cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Element abundances in X-ray emitting plasmas in stars
Creators: name: Testa, Paola
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Studies of element abundances in stars are of fundamental interest for their impact in a wide astrophysical context, from our understanding of galactic chemistry and its evolution, to their effect on models of stellar interiors, to the influence of the composition of material in young stellar environments on the planet formation process. We review recent results of studies of abundance properties of X-ray emitting plasmas in stars, ranging from the corona of the Sun and other solar-like stars, to pre-main sequence low-mass stars, and to early-type stars. We discuss the status of our understanding of abundance patterns in stellar X-ray plasmas, and recent advances made possible by accurate diagnostics now accessible thanks to the high resolution X-ray spectroscopy with Chandra and XMM-Newton.
description: 20 pages, 8 figures. Accepted for publication in Space Science Reviews
Lattice QCD gluon propagators near transition temperature
Creators: name: Bornyakov, V. G.
name: Mitrjushkin, V. K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Landau gauge gluon propagators are studied numerically in the SU(3) gluodynamics as well as in the full QCD with the number of flavors $n_F=2$ using efficient gauge fixing technique. We compare these propagators at temperatures very close to the transition point in two phases : confinement and deconfinement. The electric mass $m_E$ has been determined from the momentum space longitudinal gluon propagator. Gribov copy effects are found to be rather strong in the gluodynamics, while in the full QCD case they are weak ("Gribov noise"). Also we analyse finite volume dependence of the transverse and longitudinal propagators.
description: 9 pages, 7 figures
Additional file 8 of Jasmonate signaling drives defense responses against Alternaria alternata in chrysanthemum
Creators: name: Zhang, Shuhuan
name: Miao, Weihao
name: Liu, Ye
name: Jiang, Jiafu
name: Chen, Sumei
name: Chen, Fadi
name: Guan, Zhiyong
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Plant Biology

description: Additional file 8: Fig. S8. Changes in exclusively upregulated TF expression in JA-I vs. JA groups. Heat map of normalized Log2 (FPKM+ 1) of exclusively WRKY and AP2-EREBP TFs that are up-regulated in JA-I vs. JA groups. Rows are centered based on the average FPKM. From left to right is MOCK, MOCK-I, JA, JA-I. MOCK, control; MOCK-I, control infected group; JA-I, MeJA pre-treated and infected group; JA, MeJA-pre-treated group.
Imaging Spectroscopy of a White-Light Solar Flare
Creators: name: Oliveros, J. C. Martinez
name: Couvidat, S.
name: Schou, J.
name: Krucker, S.
name: Lindsey, C.
name: Hudson, H. S.
name: Scherrer, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report observations of a white-light solar flare (SOL2010-06-12T00:57, M2.0) observed by the Helioseismic Magnetic Imager (HMI) on the Solar Dynamics Observatory (SDO) and the Reuven Ramaty High-Energy Solar Spectroscopic Imager (RHESSI). The HMI data give us the first space-based high-resolution imaging spectroscopy of a white-light flare, including continuum, Doppler, and magnetic signatures for the photospheric FeI line at 6173.34Å and its neighboring continuum. In the impulsive phase of the flare, a bright white-light kernel appears in each of the two magnetic footpoints. When the flare occurred, the spectral coverage of the HMI filtergrams (six equidistant samples spanning \pm172mÅ around nominal line center) encompassed the line core and the blue continuum sufficiently far from the core to eliminate significant Doppler crosstalk in the latter, which is otherwise a possibility for the extreme conditions in a white-light flare. RHESSI obtained complete hard X-ray and Υ-ray spectra (this was the first Υ-ray flare of Cycle 24). The FeI line appears to be shifted to the blue during the flare but does not go into emission; the contrast is nearly constant across the line profile. We did not detect a seismic wave from this event. The HMI data suggest stepwise changes of the line-of-sight magnetic field in the white-light footpoints.
description: 14 pages, 7 figures, Accepted by Solar Physics
Reconnecting nursing and patient dignity : an integrative review
Creators: name: Roy, Jennifer Ann
Publisher: name: University of British Columbia
Year: 2014

description: Preserving dignity is an essential part of nursing. However, there are mounting concerns that nurses are not fulfilling this important responsibility. A gap exists between nursing discourse and practice. The aim of this paper was to examine strategies that have been proposed, or implemented, to translate a conceptual understanding of patient dignity into a central role in daily acute care nursing practice. A greater understanding of strategies offers insight to how nurses can reconnect with upholding patient dignity and provides a starting point for further research. An integrative review was carried out using Whittemore and Knafl’s (2005) updated methodology, which includes 5 stages: problem identification, literature search, data evaluation, data analysis, and presentation. The literature search included the Cumulative Index to Nursing and Allied Health Literature (CINAHL), PubMed, PsycINFO, and Academic Search Complete databases. The keywords for the search were: dignity, nursing, nursing interventions, patients, nurse-patient relations, and staff development. Twelve highly relevant publications were identified. These articles consisted of program development initiatives, expert opinion pieces, practice-based journal articles, and a high-profile campaign. Five strategies emerged from the analysis: Training; Reflection and discussion; Imagining the patient perspective; Leadership; and Planning for action. The strategies focused on the individual nurse and nursing relationships. Structural influences had only a limited focus. Although the nurse participants described a greater understanding, a deeper awareness, better skills, and a desire to create change, the impact of the strategies was not evaluated in practice. Further research needs to assess the impact of the strategies in daily nursing practice, their influence on nursing culture, and the patient experience. A long-term view toward the sustainability of any changes once nurses return to their workplaces must also be taken. In addition, strategies must focus on the system and how nurses can be supported to uphold dignity within the challenges of acute care.
Rimsky-Korsakov's Antar Symphony : a biographical and analytical study
Creators: name: Krusek, Nicolas
Publisher: name: University of British Columbia
Year: 2014

description: Rimsky-Korsakov composed his Symphony No. 2, Antar, in 1868, during his apprenticeship to Balakirev and involvement with The Five. Based on an oriental tale by Osip Senkovsky, it was the first multi-movement, programmatic orchestral work in Russian music. Rimsky-Korsakov revised Antar twice, in 1875 – by which time he was a professor at the Saint Petersburg Conservatory – and 1897. This thesis will examine the original 1868 version of Antar by placing it in the context of his career and the influences that shaped his style. The first chapter presents a biographical sketch of Rimsky-Korsakov, with emphasis on his education and training, including his studies with Balakirev in the 1860s and his rigorous course of self-education in harmony, counterpoint, form, and orchestration in the 1870s. The second chapter begins with a summary of the tale by Senkovsky upon which the music is based, followed by an analysis of the themes, harmony, and orchestration of each movement of Antar. I will show how the form and character of the work are indebted to ideas espoused by Balakirev and The Five, including their fondness for program music, orientalism, unconventional scales and modes, and harmonic progressions based on common tones. I will also draw attention to aspects of the tonal organization and scoring that are elaborated in the composer’s textbook, the Practical Manual of Harmony. My objective is to show that Antar is both a summary of the fruits of Rimsky-Korsakov’s apprenticeship within Balakirev’s circle, as well as a foretaste of his mature compositional and theoretical interests.
Ab-initio molecular dynamics simulation of hydrogen diffusion in $α$-iron
Creators: name: Sanchez, J.
name: Fullea, F.
name: Andrade, M. C.
name: de Andres, P. L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: First-principles atomistic molecular dynamics simulation in the micro-canonical and canonical ensembles has been used to study the diffusion of interstitial hydrogen in $α$-iron. Hydrogen to Iron ratios between $θ=1/16 and 1/2 have been considered by locating interstitial hydrogen atoms at random positions in a $2 \times 2 \times 2$ supercell. We find that the average optimum absorption site and the barrier for diffusion depend on the concentration of interestitials. Iron Debye temperature decreases monotonically for increasing concentration of interstitial hydrogen, proving that iron-iron interatomic potential is significantly weakened in the presence of a large number of diffusing hydrogen atoms.
Prevalencia de Consumo de alcohol en estudiantes universitarios de enfermería. Test AUDIT
Creators: name: CORTAZA, LETICIA
Publisher: name: figshare
Year: 2022
Subjects: subject: 111002 Clinical Nursing: Primary (Preventative)
subject: FOS: Health sciences

description: Cuestionario utilizado en el estudio "Prevalencia de consumo de alcohol en estudiantes universitarios de enfermería". Instrumento diseñado por la OMS
Self-pulsation in fiber-coupled on-chip microcavity lasers
Creators: name: He, Lina
name: Ozdemir, Sahin Kaya
name: Zhu, Jiangang
name: Yang, Lan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report self-pulsation in an erbium-doped silica toroidal microcavity laser coupled to a tapered fiber and investigate the effects of pump power and taper-cavity coupling condition on the dynamic behaviors of the pulse train. The microcavity is pumped at 1444.8 nm, and lasing occurs at 1560.2 nm with a threshold of 12 μW. Experimental results are interpreted within the framework of ion-pair induced self-quenching model.
description: 5 pages, 5 figures, 17 references
Dissipative processes in superfluid neutron stars
Creators: name: Mannarelli, Massimo
name: Colucci, Giuseppe
name: Manuel, Cristina
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present some results about a novel damping mechanism of r-mode oscillations in neutron stars due to processes that change the number of protons, neutrons and electrons. Deviations from equilibrium of the number densities of the various species lead to the appearance in the Euler equations of the system of a dissipative mechanism, the so-called rocket effect. The evolution of the r-mode oscillations of a rotating neutron star are influenced by the rocket effect and we present estimates of the corresponding damping timescales. In the description of the system we employ a two-fluid model, with one fluid consisting of all the charged components locked together by the electromagnetic interaction, while the second fluid consists of superfluid neutrons. Both components can oscillate however the rocket effect can only efficiently damp the countermoving r-mode oscillations, with the two fluids oscillating out of phase. In our analysis we include the mutual friction dissipative process between the neutron superfluid and the charged component. We neglect the interaction between the two r-mode oscillations as well as effects related with the crust of the star. Moreover, we use a simplified model of neutron star assuming a uniform mass distribution.
description: 3 pages, 2 figure, Contribution to the proceedings of `Quark Confinement And The Hadron Spectrum IX', Madrid, Sept. 2010
Physical layer security in MIMO power line communication networks
Creators: name: Zhuang, Yifei
Publisher: name: University of British Columbia
Year: 2014

description: It has been well established that multiple-input multiple-output (MIMO) transmission using multiple conductors can improve the data rate of power line communication (PLC) systems. In this thesis, we investigate whether the presence of multiple conductors could also facilitate the communication of confidential messages by means of physical layer security methods. In particular, this thesis focuses on the secrecy capacity of MIMO PLC. Numerical experiments show that multi-conductor PLC networks can enable a more secure communication compared to the single conductor case. On the other hand, we demonstrate that the keyhole property of PLC channels generally diminishes the secure communication capability compared to what would be achieved in a similar wireless communications setting. Furthermore, we consider the cases of unknown and partially known channel state information (CSI) about the eavesdropper channel. For this purpose, we provide deterministic channel uncertainty model parameters for PLC networks via the bottom-up channel modelling method. Numerical results show how imperfect CSI has a negative impact on secure communication, and enable us to analyze the tradeoff between choosing different transmission strategies that correspond to unknown CSI and partially known CSI.
Cosmographic constraints on a class of Palatini f(R) gravity
Creators: name: Pires, N.
name: Santos, J.
name: Alcaniz, J. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Modified gravity, known as $f(R)$ gravity, has presently been applied to Cosmology as a realistic alternative to dark energy. For this kind of gravity the expansion of the Universe may accelerate while containing only baryonic and cold dark matter. The aim of the present investigation is to place cosmographic constraints on the class of theories of the form $f(R)=R - α/R^n$ within the Palatini approach. Although extensively discussed in recent literature and confronted with several observational data sets, cosmological tests are indeed inconclusive about the true signal of $n$ in this class of theories. This is particularly important to define which kind of corrections (infra-red or high-energy) to general relativity this class of theory indeed represent. We shed some light on this question by examining the evolution of the deceleration parameter $q(z)$ for these theories. We find that for a large range of $α$, models based on $f(R) = R - α/R^{n}$ gravity in the Palatini approach can only have positive values for $n$, placing thus a broad restriction on this class of gravity.
description: 4 pages, 2 figures, Latex, Submitted
Temperature distribution of a non-flaring active region from simultaneous Hinode XRT and EIS observations
Creators: name: Testa, Paola
name: Reale, Fabio
name: Landi, Enrico
name: DeLuca, Ed
name: Kashyap, Vinay
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyze coordinated Hinode XRT and EIS observations of a non-flaring active region to investigate the thermal properties of coronal plasma taking advantage of the complementary diagnostics provided by the two instruments. In particular we want to explore the presence of hot plasma in non-flaring regions. Independent temperature analyses from the XRT multi-filter dataset, and the EIS spectra, including the instrument entire wavelength range, provide a cross-check of the different temperature diagnostics techniques applicable to broad-band and spectral data respectively, and insights into cross-calibration of the two instruments. The emission measure distribution, EM(T), we derive from the two datasets have similar width and peak temperature, but show a systematic shift of the absolute values, the EIS EM(T) being smaller than XRT EM(T) by approximately a factor 2. We explore possible causes of this discrepancy, and we discuss the influence of the assumptions for the plasma element abundances. Specifically, we find that the disagreement between the results from the two instruments is significantly mitigated by assuming chemical composition closer to the solar photospheric composition rather than the often adopted "coronal" composition (Feldman 1992). We find that the data do not provide conclusive evidence on the high temperature (log T[K] >~ 6.5) tail of the plasma temperature distribution, however, suggesting its presence to a level in agreement with recent findings for other non-flaring regions.
description: 14 pages, 15 figures. Accepted for publication in the Astrophysical Journal
A holographic approach to low-energy weak interactions of hadrons
Creators: name: Cappiello, Luigi
name: Cata, Oscar
name: D'Ambrosio, Giancarlo
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We apply the double-trace formalism to incorporate nonleptonic weak interactions of hadrons into holographic models of the strong interactions. We focus our attention upon $ΔS=1$ nonleptonic kaon decays. By working with a Yang-Mills--Chern-Simons 5-dimensional action, we explicitly show how, at low energies, one recovers the $ΔS=1$ weak chiral Lagrangian for both the anomalous and nonanomalous sectors. We provide definite predictions for the low energy coefficients in terms of the AdS metric and argue that the double-trace formalism is a 5-dimensional avatar of the Weak Deformation Model introduced long ago by Ecker et al. As a significant phenomenological application, we reassess the $K\to 3π$ decays in the light of the holographic model. Previous models found a fine-tuned cancellation of resonance exchange in these decays, which was both conceptually puzzling and quantitatively in disagreement with experimental results. The holographic model we build is an illustrative counterexample showing that the cancellation encountered in the literature is not generic but a model-dependent statement and that agreement with experiment can be obtained.
description: 20 pages
Hemacroneuria mengyuanae Huo & Zhu & Du 2021, sp. nov.
Creators: name: Huo, Qing-bo
name: Zhu, Bin-Qing
name: Du, Yu-Zhou
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Hemacroneuria
Hemacroneuria mengyuanae

description: Hemacroneuria mengyuanae Huo & Du, sp. nov. (Figs. 14–16) Male: Forewing length ca. 21 mm, hindwing length 19 mm, body length 17 mm. Color dark black, with green and indigo blue metallic luster. Triocellate, anterior ocellus much smaller. Antennae and palpi black. Pronotum rectangular, width about 2X of its length, corners obtuse and lateral margins rounded. Wide black stripe in middle 40% of pronotum containing prominent rugosities, lateral margins bright orange, a narrow white stripe at posterior of black stripe. Wing membranes and vein dark, costal area hyaline (Fig. 14). Abdomen dark brown with slight blue luster (Fig. 15). Tergum 10 with a pair of posterolateral bumps bearing sensilla basiconica patches; anterior margin separated by a pale, longitudinal median notch. Paraprocts bright orange, triangular and wide, curved anteriorly. Hammer large, transversely rounded, and covered by distinct dark granules, slightly elevated in lateral view; surrounded by a large yellowish, axe shape area. Aedeagus membranous, shape similar to H. violacea, but most of surface with a few visible ventral spinules (Fig. 16). Type material: Holotype: 1♂ (ICYZU), China, Guangdong Province, Shaoguan City, Nanling National Forest Park, 840 m, 24°54'60" N, 113°2'3" E, 2021-IV-20, leg. Zhao Meng-Yuan. Etymology: The species is named in honor of Miss. Zhao Meng-Yuan, the collector. Distribution: China (Guangdong Province). Remark: The new species is similar to H. violacea but can be distinguished by the orange lateral margins of pronotum, orange paraprocts, and the large pale area around the hammer. Specimen was collected by a small river (width: 5~ 10m) surrounded by dense riparian vegetation.
description: Published as part of Huo, Qing-bo, Zhu, Bin-Qing & Du, Yu-Zhou, 2021, New illustrations, new species and new combination of Hemacroneuria Enderlein (Plecoptera: Perlidae) from China, pp. 563-576 in Zootaxa 5032 (4) on page 571, DOI: 10.11646/zootaxa.5032.4.6, http://zenodo.org/record/5499090
Planar Josephson Tunnel Junctions in an Asymmetric Magnetic Field
Creators: name: Monaco, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We analyze the consequences resulting from the asymmetric boundary conditions imposed by a non-uniform external magnetic field at the extremities of a planar Josephson tunnel junction and predict a number of testable signatures. When the junction length $L$ is smaller than its Josephson penetration depth $λ_j$, static analytical calculations lead to a Fresnel-like magnetic diffraction pattern, rather than a Fraunhofer-like one typical of a uniform field. Numerical simulations allow to investigate intermediate length ($L\approx λ_j$) and long ($L>λ_j$) junctions. We consider both uniform and $δ$-shaped bias distributions. We also speculate on the possibility of exploiting the unique static properties of this system for basic experiments and devices.
description: 9 pages, 3 figures
Casimir Effect at finite temperature for the Kalb-Ramond field
Creators: name: Belich, H.
name: Silva, L. M.
name: Helayël-Neto, J. A.
name: Santana, A. E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the thermofield dynamics (TFD) formalism to obtain the energy-momentum tensor for the Kalb-Ramond (KR) field in a topology $% S^{1}\times S^{1}\times R^{2}$. The compactification is carried out by a generalized TFD-Bogoliubov transformation that is used to define a renormalized energy-momentum tensor. The expressions for the Casimir energy and pressure at finite temperature are then derived. A comparative analysis with the electromagnetic case is developed, and the results may be important for applications, as in cuprate superconductivity, for instance.
description: 15 pages, no figures
Improved phase gate reliability in systems with neutral Ising anyons
Creators: name: Clarke, David J.
name: Shtengel, Kirill
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent proposals using heterostructures of superconducting and either topologically insulating or semiconducting layers have been put forth as possible platforms for topological quantum computation. These systems are predicted to contain Ising anyons and share the feature of having only neutral edge excitations. In this note, we show that these proposals can be combined with the recently proposed "sack geometry" for implementation of a phase gate in order to conduct robust universal quantum computation. In addition, we propose a general method for adjusting edge tunneling rates in such systems, which is necessary for the control of interferometric devices. The error rate for the phase gate in neutral Ising systems is parametrically smaller than for a similar geometry in which the edge modes carry charge: it goes as $T^3$ rather than $T$ at low temperatures. At zero temperature, the phase variance becomes constant at long times rather than carrying a logarithmic divergence.
description: 5 pages, 1 figure
{Once more about astrophysical $S$ factor for the $α+ d \to {}^{6}{\rm Li} + γ$ reaction
Creators: name: Mukhamedzhanov, A. M.
name: Irgaziev, B. F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Recently to study the radiative capture $α+ d \to {}^{6}{\rm Li} + γ$ process a new measurement of the ${}^{6}{\rm Li}({\rm A\,150\,MeV})$ dissociation in the field of ${}^{208}{\rm Pb}$ has been reported in [F. Hammache {\it et al.} Phys. Rev ${\bf C 82}$, 065803 (2010)]. However, the dominance of the nuclear breakup over the Coulomb one prevented from obtaining the information about the $α+ d \to {}^{6}{\rm Li} + γ$ process from the breakup data. The astrophysical $S_{24}(E)$ factor has been calculated within the $α-d$ two-body potential model with potentials determined from the fits to the $α-d$ elastic scattering phase shifts. However, the scattering phase shift itself doesn't provide a unique $α-d$ bound state potential, which is the most crucial input when calculating the $S_{24}(E)$ astrophysical factor at astrophysical energies. In this work we emphasize an important role of the asymptotic normalization coefficient (ANC) for ${}^{6}{\rm Li} \to α+ d$, which controls the overall normalization of the peripheral $α+ d \to {}^{6}{\rm Li} + γ$ process and is determined by the adopted $α-d$ bound state potential. We demonstrate that the ANC previously determined from the $α-d$ elastic scattering $s$-wave phase shift in [Blokhintsev {\it et. al} Phys. Rev. {\bf C 48}, 2390 (1993)] gives $S_{24}(E)$, which is at low energies about 38% lower than the one reported in [F. Hammache {\it et al.} Phys. Rev ${\bf C 82}$, 065803 (2010)]. We recalculate also the reaction rates, which are also lower than those obtained in [F. Hammache {\it et al.} Phys. Rev ${\bf C 82}$, 065803 (2010)].
description: 6 pages and 2 figures
Resource allocation and performance evaluation in heterogeneous and relay-based wireless networks
Creators: name: Boostanimehr, Hamidreza
Publisher: name: University of British Columbia
Year: 2014

description: In the last decade, mobile data demand has been exponentially growing. Telecommunication industry finds it increasingly difficult to cope with this exponential growth through conventional cellular networks with carefully planned high power macro base stations (BSs). Therefore, the densification of BSs through introduction of low power BSs has been considered for implementation. The combination of macro BSs and low power BSs such as pico and femto BSs as well as relay nodes is referred to as heterogeneous networks (HetNets). HetNets impose major technical challenges in implementation such as severe interference cases and imbalance of load among macro BSs and low power BSs. One problem that needs to be re-addressed in the context of HetNets is the cell association problem. Although centralized cell association schemes are important in realizing the potentials of HetNets, mobile operators are interested in distributed schemes in which network elements decide based on their local information. In this thesis, we consider distributed cell association algorithms with quality of service provisioning. First, we propose a unified cell association algorithm that is particularly designed for downlink. Next, we consider uplink to have a downlink and uplink aware cell association scheme. The performances of the proposed schemes are examined through numerical simulations. Cooperative relay-based communication combined with orthogonal frequency division multiplexing (OFDM) and its multi access variant, orthogonal frequency division multiple access (OFDMA) has gained an immense interest in the last decade. Among all the research topics in OFDM relay-based communication, analyzing the outage behavior has been an invariable concern to researchers. To analyze the outage behavior, most of the researchers ignore the correlation between OFDM subchannels, and also assume equal bit allocation on all the subchannels. In this thesis, we analyze the outage behavior of a three-node OFDM relay-based network when these two assumptions are relaxed. Next, we characterize the global outage probability of a multi-user single-relay OFDMA network. Finally, a network consisting of a cluster of source-destination pairs and a cluster of relays is considered where we propose a low complexity relay allocation scheme. The outage analyses and the relay allocation scheme are examined through numerical simulations.
More on Asymptotically Anti-de Sitter Spaces in Topologically Massive Gravity
Creators: name: Henneaux, Marc
name: Martinez, Cristian
name: Troncoso, Ricardo
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently, the asymptotic behaviour of three-dimensional anti-de Sitter gravity with a topological mass term was investigated. Boundary conditions were given that were asymptotically invariant under the two-dimensional conformal group and that included a fall-off of the metric sufficiently slow to consistently allow pp-wave type of solutions. Now, pp-waves can have two different chiralities. Above the chiral point and at the chiral point, however, only one chirality can be considered, namely the chirality that has the milder behaviour at infinity. The other chirality blows up faster than AdS and does not define an asymptotically AdS spacetime. By contrast, both chiralities are subdominant with respect to the asymptotic behaviour of AdS spacetime below the chiral point. Nevertheless, the boundary conditions given in the earlier treatment only included one of the two chiralities (which could be either one) at a time. We investigate in this paper whether one can generalize these boundary conditions in order to consider simultaneously both chiralities below the chiral point. We show that this is not possible if one wants to keep the two-dimensional conformal group as asymptotic symmetry group. Hence, the boundary conditions given in the earlier treatment appear to be the best possible ones compatible with conformal symmetry. In the course of our investigations, we provide general formulas controlling the asymptotic charges for all values of the topological mass (not just below the chiral point).
description: 27 pages
Evaluating force field accuracy with long-time simulations of a tryptophan zipper peptide
Creators: name: Hayre, Natha R.
name: Singh, Rajiv R. P.
name: Cox, Daniel L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Biomolecules (q-bio.BM)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We have combined a custom implementation of the fast multiple-time-stepping LN integrator with parallel tempering to explore folding properties of small peptides in implicit solvent on the time scale of microseconds. We applied this algorithm to the synthetic β-hairpin trpzip2 and one of its sequence variants W2W9. Each simulation consisted of over 12 μs of aggregated virtual time. Several measures of folding behavior showed convergence, allowing comparison with experimental equilibrium properties. Our simulations suggest that the electrostatic interaction of tryptophan sidechains is responsible for much of the stability of the native fold. We conclude that the ff99 force field combined with ff96 ϕ and ψ dihedral energies and implicit solvent can reproduce plausible folding behavior in both trpzip2 and W2W9.
description: 10 pages, 11 figures, submitted to the Journal of Chemical Physics on June 28, 2010
Low Energy Coherent Transport in Metallic Carbon Nanotube Junctions
Creators: name: Maarouf, A. A.
name: Mele, E. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the low-energy electronic properties of a junction made of two crossed metallic carbon nanotubes of general chiralities. We derive a tight binding tunneling matrix element that couples low-energy states on the two tubes, which allows us to calculate the contact conductance of the junction. We find that the intrinsic asymmetries of the junction cause the forward and backward hopping probabilities from one tube to another to be different. This defines a zero-field Hall conductance for the junction, which we find to scale inversely with the junction contact conductance. Through a systematic study of the dependence of the junction conductance on different junction parameters, we find that the crossing angle is the dominant factor which determines the magnitude of the conductance.
description: 8 pages, 9 figures
Thermalization of a pump-excited Mott insulator
Creators: name: Eckstein, Martin
name: Werner, Philipp
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We use nonequilibrium dynamical mean-field theory in combination with a recently implemented strong-coupling impurity solver to investigate the relaxation of a Mott insulator after a laser excitation with frequency comparable to the Hubbard gap. The time evolution of the double occupancy exhibits a crossover from a strongly damped transient at short times towards an exponential thermalization at long times. In the limit of strong interactions, the thermalization time is consistent with the exponentially small decay rate for artificially created doublons, which was measured in ultracold atomic gases. When the interaction is comparable to the bandwidth, on the other hand, the double occupancy thermalizes within a few times the inverse bandwidth along a rapid thermalization path in which the exponential tail is absent. Similar behavior can be observed in time-resolved photoemission spectroscopy. Our results show that a simple quasi-equilibrium description of the electronic state breaks down for pump-excited Mott insulators characterized by strong interactions.
description: 8 pages, 4 figures
Additional file 1 of In-depth phenotyping for clinical stratification of Gaucher disease
Creators: name: D’Amore, Simona
name: Page, Kathleen
name: Donald, Aimée
name: Taiyari, Khadijeh
name: Tom, Brian
name: Deegan, Patrick
name: Tan, Chong Y.
name: Poole, Kenneth
name: Jones, Simon A.
name: Mehta, Atul
name: Hughes, Derralynn
name: Sharma, Reena
name: Lachmann, Robin H.
name: Chakrapani, Anupam
name: Geberhiwot, Tarekegn
name: Santra, Saikat
name: Banka, Siddarth
name: Cox, Timothy M.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file 1. Deep Phenotyping of Gaucher disease with supplementary materials, methods, results and references.
New Clues to the Impact Broadening Mystery in Radio Recombination Lines
Creators: name: Bell, M. B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Problems where impact broadened radio recombination lines appeared narrower than predicted first showed up ~40 years ago at frequencies below ~3 GHz. But it was soon found that the observations could be explained by throwing out the uniform density models and replacing them with variable density ones. However, this problem re-appeared recently when a mysterious line narrowing above quantum numbers of (n,Δn) = (202,8) was reported from sensitive observations of Orion and W51 near 6 GHz. Here it is demonstrated that the narrowing is unlikely to be caused by the data processing technique and therefore must be source related. It is further demonstrated that the observed line narrowing can be tied to one of the fundamental properties of radio recombination lines; namely the fact that the spacing of adjacent n-transitions increases with frequency. The line narrowing is observed to begin when the n-transition density, D_{n}, exceeds ~11.6 transitions per GHz. This may imply that it is somehow related either to a previously overlooked effect in the impact broadening process, or to some unknown parallel process, that is tied to the separation between adjacent n-transitions. Based on these results it can be concluded, as has also been concluded in several theoretical investigations, that the observed line narrowing is not tied to a fixed range of either n or Δn.
description: Eleven pages with 5 figures. Accepted for publication in Astrophysics & Space Science
Concussion balance and postural stability assessment system using kinetic data analysis
Creators: name: Liu, Lingyi
Publisher: name: University of British Columbia
Year: 2014

description: In current scientific literature, there are numerous approaches that clinicians can use to assess the static postural stability of patients. Among them, the Balance Error Scoring System is a notable method with merits such as cost-effectiveness and portability. Traditional measurement of errors made by patients in BESS test experiment relies on the manual inspection of sophisticated clinicians to the whole experiment process. A new avenue of detecting errors with wireless sensor network and signal processing technique can eliminate the instability from subjective evaluation in traditional method. This thesis present a reliable analytical system that can provide accurate evaluation on errors in BESS test of patient with concussion to assist clinicians to investigate their standing postural stability. In this research, the kinetic signal data is collected by wearable WSN equipment consisting of seven sensors embedded with accelerometer and gyroscope fixed on body of patients while they are completing BESS experiment. We use experimental data of 30 subjects to train back-propagation neural network and test the performance of neural network with testing data set. In this procedure, statistical technique such as principal component analysis and independent component analysis are applied in the step of signal pre-processing. Meanwhile, feature extraction is an alternative pre-processing technique for kinetic signal and the feature data serves as input data to train the neural network. With regard to target training data, the standard error information are acquired from the analysis of a group of researchers on video of the conducted experiment and we present them with Gaussian curve signal indicating the possibility of the error event. By testing the neural network, the technique of feature extraction in combination with back-propagation neural network is confirmed to account for the most optimal assessment of the postural error in BESS test. Furthermore, we can confirm the type of each detected error from six possible types of postural errors with neural network classification technique. Each type of error is corresponding to a certain unstable posture according to “BESS Protocol”. Ultimately, the presented error detecting system is convinced to supply reliable evaluation of the static postural stability of patients with concussion problem.
Synthesis of metal-organic frameworks from structure-directing iptycenyl lingands
Creators: name: Crane, Angela Karen
Publisher: name: University of British Columbia
Year: 2015

description: Metal-organic frameworks (MOFs) are of great interest as hydrogen storage materials for use in vehicles. A series of triptycene-containing and pentiptycene-containing organic ligands was synthesized, characterized and used for MOF formation. A total of five unique triptycene-containing MOFs (TMOFs) and three pentiptycene-containing MOFs (PMOFs) were synthesized and examined using X-ray diffraction studies. Although the structure of each MOF was unique, structural adaptions to incorporate the rigid, bulky, structure-directing ligand into the framework were observed. For example, in some cases extended pseudo-[Zn₄O]⁶⁺ secondary building units (SBUs) were present in order to distort the framework to allow the ligand to coordinate. Reaction conditions also proved to be important in determining the dimensionality of MOF. It was shown that slight modifications of the reaction conditions using the same organic ligand could produce a 1-D, 2-D, and 3-D framework with different SBUs. The use of a ditopic bridging ligand, such as 4,4´-bipyridine, can also be used to increase the dimensionality of a structure. This protocol was used in converting 1-D chain structures and 2-D sheet structures into 2-D sheet structures and 3-D pillared structures, respectively. The overall functional groups in the ligand backbone can also have an adverse effect in the MOF structure. It was found that flexible linkages often led to collapse of the framework structure, whereas rigid linkages led to more robust structures. Extension along the carboxylate axis was also found to be important for iptycene incorporation. Unfortunately such extensions often led to close-packed or interpenetrated systems, which diminished porosity in the framework. Lastly, the long-range ordering of a MOF structure was predicted using modelling of powder X-ray diffraction (PXRD) peaks. When no single-crystal data were obtained, the PXRD data could suggest whether a material had a hexagonal structure or cubic structure. In all cases thermal stability studies were carried out and it was found that these TMOF and PMOF materials were thermally stable up to 400 °C. These iptycene-containing materials had been highlighted as potential hydrogen storage materials due to the potential for high aromatic surface areas and well-defined pore structure. As a result, nitrogen adsorption experiments were conducted on several of the robust frameworks to assess surface area. In each case, low surface areas were found.
One-step implementation of multi-qubit conditional phase gating with nitrogen-vacancy centers coupled to a high-Q silica microsphere cavity
Creators: name: Yang, Wan-li
name: Yin, Zhang-qi
name: Xu, Zhen-yu
name: Feng, Mang
name: Du, Jiang-feng
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The diamond nitrogen-vacancy (NV) center is an excellent candidate for quantum information processing, whereas entangling separate NV centers is still of great experimental challenge. We propose an one-step conditional phase flip with three NV centers coupled to a whispering-gallery mode cavity by virtue of the Raman transition and smart qubit encoding. As decoherence is much suppressed, our scheme could work for more qubits. The experimental feasibility is justified.
description: 3 pages, 2 figures, Accepted by Appl. Phys. Lett
Pachyleuctra DESPAX 1929
Creators: name: Stark, Bill P.
name: Nelson, Charles H.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Leuctridae
Pachyleuctra

description: Pachyleuctra Despax, 1929 (Figs. 1–8) Leuctra (Pachyleuctra) Despax, 1929: 298, type species Leuctra (Pachyleuctra) montana Despax = Pachyleuctra benllochi (Navás, 1917) Adult habitus. Slightly brachypterous to macropterous in available specimens. General color of body and wings dark brown to black without distinctive contrasting pigment. Male genitalia (n = 3). Epiproct strongly reduced (Vinçon & Ravizza 2001). A moderately slender pair of long, closely appressed paraprocts (specilla) form a recurved probe that extends from below the cerci to above the apex of the abdomen (Fig. 3); apex of paraprocts recurved over abdomen, tips flattened and bearing a small circular orifice near the inner subapical margins (Figs. 2–4). Apical half of paraprocts bearing long slender setae along caudal surface and lateral surfaces of the apex (Figs. 3–4). Abdominal terga 5, 7–9 bear a median pair of spine-like lobes on the anterior segmental margins. Cerci somewhat conical in shape and bearing a small apical nipple-like process (Figs. 1–2). Sternum 9 bearing a circular, densely hairy vesicle (Figs. 5–6). Female genitalia (n = 2). Subgenital plate on sternum 8 consists primarily of a pair of ear-like lobes that extend from the basoposterior margin of sternum 8 across most of sternum 9 (Fig. 7). Lobes and much of sternum 8 clothed with long, slender setae. Mesosternum (n = 1). Mesosternal furcasternum circular in outline (Fig. 8); mesosternal basisternum bearing a narrow, dark, hairless median line that extends across at least half of the basisternum surface (Fig. 8). Mesosternal spinasternum relatively long, slender and distinctly separated from mesosternal postfurcasterna. Metasternal prefurcasterna united (Fig. 8).
description: Published as part of Stark, Bill P. & Nelson, Charles H., 2019, First Sem Micrographs Of Representatives Of Pachyleuctra Despax, 1929 And Tyrrhenoleuctra Consiglio, 1957 (Plecoptera: Leuctridae), pp. 98-106 in Illiesia 15 (6) on page 99, DOI: 10.5281/zenodo.4753114
description: {"references": ["Despax, R. 1929. Description sommaire d'un sousgenre nouveau et de deux especes nouvelles de genre Leuctra Steph (Plecoptera). Bulletin de la Societe Entomologique de France. 298 - 301.", "Vincon, G. & C. Ravizza. 2001. Leuctridae (Plecoptera) of the Pyrenees. Annales de Limnologie, 37: 293 - 322."]}
Pachyleuctra benllochi
Creators: name: Stark, Bill P.
name: Nelson, Charles H.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Leuctridae
Pachyleuctra
Pachyleuctra benllochi

description: P. benllochi (Navás, 1917), San Juan del Erm, Lérida, Spain http://lsid.speciesfile.org/urn:lsid: Plecoptera.speciesfile.org: TaxonName:4308 Material examined:  P. benllochi: FRANCE: Ger Tributary, Pyrenees Mountains, Mente Pass, 1300m, 27 May 1993, G. Vinçon, 5♂ 4♀ (VIN). SPAIN: Lleida, Pyrenees Mountains, Escrita River basin spring, 1809m, 2 July 2008, M.A. Puig, 1♂ (MAPC).
description: Published as part of Stark, Bill P. & Nelson, Charles H., 2019, First Sem Micrographs Of Representatives Of Pachyleuctra Despax, 1929 And Tyrrhenoleuctra Consiglio, 1957 (Plecoptera: Leuctridae), pp. 98-106 in Illiesia 15 (6) on page 99, DOI: 10.5281/zenodo.4753114
Brownian dynamics of a self-propelled particle in shear flow
Creators: name: Hagen, Borge ten
name: Wittkowski, Raphael
name: Löwen, Hartmut
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Brownian dynamics of a self-propelled particle in linear shear flow is studied analytically by solving the Langevin equation and in simulation. The particle has a constant propagation speed along a fluctuating orientation and is additionally subjected to a constant torque. In two spatial dimensions, the mean trajectory and the mean square displacement (MSD) are calculated as functions of time t analytically. In general, the mean trajectories are cycloids that are modified by finite temperature effects. With regard to the MSD different regimes are identified where the MSD scales with t^a with a = 0,1,2,3,4. In particular, an accelerated (a = 4) motion emerges if the particle is self-propelled along the gradient direction of the shear flow.
description: 6 pages, 4 figures
Tutorial para instalar o plugin do Cutter-Sanborn no Koha
Creators: name: Schiessl, Ingrid T,
Publisher: name: Zenodo
Year: 2019
Subjects: Plugin
Koha
Open source software
Tutorial

description: Tutorial para instalar o plugin do Cutter-Sanborn no Koha. Este tutorial foi desenvolvido no âmbito do projeto firmado entre a Secretaria Nacional de Juventude e o Instituto Brasileiro de Informação em Ciência e Tecnologia (Ibict). Este plugin permite que a notação do autor seja gerada automaticamente na planilha MARC21 no software Koha.