cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gapless quantum spin liquid in a honeycomb $Γ$ magnet
Creators: name: Luo, Qiang
name: Zhao, Jize
name: Kee, Hae-Young
name: Wang, Xiaoqun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A family of spin-orbit coupled honeycomb Mott insulators offers a playground to search for quantum spin liquids (QSLs) via bond-dependent interactions. In candidate materials, a symmetric off-diagonal $Γ$ term, close cousin of Kitaev interaction, has emerged as another source of frustration that is essential for complete understanding of these systems. However, the ground state of honeycomb $Γ$ model remains elusive, with a suggested zigzag magnetic order. Here we attempt to resolve the puzzle by perturbing the $Γ$ region with a staggered Heisenberg interaction which favours the zigzag ordering. Despite such favour, we find a wide disordered region inclusive of the $Γ$ limit in the phase diagram. Further, this phase exhibits a vanishing energy gap, a collapse of excitation spectrum, and a logarithmic entanglement entropy scaling on long cylinders, indicating a gapless QSL. Other quantities such as plaquette-plaquette correlation are also discussed.
description: 11+16 pages. npj Quantum Materials (in press). Typos (e.g., central charge) are fixed. Some additional results and references will be considered in future
Exploiting weak field gravity-Maxwell symmetry in superconductive fluctuations regime
Creators: name: Ummarino, Giovanni Alberto
name: Gallerati, Antonio
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the behaviour of a superconductor in a weak static gravitational field for temperatures slightly greater than its transition temperature (fluctuation regime). Making use of the time-dependent Ginzburg-Landau equations, we find a possible short time alteration of the static gravitational field in the vicinity of the superconductor, providing also a qualitative behaviour in the weak field condition. Finally, we compare the behaviour of various superconducting materials, investigating which parameters could enhance the gravitational field alteration.
description: 14 pages, 3 figures
The diagnostic performance of CA125 for the detection of ovarian and non-ovarian cancer in primary care: A population-based cohort study
Creators: name: Funston, Garth
name: Hamilton, Willie
name: Abel, Gary
name: Crosbie, Emma J.
name: Rous, Brian
name: Walter, Fiona M.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Research Article
Medicine and health sciences

description: Background: The serum biomarker cancer antigen 125 (CA125) is widely used as an investigation for possible ovarian cancer in symptomatic women presenting to primary care. However, its diagnostic performance in this setting is unknown. We evaluated the performance of CA125 in primary care for the detection of ovarian and non-ovarian cancers. Methods and findings: We studied women in the United Kingdom Clinical Practice Research Datalink with a CA125 test performed between 1 May 2011–31 December 2014. Ovarian and non-ovarian cancers diagnosed in the year following CA125 testing were identified from the cancer registry. Women were categorized by age: <50 years and ≥50 years. Conventional measures of test diagnostic accuracy, including sensitivity, specificity, and positive predictive value, were calculated for the standard CA125 cut-off (≥35 U/ml). The probability of a woman having cancer at each CA125 level between 1–1,000 U/ml was estimated using logistic regression. Cancer probability was also estimated on the basis of CA125 level and age in years using logistic regression. We identified CA125 levels equating to a 3% estimated cancer probability: the “risk threshold” at which the UK National Institute for Health and Care Excellence advocates urgent specialist cancer investigation. A total of 50,780 women underwent CA125 testing; 456 (0.9%) were diagnosed with ovarian cancer and 1,321 (2.6%) with non-ovarian cancer. Of women with a CA125 level ≥35 U/ml, 3.4% aged <50 years and 15.2% aged ≥50 years had ovarian cancer. Of women with a CA125 level ≥35 U/ml who were aged ≥50 years and who did not have ovarian cancer, 20.4% were diagnosed with a non-ovarian cancer. A CA125 value of 53 U/ml equated to a 3% probability of ovarian cancer overall. This varied by age, with a value of 104 U/ml in 40-year-old women and 32 U/ml in 70-year-old women equating to a 3% probability. The main limitations of our study were that we were unable to determine why CA125 tests were performed and that our findings are based solely on UK primary care data, so caution is need in extrapolating them to other healthcare settings. Conclusions: CA125 is a useful test for ovarian cancer detection in primary care, particularly in women ≥50 years old. Clinicians should also consider non-ovarian cancers in women with high CA125 levels, especially if ovarian cancer has been excluded, in order to prevent diagnostic delay. Our results enable clinicians and patients to determine the estimated probability of ovarian cancer and all cancers at any CA125 level and age, which can be used to guide individual decisions on the need for further investigation or referral.
MOESM11 of Epigenetic silencing of MEIS2 in prostate cancer recurrence
Creators: name: Nørgaard, Maibritt
name: Haldrup, Christa
name: Bjerre, Marianne
name: Høyer, Søren
name: Ulhøi, Benedicte
name: Borre, Michael
name: Sørensen, Karina
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology

description: Additional file 11: Table S7. Uni- and multivariate cox regression of MEIS2 assay 2 in the qMSP cohort using BCR as end-point (n=195 patients). Meth.: Methylation. Path.: Pathologic. HR: Hazard ratio. CI: Confidence interval.
Optical Coherence Tomography Angiography Reveals Distinct Retinal Structural and Microvascular Abnormalities in Cerebrovascular Disease
Creators: name: Zhang, Xiayin
name: Xiao, Hui
name: Liu, Chunxin
name: Liu, Sanxin
name: Zhao, Lanqin
name: Wang, Ruixin
name: Wang, Jinghui
name: Wang, Ting
name: Zhu, Yi
name: Chen, Chuan
name: Wu, Xiaohang
name: Lin, Duoru
name: Qiu, Wei
name: Yu-Wai-Man, Patrick
name: Lu, Zhengqi
name: Lin, Haotian
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Neuroscience
cerebrovascular disease
optical coherence tomography angiography
retinal vascular density
retinal structure
retinal microvasculature

description: Cerebrovascular disease (CeVD) is one of the leading global causes of death and severe disability. To date, retinal microangiopathy has become a reflection of cerebral microangiopathy, mirroring the vascular pathological modifications in vivo. To evaluate the retinal structure and microvasculature in patients with CeVD, we conducted a cross-sectional study in Zhongshan Ophthalmic Center and Department of Neurology of Third Affiliated Hospital, Sun Yat-sen University using optical coherence tomography angiography (OCTA). CeVD patients (n = 121; 238 eyes) and healthy controls (n = 44; 57 eyes) were included in the analysis. The CeVD group showed significant thinning of the peripapillary retinal nerve fiber layer (pRNFL) thickness in the temporal and nasal quadrants, and thinning of the macular ganglion cell-inner plexiform layer (GC-IPL) in the inferior quadrant, while macular microvasculature reduction was prominent in all nine quadrants. There were significant correlations between OCTA parameters, visual acuity, and transcranial doppler parameters in the CeVD group. The specific structural parameters combining microvasculature indices showed the best diagnostic accuracies (AUC = 0.918) to discriminate CeVD group from healthy controls. To conclude, we proved that OCTA reveals specific patterns of retinal structural changes and extensive macular microvascular changes in CeVD. Additionally, these retinal abnormalities could prove useful disease biomarkers in the management of individuals at high risk of debilitating complications from a cerebrovascular event.
Optimal work extraction and mutual information in a generalized Szilárd engine
Creators: name: Song, Juyong
name: Still, Susanne
name: Rojas, Rafael Díaz Hernández
name: Castillo, Isaac Pérez
name: Marsili, Matteo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A 1929 Gedankenexperiment proposed by Szilárd, often referred to as "Szilárd's engine", has served as a foundation for computing fundamental thermodynamic bounds to information processing. While Szilárd's original box could be partitioned into two halves and contains one gas molecule, we calculate here the maximal average work that can be extracted in a system with $N$ particles and $q$ partitions, given an observer which counts the molecules in each partition, and given a work extraction mechanism that is limited to pressure equalization. We find that the average extracted work is proportional to the mutual information between the one-particle position and the vector containing the counts of how many particles are in each partition. We optimize this quantity over the initial locations of the dividing walls, and find that there exists a critical number of particles $N^{\star}(q)$ below which the extracted work is maximized by a symmetric configuration of the $q$ partitions, and above which the optimal partitioning is asymmetric. Overall, the average extracted work is maximized for a number of particles $\hat{N}(q)
description: Updated with published version
The quantized Hall effect in the presence of resistance fluctuations
Creators: name: Peled, E.
name: Shahar, D.
name: Chen, Y.
name: Sivco, D. L.
name: Cho, A. Y.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present an experimental study of mesoscopic, two-dimensional electronic systems at high magnetic fields. Our samples, prepared from a low-mobility InGaAs/InAlAs wafer, exhibit reproducible, sample specific, resistance fluctuations. Focusing on the lowest Landau level we find that, while the diagonal resistivity displays strong fluctuations, the Hall resistivity is free of fluctuations and remains quantized at its $ν=1$ value, $h/e^{2}$. This is true also in the insulating phase that terminates the quantum Hall series. These results extend the validity of the semicircle law of conductivity in the quantum Hall effect to the mesoscopic regime.
description: Includes more data, changed discussion
Constraints from $T_c$ and the isotope effect for MgB$_2$
Creators: name: Knigavko, A.
name: Marsiglio, F.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: With the constraint that $T_c = 39$ K, as observed for MgB$_2$, we use the Eliashberg equations to compute possible allowed values of the isotope coefficient, $β$. We find that while the observed value $β= 0.32$ can be obtained in principle, it is difficult to reconcile a recently calculated spectral function with such a low observed value.
Quasi inversion of qubit channels
Creators: name: Karimipour, Vahid
name: Benatti, Fabio
name: Floreanini, Roberto
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Quantum operations, or quantum channels cannot be inverted in general. An arbitrary state passing through a quantum channel looses its fidelity with the input. Given a quantum channel ${\cal E}$, we introduce the concept of its quasi-inverse as a map ${\cal E}^{qi}$ which when composed with ${\cal E}$ increases its average input-output fidelity in an optimal way. The channel ${\cal E}^{qi}$ comes as close as possible to the inverse of a quantum channel. We give a complete classification of such maps for qubit channels and provide quite a few illustrative examples.
description: 4+5 pages, 4 figures, a few corrections in arguments and improvements in presentation
Series Representation of Jointly S$α$S Distribution via Symmetric Covariations
Creators: name: Ding, Yujia
name: Peng, Qidi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistics Theory (math.ST)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60E07, 60E10, 62E17

description: We introduce the notion of symmetric covariation, which is a new measure of dependence between two components of a symmetric $α$-stable random vector, where the stability parameter $α$ measures the heavy-tailedness of its distribution. Unlike covariation that exists only when $α\in(1,2]$, symmetric covariation is well defined for all $α\in(0,2]$. We show that symmetric covariation can be defined using the proposed generalized fractional derivative, which has broader usages than those involved in this work. Several properties of symmetric covariation have been derived. These are either similar to or more general than those of the covariance functions in the Gaussian case. The main contribution of this framework is the representation of the characteristic function of bivariate symmetric $α$-stable distribution via convergent series based on a sequence of symmetric covariations. This series representation extends the one of bivariate Gaussian.
Benchmarking quantum computers for real-time evolution of a $(1+1)$ field theory with error mitigation
Creators: name: Gustafson, Erik
name: Dreher, Patrick
name: Hang, Zheyue
name: Meurice, Yannick
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computers open the possibility of performing real-time calculations for quantum field theory scattering processes. We propose to use an index averaging the absolute value of the difference between the accurately calculated Trotter evolution of site occupations and their actual measurements on NISQ machines. The average is over all the qubits for a certain number of Trotter steps. We use this metric to quantify the progress made in successive state-of-the-art machines and error-mitigation techniques. We illustrate the concept with the transverse Ising model in one spatial dimension with four sites using three of IBM's quantum computers (Almaden, Boeblingen, and Melbourne). We discuss the size of the Trotter steps needed to achieve physics goals. Using the proposed metric, we show that readout mitigation methods and Richardson extrapolations of mitigated measurements are very effective for specific numbers of Trotter steps of a chosen size. This specific choice can be applied to other machines and noise mitigation methods. On the other hand, a reliable algorithmic mitigation would require a significantly larger number of smaller Trotter steps.
description: 16 pages, 11 figures, 10 table; updated data and revised conclusions from version 3
On the performance of different synchronization measures in real data: a case study on EEG signals
Creators: name: Quiroga, R. Quian
name: Kraskov, A.
name: Kreuz, T.
name: Grassberger, P.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biological Physics (physics.bio-ph)
subject: Computational Physics (physics.comp-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: We study the synchronization between left and right hemisphere rat EEG channels by using various synchronization measures, namely non-linear interdependences, phase-synchronizations, mutual information, cross-correlation and the coherence function. In passing we show a close relation between two recently proposed phase synchronization measures and we extend the definition of one of them. In three typical examples we observe that except mutual information, all these measures give a useful quantification that is hard to be guessed beforehand from the raw data. Despite their differences, results are qualitatively the same. Therefore, we claim that the applied measures are valuable for the study of synchronization in real data. Moreover, in the particular case of EEG signals their use as complementary variables could be of clinical relevance.
description: 32 pages, 1 table, 8 figures
Gravastar model in Randall-Sundrum braneworld
Creators: name: Arbañil, José D V
name: Moraes, Pedro H R S
name: Malheiro, Manuel
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we derive a gravastar model in Randall-Sundrum II braneworld scenario. Gravastars (or gravitationally vacuum stars) were proposed by Mazur and Mottola as systems of gravitational collapse alternative to black holes. The external region of the gravastar is described by a Schwarzschild space-time, while its internal region is filled by dark energy. In between there is a thin shell surface with ultrarelativistic matter (sometimes referred to as stiff matter). We obtain solutions for some physical quantities of the braneworld gravastars. Those are compared to original Mazur-Mottola results as well as with some gravastar solutions in alternative gravity theories. The consequences of the braneworld setup in gravastar physics is deeply discussed.
description: 12 pages
A Study of Time-Dependent CP-Violating Asymmetries and Flavor Oscillations in Neutral B Decays at the Upsilon(4S)
Creators: name: Aubert, B.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a measurement of time-dependent CP-violating asymmetries in neutral B meson decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at the Stanford Linear Accelerator Center. The data sample consists of 29.7 ${\rm fb}^{-1}$ recorded at the $Υ(4S)$ resonance and 3.9 ${\rm fb}^{-1}$ off-resonance. One of the neutral B mesons, which are produced in pairs at the $Υ(4S)$, is fully reconstructed in the CP decay modes $J/ψK^0_S$, $ψ(2S) K^0_S$, $χ_{c1} K^0_S$, $J/ψK^{*0}$ ($K^{*0}\to K^0_Sπ^0$) and $J/ψK^0_L$, or in flavor-eigenstate modes involving $D^{(*)}π/ρ/a_1$ and $J/ψK^{*0}$ ($K^{*0}\to K^+π^-$). The flavor of the other neutral B meson is tagged at the time of its decay, mainly with the charge of identified leptons and kaons. The proper time elapsed between the decays is determined by measuring the distance between the decay vertices. A maximum-likelihood fit to this flavor eigenstate sample finds $Δm_d = 0.516\pm 0.016 {\rm (stat)} \pm 0.010 {\rm (syst)} {\rm ps}^{-1}$. The value of the asymmetry amplitude $\sin2β$ is determined from a simultaneous maximum-likelihood fit to the time-difference distribution of the flavor-eigenstate sample and about 642 tagged $B^0$ decays in the CP-eigenstate modes. We find $\sin2β=0.59\pm 0.14 {\rm (stat)} \pm 0.05 {\rm (syst)}$, demonstrating that CP violation exists in the neutral B meson system. (abridged)
description: 58 pages, 35 figures, submitted to Physical Review D
Changing Farming Practices Accompany Major Shifts in Farm Structure
Creators: name: O'Donoghue, Erik J.
name: MacDonald, James C.
name: Vasavada, Utpal
name: Sullivan, Patrick
name: O'Donoghue, Erik J.
name: MacDonald, James C.
name: Vasavada, Utpal
name: Sullivan, Patrick
Publisher: name: Unknown
Year: 2011
Subjects: Farm Management

description: Over the past three decades, the number of farming operations has remained relatively steady, but production has shifted to larger farms. Changes in production and marketing practices have facilitated—and have been facilitated by—organizational and distributional changes in agricultural production. Resulting changes in agricultural productivity helped keep prices for agricultural goods relatively low and reduced the environmental footprint for each unit of agricultural output produced, but not without tradeoffs.
MOESM10 of Epigenetic silencing of MEIS2 in prostate cancer recurrence
Creators: name: Nørgaard, Maibritt
name: Haldrup, Christa
name: Bjerre, Marianne
name: Høyer, Søren
name: Ulhøi, Benedicte
name: Borre, Michael
name: Sørensen, Karina
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology

description: Additional file 10: Table S6. Uni- and multivariate cox regression of MEIS2 assay 1 in the qMSP cohort using BCR as end-point (n=195 patients). Meth.: Methylation. Path.: Pathologic. HR: Hazard ratio. CI: Confidence interval.
Labor_Physician_BR_Complement
Creators: name: Concha-Amin, Monica
name: Trindade, Carolina Sturm
name: Zen, Paulo Gazolla
name: Giergowicz, Bruna Bastos
Publisher: name: figshare
Year: 2021
Subjects: subject: 140211 Labour Economics
subject: FOS: Economics and business

description: Complementary text of article about labor market for physician, 2014 -2018.
Z2 characterization for three-dimensional multiband Hubbard models
Creators: name: Irsigler, Bernhard
name: Zheng, Jun-Hui
name: Grusdt, Fabian
name: Hofstetter, Walter
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce three numerical methods for characterizing the topological phases of three-dimensional multiband Hubbard models based on twisted boundary conditions, Wilson loops, as well as the local topological marker. We focus on the half-filled, three-dimensional time-reversal-invariant Hofstadter model with finite spin-orbit coupling. Besides the weak and strong topological insulator phases we find a nodal line semimetal in the parameter regime between the two three-dimensional topological insulator phases. Using dynamical mean-field theory combined with the topological Hamiltonian approach we find stabilization of these three-dimensional topological states due to the Hubbard interaction. We study surface states which exhibit an asymmetry between left and right surface originating from the broken parity symmetry of the system. Our results set the stage for further research on inhomogeneous three-dimensional topological systems, proximity effects, topological Mott insulators, non-trivially linked nodal line semimetals and circuit-based quantum simulators.
description: 8 pages, 6 figures, last version contains corrected figures from erratum, see journal references
U.S. Food Safety Policy Enters a New Era
Creators: name: Hoffmann, Sandra A.
name: Hoffmann, Sandra A.
Publisher: name: Unknown
Year: 2011
Subjects: Food Consumption/Nutrition/Food Safety

description: In late 2010, Congress passed the Food Safety Modernization Act (FSMA), the most comprehensive reforms to Federal food safety laws since 1938. The farm-to-fork, preventive approach embodied in the Act reflects an established scientific/managerial consensus on how to improve food safety systems. Economic research on similar food safety initiatives by industry and government can help guide implementation of the FSMA.
The Curvaton Hypothesis and the eta-problem of Quintessential Inflation, with and without Branes
Creators: name: Dimopoulos, Konstantinos
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is argued why, contrary to expectations, steep brane-inflation cannot really help in overcoming the eta-problem of quintessential inflation model-building. In contrast it is shown that the problem is substantially ameliorated under the curvaton hypothesis. This is quantified by considering possible modular quintessential inflationary models in the context of both standard and brane cosmology.
description: 39 pages, Latex, 5 figures
Tanaellidae Larsen & Wilson 2002
Creators: name: BIRD, GRAHAM J.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Tanaidacea
Tanaellidae

description: Family Tanaellidae Larsen & Wilson, 2002   Remarks. This establishment of this family was an outcome of the first major analysis of the phylogenetics of the Paratanaoidea (Larsen & Wilson 2002). Although relatively restricted in known genera (Araphura Bird & Holdich, 1984; Araphuroides Sieg, 1986; Arthrura Kudinova-Pasternak; and Tanaella Norman & Stebbing) it is well represented by many species, particularly of Araphura and Tanaella, in the deep sea. Several species from bathyal New Zealand waters remain to be described.
description: Published as part of BIRD, GRAHAM J., 2011, Paratanaoidean tanaidaceans (Crustacea: Peracarida) from littoral and shallow sublittoral habitats in New Zealand, with descriptions of three new genera and seven new species, pp. 1-62 in Zootaxa 2891 (1) on page 41, DOI: 10.11646/zootaxa.2891.1.1, http://zenodo.org/record/10095598
Time-resolved ferromagnetic resonance in epitaxial Fe1-xCox films
Creators: name: Engebretson, D. M.
name: Zellinger, S.
name: Chen, L. C.
name: Palmstrom, C. J.
name: Crowell, P. A.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetodynamics in epitaxial Fe1-xCox films on GaAs (100) are studied using time-resolved ferromagnetic resonance, in which the free precession of the magnetization after an impulsive excitation is measured using the polar Kerr effect. The sample is rotated with respect to the static and pulsed field directions, providing a complete mapping of the free energy surface and characteristic relaxation times. The magnetic response can be simulated with a simple coherent rotation model except in the immediate vicinity of switching fields. Bulk and surface anisotropies are identified, and unusual dynamics associated with the coexistence of cubic and uniaxial anisotropies are observed.
description: PDF - 4 figures
Local Foods Marketing Channels Encompass a Wide Range of Producers
Creators: name: Low, Sarah A.
name: Vogel, Stephen J.
name: Low, Sarah A.
name: Vogel, Stephen J.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Marketing
subject: FOS: Economics and business

description: Farmers selling locally grown food through farmers’ markets, roadside stands, and other local food outlets account for a small, but growing, segment of U.S. agriculture. Consumer demand for locally produced food is driven by demand for freshness, support for the local economy, and personal communication with the producer (see “Varied Interests Drive Growing Popularity of Local Foods” in the December 2010 issue of Amber Waves).
Design of Adiabatic Logic for a Quantum CNOT Gate
Creators: name: Corato, V.
name: Silvestrini, P.
name: Stodolsky, L.
name: Wosiek, J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Condensed Matter (cond-mat)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine the realization of a quantum CNOT gate by adiabatic operations.The principles of such systems and their analysis are briefly discussed and a model consisting of two weakly coupled double- potential well qubits is studied numerically. Regions of the parameter space with suitable well-defined sets of wavefunctions are found, in which then an adiabatic sweep of an external bias produces the switching behavior of CNOT. Results are presented on the adiabatic condition and the identification with the parameters of a flux-coupled two-SQUID system is given.For typical parameters adiabatic times in the nanosecond regime are obtained.
description: Simplified and clarified version, new material on adiabatic condition. Four pages, three figures
Feature, "The NAFTA Countries Build on Free Trade"
Creators: name: Zahniser, Steven
name: Zahniser, Steven
Publisher: name: Unknown
Year: 2011
Subjects: International Relations/Trade

description: Free trade is deeply rooted within North America’s agricultural economy. Canada, Mexico, and the United States gradually removed thousands of barriers to regional agricultural trade from 1994 to 2008 as part of the North American Free Trade Agreement (NAFTA). From 1989 to 1993, Canada and the United States pursued agricultural trade liberalization through the Canada-U.S. Free Trade Agreement (CUSTA), which was then folded into NAFTA. Mexico also implemented a number of unilateral agricultural trade reforms in the early 1990s. When these initiatives are considered together, the NAFTA countries have completed a remarkable two decades of agricultural trade liberalization.
RHESSI as a Hard X-Ray Polarimeter
Creators: name: McConnell, M. L.
name: Ryan, J. M.
name: Smith, D. M.
name: Lin, R. P.
name: Emslie, A. G.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Polarization measurements of hard X-rays from solar flares can provide a direct handle on the extent to which the accelerated electrons are beamed, which, in turn, has important implications for particle acceleration models. Past efforts to measured X-ray polarization have met with only limited success. Although designed primarily as a hard X-ray imager and spectrometer, the Ramaty High Energy Solar Spectroscopic Imager (RHESSI) is also capable of measuring the polarization of hard X-rays (20-100 keV) from solar flares. This capability arises from the inclusion of a small unobstructed Be scattering element that is strategically located within the cryostat that houses the array of nine germanium detectors. The Ge detectors are segmented, with both a front and rear active volume. Low energy photons (below about 100 keV) can reach a rear segment of a Ge detector only indirectly, by scattering. Low energy photons from the Sun have a direct path to the Be and have a high probability of Compton scattering into a rear segment of a Ge detector. The azimuthal distribution of these scattered photons carries with it a signature of the linear polarization of the incident flux. Sensitivity estimates, based on Monte Carlo simulations and in-flight background measurements, indicate that a 20-100 keV polarization sensitivity of less than a few percent can be achieved for X-class flares.
description: 20 pages, including 12 figures. To appear in Solar Physics
Dust properties of the dark cloud IC5146 - Submillimeter and NIR imaging
Creators: name: Kramer, C.
name: Richer, J.
name: Mookerjea, B.
name: Alves, J.
name: Lada, C.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a submillimeter dust continuum study of a molecular ridge in IC5146 carried out at 850micron and 450micron with SCUBA on the James Clerk Maxwell Telescope (JCMT). The mapped region is 14'x2.5' in size (2pc x 0.3pc) and consists of at least four dense cores which are likely to be prestellar in nature. To study the dust properties of the ridge and its embedded cores, we combined the dust emission data with dust extinction data obtained by Lada et al. (1999) from the NIR colors of background giant stars. The ridge shows dust extinctions above ~10mag, rising up to 35mag in the cores. A map of dust temperatures, constructed from the continuum flux ratios, shows significant temperature gradients: we find temperatures of up to ~20K in the outskirts and between the cores, and down to ~10K in the cores themselves. The cores themselves are almost isothermal. We used the extinction data to derive in addition a map of the dust emissivity. Its average value agrees well with the canonical value of Mathis (1990). We find that the dust emissivity parametrized by kappa_850/kappa_V increases by a factor of about 4 when the dust temperature decreases from ~20K to ~12K. A Monte Carlo simulation shows that this change is significant with regard to the estimated calibration uncertainties. This is consistent with models of dust evolution in prestellar cores by Ossenkopf & Henning (1994) and with the previous detection of gas-phase depletion of CO in one of the IC5146 cores by Kramer et al. 1999.
description: (11 pages, 5 figures (7 eps files), accepted by Astronommy & Astrophysics)
INDONESIAN EFL TEACHERS' AND STUDENTS' PERSPECTIVES OF COLLABORATIVE WRITING: A MIXED-METHOD APPROACH IN HIGHER EDUCATION
Creators: name: Ikariya Sugesti
name: Dwi Rukmini
name: Abdurrachman Faridi
name: Sri Wuli Fitriati
Publisher: name: Zenodo
Year: 2024
Subjects: Collaborative Writing, Higher Education, EFL Writing, Mixed-Method Approach.

description: Abstract

Numerous investigations have previously examined the effects of collaborative writing on students' writing performance from the student perspective. However, few studies have undertaken a comprehensive exploration that encompasses both qualitative and quantitative insights, encompassing both teachers and students. In response to this gap, the present study adopts a sequential mixed-methods approach, employing thematic narrative analysis. The study engaged three experienced EFL writing teachers and thirty students from a private university in West Java, Indonesia. Data collection methods included interviews with teachers and questionnaires for students. The research outcomes revealed that the EFL teachers skillfully integrated face-to-face collaborative writing into the process-genre approach to text development. Both teachers and students attested to the substantial benefits of collaborative writing for writing and language skill improvement, enriching the learning process, and enhancing social and affective aspects of education. Despite the positive outcomes, the study also uncovered challenges associated with collaborative writing, including group formation and individual preferences, which occasionally hindered the collaborative process. In addition, the quantitative analysis unveiled a noteworthy correlation between students' positive perceptions of collaborative writing and improved writing performance. This finding underscores the significance of cultivating favorable perceptions of collaborative writing to enhance students' writing abilities. Top of Form
River Sharing and Water Trade
Creators: name: Ansink, Erik
name: Gengenbach, Michael
name: Weikard, Hans-Peter
name: Ansink, Erik
name: Gengenbach, Michael
name: Weikard, Hans-Peter
Publisher: name: Unknown
Year: 2012
Subjects: subject: Environmental Economics and Policy
subject: River Sharing
subject: Water Trade
subject: Market Emergence
subject: Property Rights
subject: Coalition Stability

description: We analyse river sharing games in which a set of agents located along a river shares the available water. Using coalition theory, we find that the potential benefits of water trade may not be sufficient to make all agents in the river cooperate and acknowledge property rights as a prerequisite for trade. Specifically, a complete market for river water may not emerge if there are four or more agents along the river. Instead, a partial market may emerge where a subset of agents trades river water, with the possibility that other agents take some of the river water that passes their territory.
Asymptotic Giant Branch Stars in the Nearby Dwarf Galaxy Leo P
Creators: name: Goldman, Steven R.
name: Boyer, Martha L.
name: McQuinn, Kristen B.
name: Sloan, Greg C.
name: McDonald, Iain
name: van Loon, Jacco Th.
name: Zijlstra, Albert A.
name: Hirschauer, Alec S.
name: Skillman, Evan D.
name: Srinivasan, Sundar
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have conducted a highly sensitive census of the evolved-star population in the metal-poor dwarf galaxy Leo P and detected four asymptotic giant branch (AGB) star candidates. Leo P is one of the best examples of a nearby analog of high-redshift galaxies because of its primitive metal content (2% of the solar value), proximity, and isolated nature, ensuring a less complicated history. Using medium-band optical photometry from the Hubble Space Telescope (HST), we have classified the AGB candidates by their chemical type. We have identified one oxygen-rich source which appears to be dusty in both the HST and Spitzer observations. Its brightness, however, suggests it may be a planetary nebula or post-AGB object. We have also identified three carbon-rich candidates, one of which may be dusty. Follow-up observations are needed to confirm the nature of these sources and to study the composition of any dust that they produce. If dust is confirmed, these stars would likely be among the most metal-poor examples of dust-producing stars known and will provide valuable insight into our understanding of dust formation at high redshift.
description: Accepted for publication in ApJ
Daedalma dinias Hewitson
Creators: name: Pyrcz, Tomasz W.
name: Greeney, Harold F.
name: Willmott, Keith R.
name: Wojtusiak, Janusz
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Nymphalidae
Daedalma
Daedalma dinias

description: Daedalma dinias Hewitson
 Daedalma dinias Hewitson [1858]: [85], pl. 1[43], figs. 1–3.
 Remarks: This is a polymorphic species occurring in all three Colombian Cordilleras and on the eastern slopes of the Andes in Ecuador. Its subspecies can be recognised immediately by the size, shape and ventral expression of the FW orange patch. It is generally parapatric above the similarly marked D. fraudata and D. rubroreducta n. ssp. in eastern Ecuador, from which it is recognised by the fact that the FW orange patch never extends into the postdiscal area (cell M2-M3).
description: Published as part of Pyrcz, Tomasz W., Greeney, Harold F., Willmott, Keith R. & Wojtusiak, Janusz, 2011, 2898, pp. 1-68 in Zootaxa 2898 on page 9
Screened-interaction expansion for the Hubbard model and determination of the quantum Monte Carlo Fermi surface
Creators: name: Esirgen, G.
name: Schuttler, H. -B.
name: Grober, C.
name: Evertz, H. G.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We develop a systematic self-consistent perturbative expansion for the self energy of Hubbard-like models. The interaction lines in the Feynman diagrams are dynamically screened by the charge fluctuations in the system. Although the formal expansion is exact-assuming that the model under the study is perturbative-only if diagrams to all orders are included, it is shown that for large-on-site-Coulomb-repulsion-U systems weak-coupling expansions to a few orders may already converge. We show that the screened interaction for the large-U system can be vanishingly small at a certain intermediate electron filling; and it is found that our approximation for the imaginary part of the one-particle self energy agrees well with the QMC results in the low energy scales at this particular filling. But, the usefulness of the approximation is hindered by the fact that it has the incorrect filling dependence when the filling deviates from this value. We also calculate the exact QMC Fermi surfaces for the two-dimensional (2-D) Hubbard model for several fillings. Our results near half filling show extreme violation of the concepts of the band theory; in fact, instead of growing, Fermi surface vanishes when doped toward the half-filled Mott-Hubbard insulator. Sufficiently away from half filling, noninteracting-like Fermi surfaces are recovered. These results combined with the Luttinger theorem might show that diagrammatic expansions for the nearly-half-filled Hubbard model are unlikely to be possible; however, the nonperturbative part of the solution seems to be less important as the filling gradually moves away from one half. Results for the 2-D one-band Hubbard model for several hole dopings are presented. Implications of this study for the high-temperature superconductors are also discussed.
description: 11 pages, 12 eps figures embedded, REVTeX, submitted to Phys. Rev. B; (v2) minor revisions, scheduled for publication on November 15
Domain Wall Depinning in Random Media by AC Fields
Creators: name: Glatz, A.
name: Nattermann, T.
name: Pokrovsky, V.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The viscous motion of an interface driven by an ac external field of frequency omega_0 in a random medium is considered here for the first time. The velocity exhibits a smeared depinning transition showing a double hysteresis which is absent in the adiabatic case omega_0 --> 0. Using scaling arguments and an approximate renormalization group calculation we explain the main characteristics of the hysteresis loop. In the low frequency limit these can be expressed in terms of the depinning threshold and the critical exponents of the adiabatic case.
description: 4 pages, 3 figures
MOESM1 of Attitude of physiotherapists toward electronic health record in Croatia
Creators: name: Filipec, Manuela
name: Brumini, Gordana
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer

description: Additional file 1. The questionnaire "Atttitude of physiotherapists toward implementation of electronic health record.
A Predictive On-Demand Placement of UAV Base Stations Using Echo State Network
Creators: name: Peng, Haoran
name: Chen, Chao
name: Lai, Chuan-Chi
name: Wang, Li-Chun
name: Han, Zhu
Publisher: name: arXiv
Year: 2019
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The unmanned aerial vehicles base stations (UAV-BSs) have great potential in being widely used in many dynamic application scenarios. In those scenarios, the movements of served user equipments (UEs) are inevitable, so the UAV-BSs needs to be re-positioned dynamically for providing seamless services. In this paper, we propose a system framework consisting of UEs clustering, UAV-BS placement, UEs trajectories prediction, and UAV-BS reposition matching scheme, to serve the UEs seamlessly as well as minimize the energy cost of UAV-BSs' reposition trajectories. An Echo State Network (ESN) based algorithm for predicting the future trajectories of UEs and a Kuhn-Munkres-based algorithm for finding the energy-efficient reposition trajectories of UAV-BSs is designed, respectively. We conduct a simulation using a real open dataset for performance validation. The simulation results indicate that the proposed framework achieves high prediction accuracy and provides the energy-efficient matching scheme.
description: 6 pages, 8 figures, accepted by 2019 IEEE/CIC International Conference on Communications in China (ICCC)
HoughNet: neural network architecture for vanishing points detection
Creators: name: Sheshkus, Alexander
name: Ingacheva, Anastasia
name: Arlazarov, Vladimir
name: Nikolaev, Dmitry
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this paper we introduce a novel neural network architecture based on Fast Hough Transform layer. The layer of this type allows our neural network to accumulate features from linear areas across the entire image instead of local areas. We demonstrate its potential by solving the problem of vanishing points detection in the images of documents. Such problem occurs when dealing with camera shots of the documents in uncontrolled conditions. In this case, the document image can suffer several specific distortions including projective transform. To train our model, we use MIDV-500 dataset and provide testing results. The strong generalization ability of the suggested method is proven with its applying to a completely different ICDAR 2011 dewarping contest. In previously published papers considering these dataset authors measured the quality of vanishing point detection by counting correctly recognized words with open OCR engine Tesseract. To compare with them, we reproduce this experiment and show that our method outperforms the state-of-the-art result.
description: 6 pages, 6 figures, 2 tables, 28 references, conference
Searches for neutral Higgs bosons in e+e- collisions from sqrt(s) = 191.6 to 201.7 GeV
Creators: name: The DELPHI Collaboration
name: Abdallah, J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Neutral Higgs bosons of the Standard Model (SM) and the Minimal Supersymmetric Standard Model (MSSM) were searched for in the data collected in 1999 by the DELPHI experiment at centre-of-mass energies between 191.6 and 201.7 GeV with a total integrated luminosity of 228 pb^{-1}. These analyses, in combination with our results at lower energies, set 95% confidence level lower mass bounds on the Standard Model Higgs boson (107.3 GeV/c^2) and on the lightest neutral scalar (85.9 GeV/c^2) and neutral pseudoscalar (86.5 GeV/c^2) Higgs bosons in representative scans of the MSSM parameter space. An extended scan of the MSSM parameter space was also performed to test the robustness of these limits.
description: 49 pages, 19 figures, Accepted by Eur. Phys. J. C
Overview of Crosstalk Between Multiple Factor of Transcytosis in Blood Brain Barrier
Creators: name: Tjakra, Marco
name: Wang, Yeqi
name: Vania, Vicki
name: Hou, Zhengjun
name: Durkan, Colm
name: Wang, Nan
name: Wang, Guixue
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Neuroscience
blood brain barrier
transcytosis
developmental
mechanical stress
cytokines
miRNA
physicochemical
tight junctions

description: Blood brain barrier (BBB) conserves unique regulatory system to maintain barrier tightness while allowing adequate transport between neurovascular units. This mechanism possess a challenge for drug delivery, while abnormality may result in pathogenesis. Communication between vascular and neural system is mediated through paracellular and transcellular (transcytosis) pathway. Transcytosis itself showed dependency with various components, focusing on caveolae-mediated. Among several factors, intense communication between endothelial cells, pericytes, and astrocytes is the key for a normal development. Regulatory signaling pathway such as VEGF, Notch, S1P, PDGFβ, Ang/Tie, and TGF-β showed interaction with the transcytosis steps. Recent discoveries showed exploration of various factors which has been proven to interact with one of the process of transcytosis, either endocytosis, endosomal rearrangement, or exocytosis. As well as providing a hypothetical regulatory pathway between each factors, specifically miRNA, mechanical stress, various cytokines, physicochemical, basement membrane and junctions remodeling, and crosstalk between developmental regulatory pathways. Finally, various hypotheses and probable crosstalk between each factors will be expressed, to point out relevant research application (Drug therapy design and BBB-on-a-chip) and unexplored terrain.