cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Chandra reveals a black-hole X-ray binary within the ultraluminous supernova remnant MF 16
Creators: name: Roberts, T. P.
name: Colbert, E. J. M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present evidence, based on Chandra ACIS-S observations of the nearby spiral galaxy NGC 6946, that the extraodinary X-ray luminosity of the MF 16 supernova remnant actually arises in a black-hole X-ray binary. This conclusion is drawn from the point-like nature of the X-ray source, its X-ray spectrum closely resembling the spectrum of other ultraluminous X-ray sources thought to be black-hole X-ray binary systems, and the detection of rapid hard X-ray variability from the source. We briefly discuss the nature of the hard X-ray variability, and the origin of the extreme radio and optical luminosity of MF 16 in light of this identification.
description: 6 pages, 2 figures, accepted for publication in MNRAS
An analysis and defense of an experimental program in art
Creators: name: Stewart, Jr., Marion Barton
Publisher: name: American University
Year: 2023

description: The task of the creative artist is becoming less and less to portray the physical universe in terms of purely descriptive symbols, but rather to discover and exploit the basic principles underlying the functions of art and nature, and to regroup them in such a way that meaningful ideas will be presented to help the artist and observer to become more acutely aware of the nature of reality. This shift in emphasis is placing upon the artist the role of explorer and researcher.
A Figure Painting in Tempera Emulsion
Creators: name: Marsh, Allan T.
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 3601
subject: Art history, theory and criticism
classificationCode: 3606
subject: Visual arts

description: This painting and paper have presented many challenges to me and I feel that in working them out I have learned a considerable amount. Many colleges and universities still abide by the old rules that in order for a painter to obtain a graduate degree he must spend hundreds of hours away from his painting rewriting what others have written about art history, I heartily endorse the new painting thesis program of American University and hope that this system will be continued. The greatest source material for this work was found in galleries rather than books. The original paintings in the National Gallery, the Phillips Collection, and the Corcoran Gallery were of great service to me. I wish to express my appreciation to Miss Sarah Baker, Mr. Robert F. Gates, and Mr. Ben L. Summerford for their interest in my development as a creative painter, and for their assistance with this project.
An analysis and defense of an experimental program in art
Creators: name: Stewart, Jr., Marion Barton
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 3601
subject: Art history, theory and criticism

description: The task of the creative artist is becoming less and less to portray the physical universe in terms of purely descriptive symbols, but rather to discover and exploit the basic principles underlying the functions of art and nature, and to regroup them in such a way that meaningful ideas will be presented to help the artist and observer to become more acutely aware of the nature of reality. This shift in emphasis is placing upon the artist the role of explorer and researcher.
Estimates for Disk and Ejecta Masses Produced in Compact Binary Mergers
Creators: name: Krüger, C. J.
name: Foucart, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: There is irresistible observational evidence that binary systems of compact objects with at least one neutron star are progenitors of short gamma-ray bursts, as well as a production site for r-process elements, at least when some matter is ejected by the merger and an accretion disk is formed. The recent observations of gravitational waves in conjunction with electromagnetic counterparts fuel the need for models predicting the outcome of a given merger and the properties of the associated matter outflows as a function of the initial parameters of the binary. In this manuscript, we provide updated fitting formulae that estimate the disk mass for double neutron star binaries and ejecta masses for black hole-neutron star and double neutron star binaries, fitted to the results of numerical simulations. Our proposed fitting formulae improve on existing models by aiming for analytical simplicity, by covering a larger region of parameter space, and by accounting for regions of parameter space not covered by numerical simulations but with physically manifest merger outcomes.
description: 11 pages, 5 figures, Fig. 5 revised
Universal level-spacing distribution in quantum systems
Creators: name: Podolskiy, Viktor A.
name: Narimanov, Evgenii E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Classical counterparts of a great variety of quantum systems, from atomic physics to quantum wells and quantum dots, to optical, microwave, and acoustic resonators exhibit partially chaotic dynamics. Since it is often impossible to measure the temporal dynamics in qunatum systems, the main and probably the most dramatic manifestation of classical chaos in their phase space is seen in the distribution of spacing between the neighboring energy levels. While the mechanism leading to the onset of chaotic dynamics is different in every system, the level spacing distribution obeys the universal law, changing from Poissonian in the completely integrable systems to Wigner in completely chaotic ones.
description: 4 figures; submitted to Nature
title: Large-scale forcing of coastal communities.
Creators: name: Shelmerdine, Richard
Publisher: name: The Open University
Year: 2007

description: Two contrasting areas of pelagic primary productivity (PPP) were noted in western Scotland, the Clyde (high PPP) and the west coast (low PPP). It was hypothesised that increased PPP would have a direct bottom-up influence on intertidal community structure with the Clyde expected to be dominated by filter feeders with potentially greater larval recruitment, increased density, faster growth and larger maximum sizes.

The study was divided into five sections examining community structure, growth rates, predation and grazing pressures, effects of wave exposure, and stable isotope analysis. Individual species tended to vary between sites within lochs rather than between the two regions.

Growth rates of the predator Nucella were found to follow peaks in Semibalanus size, rather than Mytilus, with increased growth on the west coast. An increased density of the grazer, Littorina, at a site had an increased effect on their growth rate although dense localised patches within sites were observed where growth rates were lowest. Mussel size classes were found to have different growth rates, most probably due to differing factors such as predation, food availability, and reproduction.

Predation and grazing effects differed between regions. Barnacle cover was shown to be affected by both Nucella and Littorina although the latter may have been an indirect affect due to the biofilm cover which was greater in the Clyde. Predation rates of mussels were found to be greater on the west coast which was most probably due to a change in diet from barnacles to mussels. Mussel shell length and biomass declined with increasing wave exposure throughout western Scotland with the potential for factors varying on small scales to be more important in structuring mussel populations. This was evident when testing for differences in stable isotopes of mussels which suggested site specific variation due to increased freshwater input. The results of this study showed that small scale, local factors are as important, if not more, as regional differences in structuring communities. PPP is important, but only for a subset of the community.
The Role of Polycyclic Aromatic Hydrocarbons in Ultraviolet Extinction. I. Probing small molecular PAHs
Creators: name: Clayton, Geoffrey C.
name: Gordon, Karl D.
name: Witt, Adolf N.
name: Allamandola, L. J.
name: Martin, Peter G.
name: Salama, F.
name: Snow, T. P.
name: Whittet, D. C. B.
name: Wolff, Michael J.
name: Smith, Tracy L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have obtained new STIS/HST spectra to search for structure in the ultraviolet interstellar extinction curve, with particular emphasis on a search for absorption features produced by polycyclic aromatic hydrocarbons (PAHs). The presence of these molecules in the interstellar medium has been postulated to explain the infrared emission features seen in the 3-13 $μ$m spectra of numerous sources. UV spectra are uniquely capable of identifying specific PAH molecules. We obtained high S/N UV spectra of stars which are significantly more reddened than those observed in previous studies. These data put limits on the role of small (30-50 carbon atoms) PAHs in UV extinction and call for further observations to probe the role of larger PAHs. PAHs are of importance because of their ubiquity and high abundance inferred from the infrared data and also because they may link the molecular and dust phases of the interstellar medium. A presence or absence of ultraviolet absorption bands due to PAHs could be a definitive test of this hypothesis. We should be able to detect a 20 Åwide feature down to a 3$σ$ limit of $\sim$0.02 A$_V$. No such absorption features are seen other than the well-known 2175 Åbump.
description: 16 pages, 3 figure, ApJ in press
MALCOLM LOWRY, GEORGE ORWELL AND GRAHAM GREENE: THREE VIEWS OF FASCISM
Creators: name: Finnegan, James Joseph
Publisher: name: American University
Year: 2023

description: This study of The Ministry of Fear, Under the Volcano and Coming up for Air is an analysis of the way three writers confront the threat of World War Two and the possibility of a totalitarian future. By examing each of the protagonist's wish to return to what he thinks of as an ideal age of innocence and peace, I show how the abstractions they cherish are transformed by the historical moment and are now in the guise of an immediate and particular stranger called fascism. In George Orwell's Coming Up for Air, I explore the way George Bowling's retreat to a frozen past where societal laws are seen as harmonious with natural laws inevitably leads to a conflation of man-made conventions and the natural process. This merging of the two worlds creates an atmosphere in which people find themselves in a position where they cannot doubt how to act. They believe that since the natural world is unalterable and guided by supernatural powers behind the scenes, then the societal must be so governed also. The second part of this study is concerned with Malcolm Lowry's Under the Volcano. Though Geoffrey Firmin also emphasizes magic or supernatural powers rather than personal responsibility, my analysis of this work stresses Lowry's and his main character's tendency to think in abstractions that blur distinctions. This tendency creates a method of thinking that is essentialistic rather than nominalistic, and overlooks the way essences are transformed when they are particularized. In the conclusion of this study, I discuss Graham Greene's The Ministry of Fear. By showing how Greene and Orwell opt for the complexity of character instead of a closed form, I present a link between these writers' techniques and their expressed need to deemphasize concepts and forms in order to stress character and individuality. At other historical moments, such as when individualism is transformed into hedonism, there may be a need to portray the individual as less important than the group. But this study finally states that if literature has a function amongst other disciplines--many of which tend to rely on concepts, theories and types--it is to affirm life and the contingency of character. This may appear obvious, but as Orwell, Greene and Lowry discover, restating the obvious is a never-ending task.
Palaeacaroidea Grandjean 1932
Creators: name: Norton, Roy A.
name: Ermilov, Sergey G.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes

description: Superfamily Palaeacaroidea
 Family Palaeacaridae
 Paleacarus hystricinus Trägårdh, 1932
 Larva: Grandjean 1949 (DsP); Grandjean 1954b (Ds, FB, FLg, LSF)
 Protonymph: Grandjean 1949 (DsP); Grandjean 1954b (Ds, FB, FLg, LSF)
 Deutonymph: Grandjean 1949 (DsP); Grandjean 1954b (Ds, FB, LSF)
 Tritonymph: Grandjean 1949 (DsP); Grandjean 1954b (Ds, FB, LSF)
 Paleacarus kamenskii (Zachvatkin, 1945)
 Larva: Shereef 1971b (DT, Cul, Fd); Shereef 1972 (DT, Cul, Fd)
 Protonymph: Shereef 1971b (DT, Cul, Fd); Shereef 1972 (DT, Cul, Fd)
 Deutonymph: Shereef 1971b (DT, Cul, Fd); Shereef 1972 (DT, Cul, Fd)
 Tritonymph: Shereef 1971b (DT, Cul, Fd); Shereef 1972 (DT, Cul, Fd)
description: Published as part of Norton, Roy A. & Ermilov, Sergey G., 2014, Catalogue and historical overview of juvenile instars of oribatid mites (Acari: Oribatida), pp. 1-132 in Zootaxa 3833 (1) on page 12, DOI: 10.11646/zootaxa.3833.1.1, http://zenodo.org/record/5122134
Ground state phase diagram of dipolar-octupolar pyrochlores
Creators: name: Benton, Owen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The dipolar-octupolar pyrochlore oxides R$_2$M$_2$O$_7$ (R=Ce, Sm, Nd) represent an important opportunity in the search for three dimensional Quantum Spin Liquid (QSL) ground states. Their low energy physics is governed by an alluringly simple XYZ Hamiltonian, enabling theoretical description with only a small number of free parameters. Meanwhile, recent experiments on Ce pyrochlores strongly suggest QSL physics. Motivated by this, we present here a complete analysis of the ground state phase diagram of dipolar-octupolar pyrochlores. Combining cluster mean field theory, variational arguments and exact diagonalization we find multiple U(1) QSL phases which together occupy a large fraction of the parameter space. These results give a comprehensive picture of the ground state physics of an important class of QSL candidates and support the possibility of a $U(1)$ QSL ground state in Ce$_2$Zr$_2$O$_7$ and Ce$_2$Sn$_2$O$_7$.
The Role of West German Political Parties, Foreign Policy Elites, and Public Opinion in Opposition to West German Remilitarization, 1948-1955
Creators: name: Tachon, Darcelle D.
Publisher: name: American University
Year: 2023

description: The study examines the policy positions of West German foreign policy elites in opposition to rearmament during the period 1948 to 1955. It also determines to what degree the foreign policy elites cooperated with one another beginning in 1949 in countering the Adenauer government's pro-rearmament stance.The methodology used in this study has been comparative in nature. The study considered how effective each organization was, relative to other organizations with similar aims, in convincing the West German public of its message.There was little cooperation between the elites in opposing official West German policy, although several attempts were made by those in opposition. A diversity in motives and the inability to coalesce in opposing government policy resulted in a lack of political impact. The rapid economic recovery of West Germany was also a factor in the ineffectiveness of the opposition.
title: Characterisation of the naturally-acquired antibody response to the surface of Plasmodium falciparum infected erythrocytes.
Creators: name: Mackintosh, Claire Louise
Publisher: name: The Open University
Year: 2006

description: The surface of P. falciparum-infected erythrocytes is modified by the insertion of immunogenic parasite-encoded proteins; the most extensively studied family is Plasmodium falciparum erythrocyte membrane protein 1, (PfEMP1). PfEMP1 undergoes clonal antigenic variation and is responsible for mediating cytoadherence of infected erythrocytes within the microvasculature, characteristics underpinning the virulence associated with Plasmodium falciparum infection. Protection against disease following exposure to a parasite displaying a particular variant of PfEMP1 is associated with agglutinating antibodies against that variant, antibodies associated with protection. However, the role of cross-reactive responses to heterologous isolates in protection from subsequent disease remains poorly understood. The target and epitope specificity of both the variant specific protective response and any cross-reactive antibody response is unknown.

 Individuals from two areas with differing transmission characteristics were screened at the end of a low transmission season for recognition of a panel of laboratory and clinical isolates. Using in particular an isolate selected to express one specific variant of PfEMP1, A4 PfEMP1, on the surface of the host erythrocyte, the relationship between the presence of asymptomatic parasite carriage and cross-reactive antibody responses was established. Subsequently the domain and interdomain regions of A4 PfBMP1 were cloned and expressed as recombinant proteins and used to screen the same individuals in an attempt to identify the targets for these measured responses. This study demonstrated differences in antibody acquisition between domains, individuals and areas. In a longitudinal study, the interaction between having detectable parasites and the ability to recognise the surface of erythrocytes infected with four different parasite isolates led to the identification of a susceptible group of children responsible for the burden of clinical malaria in this area.
The key-lock mechanism in nematic colloidal dispersions
Creators: name: Silvestre, N. M.
name: Patricio, P.
name: da Gama, M. M. Telo
Publisher: name: arXiv
Year: 2003
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We consider the interaction of two-dimensional colloids, in nematic liquid crystals, with walls or geometrical boundaries. The interactions between colloidal disks and flat walls, with homeotropic boundary conditions, are always repulsive. The repulsions may be turned into strong attractions at structured or sculpted walls with cavities, matching closely the shape and size of the colloids. This key-lock type of interaction is analyzed in detail for spherocylindrical cavities of various length to breath ratios, by minimizing the Landau-de Gennes free energy functional of the orientational order parameter. We find that the attractions occur only for walls with cavities within a small range of the colloidal size and for a narrow range of orientations around the wall's symmetry axis.
description: 9 figures. Resubmitted to PRE
Examining parent's perspectives on swimming lessons for children with autism spectrum disorders
Creators: name: Lobo, Larissa
name: Kerpan, Serene
Publisher: name: The Health & Fitness Journal of Canada
Year: 2022

description: Background: Swimming is a favourable activity for many children with autism spectrum disorders (ASD) that can increase physical activity (PA); this is important because children with ASD often have lower rates of PA. However, children with ASD experience higher risk of drowning; 91% of U.S. deaths for children age 0-14 with ASD are attributed to drowning. Research indicates adapted swimming lessons can improve aquatic and social skill acquisition for children with ASD. Information is missing on the real-world efficacy of these lessons. Examining parents’ beliefs and perceived outcomes is important because many children with ASD struggle with generalization and parents can provide insights into swimming lesson outcomes. Purpose: The purpose of this research was to examine the perspectives of parents of children with ASD regarding their child’s swimming lessons. Methods: Through phenomenological qualitative methodology, semi-structured individual interviews were used with 12 parents. Results: Themes included making lessons accessible, focus on skills and safety, teach the teacher, and the impact on pride and independence. Findings suggest participation in swimming lessons can cultivate numerous positive outcomes and the skills acquired in swimming lessons may transfer beyond the swimming lesson environment. Participants also identified numerous barriers to accessing aquatic programming for children with ASD and identified many areas for program improvement. Conclusion: Given the increasing rates of ASD, coupled with the drowning rates for children with ASD swimming lessons should be considered a public health intervention of importance. The findings from this work may help inform swimming lessons for children with ASD.
description: The Health & Fitness Journal of Canada, Vol. 14 No. 3 (2021): Proceedings from the 8th International Society for Physical Activity and Health Congress
MALCOLM LOWRY, GEORGE ORWELL AND GRAHAM GREENE: THREE VIEWS OF FASCISM
Creators: name: Finnegan, James Joseph
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 4705
subject: Literary studies

description: This study of The Ministry of Fear, Under the Volcano and Coming up for Air is an analysis of the way three writers confront the threat of World War Two and the possibility of a totalitarian future. By examing each of the protagonist's wish to return to what he thinks of as an ideal age of innocence and peace, I show how the abstractions they cherish are transformed by the historical moment and are now in the guise of an immediate and particular stranger called fascism. In George Orwell's Coming Up for Air, I explore the way George Bowling's retreat to a frozen past where societal laws are seen as harmonious with natural laws inevitably leads to a conflation of man-made conventions and the natural process. This merging of the two worlds creates an atmosphere in which people find themselves in a position where they cannot doubt how to act. They believe that since the natural world is unalterable and guided by supernatural powers behind the scenes, then the societal must be so governed also. The second part of this study is concerned with Malcolm Lowry's Under the Volcano. Though Geoffrey Firmin also emphasizes magic or supernatural powers rather than personal responsibility, my analysis of this work stresses Lowry's and his main character's tendency to think in abstractions that blur distinctions. This tendency creates a method of thinking that is essentialistic rather than nominalistic, and overlooks the way essences are transformed when they are particularized. In the conclusion of this study, I discuss Graham Greene's The Ministry of Fear. By showing how Greene and Orwell opt for the complexity of character instead of a closed form, I present a link between these writers' techniques and their expressed need to deemphasize concepts and forms in order to stress character and individuality. At other historical moments, such as when individualism is transformed into hedonism, there may be a need to portray the individual as less important than the group. But this study finally states that if literature has a function amongst other disciplines--many of which tend to rely on concepts, theories and types--it is to affirm life and the contingency of character. This may appear obvious, but as Orwell, Greene and Lowry discover, restating the obvious is a never-ending task.
Pterochthoniidae Grandjean 1950
Creators: name: Norton, Roy A.
name: Ermilov, Sergey G.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Pterochthoniidae

description: Family Pterochthoniidae   Pterochthonius angelus (Berlese, 1910)
 Deutonymph: Grandjean 1950c (Ds, FB, FLg)
 Tritonymph: Grandjean 1950c (Ds, FB)
description: Published as part of Norton, Roy A. & Ermilov, Sergey G., 2014, Catalogue and historical overview of juvenile instars of oribatid mites (Acari: Oribatida), pp. 1-132 in Zootaxa 3833 (1) on page 12, DOI: 10.11646/zootaxa.3833.1.1, http://zenodo.org/record/5122134
Ageing in the critical contact process: a Monte Carlo study
Creators: name: Ramasco, Jose J.
name: Henkel, Malte
name: Santos, Maria Augusta
name: Santos, Constantino A. da Silva
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The long-time dynamics of the critical contact process which is brought suddenly out of an uncorrelated initial state undergoes ageing in close analogy with quenched magnetic systems. In particular, we show through Monte Carlo simulations in one and two dimensions and through mean-field theory that time-translation invariance is broken and that dynamical scaling holds. We find that the autocorrelation and autoresponse exponents lambda_{Gamma} and lambda_R are equal but, in contrast to systems relaxing to equilibrium, the ageing exponents a and b are distinct. A recent proposal to define a non-equilibrium temperature through the short-time limit of the fluctuation-dissipation ratio is therefore not applicable.
description: 18 pages, 7 figures, Latex2e with IOP macros; final form
Corridor Redesign of Chancellor Boulevard
Creators: name: Gillis, Gregg
name: Hamersley, Jackson
name: Hardie, Quinn
name: Houston, Damon
name: Mason, Erica
name: Naseri, Sina
name: Power, Sarah
Publisher: name: The University of British Columbia
Year: 2018

description: Empire Engineering has prepared a design report for the redesign of Chancellor Boulevard from Drummond Drive to Acadia Road. Several key issues have been identified that have been addressed in the redesign. Due to insufficient traffic calming measures and the current road configuration, typical vehicle speeds in the project area exceed the posted speed limit of 60 km/h. The poor condition of the existing multi-purpose path and absence of safe pedestrian crossings limits pedestrian and cyclist accessibility and has resulted in these users taking alternative routes to access the University of British Columbia. Furthermore, the road is located near salmon-bearing creeks and sensitive ecological areas within Pacific Spirit Regional Park. Stakeholders have been considered throughout the project through consultation discussed in the Preliminary Design Report. The new road design includes one vehicle travel lane of a reduced width and designated bicycle lane in each direction, separated by rumble strips. This “road diet” approach will reduce travel speeds and also decrease the total impervious surface within the project area. To address additional forms of safe passage across the corridor, a precast concrete tunnel at the Spanish Trail head will be installed that provides space for both pedestrian and cyclists. This underpass will be equipped with accessible ramps, stairs, and lighting. Additionally, a marked crosswalk at the Pioneer Trail head will be added and equipped with a semi-actuated pedestrian crossing light. Pedestrians will also be able to access an improved and repaved multi-purpose trail along Chancellor Boulevard. Through the process of an Environmental Assessment, plans have been made to mitigate potential environmental issues that may arise during construction and operation. As such, a detailed Stormwater Management Plan has been implemented to increase the infiltration of stormwater into the natural groundwater. Empire Engineering estimates a cost of $6,146,000 for the remainder of the design and construction of this project. Construction is expected to be completed in 13 weeks, starting May 2018. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Prevalence and correlates of excessive recreational screen time among Colombian children and adolescents
Creators: name: González, Silvia
name: Sarmiento, Olga
name: Flórez, Alberto
name: Katzmarzyk, Peter
name: Chaput, Jean-Philippe
name: Tremblay, Mark
Publisher: name: The Health & Fitness Journal of Canada
Year: 2022

description: Background: Excessive recreational screen time (RST) is associated with detrimental effects for physical, psychological and cognitive development. Purpose: This study aimed to describe the prevalence of RST time among Colombian preschoolers, children and adolescents and explore associated factors within a socioecological framework. Methods: We analyzed data from the Colombian National Survey of Nutrition 2015. The sample included 4,503 preschoolers, 5,333 school-aged children and 6,623 adolescents. Excessive RST was defined as engaging in >1 hour of RST among children under 5 years and >2 hours of RST among 5-year-olds and older. Poisson regression models with robust variance were conducted to estimate prevalence ratios and determine correlates of excessive RST. Results: Fifty percent of preschoolers, 61% of school-aged children and 73% of adolescents in Colombia had excessive RST. Positive associations were observed with availability of TV in the child’s bedroom, availability of video games at home, and eating while using screens. A negative association with rural area was observed for all age groups. Conclusions: The majority of Colombian children and adolescents have excessive RST. Younger preschoolers, older school-aged children, wealthiest children and those from urban areas should be targeted by interventions to decrease RST. These interventions should promote limiting the availability of electronic devices in children’s bedrooms and not eating in front of screens. Funding: SAG was funded by the Government of Ontario and the University of Ottawa through the Ontario Trillium Scholarship for doctoral studies.
description: The Health & Fitness Journal of Canada, Vol. 14 No. 3 (2021): Proceedings from the 8th International Society for Physical Activity and Health Congress
Exercise for mental health
Creators: name: Jacquart, Jolene Ann
name: 0000-0002-3034-8214
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: Exercise
Mental health
Depression
Anxiety

description: With its far reaching physical and mental health benefits, exercise has the potential of being a strong transdiagnostic treatment tool in the arsenal of a clinician. This dissertation addresses how exercise may facilitate treatment goals by intervening on key mechanisms underlying the maintenance and amelioration of anxiety and depressed mood. This dissertation details three studies designed to introduce and generate further lines of inquiry related to the specific application of exercise in a clinical setting: 1) What are the mechanisms underlying the mental health benefits of exercise? 2) Can specific mental health benefits of exercise be harnessed to broadly facilitate the process of psychotherapy? And 3) What dose of exercise is required to obtain specific treatment outcomes? Specifically, the first study investigated whether exercise can serve as a method to learn arousal reappraisal techniques, thereby improving an individual’s ability to manage stressful events. The results from the first study provided initial evidence that exercise can facilitate learning arousal reappraisal techniques and this learning may help reduce stress reactivity. The second study examined the efficacy of acute aerobic exercise to augment exposure therapy for acrophobia. The results from the second study provided no evidence that exercise immediately prior to an exposure therapy session facilitates exposure therapy outcomes. The final study examined how attendance relates to the efficacy of an exercise-aided smoking cessation intervention for individuals with high anxiety sensitivity. The results from the third study suggested early treatment discontinuation did not impact the efficacy of an exercise-aided smoking cessation intervention. The studies reported on in this dissertation add to an ever-growing area of research regarding the application of exercise for improving mental health. By continuing to pursue and expand these lines of research, exercise intervention parameters may be optimized to achieve specific mental health benefits. Equipped with such knowledge, exercise can become a widely available, easily accessible treatment method many clinicians could offer their patients. Having accessible a range of strategies that engage therapeutic targets allows clinicians to attend to patient preferences and needs when seeking to ameliorate mental health disorders.
Hypochthonioidea A.Berlese 1910
Creators: name: Norton, Roy A.
name: Ermilov, Sergey G.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes

description: Superfamily Hypochthonioidea
 Family Eniochthoniidae
 Eniochthonius mahunkai Norton & Behan-Pelletier, 2007
 Larva: Norton & Behan-Pelletier 2007 (Ds, FB, FLg, LSA)
 Protonymph: Norton & Behan-Pelletier 2007 (Ds, FLg, LSA)
 Deutonymph: Norton & Behan-Pelletier 2007 (Ds, LSA)
 Tritonymph: Norton & Behan-Pelletier 2007 (Ds, FB, LSA)
 Eniochthonius minutissimus (Berlese, 1904)
 Larva: Grandjean 1933a (DsP, FB); Grandjean 1934a (DsP, FB); Grandjean 1934g (DsP); Grandjean 1949 (DsP); Seniczak et al. 2009b (Ds, FB)
 Protonymph: Grandjean 1933a (DsP, FB); Grandjean 1934a (DsP, FB); Grandjean 1934g (DsP); Grandjean 1942 (LSF); Grandjean 1949 (DsP); Seniczak et al. 2009b (Ds)
 Deutonymph: Grandjean 1933a (DsP, FB); Grandjean 1934g (DsP); Grandjean 1942 (LSF); Grandjean 1949 (DsP); Seniczak et al. 2009b (Ds)
 Tritonymph: Grandjean 1933a (DsP, FB); Grandjean 1934g (DsP); Grandjean 1942 (LSF); Grandjean 1949 (DsP); Seniczak et al. 2009b (Ds, FB, LSA)
 Nymph: Michael 1888 (Ds, FB)
 N.B. As Hypochthonius palidulus Koch (sic) in Michael (1888)
description: Published as part of Norton, Roy A. & Ermilov, Sergey G., 2014, Catalogue and historical overview of juvenile instars of oribatid mites (Acari: Oribatida), pp. 1-132 in Zootaxa 3833 (1) on pages 13-14, DOI: 10.11646/zootaxa.3833.1.1, http://zenodo.org/record/5122134
A High-Resolution Study of Nonthermal Radio and X-Ray Emission from SNR G347.3-0.5
Creators: name: Lazendic, J. S.
name: Slane, P. O.
name: Gaensler, B. M.
name: Reynolds, S. P.
name: Plucinsky, P. P.
name: Hughes, J. P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: G347.3-0.5 is one of three shell-type supernova remnants in the Galaxy whose X-ray spectrum is dominated by nonthermal emission. This puts G347.3-0.5 in the small, but growing class of SNRs for which the X-ray emission reveals directly the presence of extremely energetic electrons accelerated by the SNR shock. We have obtained new high-resolution X-ray and radio data on G347.3-0.5 using the Chandra X-ray Observatory and the Australia Telescope Compact Array (ATCA) respectively. The bright northwestern peak of the SNR seen in ROSAT and ASCA images is resolved with Chandra into bright filaments and fainter diffuse emission. These features show good correspondence with the radio morphological structure, providing strong evidence that the same population of electrons is responsible for the synchrotron emission in both bands in this part of the remnant. Spectral index information from both observations is presented. We found significant difference in photon index value between bright and faint regions of the SNR shell. Spectral properties of these regions support the notion that efficient particle acceleration is occurring in the bright SNR filaments. We report the detection of linear radio polarization towards the SNR, which is most ordered at the northwestern shell where particle acceleration is presumably occurring. Using our new Chandra and ATCA data we model the broad-band emission from G347.3-0.5 with the synchrotron and inverse Compton mechanisms and discuss the conditions under which this is a plausible scenario.
description: 24 pages, 10 figures, accepted for publication in ApJ
Motion of finite-size spheres released in a turbulent boundary layer
Creators: name: Tee, Yi Hui
name: Barros, Diogo
name: Longmire, Ellen K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Individual magnetic wax spheres with specific gravities of 1.006, 1.054 and 1.152 were released from rest on a smooth wall in water at friction Reynolds numbers, Re_τ=680 and 1320 (d^+ = 58 and 122 viscous units, respectively). Three-dimensional tracking was conducted to understand the effect of turbulence and wall friction on sphere motions. Spheres subjected to sufficient mean shear initially lifted off of the wall before descending back towards it. These lifting spheres translated with the fluid above the wall, undergoing saltation or resuspension, with minimal rotation about any axis. By contrast, spheres that did not lift off upon release mainly slid along the wall. These denser spheres lagged the fluid more significantly due to greater wall friction. As they slid downstream, they began to roll forward after which small repeated lift-off events occurred. These spheres also rotated about both the streamwise and wall-normal axes. In all cases, the sphere trajectories were limited to the buffer and logarithmic regions, and all wall collisions were completely inelastic. Sphere streamwise velocities fluctuated up to 20% from the mean value even after the sphere had attained an approximate terminal velocity. In the plane parallel to the wall, the spheres migrated in the spanwise direction about 12% of the streamwise distance traveled suggesting that spanwise forces are important. The variations in sphere kinematics were likely induced by high and low momentum zones in the boundary layer, vortex shedding in the sphere wakes, and wall friction. The repeated lift-offs of the forward rolling denser sphere were attributed to a Magnus lift.
description: Revised manuscript accepted by International Journal of Multiphase Flow on September 13, 2020; 33pages; 10 figures
The Role of West German Political Parties, Foreign Policy Elites, and Public Opinion in Opposition to West German Remilitarization, 1948-1955
Creators: name: Tachon, Darcelle D.
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 4303
subject: Historical studies
classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: The study examines the policy positions of West German foreign policy elites in opposition to rearmament during the period 1948 to 1955. It also determines to what degree the foreign policy elites cooperated with one another beginning in 1949 in countering the Adenauer government's pro-rearmament stance.The methodology used in this study has been comparative in nature. The study considered how effective each organization was, relative to other organizations with similar aims, in convincing the West German public of its message.There was little cooperation between the elites in opposing official West German policy, although several attempts were made by those in opposition. A diversity in motives and the inability to coalesce in opposing government policy resulted in a lack of political impact. The rapid economic recovery of West Germany was also a factor in the ineffectiveness of the opposition.
Adiabatic loading of bosons into optical lattices
Creators: name: Blakie, P. B.
name: Porto, J. V.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The entropy-temperature curves are calculated for non-interacting bosons in a 3D optical lattice and a 2D lattice with transverse harmonic confinement for ranges of depths and filling factors relevant to current experiments. We demonstrate regimes where the atomic sample can be significantly heated or cooled by adiabatically changing the lattice depth. We indicate the critical points for condensation in the presence of a lattice and show that the system can be reversibly condensed by changing the lattice depth. We discuss the effects of interactions on our results and consider non-adiabatic processes.
description: 8 pages, 7 figures
title: Residual stress and fatigue crack growth life prediction in fastener holes cold-worked by uniform indentation in 2024-T351 aluminium alloy
Creators: name: Tan, Jeffrey Meng-Lee
Publisher: name: The Open University
Year: 2007

description: This thesis concerns primarily the residual stress characterisation in fastener holes coldworked by a novel StressWave process, and the prediction of the fatigue crack growth under the influence of such residual stress. Aerospace 2024—T351 aluminium alloy plate of 6.35 mm thickness containing a nominal 06.35 mm hole was used. Using neutron and laboratory X-ray diffraction measurements, a large compressive residual stress was found in StressWave and split-sleeve cold-worked holes. Detailed stress mapping indicates that a StressWave hole contains a highly symmetric residual stress field with a wider compressive region. Conversely, the split-sleeve technique generates a complex asymmetric stress variation through the specimen thickness and around the hole. Independently, a comprehensive finite element study was conducted to reveal the residual stress development associated with the two distinct cold-working techniques at various stages. Favourable agreement was achieved between the experiment and simulations. The deformation mechanism associated with the cold-working process is decisive to the behaviour of the residual stress field created. The symmetric crack growth behaviour observed in StressWave specimens permits a through-thickness crack geometry to be considered. Accordingly, Green’s functions for a single crack and two symmetric cracks originating from the edge of a circular hole were developed. These solutions were verified using weight function and finite element analysis and are therefore appropriate for subsequent study of fatigue crack growth. A theoretical framework was proposed to explicate the interaction of residual stress with the superimposed loading at the crack tip, which was mathematically expounded as a function of stress intensity factor and stress ratio. This analytical framework provides a reasonable correlation between the mean stress and crack closure criteria. As a demonstration, a finite-width plate containing a centre hole with a single crack, with surface residual stress measured by X-Ray diffraction was analysed. It was revealed that for a predictive task, both the mean stress and crack closure definitions necessitate different requirements of material database and parametric definitions. Next, the fatigue testing suggested that the fatigue durability of fastener holes treated by the StressWave method generally outperformed those observed for split-sleeve samples. Prediction according to the unified theory produced encouraging results matching the experimental fatigue crack growth measurement. Detailed analysis showed that suitable parametric calibration and the appropriate use of crack models were imperative to achieve reliable prediction. Future efforts necessary for accuracy of prediction work for StressWave cold-worked holes are discussed.
A covariant model for the decuplet to octet Dalitz decays
Creators: name: Ramalho, G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In the last years it became possible to measure in HADES the dilepton decays of several baryons. The baryon dilepton decays provide information about the electromagnetic structure of the baryons in the timelike region. In the present work, we study the $B^\prime \to e^+ e^- B$ decays, where $B^\prime$ is a baryon decuplet member and $B$ is a baryon octet member. Our calculations are based on the covariant spectator quark model, where the contribution of the quark core is complemented with an $SU(3)$ contribution from the pion cloud. The pion cloud contribution prove to be relevant in the range of study. We present predictions for the $Σ^0 (1385) \to e^+ e^- Λ(1116)$ and $Σ^{+}(1385) \to e^+ e^- Σ^+(1193)$ decays, which may be tested at HADES in a near future. Predictions for the remaining decuplet baryon Dalitz decays are also presented. We conclude that different orders of magnitudes are expected for the baryon decuplet Dalitz decay widths, according to the quark content of the baryons. We also conclude that the dependence of the transition form factors on the square momentum transfer ($q^2$) is important for some transitions.
description: Change of title. Published version. Substantial extension of the first version. 20 pages, 5 figures
The perspectical cloud: A critical reconsideration of Paolo Uccello's St. George and the dragon
Creators: name: Heap, Emily Jane
Publisher: name: American University
Year: 2023

description: In this paper, I will examine how Renaissance painter Paolo Uccello's two versions of St. George and the Dragon demonstrate a radical conception of spatial perspective, one that drastically differed from traditional models of linear perspective advanced by Fillippo Brunelleschi and Leon Battista Alberti. I argue that Uccello's sophisticated weaving of character drama and spatial reality in the second work promotes a new type of humanist painting by allowing an innovative viewer participation without promoting viewer preeminence. It therefore represents a perspectival manifesto for the artist which engages with the narrative as a way of situating the painting in both space and time. Although a legitimate alternative to linear perspective, the latter's historical and cultural significance has obscured our understanding of perspectivally nontraditional works made during the Renaissance.
Carbon Monoxide Depletion in Orion B Molecular Cloud Cores
Creators: name: Savva, D.
name: Little, L. T.
name: Phillips, R. R.
name: Gibb, A. G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have observed several cloud cores in the Orion B (L1630) molecular cloud in the 2-1 transitions of C18O, C17O and 13C18O. We use these data to show that a model where the cores consist of very optically thick C18O clumps cannot explain their relative intensities. There is strong evidence that the C18O is not very optically thick. The CO emission is compared to previous observations of dust continuum emission to deduce apparent molecular abundances. The abundance values depend somewhat on the temperature but relative to `normal abundance' values, the CO appears to be depleted by about a factor of 10 at the core positions. CO condensation on dust grains provides a natural explanation for the apparent depletion both through gas-phase depletion of CO, and through a possible increase in dust emissivity in the cores. The high brightness of HCO+ relative to CO is then naturally accounted for by time-dependent interstellar chemistry starting from `evolved' initial conditions. Theoretical work has shown that condensation of H2O, which destroys HCO+, would allow the HCO+ abundance to increase while that of CO is falling.
description: Accepted for publication in MNRAS. 11 pages, 9 figures. Uses mn2e.cls