cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The false vacuum bubble nucleation due to a nonminimally coupled scalar field
Creators: name: Lee, Wonwoo
name: Lee, Bum-Hoon
name: Lee, Chul H.
name: Park, Chanyong
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the possibility of forming the false vacuum bubble nucleated within the true vacuum background via the true-to-false vacuum phase transition in curved spacetime. We consider a semiclassical Euclidean bubble in the Einstein theory of gravity with a nonminimally coupled scalar field. In this paper we present the numerical computations as well as the approximate analytical computations. We mention the evolution of the false vacuum bubble after nucleation.
description: 23 pages, 12 figures, References added, minor correction
Progress on the calibration of surface brightness-color relations for early- and late-type stars
Creators: name: Salsi, Anthony
name: Nardetto, Nicolas
name: Mourard, Denis
name: Graczyk, Dariusz
name: Taormina, Monica
name: Creevey, Orlagh
name: Hocdé, Vincent
name: Morand, Frédéric
name: Perraut, Karine
name: Pietrzynski, Grzegorz
name: Schaefer, Gail H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Surface brightness-color relations (SBCRs) are used for estimating angular diameters and deriving stellar properties. They are critical to derive extragalactic distances of early-type and late-type eclipsing binaries or, potentially, for extracting planetary parameters of late-type stars hosting planets. Various SBCRs have been implemented so far, but strong discrepancies in terms of precision and accuracy still exist in the literature. We aim to develop a precise SBCR for early-type B and A stars using selection criteria, based on stellar characteristics, and combined with homogeneous interferometric angular diameter measurements. We also improve SBCRs for late-type stars, in particular in the Gaia photometric band. We observed 18 early-type stars with the VEGA interferometric instrument, installed on the CHARA array. We then applied additional criteria on the photometric measurements, together with stellar characteristics diagnostics in order to build the SBCRs. We calibrated a SBCR for subgiant and dwarf early-type stars. The RMS of the relation is $σ_{F_{V_{0}}} = 0.0051\,$mag, leading to an average precision of 2.3% on the estimation of angular diameters, with 3.1% for $V-K < -0.2\,$mag and 1.8% for $V-K > -0.2\,$mag. We found that the conversion between Johnson-$K$ and 2MASS-$K_s$ photometries is a key issue for early-type stars. Following this result, we have revisited our previous SBCRs for late-type stars by calibrating them with either converted Johnson-$K$ or 2MASS-$K_s$ photometries. We also improve the calibration of these SBCRs based on the Gaia photometry. The expected precision on the angular diameter using our SBCRs for late-type stars ranges from 1.0% to 2.7%. By reaching a precision of 2.3% on the estimation of angular diameters for early-type stars, significant progress has been made to determine extragalactic distances using early-type eclipsing binaries.
description: 18 pages Journal ref: AA/2021/40763
The role of OmpF and OmpC porins on the translocation of fluoroquinolones and their metallocomplexes across the outer membrane of E. coli
Creators: name: Saraiva, Raúl G.
name: McCusker, Matthew P.
name: Fanning, Séamus
name: Gameiro, Paula
name: Feio, Maria J.
Publisher: name: F1000 Research Limited
Year: 2019

description: Background: OmpF and OmpC, the major outer membrane porins in E. coli, are believed to play a major role in the internalization of fluoroquinolones. Moreover, the quick development of bacterial resistance to these drugs has led to the need for their constant reinvention, with metalloantibiotics arising as a possible solution.

Methods: A battery of 8 E. coli BL21(DE3) mutants lacking OmpF, OmpC and/or OmpA was extensively characterized by PCR, RT-PCR and Western blotting. MIC values of ciprofloxacin and enrofloxacin were determined against this collection of E. coli mutants by broth microdilution (following CLSI standards, n≥42 from at least 6 independent inocula). Binary copper(II):enrofloxacin and ternary copper(II):enrofloxacin:phenantroline complexes were chemically characterized and their antimicrobial activity was determined.

Results: Molecular biology techniques validate our experimental model. MIC of ciprofloxacin are ~3 times higher in OmpF deficient mutants (p<0.001; no change in OmpC- strains), while MIC of enrofloxacin is ~2 times higher for mutants lacking OmpC (p<0.001), no effect being perceived when OmpF is absent. While the binary metallocomplex of enrofloxacin is not stable at physiological pH, the MIC values of the ternary complex significantly deviate from those of the free enrofloxacin.

Conclusions: The fluoroquinolones tested depend differently on the different porins, with ciprofloxacin favoring OmpF for its translocation, whereas enrofloxacin generally favors OmpC. The route of internalization of the Cu(II):enro:phe complex differs from that of enrofloxacin alone. Furthermore, our preliminary data shows that some clinical isolates exhibit much higher sensitivity to the ternary complex than to the free quinolone. The overall results are quite encouraging and suggest that the study of the ternary copper complex as a potential new antibacterial agent is worth pursuing.
Additional file 14 of L-plastin Ser5 phosphorylation is modulated by the PI3K/SGK pathway and promotes breast cancer cell invasiveness
Creators: name: Machado, Raquel A. C.
name: Stojevski, Dunja
name: Landtsheer, Sébastien De
name: Lucarelli, Philippe
name: Baron, Alexandre
name: Sauter, Thomas
name: Schaffner-Reckinger, Elisabeth
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Plant Biology

description: Additional file 13: Figure S2. The graphs show the ratio between the intensities obtained for phosphorylated (activated) protein versus total protein. Each ratio was then normalized to the mean of all the ratios obtained for one blot to make blots comparable by accounting for technical day-to-day variability. For representative purposes, data were scaled to the controls present on each blot and are represented as means +/- SEM of three independent experiments.
Zeldovich Lambda and Weinberg Relation: An Explanation for the Cosmological Coincidences
Creators: name: Alfonso-Faus, Antonio
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In 1937 Dirac proposed the large number hypothesis (LNH). The idea was to explain that these numbers were large because the Universe is old. A time variation of certain constants was assumed. So far, no experimental evidence has significantly supported this time variation. Here we present a simplified cosmological model. We propose a new cosmological system of units, including a cosmological Planck constant that absorbs the well known large number 10120. With this new Planck constant no large numbers appear at the cosmological level. They appear at lower levels, e.g. at the quantum world. We note here that Zeldovich formula, for the cosmological constant, is equivalent to the Weinberg relation. The immediate conclusion is that the speed of light c must be proportional to the Hubble parameter H, and therefore decrease with time. We find that the gravitational radius of the Universe and its size are one and the same constant (Mach principle). The usual cosmological omega parameters for mass, lambda and curvature turn out to be all constants of order one. The anthropic principle is not necessary in this theory. It is shown that a factor of 1061converts in this theory a Planck fluctuation (a quantum black hole) into a cosmological quantum black hole: the Universe today. General relativity and quantum mechanics give the same local solution of an expanding Universe with the law const. t. This constant is just the speed of light today. Then the Hubble parameter is exactly H = 1/t.
description: 16 pages. Published in "Astrophysics and Space Science"
From noise to information: The transfer function formalism for uncertainty quantification on nuclear density reconstruction
Creators: name: Pablo, Giuliani
name: Jorge, Piekarewicz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The neutron distribution of neutron-rich nuclei provides critical information on the structure of finite nuclei and neutron stars. Parity violating experiments -- such as PREX and CREX -- provide a clean and largely model-independent determination of neutron densities. Such experiments, however, are challenging and expensive which is why sound statistical arguments are required to maximize the information gained. For this goal we introduce a new framework, "the transfer function formalism", aimed at uncertainty quantification, model selection, and experimental design in the context of neutron densities. The transfer functions (TFs) are built analytically by expressing the linear response of the objective function to small perturbations of the data. Using the TF formalism, we are able to analyze the expected overall uncertainty -- quantified in terms of bias and variance -- of the mean square radius and interior density of $^{48}$Ca and $^{208}$Pb. Using relativistic mean field models as a proxy for the weak-charge density -- and assuming that a total of five measurements could be performed on the weak form factor of $^{48}$Ca and $^{208}$Pb -- we identify the optimal models and experimental locations that minimize the combined radius and interior uncertainty for both nuclei. We also explore the use of the TF formalism to understand the influence of prior distributions for the model parameters, as well as the optimization of model hyperparameters not constrained by the data.
Additional file 15 of L-plastin Ser5 phosphorylation is modulated by the PI3K/SGK pathway and promotes breast cancer cell invasiveness
Creators: name: Machado, Raquel A. C.
name: Stojevski, Dunja
name: Landtsheer, Sébastien De
name: Lucarelli, Philippe
name: Baron, Alexandre
name: Sauter, Thomas
name: Schaffner-Reckinger, Elisabeth
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Plant Biology

description: Additional file 14: Figure S3. A total of 2 μg recombinant full-length MDM2 was incubated with 100 ng recombinant kinase and with 50 μM ATP in a reaction volume of 25 μl. A negative control reaction (CTRL) was performed by omitting a kinase. MDM2 Ser166 phosphorylation (red) and total MDM2 (green) were determined by immunoblot analysis.
Relativity theory does not imply that the future already exists: a counterexample
Creators: name: Sorkin, Rafael D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is often said that the relativistic fusion of time with space rules out genuine change or ``becoming''. I offer the classical sequential growth models of causal set theory as counterexamples.
description: plainTeX, 12 pages, no figures. To appear in Vesselin Petkov (editor), Relativity and the Dimensionality of the World (Springer 2007, in press). Most current version is available at http://www.physics.syr.edu/~sorkin/some.papers (or wherever my home-page may be)
Chiral logarithms to five loops
Creators: name: Bissegger, Moritz
name: Fuhrer, Andreas
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate two specific Green functions in the framework of chiral perturbation theory. We show that, using analyticity and unitarity, their leading logarithmic singularities can be evaluated in the chiral limit to any desired order in the chiral expansion, with a modest calculational cost. The claim is illustrated with an evaluation of the leading logarithm for the scalar two-point function to five-loop order.
description: 13 pages, 5 figures
Additional file 2 of L-plastin Ser5 phosphorylation is modulated by the PI3K/SGK pathway and promotes breast cancer cell invasiveness
Creators: name: Machado, Raquel A. C.
name: Stojevski, Dunja
name: Landtsheer, Sébastien De
name: Lucarelli, Philippe
name: Baron, Alexandre
name: Sauter, Thomas
name: Schaffner-Reckinger, Elisabeth
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Plant Biology

description: Additional file 1: Figure S1. Full-length blots corresponding to the immunoblots presented in Figures 1B, 1C, 3A, 3B, 3C, 4A, 4B, 4E, 4F, 6A, 6B and 6C.
Nearly scale-invariant curvature modes from entropy perturbations during graceful exit
Creators: name: Ijjas, Anna
name: Kolevatov, Roman
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this Letter, we describe how a spectrum of entropic perturbations generated during a period of slow contraction can source a nearly scale-invariant spectrum of curvature perturbations on length scales larger than the Hubble radius during the transition from slow contraction to a classical non-singular bounce (the `graceful exit' phase). The sourcing occurs naturally through higher-order scalar field kinetic terms common to classical (non-singular) bounce mechanisms. We present a concrete example in which, by the end of the graceful exit phase, the initial entropic fluctuations have become negligible and the curvature fluctuations have a nearly scale-invariant spectrum with an amplitude consistent with observations.
description: 6 pages, 2 figures
Microlensing in phase space II: Correlations analysis
Creators: name: Tuntsov, Artem V.
name: Lewis, Geraint F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Applications of the phase space approach to the calculation of the microlensing autocorrelation function are presented. The continuous propagation equation for a random star field with a Gaussian velocity distribution is solved in the leading non-trivial approximation using the perturbation technique. It is shown that microlensing modulations can be important in the interpretation of optical and shorter-wavelength light curves of pulsars, power spectra of active galactic nuclei and coherence estimates for quasi-periodic oscillations of dwarf novae and low-mass X-ray binaries. Extra scatter in the brightness of type Ia supernovae due to gravitational microlensing is shown to be of order up to 0.2 stellar magnitudes depending on the extent of the light curves.
description: Accepted for publication in MNRAS. 17 pages, 8 figures. The first part of this little series is available at http://www.arxiv.org/abs/astro-ph/0604302 . Replaced to add a link to the first part
[Sentence, phrase, and lexical elicitation]
Creators: name: Cuevas Cortés, Margarita
name: Jiménez García, Otelia
name: Macaulay, Monica
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: Chalcatongo de Hidalgo Mixtec language

description: Work with Margarita Cuevas begins midway through file 003 (Tape 32, Side A). See pages 5-16 of associated field notes.
Direct reactions in/for astrophysics
Creators: name: Bertulani, C. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Precise nuclear reaction rates are needed for a detailed description of the production of elements in primordial nucleosynthesis and during the hydrostatic burning of stars to constrain the astrophysical models. The relevant reactions are extremely difficult to measure directly in the laboratory at the small astrophysical energies. In recent years direct reactions methods have been developed and applied to extract low-energy astrophysical S factors. The application of these methods requires a combination of experimental and theoretical efforts. This contribution focuses on the underlying reaction theories that have to be well understood in order to assess the precision and limitations of the various approaches.
description: Invited talk presented at the conference "Nuclei in the Cosmos IX", CERN, Switzerland, 25-30 June 2006
Muonium reactions with aromatics
Creators: name: Wu, Zhennan
Publisher: name: University of British Columbia
Year: 2009

description: Positive muons are produced at TRIUMF as pion decay products and form muo nium atoms in media such as water during their two microsecond lifetime. Muo niuin is a hydrogen—like atom with virtually the same Bohr radius and ionization energy as 1H, 2H and 3H, but with a mass one—ninth that of 1H. Its reactions toward solutes are studied by μSR (the muon spin rotation) and LCR (muon level crossing resonance spectroscopy). In this thesis, the reactions of mnuonium with some substituted aromnatics and N-heterocyclic compounds were studied. Reaction rate constants were measured in many cases, and products were identified as mnuonated free radicals formed by muonium addition to a ring-C. Muon hyperfine coupling constants of some muonated cyclohexadienyl-type radicals and all muonated mono- and diazine radicals studied here were determined. The LCR spectra of muonated radicals were recorded and the resonance signals were assigned to particular nuclei of these radicals. Radical isomer distributions and partial rate constants for mono substituted benzenes and N-heterocyclic compounds were estimated. π-electron densities and radical localization energies of neutral aromnatics were calculated by the Huckel MO method. For N-containing compounds LUMO levels as well as these parameters were also calculated by the same method. It was found that there exists a good correlation between partial rate constants and radical localization energies, which implies that muonium addition rates in these systems are mainly governed by an activation barrier proportional to the radical localization energies of the reactants.
From soft Dirac monopoles to the Dirac equation
Creators: name: Faber, Manfried
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In the model of topological particles we have four types of topologically stable dual Dirac monopoles with soft core and finite mass. We discuss the steps how to get a Dirac equation for these particles. We show for the free and the interacting case that we arrive at the Dirac equation in the limit, where the soft solitons approach singular dual Dirac monopoles.
Computational Difficulty of Global Variations in the Density Matrix Renormalization Group
Creators: name: Eisert, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The density matrix renormalization group (DMRG) approach is arguably the most successful method to numerically find ground states of quantum spin chains. It amounts to iteratively locally optimizing matrix-product states, aiming at better and better approximating the true ground state. To date, both a proof of convergence to the globally best approximation and an assessment of its complexity are lacking. Here we establish a result on the computational complexity of an approximation with matrix-product states: The surprising result is that when one globally optimizes over several sites of local Hamiltonians, avoiding local optima, one encounters in the worst case a computationally difficult NP-hard problem (hard even in approximation). The proof exploits a novel way of relating it to binary quadratic programming. We discuss intriguing ramifications on the difficulty of describing quantum many-body systems.
description: 5 pages, 1 figure, RevTeX, final version
Studies on plant cell cultures of Podophyllum Peltatum and Tripterygium Wilfordii for biosynthesis of biologically active compounds
Creators: name: Kuri-Brena, Francisco
Publisher: name: University of British Columbia
Year: 2009

description: This thesis investigates the use of plant cell cultures in combination with synthetic chemistry to provide new routes to biologically active compounds. The first chapter consists of approaches to the lignan podophyllotoxin (4), by means of enzyme catalyzed ring closure reactions of dibenzylbutyrolactone intermediates 56 and 57 mediated by Podophyllum peltatum cells. The substrates 56 and 57 studied were synthesized from readily available aromatic aldehydes employing a "one pot", 1,4addition- enolate alkylation sequence, as the key step. Semi-continuous biotransformation experiments performed with 56 illustrate the potential of the technique yielding the ring-closed products 75 and 76. A possible mechanism for the ring closure in vivo is provided, as well as suggestions to alter the stereochemical outcome of the process. The second chapter of this thesis concerns the attempts to oxidize dehydroisoabietanolide (132) with crude enzyme preparations (CFEs) from Tripterygium wilfordii, as part of an ongoing study regarding the biogenesis of the diterpcne triepoxides tripdiolide (5) and triptolide (91). The 12-hydroxy analogue of 132, isotriptophenolide (190), is also studied. Both compounds were prepared in gram quantities from dehydroabietic acid (122). The results from the biotransformation experiments, suggest that triptophenolide (163), an isomer of 190 and bearing a phenolic group at C-14, is a likely candidate for future biotransformation experiments. The present studies also suggest that an "activated" diterpene, that is, a substrate bearing a hydroxyl group in the aromatic ring (190 or an isomer), is a biogenetic precursor for the triepoxide system present in 5 and 91.
Comparison of Supernovae datasets Constraints on Dark Energy
Creators: name: Zhang, Chengwu
name: Xu, Lixin
name: Chang, Baorong
name: Liu, Hongya
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Cosmological measurements suggest that our universe contains a dark energy component. In order to study the dark energy evolution, we constrain a parameterized dark energy equation of state $w(z)=w_0 + w_1 \frac{z}{1+z}$ using the recent observational datasets: 157 Gold type Ia supernovae and the newly released 182 Gold type Ia supernovae by maximum likelihood method. It is found that the best fit $w(z)$ crosses -1 in the past and the present best fit value of $w(0)
description: Chinese Physics Letter Vol.24, no.5 2007,1425-1428
Evolution of populations with strategy-dependent time delays
Creators: name: Miȩkisz, Jacek
name: Bodnar, Marek
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Dynamical Systems (math.DS)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: We study effects of strategy-dependent time delays on equilibria of evolving populations. It is well known that time delays may cause oscillations in dynamical systems. Here we report a novel behavior. We show that microscopic models of evolutionary games with strategy-dependent time delays lead to a new type of replicator dynamics. It describes the time evolution of fractions of the population playing given strategies and the size of the population. Unlike in all previous models, stationary states of such dynamics depend continuously on time delays. We show that in games with an interior stationary state (a globally asymptotically stable equilibrium in the standard replicator dynamics), at certain time delays, it may disappear or there may appear another interior stationary state. In the Prisoner's Dilemma game, for time delays of cooperation smaller than time delays of defection, there appears an ustable interior equilibrium and therefore for some initial conditions, the population converges to the homogeneous state with just cooperators.
Reconstructing the universe history, from inflation to acceleration, with phantom and canonical scalar fields
Creators: name: Elizalde, Emilio
name: Nojiri, Shin'ichi
name: Odintsov, Sergei D.
name: Sáez-Gómez, Diego
name: Faraoni, Valerio
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the reconstruction technique in theories with a single or multiple (phantom and/or canonical) scalar fields. With the help of several examples, it is demonstrated explicitly that the universe expansion history, unifying early-time inflation and late-time acceleration, can be realized in scalar-tensor gravity. This is generalized to the theory of a scalar field coupled non-minimally to the curvature and to a Brans-Dicke-like theory. Different examples of unification of inflation with cosmic acceleration, in which de Sitter, phantom, and quintessence type fields play the fundamental role--in different combinations--are worked out. Specifically, the frame dependence and stability properties of de Sitter space scalar field theory are studied. Finally, for two-scalar theories, the late-time acceleration and early-time inflation epochs are successfully reconstructed, in realistic situations in which the more and more stringent observational bounds are satisfied, using the freedom of choice of the scalar field potential, and of the kinetic factor.
description: 22 pages, revtex, no figures, version to appear in Phys. Rev. D
Ergodic imitation: Learning from what to do and what not to do
Creators: name: Kalinowska, Aleksandra
name: Prabhakar, Ahalya
name: Fitzsimons, Kathleen
name: Murphey, Todd
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: With growing access to versatile robotics, it is beneficial for end users to be able to teach robots tasks without needing to code a control policy. One possibility is to teach the robot through successful task executions. However, near-optimal demonstrations of a task can be difficult to provide and even successful demonstrations can fail to capture task aspects key to robust skill replication. Here, we propose a learning from demonstration (LfD) approach that enables learning of robust task definitions without the need for near-optimal demonstrations. We present a novel algorithmic framework for learning tasks based on the ergodic metric -- a measure of information content in motion. Moreover, we make use of negative demonstrations -- demonstrations of what not to do -- and show that they can help compensate for imperfect demonstrations, reduce the number of demonstrations needed, and highlight crucial task elements improving robot performance. In a proof-of-concept example of cart-pole inversion, we show that negative demonstrations alone can be sufficient to successfully learn and recreate a skill. Through a human subject study with 24 participants, we show that consistently more information about a task can be captured from combined positive and negative (posneg) demonstrations than from the same amount of just positive demonstrations. Finally, we demonstrate our learning approach on simulated tasks of target reaching and table cleaning with a 7-DoF Franka arm. Our results point towards a future with robust, data-efficient LfD for novice users.
description: Kalinowska and Prabhakar contributed equally to this work
Predicted properties of RR Lyrae stars in the SDSS photometric system
Creators: name: Marconi, M.
name: Cignoni, M.
name: Di Criscienzo, M.
name: Ripepi, V.
name: Castelli, F.
name: Musella, I.
name: Ruoppo, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The luminosities and effective temperatures, as well as the whole bolometric lightcurves of nonlinear convective RR Lyrae models with 0.0001
description: accepted for publication in MNRAS
Flows on Graphs with Random Capacities
Creators: name: Antal, T.
name: Krapivsky, P. L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate flows on graphs whose links have random capacities. For binary trees we derive the probability distribution for the maximal flow from the root to a leaf, and show that for infinite trees it vanishes beyond a certain threshold that depends on the distribution of capacities. We then examine the maximal total flux from the root to the leaves. Our methods generalize to simple graphs with loops, e.g., to hierarchical lattices and to complete graphs.
description: 8 pages, 6 figures
Additional file 1 of Markers of disease severity and positive family history are associated to significant risk perception in rheumatoid arthritis, while compliance with therapy is not: a cross-sectional study in 415 Mexican outpatients
Creators: name: Irazú Contreras-Yáñez
name: Lavielle, Pilar
name: Clark, Patricia
name: Pascual-Ramos, Virginia
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy

description: Additional file 1. Comorbid conditions. List of comorbid conditions.
Additional file 2 of Markers of disease severity and positive family history are associated to significant risk perception in rheumatoid arthritis, while compliance with therapy is not: a cross-sectional study in 415 Mexican outpatients
Creators: name: Irazú Contreras-Yáñez
name: Lavielle, Pilar
name: Clark, Patricia
name: Pascual-Ramos, Virginia
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy

description: Additional file 2. The Compliance Questionnaire (CQ). The Compliance Questionnaire (CQ) Spanish and English versions.
Lie algebraic noncommuting structures from reparametrisation symmetry
Creators: name: Gangopadhyay, Sunandan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend our earlier work of revealing both space-space and space-time noncommuting structures in various models in particle mechanics exhibiting reparametrisation symmetry. We show explicitly (in contrast to the earlier results in our paper \cite{sg}) that for some special choices of the reparametrisation parameter $ε$, one can obtain space-space noncommuting structures which are Lie-algebraic in form even in the case of the relativistic free particle. The connection of these structures with the existing models in the literature is also briefly discussed. Further, there exists some values of $ε$ for which the noncommutativity in the space-space sector can be made to vanish. As a matter of internal consistency of our approach, we also study the angular momentum algebra in details.
description: 9 pages Latex, some references added
Additional file 3 of Markers of disease severity and positive family history are associated to significant risk perception in rheumatoid arthritis, while compliance with therapy is not: a cross-sectional study in 415 Mexican outpatients
Creators: name: Irazú Contreras-Yáñez
name: Lavielle, Pilar
name: Clark, Patricia
name: Pascual-Ramos, Virginia
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy

description: Additional file 3. The Risk Perception Questionnaire (RPQ). The Risk Perception Questionnaire (RPQ) Spanish and English versions.
On non-Fermi liquid quantum critical points in heavy fermion metals
Creators: name: Senthil, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Heavy electron metals on the verge of a quantum phase transition to magnetism show a number of unusual non-fermi liquid properties which are poorly understood. This article discusses in a general way various theoretical aspects of this phase transition with an eye toward understanding the non-fermi liquid phenomena. We suggest that the non-Fermi liquid quantum critical state may have a sharp Fermi surface with power law quasiparticles but with a volume not set by the usual Luttinger rule. We also discuss the possibility that the electronic structure change associated with the possible Fermi surface reconstruction may diverge at a different time/length scale from that associated with magnetic phenomena.
description: 16 pages, 2 figures. Proceedings of workshop on ``Mottness and Quantum Criticality", Tobago, West Indies, June 8-19 (2005), to appear in Annals of Physics
Additional file 1 of Low lean mass with obesity in older adults with hypertension: prevalence and association with mortality rate
Creators: name: Qu, Qiang
name: Guo, Qixin
name: Sun, Jinyu
name: Lu, Xinyi
name: Cheang, Iokfai
name: Zhu, Xu
name: Yao, Wenming
name: Li, Xinli
name: Zhang, Haifeng
name: Zhou, Yanli
name: Liao, Shengen
name: Gao, Rongrong
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy
subject: Computational Biology

description: Supplementary Material 1
Additional file 4 of Markers of disease severity and positive family history are associated to significant risk perception in rheumatoid arthritis, while compliance with therapy is not: a cross-sectional study in 415 Mexican outpatients
Creators: name: Irazú Contreras-Yáñez
name: Lavielle, Pilar
name: Clark, Patricia
name: Pascual-Ramos, Virginia
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy

description: Additional file 4. Comparison of unrealistic and realistic patient characteristics, considering ≥6 unfavorable medical criteria. Comparison table of unrealistic and realistic patient characteristics, considering ≥6 unfavorable medical criteria.
Positive and Negative Emotion Regulation Ability Profiles: Links with Strategies, Goals, and Internalizing Symptoms
Creators: name: Naragon-Gainey, Kristin
name: Park, Juhyun
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Clinical Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: An overview of the resources made available in this registration is provided in the README file. Note that this project contains documents for a preregistration as well.
Statistical mechanics of solvation of macroparticles
Creators: name: Vasarhelyi, Reka Z.
Publisher: name: University of British Columbia
Year: 2008

description: Integral equation theories are employed to study the solvation of large particles. The solutions studied consist of spherically symmetric solvent particles which interact through hard sphere and Lennard-Jones potentials, and hard sphere solutes. In particular, the Ornstein-Zernike (O-Z) equation is solved with the hypernetted-chain (HNC) closure, to obtain the pair correlation functions of mixtures at infinite dilution. The pair correlation functions in the O-Z equation and the H N C closure are expressed as power series in solute density to yield a pair of coupled equations which determine the derivatives with respect to solute density of the solvent-solvent pair correlation functions. The latter describe the perturbation of the solvent upon addition of a single solute particle. The derivatives are analysed to yield components that scale as the volume and surface area of the macroparticle, and which are then identified as changes in solvent structure due to the presence of a finite size particle and a flat surface respectively. From the pair correlation functions and their derivatives the excess internal energy, Helmholtz free energy, and entropy of solvation are calculated. The excess quantities are also separated into contributions from finite size and surface effects. Both components of the excess internal energy are negative at low densities, and become less negative for high density liquids. The magnitude and sign of the two contributions to the energy depend on physical conditions such as temperature and pressure. The excess entropy of solvation is negative for all systems studied, indicating that introduction of a macroparticle or a flat surface increases the spatial ordering of a bulk liquid.
Mott phases and quantum phase transitions of extended Bose-Hubbard models in 2+1 dimensions
Creators: name: Sengupta, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We review the recent theoretical developments towards understanding the Mott phases and quantum phase transition of extended Bose-Hubbard models on lattices in two spatial dimensions . We focuss on the description of these systems using the dual vortex picture and point out the crucial role played by the geometry of underlying lattices in determining the nature of both the Mott phases and the quantum phase transitions. We also briefly compare the results of dual vortex theory with quantum Monte Carlo results.
description: Mini review; conference proceeeding for STATPHYS - KOLKATA V; to be published in Physica A. v2: additional refs. added
Nonlinear Nanophotonic Circuitry: Tristable and Astable Multivibrators and Chaos Generator
Creators: name: Ma, Pujuan
name: Gao, Lei
name: Ginzburg, Pavel
name: Noskov, Roman E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Chaotic Dynamics (nlin.CD)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The concept of lumped optical nanoelements (or metactronics), wherein nanometer-scale structures act as nanoinductors, nanocapacitors and nanoresistors, has attracted a great deal of attention as a simple toolbox for engineering different nanophotonic devices in analogy with microelectronics. While recent studies of the topic have been predominantly focused on linear functionalities, nonlinear dynamics in microelectronic devices plays a crucial role and provides a majority of functions, employed in modern applications. Here, we extend the metactronics paradigm and add nonlinear dynamical modalities to those nanophotonic devices that have never been associated with optical nanoantennas. Specifically, we show that nonlinear dimer nanoantennae can operate in the regimes of tristable and astable multivibrators as well as chaos generators. The physical mechanism behind these modalities relies on the Kerr-type nonlinearity of nanoparticles in the dimer enhanced by a dipolar localized surface plasmon resonance. This allows one to provide a positive nonlinear feedback at moderate optical intensities, leading to the desired dynamical behavior via tuning the driving field parameters. Our findings shed light on a novel class of nonlinear nanophotonic devices with a tunable nonlinear dynamical response.
Beaming Elastic and SERS Emission from Bent-Plasmonic Nanowire on a Mirror Cavity
Creators: name: Tiwari, Sunny
name: Vasista, Adarsh B.
name: Paul, Diptabrata
name: Chaubey, Shailendra K.
name: Kumar, G. V. Pavan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We report on the experimental observation of beaming elastic and surface enhanced Raman scattering (SERS) emission from a bent-nanowire on a mirror (B-NWoM) cavity. The system was probed with polarization resolved Fourier plane and energy-momentum imaging to study the spectral and angular signature of the emission wavevectors. The out-coupled elastically scattered light from the kink occupies a narrow angular spread. We used a self-assembled monolayer of molecules with a well-defined molecular orientation to utilize the out-of-plane electric field in the cavity for enhancing Raman emission from the molecules and in achieving beaming SERS emission. Calculated directionality for elastic scattering and SERS emission were found to be 16.2 and 12.5 dB respectively. The experimental data were corroborated with three-dimensional numerical finite element and finite difference time domain based numerical simulations. The results presented here may find relevance in understanding coupling of emitters with elongated plasmonic cavities and in designing on-chip optical antennas.
IMPROVING INFRARED DRYING OF AGRICULTURAL PRODUCTS
Creators: name: Ungarov, Azizbek
name: Xudayberdiev, Rustamjon
Publisher: name: Zenodo
Year: 2023

description: Today, on a world scale, improving the scientific basis of innovative models of resource-saving techniques, technologies and management systems that preserve the chemical composition, physico-chemical properties, structure, biologically active substances and taste of fruits and vegetables during drying, new methods of calculating the drying process and mathematical development of models, study of heat and mass exchange processes in a wet body and carrying out scientific research on the calculation of structural dimensions of the apparatus is an urgent problem.
Crystal-to-stripe reordering of sodium ions in NaxCoO2 (x>=0.75)
Creators: name: Morris, D. J. P.
name: Roger, M.
name: Gutmann, M. J.
name: Goff, J. P.
name: Tennant, D. A.
name: Prabhakaran, D.
name: Boothroyd, A. T.
name: Dudzik, E.
name: Feyerherm, R.
name: Hoffmann, J. -U.
name: Kiefer, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The sodium reordering in NaxCoO2 in the vicinity of room temperature is rationalized at high x in terms of phase transitions between square and striped phases. A striking hexagon-of-hexagons diffraction pattern observed for x=0.78 can be reproduced using coexisting square and striped phases that are related by simple shear deformations. All compositions exhibit a partial melting transition to a disordered stripe phase just below room temperature, which alters the topology of the electrical conduction pathways.
description: Published in Phys. Rev. B
Additional file 3 of Identification and functional analysis of the SARS-COV-2 nucleocapsid protein
Creators: name: Tianyi Gao
name: Yingdong Gao
name: Xiangxiang Liu
name: Zhenlin Nie
name: Huilin Sun
name: Lin, Kang
name: Hongxin Peng
name: Shukui Wang
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 3: Supplementary Table 1. The secondary structure comparison of SARS-COV-2, SARS and MERS N protein.
[Lexical, phrase, and sentence elicitation; minimal tone pairs]
Creators: name: Cuevas Cortés, Margarita
name: Jiménez García, Otelia
name: Macaulay, Monica
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: Chalcatongo de Hidalgo Mixtec language

description: Work with Margarita Cuevas begins midway through file 003 (Tape 28, Side A). See pages 44-57 of associated field notes.
Pion induced double charge exchange reactions in the Delta resonance region
Creators: name: Buss, O.
name: Alvarez-Ruso, L.
name: Larionov, A. B.
name: Mosel, U.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We have applied the Giessen BUU (GiBUU) transport model to the description of the double charge exchange (DCX) reaction of pions with different nuclear targets at incident kinetic energies of 120-180 MeV . The DCX process is highly sensitive to details of the interactions of pions with the nuclear medium and, therefore, represents a major benchmark for any model of pion scattering off nuclei at low and intermediate energies. The impact of surface effects, such as the neutron skins of heavy nuclei, is investigated. The dependence of the total cross section on the nuclear mass number is also discussed. We achieve a good quantitative agreement with the extensive data set obtained at LAMPF. Furthermore, we compare the solutions of the transport equations obtained in the test-particle ansatz using two different schemes - the full and the parallel ensemble method.
description: 14 pages,9 figures
Molecular nature of $P_{cs} (4459)$ and its heavy quark spin partners
Creators: name: Xiao, C. W.
name: Wu, J. J.
name: Zou, B. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Inspired by the observation of the $P_{cs} (4459)$ state by LHCb recently, we reexamine the results of the interaction of the $J/ψΛ$ channel with its coupled channels, exploiting the coupled channel unitary approach combined with heavy quark spin and local hidden gauge symmetries. By tuning the only free parameter, we find a pole of $(4459.07+i6.89)$ MeV below the $\bar D^* Ξ_c$ threshold, which was consistent well with the mass and width of the $P_{cs} (4459)$ state. Thus, we assume the $P_{cs} (4459)$ state to be a $\bar D^* Ξ_c$ bound state with the uncertainties on its degeneracy with $J^P = \frac{1}{2}^-$ and $J^P = \frac{3}{2}^-$. For the degeneracy, it would have two-poles structure, like $P_c (4450)$ before. There is another pole in the $J^P = \frac{1}{2}^-$ sector, $(4310.53+i8.23)$ MeV, corresponding to a deep bound state of $\bar D Ξ_c$. Furthermore, the previously predicted loose bound states of $\bar D Ξ'_c$, $\bar D^* Ξ'_c$, $\bar D^* Ξ^*_c$ with $J=1/2,~I=0$ and $\bar D^* Ξ'_c$, $\bar D Ξ^*_c$, $\bar D^* Ξ_c^*$ with $J=3/2,~I=0$ may exist as either bound states or unbound virtual states. We hope that future experiments can search for the $\bar D^{(*)} Ξ_c$ molecular states in their dominant decay channels of $\bar D^{(*)}_s Λ_c$, also in the $J/ψΛ$ and $η_c Λ$ channels to reveal their different nature.
description: Some comments and corrections have been made