cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Herschel Virgo Cluster Survey XIV: transition-type dwarf galaxies in the Virgo cluster
Creators: name: De Looze, Ilse
name: Baes, Maarten
name: Boselli, Alessandro
name: Cortese, Luca
name: Fritz, Jacopo
name: Auld, Robbie
name: Bendo, George J.
name: Bianchi, Simone
name: Boquien, Médéric
name: Clemens, Marcel
name: Ciesla, Laure
name: Davies, Jonathan
name: Alighieri, Sperello di Serego
name: Grossi, Marco
name: Jones, Anthony
name: Madden, Suzanne C.
name: Pappalardo, Ciro
name: Pierini, Daniele
name: Smith, Matthew W. L.
name: Verstappen, Joris
name: Vlahakis, Catherine
name: Zibetti, Stefano
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use dust scaling relations to investigate the hypothesis that Virgo cluster transition-type dwarfs are infalling star-forming field galaxies, which is argued based on their optical features (e.g. disks, spiral arms, bars) and kinematic properties similar to late-type galaxies. After their infall, environmental effects gradually transform them into early-type galaxies through the removal of their interstellar medium and quenching of all star formation activity. In this paper, we aim to verify whether this hypothesis holds using far-infrared diagnostics based on Herschel observations of the Virgo cluster taken as part of the Herschel Virgo Cluster Survey (HeViCS). We select transition-type objects in the nearest cluster, Virgo, based on spectral diagnostics indicative for their residual or ongoing star formation. We detect dust Md ~ 10^{5-6} Msun in 36% of the transition-type dwarfs located on the high end of the stellar mass distribution. This suggests that the dust reservoirs present in non-detections fall just below the Herschel detection limit (< 1.1x10^5 Msun). Dust scaling relations support the hypothesis of a transformation between infalling late-type galaxies to quiescent low-mass spheroids governed by environmental effects, with dust-to-stellar mass fractions for transition-type dwarfs in between values characteristic for late-type objects and the lower dust fractions observed in early-type galaxies. Several transition-type dwarfs demonstrate blue central cores, hinting at the radially outside-in removal of gas and quenching of star formation activity. The fact that dust is also confined to the inner regions suggests that metals are stripped in the outer regions along with the gas. In the scenario of most dust being stripped from the galaxy along with the gas, we argue that... (abridged)
description: 18 pages, 7 figues, accepted for publication in MNRAS
An outflow perpendicular to the radio jet in the Seyfert nucleus of NGC5929
Creators: name: Riffel, Rogemar A.
name: Storchi-Bergmann, Thaisa
name: Riffel, Rogerio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the observation of an outflow perpendicular to the radio jet in near-infrared integral field spectra of the inner 250 pc of the Seyfert 2 galaxy NGC 5929. The observations were obtained with the Gemini Near infrared Integral Field Spectrograph at a spatial resolution of ~20 pc and spectral resolution R~5300 and reveal a region 50 pc wide crossing the nucleus and extending by 300 pc perpendicularly to the known radio jet in this galaxy. Along this structure - which we call SE-NW strip - the emission-line profiles show two velocity components, one blueshifted and the other redshifted by -150 km/s and 150 km/s, respectively, relative to the systemic velocity. We interpret these two components as due to an outflow perpendicular to the radio jet, what is supported by low frequency radio emission observed along the same region. We attribute this feature to the interaction of ambient gas with an "equatorial outflow" predicted in recent accretion disk and torus wind models. Perpendicularly to the SE-NW strip, thus approximately along the radio jet, single component profiles show blueshifts of ~-150 km/s to the north-east and similar redshifts to the south-west, which can be attributed to gas counter-rotating relative to the stellar kinematics. More double-peaked profiles are observed in association with the two radio hot-spots, attributed to interaction of the radio jet with surrounding gas.
description: Accepted for publication in ApJL; 5 pages
Topological Classification of Gapped/Gap-preserving Rational Space-Time Crystal Systems
Creators: name: Wang, Shu-Xuan
name: Wan, Shaolong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The traditional systems researched in condensed matter physics always have spatial translation symmetry. However for space-time crystal systems, the spatial translation symmetry is no longer preserved and the lattice potential have space-time translation symmetry instead. We show that a rational space-time crystal system is equal to a traditional floquet system. Then, we find a way to solve the floquet equation analytically and construct an effective Hamiltonian of the rational space-time crystal system. By this effective Hamiltonian, we obtain the topological classification of gapped and gap-preserving rational space-time crystal systems. Our works reveal the correlation between space-time crystal systems and floquet systems and give a systematic method to explore the properties of rational space-time crystal systems.
description: 11 pages, 4 figures
CLT for the zeros of Classical Random Trigonometric Polynomials
Creators: name: Azaïs, Jean-Marc
name: Dalmao, Federico
name: León, José R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G15

description: We prove a Central Limit Theorem for the number of zeros of random trigonometric polynomials of the form $K^{-1/2}\sum_{n=1}^{K} a_n\cos(nt)$, being $(a_n)_n$ independent standard Gaussian random variables. In particular, we prove the conjecture by Farahmand, Granville & Wigman that the variance is equivalent to $V^2K$, $0
description: 27 pages. To appear in L'Annales de l'Institut Henri Poincar\'e, Serie B
Global Patterns of Mesoscale Eddy Properties and Diffusivities
Creators: name: Klocker, Andreas
name: Abernathey, Ryan Patrick
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Fluid dynamics
subject: Oceanic mixing
subject: Eddies
subject: Oceanography
subject: FOS: Earth and related environmental sciences

description: Mesoscale eddies play a major role in the transport of tracers in the ocean. Focusing on a sector in the east Pacific, the authors present estimates of eddy diffusivities derived from kinematic tracer simulations using satellite-observed velocity fields. Meridional diffusivities are diagnosed, and how they are related to eddy properties through the mixing length formulation of Ferrari and Nikurashin, which accounts for the suppression of diffusivity due to eddy propagation relative to the mean flow, is shown. The uniqueness of this study is that, through systematically varying the zonal-mean flow, a hypothetical “unsuppressed” diffusivity is diagnosed. At a given latitude, the unsuppressed diffusivity occurs when the zonal-mean flow equals the eddy phase speed. This provides an independent estimate of eddy phase propagation, which agrees well with theoretical arguments. It is also shown that the unsuppressed diffusivity is predicted very well by classical mixing length theory, that is, that it is proportional to the rms eddy velocity times the observed eddy size, with a spatially constant mixing efficiency of 0.35. Then, the suppression factor is estimated and it is shown that it too can be understood quantitatively in terms of easily observed mean flow properties. The authors then extrapolate from these sector experiments to the global scale, making predictions for the global surface eddy diffusivity. Together with a prognostic equation for eddy kinetic energy and a theory explaining observed eddy sizes, these concepts could potentially be used in a closure for eddy diffusivities in coarse-resolution ocean climate models.
Multichannel quantum defect theory of strontium bound Rydberg states
Creators: name: Vaillant, C. L.
name: Jones, M. P. A.
name: Potvliege, R. M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Newly calculated multichannel quantum defect theory parameters and channel fractions are presented for the singlet and triplet S, P and D series and singlet F series of strontium. These results correct those reported in Vaillant C L, Jones M P A and Potvliege R M 2014 J. Phys. B: At. Mol. Opt. Phys. 47 155001.
Quantum Fisher information and polaron picture for identification of transition coupling in quantum Rabi model
Creators: name: Ying, Zu-Jian
name: Wang, Wen-Long
name: Li, Bo-Jian
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum Rabi model (QRM) is a fundamental model for light-matter interactions. A fascinating feature of the QRM is that it manifests a quantum phase transition which is applicable for critical quantum metrology (CQM). Effective application for CQM needs the exact location of the transition point, however the conventional expression for the transition coupling is only valid in the extreme limit of low frequency, while apart from zero frequency an accurate location is still lacking. In the present work we conversely use the quantum Fisher information (QFI) in the CQM to identify the transition coupling, which finds out that transition coupling indeed much deviates from the conventional one once a finite frequency is turned on. Polaron picture is applied to analytically reproduce the numeric QFI. An accurate expression for the transition coupling is obtained by the inspiration from the fractional-power-law effect of polaron frequency renormalization. From the QFI in the polaron picture we find that the transition occurs around a point where the effective velocity and the susceptibility of the single-photon absorption rate reach maximum. Our result provides an accurate reference of transition couplings for quantum metrology at non-zero frequencies. The formulation of the QFI in the polaron picture also prepares an analytic method with an accurate compensation for the parameter regime difficult to access for the numerics. Besides the integer/fractional power law analysis to extract the underlying physics of transition, the QFI/velocity relation may also add some insight in bridging the QFI and transition observables.
description: 14 pages, 8 figures
VOLEYBOLCHILAR HUJUM ZARBASINI AMALGA OSHIRISH SAMARADORLIGIGA JISMONIY SIFATLARINING TA'SIRI
Creators: name: Odilova Feruza Jismoniy tarbiya va sport ilmiy tadqiqotlar instituti tayanch doktoranti
Publisher: name: Zenodo
Year: 2023

description: Zamonaviy voleybol yuqori intensiv o'yin bo'lib, unda oyinchilar muvaffaqiyatli faoliyat olib borish uchun jismoniy sifatlar yuqori rivojlanish darajasiga ega bo'lishi lozim. Shu bilan birga tezlik va muvofiqlashtirish (koordinatsiya) kabijismoniy sifatlarning sezilarli katta ahamiyatga ega ekanligi ta'kidlanadi. Moslashuvchanlik voleybolda sport natijalarining muvaffaqiyati uchun eng past darajada ahamiyatga ega ekanligi aniqlangan.
FedQNN: Federated Learning using Quantum Neural Networks
Creators: name: Innan, Nouhaila
name: Khan, Muhammad Al-Zafar
name: Marchisio, Alberto
name: Shafique, Muhammad
name: Bennai, Mohamed
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Emerging Technologies (cs.ET)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this study, we explore the innovative domain of Quantum Federated Learning (QFL) as a framework for training Quantum Machine Learning (QML) models via distributed networks. Conventional machine learning models frequently grapple with issues about data privacy and the exposure of sensitive information. Our proposed Federated Quantum Neural Network (FedQNN) framework emerges as a cutting-edge solution, integrating the singular characteristics of QML with the principles of classical federated learning. This work thoroughly investigates QFL, underscoring its capability to secure data handling in a distributed environment and facilitate cooperative learning without direct data sharing. Our research corroborates the concept through experiments across varied datasets, including genomics and healthcare, thereby validating the versatility and efficacy of our FedQNN framework. The results consistently exceed 86% accuracy across three distinct datasets, proving its suitability for conducting various QML tasks. Our research not only identifies the limitations of classical paradigms but also presents a novel framework to propel the field of QML into a new era of secure and collaborative innovation.
description: Accepted for presentation at IJCNN 2024
A strong shock during a nova outburst: an origin of multiple velocity systems in optical spectra and of high-energy emissions
Creators: name: Hachisu, Izumi
name: Kato, Mariko
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We propose a theoretical explanation of absorption/emission line systems in classical novae based on a fully self-consistent nova explosion model. We found that a reverse shock is formed far outside the photosphere ($\gtrsim 10^{13}$ cm) because later-ejected mass with a faster velocity collides with earlier-ejected matter. Optically thick winds blow continuously at a rate of $\sim 10^{-4} ~M_\odot$ yr$^{-1}$ near the optical maximum, but its velocity decreases toward the optical maximum and increases afterward, so that the shock arises only after the optical maximum. The nova ejecta is divided by the shock into three parts, the outermost expanding gas (earliest wind before maximum), shocked shell, and inner fast wind, which respectively contribute to pre-maximum, principal, and diffuse-enhanced absorption/emission line systems. A large part of nova ejecta is eventually confined to the shocked shell. The appearance of the principal system is consistent with the emergence of a shock. This shock is strong enough to explain thermal hard X-ray emissions. The shocked layer has a high temperature of $k T_{\rm sh} \sim 1$ keV $\times ((v_{\rm wind} - v_{\rm shock})/{\rm 1000 ~km~s}^{-1})^2 ={\rm 1 ~keV}\times ((v_{\rm d} - v_{\rm p})/{\rm 1000 ~km~s}^{-1})^2$, where $v_{\rm d} - v_{\rm p}$ is the velocity difference between the diffuse-enhanced ($v_{\rm d}$) and principal ($v_{\rm p}$) systems. We compare a 1.3 $M_\odot$ white dwarf model with the observational properties of the GeV gamma-ray detected classical nova V5856 Sgr (ASASSN-16ma) and discuss what kind of novae can produce GeV gamma-ray emissions.
description: 28 pages, 12 figures, minor corrections, published in ApJ, 939, 1 (2022)
Thermodynamic properties of strongly coupled plasma in presence of external magnetic field
Creators: name: Begum, Mahmuda
name: Kuri, Deep Kumar
name: Das, Nilakshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Thermodynamic properties of a Yukawa system consisting of dust particles in plasma are studied in presence of an external magnetic field. It is assumed that dust particles interact with each other by modified potential in presence of magnetic field. Accordingly, a modified expression for internal energy has been obtained. A molecular dynamics code is developed to calculate this internal energy for the entire system. Based on the values of internal energy given by the code Helmholtz free energy and pressure are calculated for the system. Our study shows novel kind of behaviour for internal energy in presence of magnetic field. Thermodynamic properties are affected significantly by magnetic field. The study helps to express internal energy as a function of Coulomb coupling parameter and magnetic field.
Isopycnal mixing by mesoscale eddies significantly impacts oceanic anthropogenic carbon uptake
Creators: name: Gnanadesikan, Anand
name: Pradal, Marie-Aude
name: Abernathey, Ryan Patrick
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Diffusion
subject: Atmospheric carbon dioxide
subject: Eddies
subject: Oceanic mixing
subject: Oceanography
subject: FOS: Earth and related environmental sciences

description: Anthropogenic carbon dioxide uptake varies across Earth System Models for reasons that have remained obscure. When varied within a single model, the lateral eddy mixing coefficient ARedi produces a range of uptake similar to the modeled range. The highest uptake, resulting from a simulation with a constant ARedi of 2400 m2/s, simulates 15% more historical carbon uptake than a model with ARedi = 400 m2/s. A sudden doubling in carbon dioxide produces a 21% range in carbon uptake across the models. Two spatially dependent representations of ARedi produce uptake that lies in the middle of the range of constant values despite predicting very large values in the subtropical gyres. One-dimensional diffusive models of the type used for integrated assessments can be fit to the simulations, with ARedi accounting for a substantial fraction of the effective vertical diffusion. Such models, however, mask significant regional changes in stratification and biological carbon storage.
Strong approximation of fractional Sobolev maps
Creators: name: Bousquet, Pierre
name: Ponce, Augusto C.
name: Van Schaftingen, Jean
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 58D15, 46E35, 46T20

description: Brezis and Mironescu have announced several years ago that for a compact manifold $N^n \subset \mathbb{R}^ν$ and for real numbers $0 < s < 1$ and $1 \le p < \infty$ the class $C^\infty(\overline{Q}^m; N^n)$ of smooth maps on the cube with values into $N^n$ is dense with respect to the strong topology in the Sobolev space $W^{s, p}(Q^m; N^n)$ when the homotopy group $π_{\lfloor sp \rfloor}(N^n)$ of order $\lfloor sp \rfloor$ is trivial. The proof of this beautiful result is long and rather involved. Under the additional assumption that $N^n$ is $\lfloor sp \rfloor$ simply connected, we give a shorter proof of their result. Our proof for $sp \ge 1$ is based on the existence of a retraction of $\mathbb{R}^ν$ onto $N^n$ except for a small subset in the complement of $N^n$ and on the Gagliardo-Nirenberg interpolation inequality for maps in $W^{1, q} \cap L^\infty$. In contrast, the case $sp < 1$ relies on the density of step functions on cubes in $W^{s, p}$.
Towards a Formalism-Based Toolkit for Automotive Applications
Creators: name: Gmehlich, Rainer
name: Grau, Katrin
name: Iliasov, Alexei
name: Jackson, Michael
name: Loesch, Felix
name: Mazzara, Manuel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: The success of a number of projects has been shown to be significantly improved by the use of a formalism. However, there remains an open issue: to what extent can a development process based on a singular formal notation and method succeed. The majority of approaches demonstrate a low level of flexibility by attempting to use a single notation to express all of the different aspects encountered in software development. Often, these approaches leave a number of scalability issues open. We prefer a more eclectic approach. In our experience, the use of a formalism-based toolkit with adequate notations for each development phase is a viable solution. Following this principle, any specific notation is used only where and when it is really suitable and not necessarily over the entire software lifecycle. The approach explored in this article is perhaps slowly emerging in practice - we hope to accelerate its adoption. However, the major challenge is still finding the best way to instantiate it for each specific application scenario. In this work, we describe a development process and method for automotive applications which consists of five phases. The process recognizes the need for having adequate (and tailored) notations (Problem Frames, Requirements State Machine Language, and Event-B) for each development phase as well as direct traceability between the documents produced during each phase. This allows for a stepwise verification/validation of the system under development. The ideas for the formal development method have evolved over two significant case studies carried out in the DEPLOY project.
Topographic Enhancement of Eddy Efficiency in Baroclinic Equilibration
Creators: name: Abernathey, Ryan Patrick
name: Cessi, Paola
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Baroclinicity
subject: Fluid dynamics
subject: Oceanography
subject: FOS: Earth and related environmental sciences

description: The processes that determine the depth of the Southern Ocean thermocline are considered. In existing conceptual frameworks, the thermocline depth is determined by competition between the mean and eddy heat transport, with a contribution from the interaction with the stratification in the enclosed portion of the ocean. Using numerical simulations, this study examines the equilibration of an idealized circumpolar current with and without topography. The authors find that eddies are much more efficient when topography is present, leading to a shallower thermocline than in the flat case. A simple quasigeostrophic analytical model shows that the topographically induced standing wave increases the effective eddy diffusivity by increasing the local buoyancy gradients and lengthening the buoyancy contours across which the eddies transport heat. In addition to this local heat flux intensification, transient eddy heat fluxes are suppressed away from the topography, especially upstream, indicating that localized topography leads to local (absolute) baroclinic instability and its subsequent finite-amplitude equilibration, which extracts available potential energy very efficiently from the time-mean flow.
Numerical analysis of a three-wave-mixing Josephson traveling-wave parametric amplifier with engineered dispersion loadings
Creators: name: Gaydamachenko, Victor
name: Kissling, Christoph
name: Dolata, Ralf
name: Zorin, Alexander B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The recently proposed Josephson traveling-wave parametric amplifier (JTWPA) based on a ladder transmission line consisting of radio-frequency SQUIDs and exploiting three-wave mixing (3WM), has great potential in achieving both a gain of 20 dB and a flat bandwidth of at least 4 GHz. To realize this concept in practical amplifiers we model the advanced JTWPA circuit with periodic modulation of the circuit parameters (engineered dispersion loadings), which allow the basic mixing process, i.e., $ω_s=ω_p-ω_i$, where $ω_s$, $ω_p$, and $ω_i$ are the signal, the pump, and the idler frequencies, respectively, and efficiently suppress propagation of unwanted higher tones including $ω_{2p}=2ω_p$, $ω_{p+s}=ω_p +ω_s$, $ω_{p+i} = ω_p + ω_i$, etc. The engineered dispersion loadings allow achieving sufficiently wide $3$ dB-bandwidth from $3$ GHz to $9$ GHz combined with a reasonably small ripple ($\pm2$ dB) in the gain-versus-frequency dependence.
Scaling a unitary matrix
Creators: name: De Vos, Alexis
name: De Baerdemacker, Stijn
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The iterative method of Sinkhorn allows, starting from an arbitrary real matrix with non-negative entries, to find a so-called 'scaled matrix' which is doubly stochastic, i.e. a matrix with all entries in the interval (0, 1) and with all line sums equal to 1. We conjecture that a similar procedure exists, which allows, starting from an arbitrary unitary matrix, to find a scaled matrix which is unitary and has all line sums equal to 1. The existence of such algorithm guarantees a powerful decomposition of an arbitrary quantum circuit.
description: A proof of the conjecture is now provided by Idel & Wolf (http://arxiv.org/abs/1408.5728)
Efficient hybrid entanglement concentration for quantum communications
Creators: name: Zhou, Lan
name: Sheng, Yu-Bo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present two groups of practical entanglement concentration protocols (ECPs) for optical hybrid entangled state (HES). In the first group, it contains two ECPs and both ECPs do not need to know the initial coefficients of the less-entangled state. The second group contains three ECPs and they need to know the initial coefficients. It is shown that the yield of the entanglement concentration in the second group is greater than the first group. Moreover, some protocols are based on the linear optics and can be easily realized under current experiment condition. These protocols may be useful in current hybrid quantum communication.
description: 10 pages, 8 figures
A face-centred finite volume method for laminar and turbulent incompressible flows
Creators: name: Vieira, Luan M.
name: Giacomini, Matteo
name: Sevilla, Ruben
name: Huerta, Antonio
Publisher: name: arXiv
Year: 2024
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 76M12, 76D05, 65M12, 76F99

description: This work develops, for the first time, a face-centred finite volume (FCFV) solver for the simulation of laminar and turbulent viscous incompressible flows. The formulation relies on the Reynolds-averaged Navier-Stokes (RANS) equations coupled with the negative Spalart-Allmaras (SA) model and three novel convective stabilisations, inspired by Riemann solvers, are derived and compared numerically. The resulting method achieves first-order convergence of the velocity, the velocity-gradient tensor and the pressure. FCFV accurately predicts engineering quantities of interest, such as drag and lift, on unstructured meshes and, by avoiding gradient reconstruction, the method is less sensitive to mesh quality than other FV methods, even in the presence of highly distorted and stretched cells. A monolithic and a staggered solution strategies for the RANS-SA system are derived and compared numerically. Numerical benchmarks, involving laminar and turbulent, steady and transient cases are used to assess the performance, accuracy and robustness of the proposed FCFV method.
description: 42 pages, 25 figures, 4 tables
QUAK: A Synthetic Quality Estimation Dataset for Korean-English Neural Machine Translation
Creators: name: Eo, Sugyeong
name: Park, Chanjun
name: Moon, Hyeonseok
name: Seo, Jaehyung
name: Kim, Gyeongmin
name: Lee, Jungseob
name: Lim, Heuiseok
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: With the recent advance in neural machine translation demonstrating its importance, research on quality estimation (QE) has been steadily progressing. QE aims to automatically predict the quality of machine translation (MT) output without reference sentences. Despite its high utility in the real world, there remain several limitations concerning manual QE data creation: inevitably incurred non-trivial costs due to the need for translation experts, and issues with data scaling and language expansion. To tackle these limitations, we present QUAK, a Korean-English synthetic QE dataset generated in a fully automatic manner. This consists of three sub-QUAK datasets QUAK-M, QUAK-P, and QUAK-H, produced through three strategies that are relatively free from language constraints. Since each strategy requires no human effort, which facilitates scalability, we scale our data up to 1.58M for QUAK-P, H and 6.58M for QUAK-M. As an experiment, we quantitatively analyze word-level QE results in various ways while performing statistical analysis. Moreover, we show that datasets scaled in an efficient way also contribute to performance improvements by observing meaningful performance gains in QUAK-M, P when adding data up to 1.58M.
SeisFusion: Constrained Diffusion Model with Input Guidance for 3D Seismic Data Interpolation and Reconstruction
Creators: name: Wang, Shuang
name: Deng, Fei
name: Jiang, Peifan
name: Gong, Zishan
name: Wei, Xiaolin
name: Wang, Yuqing
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Geophysics (physics.geo-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Geographical, physical, or economic constraints often result in missing traces within seismic data, making the reconstruction of complete seismic data a crucial step in seismic data processing. Traditional methods for seismic data reconstruction require the selection of multiple empirical parameters and struggle to handle large-scale continuous missing data. With the development of deep learning, various neural networks have demonstrated powerful reconstruction capabilities. However, these convolutional neural networks represent a point-to-point reconstruction approach that may not cover the entire distribution of the dataset. Consequently, when dealing with seismic data featuring complex missing patterns, such networks may experience varying degrees of performance degradation. In response to this challenge, we propose a novel diffusion model reconstruction framework tailored for 3D seismic data. To constrain the results generated by the diffusion model, we introduce conditional supervision constraints into the diffusion model, constraining the generated data of the diffusion model based on the input data to be reconstructed. We introduce a 3D neural network architecture into the diffusion model, successfully extending the 2D diffusion model to 3D space. Additionally, we refine the model's generation process by incorporating missing data into the generation process, resulting in reconstructions with higher consistency. Through ablation studies determining optimal parameter values, our method exhibits superior reconstruction accuracy when applied to both field datasets and synthetic datasets, effectively addressing a wide range of complex missing patterns. Our implementation is available at https://github.com/WAL-l/SeisFusion.
description: in IEEE Transactions on Geoscience and Remote Sensing (2024)
$Z_N$-balls: Solitons from $Z_N$-symmetric scalar field theory
Creators: name: Buisseret, F.
name: Brihaye, Y.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We discuss the conditions under which static, finite-energy, configurations of a complex scalar field $ϕ$ with constant phase and spherically symmetric norm exist in a potential of the form $V(ϕ^*ϕ, ϕ^N+ϕ^{*N})$ with $N\in\mathbb{N}$ and $N\geq2$, i.e. a potential with a $Z_N$-symmetry. Such configurations are called $Z_N$-balls. We build explicit solutions in $(3+1)$-dimensions from a model mimicking effective field theories based on the Polyakov loop in finite-temperature SU($N$) Yang-Mills theory. We find $Z_N$-balls for $N=$3, 4, 6, 8, 10 and show that only static solutions with zero radial node exist for $N$ odd, while solutions with radial nodes may exist for $N$ even.
Unified Theory of Activated Relaxation in Liquids over 14 Decades in Time
Creators: name: Mirigian, Stephen
name: Schweizer, Kenneth S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We formulate a predictive theory at the level of forces of activated relaxation in hard sphere fluids and thermal liquids that covers in a unified manner the apparent Arrhenius, crossover and deeply supercooled regimes. The alpha relaxation event involves coupled cage-scale hopping and a long range collective elastic distortion of the surrounding liquid, which results in two inter-related, but distinct, barriers. The strongly temperature and density dependent collective barrier is associated with a growing length scale, the shear modulus and density fluctuations. Thermal liquids are mapped to an effective hard sphere fluid based on matching long wavelength density fluctuation amplitudes, resulting in a zeroth order quasi-universal description. The theory is devoid of fit parameters, has no divergences at finite temperature nor below jamming, and captures the key features of the alpha time of molecular liquids from picoseconds to hundreds of seconds.
The numbers of z~2 star-forming and passive galaxies in 2.5 square degrees of deep CFHT imaging
Creators: name: Liz, Arcila-Osejo
name: Marcin, Sawicki
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use an adaptation of the BzKs technique to select ~40,000 z~2 galaxies (to K(AB) = 24), including ~5,000 passively evolving (PE) objects (to K(AB) = 23), from 2.5 deg^2 of deep CFTH imaging. The passive galaxy luminosity function exhibits a clear peak at R = 22 and a declining faint-end slope (α = - 0.12 [+0.16 -0.14]),while that of star-forming galaxies is characterized by a steep faint-end slope (α = -1.43 +- [0.02] (systematic) [+0.05 -0.04] (random)). The details of the LFs are somewhat sensitive (at <25% level) to cosmic variance even in these large(~0.5 deg^2) fields, with the D2 field (located in the COSMOS field) most discrepant from the mean. The shape of the z ~ 2 stellar mass function of passive galaxies is remarkably similar to that at z ~ 0.9, save for a factor of ~4 lower number density. This similarity suggests that the same mechanism may be responsible for the formation of passive galaxies seen at both these epochs. This same formation mechanism may also operate down to z ~ 0 if the local PE galaxy mass function, known to be two-component, contains two distinct galaxy populations. This scenario is qualitatively in agreement with recent phenomenological mass-quenching models and extends them to span more than three quarters of the history of the Universe.
description: 18 pages, 13 Figures
Climate Activism Favors Pro-environmental Consumption
Creators: name: Marini, A. Marco
name: Nocito, Samuel
Publisher: name: Unknown
Year: 2023
Subjects: subject: Consumer/Household Economics
subject: Environmental Economics and Policy
subject: fridays for future
subject: climate activism
subject: green consumption
subject: carbon emissions

description: We investigate whether climate activism favors pro-environmental consumption by examining the impact of Fridays for Future (FFF) protests in Italy on second-hand automobile transactions in the strike-affected areas. Leveraging data on 10 million automobile transactions occurring before and after FFF, we exploit rainfall on the day of the events as exogenous source of attendance variation. Our findings reveal that local participation to the events is associated with a reduction in the per capita CO2 emissions of purchased cars, an uptick in the market share of low-emission vehicles and a corresponding decrease in the market share of high-emission counterparts. Notably, we uncover heterogeneous effects across gender and age groups. Results are primarily driven by a rise in the purchase of petrol cars, with electric cars contributing to a lesser extent, thereby displacing the demand for diesel vehicles. This evidence indicates substitution effects between goods prospectively subject to more stringent environmental regulations toward those obeying milder restrictions. The study provides valuable insights into the mechanisms underlying individuals’ consumption choices under the influence of social protests.
Normal-state charge dynamics in doped BaFe2As2: Roles of doping and necessary ingredients for superconductivity
Creators: name: Nakajima, M.
name: Ishida, S.
name: Tanaka, T.
name: Kihou, K.
name: Tomioka, Y.
name: Saito, T.
name: Lee, C. H.
name: Fukazawa, H.
name: Kohori, Y.
name: Kakeshita, T.
name: Iyo, A.
name: Ito, T.
name: Eisaki, H.
name: Uchida, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We carried out a comparative study of the in-plane resistivity and optical spectrum of doped BaFe2As2 and investigated the doping evolution of the charge dynamics. For BaFe2As2, charge dynamics is incoherent at high temperatures. Electron (Co) and isovalent (P) doping into BaFe2As2 increase coherence of the system and transform the incoherent charge dynamics into highly coherent one. On the other hand, charge dynamics remains incoherent for hole (K) doping. It is found in common with any type of doping that superconductivity with high transition temperature emerges when the normal-state charge dynamics maintains incoherence and when the resistivity associated with the coherent channel exhibits dominant temperature-linear dependence.
description: 8 pages, 5 figures
Towards effective assessment of steady state performance in Java software: Are we there yet?
Creators: name: Traini, Luca
name: Cortellessa, Vittorio
name: Di Pompeo, Daniele
name: Tucci, Michele
Publisher: name: arXiv
Year: 2022
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Microbenchmarking is a widely used form of performance testing in Java software. A microbenchmark repeatedly executes a small chunk of code while collecting measurements related to its performance. Due to Java Virtual Machine optimizations, microbenchmarks are usually subject to severe performance fluctuations in the first phase of their execution (also known as warmup). For this reason, software developers typically discard measurements of this phase and focus their analysis when benchmarks reach a steady state of performance. Developers estimate the end of the warmup phase based on their expertise, and configure their benchmarks accordingly. Unfortunately, this approach is based on two strong assumptions: (i) benchmarks always reach a steady state of performance and (ii) developers accurately estimate warmup. In this paper, we show that Java microbenchmarks do not always reach a steady state, and often developers fail to accurately estimate the end of the warmup phase. We found that a considerable portion of studied benchmarks do not hit the steady state, and warmup estimates provided by software developers are often inaccurate (with a large error). This has significant implications both in terms of results quality and time-effort. Furthermore, we found that dynamic reconfiguration significantly improves warmup estimation accuracy, but still it induces suboptimal warmup estimates and relevant side-effects. We envision this paper as a starting point for supporting the introduction of more sophisticated automated techniques that can ensure results quality in a timely fashion.
description: Published in Empirical Software Engineering (EMSE)
Machine learning classification of CHIME fast radio bursts -- I. Supervised methods
Creators: name: Luo, Jia-Wei
name: Zhu-Ge, Jia-Ming
name: Zhang, Bing
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Observationally, the mysterious fast radio bursts (FRBs) are classified as repeating ones and apparently non-repeating ones. While repeating FRBs cannot be classified into the non-repeating group, it is unknown whether the apparently non-repeating FRBs are actually repeating FRBs whose repetitions are yet to be discovered, or whether they belong to another physically distinct type from the repeating ones. In a series of two papers, we attempt to disentangle this mystery with machine learning methods. In this first paper, we focus on an array of supervised machine learning methods. We train the machine learning algorithms with a fraction of the observed FRBs in the first CHIME/FRB catalog, telling them which ones are apparently non-repeating and which ones are repeating. We then let the trained models predict the repetitiveness of the rest of the FRB data with the observed parameters, and we compare the predictions with the observed repetitiveness. We find that the models can predict most FRBs correctly, hinting towards distinct mechanisms behind repeating and non-repeating FRBs. We also find that the two most important distinguishing factors between non-repeating and repeating FRBs are brightness temperature and rest-frame frequency bandwidth. By applying the trained models back to the entire first CHIME catalog, we further identify some potentially repeating FRBs currently reported as non-repeating. We recommend a list of these bursts as targets for future observing campaigns to search for repeated bursts in a combination with the results presented in Paper II using unsupervised machine learning methods.
description: 14 pages, 5 figures, 4 tables, published on MNRAS. Updated to match the published version
Model Parenting Education And Stimulation Play Therapy In  Growth And Early Childhood Development
Creators: name: Atik Badi'ah
name: Ni Ketut Mendri
name: Bondan Palestin
name: Furaida Khasanah
name: Titi Sulastri
name: Iskari Ngadiarti
name: Umi Fahmida
name: Destiana
Publisher: name: Zenodo
Year: 2023
Subjects: Parenting Education, Stimulation Of Play Therapy, Growth, Early Childhood Development.

description: Abstract
Background Of The Study : Children experience growth and development from birth to adulthood. During the toddler stage, the growth and development of children occurs very quickly. Knowledge about growth, development and stimulation of play therapy is very important for a mother to have. This will have an effect on stimulating play therapy to increase growth and development in early childhood. Parental participation in early childhood education is pivotal for child growth and development, one of which is trough play therapy and stimulation. However, most parents are unaware of the importance of their participation and are lack skills to implement good practice. Thus identification of models for parenting education and stimulation of play therapy in early childhood. Family environment is also said to be the most important environment, because most of the children's life is in the family, so that the most education received by early childhood is in the family. Parenting education for parents who have early childhood in PAUD (Early Childhood Education) with day care is manifested in a way of assisting parents in stimulating play therapy and how to educate children. Aim Of The Study : To develop and validate the module models of parenting education and stimulation of play therapy in early childhood growth and development. Methodology : The methodological study conducted to examine the content validity of the models of parenting education and stimulation of play therapy in early childhood growth and development book through a two-step process (development and judgment). At the first step, domain determination, sampling (item generation) and instrument formation and at the second step, content validity ratio was performed. Suggestions of expert panel and item impact scores are used to examine the instrument face validity. Results: The making of the book "Model Parenting Education (Stimulation of Playing Therapy for  Early Childhood Growth and Development)" has been reviewed by 2 expert examiners and tested on 22 PAUD teachers from 11 PAUD and 11 parents of PAUD children from 11 PAUD in Yogyakarta. Conclusion : Models of parenting education and stimulation of play therapy in early childhood development and development can be applied to PAUD in PAUD.
Front speed enhancement by incompressible flows in three or higher dimensions
Creators: name: Smaily, Mohammad El
name: Kirsch, Stéphane
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35K57, 35Q35, 37A05, 37A25, 92D25

description: We study, in dimensions $N\geq 3$, the family of first integrals of an incompressible flow: these are $H^{1}_{loc}$ functions whose level surfaces are tangent to the streamlines of the advective incompressible field. One main motivation for this study comes from earlier results proving that the existence of nontrivial first integrals of an incompressible flow $q$ is the main key that leads to a "linear speed up" by a large advection of pulsating traveling fronts solving a reaction-advection-diffusion equation in a periodic heterogeneous framework. The family of first integrals is not well understood in dimensions $N\geq3$ due to the randomness of the trajectories of $q$ and this is in contrast with the case N=2. By looking at the domain of propagation as a union of different components produced by the advective field, we provide more information about first integrals and we give a class of incompressible flows which exhibit `ergodic components' of positive Lebesgue measure (hence are not shear flows) and which, under certain sharp geometric conditions, speed up the KPP fronts linearly with respect to the large amplitude. In the proofs, we establish a link between incompressibility, ergodicity, first integrals, and the dimension to give a sharp condition about the asymptotic behavior of the minimal KPP speed in terms the configuration of ergodic components.
description: 34 pages, 3 figures
title: Developing a Workflow to Evaluate Medications for Repurposing Using Health Claims Data
title: Application to Substance Use Disorders
titleType: Subtitle
Creators: name: Hankosky, Emily
Publisher: name: University of Kentucky Libraries
Year: 2019

description: Healthcare big data are a growing source of real-world data with which to identify and validate medications with repurposing potential. Previously, we developed a claims-based workflow to evaluate medications with potential to treat stimulant use disorders. In order to test the workflow, the framework was applied in the context of opioid use disorders (OUDs), for which there are medications with known efficacy. Using the Truven Marketscan Commercial Claims Database, a nested case-control analysis was conducted to determine the association between OUD medications (buprenorphine, naltrexone) and remission. Cases were defined as enrollees with a remission diagnosis and matched (1:4) to controls (individuals without remission) using incidence density sampling, with age group, sex, region, and index year as additional matching variables. After adjusting for behavioral health visits, polysubstance use disorders, and psychiatric disorders using conditional logistic regression, the odds of OUD medication exposure were 3.8 (99% confidence interval: 3.0 – 4.9) times higher in cases than controls. Evaluation of angiotensin converting enzyme inhibitors (e.g. lisinopril) as a negative control revealed no significant association between the medication and remission. This work demonstrates the feasibility of using administrative health claims data to evaluate the effectiveness of medications to treat substance use disorders.
description: Copyright © Emily Ruth Hankosky 2019
description: Funding information: This research was supported by grants from the National Institutes of Health NIDA T32 DA016176, NIDA F32 DA045483 and grants from the National Center for Advancing Translational Sciences CTSA UL1TR001998, CTSA UL1TR000117.