cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SOCIOKULTURNY KONTEXT V CUDZOJAZYCNEJ EDUKACII EUROMANAZEROV
SOCIO-CULTURAL CONTEXT IN FOREIGN LANGUAGE TEACHING OF EUROMANAGERS
Creators: name: BORSUKOVA, Hana
name: BORSUKOVA, Hana
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Financial Economics
subject: culturological dimension
subject: professional language
subject: manager's personality
subject: socio-cultural competence
subject: manager's communication

description: This work analyses the integration of intercultural dimension into the teaching of language for specific purposes. This aspect is of high importance mainly in the language instruction at the faculties of economics. Students should be mediated communicative structures relevant to intercultural communication. The interculturel aspect of managerial communication is based on interdisciplinary knowledge. The teachers of the Department of Professional Language Education deal with the theoritical and practical questions of intercultural competence within the teaching of language for specific purposes.
title: Chemical Weathering and Erosional Transport in an Ancient Shield Terrain
Creators: name: Wimpenny, Josh
Publisher: name: The Open University
Year: 2009

description: This project investigates how isotope systems respond to changes in continental weathering processes and the consequences for the chemical composition of the oceans. Both experimental and natural data indicate that Li and Mg stable isotope systems preserve information on the mineral reactions controlling water chemistry. Dissolution experiments indicate that primary mineral dissolution has little effect on Li, but does fractionate the isotopes of Mg, whereas secondary mineral formation involves preferential uptake of the lighter isotopes of both Li and Mg. Glacial regions have low chemical weathering rates so their rivers should, in principal, have Li isotope compositions (δ7Li) that are similar to those of the underlying rock. In practise, glacial rivers in Greenland have δ7Li values that differ significantly from the source rock. Subglacial uptake of 6Li by iron oxyhydroxides appears to influence the riverine Li isotope composition. In contrast, the principal control on Mg isotopes in glacial rivers appears to be primary mineral weathering. Carbonate dissolution dominates the chemistry of glacial rivers, and this phase possesses a light Mg isotope composition imparting this signature to the Greenland rivers. Both the Li and Mg isotope compositions of glacial rivers are similar to their respective global riverine averages, suggesting that the impact of glaciation on the Li and Mg composition of seawater may be small. The Re-Os radiogenic isotope system is also a useful tracer of continental weathering, its composition in the oceans being sensitive to changes in the flux and composition of continental weathering. Laterites are widespread in tropical regions and are shown to contain high concentrations of highly unradiogenic Os. Consequently, their subsequent weathering and erosion has potential to significantly affect the Os isotope composition delivered to the oceans.
Importância dos mercados externo e interno para o desenvolvimento da agricultura no Rio Grande do Sul
Creators: name: Andreoli, Dejalme
name: Andreoli, Dejalme
Publisher: name: Unknown
Year: 1981
Subjects: Agribusiness

description: Este estudo tem como objetivo principal evidenciar a importância de mercados, localizados a nível nacional ou internacional, como condição necessária para a consolidação do desenvolvimento da agricultura gaúcha. Procura demonstrar que este desenvolvimento se deu pela instalação e consolidação de segmentos produtivos diferenciados, em termos de localização espacial, e temporal e de mercado. Foi mantida uma perspectiva histórico-estrutural do desenvolvimento econômico agrícola estadual, cujo objetivo principal foi o de caracterizar sua condição de suficiência para aproveitar os investimentos de mercado. Os resultados do estudo indicam que as transformações estruturais demonstram uma tendência à monocultura. Considerando as características naturais como extremamente importantes nesta esfera da produção social, e o caráter desarticulador destas características representado pela prática da monocultura, vislumbram-se perspectivas nada alentadoras para o desenvolvimento futuro da economia agrícola gaúcha. Este aspecto torna-se mais importante se considerarmos a maior importância do mercado externo em relação ao interno, revelado pelos resultados empíricos da década de 70. O desempenho da economia estadual tenderá a depender de apenas uma cultura, cujos preços passarão a depender, significativamente, da conjuntura internacional.
Intersecting Brane Worlds -- A Path to the Standard Model ?
Creators: name: Lust, Dieter
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this review we describe the general geometrical framework of brane world constructions in orientifolds of type IIA string theory with D6-branes wrapping 3-cycles in a Calabi-Yau 3-fold. These branes generically intersect in points on the internal space, and the patterns of intersections govern the chiral fermion spectra. We discuss how the open string spectra in intersecting brane models are constructed, how the Standard Model can be embedded, and also how supersymmetry can be realized in this class of string vacua. After the general considerations we specialize the discussion to the case of orbifold backgrounds with intersecting D6-branes and to the quintic Calabi-Yau manifold. Then, we discuss parts of the effective action of intersecting brane world models. Specifically we compute from the Born-Infeld action of the wrapped D-branes the tree-level, D-term scalar potential, which is important for the stability of the considered backgrounds as well as for questions related to supersymmetry breaking. Second, we review the recent computation concerning of gauge coupling unification and also of one-loop gauge threshold corrections in intersecting brane world models. Finally we also discuss some aspects of proton decay in intersecting brane world models.
description: 31 pages, To appear in the proceedings of the RTN-workshop ``The quantum structure of spacetime and the geometric nature of fundamental interactions'', September 2003 in Copenhagen, revised version contains new refs and one corrected equation
Agrilus postulator Kerremans 1897
Creators: name: Curletti, Gianfranco
name: Migliore, Letizia
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Agrilus
Agrilus postulator

description: Agrilus postulator Kerremans, 1897
 Agrilus postulator Kerremans, 1897: 60.
 Material examinado: BRASIL, Paraná, Caviúna (atual Rolândia), 1 ex., XI.1956, 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 95, DOI: 10.1590/0031-1049.2014.54.08, http://zenodo.org/record/4656297
Supplemental material.doc
Creators: name: Yaogang Wang
Publisher: name: figshare
Year: 2020
Subjects: subject: 110306 Endocrinology
subject: FOS: Clinical medicine
subject: 111706 Epidemiology
subject: FOS: Health sciences
subject: Health Care
subject: 110904 Neurology and Neuromuscular Diseases

description: Supplemental tables of article entitled "Association of BMI and Serum Urate with Developing Dementia: A Prospective Cohort Study"
A Hierarchically-Organized Phase Diagram near a Quantum Critical Point in URu2Si2
Creators: name: Kim, K. H.
name: Harrison, N.
name: Jaime, M.
name: Boebinger, G. S.
name: Mydosh, J. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A comprehensive transport study, as a function of both temperature and magnetic field in continuous magnetic fields up to 45 T reveals that URu2Si2 possesses all the essential hallmarks of quantum criticality at temperatures above 5.5 K and fields around 38 T, but then collapses into multiple low temperature phases in a hierarchically-organized phase diagram as the temperature is reduced. Although certain generic features of the phase diagram are very similar to those in the cuprates and heavy fermion superconductors, the existence of multiple ordered hysteretic phases near the field-tuned quantum critical point is presently unique to URu2Si2. This finding suggests the existence of many competing order parameters separated by small energy difference in URu2Si2.
description: 6 pages, twocolum texts, 3 coloured figure included, submitted to PRL
Uma avaliação do sistema de comercialização de hortigranjeiros
Creators: name: Weiss, Joseph
name: Ramponi, Rubens Moncon
name: Weiss, Joseph
name: Ramponi, Rubens Moncon
Publisher: name: Unknown
Year: 1981
Subjects: Agribusiness

description: Caracterizam-se o processo de avaliação da comercialização, o sistema tradicional de comercialização por empresas pequenas, as distorções nos mercados de trabalho e capital e as mudanças tecnológicas ocorridas (cooperativas, comunicações, transportes, centrais de abastecimento, seções hortícolas dos supermercados e mercados do produtor). A COBAL contratou estudo sobre custos e margens do produtor ao consumidor de banana, cebola, laranja, tomate e batata em nove estados. Verificam-se ineficiências, recomendando-se intervenções quanto a cada uma: má distribuição de renda do consumidor, falta de economia de escala, necessidades localizadas de infra-estrutura, tecnologia inadequada de movimentação e beneficiamento, regulamentação prejudicial de feiras, casos de controle de mercado por poucas firmas e falta de coordenação entre agentes. Há evidências de concentração de mercado e lucros excessivos no comércio atacadista de batata e cebola de Belo Horizonte e Rio de Janeiro, no de banana do Rio de Janeiro e no varejo do Recife, não havendo estas indicações para os outros mercados e produtos estudados.
Otimização de formulações NPK a partir das relações entre nutrientes
Creators: name: Soares, Augusto César De Monteiro
name: Braun, Walter Augusto Gross
name: Soares, Augusto César De Monteiro
name: Braun, Walter Augusto Gross
Publisher: name: Unknown
Year: 1981
Subjects: Agribusiness

description: A técnica da programação linear pode ser utilizada para minimizar os custos dos fertilizantes a nível de misturadores. Neste trabalho, a técnica da programação linear foi utilizada a fim de determinar as formulações de custo mínimo a partir de concentrações dadas, ou a partir das relações de nutrientes sem referência a concentrações específicas. Com uma modificação no modelo, foi possível determinar as formulações de custo mínimo para oito relações dadas. Com base nos resultados econômicos deste trabalho, parece razoável concluir que: a) formulações mais concentradas podem levar a economias substanciais nos custos de transporte; b) com a legislação sobre fertilizantes vigente no país, a qual se restringe aos macronutrientes primários N, P e K, é razoável prever-se que, à proporção que a indústria de fertilizantes passe a fabricar misturas mais concentradas, elementos como o S, Ca e Mg poderão deixar de existir em seus produtos.
Percepção e não-adoção do "stand" técnico na cultura do milho
Creators: name: Molina Filho, José
name: Burke, Thomas Joseph
name: Molina Filho, José
name: Burke, Thomas Joseph
Publisher: name: Unknown
Year: 1981
Subjects: Agribusiness

description: Uma questão que tem preocupado pesquisadores e extensionistas é saber porque certas práticas agrícolas comprovadamente simples, baratas e eficientes não são adotadas pelos produtores, embora há muito tenham sido recomendadas pelos órgãos encarregados de sua difusão. Este estudo visa a encontrar uma possível resposta para esse problema, no caso do "stand" técnico para a cultura do milho. A hipótese geral é que o "stand" técnico não vem sendo adotado devido a distorções perceptivas dos produtores. A fim de testar essa pressuposição, advinda de novas concepções sobre percepção, aprendizagem e adoção de inovações, foi realizado um estudo empírico entre 251 produtores de milho, em cinco municípios do Estado de São Paulo, através de entrevistas e aferição dos "stands", realizadas em três diferentes ocasiões durante o ano agrícola 1978/79. O estudo mostra que os produtores superestimam o "stand" de suas culturas de milho. Desejariam, e pensam ter, de fato, um "stand" bem maior do que aquele que efetivamente conseguem. Há uma distorção que os leva a ver em seus campos "stands" que consideram como desejáveis e bastante próximos do "stand" técnico recomendado. Esses resultados sugerem que os produtores já adotaram o "stand" técnico enquanto idéia, mas, devido a distorções perceptivas, não o adotaram efetivamente como uma prática agrícola capaz de elevar, significativamente, a rentabilidade de suas culturas de milho. O trabalho conclui apresentando algumas recomendações, tanto para a pesquisa como para a extensão rural, com vistas à possível superação do problema.
Agrilus profugellus Thomson 1897
Creators: name: Curletti, Gianfranco
name: Migliore, Letizia
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Agrilus
Agrilus profugellus

description: Agrilus profugellus Thomson, 1897
 Agrilus profugellus Thomson, 1897: 68.
 Material examinado: BRASIL, São Paulo, São Paulo (Morumbi), 1 ex., XII.1953, 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 95, DOI: 10.1590/0031-1049.2014.54.08, http://zenodo.org/record/4656297
The role of disc torques in forming resonant planetary systems
Creators: name: Ataiee, S.
name: Kley, W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The most accurate method for modelling planetary migration and hence the formation of resonant systems is using hydrodynamical simulations. Usually, the force (torque) acting on a planet is calculated using the forces from the gas disc and the star, while the gas accelerations are computed using the pressure gradient, the star, and the planet's gravity, ignoring its own gravity. For the non-migrating the neglect of the disc gravity results in a consistent torque calculation while for the migrating case it is inconsistent. We aim to study how much this inconsistent torque calculation can affect the final configuration of a two-planet system. Our focus will be on low-mass planets because most of the multi-planetary systems, discovered by the Kepler survey, have masses around 10 Earth masses. Performing hydrodynamical simulations of planet-disc interaction, we measure the torques on non-migrating and migrating planets for various disc masses as well as density and temperature slopes with and without considering the disc self-gravity. Using this data, we find a relation that quantifies the inconsistency, use it in an N-body code, and perform an extended parameter study modelling the migration of a planetary system with different planet mass ratios and disc surface densities, in order to investigate the impact of the torque inconsistency on the architecture of the planetary system. Not considering disc self-gravity produces an artificially larger torque on the migrating planet that can result in tighter planetary systems. The deviation of this torque from the correct value is larger in discs with steeper surface density profiles. In hydrodynamical modelling of multi-planetary systems, it is crucial to account for the torque correction, otherwise the results favour more packed systems.
description: 7 pages, 7 figures, accepted for publication in A&A
Braneworld inflation
Creators: name: Buchel, Alex
name: Ghodsi, Ahmad
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss various realizations of the four dimensional braneworld inflation in warped geometries of string theory. In all models the inflaton field is represented by a Dp probe brane scalar specifying its position in the warped throat of the compactification manifold. We study existing inflationary throat local geometries, and construct a new example. The inflationary brane is either a D3- or a D5-brane of type IIB string theory. In the latter case the inflationary brane is wrapping a two-cycle of the compactification manifold. We discuss some phenomenological aspects of the model where slow-roll conditions are under computational control.
description: 31 pages + 6 figures, v2: published PRD version
title: Characterisation of Supported and Unsupported 12-Heteropolyacids
Creators: name: Derrick, Glyn
Publisher: name: The Open University
Year: 2009

description: Phase transformations of H4[SiW12O40].ᵪH2O in the temperature range 25 - 900°C have been investigated and characterised by differential thermal analysis (DTA), on thermogravimeteric analysis (TGA), X-ray powder diffraction (XRD), 29Si MAS NMR and FT-IR spectroscopy. Dehydration occurs between 25 - 300°C to give three crystalline hydrated states (ᵪ = 24,14 and 6) and finally an anhydrous form.

Silica-supported H4[SiW12O40] with 25 wt % loading has been studied using DTA, TGA, XRD, FT-IR, 29Si MAS NMR and X-ray photoelectron spectroscopy (XPS). It is found that the Keggin anion remains unchanged and is well dispersed on the support. A chemically distinct interfacial H4[SiW12O40] species is identified by XPS and is attributed to perturbed tungsten atoms within Keggin anions in direct contact with the silica-support.

Used catalysts have been characterised by DTA (under nitrogen), TGA, XRD, 29Si MAS NMR, FT-IR and XPS : the basic Keggin cage structure is unaffected by standard reactor conditions and lifetimes. TGA and DTA studies carried out under flowing air revealed two forms of coke deposited on the catalyst: hard and soft coke. Extraction with dichloromethane allowed the removal of soft coke (TGA removal range 170-370°C) but was unable to remove hard coke (TGA removal range 370-570°C). Removal of hard coke from industrial catalysts was attempted using aerobic oxidisation at 400°C, the complete oxidisation of the coke occurred after 6 hours.

The acidic sites of H4[SiW12O40], H3[PW12O40] and H4[SiW12O40]/H3[PW12O40] (1:1 molar ratio), both silica-supported and non-supported, were characterised using solid state 13C NMR experiments for adsorbed acetone. For all three solid acids CP/MAS NMR experiments revealed the presence of isolated and hydrated acidic protons. The isolated acidic protons are restricted in mobility compared to the hydrated acidic protons. A reduction in the acidity of the hydrated acidic proton was observed when the 12-heteropolyacid compounds were supported on silica.
title: Investigating the Mechanism of Action of Colostrinin™ on Cells in Culture
Creators: name: Froud, Kristina Elizabeth
Publisher: name: The Open University
Year: 2009

description: The aim of this Ph.D. project was to investigate the effects of Colostrinin (CLN) on cells in culture, and its Aβility to prevent or alleviate cytotoxicity induced by reactive oxygen species (ROS) and beta-amyloid (Aβ). Two cell culture systems were used to analyse the effects of CLN; rat primary hippocampal cultures and the B50 rat neuronal cell line. Bovine CLN was found to have no adverse effects on cell morphology or survival and to have a small, non-significant effect, on both menadione-induced, oxidative stress-mediated toxicity and Aβ1-42-induced toxicity of neurons in primary hippocampal cultures. This protective effect was found to potentially be related to the antioxidant effects of CLN. CLN was demonstrated to prevent a menadione-induced increase in ROS in the B50 cell line. Furthermore CLN was able to reverse a significant Aβ1-42-mediated increase in the protein levels of the antioxidant enzyme Cu/Zu superoxide dismutase (SOD) in primary hippocampal cultures, although CLN alone caused an increase in SOD1 protein in the B50 cell line. Bovine CLN was shown, in both B50 cells and primary hippocampal cells, not to significantly decrease the protein levels of cyclin dependent kinase 5 (Cdk5) which has previously been demonstrated to be involved in the mechanism of tumour necrosis factor (TNF) α-mediated protection against Aβ-induced toxicity in primary hippocampal cultures. Furthermore CLN did not consistently alter the expression of activated caspase 3 in either B50 or primary hippocampal cells. This study adds to the knowledge and understanding of the mechanism of action of CLN.
A model of diffractive excitation in $pp$ collisions at high energies
Creators: name: Broilo, M.
name: Goncalves, V. P.
name: Silva, P. V. R. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A phenomenological model for the description of the single and double diffractive excitation in $pp$ collisions at high energies is presented. Considering the Good -- Walker approach, we propose a model for the eigenstates of the scattering operator and for the treatment of the interaction between them, with the high energy behavior of the cross section driven by perturbative QCD. The behavior of the total, elastic, single and double diffractive cross sections are analyzed and predictions for the energies of Run 3 of the LHC and those of the Cosmic Rays experiments are derived. We demonstrate that the model describes the current data for the energy dependence of the cross sections. A comparison with the recent data for the $ρ$ parameter and the differential elastic cross section are also presented and shortcomings of the current model are discussed.
description: 13 pages, 5 figures, 1 table. Improved version published in Physical Review D
A agroindústria e o setor agropecuário - nota incidental sobre o tema
Creators: name: Santos, Robério Ferreira Dos
name: Capp Filho, Mário
name: Santos, Robério Ferreira Dos
name: Capp Filho, Mário
Publisher: name: Unknown
Year: 1981
Subjects: Agribusiness

description: O principal objetivo deste trabalho é enfatizar a importância da agroindústria não só para o país, mas, principalmente, para o setor agropecuário. Destaca-se que, se o objetivo do governo é fortalecer a agricultura nacional, a agroindústria necessita ser organizada em termos de cooperativas de produtores rurais. Salienta-se a força que a agroindústria, nestas condições, passa a ter dentro do setor rural e sugere-se maior participação do SIBRATER dentro do processo da agro industrialização.
Exploring Ways to Lighten AMS Food and Beverage Department’s Ecological Footprint: The Pit Burger Bar
Creators: name: Yao, Frank
name: Li, Jackie
name: Kinoshita, Megumi
name: Wong, Vivian
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.”
Agrilus prolixus Kerremans 1897
Creators: name: Curletti, Gianfranco
name: Migliore, Letizia
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Agrilus
Agrilus prolixus

description: Agrilus prolixus Kerremans, 1897
 Agrilus prolixus Kerremans, 1897: 68.
 Material examinado: BRASIL, Santa Catarina, Nova Teutônia, 1 ex., X.1966, F. Plaumann 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
The Ensemble Photometric Variability of ~25000 Quasars in the Sloan Digital Sky Survey
Creators: name: Berk, D. E. Vanden
name: Wilhite, B. C.
name: Kron, R. G.
name: Anderson, S. F.
name: Brunner, R. J.
name: Hall, P. B.
name: Ivezic, Z.
name: Richards, G. T.
name: Schneider, D. P.
name: York, D. G.
name: Brinkmann, J. V.
name: Lamb, D. Q.
name: Nichol, R. C.
name: Schlegel, D. J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using a sample of over 25000 spectroscopically confirmed quasars from the Sloan Digital Sky Survey, we show how quasar variability in the rest frame optical/UV regime depends upon rest frame time lag, luminosity, rest wavelength, redshift, the presence of radio and X-ray emission, and the presence of broad absorption line systems. The time dependence of variability (the structure function) is well-fit by a single power law on timescales from days to years. There is an anti-correlation of variability amplitude with rest wavelength, and quasars are systematically bluer when brighter at all redshifts. There is a strong anti-correlation of variability with quasar luminosity. There is also a significant positive correlation of variability amplitude with redshift, indicating evolution of the quasar population or the variability mechanism. We parameterize all of these relationships. Quasars with RASS X-ray detections are significantly more variable (at optical/UV wavelengths) than those without, and radio loud quasars are marginally more variable than their radio weak counterparts. We find no significant difference in the variability of quasars with and without broad absorption line troughs. Models involving multiple discrete events or gravitational microlensing are unlikely by themselves to account for the data. So-called accretion disk instability models are promising, but more quantitative predictions are needed.
description: 41 pages, 21 figures, AASTeX, Accepted for publication in ApJ
(sur)renderings: contiguity and living inquiry
Creators: name: Ward-Davies, Anastaszia
Publisher: name: The University of Melbourne
Year: 2024
Subjects: classificationCode: 360299
subject: Creative and professional writing not elsewhere classified
classificationCode: 360602
subject: Fine arts
classificationCode: 390101
subject: Creative arts, media and communication curriculum and pedagogy

description: The first zine in this project was a series of hundred-word reflections (Lauren & Berlandt, 2019) [“four hundreds for me”] I wrote sitting under my desk at 7am in the middle of winter, underneath my a/r/tographic playmat. Somewhat compulsively, I wrote zine after zine as a sense-making exercise (Greene, 1987; Haynes, 2001), initially to examine my inability to participate in my own research. The turn occurs when I see these zines as a/r/tographic openings (Irwin, 2013) for and as research.These zines unfolded to story reasons why I could not participate in my own research, including being tired [“four hundreds for me”], being overwhelmed [“how to do dishes”], discomfort around being a working mother [“Re/searching, art/making, m/othering”] and the feeling of drowning [“What Are You Doing in Gloomy Hollow?”]. I explored my inability to participate in a living inquiry that felt haunted by postpartum psychosis and the unravelling of significant childhood trauma [“eeexxxccceessss” and “[sur]renderings: contiguity and living inquiry”]. I folded a longtime friend into the process [“how to make a zine when your life is falling apart”] and started to see the boundaries between my personal zine-making and the zines made as da/r/ta by participants shift; they started to overlap. I started to see their grief for their schools mirrored in my own grief for my research [“an ode to our goals for education (or something”] and my drowning in motherhood as contiguous with their drowning in schools [“neither of these wolves can do it”].This is an 8-page zine that reconsiders identity of a/r/tographer and mother: artist, researcher, teacher and the complexities in these identities, and my Haunted Living Inquiry.
title: Correlation Between Affective Factors Related to Information and Communication Technologies (ICT) in Distance Language Learning (DLL) and a Sense of Satisfaction Related to Progress
Creators: name: Bell, Roxton Stanley
Publisher: name: The Open University
Year: 2009

description: This study is motivated by the recent development of information and communication technologies (ICT) applications to language learning in distance mode (DLL) together with the fact that, as yet, little research on affective factors associated with these developments has been carried out. The study consists of a survey that seeks to find correlations between the following affective factors: levels of ICT-related anxiety (AX_ICT); levels of satisfaction with progress (SP); and attitudes towards the role of ICT in distance language learning (AT_ICT). The method of analysis is based on SPSS software. The study concludes that there is a positive correlation between (SP) and (AT_ICT), but there is no correlation between (AX_ICT) and (SP) or (AT_ICT). However, the study shows that if the category “ICT-related anxiety” is parsed into smaller elements, a negative correlation can be established between some of these itemised ICT-related anxiety elements and (SP) and (AT_ICT).
Agrilus pseudosimilanus Obenberger 1933
Creators: name: Curletti, Gianfranco
name: Migliore, Letizia
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Agrilus
Agrilus pseudosimilanus

description: Agrilus pseudosimilanus Obenberger, 1933
 Agrilus pseudosimilanus Obenberger, 1933b: 79.
 Material examinado: BRASIL, Pará, Belém (Marituba), 1 ex., VIII.1964, E. Dente 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
EXTraS discovery of an X-ray superflare from an L dwarf
Creators: name: De Luca, A.
name: Stelzer, B.
name: Burgasser, A. J.
name: Pizzocaro, D.
name: Ranalli, P.
name: Raetz, S.
name: Marelli, M.
name: Novara, G.
name: Vignali, C.
name: Belfiore, A.
name: Esposito, P.
name: Franzetti, P.
name: Fumana, M.
name: Gilli, R.
name: Salvaterra, R.
name: Tiengo, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the first detection of an X-ray flare from an ultracool dwarf of spectral class L. The event was identified in the EXTraS database of XMM-Newton variable sources, and its optical counterpart, J0331-27, was found through a cross-match with the Dark Energy Survey Year 3 release. Next to an earlier four-photon detection of Kelu-1, J0331-27 is only the second L dwarf detected in X-rays, and much more distant than other ultracool dwarfs with X-ray detections (photometric distance of 240 pc). From an optical spectrum with the VIMOS instrument at the VLT, we determine the spectral type of J0331-27 to be L1. The X-ray flare has an energy of E_X,F ~ 2x10^33 erg, placing it in the regime of superflares. No quiescent emission is detected, and from 2.5 Msec of XMM data we derive an upper limit of L_X,qui < 10^27 erg/s. The flare peak luminosity L_X,peak = 6.3x10^29 erg/s, flare duration tau_decay ~ 2400 s, and plasma temperature (~16 MK) are similar to values observed in X-ray flares of M dwarfs. This shows that strong magnetic reconnection events and the ensuing plasma heating are still present even in objects with photospheres as cool as ~2100 K. However, the absence of any other flares above the detection threshold of E_X,F ~2.5x10^32 erg in a total of ~2.5 Ms of X-ray data yields a flare energy number distribution inconsistent with the canonical power law dN/dE ~ E^-2, suggesting that magnetic energy release in J0331-27 -- and possibly in all L dwarfs -- takes place predominantly in the form of giant flares.
description: 5 pages, 3 figures. Published as a Letter to A&A
DIE VERMINDERING VAN MARKRISIKO IN 'N VRYE LANDBOU MARKSTELSEL (SONDER STAATSINMENGING)
The decrease of markert risk in a free agricultural market system (without state interference).
Creators: name: Keyser, Konrad
name: Keyser, Konrad
Publisher: name: Unknown
Year: 1991
Subjects: subject: Agricultural and Food Policy
subject: Marketing
subject: FOS: Economics and business
subject: Risk and Uncertainty

description: The Government gives a clear indication with their present subsidy policy of a withdrawal out of agriculture and wants supply and demand to play a bigger role in the determining of prices. Maize and wheat are examples of the implementing of this policy. GATT members are currently liberalising world agriculture to get it on more common ground. SA will in future be more exposed to international trade and big price fluctuations. The suspension of sanctions will also contribute to this. The uncertainty of the SA climate imply a bigger dependence on international trade through either imports or exports. Against this background the need for for a decrease in price risk originates. With this risk there is also a dependence on exchange rate fluctuations. Institutions like the Maize Board are using hedging methods on the Chicago Board of Trade to reduce the risk of international price fluctuations. Exchange rate covering is also used to reduce risk of exchange rate fluctuations. This action could be taken on both imports and exports. This paper explains how industries, organisations and individuals can use hedging as a method of reducing the risk of price and exchange rate fluctuations.
Cosmic metal production and the mean metallicity of the Universe
Creators: name: Calura, F.
name: Matteucci, F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: By means of detailed chemo-photometric models for elliptical, spiral and irregular galaxies, we evaluate the cosmic history of the production of chemical elements as well as the metal mass density of the present-day universe. We then calculate the mean metal abundances for galaxies of different morphological types, along with the average metallicity of galactic matter in the universe (stars, gas and intergalactic medium). For the average metallicity of galaxies in the local universe, we find Z_gal= 0.0175, i.e. close to the solar value. We find the main metal production in spheroids (ellipticals and bulges) to occur at very early times, implying an early peak in the metal production and a subsequent decrease. On the other hand, the metal production in spirals and irregulars is always increasing with time. We perform a self-consistent census of the baryons and metals in the local universe finding that, while the vast majority of the baryons lies outside galaxies in the inter-galactic medium (IGM), 52 % of the metals (with the exception of the Fe-peak elements) is locked up in stars and in the interstellar medium. We estimate indirectly the amount of baryons which resides in the IGM and we derive its mean Fe abundance, finding a value of X_Fe,IGM=0.05 X_Fe,sun. We believe that this estimate is uncertain by a factor of 2, owing to the normalization of the local luminosity function. This means that the Fe abundance of 0.3 solar inferred from X-ray observations of the hot intra-cluster medium (ICM) is higher than the average Fe abundance of the inter-galactic gas in the field.
description: 18 pages, 3 figures, MNRAS, in press, only minor revisions (parts in bold, typos)
THE EFFECT OF INCOME ON THE MARKET FOR CARBOHYDRATES IN SOUTH AFRICA
Die effek van inkome op die koolhidraatmark in Suid Afrika
Creators: name: Elliott, M. B.
name: Van Zyl, J.
name: Elliott, M. B.
name: Van Zyl, J.
Publisher: name: Unknown
Year: 1991
Subjects: subject: Labor and Human Capital
subject: Marketing
subject: FOS: Economics and business

description: Despite the importance of the carbohydrate market as a source of staple food for the majority of the South African population, very little statistical information is available on the subject as a basis for policy formulation. Research centred on the white maize industry. Results show that regional differences within the market for maize are of cardinal importance, making country-wide generalisations dangerous and a regional marketing strategy imperative. One of the most significant results for the strategic marketing of maize meal is that a single population estimate for income elasticity is inadequate, especially when 94% of maize meal is consumed by a single consumer group - the Black population. Indications are that for Blacks in South Africa, maize is a normal good if seen in a national context. Consequently, as incomes fall or as relative prices rise, less maize is consumed. This is supported by urban price elasticities. It is proposed that this could have had a substantial effect on maize consumption in the past and have important implications for the marketing of staple food in a new South Africa.
In-Vessel Compost Facility
Creators: name: Reeve, Matt
name: Blais, Chris
name: Ammad, Ali
name: Choi, Sung Woo
name: Du, Codey
name: Liu, Dedra
name: Olsen, Erik
name: Sultan, Moiz
name: Wu, David
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.”
History-dependent percolation on multiplex networks
Creators: name: Li, Ming
name: Lü, Linyuan
name: Deng, Youjin
name: Hu, Mao-Bin
name: Wang, Hao
name: Medo, Matúš
name: Stanley, H. Eugene
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The structure of interconnected systems and its impact on the system dynamics is a much-studied cross-disciplinary topic. Although various critical phenomena have been found in different models, the study on the connections between different percolation transitions is still lacking. Here we propose a unified framework to study the origins of the discontinuous transitions of the percolation process on interacting networks. The model evolves in generations with the result of the present percolation depending on the previous state and thus is history-dependent. Both theoretical analysis and Monte Carlo simulations reveal that the nature of the transition remains the same at finite generations but exhibits an abrupt change for the infinite generation. We use brain functional correlation and morphological similarity data to show that our model also provides a general method to explore the network structure and can contribute to many practical applications, such as detecting the abnormal structures of human brain networks.
description: 22 pages, 13 figures
Surface segregation of conformationally asymmetric polymer blends
Creators: name: Stepanow, Semjon
name: Fedorenko, Andrei A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We have generalized the Edwards' method of collective description of dense polymer systems in terms of effective potentials to polymer blends in the presence of a surface. With this method we have studied conformationally asymmetric athermic polymer blends in the presence of a hard wall to the first order in effective potentials. For polymers with the same gyration radius $R_g$ but different statistical segment lengths $l_{A}$ and $l_{B}$ the excess concentration of stiffer polymers at the surface is derived as $% δρ_{A}(z=0)\sim (l_{B}^{-2}-l_{A}^{-2}){\ln (}R_{g}^{2}/l_{c}^{2}{)%}$, where $l_{c}$ is a local length below of which the incompressibility of the polymer blend is violated. For polymer blends differing only in degrees of polymerization the shorter polymer enriches the wall.
description: 11 pages, 7 figures, revtex4
title: Target Site Selection of Retroviral Vectors in the Human Genome: Viral and Genomic Determinants of Non-Random Integration Patterns in Hematopoietic Cells
Creators: name: Cattoglio, Claudia
Publisher: name: The Open University
Year: 2008

description: Integration of gamma-retroviruses (RV) and lentiviruses (LV) follows different, non-random patterns in mammalian genomes. To obtain information about the viral and genomic determinants of integration preferences, I mapped > 2,500 integration sites of RV and LV vectors carrying wild type or modified LTRs in human CD34+ hematopoietic cells. Recurrent insertion sites (hot spots) account for > 20% of the RV integration events, while they are significantly less frequent for LV vectors. Genes controlling growth, differentiation and development of the hematopoietic and immune system are targeted at high frequency by RV vectors and further enriched in RV hot spots, suggesting that the cell gene expression program is instrumental in directing RV integration. To investigate the role of transcriptional regulatory networks in directing RV and LV integration, I evaluated the local abundance and arrangement of putative transcription factor binding sites (TFBSs) in the genomic regions flanking integrated proviruses. RV, but not LV integrations are flanked by specific subsets of TFBSs, independently of their location with respect to genes (within genes, outside, or around their transcription start sites). Hierarchical clustering and a Principal Components Analysis of TFBSs flanking integration sites of RV vectors carrying different LTRs, and LV vectors packaged with wild type or RV-LV hybrid integrase, showed that both the protein and the DNA component of the pre-integration complex (PIC) have a causal role in directing proviral integration in TFBS-rich regions of the genome. Chromatin immunoprecipitation analysis indicated that TFs are bound to unintegrated LTR enhancers into the nucleus, and might synergize with the viral integrase in tethering retroviral PICs to specific domains of transcriptionally active chromatin. The results of this project suggest substantial differences in the molecular mechanisms tethering RV and LV PICs to human chromatin, and predict a different insertional oncogenesis risk of RV vs. LV vectors for human gene therapy.
A Deep CFHT Optical Search for a Counterpart to the Possible Neutron Star -- Black Hole Merger GW190814
Creators: name: Vieira, Nicholas
name: Ruan, John J.
name: Haggard, Daryl
name: Drout, Maria R.
name: Nynka, Melania C.
name: Boyce, Hope
name: Spekkens, Kristine
name: Safi-Harb, Samar
name: Carlberg, Raymond G.
name: Fernández, Rodrigo
name: Piro, Anthony L.
name: Afsariardchi, Niloufar
name: Moon, Dae-Sik
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a wide-field optical imaging search for electromagnetic counterparts to the likely neutron star - black hole (NS-BH) merger GW190814/S190814bv. This compact binary merger was detected through gravitational waves by the LIGO/Virgo interferometers, with masses suggestive of a NS-BH merger. We imaged the LIGO/Virgo localization region using the MegaCam instrument on the Canada-France-Hawaii Telescope. We describe our hybrid observing strategy of both tiling and galaxy-targeted observations, as well as our image differencing and transient detection pipeline. Our observing campaign produced some of the deepest multi-band images of the region between 1.7 and 8.7 days post-merger, reaching a 5sigma depth of g > 22.8 (AB mag) at 1.7 days and i > 23.1 and i > 23.9 at 3.7 and 8.7 days, respectively. These observations cover a mean total integrated probability of 67.0% of the localization region. We find no compelling candidate transient counterparts to this merger in our images, which suggests that either the lighter object was tidally disrupted inside of the BH's innermost stable circular orbit, the transient lies outside of the observed sky footprint, or the lighter object is a low-mass BH. We use 5sigma source detection upper limits from our images in the NS-BH interpretation of this merger to constrain the mass of the kilonova ejecta to be Mej < 0.015Msun for a 'blue' (kappa = 0.5 cm^2 g^-1) kilonova, and Mej < 0.04Msun for a 'red' (kappa = 5-10 cm^2 g^-1) kilonova. Our observations emphasize the key role of large-aperture telescopes and wide-field imagers such as CFHT MegaCam in enabling deep searches for electromagnetic counterparts to gravitational wave events.
description: 23 pages, 13 figures including appendices; accepted to ApJ with minor revisions
Plastic Flow in Two-Dimensional Solids
Creators: name: Onuki, Akira
Publisher: name: arXiv
Year: 2003
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A time-dependent Ginzburg-Landau model of plastic deformation in two-dimensional solids is presented. The fundamental dynamic variables are the displacement field $\bi u$ and the lattice velocity ${\bi v}=\p {\bi u}/\p t$. Damping is assumed to arise from the shear viscosity in the momentum equation. The elastic energy density is a periodic function of the shear and tetragonal strains, which enables formation of slips at large strains. In this work we neglect defects such as vacancies, interstitials, or grain boundaries. The simplest slip consists of two edge dislocations with opposite Burgers vectors. The formation energy of a slip is minimized if its orientation is parallel or perpendicular to the flow in simple shear deformation and if it makes angles of $\pm π/4$ with respect to the stretched direction in uniaxial stretching. High-density dislocations produced in plastic flow do not disappear even if the flow is stopped. Thus large applied strains give rise to metastable, structurally disordered states. We divide the elastic energy into an elastic part due to affine deformation and a defect part. The latter represents degree of disorder and is nearly constant in plastic flow under cyclic straining.
description: 16pages, Figures can be obtained at http://stat.scphys.kyoto-u.ac.jp/index-e.html