Results for "Boi Faltings"

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Partial Truthfulness in Minimal Peer Prediction Mechanisms with Limited KnowledgeNov 17 2017Nov 26 2017We study minimal single-task peer prediction mechanisms that have limited knowledge about agents' beliefs. Without knowing what agents' beliefs are or eliciting additional information, it is not possible to design a truthful mechanism in a Bayesian-Nash ... More
Protecting Privacy through Distributed Computation in Multi-agent Decision MakingFeb 04 2014Jul 12 2014As large-scale theft of data from corporate servers is becoming increasingly common, it becomes interesting to examine alternatives to the paradigm of centralizing sensitive data into large databases. Instead, one could use cryptography and distributed ... More
Decentralized Anti-coordination Through Multi-agent LearningFeb 04 2014To achieve an optimal outcome in many situations, agents need to choose distinct actions from one another. This is the case notably in many resource allocation problems, where a single resource can only be used by one agent at a time. How shall a designer ... More
Anytime Heuristic for Weighted Matching Through Altruism-Inspired BehaviorFeb 25 2019We present a novel anytime heuristic (ALMA), inspired by the human principle of altruism, for solving the assignment problem. ALMA is decentralized, completely uncoupled, and requires no communication between the participants. We prove an upper bound ... More
Information Gathering with Peers: Submodular Optimization with Peer-Prediction ConstraintsNov 17 2017Nov 24 2017We study a problem of optimal information gathering from multiple data providers that need to be incentivized to provide accurate information. This problem arises in many real world applications that rely on crowdsourced data sets, but where the process ... More
Context Tree for Adaptive Session-based RecommendationJun 10 2018There has been growing interests in recent years from both practical and research perspectives for session-based recommendation tasks as long-term user profiles do not often exist in many real-life recommendation applications. In this case, recommendations ... More
Mechanisms for Making Crowds TruthfulJan 15 2014We consider schemes for obtaining truthful reports on a common but hidden signal from large groups of rational, self-interested agents. One example are online feedback mechanisms, where users provide observations about the quality of a product or service ... More
Branch-and-Prune Search Strategies for Numerical Constraint SolvingDec 11 2005May 08 2007When solving numerical constraints such as nonlinear equations and inequalities, solvers often exploit pruning techniques, which remove redundant value combinations from the domains of variables, at pruning steps. To find the complete solution set, most ... More
Personalized News Recommendation with Context TreesMar 04 2013Nov 03 2014The profusion of online news articles makes it difficult to find interesting articles, a problem that can be assuaged by using a recommender system to bring the most relevant news stories to readers. However, news recommendation is challenging because ... More
Peer Truth Serum: Incentives for Crowdsourcing Measurements and OpinionsApr 18 2017Modern decision making tools are based on statistical analysis of abundant data, which is often collected by querying multiple individuals. We consider data collection through crowdsourcing, where independent and self-interested agents, non-experts, report ... More
A Practical Solution to Yao's Millionaires' Problem and Its Application in Designing Secure Combinatorial AuctionJun 15 2019The emergence of e-commerce and e-voting platforms has resulted in the rise in the volume of sensitive information over the Internet. This has resulted in an increased demand for secure and private means of information computation. Towards this, the Yao's ... More
CompNet: Neural networks growing via the compact network morphismApr 27 2018It is often the case that the performance of a neural network can be improved by adding layers. In real-world practices, we always train dozens of neural network architectures in parallel which is a wasteful process. We explored $CompNet$, in which case ... More
Personalization in Goal-Oriented DialogJun 22 2017Dec 15 2017The main goal of modeling human conversation is to create agents which can interact with people in both open-ended and goal-oriented scenarios. End-to-end trained neural dialog systems are an important line of research for such generalized dialog models ... More
Meta-Learning for Low-resource Natural Language Generation in Task-oriented Dialogue SystemsMay 14 2019Natural language generation (NLG) is an essential component of task-oriented dialogue systems. Despite the recent success of neural approaches for NLG, they are typically developed for particular domains with rich annotated training examples. In this ... More
LocalCoin: An Ad-hoc Payment Scheme for Areas with High ConnectivityAug 27 2017Nov 26 2017The popularity of digital currencies, especially cryptocurrencies, has been continuously growing since the appearance of Bitcoin. Bitcoin's security lies in a proof-of-work scheme, which requires high computational resources at the miners. Despite advances ... More
Privacy Preserving and Cost Optimal Mobile Crowdsensing using Smart Contracts on BlockchainAug 13 2018Aug 20 2018The popularity and applicability of mobile crowdsensing applications are continuously increasing due to the widespread of mobile devices and their sensing and processing capabilities. However, we need to offer appropriate incentives to the mobile users ... More
Generators of simple Lie algebras in arbitrary characteristicsAug 13 2007Jul 14 2008In this paper we study the minimal number of generators for simple Lie algebras in characteristic 0 or p > 3. We show that any such algebra can be generated by 2 elements. We also examine the 'one and a half generation' property, i.e. when every non-zero ... More
Preference-based Search using Example-Critiquing with SuggestionsSep 30 2011We consider interactive tools that help users search for their most preferred item in a large collection of options. In particular, we examine example-critiquing, a technique for enabling users to incrementally construct preference models by critiquing ... More
Generators of simple Lie algebras IIJun 27 2008This paper is a continuation of earlier work on generators of simple Lie algebras in arbitrary characteristic (see arXiv:0708.1711). We show that, in contrast to classical Lie algebras, simple graded Lie algebras of Cartan type S,H or K never enjoy the ... More
Size-dependence of non-empirically tuned DFT starting points for $G_0W_0$ applied to $π$-conjugated molecular chainsJun 01 2017Aug 25 2017$G_0W_0$ calculations for predicting vertical ionization potentials (IPs) and electron affinities of molecules and clusters are known to show a significant dependence on the density functional theory (DFT) starting point. A number of non-empirical procedures ... More
Probabilistic generation of random networks taking into account information on motifs occurrenceNov 25 2013Because of the huge number of graphs possible even with a small number of nodes, inference on network structure is known to be a challenging problem. Generating large random directed graphs with prescribed probabilities of occurrences of some meaningful ... More
Algebraic families of subfields in division ringsNov 02 2010Mar 23 2011We describe relations between maximal subfields in a division ring and in its rational extensions. More precisely, we prove that properties such as being Galois or purely inseparable over the centre generically carry over from one to another. We provide ... More
Pattern Formation in Double-Layer Kerr Resonators with Coupled ModesNov 08 2016A double-layer Kerr resonator in which both coupled modes are excited and interact with each other via incoherent cross-phase modulation is investigated to reveal stable localized solutions beyond the usual formation mechanism involving a single mode. ... More
Eddy diffusivities of inertial particles in random Gaussian flowsNov 08 2016We investigate the large-scale transport of inertial particles. We derive explicit analytic expressions for the eddy diffusivities for generic Stokes times. These latter expressions are exact for any shear flow while they correspond to the leading contribution ... More
Pattern Formation in Double-Layer Kerr Resonators with Coupled ModesNov 08 2016Dec 16 2016A double-layer Kerr resonator in which both coupled modes are excited and interact with each other via incoherent cross-phase modulation is investigated to reveal stable localized solutions beyond the usual formation mechanism involving a single mode. ... More
Weyl groups for non-classical restricted Lie algebras and the Chevalley restriction theoremMar 23 2010Feb 17 2012Let (g,[p]) be a finite-dimensional restricted Lie algebra, defined over an algebraically closed field k of characteristic p>0. The scheme of tori of maximal dimension of g gives rise to a finite group S(g) that coincides with the Weyl group of g in case ... More
Structure learning of Bayesian networks involving cyclic structuresJun 12 2019Many biological networks include cyclic structures. In such cases, Bayesian networks (BNs), which must be acyclic, are not sound models for structure learning. Dynamic BNs can be used but require relatively large time series data. We discuss an alternative ... More
One-dimensional two-orbital SU(N) ultracold fermionic quantum gases at incommensurate filling: a low-energy approachFeb 02 2016We investigate the zero-temperature phase diagram of two-orbital SU(N) fermionic models at incommensurate filling which are directly relevant to strontium and ytterbium ultracold atoms loading into a one-dimensional optical lattice. Using a low-energy ... More
Integration of Omics Data and Systems Biology Modeling: Effect of Cyclosporine A on the Nrf2 Pathway in Human Renal Kidneys CellsDec 17 2013In a recent paper, Wilmes et al. demonstrated a qualitative integration of omics data streams to gain a mechanistic understanding of cyclosporine A toxicity. One of their major conclusions was that cyclosporine A strongly activates the nuclear factor ... More
Structure learning of Bayesian networks involving cyclic structuresJun 12 2019Jun 25 2019Many biological networks include cyclic structures. In such cases, Bayesian networks (BNs), which must be acyclic, are not sound models for structure learning. Dynamic BNs can be used but require relatively large time series data. We discuss an alternative ... More
Competing superconducting instabilities in the one-dimensional p-band degenerate cold fermionic systemMay 25 2015Aug 27 2015The zero-temperature phase diagram of $p$-orbital two-component fermionic system loaded into a one-dimensional optical lattice is mapped out by means of analytical and numerical techniques. It is shown that the $p$-band model away from half-filling hosts ... More
Phase diagrams of one-dimensional half-filled two-orbital SU(N) cold fermions systemsOct 11 2014Mar 02 2015We investigate possible realizations of exotic SU(N) symmetry-protected topological (SPT) phases with alkaline-earth cold fermionic atoms loaded into one-dimensional optical lattices. A thorough study of two-orbital generalizations of the standard SU(N) ... More
A high-throughput analysis of woman ovarian cycle disruption by mixtures of aromatase inhibitorsSep 13 2016Background: Combining computational toxicology with ExpoCast exposure data and ToxCast assay data gives us access to predictions of human health risks stemming from realistic exposures to chemical mixtures. Objectives: To quantify, through mathematical ... More
Conditions of Dynamical Stability for the HD 160691 Planetary SystemJan 27 2003Sep 01 2003The orbits in the HD 160691 planetary system at first appeared highly unstable, but using the MEGNO and FLI techniques of global dynamics analysis in the orbital parameter space we have found a stabilizing mechanism that could be the key to its existence. ... More
Graph_sampler: a simple tool for fully Bayesian analyses of DAG-modelsMay 27 2015Feb 04 2016Bayesian networks (BNs) are widely used graphical models usable to draw statistical inference about Directed acyclic graphs (DAGs). We presented here Graph_sampler a fast free C language software for structural inference on BNs. Graph_sampler uses a fully ... More
Improving Transferability of Deep Neural NetworksJul 30 2018Learning from small amounts of labeled data is a challenge in the area of deep learning. This is currently addressed by Transfer Learning where one learns the small data set as a transfer task from a larger source dataset. Transfer Learning can deliver ... More
The Arrow Calculus as a Quantum Programming LanguageMar 09 2009Apr 10 2009We express quantum computations (with measurements) using the arrow calculus extended with monadic constructions. This framework expresses quantum programming using well-understood and familiar classical patterns for programming in the presence of computational ... More
Generalization of Taylor's formula to particles of arbitrary inertiaJan 04 2018Oct 13 2018One of the cornerstones of turbulent dispersion is the celebrated Taylor formula. This formula expresses the rate of transport (i.e. the eddy diffusivity) of a tracer as a time integral of the fluid velocity auto-correlation function evaluated along the ... More
Calibration and improved prediction of computer models by universal KrigingJan 17 2013Feb 26 2013This paper addresses the use of experimental data for calibrating a computer model and improving its predictions of the underlying physical system. A global statistical approach is proposed in which the bias between the computer model and the physical ... More
Galaxy mergers at high resolution: From elliptical galaxies to tidal dwarfs and globular clustersSep 05 2008Numerical simulations of galaxy mergers are a powerful tool to study these fundamental events in the hierarchical built-up of galaxies. Recent progress have been made owing to improved modeling, increased resolution and large statistical samples. We present ... More
Symbolic lumping of some catenary, mamillary and circular compartmental systemsFeb 20 2008Some of the most important compartmental systems, such as irreversible catenary, mamillary and circular systems are symbolically simplified by the method of exact linear lumping. A few symbolically unmanageable systems are numerically lumped. Transformation ... More
Global dynamics and stability limits for planetary systems around HD 12661, HD 38529, HD 37124 and HD 160691Jul 17 2002Sep 11 2002In order to distinguish between regular and chaotic planetary orbits we apply a new technique called MEGNO in a wide neighbourhood of orbital parameters determined using standard two-body Keplerian fits for HD 12661, HD 38529, HD 37124 and HD 160691 planetary ... More
Hamamatsu PMT R7056 Study for the Extinction Monitoring System of the Mu2e Experiment at FermilabNov 06 2015The Mu2e experiment at Fermilab proposes to search for the coherent neutrino-less conversion of muons to electrons in the presence of a nucleus. The experimental signature for an aluminum target is an isolated 105 MeV electron exiting the stopping target ... More
A high-throughput analysis of ovarian cycle disruption by mixtures of aromatase inhibitorsSep 13 2016May 02 2017Background: Combining computational toxicology with ExpoCast exposure estimates and ToxCast assay data gives us access to predictions of human health risks stemming from exposures to chemical mixtures. Objectives: To explore, through mathematical modeling ... More
Anisotropic Vapor HF etching of silicon dioxide for Si microstructure releaseJul 10 2012Damages are created in a sacrificial layer of silicon dioxide by ion implantation to enhance the etch rate of silicon-dioxide in liquid and vapor phase hydrofluoric acid. The etch rate ratio between implanted and unimplanted silicon dioxide is more than ... More
Infant mortality across species. A global probe of congenital abnormalitiesMay 05 2019Infant mortality, by which we understand the postnatal stage during which mortality is declining, is a manifestation and embodiment of congenital abnormalities. Severe defects will translate into death occurring shortly after birth whereas slighter anomalies ... More
Congenital anomalies from a physics perspective. The key role of "manufacturing" volatilityMay 05 2019Genetic and environmental factors are traditionally seen as the sole causes of congenital anomalies. In this paper we introduce a third possible cause, namely random "manufacturing" discrepancies with respect to ``design'' values. A clear way to demonstrate ... More
Calibration and GEANT4 Simulations of the Phase II Proton Compute Tomography (pCT) Range Stack DetectorJan 03 2016Jan 05 2016Northern Illinois University in collaboration with Fermi National Accelerator Laboratory (FNAL) and Delhi University has been designing and building a proton CT scanner for applications in proton treatment planning. The Phase II proton CT scanner consists ... More
The Atlas3D project - XXIV. The intrinsic shape distribution of early-type galaxiesAug 05 2014We use the Atlas3D sample to perform a study of the intrinsic shapes of early-type galaxies, taking advantage of the available combined photometric and kinematic data. Based on our ellipticity measurements from the Sloan Digital Sky Survey Data Release ... More
Simulations of binary galaxy mergers and the link with Fast Rotators, Slow Rotators, and Kinematically Distinct CoresJan 04 2012We study the formation of early-type galaxies (ETGs) through mergers with a sample of 70 high-resolution numerical simulations of binary mergers of disc galaxies. These simulations encompass various mass ratios, initial conditions and orbital parameters. ... More
Scaling relations in early-type galaxies from integral-field stellar kinematicsAug 13 2009We study the origin of the scaling relations of early-type galaxies (ETGs) by constructing detailed models of the stellar dynamics for the K-band selected, volume-limited ATLAS3D sample of 263 nearby ETGs, spanning a large range of masses and stellar ... More
Molecular Gas and Star Formation in Local Early-Type GalaxiesFeb 09 2011The molecular gas content of local early-type galaxies is constrained and discussed in relation to their evolution. First, as part of the Atlas3D survey, we present the first complete, large (260 objects), volume-limited single-dish survey of CO in normal ... More
The ATLAS 3D project - XVI. Physical parameters and spectral line energy distributions of the molecular gas in gas-rich early-type galaxiesDec 11 2012[Abridged] We present a detailed study of the physical properties of the molecular gas in a sample of 18 molecular gas-rich early-type galaxies (ETGs) from the ATLAS$ 3D sample. Our goal is to better understand the star formation processes occurring in ... More
The ATLAS3D Project -- XXIII. Angular momentum and nuclear surface brightness profilesMay 21 2013Jun 13 2013[Abridged and Edited] We investigate nuclear light profiles in 135 ATLAS3D galaxies for which the Hubble Space Telescope (HST) imaging is available and compare them to the large scale kinematics obtained with the SAURON integral-field spectrograph. Specific ... More
The ATLAS3D Project - XXI. Correlations between gradients of local escape velocity and stellar populations in early-type galaxiesNov 19 2012We explore the connection between the local escape velocity, V_esc, and the stellar population properties in the ATLAS3D survey, a complete, volume-limited sample of nearby early-type galaxies. We make use of ugriz photometry to construct Multi-Gaussian ... More
A systematic variation of the stellar initial mass function in early-type galaxiesFeb 15 2012Much of our knowledge of galaxies comes from analysing the radiation emitted by their stars. It depends on the stellar initial mass function (IMF) describing the distribution of stellar masses when the population formed. Consequently knowledge of the ... More
The Atlas3D project -- IV: the molecular gas content of early-type galaxiesFeb 22 2011Feb 26 2011We have carried out a survey for 12CO J=1-0 and J=2-1 emission in the 260 early-type galaxies of the volume-limited Atlas3D sample, with the goal of connecting their star formation and assembly histories to their cold gas content. This is the largest ... More
Quenching of Star Formation in Molecular Outflow Host NGC 1266Nov 14 2012We detail the rich molecular story of NGC 1266, its serendipitous discovery within the ATLAS3D survey (Cappellari et al. 2011) and how it plays host to an AGN-driven molecular outflow, potentially quenching all of its star formation (SF) within the next ... More
The Atlas3D project -- XXVII. Cold Gas and the Colours and Ages of Early-type GalaxiesDec 21 2013We present a study of the cold gas contents of the Atlas3D early-type galaxies, in the context of their optical colours, near-UV colours, and H\beta\ absorption line strengths. Early-type (elliptical and lenticular) galaxies are not as gas-poor as previously ... More
The Atlas3D project - XIV. The extent and kinematics of molecular gas in early-type galaxiesNov 05 2012We use interferometric CO observations to compare the extent, surface brightness profiles and kinematics of the molecular gas in CO-rich Atlas3D early-type galaxies (ETGs) and spiral galaxies. We find that the molecular gas extent is smaller in absolute ... More
The ATLAS3D project - XVIII. CARMA CO imaging survey of early-type galaxiesOct 19 2012We present the Combined Array for Research in Millimeter Astronomy (CARMA) ATLAS3D molecular gas imaging survey, a systematic study of the distribution and kinematics of molecular gas in CO-rich early-type galaxies. Our full sample of 40 galaxies (30 ... More
The ATLAS3D project - III. A census of the stellar angular momentum within the effective radius of early-type galaxies: unveiling the distribution of Fast and Slow RotatorsFeb 22 2011We provide a census of the apparent stellar angular momentum within 1 Re of a volume-limited sample of 260 early-type galaxies (ETGs) in the nearby Universe, using integral-field spectroscopy obtained in the course of the ATLAS3D project. We exploit the ... More
The Atlas3D project -- I. A volume-limited sample of 260 nearby early-type galaxies: science goals and selection criteriaDec 07 2010The Atlas3D project is a multi-wavelength survey combined with a theoretical modeling effort. The observations span from the radio to the millimeter and optical, and provide multi-colour imaging, two-dimensional kinematics of the atomic (HI), molecular ... More
Gemini GMOS and WHT SAURON integral-field spectrograph observations of the AGN driven outflow in NGC 1266Jul 24 2012We use the SAURON and GMOS integral field spectrographs to observe the active galactic nucleus (AGN) powered outflow in NGC 1266. This unusual galaxy is relatively nearby (D=30 Mpc), allowing us to investigate the process of AGN feedback in action. We ... More
The Atlas3D Project - VI. Simulations of binary galaxy mergers and the link with Fast Rotators, Slow Rotators, and Kinematically Distinct CoresMay 20 2011We study the formation of early-type galaxies through mergers with a sample of 70 high-resolution (softening length < 60 pc and 12*10^6 particles) numerical simulations of binary mergers of disc galaxies and 16 simulations of ETG remergers. These simulations, ... More
The Atlas3D project - XV. Benchmark for early-type galaxies scaling relations from 260 dynamical models: mass-to-light ratio, dark matter, Fundamental Plane and Mass PlaneAug 17 2012Mar 27 2013We study the volume-limited and nearly mass selected (stellar mass M>6*10^9 Msun) Atlas3D sample of 260 early-type galaxies. We construct detailed axisymmetric dynamical models (JAM), which allow for orbital anisotropy, include a dark matter halo, and ... More
AGN Feedback Driven Molecular Outflow in NGC 1266Nov 14 2012NGC 1266 is a nearby field galaxy observed as part of the ATLAS3D survey (Cappellari et al. 2011). NGC 1266 has been shown to host a compact (< 200 pc) molecular disk and a mass-loaded molecular outflow driven by the AGN (Alatalo et al. 2011). Very Long ... More
Formation of slowly rotating early-type galaxies via major mergers: a Resolution StudyApr 22 2010Apr 27 2010We study resolution effects in numerical simulations of gas-rich and gas-poor major mergers, and show that the formation of slowly-rotating elliptical galaxies often requires a resolution that is beyond the present-day standards to be properly modelled. ... More
Connection between dynamically derived IMF normalisation and stellar population parametersAug 14 2014We report on empirical trends between the dynamically determined stellar initial mass function (IMF) and stellar population properties for a complete, volume-limited sample of 260 early-type galaxies from the Atlas3D project. We study trends between our ... More
The ATLAS3D Project-- VIII: Modelling the Formation and Evolution of Fast and Slow Rotator Early-Type Galaxies within $Λ$CDMJul 25 2011We propose a simple model for the origin of fast and slow rotator early-type galaxies (ETG) within the hierarchical $\Lambda$CDM scenario, that is based on the assumption that the mass fraction of stellar discs in ETGs is a proxy for the specific angular ... More
The Atlas3D project - X. On the origin of the molecular and ionised gas in early-type galaxiesJun 30 2011We make use of interferometric CO and HI observations, and optical integral-field spectroscopy to probe the origin of the molecular and ionised interstellar medium (ISM) in local early-type galaxies (ETGs). We find that 36\pm5% of our sample of fast rotating ... More
The Atlas3D project - VII. A new look at the morphology of nearby galaxies: the kinematic morphology-density relationApr 18 2011We look at the morphology of fast and slow rotator early-type galaxies. Edge-on fast rotators are lenticular galaxies. They appear like spiral galaxies with the gas and dust removed, and in some cases are flat ellipticals with disky isophotes. Fast rotators ... More
The Atlas3D project - V. The CO Tully-Fisher relation of early-type galaxiesFeb 23 2011We demonstrate here using both single-dish and interferometric observations that CO molecules are an excellent kinematic tracer, even in high-mass galaxies, allowing us to investigate for the first time the CO Tully-Fisher relation of early-type galaxies. ... More
Development of a proton Computed Tomography (pCT) scanner at NIUDec 13 2013We describe the development of a proton Computed Tomography (pCT) scanner at Northern Illinois University (NIU) in collaboration with Fermilab and Delhi University. This paper provides an overview of major components of the scanner and a detailed description ... More
The Atlas3D project - XX. Mass-size and mass-sigma distributions of early-type galaxies: bulge fraction drives kinematics, mass-to-light ratio, molecular gas fraction and stellar initial mass functionAug 17 2012Apr 15 2013We study the (M,sigma) and (M,Re) projections of the thin Mass Plane (MP) (M,sigma,Re) which describes the distribution of the galaxy population. The distribution of galaxy properties on the MP is characterized by: (i) a zone of exclusion described by ... More
The ATLAS3D Project - XXVIII. Dynamically-driven star formation suppression in early-type galaxiesMar 19 2014We present measurements of the star formation rate (SFR) in the early-type galaxies (ETGs) of the ATLAS3D sample, based on Wide-field Infrared Survey Explorer (WISE) 22um and Galaxy Evolution Explorer (GALEX) far-ultraviolet emission. We combine these ... More
The Atlas3D project - XXVI. HI discs in real and simulated fast and slow rotatorsJan 14 2014One quarter of all nearby early-type galaxies (ETGs) outside Virgo host a disc/ring of HI with size from a few to tens of kpc and mass up to ~1e+9 solar masses. Here we investigate whether this HI is related to the presence of a stellar disc within the ... More
The ATLAS3D project - XVII. Linking photometric and kinematic signatures of stellar discs in early-type galaxiesOct 30 2012Nov 13 2012[Abridged] We analyse the morphological structures in galaxies of the ATLAS3D sample by fitting a single Sersic profile and decomposing all non-barred objects (180 of 260 objects) in two components parameterised by an exponential and a general Sersic ... More
The Atlas3D project - XII. Recovery of the mass-to-light ratio of simulated early-type barred galaxies with axisymmetric dynamical modelsJun 01 2012We investigate the accuracy in the recovery of the stellar dynamics of barred galaxies when using axisymmetric dynamical models. We do this by trying to recover the mass-to-light ratio (M/L) and the anisotropy of realistic galaxy simulations using the ... More
The Atlas3D Project -- XI. Dense molecular gas properties of CO-luminous early-type galaxiesDec 15 2011Surveying eighteen 12CO-bright galaxies from the ATLAS3D early-type galaxy sample with the Institut de Radio Astronomie Millim\'etrique (IRAM) 30m telescope, we detect 13CO(1-0) and 13CO(2-1) in all eighteen galaxies, HCN(1-0) in 12/18 and HCO+(1-0) in ... More
The Atlas3D project - XIX. The hot-gas content of early-type galaxies: fast versus slow rotatorsJan 11 2013For early-type galaxies, the ability to sustain a corona of hot, X-ray emitting gas could have played a key role in quenching their star-formation history. Yet, it is still unclear what drives the precise amount of hot gas around these galaxies. By combining ... More
The Atlas3D project -- XIII. Mass and morphology of HI in early-type galaxies as a function of environmentNov 17 2011We present the Atlas3D HI survey of 166 nearby early-type galaxies (ETGs) down to M(HI)~10^7 M_sun. We detect HI in ~40% of all ETGs outside the Virgo cluster and in ~10% of all ETGs inside it. This demonstrates that it is common for non-cluster ETGs ... More
The ATLAS3D project - II. Morphologies, kinemetric features and alignment between photometric and kinematic axes of early-type galaxiesFeb 18 2011Mar 07 2011[Abridged] We use the ATLAS3D sample of 260 early-type galaxies (ETGs) to study the apparent kinematic misalignment angle, Psi, defined as the angle between the photometric and kinematic major axis. We find that 71% of nearby ETGs are strictly aligned ... More
The Atlas-3D project - IX. The merger origin of a fast and a slow rotating Early-Type Galaxy revealed with deep optical imaging: first resultsMay 27 2011The mass assembly of galaxies leaves imprints in their outskirts, such as shells and tidal tails. The frequency and properties of such fine structures depend on the main acting mechanisms - secular evolution, minor or major mergers - and on the age of ... More
Investigating the merger origin of Early-Type Galaxies using ultra-deep optical imagesFeb 04 2011The mass assembly of galaxies leaves various imprints on their surroundings, such as shells, streams and tidal tails. The frequency and properties of these fine structures depend on the mechanism driving the mass assembly: e.g. a monolithic collapse, ... More
NGC1266 as a Local Candidate for Rapid Cessation of Star FormationNov 25 2013Dec 03 2013We present new Spectrographic Areal Unit for Research on Optical Nebulae (SAURON) integral-field spectroscopy and Swift Ultraviolet Optical Telescope (UVOT) observations of molecular outflow host galaxy NGC 1266 that indicate NGC 1266 has experienced ... More
The ATLAS$^{\rm{3D}}$ project - XXV: Two-dimensional kinematic analysis of simulated galaxies and the cosmological origin of fast and slow rotatorsNov 01 2013Nov 05 2013We present a detailed two-dimensional stellar dynamical analysis of a sample of 44 cosmological hydrodynamical simulations of individual central galaxies and their satellites. Kinematic maps of the stellar line-of-sight velocity, velocity dispersion, ... More
The ATLAS3D project - XXII. Low-efficiency star formation in early-type galaxies: hydrodynamic models and observationsDec 11 2012We study the global efficiency of star formation in high resolution hydrodynamical simulations of gas discs embedded in isolated early-type and spiral galaxies. Despite using a universal local law to form stars in the simulations, we find that the early-type ... More
Discovery of a giant HI tail in the galaxy group HCG 44Sep 18 2012We report the discovery of a giant HI tail in the intra-group medium of HCG 44 as part of the Atlas3D survey. The tail is ~300 kpc long in projection and contains ~5x10^8 M_sun of HI. We detect no diffuse stellar light at the location of the tail down ... More
An HI view of the on-going assembly of early-type galaxies: present and future observationsDec 16 2009Dec 17 2009We present a preliminary analysis of the HI properties of early-type galaxies in the ATLAS3D sample. Using WSRT data for ~100 galaxies outside the Virgo cluster and data from the Alfalfa project for galaxies inside Virgo, we discuss the dependence of ... More
Discovery of an AGN-Driven Molecular Outflow in the Local Early-Type Galaxy NGC 1266Apr 12 2011We report the discovery of a powerful molecular wind from the nucleus of the non-interacting nearby S0 field galaxy NGC 1266. The single-dish CO profile exhibits emission to +/- 400 km/s and requires a nested Gaussian fit to be properly described. Interferometric ... More
New Eco-gas mixtures for the Extreme Energy Events MRPCs: results and plansJun 11 2018The Extreme Energy Events observatory is an extended muon telescope array, covering more than 10 degrees both in latitude and longitude. Its 59 muon telescopes are equipped with tracking detectors based on Multigap Resistive Plate Chamber technology with ... More
Development of a proton Computed Tomography Detector SystemOct 01 2015Computer tomography is one of the most promising new methods to image abnormal tissues inside the human body. Tomography is also used to position the patient accurately before radiation therapy. Hadron therapy for treating cancer has become one of the ... More
A New Proton CT ScannerAug 29 2014Jan 04 2016The design, construction, and preliminary testing of a second generation proton CT scanner is presented. All current treatment planning systems at proton therapy centers use X-ray CT as the primary imaging modality for treatment planning to calculate ... More
New Eco-gas mixtures for the Extreme Energy Events MRPCs: results and plansJun 11 2018May 22 2019The Extreme Energy Events observatory is an extended muon telescope array, covering more than 10 degrees both in latitude and longitude. Its 59 muon telescopes are equipped with tracking detectors based on Multigap Resistive Plate Chamber technology with ... More
First results from the upgrade of the Extreme Energy Events experimentJun 11 2018The Extreme Energy Events (EEE) experiment is the largest system in the world completely implemented with Multigap Resistive Plate Chambers (MRPCs). Presently, it consists of a network of 59 muon telescopes, each made of 3 MRPCs, devoted to the study ... More
Performance of the Multigap Resistive Plate Chambers of the Extreme Energy Events ProjectJun 11 2018The muon telescopes of the Extreme Energy Events (EEE) Project are made of three Multigap Resistive Plate Chambers (MRPC). The EEE array is composed, so far, of 59 telescopes and is organized in clusters and single telescope stations distributed all over ... More
The Extreme Energy Events experiment: an overview of the telescopes performanceMay 10 2018Multigap Resistive Plate Chambers (MRPC). The EEE network is composed, so far, of 53 telescopes, each made of three MRPC detectors; it is organized in clusters and single telescope stations distributed all over the Italian territory and installed in High ... More
Expression of Interest for Evolution of the Mu2e ExperimentFeb 07 2018We propose an evolution of the Mu2e experiment, called Mu2e-II, that would leverage advances in detector technology and utilize the increased proton intensity provided by the Fermilab PIP-II upgrade to improve the sensitivity for neutrinoless muon-to-electron ... More
Mu2e Technical Design ReportJan 21 2015Mar 16 2015The Mu2e experiment at Fermilab will search for charged lepton flavor violation via the coherent conversion process mu- N --> e- N with a sensitivity approximately four orders of magnitude better than the current world's best limits for this process. ... More