cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effect of Phase-Contacting Patters and Operating Conditions on Gas Hydrate Formation
Creators: name: Sarah, Oddy
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: Gas Hydrates
Phase-Contacting Patterns
Reactor Design
Bubble Column
Stirred Tank

description: Research into hydrate production technologies has increased in the past years. While many technologies have been presented, there is no consensus on which reactor design is best for each potential application. A direct experimental comparison of hydrate production technologies has been carried out in between a variety of reactor configurations at similar driving force conditions. Three main reactor types were used: a stirred tank, a fixed bed and a bubble column and compared different phase contacting patterns for the stirred tank and bubble column. In the initial phase of hydrate formation in a stirred tank, formation was mass and heat transfer limited at the lower stirring speed, and heat transfer limited at the higher stirring speed. After more than 10% of the water had been converted to hydrate, formation was mass transfer limited regardless of the other conditions. Neither the use of a gas inducing impeller, nor a 10 wt% particle slurry significantly affected hydrate formation rates; however, the particle slurry did lower the induction time. Due to the poor scale-up of impeller power consumption in a stirred tank, a semi-batch fixed bed was studied since it does not require any power input for mixing. The significantly slower rates of formation observed in the semi-batch fixed bed, as well as the lost reactor capacity to particles, mean that this type of system would require a much larger reactor. Faster volume and power normalized rates of hydrate formation were observed in the bubble column than in a stirred tank at similar mass transfer driving force conditions. Higher conversions of water to hydrate were observed in the bubble column because mixing was accomplished by bubbling gas from the bottom rather than by an impeller. The highest conversions of water and gas were achieved during a later stage of accelerated hydrate formation, indicating an optimal hydrate fraction for continuously operated bubble column reactors. The second stage of hydrate formation occurred more frequently at higher gas flowratess. Therefore, the increased water conversion and single-pass gas conversion justify the increased energy input required by the higher gas flowrate. Balancing the rates of mass transfer and heat removal was also critical for optimal bubble column as insufficient mass transfer would result in a lower rate of formation and insufficient heat transfer would cause previously formed hydrates to dissociate. The addition of 10wt% glass beads to the reactor promoted hydrate formation; however, it did not do so sufficiently to make up for the loss in reactor capacity or the increased energy requirement.
Activation of the Retinoid X Receptor Augments the Expression of Akt2 to Enhance Myogenic Differentiation
Creators: name: Alsudais, Hamood
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2015
Subjects: myogenesis
Akt
RXR
cachexia

description: Cachexia or muscle atrophy is a condition that is associated with a variety of diseases such as chronic heart failure and cancer. In North America, Europe and Japan, more than 8 million patients suffer from cachexia, and it is estimated that cachexia is the cause of death in 30% of cancer patients. Unfortunately, there is no available treatment for cachexia. Bexarotene, a retinoid X receptor (RXR) agonist, is a FDA approved drug used to treat cancer and is able to induce myogenic differentiation in embryonic stem cells. In this study, we investigated the mechanism by which bexarotene enhances myogenic differentiation. The Akt signaling pathway is required for myogenesis and thus we examined its involvement in bexarotene-enhanced myogenic differentiation. We showed that bexarotene, through the activation of RXR signaling, regulates Akt2 expression to enhance myoblast differentiation and fusion. Additionally, we showed that Akt2, but neither Akt1 nor Akt3, is required for bexarotene-enhanced differentiation. Furthermore, we showed that the activation of RXR signaling by bexarotene correlates with a specific histone acetylation mark at the Akt2 locus. More importantly, we demonstrated that bexarotene is able to rescue myoblast differentiation in an in vitro cachexia system. Taken together, our data revealed the significance of Akt2 in bexarotene-enhanced myogenic differentiation and the potential of using bexarotene as a treatment for cachexia.
Precision VLBI astrometry: instrumentation, algorithms and pulsar parallax determination
Creators: name: Deller, Adam
Publisher: name: Swinburne
Year: 2024

description: This thesis describes the development of DiFX, the first general-purpose software correlator for radio interferometry, and its use with the Australian Long Baseline Array to complete the largest Very Long Baseline Interferometry (VLBI) pulsar astrometry program undertaken to date in the Southern Hemisphere. This two year astrometry program has resulted in the measurement of seven new pulsar parallaxes, which has more than trebled the number of measured VLBI pulsar parallaxes in the Southern Hemisphere. These measurements included a determination of the distance and transverse velocity of PSR J0437-4715 with better than 1% accuracy, enabling improved tests of General Relativity; the first significant measurement of parallax for the famous double pulsar system PSR J0737-3039A/B, which will allow tests of General Relativity in this system to proceed to the 0.01% level and also offers insights into its formation and high-energy emission; and a factor of four revision to the estimated distance of PSR J0630-2834, which had previous appeared to possess extremely unusual x-ray emission characteristics. Additionally, the ensemble of refined distance and transverse velocity estimates have enabled a widely applicable improvement in knowledge of pulsar luminosities in several wavebands and the Galactic electron distribution at southern latitudes. Finally, the DiFX software correlator developed to enable this science has been extensively tested and verified against three existing hardware correlators, and is now an integral part of the upgraded Long Baseline Array Major National Research Facility used by astronomers throughout Australia and the world; furthermore, it has been selected to facilitate a major upgrade of the world's only full-time VLBI instrument, the Very Long Baseline Array operated by the National Radio Astronomy Observatory in the US.
Electronic supplementary material from Novel phylogenomic inference and ‘Out of Asia’ biogeography of cobras, coral snakes, and their allies
Creators: name: Weinell, Jeffrey L.
name: Burbrink, Frank T.
name: Das, Sunandan
name: Brown, Rafe
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310499
subject: Evolutionary biology not elsewhere classified

description: Tissues, target loci sampling, species sampling, and geographic regions
Are we ready for artificial intelligence health monitoring in elder care?
Creators: name: Ho, Anita
Publisher: name: BioMed Central
Year: 2020

description: Background: The world is experiencing a dramatic increase in the aging population, challenging the sustainability of traditional care models that have relied on in-person monitoring. This debate article discusses whether artificial intelligence health monitoring may be suitable enhancement or replacement for elder care. Main text: Internationally, as life expectancy continues to rise, many countries are facing a severe shortage of direct care workers. The health workforce is aging, and replacement remains a challenge. Artificial intelligence health monitoring technologies may play a novel and significant role in filling the human resource gaps in caring for older adults by complementing current care provision, reducing the burden on family caregivers, and improving the quality of care. Nonetheless, opportunities brought on by these emerging technologies raise ethical questions that must be addressed to ensure that these automated systems can truly enhance care and health outcomes for older adults. This debate article explores some ethical dimensions of using automated health monitoring technologies. It argues that, in order for these health monitoring technologies to fulfill the wishes of older adults to age in place and also to empower them and improve their quality of life, we need deep knowledge of how stakeholders may balance their considerations of relational care, safety, and privacy. Conclusion: It is only when we design artificial intelligence health monitoring technologies with intersecting clinical and ethical factors in mind that the resulting systems will enhance productive relational care, facilitate independent living, promote older adults’ health outcomes, and minimize waste.
Impact of Low Temperature on RNA Splicing of Aberrant Mitochondrial Group II Introns in Wheat Embryos
Creators: name: Dalby, Stephen J.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2013
Subjects: Mitochondria
Splicing
Intron
Ribozyme
Evolution
Cold

description: A subset of mitochondrial group II introns of flowering plants has, over evolutionary time, lost characteristic features and employs unconventional splicing pathways. Given the potential impact of cold treatment on RNA folding, as well as on enzymatic activity and import of nuclear-encoded splicing machinery, I have examined the physical excised forms of aberrant introns from wheat embryos subjected to 4oC. My findings suggest a shift in biochemistry with cold treatment to novel splicing pathways that generate heterogeneous in vivo circularized forms for nad1 intron 2, nad2 intron 1 and the cox2 intron, in contrast to predominantly linear excised intron forms at room temperature. Interestingly, the highly degenerate nad1 intron 1, which due to DNA rearrangement has been broken into two halves that interact for splicing in trans, is excised exclusively by first-step hydrolysis at room temperature and under cold treatment. In this case, splicing culminates in two distinct linear half introns that appears correlated with an unusual 5’ terminal insert. This represents the first in vivo demonstration of hydrolytic trans-splicing. Based on northern analysis, cold treatment was further associated with reduced splicing efficiency for all introns surveyed. Moreover, study of precursor transcripts of the nad1a-intron 1a locus suggests the efficiency of end-maturation, including processing of the cotranscribed tRNA-Pro gene, is also reduced in the cold. My findings demonstrate a temperature-sensitivity of transcript maturation, particularly for RNA splicing, providing new insight into the impact of cold growth conditions on plant mitochondrial gene expression.
Representing Parliament: Poets, MPs, and the Rhetoric of Public Reason, 1640-1660
Creators: name: Tanner, Rory
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: parliament
poetry
public sphere
manuscript studies
John Milton
Thomas Fairfax

description: Much recent scholarship celebrates the early modern period for its development of broader public political engagement through printed media and coffeehouse culture. It is the argument of this study that the formation in England under Charles II of a public sphere may be shown to have followed a reassessment of political discourse that began at Westminster during the troubled reign of that king’s father, Charles I. The narrative of parliament’s growth in this era from an “event to an institution,” as one historian describes it, tells of more than opposition to the King on the battlefields of the English Civil War. Parliament-work in the early years of England’s revolutionary decade also set new expectations for rhetorical deliberation as a means of directing policy in the House of Commons. The ideals of discursive politics that were voiced in the Short Parliament (May 1640), and more fully put into practice in the opening session of the Long Parliament (November 1640), were soon also accepted by politically-minded authors and readers outside Westminster. Prose controversy published in print and political poetry that circulated in manuscript both demonstrate that the burgeoning culture of debate outside parliament could still issue “in a parliamentary way.” Such promotion of productive textual engagements eventually constituted a wider, notional assembly, whose participants – citizen readers – were as much a product of deliberate education and fashioning as they were of the “conjuring,” “interpellation,” or “summoning” that recent scholarly vocabulary suggests. Following the spirit of reform in the English parliament, and subsequently developing through the years of partisan political writing that followed, public opinion, like the Commons, established itself in this era as an institution in its own right. These public and private assemblies disseminated the unprecedented amount of parliamentary writing and record-keeping that distinguishes the period under review, and this rich archive provides the literary and historical context for this study.
KNN Query Processing in Wireless Sensor and Robot Networks
Creators: name: Xie, Wei
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: Wireless Sensor and Robot Networks
Wireless Sensor Networks
KNN Query Processing

description: In Wireless Sensor and Robot Networks (WSRNs), static sensors report event information to one of the robots. In the k nearest neighbour query processing problem in WSRNs, the robot receives event report needs to find exact k nearest robots (KNN) to react to the event, among those connected to it. We are interested in localized solutions, which avoid message flooding to the whole network. Several existing methods restrict the search within a predetermined boundary. Some network density-based estimation algorithms were proposed but they either result in large message transmission or require the density information of the whole network in advance which is complex to implement and lacks robustness. Algorithms with tree structures lead to the excessive energy consumption and large latency caused by structural construction. Itinerary based approaches generate large latency or unsatisfactory accuracy. In this thesis, we propose a new method to estimate a search boundary, which is a circle centred at the query point. Two algorithms are presented to disseminate the message to robots of interest and aggregate their data (e.g. the distance to query point). Multiple Auction Aggregation (MAA) is an algorithm based on auction protocol, with multiple copies of query message being disseminated into the network to get the best bidding from each robot. Partial Depth First Search (PDFS) attempts to traverse all the robots of interest with a query message to gather the data by depth first search. This thesis also optimizes a traditional itinerary-based KNN query processing method called IKNN and compares this algorithm with our proposed MAA and PDFS algorithms. The experimental results followed indicate that the overall performance of MAA and PDFS outweighs IKNN in WSRNs.
From the Theory of Archival Narrative to the Practice of Archival Blogging: Why the Characteristics of Narrative Matter
Creators: name: Patti, Harper
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: Archival Narrative
Socia media
Archives as Subject
Blogging
Characteristics of narrative

description: This thesis aims at defining the archival narrative from the discourse between archivists and historians writing on “archives as subject”. The objectives of this thesis are to identify and define the characteristics of archival narrative and to apply these characteristics to archival blogging. Qualitative and reflective, this research conducted a comprehensive and systematic literature review on “archives as subject” to produce a conceptual framework that defines archival narrative and its characteristics. A content analysis was also conducted to determine how the characteristics defining archival narrative are represented within archival blogs. The content analysis identifies, refines and defines the characteristics of archival narrative. As archives evolve in the digital world, social media and the demand for increased patron engagement, archivists’ must recognize their own expertise while sharing the characteristics of archival narrative. This will contribute to a more transparent and accountable archival profession.
Supplementary document for Ultrafast-laser-absorption spectroscopy in the mid-infrared for single-shot, calibration-free temperature and species measurements in low- and high-pressure combustion gases - 5409380.pdf
Creators: name: Tancin, Ryan
name: Goldenstein, Christopher
Publisher: name: Optica Publishing Group
Year: 2021
Subjects: Uncategorized

description: Supplemental document containing key considerations for acquiring ULAS measurements.
Pratiques déclarées d’enseignement et d’évaluation de l’oral d’enseignants du 3e cycle du primaire : comparaison de résultats de recherches au Québec et en Espagne
Creators: name: RICS, Revue
name: Dumais, Christian
name: Nolin, Raymond
name: Mena, Eva M. Iñesta
Publisher: name: figshare
Year: 2022
Subjects: Education

description: La littératie inclut l’ensemble des compétences qui permettent aux individus non seulement de vivre en société, mais également d’y contribuer. La compétence à communiquer oralement est au cœur de la littératie et occupe une place importante dès le début de la scolarité. En rehaussant les habiletés des élèves à l’oral, cela favorise le développement des compétences en littératie des adultes de demain. Par conséquent, il est essentiel d’enseigner et d’évaluer l’oral dès l’école primaire, mais qu’en est-il des perceptions et des pratiques des enseignants? Ce texte propose une mise en commun de deux recherches menées respectivement au Québec et en Espagne à partir d’un même questionnaire d’enquête portant sur les pratiques d’enseignement et d’évaluation de l’oral en français et en espagnol langues premières. Les perceptions et les pratiques d’enseignants de ces deux communautés linguistiques ainsi que les points de convergence et de divergence sont présentés.
title: Optimal Relative Path Planning for Constrained Stochastic Space Systems
Creators: name: Stastny, Nathan Bohus
Publisher: name: Utah State University
Year: 2022

description: Rendezvous and proximity operations for automated spacecraft systems requires advanced path planning techniques that are capable of generating optimal paths. Real-world constraints, such as sensor noise and actuator errors, complicate the planning process. Operations also require flight safety considerations in order to prevent the spacecraft from potentially colliding with the associated companion spacecraft. This work proposes a new, ground-based trajectory planning approach that seeks an optimal trajectory while meeting all mission constraints and accounting for vehicle performance and safety requirements. This approach uses a closed-loop linear covariance simulation of the relative trajectory coupled with a genetic algorithm to determine fuel optimal trajectories. Spacecraft safety is addressed using statistical data from the linear covariance model to bound the probability of collision.
Modern work patterns of “classic” versus millennial family doctors and their effect on workforce planning for community-based primary care: a cross-sectional survey
Creators: name: Hedden, Lindsay
name: Banihosseini, Setareh
name: Strydom, Nardia
name: McCracken, Rita
Publisher: name: BioMed Central
Year: 2020

description: Background: There are ongoing accessibility challenges in primary care in British Columbia, Canada, with 17% of the population not having a regular source of care. Anecdotal evidence suggests that physicians are moving away from a community-based comprehensive practice model, which could contribute to shortages. Thus, we aimed to identify and describe how family physicians are currently organizing their primary care practices in a large health region in British Columbia and to examine differences between newer graduates and more established physicians. Methods: Data for this cross-sectional study were drawn from an annual physician privileging survey. N = 1017 physicians were invited to participate. We categorized practice style into five distinct groupings and compared features across respondent groups, including personal and practice location characteristics, hospital and teaching work, payment and appointment characteristics, and scope of practice. We discuss the implications of styles of practice and associated characteristics on health workforce policy and planning. Results: We received responses from 525 (51.6%) physicians. Of these, 355 (67.6%) reported doing at least some community-based primary care. However, only 112 (21.3%) provided this care full time. Most respondents supplemented community-based work with part-time hours in focused practice, hospitals, or inpatient facilities. We found diversity in the scope and style of practice across practice models. Compared to established physicians, new graduates (in practice less than 10 years) work more weekly hours (more patient care, and paperwork in particular). However, we found no difference between new and established physicians in the odds of providing any or full-time community-based primary care. Conclusions: Despite a lack of formalized structural reform in British Columbia’s primary care system, most physicians are finding alternative ways to model their practice and shifting away from work at single-location, community-based clinics. This shift challenges assumptions that are relied on for workplace planning that is intended to ensure adequate access to longitudinal, community-based family medicine.
Pratiques déclarées d’enseignement et d’évaluation de l’oral d’enseignants du 3e cycle du primaire : comparaison de résultats de recherches au Québec et en Espagne
Creators: name: RICS, Revue
Publisher: name: figshare
Year: 2022
Subjects: Education

description: La littératie inclut l’ensemble des compétences qui permettent aux individus non seulement de vivre en société, mais également d’y contribuer. La compétence à communiquer oralement est au cœur de la littératie et occupe une place importante dès le début de la scolarité. En rehaussant les habiletés des élèves à l’oral, cela favorise le développement des compétences en littératie des adultes de demain. Par conséquent, il est essentiel d’enseigner et d’évaluer l’oral dès l’école primaire, mais qu’en est-il des perceptions et des pratiques des enseignants? Ce texte propose une mise en commun de deux recherches menées respectivement au Québec et en Espagne à partir d’un même questionnaire d’enquête portant sur les pratiques d’enseignement et d’évaluation de l’oral en français et en espagnol langues premières. Les perceptions et les pratiques d’enseignants de ces deux communautés linguistiques ainsi que les points de convergence et de divergence sont présentés.
Homonationalism on TV?: A Critical Discourse Analysis of Queer and Trans* Youth Representations on Mainstream Teen Television Shows
Creators: name: Campisi, Caitlin
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2013
Subjects: television
youth
sexuality
gender identity
critical discourse analysis
homonormativity
queer youth in popular culture
trans youth in popular culture
homonationalism
transnormativity

description: As representations of queer and trans* youth become increasingly numerous and diverse in mainstream teen television, this thesis explores the social processes of normalization present in the elaboration of queer and trans* youth characters in the 2010-2011 seasons of Pretty Little Liars and Degrassi. The methodology involves a critical discourse analysis of racialized queer youth identities on Pretty Little Liars and white trans* youth identities on Degrassi, complemented by an analysis of their political economy of production and their circulation of discourse surrounding sexuality and gender identity in online youth communities. Drawing upon literature on homonormativity and emerging literature on transnormativity in mainstream media texts, this thesis illustrates that despite their amenability to dominant social power structures, contemporary televisual representations of queer and trans* youth identities achieve meaningful cultural work through the creation of new societal frameworks for youth to engage with non-normative sexualities and gender identities.
Non-binary Distributed Arithmetic Coding
Creators: name: Ziyang, Wang
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2015
Subjects: DAC

description: Distributed source coding (DSC) is a fundamental concept in information theory. It refers to distributed compression of correlated but geographically separated sources. With the development of wireless sensor networks, DSC has attracted great research interest in the recent years [26]. Although many channel code based DSC schemes have been developed (e.g., those based on turbo codes [11]and LDPC codes [20]), this thesis focuses on the arithmetic coding based approaches, namely, Distributed Arithmetic Coding (DAC) due to its simplicity in encoding [8]. To date, most of the DAC approaches that have been proposed deal with binary sources and can not handle non-binary cases. Little research has been done to extend DAC for non-binary sources. This work aims at developing efficient DAC techniques for the compression of non-binary sources. The key idea of DAC is representing the source symbols by overlapping intervals, as opposed to the case of conventional arithmetic coding where the intervals representing the symbols do not overlap. However the design of the overlapping intervals has been completely of heuristic nature to date. As such, the first part of this work is a thorough study of various interval-overlapping rules in binary DAC so as to understand how these rules impact the performance of DAC. The insight acquired in this study is used in the second part of this work, where two DAC algorithms are proposed to compress non-binary non-uniform sources. The first algorithm applies a designed overlap structure in DAC process, while the second converts a non-binary sequence into a binary sequence by Huffman Coding and encoding the result in binary DAC. Simulation studies are performed to demonstrate the efficiencies of the two proposed algorithms in a variety of source parameter settings.
To the Heart of the Continent: Canada and the Negotiation of the St. Lawrence Seaway and Power Project, 1921-1954
Creators: name: Macfarlane, Daniel W. D.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2010
Subjects: St. Lawrence
Canada
United States
history
Seaway
Canadian-American Relations
environmental history
environmental diplomacy
foreign policy
international relations
St. Laurent
water history

description: The St. Lawrence Seaway and Power Project, built cooperatively between 1954 and 1959 by Canada and the United States, is the largest navigable inland waterway in the world and the largest borderlands project ever undertaken jointly by two countries. This thesis combines diplomatic, political, and environmental history to chart the course of domestic and international negotiations, particularly in the 1945-1954 period, that resulted in the bilateral 1954 agreement to build the seaway. The focus is on the Canadian federal government and to a lesser extent the U.S. federal government, as well as involved state and provincial governments and their public power utilities. These negotiations are extremely revealing in terms of the history of Canadian-American relations, and this thesis also examines issues connected to North American attitudes toward water resources, state-building, high modernism, and technology in the early Cold War period. After a number of failed attempts at a cooperative waterway, in the late 1940s the Liberal government of Louis St. Laurent began to explore the possibility of an all-Canadian seaway, and backed by widespread public support, had adopted this as policy by 1952. The drive for an all-Canadian seaway stemmed from various forms of nationalism which framed the St. Lawrence as an exclusively “Canadian” resource that was intimately tied to Canadian identity. However, the Truman administration and different American interests deemed a unilateral Canadian waterway to be an economic and national security threat to the United States, and delayed the requisite power licenses needed for Canada to undertake the transborder St. Lawrence project. Canada partly contributed to this situation by repeatedly making vague offers to leave the door open for American involvement in the hopes that this would expedite the hydro aspect of the project. The Eisenhower administration also stalled Ottawa’s efforts to “go it alone” until American participation was finally sanctioned by Congress in 1954 and the requisite licenses were granted. The St. Laurent government then reluctantly acquiesced to the American desire for a joint endeavour in order to maintain harmonious Canada-U.S. relations, although Canada did extract key concessions from Washington about the shape and placement of the project.
A Tale of Two Latin American Countries Within the Same Region and a Very Different Democratic Rule of Law Experience
Creators: name: Bardallo Bandera, Joaquín
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2014
Subjects: Democratic Rule of Law
Civil-Military Relations
Democracy
Uruguay
Mexico
Clientelism
Historical Institutionalism
Process-Tracing

description: The following thesis analyzes why is the democratic rule of law stronger in Uruguay than in Mexico? This work focuses on the state of the democratic rule of law in Mexico and Uruguay. The premise of this thesis is that there is a gap in the literature on causes that have historically made Uruguay the country with the strongest democratic rule of law in Latin America and Mexico one with the weakest democratic rule of law. Historical institutionalism is used to see how the evolution of the sequencing of political regimes as well as the evolution of civil-military relations in the two countries may explain the divergent outcomes. Emphasizing path-dependency, this analysis is conducted using a methodology of process-tracing. This research serves to put forward propositions in the form of a testable hypothesis on the causes that have led Mexico and Uruguay down different paths when it comes to the democratic rule of law. It also serves to fill a gap in the literature as cross-national differences on rule of law in Latin America have not been sufficiently well-explained.
Geotechnical Behaviour of Frozen Mine Backfills
Creators: name: Han, Fa Sen
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2011
Subjects: frozen mine backfill
cemented paste backfill
frozen tailings backfill
frozen cemented paste backfill
uniaxial compressive strength
geotechnical properties

description: This thesis presents the results of an investigation of factors which influence the geotechnical properties of frozen mine backfill (FMB). FMB has extensive application potential for mining in permafrost areas. The uniaxial compressive strength (UCS) of hardened backfill is often used to evaluate mine backfill stability. However, the deformation behaviour and stiffness of the FMB are also key design properties of interest. In this thesis, uniaxial compressive tests were conducted on FTB and FCPB samples. Information about the geotechnical properties of FMB is obtained. The effects of FMB mix components and vertical compression pressure on the geotechnical properties of FMB are discussed and summarized. An optimum total water content of 25%-35% is found in which the strength and the modulus of elasticity of the FTB are 1.4-3.2 MPa and 35-58 MPa, respectively. It is observed that a small amount (3-6%) of cement can significantly change the geotechnical properties of FTB.
Multi-retransmission Route Discovery Schemes for Ad Hoc Wireless Network with a Realistic Physical Layer
Creators: name: Jin, Xiangyang
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2011
Subjects: Route Discovery
Wireless Network
Ad Hoc Networks

description: During the route discovery process, each node receiving the route request packet (RReq) will retransmit it exactly once. A distant neighbor may accidentally receive/loose the only RReq and use it to announce a new route, although that link is inferior/superior for route reply packets (RRep) or actual message routing. Overall, the constructed route may be far from the optimal. All existing route discovery schemes (including DSR/AODV) apply retransmission during route discovery exactly once (1R). Based on a realistic physical layer model, we propose two new route discovery schemes: n-retransmission (nR, retransmitting exactly n times) and n-retransmission c-reception (ncRR), retransmitting until we either reach a total of n own retransmissions or c copies from neighbors are heard. We compare our two new scheme with the traditional one, under otherwise identical conditions (same metric, same packet reception probability on each link) and the same choices about possibly retransmitting again upon discovering a better route (R+) or discarding it (R1), generating route reply packet for every received RRep (B*), or for first and better discovered routes only (B2), and retransmitting RRep exactly once (A1), up to a maximum of three times (A3), or optimally u times decided by link quality (Au). Experimental results show that the proposed ncRR scheme (for n=2 and c=3 or c=4) achieves the best tradeoff between quality of route, success rate and message overhead in the route discovery process, followed by the nR scheme, and both of them are superior to the existing traditional schemes.
Journeying to the Father: Researching Faith and Identity in a Contemporary Catholic Youth Movement in Canada
Creators: name: Gareau, Paul
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2016
Subjects: subject: Identity
subject: Youth
subject: Identity Politics
subject: New Evangelization
subject: Catholicism
subject: Christian Summer Camps
subject: Secularism
subject: Religious Studies
subject: Sociology
subject: FOS: Sociology
subject: Political Philosophy

description: The New Evangelization (NE) is a recent development in the Catholic Church. It seeks to preserve, restore, and re-invigorate Catholic religious identity in the face of what it perceives to be a dominance of secular values. This proselytization program instigates personal religiosity among adherents in the hopes of forming an evangelical Catholic identity. However, little is known of the processes and discourses of Catholic evangelization, especially among young people in Canada. This thesis responds to the main question: How are young people engaging and interpreting evangelical modes of religious and socio-political identity, and integrating or negotiating this worldview within a pluralist Canadian society? This research, therefore, focuses on an annual summer Catholic youth conference called Journey to the Father as a case study that sheds light on the dissemination of Catholic perspectives, the development of a personal and charismatic religious experience, and the instigation of an evangelical impetus in young Catholic participants. Using participant observation and semi-structured interviews with both the adult organizers (ages 18 and older) and young participants (ages 13–18) in Journey to the Father, this research examines the processes of identity formation through affective and experiential religiosity, and the formulation of a minority identity politics among young Catholics within a diverse Canada. It also takes into account the correlation between an evangelical Catholic worldview and young people, spelling out different reflections on religion and society, experience and agency. This research emphasizes how young people negotiate (i.e. appropriate or negate) evangelical Catholic values and charismatic religious experience when forming their social, political, and religious identities, in order to gain an understanding of their socio-political position within a diverse Canadian society.
Innovation und Nachhaltigkeit in der Weiterbildung
Creators: name: Clausen, Jens
name: Fichter, Klaus
name: Griese, Jan-Niklas
Publisher: name: Umweltbundesamt
Year: 2021
Subjects: subject: Nachhaltigkeit
subject: Fortbildung
subject: Umweltinnovationen
subject: Weiterbildung
subject: Wirtschaft | Konsum
subject: Nachhaltigkeit | Strategien | Internationales

description: Das Hervorbringen von Innovationen erfordert vielfältige Kompetenzen und Qualifikationen, für die insbesondere die berufsbegleitende Weiterbildung von hoher Bedeutung ist. Die Studie fokussiert daher auf das lebenslange Lernen im Rahmen berufsbegleitender Studiengänge und beruflicher Weiterbildung. Die Analyse zeigt, dass der vergleichsweise kleine Teilnehmendenkreis an Weiterbildungen nur in sehr seltenen Fällen mit einer expliziten Verbindung der Themen Innovation und Nachhaltigkeit konfrontiert wird. Dies markiert ein klares Defizit des deutschen Weiterbildungssystems und eine klare Schwäche mit Blick auf die deutsche Umweltinnovationspolitik. Quelle: Forschungsbericht
description: Creating innovations requires a wide range of qualifications, for which in-service training in particular is of great importance. The study therefore focuses on lifelong learning in the context of degree courses and vocational professional training. The analysis shows that a comparatively small group of participants in vocational education is very rarely confronted with an explicit connection between the topics of innovation and sustainability. This marks a clear deficit of the German continuing education system and a clear weakness with regard to German environmental innovation policy. Quelle: Forschungsbericht
description: Das Hervorbringen von Innovationen erfordert vielfältige Kompetenzen und Qualifikationen, für die insbesondere die berufsbegleitende Weiterbildung von hoher Bedeutung ist. Gerade bei Umweltinnovationen sind Kompetenzen gefragt, die Innovationsaspekte und Nachhaltigkeitsaspekte explizit verknüpfen. Die Studie untersucht daher, inwieweit in berufsbegleitenden Studiengängen und Weiterbildungsangeboten im Bereich Innovationsmanagement Umwelt- und Nachhaltigkeitsaspekte explizit aufgegriffen werden und inwieweit umgekehrt die Angebote im Bereich Nachhaltigkeitsmanagement explizit Innovationsaspekte berücksichtigen. Die Schnittmenge erweist sich als extrem gering - ein klarer Schwachpunkt für eine nachhaltige Entwicklung.
Le choix d'un école secondaire francophone : étude qualitative réalisée auprès de mères d'origines canadienne et djiboutienne/somalienne
Creators: name: Audet, Alexandre
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2013
Subjects: choix scolaire
franco-ontarien
mères canadiennes
mères djiboutiennes/somaliennes
écoles franco-ontariennes
Bourdieu
étude qualitative
entrevues semi-dirigées
sociologie de l'éducation
Ontario français
Ottawa

description: La réforme ontarienne des politiques éducatives de la fin des années 1990 a introduit une certaine économie de marché dans le système d’éducation, laquelle a contribué à accroître la concurrence entre les écoles pour le recrutement du plus grand nombre d’élèves. Au même moment, l’Ontario accueillait un grand nombre d’immigrants francophones, dont la plupart provenaient du continent africain. Dans ce contexte, quels facteurs influencent les mères francophones (d’origines djiboutienne/somalienne et canadienne) quand elles choisissent une école secondaire de langue française pour leur enfant. Plus précisément, il s’agit de voir s’il y a une tendance vers un choix positif ou s’il y a évitement de certaines écoles dans lesquelles de plus grandes proportions d’élèves issus de l’immigration seraient présent. En d’autres mots nous voulons voir s’il y a une ghettoïsation de certaines écoles de langue française en Ontario. En nous appuyant sur les outils d’analyse sociologique de Pierre Bourdieu (le champ, le capital et l’habitus), nous avons étudié la question selon trois dimensions : le statut socio-économique des familles, les programmes offerts par les écoles et l’environnement scolaire. Les données ont été recueillies lors d’entrevues semi-dirigées avec les mères. L’analyse de nos données révèle, dans un premier temps, que la présence des groupes ethniques et culturels divers au sein des écoles semble apporter une plus-value à ces établissements. De plus, nous n’avons pas relevé de différences considérables quant aux facteurs qui influencent les mères de notre échantillon (d’origines canadienne et immigrante) lors du choix scolaire. Cependant, la situation de double minorité (raciale et linguistique) des mères immigrantes fait en sorte que le choix de celles-ci se fait dans un contexte socio-économique différent, donc elles sont davantage motivées à choisir un programme et un environnement scolaire pour que leurs enfants puissent bâtir sur ce que leurs parents ont réussi à accumuler jusqu’à maintenant.
Reducing Injuries in Soccer (Football): an Umbrella Review of Best Evidence Across the Epidemiological Framework for Prevention
Creators: name: Owoeye, Oluwatoyosi B A
name: VanderWey, Mitchell J
name: Pike, Ian, 1958-
Publisher: name: Springer International Publishing
Year: 2020

description: Soccer is the most popular sport in the world. Expectedly, the incidence of soccer-related injuries is high and these injuries exert a significant burden on individuals and families, including health and financial burdens, and on the socioeconomic and healthcare systems. Using established injury prevention frameworks, we present a concise synthesis of the most recent scientific evidence regarding injury rates, characteristics, mechanisms, risk and protective factors, interventions for prevention, and implementation of interventions in soccer. In this umbrella review, we elucidate the most recent available evidence gleaned primarily from systematic reviews and meta-analyses. Further, we express the exigent need to move current soccer injury prevention research evidence into action for improved player outcomes and widespread impact through increased attention to dissemination and implementation research. Additionally, we highlight the importance of an enabling context and effective implementation strategies for the successful integration of evidence-based injury prevention programs into real-world soccer settings. This narrative umbrella review provides guidance to inform future research, practice, and policy towards reducing injuries among soccer players.
Large and opposite changes of the third-order optical nonlinearities of chalcogenide glasses by femtosecond and continuous-wave laser irradiation
Creators: name: Zhang, Qiming
name: Liu, Wei
name: Liu, Liying
name: Xu, Lei
name: Xu, Yinsheng
name: Chen, Guorong
Publisher: name: Swinburne
Year: 2024

description: We report that the nonlinear refractive index (n2) of As2S3 glass can be enhanced after irradiation by a femtosecond laser but suppressed after irradiation by a continuous-wave (cw) laser, although both the femtosecond laser and cw laser induce photodarkening in the glass. Photodarkening by the femtosecond laser increases n2 by as much as 50%, while irradiation by a subbandgap cw laser decreases n2 by as much as 60% of its original value. The results provide a way to manipulate the third-order optical nonlinearity of this photonic glass. Mechanisms of the optical nonlinearity changes are discussed.
Rewriting and evaluating XPath queries using views
Creators: name: Zhou, Rui
Publisher: name: Swinburne
Year: 2024

description: Rewriting and evaluating queries using views, also known as answering queries using views, is to utilize previously defined and materialized views to evaluate queries in order to save the cost of accessing large real database. It is a classic problem, and appears in many applications, such as query optimization, data integration, data warehouse and query caching. With the prevalence of XML technologies, rewriting XML queries using XML views has caught the attention of both researchers and system designers, and is believed to be a promising technique in web and database applications. Since XPath serves as the core sub-language of the major XML query languages, such as XQuery and XSLT, it is of immense value to study how to rewrite and evaluate XPath queries using XPath views. In this thesis, contained rewriting for XPath queries using XPath views is studied. Contained rewriting is proposed to provide best effort to answer a user’s query when equivalent rewriting does not exit. Given a query and a view, there may be an exponential number of contained rewritings. Some of them are redundant because the query answers produced by these redundant contained rewritings can be covered by other contained rewritings. Obviously, it is unnecessary to evaluate redundant contained rewritings on materialized views. We investigate the problem and propose a series of methods to discover all irredundant contained rewritings, and we show the correctness of the proposed methods. Furthermore, we study the evaluation of a group of contained rewritings on a given materialized view. The problem is transformed into evaluating component patterns, and four pruning rules and three heuristic rules are developed to speed up the evaluation dramatically. When a schema is available, we discuss how to utilize schema information for rewriting a query using a view, because a query, not answerable using a view in general, may be answerable using the view if the query and the view are complied with schema constraints. Finally, a set of filtering techniques are given to select promising views to answer users' query. Indexes and three algorithms are developed to quickly identify whether a view should be used or not.
WAR_WITNESS Research Guide: Researching the British East India Company Using Soldiers' Letters Published in British Newspapers 1780-1857
Creators: name: Wilkinson, Callie
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Military history
subject: Print history
subject: Newspapers
subject: East India Company
subject: Britain
subject: India
subject: History
subject: Modern history

description: This research guide is designed to assist in the identification and analysis of soldiers’ letters in British newspapers. The author is a Marie Skłodowska-Curie Postdoctoral Fellow at LMU Munich. These findings are based on a two-year research project on the nineteenth-century army serving in India.
Supplementary document for High-speed object detection with a single-photon time-of-flight image sensor - 5409762.pdf
Creators: name: Mora, German
name: Turpin, Alex
name: Ruget, Alice
name: Halimi, Abderrahim
name: Henderson, Robert
name: Leach, Jonathan
name: Gyongy, Istvan
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: Supplement Document (Overleaf project) for Manuscript.