cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Towards holographic flat bands
Creators: name: Grandi, Nicolás
name: Juričić, Vladimir
name: Landea, Ignacio Salazar
name: Soto-Garrido, Rodrigo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by the phenomenology in the condensed-matter flat-band Dirac systems, we here construct a holographic model that imprints the symmetry breaking pattern of a rather simple Dirac fermion model at zero chemical potential.In the bulk we explicitly include the backreaction to the corresponding Lifshitz geometry and compute the dynamical critical exponent. Most importantly, we find that such a geometry is unstable towards a nematic phase, exhibiting an anomalous Hall effect and featuring a Drude-like shift of its spectral weight. Our findings should motivate further studies of the quantum phases emerging from such holographic models.
description: 20 pages, 8 figures, v2: JHEP version
New Curvature Conditions for the Bochner Technique
Creators: name: Petersen, Peter
name: Wink, Matthias
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53B20, 53C20, 53C21, 53C23, 58A14

description: We prove a vanishing and estimation theorem for the $p^{\text{th}}$-Betti number of closed $n$-dimensional Riemannian manifolds with a lower bound on the average of the lowest $n-p$ eigenvalues of the curvature operator. This generalizes results due to D. Meyer, Gallot-Meyer, and Gallot. For example, in dimensions $n=5,6$ we obtain vanishing of the Betti numbers provided that the curvature operator is $3$-positive. As Böhm-Wilking observed, $3$-positivity of the curvature operator is not preserved by the Ricci flow.
description: An edited version to appear in Invent. Math. Corollary 3.3 and Proposition 3.5 to be published elsewhere
Learning suitable for hospital and learning suitable for home: differences in perception between postpartum mothers and maternal/newborn nurses
Creators: name: Dean, Susan K.
Publisher: name: University of British Columbia
Year: 2008

description: The trend toward early postpartum discharge programs means that much more of the postpartum teaching traditionally carried out in hospital will need to be conducted at home with visiting nurses. However, before any postpartum education changes could be recommended, it was necessary to investigate the perceptions of the two groups of people involved in early postpartum education; postpartum mothers and maternal/newborn nurses. The purpose of this study was to identify the postpartum learning needs that early discharge mothers and hospital based maternal/newborn nurses regarded as either more suitably addressed in hospital or more suitably addressed at home and to compare the perceptions of both groups. Therefore, a factor-searching and relation-searching approach was used to study convenience samples of 89 low risk, primiparous mothers eligible for early discharge and 50 nurses. Each participant completed a questionnaire which was developed for the study. Concerns and interests identified in the literature as important to mothers during the postpartum period were included. Topics were assigned to three categories; self, infant, and family. Each category contained an "other" option so that both groups would feel free to identify topics that were not present in the questionnaire. Results of the study suggested that postpartum mothers want learning needs related to their infants addressed first, followed by those related to self, and those related to family last. While mothers' and nurses' perceptions of topics suitable for hospital were similar, their perceptions of topics suitable for home differed. Mothers perceived most of the infant topics as more appropriate to discussion in hospital and most of the family topics as more appropriate to discussion in the home. Most of the nurses perceived only physical care/skill kinds of infant topics as appropriate to hospital and informational topics related to the infant as more appropriate to home. The study also indicated that both groups expected a large portion of postpartum learning to occur within a 48 hour hospital stay postpartum. The results have implications for nursing practice, education, administration, and research. Strategies aimed at meeting the learning needs of early discharge postpartum mothers more effectively are identified and described.
Multiplicative arithmetic functions and the generalized Ewens measure
Creators: name: Elboim, Dor
name: Gorodetsky, Ofir
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: Random integers, sampled uniformly from $[1,x]$, share similarities with random permutations, sampled uniformly from $S_n$. These similarities include the Erdős--Kac theorem on the distribution of the number of prime factors of a random integer, and Billingsley's theorem on the largest prime factors of a random integer. In this paper we extend this analogy to non-uniform distributions.
 Given a multiplicative function $α\colon \mathbb{N} \to \mathbb{R}_{\ge 0}$, one may associate with it a measure on the integers in $[1,x]$, where $n$ is sampled with probability proportional to the value $α(n)$. Analogously, given a sequence $\{ θ_i\}_{i \ge 1}$ of non-negative reals, one may associate with it a measure on $S_n$ that assigns to a permutation a probability proportional to a product of weights over the cycles of the permutation. This measure is known as the generalized Ewens measure.
 We study the case where the mean value of $α$ over primes tends to some positive $θ$, as well as the weights $α(p) \approx (\log p)^γ$. In both cases, we obtain results in the integer setting which are in agreement with those in the permutation setting.
description: 29 pages. Journal version
Gapless spin liquids in disguise
Creators: name: Ferrari, Francesco
name: Parola, Alberto
name: Becca, Federico
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that gapless spin liquids, which are potential candidates to describe the ground state of frustrated Heisenberg models in two dimensions, become trivial insulators on cylindrical geometries with an even number of legs. In particular, we report calculations for Gutzwiller-projected fermionic states on strips of square and kagome lattices. By choosing different boundary conditions for the fermionic degrees of freedom, both gapless and gapped states may be realized, the latter ones having a lower variational energy. The direct evaluation of static and dynamical correlation functions, as well as overlaps between different states, allows us to demonstrate the sharp difference between the ground-state properties obtained within cylinders or directly in the two-dimensional lattice. Our results shed light on the difficulty to detect bona fide gapless spin liquids in such cylindrical geometries.
description: 9 pages, 10 figures
Quantum Turbulence in a Trapped Bose-Einstein Condensate
Creators: name: Kobayashi, Michikazu
name: Tsubota, Makoto
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study quantum turbulence in trapped Bose-Einstein condensates by numerically solving the Gross-Pitaevskii equation. Combining rotations around two axes, we successfully induce quantum turbulent state in which quantized vortices are not crystallized but tangled. The obtained spectrum of the incompressible kinetic energy is consistent with the Kolmogorov law, the most important statistical law in turbulence.
description: 4 pages, 4 figures, Physical Review A 76, 045603 (2007)
Development of Large area Gamma-ray Camera with GSO(Ce) Scintillator Arrays and PSPMTs
Creators: name: Nishimura, H.
name: Hattori, K.
name: Kubo, H.
name: Tanimori, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have developed a position-sensitive scintillation camera with a large area absorber for use as an advanced Compton gamma-ray camera. At first we tested GSO(Ce) crystals. We compared light output from the GSO(Ce) crystals under various conditions: the method of surface polishing, the concentration of Ce, and co-doping Zr. As a result, we chose the GSO(Ce) crystals doped with only 0.5 mol% Ce, and its surface polished by chemical etching as the scintillator of our camera. We also made a 16$\times$16 cm$^2$ scintillation camera which consisted of 9 position-sensitive PMTs (PSPMTs Hamamatsu flat-panel H8500), the each of which had 8$\times$8 anodes with a pitch of 6 mm and coupled to 8$\times$8 arrays of pixelated 6$\times6\times$13 mm$^3$ GSO(Ce) scintillators. For the readout system of the 576 anodes of the PMTs, we used chained resistors to reduce the number of readout channels down to 48 to reduce power consumption. The camera has a position resolution of less than 6mm and a typical energy resolution of 10.5% (FWHM) at 662 keV at each pixel in a large area of 16$\times$16 cm$^2$. %to choose the best scintillator for our project. Furthermore we constructed a 16$\times$16 array of 3$\times3\times$13 mm$^3$ pixelated GSO(Ce) scintillators, and glued it to a PMT H8500. This camera had the position resolution of less than 3mm, over an area of 5$\times$5 cm$^2$, except for some of the edge pixels; the energy resolution was typically 13% (FWHM) at 662 keV.
description: Proceedings of PSD7 appear in NIMA
Pinenut Camp (B-roll)
Creators: name: Girado, Luther
name: Hammond, Jon
name: Hicks, Lucille
name: Turner, Julie
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: This recording contains a discussion of life in the camp on Paiute Mountain, as well as a specific recollection of a childhood activity of gathering pinenuts and other stories.
MOESM1 of Vancomycin-resistant enterococci (VRE) screening and isolation in the general medicine ward: a cost-effectiveness analysis
Creators: name: Mac, Stephen
name: Fitzpatrick, Tiffany
name: Johnstone, Jennie
name: Sander, Beate
Publisher: name: figshare
Year: 2019
Subjects: Medicine
Biotechnology
Biological Sciences not elsewhere classified
Science Policy

description: Additional file 1. CHEERS Checklist.
Possible Pressure-Induced Charge-Density Wave Quantum Critical Point in LuPd2In
Creators: name: Ajeesh, M. O.
name: Gruner, Thomas
name: Geibel, Christoph
name: Nicklas, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigated the effect of application of hydrostatic pressure on the charge-density wave (CDW) state in Lu(Pt$_{1-x}$Pd$_x$)$_2$In by electrical-resistivity measurements. In Lu(Pt$_{0.7}$Pd$_{0.3}$)$_{2}$In we find an increase of the CDW transition temperature upon application of pressure, which is not expected based on simple volume arguments, but in line with results of a theoretical work by Kim et al. [Phys. Rev. Lett. 125, 157001 (2020).]. Combining experimental and theoretical results suggests the existence of a CDW quantum critical point in stoichiometric LuPd$_2$In around $p\approx20$ GPa.
description: 2 figures
Universally Consistent K-Sample Tests via Dependence Measures
Creators: name: Panda, Sambit
name: Shen, Cencheng
name: Perry, Ronan
name: Zorn, Jelle
name: Lutz, Antoine
name: Priebe, Carey E.
name: Vogelstein, Joshua T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The K-sample testing problem involves determining whether K groups of data points are each drawn from the same distribution. Analysis of variance is arguably the most classical method to test mean differences, along with several recent methods to test distributional differences. In this paper, we demonstrate the existence of a transformation that allows K-sample testing to be carried out using any dependence measure. Consequently, universally consistent K-sample testing can be achieved using a universally consistent dependence measure, such as distance correlation and the Hilbert-Schmidt independence criterion. This enables a wide range of dependence measures to be easily applied to K-sample testing.
description: 6 pages main + 8 pages appendix
Search for pair production of doubly-charged Higgs bosons in the H^{++}H^{--}^ to mu^+mu^+mu^-mu^- final state at D0
Creators: name: D0 Collaboration
name: Abazov, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report the results of a search for pair production of doubly-charged Higgs bosons via ppbar to H^{++}H^{--}X to mu^+mu^+mu^-mu^-X at sqrt{s} = 1.96 TeV. We use a dataset corresponding to an integrated luminosity of 1.1 fb^{-1} collected from 2002 to 2006 by the D0 detector at the Fermilab Tevatron Collider. In the absence of an excess above the standard model background, lower mass limits of M(H^{pmpm}_L) > 150 GeV/c^2 and M(H^{pmpm}_R) > 127 GeV/c^2 at 95% C.L. are set, respectively, for left-handed and right-handed doubly-charged Higgs bosons assuming a 100% branching ratio into muons.
description: 7 pages, 2 figures, submitted to Phys. Rev. Lett
Estimation and Vanishing Results for Hodge numbers
Creators: name: Petersen, Peter
name: Wink, Matthias
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32Q10, 32Q15, 32Q20, 53C21, 53C55

description: We show that compact Kähler manifolds have the rational cohomology ring of complex projective space provided a weighted sum of the lowest three eigenvalues of the Kähler curvature operator is positive. This follows from a more general vanishing and estimation theorem for the individual Hodge numbers. We also prove an analogue of Tachibana's theorem for Kähler manifolds.
description: 22 pages, minor corrections
Mechanical properties of amorphous nanosprings
Creators: name: da Fonseca, Alexandre F.
name: Malta, C. P.
name: Galvao, D. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Helical amorphous nanosprings have attracted particular interest due to their special mechanical properties. In this work we present a simple model, within the framework of the Kirchhoff rod model, for investigating the structural properties of nanosprings having asymmetric cross section. We have derived expressions that can be used to obtain the Young's modulus and Poisson's ratio of the nanospring material composite. We also address the importance of the presence of a catalyst in the growth process of amorphous nanosprings in terms of the stability of helical rods.
description: 14 pages, 4 figures
Aquatic Nutrient Levels and Climate Change
Creators: name: Bosch, Elli
name: Faunce, Kaycee
name: Thompson, Amanda
Publisher: name: QUBES Educational Resources
Year: 2019

description: This learning module was designed to introduce students to the aquatic nutrients nitrogen and phosphorus, their roles in ecosystem function and nutrient pollution, and what impacts climate change might have on their presence and effects in aquatic systems
Thermalized buckling of isotropically compressed thin sheets
Creators: name: Shankar, Suraj
name: Nelson, David R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The buckling of thin elastic sheets is a classic mechanical instability that occurs over a wide range of scales. In the extreme limit of atomically thin membranes like graphene, thermal fluctuations can dramatically modify such mechanical instabilities. We investigate here the delicate interplay of boundary conditions, nonlinear mechanics and thermal fluctuations in controlling buckling of confined thin sheets under isotropic compression. We identify two inequivalent mechanical ensembles based on the boundaries at constant strain (isometric) or at constant stress (isotensional) conditions.Remarkably, in the isometric ensemble, boundary conditions induce a novel long-ranged nonlinear interaction between the local tilt of the surface at distant points. This interaction combined with a spontaneously generated thermal tension leads to a renormalization group description of two distinct universality classes for thermalized buckling, realizing a mechanical variant of Fisher-renormalized critical exponents. We formulate a complete scaling theory of buckling as an unusual phase transition with a size dependent critical point, and discuss experimental ramifications for the mechanical manipulation of ultrathin nanomaterials.
description: 31 pages, 8 figures (included summary of results and comparison to experiments)
Excitation functions of proton induced nuclear reactions on natW up to 40 MeV
Creators: name: Khandake, M. U.
name: Uddin, M. S.
name: Kim, K. S.
name: Lee, M. W.
name: Lee, Y. S.
name: Kim, G. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Excitation functions for the production of the 181,182m,182g,183,184g,186Re and 183,184Ta radionuclides from proton bombardment on natural tungsten were measured using the stacked-foil activation technique for the proton energies up to 40 MeV. A new data set has been given for the formation of the investigated radionuclides. Results are in good agreement with the earlier reported experimental data and theoretical calculations based on the ALICE-IPPE code. The thick target integral yields were also deduced from the measured excitation functions. The deduced yield values were compared with the directly measured thick target yield (TTY), and found acceptable agreement. The investigated radionuclide 186Re has remarkable applications in the field of nuclear medicine, whereas the data of 183,184gRe and 183Ta have potential applications in thin layer activation analysis and biomedical tracer studies, respectively.
description: 21papes, 14 figures
Proof of Kaneko--Tsumura Conjecture on Triple T-Values
Creators: name: Berger, Sasha
name: Chandra, Aarav
name: Jain, Jasper
name: Xu, Daniel
name: Xu, Ce
name: Zhao, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11M06, 11M32, 11M35, 11G55, 11B39

description: Many $\mathbb{Q}$-linear relations exist between multiple zeta values, the most interesting of which are various weighted sum formulas. In this paper, we generalized these to Euler sums and some other variants of multiple zeta values by considering the generating functions of the Euler sums. Through this approach we are able to re-prove a few known formulas, confirm a conjecture of Kaneko and Tsumura on triple $T$-values, and discover many new identities.
description: 11 pages, streamline the draft so that only results relevant to the proof of the conjecture are presented
Nonequilibrium stationary states with Gibbs measure for two or three species of interacting particles
Creators: name: Luck, J. M.
name: Godreche, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We construct explicit examples of one-dimensional driven diffusive systems for two and three species of interacting particles, defined by asymmetric dynamical rules which do not obey detailed balance, but whose nonequilibrium stationary-state measure coincides with a prescribed equilibrium Gibbs measure. For simplicity, the measures considered in this construction only involve nearest-neighbor interactions. For two species, the dynamics thus obtained generically has five free parameters, and does not obey pairwise balance in general. The latter property is satisfied only by the totally asymmetric dynamics and the partially asymmetric dynamics with uniform bias, i.e., the cases originally considered by Katz, Lebowitz, and Spohn. For three species of interacting particles, with nearest-neighbor interactions between particles of the same species, the totally asymmetric dynamics thus obtained has two free parameters, and obeys pairwise balance. These models are put in perspective with other examples of driven diffusive systems. The emerging picture is that asymmetric (nonequilibrium) stochastic dynamics leading to a given stationary-state measure are far more constrained (in terms of numbers of free parameters) than the corresponding symmetric (equilibrium) dynamics.
description: 18 pages, 8 tables, 1 figure. Stylistic and other minor improvements
title: 'A modern Wessex of the penny post' : letters and the post in Thomas Hardy’s novels
Creators: name: Koehler, Karin
Publisher: name: University of St Andrews
publisherIdentifier: https://ror.org/02wn5qz54
publisherIdentifierScheme: ROR
Year: 2015

description: This thesis examines the use and representation of letters (and other written messages) in Thomas Hardy’s novels, and it considers how Hardy’s writing engages with Victorian communication technologies. The 1895 Preface to Far from the Madding Crowd describes Hardy’s fictional setting as a ‘a modern Wessex of railways, the penny post, mowing and reaping machines, union workhouses, lucifer matches, labourers who could read and write, and National school children’. The penny post, a communication revolution with an enormous social, economic, and cultural impact, was introduced on 10 January 1840, just a few months before Hardy was born. This thesis aims to demonstrate how a consideration of the material, technological and cultural conditions of communication in Victorian England might reshape our understanding of Hardy’s novels, especially of the countless letters, notes, and telegrams which permeate his texts. The written messages in Hardy’s novels serve as a means for exploring the process of human communication, and the way this process shapes individual identity, interpersonal relationships, and social interactions alike. Chapter I of this thesis relates Hardy’s portrayal of letters to the historical transition from oral tradition to written culture. Chapter II enquires into the relationship between letter writing and notions of privacy and publicity in Hardy’s novels. Chapters III and IV argue that Hardy uses letters so as to give a strikingly modern complexity to his representation of human subjectivity and intersubjectivity. The two final chapters investigate how the modalities and technological conditions of written communication influence the construction of Hardy’s narratives, the design of his plots. Taken together, the six chapters examine Hardy’s perception of one of the most fundamental human activities: communication.
Multi-label Classification via Adaptive Resonance Theory-based Clustering
Creators: name: Masuyama, Naoki
name: Nojima, Yusuke
name: Loo, Chu Kiong
name: Ishibuchi, Hisao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This paper proposes a multi-label classification algorithm capable of continual learning by applying an Adaptive Resonance Theory (ART)-based clustering algorithm and the Bayesian approach for label probability computation. The ART-based clustering algorithm adaptively and continually generates prototype nodes corresponding to given data, and the generated nodes are used as classifiers. The label probability computation independently counts the number of label appearances for each class and calculates the Bayesian probabilities. Thus, the label probability computation can cope with an increase in the number of labels. Experimental results with synthetic and real-world multi-label datasets show that the proposed algorithm has competitive classification performance to other well-known algorithms while realizing continual learning.
Non-Markovian perturbation theories for phonon effects in strong-coupling cavity quantum electrodynamics
Creators: name: Bundgaard-Nielsen, Matias
name: Mørk, Jesper
name: Denning, Emil Vosmar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Phonon interactions are inevitable in cavity quantum electrodynamical systems based on solid-state emitters or fluorescent molecules, where vibrations of the lattice or chemical bonds couple to the electronic degrees of freedom. Due to the non-Markovian response of the vibrational environment, it remains a significant theoretical challenge to describe such effects in a computationally efficient manner. This is particularly pronounced when the emitter-cavity coupling is comparable to or larger than the typical phonon energy range, and polariton formation coincides with vibrational dressing of the optical transitions. In this Article, we consider four non-Markovian perturbative master equation approaches to describe such dynamics over a broad range of light-matter coupling strengths and compare them to numerically exact reference calculations using a tensor network. The master equations are derived using different basis transformations and a perturbative expansion in the new basis is subsequently introduced and analyzed. We find that two approaches are particularly successful and robust. The first of these is suggested and developed in this Article and is based on a vibrational dressing of the exciton-cavity polaritons. This enables the description of distinct phonon-polariton sidebands that appear when the polariton splitting exceeds the typical phonon frequency scale in the environment. The second approach is based on a variationally optimized polaronic vibrational dressing of the electronic state. Both of these approaches demonstrate good qualitative and quantitative agreement with reference calculations of the emission spectrum and are numerically robust, even at elevated temperatures, where the thermal phonon population is significant.
description: 17 pages, 10 figures
Risk, Agricultural Production, and Weather Index Insurance in Village India
Creators: name: Michler, Jeffrey D.
name: Viens, Frederi G.
name: Shively, Gerald E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: We investigate the sources of variability in agricultural production and their relative importance in the context of weather index insurance for smallholder farmers in India. Using parcel-level panel data, multilevel modeling, and Bayesian methods we measure how large a role seasonal variation in weather plays in explaining yield variance. Seasonal variation in weather accounts for 19-20 percent of total variance in crop yields. Motivated by this result, we derive pricing and payout schedules for actuarially fair index insurance. These calculations shed light on the low uptake rates of index insurance and provide direction for designing more suitable index insurance.
Coping strategies and uncertainty in the woman with gestational diabetes
Creators: name: Riddell, Lenore Anne
Publisher: name: University of British Columbia
Year: 2008

description: The purpose of this descriptive correlational study was to describe the level of uncertainty, the coping strategies, and the relationship between uncertainty and coping strategies for women with gestational diabetes. Snyder's (1979) holistic model of childbearing and Mishel's (1984, 1988) theory of uncertainty served as the theoretical framework for the study. A convenience sample of 46 subjects who were experiencing gestational diabetes for the first time completed the Uncertainty Stress Scale (High-Risk Pregnancy Version), the Jaloweic Coping Scale (1987), and a patient information sheet. The questionnaires to the subjects were mailed. For the majority of subjects this was their first pregnancy. The average gestational age of the subjects was 31.2 weeks. The average maternal age was 31.6 years. The majority had a family history of diabetes. Overall, the women with gestational diabetes perceived moderately low levels of uncertainty however, perceived uncertainty varied from quite low to quite high. The women also indicated that gestational diabetes was considered to be fairly serious. The nature of the uncertainty appeared to be generated primarily by concerns over the baby's health and the meaning of the diabetes for the women's pregnancy. Women who were in the 20 to 29 weeks pregnancy group perceived the most uncertainty. Women with gestational diabetes used various coping strategies to manage their uncertainty and the stress it generated. There was a tendency to use optimistic and confrontive coping strategies the most with problem-focused coping strategies being the most frequently used in dealing with the stress of gestational diabetes. Findings indicated that the patients with higher levels of uncertainty tended to use emotion-focused coping strategies such as evasive, fatalistic and self-reliant. Findings also indicated that although positive feelings may be associated with the uncertainty, positive feelings were rather low. Based on the findings of this study, implications were suggested for new directions for the provision of effective nursing care for women with gestational diabetes. It also recommended that further research is needed to identify and explore relationships between uncertainty and coping strategies, particularly as it relates over time.
Tachibana-type Theorems and special Holonomy
Creators: name: Petersen, Peter
name: Wink, Matthias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32Q10, 32Q15, 32Q20, 53C20, 53C26

description: We prove rigidity results for compact Riemannian manifolds in the spirit of Tachibana. For example, we observe that manifolds with divergence free Weyl tensors and $\lfloor \frac{n-1}{2} \rfloor$-nonnegative curvature operators are locally symmetric or conformally equivalent to a quotient of the sphere. The main focus of the paper is to prove similar results for manifolds with special holonomy. In particular, we consider Kähler manifolds with divergence free Bochner tensor. For quaternion Kähler manifolds we obtain a partial result towards the LeBrun-Salamon conjecture.
description: 22 pages, references updated
Magnetic field induced orientation of superconducting MgB$_2$ crystallites determined by X-ray diffraction
Creators: name: Li, J.
name: Vaknin, D.
name: Bud'ko, S. L.
name: Canfield, P. C.
name: Pal, D.
name: Eskildsen, M. R.
name: Islam, Z.
name: Kogan, V. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: X-ray diffraction studies of fine polycrystalline samples of MgB$_2$ in the superconducting state reveal that crystals orient with their \emph{c}-axis in a plane normal to the direction of the applied magnetic field. The MgB$_2$ samples were thoroughly ground to obtain average grain size 5 - 10 $μ$m in order to increase the population of free single crystal grains in the powder. By monitoring Bragg reflections in a plane normal to an applied magnetic field we find that the powder is textured with significantly stronger (\emph{0,0,l}) reflections in comparison to (\emph{h,k,0}), which remain essentially unchanged. The orientation of the crystals with the \emph{ab}-plane parallel to the magnetic field at all temperatures below $T_c$ demonstrates that the sign of the torque under magnetic field does not alter, in disagreement with current theoretical predictions.
title: La disciplina del recesso del cliente dai contratti di prestazione d’opera e servizi intellettuali a termine oltre gli angusti confini dell’art. 2337 c.c.
Creators: name: Lamicela, Mariella
Publisher: name: Edizioni Ca' Foscari - Digital Publishing
Year: 2014

description: Ricerche giuridiche, 2 | 2 | 2013
MOESM4 of BMP3 suppresses colon tumorigenesis via ActRIIB/SMAD2-dependent and TAK1/JNK signaling pathways
Creators: name: Wen, Jialing
name: Liu, Xianglin
name: Qi, Yan
name: Niu, Feng
name: Niu, Zhitong
name: Geng, Wenjing
name: Zou, Zhaowei
name: Huang, Renli
name: Wang, Jianping
name: Zou, Hongzhi
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Virology

description: Additional file 4: Table S1. shRNA sequences and Primers for PCR. Table S2. Immunohistochemistry showed the expression of BMP3 in tissue samples.
Sawmill Homesite
Creators: name: Hammond, Jon
name: Hernandez, Betty
name: Hicks, Lucille
name: Grant, Laura
name: Turner, Julie
name: Everson, Merlene
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: This file contains discussion of childhood memories from the Sawmill homesite on Paiute Mountain; speakers discuss growing up in tents, their parents' employment and work, and general memories of events that occurred at the campsite.
Quantum dynamics of Mn$^{2+}$ in dimethylammonium magnesium formate
Creators: name: Orio, M.
name: Bindra, J. K.
name: vanTol, J.
name: Giorgi, M.
name: Dalal, N.
name: Bertaina, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dimethylammonium magnesium formate, [(CH$_3$)$_2$NH$_2$][Mg(HCOO)$_3$] or DMAMgF, is a model to study high temperature hybrid perovskite-like dielectrics. This compound displays a phase transition from para to ferroelectric at about 260~K. Using multifrequency electron spin resonance in continuous wave and pulsed modes, we herein present the quantum dynamic of Mn$^{2+}$ ion probe in DMAMgF. In the high temperature paraelectric phase, we observe a large distribution of the zero field splitting that is attributed to high local disorder and further supported by DFT computations. In the low temperature ferroelectric phase, a single structure phase is detected and shown to contain two magnetic structures. The complex EPR signals were identifed by the means of Rabi oscillation method combined to crystal fields kernel density estimation.
Quantum Deformations of Einstein's Relativistic Symmetries
Creators: name: Lukierski, Jerzy
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We shall outline two ways of introducing the modification of Einstein's relativistic symmetries of special relativity theory - the Poincaré symmetries. The most complete way of introducing the modifications is via the noncocommutative Hopf-algebraic structure describing quantum symmetries. Two types of quantum relativistic symmetries are described, one with constant commutator of quantum Minkowski space coordinates ($θ_{μν}$-deformation) and second with Lie-algebraic structure of quantum space-time, introducing so-called $κ$-deformation. The third fundamental constant of Nature - fundamental mass $κ$ or length $λ$ - appears naturally in proposed quantum relativistic symmetry scheme. The deformed Minkowski space is described as the representation space (Hopf-module) of deformed Poincaré algebra. Some possible perspectives of quantum-deformed relativistic symmetries will be outlined.
description: LaTeX, 8 pages, AIP Proceedings style (included). Submitted to the Proceedings of Albert Einstein Century International Conference, July 18--22, 2005, Paris
Order by disorder in frustration-free systems: a Quantum Monte Carlo study of a two-dimensional PXP model
Creators: name: Yue, Mingxi
name: Wang, Zijian
name: Mukherjee, Bhaskar
name: Cai, Zi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In this study, an order by disorder mechanism has been proposed in a two-dimensional PXP model, where the extensive degeneracy of the classical ground-state manifold is due to strict occupation constraints instead of geometrical frustrations. By performing an unbias large-scale quantum monte carlos simulation, we find that local quantum fluctuations, which usually work against long-range ordering, lift the macroscopic classical degeneracy and give rise to a compressible ground state with charge-density-wave long-range order. A simple trial wavefunction has been proposed to capture the essence of the ground-state of the two-dimensional PXP model. The finite temperature properties of this model have also been studied, and we find a thermal phase transition with an universality class of two-dimensional Ising model.
description: 4 pages
Job satisfaction in critical care nurses
Creators: name: Turner, Barbara Elly
Publisher: name: University of British Columbia
Year: 2008

description: This descriptive study was designed to explore job satisfaction among critical care nurses using an established conceptual framework of job satisfaction entitled the Job Characteristics Model (Hackman & Oldham, 1980). The standardized measures of general job satisfaction and other job design variables were the Job Diagnostic Survey (Hackman& Oldham, 1980) and the Index of Job Satisfaction (Brayfield& Rothe, 1951). These were sent to a random sample of 300 employed critical care nurses in British Columbia. 127 usable questionnaires were returned and formed the basis for the results. The nurses found task significance and skill variety the strongest characteristics of motivating potential, task identity the lowest. The strongest relationships were seen between general job satisfaction and motivating potential of the job, meaningfulness of the work, and context satisfactions. There was also a significant relationship between general job satisfaction and length of nursing experience.
Landscape Predictions from Cosmological Vacuum Selection
Creators: name: Bousso, Raphael
name: Yang, I-Sheng
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In BP models with hundreds of fluxes, we compute the effects of cosmological dynamics on the probability distribution of landscape vacua. Starting from generic initial conditions, we find that most fluxes are dynamically driven into a different and much narrower range of values than expected from landscape statistics alone. Hence, cosmological evolution will access only a tiny fraction of the vacua with small cosmological constant. This leads to a host of sharp predictions. Unlike other approaches to eternal inflation, the holographic measure employed here does not lead to "staggering", an excessive spread of probabilities that would doom the string landscape as a solution to the cosmological constant problem.
description: 15 pages, 6 figures, v4 prd format, minor editing
A loop group formulation for constant curvature submanifolds of pseudo-Euclidean space
Creators: name: Brander, David
name: Rossman, Wayne
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37K25; 53C42; 53B25

description: We give a loop group formulation for the problem of isometric immersions with flat normal bundle of a simply connected pseudo-Riemannian manifold $M_{c,r}^m$, of dimension $m$, constant sectional curvature $c \neq 0$, and signature $r$, into the pseudo-Euclidean space $\real_s^{m+k}$, of signature $s\geq r$. In fact these immersions are obtained canonically from the loop group maps corresponding to isometric immersions of the same manifold into a pseudo-Riemannian sphere or hyperbolic space $S_s^{m+k}$ or $H_s^{m+k}$, which have previously been studied. A simple formula is given for obtaining these immersions from those loop group maps.
description: 9 pages, minor corrections to terminology
Position measurement of a dipolar scatterer via self-homodyne detection
Creators: name: Cerchiari, G.
name: Dania, L.
name: Bykov, D. S.
name: Blatt, R.
name: Northup, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We describe a technique to measure the position of a dipolar scatterer based on self-homodyne detection of the scattered light. The method can theoretically reach the Heisenberg limit, at which information gained about the position is constrained only by the back-action of the scattered light. The technique has applications in the fields of levitated optomechanics and trapped ions and is generally applicable to the position determination of confined light scatterers.
description: 11 pages, 5 figures
Recent Developments in Inference: Practicalities for Applied Economics
Creators: name: Michler, Jeffrey D.
name: Josephson, Anna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Econometrics (econ.EM)
subject: FOS: Economics and business

description: We provide a review of recent developments in the calculation of standard errors and test statistics for statistical inference. While much of the focus of the last two decades in economics has been on generating unbiased coefficients, recent years has seen a variety of advancements in correcting for non-standard standard errors. We synthesize these recent advances in addressing challenges to conventional inference, like heteroskedasticity, clustering, serial correlation, and testing multiple hypotheses. We also discuss recent advancements in numerical methods, such as the bootstrap, wild bootstrap, and randomization inference. We make three specific recommendations. First, applied economists need to clearly articulate the challenges to statistical inference that are present in data as well as the source of those challenges. Second, modern computing power and statistical software means that applied economists have no excuse for not correctly calculating their standard errors and test statistics. Third, because complicated sampling strategies and research designs make it difficult to work out the correct formula for standard errors and test statistics, we believe that in the applied economics profession it should become standard practice to rely on asymptotic refinements to the distribution of an estimator or test statistic via bootstrapping. Throughout, we reference built-in and user-written Stata commands that allow one to quickly calculate accurate standard errors and relevant test statistics.
A Numerical-Analytical Method for Constructing Periodic Solutions of the Lorenz System
Creators: name: Pchelintsev, Alexander N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 65, 34

description: This article describes a method for constructing approximations to periodic solutions of dynamic Lorenz system with classical values of the system parameters. The author obtained a system of nonlinear algebraic equations in general form concerning of the cyclic frequency, constant terms and amplitudes of harmonics that make up harmonic approximations to the desired solutions. The initial approximation for the Newton method is selected, which converges to a solution describing a periodic solution different from the equilibrium position. The results of a computational experiment are presented. The results are verified using high-precision calculations.
description: Differential Equations & Control Processes, 4 (2020), 59-75
Magnetic monopole as the shadow side of the electric charge
Creators: name: Krasnoholovets, Volodymyr
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: It is shown that a magnetic monopole appears as the tension state of the primary electric charge at its motion through each section of the path equal to the particle's de Broglie wavelength. This conclusion is followed from a submicroscopic consideration of particles and their motion in the framework of the theory of physical space in the form of a tessellattice developed by Michel Bounias and the author. The periodical change of the particle's charged state to its monopole state can easily be introduced in the conventional Maxwell equations and the magnetic monopole automatically shows up in the structure of Maxwell's equations. The monopole is also presented in any quark system as a quark obeys dynamics that are also characterized by the appropriate de Broglie wavelength and hence the electric charge changes periodically to the magnetic monopole. A (anti)neutrino emerges as the typical electron's monopole. When the charged particle becomes the monopole, it also loses its mass (the mass passes to the particle's inerton cloud) and thus the neutrino is a massless particle, or more correctly massless monopole.
description: 8 pages, 3 Figs., 10 Refs., Proceedings of 11th International Symposium Honoring Noted Mathematical Physicist Jean-Pierre Vigier "ADVANCES IN FUNDAMENTAL PHYSICS", Liege, Belgium, 6 -- 9 August 2018. Editors: R. l. Amoroso, D. Dubois and P. Rowlands
On the transient and steady state of mass-conserved reaction diffusion systems
Creators: name: Ishihara, Shuji
name: Otsuji, Mikiya
name: Mochizuki, Atsushi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Reaction diffusion systems with Turing instability and mass conservation are studied. In such systems, abrupt decays of stripes follow quasi-stationary states in sequence. At steady state, the distance between stripes is much longer than that estimated by linear stability analysis at a homogeneous state given by alternative stability conditions. We show that there exist systems in which a one-stripe pattern is solely steady state for an arbitrary size of the systems. The applicability to cell biology is discussed.
description: 12 pages, 3 figures
Sawmill Homesite (B-roll)
Creators: name: Hammond, Jon
name: Hernandez, Betty
name: Hicks, Lucille
name: Grant, Laura
name: Turner, Julie
name: Everson, Merlene
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: This file contains discussion of childhood memories from the Sawmill homesite on Paiute Mountain; speakers discuss growing up in tents, their parents' employment and work, and general memories of events that occurred at the campsite.