cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Out-of-plane equilibrium spin current in a quasi-two-dimensional electron gas under in-plane magnetic field
Creators: name: Nakhmedov, E.
name: Alekperov, O.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Equilibrium spin-current is calculated in a quasi-two-dimensional electron gas with finite thickness under in-plane magnetic field and in the presence of Rashba- and Dresselhaus spin-orbit interactions. The transverse confinement is modeled by means of a parabolic potential. An orbital effect of the in-plane magnetic field is shown to mix a transverse quantized spin-up state with nearest-neighboring spin-down states. The out-off-plane component of the equilibrium spin current appears to be not zero in the presence of an in-plane magnetic field, provided at least two transverse-quantized levels are filled. In the absence of the magnetic field the obtained results coincide with the well-known results, yielding cubic dependence of the equilibrium spin current on the spin-orbit coupling constants. The persistent spin-current vanishes in the absence of the magnetic field if Rashba- and Dresselhaus spin-orbit coefficients,α and β, are equal each other. In-plane magnetic field destroys this symmetry, and accumulates a finite spin-current as α \rightarrow β. Magnetic field is shown to change strongly the equilibrium current of the in-plane spin components, and gives new contributions to the cubic-dependent on spin-orbit constants terms. These new terms depend linearly on the spin-orbit constants.
description: 15 pages
The development of bioreactor protocols for the production of recombinant therapeutic proteins from genetically engineered parasite cells.
Creators: name: Pollock, Aaron Ellsworth
Publisher: name: University of Calgary
Year: 1998
Subjects: subject: TP248.65 .P76 P65 1998
subject: Recombinant proteins
subject: Leishmania--Growth.
subject: Bioreactors.
subject: Genetic engineering

description: Bibliography: p. 150-158.
description: UARC
description: Copyright waiver included: y
Entangled Spin-Orbital Phases in the d$^9$ Model
Creators: name: Brzezicki, Wojciech
name: Oleś, Andrzej M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the phase diagrams of the spin-orbital $d^9$ Kugel-Khomskii model for a bilayer and a monolayer square lattice using Bethe-Peierls-Weiss method. For a bilayer we obtain valence bond phases with interlayer singlets, with alternating planar singlets, and two entangled spin-orbital (ESO) phases, in addition to the antiferromagnetic and ferromagnetic order. Possibility of such entangled phases in a monolayer is under investigation at present.
description: 3 pages, 2 figures, presented at Euroconference Physics of Magnetism 2011
Biologically and physically-based rendering of natural scenes
Creators: name: Baranoski, Gladimir V. Guimaraes
Publisher: name: University of Calgary
Year: 1998
Subjects: subject: T385 .B366 1998
subject: Computer graphics.
subject: Radiosity.
subject: Light - Computer simulation.
subject: Image processing

description: Bibliography: p. 175-200.
description: UARC
Supplemental Information from Limited plasticity in thermally tolerant ectotherm populations: evidence for a trade-off
Creators: name: Barley, Jordanna M.
name: Cheng, Brian S.
name: Sasaki, Matthew
name: Gignoux-Wolfsohn, Sarah
name: Hays, Cynthia G.
name: Putnam, Alysha B.
name: Sheth, Seema
name: Villeneuve, Andrew R.
name: Kelly, Morgan
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Ecology

description: Many species face extinction risks due to climate change, and there is an urgent need to identify which species' populations will be most vulnerable. Plasticity in heat tolerance, which includes acclimation or hardening, occurs when prior exposure to a warmer temperature changes an organism's upper thermal limit. The capacity for thermal acclimation could provide protection against warming, but prior work has found few generalizable patterns to explain variation in this trait. Here, we report the results of the first meta-analysis to examine within-species variation in thermal plasticity, using results from 20 studies (19 species) that quantified thermal acclimation capacities across 78 populations. We used meta-regression to evaluate two leading hypotheses. The climate variability hypothesis predicts that populations from more thermally variable habitats will have greater plasticity, while the trade-off hypothesis predicts that populations with the lowest heat tolerance will have the greatest plasticity. Our analysis indicates strong support for the trade-off hypothesis since populations with greater thermal tolerance had reduced plasticity. These results advance our understanding of variation in populations' susceptibility to climate change and imply that populations with the highest thermal tolerance may have limited phenotypic plasticity to adjust to ongoing climate warming.
Roles of the BLADE-ON-PETIOLE genes in Arabidopsis thaliana lateral organ development
Creators: name: McKim, Sarah Michelle
Publisher: name: University of British Columbia
Year: 2009

description: The BLADE-ON-PETIOLE1 (BOP1) and BOP2 genes encode redundant transcription factors involved in morphological patterning in the proximal regions of lateral organs in Arabidopsis thaliana. Loss-of-function bop1 bop2 mutants display several developmental defects including a loss of floral organ abscission. Abscission occurs along specialised cell files, called abscission zones (AZs), which form at the boundary between the leaving organ and main plant body. This dissertation examined the contribution of BOP1 and BOP2 to the known abscission developmental framework and determined that bop1 bop2 flowers lack anatomy associated with AZs. Vestigial cauline leaf AZs are also absent in bop1 bop2 suggesting that BOP proteins are essential to establish AZ anatomy in both leaves and flowers, the first genes identified in Arabidopsis to do so. In support of this hypothesis, BOP1/2 activity is required for both premature floral organ abscission and ectopic cauline leaf abscission promoted by the constitutive expression of INFLORESCENCE DEFICIENT IN ABSCISSION (IDA) gene. In addition, BOP1 and BOP2 were found to promote growth of nectary glands which normally develop off the receptacle at the base of stamens adjacent to AZs. Boundary, nectary and AZ specific-gene expression is relatively unperturbed in bop1 bop2, indicating that positional information is intact. Taken together, these data suggest that BOP1 and BOP2 are key downstream modulators of positional programs operating at the lateral organ-plant body interface. bop1 bop2 flowers also show a subtle loss in floral meristem identity. Genetic analyses revealed a crucial role for BOP1 and BOP2 in suppression of secondary inflorescence identity in early floral primordia only when functions either LEAFY (LFY) or APETALA (AP1) were compromised, suggesting that BOP1 and BOP2 are potentiators of LFY and AP1 function rather than floral meristem identity genes themselves. BOP1 and BOP2 belong to the NPR1-like protein family. A phylogenetic analysis in land plants found both monocot and dicot BOP protein homologues that cluster independently from other NPR1-like proteins. A final contribution examined the subcellular localisation of BOP2 during development and showed that BOP protein-protein interactions in planta showed behaviour consistent with that known for NPR1.
Giant Phonon Softening and Enhancement of Superconductivity by Phosphorus Doping of BaNi2As2
Creators: name: Kudo, K.
name: Takasuga, M.
name: Okamoto, Y.
name: Hiroi, Z.
name: Nohara, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The effects of phosphorus doping on the structural and superconducting phase transitions of BaNi$_2$(As$_{1-x}$P$_x$)$_2$ were studied. The specific heat, resistivity, and magnetic susceptibility were measured. The results revealed an abrupt increase in the superconducting transition temperature ($T_c$) from 0.6 K in the triclinic phase (space group P$\bar{1}$) with less phosphorus (0 $\leq$ $x$ $\leq$ 0.067) to 3.3 K in the tetragonal phase (space group I4/mmm) with more phosphorus ($x$ $\geq$ 0.067). Our data analysis suggests that a doping-induced softening related to an in-plane Ni and As(P) phonon mode is responsible for the enhanced superconductivity in the tetragonal phase.
description: 5 pages, 4 figures
A new cosmological distance measure using AGN
Creators: name: Watson, D.
name: Denney, K. D.
name: Vestergaard, M.
name: Davis, T. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Accurate distances to celestial objects are key to establishing the age and energy density of the Universe and the nature of dark energy. A distance measure using active galactic nuclei (AGN) has been sought for more than forty years, as they are extremely luminous and can be observed at very large distances. We report here the discovery of an accurate luminosity distance measure using AGN. We use the tight relationship between the luminosity of an AGN and the radius of its broad line region established via reverberation mapping to determine the luminosity distances to a sample of 38 AGN. All reliable distance measures up to now have been limited to moderate redshift -- AGN will, for the first time, allow distances to be estimated to z~4, where variations of dark energy and alternate gravity theories can be probed.
description: Apj in press; 5 pages, 3 figures emulateapj
Commentary on 'On generating uniform bottom shear stress. Part I: A quantitative study of microcosm chambers'
Creators: name: Gust, Giselher
Publisher: name: TUHH Universitätsbibliothek
Year: 2009
Subjects: Microcosm chamber, Erosion device, Bottom stress distribution, Calibration data

description: Commentary on a published article, which used a numerical model to evaluate an experimentally fully calibrated microcosm chamber.
CoopGeo: A Beaconless Geographic Cross-Layer Protocol for Cooperative Wireless Ad Hoc Networks
Creators: name: Aguilar, Teck
name: Syue, Syue-Ju
name: Gauthier, Vincent
name: Afifi, Hossam
name: Wang, Chin-Liang
Publisher: name: arXiv
Year: 2012
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Cooperative relaying has been proposed as a promising transmission technique that effectively creates spatial diversity through the cooperation among spatially distributed nodes. However, to achieve efficient communications while gaining full benefits from cooperation, more interactions at higher protocol layers, particularly the MAC (Medium Access Control) and network layers, are vitally required. This is ignored in most existing articles that mainly focus on physical (PHY)-layer relaying techniques. In this paper, we propose a novel cross-layer framework involving two levels of joint design---a MAC-network cross-layer design for forwarder selection (or termed routing) and a MAC-PHY for relay selection---over symbol-wise varying channels. Based on location knowledge and contention processes, the proposed cross-layer protocol, CoopGeo, aims at providing an efficient, distributed approach to select next hops and optimal relays along a communication path. Simulation results demonstrate that CoopGeo not only operates properly with varying densities of nodes, but performs significantly better than the existing protocol BOSS in terms of packet error rate, transmission error probability, and saturated throughput.
"Feat of Irony": prosopopoeia and irony in Emily Dickinson's poetry
Creators: name: Smith, Cynthia Mayne
Publisher: name: University of Calgary
Year: 1996
Subjects: subject: PS 1541 Z5 S65 1996
subject: Dickinson, Emily, 1830-1886
subject: Irony in literature
subject: Metaphor in literature

description: Bibliography: p. 125-132.
Bands, spin fluctuations and traces of Fermi surfaces in angle-resolved photoemission intensities for high-$T_C$ cuprates
Creators: name: Jarlborg, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The band structures of pure and hole doped La$_2$CuO$_4$ with antiferromagnetic (AFM) spin-fluctuations are calculated and compared to spectral weights of ARPES. It is shown that observations of coexisting Fermi surface (FS) arcs and closed FS pockets are consistent with modulated AFM spin fluctuations of varying wave lengths. Large variations of strong spin fluctuations make the outer part of the FS break diffuse at low doping. This part of the FS is suppressed at high doping when spin fluctuations are weak. The resulting superimposed spectral weight has features both from FS arcs and closed pockets. A connection between results of ARPES, neutron scattering, and band results for the modulated AFM spin wave state, suggests that spin-phonon coupling is an important mechanism for the %pseudogap and other properties of the cuprates.
description: 6 pages, 7 figures
A conformal approach for the analysis of the non-linear stability of pure radiation cosmologies
Creators: name: Lübbe, C.
name: Kroon, J. A. Valiente
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The conformal Einstein equations for a tracefree (radiation) perfect fluid are derived in terms of the Levi-Civita connection of a conformally rescaled metric. These equations are used to provide a non-linear stability result for de Sitter-like tracefree (radiation) perfect fluid Friedman-Lema\^ıtre-Robertson-Walker cosmological models. The solutions thus obtained exist globally towards the future and are future geodesically complete.
description: 21 pages
title: Über strömungstechnische Grundlagen zur Bestimmung von Steuereigenschaften
title: On Fluid-Mechanical Principles for the Determination of Steering Properties
titleType: AlternativeTitle
Creators: name: Thieme, Hans
Publisher: name: TUHH Universitätsbibliothek
Year: 1954
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Über strömungstechnische Grundlagen zur Bestimmung von Steuereigenschaften
description: On Fluid-Mechanical Principles for the Determination of Steering Properties
Geology of the Christina Lake area, southeastern British Columbia
Creators: name: Acton, Shannon Lee
Publisher: name: University of Calgary
Year: 1998
Subjects: subject: QE187 .A29 1998
subject: Additional Copy: QE185 .B84 1998 in the Gallagher Library of Geology and Geophysics
subject: Geology--British Columbia--Christina Lake.
subject: Geology, Stratigraphic - Triassic
subject: Christina Lake (B.C.)

description: Bibliography: p. 96-102.
Worst case execution time oriented code optimization of hard real-time multicore systems
Creators: name: Oehlert, Dominic
Publisher: name: TUHH Universitätsbibliothek
Year: 2021
Subjects: subject: WCET
subject: Multi-core
subject: real-time
subject: optimization
classificationCode: 620
subject: Ingenieurwissenschaften

description: Diese Arbeit präsentiert neue Compiler-basierte Optimierungsansätze auf unterschiedlichen Abstraktionsebenen für Multi-Core-Systeme, um deren Echtzeitfähigkeit zu verbessern. Zur Erhöhung der Skalierbarkeit von Optimierungen und Analysen mit Einblick auf die mikroarchitekturielle Ebene wird außerdem eine auf ILP basierende Ableitung von Metriken für Zugriffe auf geteilte Ressourcen vorgestellt. Die Evaluationsergebnisse zeigen, dass die präsentierten Optimierungen in vielen Fällen die Echtzeitfähigkeit von Multi-Core-Systemen signifikant verbessern können.
description: This thesis introduces new compiler-based optimization approaches for multi-core systems to improve their hard real-time characteristics on varying levels of abstraction. To increase scalability of optimizations and analyses with an insight into the microarchitectural level, an ILP-based derivation of shared resource access metrics is introduced. The evaluation results show, that in many cases, the optimization approaches introduced in this thesis can significantly improve the hard real-time characteristics of multi-core systems.
Regional-scale hydrogeology of lower Cretaceous to middle Devonian aquifiers in southeastern Alberta
Creators: name: Anfort, Stephen J.
Publisher: name: University of Calgary
Year: 1998
Subjects: subject: GB1030 .A4 A54 1998A
subject: Additional Copy: GB1030 .A4 A54 1998 in the Gallagher Library of Geology and Geophysics
subject: Hydrogeology - Alberta - Morley

description: Bibliography: p. 154-161
description: UARC
Simulation of Neubauer et al. 2003
Creators: name: Karsten, Jonas
name: Böhme, Mike
name: Ohlhoff, Carsten
name: Mora, Enver Felix Loayza
Publisher: name: Zenodo
Year: 2020

description: Simulation if Model developed by Neubauer et al. 2003: Metabolic Load of Recombinant Protein Production: Inhibition of Cellular Capacities for Glucose Uptake and Respiration After Induction of a Heterologous Gene in Escherichia coli
Automatização de Processos como Estratégia de Redução de Custos e Aumento de Eficiência: Uma Análise Integrada com Práticas de Melhoria Contínua
Creators: name: Kellner Serralheiro, Fátima
Publisher: name: Zenodo
Year: 2025

description: Fátima Serralheiro Kellner é advogada com especialização em Direito Empresarial e ampla atuação em gestão administrativa e financeira nos EUA. Destaca-se pela liderança estratégica, inovação, fluência em mandarim e experiência no setor público e privado.
Distribution of Accreting Gas and Angular Momentum onto Circumplanetary Disks
Creators: name: Tanigawa, Takayuki
name: Ohtsuki, Keiji
name: Machida, Masahiro N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We investigate gas accretion flow onto a circumplanetary disk from a protoplanetary disk in detail by using high-resolution three-dimensional nested-grid hydrodynamic simulations, in order to provide a basis of formation processes of satellites around giant planets. Based on detailed analyses of gas accretion flow, we find that most of gas accretion onto circumplanetary disks occurs nearly vertically toward the disk surface from high altitude, which generates a shock surface at several scale heights of the circumplanetary disk. The gas that has passed through the shock surface moves inward because its specific angular momentum is smaller than that of the local Keplerian rotation, while gas near the midplane in the protoplanetary disk cannot accrete to the circumplanetary disk. Gas near the midplane within the planet's Hill sphere spirals outward and escapes from the Hill sphere through the two Lagrangian points L$_1$ and L$_2$. We also analyze fluxes of accreting mass and angular momentum in detail and find that the distributions of the fluxes onto the disk surface are well described by power-law functions and that a large fraction of gas accretion occurs at the outer region of the disk, i.e., at about 0.1 times the Hill radius. The nature of power-law functions indicates that, other than the outer edge, there is no specific radius where gas accretion is concentrated. These source functions of mass and angular momentum in the circumplanetary disk would provide us with useful constraints on the structure and evolution of the circumplanetary disk, which is important for satellite formation.
description: 22pages, 17 figures, accepted for publication in ApJ
Frequency response analysis of heat and mass transfer in adsorbent composites and simplified performance estimation for heat transformation applications
Creators: name: Laurenz, Eric
Publisher: name: TUHH Universitätsbibliothek
Year: 2021
Subjects: subject: Adsorption Dynamics
subject: Adsorption kinetics
subject: Frequency Response Analysis
subject: Thermal Conductivity
subject: Effective Thermal Resistances
subject: Modelling
classificationCode: 600
subject: Technik
classificationCode: 620
subject: Ingenieurwissenschaften

description: Die Adsorption von Kältemitteln an festen Adsorbentien lässt sich für umweltfreundliche Kühl- und Heizlösung anwenden. Die Frequenzganganalyse wird erweitert und angewendet, um Adsorptionsdynamik und -gleichgewicht von Wasser auf der metallorganischen Gerüstverbindung Aluminiumfumarat zu untersuchen. Basierend auf den erhaltenen ladungs- und temperaturabhängigen Transportparametern werden effektive Wärmedurchgangswiderstände von 1–‍4‍ (m2 K)/kW berechnet, etwa eine Größenordnung niedriger als die einer Silikagel-Schüttung, dem aktuellen Stand der Technik. Auf Wärmeübertragerebene ergeben sich damit spezifische Kühlleistungen von 0,2–0,7 kW/l.
description: The adsorption of refrigerants on solid adsorbents can be applied in environmentally friendly solutions for cooling or heating demands. The frequency response analysis is extended and applied to investigate the adsorptions dynamics and the adsorption equilibrium of water on coatings with the metal–organic framework (MOF) aluminium fumarate. Based on the obtained loading- and temperature-dependent heat and mass transfer parameters, effective thermal resistances of 1–4 (m2 K)/kW are calculated, about one order of magnitude lower than state-of-the art silica gel beds. A design case study yields specific cooling powers of 0.2–0.7 kW/l at heat exchanger level.
Cosmological post-Newtonian approximation compared with perturbation theory
Creators: name: Noh, Hyerim
name: Hwang, Jai-chan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compare the cosmological first-order post-Newtonian (1PN) approximation with the relativistic cosmological linear perturbation theory in a zero-pressure medium with the cosmological constant. We compare equations and solutions in several different gauge conditions available in both methods. In the PN method we have perturbation equations for density, velocity and gravitational potential independently of the gauge condition to 1PN order. However, correspondences with these 1PN equations are available only in certain gauge conditions in the perturbation theory. Equations of perturbed velocity and the perturbed gravitational potential in the zero-shear gauge exactly coincide with the Newtonian equations which remain valid even to 1PN order (the same is true for perturbed velocity in the comoving gauge), and equations of perturbed density in the zero-shear gauge and the uniform-expansion gauge coincide to 1PN order. We identify other correspondences available in different gauge conditions of the perturbation theory.
description: 9 pages, submitted to ApJ
Unlocking the emancipatory potential of urban planning : a case study of the Ontario Municipal Board
Creators: name: Munn-Rivard, Laura
Publisher: name: University of British Columbia
Year: 2009

description: The modernist planning theory of the Chicago School cannot effectively deal with the challenges presented by cities of diversity. Leonie Sandercock’s planning theory unlocks planning’s emancipatory potential by showing how urban planning bodies manage the different identities in cities. Using a case study of the Ontario Municipal Board, I will seek to apply Jane Jacobs’ invocation of people centered design using the particular framework provided by Sandercock; in this way, I will analyze the degree to which the OMB’s planning process and decisions reinforce existing power structures. I will be arguing that the process and decisions of the Ontario Municipal Board fail to reflect Sandercock’s proposal of a new emancipatory urban planning approach. First, I will examine the evolution from modernist planning to Sandercock’s planning theory. The OMB’s process and decisions will then be analysed, in light of these theories, which will lead to some concluding thoughts on how to renew the Board in the face of its failure to fit into the new urban planning theory. During this analysis, four ways emerge in which the OMB must change; there must be a greater focus on practical wisdom, there must be better acceptance of multiple publics, the OMB must use more mediation with a focus on history, and the guiding legislation for the OMB needs to be rewritten.
Challenges and Prospects for the CPTPP in a Changing Global Economy: Taiwanese Accession and Canada’s Role
Creators: name: Stephens, Hugh
Publisher: name: The School of Public Policy Publications
Year: 2020

description: The Comprehensive and Progressive Trans-Pacific Partnership (CPTPP), which entered into force on December 20, 2018 for the six of the eleven signatories that had completed ratification at that time (Australia, Canada, Japan, Mexico, New Zealand and Singapore) is a beacon of hope in a dark protectionist landscape. The CPTPP advances the trade and investment liberalization agenda at a time when protectionist measures by some major trading countries are threatening to undo decades of progress. With respect to Taiwan, the Taiwanese government has made no secret of its interest in accession to the CPTPP. Taiwanese accession should be pursued because it is in the interest of Canada and the other members of the CPTPP to add to the strength of the organization by welcoming an economy like Taiwan that is an important global trader, a key player in global supply chains and is willing and able to accept CPTPP disciplines. Canada is the second largest economy in the CPTPP and can play an important role in getting the accession process started, including supporting the extension of an invitation to Taiwan to begin negotiations. It’s time to move from talk to action.
description: The School of Public Policy Publications, Том 13 (2020)
Management and Storage of 3D Data
Creators: name: Boyer, Doug
name: Fernandez, Rachel
name: Lassere, Monique
name: McIntosh, Marcia
name: Moore, Jennifer
name: McManamon, Francis
name: Rozo, Albert
name: Swanson, Todd P.
name: Webbink, Kate
Publisher: name: Association of College & Research Libraries
Year: 2021
Subjects: subject: Data Management
valueUri: https://core.tdar.org/browse/other-keyword/32016/data-management
subject: Community Standards
valueUri: https://core.tdar.org/browse/other-keyword/165843/community-standards
subject: CS3DP
valueUri: https://core.tdar.org/browse/other-keyword/165923/cs3dp
subject: 3D Curation
valueUri: https://core.tdar.org/browse/other-keyword/165841/3d-curation
subject: 3D Creation
valueUri: https://core.tdar.org/browse/other-keyword/165842/3d-creation
subject: Data Preservation
valueUri: https://core.tdar.org/browse/other-keyword/138344/data-preservation

description: The challenge of managing 3D data for long-term preservation is one that many repository managers are grappling with as the technologies for creating 3D products become more accessible. This chapter aims to discuss the unique features of 3D data management and how repository managers are currently wrestling with 3D. Discussion of current data management standards are placed alongside responses collected through an international informational survey of 3D data managers and creators in the winter of 2018-2019, and concludes with recommendations for 3D data preservation. The survey respondents provided details on the systems and platforms used to store 3D data, how preservation packages are composed, what cost mode ls are used to finance its creation and storage, and other areas of interest, including data types, and retention methods. Readers will take away from this chapter an understanding of how the management of 3D data differs from other types, how creators can take an active role in the preservation of their 3D data, how existing managers are managing their data, and what recommendations serve as best practices in the work of preserving these assets.
Analysis of a Fast Fourier Transform Based Method for Modeling of Heterogeneous Materials
Creators: name: Vondřejc, J.
name: Zeman, J.
name: Marek, I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Numerical Analysis (math.NA)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The focus of this paper is on the analysis of the Conjugate Gradient method applied to a non-symmetric system of linear equations, arising from a Fast Fourier Transform-based homogenization method due to (Moulinec and Suquet, 1994). Convergence of the method is proven by exploiting a certain projection operator reflecting physics of the underlying problem. These results are supported by a numerical example, demonstrating significant improvement of the Conjugate Gradient-based scheme over the original Moulinec-Suquet algorithm.
description: 8 pages, 2 figures
Secular evolution and a non-evolving black hole to galaxy mass ratio in the last 7 Gyr
Creators: name: Cisternas, Mauricio
name: Jahnke, Knud
name: Bongiorno, Angela
name: Inskip, Katherine J.
name: Impey, Chris D.
name: Koekemoer, Anton M.
name: Merloni, Andrea
name: Salvato, Mara
name: Trump, Jonathan R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new constraints on the ratio of black hole (BH) mass to total galaxy stellar mass at 0.3
description: 7 pages, 4 figures, accepted for publication in ApJ Letters
Post-materialism in western Canada
Creators: name: Kapel, Barbara Zofia
Publisher: name: Social Sciences
Year: 1997
Subjects: subject: FC3243.9 R45 K37 1997
subject: Regionalism - Canada
subject: Canada, Western - Politics and government - Caricatures and cartoons
subject: Canada, Western--Regionalism.

description: Bibliography: p. 86-88
Enhancing the activity of platinum: investigating the effects of alloyed, strained and nanostructured fuel cell electrocatalysts
Creators: name: McKeown, Cian
Publisher: name: University of Limerick
Year: 2023
Subjects: Classical physics

description: In this article-based thesis, we investigate the synthesis and characterisation of Pt-based electrocatalysts for fuel cell electrodes. The aim of this research is to enhance the electrocatalytic activity of pure Pt by modifying it in the following ways: combining it with a second metal; applying strain; and nanostructuring. This thesis comprises six journal articles that further the understanding of enhanced catalytic activity by providing new physical insight into the electrochemical processes that occur on fuel cell electrodes. Combining Pt with a second metal can enhance electrocatalytic activity while reducing the amount of Pt required for a variety of processes. We use magnetron sputtering to deposit Fe-Pt alloy thin films and investigate their activity as electrocatalysts for the oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR). Bimetallic Pt-Au film electrocatalysts were synthesised and investigated for the formic acid oxidation reaction (FAOR). Inducing strain in a Pt electrocatalyst is known to increase its activity for methanol oxidation, however up until now the reason for this was unclear. In this study, we use electroless deposition to grow thin films of Pt with varying thickness and investigate the effect of strain on MOR activity. We find a direct relationship between the amount of compressive strain and the methanol surface coverage of the Pt electrocatalysts. This original contribution to knowledge clarifies the role of strain in enhancing the MOR. Electrocatalytic nanostructures grown in this research exhibit high activity and durability for methanol oxidation due to their high surface area, specific morphology and exposed crystal facets. In this study, we use electroless deposition to grow an interconnected network of Pt and Fe-Pt nanotubes and obtain maximum MOR activity of 1.43 mA cm-2 and 21.4 mA cm-2 in acidic and alkaline media, respectively.
CONTENT AND LANGUAGE INTEGRATED LEARNING (CLIL) FOR FUTURE SPECIALISTS IN THE FIELD OF NATURAL SCIENCES
Creators: name: Kuralov, Kakhramon
Publisher: name: Zenodo
Year: 2023

description: Thіs paper explores language іn the natural scіence subjects of Bіology, Physіcs and Chemіstry іn the secondary currіculum, outlіnes ways for іdentіfyіng thіs language, where to look for іt and how to record іt and makes suggestіons about what the іmplіcatіons are for second language learners of these scіence subjects іn terms of task іn the classroom.
Patient vs. proxy reports: response concordance on objective and subjective indices of quality of life in schizophrenia
Creators: name: Khatri, Nasreen
Publisher: name: Social Sciences
Year: 1998
Subjects: subject: RC514 .K47 1998
subject: Schizophrenia--Prognosis.
subject: Quality of life--Schizophrenics.

description: Bibliography: p. 62-69
An Insight into Spreadsheet User Behaviour through an Analysis of EuSpRIG Website Statistics
Creators: name: Croll, Grenville J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: The European Spreadsheet Risks Interest Group (EuSpRIG) has maintained a website almost since its inception in 2000. We present here longitudinal and cross-sectional statistics from the website log in order to shed some light upon end-user activity in the EuSpRIG domain.
description: 10 Pages, 5 Tables, 2 Colour Figures, ISBN 978-0-9566256-9-4
Analytische Behandlung von Eigenspannungszuständen auf der Grundlage der Elastizitätstheorie
Creators: name: Schimmöller, Heinrich
Publisher: name: TUHH Universitätsbibliothek
Year: 1992
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Analytische Behandlung von Eigenspannungszuständen auf der Grundlage der Elastizitätstheorie
Optical absorption in graphene integrated on silicon waveguides
Creators: name: Li, Huan
name: Anugrah, Yoska
name: Koester, Steven J.
name: Li, Mo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: To fully utilize graphene's remarkable optical properties for optoelectronic applications, it needs to be integrated in planar photonic systems. Here, we demonstrate integration of graphene on silicon photonic circuits and precise measurement of the optical absorption coefficient in a graphene/waveguide hybrid structure. A method based on Mach-Zehnder interferometry is employed to achieve high measurement precision and consistency, yielding a maximal value of absorption coefficient of 0.2 dB/μm when graphene is located directly on top of the waveguide. The results agree with theoretical model utilizing the universal ac conductivity in graphene. Our work provides an important guide for the design and optimization of integrated graphene optoelectronic devices.
description: 14 pages, 4 figures
Performance of Lookup Operations in a Hypercube-based P2P Data Store: Theoretical Model and Performance Evaluation
Creators: name: Fahrenholtz, Dietrich
name: Wombacher, Andreas
name: Turau, Volker
Publisher: name: TUHH Universitätsbibliothek
Year: 2005
Subjects: subject: Verteilte Systeme, Simulation
subject: Distributed Systems
subject: Peer-to-Peer data store
subject: Performance Evaluation
subject: Simulation
subject: Hypercube
subject: DHT
subject: Probabilistic Analysis
subject: Lookup Operation
subject: Peer-to-Peer-Netz
classificationCode: C.2.4
subject: Distributed Systems
classificationCode: E.1
subject: DATA STRUCTURES

description: Eine Möglichkeit wie Peer-to-Peer-Datenspeicher Hochverfügbarkeit ihrer Daten gewährleisten können, ist, diese Daten zu replizieren. Das ist notwendig um den Auswirkungen der Schwankungen der Peer-Population entgegenwirken zu können. Eine Konsequenz dieser Schwankungen ist, dass ein Peer möglicherweise Suchanfragen nach einem Datum mehr als einmal stellen muss, um dieses zu finden, was zur Folge hat, dass zusätzliche Kommunikation notwendig wird.
 Ein formales Modell bezüglich dieser Art von Kommunikation wird in diesem Forschungsbericht eingeführt, analysiert und evaluiert mit Hilfe von Simulation. Der Ergebnisse beziehen sich auf unser Hypercube-basiertes Peer-to-Peer-Netzwerk.
description: One way for Peer-to-Peer data stores to achieve high data availability is to replicate their data. This is necessary to counter the effects of peer population dynamics also known as churn. A consequence of churn is that locating a data item may require a peer to resend search messages thus introducing additional communication. A formal model of this communication pertaining to data item lookups is introduced and evaluated using simulation in this paper. Results hold true for hypercube-based P2P data stores.
Modelling interaction of relativistic and non-relativistic winds in binary system PSR B1259-63/SS2883 - II. Impact of magnetization and anisotropy of the pulsar wind
Creators: name: Bogovalov, S.
name: Khangulyan, D.
name: Koldoba, A. V.
name: Ustyugova, G. V.
name: Aharonian, F. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this paper, we present a numerical study of the properties of the flow produced by the collision of a magnetized anisotropic pulsar wind with its environment in binary system. We compare the impact of both the magnetic field and the wind anisotropy to the benchmark case of a purely hydrodynamical (HD) interaction of isotropic winds, which has been studied in detail by Bogovalov et al. (2008). We consider the interaction in axisymmetric approximation, i.e. the pulsar rotation axis is assumed to be oriented along the line between the pulsar and the optical star and the effects related to the pulsar orbiting are neglected. The impact of the magnetic field is studied for the case of weak magnetization (with magnetization parameter $σ<0.1$), which is consistent with conventional models of pulsar winds. The effects related to anisotropy in pulsar winds are modeled assuming that the kinetic energy flux in a non-magnetized pulsar wind is strongly anisotropic, with the minimum at the pulsar rotation axis and the maximum in the perpendicular direction. We show that, although both considered effects change the shape of the region occupied by the terminated pulsar wind, their impact appears to be small. In particular, for the magnetization of the pulsar wind below 0.1, the magnetic field pressure remains well below the plasma pressure in the post-shock region. Thus, in the case of interaction of a pulsar with the stellar wind environment (opposite to the case of plerions, i.e. the pulsar interaction with the interstellar medium, when the magnetic field becomes dynamically important independently on the wind magnetization) the HD approach represents a feasible approximation for numerical modelling.
description: 14 pages, 5 figures, submitted to MNRAS
Anatomy of a paleokarst reservoir: Sedimentation and diagenesis of the pekisko formation in Twining oil field, Alberta, Canada
Creators: name: Reid, Susan J.
Publisher: name: University of Calgary
Year: 1998
Subjects: subject: GB600.4 .C2 R45 1998A
subject: Additional Copy: GB600.4 .C2 R45 1998 (Gallagher)
subject: Sedimentation and deposition - Alberta - Pekisko Formation
subject: Reservoir sedimentation - Alberta - Pekisko Formation
subject: Diagenesis - Alberta - Pekisko Formation
subject: Geology, Stratigraphic - Mississippian
subject: Pekisko Formation (Alta.)

description: Bibliography: p. 183-195.
title: Robust Smartphone Assisted Biosensing Based on Asymmetric Nanofluidic Grating Interferometry
Creators: name: Purr, Foelke
name: Eckardt, Max-Frederik
name: Kieserling, Jonas
name: Gronwald, Paul-Luis
name: Burg, Thomas P.
name: Dietzel, Andreas
Publisher: name: MDPI
Year: 2023

description: Point-of-care systems enable fast therapy decisions on site without the need of any healthcare infrastructure. In addition to the sensitive detection, stable measurement by inexperienced persons outside of laboratory facilities is indispensable. A particular challenge in field applications is to reduce interference from environmental factors, such as temperature, to acceptable levels without sacrificing simplicity. Here, we present a smartphone-based point-of-care sensor. The method uses an optofluidic grating composed of alternating detection and reference channels arranged as a reflective phase grating. Biomolecules adsorbing to the detection channel alter the optical path length, while the parallel reference channels enable a direct common mode rejection within a single measurement. The optical setup is integrated in a compact design of a mobile readout device and the usability is ensured by a smartphone application. Our results show that different ambient temperatures do not have any influence on the signal. In a proof-of concept experiment we measured the accumulation of specific molecules in functionalized detection channels in real-time and without the need of any labeling. Therefore, the channel walls have been modified with biotin as capture molecules and the specific binding of streptavidin was detected. A mobile, reliable and robust point-of-care device has been realized by combining an inherently differential measurement concept with a smartphone-based, mobile readout device.
Oszillographische Aufzeichnung von Wasserwellen
Creators: name: Baumann, Hellmut
Publisher: name: TUHH Universitätsbibliothek
Year: 1954
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Oszillographische Aufzeichnung von Wasserwellen
The stellar activity-rotation relationship and the evolution of stellar dynamos
Creators: name: Wright, Nicholas J.
name: Drake, Jeremy J.
name: Mamajek, Eric E.
name: Henry, Gregory W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a sample of 824 solar and late-type stars with X-ray luminosities and rotation periods. This is used to study the relationship between rotation and stellar activity and derive a new estimate of the convective turnover time. From an unbiased subset of this sample the power law slope of the unsaturated regime, L_X / L_bol = Ro^β, is fit as β= -2.70 +/- 0.13. This is inconsistent with the canonical β=-2 slope to a confidence of 5 sigma, and argues for an additional term in the dynamo number equation. From a simple scaling analysis this implies ΔΩ/ Ω= Ω^0.7, i.e. the differential rotation of solar-type stars gradually declines as they spin down. Super-saturation is observed for the fastest rotators in our sample and its parametric dependencies are explored. Significant correlations are found with both the corotation radius and the excess polar updraft, the latter theory providing a stronger dependence and being supported by other observations. We estimate mass-dependent empirical thresholds for saturation and super-saturation and map out three regimes of coronal emission. Late F-type stars are shown never to pass through the saturated regime, passing straight from super-saturated to unsaturated X-ray emission. The theoretical threshold for coronal stripping is shown to be significantly different from the empirical saturation threshold (Ro < 0.13), suggesting it is not responsible. Instead we suggest that a different dynamo configuration is at work in stars with saturated coronal emission. This is supported by a correlation between the empirical saturation threshold and the time when stars transition between convective and interface sequences in rotational spin-down models.
description: Accepted for publication in ApJ. 17 pages, 7 figures, 3 tables
InnoRenew CoE Newsletter
Creators: name: Simmons, Amy
Publisher: name: Zenodo
Year: 2019

description: December 2019 Issue 4, InnoRenew CoE Newsletter containing an announcement of the new open access, peer-reviewed journal Interdisciplinary Perspectives on the Built Environment (IPBE) and upcoming events, such as InnoRenew CoE International Conference 2020, “Integrating sustainability and health in buildings through renewable materials”, 9th National Symposium of NIR Spectroscopy (NIRITALIA 2020), and Society of Wood Science and Technology (SWST) 63rd International Convention.
Nonrepetitive Colourings of Planar Graphs with $O(\log n)$ Colours
Creators: name: Dujmović, Vida
name: Frati, Fabrizio
name: Joret, Gwenaël
name: Wood, David R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: A vertex colouring of a graph is \emph{nonrepetitive} if there is no path for which the first half of the path is assigned the same sequence of colours as the second half. The \emph{nonrepetitive chromatic number} of a graph $G$ is the minimum integer $k$ such that $G$ has a nonrepetitive $k$-colouring. Whether planar graphs have bounded nonrepetitive chromatic number is one of the most important open problems in the field. Despite this, the best known upper bound is $O(\sqrt{n})$ for $n$-vertex planar graphs. We prove a $O(\log n)$ upper bound.
Evaluation of a new radio frequency identification tag for subdermal implantation
Creators: name: Azad, Farhan
Publisher: name: University of British Columbia
Year: 2009

description: This research was aimed at examining the readiness of a prototype implantable tag of dimensions 39 mm x 24 mm x 4.1 mm designed to operate at 915 MHz for monitoring the movement of young sea lions and seals. Several issues had to be resolved, and they include developing and testing a suitable communication protocol between the base station and tag, and way of providing power to the tag. Engineering issues related to longevity of the implantable tag, and power radiated by the loop antenna of the implantable tag in its alumina enclosure, under skin and under the fat underlying the skin, also, had to be addressed. Finally issues related to how data from the tag could be best recorded at haul outs and rookeries were examined. A working prototype of an implantable tag was obtained by reducing the height of the loop antenna by 2 mm and changing the capacitor values in the matching network to 0.2 pF. Field tests using a base station that accepted signal strengths up to -60 dBm indicated that the tag’s range was a maximum of 500 m when it was operated out of a body at a data rate of 1 kbps and the height of the base station antenna was more than 5 m. When the prototype was implanted within its alumina housing under the skin of cavernous tissue, the range of the device fell to an acceptable 180 m. A lifetime model indicated that the longevity of the tag would meet the three year target if it were to be operated using a data rate of 1 kbps, transmission interval of 15 min, packet size of 104 bits and battery capacity of 72 mAh. The lifetime model was verified at the same temperature as a sea lion. A link budget model was developed for the prototype tag, and was used to estimate the performance of the implantable in the sea lion’s environment.
The origin of the enigmatic Beaver River sandstone
Creators: name: Tsang, Brian Wing Bun
Publisher: name: University of Calgary
Year: 1998
Subjects: subject: QE471.15.S25 T73 1998
subject: Sandstone - Alberta
subject: Alluvium - Alberta - Highwood River Region
subject: Peace River (Alberta)
subject: Athabasca Region (Alberta)

description: Bibliography: p. 154-162