cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Vulnerabilities of Massive MIMO Systems Against Pilot Contamination Attacks
Creators: name: Akgun, Berk
name: Krunz, Marwan
name: Koyluoglu, O. Ozan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider a single-cell massive MIMO system in which a base station (BS) with a large number of antennas transmits simultaneously to several single-antenna users in the presence of an attacker.The BS acquires the channel state information (CSI) based on uplink pilot transmissions. In this work, we demonstrate the vulnerability of CSI estimation phase to malicious attacks. For that purpose, we study two attack models. In the first model, the attacker aims at minimizing the sum-rate of downlink transmissions by contaminating the uplink pilots. In the second model, the attacker exploits its in-band full-duplex capabilities to generate jamming signals in both the CSI estimation and data transmission phases. We study these attacks under two downlink power allocation strategies when the attacker knows and does not know the locations of the BS and users. The formulated problems are solved using stochastic optimization, Lagrangian minimization, and game-theoretic methods. A closed-form solution for a special case of the problem is obtained. Furthermore, we analyze the achievable individual secrecy rates under a pilot contamination attack, and provide an upper bound on these rates. Our results indicate that the proposed attacks degrade the throughput of a massive MIMO system by more than half.
Dal principio di precauzione al principio di preoccupazione. Il riconoscimento emozionale nell'AI Act
Creators: name: Caso, Roberto
Publisher: name: Zenodo
Year: 2025
Subjects: Emotion recognition
European Union Artificial Intelligence Act
AI Act

description: La disciplina del riconoscimento emozionale nell'AI Act dell'Unione Europea segnala un pericoloso ribaltamento del principio di precauzione. Nonostante la premessa contenuta nel considerando 44 - "sussistono serie preoccupazioni in merito alla base scientifica dei sistemi di IA volti a identificare o inferire emozioni" -, il riconosciemento emozionale è vietato solo in fattispecie molto delimitate. Tale scelta politica costituisce una delle tante spie del progressivo indeblimento, anche nell'Unione Eurpea, dei pilastri di una società democratica.
One-Loop Holographic Weyl Anomaly in Six Dimensions
Creators: name: Liu, James T.
name: McPeak, Brian
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute $\mathcal O(1)$ corrections to the holographic Weyl anomaly for six-dimensional $\mathcal N=(1,0)$ and $(2,0)$ theories using the functional Schrödinger method that is conjectured to work for supersymmetric theories on Ricci-flat backgrounds. We show that these corrections vanish for long representations of the $\mathcal N=(1,0)$ theory, and we obtain an expression for $δ(c-a)$ for short representations with maximum spin two. We also confirm that the one-loop corrections to the $\mathcal N=(2,0)$ M5-brane theory are equal and opposite to the anomaly for the free tensor multiplet. Finally, we discuss the possibility of extending the results to encompass multiplets with spins greater than two.
description: 28 pages
Slow-roll corrections to inflaton fluctuations on a brane
Creators: name: Koyama, Kazuya
name: Mizuno, Shuntaro
name: Wands, David
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Quantum fluctuations of an inflaton field, slow-rolling during inflation are coupled to metric fluctuations. In conventional four dimensional cosmology one can calculate the effect of scalar metric perturbations as slow-roll corrections to the evolution of a massless free field in de Sitter spacetime. This gives the well-known first-order corrections to the field perturbations after horizon-exit. If inflaton fluctuations on a four dimensional brane embedded in a five dimensional bulk spacetime are studied to first-order in slow-roll then we recover the usual conserved curvature perturbation on super-horizon scales. But on small scales, at high energies, we find that the coupling to the bulk metric perturbations cannot be neglected, leading to a modified amplitude of vacuum oscillations on small scales. This is a large effect which casts doubt on the reliability of the usual calculation of inflaton fluctuations on the brane neglecting their gravitational coupling.
description: 18 pages, 4 figures
A metric approach to a class of doubly nonlinear evolution equations and applications
Creators: name: Rossi, Riccarda
name: Mielke, Alexander
name: Savaré, Giuseppe
Publisher: name: Weierstrass Institute
Year: 2007
Subjects: subject: Doubly nonlinear equations
subject: analysis in metric spaces
subject: existence and approximation results
subject: 35K55
subject: 49Q20
subject: 58E99

description: This paper deals with the analysis of a class of doubly nonlinear evolution equations in the framework of a general metric space. We propose for such equations a suitable metric formulation (which in fact extends the notion of Curve of Maximal Slope for gradient flows in metric spaces, see [5]), and prove the existence of solutions for the related Cauchy problem by means of an approximation scheme by time discretization. Then, we apply our results to obtain the existence of solutions to abstract doubly nonlinear equations in reflexive Banach spaces. The metric approach is also exploited to analyze a class of evolution equations in $L^1$ spaces.
Sivers and $\cos 2ϕ$ Asymmetries in Semi-inclusive Deep Inelastic Scattering in Light-front Holographic Model
Creators: name: Maji, Tanmay
name: Chakrabarti, Dipankar
name: Mukherjee, Asmita
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The spin asymmetries in SIDIS associated with $T$-odd TMDs are presented in a light-front quark-diquark model of a proton. To incorporate the effects of the final state interaction, the light front wave functions are modified to have a phase factor which is essential to have Sivers or Boer-Mulders functions. The Sivers and Boer-Mulder asymmetries are compared with HERMES and COMPASS data.
description: 24 pages, 09 figures
Superconducting tunable flux qubit with direct readout scheme
Creators: name: Chiarello, Fabio
name: Carelli, Pasquale
name: Castellano, Maria Gabriella
name: Cosmelli, Carlo
name: Gangemi, Lorenzo
name: Leoni, Roberto
name: Poletto, Stefano
name: Simeone, Daniela
name: Torrioli, Guido
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We describe a simple and efficient scheme for the readout of a tunable flux qubit, and present preliminary experimental tests for the preparation, manipulation and final readout of the qubit state, performed in incoherent regime at liquid Helium temperature. The tunable flux qubit is realized by a double SQUID with an extra Josephson junction inserted in the large superconducting loop, and the readout is performed by applying a current ramp to the junction and recording the value for which there is a voltage response, depending on the qubit state. This preliminary work indicates the feasibility and efficiency of the scheme.
description: 10 pages, 5 figures
Good Question! Statistical Ranking for Question Generation
Creators: name: Heilman, Michael
name: Smith, Noah A.
Publisher: name: Carnegie Mellon University
Year: 2010
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: We address the challenge of automatically generating questions from reading materials for educational practice and assessment. Our approach is to overgenerate questions, then rank them. We use manually written rules to perform a sequence of general purpose syntactic transformations (e.g., subject-auxiliary inversion) to turn declarative sentences into questions. These questions are then ranked by a logistic regression model trained on a small, tailored dataset consisting of labeled output from our system. Experimental results show that ranking nearly doubles the percentage of questions rated as acceptable by annotators, from 27% of all questions to 52% of the top ranked 20% of questions.
Anomalous Radio-Wave Scattering from Interstellar Plasma Structures
Creators: name: Cordes, J. M.
name: Lazio, T. Joseph W.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper considers scattering screens that have arbitrary spatial variations of scattering strength transverse to the line of sight, including screens that are spatially well confined, such as disks and filaments. We calculate the scattered image of a point source and the observed pulse shape of a scattered impulse. The consequences of screen confinement include: (1) Source image shapes that are determined by the physical extent of the screen rather than by the shapes of much-smaller diffracting microirregularities. These include image elongations and orientations that are frequency dependent. (2) Variation with frequency of angular broadening that is much weaker than the trademark ν^{-2} scaling law (for a cold, unmagnetized plasma), including frequency-independent cases; and (3) Similar departure of the pulse broadening time from the usually expected ν^{-4} scaling law. We briefly discuss applications that include scattering of pulses from the Crab pulsar by filaments in the Crab Nebula; image asymmetries from Galactic scattering of the sources Cyg X-3, Sgr A*, and NGC 6334B; and scattering of background active galactic nuclei by intervening galaxies. We also address the consequences for inferences about the shape of the wavenumber spectrum of electron density irregularities, which depend on scaling laws for the image size and the pulse broadening. Future low-frequency (< 100 MHz) array observations will also be strongly affected by the Galactic structure of scattering material. Our formalism is derived in the context of radio scattering by plasma density fluctuations. It is also applicable to optical, UV and X-ray scattering by grains in the interstellar medium.
description: 21 pages, LaTeX2e with AASTeX-4.0, 6 PostScript figures, accepted by ApJ, revised version has minor changes to respond to referee comments and suggestions
Regularity up to the boundary for nonlinear elliptic systems arising in time-incremental infinitesimal elasto-plasticity
Creators: name: Knees, Dorothee
name: Neff, Patrizio
Publisher: name: Weierstrass Institute
Year: 2007
Subjects: subject: Polar materials
subject: perfect plasticity
subject: higher global regularity
subject: quasilinear elliptic systems
subject: error estimates
subject: time-increments
subject: 35B65
subject: 74C05
subject: 49N60
subject: 74A35
subject: 74G40

description: In this note we investigate the question of higher regularity up to the boundary for quasilinear elliptic systems which origin from the time-discretization of models from infinitesimal elasto-plasticity. Our main focus lies on an elasto-plastic Cosserat model. More specifically we show that the time discretization renders $H^2$-regularity of the displacement and $H^1$-regularity for the symmetric plastic strain $varepsilon_p$ up to the boundary provided the plastic strain of the previous time step is in $H^1$, as well. This result contrasts with classical Hencky and Prandtl-Reuss formulations where it is known not to hold due to the occurrence of slip lines and shear bands. Similar regularity statements are obtained for other regularizations of ideal plasticity like viscosity or isotropic hardening. In the first part we recall the time continuous Cosserat elasto-plasticity problem, provide the update functional for one time step and show various preliminary results for the update functional (Legendre-Hadamard/monotonicity). Using non standard difference quotient techniques we are able to show the higher global regularity. Higher regularity is crucial for qualitative statements of finite element convergence. As a result we may obtain estimates linear in the mesh-width $h$ in error estimates.
Linear stability analysis of a sharp-interface model for dewetting thin films
Creators: name: King, John R.
name: Münch, Andreas
name: Wagner, Barbara
Publisher: name: Weierstrass Institute
Year: 2007
Subjects: subject: sharp-interface model
subject: slippage
subject: stability
subject: dewetting
subject: fingering
subject: Lubrication models
subject: rim
subject: 76M45
subject: 34B15
subject: 65M06
subject: 68.15.+e

description: The topic of this study concerns the stability of the three-phase contact-line of a dewetting thin liquid film on a hydrophobised substrate driven by van der Waals forces. The role of slippage in the emerging instability at the three-phase contact-line is studied by deriving a sharp-interface model for the dewetting thin film via matched asymptotic expansions. This allows for a derivation of travelling waves and their linear stability via eigenmode analysis. In contrast to the dispersion relations typically encountered for the finger-instabilty, where the dependence of the growth rate on the wave number is quadratic, here it is linear. Using the separation of time scales of the slowly growing rim of the dewetting film and time scale on which the contact line destabilises, the sharp-interface results are compared to earlier results for the full lubrication model and good agreement for the most unstable modes is obtained.
Massive gauge field theory without Higgs mechanism
Creators: name: Su, Jun-Chen
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is argued that the massive gauge field theory without the Higgs mechanism can well be set up on the gauge-invariance principle based on the viewpoint that a massive gauge field must be viewed as a constrained system and the Lorentz condition, as a constraint, must be introduced from the beginning and imposed on the Yang-Mills Lagrangian. The quantum theory for the massive gauge fieldis may perfectly be established by the quantization performed in the Hamiltonian or the Lagrangian path-integral formalism by means of the Lagrange undetermined multiplier method and shows good renormalizability and unitarity.
Generative Models of Monolingual and Bilingual Gappy Patterns
Creators: name: Gimpel, Kevin
name: Smith, Noah A.
Publisher: name: Carnegie Mellon University
Year: 2011
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: A growing body of machine translation research aims to exploit lexical patterns (e.g., ngrams and phrase pairs) with gaps (Simard et al., 2005; Chiang, 2005; Xiong et al., 2011). Typically, these “gappy patterns” are discovered using heuristics based on word alignments or local statistics such as mutual information. In this paper, we develop generative models of monolingual and parallel text that build sentences using gappy patterns of arbitrary length and with arbitrarily many gaps. We exploit Bayesian nonparametrics and collapsed Gibbs sampling to discover salient patterns in a corpus. We evaluate the patterns qualitatively and also add them as features to an MT system, reporting promising preliminary results.
Ferramenta da Terapia Cognitivo-Comportamental (TCC): Escala de Avaliação de Confiança Interpessoal (IAC)
Creators: name: Brandl, Edenilson
Publisher: name: Zenodo
Year: 2024
Subjects: Ferramenta da Terapia Cognitivo-Comportamental (TCC)
Terapia Cognitivo-Comportamental (TCC)
Escala de Avaliação de Confiança Interpessoal (IAC)
Enciclopédia da Conscienciologia

description: Definologia: A Escala de Avaliação de Confiança Interpessoal (IAC) é uma ferramenta de medida utilizada na Terapia Cognitivo-Comportamental (TCC) para avaliar o nível de confiança que um indivíduo possui em suas relações interpessoais, considerando aspectos cognitivos, emocionais e comportamentais.
Large time asymptotics of growth models on space-like paths I: PushASEP
Creators: name: Borodin, Alexei
name: Ferrari, Patrik
Publisher: name: Weierstrass Institute
Year: 2007
Subjects: subject: Simple exclusion process
subject: space-like universality
subject: KPZ class
subject: Airy processes
subject: 82C22
subject: 60K35
subject: 15A52

description: We consider a new interacting particle system on the one-dimensional lattice that interpolates between TASEP and Toom's model: A particle cannot jump to the right if the neighboring site is occupied, and when jumping to the left it simply pushes all the neighbors that block its way. We prove that for flat and step initial conditions, the large time fluctuations of the height function of the associated growth model along any space-like path are described by the Airy$_1$ and Airy$_2$ processes. This includes fluctuations of the height profile for a fixed time and fluctuations of a tagged particle's trajectory as special cases.
Impact of size, shape and composition on piezoelectric effects and the electronic properties of InGaAs/GaAs quantum dots
Creators: name: Schliwa, Andrei
name: Winkelnkemper, Momme
name: Bimberg, Dieter
Publisher: name: Weierstrass Institute
Year: 2007
Subjects: subject: Electronic properties
subject: Quantum dots
subject: Piezolectricity

description: The strain fields in and around self-organized In(Ga)As/GaAs quantum dots (QD) sensitively depend on QD geometry, average InGaAs composition and the In/Ga distribution profile. Piezoelectric fields of varying size are one result of these strain fields. We study systematically a large variety of realistic QD geometries and composition profiles, and calculate the linear and quadratic parts of the piezoelectric field. The balance of the two orders depends strongly on the QD shape and composition. For pyramidal InAs QDs with sharp interfaces a strong dominance of the second order fields is found. Upon annealing the first order terms become dominant, resulting in a reordering of the electron p- and d-states and a reorientation of the hole wavefunctions.
Thermally driven phase transformation in shape-memory alloys
Creators: name: Mielke, Alexander
name: Petrov, Adrien
Publisher: name: Weierstrass Institute
Year: 2007
Subjects: subject: Shape-memory materials
subject: doubly nonlinear differential inclusion
subject: rate-independent processes
subject: energetic formulation
subject: temperature-induced phase transformation
subject: 49J40
subject: 74C05
subject: 74F05
subject: 74M05
subject: 74N30

description: This paper analyzes a model for phase transformation in shape-memory alloys induced by temperature changes and by mechanical loading. We assume that the temperature is prescribed and formulate the problem within the framework of the energetic theory of rate-independent processes. Existence and uniqueness results are proved.
Frame-Semantic Parsing
Creators: name: Dipanjan  Das
name: Desai  Chen
name: Martins, Andre F.T.
name: Schneider, Nathan
name: Smith, Noah A.
Publisher: name: Carnegie Mellon University
Year: 2014
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: © 2014 Association for Computational Linguistics The version of record is available online at http://dx.doi.org/10.1162/COLI_a_00163
Adaptive goodness-of-fit tests based on signed ranks
Creators: name: Rohde, Angelika
Publisher: name: Weierstrass Institute
Year: 2008
Subjects: subject: Exact multiple testing
subject: exponential inequality
subject: multiscale statistic
subject: relative asymptotic efficiency
subject: signed ranks
subject: sharp asymptotic adaptivity
subject: 62G10
subject: 62G20
subject: 62G35

description: Within the nonparametric regression model with unknown regression function $l$ and independent, symmetric errors, a new multiscale signed rank statistic is introduced and a conditional multiple test of the simple hypothesis $l = 0$ against a nonparametric alternative is proposed. This test is distribution-free and exact for finite samples even in the heteroscedastic case. It adapts in a certain sense to the unknown smoothness of the regression function under the alternative, and it is uniformly consistent against alternatives whose sup-norm tends to zero at the fastest possible rate. The test is shown to be asymptotically optimal in two senses: It is rate-optimal adaptive against Hölder classes. Furthermore, its relative asymptotic efficiency with respect to an asymptotically minimax optimal test under sup-norm loss is close to one in case of homoscedastic Gaussian errors within a broad range of Hölder classes simultaneously.
The richness of compact radio sources in NGC 6334D to F
Creators: name: Medina, S. -N. X.
name: Dzib, S. A.
name: Tapia, M.
name: Rodríguez, L. F.
name: Loinard, L.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The presence and properties of compact radio sources embedded in massive star-forming regions can reveal important physical properties about these regions and the processes occurring within them. The NGC 6334 complex, a massive star-forming region, has been studied extensively. Nevertheless, none of these studies has focused in its content in compact radio sources. We report on a systematic census of the compact radio sources toward NGC 6334, and their characteristics. This will be used to try and define their very nature. We use VLA C band (4-8 GHz) archive data with 0.36" of spatial resolution and noise level of 50 uJy/bm to carry out a systematic search for compact radio sources within NGC 6334. We also search for infrared counterparts to provide some constraints on the nature of the detected radio sources. A total of 83 compact sources and three slightly resolved sources were detected. Most of them are here reported for the first time. We found that 29 of these 86 sources have infrared counterparts and three are highly variable. Region D contains 18 of these sources. The compact source toward the center, in projection, of region E is also detected. From statistical analyses, we suggest that the 83 reported compact sources are real and most of them are related to NGC 6334 itself. A stellar nature for 27 of them is confirmed by their IR emission. Compared with Orion, region D suffers a deficit of compact radio sources. The infrared nebulosities around two of the slightly resolved sources are suggested to be warm dust, and we argue that the associated radio sources trace free-free emission from ionized material. We confirm the thermal radio emission of the compact source in region E. However, its detection at infrared wavelengths implies that it is located in the foreground of the molecular cloud. Three strongly variable sources are suggested to be magnetically active young stars.
description: 16 pages, 11 figures, 4 tables, accepted in Astronomy and Astrophysics
Regression methods for stochastic control problems and their convergence analysis
Creators: name: Belomestny, Denis
name: Kolodko, Anastasia
name: Schoenmakers, John G. M.
Publisher: name: Weierstrass Institute
Year: 2009
Subjects: subject: optimal control
subject: dynamic programming
subject: regression estimator
subject: Monte Carlo simulation
subject: 90C40
subject: 90-08
subject: 91B28

description: In this paper we develop several regression algorithms for solving general stochastic optimal control problems via Monte Carlo. This type of algorithms is particulary useful for problems with a high-dimensional state space and complex dependence structure of the underlying Markov process with respect to some control. The main idea behind the algorithms is to simulate a set of trajectories under some reference measure and to use the Bellman principle combined with fast methods for approximating conditional expectations and functional optimization. Theoretical properties of the presented algorithms are investigated and the convergence to the optimal solution is proved under mild assumptions. Finally, we present numerical results for the problem of pricing a high-dimensional Bermudan basket option under transaction costs in a financial market with a large investor.
Non equilibrium current fluctuations in stochastic lattice gases
Creators: name: Bertini, L.
name: De Sole, A.
name: Gabrielli, D.
name: Jona-Lasinio, G.
name: Landim, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study current fluctuations in lattice gases in the macroscopic limit extending the dynamic approach for density fluctuations developed in previous articles. More precisely, we establish a large deviation principle for a space-time fluctuation $j$ of the empirical current with a rate functional $\mc I (j)$. We then estimate the probability of a fluctuation of the average current over a large time interval; this probability can be obtained by solving a variational problem for the functional $\mc I $. We discuss several possible scenarios, interpreted as dynamical phase transitions, for this variational problem. They actually occur in specific models. We finally discuss the time reversal properties of $\mc I$ and derive a fluctuation relationship akin to the Gallavotti-Cohen theorem for the entropy production.
description: 36 Pages, No figure
A Color Analysis of the NICMOS Parallel Image Archive
Creators: name: Corbin, Michael R.
name: O'Neil, Earl
name: Thompson, Rodger I.
name: Rieke, Marcia J.
name: Schneider, Glenn
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a photometric analysis of all high Galactic lattitude (|b| > 20d) broad-band parallel images taken by the Near Infrared Camera and Multi-Object Spectrometer (NICMOS) instrument during its initial lifetime in HST Cycle 7. These images, taken through the F110W and F160W filters, reach a mean 3-sigma limiting magnitude of approximately 22 in both bands, and cover a total area of approximately 92 square arcminutes. The reddest of the 358 galaxies detected have F110W-F160W colors and F160W magnitudes consistent with being a combination of both dusty star-forming and evolved early-type galaxies at 1 < z < 2. The surface density of these galaxies is comparable to that of the population of Extremely Red Objects (EROs) discovered in ground-based surveys (~ 100 deg-2), suggesting that EROs also represent a combination of both galaxy types in this redshift range. Roughly 10% of the detected galaxies appear to be blue compact dwarf galaxies at z < 1, a result consistent with studies of the HST Medium Deep Survey Fields. The surface density of these objects down to magnitude of 22 in F160W is ~ 300 deg-2. None of the 681 point sources detected have F110W-F160W colors matching those expected for QSOs whose continua have been significantly reddened by internal dust. Our data limit the surface density of such QSOs to be < 50 deg-2 down the mean limiting magnitudes of the sample images. Since the surface density of QSOs detected on the basis of ultraviolet excess in optical surveys to comparable depth is ~ 100 deg-2, this argues against the suggestion that dust-reddened QSOs comprise the undetected majority of the QSO population. The F110W-F160W color can also be used to identify unreddened QSOs at z > 8, but we find no such candidates. This is consistent with the evidence that QSO space density declines sharply at z > 5.
description: To appear in the September 2000 Astronomical Journal
Additional file 5 of Estimation of losses of quality-adjusted life expectancy attributed to the combination of cognitive impairment and multimorbidity among Chinese adults aged 45 years and older
Creators: name: Xiong, Suting
name: Liu, Siyuan
name: Qiao, Yanan
name: He, Dingliu
name: Ke, Chaofu
name: Shen, Yueping
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Biological Sciences not elsewhere classified
Science Policy

description: Additional file 5: Appendix Table 5. Losses of QALE (all participants without cognitive information were classified into the low cognition level) at the population level based on the sensitivity analysis (with the corresponding 95% confidence intervals).
Effective spin-glass Hamiltonian for the anomalous dynamics of the HMF model
Creators: name: Pluchino, Alessandro
name: Latora, Vito
name: Rapisarda, Andrea
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss an effective spin-glass Hamiltonian which can be used to study the glassy-like dynamics observed in the metastable states of the Hamiltonian Mean Field (HMF) model. By means of the Replica formalism, we were able to find a self-consistent equation for the glassy order parameter which reproduces, in a restricted energy region below the phase transition, the microcanonical simulations for the polarization order parameter recently introducted in the HMF model.
description: Revtex, 9 pages, 2 figures. New revised version revised according to the referee reports
Tensor product approximations of high dimensional potentials
Creators: name: Lanzara, Flavia
name: Maz'ya, Vladimir
name: Schmidt, Gunther
Publisher: name: Weierstrass Institute
Year: 2009
Subjects: subject: Cubature of integral operators
subject: multivariate approximation
subject: tensor product approximation
subject: 41A30
subject: 65D15
subject: 41A63
subject: 41A25

description: The paper is devoted to the efficient computation of high-order cubature formulas for volume potentials obtained within the framework of approximate approximations. We combine this approach with modern methods of structured tensor product approximations. Instead of performing high-dimensional discrete convolutions the cubature of the potentials can be reduced to a certain number of one-dimensional convolutions leading to a considerable reduction of computing resources. We propose one-dimensional integral representions of high-order cubature formulas for n-dimensional harmonic and Yukawa potentials, which allow low rank tensor product approximations.
Formulating Simple Structured Queries using Temporal and Distributional Cues in Patents
Creators: name: Zhao, Le
name: Callan, Jamie
Publisher: name: Carnegie Mellon University
Year: 2009
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Patent prior art retrieval aims to find related publications, especially patents, which may invalidate the patent. The task exhibits its own characteristic because of the possible use of a whole patent as a query. This work focuses on the use of date fields and content fields of the query patent to formulate effective structured queries. Retrieval is performed on the collection of patents which also share the same structure as the query patent, mainly priority dates, application date, publication date and content fields. Unsurprisingly, results show that filtering using date information improves retrieval significantly. However, results also show that a careful choice of the date filter is important, given the multiple date fields existent in a patent. The actual ranking query is constructed based on word distributions of title, claims and content fields of the query patent. The overall MAP of this citation finding task is still in the lower 0.1 range. An error analysis focusing on the lower performing topics finds that the citation finding task (given publication recommend citations, which is a very similar setup as this year’s prior art evaluation) can be very different from the prior art task (finding patents that invalidates the query patent). It raises the concern that just the citations included in query patents can be a biased and incomplete set of relevance judgements for the prior art task.
Diffuse gamma-ray emission in the vicinity of young star cluster Westerlund 2
Creators: name: Yang, Rui-zhi
name: Wilhelmi, Emma de Oña
name: Aharonian, Felix
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the results of our analysis of the publicly available data obtained by the Large Area Telescope (LAT) on board of the Fermi satellite towards the direction of the young massive star cluster Westerlund 2. We found significant extended gamma-ray emission in the vicinity of Westerlund 2 with a hard power-law energy spectrum extending from 1 GeV to 250 GeV with a photon index of 2.0 +/- 0.1. We argue that amongst several alternatives, the luminous stars in Westerlund 2 are likely sites of acceleration of particles responsible for the diffuse gamma-ray emission of the surrounding interstellar medium. In particular, the young star cluster Westerlund 2 can provide sufficient non-thermal energy to account for the gamma-ray emission. In this scenario, since the gamma-ray production region is significantly larger than the area occupied by the star cluster, we conclude that the gamma-ray production is caused by hadronic interactions of the accelerated protons and nuclei with the ambient gas. In that case, the total energy budget in relativistic particles is estimated of the order of 1e50 erg.
description: submitted to A&A
Formalizing Expert Knowledge for Developing Accurate Speech Recognizers
Creators: name: Anuj  Kumar
name: Metze, Florian
name: Wenyi  Wang
name: Kam, Matthew
Publisher: name: Carnegie Mellon University
Year: 2013
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: The expertise required to develop a speech recognition system with reasonable accuracy for a given task is quite significant, and precludes most non-speech experts from integrating speech recognition into their own research. While an initial baseline recognizer may readily be available or relatively simple to acquire, identifying the necessary accuracy optimizations require an expert understanding of the application domain as well as significant experience in building speech recognition systems. This paper describes our efforts and experiments in formalizing knowledge from speech experts that would help novices by automatically analyzing an acoustic context and recommending appropriate techniques for accuracy gains. Through two recognition experiments, we show that it is possible to model experts' understanding of developing accurate speech recognition systems in a rule-based knowledge base, and that this knowledge base can accurately predict successful optimization techniques for previously seen acoustic situations, both in seen and unseen datasets. We argue that such a knowledge base, once fully developed, will be of tremendous value for boosting the use of speech recognition in research and development on non-mainstream languages and acoustic conditions.
Unitarity in the Presence of Closed Timelike Curves
Creators: name: Cornalba, Lorenzo
name: Costa, Miguel S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We conjecture that, in certain cases, quantum dynamics is consistent in the presence of closed timelike curves. We consider time dependent orbifolds of three dimensional Minkowski space describing, in the limit of large AdS radius, BTZ black holes inside the horizon. Although perturbative unitarity fails, we show that, for discrete values of the gravitational coupling, particle propagation is consistent with unitarity. This quantization corresponds to the quantization of the black hole angular momentum, as expected from the dual CFT description. Note, however, that we recover this result by analyzing the physics inside the horizon and near the singularity. The spacetime under consideration has no AdS boundary, and we are therefore not using any assumption regarding a possible dual formulation. We perform the computation at very low energies, where string effects are irrelevant and interactions are dominated by graviton exchange in the eikonal regime. We probe the non-causal structure of space-time to leading order, but work to all orders in the gravitational coupling.
description: 43 pages, 13 figures. Minor changes for journal submission. One added figure
Finding Recurrent Out-of-Vocabulary Words
Creators: name: Qin, Long
name: Rudnicky, Alexander
Publisher: name: Carnegie Mellon University
Year: 2013
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Out-of-vocabulary (OOV) words can appear more than once in a conversation or over a period of time. Such multiple instances of the same OOV word provide valuable information for estimating the pronunciation or the part-of-speech (POS) tag of the word. But in a conventional OOV word detection system, each OOV word is recognized and treated individually. We therefore investigated how to identify recurrent OOV words in speech recognition. Specifically, we propose to cluster multiple instances of the same OOV word using a bottom-up approach. Phonetic, acoustic and contextual features were collected to measure the distance between OOV candidates. The experimental results show that the bottom-up clustering approach is very effective at detecting the recurrence of OOV words. We also found that the phonetic feature is better than the acoustic and contextual features, and the best performance is achieved when combining all features.
RXTE Studies of Long-Term X-ray Spectral Variations in 4U 1820-30
Creators: name: Bloser, P. F.
name: Grindlay, J. E.
name: Kaaret, P.
name: Zhang, W.
name: Smale, A. P.
name: Barret, D.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of detailed spectral studies of the ultra-compact low mass X-ray binary (LMXB) 4U 1820-30 carried out with the Rossi X-ray Timing Explorer (RXTE) during 1996-7. 4U 1820-30 is an ``atoll'' source X-ray burster (XRB) located in the globular cluster NGC 6624. It is known to have an 11 minute binary period and a ~176 day modulation in its 2--12 keV flux. Observations were made with the PCA and HEXTE instruments on RXTE at roughly one-month intervals to sample this long-term period and study flux-related spectral changes. There are clear correlations between our fitted spectral parameters and both the broad-band (2--50 keV) flux and the position in the color-color diagram, as described by the parameter S_a introduced by Mendez et al. (1999). In addition, we find a strong correlation between the position in the color-color diagram and the frequencies of the kilohertz quasi-periodic oscillations (kHz QPOs) reported by Zhang et al. (1998). This lends further support to the notion that evidence for the last stable orbit in the accretion disk of 4U 1820-30 has been observed. For a model consisting of Comptonization of cool photons by hot electrons plus an additional blackbody component, we report an abrupt change in the spectral parameters at the same accretion rate at which the kHz QPOs disappear. For a model consisting of a multicolor disk blackbody plus a cut-off power law, we find that the inner disk radius reaches a minimum at the same accretion rate at which the kHz QPO frequency saturates, as expected if the disk reaches the last stable orbit. Both models face theoretical and observational problems when interpreted physically for this system.
description: 39 pages, 11 figures, accepted to the Astrophysical Journal
Ferramenta da Psicanálise: Análise de Conflitos Familiares
Creators: name: Brandl, Edenilson
Publisher: name: Zenodo
Year: 2024
Subjects: Ferramenta da Psicanálise
Análise de Conflitos Familiares
Psicanálise
Enciclopédia da Conscienciologia

description: Definologia: A análise de conflitos familiares é uma ferramenta da Psicanálise utilizada para investigar e compreender os conflitos e dinâmicas presentes nas relações familiares, buscando identificar os processos inconscientes subjacentes que influenciam os padrões de interação e comunicação entre os membros da família.
Raman-modes of index-identified free-standing single-walled carbon nanotubes
Creators: name: Meyer, Jannik C.
name: Paillet, Matthieu
name: Michel, Thierry
name: Moreac, Alain
name: Neumann, Anita
name: Duesberg, Georg S.
name: Roth, Siegmar
name: Sauvajol, Jean-Louis
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Using electron diffraction on free-standing single-walled carbon nanotubes we have determined the structural indices (n,m) of tubes in the diameter range from 1.4 to 3nm. On the same free-standing tubes we have recorded Raman spectra of the tangential modes and the radial breathing mode. For the smaller diameters (1.4-1.7nm) these measurements confirm previously established radial breathing mode frequency versus diameter relations, and would be consistent with the theoretically predicted proportionality to the inverse diameter. However, for extending the relation to larger diameters, either a yet unexplained environmental constant has to be assumed, or the linear relation has to be abandoned.
description: 4 pages, 4 figures, +additional materials (select PostScript to obtain it)
Extracting deep bottleneck features using stacked auto-encoders
Creators: name: Gehring, Jonas
name: Yajie  Miao
name: Metze, Florian
name: Waibel, Alexander
Publisher: name: Carnegie Mellon University
Year: 2013
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: In this work, a novel training scheme for generating bottleneck features from deep neural networks is proposed. A stack of denoising auto-encoders is first trained in a layer-wise, unsupervised manner. Afterwards, the bottleneck layer and an additional layer are added and the whole network is fine-tuned to predict target phoneme states. We perform experiments on a Cantonese conversational telephone speech corpus and find that increasing the number of auto-encoders in the network produces more useful features, but requires pre-training, especially when little training data is available. Using more unlabeled data for pre-training only yields additional gains. Evaluations on larger datasets and on different system setups demonstrate the general applicability of our approach. In terms of word error rate, relative improvements of 9.2% (Cantonese, ML training), 9.3% (Tagalog, BMMI-SAT training), 12% (Tagalog, confusion network combinations with MFCCs), and 8.7% (Switchboard) are achieved.
From synchronization to Lyapunov exponents and back
Creators: name: Politi, Antonio
name: Ginelli, Francesco
name: Yanchuk, Serhiy
name: Maistrenko, Yuri
Publisher: name: Weierstrass Institute
Year: 2006
Subjects: subject: Lyapunov exponents
subject: synchronization
subject: 05.45.Xt
subject: 05.45.Ac

description: The goal of this paper is twofold. In the first part we discuss a general approach to determine Lyapunov exponents from ensemble- rather than time-averages. The approach passes through the identification of locally stable and unstable manifolds (the Lyapunov vectors), thereby revealing an analogy with generalized synchronization. The method is then applied to a periodically forced chaotic oscillator to show that the modulus of the Lyapunov exponent associated to the phase dynamics increases quadratically with the coupling strength and it is therefore different from zero already below the onset of phase-synchronization. The analytical calculations are carried out for a model, the generalized special flow, that we construct as a simplified version of the periodically forced Rössler oscillator.
Additional file 2 of Estimation of losses of quality-adjusted life expectancy attributed to the combination of cognitive impairment and multimorbidity among Chinese adults aged 45 years and older
Creators: name: Xiong, Suting
name: Liu, Siyuan
name: Qiao, Yanan
name: He, Dingliu
name: Ke, Chaofu
name: Shen, Yueping
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Biological Sciences not elsewhere classified
Science Policy

description: Additional file 2: Appendix Table 2. Losses of QALE at the individual level (with the corresponding 95% confidence intervals).
Finite-temperature form factors in the free Majorana theory
Creators: name: Doyon, Benjamin
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the large distance expansion of correlation functions in the free massive Majorana theory at finite temperature, alias the Ising field theory at zero magnetic field on a cylinder. We develop a method that mimics the spectral decomposition, or form factor expansion, of zero-temperature correlation functions, introducing the concept of "finite-temperature form factors". Our techniques are different from those of previous attempts in this subject. We show that an appropriate analytical continuation of finite-temperature form factors gives form factors in the quantization scheme on the circle. We show that finite-temperature form factor expansions are able to reproduce expansions in form factors on the circle. We calculate finite-temperature form factors of non-interacting fields (fields that are local with respect to the fundamental fermion field). We observe that they are given by a mixing of their zero-temperature form factors and of those of other fields of lower scaling dimension. We then calculate finite-temperature form factors of order and disorder fields. For this purpose, we derive the Riemann-Hilbert problem that completely specifies the set of finite-temperature form factors of general twist fields (order and disorder fields and their descendants). This Riemann-Hilbert problem is different from the zero-temperature one, and so are its solutions. Our results agree with the known form factors on the circle of order and disorder fields.
description: 40 pp.; v2: 42 pp., refs and acknowledgment added, typos corrected, description of general matrix elements corrected and extended; v3: 47 pp., appendix added
title: ÐÑÐ½Ð¾Ð²Ñ Ð¼ÐµÐ½ÐµÐ´Ð¶Ð¼ÐµÐ½ÑÐ°. Ð§. 1
title: ÑÑÐµÐ±Ð½Ð¾-ÑÐ¿ÑÐ°Ð²Ð¾ÑÐ½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: ÐÐ»ÑÑÐ¾Ð², ÐÐ»Ð°Ð´Ð¸Ð¼Ð¸Ñ
Publisher: name: [Ð¡ÐÐ±ÐÐ¢Ð£]
Year: 1994
Subjects: Ð¼ÐµÐ½ÐµÐ´Ð¶Ð¼ÐµÐ½Ñ
ÑÑÐµÐ±Ð½Ð¸ÐºÐ¸ Ð¸ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ Ð´Ð»Ñ Ð²ÑÐ·Ð¾Ð²

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