cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Comprehensive Study of Fluid Flow and Its Interactions within Porous Media in Steam-Assisted Gravity Drainage (SAGD) - Experimental and Simulation Studies
Creators: name: Kasraian, Ali
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: SAGD
subject: Emulsion
subject: In Situ Emulsification
subject: Flow Flow in Porous Media
subject: Heat Transfer in SAGD
subject: Engineering
subject: Engineering--Petroleum

description: Since the invention of steam assisted gravity drainage (SAGD), numerous efforts have been made to explore and enhance the process. This work studies three previously overlooked parameters and the noteworthy effect they have on reservoir pressure and saturation distributions: the shape of the steam chamber, the thermal expansion of the fluids, and the creation of a hydrocarbon bank. The results show that neglecting to consider these yields an inaccurate description of pressure and saturation distributions. Most notably, the pressure gradient is generally positive (dP/dx>0) from the chamber edge into the mobile region, contrary to an alleged monotonic pressure gradient horizontally (with dP/dx<0) from the chamber edge toward the cold part of the reservoir. Secondly, a hydrocarbon bank barrier limits the horizontal condensate flow from the chamber edge to the cold region, contrary to previous assertions of a horizontal flow path from the chamber edge into the cold region due to the initial water mobility in the reservoir. Consequently, neither the initial water mobility nor the difference between the injection pressure and the reservoir pressure result in a notable horizontal convective heat transfer from the chamber edge to the cold reservoir. A variety of SAGD studies have reported the production of water-in-oil emulsions. A key question is whether the emulsions are generated in situ. Exploring potential causes for in situ emulsification in SAGD has been limited to steam condensation. No rigorous investigation has been done on the possibility of in situ emulsification during commingling flow of the bitumen and condensed steam toward the production well. To this end, a detailed experimental study was performed, focusing on the role of four parameters: the viscosities of wetting and non-wetting phases, the wettability of porous media, the phase containing emulsifier, and the flow rate ratio. The in situ emulsification – for both non-wet in wet and wet in non-wet type of emulsions – only occurs if the capillary number of the non-wetting fluid is equal or larger than 0.000036. The capillary number analyses suggest that water-in-oil emulsions are unlikely to be generated in the mobile region in SAGD.
Resting state functional magnetic resonance imaging after pediatric mild TBI: Association of whole brain functional connectivity with diagnosis and post-concussive symptoms
Creators: name: Deighton, Stephanie
Publisher: name: Arts
Year: 2022
Subjects: subject: Mild traumatic brain injury
subject: Concussion
subject: Pediatrics
subject: Resting state fMRI
subject: Functional magnetic resonance imaging
subject: Psychology
subject: FOS: Psychology
subject: Psychology--Clinical

description: Accurate diagnosis and prognosis is important after pediatric mild traumatic brain injury (TBI), but limited objective measures exist for either purpose. Advanced neuroimaging has garnered increased interest as a means to better understand mild TBI, with the potential to support objective assessment. Broadly, the goal of this dissertation was to examine resting state functional magnetic resonance imaging (RS fMRI) after pediatric mild TBI. Study 1 is a scoping review that aimed to examine the literature on RS fMRI after pediatric and adolescent mild TBI to summarize findings, determine research themes, review methodological approaches, and identify areas for further research. Study 2 is an original research study that aimed to predict group status [i.e., mild TBI versus orthopedic injury (OI)] as well as post-concussive symptoms (PCS) from whole brain functional connectivity (FC) patterns in participants aged 8.00 to 16.99 years (N = 430). Study 1 identified 16 articles with four main research themes: 1) RS fMRI differences between mild TBI and comparison groups; 2) changes in RS fMRI over time; 3) RS fMRI differences in subsamples of mild TBI; and 4) relations of RS fMRI to outcome measures (e.g., symptoms, behaviour, and cognition). Overall, a clear pattern of findings of RS fMRI after mild TBI was difficult to discern, likely due to heterogeneity in study methods and a high proportion of cross-sectional studies with small sample sizes. Study 2 found that significant models of group (mild TBI versus OI) could be built from whole brain RS FC profiles. These FC profiles were characterized primarily by widespread differences in connectivity between networks, largely involving the default mode network, mesolimbic network, executive function/task positive networks, and the cerebellum. However, the observed prediction accuracy did not exceed the proportion of mild TBI cases in the sample. Additionally, no significant models of cognitive or somatic PCS could be built. While these findings provide insight into RS FC profiles that differentiate mild TBI from OI, the models have limited clinical utility, and PCS shortly after injury was not reflected in RS FC. While the results of this dissertation provide an important first step in understanding RS fMRI after pediatric mild TBI, more longitudinal research is needed.
Transformation Beyond the Settler Legal Paradigm: Grounding Ecologically-focused Legal Theories in Relational Accountability to Address Settler Colonialism and Support Indigenous Sovereignty
Creators: name: Gorrie, Melissa Catherine Helen
Publisher: name: Law
Year: 2022
Subjects: subject: Indigenous
subject: Decolonization
subject: Reconciliation
subject: Environmental Law
subject: Ecological legal theories
subject: Law
subject: FOS: Law
subject: Engineering--Environmental

description: In this thesis, I explore what is required to address settler colonialism and support Indigenous sovereignty in the environmental law context, and assess the extent to which ecologically-focused legal theories or ELTs align with what is required. I conclude that a rebalancing of power and authority is required towards nation-to-nation, legally pluralistic spaces that centre Indigenous sovereignty and the revitalization of Indigenous legal paradigms. In these spaces, settler-Indigenous legal paradigms co-exist as equals in mutually respectful and reciprocal relationships. To create such spaces requires several inter-related efforts on behalf of settlers, including: i) efforts to dismantle settler colonialism in settler legal paradigms and support the revitalization of Indigenous legal paradigms, ii) restitution and reparations for past and ongoing harms, and iii) efforts to engage and interact with Indigenous peoples and their legal paradigms in a manner that reflects the legally pluralistic vision set out herein. I conclude that ELTs mostly advocate for transformation within the settler legal paradigm, failing to challenge the state’s source of law-generating authority over Indigenous peoples and their lands. They also generally fail to centre and support Indigenous sovereignty and the revitalization of Indigenous legal paradigms. There is also virtually no mention of the need for restitution or reparations, or consideration of the need for relationship building and dialogue with Indigenous peoples and their legal paradigms. As a result, ELTs mostly maintain the settler colonial status quo. Nonetheless, there are some leading examples that demonstrate the possibility of ELTs being developed in a decolonized and pluralistic manner that addresses settler colonialism and supports the revitalization of Indigenous legal paradigms. These examples also demonstrate efforts towards creating respectful and reciprocal relationships and dialogue where settler and Indigenous scholars and their legal paradigms co-exist as equals. Moving forward, ELTs should be grounded in problematizing and challenging settler colonialism and supporting Indigenous sovereignty and legal revitalization. Settler ELT scholars should also engage in concerted efforts to build relationships of mutual respect and reciprocity with Indigenous colleagues, where their needs are centred. Such relationship building can enable meaningful cross-legal dialogue and the co-creation of collaborative, decolonized and pluralistic spaces.
Ascending Aortic Aortopathy: Insights into Microstructure-mechanical interactions and non-invasive biomarkers
Creators: name: Nightingale, Miriam
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: Aortic Aneurysm
subject: Tissue biomechanics
subject: histopathology
subject: Ascending Aorta
subject: Bicuspid Aortic Valve
subject: Engineering
subject: Engineering--Biomedical

description: Ascending aortic aneurysms are a result of microstructural changes leading to altered biomechanical behaviour. Current risk assessment tools only indirectly relate to the aortic wall weakening and fail to capture a significant portion of dissections. Thus, there is a need for finding alternative patient-specific non-invasive markers that correlate with local variations in ex vivo histopathological and mechanical properties. Aortic tissue samples were obtained from both bicuspid (BAV) and tricuspid aortic valves individuals undergoing elective aortic resection. Samples were subjected to biaxial and uniaxial testing to quantify mechanical properties and histopathological analysis to obtain the microstructural properties. Several biaxial biomechanics properties correlated with the microstructural properties and strength and show promise in their potential to be obtained through medical imaging. To further integrate the role of glycosaminoglycans (GAG) in aortopathy, a comparison between GAG accumulation and overall content and their corresponding effects on the biomechanics and elastin properties was conducted. It was seen that a combination of severe accumulation with decreased overall content was associated with signs of elastin degradation and altered biomechanics. The confounding effects of aging were also explored by comparing the elastin-biaxial biomechanics relationship between BAV patients in their 6th and 7th decades. The relationship between elastin degradation and the biomechanics, was seen to differ based on patient age. These results illustrate the variability within the BAV population as well as the need to further establish the effects of aging. Finally for a section of the BAV population, patients were subjected to pre-operative MRI to identify areas of localised elevated wall shear stress (WSS) based on age-matched healthy atlases. Categorical WSS and region of tissue collected were compared with biaxial mechanical properties. The results show that WSS was a better indicator than region for altered biomechanics in BAV tissue with respect to tissue collection region, reinforcing the potential of WSS as a non-invasive marker of aortopathy. This thesis provided insight into the complexity of ascending aortic aneurysmal disease including confounding effects of aging; it also established a potential future direction for non-invasive markers that could improve risk assessment and surgical planning.
Crypto-unitary forms of quantum evolution operators
Creators: name: Znojil, Miloslav
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: For the description of quantum evolution, the use of a manifestly time-dependent quantum Hamiltonian $\mathfrak{h}(t) =\mathfrak{h}^\dagger(t)$ is shown equivalent to the work with its simplified, time-independent alternative $G\neq G^\dagger$. A tradeoff analysis is performed recommending the latter option. The physical unitarity requirement is shown fulfilled in a suitable ad hoc representation of Hilbert space.
description: 15 pp
Spherical linear waves in de Sitter spacetime
Creators: name: Costa, Joao L.
name: Alho, Artur
name: Natario, Jose
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35L05

description: We apply Christodoulou's framework, developed to study the Einstein-scalar field equations in spherical symmetry, to the linear wave equation in de Sitter spacetime, as a first step towards the Einstein-scalar field equations with positive cosmological constant. We obtain an integro-differential evolution equation which we solve by taking initial data on a null cone. As a corollary we obtain elementary derivations of expected properties of linear waves in de Sitter spacetime: boundedness in terms of (characteristic) initial data, and a Price law establishing uniform exponential decay, in Bondi time, to a constant.
description: 9 pages, 1 figure; v2: minor changes, references added, matches final published version
Assessing Alternative Optimum Bus Operations Strategies Considering Route Demand, Pattern, and Crowding
Creators: name: Heidarigharehsoo, Negar
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: Transit operations
subject: Skip-stop service
subject: Express-local service
subject: On-demand service
subject: Optimization
subject: COVID-19
subject: Sociology--Transportation
subject: Engineering--Civil

description: This thesis developed four mathematical models using continuum approximation and applied them to an urban bus route. Alternative operating strategies are compared to conventional all-stop operations. The comparison of skip-stop and express-local schemes with stop skipping designs and on-demand strategies with flexible stopping patterns are conducted to determine the most efficient bus operating service under various conditions. Each alternative has a total cost that includes walking time, waiting time, in-vehicle travel time, and transferring between lines, in addition to operating costs. This thesis also considers the impact of the COVID-19 pandemic on public transit. As a result, we incorporated the crowding disutility based on the loading factor and the denied boarding costs into the optimization models. First, we solved the theoretical case and determined the most efficient bus operating strategy for various ranges of passenger demand and average trip length. Next, we solved the continuous optimization models by optimizing bus headway and stop spacing. Additionally, this thesis conducted sensitivity analyses of various conditions, including determining the most efficient strategy under fleet size constraints as well as the sensitivity of passengers to crowding and travel times using numerical examples. The solution proposed in this thesis is responsive to changes in demand, trip patterns, and passenger sensitivity to cost components. The model is applied to a bus route in Calgary, Canada, and provides an optimal bus dispatching scheme for two scenarios, with and without considering crowding discomfort. Results show that on-demand services have the lowest generalized costs in scenarios with low demand. In the case of higher demand and longer trips, conventional all-stop systems are preferred. Under high demand and longer passenger trips, skip-stop and express-local services can lower overall system costs. Considering crowding measures, the lowest cost alternative option shifts from conventional services to strategies with stop-skipping designs, such as skip-stop and express-local policies. Express-local strategy dominates other services when the fleet size is limited, and crowding is considered.
Decay Widths of X(1835) as Nucleon-Antinucleon Bound State
Creators: name: Samart, D.
name: Yan, Y.
name: Gutsche, Th.
name: Faessler, Amand
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Partial decay widths of various decay channels of the X(1835) are evaluated in the 3P0 quark model, assuming that the X(1835) is a nucleon-antinucleon bound state. It is found that the decays to rho+rho, omega+omega and pion+a0(1450) dominate over other channels, and that the product branching fractions of J/psi to pion+pion+eta and J/psi to pion+pion+eta' are in the same order. We suggest that the X(1835) may be searched in the pion+a0(1450) channel.
description: Changed X(1850) to X(1835) in Abstract
Characterization of heterogeneous fluid-fluid interfaces via microrheology
Creators: name: Roy, Teetas
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: microrheology
subject: DPPC
subject: P. aeruginosa
subject: interfaces
subject: interfacial rheology
subject: Engineering
subject: Engineering--Chemical

description: Two-point microrheology was applied to a homogeneous (DPPC monolayers) and a heterogeneous (biofilms) interface of physiological relevance. For DPPC monolayers, both the longitudinal and transverse correlated motions showed a purely diffusional regime at different surface pressures. A good agreement between the single particle and two particle mean square displacements was observed. For biofilms of Pseudomonas aeruginosa at air-water interface, a transition from viscous to elastic regime was observed as the interface aged. The thermal cross-correlations of particles showed a strong scattering over the particle distances confirming the heterogeneity of the biofilms at air-water interface. This heterogeneity was also reflected in the mean square displacements where discrepancies are observed between results from one particle and two particle microrheology. Choosing one single particle as reference, a map of the spatial heterogeneity of biofilms was developed. The novel methodology provide insights into local micromechanics of complex interfaces that is not accessible with classical interfacial rheometry.
Upper Bounds on the Rate of Low Density Stabilizer Codes for the Quantum Erasure Channel
Creators: name: Delfosse, Nicolas
name: Zémor, Gilles
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 94B99

description: Using combinatorial arguments, we determine an upper bound on achievable rates of stabilizer codes used over the quantum erasure channel. This allows us to recover the no-cloning bound on the capacity of the quantum erasure channel, R is below 1-2p, for stabilizer codes: we also derive an improved upper bound of the form : R is below 1-2p-D(p) with a function D(p) that stays positive for 0 < p < 1/2 and for any family of stabilizer codes whose generators have weights bounded from above by a constant - low density stabilizer codes. We obtain an application to percolation theory for a family of self-dual tilings of the hyperbolic plane. We associate a family of low density stabilizer codes with appropriate finite quotients of these tilings. We then relate the probability of percolation to the probability of a decoding error for these codes on the quantum erasure channel. The application of our upper bound on achievable rates of low density stabilizer codes gives rise to an upper bound on the critical probability for these tilings.
description: 32 pages
Reaching girls through social networking : is there a new avenue for smoking prevention messages?
Creators: name: Struik, Laura Louise
Publisher: name: University of British Columbia
Year: 2012

description: Evidence reveals that adolescent girls are being targeted on the internet by pro-tobacco advocates in order to influence smoking uptake, especially on social networking websites. Despite efforts to prevent smoking, rates of smoking initiation among young women continue to raise concerns. The aim of this interpretive descriptive study was to explore adolescent girls' perspectives about utilizing social networking websites as a medium to deliver tobacco control (TC) messages directed towards young women. Data were collected using three semi-structured focus groups with 17 smoking and non-smoking adolescent girls who were recruited through a recruitment poster and an ad on Facebook. Participants ranged in age from 16 to 19 years old, with a mean age of 17.7 years old (SD=0.69). The participants were provided seven current TC messages directed towards girls for evaluation, and to provide a context for discussion regarding the placement of TC messages on social networking websites. The data were analyzed using constant comparative methods. The findings suggest that young women are receptive to TC messages on social networking sites if messages are interactive, provide access to further information, and are positively framed in relation to becoming or staying smokefree. However, the participants expressed concern about the perceived stereotypical representations of gender and femininity displayed in TC messages and warned that these aspects render TC messages as less effective. Although there were mixed responses to the use of fear appeal messages, participants agreed that TC messages should include aspects that adolescent girls can relate to, such as ensuring the foci of messages are age-specific, include reference to peers and/or family, match the emotional tone in messages to the health and social risks associated with smoking, and refer to activities that are popular among adolescent girls. The findings of this study provide a beginning foundation for the development and evaluation of TC messages directed towards young women on social networking sites and has important implications for policy, practice and future research.
Additional file 2 of The whole profiling and competing endogenous RNA network analyses of noncoding RNAs in adipose-derived stem cells from diabetic, old, and young patients
Creators: name: Ren, Sen
name: Xiong, Hewei
name: Chen, Jing
name: Yang, Xiaofan
name: Liu, Yutian
name: Guo, Jiahe
name: Jiang, Tao
name: Xu, Zhao
name: Yuan, Meng
name: Liu, Yang
name: Zhou, Nan
name: Chen, Hongrui
name: Li, Wenqing
name: Machens, Hans-Günther
name: Chen, Zhenbing
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Figure S1. This figure illustrated the negative results of Fig. 7. The selected mRNAs, lncRNAs and circRNAs without significant difference by PCR analyses were shown in (A, B). (C, D) The correlation analysis found the expression level of miR-145-5p was not significantly correlated with the expression levels of LOC102723591 and hsa_circ_0092630.
ESSAYS IN LABOR AND DEVELOPMENT
Creators: name: Martin, Diego A
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Labour economics
Experimental economics

description: I worked on two chapters studying the labor markets in Colombia and Iraq. My third chapter analyzed health outcomes in the US.
 My first chapter examines whether the three-year gap between the announcement (in 2014) and the start (in 2017) of the Illicit Crop Substitution Program (ICSP) increased child labor in Colombia. My results from a difference-in-differences model using differences in historical coca production show that due to the ICSP announcement, children became four percentage points more likely to work in municipalities with historical coca production than in non–coca-growing areas.
 My second chapter ran a randomized control trial and a double-incentivized resume rating to elicit the preferences of employers and job seekers for candidates and vacancies in Iraq. After revealing the ob offer rate for female job seekers, women applied for jobs by three more percentage points than the men in the control group. This paper highlights the value of revealing employers’ preferences to improve the match between female candidates and employers when women underestimate the chances of finding a job.
 In my third paper, I study how removing the black box warning on Chantix, a prescription drug used to reduce nicotine consumption, affects veterans’ visits to smoking cessation therapy. Using a difference-in-differences model, I found that veterans schedule almost two more medical consultations in counties with high-quality hospitals than in places with low-quality medical care centers.
A first-principles study of helium storage in oxides and at oxide--iron interfaces
Creators: name: Erhart, Paul
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Density-functional theory calculations based on conventional as well as hybrid exchange-correlation functionals have been carried out to study the properties of helium in various oxides (Al2O3, TiO2, Y2O3, YAP, YAG, YAM, MgO, CaO, BaO, SrO) as well as at oxide-iron interfaces. Helium interstitials in bulk oxides are shown to be energetically more favorable than substitutional helium, yet helium binds to existing vacancies. The solubility of He in oxides is systematically higher than in iron and scales with the free volume at the interstitial site nearly independently of the chemical composition of the oxide. In most oxides He migration is significantly slower and He--He binding is much weaker than in iron. To quantify the solubility of helium at oxide-iron interfaces two prototypical systems are considered (Fe|MgO, Fe|FeO|MgO). In both cases the He solubility is markedly enhanced in the interface compared to either of the bulk phases. The results of the calculations allow to construct a schematic energy landscape for He interstitials in iron. The implications of these results are discussed in the context of helium sequestration in oxide dispersion strengthened steels, including the effects of interfaces and lattice strain.
description: 13 pages, 10 figures, 4 tables
Full counting statistics for orbital-degenerate impurity Anderson model with Hund's rule exchange coupling
Creators: name: Sakano, Rui
name: Nishikawa, Yunori
name: Oguri, Akira
name: Hewson, Alex C.
name: Tarucha, Seigo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study non-equilibrium current fluctuations through a quantum dot, which includes a ferromagnetic Hund's rule coupling $J$, in the low-energy Fermi liquid regime using the renormalized perturbation theory. The resulting cumulant for the current distribution in the particle-hole symmetric case, shows that spin-triplet and spin-singlet pairs of quasiparticles are formed in the current due to the Hund's rule coupling and these pairs enhance the current fluctuations. In the fully screened higher-spin Kondo limit, the Fano factor takes a value $F_b = (9M+6)/ (5M+4)$ determined by the orbital degeneracy $M$. We also investigate crossover between the small and large $J$ limits in the two-orbital case M=2, using the numerical renormalization group approach.
description: 5 pages, 3 figures
Process as Metaphor: Locating Meaning in Contemporary Material Film Practices
Creators: name: Whitehead, Kyle
Publisher: name: Arts
Year: 2022
Subjects: subject: Art History
subject: Cinema
subject: Fine Arts

description: This supporting document explores ongoing trajectories in my research creation practice that are rooted in chance aesthetics and the ontologies of experimental filmmaking practices from the 1970s to today. Specifically, this research considers the recent material turn in artists’ experimental film practices, positioning this strong resurgence of interest in analogue materials and methods as an evolution of Structural / Materialist film theory and paracinema that responds to contemporary media ecology. Through a discussion of recent works in film, installation and projection performance – my own and those of my contemporaries – this paper situates my material filmmaking practice in the context of this art historical trajectory, and outlines the shifting values and the political and ethical stakes of making artworks on celluloid film today.
Numerical Investigation of Diapycnal Mixing in the Kitikmeot Sea, Canadian Arctic Archipelago
Creators: name: Afsharipour, Yasaman
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: Diapycnal mixing
subject: Numerical simulation
subject: Ocean models
subject: Mixing energetics
subject: Education--Sciences
subject: Oceanography
subject: FOS: Earth and related environmental sciences
subject: Engineering

description: The Kitikmeot Sea, located in the southern Canadian Arctic Archipelago, has particular features distinguishing it from the northern parts of the Archipelago. Substantial ice-free period, massive freshwater input from rivers, limited water exchange due to its surrounding narrow straits and shallow sills, can influence the local ocean dynamics, in particular, the mixing and transport in this sea. In this thesis, diapycnal mixing is investigated by analyzing the output data from a numerical simulation of the Kitikmeot Sea, with 1/12◦ horizontal resolution, during years 2003 to 2019. Mixing strength has been quantified in terms of diapycnal diffusivity values derived from a volume-averaged advection-diffusion equation for fluid density. Spatial and temporal variability of mixing in the Kitikmeot Sea is investigated. Furthermore, the contributions from a number of energy sources to the mixing process have been estimated in order to identify the main driving mechanism for mixing. Investigation of the temporal variability in diffusivity reveals seasonal patterns which can be attributed to the annual cycle of sea-ice coverage. It was found that wind stirring and convection due to sea-ice forming and sea-surface cooling make significant energy contributions to mixing in the Kitikmeot Sea.
The CRESST II Dark Matter Search
Creators: name: Stodolsky, Leo
name: Angloher, G.
name: Bauer, M.
name: Bavykina, I.
name: Bento, A.
name: Bucci, C.
name: Ciemniak, C.
name: Deuter, G.
name: Feilitzsch, F. v.
name: Hauff, D.
name: Huff, P.
name: Isaila, C.
name: Jochum, J.
name: Kiefer, M.
name: Kimmerle, M.
name: Lanfranchi, J. C.
name: Pfister, S.
name: Petricca, F.
name: Potzel, W.
name: Proebst, F.
name: Reindl, F.
name: Roth, S.
name: Rottler, K.
name: Sailer, C.
name: Schaeffner, K.
name: Schmaler, J.
name: Scholl, S.
name: Seidel, W.
name: Sivers, M. v.
name: Strandhagen, C.
name: Strauss, R.
name: Tanzke, A.
name: Usherov, I.
name: Wawoczny, S.
name: Willers, M.
name: Zoeller, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Direct Dark Matter detection with cryodetectors is briefly discussed, with particular mention of the possibility of the identification of the recoil nucleus. Preliminary results from the CREEST II Dark Matter search, with 730 kg-days of data, are presented. Major backgrounds and methods of identifying and dealing with them are indicated.
description: Talk at DSU workshop, ITP Beijing, Oct. 2011. 9 figures, 2 tables
Optimal Reinsurance with Vajda Condition and Range-Value-at-Risk
Creators: name: Wang, Ye
Publisher: name: Science
Year: 2022
Subjects: subject: optimal reinsurance
subject: Vajda condition
subject: Range-Value-at-Risk
subject: RVaR
subject: Education--Finance
subject: Mathematics
subject: FOS: Mathematics

description: In this project we study an optimal reinsurance problem where the insurer’s risk-adjusted liability gets minimized. To better reflect the spirit of reinsurance, we impose exogenous Vajda condition on indemnity functions which requires the reinsurer to pay an increasing proportion of loss. To consider both robustness and tail risk, the insurer is assumed to apply Range-Value-at-Risk (RVaR) to evaluate its risk. Under the expected value premium principle, we derive the closed-form solution to our problem, which includes the results in Chi and Weng (2013) as special cases. Some comparative studies and sensitivity analysis are also carried out through numerical examples. Results from a simulation study indicate that the policy with Vajda condition is superior to that without Vajda condition if the insurer is very aversive to the tail risk.
Gravitational Lensing as a Mechanism For Effective Cloaking
Creators: name: Tippett, Benjamin K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Optics (physics.optics)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: In light of the surge in popularity of electromagnetic cloaking devices, we consider whether it is possible to use gravitational lensing to cloak a volume of spacetime. A metric for such a spacetime geometry is presented, and its geometric and physical implications are explained.
description: 5 pages, 6 figures
Phase Transitions and Gauge Artifacts in an Abelian Higgs Plus Singlet Model
Creators: name: Wainwright, Carroll L.
name: Profumo, Stefano
name: Ramsey-Musolf, Michael J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: While the finite-temperature effective potential in a gauge theory is a gauge-dependent quantity, in several instances a first-order phase transition can be triggered by gauge-independent terms. A particularly interesting case occurs when the potential barrier separating the broken and symmetric vacua of a spontaneously broken symmetry is produced by tree-level terms in the potential. Here, we study this scenario in a simple Abelian Higgs model, for which the gauge-invariant potential is known, augmented with a singlet real scalar. We analyze the possible symmetry breaking patterns in the model, and illustrate in which cases gauge artifacts are expected to manifest themselves most severely. We then show that gauge artifacts can be pronounced even in the presence of a relatively large, tree-level singlet-Higgs cubic interaction. When the transition is strongly first order, these artifacts, while present, are more subtle than in the generic situation.
description: 19 pages, 4 figures. Added comparisons with a gauge-independent formalism (which necessitated removing the counterterms from the original model), and fixed a computational error in the effective potential. Figures 2, 3, and 4 are changed, along with much of section 3. The qualitative results remain the same
Exploring the Green Sukuk as a New Finance Instrument for the Energy Transition in Canada
Creators: name: Kadiri, Monsuratu
Publisher: name: Law
Year: 2022
Subjects: subject: Green Sukuk
subject: Islamic Finance
subject: Energy Transition
subject: Green Bonds
subject: Sustainable Finance
subject: Education--Finance
subject: Law
subject: FOS: Law
subject: Energy

description: The Canadian commitment to carbon neutrality requires a corresponding financial investment. Studies have shown that the conventional green bonds are unable to achieve Canada-wide carbon neutrality, hence the burning need to consider the expansion of the green finance market to incorporate alternative finance mechanisms such as; green Sukuk. This thesis will show that green Sukuk is capable of tapping into markets beyond the reach of conventional green bonds. The research uses a doctrinal and comparative approach, by analyzing the green Sukuk frameworks and market development in Malaysia and Indonesia to propose a roadmap for the utilization of green Sukuk in Canada. The thesis examines the green Sukuk as a financing option for the energy transition in Canada. It provides a description of green Sukuk, discusses the underlying ethical principles and environmental responsibility embedded within the shari’ah law, and thereafter makes a distinction between the green Sukuk and the conventional green bonds. In addition to this, the study examines the impact of green Sukuk in Malaysia and discusses its potential impact on Canada’s green finance market and in achieving its climate objectives. The study recommends amendments to the capital market regulation, the creation of a green Sukuk framework, standardization of the green Sukuk market and incentives that appeal to issuers and investors. It makes further recommendations on the role of the government and relevant stakeholders in creating conducive market conditions for green Sukuk to strive. These recommendations are pivotal for regulators, issuers, and investors by ensuring that the green Sukuk remains a veritable financial instrument that aids to expand the Canadian green finance market and achieve the country’s climate goals.
Third Space: An interactive exploration of mixed realities
Creators: name: Shahab, Parnia
Publisher: name: Arts
Year: 2022
Subjects: subject: Augmented reality App, Displacement, Bodily experiences, Mixed Environments, Uncanny Bodies, Third Space
subject: Dance
subject: Fine Arts
subject: Education--Art
subject: Anthropology--Cultural

description: Living in my hometown Tehran, Iran, and moving to an entirely new city, Calgary, Canada, helped me realize the relationship between my body, cultural/physical space, and place (context) more vividly. Experiencing physical/cultural dislocation, living in in-between spaces (real/virtual), and moving through the process of reformation of identity in the new environment has led me to conduct this research-creation. In this research, I investigate how bodies perceive physical/social spaces, how the context (place) shapes this perception, and how Augmented reality-as a digital interactive technology- helps study, embody, and share the experience of displacement through an interactive play between the artist and users. Adopting newer interdisciplinary approaches for the structure of art practices brings former perspectives to a more contemporary level. I use research-creation as the main methodology and augmented reality as the primary method to analyze the factors of the context and the embodied experiences. In the following chapters, I discuss theoretical frameworks that define the relationship between body, space, and place in displacement. Further, I study the mixed environments and new supporting technologies such as Augmented Reality as a suitable platform for this research and present my own artwork, “Floating Bodies A.R. App” as an example to answer my central research question: How can the use of augmented reality help us attend to the embodied experience of displacement?
Entwicklung einer Röntgenzoomlinse
Creators: name: Kornemann, Elisa
Publisher: name: KIT Scientific Publishing
Year: 2019
Subjects: Röntgenoptik
Röntgenlinse
Zoomlinse
Transfokator
Röntgenmikroskopie
X-ray optic
X-ray lens
zoom lens
transfocator
X-ray microscopy

description: Abbildende Verfahren wie die Röntgenmikroskopie werden in der zerstörungsfreien Werkstoffanalyse eingesetzt, um Auflösungen im Submikrometerbereich zu erreichen. Dort werden abbildende Optiken benötigt, wofür Röntgenlinsen für Photonenenergien oberhalb von 10 keV besonders gut geeignet sind. Damit solche Linsen universell mit konstanten optischen Eigenschaften über einen breiten Photonenenergiebereich einsetzbar sind, wurde in dieser Arbeit erstmalig eine Röntgenzoomlinse entwickelt.
Critical partitions and nodal deficiency of billiard eigenfunctions
Creators: name: Berkolaiko, Gregory
name: Kuchment, Peter
name: Smilansky, Uzy
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35Pxx, 58C40, 58J50, 81Q10

description: The paper addresses the the number of nodal domains for eigenfunctions of Schrödinger operators with Dirichlet boundary conditions in bounded domains. In dimension one, the $n$th eigenfunction has $n$ nodal domains. The Courant Theorem claims that in any dimension, the number of nodal domains of the $n$th eigenfunction cannot exceed $n$. However, in dimensions higher than 1 the equality can hold for only finitely many eigenfunctions. Thus, a "nodal deficiency" arises. Examples are known of eigenfunctions with arbitrarily large index $n$ that have just two nodal domains. It was suggested in the recent years to look at the partitions of the domain, rather than eigenfunctions. It was shown in a recent paper by Helffer, Hoffmann-Ostenhof and Terracini that (under some natural conditions) bipartite partitions minimizing the maximum of the ground-state energies in sub-domains of the partition, correspond to the "Courant sharp" eigenfunctions, i.e. to those with zero nodal deficiency. In this paper, the authors show, under some genericity conditions, among the bipartite equipartitions, the nodal ones correspond exactly to the critical points of an analogous functional, with the nodal deficiency being equal to the Morse index at this point. This explains, in particular, why all the minimal partitions must be Courant sharp.
description: In the 2nd version minor modifications were implemented
An Intervention to Enhance Mental and Physical Health of Nursing Students
Creators: name: Ciezar Andersen, Sylwia
Publisher: name: Nursing
Year: 2022
Subjects: subject: nursing students
subject: physical health
subject: mental health
subject: yoga
subject: Mental Health
subject: Nursing
subject: FOS: Health sciences

description: Nursing students exhibit some of the highest symptoms of depression, anxiety, and stress relative to students in other health-related disciplines and to their counterparts outside of university. Up to 50% of nursing students are sedentary, compromising their physical health and exacerbating risk for musculoskeletal injury. Yoga has been associated with improved mental and physical health in a variety of populations. With the ORBIT Model as a guide to implementation, the first manuscript in this thesis consists of a systematic review exploring existing evidence of the effectiveness of yoga interventions for healthcare professionals and students (design phase, Phase I). This evidence was then used to plan and optimize protocol details for Phases IIa and IIb. The process of undertaking a web-based yoga intervention was explored in a proof-of-concept study (Phase II a). After protocol refinement, a pilot study was conducted (Phase II b), and is described in the second manuscript. All 68 participants who completed the pilot study exhibited a significant decrease in symptoms of depression, anxiety, stress, and improved self-compassion and core endurance scores. While significant mental and physical health benefits following yoga intervention were demonstrated in this sample, 44% attrition rates were encountered during the course of the pilot study. Thus, retention challenges were explored and recommendations for further refinement and protocol optimization were the focus of the third manuscript.
The Plant Defensin Ppdef1 Is a Novel Topical Treatment for Onychomycosis
Creators: name: Van Der Weerden, Nicole
name: Parisi, Kathy
name: McKenna, James
name: Hayes, Brigitte
name: Harvey, Peta J
name: Quimbar Dominguez, Pedro
name: Wevrett, Sean R
name: Veneer, Prem
name: McCorkelle, Owen
name: Vasa, Shaily
name: Guarino, Rosemary
name: Poon, Simon
name: Gaspar, Yolanda
name: Baker, Michael J
name: Craik, David J
name: Turner, Rob B
name: Brown, Marc B
name: Bleackley, Mark
name: Anderson, Marilyn
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 3107
subject: Microbiology
subject: FOS: Biological sciences

description: Onychomycosis, or fungal nail infection, causes not only pain and discomfort but can also have psychological and social consequences for the patient. Treatment of onychomycosis is complicated by the location of the infection under the nail plate, meaning that antifungal molecules must either penetrate the nail or be applied systemically. Currently, available treatments are limited by their poor nail penetration for topical products or their potential toxicity for systemic products. Plant defensins with potent antifungal activity have the potential to be safe and effective treatments for fungal infections in humans. The cystine-stabilized structure of plant defensins makes them stable to the extremes of pH and temperature as well as digestion by proteases. Here, we describe a novel plant defensin, Ppdef1, as a peptide for the treatment of fungal nail infections. Ppdef1 has potent, fungicidal activity against a range of human fungal pathogens, including Candida spp., Cryptococcus spp., dermatophytes, and non-dermatophytic moulds. In particular, Ppdef1 has excellent activity against dermatophytes that infect skin and nails, including the major etiological agent of onychomycosis Trichophyton rubrum. Ppdef1 also penetrates human nails rapidly and efficiently, making it an excellent candidate for a novel topical treatment of onychomycosis.
Problems of VOIP and Spam over Internet Telephony
Creators: name: วรพล ลีลาเกียรติสกุล
Publisher: name: Faculty of Information Science and Technology, Mahanakorn University of Technology
Year: 2011
Subjects: SIP
VoIP
SPIT
Anti-SPIT

description: Journal of Information Science and Technology, 2, 1, 21-30
Exact wave functions of two-electron quantum rings
Creators: name: Loos, Pierre-François
name: Gill, Peter M. W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We demonstrate that the Schrödinger equation for two electrons on a ring, which is the usual paradigm to model quantum rings, is solvable in closed form for particular values of the radius. We show that both polynomial and irrational solutions can be found for any value of the angular momentum and that the singlet and triplet manifolds, which are degenerate, have distinct geometric phases. We also study the nodal structure associated with these two-electron states.
description: 4 pages, 2 figures, 2 tables, to appear in Phys. Rev. Lett
Renormalization Group Study of Magnetic Catalysis in the 3d Gross-Neveu Model
Creators: name: Scherer, Daniel D.
name: Gies, Holger
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Magnetic catalysis describes the enhancement of symmetry breaking quantum fluctuations in chirally symmetric quantum field theories by the coupling of fermionic degrees of freedom to a magnetic background configuration. We use the functional renormalization group to investigate this phenomenon for interacting Dirac fermions propagating in (2+1)-dimensional spacetime, described by the Gross-Neveu model. We identify pointlike operators up to quartic fermionic terms that can be generated in the renormalization group flow by the presence of an external magnetic field. We employ the beta function for the fermionic coupling to quantitatively analyze the field dependence of the induced spectral gap. Within our pointlike truncation, the renormalization group flow provides a simple picture for magnetic catalysis.
description: 14 pages, 6 figures, typos corrected