cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Doping dependence of charge-transfer excitations in La_{2-x}Sr_xCuO_4
Creators: name: Kim, Young-June
name: Hill, J. P.
name: Komiya, Seiki
name: Ando, Yoichi
name: Casa, D.
name: Gog, T.
name: Venkataraman, C. T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report a resonant inelastic x-ray scattering (RIXS) study of the doping dependence of charge-transfer excitations in $\rm La_{2-x}Sr_xCuO_4$. The mome ntum dependence of these charge excitations are studied over the whole Brillouin zone in underdoped (x=0.05) and optimally doped (x=0.17) samples, and compared with that of the undoped (x=0) sample. We observe a large change in the RIXS spectra between the x=0 and x=0.17 sample, while the RIXS spectra of the x=0.05 sample are similar to that of the x=0 sample. The most prominent effect of doped-holes on the charge excitation spectra is the appearance of a continuum of intensity, which exhibits a strong momentum-dependence below 2 eV. For the x=0.17 sample, some of the spectral weight from the lowest-lying charge-transfer excitation of the undoped compound is transferred to the continuum intensity below the gap, in agreement with earlier optical studies. However, the higher energy charge-transfer excitation carries significant spectral weight even for the x=0.17 sample. The doping dependence of the dispersion of this charge-transfer excitation is also discussed and compared with recent theoretical calculations.
description: 7 pages, 6 figures, to appear in Phys. Rev. B
'N NORMATIEWE ONTLEDING VAN DIE VRAAG NA GEELMIELIES IN SUID-AFRIKA
A normative demand analysis of yellow maize in South Africa
Creators: name: Potgieter, P. J.
name: Van Zyl, J.
name: Potgieter, P. J.
name: Van Zyl, J.
Publisher: name: Unknown
Year: 1991
Subjects: Crop Production/Industries
Demand and Price Analysis

description: The demand for yellow maize was analysed using a normative approach. Cost minimizing behaviour of compound feed manufacturers was modelled in a linear programming formulation. The model formulates specific quantities of 14 different poultry-, pig-, cattle-, and sheep rations on a minimum cost basis. A wide variety of local and international feed sources were considered for inclusion in the rations. Prices, the availability and quality of each feed, the inclusion of specific feed sources in a ration and the consumption of each ration could be allowed to vary independently. Price elasticities of demand for yellow maize were estimated after the price of maize was increased parametrically. Substantial differences in maize demand price elasticities for the different livestock enterprises were found. A relaxation of feed importation restrictions showed a significant increase in the price sensitivity of yellow maize and resulted in a decline in the market share of South African yellow maize in the livestock feed market. Policy implications are highlighted. Suggestions for further analyses that are possible via the model are also presented.
title: A Prospective, Randomized Study to Compare the Effect of Combination Therapy With Campath-1H on Peripheral Blood Mononuclear Cells in Kidney Transplant Recipients
Creators: name: Cravedi, Paolo
Publisher: name: The Open University
Year: 2009

description: Induction therapy with Campath-1H, a humanized anti-CD52 monoclonal antibody depleting T and B lymphocytes, has been used in organ transplantation with the final goal of resetting the immune system in order to promote a tolerance-permissive environment and, at the same time, to reduce the need for chronic maintenance immunosuppression. To explore whether thisO may result from the capability of Campath-1H, in association with different maintenance regimens, to promote regulatory T cells (Treg) expansion and to assess whether this may translate into better graft outcomes in the long-term, 21 renal transplant patients receiving Campath-1H induction were randomized to low-dose SRL (n=11) or low-dose CsA (n=10), both in addition to low-dose mycophenolate mofetil (MMF) as maintenance immunosuppressive therapy and monitored for over 30 month follow-up.

SRL-treated patients showed an important expansion of circulating CD4+CD25highFOXP3+ Treg that, at one and two years after transplant, were significantly more abundant than in the CsA group. T cells isolated from peripheral blood long-term post-transplant were hyporesponsive to donor alloantigens in both treatment arms. In SRL-, but not CsA-treated patients, hyporesponsiveness was reversed by Treg depletion. T cells from CsA-treated patients were anergic to donor antigens. Despite higher Treg counts, SRL-treated patients had a faster GFR and RPF decline, more clinical proteinuria, significantly higher tubular C4d staining score and a trend to higher chronic allograft damage index score, compared to CsA-treated patients. There was no significant correlation between Treg counts and any considered outcome variable in the study group as a whole and within each treatment group.

These data suggest that, after Campath-1H induction, maintenance therapy with low-dose SRL and MMF promotes Treg expansion, but this is not paralleled by long-term improved graft outcomes. Conversely, maintenance immunosuppression with low-dose CsA and MMF is associated with better graft function and structure than low-dose SRL plus MMF, possibly through the induction of T cell anergy toward donor antigens.
Lattice dynamics and spin-phonon interaction in strained NiO films
Creators: name: Kashir, Alireza
name: Goian, Veronica
name: Yoon, Daseob
name: Cho, Byeong-Gwan
name: Jeong, Yoon Hee
name: Lee, Gil-Ho
name: Kamba, Stanislav
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: NiO thin films with various strains were grown on SrTiO3 (STO) and MgO substrates using a pulsed laser deposition technique. The films were characterized using an x-ray diffractometer, atomic force microscopy, and infrared reflectance spectroscopy. The films grown on STO (001) substrate show a compressive in-plane strain which increases as the film thickness is reduced, resulting in an increase of the NiO phonon frequency. On the other hand, a tensile strain was detected in the NiO film grown on MgO (001) substrate which induces a softening of the phonon frequency. Overall, the variation of in-plane strain from -0.36% to +0.48% yields the decrease of the phonon frequency from 409.6 cm-1 to 377.5 cm-1 which occurs due to the ~1% change of the inter-atomic distances. The magnetic exchange -driven phonon splitting Delta(W) in three different sample, with relaxed (i.e. zero) strain, 0.36% compressive and 0.48% tensile strain was measured as a function of temperature. The Delta(W) increases on cooling in NiO relaxed film as in the previously published work on a bulk crystal. The splitting increases on cooling also in 0.48% tensile strained film, but Delta(W) is systematically 3-4 cm-1 smaller than in relaxed film. Since the phonon splitting is proportional to the non-dominant magnetic exchange interaction J1, the reduction of phonon splitting in tensile-strained film was explained by a diminishing J1 with lattice expansion. Increase of Delta(W) on cooling can be also explained by rising of J1 with reduced temperature.
Agrilus puniceus Kerremans 1897
Creators: name: Curletti, Gianfranco
name: Migliore, Letizia
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Agrilus
Agrilus puniceus

description: Agrilus puniceus Kerremans, 1897
 Agrilus puniceus Kerremans, 1897: 117.
 Material examinado: BRASIL, Pará, Canindé (Rio Gurupì), 1 ex., XII.1964, B. Malkin leg.
description: Published as part of Curletti, Gianfranco & Migliore, Letizia, 2014, O gênero Agrilus Curtis, 1829 nas coleções do Museu de Zoologia da Universidade de São Paulo (Coleoptera: Buprestidae), pp. 81-106 in Papéis Avulsos de Zoologia (São Paulo) (São Paulo) 54 (8) on page 95, DOI: 10.1590/0031-1049.2014.54.08, http://zenodo.org/record/4656297
Mediated interactions and photon bound states in an exciton-polariton mixture
Creators: name: Camacho-Guardian, A.
name: Bastarrachea-Magnani, M.
name: Bruun, G. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quest to realise strongly interacting photons remains an outstanding challenge both for fundamental science and for applications. Here, we explore mediated photon-photon interactions in a highly imbalanced two-component mixture of exciton-polaritons in a semiconductor microcavity. Using a theory that takes into account non-perturbative correlations between the excitons as well as strong light-matter coupling, we demonstrate the high tunability of an effective interaction between quasiparticles formed by minority component polaritons interacting with a Bose-Einstein condensate (BEC) of a majority component polaritons. In particular, the interaction, which is mediated by the exchange of sound modes in the BEC can be made strong enough to support a bound state of two quasiparticles. Since these quasiparticles consist partly of photons, this in turn corresponds to a dimer state of photons propagating through the BEC. This gives rise to a new light transmission line where the bound state wave function is directly mapped onto correlations between outgoing photons. Our findings open up new routes for realising highly non-linear optical materials and novel hybrid light-matter quantum systems.
description: 9 pages, 4 figures
Probing the equation of state with pions
Creators: name: Li, Qingfeng
name: Li, Zhuxia
name: Soff, Sven
name: Bleicher, Marcus
name: Stoecker, Horst
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The influence of the isospin-independent, isospin- and momentum-dependent equation of state (EoS), as well as the Coulomb interaction on the pion production in intermediate energy heavy ion collisions (HICs) is studied for both isospin-symmetric and neutron-rich systems. The Coulomb interaction plays an important role in the reaction dynamics, and strongly influences the rapidity and transverse momentum distributions of charged pions. It even leads to the $π^-/π^+$ ratio deviating slightly from unity for isospin-{\it symmetric} systems. The Coulomb interaction between mesons and baryons is also crucial for reproducing the proper pion flow since it changes the behavior of the directed and the elliptic flow components of pions visibly. The EoS can be better investigated in neutron-rich system if {\it multiple} probes are measured simultaneously. For example, the rapidity and the transverse momentum distributions of the charged pions, the $π^-/π^+$ ratio, the various pion flow components, as well as the {\it difference} of $π^+$-$π^-$ flows. A new sensitive observable is proposed to probe the symmetry potential energy at high densities, namely the transverse momentum distribution of the elliptic flow difference [$Δv_2^{π^+ - π^-}(p_t^{\rm c.m.})$].
description: 21 pages, 10 figs, 1 table, submitted to Phys. Rev. C
SLEDOVANIE NAKLADOV NA ZABEZPECENIE A ZVYSOVANIE KVALITY POTRAVIN
MONITORING OF COSTS FOR ENSURING AND INCREASE OF FOOD QUALITY
Creators: name: SKORECOVA, Emilia
name: SUPEKOVA, Sona
name: SKORECOVA, Emilia
name: SUPEKOVA, Sona
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural Finance
subject: Demand and Price Analysis
subject: quality management
subject: food quality
subject: costs for ensuring of quality
subject: financial accounting
subject: managerial accounting

description: This paper is focused on application of principles of the quality management system in the area of food quality with particular respect to create information base about the costs expended on quality assurance. There are processed the results of the research conducted by the Department of Information Systems of the Slovak Agricultural University and the Food Research Institute in Bratislava, namely its Department of Quality. The structure of costs of the system of food quality management was studied in the following areas: application the system of food quality management, production of food-stuffs, store spaces and storing of products, transport of raw material and products, research and development, laboratory control etc. There is stated the possibility of detailed monitoring of costs for ensuring the production quality in managerial accounting by basic form of costs, and also the possibility to put on their normative value into in-house prices of production in the responsibility accounting. The results of the research and monitoring these costs in 35 chosen companies are presented.
Long period Ap stars discovered with TESS data
Creators: name: Mathys, Gautier
name: Kurtz, Donald W.
name: Holdsworth, Daniel L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The TESS space mission is producing superb data for asteroseismology, eclipsing binary stars, gyrochronology, and other fields of stellar astronomy where the data are variable light curves. We show that TESS data are excellent for astrophysical inference from peculiar stars that show variability. The Ap stars have the strongest magnetic fields of any main-sequence stars. Some have been shown to have rotation periods of months to centuries. The astrophysical cause of their slow rotation -- the braking mechanism -- is not known with certainty. These stars are rare: there are currently about 3 dozen with known periods. The magnetic Ap stars have long-lived spots that allow precise determination of their rotation periods. We show that most Ap stars with TESS data that show no low-frequency variability must have rotation periods longer than a TESS sector of 27 d. We find 60 Ap stars in the southern ecliptic hemisphere TESS data with no rotational variability, of which at most a few can be pole-on, and six likely have nearly aligned magnetic and rotation axes. Of the other 54, 31 were previously known to have long rotation periods or low projected equatorial velocities, which proves our technique; 23 are new discoveries. These are prime targets for long-term magnetic studies. We also find that 22 per cent of long-period Ap stars are roAp stars, versus only 3 per cent of the other Ap stars studied with TESS sector 1 and 2 data. This work demonstrates astrophysical inference from nonvariable stars -- "something for nothing".
description: Accepted for publication in A&A; 19 pages, 11 figures
KVANTIFIKACIA VYBRANYCH UKAZOVATELOV UDRZATELNEHO ROZVOJA RASTLINNEJ VYROBY
QUANTIFICATION OF SELECTED INDICATORS OF SUSTAINABLE DEVELOPMENT IN VEGETABLE PRODUCTION
Creators: name: PROKEINOVA, Renata
name: HANOVA, Martina
name: PROKEINOVA, Renata
name: HANOVA, Martina
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: cological footprint
subject: sustainable development
subject: global hectare
subject: cereals

description: The concept of sustainable development in its fundamental features has become one of the basic perspective global attitudes accepted by all developed and transforming countries of the world, as well as supranational organizations. The realization of the aim is based on the sustainability of Slovakia by using Ecological Footprint, followed by the comparison with the countries of the European Union, and quantification of the Ecological Footprint of the crop production in Slovakia. The paper focuses on the group of main farming crop products - cereals within the limits of plant production. From the viewpoint of the Ecological Footprint it can be stated that the biocapacity of the plant production in Slovakia is not exceeded. In 2006 the value of the Ecological Footprint was 0.28 of a global hectare and the biocapacity was 0.36 of a global hectare.
HUMAN TRANSFORMATION AND THE ART OF LIVING
L'UDSKA TRANSFORMACIA A UMENIE ZIVOTA
Creators: name: KAUL, Arpita
name: KAUL, Arpita
Publisher: name: Unknown
Year: 2010
Subjects: subject: Community/Rural/Urban Development
subject: Consumer/Household Economics
subject: human transformation
subject: spiritual quotient
subject: art of living

description: Human transformation or spirituality are aspects which are very difficult to measure as the concept in itself is confusing and complex. Spiritual matters are those matters regarding 's ultimate and purpose, not only as material biological organisms, but as beings with a unique relationship to that which is perceived to be beyond both and the material world. Nowadays people are so busy in running after money that they miss the small beautiful moments of life. People are running towards an end which they themselves are not clear about and in the process they forget enjoying the journey. Life is a journey but no one cares about the journey but about the destination. Many organizations are trying to transform humans into spiritually developed beings and one of such organization is The Art of Living. It is a multi-faceted not-for-profit educational and humanitarian NGO with a presence in over 140 countries. It is engaged in diverse initiatives aimed at uplifting humanity by bringing peace at the level of the individual, society, nation and the world as a whole. This paper is an attempt to quantify the change in the people who do Art of Living Course. A Spiritual Quotient Questionnaire has been used to quantify the change. It has been found that 4 days workshop which includes knowledge sessions, Sudarshan Kriya, Yoga, Music, dance, activities and interactive sessions completely transforms the outlook of people towards life.
The wave equation on the Schwarzschild metric II: Local decay for the spin 2 Regge Wheeler equation
Creators: name: Blue, P.
name: Soffer, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Odd-type spin 2 perturbations of Einstein's equation can be reduced to the scalar Regge-Wheeler equation. We show that the weighted norms of solutions are in L^2 of time and space. This result uses commutator methods and applies uniformly to all relevant spherical harmonics.
description: AMS-LaTeX, 8 pages with 1 figure. There is an errata to this paper at gr-qc/0608073
Agrilus raphelisi Obenberger 1923
Creators: name: Curletti, Gianfranco
name: Migliore, Letizia
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Agrilus
Agrilus raphelisi

description: Agrilus raphelisi Obenberger, 1923
 Agrilus raphelisi Obenberger, 1923a: 78.
 Material examinado: AUSTRÁLIA, New South Wales, 2 exs., 04.XI.1951.
description: Published as part of Curletti, Gianfranco & Migliore, Letizia, 2014, O gênero Agrilus Curtis, 1829 nas coleções do Museu de Zoologia da Universidade de São Paulo (Coleoptera: Buprestidae), pp. 81-106 in Papéis Avulsos de Zoologia (São Paulo) (São Paulo) 54 (8) on page 96, DOI: 10.1590/0031-1049.2014.54.08, http://zenodo.org/record/4656297
ECOLOGICAL CONSTITUENT OF BIOFUEL USE: ECONOMIC ASPECT
EKONOMICKE HL'ADISKO EKOLOGICKEJ ZLOZKY VYUZITIA BIOPALIV
Creators: name: KALETNIK, Grygoriy
name: KALETNIK, Grygoriy
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: bioenergy
subject: raw biomaterial
subject: biomass
subject: renewed energy sources
subject: greenhouse gases
subject: emission of greenhouse gases

description: he state of ecology in Ukraine and world and the impact of emissions from the use of mineral and biological types of fuel on the environment are briefly analysed in the given article. Comparisons are carried out and some conclusions concerning the state of bioenergy development and its influence on the environment are made.
Agrilus consularis Kerremans 1897
Creators: name: Curletti, Gianfranco
name: Migliore, Letizia
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Agrilus
Agrilus consularis

description: Agrilus consularis Kerremans, 1897
 Agrilus consularis Kerremans, 1897: 105.
 Material examinado: BRASIL, São Paulo, São Paulo (Santo Amaro), 1 ex., XI.1951, Dirings leg.
description: Published as part of Curletti, Gianfranco & Migliore, Letizia, 2014, O gênero Agrilus Curtis, 1829 nas coleções do Museu de Zoologia da Universidade de São Paulo (Coleoptera: Buprestidae), pp. 81-106 in Papéis Avulsos de Zoologia (São Paulo) (São Paulo) 54 (8) on page 87, DOI: 10.1590/0031-1049.2014.54.08, http://zenodo.org/record/4656297
CLUSTER - A PERSPECTIVE FORM OF AGRARIAN PRODUCTION IN REGION
KLASTER - PERSPEKTIVNA FORMA POL'NOHOSPODARSKEJ VYROBY V REGIONE
Creators: name: VORONYANSKA, Olena
name: BEREZHETSKY, Oleksandr
name: VORONYANSKA, Olena
name: BEREZHETSKY, Oleksandr
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: agro-industrial formations
subject: clusters
subject: horizontal integration
subject: vertical integration
subject: cooperation
subject: small-scale enterprises
subject: medium-scale enterprises
subject: large-scale enterprises
subject: competitive advantages

description: In this paper the approaches to identification of clusters as consolidation of enterprises according to the vertical and horizontal principles are generalized. The classification and main advantages of such new formation are given and a range of problems to be worked over within territorial and branch clusters is determined.
title: Studies on the Inter-Cellular Communication Mechanisms in the Rice Bacterial Pathogens Xanthomonas oryzae pv. oryzae and Pseudomonas fuscovaginae
Creators: name: Ferluga, Sara
Publisher: name: The Open University
Year: 2008

description: The most common quorum sensing (QS) system in Gram-negative bacteria employs N-acyl homoserine lactones (AHLs) as signal molecule. AHLs allow bacteria to monitor their cell density being commonly used to synchronize/coordinate the expression of virulence-associated factors in a community. An AHL QS system is most commonly mediated by two proteins belonging to the LuxI-AHL synthase and to LuxR-AHL response regulator protein families. AHLs interact directly at quorum concentration with the cognate LuxR-type protein which then binds at QS target gene promoters affecting their transcription. The purpose of this thesis was to investigate the QS systems based on AHL signal molecules in two important bacterial rice pathogens: Xanthomonas oryzae pv. oryzae (Xoo) and Pseudomonas fuscovaginae. Studies revealed that Xoo does not produce AHLs and does not possess a luxI AHL synthase gene; it does have however an unpaired luxR-homolog gene closely related to QS luxR family genes which was designated oryR. OryR was demonstrated to be involved in inter-kingdom signalling by binding an unknown rice signal molecule (RSM) and affecting bacterial gene expression. The concentration of the RSM increases in rice when it is infected with Xoo possibly meaning that it is involved in a response to pathogen attack. RSM does not bind canonical LuxR-family proteins and is not related to AHLs. It was concluded that OryR is not involved in bacterial QS but in inter-kingdom signalling by recognizing and responding to a molecule present in rice. Studies in P. fuscovaginae revealed that it possesses a typical AHL QS system, designated Pfvl/R, highly conserved within the species and highly similar to the Lasl/R and Ppul/R QS systems present in Pseudomonas aeruginosa and Pseudomonas putida respectively. The Pfvl/R QS system was shown to be involved in virulence, to be important for the hypersensitivity response in non-host plants and for bacterial motility.
A tale of two sites -- I: Inferring the properties of minihalo-hosted galaxies from current observations
Creators: name: Qin, Yuxiang
name: Mesinger, Andrei
name: Park, Jaehong
name: Greig, Bradley
name: Muñoz, Julian B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The very first galaxies that started the cosmic dawn likely resided in so-called "minihaloes", with masses of $\sim10^5$-$10^8\mathrm{M}_\odot$, accreting their gas from the intergalactic medium through H$_2$ cooling. Such molecularly cooled galaxies (MCGs) mostly formed in pristine environments, hosted massive, metal-free stars, and were eventually sterilized by the build-up of a disassociating (Lyman-Werner; LW) background. Therefore, their properties might be very different from the galaxies we see in the later Universe. Although MCGs are probably too faint to be observed directly, we could nevertheless infer their properties from the imprint they leave in the cosmic 21-cm signal. Here we quantify this imprint by extending the public simulation code 21cmFAST to allow for a distinct population of MCGs. We allow MCGs to have different properties from other galaxies, including unique scaling relations for their stellar-to-halo mass ratios, ionizing escape fractions, and spectral energy distributions. We track inhomogeneous recombinations, disassociative LW feedback, and photoheating from reionization. After demonstrating how MCGs can shape the 21-cm signal, we explore to what extent current observations can already place constraints on their properties. The cosmic microwave background optical depth from Planck sets an upper limit on the product of the ionizing escape fraction and the stellar mass in MCGs. When including also the timing of the putative EDGES absorption signal, we find an additional strong degeneracy between the stellar mass and the X-ray luminosity of MCGs. If proven to be of cosmic origin, the timing of the EDGES signal would have been set by MCGs.
description: 19 pages, 8 figures, 1 table; Updated to match the published version. Only minor changes
Instantons and the Spin of the Nucleon
Creators: name: Schaefer, T.
name: Zetocha, V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Motivated by measurements of the flavor singlet axial coupling constant of the nucleon in polarized deep inelastic scattering we study the contribution of instantons to OZI violation in the axial-vector channel. We consider, in particular, the f_1-a_1 meson splitting, the flavor singlet and triplet axial coupling of a constituent quark, and the axial coupling constant of the nucleon. We show that instantons provide a short distance contribution to OZI violating correlation functions which is repulsive in the f_1 meson channel and adds to the flavor singlet three-point function of a constituent quark. We also show that the sign of this contribution is determined by positivity arguments. We compute long distance contributions using numerical simulations of the instanton liquid. We find that the iso-vector axial coupling constant of a constituent quark is (g_A^3)_Q=0.9 and that of a nucleon is g_A^3=1.28, in good agreement with experiment. The flavor singlet coupling of a quark is close to one, while that of a nucleon is suppressed, g_A^0=0.77. However, this number is larger than the experimental value g_A^0=(0.28-0.41).
description: 36 pages, 16 figures, revised version (references added)
DETERMINANTS OF COMPETITIVENESS OF FRUIT PRODUCTION IN SLOVAKIA
DETERMINANTY KONKURENCIESCHOPNOSTI VYROBY OVOCIA NA SLOVENSKU
Creators: name: PORHAJAS, Viktor
name: GURCIK, L'ubomir
name: ADAMICKOVA, Izabela
name: PORHAJAS, Viktor
name: GURCIK, L'ubomir
name: ADAMICKOVA, Izabela
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: determinants
subject: production potential
subject: price
subject: consumption
subject: cost
subject: competitive

description: This paper deals with current issues of the most important determinants of competitiveness of fruit production in Slovakia. The economic analysis of Slovak fruit growing was based on the yield per hectare, the production systems, the costs, and the targets of performance.Total production of selected kinds of fruit was analyzed in detail, and the yields per hectare were compared with those of the EU producers. The analysis of the real costs of each type of fruit was done with the aim to find the most profitable fruit. Considerable attention was paid to the competitiveness of Slovak fruit within the EU. To ensure competitiveness of fruit it is necessary to acknowledge crucial influence of building modern irrigation systems and introducing new resistant varieties of fruit. Fruit development in Slovakia is well-founded in terms of production skills and traditions of fruit growing.
CQuest Carbon Sequestration Initiatives for Alex Fraser Research Forest: Business and Management Plans
Creators: name: Capitulo, Felix
name: Cameron, Graham
name: Lewynsky, Martin
name: Hsu, Timothy
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Radiative generation of neutrino masses in a 3-3-1 type model
Creators: name: Das, Arindam
name: Enomoto, Kazuki
name: Kanemura, Shinya
name: Yagyu, Kei
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A new model for tiny neutrino masses is proposed in the gauge theory of $SU(3)_C \otimes SU(3)_L \otimes U(1)_X$, where neutrino masses are generated via the quantum effect of new particles. In this model, the fermion content is taken to be minimal to realize the gauge anomaly cancellation, while the scalar sector is extended from the minimal 3-3-1 model to have an additional $SU(3)_L$ triplet field. After $SU(3)_L\otimes U(1)_X$ is broken into $SU(2)_L\otimes U(1)_Y$, the "Zee model" like diagrams are naturally induced, which contain sufficient lepton flavor violating interactions to reproduce current neutrino oscillation data. Furthermore, the remnant $Z_2$ symmetry appears after the electroweak symmetry breaking, which guarantees the stability of dark matter. It is confirmed that this model can satisfy current dark matter data. As an important prediction to test this model, productions and decays of doubly-charged scalar bosons at collider experiments are discussed in successful benchmark scenarios.
description: 35 pages, 8 figures, 4 tables; Version published in Phys. Rev. D
Axial-vector form factors of the nucleon within the chiral quark-soliton model and their strange components
Creators: name: Silva, Antonio
name: Kim, Hyun-CHul
name: Urbano, Diana
name: Goeke, Klaus
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate three different axial-vector form factors of the nucleon, $G_A^{0}$, $G_A^3$, $G_A^8$, within the framework of the SU(3) chiral quark-soliton model, emphasizing their strangeness content. We take into account the rotational $1/N_c$ and linear strange quark ($m_s$) contributions using the symmetry-conserving SU(3) quantization and assuming isospin symmetry. The strange axial-vector form factor is also obtained and they all are discussed in the context of the parity-violating scattering of polarized electrons off the nucleon and its relevance to the strange vector form factors.
description: 13 pages, 4 figures
Age-related adverse events of disease-modifying treatments for multiple sclerosis
Creators: name: Prosperini, Luca
Publisher: name: figshare
Year: 2020
Subjects: Health Care

description: Protocol for a meta-analysis with meta-regression of randomized clinical trials.

Our work hypothesis is that increasing age is associated with increased risk of opportunistic infections and neoplasms in patients with multiple sclerosis under disease-modifying treatments.
Holistic Slowdown Driven Scheduling and Resource Management for Malleable Jobs
Creators: name: D'Amico, Marco
name: Jokanovic, Ana
name: Corbalan, Julita
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: In job scheduling, the concept of malleability has been explored since many years ago. Research shows that malleability improves system performance, but its utilization in HPC never became widespread. The causes are the difficulty in developing malleable applications, and the lack of support and integration of the different layers of the HPC software stack. However, in the last years, malleability in job scheduling is becoming more critical because of the increasing complexity of hardware and workloads. In this context, using nodes in an exclusive mode is not always the most efficient solution as in traditional HPC jobs, where applications were highly tuned for static allocations, but offering zero flexibility to dynamic executions. This paper proposes a new holistic, dynamic job scheduling policy, Slowdown Driven (SD-Policy), which exploits the malleability of applications as the key technology to reduce the average slowdown and response time of jobs. SD-Policy is based on backfill and node sharing. It applies malleability to running jobs to make room for jobs that will run with a reduced set of resources, only when the estimated slowdown improves over the static approach. We implemented SD-Policy in SLURM and evaluated it in a real production environment, and with a simulator using workloads of up to 198K jobs. Results show better resource utilization with the reduction of makespan, response time, slowdown, and energy consumption, up to respectively 7%, 50%, 70%, and 6%, for the evaluated workloads.
Brightness suppression of relativistic radio jets of quasars: The role of the lower electron energy cut-off
Creators: name: Gopal-Krishna
name: Biermann, Peter L.
name: Wiita, Paul J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Although the possibility of a low energy cut-off (LEC) of the relativistic electron population (E_{min} ~ 0.1 GeV) in the different components of radio galaxies has been discussed in the literature, from both theoretical and observational viewpoints, its possible role in causing a distinct spectral flattening, and thus reducing the apparent brightness temperature of the radio nucleus, has thus far not been explicitly discussed. Here we point out that such an effect may in fact be quite significant for the parsec-scale, superluminal emission regions associated with the inner radio jets. This is because the observed frequency of the spectral turnover arising from the LEC increases linearly with the bulk Doppler factor (δ) of the jet flow, whereas the frequency of synchrotron self-absorption (the well known cause of spectral flattening and turnover at low frequencies) shows a mild decrease as δrises. For an observationally relevant range of source parameters, we investigate here the role of the LEC. We argue that some statistical trends revealed by the recent VLBI surveys can in fact be understood in terms of effects arising from LEC, including the faster superluminal motion found in the VLBI surveys at higher frequencies, and the apparent inability of most radio cores to even attain the brightness temperatures consistent with the equipartition condition. We also point out some possible implications of the LEC for X-ray observations of the kiloparsec scale relativistic jets of quasars.
description: 5 pages, 1 figure, in press in ApJ Letters; grammar and copyediting changes only; now uses emulateapj.cls
title: An Investigation Into the Development of Professionalism Amongst Diagnostic Radiography Students
Creators: name: Whiting, Cheryl
Publisher: name: The Open University
Year: 2009

description: This research explores diagnostic radiography students’ perceptions of professionalism and how they learn and develop their understanding of what it means to be a professional. The research takes place at a time when advances in technology, expansion of roles, demands for public service (Hilton, 2004) and economic productivity (Bloor and Maynard, 2006) generate a multitude of competing professional expectations. BSc. (Hons) Radiography courses rely upon the clinical environment to support the development of professionalism. However, this often undermines professional development, offering its own hidden curriculum that contradicts what is taught within the academic environment (Satterwhite et al, 2000). Subsequently educators are urged to develop evidence based curricula that give attention to the context of practice and the hidden curriculum in order to ensure graduates emerge able to deal with the complexities of practice and espouse to a multidimensional professional ideology. This longitudinal study adopted a mixed method approach to gather quantitative and qualitative data and sought to establish what one cohort of undergraduate students knew about professionalism and how this came to be learnt as they journeyed through a year long clinical placement. An original Likert style questionnaire was created to assess attitudes towards a range of professional expectations. Over the course of the year, 18 participants completed 3 questionnaires. Although a repeated measure Multi-factorial Analysis of Variance revealed that mean attitude scores were overall positively orientated, a wide range of attitudes existed. No change in the strength of attitude or convergence was observed over time. Semi - structured interviews with ten participants supported the findings of the questionnaire and illustrated the dynamics of becoming a professional. The study showed how personal frames of reference and factors within the environment interrelated to destabilise progressive professional development by weakening some professional ideals and preserving a narrow professional identity centred on technical competence. A hidden curriculum of speed and efficiency created professionals orientated towards meeting the needs of self and the organisation rather than patients or the profession. It was concluded that professional development fell short of meeting expected requirements. The curriculum and the values and practices embedded within it did not transform personal perspectives of what it means to be a professional radiographer. There was disparity between the intended aims of the curriculum and the outcomes achieved. The findings provided an evidence base for purposeful curriculum revision that sought to attend to the apparent deficits of learning.
Superconductivity in CoO$_2$ Layers and the Resonating Valence Bond Mean Field Theory of the Triangular Lattice t-J model
Creators: name: Kumar, Brijesh
name: Shastry, B. Sriram
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Motivated by the recent discovery of superconductivity in two dimensional CoO$_2$ layers, we present some possibly useful results of the RVB mean field theory applied to the triangular lattice. Away from half filling, the order parameter is found to be complex, and yields a fully gapped quasiparticle spectrum. The sign of the hopping plays a crucial role in the analysis, and we find that superconductivity is as fragile for one sign as it is robust for the other. Na$_x$CoO$_2\cdot y$H$_2$O is argued to belong to the robust case, by comparing the LDA Fermi surface with an effective tight binding model. The high frequency Hall constant in this system is potentially interesting, since it is pointed out to increase linearly with temperature without saturation for T $>$ T$_{degeneracy}$.
description: Published in Physical Review B, total 1 tex + 9 eps files. Erratum added as separate tex file on November 7, 2003, a numerical factor corrected in the erratum on Dec 3, 2003
Reevaluation of the density dependence of nucleon radius and mass in the global color symmetry model of QCD
Creators: name: Liu, Yu-xin
name: Gao, Dong-feng
name: Zhou, Jian-hang
name: Guo, Hua
Publisher: name: arXiv
Year: 2003
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: With the global color symmetry model (GCM) at finite chemical potential, the density dependence of the bag constant, the total energy and the radius of a nucleon in nuclear matter is investigated. A relation between the nuclear matter density and the chemical potential with the action of QCD being taken into account is obtained. A maximal nuclear matter density for the existence of the bag with three quarks confined within is given. The calculated results indicate that, before the maximal density is reached, the bag constant and the total energy of a nucleon decrease, and the radius of a nucleon increases slowly, with the increasing of the nuclear matter density. As the maximal nuclear matter density is reached, the mass of the nucleon vanishes and the radius becomes infinite suddenly. It manifests that a phase transition from nucleons to quarks takes place.
description: 18 pages, 3 figures
Ion-Irradiation-Induced Cobalt/Cobalt Oxide Heterostructures: Printing 3D Interfaces
Creators: name: Yıldırım, Oğuz
name: Hilliard, Donovan
name: Arekapudi, Sri Sai Phani Kanth
name: Fowley, Ciarán
name: Cansever, Hamza
name: Koch, Leopold
name: Ramasubramanian, Lakshmi
name: Zhou, Shengqiang
name: Böttger, Roman
name: Lindner, Jürgen
name: Faßbender, Jürgen
name: Hellwig, Olav
name: Deac, Alina M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Interfaces separating ferromagnetic (FM) layers from non-ferromagnetic layers offer unique properties due to spin-orbit coupling and symmetry breaking, yielding effects such as exchange bias, perpendicular magnetic anisotropy, spin-pumping, spin-transfer torques, conversion between charge and spin currents and vice-versa. These interfacial phenomena play crucial roles for magnetic data storage and transfer applications, which require forming FM nano-structures embedded in non-ferromagnetic matrices. Here, we investigate the possiblity of creating such nano-structures by ion-irradiation. We study the effect of lateral confinement on the ion-irradiation-induced reduction of non-magnetic metal oxides (e.g., antiferro- or paramagnetic) to form ferromagnetic metals. Our findings are later exploited to form 3-dimensional magnetic interfaces between Co, CoO and Pt by spatially-selective irradiation of CoO/Pt multilayers. We demonstrate that the mechanical displacement of the O atoms plays a crucial role during the reduction from insulating, non-ferromagnetic cobalt oxides to metallic cobalt. Metallic cobalt yields both perpendicular magnetic anisotropy in the generated Co/Pt nano-structures, and, at low temperatures, exchange bias at vertical interfaces between Co and CoO. If pushed to the limit of ion-irradiation technology, this approach could, in principle, enable the creation of densely-packed, atomic scale ferromagnetic point-contact spin-torque oscillator (STO) networks, or conductive channels for current-confined-path based current perpendicular-to-plane giant magnetoresistance read-heads.
description: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials and Interfaces copyright \c{opyright} American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https:// pubs.acs.org/articlesonrequest/AOR-rPGr2e7nZ7tzzwK3tnBZ
NEW ECONOMY AND SOCIAL RESPONSIBILITY IN ENTREPRENEURSHIP IN PROCESSES OF ECONOMIC GLOBALIZATION
NOVA EKONOMIKA A SOCIALNA ZODPOVEDNOST PODNIKANIA V PROCESOCH EKONOMICKEJ GLOBALIZACIE
Creators: name: SVITACOVA, Eva
name: KOVACIKOVA, Elena
name: SVITACOVA, Eva
name: KOVACIKOVA, Elena
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Financial Economics
subject: new Economy
subject: economy globalization
subject: social responsibility
subject: entrepreneurial subjects
subject: global market

description: Globalization modifies a concrete way of creating New Economy which is the economy with modern communication networks, where competitiveness is determined by the ability to transform information into knowledge and intelligence. In times of economic globalization and foundation of so-called ,,New Economy" it is expected that Man will have possibilities to spread freely, utilise and accept information and knowledge, use potential of information-communication technologies not only on behalf of economic growth but also for provision of sustainable development, improvement quality of life and protection of human rights. Except of the fact that New Economy brings new opportunities for satisfying human need, it also brings some risks and negative moments. Its task is to focus the attention not only economic growth but also on economic development and responsible replies to the questions for example, if it provides dignified conditions for citizens of modern world; what is the role of entrepreneurship in development of countries but also in the whole planet; and also to consider the ways by which entrepreneurial subjects try to satisfy human need, the ways by which the profit is divided, as well as the work and social product among particular participants in the market or among all the citizens of our planet. Social responsibility of entrepreneurship becomes the global challenge for all the entrepreneurial subjects. Their duty is to get adjusted to new conditions of the global market and try to profit by the socially responsible actions.
A Sustainability Assessment of UBC Food Services’ Beef Food Products
Creators: name: Li, Rui
name: Lin, Jing
name: Shao, Joseph
Publisher: name: The University of British Columbia
Year: 2010

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