cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multiple and changing cycles of active stars I. Methods of analysis and application to the solar cycles
Creators: name: Kolláth, Z.
name: Oláh, K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Long-term observational data have information on the magnetic cycles of active stars and that of the Sun. The changes in the activity of our central star have basic effects on Earth, like variations in the global climate. Therefore understanding the nature of these variations is extremely important. The observed variations related to magnetic activity cannot be treated as stationary periodic variations, therefore methods like Fourier transform or different versions of periodogramms give only partial information on the nature of the light variability. We demonstrate that time-frequency distributions provide useful tools for analyzing the observations of active stars. With test data we demonstrate that the observational noise has practically no effect on the determination in the the long-term changes of time-series observations of active stars. The rotational signal may modify the determined cycles, therefore it is advisable to remove it from the data. Wavelets are less powerful in recovering complex long-term changes than other distributions which are discussed. Applying our technique to the sunspot data we find a complicated, multi-scale evolution in the solar activity.
description: Accepted to Astronomy and Astrophysics
Towards a Generalisation of Noether's Theorem to Nonclassical Hopf-Galois Structures
Creators: name: Truman, Paul J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11R33

description: We study the nonclassical Hopf-Galois module structure of rings of algebraic integers in some extensions of $ p $-adic fields and number fields which are at most tamely ramified. We show that if $ L/K $ is an unramified extension of $ p $-adic fields which is $ H $-Galois for some Hopf algebra $ H $ then $ \OL $ is free over its associated order $ \AH $ in $ H $. If $ H $ is commutative, we show that this conclusion remains valid in ramified extensions of $ p $-adic fields if $ p $ does not divide the degree of the extension. By combining these results we prove a generalisation of Noether's theorem to nonclassical Hopf-Galois structures on domestic extensions of number fields.
description: 15 Pages
Количественное определение дубильных веществ и органических кислот в листьях СORNUS MAS L.
Creators: name: Сообщество рецензентов Международного научно-исследовательского журнала
Publisher: name: ООО Цифра
Year: 2023
Subjects: cornel leaves
Carnus mas L.
quantitative analysis
tannins
organic acids
листья кизила
Сornus Mas L.
количественный анализ
дубильные вещества
органические кислоты

description: Международный научно-исследовательский журнал, Выпуск 12 (138) 2023
Isolation and structural determination of alkaloids and other plant products.
Creators: name: Bick, Ian Ralph Connolly
Publisher: name: University Of Tasmania
Year: 2023

description: The papers in the following list are in order of publication; the greater number (3-9, 12-14, 16, 18-21 24-28, 30, 32-34, 36-40) are concerned with the chemistry of alktoloids, mostly of the bisbenzylisoquinoline type, although certain others each as aporphines and spermatheridines (9, 16, 25-27, 30, 32-34, 37) are also represented. The remaining papers, apart from two on laboratory techniques (2, 10), comprise work on essential oil constituents (1, 22.43, 29, 31), including a group of 0-triketones (23, 29, 31); fungal pigments (11, 35) and other mould products (15); and miscellaneous plant extractives (17, 34).
The position of Women in T'ai-p'ing T'ien-kuo
Creators: name: Pan, Yuh-Cheng
Publisher: name: University of British Columbia
Year: 2011

description: The study attempts to assess the position of women in T'ai-p'ing T'ien-kuo ("The Heavenly Kingdom of Peace"), a rebellious political movement that almost succeeded in overthrowing the Ch'ing dynasty in mid-nineteenth century China. It is argued that the rebellion arose in the context a peasant society suffering the varying dislocations of dynastic decline under the Impact of the West. It was a rebellion that put forward a radical social program and one, especially in its policies towards women, that can be seen as a significant departure from Chinese tradition. The study attempts to examine Taiping policy with regard to marriage and the family; the establishment of separate quarters for women; the role of women in education; civil examinations for women; women officers; the abolition of (female) slavery; the prohibition of adultery and prostitution; and social customs and personal adornments. The study is based on Chinese and English sources. As unorthodox literature Taiping official documents were prohibited and destroyed by the Ch'ing government. They were also greatly damaged by war. Some contemporary accounts in English survive. The data are deficient in many respects and yet indicate the strength and weaknesses of the rebellion and its program. Much of the Taiping program was "western" in origin and is reflective of the early Christian influence, derived from Hong Kong through certain Taiping leaders, on the rebellion. The rebellion had its greatest strength among the disaffected, especially among the Hakka minority of south China. It is argued that Hakka custom was an important contributory element to the Taiping policy for women. The rebellion failed, and its program perished, for a number of reasons, not least of which was the failure of Taiping leadership to rid itself of certain "traditional influences". If the rebellion had succeeded, perhaps the emancipation of Chinese women would not have been delayed until the twentieth century.
Additional file 2 of The correlation of EZH2 expression with the progression and prognosis of hepatocellular carcinoma
Creators: name: Wu, Shi-yi
name: Xie, Zhao-yu
name: Yan, Lu-yu
name: Liu, Xiao-fang
name: Zhang, Yue
name: Wang, Da-an
name: Dong, Jie
name: Sun, Hong-tao
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file2: Table S1. EZH2 expression in cancers verus normal tissue in oncomine database.
The BLAST Survey of the Vela Molecular Cloud: Physical Properties of the Dense Cores in Vela-D
Creators: name: Olmi, Luca
name: Ade, Peter A. R.
name: Angles-Alcazar, Daniel
name: Bock, James J.
name: Chapin, Edward L.
name: De Luca, Massimo
name: Devlin, Mark J.
name: Dicker, Simon
name: Elia, Davide
name: Fazio, Giovanni G.
name: Giannini, Teresa
name: Griffin, Matthew
name: Gundersen, Joshua O.
name: Halpern, Mark
name: Hargrave, Peter C.
name: Hughes, David H.
name: Klein, Jeff
name: Lorenzetti, Dario
name: Marengo, Massimo
name: Marsden, Gaelen
name: Martin, Peter G.
name: Massi, Fabrizio
name: Mauskopf, Philip
name: Netterfield, Calvin B.
name: Patanchon, Guillaume
name: Rex, Marie
name: Salama, Alberto
name: Scott, Douglas
name: Semisch, Christopher
name: Smith, Howard A.
name: Strafella, Francesco
name: Thomas, Nicholas
name: Truch, Matthew D. P.
name: Tucker, Carole
name: Tucker, Gregory S.
name: Viero, Marco P.
name: Wiebe, Donald V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Balloon-borne Large-Aperture Submillimeter Telescope (BLAST) carried out a 250, 350 and 500 micron survey of the galactic plane encompassing the Vela Molecular Ridge, with the primary goal of identifying the coldest dense cores possibly associated with the earliest stages of star formation. Here we present the results from observations of the Vela-D region, covering about 4 square degrees, in which we find 141 BLAST cores. We exploit existing data taken with the Spitzer MIPS, IRAC and SEST-SIMBA instruments to constrain their (single-temperature) spectral energy distributions, assuming a dust emissivity index beta = 2.0. This combination of data allows us to determine the temperature, luminosity and mass of each BLAST core, and also enables us to separate starless from proto-stellar sources. We also analyze the effects that the uncertainties on the derived physical parameters of the individual sources have on the overall physical properties of starless and proto-stellar cores, and we find that there appear to be a smooth transition from the pre- to the proto-stellar phase. In particular, for proto-stellar cores we find a correlation between the MIPS24 flux, associated with the central protostar, and the temperature of the dust envelope. We also find that the core mass function of the Vela-D cores has a slope consistent with other similar (sub)millimeter surveys.
description: Accepted for publication in the Astrophysical Journal. Data and maps are available at http://blastexperiment.info/
Neutrinos from Inert Doublet Dark Matter
Creators: name: Andreas, Sarah
name: Tytgat, Michel H. G.
name: Swillens, Quentin
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the signatures of neutrinos produced in the annihilation of WIMP dark matter in the Earth, the Sun and at the Galactic centre within the framework of the Inert Doublet Model and extensions. We consider a dark matter candidate, that we take to be one of the neutral components of an extra Higgs doublet, in three distinct mass ranges, which have all been shown previously to be consistent with both WMAP abundance and direct detection experiments exclusion limits. Specifically, we consider a light WIMP with mass between 4 and 8 GeV (low), a WIMP with mass around 60-70 GeV (middle) and a heavy WIMP with mass above 500 GeV (high). In the first case, we show that capture in the Sun may be constrained using Super-Kamiokande data. In the last two cases, we argue that indirect detection through neutrinos is challenging but not altogether excluded. For middle masses, we try to make the most benefit of the proximity of the so-called 'iron resonance' that might enhance the capture of the dark matter candidate by the Earth. The signal from the Earth is further enhanced if light right-handed Majorana neutrinos are introduced, in which case the scalar dark matter candidate may annihilate into pairs of mono-energetic neutrinos. In the case of high masses, detection of neutrinos from the Galactic centre might be possible, provided the dark matter abundance is substantially boosted.
description: 25 pages, 13 figures; v2: minor changes, more detailed discussion on capture, conclusions unchanged, matches published version (JCAP)
Prediction of electrically-induced magnetic reconstruction at the manganite/ferroelectric interface
Creators: name: Burton, J. D.
name: Tsymbal, E. Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The control of magnetization via the application of an electric field, known as magnetoelectric coupling, is among the most fascinating and active research areas today. In addition to fundamental scientific interest, magnetoelectric effects may lead to new device concepts for data storage and processing. There are several known mechanisms for magnetoelectric coupling that include intrinsic effects in single-phase materials, strain induced coupling in two-phase composites, and electronically-driven effects at interfaces. Here we explore a different type of magnetoelectric effect at a ferromagnetic-ferroelectric interface: magnetic reconstruction induced by switching of electric polarization. We demonstrate this effect using first-principles calculations of a La1-xAxMnO3/BaTiO3 (001) interface, where A is a divalent cation. By choosing the doping level x to be near a transition between magnetic phases we show that the reversal of the ferroelectric polarization of BaTiO3 leads to a change in the magnetic order at the interface from ferromagnetic to antiferromagnetic. This predicted electrically-induced magnetic reconstruction at the interface represents a substantial interfacial magnetoelectric effect.
description: 7 pages, 5 figures, 1 table
Fluctuation-dissipation relations and field-free algorithms for the computation of response functions
Creators: name: Corberi, Federico
name: Lippiello, Eugenio
name: Sarracino, Alessandro
name: Zannetti, Marco
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss the relation between the fluctuation-dissipation relation derived by Chatelain and Ricci-Tersenghi [C.Chatelain, J.Phys. A {\bf 36}, 10739 (2003); F. Ricci-Tersenghi, Phys.Rev.E 68, 065104(R) (2003)] and that by Lippiello-Corberi-Zannetti [E. Lippiello, F. Corberi and M. Zannetti Phys. Rev. E {\bf 72}, 056103 (2005)]. In order to do that, we re-derive the fluctuation-dissipation relation for systems of discrete variables evolving in discrete time via a stochastic non-equilibrium Markov process. The calculation is carried out in a general formalism comprising the Chatelain, Ricci-Tersenghi result and that by Lippiello-Corberi-Zannetti as special cases. The applicability, generality, and experimental feasibility of the two approaches is thoroughly discussed. Extending the analytical calculation to the variance of the response function we show the vantage of field-free numerical methods with respect to the standard method where the perturbation is applied. We also show that the signal to noise ratio is better (by a factor $\sqrt 2$) in the algorithm of Lippiello-Corberi-Zannetti with respect to that of Chatelain-Ricci Tersenghi.
description: 17 pages, 5 figures. To appear in Phys. Rev. E
VBS State Induced by Impurity Frustration in Cr8Ni
Creators: name: Almeida, J.
name: Martin-Delgado, M. A.
name: Sierra, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We provide a physically meaningful picture of the nature of the ground state of the Cr8Ni compound in the regime where it is a spin singlet. According to this picture, the anisotropy of the $Ni$ atom in the $Cr$ ring induces a dimerization in the molecule that makes the ground state to stabilize in a Valence Bond Solid phase of virtual spins. We characterize rigorously this phase by means of a particular non-local order parameter denoted the generalized string order parameter. In the completely antiferromagnetic regime, the system becomes frustrated. We have performed a numerical real-time evolution study of the correlations between the spin of the $Ni$ impurity and the rest of the spins in order to show the reaction of the system under this frustration. We provide results that manifestly show the agreement with the Valence Bond Solid picture introduced.
description: 10 pages, 8 figures
Millimetre observations of a sample of high-redshift obscured quasars
Creators: name: Martinez-Sansigre, Alejo
name: Karim, Alexander
name: Schinnerer, Eva
name: Omont, Alain
name: Smith, Daniel J. B.
name: Wu, Jingwen
name: Hill, Gary J.
name: Kloeckner, Hans-Rainer
name: Lacy, Mark
name: Rawlings, Steve
name: Willott, Chris J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present observations at 1.2 mm with MAMBO-II of a sample of z>~2 radio-intermediate obscured quasars, as well as CO observations of two sources with the Plateau de Bure Interferometer. Five out of 21 sources (24%) are detected at a significance of >=3sigma. Stacking all sources leads to a statistical detection of = 0.96+-0.11 mJy and stacking only the non-detections also yields a statistical detection, with = 0.51+-0.13 mJy. This corresponds to a typical far-infrared luminosity L_FIR~4x10^12 Lsol. If the far-infrared luminosity is powered entirely by star-formation, and not by AGN-heated dust, then the characteristic inferred star-formation rate is ~700 Msol yr-1. This far-infrared luminosity implies a dust mass of M_dust~3x10^8 Msol. We estimate that such large dust masses on kpc scales can plausibly cause the obscuration of the quasars. We present dust SEDs for our sample and derive a mean SED for our sample. This mean SED is not well fitted by clumpy torus models, unless additional extinction and far-infrared re-emission due to cool dust are included. There is a hint that the host galaxies of obscured quasars must have higher far-infrared luminosities and cool-dust masses and are therefore often found at an earlier evolutionary phase than those of unobscured quasars. For one source at z=2.767, we detect the CO(3-2) transition, with S_CO Delta nu=630+-50 mJy km s-1, corresponding to L_CO(3-2)= 3.2x10^7 Lsol, or L'_CO(3-2)=2.4x10^10 K km s-1 pc2. For another source at z=4.17, the lack of detection of the CO(4-3) line yields a limit of L'_CO(4-3)<1x10^10 K km s-1 pc2. Molecular gas masses, gas depletion timescales and gas-to-dust ratios are estimated (Abridged).
description: Accepted by ApJ, 25 pages, 11 figures, 4 tables
Spontaneous and Induced Decay of Metastable Strings and Domain Walls
Creators: name: Monin, A.
name: Voloshin, M. B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider decay of metastable topological configurations such as strings and domain walls. The transition from a state with higher energy density to a state with lower one proceeds through quantum tunneling or through thermally catalyzed quantum tunneling (at sufficiently small temperatures). The transition rate is calculated at zero temperature including the preexponential factor and also at a finite low temperature. The thermal catalysis factor is closely related to the probability (effective length) of destruction of the string (the domain wall) in collisions of the Goldstone bosons, corresponding to transverse waves on the string (wall). We derive a general formula which allows to find the probability (effective length) of a string (wall) breakup by a collision of arbitrary number of the bosons. We find that the destruction of a string only takes place in collisions of even number of the bosons, while the destruction of the wall can occur in a collision of any number of particles. We explicitly calculate the energy dependence of such processes in two-particle collisions for arbitrary relation between the energy and the largest infrared scale (the size of a critical gap).
description: 49 pages, 12 figures
Resonances in an external field: the 1+1 dimensional case
Creators: name: Hoja, D.
name: Meißner, U. -G.
name: Rusetsky, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using non-relativistic effective field theory in 1+1 dimensions, we generalize Luescher's approach for resonances in the presence of an external field. This generalized approach provides a framework to study the infinite-volume limit of the form factor of a resonance determined in lattice simulations.
description: 13 pages, 2 postscript figures
Approximate forms of the density of states
Creators: name: Denbleyker, A.
name: Du, Daping
name: Liu, Yuzhi
name: Meurice, Y.
name: Velytsky, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We compare MC calculations of the density of states in SU(2) pure gauge theory with the weak and strong coupling expansions. Surprisingly, the range of validity of the two approximations overlap significantly, however the large order behavior of both expansions appear to be similar to the corresponding expansions of the plaquette. We discuss the implications for the calculation of the Fisher's zeros of the partition function.
description: 7 pages, 6 figures, talk by Y. Meurice at the XXVI International Symposium on Lattice Field Theory, 14-19 July 2008, Williamsburg, VA, USA
Natural Suppression of Proton Decay in Supersymmetric Type III Seesaw Models
Creators: name: Mohapatra, Rabindra N.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Supersymmetric standard model (MSSM) has two sources of rapid proton decay: (i) R-parity breaking terms and (ii) higher dimensional Planck induced B-violating terms; its extensions to include neutrino masses via the type I seesaw mechanism need not have the first of these problems due to the existence of B-L as a gauge symmetry but for sure always have the second one. If instead, neutrino masses are explained in a type III seesaw extension of the standard model, an anomaly free gauge symmetry different from B-L is known to exist. In this note, it is shown that a realistic supersymmetric versions of this model can be constructed (MSSM as well as SUSY left-right with type III seesaw) which forbid the R-parity violating couplings of MSSM and suppress Planck scale contributions to proton decay. The degree of suppression of the latter depends on the weak gauge group. For the left-right case, the suppression to the desired level is easily achieved.
description: 10 pages
Measurement of neutron star parameters: a review of methods for low-mass X-ray binaries
Creators: name: Bhattacharyya, Sudip
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Measurement of at least three independent parameters, for example, mass, radius and spin frequency, of a neutron star is probably the only way to understand the nature of its supranuclear core matter. Such a measurement is extremely difficult because of various systematic uncertainties. The lack of knowledge of several system parameter values gives rise to such systematics. Low-mass X-ray binaries, which contain neutron stars, provide a number of methods to constrain the stellar parameters. Joint application of these methods has a great potential to significantly reduce the systematic uncertainties, and hence to measure three independent neutron star parameters accurately. Here we review the methods based on (1) thermonuclear X-ray bursts; (2) accretion-powered millisecond-period pulsations; (3) kilohertz quasi-periodic oscillations; (4) broad relativistic iron lines; (5) quiescent emissions; and (6) binary orbital motions.
description: 30 pages, 20 figures, 1 table, An Invited and Refereed Review, will be published in "Advances in Space Research"
Soil tillage studies with model plane chisels.
Creators: name: Strong, Chester Ray
Publisher: name: University of British Columbia
Year: 2011

description: The physical characteristics of particle size distribution, compactability and plasticity of Ottawa sand and Haney clay were determined. Direct shear tests were used to relate dry bulk density, soil water content and normal pressure to the shear strength of Ottawa sand and Haney clay. The static and kinetic values of soil-metal friction were determined for each of three chisel shaped tillage machines with Ottawa sand and Haney clay. The friction values were then related to normal pressure, area of contact and soil water content for each soil. Tillage studies were conducted and the forces resulting from soil-machine interaction were measured. For each soil, these forces were related to soil water content, dry bulk density, machine width and machine velocity. The soil and chisel variables were combined in accordance with the Buckingham π theorem to form dimensionless ratios. These dimensionless ratios were combined to form equations for use in model-prototype predictions. The accuracy of these predictions was found to vary with soil water content, dry bulk density and machine velocity. Since all measurements recorded during the course of this study were analyzed by statistical procedures, the resulting equations do not represent basic physical relationships. Caution should therefore be used if these equations are to be applied to values beyond the range of values analyzed in this report.
Additional file 1 of The correlation of EZH2 expression with the progression and prognosis of hepatocellular carcinoma
Creators: name: Wu, Shi-yi
name: Xie, Zhao-yu
name: Yan, Lu-yu
name: Liu, Xiao-fang
name: Zhang, Yue
name: Wang, Da-an
name: Dong, Jie
name: Sun, Hong-tao
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file1: Figure S1. Correlation of EZH2 expression with immune infiltration level in different tumor types via TIMER database.
Dynamical simulation of heavy-ion collisions in the energy range from a few tens MeV/A to a few hundreds MeV/A
Creators: name: Garzelli, M. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The overlapping stage of heavy-ion reactions can be simulated by dynamical microscopical models, such as those built on the basis of the Molecular Dynamics (MD) approaches, allowing to study the fragment formation process. The present performances of the Quantum MD (QMD) code developed at the University of Milano are discussed, showing results concerning fragment and particle production at bombarding energies up to $\lsim$ 700 MeV/A, as well as a preliminary analysis on the isoscaling behaviour of isotopic yield ratios for reactions with isospin composition N/Z in the (1 - 1.2) range, at a 45 MeV/A bombarding energy.
description: 12 pages, 6 figures. Invited talk presented at the 27th Workshop on Nuclear Theory, Rila Mountains, June 23 - 28 2008
Development of high critical current density in multifilamentary round-wire Bi2Sr2CaCu2O8+x by strong overdoping
Creators: name: Shen, T.
name: Jiang, J.
name: Yamamoto, A.
name: Trociewitz, U. P.
name: Schwartz, J.
name: Hellstrom, E. E.
name: Larbalestier, D. C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Bi2Sr2CaCu2O8+x is the only cuprate superconductor that can be made into a round-wire conductor form with a high enough critical current density Jc for applications. Here we show that the Jc(5 T,4.2 K) of such Ag-sheathed filamentary wires can be doubled to more than 1.4x10^5 A/cm^2 by low temperature oxygenation. Careful analysis shows that the improved performance is associated with a 12 K reduction in transition temperature Tc to 80 K and a significant enhancement in intergranular connectivity. In spite of the macroscopically untextured nature of the wire, overdoping is highly effective in producing high Jc values.
description: 4 figures
title: Transformation of the Higher Education systems of Eastern European developing countries through organisational learning: the case of Bulgariaâ.
Creators: name: Bariakova, Daniela Petrova
Publisher: name: University of Southampton
Year: 2019

description: Purpose
 This thesis aims to fill the gap in the existing literature of organisational learning and social innovation by examining the transformation of the HE systems in the Eastern European developing countries.

Design/methodology/approach
 Data was collected from system actors within the Bulgarian higher education system. Fortysix semi-structure in-depth interviews were conducted with three groups of participants: topmiddle university management, academics and policy makers/experts in 2016-2017. Three methods of analysis were applied for answering the three research questions: thematic analysis, multi-level analysis and cause-effect analysis. Results were validated by data triangulation.

Findings
 The results of the study suggest that the lack of shared vision is the primary cause that leads to the other challenges faced by the HE system in Bulgaria. Surprisingly, the individual and system barriers are associated with organisational learning, while the organisational barriers are associated with the globalisation and the inequality. Result suggests that the economic and the political are the external factors that have the greatest impact on the transformation of the system, while the collaboration and interaction are the internal factors with the greatest impact.

Research limitations/implications
 This study fills the gap in the literature on social innovation by providing qualitative empirical research, which is deficiency as most of the studies that examine social innovation are mainly review or conceptual. However, this paper uses a single-case study approach, which makes this research less generalizable to wider populations of the developing countries.

Practical implications
The findings of this study also offer strong implications for the potential to use the organisational learning theory to make predictions on the both system and organisational transformations in the real world, which might go beyond the HE context.

Originality/value
This thesis provides a holistic approach in examining the transformation of the higher education system. It offers deep understanding of both the phenomenon and the context.

Keywords: Organisational learning, social innovation, higher education, multi-level analysis
Diagrammatic theory for Periodic Anderson Model: Stationary property of the thermodynamic potential
Creators: name: Moskalenko, V. A.
name: Dohotaru, L. A.
name: Citro, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Diagrammatic theory for Periodic Anderson Model has been developed, supposing the Coulomb repulsion of $f-$ localized electrons as a main parameter of the theory. $f-$ electrons are strongly correlated and $c-$ conduction electrons are uncorrelated. Correlation function for $f-$ and mass operator for $c-$ electrons are determined. The Dyson equation for $c-$ and Dyson-type equation for $f-$ electrons are formulated for their propagators. The skeleton diagrams are defined for correlation function and thermodynamic functional. The stationary property of renormalized thermodynamic potential about the variation of the mass operator is established. The result is appropriate as for normal and as for superconducting state of the system.
description: 12 pages, 10 figures
El proceso docente para la virtualización de asignaturas
Creators: name: García-Peñalvo, F. J.
Publisher: name: Zenodo
Year: 2022
Subjects: Digitalización de la docencia; Competencias digitales; Brechas tecnológicas; Transformación digital de la Universidad

description: Conversatorio celebrado dentro de la actividad inaugural del CECED 2022 de la UNED de Costa Rica, celebrada el 17 de febrero de 2022. Este conversatorio que tiene por título “El proceso docente para la virtualización de asignaturas”, tiene como propósito reflexionar sobre los aspectos curriculares, didácticos, metodológicos y de acompañamiento docente que deben considerarse en la virtualización de asignaturas. Se organiza en tres bloques temáticos: Digitalización/virtualización de los diseños curriculares o planeamiento didáctico / Evaluación alternativa. Competencias digitales docentes / Competencias en mediación pedagógica. Brecha tecnológica en las diferentes poblaciones UNED / Sistemas adaptativos.
Gravitational Wave Burst Source Direction Estimation using Time and Amplitude Information
Creators: name: Markowitz, J.
name: Zanolin, M.
name: Cadonati, L.
name: Katsavounidis, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this article we study two problems that arise when using timing and amplitude estimates from a network of interferometers (IFOs) to evaluate the direction of an incident gravitational wave burst (GWB). First, we discuss an angular bias in the least squares timing-based approach that becomes increasingly relevant for moderate to low signal-to-noise ratios. We show how estimates of the arrival time uncertainties in each detector can be used to correct this bias. We also introduce a stand alone parameter estimation algorithm that can improve the arrival time estimation and provide root-sum-squared strain amplitude (hrss) values for each site. In the second part of the paper we discuss how to resolve the directional ambiguity that arises from observations in three non co-located interferometers between the true source location and its mirror image across the plane containing the detectors. We introduce a new, exact relationship among the hrss values at the three sites that, for sufficiently large signal amplitudes, determines the true source direction regardless of whether or not the signal is linearly polarized. Both the algorithm estimating arrival times, arrival time uncertainties, and hrss values and the directional follow-up can be applied to any set of gravitational wave candidates observed in a network of three non co-located interferometers. As a case study we test the methods on simulated waveforms embedded in simulations of the noise of the LIGO and Virgo detectors at design sensitivity.
description: 10 pages, 14 figures, submitted to PRD
Spitzer spectral line mapping of protostellar outflows: I. Basic data and outflow energetics
Creators: name: Neufeld, David A.
name: Nisini, Brunella
name: Giannini, Teresa
name: Melnick, Gary J.
name: Bergin, Edwin A.
name: Yuan, Yuan
name: Maret, Sebastien
name: Tolls, Volker
name: Guesten, Rolf
name: Kaufman, Michael J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the results of spectroscopic mapping observations carried out toward protostellar outflows in the BHR71, L1157, L1448, NGC 2071, and VLA 1623 molecular regions using the Infrared Spectrograph (IRS) of the Spitzer Space Telescope. These observations, covering the 5.2 - 37 micron spectral region, provide detailed maps of the 8 lowest pure rotational lines of molecular hydrogen and of the [SI] 25.25 micron and [FeII] 26.0 micron fine structure lines. The molecular hydrogen lines, believed to account for a large fraction of the radiative cooling from warm molecular gas that has been heated by a non-dissociative shock, allow the energetics of the outflows to be elucidated. Within the regions mapped towards these 5 outflow sources, total H2 luminosities ranging from 0.02 to 0.75 L(solar) were inferred for the sum of the 8 lowest pure rotational transitions. By contrast, the much weaker [FeII] 26.0 micron fine structure transition traces faster, dissociative shocks; here, only a small fraction of the fast shock luminosity emerges as line radiation that can be detected with Spitzer/IRS.
description: 38 pages including 17 figures. Accepted for publication in ApJ
Разработка учебной операционной системы
Creators: name: Сообщество рецензентов Международного научно-исследовательского журнала
Publisher: name: ООО Цифра
Year: 2023
Subjects: operating system
core
build
interrupts
exceptions
операционная система
ядро
сборка
прерывания
исключения

description: Международный научно-исследовательский журнал, Выпуск 12 (138) 2023
Network-aware Adaptation with Real-Time Channel Statistics for Wireless LAN Multimedia Transmissions in the Digital Home
Creators: name: Krishnaswamy, Dilip
name: Zhao, Shanyu
Publisher: name: arXiv
Year: 2009
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This paper suggests the use of intelligent network-aware processing agents in wireless local area network drivers to generate metrics for bandwidth estimation based on real-time channel statistics to enable wireless multimedia application adaptation. Various configurations in the wireless digital home are studied and the experimental results with performance variations are presented.
description: 6 pages, 12 figures
Charge properties and ion selectivity of the rectal intima of the desert locust
Creators: name: Lewis, Simon Andrew
Publisher: name: University of British Columbia
Year: 2011

description: The rectal intima of the desert locust was found to possess fixed negative charges, rather than fixed neutral sites. It was suggested that the molecular species responsible for the negative sites might be acidic amino acids. The selective permeability of the intima as estimated from diffusion potentials, for divalent cations was 3a⁺² > Ca⁺² > Sr⁺² > Mg⁺² > Mn⁺², for monovalent cations was NH₄⁺ > Rb⁺ > Cs⁺ > K⁺ > Na⁺ > Li⁺ > TEA⁺ and for monovalent anions was HCO₃⁻ > CN⁻ > F⁻ > NO₃⁻ > CL⁻ > CH₃COO⁻ > Br⁻ > H₂PO₄⁻ > I⁻. Cation affinity for the fixed charged site was found to be in the order of Ca⁺² > Mg⁺⁺ » K⁺ > Na⁺. Similarity of effects of pH and ion concentration on streaming and diffusion potentials indicated that ion movement and water flow might take place through the same route. The intima was found to act as an osmotic compartment such that at high external osmotic pressures, the rate of water flow was reduced due to a shrinkage of the effective pore size in the intima, however the relative permeability of ions did not seem effected by membrane dehydration. Unstirred layers at the membrane-solution interfaces were found to have a minimal effect on diffusion potentials, however half of the value for streaming potentials was found to be due to a diffusion potential caused by an ion concentration difference in opposing unstirred layers. Calcium -45 flux across the intima at pH 5.5 (i.e. possessing fixed charge) was found to be 81 times greater, at a concentration of 10 mM/l CaCl₂, than calcium flux at the same concentration across the uncharged membrane (pH 2.2). The same effect was not significant for rubidium. Conversely, the removal of fixed charge enhanced anion flux. Calcium permeation rate was found to be a function of its dissociation rate from the fixed charge and did not correlate in a simple manner with the membrane binding capacity for calcium. A trans effect on calcium flux was also found in the intima and is believed to be a function of the dissociation rate of calcium from the fixed negative site. It was concluded that electro-osmosis was not the mode of water movement across the rectum, however physiological advantage of electro-osmosis was discussed. Flux experiments possible indicate that the intima might be the rate limiting step for K⁺ reabsorption in a hydrated animal.
Problems associated with the interconnection of electrical power systems.
Creators: name: Brooks, John Vickery
Publisher: name: University Of Tasmania
Year: 2023

description: Due to its continuing rapid growth and the already large capital expenditure involved, the electricity Supply Industry is a major factor, of increasing importance in National Economy. Complex technical problems have been solved successfully in relation to long distance transmission, higher efficiency of generating plant, protection, switching, indication, communication and control. While the limits of technical development have not yet been reached, and the day to day application of existing techniques is necessary; the standardisation of specifications and designs for many individual items of plant and even for extensible generating, terminal, and distribution stations is practicable. The financial and operational benefits of standardisation of this kind are becoming more generally recognised and adopted.
Influence of random roughness on cantilever curvature sensitivity
Creators: name: Ergincan, O.
name: Palasantzas, G.
name: Kooi, B. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work we explore the influence of random surface roughness on the cantilever sensitivity to respond to curvature changes induced by changes in surface stress. The roughness is characterized by the out-of-plane roughness amplitude w, the lateral correlation length x, and the roughness or Hurst exponent H (0
description: 10 pages, 3 figures
D2.4 Guidelines on legal and ethical issues
Creators: name: Maroulla Schiza
Publisher: name: Zenodo
Year: 2021

description: In all EU Horizon projects, ethics and ethical compliance is an integral part of research. The ethical evaluation starts from the proposal phase and carries on throughout the project implementation. Ethical research conduct relative to the applicable legal framework is also significant for the quality and afterlife of research results.
 Task 2.4 looks into the Ethical and privacy issues of the ENVISON project. This deliverable, D2.4 Guidelines on legal and ethical issues, will include the ethical considerations and legal restrictions of data used in ENVISION, as well as moral considerations regarding the use of human subjects in project activities. Τhis task will be completed with D2.5 Privacy Risk Assessment for ENVISION, which will comprise a risk log that summarises the main identified privacy risks, to provide a secure and safe environment for collecting, sharing and consulting personal data.
 The deliverable at hand presents in Chapter 2 the ethical and relevant legal framework to the ENVISION project. Moreover, in Chapter 3 an Analysis of ethical and legal restrictions of data and decision-making processes used in ENVISION is presented. Chapter 4 presents the guidelines on decision-making processes relevant to critical issues and finally, Chapter 5 examines the Considerations of post-project exploitation.
Elegant vector normal modes at a dielectric interface
Creators: name: Nasalski, Wojciech
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Reflection and transmission of narrow beams at a dielectric interface is analysed. It is confirmed that for arbitrary incidence two types of beams - Elegant Hermite-Gaussians of linear polarization and Elegant Laguerre-Gaussians of circular polarization, both defined in the interface plane - can be treated as vector normal modes of the interface. Excitation of higher-order modes by cross-polarization coupling is described by changes of mode indices induced by generalised transmission and reflection matrices. It is explicitly shown that, off-axis in general, spectral placements of the excited optical vortices are determined by elements of these matrices, depended in turn on beam incidence. Numerical simulations of beam reflection entirely confirm theoretical predictions. The current paper is a continuation and extension of a previous work by W. Nasalski [Phys. Rev. E 74, 056613 (2006)].
description: 28 pages, 7 figures
ВЛИЯНИЕ ГЕОМАГНИТНЫХ ВОЗМУЩЕНИЙ НА ПЛАЗМЕННЫЕ КОМПОНЕНТЫ СИСТЕМЫ ГЕМОСТАЗА У БЕРЕМЕННЫХ ЖЕНЩИН
Creators: name: Ефременко, Евгений
Publisher: name: ООО Цифра
Year: 2023
Subjects: blood
geomagnetic activity
pregnant women
Kp-index
кровь
геомагнитная активность
беременные женщины
Кр-индекс

description: Международный научно-исследовательский журнал, Выпуск 12 (138) 2023
Differential chemical abundance analysis of a 47 Tuc AGB star with respect to Arcturus
Creators: name: Worley, C. C.
name: Cottrell, P. L.
name: Freeman, K. C.
name: Boer, E. C. Wylie-de
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This study resolves a discrepancy in the abundance of Zr in the 47 Tucanae asymptotic giant branch star Lee 2525. This star was observed using the echelle spectrograph on the 2.3 m telescope at Siding Spring Observatory. The analysis was undertaken by calibrating Lee 2525 with respect to the standard giant star Arcturus. This work emphasises the importance of using a standard star with stellar parameters comparable to the star under analysis rather than a calibration with respect to the Sun (Koch & McWilliam 2008). Systematic errors in the analysis process are then minimised due to the similarity in atmospheric structure between the standard and programme stars. The abundances derived for Lee 2525 were found to be in general agreement with the Brown & Wallerstein (1992) values except for Zr. In this study Zr has a similar enhancement ([Zr/Fe] = +0.51 dex) to another light s-process element, Y ([Y/Fe] = +0.53 dex), which reflects current theory regarding the enrichment of s-process elements by nuclear processes within AGB stars (Busso et al. 2001). This is contrary to the results of Brown & Wallerstein (1992) where Zr was under-abundant ([Zr/Fe] = +0.51 dex) and Y was over-abundant ([Y/Fe] = +0.50 dex) with respect to Fe.
description: 11 pages, 5 figures Accepted for publication in MNRAS
Additional file 1 of Low dissolved oxygen supply functions as a global regulator of the growth and metabolism of Aurantiochytrium sp. PKU#Mn16 in the early stages of docosahexaenoic acid fermentation
Creators: name: Liu, Lu
name: Zhu, Xingyu
name: Ye, Huike
name: Wen, Yingying
name: Sen, Biswarup
name: Wang, Guangyi
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Comparison of the fermentation parameters of Aurantiochytrium sp. PKU#Mn16 under different dissolved oxygen levels. Table S2. Annotation summary of de novo assembled unigenes. Table S3. Differentially-expressed genes in various metabolic pathways between 10% and 30% oxygen saturation levels. Figure S1. Feeding regime for the variable-volume fed-batch culture to evaluate the effects of different oxygen saturation levels (10%, 30%, and 50%) on growth and lipid production of PKU#Mn16 strain. The arrows indicate the point of feeding. Figure S2. The profiles of TFA production rates of PKU#Mn16 culture under different oxygen saturation levels. Rate was calculated by dividing the difference in TFA concentration by the change in time between two consecutive data. Figure S3. Bar plot of major fatty acids produced by PKU#Mn16 strain under different oxygen saturation levels (10% and 30%). C15, C16, DPA, DHA, and TFA stand for pentadecanoic acid, palmitic acid, docosapentaenoic acid, docosahexaenoic acid, and total fatty acids, respectively. Figure S4. Sequence length distribution of transcripts and unigenes
How loopy is the quantum bounce? A heuristic analysis of higher order holonomy corrections in LQC
Creators: name: Chiou, Dah-Wei
name: Li, Li-Fang
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A well-motivated extension of higher order holonomy corrections in loop quantum cosmology (LQC) for the $k=0$ Friedmann-Robertson-Walker model is investigated at the level of heuristic effective dynamics. It reveals that the quantum bounce is generic, regardless of the order of corrections, and the matter density remains finite, bounded from above by an upper bound in the regime of the Planckian density, even if all orders of corrections are included. This observation provides further evidence that the quantum bounce is essentially a consequence of the loopy nature (i.e. intrinsic discreteness) of LQC and LQC is fundamentally different from the Wheeler-DeWitt theory; it also encourages one to construct the quantum theory of LQC with the higher order holonomy corrections, which might be understood as related to the higher $j$ representations in the Hamiltonian operator of loop quantum gravity.
description: 5 pages, 1 figure; more remarks and references added; version to appear in PRD