrix-valued kernels is presented and analyzed for computing two types of vector decompositions on bounded domains: one where the normal component of the divergence-free part of the field is specified on ... More
Non-Abelian basis tensor gauge theoryMay 20 2019Basis tensor gauge theory is a vierbein analog reformulation of ordinary gauge theories in which the difference of local field degrees of freedom has the interpretation of an object similar to a Wilson line. Here we present a non-Abelian basis tensor ... More
Gravitational production of super-Hubble-mass particles: an analytic approachDec 01 2018Dec 08 2018Through a mechanism similar to perturbative particle scattering, particles of mass $m_\chi$ larger than the Hubble expansion rate $H_\mathrm{inf}$ during inflation can be gravitationally produced at the end of inflation without the exponential suppression ... More
A Hybrid Ensemble Learning Approach to Star-Galaxy ClassificationMay 08 2015Jul 14 2015There exist a variety of star-galaxy classification techniques, each with their own strengths and weaknesses. In this paper, we present a novel meta-classification framework that combines and fully exploits different techniques to produce a more robust ... More
Numerical and experimental studies of resonators with reduced resonant frequencies and small electrical sizesOct 14 2008Methods on reducing resonant frequencies and electrical sizes of resonators are reported in this paper. Theoreti-cal and numerical analysis has been used and the results for the broadside-coupled resonators from both studies exhibit good agreement. Initial ... More
Excited meson radiative transitions from lattice QCD using variationally optimized operatorsJan 29 2015We explore the use of optimized operators, designed to interpolate only a single meson eigenstate, in three-point correlation functions with a vector-current insertion. These operators are constructed as linear combinations in a large basis of meson interpolating ... More
An $a_0$ resonance in strongly coupled $πη$, $K\overline{K}$ scattering from lattice QCDFeb 16 2016We present the first calculation of coupled-channel meson-meson scattering in the isospin $=1$, $G$-parity negative sector, with channels $\pi \eta$, $K\overline{K}$ and $\pi \eta'$, in a first-principles approach to QCD. From the discrete spectrum of ... More
Investigation of Vertical Spiral Resonators for Low Frequency Metamaterial DesignOct 14 2008This paper thoroughly explores the characteristics of vertical spiral resonators (VSR). They exhibit rela-tively high Q factors and sizes around a few percent of the free space wavelength, which make them ideal candi-dates for assembling metamaterial ... More
Information Maximization Fails to Maximize Expected Utility in a Simple Foraging ModelOct 22 2010Information theory has explained the organization of many biological phenomena, from the physiology of sensory receptive fields to the variability of certain DNA sequence ensembles. Some scholars have proposed that information should provide the central ... More
Dirac vs Majorana gauginos at a 100 TeV colliderJun 22 2016We compare the prospects for observing theories with Majorana or Dirac gauginos at a future 100 TeV proton-proton collider. Calculating the expected discovery and exclusion regions, we find that for heavy gluino masses the squark discovery reach is significantly ... More
Superheavy dark matterFeb 05 1998May 26 1998We show that in large-field inflationary scenarios, superheavy (many orders of magnitude larger than the weak scale) dark matter will be produced in cosmologically interesting quantities if superheavy stable particles exist in the mass spectrum. We show ... More
Are ultrahigh energy cosmic rays signals of supersymmetry?Jul 02 1997Dec 19 1997We investigate the possibility that cosmic rays of energy larger than the Greisen-Zatsepin-Kuzmin cutoff are not nucleons, but a new stable, massive, hadron that appears in many extensions of the standard model. We focus primarily on the S^0, a uds-gluino ... More
Nonthermal Supermassive Dark MatterMay 27 1998Sep 25 1998We discuss several cosmological production mechanisms for nonthermal supermassive dark matter and argue that dark matter may be elementary particles of mass much greater than the weak scale. Searches for dark matter should not be limited to weakly interacting ... More
Exact analytical solution of irreversible binary dynamics on networksNov 07 2017Mar 13 2018In binary cascade dynamics, the nodes of a graph are in one of two possible states (inactive, active), and nodes in the inactive state make an irreversible transition to the active state, as soon as their precursors satisfy a predetermined condition. ... More
Spectral dimension reduction of complex dynamical networksSep 21 2018Feb 12 2019Dynamical networks are powerful tools for modeling a broad range of complex systems, including financial markets, brains, and ecosystems. They encode how the basic elements (nodes) of these systems interact altogether (via links) and evolve (nodes' dynamics). ... More
Rethinking System Health ManagementMar 10 2019Health management of complex dynamic systems has traditionally evolved separately from automated control, planning, and scheduling (generally referred to in the paper as decision making). A goal of Integrated System Health Management has been to enable ... More
ShortFuse: Biomedical Time Series Representations in the Presence of Structured InformationMay 13 2017May 16 2017In healthcare applications, temporal variables that encode movement, health status and longitudinal patient evolution are often accompanied by rich structured information such as demographics, diagnostics and medical exam data. However, current methods ... More
Local spin-wave dispersion and damping in thin yttrium-iron-garnet filmsMar 13 2018Using ultrafast magneto-optic sampling microscopy, we investigate the spin-wave dispersion and spin-wave damping in yttrium-iron-garnet films. With the aid of the inhomogeneous magnetic field generated by coplanar waveguides spin-waves are excited at ... More
GEOMetrics: Exploiting Geometric Structure for Graph-Encoded ObjectsJan 31 2019Mesh models are a promising approach for encoding the structure of 3D objects. Current mesh reconstruction systems predict uniformly distributed vertex locations of a predetermined graph through a series of graph convolutions, leading to compromises with ... More
A Cryogenic Infrared Calibration TargetMar 26 2014A compact cryogenic calibration target is presented that has a peak diffuse reflectance, $R \le 0.003$, from $800-4,800\,{\rm cm}^{-1}$ $(12-2\,\mu$m). Upon expanding the spectral range under consideration to $400-10,000\,{\rm cm}^{-1}$ $(25-1\,\mu$m) ... More
Bayesian genome assembly and assessment by Markov Chain Monte Carlo samplingAug 06 2013Oct 15 2013Most genome assemblers construct point estimates, choosing a genome sequence from among many alternative hypotheses that are supported by the data. We present a Markov Chain Monte Carlo approach to sequence assembly that instead generates distributions ... More
ParaBank: Monolingual Bitext Generation and Sentential Paraphrasing via Lexically-constrained Neural Machine TranslationJan 11 2019We present ParaBank, a large-scale English paraphrase dataset that surpasses prior work in both quantity and quality. Following the approach of ParaNMT, we train a Czech-English neural machine translation (NMT) system to generate novel paraphrases of ... More
$\text{Co}_{25}\text{Fe}_{75}$ Thin Films with Ultralow Total DampingApr 24 2018We measure the dynamic properties of $\text{Co}_{25}\text{Fe}_{75}$ thin films grown by dc magnetron sputtering. Using ferromagnetic resonance spectroscopy, we demonstrate an ultralow total damping parameter in the out-of-plane configuration of < 0.0013, ... More
Charge Symmetry Breaking and QCDFeb 21 2006Charge symmetry breaking (CSB) in the strong interaction occurs because of the difference between the masses of the up and down quarks. The use of effective field theories allows us to follow this influence of confined quarks in hadronic and nuclear systems. ... More
Radiative Transitions in Charmonium from Lattice QCDJan 17 2006Jun 13 2006Radiative transitions between charmonium states offer an insight into the internal structure of heavy-quark bound states within QCD. We compute, for the first time within lattice QCD, the transition form-factors of various multipolarities between the ... More