cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Towards a measurement of the electric dipole moment of the electron with YbF molecules
Creators: name: Ho, Christopher Junhong
Publisher: name: Imperial College London
Year: 2020

description: The search for electric dipole moments (EDMs) of particles has been an active field of research for the past 70 years. Scientific interest in EDMs stems from the fact that these are direct signals of parity symmetry (P) violation, and time-reversal symmetry (T) violation. In most extensions to the Standard Model, new CP-violating interactions that can help explain the origin of the observed matter-antimatter asymmetry in the universe also predict particle EDMs with sizes that current and near-future experiments are sensitive to. The current best measurements of the electron EDM (eEDM) have already constrained the energy scale of a broad class of CP-violating interactions to energies above 3 TeV. I describe progress towards a measurement of the eEDM using a beam of YbF molecules. I implement a method that distills the molecular population into the required quantum state, and a new method for detecting the molecules with higher efficiency. I characterise the imperfections in this detection scheme. By minimising the impact of these imperfections and various sources of technical noise, I demonstrate an improvement in the shot-noise limited sensitivity by a factor of 14.5 since the last published measurement. The actual noise is limited by magnetic noise to 2.1 times this shot-noise limit. A measurement of the eEDM at this shot-noise-limited sensitivity would improve constraints of new CP-violating interactions by a factor of 3.2, and I present an outlook for such a measurement.
Observing complex bound states in the spin-1/2 Heisenberg XXZ chain using local quantum quenches
Creators: name: Ganahl, Martin
name: Rabel, Elias
name: Essler, Fabian H. L.
name: Evertz, Hans Gerd
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the non-equilibrium evolution in the spin-1/2 XXZ Heisenberg chain for fixed magnetization after a local quantum quench. This model is equivalent to interacting spinless fermions. Initially an infinite magnetic field is applied to n consecutive sites and the ground state is calculated. At time t=0 the field is switched off and the time evolution of observables such as the z-component of spin is computed using the Time Evolving Block Decimation (TEBD) algorithm. We find that the observables exhibit strong signatures of linearly propagating spinon and bound state excitations. These persist even when integrability-breaking perturbations are included. Since bound states ("strings") are notoriously difficult to observe using conventional probes such as inelastic neutron scattering, we conclude that local quantum quenches are an ideal setting for studying their properties. We comment on implications of our results for cold atom experiments.
description: 4+ pages, 5 figures. (Added affiliations)
Drawing On The Right Side Of The Brain: A Voxel-Based Morphometry Study Of Individual Differences In Drawing And Local Processing Ability
Creators: name: Chamberlain, Rebecca
name: McManus, I Chris
name: Brunswick, Nicola
name: Kanai, Ryota
Publisher: name: Zenodo
Year: 2014
Subjects: Voxel-based morphometry, drawing, local processing, cerebellum

description: The relationship between individual differences in brain structure and expert abilities has been demonstrated in a number of domains including visual perception, spatial navigation, complex motor skills and musical ability. However research into neural differences associated with skill in visual art is scarce. The aim of this study was to investigate whether there would be any differences in brain structure in relation to increasing representational drawing skill in a diverse group of training artists. The relationship between brain structure and drawing skill was then examined in relation to local perceptual processing abilities in order to explore existing behavioral evidence that local processing facilitates drawing ability (Drake & Winner, 2011; Chamberlain et al, 2013). A cohort of graduate and post-graduate art students and non-art students completed drawing tasks, the embedded figures task and the block design task. Scores on these tasks were then correlated with the regional grey and white matter volume in cortical and subcortical structures. An increase in grey matter density in the cerebellum was observed in relation to observational drawing ability which was independent of artistic training, suggesting an enhancement of fine motor control and procedural memory. Furthermore, overlap in medial frontal regions associated with performance on local processing tasks and drawing suggest that drawing may be facilitated by the suppression of bias toward global perceptual processing in action selection. The findings corroborate small-scale fMRI studies of online drawing and provide insights into the properties of the developing artistic brain.
Seismic Attribute Characterization of Monteith Formation -Tight Gas Sandstones in the Western Canada Sedimentary Basin, Alberta, Canada.
Creators: name: Castillo, Fernando
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Geophysics
subject: FOS: Earth and related environmental sciences
subject: Tight Gas
subject: Monteith
subject: Characterization
subject: Seismic
subject: Attribute

description: A method is presented that integrates a triple porosity model with sonic, density and resistivity logs for evaluation of tight gas formations. The interpretation takes into account results from petrographic work in the Western Canada Sedimentary Basin (WCSB), which indicate that tight rocks are comprised of different pores types including (i) intergranular, (ii) slot + microfractures, and (iii) isolated non-effective porosities. Seismic data are powerful in the exploration and production domains but a method that integrates seismic velocities and the observed triple porosity petrographic characteristics of tight gas formations is not available. This work provides the theoretical foundation and development of equations for this integration along with examples using real data from tight gas formations in the WCSB. As part of integration of seismic data and well log formation evaluation, a previously developed methodology is used for calculating a fracture index from conventional well logs. The well log attribute computations are carried out on those wells that have a minimum amount of conventional logs such as caliper, gamma ray, density, neutron, deep and shallow resistivity, micro-resistivity, compressional (P) and shear (S) sonic, and photoelectric potential (PEF) logs. Finally, a post stack seismic inversion is applied on the 2D and 3D seismic data in order to obtain quantitative rock-property description of the reservoir including density and porosity. This inversion has the potential of estimating inter-well formation resistivity, porosity and water saturation to obtain estimates of original gas in place. Under favorable conditions, the partition between effective and non-effective porosity might be estimated.
Is Peripheral Neuropathy occurring in association with Idiopathic Parkinson's Disease, an iatrogenic complication?
Creators: name: Podgorny, Peter Jan
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Neuroscience
subject: Medicine and Surgery
subject: Parkinson's
subject: Neuropathy
subject: Levodopa
subject: Peripheral
subject: Nerves
subject: Iatrogenic

description: Idiopathic Parkinson’s disease (PD) is primarily a movement disorder resulting from the degeneration of dopaminergic neurons within the basal ganglia. However, it is not known if changes occur in PD other than traditional motor signs and symptoms, manifesting as non-motor problems such as autonomic or sensory abnormalities. The additional involvement of the peripheral nervous system in PD has only recently gained appreciation, particularly with a higher prevalence of peripheral neuropathy (PN). The concomitant occurrence of PN in PD has prompted speculation about the cause of PN, whether it has been an overlooked phenomenon of PD or a side effect of treatment with levodopa. The current study will investigate the occurrence of PN in newly diagnosed PD patients not yet treated with levodopa. In addition to gold-standard tests for PN, including neurological physical examination and nerve conduction studies, we will study new and sensitive techniques namely corneal confocal microscopy and skin biopsy, to search for subclinical indications of PN occurring in this patient population.
Protecting the gut against Clostridium difficile: A role for Keratinocyte growth factor
Creators: name: Alhassan, Basmah Faris
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Immunology
subject: FOS: Clinical medicine
subject: Medicine and Surgery
subject: Pathology
subject: Clostridium difficile
subject: Keratinocyte growth factor
subject: KGF
subject: Colitis
subject: Intestinal epithelial cells
subject: Clostridium difficile toxins
subject: Intestinal trefoil factor

description: Clostridium difficle (Cdiff) infection (CDI) causes severe colitis via its toxins: toxin A and toxin B (TcdAB), inducing barrier disruption, inflammation and cell death. Current treatments are failing and the need to search for new targets is urgent. Several host factors have shown to modulate CDI in animals and patients. Intestinal growth factors are a major part of the mucosal host response in the gut. Among them, keratinocyte growth factor (KGF) has been shown to be protective in many colitis models. In this thesis, the protective role of KGF was demonstrated against Cdiff toxin injury. In vitro, KGF protected Caco-2 cells from barrier disruption and cell death induced by TcdAB. Exogenous KGF administration protected mice from acute intestinal toxin damage. Interestingly, KGF deletion did not impact the acute toxin-induced colitis in mice; however, endogenous KGF was essential for normal recovery from TcdAB-induced colitis as KGF−/− mice demonstrated impaired recovery after 24-48 hours post TcdAB exposure. Findings from this study may lead to identifying a cause for the variability in clinical response among patients with CDI as well as new therapeutic targets for this devastating disease.
Discrete-Time Goldfishing
Creators: name: Calogero, Francesco
Publisher: name: arXiv
Year: 2011
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The original continuous-time "goldfish" dynamical system is characterized by two neat formulas, the first of which provides the $N$ Newtonian equations of motion of this dynamical system, while the second provides the solution of the corresponding initial-value problem. Several other, more general, solvable dynamical systems "of goldfish type" have been identified over time, featuring, in the right-hand ("forces") side of their Newtonian equations of motion, in addition to other contributions, a velocity-dependent term such as that appearing in the right-hand side of the first formula mentioned above. The solvable character of these models allows detailed analyses of their behavior, which in some cases is quite remarkable (for instance isochronous or asymptotically isochronous). In this paper we introduce and discuss various discrete-time dynamical systems, which are as well solvable, which also display interesting behaviors (including isochrony and asymptotic isochrony) and which reduce to dynamical systems of goldfish type in the limit when the discrete-time independent variable $\ell=0,1,2,...$ becomes the standard continuous-time independent variable $t$, $0\leq t
Conditional strategies and the evolution of cooperation in spatial public goods games
Creators: name: Szolnoki, Attila
name: Perc, Matjaz
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: The fact that individuals will most likely behave differently in different situations begets the introduction of conditional strategies. Inspired by this, we study the evolution of cooperation in the spatial public goods game, where besides unconditional cooperators and defectors, also different types of conditional cooperators compete for space. Conditional cooperators will contribute to the public good only if other players within the group are likely to cooperate as well, but will withhold their contribution otherwise. Depending on the number of other cooperators that are required to elicit cooperation of a conditional cooperator, the latter can be classified in as many types as there are players within each group. We find that the most cautious cooperators, such that require all other players within a group to be conditional cooperators, are the undisputed victors of the evolutionary process, even at very low synergy factors. We show that the remarkable promotion of cooperation is due primarily to the spontaneous emergence of quarantining of defectors, which become surrounded by conditional cooperators and are forced into isolated convex "bubbles" from where they are unable to exploit the public good. This phenomenon can be observed only in structured populations, thus adding to the relevance of pattern formation for the successful evolution of cooperation.
description: 7 two-column pages, 7 figures; accepted for publication in Physical Review E
Fundamental Physics and Relativistic Laboratory Astrophysics with Extreme Power Lasers
Creators: name: Esirkepov, T. Zh.
name: Bulanov, S. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The prospects of using extreme relativistic laser-matter interactions for laboratory astrophysics are discussed. Laser-driven process simulation of matter dynamics at ultra-high energy density is proposed for the studies of astrophysical compact objects and the early universe.
description: 12 pages, 15 figures. Invited talk at European Conference on Laboratory Astrophysics (ECLA), 26-30 September, 2011, Paris, France. Submitted to European Astronomical Society Publications Series
Absence of bound states implies non-negativity of the scattering length
Creators: name: Seiringer, Robert
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We show that bosons interacting via pair potentials with negative scattering length form bound states for a suitable number of particles. In other words, the absence of many-particle bound states of any kind implies the non-negativity of the scattering length of the interaction potential.
description: LaTeX, 6 pages; minor corrections, remarks and references added
Social interventions to reduce the privacy paradox
Creators: name: Ghosh, Isha
Publisher: name: No Publisher Supplied
Year: 2020

description: Individuals often demonstrate privacy behaviors that are contrary to their concerns about information sharing and use. Literature has termed this phenomenon the “privacy paradox.” In this dissertation we seek to bridge the gap between information privacy concerns and demonstrated disclosure behavior using social interventions. We examined the essential elements of privacy concerns, information disclosure, social influence, privacy interventions, and individual interactions with interventions to study their complex relationships and the daily information disclosure challenges faced by individuals. The major purposes of this dissertation are to revisit the privacy paradox phenomenon, examine the relationships among privacy concerns and information disclosure, use these relationships to design novel interventions, and explore the role of social interventions in bridging the gap between information privacy concerns and behaviors.This goal was realized by conducting a 20 day between-subject field study comparing the effectiveness of interventions based on social-proof and information inconsistency with a base-line to identify the most efficient way of reducing the concern-behavior gap. Findings show that knowledge about peer behavior caused individuals to rethink their own disclosure behavior. Individuals tended to believe that their privacy concerns and information disclosure behaviors are similar to many of their peers. When they received a reminder that their concern-behavior gap was higher than their peers, they were inclined to re-evaluate their privacy concerns and behavior. Findings further showed that while any reminder about information privacy resulted in more privacy sensitive behavior, changing overall privacy concerns was a more nuanced and subtle process often influenced by external or contextual factors. We also examined the effect that different interventions had on the cognitive processes guiding privacy decision making. From a thematic analysis of participant interviews, we were able to delve deeper into understanding how participants interacted with the interventions, the different ways in which each intervention affected privacy concerns and disclosure, and the different design elements that participants reacted to. We discussed shifts in privacy concerns and disclosure in detail breaking apart different elements of the interventions (textual, visual, numeric) and why participants found some of these elements to be more important than other. Finally, we discuss the implications of the concern-behavior gap, and the effectiveness of interventions in achieving this goal.
Global Processing Takes Time: A Meta-Analysis On Local-Global Visual Processing In Asd
Creators: name: Van der Hallen, Ruth
name: Evers, Kris
name: Brewaeys, Katrien
name: Van den Noortgate, Wim
name: Wagemans, Johan
Publisher: name: Zenodo
Year: 2013
Subjects: Autism Spectrum Disorder
Meta-Analysis
Visual Processing
Local-Global

description: This poster was presented at the Applied Vision Association XMAS meeting (December 19th-20th, 2013) and discusses a meta-analysis that was conducted on all empirical studies published on local-global visual processing in ASD between 1983-2013.
description: For more information, please contact ruth.vanderhallen@ppw.kuleuven.be
On the stability of radiation-pressure-dominated cavities
Creators: name: Kuiper, Rolf
name: Klahr, Hubert
name: Beuther, Henrik
name: Henning, Thomas
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: When massive stars exert a radiation pressure onto their environment that is higher than their gravitational attraction, they launch a radiation-pressure-driven outflow. It has been claimed that a radiative Rayleigh-Taylor instability should lead to the collapse of the outflow cavity and foster the growth of massive stars. Aims: We investigate the stability of idealized radiation-pressure-dominated cavities, focusing on its dependence on the radiation transport approach for the stellar radiation feedback. Methods: We compare two different methods for stellar radiation feedback: gray flux-limited diffusion (FLD) and ray-tracing (RT). We also derive simple analytical models to support our findings. Results: Only the FLD cases lead to prominent instability in the cavity shell. The RT cases do not show such instability. The gray FLD method underestimates the opacity at the location of the cavity shell and leads to extended epochs of marginal Eddington equilibrium in the cavity shell, making them prone to the radiative Rayleigh-Taylor instability. In the RT cases, the radiation pressure exceeds gravity by 1-2 orders of magnitude. The radiative Rayleigh-Taylor instability is then consequently suppressed. Conclusions: Treating the stellar irradiation in the gray FLD approximation underestimates the radiative forces acting on the cavity shell. This can lead artificially to situations that are affected by the radiative Rayleigh-Taylor instability. The proper treatment of direct stellar irradiation by massive stars is crucial for the stability of radiation-pressure-dominated cavities.
description: 14 pages, 8 figures, accepted at A&A
The Glue of the City, Designing an Interconnected System of Public Spaces in Calgary’s Centre City
Creators: name: Baghoori, Armaghan
Publisher: name: Environmental Design
Year: 2014
Subjects: subject: Urban and Regional Planning
subject: FOS: Social and economic geography
subject: public space
subject: connectivity
subject: Calgary’s center city
subject: public realm
subject: urban spatial structure

description: Public spaces are one of the major elements that form urban structure. The ability of public spaces to work efficiently in the overall urban system is firmly connected to their placement in a city. Continuity of public spaces can enhance public space quality and bring a sense of unity for the users. The centre city of Calgary (located in Alberta, Canada) is the study site for this research. Calgary, despite its various high quality public spaces, includes many places which are not well connected and that are neglected by pedestrians. An assumption of this research is that if people are provided with a network of public spaces rather than single destinations, this will encourage greater use and lead to a higher quality of public realm. Keywords: Public realm, public space, connectivity, urban spatial structure, Calgary’s center city
Patient-provider communication and perceptions of health risk information in the management of cardiovascular diseases and Diabetes: a scoping review
Creators: name: Dr. Rinkoo Dalan
name: Li-Lian, Winnie Teo
name: Aloysius, Chia Wei-Yan
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Translational Medical Research
subject: Medical Humanities
subject: Medicine and Health
subject: Medicine and Health Sciences
subject: Social and Behavioral Sciences
subject: Sociology
subject: FOS: Sociology

description: This scoping review aims to identify studies that examine how health and risk information is communicated between patients and physicians in the clinical setting. Patient-provider communication has been shown to play an important role in shaping medication adherence, diet, and other lifestyle factors for patients with Diabetes, as well as cardiovascular diseases. Examining the different features of risk communication, such as how it occurs in the clinical setting and its effects, is thus crucial to improve care and behavioural outcomes. The objective of this review is to understand how previous studies have examined risk communication practices in different contexts, to summarise the studies in detail, and to collate the findings of the studies, with a focus on how risk communication is associated with patient behaviours in the management of cardiovascular diseases and Diabetes.
Original data for aerosol transmission modelling
Creators: name: Crawford, Cyril
name: Vanoli, Emmanuel
name: Decorde, Baptiste
name: Lancelot, Maxime
name: Duprat, Camille
name: Josserand, Christophe
name: Jilesen, Jonathan
name: Bouadma, Lila
name: Timsit, Jean-François
Publisher: name: Zenodo
Year: 2020

description: Persistent repository for the original data created for the study "Modeling of aerosol transmission of airborne pathogens in ICU rooms of COVID-19 patients with acute respiratory failure"
Metadata for Language Learning Resources: Advancing OLAC for Language Development
Creators: name: Patterson III, Hugh
name: Barker, Phil
name: Lee, Matthew R.
Publisher: name: Zenodo
Year: 2021

description: Metadata for Language Learning Resources: Advancing OLAC for Language Development
Hugh Patterson III, Phil Barker, & Matthew R. Lee
Presented 5 October 2022 at the Berlin-Brandenburg Academy of Sciences and Humanities at the Conference Where Do We Need to Go From Here? - Language Documentation and Archiving,  in the UNESCO International Decade of Indigenous Languages
Landscapes of change: the ecology of white-faced capuchins over space and time
Creators: name: Campos, Fernando Alonso
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Anthropology--Physical
subject: Ecology
subject: FOS: Biological sciences
subject: Zoology
subject: Primates
subject: foraging
subject: movement ecology
subject: climate change
subject: seasonality
subject: GIS
subject: Landscape Ecology
subject: predation
subject: neotropics
subject: Home Range
subject: behavioral ecology

description: As global change accelerates, there is a growing imperative to understand how wild animals respond to changing environments. I investigated how environmental variability, both in the short term (seasonality and habitat differences) and the long term (changing climate and habitats), shapes the behavioral ecology of white-faced capuchins (Cebus capucinus) in a highly seasonal dry forest mosaic in Costa Rica. I used a multi-scale approach with the ultimate goal of gaining a more complete understanding of how individual-level selective pressures scale up over space and time to affect group and population dynamics. Perceived predation risk, based on alarm-call responses to distinct predator classes, varied among habitat types and was greatest in mature forest. The capuchins adjusted their anti-predator vigilance behavior to changing levels of perceived risk. Feeding efficiency varied over both space and time and was greatest during the wet season and in mature forest habitats, which were both associated with higher energy intake rates and lower energy expenditure rates. The hot dry season also favored smaller home ranges, with high-use zones concentrated around patches of mature evergreen forest. These findings demonstrate that environmental variability plays a key role in driving the spatial ecology of capuchin individuals and groups. Because the dry season is associated with greater energetic deficits, the capuchins' increased preference for mature forest and more compact use of space during the dry season may be a behavioral adjustment aimed at maximizing use of the most productive foraging areas and reducing travel, perhaps at the expense of safety. Finally, I examined spatial and demographic patterns in the growing capuchin population over multiple decades in relation to quantitative information on how the environment changed over the same period. The availability of evergreen habitats varied with the strength of the previous wet season, which in turn was strongly coupled with global climatic and oceanic cycles. Following extreme drought periods, population growth slowed, mean group size decreased, and reproductive rate declined. Future work will aim to develop a deeper understanding of how climate change will affect primate populations and to expand the scope and generality of this research to a global scale.
Pair production of the heavy leptons associated with a gauge boson gamma or Z at the ILC
Creators: name: Zeng, Qing-Guo
name: Yue, Chong-Xing
name: Zhang, Jiao
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The T-odd leptons are the typical particles predicted by the littlest Higgs model with T-parity (LHT model) and the observation of these particles might be regarded as the direct evidence of the LHT model. In this paper, we investigate the production of a pair of T-odd leptons associated with a gauge boson $V$($γ$ or $Z$) at the international linear $e^{+}e^{-}$ collider (ILC). The numerical results show that the possible signals of the T-odd leptons may be detected in the future ILC experiments.
description: References added, published version
GLOBAL DATABASE TRANSFORMATION IN EDUCATION
Creators: name: Olimova, Bahоra
Publisher: name: Zenodo
Year: 2023

description: In this article, the importance and relevance of creating a large database in the process of convergence of educational services, as well as their theoretical and practical aspects, are highlighted, and opinions are expressed on this topic.within the framework of the approach based on the economic directions of the knowledge economy, specific theoretical information is given on the formation of competencies for the purpose of training future specialists in the economic direction.
The Determinants of Childhood Injury
Creators: name: Victorino, Charlemaigne
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Public Health
subject: injury
subject: children

description: Unintentional injuries is an important health concern among children in that it is a major cause of hospitalizations and disability in North America, and is the leading cause of death for children in Canada. This is in light of the fact that a majority of unintentional injuries can be avoided. The current literature looking at predictors of unintentional non-fatal injuries has produced mixed findings. This dissertation examines this important topic using large, nationally representative Canadian and American datasets using a social determinants of health framework. The social determinants of health framework allows one to examine a behaviour or outcome in a more holistic manner, therefore getting closer to uncovering the “root” causes of an outcome, as medical sociologists describe it. Focusing on unintentional injuries occurring in/around the home or in a non-recreation/school setting, this topic was analyzed cross-sectionally, longitudinally, and in a cross-national comparison between Canada and the U.S. Cross-sectionally, the key finding was surprisingly a lack of statistically significant findings. One possible reason for this is the cross-sectional nature of the analysis, in that the influence of variables such as family structure may be more relevant when examined longitudinally i.e. as changes over time. Longitudinally, the key finding was that a change in mixed family structure had a significant and independent association with the occurrence of child injury, even after controlling for factors such as employment status and household income. In the cross-national comparison between Canada and the U.S., there was evidence supporting the notion that a country which has a greater emphasis on policies of economic equality (such as Canada), is less likely to see major differences in the occurrence of adverse child health outcomes between differing socio-economic groups. While unintentional injuries among children has an element of randomness, they are nevertheless still related to social factors including family structure and neighbourhood income, particularly among young children. Due to the importance of injuries to children's health, it is essential to use the information from studies such as this when creating and putting in practice injury prevent programs and policies.
Flammability limits of hydrogen-diluent mixtures in air
Creators: name: Terpstra, Mark
Publisher: name: Graduate Studies
Year: 2012
Subjects: subject: Engineering--Mechanical
subject: Flammability
subject: Hydrogen

description: The flammability limits of hydrogen-diluent fuel mixtures in air for upward and downward flame propagation at ambient pressure were determined experimentally. A wide range of diluent concentrations were examined, up to 95% by volume in the fuel mixture. The diluents employed were helium, argon, carbon dioxide and nitrogen. The effects of changes of the initial mixture temperature on the flammability limits were determined for fuel mixtures containing 50% diluent by volume. It was observed that helium was more effective than argon at narrowing the flammable range of hydrogen mixtures. The value of the lean flammability limit was increased to a greater extent by the addition of helium than carbon dioxide despite the low heat capacity of helium. Values of the flammability limits predicted using the constant adiabatic flame temperature concept are in generally good agreement with the experimentally obtained values. The agreement between the two sets of values was better for the rich flammability limits than the corresponding lean flammability limits and was particularly poor for lean mixtures involving high concentrations of helium.
ELAN: Present State and Future Direction
Creators: name: Han Sloetjes
name: Divya Kanekal
Publisher: name: Zenodo
Year: 2022
Subjects: linguistics
language documentation
ELAN
endangered languages

description: ELAN: Present State and Future Direction

Han Sloetjes and Divya Kanekal

Presented 5 October 2022 at the Berlin-Brandenburg Academy of Sciences and Humanities at the Conference Where Do We Need to Go From Here? - Language Documentation and Archiving,  in the UNESCO International Decade of Indigenous Languages
On Lya emission in z~3-6 UV-selected galaxies
Creators: name: Schaerer, Daniel
name: de Barros, Stephane
name: Stark, Daniel P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Determining Lya properties of distant galaxies is of great interest for various astrophysical studies. We examine how the strength of Lya emission can be constrained from broad-band SED fits instead of relying on spectroscopy. We use our SED fitting tool including the effects of nebular emission, considering in particular Lya emission as a free parameter, and we demonstrate our method with simulations of mock galaxies. Using this tool we analyse a large sample of U, B, V, and i dropout galaxies with multi-band photometry. We find significant trends of the fraction of galaxies with Lya emission increasing both with redshift z and towards fainter magnitude (at fixed z), and similar trends for the Lya equivalent width. Our inferred Lya properties are in good agreement with the available spectroscopic observations and other data. These results demonstrate that the strength of Lya emission in distant star-forming galaxies can be inferred quantitatively from broad-band SED fits, at least statistically for sufficiently large samples with a good photometric coverage.
description: Accepted for publication in Astronomy & Astrophysics
Distribution of excitation-contraction coupling proteins as a function of development
Creators: name: Lin, Tsai Jing Eric
Publisher: name: University of British Columbia
Year: 2010

description: Excitation-contraction (EC) coupling in the neonatal rabbit heart has been previously shown to be mediated predominately by reverse-mode activity of the sodium-calcium exchanger (NCX). Thus the regulation of NCX is a primary determinant of neonatal cardiac contractility. It is proposed that in neonate hearts, a restricted domain allows a sodium current (INa) to mediate a large elevation in subsarcolemmal sodium concentration which then drives calcium entry through reverse-mode NCX. Functional data suggest that calcium influx through NCX can also trigger calcium induced calcium release (CICR). Traditionally, neonatal myocytes are thought to mediate EC coupling exclusively through trans-sarcolemma calcium influx. This model of EC coupling is distinct from the adult model of EC coupling in that it does not involve a significant CICR component. Traditionally, CICR processes are thought to be a hallmark of adult EC coupling processes where CICR is triggered exclusively by the L-type calcium current. Neonatal myocytes were previously believed to be too immature to sustain physiologically significant levels of CICR. Yet recent functional data suggest that not only are neonatal myocytes able to sustain CICR but that neonatal myocytes trigger CICR independently of the calcium current. Neonatal myocytes appear to trigger CICR exclusively though reverse-mode NCX activity (NCX-CICR). The phenomenon of NCX-CICR, prominent in early developmental stages and declining with further development, suggest that the neonatal myocardium contains specialized microdomains that allow NCX-CICR to occur. To investigate this unique EC coupling phenotype, three-dimensional confocal microscopy and advanced digital image analysis techniques are utilized to quantify the presence of these specialized microdomains and to determine the changes in these microdomains that occur with development.
The Algebraic Bethe Ansatz and Tensor Networks
Creators: name: Murg, Valentin
name: Korepin, Vladimir E.
name: Verstraete, Frank
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We describe the Algebraic Bethe Ansatz for the spin-1/2 XXX and XXZ Heisenberg chains with open and periodic boundary conditions in terms of tensor networks. These Bethe eigenstates have the structure of Matrix Product States with a conserved number of down-spins. The tensor network formulation suggestes possible extensions of the Algebraic Bethe Ansatz to two dimensions.
Weather Derivatives: Modelling, Pricing and Applications
Creators: name: Cui, Kaijie
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Economics--Finance
subject: Mathematics
subject: FOS: Mathematics
subject: Energy
subject: Weather derivatives
subject: Levy processes
subject: Mean-reverting process
subject: Dynamic hedging
subject: Continuous-time autoregressive model
subject: Regime-switching model

description: This thesis investigates the modelling of weather dynamics, pricing and applications of weather derivatives. Since the dominant weather effect in the current weather related financial market is temperature, our focus relies on temperature derivatives modelling, pricing and applications in Canadian temperature futures market. A brief overview on weather markets, weather indices and the literatures of modelling and pricing weather derivatives are introduced in Chapter 1. Then we first apply a standard Ornstein-Uhlenbeck process driven by general L\'{e}vy process for modelling the daily average temperature to Canadian cities data in Chapter 2. The model is characterized by mean-reverting property with time-dependent seasonal mean level and volatility and the driving noise in the model is extended to the general L\'{e}vy process. As an extension to the first model, continuous-time autoregressive (CAR) model driven by general L\'{e}vy process is considered and calibrated to Canadian data in Chapter 3. The discretization of the stochastic differential equation makes the calibration of these two models more convenient and applicable. These two models are also applied to derivation of explicit futures price of CAT index, and numerical prices of CDD and HDD futures. In Chapter 4, by analyzing some key properties of daily average temperature dynamics, we propose two two-state regime-switching models to capture the movement of temperature. Both these two regime-switching models have a ``normal" regime along with a ``jump" regime. The ``normal" regime is characterized by a standard Ornstein-Uhlenbeck process. For the ``jump" regimes, we use a Brownian motion with more extreme drift and volatility and a L\'{e}vy jump as the process which driving the abnormal positive or negative jumps in the temperature dynamics. Unlike the step by step calibration procedure for the first two models, we employ a modified Expectation-Maximization method to obtain the hidden Markov states and estimate parameters in these two regime-switching models. The CAT, CDD and HDD futures pricing approaches are also studied for both regime-switching models. For applications of the temperature futures, firstly, we give out a static, simple strategy example to hedge the volume risks in practical. Then, by building up a system of models for energy and temperature, we propose a dynamic hedging strategy for the hedging of the energy futures using temperature futures. Finally, in Chapter 6, we conclude and state the future works in this research topic.
Signature of the long range triplet proximity effect in the density of states
Creators: name: Knezevic, Milos
name: Trifunovic, Luka
name: Radovic, Zoran
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the impact of the long-range spin-triplet proximity effect on the density of states (DOS) in planar SF1F2S Josephson junctions that consist of conventional superconductors (S) connected by two metallic monodomain ferromagnets (F1 and F2) with transparent interfaces. We determine the electronic DOS in F layers and the Josephson current for arbitrary orientation of the magnetizations using the solutions of Eilenberger equations in the clean limit and for a moderate disorder in ferromagnets. We find that fully developed long-range proximity effect can occur in highly asymmetric ferromagnetic bilayer Josephson junctions with orthogonal magnetizations. The effect manifests itself as an enhancement in DOS, and as a dominant second harmonic in the Josephson current-phase relation. Distinctive variation of DOS in ferromagnets with the angle between magnetizations is experimentally observable by tunneling spectroscopy. This can provide an unambiguous signature of the long-range spin-triplet proximity effect.
description: 7 pages, 6 figures
Unconditional Class Group Tabulation to 2⁴⁰
Creators: name: Mosunov, Anton
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Mathematics
subject: FOS: Mathematics
subject: number theory
subject: class group
subject: quadratic form
subject: tabulation
subject: out-of-core multiplication

description: In this thesis, we aim to tabulate the class groups of binary quadratic forms for all fundamental discriminants D < 0 satisfying |D| < 2⁴⁰. Our computations are performed in several stages. We first multiply large polynomials in order to produce class numbers h(D) for D != 1 (mod 8). This stage is followed by the resolution of class groups Cl(D) with the Buchmann-Jacobson-Teske algorithm, which can be significantly accelerated when the class numbers are known. In order to determine Cl(D) for D = 1 (mod 8), we use this algorithm in conduction with Bach's conditional averaging method and the Eichler-Selberg trace formula, required for unconditional verification. Our novel class group tabulation method allowed us to gather unconditional numerical evidence in support of certain hypotheses, such as the Littlewood's bounds on L(1,x) and the Cohen-Lenstra heuristics.
THE EFFECT OF PUESTOW PROCEDURE ON CHRONIC PANCREATITIS
Creators: name: MOHAMMED HAMDY KHATTAB MSC, MD
name: SAMI MUFEED SAID MSC, MD
name: HANY MAURICE SABRY MSC, MD
name: AHMED MAGED ABDELHAMID AMMAR MSC, MD
name: HAITHAM HASSAN MOHY MSC, MD
name: AHMED NABIL AHMED ALI MSC, MD
Publisher: name: Zenodo
Year: 2023
Subjects: Chronic Pancreatitis- Puestow Procedure - Pancreatic Surgery - Pancreas – Steatorrhea.

description: Abstract
A Puestow procedure is an option for patients suffering from chronic pancreatitis with ductal dilation and severe intractable pain. Objectives: To evaluate the effect of the procedure on pain, endocrine and exocrine function through a period of one year in a high volume tertiary center. Methods: The study included fourteen patients undergoing Puestow procedure who were followed up for the improvement of pain, blood glucose level and steatorrhea over a period of one year. Results: A dramatic response in pain (intensity/ frequency/consequences) and fasting blood glucose level occurred after one year. While for the postprandial blood glucose level, it showed an improvement that reflects a remarkable control of blood glucose level. Regarding the steatorrhea, the improvement was not statistically significant. There was a rise in percentage of patients with no fat detected in stool; however, some patients with 'few' fat in stool showed an increased fecal fat at the end of the year. Conclusion: The dramatic relief of pain after the Puestow procedure is a life-changing step for patients suffering from a painful experience. The disability that this disease causes could be reversed through a procedure that is less invasive than other pancreatic surgeries, carrying less morbidity and mortality.
Interrupted Journeys: The Experiences of Refugee Women in Counselling
Creators: name: Djuraskovic, Ivana
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Mental Health
subject: Refugees
subject: Refugee resettlement
subject: Refugee counselling
subject: Refugee therapy

description: Although the mental health of refugees has been a focus of researchers for some time now, refugee transitions and refugee counselling are underrepresented and often neglected topics in the counselling literature in Canada. The practice of multicultural therapy with refugees continues to focus on a medical model and psychological issues that refugees face in pre-, trans-, and post –resettlement contexts. Within the current landscape of refugee counselling, very little research exists about refugees’ counselling needs as conceptualized from refugees’ perspective. This heuristic inquiry explored the stories of 6 refugees and their experiences of counselling in Canada. Based on the stories of the 6 co-researchers, 4 main categories emerged: (a) counselling process, (b) counsellor factors, (c) therapeutic relationship, and (d) client outcomes. Contributions to the academic and professional literature are highlighted. Implications and recommendations for future research and practice are identified and discussed. In response to the growing need to identify the effective counselling practices for refugees, this heuristic research focused on exploring the refugees’ lived experiences of counselling. This research also focused on capturing refugees’ voices about the factors that contribute to successful/unsuccessful counselling engagement and outcomes. It aimed to increase understanding of how refugees’ pre-, trans-, and post-migration experiences influence their resettlement and adaptation, and subsequent counselling needs. Keywords: refugees, refugee resettlement, refugee counselling, refugee therapy
Quantification of Entanglement from Magnetic Susceptibility for a Heisenberg Spin 1/2 system
Creators: name: Chakraborty, Tanmoy
name: Singh, Harkirat
name: Das, Diptaranjan
name: Sen, Tamal K.
name: Mandal, Swadhin K.
name: Mitra, Chiranjib
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Temperature and magnetic field dependent magnetization and extraction of entanglement from the experimental data is reported for dichloro(thiazole)copper(II), a Heisenberg spin chain system. The magnetic susceptibility vs. temperature plot exhibits signature of infinite spin chain. Isothermal magnetization measurements (as a function of magnetic field) were performed at various temperatures below the antiferromagnetic (AFM) ordering, where the AFM correlations persist significantly. These magnetization curves are fitted to the theoretically generated Bonner-Fisher model. Magnetic susceptibility can be used as a macroscopic witness of entanglement; using which entanglement is extracted from the experimentally measured magnetic data.