cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Solar Cycle Variability and Surface Differential Rotation from Ca II K-Line Time Series Data
Creators: name: Scargle, Jeffrey
name: Keil, Stephen
name: Worden, Pete
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Analysis of over 36 years of time series data from the NSO/AFRL/Sac Peak K-line monitoring program elucidates five components of the variation of the seven measured chromospheric parameters: (a) the solar cycle (period ~ 11 years), (b) quasi-periodic variations (periods ~100 days), (c) a broad band stochastic process (wide range of periods), (d) rotational modulation, and (e) random observational errors, independent of (a)-(d). Correlation and power spectrum analyses elucidate periodic and aperiodic variation of these parameters. Time-frequency analysis illuminates periodic and quasi periodic signals, details of frequency modulation due to differential rotation, and in particular elucidates the rather complex harmonic structure (a) and (b) at time scales in the range ~0.1 - 10 years. These results using only full-disk data suggest that similar analyses will be useful at detecting and characterizing differential rotation in stars from stellar light-curves such as thosebeing produced by NASA's Kepler observatory. Component (c) consists of variations over a range of timescales, in the manner of a 1/f random process with a power-law slope index that varies in a systematic way. A time-dependent Wilson-Bappu effect appears to be present in the solar cycle variations (a), but not in the more rapid variations of the stochastic process (c). Component (d) characterizes differential rotation of the active regions. Component (e) is of course not characteristic of solar variability, but the fact that the observational errors are quite small greatly facilitates the analysis of the other components. The data analyzed in this paper can be found at the National Solar Observatory web site http://nsosp.nso.edu/cak_mon/, or by file transfer protocol at ftp://ftp.nso.edu/idl/cak.parameters
description: 41 pages, 21 figures. This version is based on slightly more data (through 28 February 2013) that in that submitted to the Astrophysical Journal
A Curious History of Sunspot Penumbrae
Creators: name: Hathaway, D. H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Daily records of sunspot group areas compiled by the Royal Observatory, Greenwich, from May of 1874 through 1976 indicate a curious history for the penumbral areas of the smaller sunspot groups. On average, the ratio of penumbral area to umbral area in a sunspot group increases from 5 to 6 as the total sunspot group area increases from 100 to 2000 microHem (a microHem is a millionth the area of a solar hemisphere). This relationship does not vary substantially with sunspot group latitude or with the phase of the sunspot cycle. However, for the sunspot groups with total areas <100 microHem, this ratio changes dramatically and systematically through this historical record. The ratio for these smallest sunspots is near 5.5 from 1874 to 1900. After a rapid rise to more than 7 in 1905 it drops smoothly to less than 3 by 1930 and then rises smoothly back to more than 7 in 1961. It then returns to near 5.5 from 1965 to 1976. The smooth variation from 1905 to 1961 shows no indication of any step-like changes that might be attributed to changes in equipment or personnel. The overall level of solar activity was increasing monotonically during this time period when the penumbra-to-umbra area ratio dropped to less than half its peak value and then returned. If this history can be confirmed by other observations (e.g., Mt. Wilson or Kodaikanal) it may impact our understanding of penumbra formation, our dynamo models, and our estimates of historical changes in the solar irradiance.
description: 11 pages, 7 figures Solar Physics 2013
Scaling asymptotics of Szego kernels under commuting Hamiltonian actions
Creators: name: Camosso, Simone
Publisher: name: figshare
Year: 2021
Subjects: Geometry

description: Let M be a connected d-dimensional complex projective manifold, and let A be a holomorphic positive Hermitian line bundle on M, with normalized curvature. Let G be a compact and connected Lie group of dimension d(G), and let T be a compact torus T of dimension d(T). Suppose that both G and T act on M in a holomorphic and Hamiltonian manner, that the actions commute, and linearize to A. If X is the principal circle-bundle associated to A, then this set-up determines commuting unitary representations of G and T on the Hardy space H(X) of X, which may then be decomposed over the irreducible representations of the two groups. If the moment map for the T-action is nowhere zero, all isotypical components for the torus are finite-dimensional, and thus provide a collection of finite-dimensional G-modules. Given a non-zero integral weight n(T) for T, we consider the isotypical components associated to the multiples kn(T), k that goes to infinity, and focus on how their structure as G-modules is reflected by certain local scaling asymptotics on X (and M). More precisely, given a fixed irreducible character n(G) of G, we study the local scaling asymptotics of the equivariant Szegő projectors associated to n(G) and kn(T), for k that goes to infinity, investigating their asymptotic concentration along certain loci defined by the moment maps.
Superior probabilistic computing using operationally stable probabilistic-bit constructed by manganite nanowire
Creators: name: Wang, Yadi
name: Chen, Bin
name: Gao, Wenping
name: Ye, Biying
name: Niu, Chang
name: Wang, Wenbin
name: Zhu, Yinyan
name: Yu, Weichao
name: Guo, Hangwen
name: Shen, Jian
Publisher: name: arXiv
Year: 2025
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Probabilistic computing has emerged as a viable approach to treat optimization problems. To achieve superior computing performance, the key aspect during computation is massive sampling and tuning on the probability states of each probabilistic bit (p-bit), demanding its high stability under extensive operations. Here, we demonstrate a p-bit constructed by manganite nanowire that shows exceptionally high stability. The p-bit contains an electronic domain that fluctuates between metallic (low resistance) and insulating (high resistance) states near its transition temperature. The probability for the two states can be directly controlled by nano-ampere electrical current. Under extensive operations, the standard error of its probability values is less than 1.3%. Simulations show that our operationally stable p-bit plays the key role to achieve correct inference in Bayesian network by strongly suppressing the relative error, displaying the potential for superior computing performance. Our p-bit also serves as high quality random number generator without extra data-processing, beneficial for cryptographic applications.
description: 22 pages, 3 figures, 1 table
Editorial note to "A Homogeneous Universe of Constant Mass and Increasing Radius accounting for the Radial Velocity of Extra--Galactic Nebulae" by Georges Lemaître (1927)
Creators: name: Luminet, Jean-Pierre
Publisher: name: arXiv
Year: 2013
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: This is an editorial note to accompany printing as a Golden Oldie in the Journal of General Relativity and Gravitation of the fundamental article by Georges Lemaître first published in French in 1927, in which the author provided the first explanation of the observations on the recession velocities of galaxies as a natural consequence of dynamical cosmological solutions of Einstein's field equations, and discovered the so-called Hubble law. We analyze in detail the scientific contents of this outstanding work, we describe how it remained unread or poorly appreciated until 1930, and we list and explain the differences between the 1927 and 1931 versions. Indeed the English translation published in 1931 in MNRAS was not perfectly faithful to the original text - it was updated. As it turned out very recently, the updates were done by Lemaître himself, but the discrepancies between the two texts caused a temporary stir among historians. Our new translation - given in the Appendix - follows the 1927 version exactly.
description: 25 pages, 3 figures, to be published in Gen. Rel. Grav
Phenomenology of Light Fermionic Asymmetric Dark Matter
Creators: name: Bhattacherjee, Biplob
name: Matsumoto, Shigeki
name: Mukhopadhyay, Satyanarayan
name: Nojiri, Mihoko M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Asymmetric dark matter (ADM) has been an attractive possibility attempting to explain the observed ratio of baryon to dark matter abundance in the universe. While a bosonic ADM is constrained by the limits from existence of old neutron stars, a fermionic ADM requires an additional light particle in order to annihilate its symmetric component in the early universe. We revisit the phenomenology of a minimal GeV scale fermionic ADM model including a light scalar state. The current constraints on this scenario from cosmology, dark matter direct detection, flavour physics and collider searches are investigated in detail. We estimate the future reach on the model parameter space from next-generation dark matter direct detection experiments, Higgs boson property measurements and search for light scalars at the LHC, as well as the determination of Higgs invisible branching ratio at the proposed ILC.
description: 31 pages, 7 figures; v2: comments and references added, version as published in JHEP
Investigation Into Hydraulic Flocculation With Special Emphasis On The Removal Of Algae
Creators: name: Rodman, Derek
Publisher: name: London South Bank University
Year: 1982

description: Dissolved air flotation is being used successfully for the Clarification of raw waters for potable supply. Efficient flocculation is essential for effective treatment by flotation. Most flotation plants employ mechanical flocculation for which slow moving paddles provide the agitation required for floc agglomeration. Mechanical flocculation is expensive to operate and needs maintenance. Hydraulic flocculation was investigated as an alternative to mechanical. The work has shown that a Similar flotation treated water quality can be produced by the two processes. Half the flocculation time is required for hydraulic flocculation compared - with mechanical but a higher energy input is needed to compensate for the shorter time. Results showed the optimum G*t value (mean velocity gradient * residence time) at 50 000 and the response to variation in throughput was the same for both processes. The hydraulic flocculator was operated successfully on three different waters, turbid river, stored low turbid cultured and stored algal. ladened waters. The hydraulic flocculator was scaled-up successfully from a 8.0 m3/h pilot plant to a 90.0 m3/h prototype plant. Coagulation and flocculation of algae was studied by measuring their electromobility and by carrying out parallel tests ina - flotation jar tester. All the algal species investigated possessed an electro-negative potential. Coagulation and flocculation of the algae examined in the jar test experiments appeared to be due to charge neutralization.
Broken Symmetries, Zero-Energy Modes, and Quantum Transport in Disordered Graphene: From Supermetallic to Insulating Regimes
Creators: name: Cresti, Alessandro
name: Ortmann, Frank
name: Louvet, Thibaud
name: Van Tuan, Dinh
name: Roche, Stephan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The role of defect-induced zero-energy modes on charge transport in graphene is investigated using Kubo and Landauer transport calculations. By tuning the density of random distributions of monovacancies either equally populating the two sublattices or exclusively located on a single sublattice, all conduction regimes are covered from direct tunneling through evanescent modes to mesoscopic transport in bulk disordered graphene. Depending on the transport measurement geometry, defect density, and broken sublattice-symmetry, the Dirac point conductivity is either exceptionally robust against disorder (supermetallic state) or suppressed through a gap opening or by algebraic localization of zero-energy modes, whereas weak localization and the Anderson insulating regime are obtained for higher energies. These findings clarify the contribution of zero-energy modes to transport at the Dirac point, hitherto controversial.
description: 7 pages, 5 figures, to appear on Physical Review Letters
The Degeneracy Problem in Non-Canonical Inflation
Creators: name: Easson, Damien A.
name: Powell, Brian A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: While attempting to connect inflationary theories to observational physics, a potential difficulty is the degeneracy problem: a single set of observables maps to a range of different inflaton potentials. Two important classes of models affected by the degeneracy problem are canonical and non-canonical models, the latter marked by the presence of a non-standard kinetic term that generates observables beyond the scalar and tensor two-point functions on CMB scales. The degeneracy problem is manifest when these distinguishing observables go undetected. We quantify the size of the resulting degeneracy in this case by studying the most well-motivated non-canonical theory having Dirac-Born-Infeld Lagrangian. Beyond the scalar and tensor two-point functions on CMB scales, we then consider the possible detection of equilateral non-Gaussianity at Planck-precision and a measurement of primordial gravitational waves from prospective space-based laser interferometers. The former detection breaks the degeneracy with canonical inflation but results in poor reconstruction prospects, while the latter measurement enables a determination of $n_T$ which, while not breaking the degeneracy, can be shown to greatly improve the non-canonical reconstruction.
description: 22 pages, 5 figures, matches version to appear in JCAP
Helioseismology of sunspots: how sensitive are travel times to the Wilson depression and to the subsurface magnetic field?
Creators: name: Schunker, Hannah
name: Gizon, Laurent
name: Cameron, Robert H.
name: Birch, Aaron C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In order to assess the ability of helioseismology to probe the subsurface structure and magnetic field of sunspots, we need to determine how helioseismic travel times depend on perturbations to sunspot models. Here we numerically simulate the propagation of f, p1, and p2 wave packets through magnetic sunspot models. Among the models we considered, a ~50 km change in the height of the Wilson depression and a change in the subsurface magnetic field geometry can both be detected above the observational noise level. We also find that the travel-time shifts due to changes in a sunspot model must be modeled by computing the effects of changing the reference sunspot model, and not by computing the effects of changing the subsurface structure in the quiet-Sun model. For p1 modes the latter is wrong by a factor of four. In conclusion, numerical modeling of MHD wave propagation is an essential tool for the interpretation of the effects of sunspots on seismic waveforms.
description: 5 pages, 3 figures: submitted to A&A
Oct4 is a gatekeeper of epithelial identity by regulating cytoskeletal organization in skin keratinocytes
Creators: name: Christofidou, Elena
name: Tomazou, Marios
name: Voutouri, Chrysovalantis
name: Michael, Christina
name: Stylianopoulos, Triantafyllos
name: Spyrou, George
name: Strati, Katerina
Publisher: name: Zenodo
Year: 2024

description: Original scripts used for analyzing microscopy, RNA-seq and ATAC-seq data.
A complete topological invariant for braided magnetic fields
Creators: name: Yeates, A. R.
name: Hornig, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A topological flux function is introduced to quantify the topology of magnetic braids: non-zero line-tied magnetic fields whose field lines all connect between two boundaries. This scalar function is an ideal invariant defined on a cross-section of the magnetic field, whose integral over the cross-section yields the relative magnetic helicity. Recognising that the topological flux function is an action in the Hamiltonian formulation of the field line equations, a simple formula for its differential is obtained. We use this to prove that the topological flux function uniquely characterises the field line mapping and hence the magnetic topology. A simple example is presented.
description: 10 pages, 5 figures, submitted to conference proceedings on "Knotted, Linked and Tangled Flux in Quantum and Classical Systems" (Isaac Newton Institute for Mathematical Sciences)
The quantum vacuum as the origin of the speed of light
Creators: name: Urban, Marcel
name: Couchot, Francois
name: Sarazin, Xavier
name: Djannati-Atai, Arache
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We show that the vacuum permeability and permittivity may originate from the magnetization and the polarization of continuously appearing and disappearing fermion pairs. We then show that if we simply model the propagation of the photon in vacuum as a series of transient captures within these ephemeral pairs, we can derive a finite photon velocity. Requiring that this velocity is equal to the speed of light constrains our model of vacuum. Within this approach, the propagation of a photon is a statistical process at scales much larger than the Planck scale. Therefore we expect its time of flight to fluctuate. We propose an experimental test of this prediction.
description: 6 pages, Accepted for publication in European Physical Journal D. arXiv admin note: substantial text overlap with arXiv:1111.1847, arXiv:1106.3996
Clipping the Cosmos II: Cosmological information from non-linear scales
Creators: name: Simpson, Fergus
name: Heavens, Alan F.
name: Heymans, Catherine
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a method for suppressing contributions from higher-order terms in perturbation theory, greatly increasing the amount of information which may be extracted from the matter power spectrum. In an evolved cosmological density field the highest density regions are responsible for the bulk of the nonlinear power. By suitably down-weighting these problematic regions we find that the one- and two-loop terms are typically reduced in amplitude by ~70 per cent and ~95 per cent respectively, relative to the linear power spectrum. This greatly facilitates modelling the shape of the galaxy power spectrum, potentially increasing the number of useful Fourier modes by more than two orders of magnitude. We provide a demonstration of how this technique allows the galaxy bias and the amplitude of linear matter perturbations sigma_8 to be determined from the power spectrum on conventionally nonlinear scales, 0.1
description: 13 pages, 11 figures. To appear in Physical Review D
The relationship between hard X-ray pulse timings and the locations of footpoint sources during solar flares
Creators: name: Inglis, A. R.
name: Dennis, B. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The cause of quasi-periodic pulsations (QPP) in solar flares remains the subject of debate. Recently, Nakariakov & Zimovets (2011) proposed a new model suggesting that, in two-ribbon flares, such pulsations could be explained by propagating slow waves. These waves may travel obliquely to the magnetic field, reflect in the chromosphere and constructively interfere at a spatially separate site in the corona, leading to quasi-periodic reconnection events progressing along the flaring arcade. Such a slow wave regime would have certain observational characteristics. We search for evidence of this phenomenon during a selection of two-ribbon flares observed by RHESSI, SOHO and TRACE; the flares of 2002 November 9, 2005 January 19 and 2005 August 22. We were not able to observe a clear correlation between hard X-ray footpoint separations and pulse timings during these events. Also, the motion of hard X-ray footpoints is shown to be continuous within the observational error, whereas a discontinuous motion might be anticipated in the slow wave model. Finally, we find that for a preferential slow wave propagation angle of 25-28 degrees that is expected for the fastest waves, the velocities of the hard X-ray footpoints lead to estimated pulse periods and ribbon lengths significantly larger than the measured values. Hence, for the three events studied, we conclude that the observational characteristics cannot be easily explained via the Nakariakov & Zimovets (2011) propagating slow wave model when only angles of 25-28 degrees are considered. We provide suggested flare parameters to optimise future studies of this kind.
description: 8 pages, 7 figures, 1 table
The QCD phase diagram from Schwinger-Dyson Equations
Creators: name: Gutierrez, Enif
name: Ahmad, Aftab
name: Ayala, Alejandro
name: Bashir, Adnan
name: Raya, Alfredo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the phase diagram of quantum chromodynamics (QCD). For this purpose we employ the Schwinger-Dyson equations (SDEs) technique and construct a truncation of the infinite tower of equations by demanding a matching with the lattice results for the quark-anti-quark condensate at finite temperature (T), for zero quark chemical potential (mu), that is, the region where lattice calculations are expected to provide reliable results. We compute the evolution of the phase diagram away from T=0 for increasing values of the chemical potential by following the evolution of the heat capacity as a function of T and mu. The behavior of this thermodynamic variable clearly demonstrates the existence of a cross-over for mu less than a critical value. However, the heat capacity develops a singularity near mu approx 0.22 GeV marking the onslaught of a first order phase transition characterized by the existence of a critical point. The critical line continues until mu approx 0.53 GeV where Tc=0 and thus chiral symmetry is finally restored.
title: Weighted Length Frequency Distributions for Pacific Halibut in U.S. West Coast Limited Entry and Catch Share Bottom Trawl and Pot Fisheries, 2004–18
titleType: Other
Creators: name: Jannot, Jason Earl
name: Richerson, Kate E.
name: Somers, Kayleigh A.
name: McVeigh, Jon
Publisher: name: United States. National Marine Fisheries Service, Northwest Fisheries Science Center (U.S.)
Year: 2019

description: NOAA data report NMFS NWFSC-DR ; 2019-03
A model for the ESR-STM phenomenon
Creators: name: Caso, Alvaro
name: Horovitz, Baruch
name: Arrachea, Liliana
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose a model to account for the observed ESR-like signal at the Larmor frequency in the current noise STM experiments identifying spin centers on various substrates. The theoretical understanding of this phenomenon, which allows for single spin detection on surfaces at room temperature, is not settled for the experimentally relevant case that the tip and substrate are not spin polarized. Our model is based on a direct tip-substrate tunneling in parallel with a current flowing via the spin states. We find a sharp signal at the Larmor frequency even at high temperatures, in good agreement with experimental data. We also evaluate the noise in presence of an ac field near resonance and predict splitting of the signal by the Rabi frequency.
description: 5 pages, 3 figures
A simple form for the low-x generalized parton distributions in the skewed regime
Creators: name: Harland-Lang, L. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the generalized parton distributions (GPDFs) in the 'skewed' $x \approx ξ<< 1$ regime can be related in a particularly simple way to the usual diagonal distributions. This follows directly from the Shuvaev transform, but bypasses a direct evaluation of the poorly convergent double integral which this relation contains, thus allowing for a more transparent understanding of the physics involved; it avoids the necessity for any further low-x approximations for the diagonal partons, as well as permitting a clearer application to cases when the GPDFs unintegrated over the parton transverse momentum are required. We consider for illustration the specific examples of the central exclusive production of a Standard Model Higgs boson, and the photoproduction of a Upsilon meson at the LHC, and show how a careful evaluation of the GPDFs, which our simple results allow, is required to correctly calculate the predicted cross sections.
description: 19 Pages, 8 Figures, version accepted for publication in PRD
title: Observed and Estimated Total Bycatch of Salmon in U.S. West Coast Fisheries, 2002–18
titleType: Other
Creators: name: Richerson, Kate
name: Somers, Kayleigh A.
name: Jannot, Jason Earl
name: Tuttle, Vanessa J.
name: Riley, Neil B.
name: McVeigh, Jon
Publisher: name: United States. National Marine Fisheries Service, Northwest Fisheries Science Center (U.S.)
Year: 2019

description: NOAA data report NMFS NWFSC DR ; 2019-02
Association between depressive symptoms and subsequent injuries in early adolescents: a population-based study
Creators: name: Chau, Kénora
name: Vilain, Etienne
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Depressive symptoms (DSs) may be frequent and highly increase the risk of injuries in early adolescents (10–16 years). This study assessed the association between DSs and subsequent school and out-of-school injuries in early adolescents. The study population included 1219 middle-school adolescents from north-eastern France (mean age =12.7 ± 1.3) who completed at the end of school-year a questionnaire gathering socioeconomic features (nationality, family structure, parents’ occupation, parents’ education, and family income), obesity, alcohol use, tobacco use, health status, DSs (Kandel scale higher than the median value, hence including moderate levels), and school and out-of-school injuries during the present school-year. Were only considered the DSs and confounders that had started before the school-year. Data was analyzed using multinomial logistic regression models. DSs were strongly associated with one or more school-physical/sports-training injuries (sex-age-adjusted odds ratio ORsa 2.08, p p p p p p p DSs strongly increase the injury risk in early adolescents. Injury prevention should include DSs screening and monitoring and help adolescents and their neighborhood be aware of the risk.HighlightsInjuries and depressive symptoms (DSs) are frequent in early adolescents.DSs highly predict subsequent school and out-of-school injuries and cumulating several injury types.These results are robust after adjustment for socioeconomic features, being obese, alcohol use, tobacco use and poor health status.Injury prevention should include early DSs screening and monitoring and help adolescents and their neighborhood be aware of the risk. Injuries and depressive symptoms (DSs) are frequent in early adolescents. DSs highly predict subsequent school and out-of-school injuries and cumulating several injury types. These results are robust after adjustment for socioeconomic features, being obese, alcohol use, tobacco use and poor health status. Injury prevention should include early DSs screening and monitoring and help adolescents and their neighborhood be aware of the risk.
Effect of both Z and Z^prime - mediated flavor-changing neutral currents on $B_s$ decays into $tau^+tau^-$
Creators: name: Sahoo, S.
name: Banerjee, D.
name: Kumar, M.
name: Mohanty, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In recent years, $B_s$ decays into $tau^+tau^-$ has attracted a lot of attention since it is very sensitive to the structure of standard model (SM) and potential source of new physics beyond SM. In this paper, we study the effect of both Z and -mediated flavor-changing neutral currents on the $B_s$ decays into $tau^+tau^-$. We find the branching ratio of $B_s$ decays into $tau^+tau^-$ is enhanced relative to SM prediction, which would help to explain the recent observed CP-violation from like-sign dimuon charge asymmetry in the B system.
description: 12 pages, 1 figure
Self-Tuning Control With Pole-Zero Placement.
Creators: name: Sattar, Tariq
Publisher: name: London South Bank University
Year: 1986

description: Parameter estimation of linear Discrete-time systems by linear programming using two error criteria, namely minimisation of the sum of the absolute values of the errors and minimisation of the maximum absolute error is developed and results are compared with those obtained by the least squares method. The mathematical models are then extended to provide combined structure and parameter identification by mixed integer programming. A method to place both the closed-loop poles and zeros for non-minimum phase systems is developed. The controller can be made self-tuning and its adaptive response remains invariant to changes in process zeros. A method is proposed to vary the system response from exact model-reference following through to a steady state correspondence so that the response with minimum deviation from the reference model can be tuned. A simple variable pole-placement controller is developed and its robustness in the prescence of process-model mismatch and input/output non-linearity is assessed. Two solutions to the implicit selftuning pole-placement regulator problem are proposed and the results extended to develop two variable pole-placement regulators which give stability and the ‘least’ variance of the output in the prescence of process~-model mismatch. The implicit self-tuning generalized minimum variance control of Clarke-Gawthrop is reformulated to give implicit estimation of the control weighting in order to control non-minimum phase systems. It also gives a self adjusting controller which tunes to give least variance of the output when a process-model mismatch exists.
Yukawa coupling beta-functions in the Standard Model at three loops
Creators: name: Bednyakov, A. V.
name: Pikelner, A. F.
name: Velizhanin, V. N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the results for three-loop beta-functions for Yukawa couplings of heavy Standard Model fermions calculated within the unbroken phase of the model. The calculation is carried out with the help of the MINCER program in a general linear gauge, and the final result is independent of the gauge-fixing parameters. In order to calculate three-point functions, we made use of infrared rearrangement (IRR) trick. Due to the chiral structure of the SM a careful treatment of loops with fermions is required to perform the calculation. It turns out that gauge anomaly cancellation in the SM allows us to obtain the result by means of the semi-naive treatment of gamma5.
description: 7 pages, 1 figure, discussion about gamma5 extended, numerical estimates changed according to new ancillary files with correct results
Single-particle spectral functions in the normal phase of a strongly-attractive Bose-Fermi mixture
Creators: name: Fratini, Elisa
name: Pieri, Pierbiagio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We calculate the single-particle spectral functions and quasi-particle dispersions for a Bose-Fermi mixture when the boson-fermion attraction is sufficiently strong to suppress completely the condensation of bosons at zero temperature. Within a T-matrix diagrammatic approach, we vary the boson-fermion attraction from the critical value where the boson condensate first disappears to the strongly attractive (molecular) regime and study the effect of both mass- and density-imbalance on the spectral weights and dispersions. An interesting spectrum of particle-hole excitations mixing two different Fermi surfaces is found. These unconventional excitations could be produced and explored experimentally with radio-frequency spectroscopy.
description: 13 pages, 7 figures
Neutrino spectral density at electroweak scale temperature
Creators: name: Miura, Kohtaroh
name: Hidaka, Yoshimasa
name: Satow, Daisuke
name: Kunihiro, Teiji
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the scenario of resonant leptogenesis in which lepton number creation in the electroweak-scale is relevant, we investigate the spectral properties and possible collective nature of the standard model neutrinos at electroweak scale temperature (T). We adopt the R_xi gauge fixing, which includes the unitary gauge as a limiting case, and allows us to study the broken as well as the restored phases of the gauge symmetry in a unified way. We show that the spectral density of the neutrino has a three-peak structure in the low-momentum region due to the scattering with the thermally excited particles (i.e., Landau damping) when T becomes comparable to the weak-boson masses in the plasma. The three peaks are identified with a novel ultrasoft mode, the usual quasiparticle, and antiplasmino modes. Varying the gauge-fixing parameter, we show that the three-peak structure appears independently of the gauge fixing and thus has a physical significance. We discuss possible implications of the neutrino spectral density obtained in the present work on particle cosmology, in particular in the context of resonant leptogenesis.
description: 17 pages, 12 figures
title: On the Relations between Law and History
Creators: name: den Hollander, Maurits
Publisher: name: forum historiae iuris
Year: 2019

description: What is Legal History? How should this field, on the border of two academic disciplines, be approached methodologically? In this article I will argue that legal historians have too often strived to treat the past from a ‘present day’ perspective. Studying law in history as part of a broader contextual analysis will help to understand the functioning of past legal systems and their actors as part of their contemporary societies. Through the introduction of Johan Huizinga’s aesthetical or cultural approach to history, I will show how legal historians can and should make use of general historical methodological frameworks in their research.
title: Possessio, animus e corpus
Creators: name: Ferretti, Paolo
Publisher: name: forum historiae iuris
Year: 2019

description: The author examines the role of the terms animus and corpus in the development of notion of possession. The path outlined by the main texts of roman jurists up to Paulus shows substantial continuity: the acquisition of possession animo is impossible, while the retention of possession animo is allowed for lands, where animus means the intention of dominus to return to the land. Since Paulus a change has occurred: the notion of animus and corpus ― which before were alternatives ― became intrinsic elements of possession.
title: PREDICTING THE RISK OF ADVERSE DRUG REACTIONS IN COMBINED PHARMACOTHERAPY: PEDIATRIC ASPECT
Creators: name: Kirilochev, Oleg O.
name: Umerova, Adelya R.
name: Denisova, Elena A.
name: Dorfman, Inna P.
name: Kirilochev, Oleg K.
Publisher: name: Astrakhan State Medical University
Year: 2019

description: The analysis of the combined drug therapy of children undergoing inpatient treatment in a psychiatric hospital has been carried out based on the identification of off-label drug use and risk assessment of potential drug-drug interactions. Case histories of inpatients and lists of prescriptions have been retrospectively studied. Clinically unconfirmed and contraindicated off-label drug use has not been identified. We have found 14 drug combinations that can lead to moderate drug-drug interactions and require monitoring of the patient's clinical condition, as well as one combination that can lead to minor drug-drug interaction. Contraindicated and dangerous combinations of drugs have not been found. The safety of the combined pharmacotherapy from the perspective of clinical pharmacology has been assessed. Key words: safety of pharmacotherapy, off-label drug use, drug-drug interactions, adverse drug reactions.
Super rogue waves in simulations based on weakly nonlinear and fully nonlinear hydrodynamic equations
Creators: name: Slunyaev, A.
name: Pelinovsky, E.
name: Sergeeva, A.
name: Chabchoub, A.
name: Hoffmann, N.
name: Onorato, M.
name: Akhmediev, N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The rogue wave solutions (rational multi-breathers) of the nonlinear Schrodinger equation (NLS) are tested in numerical simulations of weakly nonlinear and fully nonlinear hydrodynamic equations. Only the lowest order solutions from 1 to 5 are considered. A higher accuracy of wave propagation in space is reached using the modified NLS equation (MNLS) also known as the Dysthe equation. This numerical modelling allowed us to directly compare simulations with recent results of laboratory measurements in \cite{Chabchoub2012c}. In order to achieve even higher physical accuracy, we employed fully nonlinear simulations of potential Euler equations. These simulations provided us with basic characteristics of long time evolution of rational solutions of the NLS equation in the case of near breaking conditions. The analytic NLS solutions are found to describe the actual wave dynamics of steep waves reasonably well.
description: under revision in Physical Review E
Magnetic monopoles and synthetic spin-orbit coupling in Rydberg macrodimers
Creators: name: Kiffner, Martin
name: Li, Wenhui
name: Jaksch, Dieter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We show that sizeable Abelian and non-Abelian gauge fields arise in the relative motion of two dipole-dipole interacting Rydberg atoms. Our system exhibits two magnetic monopoles for adiabatic motion in one internal two-atom state. These monopoles occur at a characteristic distance between the atoms that is of the order of one micron. The deflection of the relative motion due to the Lorentz force gives rise to a clear signature of the effective magnetic field. In addition, we consider non-adiabatic transitions between two near-degenerate internal states and show that the associated gauge fields are non-Abelian. We present quantum mechanical calculations of this synthetic spin-orbit coupling and show that it realizes a velocity-dependent beamsplitter.
description: 5 pages, 4 figures, minor changes
Bifurcation of periodic solutions from a ring configuration in the vortex and filament problems
Creators: name: García-Azpeitia, C.
name: Ize, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: This paper gives an analysis of the movement of n+1 almost parallel filaments or vortices. Starting from a polygonal equilibrium of n vortices with equal circulation and one vortex at the center of the polygon, we find bifurcation of periodic solutions. The bifurcation result makes use of the orthogonal degree in order to prove global bifurcation of periodic solutions depending on the circulation of the central vortex. In the case of the filament problem these solutions are periodic traveling waves.
Higgs boson decays to quarkonia and the Hccbar coupling
Creators: name: Bodwin, Geoffrey T.
name: Petriello, Frank
name: Stoynev, Stoyan
name: Velasco, Mayda
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we discuss decays of the Higgs boson to quarkonia in association with a photon. We identify a new mechanism for producing such final states in Higgs decays that leads to predictions for the decay rates that differ by an order of magnitude from previous estimates. Although the branching ratios for these processes are still small, the processes are experimentally clean, and the H \to J/ψ+gamma decay should be observable at a 14 TeV LHC. We point out that quantum interference between two different production mechanisms makes the decay rates sensitive to the HQQbar couplings. Consequently, measurements of the H \to J/ψ+gamma decay rate would allow one to probe the Higgs-charm coupling directly at the LHC. We discuss the experimental prospects for the observation of these decays and for the direct measurement of the Hccbar coupling.
description: 13 pages, 4 figures; typos fixed, matches published version
Efficiency improvement of the frequency-domain BEM for rapid transient elastodynamic analysis
Creators: name: Xiao, Jinyou
name: Ye, Wenjing
name: Wen, Lihua
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The frequency-domain fast boundary element method (BEM) combined with the exponential window technique leads to an efficient yet simple method for elastodynamic analysis. In this paper, the efficiency of this method is further enhanced by three strategies. Firstly, we propose to use exponential window with large damping parameter to improve the conditioning of the BEM matrices. Secondly, the frequency domain windowing technique is introduced to alleviate the severe Gibbs oscillations in time-domain responses caused by large damping parameters. Thirdly, a solution extrapolation scheme is applied to obtain better initial guesses for solving the sequential linear systems in the frequency domain. Numerical results of three typical examples with the problem size up to 0.7 million unknowns clearly show that the first and third strategies can significantly reduce the computational time. The second strategy can effectively eliminate the Gibbs oscillations and result in accurate time-domain responses.
Evidence for Time-Reversal-Symmetry-Broken Superconductivity in Locally Noncentrosymmetric SrPtAs
Creators: name: Biswas, P. K.
name: Luetkens, H.
name: Neupert, T.
name: Stuerzer, T.
name: Baines, C.
name: Pascua, G.
name: Schnyder, A. P.
name: Fischer, M. H.
name: Goryo, J.
name: Lees, M. R.
name: Maeter, H.
name: Brueckner, F.
name: Klauss, H. -H.
name: Nicklas, M.
name: Baker, P. J.
name: Hillier, A. D.
name: Sigrist, M.
name: Amato, A.
name: Johrendt, D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the magnetic and superconducting properties of locally noncentrosymmetric SrPtAs obtained by muon-spin-rotation/relaxation (muSR) measurements. Zero-field muSR reveals the occurrence of small spontaneous static magnetic fields with the onset of superconductivity. This finding suggests that the superconducting state of SrPtAs breaks time-reversal symmetry. The superfluid density as determined by transverse field muSR is nearly flat approaching T = 0 K proving the absence of extended nodes in the gap function. By symmetry, several superconducting states supporting time-reversal symmetry breaking in SrPtAs are allowed. Out of these, a dominantly d + id (chiral d-wave) order parameter is most consistent with our experimental data.
description: Additional experimental results supporting TRS breaking have been added
COLLAGEN MATRIX MODIFICATIONS IMPACT ON MATRIX MICROSTRUCTURE AND MASS TRANSPORT OF MACROMOLECULES
Creators: name: Plummer, Alexandra Lynn
Publisher: name: Purdue University Graduate School
Year: 2022
Subjects: Other biomedical and clinical sciences not elsewhere classified

description: Subcutaneous injection is a biotherapeutic drug delivery method that is currently growing due to low cost, better patient compliance, minimally invasive, and the convenience that it can be done at home. Common injection sites for subcutaneous injection include the upper outer arms, abdomen, buttocks, and upper outer thigh. Heterogeneity of the tissue exists between and within each of these locations. The subcutaneous tissue space is made up of adipose tissue, proteins, collagen, and blood vessels and each of these components has an impact on the mass transport of the injected biotherapeutics and how they are absorbed into the vascular system and then distributed to the body. The current methods used to model the subcutaneous tissue space are either very expensive and not feasible for multiple repetitions, cannot incorporate fibrillar proteins or cellular components, or model a more homogeneous tissue space. These limitations do not allow for these models to accurately represent the subcutaneous tissue space. The engineering objective for this project was to develop a platform with tunable matrix architecture and biochemical composition for evaluating mass transport. This project utilizes collagen and the primary matrix due to the large abundance of collagen in the body. We explored the effects that a change in polymerization temperature of the collagen and collagen concentration had on the fiber architecture and pore diameter. The results showed that higher polymerization temperatures of the collagen gels resulted in smaller fiber and pore diameters and an increase in concentration resulted in an increase in fiber volume fraction and a decrease in pore diameter. Fibronectin (FN) and hyaluronic acid (HA) were added to the collagen gels to analyze the impact on the structure of collagen gels with a change in polymerization temperature and collagen concentration. The addition of FN did not strongly alter the collagen fiber architecture between polymerization temperatures and collagen concentrations. Through staining and imaging, we saw an aggregation of FN around the collagen fibrils due to their opposing charges causing them to bind. The addition of HA had moderate impact on collagen fiber architecture across all polymerization temperatures and between collagen concentrations. The collagen + FN gels were used for the mass transport study. The results showed that there was little to no difference between the recovery rates of macromolecules of different charges and size between the collagen and collagen + FN gels, indicating that the transport of molecules through both of the collagen gels was impacted by a steric effect rather than an effect in charge.