cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Study of $ψ(3686) \rightarrow ωK \bar{K} π$ decays
Creators: name: BESIII Collaboration
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Based on 106 million $ψ(3686)$ events collected with the BESIII detector at the BEPCII, the decay $ψ(3686) \rightarrow ωK \bar{K} π$ is studied. Enhancements around 1.44 GeV/$c^{2}$ and the $f_{1}(1285)$ are observed in the mass spectrum of $K \bar{K}π$, and the corresponding branching fractions are measured, as well as the branching fractions of $ψ(3686) \rightarrow ωK^{*+}K^{-}+c.c.$ and $ψ(3686) \rightarrow ω\bar{K}^{*0}K^{0}+c.c.$, all for the first time.
description: 20 pages and 9 figures
Infinite volume and continuum limits for gluon propagator in 3d SU(2) lattice gauge theory
Creators: name: Bornyakov, V. G.
name: Mitrjushkin, V. K.
name: Rogalyov, R. N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study the Landau gauge gluon propagator D(p) in the 3d SU(2) lattice gauge theory. We show that in the infinite-volume limit the expectation values over the Gribov region Ω, are different (in the infrared) from that calculated in the fundamental modular region Γ. Also we show that this conclusion does not change when spacing $a$ tends to zero.
description: 7 pages, 5 figures. arXiv admin note: substantial text overlap with arXiv:1112.4975
title:  Cura e relazione in pedagogia durante la pandemia. Le artiterapie
Creators: name: Battista, Fernando
name: Aleandri, Gabriella
Publisher: name: RomaTrE-Press
Year: 2021

description: La pandemia Covid-19 ha comportato conseguenze e trasformazioni prefigurando scenari inediti sul piano economico, sociale e personale, determinando anche nel campo della ricerca l’urgenza di esplorarne le ricadute. Il volume dà quindi conto delle indagini svolte e in corso, sin dai primi giorni del lockdown, dai docenti e dai collaboratori del Dipartimento di Scienze della Formazione dell’Università Roma Tre, toccando i temi più diversi: dalla didattica a distanza, all’università e nei diversi ordini di scuola, al futuro dei servizi di orientamento, dal lavoro socio-educativo nelle varie tipologie di servizi all’impatto della pandemia sulle comunità, dalle narrazioni ai linguaggi artistici a contrasto di quest’emergenza non solo sanitaria. Si sono così esplorate le diverse educazioni possibili, riassegnando centralità ai processi formativi e al benessere delle persone, provando a tratteggiare nuovi paradigmi e prospettive.
description: In tempo di pandemia, il ricorso al digitale è diventata la soluzione a diverse esigenze, anche a quelle pedagogiche, nonostante i limiti e gli adattamenti che, nel tempo, possono essere comunque rivisitati come opportunità del sistema virtuale. Il web stesso può essere inteso come mente e intelligenza collettiva (Levy, 1996) che si connette, dando vita a una intelligenza connettiva (De Kerckhove, 2001). Ma dov’è il corpo in tutto questo? Può il corpo ritrovare uno spazio dedicato al prendersi cura, ritrovare la sua identità in senso simbolico e mediato? È possibile prendersi cura dei discenti in senso pedagogico, attuando quello scambio reciproco fatto di supporto, sostegno, attenzione, ascolto attivo, dono, comunicazione, dialogo, che sono la base della relazione educativa? Si è in grado di stimolare quel riconoscimento emotivo che genera empatia, fondamentale nella relazione pedagogica? In questo contributo intendiamo spiegare perché le artiterapie sono in grado di “bucare la rete”, e riuscire a entrare in una relazione autentica grazie a un adattamento e un cambio di paradigma che consente di ritrovare il senso della relazione umana e educativa.
description: La Ricerca dipartimentale ai tempi del COVID-19
Semitauonic $b$-hadron decays: A lepton flavor universality laboratory
Creators: name: Bernlochner, Florian U.
name: Sevilla, Manuel Franco
name: Robinson, Dean J.
name: Wormser, Guy
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The study of lepton flavor universality violation (LFUV) in semitauonic $b$-hadron decays has become increasingly important in light of longstanding anomalies in their measured branching fractions, and the very large datasets anticipated from the LHC and Belle II. In this review, we undertake a comprehensive survey of the experimental environments and methodologies for semitauonic LFUV measurements at the $B$-factories and LHCb, along with a concise overview of the theoretical foundations and predictions for a wide range of semileptonic decay observables. We proceed to examine the future prospects to control systematic uncertainties down to the percent level, matching the precision of Standard Model (SM) predictions. Furthermore, we discuss new perspectives and caveats on combinations of the LFUV data and revisit the world averages for the ${\cal R}(D^{(*)})$ ratios. Here we demonstrate that different treatments for the correlations of uncertainties from $D^{**}$ excited states can vary the current $3σ$ tension with the SM within a $1σ$ range. Prior experimental overestimates of $D^{**}τν$ contributions may further exacerbate this. The precision of future measurements is also estimated; their power to exploit full differential information, and solutions to the inherent difficulties in self-consistent new physics interpretations of LFUV observables, are briefly explored.
description: Published version plus an additional subsection on the new R(Lc) results
Rods coiling about a rigid constraint: Helices and perversions
Creators: name: Riccobelli, Davide
name: Noselli, Giovanni
name: DeSimone, Antonio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Mechanical instabilities can be exploited to design innovative structures, able to change their shape in the presence of external stimuli. In this work, we derive a mathematical model of an elastic beam subjected to an axial force and constrained to smoothly slide along a rigid support, where the distance between the rod midline and the constraint is fixed and finite. Using both theoretical and computational techniques, we characterize the bifurcations of such a mechanical system, in which the axial force and the natural curvature of the beam are used as control parameters. We show that, in the presence of a straight support, the rod can deform into shapes exhibiting helices and perversions, namely transition zones connecting together two helices with opposite chirality. The mathematical predictions of the proposed model are also compared with some experiments, showing a good quantitative agreement. In particular, we find that the buckled configurations may exhibit multiple perversions and we propose a possible explanation for this phenomenon based on the energy landscape of the mechanical system.
The small scale dynamo and the amplification of magnetic fields in massive primordial haloes
Creators: name: Latif, M. A.
name: Schleicher, D. R. G.
name: Schmidt, W.
name: Niemeyer, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: While present standard model of cosmology yields no clear prediction for the initial magnetic field strength, efficient dynamo action may compensate for initially weak seed fields via rapid amplification. In particular, the small-scale dynamo is expected to exponentially amplify any weak magnetic field in the presence of turbulence. We explore whether this scenario is viable using cosmological magneto-hydrodynamics simulations modeling the formation of the first galaxies, which are expected to form in so-called atomic cooling halos with virial temperatures $\rm T_{vir} \geq 10^{4}$ K. As previous calculations have shown that a high Jeans resolution is needed to resolve turbulent structures and dynamo effects, our calculations employ resolutions of up to 128 cells per Jeans length. The presence of the dynamo can be clearly confirmed for resolutions of at least 64 cells per Jeans length, while saturation occurs at approximate equipartition with turbulent energy. As a result of the large Reynolds numbers in primordial galaxies, we expect saturation to occur at early stages, implying magnetic field strengths of \sim0.1 $μ$G at densities of 10^4 cm^{-3}.
description: Matches the accepted version to be appeared in MNRAS
title: Estimated Discard and Catch of Groundfish Species in the 2017 U.S. West Coast Fisheries
Creators: name: Somers, Kayleigh A.
name: Jannot, Jason E.
name: Richerson, Kate
name: Tuttle, Vanessa
name: Riley, Neil B.
name: McVeigh, Jon T.
Publisher: name: Northwest Fisheries Science Center (U.S.)
Year: 2019

description: NOAA technical memorandum NMFS-NWFSC-150
Structural aspects of asymptotically safe black holes
Creators: name: Koch, Benjamin
name: Saueressig, Frank
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the quantum modifications of classical, spherically symmetric Schwarzschild (Anti-) de Sitter black holes within Quantum Einstein Gravity. The quantum effects are incorporated through the running coupling constants $G_k$ and $Λ_k$, computed within the exact renormalization group approach, and a common scale-setting procedure. We find that, in contrast to common intuition, it is actually the cosmological constant that determines the short-distance structure of the RG-improved black hole: in the asymptotic UV the structure of the quantum solutions is universal and given by the classical Schwarzschild-de Sitter solution, entailing a self-similarity between the classical and quantum regime. As a consequence asymptotically safe black holes evaporate completely and no Planck-size remnants are formed. Moreover, the thermodynamic entropy of the critical Nariai-black hole is shown to agree with the microstate count based on the effective average action, suggesting that the entropy originates from quantum fluctuations around the mean-field geometry.
description: 28 pages 13 figures
title: Poema: II
Creators: name: Correia, Natália
Publisher: name: CICS.NOVA
Year: 2019

description: Poema. Faces de Eva. Estudos sobre a Mulher, Jun 2019, no.41, p.10-13. ISSN 0874-6885
description: Poema originalmente publicado em Correia, N. (1979). O dilúvio e a pomba. Lisboa: D. Quixote, p. 62.
Machine Learning and the Acquisition of Natural Concepts based on the Psychological Theory of Prototypes
Creators: name: Musgrove, P.
Publisher: name: London South Bank University
Year: 1989

description: This thesis describes a research programme on machine learning, based on the fundamental process of categorisation. This work draws upon the cognitive psychological theory of prototypical concepts. This theory states that concepts, learnt naturally through interaction with the environment (basic concepts or categories), are not structured or defined in logical terms but are clustered in accordance with their similarity to a central prototype, representing the "most typical" member. The PLANC (Prototypical Learner & Acquirer of Natural Concepts) system, built to operationalise aspects of Prototype theory, differs from mainstream Machine Learning in three respects. First, examples are provided visually in the form of two-dimensional canonical views of three-dimensional objects, drawn from a variety of generic concepts. The number and characteristics of these concepts being unknown to PLANC. Secondly, no form of instruction is given as to what the target concepts should be, these being detected by using only the inherent correlation of perceptual attributes. Thirdly, the final concept is represented as a non-logical description consisting of a structural description abstracted from category members, together with typical shapes of individual parts. The PLANC system incorporates ideas and techniques from a variety of other fields: Machine Learning, Pattern Recognition, Image Processing, Computer Vision, Statistics and Cognitive Psychology. These are embodied in a set of modules that perform the tasks of: decomposing shapes into component parts, describing the structure between parts, and categorisation based upon similarities of structure and shape of parts. Results produced by PLANC indicate that concepts held by humans arise automatically from the detection of similarities between the innate structure and shape of natural objects. This provides strong support for Prototype theory as it shows the depth of structuring of the real world that must exist for natural concepts to be recoverable from such an impoverished source of information as two-dimensional silhouettes.
Predictive Factors of Kinematics in Traumatic Brain Injury from Head Impacts Based on Statistical Interpretation
Creators: name: Zhan, Xianghao
name: Li, Yiheng
name: Liu, Yuzhe
name: Domel, August G.
name: Alizadeh, Hossein Vahid
name: Zhou, Zhou
name: Cecchi, Nicholas J.
name: Raymond, Samuel J.
name: Tiernan, Stephen
name: Ruan, Jesse
name: Barbat, Saeed
name: Gevaert, Olivier
name: Zeineh, Michael M.
name: Grant, Gerald A.
name: Camarillo, David B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Machine Learning (cs.LG)
subject: Applications (stat.AP)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Brain tissue deformation resulting from head impacts is primarily caused by rotation and can lead to traumatic brain injury. To quantify brain injury risk based on measurements of kinematics on the head, finite element (FE) models and various brain injury criteria based on different factors of these kinematics have been developed, but the contribution of different kinematic factors has not been comprehensively analyzed across different types of head impacts in a data-driven manner. To better design brain injury criteria, the predictive power of rotational kinematics factors, which are different in 1) the derivative order (angular velocity, angular acceleration, angular jerk), 2) the direction and 3) the power (e.g., square-rooted, squared, cubic) of the angular velocity, were analyzed based on different datasets including laboratory impacts, American football, mixed martial arts (MMA), NHTSA automobile crashworthiness tests and NASCAR crash events. Ordinary least squares regressions were built from kinematics factors to the 95\% maximum principal strain (MPS95), and we compared zero-order correlation coefficients, structure coefficients, commonality analysis, and dominance analysis. The angular acceleration, the magnitude, and the first power factors showed the highest predictive power for the majority of impacts including laboratory impacts, American football impacts, with few exceptions (angular velocity for MMA and NASCAR impacts). The predictive power of rotational kinematics in three directions (x: posterior-to-anterior, y: left-to-right, z: superior-to-inferior) of kinematics varied with different sports and types of head impacts.
Video Face Matching using Subset Selection and Clustering of Probabilistic Multi-Region Histograms
Creators: name: Mau, Sandra
name: Chen, Shaokang
name: Sanderson, Conrad
name: Lovell, Brian C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences
subject: I.5.4; I.4.7; I.5.3; G.3

description: Balancing computational efficiency with recognition accuracy is one of the major challenges in real-world video-based face recognition. A significant design decision for any such system is whether to process and use all possible faces detected over the video frames, or whether to select only a few "best" faces. This paper presents a video face recognition system based on probabilistic Multi-Region Histograms to characterise performance trade-offs in: (i) selecting a subset of faces compared to using all faces, and (ii) combining information from all faces via clustering. Three face selection metrics are evaluated for choosing a subset: face detection confidence, random subset, and sequential selection. Experiments on the recently introduced MOBIO dataset indicate that the usage of all faces through clustering always outperformed selecting only a subset of faces. The experiments also show that the face selection metric based on face detection confidence generally provides better recognition performance than random or sequential sampling. Moreover, the optimal number of faces varies drastically across selection metric and subsets of MOBIO. Given the trade-offs between computational effort, recognition accuracy and robustness, it is recommended that face feature clustering would be most advantageous in batch processing (particularly for video-based watchlists), whereas face selection methods should be limited to applications with significant computational restrictions.
Testing General Relativity with 21 cm intensity mapping
Creators: name: Hall, Alex
name: Bonvin, Camille
name: Challinor, Anthony
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the prospects for constraining alternative theories of gravity with a typical near-term low-budget 21 cm intensity mapping experiment. We derive the 21 cm brightness temperature perturbation consistently in linear theory including all line-of-sight and relativistic effects. We uncover new terms that are a small correction on large scales, analogous to those recently found in the context of galaxy surveys. We then perform a Fisher matrix analysis of the B_0 parametrization of f(R) gravity, where B_0 is proportional to the square of Compton wavelength of the scalaron. We find that our 21 cm survey, in combination with CMB information from Planck, will be able to place a 95% upper limit of 7 x 10^{-5} on B_0 in flat models with a LCDM expansion history, improving on current cosmological constraints by several orders of magnitude. We argue that this constraint is limited by our ability to model the mildly non-linear regime of structure formation in modified gravity. We also perform a model-independent principal component analysis on the free functions introduced into the field equations by modified gravity, mu and Sigma. We find that 20--30 modes of the free functions will be `well-constrained' by our combination of observables, the lower and upper limits dependent on the criteria used to define the `goodness' of the constraint. These constraints are found to be robust to uncertainties in the time-dependence of the bias. Our analysis reveals that our observables are sensitive primarily to temporal variations in Sigma and scale variations in mu. We argue that the inclusion of 21 cm intensity maps will significantly improve constraints on any cosmological deviations from General Relativity in large-scale structure in a very cost-effective manner.
description: 26 pages, 8 figures. Added section on general bias, conclusions unchanged. Matches published version
Predicting the tau strange branching ratios and implications for V_{us}
Creators: name: Antonelli, Mario
name: Cirigliano, Vincenzo
name: Lusiani, Alberto
name: Passemar, Emilie
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Hadronic tau decays provide several ways to extract the Cabbibo-Kobashi-Maskawa (CKM) matrix element V_{us}. The most precise determination involves using inclusive tau decays and requires as input the total branching ratio into strange final states. Recent results from B-factories have led to a discrepancy of about 3.4 sigma from the value of V_{us} implied by CKM unitarity and direct determination from Kaon semi-leptonic modes. In this paper we predict the three leading strange tau branching ratios, using dispersive parameterizations of the hadronic form factors and taking as experimental input the measured Kaon decay rates and the tau -> K pi nu_tau decay spectrum. We then use our results to reevaluate V_{us}, for which we find |V_{us}|=0.2207 \pm 0.0027, in better agreement with CKM unitarity.
description: 20 pages, 3 figures
Model Reduction with MapReduce-enabled Tall-and-Skinny Singular Value Decomposition
Creators: name: Constantine, Paul G.
name: Gleich, David F.
name: Hou, Yangyang
name: Templeton, Jeremy
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We present a method for computing reduced-order models of parameterized partial differential equation solutions. The key analytical tool is the singular value expansion of the parameterized solution, which we approximate with a singular value decomposition of a parameter snapshot matrix. To evaluate the reduced-order model at a new parameter, we interpolate a subset of the right singular vectors to generate the reduced-order model's coefficients. We employ a novel method to select this subset that uses the parameter gradient of the right singular vectors to split the terms in the expansion yielding a mean prediction and a prediction covariance---similar to a Gaussian process approximation. The covariance serves as a confidence measure for the reduce order model. We demonstrate the efficacy of the reduced-order model using a parameter study of heat transfer in random media. The high-fidelity simulations produce more than 4TB of data; we compute the singular value decomposition and evaluate the reduced-order model using scalable MapReduce/Hadoop implementations. We compare the accuracy of our method with a scalar response surface on a set of temperature profile measurements and find that our model better captures sharp, local features in the parameter space.
Geodesic random walks, diffusion processes and Brownian motion on Finsler manifolds
Creators: name: Ma, Tianyu
name: Matveev, Vladimir S.
name: Pavlyukevich, Ilya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We show that geodesic random walks on a complete Finsler manifold of bounded geometry converge to a diffusion process which is, up to a drift, the Brownian motion corresponding to a Riemannian metric.
description: 32 pages, 3 figures. Comments from reads are welcome
Das Archiv der Regensburgischen Botanischen Gesellschaft: Bestände und Benutzung
Creators: name: Ilg, Wolfgang
name: Schweikl, Gabriele
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: archive, botanical society
subject: 580 Pflanzen (Botanik)

description: Die Regensburgische Botanische Gesellschaft wurde bereits im Jahre 1790 gegründet und gilt damit als älteste noch existierende botanische Gesellschaft der Welt. Das Archiv der Gesellschaft wurde von Anbeginn an geführt und birgt eine Vielzahl unterschiedlichster Dokumente, darunter Reden, Protokolle, Manuskripte, Expeditionsberichte, Druckwerke und Bildmaterial, dabei handelt es sich um insgesamt 34 000 Einzelseiten. Auch die wissenschaftlichen Unterlagen mehrerer Vorsitzender der Gesellschaft aus den Jahren 1870 bis 2001 sind enthalten, sowie die Nachlässe der Wissenschaftler Anton de Bary und Karl Mägdefrau. Diese verschaffen dem Archiv eine Bedeutung, die weit über das eines üblichen naturwissenschaftlichen Vereins hinausgeht. Von besonderem Wert sind die rund 4 000 Briefe von Botanikern, darunter viele von den Autoren der von der Gesellschaft herausgegebenen Zeitschriften ‚Botanische Zeitung‘ und ‚Flora‘ aus dem 19. Jahrhundert. Der Archivbestand ist zu einem großen Teil über den deutschen Verbundkatalog "Kalliope - Nachlässe und Autographen" erschlossen, die neu hinzukommenden Digitalisate werden mit den entsprechenden Aufnahmen dort verknüpft. Auf die Recherche nach den Dokumenten in Kalliope wird kurz eingegangen.
First-principles derivation and properties of density-functional average-atom models
Creators: name: Callow, Timothy J.
name: Hansen, Stephanie B.
name: Kraisler, Eli
name: Cangi, Attila
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Finite-temperature Kohn--Sham density-functional theory (KS-DFT) is a widely-used method in warm dense matter (WDM) simulations and diagnostics. Unfortunately, full KS-DFT-molecular dynamics models scale unfavourably with temperature and there remains uncertainty regarding the performance of existing approximate exchange-correlation (XC) functionals under WDM conditions. Of particular concern is the expected explicit dependence of the XC functional on temperature, which is absent from most approximations. Average-atom (AA) models, which significantly reduce the computational cost of KS-DFT calculations, have therefore become an integral part of WDM modelling. In this paper, we present a derivation of a first-principles AA model from the fully-interacting many-body Hamiltonian, carefully analysing the assumptions made and terms neglected in this reduction. We explore the impact of different choices within this model -- such as boundary conditions and XC functionals -- on common properties in WDM, for example equation-of-state data, ionization degree and the behaviour of the frontier energy levels. Furthermore, drawing upon insights from ground-state KS-DFT, we discuss the likely sources of error in KS-AA models and possible strategies for mitigating such errors.
description: To be published in Physical Review Research. 29 pages, 15 figures. Derivation of Hamiltonian clarified since v3 and added appendix B on computation of free energy
Orbital transformations to reduce the 1-norm of the electronic structure Hamiltonian for quantum computing applications
Creators: name: Koridon, Emiel
name: Yalouz, Saad
name: Senjean, Bruno
name: Buda, Francesco
name: O'Brien, Thomas E.
name: Visscher, Lucas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Reducing the complexity of quantum algorithms to treat quantum chemistry problems is essential to demonstrate an eventual quantum advantage of Noisy-Intermediate Scale Quantum (NISQ) devices over their classical counterpart. Significant improvements have been made recently to simulate the time-evolution operator $U(t) = e^{i\mathcal{\hat{H}}t}$ where $\mathcal{\hat{H}}$ is the electronic structure Hamiltonian, or to simulate $\mathcal{\hat{H}}$ directly (when written as a linear combination of unitaries) by using block encoding or "qubitization" techniques. A fundamental measure quantifying the practical implementation complexity of these quantum algorithms is the so-called "1-norm" of the qubit-representation of the Hamiltonian, which can be reduced by writing the Hamiltonian in factorized or tensor-hypercontracted forms for instance. In this work, we investigate the effect of classical pre-optimization of the electronic structure Hamiltonian representation, via single-particle basis transformation, on the 1-norm. Specifically, we employ several localization schemes and benchmark the 1-norm of several systems of different sizes (number of atoms and active space sizes). We also derive a new formula for the 1-norm as a function of the electronic integrals, and use this quantity as a cost function for an orbital-optimization scheme that improves over localization schemes. This paper gives more insights about the importance of the 1-norm in quantum computing for quantum chemistry, and provides simple ways of decreasing its value to reduce the complexity of quantum algorithms.
Equivalence-Singularity Dichotomy in Markov Measures
Creators: name: Avraham-Re'em, Nachi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J10, 28A35, 60F20

description: We establish an equivalence-singularity dichotomy for a large class of one-dimensional Markov measures. Our approach is new in that we deal with one-sided and two-sided chains simultaneously, and in that we do not appeal to any 0-1 law. In fact we deduce a new 0-1 law from the dichotomy.
description: 16 pages
Systematics in Metallicity Gradient Measurements I : Angular Resolution, Signal-to-Noise and Annuli Binning
Creators: name: Yuan, T. -T.
name: Kewley, L. J.
name: Rich, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: With the rapid progress in metallicity gradient studies at high-redshift, it is imperative that we thoroughly understand the systematics in these measurements. This work investigates how the [NII]/Halpha ratio based metallicity gradients change with angular resolution, signal-to-noise (S/N), and annular binning parameters. Two approaches are used: 1. We downgrade the high angular resolution integral-field data of a gravitationally lensed galaxy and re-derive the metallicity gradients at different angular resolution; 2. We simulate high-redshift integral field spectroscopy (IFS) observations under different angular resolution and S/N conditions using a local galaxy with a known gradient. We find that the measured metallicity gradient changes systematically with angular resolution and annular binning. Seeing-limited observations produce significantly flatter gradients than higher angular resolution observations. There is a critical angular resolution limit beyond which the measured metallicity gradient is substantially different to the intrinsic gradient. This critical angular resolution depends on the intrinsic gradient of the galaxy and is < 0.02 arcsec for our simulated galaxy. We show that seeing-limited high-redshift metallicity gradients are likely to be strongly affected by resolution-driven gradient flattening. Annular binning with a small number of annuli produces a more flattened gradient than the intrinsic gradient due to weak line smearing. For 3-annuli bins, a minimum S/N of ~ 5 on the [NII] line is required for the faintest annulus to constrain the gradients with meaningful errors.
description: 8 pages, 9 figures, ApJ accepted
Encoding strongly-correlated many-boson wavefunctions on a photonic quantum computer: application to the attractive Bose-Hubbard model
Creators: name: Yalouz, Saad
name: Senjean, Bruno
name: Miatto, Filippo
name: Dunjko, Vedran
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Variational quantum algorithms (VQA) are considered as some of the most promising methods to determine the properties of complex strongly correlated quantum many-body systems, especially from the perspective of devices available in the near term. In this context, the development of efficient quantum circuit ansatze to encode a many-body wavefunction is one of the keys for the success of a VQA. Great efforts have been invested to study the potential of current quantum devices to encode the eigenstates of fermionic systems, but little is known about the encoding of bosonic systems. In this work, we investigate the encoding of the ground state of the (simple but rich) attractive Bose-Hubbard model using a Continuous-Variable (CV) photonic-based quantum circuit. We introduce two different ansatz architectures and demonstrate that the proposed continuous variable quantum circuits can efficiently encode (with a fidelity higher than 99%) the strongly correlated many-boson wavefunction with just a few layers, in all many-body regimes and for different number of bosons and initial states. Beyond the study of the suitability of the ansatz to approximate the ground states of many-boson systems, we also perform initial evaluations of the use of the ansatz in a variational quantum eigensolver algorithm to find it through energy minimization. To this end we also introduce a scheme to measure the Hamiltonian energy in an experimental system, and study the effect of sampling noise.
Understanding Event-Generation Networks via Uncertainties
Creators: name: Bellagente, Marco
name: Haußmann, Manuel
name: Luchmann, Michel
name: Plehn, Tilman
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Following the growing success of generative neural networks in LHC simulations, the crucial question is how to control the networks and assign uncertainties to their event output. We show how Bayesian normalizing flow or invertible networks capture uncertainties from the training and turn them into an uncertainty on the event weight. Fundamentally, the interplay between density and uncertainty estimates indicates that these networks learn functions in analogy to parameter fits rather than binned event counts.
description: 24 pages
Fragment-based Time-dependent Density-functional Theory
Creators: name: Mosquera, Martin A.
name: Jensen, Daniel
name: Wasserman, Adam
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Using the Runge-Gross theorem that establishes the foundation of Time-dependent Density Functional Theory (TDDFT) we prove that for a given electronic Hamiltonian, choice of initial state, and choice of fragmentation, there is a unique single-particle potential (dubbed time-dependent partition potential) which, when added to each of the pre-selected fragment potentials, forces the fragment densities to evolve in such a way that their sum equals the exact molecular density at all times. This uniqueness theorem suggests new ways of computing time-dependent properties of electronic systems via fragment-TDDFT calculations. We derive a formally exact relationship between the partition potential and the total density, and illustrate our approach on a simple model system for binary fragmentation in a laser field.
description: 5 pages, 2 figures
title: THE IMPACTS OF IMAZAPIC ON GARLIC MUSTARD AND NON-TARGET FOREST FLOOR VEGETATION IN CENTRAL KENTUCKY’S HARDWOOD FORESTS
Creators: name: Podapati, Pavan
Publisher: name: University of Kentucky Libraries
Year: 2021
Subjects: subject: FOS: Earth and related environmental sciences
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Alliaria petiolata is an invasive biennial herb that poses a substantial threat to various ecosystems across the United States. Imazapic herbicide can control A. petiolata infestations, but there is limited peer-reviewed data on impacts of pre-emergent imazapic spraying to forest floor communities. This research examined the impacts of pre-emergent imazapic (0.84 kg/ha) with Pentra-Bark® surfactant on ground cover of A. petiolata and the spring perennials Claytonia virginica and Erigenia bulbosa. Experimental populations in randomized blocks within two forest stands in central Kentucky received the following treatments at 0.84 kg ai/ha: imazapic with Pentra-Bark®, glyphosate with Pentra-Bark®, Pentra-Bark® alone, and a control with no herbicide. Imazapic treatments significantly reduced ground cover of all tested species, while other herbicidal treatments led to no significant ground cover responses. Imazapic treatments did not always eliminate these species from experimental units, although some C. virginica and E. bulbosa individuals exhibited superficial injury. These findings suggest imazapic (0.84 kg/ha) with Pentra-Bark® surfactant is highly effective against A. petiolata, but may also harm some non-target forest floor plants. Additional research is required to determine impacts at other application rates to these and other non-target forest floor plant species.
description: © 2021 Pavan Kumar Podapati
Describing High-Order Statistical Dependence Using "Concurrence Topology", with Application to Functional MRI Brain Data
Creators: name: Ellis, Steven P.
name: Klein, Arno
Publisher: name: arXiv
Year: 2012
Subjects: subject: Methodology (stat.ME)
subject: Algebraic Topology (math.AT)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 62H17, 92C55, 62M15

description: For multivariate data, dependence beyond pair-wise can be important. This is true, for example, in using functional MRI (fMRI) data to investigate brain functional connectivity. When one has more than a few variables, however, the number of simple summaries of even third-order dependence can be unmanageably large. "Concurrence topology" is an apparently new nonparametric method for describing high-order dependence among up to dozens of dichotomous variables (e.g., seventh-order dependence in 32 variables). This method generally produces summaries of $p^{th}$-order dependence of manageable size no matter how big $p$ is. (But computing time can be lengthy.) For time series, this method can be applied in both the time and Fourier domains. Write each observation as a vector of 0's and 1's. A "concurrence" is a group of variables all "1" in the same observation. The collection of concurrences can be represented as a sequence of shapes ("filtration"). Holes in the filtration indicate weak or negative association among the variables. The pattern of the holes in the filtration can be analyzed using computational topology. This method is demonstrated on dichotomized fMRI data. The dataset includes subjects diagnosed with ADHD and healthy controls. In an exploratory analysis numerous group differences in the topology of the filtrations are found.
description: 20 pages, 3 figures
On the many-field f(R) brane
Creators: name: Bazeia, D.
name: Menezes, R.
name: Petrov, A. Yu.
name: da Silva, A. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the Randall-Sundrum braneworld theory with a single extra dimension of infinite extent to investigate generalized $f(R)$ braneworld models in the presence of several real scalar fields. In particular, we solve the modified Einstein equations for the case of flat brane, with zero cosmological constant, and for the case of bent brane, with a nonvanishing cosmological constant. In both cases we found explicit solutions for the scalar fields with analytical expressions for the respective warp factors.
description: 9 pages, version published in PLB
Atelocynus Cabrera 1940
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Canidae
Atelocynus

description: Atelocynus Cabrera, 1940. Notas Mus. La Plata 5:14. TYPE SPECIES: Canis microtis Sclater, 1883, by original designation. COMMENTS: See comments under Dusicyon. Placed in Atelocynus by Cabrera (1931, 1958), Langguth (1975), Stains (1975), and Berta (1985, 1986, 1988). Van Gelder (1978) considered Atelocynus a subgenus of Canis.
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 279, DOI: 10.5281/zenodo.7359191
description: {"references": ["Cabrera, A. 1931. On some South American canine genera. Journal of Mammalogy, 12: 54 - 67.", "Cabrera, A. 1958. Dos felidos argentinos ineditos (Mammalia, Carnivora). Neotropica, 3 (12): 70 - 72.", "Langguth, A. 1975. Ecology and evolution in the South American canids. Pp. 192 - 206, in The wild canids: Their systematics, behavioral ecology, and evolution (M. W. Fox, ed.). Van Nostrand Reinhold Company, New York, NY, 508 pp.", "Stains, H. J. 1975. Distribution and taxonomy of the Canidae, Pp. 3 - 26, in The wild canids: Their systematics, behavorial ecology and evolution (M. W. Fox, ed.). Van Nostrand Reinhold Company, New York, NY, 508 pp.", "Berta, A. 1985. The status of Smilodon in North and South America. Contributions in Science, Natural History Museum of Los Angeles County, 370: 1 - 15.", "Van Gelder, R. G. 1978. A review of canid classification. American Museum Novitates, 2646: 1 - 10."]}
Heavy neutrino search in accelerator-based experiments
Creators: name: Asaka, Takehiko
name: Eijima, Shintaro
name: Watanabe, Atsushi
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We explore the feasibility of detecting heavy neutrinos by the existing facilities of neutrino experiments. A heavy neutrino in the mass range 1 MeV < M < 500 MeV is produced by pion or kaon decay, and decays to charged particles which leave signals in neutrino detectors. Taking the T2K experiment as a typical example, we estimate the heavy neutrino flux produced in the neutrino beam line. Due to massive nature of the heavy neutrino, the spectrum of the heavy neutrino is significantly different from that of the ordinary neutrinos. While the ordinary neutrinos are emitted to various directions in the laboratory frame due to their tiny masses, the heavy neutrinos tend to be emitted to the forward directions and frequently hit the detector.The sensitivity for the mixing parameters is studied by evaluating the number of signal events in the near detector ND280. For the electron-type mixing, the sensitivity of T2K at 10^{21} POT is found to be better than that of the previous experiment PS191, which has placed the most stringent bounds on the mixing parameters of the heavy neutrinos for 140 MeV< M < 500 MeV.
description: 26 pages, 17 figures
Herschel/HIFI search for H2-17O and H2-18O in IRC+10216: constraints on models for the origin of water vapor
Creators: name: Neufeld, David A.
name: Tolls, Volker
name: Agúndez, Marcelino
name: González-Alfonso, Eduardo
name: Decin, Leen
name: Daniel, Fabien
name: Cernicharo, José
name: Melnick, Gary J.
name: Schmidt, Miroslaw
name: Szczerba, Ryszard
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the results of a sensitive search for the minor isotopologues of water, H2-17O and H2-18O, toward the carbon-rich AGB star IRC+10216 (a.k.a. CW Leonis) using the HIFI instrument on the Herschel Space Observatory. This search was motivated by the fact that any detection of isotopic enhancement in the H2-17O and H2-18O abundances would have strongly implicated CO photodissociation as the source of the atomic oxygen needed to produce water in a carbon-rich circumstellar envelope. Our observations place an upper limit of 1/470 on the H2-17O/H2-16O abundance ratio. Given the isotopic 17O/16O ratio of 1/840 inferred previously for the photosphere of IRC+10216, this result places an upper limit of a factor 1.8 on the extent of any isotope-selective enhancement of H2-17O in the circumstellar material, and provides an important constraint on any model that invokes CO photodissociation as the source of O for H2O production. In the context of the clumpy photodissociation model proposed previously for the origin of water in IRC+10216, our limit implies that 12C-16O (not 13C-16O or SiO) must be the dominant source of 16O for H2O production, and that the effects of self-shielding can only have reduced the 12C-16O photodissociation rate by at most a factor ~ 2.
description: 14 pages, 4 figures, accepted for publication in ApJ Letters
HCMS: Hierarchical and Conditional Modality Selection for Efficient Video Recognition
Creators: name: Weng, Zejia
name: Wu, Zuxuan
name: Li, Hengduo
name: Chen, Jingjing
name: Jiang, Yu-Gang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Videos are multimodal in nature. Conventional video recognition pipelines typically fuse multimodal features for improved performance. However, this is not only computationally expensive but also neglects the fact that different videos rely on different modalities for predictions. This paper introduces Hierarchical and Conditional Modality Selection (HCMS), a simple yet efficient multimodal learning framework for efficient video recognition. HCMS operates on a low-cost modality, i.e., audio clues, by default, and dynamically decides on-the-fly whether to use computationally-expensive modalities, including appearance and motion clues, on a per-input basis. This is achieved by the collaboration of three LSTMs that are organized in a hierarchical manner. In particular, LSTMs that operate on high-cost modalities contain a gating module, which takes as inputs lower-level features and historical information to adaptively determine whether to activate its corresponding modality; otherwise it simply reuses historical information. We conduct extensive experiments on two large-scale video benchmarks, FCVID and ActivityNet, and the results demonstrate the proposed approach can effectively explore multimodal information for improved classification performance while requiring much less computation.
description: 18 pages, 7 figures
Method and system for characterizing a focusing optical element
Creators: name: Banzer, Peter
name: Eismann, Jörg
name: Neugebauer, Martin
Publisher: name: Zenodo
Year: 2022
Subjects: optics
microscope objective
characterization
focusing
nanoparticle

description: Publication specification of the international patent application WO 2022/171289 A1 (WO2022171289A1). https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2022171289 The invention describes an absolute characterization method for focusing optical elements. This method requires no precalibrated reference object, and can be used, among others, for the characterization of high numerical aperture microscope objectives. Parts of this method and system are used in the following scientific publication: J. S. Eismann, M. Neugebauer, K. Mantel, and P. Banzer, Absolute characterization of high numerical aperture microscope objectives utilizing a dipole scatterer, Light: Science & Applications 10, 223 (2021). https://doi.org/10.1038/s41377-021-00663-x
Supplementary document for Reliable micro-transfer printing method for heterogeneous integration of lithium niobate and semiconductor thin films - 6400811.pdf
Creators: name: Vandekerckhove, Tom
name: Vanackere, Tom
name: De Witte, Jasper
name: Cuyvers, Stijn
name: Reis, Luis
name: Billet, Maximilien
name: Roelkens, Gunther
name: Clemmen, Stéphane
name: Kuyken, Bart
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplement 1