cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Automatic sleep stage identification: difficulties and possible solutions
Creators: name: Sukhorukova, Nadezda
name: Stranieri, A.
name: Ofoghi, B.
name: Vamplew, P.
name: Saleem, M.
name: Ma, L.
name: Ugon, A.
name: Ugon, J.
name: Muecke, N.
name: Amiel, H.
name: Philippe, C.
name: Bani-Mustafa, A.
name: Huda, S.
name: Bertoli, M.
name: Levy, P.
name: Ganascia, J.-G.
Publisher: name: Swinburne
Year: 2024

description: The diagnosis of many sleep disorders is a labour intensive task that involves the specialised interpretation of numerous signals including brain wave, breath and heart rate captured in overnight polysomnogram sessions. The automation of diagnoses is challenging for data mining algorithms because the data sets are extremely large and noisy, the signals are complex and specialist's analyses vary. This work reports on the adaptation of approaches from four fields; neural networks, mathematical optimisation, financial forecasting and frequency domain analysis to the problem of automatically determing a patient's stage of sleep. Results, though preliminary, are promising and indicate that combined approaches may prove more fruitful than the reliance on a approach.
A longitudinal study on the impact of maternal depression on child adjustment.
Creators: name: Kallos-Lilly, A. Veronica.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1997
Subjects: subject: Psychology, Developmental.

description: A community sample of depressed women, their spouses, and their 8 to 12 year old children participated in a 6 month longitudinal study. Aspects of their mothers' depression, their marital relationship, and their parenting style were investigated in terms of their association with child adjustment. Fathers' marital relationship and their parenting style were also assessed to examine their association with child adjustment. Severity, duration, and chronicity of the mothers' depression were assessed at two time points. Similarly academic and nonacademic self-concept, mathematics and verbal achievement, and internalizing and externalizing symptoms of the children were assessed at both time points. Marital functioning (i.e., warmth, intimacy, and control) and parenting style (i.e., expressiveness, cohesion, and conflict) were assessed at Time 1 only for both mothers and fathers. Using data from Time 1, children were classified into adjustment groups (well or poorly adjusted). They were considered well adjusted if they functioned at or above normal limits on at least two out of the three domains investigated. Results indicated that less than 30% of the children of depressed mothers were classified as poorly adjusted. Analyses revealed that both chronicity and severity of maternal depression distinguished the child adjustment groups at Time 1. Child adjustment groups did not differ on any of the marital or parenting variables for either mothers or fathers. Longitudinal analyses indicated that mother-child cohesion at Time 1 predicted a decline in children's self-concept from Time 1 to Time 2. Specifically, the closer the relationship with the depressed mother at Time 1, the more negative the child's combined academic and nonacademic self-concept was at Time 2. These results are discussed in terms of attachment theory. Additionally, the merits of longitudinal research investigating variability within the families of depressed mothers are highlighted.
title: Invaginación intestinal en adultos como primera manifestación de enfermedad celiaca
Creators: name: Lombardo, Sagrario
Publisher: name: Sociedad Española de Radiología Médica
Year: 2012
Subjects: subject: Small bowel
subject: Abdomen

description: Objetivos
Material y método
Resultados
Conclusiones
description: Objetivos:
La enfermedad celiaca es una alteración inmunológica del tracto gastrointestinal que se produce con frecuencia.
Se define como una intolerancia permanente de las asas de intestino delgado al gluten.
Normalmente se diagnostica en la infancia.
En...
title: Validez de la Resonancia Magnética en la predicción de la quimiosensibilidad del cáncer de mama subtipo molecular Luminal: Subgrupos A y B
Creators: name: Esteban Cuesta, Helena
Publisher: name: Sociedad Española de Radiología Médica
Year: 2012
Subjects: subject: Breast
subject: MR

description: Objetivos
Material y método
Resultados
Conclusiones
description: Objetivos:
1.
Calcular laeficaciade la RM para evaluar la respuesta a la quimioterapia primaria(QTP) en el cáncer de mama luminal subgrupos A(CMLA) y B(CMLB). 2.
Analizar las causas de falsos positivos y negativos en ambos...
Vieillir en marge, les réseaux informels et formels des lesbiennes âgées.
Creators: name: Veilleux, Denise.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1998
Subjects: subject: Gerontology.

description: La presente these examine l'impact de la stigmatisation sociate du lesbianisme sur les reseaux informels et formels au moment de la vieillesse. Pour ce faire, l'auteure analyse les entrevues dirigees menees avec 19 lesbiennes agees de 50 a 67 ans dans l'Outaouais quebecois et ontarien. Si les relations avec la famille immediate et les enfants sont en general cordiales, elles restent plutot distantes en raison notamment du rejet et de l'occultation de l'identite lesbienne. La crainte des sanctions mene aussi les lesbiennes interviewees a eviter de socialiser avec leurs collegues de travail. Leurs reseaux informels se composent donc surtout d'autres lesbiennes qu'elles frequentent generalement dans leurs foyers respectifs. Leurs contacts avec les reseaux formels, c'est-a-dire les groupes officiels et les diverses activites de la communaute lesbienne et gaie, sont episodiques. L'auteure conclut que l'absence des lesbiennes agees des elements qui composent la vie lesbienne publique et collective pourrait nuire a la realisation de leur projet d'une maison de retraite pour leur vieillesse.
A most favoured nation: The Bible in late nineteenth-century Canadian public life.
Creators: name: Jones, Preston Lee.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1999
Subjects: subject: Religion, General.

description: While it is generally acknowledged that the Bible's influence in Canadian history, as in all Western societies, has been significant, this thesis is the first extended study of the Bible's place in Canadian public life. Drawing on a wide range of printed primary sources, this thesis examines the way the Bible and biblical rhetoric were employed by public figures in Canada in the late nineteenth century. The majority of the figures whose rhetoric and writing is studied here were nationalists interested in defining their nation. This study's most basic conclusion is that the Bible did indeed inform the way English- and French-speaking Canadians spoke about their country in the late nineteenth century. A second conclusion is that Protestant Canadians who perceived French Quebec as a Bible-free zone were mistaken. French Canadian Catholics certainly did not read the Bible independently the way Protestants did, but the Scriptures were available even to illiterate French Canadians---via paintings, sculptures, iconography, and sermons. French Canada's "providential missions"---the belief that the French Canadians were a divinely chosen people in the New World---was frequently expressed in explicitly biblical terms. Protestants who thought Quebec's French-speaking Catholics were totally ignorant of the Scriptures were wrong. A third conclusion of this study is that, by virtue of their eagerness to attach biblical language to mundane projects, Canada's Protestants contributed to the creation of an intellectual atmosphere in which the Scriptures could be handled casually. Protestant biblicism could not but often render the Scriptures trivial. Finally, this thesis's fourth conclusion is that, according to the terms current in late nineteenth-century Canada, Quebec's catholic culture appears to have been somewhat more "biblical," if less biblicistic, than English-speaking Canadian culture.
Performing gender through contested waters : women+ water activists in Chilean hydrosocial struggles
Creators: name: Arriagada, Evelyn
Publisher: name: University of British Columbia
Year: 2025

description: A vast literature – cross-cutting fields such as Environmental Sociology, Environmental Justice, and Political Ecology – explains women’s differentiated participation in water/environmental-related collective actions. Many common explanations use binary (male/female) socio-demographic variables and/or focus on traditional gender roles (e.g., as mothers, or as caretakers) as the primary explanatory factors. Although contemporary feminist scholars propose that gender is a fluid category that interacts with other axes of social difference to (also) co-produce changing environments, few studies have tried to understand how activism redefines gendered (intersectional and expanded) identities/subjectivities and also critically refashions meanings of/relationships with water and territories. In critical dialogue with those discussions, this research presents the results of my collaborative work with/within the Asamblea de Mujeres Insulares por las Aguas (AMIPA) – a women’s organization in defense of waters in the Chiloe archipelago (southern Chile). I focus on the Chilean case, aiming to understand women+’s engagements as a critical factor mediating the relationship between gender, power, and natures. I particularly ask: how, through activism, do AMIPA members reproduce/transform their gendered+ subjectivities, their connections with waters/territories/natures, and broader (water-related) contentious politics at different scales? Theoretically, I draw upon a Feminist Political Ecology (FPE) approach, emphasizing recent theoretical and praxis-oriented contributions from Latin America, in dialogue with social movements theory (SMT), broader political ecologies of water (POW), and other perspectives. By employing multi-sited ethnography, biographical interviews, activist-research and other methods during a three-year process of accompanying AMIPA, I analyze women+’s multiple experiences of (water) activism and the trajectory of AMIPA to particularly understand how they are challenging, re-signifying or transforming: 1) their senses of the self (Chapter 2); 2) the relationship between complex senses of ‘we’ and situated water activism (Chapter 3); 3) the ways of relating with and re-imagining (extended and embodied) hydrosocial territories and more-than-human watery beings (Chapter 4). These results highlight AMIPA’s situated feminist praxis and our collaborative work to offer a more nuanced approach to gendered+ water/environmental activism and ongoing discussions on the so-called new water justice movements (NWJMs), while enriching FPE and ally approaches on the relationship between shifting/expanded subjectivities, changing natures and co-production of knowledge.
title: Predictors of survival in critically ill patients with acute respiratory distress syndrome (ARDS)
title: an observational study
titleType: Subtitle
Creators: name: Balzer, Felix
name: Menk, Mario
name: Ziegler, Jannis
name: Pille, Christian
name: Wernecke, Klaus-Dieter
name: Spies, Claudia
name: Schmidt, Maren
name: Weber-Carstens, Steffen
name: Deja, Maria
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2016
Subjects: subject: Acute respiratory distress syndrome
subject: Pao2/FIO2 ratio
subject: Oxygenation index
subject: Classification
subject: Risk stratification
subject: Outcome
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit

description: Background Currently there is no ARDS definition or classification system that allows optimal prediction of mortality in ARDS patients. This study aimed to examine the predictive values of the AECC and Berlin definitions, as well as clinical and respiratory parameters obtained at onset of ARDS and in the course of the first seven consecutive days. Methods The observational study was conducted at a 14-bed intensive care unit specialized on treatment of ARDS. Predictive validity of the AECC and Berlin definitions as well as PaO2/FiO2 and FiO2/PaO2*Pmean (oxygenation index) on mortality of ARDS patients was assessed and statistically compared. Results Four hundred forty two critically-ill patients admitted for ARDS were analysed. Multivariate Cox regression indicated that the oxygenation index was the most accurate parameter for mortality prediction. The third day after ARDS criteria were met at our hospital was found to represent the best compromise between earliness and accuracy of prognosis of mortality regarding the time of assessment. An oxygenation index of 15 or greater was associated with higher mortality, longer length of stay in ICU and hospital and longer duration of mechanical ventilation. In addition, non-survivors had a significantly longer length of stay and duration of mechanical ventilation in referring hospitals before admitted to the national reference centre than survivors. Conclusions The oxygenation index is suggested to be the most suitable parameter to predict mortality in ARDS, preferably assessed on day 3 after admission to a specialized centre. Patients might benefit when transferred to specialized ICU centres as soon as possible for further treatment.
Level crossing rate and average fade duration for the Beaulieu-Xie fading model
Creators: name: Olutayo, Adebola
name: Ma, Hui
name: Cheng, Julian
name: Holzman, Jonathan F.
Publisher: name: IEEE Wireless Communications Letters
Year: 2018

description: Level crossing rate (LCR) and average fade duration (AFD) of a new (Beaulieu-Xie) fading model are analyzed. The characteristic function method is used to derive the LCR for a diversity scheme using maximal ratio combining. The LCR and AFD of the Beaulieu-Xie fading model show improvement beyond the performance levels of the Ricean and Nakagami-m fading models.
The electric field gradient of octahedral iron(2+) in layer silicates: Theory with applications to Moessbauer spectroscopy.
Creators: name: Evans, R. James.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2001
Subjects: subject: Physics, Condensed Matter.

description: New electronic structure calculations of the electric field gradient (EFG) at octahedral Fe2+ sites in layer silicates are discussed. These calculations were done with the aim of providing a link between quadrupole splitting distributions from Mossbauer spectroscopy and the physical distributions of local environments within the material. Various distortions were applied to FeO610- and Fe(OH)6 4- clusters to simulate different local environments and the corresponding EFG's calculated. The electronic structure calculations were performed with the General Atomic and Molecular Electronic Structure System (GAMESS) and a self-consistent-charge-Xalpha method. An analytic model of the EFG using a classical electrostatic point charge model and crystal field theory is used to complement the electronic structure calculations. There is good qualitative agreement between the electronic structure calculations, the analytic model, and with experimental quadrupole splittings in micas. A geometric model of the octahedral sheet in a layer silicate is described, based on isometric flattening and counter-rotation as the main distortions, which can have one, two, or three unique sites. EFG distributions are then calculated using a variety of cases based on the geometric model and the calculated EFG vs. distortion curves. The most realistic distribution results from a case that assumes two unique site-types in a ratio of 2:1, with the height of each site and the inter-cation distance held constant throughout the sheet and the Fe--O bond length of one site-type allowed to vary with a Gaussian distribution.
Regulation of hippocampal synaptic plasticity thresholds and changes in exploratory and learning behavior in dominant negative NPR-B mutant rats
Creators: name: Barmashenko, Gleb
name: Buttgereit, Jens
name: Herring, Neil
name: Bader, Michael
name: Özcelik, Cemil
name: Manahan-Vaughan, Denise
name: Braunewell, Karl H.
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2014
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit

description: The second messenger cyclic GMP affects synaptic transmission and modulates synaptic plasticity and certain types of learning and memory processes. The impact of the natriuretic peptide receptor B (NPR-B) and its ligand C-type natriuretic peptide (CNP), one of several cGMP producing signaling systems, on hippocampal synaptic plasticity and learning is, however, less well understood. We have previously shown that the NPR-B ligand CNP increases the magnitude of long-term depression (LTD) in hippocampal area CA1, while reducing the induction of long-term potentiation (LTP). We have extended this line of research to show that bidirectional plasticity is affected in the opposite way in rats expressing a dominant-negative mutant of NPR-B (NSE-NPR- BΔKC) lacking the intracellular guanylyl cyclase domain under control of a promoter for neuron-specific enolase. The brain cells of these transgenic rats express functional dimers of the NPR-B receptor containing the dominant- negative NPR-BΔKC mutant, and therefore show decreased CNP-stimulated cGMP- production in brain membranes. The NPR-B transgenic rats display enhanced LTP but reduced LTD in hippocampal slices. When the frequency-dependence of synaptic modification to afferent stimulation in the range of 1–100 Hz was assessed in transgenic rats, the threshold for both, LTP and LTD induction, was shifted to lower frequencies. In parallel, NPR-BΔKC rats exhibited an enhancement in exploratory and learning behavior. These results indicate that bidirectional plasticity and learning and memory mechanism are affected in transgenic rats expressing a dominant-negative mutant of NPR-B. Our data substantiate the hypothesis that NPR-B-dependent cGMP signaling has a modulatory role for synaptic information storage and learning.
Real-time full-field range-sensing for three-dimensional surface-shape measurement
Creators: name: Jia, Peirong
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2007
Subjects: subject: Engineering, Mechanical.

description: Three-dimensional (3-D) surface-geometry measurement using structured light is commonly used for digital modeling of an object or environment when the geometry is unknown. Digital fringe projection with phase-shifting has become an increasingly common measurement method as it is a full-field method to improve acquisition speed over point-by-point and line-by-line methods, and it encodes all lines in the pattern to reduce the ambiguity problem that occurs with multiple-line projection methods. However, fringe-projection phase-shifting techniques are still limited in the speed of measurement, partly due to the use of projected light patterns that require complex computation, or that require several steps of repeated measurements with several images in order to reconstruct the 3-D object surface. This doctoral dissertation addresses the development of new methods for real-time full-field range sensing by fringe-projection phase-shifting techniques, to use more efficient algorithms. It also addresses the design, calibration, and measurement-accuracy testing of a new full-field real-time range-sensing system based on the developed methods. A novel 3-D shape measurement technique, called triangular-pattern phase-shifting profilometry, is developed in this research. The proposed method utilizes triangular gray-level-coded fringe patterns and newly developed intensity-ratio generation algorithms, essential to reconstruct a 3-D object surface. The minimum number of measurements required to reconstruct an unknown 3-D object is two, which is less than the minimum number of measurements required for the traditional sinusoidal-pattern and trapezoidal-pattern phase-shifting methods. Compared with the sinusoidal-pattern and trapezoidal-pattern phase-shifting methods, the new method involves less processing because of the simple intensity-ratio computation used and because fewer images or measurement steps are required to reconstruct the 3-D object. Extension of the method by increasing the number of phase-shifting steps was found to increase measurement accuracy. An optimal value of pitch of the projected triangular fringe pattern was found for each extended method. Two error compensation methods, repeated phase-offset and intensity-ratio error compensation, are proposed to reduce the measurement error, mainly caused by fringe projection non-linearity and image defocus. Error reductions of 24.0% and 28.5% were achieved, respectively. An off-line 3-D shape measurement system and a real-time 3-D shape measurement system have been developed with the proposed triangular-pattern phase-shifting method.
"Postcolonializing" Deleuze: Transnationalism and horizontal thought in the British South Asian diaspora
Creators: name: Pervez, Summer
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2007
Subjects: subject: Literature, Asian.
subject: Literature, English.

description: This dissertation is about the need to re-examine South Asian British literature and film from the perspective of "horizontal" thought. Writers and filmmakers of the British Asian diaspora offer a new model of thinking about identity, one that is "Deleuzean" in nature. Artists such as Salman Rushdie, Hanif Kureishi, Meera Syal, Monica Ali, Suniti Namjoshi, and Gurinder Chadha reveal a concern with showing both celebrations of and resistance to pluralism and possibility in a transnational world. Furthermore, their work also illustrates the need and desire to create a new cultural poetics in Britain, one that is more inclusive of diaspora literature and film. When applied to Asian British texts, Deleuzean philosophy reveals the complex intersections of migrancy, ethnicity, postcoloniality, and (homo)sexuality in the diasporic identities of contemporary South Asian writers, filmmakers, and their characters. In contrast to models of hybrid identity espoused by postcolonial theorists such as Homi Bhabha (vertical thinkers), Gilles Deleuze's model of horizontal thought escapes hierarchism, binarism, and idealism when analyzing transnational, liminal identities as represented in and by the creative work of British Asians. This shift in thought to horizontality is necessary because the literature and film themselves exemplify the following three concerns: (1) the need and quest for plural identities, (2) an examination of the pros and cons of being a migrant/transnational/diasporic figure in England, calling for a consideration of both transnationalism's advantages and its discontents, and (3) and the need to create a unique cultural poetics that operates as a "minor" literature that forms a significant part of the larger grouping of English literature and cinema.
The role of Smn on motorneuronmuscle unit function and on mouse embryonic development
Creators: name: Shafey, Dina
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2008
Subjects: subject: Biology, Neuroscience.
subject: Biology, Cell.

description: Spinal muscular atrophy (SMA) is a devastating childhood neurodegenerative disorder characterized by the degeneration of the alpha-motor neurons in the spinal cord. The loss of these neurons causes proximal, symmetrical limb and trunk muscle weakness that progresses to paralysis and ultimately to death. The disease causing protein in SMA is called survival motor neuron (SMN). SMA is a disease with ranging severity. Disease severity is inversely related to the amount of SMN a patient produces. Thus SMA is a dose-dependent disease. To gain a better understanding of the pathogenesis of SMA and this dose-dependent effect, we have used short interference RNA (siRNA) to selectively reduce SMN expression in cell culture and transgenic mice. Knockdown of SMN protein levels affects properties of cells in culture and mice during embryonic development. We have observed decreased number of nuclear gems (gemini of coiled bodies), reduced proliferation with no increase in cell death, defects in myoblast fusion, and malformed myotubes in SMN depleted C2C12 cells. In parallel, using shRNA vectors, we have developed knockdown mice. These intermediate SMA models, along with existing severe and mild SMA models, were used to assess neuronal development. We investigated the morphology and differentiation of neurosphere-derived neural stem cells (NSCs) generated from the brains of Smn+/- (mild) and Smn -/-;SMN2 (severe) SMA mice. Neurospheres from the severe mice produced NSCs with increased proliferation during growth and differentiation. These cells produced fewer TuJ1-positive neuronal cells, which displayed morphological alterations and had fewer and shorter neurites. In embryos from the severe model, but not the mild model, we observed a significantly altered morphology of cranial nerves IX and X, which appeared to be partially fused. Lastly, to better understand why Smn depletion preferentially affects neurons and muscle, we have used Tandem Affinity Purification to identify Smn complexes from muscle-like and neuronal-like cells. We have identified cell-specific and stage-specific Smn-interacting proteins, which will help us to better understand the diverse functions of Smn. Altogether, our studies have helped identify the possibility of specific roles for SMN in different cell types; the function of these roles is dependent on the dosage of SMN; and this dosage requirement leads to roles for SMN during development and maintenance of neurons and muscle.
Role of fourth transmembrane domain and the second extracellular loop in structure-activity relationships in D1-like dopaminergic receptors
Creators: name: Ogden, Nancy
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2005
Subjects: subject: Health Sciences, Pharmacology.

description: The mammalian D1-like dopaminergic receptors are composed of two subtypes, D1R (or D1A) and D5R (or D1B), which belong to the large family of heptahelical G protein-coupled receptors (GPCRs). D1R and D5R receptors have been characterized pharmacologically via their ability to couple to Galphas and activate AC. Against the high overall amino acid sequence homology of the two D1-like dopaminergic receptors, the divergent primary structure of the extracellular loops, as well as discrete residues within the exofacial end of the transmembrane (TM) regions provide new targets for the assessment of structure-activity relationships represented by D1R and D5R. While residues within the second extracellular loop (EL2) of a number of GPCRs have been the subject of site-directed mutagenesis, a broader understanding of the structure-activity role of EL2 as a whole has yet to be formed. In the present study, chimeric proteins have been engineered to swap the EL2 of D1R and D5R receptors, both with and without the exchange of the divergent amino acid in the exofacial end of TM4. (Abstract shortened by UMI.)
Effect of neighbourhood economic characteristics on the health of individuals
Creators: name: O'Grady, Kathryn
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2005
Subjects: subject: Health Sciences, Public Health.

description: This multilevel study examined the influence of neighbourhood socioeconomic context on individual health as measured by self-rated health status and the Health Utilities Index (HUI) in urban neighbourhoods of the City of Ottawa and the combined cities of Ottawa and Gatineau. The samples were drawn from the respondents to the Canadian Community Health Survey 2000--2001 which included individuals 12 years of age and older. There were 1441 respondents within the 37 Ottawa neighbourhoods and 711 respondents within the 14 Gatineau neighbourhoods. The neighbourhood characteristics were derived from the 2001 Census. In Ottawa there was significant variation in health at the neighbourhood level. In age-adjusted models the neighbourhood low income rate and the neighbourhood low education rate were significantly associated with self-rated health (OR=1.35, 95% CI 1.01--1.81; OR=1.03, 95% CI 1.00--1.06, respectively) and a HUI score <0.973 (OR=1.31, 95% CI 1.10--1.56; OR=1.27, 95% CI 1.07--1.52, respectively). However, adjustment for individual level factors reduced the influence of the neighbourhood level variables such that they were no longer statistically significant. Similar results were found for the analysis of the combined cities. This study suggests that the differences in health between neighbourhoods of Ottawa and Ottawa-Gatineau can be attributed primarily to the compositional impact of the characteristics of individuals within the neighbourhoods.
The alkylation of aromatic amines.
Creators: name: Walsh, Kelly Ann.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1992
Subjects: subject: Chemistry, Organic.

description: N-alkylated anilines can be obtained in moderate yields from aniline and methyl formate in the presence of Rh$\sb6$(CO)$\sb $ and KI after 72 hours at 180-200$\sp\circ$C. Ru$\sb3$(CO)$\sb $ gave similar results to the unpromoted rhodium carbonyl system. Formanilide and N-methylformanilide were also formed in the reaction. The (HCr(CO)$\sb5$) -anion in the form of its PPN$\sp+$ and Et$\sb4$N$\sp+$ salts also catalysed this reaction (under hydrogen) but was selective to the formanilide products. The presence of an electron donating group on the aromatic ring favoured the formation of alkylated products in the presence of bis(triphenylphosphine)iminium (PPN$\sp+$) hydridochromiumpenta-carbonyl. Several possible mechanisms were tested and the nature of the polynuclear catalysts investigated.
Racialization and whiteness in college student leadership education efforts
Creators: name: Irwin, Lauren N.
Publisher: name: University of Iowa
Year: 2025
Subjects: case study
college student leadership
qualitative research
racialization
racialized organizations
whiteness
public abstract

description: The following dissertation comprises two studies that aim to better understand how racialization shapes leadership education practice. As organizations, higher education institutions powerfully shape—and are shaped by—dominant ideologies about race and leadership. Higher education institutions have long purported to develop students as leaders who are equipped to lead social and organizational change and contribute as engaged citizens in diverse democracies. In support of these aims, many colleges rely on leadership education programs (LEPs) to develop students’ leadership skills and abilities.
description: Budgets and resource allocation reflect institutions’ priorities and values. However, there is little scholarship about how LEPs are resourced and how campus contexts and priorities shape LEPs’ access to resources. Further, scholarship about college student leadership education efforts has recently called out leadership education’s failure to center and disrupt power and marginalization, including whiteness. The frameworks scholars have developed to foster diversity, equity, inclusion, and social justice (DEISJ) in leadership education practice largely focus on individual and micro-level programmatic changes. LEPs are nested within larger racialized organizational and societal contexts. This dissertation investigates how different campus contexts racialize LEPs and their resources.
description: Manuscripts utilize Ray’s (2019) theory of racialized organizations and a critical comparative qualitative case study methodology of three distinct campuses and their LEPs. The first study examined how LEPs replicate and/or resist whiteness. Findings demonstrated that LEPs’ integration of DEISJ varied, despite broad DEISJ commitments across institutions. Largely, these varied commitments stemmed from leadership educators’ ideologies about whiteness, social justice, and leadership. Organizational and individual ideologies about leadership and leadership education practice shaped how whiteness was normalized and/or resisted across contexts.
description: The second study examined how resource allocation shaped leadership education practice and considered how access to resources was racialized. Findings demonstrated that DEISJ was a stated priority across campuses while leadership and leadership education programs were generally not. Although all three campus leadership programs purportedly supported campus diversity goals, the best resourced leadership programs largely centered white students’ learning and, at times, actively evaded DEISJ efforts. In contrast, the leadership program most actively committed to DEISJ was under-resourced. In short, findings demonstrated how institutions decoupled resource allocation from DEISJ commitments in ways that inequitably shaped access to resources and differentially shaped the agency of racial groups.
3935984.pdf
Creators: name: Sterczewski, Lukasz
name: Westberg, Jonas
name: Yang, Yang
name: Burghoff, David
name: Reno, John
name: Hu, Qing
name: Wysocki, Gerard
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplement 1 - supplementary information to ”Terahertz hyperspectral imaging with dual chip-scale combs"
Characterization of prostaglandin endoperoxide H synthase-1 enzyme expression during the differentiation of the megakaryocytic cell line, MEG-01.
Creators: name: Mroske, Cameron.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2000
Subjects: subject: Biology, Cell.

description: The specific objectives of my Master's project have been two-fold: to characterize the expression of prostaglandin endoperoxide synthase-1 (PGHS-1) protein and mRNA within the context of megakaryopoiesis, and to identify growth factors capable of inducing such expression. We induced MEG-01 cells to differentiate into platelet-like structures by treating them with TPA (12-0-tetradecanoylphorbol-13-acetate). We found that PGHS-1 protein levels were him in the platelet like population whereas PGHS-1 mRNA levels were greatest in the adherent population. We screened a number of recombinant hematopoietic factors for the ability to induce PGHS-1 protein expression in MEG-01 cells. We found that the combinations IL-3/IL-11/GM-CSF/SCF/TPO, IL-11/GM-CSF/SCF/TPO, IL-11/GM-CSF/TPO, IL-6/IL-11/GM-CSF/SCF, IL-6/IL-11, IL-3/IL-6, and IL 6/GM-CSF could induce PGHS-1 protein expression, but only when incubated with MEG-01 cultures that consisted solely of adherent cells. In conclusion, we have revealed that PGHS-1 protein and mRNA expression correlate strongly with megakaryocyte differentiation, and that certain cytokines can act in concert to stimulate adherent MEG-01 cells to increase their expression of PGHS-1 protein. The combination of IL-6 and -11 not only stimulates MEG-01 cells to increase their expression of PGHS-1 protein, but also PGHS-1 mRNA. (Abstract shortened by UMI.)
Two Essays on Customer Satisfaction and Loyalty
Creators: name: Kim, Sang Hee
Publisher: name: University of Iowa
Year: 2026
Subjects: Customer behavior metrics
Customer loyalty
Customer satisfaction
Inertia
Retention

description: This study contains two essays exploring dimensions of customer satisfaction and loyalty, areas that, despite decades of scholarly attention, still present under-researched questions.
description: The first essay investigates how customer satisfaction formation varies across different industries. It reveals that satisfaction evaluations are influenced significantly by industry, with absolute measure of satisfaction generally prevailing. Particularly in service industries, customers are inclined to compare their experience to expectations. Additionally, even in monopolistic industries, customers generate an internal benchmark.
description: The second essay explores the causal relationships between customer satisfaction and repurchase behavior, distinguishing between true loyalty and spurious loyalty influenced by inertia. The unique circumstances of the COVID-19 pandemic provide a natural experiment setting to separate the effects of loyalty from inertia, by eliminating inertial behavior.
description: Together, these essays enhance understanding of how customer satisfaction metrics are formulated and their critical role in predicting repurchase behaviors, thereby filling significant gaps in the existing literature on marketing research.
Echo tail canceller based on AIFIR filtering.
Creators: name: Abousaada, Anis Ahmed.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1990
Subjects: subject: Engineering, Electronics and Electrical.

description: This thesis contributes a computationally efficient echo tail canceller. The proposed structure is an adaptive version of the Interpolated FIR (IFIR) filter. The results obtained with this new approach are compared to those obtained with an AFIR direct form echo canceller. The proposed system requires approximately 31% of the hardware of the AFIR echo canceller. A two-stage echo canceller utilized in the U-interface at Basic Rate Access-ISDN is investigated. The first stage (Main Echo Canceller) is comprised of an AFIR filter which cancels the main echo pulse amid the first few symbol intervals. Cancellation of the echo tail is performed by the AIFIR tail canceller. To evaluate the performance of this architecture, echo impulse responses were produced for the Bellcore loop structures. These investigations were on the effects of parameters such as the passband edge and the stopband attenuation of the interpolator as well as length of the first stage echo canceller. (Abstract shortened by UMI.)
L'identification des particules chargées ultrarelativistes dans l'émulsion nucléaire.
Creators: name: Plante, Claude.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1990
Subjects: subject: Physics, Elementary Particles and High Energy.

description: L'étude présentée ici vise à déterminer la relation fonctionnelle existant entre la densité de grains de la trace d'une particule chargée dans l'émulsion nucléaire et le rapport p/mc de cette particule, ou p est la quantité de mouvement, m la masse et c la vitesse de la lumière. L'étude est menée a l'aide des émulsions, de type FUJI ET-7B, exposé dans le cadre de l'expérience E-531 (FNAL), ou se trouvaient réunies des émulsions nucléaires et des détecteurs électroniques, les densités de grains provenant des premières et les quantités de mouvement et les masses des seconds. La relation fonctionnelle observée peut être théoriquement expliquée en termes de deux effets électrodynamiques : la perte d'énergie par ionisation et le rayonnement de transition. Un accord quantitativement satisfaisant ne peut toutefois être obtenu qu'en introduisant dans la modélisation une fonction de résolution pour l'émulsion nucléaire, permettant de tenir compte des caractéristiques du processus photographique. Les modèles de perte d'énergie de Sternheimer (la perte d'énergie restreinte et la perte d'énergie la plus probable), qui ne permettent pas d'inclure une telle fonction, s'avèrent en désaccord, au plan quantitatif, avec les résultats expérimentaux. Un modelé, adapte des travaux de Fano et d'Allison, Bunch et Cobb en particulier, s'accorde avec les résultats expérimentaux si l'on ne tient compte, par le biais de la fonction de résolution, que des transferts d'énergie supérieurs à 90 eV et inférieurs à 1,4 keV. Dans le cas du rayonnement de transition, une fonction de résolution différente est requise, ou ne sont retenus que les transferts d'énergie s'étendant d'environ 450 eV jusqu'à 1,4 keV. La différence dans la fonction de résolution pour les deux effets électrodynamiques peut légitimement être expliquée par le fait qu'il s'agit de deux rayonnements actiniques différents.
Intramolecular Diels Alder-ROM-RCM approach towards the synthesis of triquinanes, and, Magnesium mediated carbometallation-annulation for the synthesis of fused rings
Creators: name: Nguyen, Natalie N. M
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2005
Subjects: subject: Chemistry, Organic.

description: In recent years, there has been a shift in focus in organic synthetic chemistry, steering away from multistep synthesis, leaning towards tandem and one pot reactions. Described herein is a unique, one pot method for the synthesis of linear triquinanes. The strategy involved a one pot intramolecular Diels-Alder---ring opening metathesis---ring closing metathesis sequence to form triquinane 85. Application of the new methodology towards the synthesis of antibiotic Delta(9,12)- capnellene (13) was performed. During our endeavors, the core ring structure 86 was synthesized.* Also described is a second project which involved the synthesis of bicyclic compounds through a new carbometallation-annulation reaction. The reaction was used for the synthesis of dihydrophenanthrene 129 and chiral tricycle 137. Insight into the application to the synthesis of indoles was also investigated.* *Please refer to dissertation for diagrams.
Developing a minimalist parser for free word order languages
Creators: name: Sayeed, Asad B
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2005
Subjects: subject: Computer Science.

description: We propose a parser for free word order languages, based on ideas from the Minimalist Program. The parser simulates aspects of a human listener who necessarily begins sentence analysis before all the words have become available. We first sketch the problems that free word order languages pose. One such problem is discontinuous noun phrase constituency. Languages like Latin permit verbs, adjectives and so on to split noun phrases. We assume that the human parser assembles syntactic structures in the process of understanding a sentence; what happens to noun phrase fragments that arrive later in the derivation? Those that arrive earlier enter the existing syntactic structures, so they become less accessible. What mechanism best incorporates later fragments without undoing structures already built? We show how difficult it is to make existing frameworks for minimalist parsing work for free word order languages and simulate realistic syntactic conditions. We briefly describe a formalism and a parsing algorithm that elegantly overcome these difficulties, and we illustrate them with detailed Latin examples. Previous formalisms for both minimalist generation and parsing tended to use cancellation of features as the primary mechanism for checking whether syntactic structures are compatible for merging into larger units. This is how words and phrases are marked as compatible and added to a larger structure. Instead, our formalism uses feature sets and unification-based operations in order to allow larger structures to acquire features from the smaller structures within them. They can then expose these features to discontinuous elements that arrive later in the derivation. In addition to the examples we provide for Latin, we provide English examples to demonstrate that this parsing algorithm can also be used with languages that require a more fixed order. After that, we discuss an implementation of this parsing algorithm written in Prolog. We then discuss an extension to this formalism that allows it handle pro-drop languages, and we show how this can be elegantly extended to further enhance the scope of linguistic phenomena this parser can handle beyond pro-drop. Finally, we present a corpus study that justifies some of the limitations of this parser.
3933884.pdf
Creators: name: Esmann, Martin
name: Lamberti, Fabrice
name: Harouri, Abdelmounaim
name: Lanco, Loïc
name: SAGNES, ISABELLE
name: Favero, Ivan
name: Aubin, Guy
name: Gomez-Carbonell, Carmen
name: Lemaitre, Aristide
name: Krebs, Olivier
Publisher: name: Optica Publishing Group
Year: 2019
Subjects: Uncategorized

description: Photoelastic model of the anti-Stokes Brillouin scattering cross-section, polarization dependence of the Brillouin signal, spatial filtering of the Brillouin signals in planar and pillar microcavities, and backscattering in superlattices
Numerical simulations of turbulent flow and heat transfer in rod bundles
Creators: name: Chang, Dongil
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2006
Subjects: subject: Engineering, Mechanical.

description: The unsteady Reynolds-averaged Navier-Stokes equations, supplemented by a Reynolds stress model, were solved with relatively high spatial and temporal resolutions to determine the time-averaged mean velocity and turbulent stresses in isothermal, single phase flows in a rectangular duct containing a single rod and in a 37-rod rod bundle. In addition, the time-averaged mean temperature, temperature fluctuation variance and turbulent heat fluxes were computed in the single-rod duct flow in which the rod was heated passively. The computed values were, in general, in fair agreement with available experimental results. The simulations also resolved the formation of coherent structures in the form of counter-rotating vortices with axes alternating on either side of rod-rod and rod-wall gaps. The contributions of these coherent structures on the turbulent and thermal fields and on cross-gap mixing were documented and found to be substantial. The action of coherent structures moderates the mean temperature rise in the gap region but creates substantial local variation of the instantaneous temperature fluctuations at relatively low frequencies. Reduction of the gap size below a critical value resulted in a decrease of the frequency of coherent fluctuations and the cross-channel mixing efficiency, contrary to predictions based on the extrapolation of available empirical correlations. In the case of the 37-rod bundle, the coherent velocity fluctuations were found to be strongly correlated in the entire computational domain.
The effects of hormones, growth factors and cyclic AMP on ovarian carcinoma cell proliferation and expression of c-kit and Kit ligand.
Creators: name: Keszthelyi, Eniko Judith.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1998
Subjects: subject: Biology, Cell.

description: The protooncongene c-kit encodes a tyrosine kinase receptor (Kit) that is activated by its ligand KL to promote proliferation, survival and migration of Kit-bearing cells. In addition to its ability to induce transformation in transfected cells, c-kit is overexpressed in many cancers, including those of the ovary. The goal of this research project was to examine the regulation of c-kit and KL expression in ovarian carcinoma cells, by factors which are produced by, and/or act on the ovary, such as steroid and gonadotropic hormones, and growth factors. Studies were completed using two ovarian carcinoma cell lines, HEY and OVCA 429, which are both c-kit- and KL-bearing, as in vitro model systems for ovarian carcinoma. Using these 2 cell lines, the effects on proliferation and c-kit and KL mRNA expression of: epidermal growth factor (EGF), transforming growth factors-$\alpha$ and $\beta$ (TGF-$\alpha$ and TGF-$\beta$), estradiol (E$\sb2),$ progesterone (P$\sb4),$ testosterone (T), follicle stimulating hormone (FSH), human chorionic gonadotropin (hCG), cyclic adenosine monophosphate (cAMP) analogues (dibutyryl-adenosine-3$\sp\prime$:5$\sp\prime$-monophosphate, cyclic (dbcAMP) and 8-bromo-adenosine-3$\sp\prime$:5$\sp\prime$-monophosphate, cyclic (8-bromo-cAMP)) and an adenylate cyclase activator (cholera toxin) were determined. (Abstract shortened by UMI.)