cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Changing climate variance and implications for the eastern deciduous forest of the United States
Creators: name: Hubbart, Jason A.
Publisher: name: F1000 Research Limited
Year: 2019

description: Background/Questions/Methods

For many regions of the Earth, anthropogenic climate change is expected to result in increasingly extreme climate conditions. However, contemporary analyses rarely consider the implications of change in variance of climate indices over time. This is of concern given little is known about how increasing (or decreasing) climate variance may affect short and long-term ecosystem productivity. Forest ecosystems may be particularly susceptible given specialized species niche adaptations. Investigations in the Eastern Deciduous Forest (EDF) biome stretching from the eastern (north-east West Virginia) to the midwestern United States (mid-Missouri; the western edge of the Biome) were undertaken to quantify rates and directions of climate variable changes including variance. Analyses included long-term data sets (e.g. 1906-2016) from multiple locations using historic climatology, global change modeling, and other regional data sources.

Results/Conclusions

A cross-system EDF analysis during growing season months showed that mean net ecosystem exchange (NEE, umol/m2/s) was -5.76, -3.22 and -3.52 in 2009 during a period of extreme wetness, and -4.68, -2.18, and -0.09 respectively, in 2012 (extreme drought) at ecosystem flux sites in Harvard forest, Morgan Monroe forest, and central Missouri, respectively. This finding suggests that at the western edge of the EDF net ecosystem exchange (NEE) may be more adversely impacted (relative to east) by ongoing increased precipitation, precipitation variance and excessive wetness. In the eastern portion of the EDF, analyses showed an increasingly wet and temperate climate characterized by warming minimum temperatures, cooling maximum temperatures, and increased annual precipitation that have accelerated during the second half (1959 to 2016) of the period of record relative to the first half (1958-2016). Trends also appear to be elevation dependent and may be accelerating with increasing forest age and increases in atmospheric moisture. Median air temperature and dew point values decreased with elevation at a rate of 5.2ºC km-1 and 3.5ºC km-1, respectively consistent with decreasing vapor pressure deficits (-0.30kPa km-1). Results imply that excessive (persistent) wetness may become the primary ecosystem stressor associated with climate change in the distinct Appalachian region of the EDF. Ultimately, collective results indicate rapidly changing (spatially heterogeneous) climate variance throughout the EDF. This work therefore serves as an alert to the need for studies of potential impacts of climate variance on forest ecosystem health and productivity. This is important to ensure sustainability of forest ecosystem services, health, and productivity in a swiftly changing climate across the broader EDF region and similar temperate forest ecosystems globally.
Functional BES equation
Creators: name: Kostov, Ivan
name: Serban, Didina
name: Volin, Dmytro
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a realization of the Beisert, Eden and Staudacher equation for the planar N=4 supersymetric gauge theory whichseems to be particularly useful to study the strong coupling limit. We use a linearized version of the BES equation as two coupled equations involving an auxiliary density function. We write these equations in terms of the resolvents and we transform them into to a system of functional, instead of integral, equations. We solve the functional equations perturbatively in the strong coupling limit and reproduce the recursive solution obtained by Basso, Korchemsky and Kotanski. The coefficients of the strong coupling expansion are fixed by the analyticity properties obeyed by the resolvents.
description: References added
title: Bulletin de la Société Paul Claudel. 2015-3, n° 217
title: Claudel et les écrivains contemporains
titleType: Subtitle
Creators: name: (:Unap)
Publisher: name: Classiques Garnier
Year: 2015
Subjects: subject: Lecteurs contemporains
subject: Innutrition
subject: Transmission
subject: Créativité
subject: Influence

description: Contributeurs : Pascale Alexandre-Bergues, François Cheng, Emmanuelle Devaux, Philippe Forest, Antoine Gallimard, Guy Goffette, Michel Lioure, Claude Louis-Combet, Gérard Macé, Catherine Mayaux, Marie-Victoire Nantet, Tetsuro Negishi, Jean-Pierre Siméon, Salah Stétié, Maria Tsoutsoura, André Velter, Anne Verdure-Mary et Michel Wasserman.
Additional file 2 of Prospective in-depth analysis of anaesthetic management of spontaneous ventilation VATS for lung cancer resection: a matched pairs comparison to intubated VATS
Creators: name: Mihatsch, Lorenz L.
name: Huber, Anastasia
name: Weiland, Sandra
name: Friederich, Patrick
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Virology

description: Supplementary Material 2
Meissner phases in spin-triplet ferromagnetic superconductors
Creators: name: Shopova, Diana V.
name: Uzunov, Dimo I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present new results for the properties of phases and phase transitions in spin-triplet ferromagnetic superconductors. The superconductivity of the mixed phase of coexistence of ferromagnetism and unconventional superconductivity is triggered by the presence of spontaneous magnetization. The mixed phase is stable but the other superconducting phases that usually exist in unconventional superconductors are either unstable or for particular values of the parameters of the theory some of them are metastable at relatively low temperatures in a quite narrow domain of the phase diagram. Phase transitions from the normal phase to the phase of coexistence is of first order while the phase transition from the ferromagnetic phase to the coexistence phase can be either of first or second order depending on the concrete substance. Cooper pair and crystal anisotropies determine a more precise outline of the phase diagram shape and reduce the degeneration of ground states of the system but they do not change drastically phase stability domains and thermodynamic properties of the respective phases. The results are discussed in view of application to metallic ferromagnets as UGe2, ZrZn2, URhGe.
description: 21 pages, 7 figures; Phys. Rev. B (2005) in press
Dynamics of test particles around renormalization group improved Schwarzschild black holes
Creators: name: Rayimbaev, Javlon
name: Abdujabbarov, Ahmadjon
name: Jamil, Mubasher
name: Ahmedov, Bobomurat
name: Han, Wen-Biao
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we have investigated the dynamics of neutral, electrically charged and magnetized particles around renormalized group improved (RGI) Schwarzschild black hole in the presence of external asymptotically uniform magnetic field. We have analyzed the spacetime structure around RGI black hole by investigating Ricci, the square of Ricci tensor and Kretschmann curvature scalars and shown that only in the case when the parameter $γ=0$ the curvature becomes infinite at the center of the black hole, while for non-zero values of $γ$ parameter the black hole curvature reflects the properties of regular black hole. Analyzing the innermost stable circular orbits of test neutral particles around RGI black hole and comparing with the results for rotating Kerr black hole we have shown that RGI black hole parameters can mimic the rotation parameter of Kerr black hole upto $a/M \lesssim 0.31$ providing the same ISCO radius. Since according to the astronomical observations of the accretion disks confirm that the astrophysical black holes are rapidly rotating with the spin parameter upto $a/M \sim 0.99$ one may conclude that the effects of parameters of RGI Schwarzschild black hole on the circular orbits of the neutral particles can not mimic the Kerr black hole. Then the Hamilton-Jacobi equation has been used to analyze the charged and magnetized particles motion near the RGI black hole in the presence of the strong interaction between external asymptotically uniform magnetic (electromagnetic) field and magnetized (electrically charged) particle. We have shown that RGI black hole parameters quantitatively change the dynamics of the charged and magnetized particles, in particular ISCO radius of the particles decreases with increasing the parameter $λ$, while the increase of the parameter $γ$ causes to increase of it.
description: 16 pages, 16 figures. arXiv admin note: text overlap with arXiv:2010.12863
Additional file 1 of Improving Cancer MDT performance in Western Sydney – three years’ experience
Creators: name: Evans, Lynleigh
name: Yiren Liu
name: Donovan, Brendan
name: Kwan, Terence
name: Byth, Karen
name: Harnett, Paul
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: Science Policy

description: Additional file 1. MDT Survey. Structured survey instrument used in this study.
Modular Forms and Three Loop Superstring Amplitudes
Creators: name: Cacciatori, Sergio L.
name: Piazza, Francesco Dalla
name: van Geemen, Bert
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a proposal of D'Hoker and Phong for the chiral superstring measure for genus three. A minor modification of the constraints they impose on certain Siegel modular forms leads to a unique solution. We reduce the problem of finding these modular forms, which depend on an even spin structure, to finding a modular form of weight 8 on a certain subgroup of the modular group. An explicit formula for this form, as a polynomial in the even theta constants, is given. We checked that our result is consistent with the vanishing of the cosmological constant. We also verified a conjecture of D'Hoker and Phong on modular forms in genus 3 and 4 using results of Igusa.
description: 25 pages
Jones matrix holography with metasurfaces
Creators: name: Rubin, Noah A.
name: Zaidi, Aun
name: Dorrah, Ahmed
name: Shi, Zhujun
name: Capasso, Federico
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a new class of computer generated holograms whose far fields possess designer-specified polarization response. We dub these Jones matrix holograms. We provide a simple procedure for their implementation using form-birefringent metasurfaces. Jones matrix holography generalizes a wide body of past work with a consistent mathematical framework, particularly in the field of metasurfaces, and suggests previously unrealized devices, examples of which are demonstrated here. In particular, we demonstrate holograms whose far-fields implement parallel polarization analysis and custom waveplate-like behavior.
description: 10 pages, 5 figures
The effects of deformation and pairing correlations on nuclear charge form factor
Creators: name: Moustakidis, Ch. C.
name: Kosmas, T. S.
name: Simkovic, F.
name: Faessler, Amand
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A set of moderately deformed $s-d$ shell nuclei is employed for testing the reliability of the nuclear ground state wave functions which are obtained in the context of a BCS approach and offer a simultaneous consideration of deformation and pairing correlations effects. In this method, the mean field is assumed to be an axially symmetric Woods-Saxon potential and the effective two-body interaction is a monopole pairing force. As quantities of main interest we have chosen the nuclear form factors, the occupancies of the active (surface) orbits and the Fermi sea depletion, which provide quite good tests for microscopic descriptions of nuclei within many body theories. For our comparisons with results emerging from other similar methods, an axially deformed harmonic oscillator field is also utilized.
description: 20 pages, 12 figures, 2 tables
Additional file 2 of Improving Cancer MDT performance in Western Sydney – three years’ experience
Creators: name: Evans, Lynleigh
name: Yiren Liu
name: Donovan, Brendan
name: Kwan, Terence
name: Byth, Karen
name: Harnett, Paul
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: Science Policy

description: Additional file 2. 2017–2019 Survey Data. 2017 to 2019 MDT member survey data.
Alfvenic reacceleration of relativistic particles in galaxy clusters in the presence of secondary electrons and positrons
Creators: name: Brunetti, G.
name: Blasi, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In a previous paper (Brunetti et al. 2004) we presented the first self-consistent calculations of the time-dependent coupled equations for the electrons, hadrons and Alfvén waves in the intracluster medium, which describe the stochastic acceleration of the charged particles and the corresponding spectral modification of the waves. Under viable assumptions, this system of mutually interacting components was shown to accurately describe several observational findings related to the radio halos in clusters of galaxies. In this paper, we add to the self-consistency of the calculations by including the generation and re-energization of secondary electrons and positrons, produced by the inelastic interactions of cosmic rays with the thermal gas in the intracluster medium. The bulk of Cosmic rays is expected to be confined within the cluster volume for cosmological times, so that the rate of production of secondary electrons, as well as gamma rays, may become correspondingly enhanced. If MHD waves are present, as it may be expected in the case of a recent merger event, then the reacceleration of secondary electrons and positrons can significantly affect the phenomenology of the non thermal processes in clusters. We investigate here these effects for the first time.
description: 17 pages, 6 figures, MNRAS in press
A Fully Integrated Sensor-Brain-Machine Interface System for Restoring Somatosensation
Creators: name: Liu, Xilin
name: Zhu, Hongjie
name: Qiu, Tian
name: Sritharan, Srihari Y.
name: Ge, Dengteng
name: Yang, Shu
name: Zhang, Milin
name: Richardson, Andrew G.
name: Lucas, Timothy H.
name: Engheta, Nader
name: Van der Spiegel, Jan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Systems and Control (eess.SY)
subject: FOS: Biological sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Sensory feedback is critical to the performance of neural prostheses that restore movement control after neurological injury. Recent advances in direct neural control of paralyzed arms present new requirements for miniaturized, low-power sensor systems. To address this challenge, we developed a fully-integrated wireless sensor-brain-machine interface (SBMI) system for communicating key somatosensory signals, fingertip forces and limb joint angles, to the brain. The system consists of a tactile force sensor, an electrogoniometer, and a neural interface. The tactile force sensor features a novel optical waveguide on CMOS design for sensing. The electrogoniometer integrates an ultra low-power digital signal processor (DSP) for real-time joint angle measurement. The neural interface enables bidirectional neural stimulation and recording. Innovative designs of sensors and sensing interfaces, analog-to-digital converters (ADC) and ultra wide-band (UWB) wireless transceivers have been developed. The prototypes have been fabricated in 180nm standard CMOS technology and tested on the bench and in vivo. The developed system provides a novel solution for providing somatosensory feedback to next-generation neural prostheses.
description: 12 pages, 17 figures
On the asymptotic behavior of some Algorithms
Creators: name: Robert, Philippe
Publisher: name: arXiv
Year: 2005
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Classical Analysis and ODEs (math.CA)
subject: Probability (math.PR)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: A simple approach is presented to study the asymptotic behavior of some algorithms with an underlying tree structure. It is shown that some asymptotic oscillating behaviors can be precisely analyzed without resorting to complex analysis techniques as it is usually done in this context. A new explicit representation of periodic functions involved is obtained at the same time.
description: November 2004
Characterization of VUV4 SiPM for Liquid Argon Detector
Creators: name: Wang, L.
name: Guan, M. Y.
name: Qin, H. J.
name: Guo, C.
name: Sun, X. L.
name: Yang, C. G.
name: Zhao, Q.
name: Liu, J. C.
name: Zhang, P.
name: Zhang, Y. P.
name: Xiong, W. X.
name: Wei, Y. T.
name: Gan, Y. Y.
name: Li, J. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Particle detectors based on liquid argon are now recognised as an attractive technology for dark matter direct detection and coherent elastic neutrino-nucleus scattering measurement. A program using a dual-phase liquid argon detector with a fiducial mass of 200~kg to detect coherent elastic neutrino-nucleus scattering at Taishan Nuclear Power Plant has been proposed. SiPMs will be used as the photon sensor because of their high radio-purity and high photon detection efficiency. S13370-6050CN SiPM, made by Hamamatsu, is a candidate for the detector. In this paper, the characterisation of S13370-6050CN SiPM, including the cross talk and after pulse probabilities at liquid argon temperature and the temperature dependence of break down voltage, dark counting rate and relative quantum efficiency were presented.
description: 17 pags, 15 figures
Oblate Electron Holes are not attributable to Anisotropic Shielding
Creators: name: Hutchinson, I H
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Shielding mechanisms' influence on the ratio of perpendicular to parallel scale lengths of multidimensional plasma electron hole equilibria are analyzed theoretically and computationally. It is shown that the ``gyrokinetic'' model, invoking perpendicular polarization, is based on a misunderstanding and cannot explain the observational trend that greater transverse extent accompanies lower magnetic field. Instead, the potential in the wings of the hole, outside the region of trapped-electron depletion, has isotropic shielding giving $ϕ\propto {\rm e}^{-r/L}/r$, with the shielding length $L$ equal to the Debye length for holes much slower than the electron thermal speed. Particle in cell simulations confirm the analysis.
Randomly Diluted e_g Orbital-Ordered Systems
Creators: name: Tanaka, T.
name: Matsumoto, M.
name: Ishihara, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dilution effects on the long-range ordered state of the doubly degenerate $e_g$ orbital are investigated. Quenched impurities without the orbital degree of freedom are introduced in the orbital model where the long-range order is realized by the order-from-disorder mechanism. It is shown by the Monte-Carlo simulation and the cluster-expansion method that a decrease in the orbital ordering temperature by dilution is remarkable in comparison with that in the randomly diluted spin models. Tiltings of orbitals around impurity cause this unique dilution effects on the orbital systems. The present theory provides a new view point for the recent experiments in KCu$_{1-x}$Zn$_x$F$_3$.
description: 4 pages, 4 figures
Qualitative and quantitative assessment of hydroquinone in skin whitening cosmetics in Pathum Thani Province, Thailand
Creators: name: Pataweekorn Ketkomol, Watchara Chongsa
Publisher: name: Faculty of Associated Medical Sciences, Chiang Mai University
Year: 2019
Subjects: Hydroquinone
skin whitening cosmetic
hydroquinone test kit-2
TLC
HPLC

description: Journal of Associated Medical Sciences, 52, 3, 170-174
Stochastic inequalities for single-server loss queueing systems
Creators: name: Abramov, Vyacheslav M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K25, 60E15

description: The present paper provides some new stochastic inequalities for the characteristics of the $M/GI/1/n$ and $GI/M/1/n$ loss queueing systems. These stochastic inequalities are based on substantially deepen up- and down-crossings analysis, and they are stronger than the known stochastic inequalities obtained earlier. Specifically, for a class of $GI/M/1/n$ queueing system, two-side stochastic inequalities are obtained.
description: 17 pages, 11pt To appear in Stochastic Analysis and Applications
Effects of Low-Dose X-ray on Oxidative State, Lipid Peroxidation, and Membrane Fluidity of Human Peripheral Blood Mononucleated Cells
Creators: name: Surangkanang Pochano, Krittanai Noitana
Publisher: name: Faculty of Associated Medical Sciences, Chiang Mai University
Year: 2019
Subjects: Low-dose X-rays
human peripheral blood mononuclear cell
reactive oxygen species
lipid peroxidation
membrane fluidity
malondialdehyde

description: Journal of Associated Medical Sciences, 52, 3, 193-198
Effect of the XmnI-Gg polymorphism on HbE and red blood cell parameters of Hb E carriers with and without SEA-? thalassemia 1
Creators: name: Prapapun Leckngam
name: Eakthong Limweeraprajak
name: Tiemjan Keawkarnkha
Publisher: name: Faculty of Associated Medical Sciences, Chiang Mai University
Year: 2019
Subjects: HbE carrier
SEA-? thalassemia 1 carrier
XmnI-G? polymorphism
RBC indices

description: Journal of Associated Medical Sciences, 52, 3, 199-204
Closing the $SU(3)_L\otimes U(1)_X$ Symmetry at Electroweak Scale
Creators: name: Dias, A. G.
name: Montero, J. C.
name: Pleitez, V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that some models with $SU(3)_C\otimes SU(3)_L\otimes U(1)_X$ gauge symmetry can be realized at the electroweak scale and that this is a consequence of an approximate global $SU(2)_{L+R}$ symmetry. This symmetry implies a condition among the vacuum expectation value of one of the neutral Higgs scalars, the $U(1)_X$'s coupling constant, $g_X$, the sine of the weak mixing angle $\sinθ_W$, and the mass of the $W$ boson, $M_W$. In the limit in which this symmetry is valid it avoids the tree level mixing of the $Z$ boson of the Standard Model with the extra $Z^\prime$ boson. We have verified that the oblique $T$ parameter is within the allowed range indicating that the radiative corrections that induce such a mixing at the 1-loop level are small. We also show that a $SU(3)_{L+R}$ custodial symmetry implies that in some of the models we have to include sterile (singlets of the 3-3-1 symmetry) right-handed neutrinos with Majorana masses, being the see-saw mechanism mandatory to obtain light active neutrinos. Moreover, the approximate $SU(2)_{L+R}\subset SU(3)_{L+R}$ symmetry implies that the extra non-standard particles of these 3-3-1 models can be considerably lighter than it had been thought before so that new physics can be really just around the corner.
description: 32 pages, no figure, RevTeX. Some typos corrected
Using self-determination theory to evaluate well-being and burnout of community pharmacists
Creators: name: Wash, Andrew Gene
name: 0000-0002-6630-7932
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Well-being
Burnout
Community pharmacists

description: This study used self-determination theory (SDT) to examine: 1) the relationships between basic psychological need (BPN) fulfillment, autonomous motivation, and well-being and burnout in community pharmacists, and 2) factors that impact BPN fulfillment. An online survey was designed based on SDT concepts. A grocery store chain and Community Pharmacy Enhanced Services Networks in Texas, Florida, and Iowa distributed the survey via e-newsletters in the Fall of 2022. The survey included measures of BPN fulfillment (24 items), autonomous motivation (18 items), burnout (22 items), positive mental health (14 items), perceived health (1 item), overall job satisfaction (1 item), depression risk (2 items), intention to leave their current job (1 item) or the pharmacy profession (1 item), and demographic/practice information (11 items). Descriptive statistics, structural equation modeling, and multiple linear regression were used for data analysis. There were 146 usable responses. Among the BPN (range 1 to 5, higher mean scores indicating higher fulfillment), fulfillment of the need for autonomy was the lowest (3.1±1.0). Overall need fulfillment was 3.8±0.7. For positive mental health, 53.4% had flourishing mental health; 6.9% had languishing mental health. Two-thirds met the high-risk criteria of ≥1 burnout symptom. Confirmatory factor analysis of each of the included scales indicated that none of the scales fit their intended factor structure without the addition of covariances between error terms, an indication of poor construct validity. For Objective 1, bivariate analyses indicated that BPN fulfillment was positively related to autonomous motivation, which was positively associated with well-being and negatively associated with ill-being. The full hypothesized model did not fit the data adequately. Exploratory methods indicated BPN fulfillment may have a strong positive effect on positive mental health and strong negative effects on burnout symptoms. For Objective 2, the model explained 25.7% of the variance in BPN fulfillment; the only significant predictor was working at an independent pharmacy. Although SDT may provide a useful framework for evaluating community pharmacist well-being and burnout, this study was limited by issues in construct measurement. Further work is needed to adapt measures to this population and investigate how BPN can be better fulfilled within community pharmacies
Application of multi-element geochemical methods to identify sediment sources and trace the transport of sediment in small (s4) streams before and after watershed disturbance
Creators: name: Christie, Tara Michelle
Publisher: name: University of British Columbia
Year: 2009

description: Although it is well-established that background geochemical patterns in stream sediments generally depend on drainage basin geology, little is known of the effects of watershed disturbance on such patterns. Here we report the effects of forestry activities on sediment geochemistry on the Interior Plateau of British Columbia. Samples of sediment were collected from six small streams in 1996, before logging, and in 1997, after clear-cutting. Samples were sieved to - 0.212 mm in grain size and analyzed by multi-element ICP after both a strong acid and a total decomposition. Field and analytical duplicates, and samples from unlogged control sites were used to estimate variations not associated with logging activities. Results show that prior to logging, each stream had a distinct multi-element geochemical signature related to drainage basin geology. There was no overall effect of logging on these signatures within or downstream of the cut-blocks - probably because unlogged buffer zones along the stream channels prevented the development of new sediment sources. Logging roads did, however, cause local changes of sediment geochemistry in two ways: 1. Construction of stream crossings and roadside ditches created new sources of sediment supply to the streams. Although of local origin, the newly exposed and eroding surficial materials contained more fine-grained material and had multi-element geochemical signatures that differed significantly from the mature fluvial sediments found in the stream channel before logging. Input of the new material resulted in geochemical anomalies that extended several hundred metres downstream from the source. In this study Co, Mg and Ni were found to have the largest concentration differences between sediment sources and sediments, and hence to gave the longest anomalous dispersion trains. 2. Abrasion of zinc from galvanized culverts resulted in zinc anomalies, with concentrations >200 ppm. These anomalies also extended several hundred meters downstream and persisted for at least five years after installation of culverts. The effects of logging roads on sediment geochemistry thus relate to the creation of new sources of local sediment, as well as, to the introduction of exotic materials into the stream. No geochemical response could be attributed to the clear-cut forest block. Such changes might develop eventually if soil erosion increases or if changes to the groundwater regime modify input of dissolved elements to the stream channel.
Dynamical symmetry breaking in transport through molecules
Creators: name: Donarini, Andrea
name: Grifoni, Milena
name: Richter, Klaus
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We analyze the interplay between vibrational and electronic degrees of freedom in charge transport across a molecular single-electron transistor. We focus on the wide class of molecules which possess quasi-degenerate vibrational eigenstates, while no degeneracy occurs for their anionic configuration. We show that the combined effect of a thermal environment and coupling to leads, involving tunneling events charging and discharging the molecule, leads to a dynamical symmetry breaking where quasi-degenerate eigenstates acquire different occupations. This imbalance gives rise to a characteristic asymmetry of the current versus an applied gate voltage.
description: 4 pages, 2 figures, revised final published version
Higgs production via gluon-gluon fusion with finite top mass beyond next-to-leading order
Creators: name: Marzani, Simone
name: Ball, Richard D.
name: Del Duca, Vittorio
name: Forte, Stefano
name: Vicini, Alessandro
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a computation of the cross section for inclusive Higgs production in gluon-gluon fusion for finite values of the top mass in perturbative QCD to all orders in the limit of high partonic center-of-mass energy. We show that at NLO the high energy contribution accounts for most of the difference between the result found with finite top mass and that obtained in the limit of infinite top mass. We use our result to improve the known NNLO order result obtained with infinite top mass. We estimate the effect of the high energy NNLO top mass dependence on the K factor to be of the order of a few per cent.
description: 20 pages, 5 figures, latex with epsfig
The Uncorrelated Universe: Statistical Anisotropy and the Vanishing Angular Correlation Function in WMAP Years 1-3
Creators: name: Copi, Craig J.
name: Huterer, Dragan
name: Schwarz, Dominik J.
name: Starkman, Glenn D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The large-angle (low-ell) correlations of the Cosmic Microwave Background (CMB) as reported by the Wilkinson Microwave Anisotropy Probe (WMAP) after their first year of observations exhibited statistically significant anomalies compared to the predictions of the standard inflationary big-bang model. We suggested then that these implied the presence of a solar system foreground, a systematic correlated with solar system geometry, or both. We re-examine these anomalies for the data from the first three years of WMAP's operation. We show that, despite the identification by the WMAP team of a systematic correlated with the equinoxes and the ecliptic, the anomalies in the first-year Internal Linear Combination (ILC) map persist in the three-year ILC map, in all-but-one case at similar statistical significance. The three-year ILC quadrupole and octopole therefore remain inconsistent with statistical isotropy -- they are correlated with each other (99.6% C.L.), and there are statistically significant correlations with local geometry, especially that of the solar system. The angular two-point correlation function at scales >60 degrees in the regions outside the (kp0) galactic cut, where it is most reliably determined, is approximately zero in all wavebands and is even more discrepant with the best fit LambdaCDM inflationary model than in the first-year data - 99.97% C.L. for the new ILC map. The full-sky ILC map, on the other hand, has a non-vanishing angular two-point correlation function, apparently driven by the region inside the cut, but which does not agree better with LambdaCDM. The role of the newly identified low-ell systematics is more puzzling than reassuring.
description: 18 pages, 7 figures, minor additions to refs and conclusions in v2. High resolution figures, multipole vector code and other information can be found at http://www.phys.cwru.edu/projects/mpvectors/
Planck Fluctuations, Measurement Uncertainties and the Holographic Principle
Creators: name: Requardt, Manfred
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Starting from a critical analysis of recently reported surprisingly large uncertainties in length and position measurements deduced within the framework of quantum gravity, we embark on an investigation both of the correlation structure of Planck scale fluctuations and the role the holographic hypothesis is possibly playing in this context. While we prove the logical independence of the fluctuation results and the holographic hypothesis (in contrast to some recent statements in that direction) we show that by combining these two topics one can draw quite strong and interesting conclusions about the fluctuation structure and the microscopic dynamics on the Planck scale. We further argue that these findings point to a possibly new and generalized form of quantum statistical mechanics of strongly (anti)correlated systems of degrees of freedom in this fundamental regime.
description: 19 pages, Latex, no figures, some new references, to appear ModPhysLett A
Tough sheets of nanowires produced floating in the gas phase
Creators: name: Schäufele, Richard S.
name: Vazquez-Pufleau, Miguel
name: Vilatela, Juan J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Assembling nanostructured building blocks into network materials unlocks macroscopic properties inaccessible with monolithic solids, notably toughness and tolerance to electrochemical alloying. A method is reported for large-scale, continuous synthesis of silicon nanowires (SiNWs) suspended in the gas phase and their direct assembly into macroscopic sheets. Performing gas-phase growth of SiNWs through floating catalyst chemical vapor deposition using an aerosol of gold nanoparticles eliminates the need for substrates, increasing the growth rate by a factor of 500, reaching 1.4 $μ$m s$^{-1}$ and leading to very long SiNWs. The combined high aspect ratio ($>$210) and large concentration of SiNWs in the gas-phase (1.5 x 107 cm$^{-3}$) enable the formation of macroscopic solids solely composed of percolated SiNWs, such as free-standing sheets and continuous metre-long SiNW tapes. Sheet samples of small diameter SiNWs ($
description: 12 pages, 4 figure, 1 table
Growing Deep Forests Efficiently with Soft Routing and Learned Connectivity
Creators: name: Shen, Jianghao
name: Wang, Sicheng
name: Wang, Zhangyang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Despite the latest prevailing success of deep neural networks (DNNs), several concerns have been raised against their usage, including the lack of intepretability the gap between DNNs and other well-established machine learning models, and the growingly expensive computational costs. A number of recent works [1], [2], [3] explored the alternative to sequentially stacking decision tree/random forest building blocks in a purely feed-forward way, with no need of back propagation. Since decision trees enjoy inherent reasoning transparency, such deep forest models can also facilitate the understanding of the internaldecision making process. This paper further extends the deep forest idea in several important aspects. Firstly, we employ a probabilistic tree whose nodes make probabilistic routing decisions, a.k.a., soft routing, rather than hard binary decisions.Besides enhancing the flexibility, it also enables non-greedy optimization for each tree. Second, we propose an innovative topology learning strategy: every node in the ree now maintains a new learnable hyperparameter indicating the probability that it will be a leaf node. In that way, the tree will jointly optimize both its parameters and the tree topology during training. Experiments on the MNIST dataset demonstrate that our empowered deep forests can achieve better or comparable performance than [1],[3] , with dramatically reduced model complexity. For example,our model with only 1 layer of 15 trees can perform comparably with the model in [3] with 2 layers of 2000 trees each.
description: ICDM workshop 2018
Spin and orbital valence bond solids in a one-dimensional spin-orbital system: Schwinger boson mean field theory
Creators: name: Li, Peng
name: Shen, Shun-Qing
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A generalized one-dimensional $SU(2)\times SU(2)$ spin-orbital model is studied by Schwinger boson mean-field theory (SBMFT). We explore mainly the dimer phases and clarify how to capture properly the low temperature properties of such a system by SBMFT. The phase diagrams are exemplified. The three dimer phases, orbital valence bond solid (OVB) state, spin valence bond solid (SVB) state and spin-orbital valence bond solid (SOVB) state, are found to be favored in respectively proper parameter regions, and they can be characterized by the static spin and pseudospin susceptibilities calculated in SBMFT scheme. The result reveals that the spin-orbit coupling of $SU(2)\times SU(2)$ type serves as both the spin-Peierls and orbital-Peierles mechanisms that responsible for the spin-singlet and orbital-singlet formations respectively.
description: 6 pages, 3 figures
Antiferromagnets with random vacancies and substitutional spins on the triangular lattice
Creators: name: Syromyatnikov, A. V.
name: Timkovskii, F. D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discuss theoretically static and dynamical properties of $XY$ and Heisenberg antiferromagnets on triangular lattice with random vacancies and substitutional spins. It is shown that the distortion of $120^\circ$ magnetic order produced by a single defect is described by electrostatic equations for a field of an electrically neutral complex of six charges located around the impurity. The first finite term in the multipole expansion of this field is the octupole moment which decays as $1/r^3$ with the distance $r$. The linearity of equations allows to describe analytically the distortion of the long-range magnetic order at a small concentration $c$ of defects. We obtain analytically renormalization of the elastic neutron scattering cross section and the magnon spectrum $ε_{\bf k}$ in the leading order in $c$. We find that the scattering on impurities renormalizes weakly the bare spectrum $ε_{\bf k}\propto k$ at $k\gg\sqrt c$. However the renormalization is substantial of the long-wavelength magnon spectrum at $k\ll\sqrt c$: $ε_{\bf k}\propto \sqrt{c /\ln(1/k)}$ at $k\to0$ and there is a parametrically large region in which magnons with not too small momenta are overdamped and localized. This strong modification of the long-wavelength spectrum leads to the stabilization of the slightly distorted magnetic long-range order at $T
description: 15 pages, 4 figures
Gaia18aen: First symbiotic star discovered by Gaia
Creators: name: Merc, J.
name: Mikołajewska, J.
name: Gromadzki, M.
name: Gałan, C.
name: Iłkiewicz, K.
name: Skowron, J.
name: Wyrzykowski, Ł.
name: Hodgkin, S. T.
name: Rybicki, K. A.
name: Zieliński, P.
name: Kruszyńska, K.
name: Godunova, V.
name: Simon, A.
name: Reshetnyk, V.
name: Lewis, F.
name: Kolb, U.
name: Morrell, M.
name: Norton, A. J.
name: Awiphan, S.
name: Poshyachinda, S.
name: Reichart, D. E.
name: Greet, M.
name: Kolgjini, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Besides the astrometric mission of the Gaia satellite, its repeated and high-precision measurements serve also as an all-sky photometric transient survey. The sudden brightenings of the sources are published as Gaia Photometric Science Alerts and are made publicly available allowing the community to photometrically and spectroscopically follow-up the object. The goal of this paper was to analyze the nature and derive the basic parameters of Gaia18aen, transient detected at the beginning of 2018. It coincides with the position of the emission line star WRAY 15-136. The brightening was classified as a "nova?" on the basis of subsequent spectroscopic observation. We have analyzed two spectra of Gaia18aen and collected the available photometry of the object covering the brightenings in 2018 and also the preceding and following periods of quiescence. Based on this observational data, we have derived the parameters of Gaia18aen and discussed the nature of the object. Gaia18aen is the first symbiotic star discovered by the Gaia satellite. The system is an S-type symbiotic star and consists of an M giant of a slightly super-solar metallicity, with Teff ~3500 K, a radius of ~230 R$\odot$, and a high luminosity L ~7400 L$\odot$. The hot component is a hot white dwarf. We tentatively determined the orbital period of the system ~487 days. The main outburst of Gaia18aen in 2018 was accompanied by a decrease in the temperature of the hot component. The first phase of the outburst was characterized by the high luminosity L ~27000 L$\odot$, which remained constant for about three weeks after the optical maximum, later followed by the gradual decline of luminosity and increase of temperature. Several re-brightenings have been detected on the timescales of hundreds of days.
description: accepted for publication in Astronomy & Astrophysics; 10 pages, 10 figures, 5 tables
Additional file 1 of Implant design affects walking and stair navigation after total knee arthroplasty: a double-blinded randomised controlled trial
Creators: name: Komaris, Dimitrios-Sokratis
name: Cheral Govind
name: Murphy, Andrew James
name: Clarke, Jon
name: Ewen, Alistair
name: Leonard, Hollie
name: Riches, Philip
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1:. Table 1 Knee kinetic parameters in stair ascent.
title: Progress on trial: how national timescapes shape postcolonial reconciliation
Creators: name: Hampe-Nathaniel, Astrid
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2021

description: This thesis argues that it is our very idea of progress, codified in law, which obstructs real progress when it comes to postcolonial reconciliation. This affects three discourses: (1) the academic debate on the rectification of historical injustice; (2) legal theory and practice in the fields of constitutional law, international criminal law and international human rights law; (3) the intensifying activist struggle for recognition of historically marginalised groups. Drawing on the methods of archival research, legal analysis and normative critique, I establish a comparative analysis of how different countries deal with their colonial past to find out why full historical reconciliation is so difficult to achieve. Part I searches for the origins of the globally dominant conception of progress and locates them firmly within the history of the West. Chapter 1 argues that the historical injustice debate is stuck because both proponents and opponents of redress rely on the same conception of time: Liberal Time. Chapter 2 traces the emergence of inherently progressive Liberal Time back to the impact which Christianity, the French Revolution and industrialisation had on European intellectual history. Chapter 3 shows how Liberal Time spread worldwide when it became a justification and tool for European imperial expansion. The conclusion of part I is thus that the conception of time that built Empire also impedes its dissolution. Part II engages in a comparative discourse analysis of three major trials in which the liberal Western ideal of progress was challenged. The trials reveal a shared imaginary of progress, but also differences in how national timescapes shape historical reconciliation. Chapter 4 shows that Britain’s cult of continuity makes the public acknowledgement of colonial wrongs comparatively easy. Chapter 5 posits that France’s foundational revolutionary rupture makes a productive dialogue about the past virtually impossible. Chapter 6 suggests that the US offers a synthesis between rupture and continuity, when measuring American progress against the ideals of the American Revolution. Chapter 7 distils these findings into the following predicament: the Western promise of progress cannot be fulfilled so long as our institutions defend an idea of progress which is itself oppressive and exclusionary.