cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum loops in the 1T transition metal dichalcogenides
Creators: name: Knowles, Ashland
name: Baskaran, G.
name: Ganesh, R.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Loop arrangements and their quantum superpositions describe several interesting many-particle states. We propose that they also describe bonding in a class of transition metal dichalcogenides. We present an effective quantum loop model for monolayers with 1T structure and a d$^2$ valence electron configuration: materials of the form MX$_2$ (M = Mo, W and X=S, Se, Te) and AM$'$Y$_2$ (A = Li, Na; M$'$ = V, Nb and Y = O, S, Se). Their t$_{2g}$ orbitals exhibit strongly directional overlaps between neighbouring atoms, favouring the formation of valence bonds. A transition metal atom forms two valence bonds, each with one of its neighbours. When connected, these bonds form loops that cover the triangular lattice. We construct a minimal Rokhsar-Kivelson-like model with resonance processes that cut and reconnect loops that run in proximity. The resulting dynamics is more constrained than in traditional quantum dimer models, with a `bending' constraint that arises from orbital structure. In the resulting phase diagram, we find phases that resemble distorted phases seen in materials, viz., the 1T$'$ and trimerized phases. As a testable prediction, we propose that a single d$^1$ or d$^3$ impurity will terminate a loop and give rise to a long-ranged texture. For example, a Ti/Cr defect in LiVO$_2$ will produce one or more domain walls that propagate outward from the impurity. We discuss the possibility of a loop liquid phase that can emerge in these materials.
description: 6 pages, 4 figures, includes 3-page supplement
Dynamically-driven galaxy evolution in clusters of galaxies
Creators: name: Jensen, Peter Christian
Publisher: name: Swinburne
Year: 2024

description: Galaxy evolution is a very active field of current astrophysical research. Despite this,the question of how cluster mergers modulate the evolution of galaxies is unresolved. Given the ubiquity of cluster mergers and that some 5{10% of galaxies in the local Universe reside in clusters of galaxies, answering this question is of vital importance for gaining a complete understanding of the processes responsible for galaxy evolution. The aim of this thesis is to study galaxy evolution in a cluster merger and to link galaxy evolution to the merger. We collected optical spectra of galaxies in Abell 3667, a cluster merger system ~ 1 Gyr post-core passage, and in a sample of relaxed benchmark clusters with the 3.9m Anglo-Australian Telescope and 6.5m MMT Telescope down to M* +3. Single stellar population templates were fitted to the spectra to measure velocity dispersions and to broadly classify galaxies as absorption line or emission line systems. Lick indices were measured and were used to derive the age, [/Fe], [Fe/H] and [Z/H] stellar population parameters and the Balmer indices were used to classify post-starburst galaxies. Equivalent widths were measured for the H, H, [OIII] and [NII] emission lines. Emission line ratios were used to classify emission line galaxies into star-forming and AGN classes and star formation rates were estimated from H and D4000.
Connectedness Properties of Self-Similar Graphs
Creators: name: Volkov, Oleksii
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2016
Subjects: subject: Analysis
subject: Mathematics
subject: FOS: Mathematics

description: This thesis is broadly concerned with two problems: obtaining the mathematical model of the specific infinite self-similar graph, and investigating the connectedness of the tree-like graph in order to show its relation to the associated hyperbolic space. Our main result concerning the former problem is that, in a variety of situations, the self-similar infinite structure obtained by using our method as the graph product of a disconnected finite graph and regular rooted tree can be connected (i.e. have the hyperbolic metric space associated to it). This addresses a question about the existence of the optimal depth for the breadth-first search algorithm and also has possible applications to the recent research topics in Psychological and Brain Sciences. We approach the connectedness problem by showing the similarity of obtained geometric structures to well known algebraic structures such as groupoid and pseudogroup. One of our main results is that, under the assumption that the emerged geometric self-similar structure is connected, it is naturally associated to the hyperbolic metric space. Thus, the variety of well known methods can be applied in further study. We also show that the connectedness of our structure can be reached in the finite number of steps or can not be reached at all. This gives the grounds for the optimal application of the breadth-first search algorithm.
Investigating a Coach's Facilitation of Learning Situations Among Masters and Youth Athletes
Creators: name: MacLellan, Justin
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2016
Subjects: andragogy
coaching
learning
Masters athletes
pedagogy
sport
teaching
youth

description: This thesis aimed to uncover age-related differences in a coach’s approaches to facilitate learning for Masters athletes (MAs) and youth athletes, using the Andragogy in Practice Model (Knowles et al., 2012) as a guide. Data in this instrumental case study were gathered from three semi-structured coach interviews, four focus group interviews (two with each cohort), and moderate participant observation (Spradley, 1980) to inform interview content. Results of qualitative analyses suggested, through the coach and athletes’ perspectives, that the coach oriented her approaches differently between MAs (aged 27-70) and youth (aged 14-15). She allowed the MAs to self-direct and make decisions, and encouraged them to ask questions collaboratively. Comparatively, she held a directed control and structure for the youth’s training influenced by highly competitive expectations. Despite differences, we acknowledge andragogy’s usefulness with both cohorts, and suggest that coaches recognize nuances between age groups that may influence how they orient their approaches.
Serum-Free Xenogen-Free Culture Conditions Support Human Explant-Derived Cardiac Stem Cell Growth
Creators: name: Mount, Seth
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017

description: Autologous explant-derived cardiac stem cell (EDC) therapies are a promising therapy for ischemic cardiomyopathy, but straightforward clinical translation is limited by traditional culture conditions which are often supplemented with ill-defined and xenobiotic components such as fetal bovine serum. Therefore, we investigated the influence of a commercially sourced serum-free (SF) xenogen-free medium on human EDC yield, phenotype, in vitro measures of EDC performance, and post-infarct cardiac repair using an immunodeficient mouse model of acute myocardial infarction. Despite reduced production of several pro-cardiogenic cytokines, SF EDCs promoted similar vessel formation, circulating stem cell recruitment and cardiogenic differentiation as compared to standard cultures. Transplant of SF EDCs into immunodeficient mice 1 week after myocardial infarction boosted post-ischemic repair beyond that of standard EDCs by enhancing viable myocardium within the infarct. These findings demonstrate that serum-free culture methods provide a superior cardiac-derived cell product with ready clinical translatability.
Measuring Music Reading: A Guide to Assessment Methods
Creators: name: Jensen, Mary Claire
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2016
Subjects: Music Reading
Sight Reading
Measurement
Assessment
Classification

description: Music reading is a complex skill. In order to better understand the reading process and evaluate the effects of teaching intervention, it is essential to measure this skill. Research in the field of music pedagogy has provided a number of studies concerned with the measurement of music reading, using varying methods of assessment. However, the corpus of literature is lacking in organization and clarity, in part due to the fact that the assessment methods come from diverse disciplines and the studies themselves may present a number of inconsistencies. Using a research model based on systematic review, the objective of the thesis is to provide an organized synopsis of music reading assessment methods. The thesis has identified and compiled a corpus of 88 relevant studies, with an emphasis on experimental keyboard research in the Western, classical, tonal tradition, though studies with woodwind, brass, percussion, and vocal instrumentation are included as necessary. The assessment methods employed in the studies are classified according to one of three broad categories: test measurements, eye-tracking measurements, and neurological measurements. The purpose of this guide is to be a reference for researchers and educational practitioners, and includes comparison and summary charts and a concluding index.
A Systems Analysis Approach to Colorectal Cancer Screening Access In the Northwest Territories
Creators: name: Champion, Caitlin
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2016
Subjects: health systems
health informatics
qualitative research
rural and remote health research

description: Introduction The Northwest Territories as a rural and remote region of Canada has higher colorectal cancer rates and lower uptake of colorectal cancer screening compared to the rest of the country. Understanding the complex health system processes involved in screening is necessary to develop informed solutions to improve screening access amongst marginalized populations. A systems approach to describe and understand the health care processes and system-level factors influencing colorectal cancer screening access was undertaken. Methods Semi-structured interviews with health care providers (N=29) involved in colorectal cancer screening in all health authorities within the Northwest Territories (N=8) were performed from September to December 2015. Interview transcripts were analyzed using qualitative content analysis methods within a Collaborative Information Behaviour (CIB) and Continuity of Care framework. Exploratory models of colorectal cancer screening processes were developed and translated into quantitative parameters for simulation modelling. Results Colorectal cancer screening access was defined by patient health care interactions supported by foundational information processes. Eighteen models of colorectal cancer screening access within the territory were identified, with varying complexity in care access seen across communities. Screening access problems included screening initiation, colonoscopy scheduling, screening recall and information silos, and were influenced by multiple contextual factors including a transient health work force, social health determinants, and patient travel. Qualitative models were translated into a system dynamics (SD) design framework for development of further quantitative modeling. Conclusions Colorectal cancer screening access in the Northwest Territories is a complex process comprising patient interactions and information processes linking primary care and hospital care processes, which are influenced by challenging contextual factors in the rural and remote health care environment. In developing screening access solutions the foundational role of information support and the need for system trade-offs in restructuring health system processes are necessary considerations. Optimizing information processes through the utilization of health informatics tools such as standardized referral forms and EMRs may also support health system transformation to improve screening access across the Northwest Territories. Understanding and evaluating system trade-offs may be best achieved using a combination of qualitative and quantitative modeling through future application of SD modeling research.
Lateral Torsional Buckling of Wood Beams
Creators: name: Xiao, Qiuwu
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: full-scale tests
FEA models
lateral torsional buckling

description: Structural wood design standards recognize lateral torsional buckling as an important failure mode, which tends to govern the capacity of long span laterally unsupported beams. A survey of the literature indicates that only a few experimental programs have been conducted on the lateral torsional buckling of wooden beams. Within this context, the present study reports an experimental and computational study on the elastic lateral torsional buckling resistance of wooden beams. The experimental program consists of conducting material tests to determine the longitudinal modulus of elasticity and rigidity modulus followed by a series of 18 full-scale tests. The buckling loads and mode shapes are documented. The numerical component of the study captures the orthotropic constitutive properties of wood and involves a sensitivity analysis on various orthotropic material constants, models for simulating the full-scale tests conducted, a comparison with experimental results, and a parametric study to expand the experimental database. Based on the comparison between the experimental program, classical solution and FEA models, it can be concluded that the classical solution is able to predict the critical moment of wood beams. By performing the parametric analysis using the FEA models, it was observed that loads applied on the top and bottom face of a beam decrease and increase its critical moment,respectively. The critical moment is not greatly influenced by moving the supports from mid-span to the bottom of the end cross-section.
Forgive & Forget? Attitudes Towards Forgiveness in the Case of Multiple, Similar Offenses
Creators: name: DeSchiffart, Erika
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2013
Subjects: Forgiveness
Offenses
Couple
Reconciliation

description: New research has emerged detailing the potential risks of forgiveness for couples as well as its benefits (McNulty, 2008, 2010, & 2011). Given the lack of research conducted on the perspective of the offending partner within the forgiveness process, this mixed method study examines the couple’s experience of the forgiveness and reconciliation process in the face of multiple, similar offenses. Though no support was found for the risks of forgiveness as proposed by McNulty (2011), factors that influenced the satisfaction of couples and the forgiveness process include self esteem, attachment, and spirituality. These factors, as well as the results from the qualitative interviews regarding inter-partner forgiveness, are discussed.
PyClone-VI: scalable inference of clonal population structures using whole genome data
Creators: name: Gillis, Sierra
name: Roth, Andrew J. L.
Publisher: name: BioMed Central
Year: 2020

description: Background: At diagnosis tumours are typically composed of a mixture of genomically distinct malignant cell populations. Bulk sequencing of tumour samples coupled with computational deconvolution can be used to identify these populations and study cancer evolution. Existing computational methods for populations deconvolution are slow and/or potentially inaccurate when applied to large datasets generated by whole genome sequencing data. Results: We describe PyClone-VI, a computationally efficient Bayesian statistical method for inferring the clonal population structure of cancers. We demonstrate the utility of the method by analyzing data from 1717 patients from PCAWG study and 100 patients from the TRACERx study. Conclusions: Our proposed method is 10–100× times faster than existing methods, while providing results which are as accurate. Software implementing our method is freely available https://github.com/Roth-Lab/pyclone-vi .
Indirect Methods for Constructing Radio Environment Map
Creators: name: Alfattani, Safwan
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: Rdio Environment Map
Cognitive radio
Radio Interference Field
Radio Environmental Map (REM)
REM construction methods
location estimation
transmitter localization
Dynamic spectrum access (DSA)

description: To solve the spectrum scarcity problem caused by the high number of wireless applications and users, the concept of cognitive radio (CR) was proposed in the past few years. Cognitive radio networks (CRNs) provide dynamic spectrum access (DSA), where the unlicensed users can access the spectrum without causing unacceptable level of interference to the primary user (PU). DSA was based on conventional spectrum sensing information or geolocation databases. Later, radio environment map (REM) as an improved geolocation database was introduced to enhance the DSA process. It is a comprehensive map consists of different integrated databases, and the interference field information is one of its databases. In this thesis, a description of the REM concept and its construction methods will be presented. The focus will be for the indirect methods for constructing interference map, which represents a layer of the REM. Indirect method refers to the methods that utilize known model information, to first estimate the primary transmitter parameters and then generate REM. Two indirect methods under lognormal shadowing were presented and compared. The better of these two methods is further investigated in different scenarios. These scenarios include different number of sensors, varied size of measurements, several shadowing spread values, different percentages of error in path-loss exponent, and the effect of the number of moving sensors and their speeds to the REM quality. The performance is evaluated using these metrics: “localization error, signal power error and correct detection zone ratio (CDZR). The results show that performance is enhanced as the number of sensors and the size of measurements increase, whereas clear degradation in REM quality is shown when shadowing spread increases or the model parameters are not well calibrated. Also, as the number of moving sensors or their speeds increase, the REM performance becomes less effective
Multiscale Embedding for Quantum Computing
Creators: name: Weisburn, Leah P.
name: Cho, Minsik
name: Bensberg, Moritz
name: Meitei, Oinam Romesh
name: Reiher, Markus
name: Van Voorhis, Troy
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a novel multi-scale embedding scheme that links conventional QM/MM embedding and bootstrap embedding (BE) to allow simulations of large chemical systems on limited quantum devices. We also propose a mixed-basis BE scheme that facilitates BE calculations on extended systems using classical computers with limited memory resources. Benchmark data suggest the combination of these two strategies as a robust path in attaining the correlation energies of large realistic systems, combining the proven accuracy of BE with chemical and biological systems of interest in a lower computational cost method. Due to the flexible tunability of the resource requirements and systematic fragment construction, future developments in the realization of quantum computers naturally offer improved accuracy for multi-scale BE calculations.
description: 29 pages, 18 figures, 2 tables; 10 main text figures, 8 supplemental figures
Data of behavioural experiments from Magnetic orientation in juvenile Atlantic herring (Clupea harengus) could involve Cryptochrome 4 as a potential magnetoreceptor
Creators: name: Laurien, Malien
name: Mende, Lara
name: Luhrmann, Lena
name: Frederiksen, Anders
name: Aldag, Mandus
name: Spiecker, Lisa
name: Clemmesen, Catriona
name: Solov’yov, Ilia A.
name: Gerlach, Gabriele
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310499
subject: Evolutionary biology not elsewhere classified

description: Original data
Follow-up of Neutron Star Mergers with CTA and Prospects for Joint Detection with Gravitational-Wave Detectors
Creators: name: Mondal, T.
name: Chakraborty, S.
name: Resmi, L.
name: Bose, D.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The joint gravitational wave (GW) and electromagnetic observations of the binary neutron star (BNS) merger GW170817 marked a giant leap in multi-messenger astrophysics. The extensive observation campaign of the associated Gamma-Ray Burst (GRB) and its afterglow has strengthened the hypothesis associating GRBs with BNS mergers and provided insights on mass ejection, particularly the relativistic outflow launched in BNS mergers. In this paper, we investigate the joint detection probabilities of BNS mergers by GW detectors and the upcoming ground-based very-high-energy (VHE) $γ$-ray instrument, the Cherenkov Telescope Array (CTA). Using an empirical relation that constrains the distance-inclination angle plane, we simulated BNS mergers detectable in the O5 run of the LIGO/Virgo/Kagra (LVK) network with $300$~Mpc BNS horizon. Assuming Gaussian structured jets and ignoring large sky localization challenges of GW detectors, we estimated VHE afterglow detection probability by CTA. We have explored the afterglow parameter space to identify conditions favourable for detecting synchrotron self-Compton emission by CTA. Our study reveals that events viewed at angles $\lesssim3$ times the jet core angle are detectable by CTA when the initial bulk Lorentz factor at the jet axis ranges between 100 and 800. We find high kinetic energy ($E_k>10^{50}$ erg), ambient density ($n_0>10^{-1}$ $cm^{-3}$), and energy content in non-thermal electrons significantly enhance the likelihood of CTA detection within 300 Mpc. The joint detection rate varies significantly with afterglow parameter distributions, ranging from $0.003$ to $0.5$ per year.
description: 16 pages, 8 figures
Enigmatic 2+6/13 Filling Factor: A Prototype Intermittent Topological State
Creators: name: Das, Sudipto
name: Das, Sahana
name: Mandal, Sudhansu S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Observation of filling factor 6/13 is one of the surprising fractional quantum Hall states in the second Landau level because, in contrast to the standard wisdom, the fractions ($ν< 1/2$) with lower numerators, namely 4 and 5, have not yet been observed. We find that a state indeed forms at $ν=6/13$ as an intermittent topological state between two prominent states at $ν=1/2$ and $ν= 2/5$ with lower numerators. Also, we predict that a state forms at $ν=5/13$ as an intermittent to $ν= 2/5$ and $ν=3/8$. Our proposed wave functions for $ν=6/13$ and $5/13$ have excellent overlaps with the corresponding exact ground state wave functions. The Chern-Simons coupling matrices deduced from the form of these wave functions are analyzed to predict the topological properties, which may be experimentally verified.
Neurofunctional and Neuroanatomical Hippocampal Deficits and Connectivity Differences in Schizophrenia Compared to Healthy Control Participants Tested on a Virtual Reality Navigation Wayfinding Task: An fMRI, VBM and Effective Connectivity Study
Creators: name: Ledoux, Andrée-Anne
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2013
Subjects: Schizophrenia
Visuospatial navigation
Wayfinding
Hippocampus
fMRI
VBM
Effective connectivity
Episodic memory
Contextual binding
Virtual reality
Control participants

description: Episodic memory is a key feature in learning. One must remember past events to act upon a present situation. Episodic memory has been reported to be impaired in individuals with schizophrenia. In order to have an intact episodic memory the contextual features (context) must be bound to the content of the event; this mechanism is referred to as contextual binding. It is proposed that binding errors during the encoding process are responsible for episodic memory impairments in schizophrenia. Since the hippocampal formation is considered to be the central element for contextual binding, it is hypothesized that the synaptic disorganization described in this condition results in such a deficit. Moreover, the hippocampus mediates and influences other cognitive processes such as learning and executive functioning. Hence, a contextual binding deficit can have important consequences on cognition, behaviour and emotions. The object of this dissertation was to investigate the neurofunctioning, neuroanatomy and neurofunctional connectivity of the hippocampus while performing a task that utilized contextual binding mechanisms. Since spatial relational processing is part of contextual binding and is rooted in the hippocampal regions, visuospatial navigation, more precisely a wayfinding task, was used as a probe to activate the hippocampus and its associated regions in a group of patients with schizophrenia and matched healthy controls. The following dissertation presents three original research papers contributing to our understanding of the contextual binding and hippocampal deficits in schizophrenia. The first paper investigates the neurofunctioning of the hippocampus with a wayfinding task. The second paper investigates the hippocampal structural abnormality in schizophrenia and how it relates to performance during the wayfinding task. The third paper explores effective connectivity of the hippocampus with other brain regions involved in navigation in schizophrenia with a particular interest in the prefrontal cortex. These three studies demonstrate significant neurofunctional, neuroanatomical, and neurofunctional connectivity deficits in the hippocampus of the patients with schizophrenia compared to a healthy control population. Results of all three papers are further discussed in terms of research and clinical implications.
Essential work, precarious labour : The need for safer and equitable harm reduction work in the era of COVID-19
Creators: name: Olding, Michelle
name: Barker, Allison
name: McNeil, Ryan, 1982-
name: Boyd, Jade
Publisher: name: Elsevier
Year: 2021

description: This commentary highlights labour concerns and inequities within the harm reduction sector that hinder programs’ ability to respond to converging public health emergencies (the overdose crisis and COVID19), and potentially contribute to spread of the novel coronavirus. Many harm reduction programs continue to support people who use illicit drugs (PWUD) during the pandemic, yet PWUD working in harm reduction programs (sometimes termed ‘peers’) experience precarious labour conditions characterized by low wages, minimal employee benefits (such as paid sick leave) and high employment insecurity. Along with precarious labour conditions, PWUD face heightened vulnerabilities to COVID-19 and yet have been largely overlooked in global response to the pandemic. Operating under conditions of economic and legal precarity, harm reduction programs reliance on precarious labour (e.g. on-call, temporary and unpaid work) renders some services vulnerable to staffing shortages and service disruptions during the pandemic, while also heightening the risk of virus transmission among workers, service users and their communities. We call for immediate policy and programmatic actions to strengthen working conditions within these settings with a priority on enhancing protections and supports for workers in peer roles.
The Geographies of Second-generation Muslim Women: Identity Formation and Everyday Experiences in Public Space
Creators: name: Lagasi, Alisha C.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2013
Subjects: public space
identity
Islam
second generation
gender
discomfort

description: This project is interested in the ways that second-generation Muslim women experience public space, in particular with respect to how their identities and sense of belonging are shaped through everyday encounters in public. This implicates the reactions and behaviours of strangers who they meet in public, their own bodily comportment, and the ideas and values communicated by their parents and other co-ethnics about women’s place in public space, as well as the ways that religiosity may enhance or hinder everyday belonging. Through the use of qualitative, one-on-one interviews, this research seeks to investigate daily experiences within Ottawa, Canada, particularly with respect to how such interactions inform a sense of (dis)comfort and belonging in public space in Canadian society. Moreover, this project is interested in the negotiation that many second-generation Muslim women undertake between family and ethno-religious community values and those of mainstream Canadian society in urban public spaces. In order to address these topics, the study examines Muslim women’s everyday experiences in public – the ways in which visibility and generational status can influence daily encounters and (dis)comfort, as well as women’s ability to actively negotiate their identity and belonging through engagement with strangers and acquaintances.
Cardiac Responses to Carbon Dioxide in Developing Zebrafish (Danio rerio)
Creators: name: Miller, Scott
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2013
Subjects: zebrafish
NEC
hypercapnia
chemosensing

description: The ontogeny of carbon dioxide (CO2) sensing in zebrafish (Danio rerio) has not been studied. In this thesis, CO2-mediated increases in heart rate were used to gauge the capacity of zebrafish larvae to sense CO2. CO2 is thought to be sensed through neuroepithelial cells (NECs), which are homologous to mammalian carotid body glomus cells. Owing to its role in facilitating intracellular acidification during exposure to hypercapnia, it was hypothesized that carbonic anhydrase (CA) is involved in CO2 sensing, and that inhibition of CA would blunt the downstream responses. The cardiac response to hypercapnia (0.75% CO2) was reduced in fish exposed to acetazolamide, a CA inhibitor, and in fish experiencing CA knockdown. Based on pharmacological evidence using β-adrenergic receptor (ß-AR) antagonists, and confirmed by β1AR gene knockdown, the efferent limb of the reflex tachycardia accompanying hypercapnia is probably mediated by sympathetic adrenergic neurons interacting with cardiac β1 receptors.
"The Three Amigos": Subtitling Health Communication for the Deaf and Hard of Hearing
Creators: name: Sukharukava, Yauheniya
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: health communication
audiovisual translation
subtitling
Subtitles for the Deaf and Hard of Hearing
adaptation
public service announcement

description: Contemporary scholars have been studying audiovisual translation for the past twenty years. However, health communication has never yet been included as a part of the audiovisual material under discussion. The goal of this thesis is to create Russian subtitles for the deaf and hard of hearing from the original English version of The Three Amigos, a series of PSAs (Public service announcements) regarding the prevention of HIV/AIDS, and to analyse and discuss the theoretical and practical aspects of this work. After analysing the current situation on HIV/AIDS in Russia and Belarus, I use this series entitled The Three Amigos as an example of health communication that works, and therefore, should be accessible to more viewers. The thesis is organised into three chapters. Following a general introduction, Chapter 1 discusses health communication, presents statistics on HIV/AIDS in Russia and Belarus, and provides an example of health communication that fulfills its functions – public service announcements on HIV/AIDS prevention in the form of The Three Amigos. Chapter 2 discusses the necessity of subtitling for the target audience, and emphasises the fact that people with hearing impairment need special subtitles that differ from the ones that are suitable for viewers without hearing impairment. Chapter 3 contains the analysis of the subtitles for the deaf and hard of hearing that I created for this project. Finally, the conclusion summarises the findings of this research, and addresses possible directions for future projects on this topic.
Specific heat of the driven Curie-Weiss model
Creators: name: Fiori, Elena Rufeil
name: Maes, Christian
name: Vidts, Robbe
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Applying a time-periodic magnetic field to the standard ferromagnetic Curie-Weiss model brings the spin system in a steady out-of-equilibrium condition. We recall how the hysteresis gets influenced by the amplitude and the frequency of that field, and how an amplitude- and frequency-dependent (dynamical) critical temperature can be discerned. The dissipated power measures the area of the hysteresis loop and changes with temperature. The excess heat determines a nonequilibrium specific heat giving the quasistatic response. We compute that specific heat, which appears to diverge at the critical temperature, quite different from the equilibrium case.
description: 9 figures
The notion of Equity in the Determination of Maritime Boundaries and its Application to the Canada-United States Boundary in the Beaufort Sea
Creators: name: St-Louis, Carole
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: maritime boundary
law of the sea
Beaufort Sea
Equity
continental shelf

description: Of the maritime boundaries yet to be delimited between Canada and the United States, the Beaufort Sea might be the more pressing one, considering its strategic location in a rapidly developing Arctic region and its vast economic potential. In accordance with the Law of the Sea Convention (UNCLOS), maritime boundaries are to be delimited by agreement on the basis of international law as referred to in Article 38 of the Statute of the International Court of Justice, in order to reach an equitable solution. When an agreement cannot be reached, parties can resort to third-party arbitration. While jurisprudence has determined that international law does not mandate a particular method of delimitation, it requires the consideration of equitable principles, also called special circumstances or factors. The notion of equity is therefore the foundation of boundary determination. But, what is equity and how is it applied? This thesis examines the various forms of equity, their origins in legal philosophy and domestic law and how they have been incorporated in international law. The main focus, however, is to analyse the differences between how international tribunals or courts have interpreted and applied equity in boundary determination and how States have applied it in negotiated agreements. While tribunals have tended to consider equitable principles as equivalent to geographical proportionality, States have considered those principles more in keeping with the notion of distributive justice and, more and more, are taking a globalised approach to boundary determination. On the basis of this analysis, this thesis evaluates the potential outcome of a third-party arbitration of the Beaufort Sea boundary dispute between Canada and the United States as well as the options for settlement negotiations between the Parties. In the Beaufort Sea area where hydrocarbon development is intrinsically linked not only to the development of the local population but also to the entire Arctic region, be it on issues related to the environment, navigation or security, the thesis concludes that a third-party adjudication would not serve the interests of the States. As delimiting boundaries nowadays is only one aspect of the management of oceans related issues, interests are best served when delimitation is understood as part of this global approach.
VAFB-2000-13: Final Limited Archaeological Testing for New Maintenance Facility Construction at Marshallia Ranch Golf Course, VAFB, SB Co., CA.
Creators: name: Lebow, Clayton G.
Year: 2000

description: This document is a report that describes limited archaeological testing at the Marshallia Ranch Golf Course for the development of a new maintenance facility. A total of 20 shovel test pits were excavated and a small quantity of lithic debitage and historic artifacts were found in disturbed soils. No further archaeological studies were recommended for the project due to a lack of integrity.
Development of a Mathematical Model to Understand, Design & Improve Oncolytic Virus Therapies
Creators: name: Batenchuk, Cory
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: Systems Biology
Synthetic Biology
Modelling Biological Systems
Oncolytic Virus
Cancer Therapies

description: Oncolytic viruses (OVs) are emerging as a potent therapeutic platform for the treatment of malignant disease. The tumor cells inability to induce antiviral defences in response to a small cytokine known as interferon (IFN) is a common defect exploited by OVs. Heterogeneity in IFN signalling across tumors is therefore a pillar element of resistance to these therapies. I have generated a mathematical model and simulation platform to study the impact of IFN on OV dynamics in normal and cancerous tissues. In the first part of my thesis, I used this model to identify novel OV engineering strategies which could be implemented to overcome IFN based resistance in tumor tissues. From these simulations, it appears that a positive feedback loop, established by virus-mediated expression of an interferon-binding decoy receptor, could increase tumor cytotoxicity without compromising normal cells. The predictions set forth by this model have been validated both qualitatively and quantitatively in in-vitro and in-vivo models using two independent OV strains. This model has subsequently been used to investigate OV attenuation mechanisms, the impact of tumor cell heterogeneity, as well as drug-OV interactions. Following these results, it became apparent that selectivity should equally be observed when overwhelming the cell with a non replicating virus. While normal tissues will clear this pseudo-infection rapidly, owing to their high baseline in antiviral products at the onset of infection, tumor cells with defective anti-viral pathways should not have readily available biomachinery required to degrade this pro-apoptotic signal. Recapitulated by the mathematical model, non-replicating virus-derived particles generated by means of UV irradiation selectively kill tumor cells in cultured cell lines and patient samples, leading to long term cures in murine models. Taken together, this thesis uses a novel mathematical model and simulation platform to understand, design & improve oncolytic virus-based therapeutics.
Effect of Permafrost Thaw Slumps on Benthic Invertebrates and on Concentrations of Persistent Organic Pollutants in Lakes of the Mackenzie Delta Uplands, NT
Creators: name: Rebecca, D'Onofrio
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: Permafrost thaw slump
Persistent Organic Pollutant
POP
Size Spectra
Benthic macroinvertebrate

description: Permafrost thaw slumping along lakeshores in lakes of the Mackenzie Delta Uplands, NT is known to alter water chemistry significantly. Its impact on benthic communities and persistent organic pollutant (POP) behaviour in lakes is not known. Benthic invertebrate communities responded to slumps through changes to community composition and size spectra. Larger taxa tended to dominate in lakes with slumps. Variability in biomass size spectra was related to total dissolved nitrogen concentration and slump size. Concentrations of POPs in Gammarus were negatively correlated with total phosphorus and positively correlated with the percentage of the catchment slumped. Lakes with slumps generally had higher mean concentrations of POPs in Gammarus (ex. ΣPCBsDisturbed = 27.54 ng/g lipid, ΣPCBsUndisturbed = 16.97 ng/g lipid; ΣDDT Disturbed =18.47 ng/g lipid and ΣDDTUndisturbed =10.86 ng/g lipid). Benthic invertebrate biomass was also negatively correlated with concentrations of contaminants in Gammarus, supporting the biomass dilution hypothesis. Thaw slumps have large enough impacts on the physico-chemical characteristics of lakes that they alter benthic invertebrate community composition and size-structure, and contaminant concentrations in Gammarus.
Adaptive Anomaly Detection in Network Flows with Low-Rank Tensor Decompositions and Deep Unrolling
Creators: name: Schynol, Lukas
name: Pesavento, Marius
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Anomaly detection (AD) is increasingly recognized as a key component for ensuring the resilience of future communication systems. While deep learning has shown state-of-the-art AD performance, its application in critical systems is hindered by concerns regarding training data efficiency, domain adaptation and interpretability. This work considers AD in network flows using incomplete measurements, leveraging a robust tensor decomposition approach and deep unrolling techniques to address these challenges. We first propose a novel block-successive convex approximation algorithm based on a regularized model-fitting objective where the normal flows are modeled as low-rank tensors and anomalies as sparse. An augmentation of the objective is introduced to decrease the computational cost. We apply deep unrolling to derive a novel deep network architecture based on our proposed algorithm, treating the regularization parameters as learnable weights. Inspired by Bayesian approaches, we extend the model architecture to perform online adaptation to per-flow and per-time-step statistics, improving AD performance while maintaining a low parameter count and preserving the problem's permutation equivariances. To optimize the deep network weights for detection performance, we employ a homotopy optimization approach based on an efficient approximation of the area under the receiver operating characteristic curve. Extensive experiments on synthetic and real-world data demonstrate that our proposed deep network architecture exhibits a high training data efficiency, outperforms reference methods, and adapts seamlessly to varying network topologies.
description: 18 pages, 7 figures
LET-06: VAFB Request for SHPO Concurrence for Vandenberg Tracking Station (VTS) Low Profile Antenna Construction Project
Creators: name: Loetzerich, Roscoe
Year: 2008
Subjects: subject: Consultation
valueUri: https://core.tdar.org/browse/investigation-type/4/consultation

description: This document is Section 106 transmittal letter to the California State Historic Preservation Office (SHPO) for the Vandenberg Tracking Station (VTS) Low Profile Antenna Construction Project. The letter provides details about the project VAFB Request for SHPO Concurrence for Vandenberg Tracking Station (VTS) Low Profile Antenna Construction Project. The letter discusses details associated with this high level priority project for the tenant organization of the 148th Space Operations Squadron to convert an existing concrete pad to support a Low Profile antenna critical to the mission activities on VAFB. The letter seeks SHPO concurrence 1) for the project Area of Potential Effect, 2) that the project will not adversely affect the archaeological site CA-SBA-793, and 3) that the project finding of no adverse effect to historic properties is appropriate.
VAFB-1991-08: Cultural Resources Investigations for the Peacekeeper Program San Antonio Terrace Vandenberg Air Force Base, California
Creators: name: Tetra Tech Inc.
Year: 1991

description: This document is a report that presents the results of cultural resource investigations for the Peacekeeper Rail Garrison Project on Vandenberg Air Force Base, California. This report covers additional survey, testing, and data recovery undertaken for the project at 29 archaeological sites.
Assessing the Function of Irony in Continental Philosophy's Return to Religion: After the Death of God (the Vattimo/Caputo Dialogue)
Creators: name: Kennedy, Robert
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: Irony
Continental Philosophy
Return to Religion
Caputo
Vattimo

description: John D. Caputo and Gianni Vattimo are two of the main thinkers in continental philosophy’s return to religion. This return is accommodated by the basic theoretical framework of irony, which is predominantly an unspoken determinant upon textual meaning. In this continental sense, irony affirms and negates the subject matter that it speaks about. Adopting this framework, Caputo and Vattimo suggest that a new Christian-irony is desirable to avert a collapse back into the violence that results from metaphysics, either modern or classical, by remaining in deconstruction’s loosely held wavering between theism and atheism. The question that remains to be proven, however, is whether their ironic method of writing is not inadvertently continuing the negative effect of the Nietzschean-Heideggerian paradigm by persisting with the literary style of writing that is intrinsic to it, even while openly refuting it by their affirmative Judeo-Christian surface content.
Tunable Slow and Fast Light Generation and the Applications in Microwave Photonics
Creators: name: Shahoei, Hiva
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: Slow and fast light
microwave photonics
optical signal processing

description: In this thesis, new techniques to generate slow and fast light are proposed and investigated. The use of the slow and fast light for microwave photonics applications is also investigated. This thesis consists of four parts. In the first part, the generation of slow and fast light based on fiber Bragg gratings (FBGs) is studied. Two techniques are proposed. In the first technique, slow and fast light is generated based on a linearly chirped fiber Bragg grating (LCFBG); and in the second technique, slow and fast light is generated based on a tilted fiber Bragg grating (TFBG). Theoretical analysis is performed which is verified by experiments. In the second part, the applications of FBG-based slow and fast light in microwave photonics are studied. These applications include all-optical tunable microwave frequency multiplication, tunable microwave chirped pulse generation, tunable phase shifting, tunable fractional order differentiation, and tunable microwave photonic filtering. In the third part, the generation of slow and fast light based on microring resonators (MRRs) is studied. Novel methods to obtain continuously tunable slow to fast light are proposed and experimentally demonstrated by using a silicon-on-insulator (SOI) MRR with MMI (multi-mode interference) couplers, and a high-contrast Ge-doped silica-on-silicon (SOS) MRR. In the fourth part, the applications of the MRR-based slow and fast light in microwave photonics are studied. These applications include all-optical tunable fractional order differentiation, and tunable fractional order Hilbert transformation.