cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Heard and valued: the development of a model to meaningfully engage marginalized populations in health services planning
Creators: name: Snow, M. Elizabeth
name: Tweedie, Katherine
name: Pederson, Ann
Publisher: name: BioMed Central
Year: 2018

description: Background: Recently, patient engagement has been identified as a promising strategy for supporting healthcare planning. However, the context and structure of universalistic, “one-size-fits-all” approaches often used for patient engagement may not enable diverse patients to participate in decision-making about programs intended to meet their needs. Specifically, standard patient engagement approaches are gender-blind and might not facilitate the engagement of those marginalized by, for example, substance use, low income, experiences of violence, homelessness, and/or mental health challenges—highly gendered health and social experiences. The project’s purpose was to develop a heuristic model to assist planners to engage patients who are not traditionally included in healthcare planning. Methods: Using a qualitative research approach, we reviewed literature and conducted interviews with patients and healthcare planners regarding engaging marginalized populations in health services planning. From these inputs, we created a model and planning manual to assist healthcare planners to engage marginalized patients in health services planning, which we piloted in two clinical programs undergoing health services design. The findings from the pilots were used to refine the model. Results: The analysis of the interviews and literature identified power and gender as barriers to participation, and generated suggestions to support diverse populations both to attend patient engagement events and to participate meaningfully. Engaging marginalized populations cannot be reduced to a single defined process, but instead needs to be understood as an iterative process of fitting engagement methods to a particular situation. Underlying this process are principles for meaningfully engaging marginalized people in healthcare planning. Conclusion: A one-size-fits-all approach to patient engagement is not appropriate given patients’ diverse barriers to meaningful participation in healthcare planning. Instead, planners need a repertoire of skills and strategies to align the purpose of engagement with the capacities and needs of patient participants. Just as services need to meet diverse patients’ needs, so too must patient engagement experiences.
Display management for a shared visual workspace in a game playing context.
Creators: name: Le Bail, Éric.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1991
Subjects: subject: Engineering, Electronics and Electrical.

description: In this thesis, the term display management refers to organizing the way users have access to the graphical interface to a system. The special class of systems considered is that of real-time multi-user applications, that present special characteristics, different from those existing for single-user programs. In this context, display management is achieved through the use of a production system controlling the actions of the users, and determining how the graphical objects on each screen are to be seen. A prototype is implemented in the particular case of poker game. The approach chosen can be characterized by three salient features. Firstly, it integrates a rule-based system in a real-time multi-user application. Secondly, it emphasizes the reconfigurability aspect. Thirdly, the system allows to define complex relationships between the users and the interface.
PSR J1410-6132: A young, energetic pulsar associated with the EGRET source 3EG J1410-6147
Creators: name: O'Brien, J. T.
name: Johnston, S.
name: Kramer, M.
name: Lyne, A. G.
name: Bailes, Matthew
name: Possenti, A.
name: Burgay, M.
name: Lorimer, D. R.
name: McLaughlin, M. A.
name: Hobbs, G.
name: Parent, D.
name: Guillemot, L.
Publisher: name: Swinburne
Year: 2024

description: We present the discovery of PSR J1410−6132, a 50-ms pulsar found during a high-frequency survey of the Galactic plane, using a seven-beam 6.3-GHz receiver on the 64-m Parkes radio telescope. The pulsar lies within the error box of the unidentified Energetic Gamma Ray Experiment Telescope (EGRET) source 3EG J1410−6147, has a characteristic age of 26 kyr and a spin-down energy of 1037 erg s−1. It has a very high dispersion measure of 960 ± 10 cm−3 pc and the largest rotation measure of any pulsar, RM = +2400 ± 30 radm−2. The pulsar is very scatter-broadened at frequencies of 1.4 GHz and below, making pulsed emission almost impossible to detect. Assuming a distance of 15 kpc, the pulsar’s spin-down energy and a γ -ray efficiency factor of ∼10 per cent is sufficient to power the γ -ray source. We therefore believe that we have identified the nature of 3EG J1410−6147. This new discovery suggests that deep targeted high-frequency surveys of inner-galaxy EGRET sources could uncover further young, energetic pulsars.
3916309.pdf
Creators: name: Ota, Yasutomo
name: Liu, Feng
name: Katsumi, Ryota
name: Watanabe, Katsuyuki
name: wakabayashi, katsunori
name: Arakawa, Yasuhiko
name: Iwamoto, Satoshi
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplement 1
Gravitational science with pulsars and the square kilometre array
Creators: name: Stairs, I. H.
name: Kramer, M.
name: Backer, D.
name: Bailes, Matthew
name: Cordesk, J. M.
name: Johnston, S.
name: Kaspi, Victoria M.
name: Lazio, T. J W
name: Ransom, S. M.
name: Stappers, B.
Publisher: name: Swinburne
Year: 2024

description: Pulsar observations form one of the Key Science Projects for the Square Kilometre Array. These will allow unique tests of General Relativity based on finding and timing pulsars in relativistic binaries and on timing millisecond pulsars distributed across the sky in an effort to detect a background of gravitational radiation.
L'accord général sur le commerce des services et les pays en développement.
Creators: name: Jean, Stéphane.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1998
Subjects: subject: Law.

description: L'Accord general sur le commerce des services (GATS) constitue le premier cadre multilateral regissant le secteur des services dans son ensemble. Ce secteur comprend des domaines aussi divers que les services bancaires, le tourisme, les assurances, les transports, les telecommunications, les services de construction et d'ingenierie. D'ou la necessite de proceder a une evaluation de cet accord en fonction des interets des pays en developpement. Ces interets sont: (1) l'avantage comparatif selon les secteurs; (2) la protection de leurs industries naissantes; (3) leur securite nationale et leur souverainete; (4) l'acces aux reseaux de distribution et d'information et a la technologie; (5) le mouvement de leur main-d'oeuvre. Dans le cadre de cette these nous procedons a un examen detaille et critique des dispositions du GATS en fonction de ces interets. Nous examinons ainsi les obligations et disciplines generales decoulant de l'accord notamment les dispositions concernant le traitement de la nation la plus favorisee, l'integration economique, la participation croissante des pays en developpement, les pratiques commerciales restrictives et les mesures de sauvegarde. Nous etudions egalement les dispositions relatives au traitement national et a l'acces aux marches qui doivent elles faire l'objet d'engagements specifiques. (Abstract shortened by UMI.)
3913069.pdf
Creators: name: Zhang, Ruikang
name: Chouket, Raja
name: Tebo, Alison
name: Plamont, Marie-Aude
name: Kelemen, Zsolt
name: Gissot, Lionel
name: Faure, Jean-Denis
name: Gautier, Arnaud
name: Croquette, Vincent
name: Jullien, Ludovic
Publisher: name: Optica Publishing Group
Year: 2019
Subjects: Uncategorized

description: A simple imaging protocol for autofluorescence elimination and optical sectioning in fluorescence endomicroscopy: supplementary material
The cradle of life and the SKA
Creators: name: Hoare, M. G.
name: Perez, L.
name: Bourke, T. L.
name: Testi, L.
name: Jimenez-Serra, Izaskun
name: Zarka, P.
name: Siemion, A.
name: Langevelde, H. J.V.
name: Loinard, L.
name: Anglada, Guillem
name: Belloche, A.
name: Bergman, P.
name: Booth, R.
name: Caselli, P.
name: Chandler, C. J.
name: Codella, C.
name: Hallinan, G.
name: Lazio, J.
name: Morrison, Ian
name: Podio, L.
name: Remijan, A.
name: Tarter, J.
Publisher: name: Swinburne
Year: 2024
Subjects: classificationCode: 510101
subject: Astrobiology

description: We provide an overview of the exciting capabilities of the SKA in the Cradle of Life theme. With the deployment of the high frequency band 5 receivers, the phase 1 of the SKA can conduct headline science in the study of the earliest stages of grain growth in proto-planetary disks. SKA1-MID can map the 2 cm continuum emission at a resolution of 4 au in the nearest systems and therefore begin to probe the distribuion of cm-sized particles across the snow line. This frequency range will also enable deep searches for pre-biotic molecules such as amino acids from pre-stellar cores to the cold, outer regions of proto-planetary disks where cometary material forms. The lowest frequency capabilities of SKA1 can be used to examine the magnetic fields of exo-planets via their auroral radio emission. This gives unique insight into their interiors and could potentially detect exo-moons. Across the full frequency range, the SKA1 will also carry out systematic, volume-limited searches of exo-planet systems for signals from technologically advanced civilizations. The sensitivity of SKA1 means that these only need to be at the level of typical airport radar signals in the nearest systems. Hence, the SKA1 can conduct high impact science from the first steps on the road to planets and life, through areas affecting the habitability of planets, and ultimately, to whether we are alone in the Galaxy. These inspirational themes will greatly help in the effort to bring SKA1 science to a wide audience and to ensure the progression to the full SKA.
An examination of college major meaning using a consensual qualitative research approach
Creators: name: Dawson, Devon
Publisher: name: University of Iowa
Year: 2023
Subjects: College Major Meaning
Consensual Qualitative Research
Meaning Making
STEM Enrichment Program
public abstract

description: Purpose and meaning in career development has become an increasing area of interest in the field of counseling and vocational psychology. Indeed, a burgeoning body of literature exists examining meaning-making in working adults, however presently there is a paucity of research examining meaning-making for college students’ academic major. Theories of meaning-making in working adult populations may be useful for interpreting meaning making processes for college students that can influence the way in which career counselors and educators who work within college settings engage with students and respective programming. Informed by Rosso et al.’s (2010) theory of career meaning-making, this qualitative study explored the retrospective sources and mechanisms of college meaning making in seven alumni of a STEM enrichment program through semi-structured interviews. A consensual qualitative research approach (CQR) was used to construct an understanding of participants’ subjective description of how participation in a STEM enrichment program contributed to meaning making in their chosen major, related academic pursuits, and current career.
Variable screening for high-dimensional data via Pearson's chi-square statistic
Creators: name: Wang, Xingzhi
Publisher: name: University of Iowa
Year: 2026

description: For solving the problem of continuous domain regression or discrete domain classification, variable/feature screening is an effective approach and to a certain extent even computationally indispensable when the number of predictor variables, p, is extremely large, as compared to n, the number of data cases. We are firstly concerned with the situations where both the predictor and the response variables are categorical variables and then extend the usage of the marginal utility statistic proposed beyond the categorical setting, which would further expand its applications in diverse fields including economics and medical studies, etc. For categorical feature screening, we adopt the framework introduced by Guo et al. (2023) to screening categorical variables via the Pearson's chi-square statistic. We derive a set of sufficient conditions for controlling the false discovery rate of the proposed method, in the ultrahigh dimensional setting. Our theoretical innovations are twofold: (i) we apply Bayesian model averaging to obtain the desired false discovery rate under the exchangeability assumption and (ii) do so by establishing the uniform consistency of the Pearson's chi-square statistics at a certain rate
description: that allows for diverging number of categories and some cells with nearly zero cell probabilities.
description: Furthermore, equipped with the idea of data binning, we widen the applicability of the Pearson's chi-square statistic beyond random variables with finite supports, through the creation of a novel population-level dependency measure which we call the Pearson's chi-square divergence, and whose potency may be carried towards multivariate variables or even more exotic random processes. Our main theoretical developments are focused upon: (i) elaborating the conditions that guarantee the uniform consistency of the Pearson's chi-square statistics under data-based binning to the Pearson's chi-square divergence and (ii) offering some closed-form formulae, in terms of the sample size, for the number of bins that could be empirically used for certain classes of marginal distributions for the covariates and the response.
description: Finally, we report results from extensive numerical studies for contrasting the empirical performance of various marginal utilities for categorical/continuous type data and further illustrate them with real applications.
Searching for extraterrestrial intelligence with the square kilometre array
Creators: name: Siemion, A.
name: Benford, James
name: Jin, Cheng Jin
name: Chennamangalam, J.
name: Cordes, J.
name: Falcke, H.
name: Garrington, Simon T.
name: Garrett, M. A.
name: Gurvits, L. I.
name: Hoare, M. G.
name: Korpela, E.
name: Lazio, J.
name: Messerschmitt, David
name: Morrison, Ian
name: Paragi, Z.
name: Penny, A.
name: Spitler, L. G.
name: Tarter, Jill C.
name: Werthimer, Dan J.
Publisher: name: Swinburne
Year: 2024
Subjects: classificationCode: 510101
subject: Astrobiology

description: The vast collecting area of the Square Kilometre Array (SKA), harnessed by sensitive receivers, flexible digital electronics and increased computational capacity, could permit the most sensitive and exhaustive search for technologically-produced radio emission from advanced extraterrestrial intelligence (SETI) ever performed. For example, SKA1-MID will be capable of detecting a source roughly analogous to terrestrial high-power radars (e.g. air route surveillance or ballistic missile warning radars, EIRP† 1017 erg sec1) at 10 pc in less than 15 minutes, and with a modest four beam SETI observing system could, in one minute, search every star in the primary beam out to 100 pc for radio emission comparable to that emitted by the Arecibo Planetary Radar (EIRP 2 x 1020 erg sec1)‡. The flexibility of the signal detection systems used for SETI searches with the SKA will allow new algorithms to be employed that will provide sensitivity to a much wider variety of signal types than previously searched for. Here we discuss the astrobiological and astrophysical motivations for radio SETI and describe how the technical capabilities of the SKA will explore the radio SETI parameter space. We detail several conceivable SETI experimental programs on all components of SKA1, including commensal, primary-user, targeted and survey programs and project the enhancements to them possible with SKA2. We also discuss target selection criteria for these programs, and in the case of commensal observing, how the varied use cases of other primary observers can be used to full advantage for SETI.
Fast transients at cosmological distances with the SKA
Creators: name: Macquart, Jean Pierre
name: Keane, Evan
name: Grainge, Keith
name: McQuinn, Matthew
name: Fender, R.
name: Hessels, Jason W T
name: Deller, Adam
name: Bhat, Ramesh
name: Breton, R. P.
name: Chatterjee, S.
name: Law, C.
name: Lorimer, Duncan R.
name: Ofek, Eran O.
name: Pietka, M.
name: Spitler, L. G.
name: Stappers, B.
name: Trott, Cathryn M.
Publisher: name: Swinburne
Year: 2024

description: Impulsive radio bursts that are detectable across cosmological distances constitute extremely powerful probes of the ionized Inter-Galactic Medium (IGM), intergalactic magnetic fields, and the properties of space-time itself. Their dispersion measures (DMs) will enable us to detect the "missing" baryons in the low-redshift Universe and make the first measurements of the mean galaxy halo profile, a key parameter in models of galaxy formation and feedback. Impulsive bursts can be used as cosmic rulers at redshifts exceeding 2, and constrain the dark energy equation-of-state parameter, w(z) at redshifts beyond those readily accessible by Type Ia SNe. Both of these goals are realisable with a sample of ∼104 fast radio bursts (FRBs) whose positions are localized to within one arcsecond, sufficient to obtain host galaxy redshifts via optical follow-up. It is also hypothesised that gravitational wave events may emit coherent emission at frequencies probed by SKA1-LOW, and the localization of such events at cosmological distances would enable their use as cosmological standard sirens.
To perform this science, such bursts must be localized to their specific host galaxies so that their redshifts may be obtained and compared against their dispersion measures, rotation measures, and scattering properties. The SKA can achieve this with a design that has a wide field-of-view, a substantial fraction of its collecting area in a compact configuration (80% within a 3,km radius), and a capacity to attach high-time-resolution instrumentation to its signal path.
title: Creature’s metropolis
title: animals, humans, and the rise of Chicago, 1870–1930
titleType: Subtitle
Creators: name: Marks, Jennifer
Publisher: name: University of Iowa
Year: 2026
Subjects: animal
Chicago
interspecies
urbanization

description: Between 1870 and 1930 in the United States, cities grew into towering, electrified, and stratified cosmopolitan centers. Horses pulled streetcars; cattle, hogs, and sheep crowded in stockyard pens; dogs roamed at will; and taxidermied animals of all shapes and sizes filled museum display cases. American industrial urban modernity—typified by Chicago at the turn of the century—was not an exclusively human production and instead emerged out of a complex system of interspecies relationships. Between the 1871 fire and the 1933 Century of Progress Exhibition, Chicago gained the trappings of a modern industrial city. The metropolis expanded railways, sprouted skyscrapers, swelled with stockyards, constructed cultural institutions, and fractured into deep class rifts, but animals remained important in a variety of ways. Interspecies contact and the animal perspective can be illuminated through four urban forms—the street, the stockyard, the fair, and the museum—whose origins lay in the co-constructive efforts between humans and animals and whose development shaped Chicago’s infrastructure and culture. Animal bodies, animal labor, and animal agency helped produce urban systems for public transportation and industrialized meat processing as well as ideas about municipal planning and institutions for civic knowledge. The impacts from those systems rippled outward, determining which animals had a right to public space, what animals should look like, and where humans belonged in the natural world.
description: Understanding these issues in American industrial urban modernity reveals the thick web of interspecies relationships that provided the physical, financial, and cultural bedrock of the modern metropolis. This project offers a model for environmental and animal histories by demonstrating the analytical value of inhabiting a species-specific perspective and tracking interspecies connections over time and across urban space.
title: Body weight status, eating behavior, sensitivity to reward/punishment, and gender
title: relationships and interdependencies
titleType: Subtitle
Creators: name: Dietrich, Anja
name: Federbusch, Martin
name: Grellmann, Claudia
name: Villringer, Arno
name: Horstmann, Annette
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2014
Subjects: subject: 100 Philosophie und Psychologie::150 Psychologie

description: Behavioral and personality characteristics are factors that may jointly regulate body weight. This study explored the relationship between body mass index (BMI) and self-reported behavioral and personality measures. These measures included eating behavior (based on the Three-Factor Eating Questionnaire; Stunkard and Messick, 1985), sensitivity to reward and punishment (based on the Behavioral Inhibition System/Behavioral Activation System (BIS/BAS) scales) (Carver and White, 1994) and self-reported impulsivity (based on the Barratt Impulsiveness Scale-11; Patton et al., 1995). We found an inverted U-shaped relationship between restrained eating and BMI. This relationship was moderated by the level of disinhibited eating. Independent of eating behavior, BIS and BAS responsiveness were associated with BMI in a gender-specific manner with negative relationships for men and positive relationships for women. Together, eating behavior and BIS/BAS responsiveness accounted for a substantial proportion of BMI variance (men: ∼25%, women: ∼32%). A direct relationship between self-reported impulsivity and BMI was not observed. In summary, our results demonstrate a system of linear and non-linear relationships between the investigated factors and BMI. Moreover, body weight status was not only associated with eating behavior (cognitive restraint and disinhibition), but also with personality factors not inherently related to an eating context (BIS/BAS). Importantly, these relationships differ between men and women.
Development of a pulsar-based time-scale
Creators: name: Hobbs, G.
name: Coles, W.
name: Manchester, R.
name: Keith, M. J.
name: Shannon, Ryan
name: Chen, D.
name: Bailes, Matthew
name: Bhat, N. D R
name: Burke-Spolaor, S.
name: Champion, David J.
name: Chaudhary, A.
name: Hotan, A.
name: Khoo, J.
name: Kocz, J.
name: Levin, Y.
name: Oslowski, Stefan
name: Preisig, B.
name: Ravi, V.
name: Reynolds, J.
name: Sarkissian, J. M.
name: van Straten, Willem
name: Verbiest, J. P W
name: Yardley, D.
name: You, X. P.
Publisher: name: Swinburne
Year: 2024
Subjects: classificationCode: 5101
subject: Astronomical sciences
classificationCode: 5109
subject: Space sciences

description: Using observations of pulsars from the Parkes Pulsar Timing Array (PPTA) project we develop the first pulsar-based time-scale that has a precision comparable to the uncertainties in International Atomic Time-scales (TAI). Our ensemble of pulsars provides an Ensemble Pulsar Scale (EPS) analogous to the free atomic time-scale Echelle Atomique Libre. The EPS can be used to detect fluctuations in atomic time-scales and therefore can lead to a new realization of Terrestrial Time, TT(PPTA11).We successfully follow features known to affect the frequency of the TAI, and we find marginally significant differences between TT(PPTA11) and TT(BIPM11). We discuss the various phenomena that lead to a correlated signal in the pulsar timing residuals and therefore limit the stability of the pulsar time-scale.
Réception critique de l'oeuvre de Marie Uguay.
Creators: name: Lengellé, Claire-Hélène.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1998
Subjects: subject: Literature, Canadian (French).

description: L'oeuvre de Marie Uguay comprend trois recueils: Signe et rumeur (1976), L'outre-vie (1979) et Autoportraits (1982). Deux autre recueils intitules Poemes (1986 et 1994) regroupent les trois premiers titres ainsi que des inedits. Cette etude vise a demontrer comment l'oeuvre de Marie Uguay est passee d'une relative occultation a une celebration certaine. En nous appuyant sur le modele theorique d'Hans Robert Jauss dans Pour une esthetique de la reception (1978), de meme que sur les travaux de Pierre Bourdieu, notamment soa article "Le marche des biens symboliques" (1971) qu'il actualise en 1992 dans Les Regles de l'art. Genese et structure du champ litteraire, nous nous proposons de cerner les enjeux sous-jacents aux discours tenus sur cette oeuvre. Dans la mesure ou les instances de reconnaissance et de consecration jouent un role de premier plan dans la conception de l'histoire litteraire telle que la presente Jauss, il s'agit de circonscrire le groupe de recepteurs et d'analyser les mecanismes de lecture et d'appreciation des oeuvres qui menent a un classement ou a un autre. La nouveaute relative de notre these est double: le choix de Marie Uguay, sur qui, sauf erreur, aucune etude approfondie n'a encore ete realisee; l'etude de la reception critique de son oeuvre qui nous permettra de mettre en relief les enjeux institutionnels de la poesie quebecoise a la fin des annees soixante-dix et au debut des annees quatre-vingt.
3916237.pdf
Creators: name: Newman, Zachary
name: Maurice, Vincent
name: Drake, Tara
name: Stone, Jordan
name: Briles, Travis
name: Spencer, Daryl
name: Fredrick, Connor
name: Li, Qing
name: Westly, Daron
name: Ilic, Robert
Publisher: name: Optica Publishing Group
Year: 2019
Subjects: Uncategorized

description: Supplementary Text
Physiological changes in the wheat root tip following growth and vernalization.
Creators: name: Bourque, Genevieve.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1969
Subjects: subject: Agriculture, Agronomy.

description: Sequential changes in the alcohol soluble amino acid and carbohydrate fractions of vernalized and control root tips of Triticum aestivum var. Marquis (spring) and Rideau (winter) wheats have been followed. Substantial changes in these fractions could be related to developmental changes in the root tip. Vernalization superimposed additional, consistent changes mainly in the content of the amino acids asparagine, glutamine, glycine, and glutamic acid, and of the sugars fructose and sucrose. Incorporation studies using 14C glutamic acid and aspartic acid served to emphasize the distinct metabolic differences between the mitotic and elongating regions of the root tips. In the mitotic region, the highest incorporation of label was in the protein fraction, whereas in the elongating region, the highest activity was recovered in the free amino acid pool. Two enzyme systems, namely amylase and glutamic acid-alanine transaminase were also studied. The possibility of using the uptake of 51Cr as an indicator of metabolic change in wheat root tips, as it is in animal tissues, was also examined. A consistent Patttern of 51Cr incorporation was observed in the serial Sections of both wheat varieties. The changed metabolic state attendant on vernalization was reflected by a higher level of 51Cr incorporation. Histochemical studies of sulphtydryl group distribution along the wheat root tip were also carried out in order to determine whether there exists a relationship between sulphydryl groups and the pattern of 51Cr uptake. No such correlation could be established. The effect of the water content of the grain during vernalization which is known to affect the subsequent root growth, was also examined. Incomplete imbibition led to a lessened metabolic response to the cold treatment.
Mechanisms of vascular endothelial dysfunction in chronic e-cigarette users
Creators: name: Halstead, Kristen
Publisher: name: University of Iowa
Year: 2023
Subjects: Electronic cigarettes (e-cigarettes)
Microvascular Endothelial Dysfunction
Sex Differences
Superoxide Anion
Vaping
public abstract
Oxidative Stress

description: Tobacco and nicotine use cause vascular endothelial dysfunction, thus increasing lifetime cardiovascular disease (CVD) risk. Whether this is also true for e-cigarette use remains unknown. Tobacco cigarette smoking leads to higher CVD burden in females compared to males, but no studies of e-cigarette use have examined sex-differences in vascular responses that inform lifetime CVD risk. Chronic e-cigarette use is reported to decrease endothelial function, a potent predictor of future CVD risk. However, the mechanism(s) mediating this reduction remain unclear.
description: Using the cutaneous circulation as a model, we examined endothelium- and nitric oxide (NO)-dependent dilation, and the role of oxidative stress in attenuating these responses, in otherwise healthy, young chronic (≥6 months) e-cigarette users (EC) compared to healthy controls (HC). 20 HC (21±2 yrs; 10M/10F) and 20 EC (21±2 yrs; 10M/10F) underwent a standard local heating protocol (42°C; 0.1°C·s-1). Two intradermal microdialysis fibers were placed in the ventral forearm skin for local delivery of lactated Ringer’s (control), or 10µM tempol (superoxide dismutase mimetic). After full expression of the local heating response, 15mM NG-nitro-L-arginine methyl ester (L-NAME; NO synthase-inhibition) was perfused. Red cell flux was measured continuously by laser-Doppler flowmetry, and cutaneous vascular conductance (CVC=flux/MAP) was standardized to maximum (%CVCmax; 28mM SNP + 43°C).
description: Between groups, endothelium- (EC: 73.1 ± 14.3 vs HC: 86.5 ± 8.9 %CVCmax; p<0.001) and NO-dependent (EC: 49.5 ± 18.1% vs HC: 61.8 ± 14.7%) dilation were attenuated in EC compared to HC. Local tempol perfusion increased endothelium- (83.6 ± 11.6 %CVCmax; p=0.01) and NO-dependent (62.6 ± 13.5%; p=0.005) dilation in EC but had no effect in HC (all p>0.05). Within sex, female EC had lower endothelium- (EC: 71.0 ± 13.3 vs HC: 89.1 ± 7.3 %CVCmax; p=0.002) and NO-dependent (EC: 46.9±5.5 vs HC: 69.4±10.8%; p=0.005) dilation compared to female HC. There were no differences between these responses in HC and EC males (both p>0.05). Tempol perfusion augmented endothelium- (83.1 ± 12.8 %CVCmax; p=0.002) and NO-dependent (62.3 ± 13.1%; p=0.015) dilation in EC females but had no effect in EC males (both p>0.05).
description: These data suggest that otherwise healthy young adult e-cigarette users have reduced microvascular endothelium- and NO-dependent dilation. Within e-cigarette users, these results are driven by greater reductions in females. Oxidative stress, and specifically superoxide anion, contributes to these impairments. Females who use e-cigarettes demonstrate greater reductions in endothelial function and may have increased risk for developing future CVD.
Pervaporation dehydration of isopropanol/water using poly(hema)/poly acrylic acid composite membranes.
Creators: name: El-Anani, Anas.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2000
Subjects: subject: Engineering, Chemical.

description: Dehydration of alcohols by pervaporation is a growing industry which has many advantages over the high energy consuming and polluting distillation. Pervaporation is a unique membrane separation process that involves phase change. Poly (2-hydroxyethylmethacrylate) and polyacrylic acid were used to form a selective layer on top of polyacrylonitrile and polyethersulfone porous substrate membranes, to perform dehydration of isopropyl alcohol by pervaporation. In order to achieve the best performance, membranes were prepared under many casting variables including casting solution compositions, number of layers, curing temperatures and curing times. The fluxes of composite membranes based on polyethersulfone substrate were higher than those based on polyacrylonitrile substrate when the membranes were prepared under the same preparation conditions. On the other hand, selectivities of polyethersulfone based membranes were lower. Therefore, attempts were made to increase the flux of polyacryolonitrile composite membranes. The best flux and separation factor of polyethersulfone composite membranes were 0.126 kg/hr.m2 and 183.12, respectively, while for polyacrylonitrile composite membranes they were 0.038 kg/hr.m 2 and 1925, respectively. Cross-linking was necessary to prevent the swelling of the coated layer of poly (2-hydroxyethylmethacrylate), which was done by adding polyacrylic acid as a cross-linking agent. It was found that the pores of the substrate membrane shrunk during the cross-linking process.
Capture Rates of Highly Degenerate Neutrons
Creators: name: Knight, B.
name: Caballero, O. L.
name: Schatz, H.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: At the low temperature and high density conditions of a neutron star crust neutrons are degenerate. In this work, we study the effect of this degeneracy on the capture rates of neutrons on neutron rich nuclei in accreted crusts. We use a statistical Hauser-Feshbach model to calculate neutron capture rates and find that neutron degeneracy can increase rates significantly. Changes increase from a factor of a few to many orders of magnitude near the neutron drip line. We also quantify uncertainties due to model inputs for masses, $γ$-strength functions, and level densities. We find that uncertainties increase dramatically away from stability and that degeneracy tends to increase these uncertainties further, except for cases near the neutron drip line where degeneracy leads to more robustness. As in the case of capture of classically distributed neutrons, variations in the mass model have the strongest impact. Corresponding variations in the reaction rates can be as high as 3 to 4 orders of magnitude, and be more than 5 times larger than under classical conditions. To ease the incorporation of neutron degeneracy in nucleosynthesis networks, we provide tabulated results of capture rates as well as analytical expressions as function of temperature and neutron chemical potential, for proton numbers between $3 \le Z \le 85$, derived from fits to our numerical results. Fits are based on a new parametrization that complements previously employed power law approximations with additional Lorentzian terms that account for low energy resonances, significantly improving accuracy.
description: 16 pages, 11 figures. Tabulated reaction rates can be found at https://github.com/Nyrb1001/Degenerate-Neutron-Captures
Holographic antennas realized from interference patterns determined in the presence of the dielectric substrate
Creators: name: Quach, Tan
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2006
Subjects: subject: Engineering, Electronics and Electrical.

description: Holographic antennas are attractive due to their low-profile and potentially high gain. These antennas are synthesized from the interference pattern of a reference wave and a plane wave. The reference wave is generated by the feed antenna and the plane wave is used to represent an ideal antenna's wavefront in the far-zone. At millimeter-wave frequencies, using printed circuit technology to fabricate the hologram requires the use of an approximated form of the interference pattern. The hologram is realized by etching metallic strips at the pattern's minima on a dielectric substrate. The strips are used to "record" the minima of the interference pattern since the tangential electric field is forced to zero there. Previous works have addressed other issues while using the free-space interference pattern to realize the binary hologram. The objective of this thesis is to investigate the effects of the realistic source and the presence of the dielectric substrate on the interference pattern. The new patterns could provide insights as to where the strips should be placed with respect to the feed, and the required curvature of the strips. (Abstract shortened by UMI.)
Enabling the next generation of cm-wavelength studies of high-redshift molecular gas with the SKA
Creators: name: Wagg, J.
name: Lima Da Cunha, Elisabete
name: Carilli, C. L.
name: Walter, F.
name: Aravena, M.
name: Heywood, Ian
name: Hodge, J. A.
name: Murphy, E. J.
name: Riechers, D.
name: Sargent, M. T.
name: Wang, Ran
Publisher: name: Swinburne
Year: 2024

description: The Square Kilometre Array will be a revolutionary instrument for the study of gas in the distant Universe. SKA1 will be among the first facilities with sufficient sensitivity to detect and image atomic 21 cm HI in individual galaxies at significant cosmological distances, complementing on- going ALMA imaging of redshifted high- J CO line emission and far-infrared interstellar medium lines such as [CII] 157.7 m m. At frequencies below 50 GHz, observations of redshifted emission from low- J transitions of CO, HCN, HCO + , HNC, H 2 O and CS provide insight into the kinemat- ics and mass budget of the cold, dense star-forming gas in galaxies. In advance of ALMA band 1 deployment (35 to 52 GHz), the most sensitive facility for high-redshift studies of molecular gas operating below 50 GHz is the Karl G. Jansky Very Large Array (VLA). Here, we present an overview of the role that the SKA could play in molecular emission line studies during SKA1 and SKA2, with an emphasis on studies of the dense gas tracers directly probing regions of active star-formation.
Influence of print direction on accuracy and mechanical properties of 3 D printing resin
Creators: name: Itakpe, Josephine
Publisher: name: University of Iowa
Year: 2026
Subjects: 3 D Printing
Accuracy
Fracture resistance
Resin
SEM
public abstract
Mechanical Properties

description: Objective: To assess the influence of print direction on accuracy and mechanical properties of 3D printable resin-based composites by estimating the length, width, and height dimensions, determination of flexural strength and modulus, wear properties, and fracture resistance.
description: Method: Permanent Crown Resin (Formlabs) and Temporary CB Resin (Formlabs) were used to print specimens in (0o, 45o, and 90o) directions using Formlabs Form 3 Low Force Stereolithographic (LFS) desktop printer. Ninety-six specimens (2mmx2xxmm25mm) were printed to assess dimensional accuracy and flexural strength. seventy-two cylindrical-shaped specimens (6mmx3mm) were for localized wear testing. For fracture resistance, ninety-six premolar crowns and abutments were printed using temporary CB and permanent crown resin while premolar die abutments were printed with Vero White resin (Stratasys) using Stratasys J750 polyjet 3D printer. A digital micrometer (ABSOLUTE Digimatic, Mitutoyo) was used to measure specimens’ length, width, and height (n=16). Flexural strength testing was conducted (n=16) in three-point bending following ISO 4049. While localized wear testing (n=12) was stimulated using 400,000 cycles in a Lenifelder-Suzuki machine. Ninety-six premolar crowns were subjected to fracture resistance testing (n=16) with a crosshead speed of 0.5 mm/min, and a force of 10kN using a Zwick Roel universal testing machine. And qualitative visual assessment of fracture patterns was done with scanning electron microscopy. Statistical analysis included two-sample t-test, one- and two-way ANOVA, post hoc Tukey’s test Wilcoxon rank-sum test, Kruskal-Wallis test, and Friedman’s two-way nonparametric ANOVA when appropriate (alpha=0.05).
description: Results: Mean length and width dimensions were significantly higher in the 0◦ direction for permanent resin compared to temporary resin (p<0.001). For both materials, 0◦ and 45◦ showed better accuracy than 90◦. Permanent resins showed significantly higher flexural strength than temporary resins in all print directions(P<0.001). Mean maximum depth and volume loss of permanent resin was significantly lower than that of temporary resin (p<0.05) after wear challenge, 45◦ showed more wear pattern for both resins. 45◦ also showed significantly higher mean fracture resistance than 0◦ and 90◦. Failure mode III and mode I were associated with permanent and temporary respectively.
description: Conclusion: Accuracy and mechanical properties were influenced by a change in the print direction and orientation in the permanent and temporary crown resin with 45◦ showing favorable results for the parameters tested. Significant interactions between resin type, and print direction on accuracy and mechanical properties were noted.
Availability-constrained shared backup path protection for GMPLS-based spare capacity reconfiguration
Creators: name: Guo, Qi
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2006
Subjects: subject: Engineering, Electronics and Electrical.

description: Shared Backup Path Protection (SBPP) has been widely studied in the Generalized Multi-Protocol Label Switching (GMPLS) networks due to its efficient spare capacity sharing and flexibility in service provisioning. This thesis presents two policy-based models for evaluating the end-to-end (E2E) availability of an SBPP connection by assuming that no more than two simultaneous failures could possibly occur in the network. To minimize the redundancy while meeting the E2E availability requirement, a new parameter is defined for each connection, called protection level, which creates a framework of partial restoration from any unexpected failure. Based on the proposed availability model, two novel policy-based Linear Programming (LP) formulations are introduced - called failure-dependent and failure-independent policies, which aim to reconfigure the spare capacity allocation for dynamic provisioning of SBPP connections. Extensive simulations are conducted to validate the proposed availability model and demonstrate the effectiveness of the spare capacity reconfiguration architecture. The proposed availability-aware spare capacity reconfiguration (SCR) approaches are then implemented on top of a well known survivable routing scheme - Successive Survivable Routing (SSR), where the spare capacity saving ratio is taken as the performance measure. We show that the proposed SCR framework is an effective approach for achieving the GMPLS-based recovery in packet-switched networks.
Australian higher education institutions transforming the future of teaching and learning through 3d virtual worlds
Creators: name: Gregory, Sue
name: Lee, Mark J W
name: Ellis, Allan
name: Gregory, Brent
name: Wood, Denise
name: Hillier, Mathew
name: Campbell, Matthew
name: Grenfell, Jenny
name: Pace, Steven
name: Farley, Helen
name: Thomas, Angela
name: Cram, Andrew
name: Sukunesan, Suku
name: Smith, Kerrie
name: Hay, Lyn
name: Warren, Ian
name: Grant, Scott
name: Kennedy-Clark, Shannon
name: Craven, David
name: Dreher, Heinz
name: Matthews, Carol
name: Murdoch, Deborah
name: Mckeown, Lindy
Publisher: name: Swinburne
Year: 2024

description: What are educators' motivations for using virtual worlds with their students? Are they using them to support the teaching of professions and if this is the case, do they introduce virtual worlds into the curriculum to develop and/or expand students' professional learning networks? Are they using virtual worlds to transform their teaching and learning? In recognition of the exciting opportunities that virtual worlds present for higher education, the DEHub Virtual Worlds Working Group was formed. It is made up of Australian university academics who are investigating the role that virtual worlds will play in the future of education and actively implementing the technology within their own teaching practice and curricula. This paper presents a typology for teaching and learning in 3D virtual worlds and applies the typology to a series of case studies based on the ways in which academics and their institutions are exploiting the power of virtual worlds for diverse purposes ranging from business scenarios and virtual excursions to role-play, experimentation and language development. The case studies offer insight into the ways in which institutions are transforming their teaching for an unknown future through innovative teaching and learning in virtual worlds. The paper demonstrates how virtual worlds enable low cost alternatives to existing pedagogies as well as creating opportunities for rich, immersive and authentic activities that would otherwise not be feasible or maybe not even be possible. Through the use of virtual worlds, teaching and learning can be transformed to cater for an unknown future.
The social construction of 'bad girls' as a social problem: A comparison of the claims-making activity of social problems experts and print journalists.
Creators: name: Kirst, Maritt.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1998
Subjects: subject: Sociology, Theory and Methods.

description: This study examines the social construction of girls' violence and gang involvement as a social problem by print journalists and social problems experts (namely social scientists) as claims-making groups. The issue of girls' violence and gang involvement has recently received great attention in the public eye due to increased exposure in the news media. However, social scientists and other experts have also been at the fore of claims-making about this issue. As a result of varying interests, this issue has been constructed by two sets of claims-makers (print journalists as media representatives, and social problems experts) in two different ways. This study will also discuss the relationship between print journalists and social problems experts, as the media and social problems experts are not mutually exclusive groups: the claims of experts are presented in both media publications and professional fora and are conveyed differently in terms of their content and context. This study reveals the different constructions of girls' violence and gang involvement as a social problem, and the interests and agendas which influence print media claims-making and the claims-making by social problems experts in professional fora. This research also explores the relationship between print media and expert claimants, the impact these groups have on public perception and social policy, and the implications differing constructions have for young offenders in Canada. (Abstract shortened by UMI.)