cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evolutionary Map of the Universe: Tracing Clusters to High Redshift
Creators: name: Norris, Ray P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Australian SKA Pathfinder (ASKAP) is a new radio-telescope being built in Western Australia. One of the key surveys for which it is being built is EMU (Evolutionary Map of the Universe), which will make a deep (~10 μJy/bm rms) radio continuum survey covering the entire sky as far North as +30\circ. EMU may be compared to the NRAO VLA Sky Survey (NVSS), except that it will have about 45 times the sensitivity, and five times the resolution. EMU will also have much better sensitivity to diffuse emission than previous large surveys, and is expected to produce a large catalogue of relics, tailed galaxies, and haloes, and will increase the number of known clusters by a significant factor. Here we describe the EMU project and its impact on the astrophysics of clusters.
description: Accepted by J. Astrophys. Astr
Thermal and Catalytic Cracking of Athabasca VR and Bitumen
Creators: name: Eshraghian, Afrooz
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Engineering--Chemical
subject: thermal cracking
subject: Athabasca
subject: VR
subject: Bitumen
subject: heavy oil
subject: asphaltenes
subject: catalytic cracking
subject: nanoparticles
subject: in situ
subject: drill cuttings

description: There is a keen interest in upgrading heavy oil in order to meet current and future demand for liquid hydrocarbon fuels coupled with a need to enhance transportability of heavy crudes. In this study, thermal cracking of Athabasca vacuum residue (AVR) was conducted at different operating conditions such as residence time, pressure of the reactor unit, stirring rate, and temperature and different asphaltenes content in presence and absence of alumina nanoparticles (NP) and drill cuttings (DC). A closed reactor system, an autoclave, was employed. Despite the abundance of literature on thermal cracking of heavy crude, very few reports have in fact employed a closed system arrangement. Alumina NP was formulated in situ by thermal decomposition of dispersed aqueous solution of the aluminium nitrate in the heavy oil medium. Its performance was compared with its commercial counterpart. Drill cuttings, a by-product of drilling fluid reconditioning, was also evaluated as a thermal cracking catalyst. The yield of the different fractions, the total energy consumption, the pressure buildup in the reactor, and the oAPI gravity and viscosity of the liquid product were used to evaluate the impact of each parameter. Thermogravimetry analysis (TG/DTA) of the produced asphaltenes and toluene isolubles (TI), high-temperature simulated distillation (HTSD) analysis of the liquid product and gas chromatography (GC) of gaseous product were performed to characterize the different fractions. Results show that the effect of given parameter depends on the asphaltenes content of the feedstock. Removing asphaltenes from the feedstock shifted the reactions to produce more overall asphaltenes. The high surface area provided by dispersed NP and high content of DC in the heavy oil, increased the TI yield, while improved the viscosity of the maltene product. On the other hand, the mechanism of coke inhibition in presence of a specific concentration of DC could be elucidated from scanning electron microscopy (SEM) photographs analysis of the toluene insoluble (TI) fraction.
Implications of the effective one-component analysis of pair correlations in colloidal fluids with polydispersity
Creators: name: Pond, Mark J.
name: Errington, Jeffrey R.
name: Truskett, Thomas M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Partial pair-correlation functions of colloidal suspensions with continuous polydispersity can be challenging to characterize from optical microscopy or computer simulation data due to inadequate sampling. As a result, it is common to adopt an effective one-component description of the structure that ignores the differences between particle types. Unfortunately, whether this kind of simplified description preserves or averages out information important for understanding the behavior of the fluid depends on the degree of polydispersity and can be difficult to assess, especially when the corresponding multicomponent description of the pair correlations is unavailable for comparison. Here, we present a computer simulation study that examines the implications of adopting an effective one-component structural description of a polydisperse fluid. The square-well model that we investigate mimics key aspects of the experimental behavior of suspended colloids with short-range, polymer-mediated attractions. To characterize the partial pair-correlation functions and thermodynamic excess entropy of this system, we introduce a Monte Carlo sampling strategy appropriate for fluids with a large number of pseudo-components. The data from our simulations at high particle concentrations, as well as exact theoretical results for dilute systems, show how qualitatively different trends between structural order and particle attractions emerge from the multicomponent and effective one-component treatments, even with systems characterized by moderate polydispersity. We examine consequences of these differences for excess-entropy based scalings of shear viscosity, and we discuss how use of the multicomponent treatment reveals similarities between the corresponding dynamic scaling behaviors of attractive colloids and liquid water that the effective one-component analysis does not capture.
Remembering Erich Lehmann
Creators: name: van Zwet, Willem R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: History and Overview (math.HO)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: In this paper I shall try to sketch some typical aspects of Erich Lehmann's contributions to statistics through his research, his teaching, his service to the profession and his personality.
description: Published in at http://dx.doi.org/10.1214/11-AOS881 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Picea mariana (Mill.) B.S.P Plantation on Cutover Peatland in Alberta (Canada): Evaluating the Effect of Fertilization and Resulting Carbon Stocks.
Creators: name: Garcia Bravo, Tania
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Engineering--Environmental
subject: Peatland Restoration
subject: Fertilization
subject: Carbon Balance
subject: Black spruce
subject: greenhouse gases

description: Horticultural peat extraction in Canada is mainly performed by vacuum-harvesting, leading to a residual peat soil limited in nutrients and seed bank, which does not allow adequate plant recovery once extraction ceases. Restoration techniques have been designed for the rehabilitation of open bog areas in eastern Canada, but in western Canada many undisturbed peatlands have high cover of forest and the reintroduction of trees should be part of restoration goals. This study is focused on Picea mariana (Mill.) B.S.P (black spruce) plantation. Previous studies have shown that fertilization is needed, but the adequate dose of fertilizer to create the preferred habitat structures remains unclear. Fertilizer dose could also affect the colonization of non-target species such as Betula papyrifera (March.) and consequently microclimate conditions and competition could affect the growth of P. mariana. Results showed that a low dose of fertilizer (8.9 g/ bag) allowed P. mariana to establish while controlling the B. papyrifera colonization. Higher rates of fertilization resulted in dense B. papyrifera communities having a direct effect on photosynthetically active radiation and relative humidity at ground level. Black spruce plantation on cutover peat will also affect the site’s carbon (C) balance. The C balance was estimated using the C stock in biomass of the forest plantation and soil respiration measurement (CO2 and CH4). Although B. papyrifera fixed C though biomass, they also may influence the site hydrology by higher evapotranspiration. After seven years post-restoration, the study site was a source of C due to dry conditions and lack of understory, resulting in peat oxidation. These results can be used to assist in the choice of suitable treatments when the restoration goal is the recovery of ecological functions in cutover peatlands.
การประเมินคุณภาพการจัดบริการลดโรคไม่ติดต่อและการบาดเจ็บภายใต้โครงการจัดการทรัพยากรนำเข้าลดเสี่ยงลดโรคไม่ติดต่อ ปีงบประมาณ 2551
Creators: name: พรรณี ทิพย์ธราดล
Publisher: name: กองนวัตกรรมและวิจัย กรมควบคุมโรค
Year: 2553
Subjects: การจัดการทรัพยากร
โรคไม่ติดต่อ
คุณภาพการจัดบริการ

description: วารสารควบคุมโรค, 36, 2, 67-74
Perfect coupling of light to surface plasmons by coherent absorption
Creators: name: Noh, Heeso
name: Chong, Yidong
name: Stone, A. Douglas
name: Cao, Hui
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We show theoretically that coherent light can be completely absorbed in a two-dimensional or three-dimensional metallic nanostructure by matching the frequency and field pattern of an incident wave to that of a localized surface plasmon resonance. This can be regarded as critical coupling to a nano-plasmonic cavity, or as an extension of the concept of time-reversed laser to the spaser. Light scattering is completely suppressed via impedance matching to the nano-objects, and the energy of incoming wave is fully transferred to surface plasmon oscillations and evanescent electromagnetic fields. Perfect coupling of light to nanostructures has potential applications to nanoscale probing as well as background-free spectroscopy and ultrasensitive detection of environmental changes.
description: 10 pages, 4 figures
Multicomponent seismic analysis from an oil sands field, Alberta, Canada
Creators: name: Gunning, Robert
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Geophysics
subject: FOS: Earth and related environmental sciences

description: Seismic acquisition in the Athabasca Oil Sands increasingly utilizes three-component geophones. However, the vertical component data are generally are processed and interpreted, but the horizontal component data are often left unprocessed. In this project, we demonstrate that there are many geological interpretations that can be improved through joint analysis and inversion of the vertical and radial geophone component data. In this study, the processing of the vertical and radial geophone component data from an Alberta oil sands field yielded good quality PP and PS seismic volumes. The main reservoir interval, the McMurray Formation, was found to have marginal reflection quality on the PP seismic data and good reflection quality on the PS seismic data. Post-stack, pre-stack and joint inversion provided data volumes which, when correlated to geological control and yielded spatial distributions of good reservoir facies.
Conjugated Organic Molecules Containing Imide Functional Groups for Organic Electronics
Creators: name: Hendsbee, Arthur
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Chemistry
subject: Chemistry--Organic
subject: Organic
subject: Semiconductor
subject: Solar Cell

description: This thesis discusses the exploration of new, electron deficient molecular materials that can be used as active components in organic electronics. Chapter one of this thesis will introduce the concept of organic electronics and introduce preliminary design principles. In chapter two, the design and synthesis of an electron deficient small molecule based on a phthalimide-thiophene architecture (M1) is presented and physical properties pertinent to organic electronics are discussed. In chapter three, structurally related derivatives of the phthalimide-thiophene architecture are explored as electron transporting materials, where the number of thiophene units in the molecule as well as the alkyl chain lengths are varied (M2-M5). In chapter four, the M2 architecture is modified by changing the thiophene units for furan units, towards the goal of creating a more sustainable electron transporting material (M6). Chapters five and six discuss the effect of incorporating dye-fragments into the previously discussed molecular architecture to create a range of electron deficient dyes (M7-M17). Finally, in chapter seven, by making use of the combined knowledge obtained from previous work, an N-Annulated perylene diimide material (M18-M19) is presented which can be used as the electron accepting component in high organic solar cells that, depending on the choice of donor material, display power conversion efficiencies of up to 7.6 %.
Meaningfully Becoming and Learning to Be: Graduate Learners' Professional Identity Development in Online Learning Communities
Creators: name: Warrell, Jacqueline Genevieve
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Education--Adult and Continuing
subject: Education--Higher
subject: Education--Technology
subject: adult learning
subject: Higher Education
subject: professional identity development
subject: online ethnography
subject: Educational Technology
subject: communities of practice

description: Graduate study is a period of navigating new and changing professional roles, expectations, and attitudes. It is a time of becoming and learning to be, and for forming a greater sense of self. Opportunities for graduate learners to interact with others in their chosen profession play a role in professional identity development. In today’s digitally connected world, graduate learners are increasingly using online social networking sites (SNSs) to connect and interact with colleagues and to participate in online learning communities. This qualitative study explored graduate learners’ informal learning and professional identity development in online communities. The study examined meaningful connections, interactions, and learning experiences that contribute to graduate learners’ professional identity development. The researcher explored attitudes toward learning on social networking sites (SNS), along with the benefits, barriers, and opportunities not realized in formal educational settings. Drawing on critical elements of ethnography as a methodology, data was collected through field observations, online posts, and participant interviews. The researcher observed and collected posts from five online learning communities on the popular SNSs: Facebook, Twitter, and LinkedIn. Additionally, 11 interviews were conducted with current learners or recently graduated learners of master’s and doctoral programs who participated in the online learning communities. Wenger’s (1998) communities of practice framework (CoPs) provided the theoretical foundation for this study and guided data analysis. Wenger’s broad framework of social learning in CoPs, includes four aspects: meaning, practice, community, and identity. The findings suggested that Facebook Groups, LinkedIn Groups and Twitter Chats are legitimate spaces for informal learning and identity development. Professional identity development was deeply tied to what was meaningfully felt, experienced, and learnt by graduate learners. The study includes an alternate perspective for exploring professional identity development, examining individual experience over task completion. The research suggested that Wenger’s broader framework of social learning (meaning, practice, community, identity) provides a solid foundation for understanding professional identity development in online learning communities. The study offers considerations for the practice of adult education and learning to graduate learners and adult educators about how SNSs may be used to support informal learning and professional identity development.
Mutation discovery in regions of segmental cancer genome amplifications from next generation sequencing of tumours
Creators: name: Anamaria, Crisan
Publisher: name: University of British Columbia
Year: 2010

description: Next generation sequencing has now enabled a cost-effective enumeration of the full mutational complement of a tumour genome - in particular single nucleotide variants (SNVs). However, most current computational and statistical models for analyzing next generation sequencing data do not account for cancer-specific biological properties, including somatic segmental copy number alterations (CNAs), which require special treatment of the data. Here we present CoNAn-SNV (Copy Number Annotated –SNV): a novel algorithm for the inference of single nucleotide variants (SNVs) that overlap copy number alterations. The method is based on modelling the notion that genomic regions of segmental duplication and amplification induce an extended ‘genotype space’ where a subset of genotypes will exhibit heavily skewed allelic distributions in SNVs (and therefore render them undetectable by methods that assume diploidy). CoNAn-SNV introduces the concept of modelling allelic counts from sequencing data using a panel of Binomial mixture models where the number of mixtures for a given locus in the genome is informed by a discrete copy number state given as input. We applied CoNAn-SNV to a previously published whole genome shotgun data set obtained from a lobular breast cancer and show that it is able to detect 24 experimentally revalidated somatic non-synonymous mutations that were not detected using copy number insensitive SNV discovery algorithms. Importantly, ROC analysis shows that the increased sensitivity of CoNAn-SNV does not result in disproportionate loss of specificity. Our results indicate that in genomically unstable tumours, copy number annotation for SNV detection will be critical to fully characterize the mutational landscape of cancer genomes. The Binomial mixture model framework, however, is unable to fully cope with the complexity of tumour sequence data. We explore substituting the Binomial mixture model framework with the Beta-Binomial framework to overcome this limitation. The effectiveness of this substitution is compared against the lobular breast carcinoma and the 30 exon capture data sets all derived from triple negative breast cancers. The performance of Binomial and Beta-Binomial mixture model is evaluated against a cohort of exon capture test cases and we report ROC and f-measures.
Validity of the additivity principle in the weakly asymmetric exclusion process with open boundaries
Creators: name: Gorissen, Mieke
name: Vanderzande, Carlo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The additivity principle allows a calculation of current fluctuations and associated density profiles in large diffusive systems. In order to test its validity in the weakly asymmetric exclusion process with open boundaries, we use a numerical approach based on the density matrix renormalisation. With this technique, we determine the cumulant generating function of the current and the density profile corresponding to atypical currents in finite systems. We find that these converge to those predicted by the additivity principle. No evidence for dynamical phase transitions is found.
description: 5 pages, 5 figures
การบาดเจ็บจากภัยสึนามิ จังหวัดพังงาภายใต้โครงการจัดการทรัพยากรนำเข้าลดเสี่ยงลดโรคไม่ติดต่อ ปีงบประมาณ 2551
Creators: name: เจษฎา ฉายคุณรัฐ
Publisher: name: กองนวัตกรรมและวิจัย กรมควบคุมโรค
Year: 2553
Subjects: สึนามิ
การบาดเจ็บ
จังหวัดพังงา

description: วารสารควบคุมโรค, 36, 2, 75-80
Interactive Evolutionary Modelling by Duplication and Diversification of L-Systems
Creators: name: Burt, Thomas
Publisher: name: Graduate Studies
Year: 2013
Subjects: Computer Science

description: Evolutionary processes are responsible for the wide variety of organic forms seen in the natural world. Digital simulations inspired by these processes can be used to create diverse models for computer imagery purposes. In the case of interactive evolutionary computation (IEC), a modeler affects the resulting forms by guiding evolutionary processes. This guidance can be achieved using very simple interfaces, thus putting IEC in the hands of a broad class of users. In our work we focus on the application of IEC to plant modeling. The individual plants are generated using L-systems. Evolution of L-systems is particularly appealing due to analo- gies that can be drawn between genetic code and L-system productions. Several attempts to evolve L-system-based models have been devised in the past by different authors using the standard operations of genetic algorithms — mutations and crossover — to modify the productions. We have improved on these results by considering a different set of operations — duplication and diversification — as the basis of L-system evolution instead. These oper- ations reflect the widely accepted theory of evolution of genetic material, according to which gene duplication is the first step in smooth transitions from less complex to more complex phenotypes via gradual diversification of redundant genetic material. This thesis investi- ages how this general principle can be adapted to the evolution of L-systems, presents an interactive modeling system based on the resulting theory, and illustrates the results using numerous visual examples.
Explicit receivers for pure-interference bosonic multiple access channels
Creators: name: Wilde, Mark M.
name: Guha, Saikat
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The pure-interference bosonic multiple access channel has two senders and one receiver, such that the senders each communicate with multiple temporal modes of a single spatial mode of light. The channel mixes the input modes from the two users pairwise on a lossless beamsplitter, and the receiver has access to one of the two output ports. In prior work, Yen and Shapiro found the capacity region of this channel if encodings consist of coherent-state preparations. Here, we demonstrate how to achieve the coherent-state Yen-Shapiro region (for a range of parameters) using a sequential decoding strategy, and we show that our strategy outperforms the rate regions achievable using conventional receivers. Our receiver performs binary-outcome quantum measurements for every codeword pair in the senders' codebooks. A crucial component of this scheme is a non-destructive "vacuum-or-not" measurement that projects an n-symbol modulated codeword onto the n-fold vacuum state or its orthogonal complement, such that the post-measurement state is either the n-fold vacuum or has the vacuum removed from the support of the n symbols' joint quantum state. This receiver requires the additional ability to perform multimode optical phase-space displacements which are realizable using a beamsplitter and a laser.
description: v1: 9 pages, 2 figures, submission to the 2012 International Symposium on Information Theory and its Applications (ISITA 2012), Honolulu, Hawaii, USA; v2: minor changes
Exploring Relationships Between Socio-Economic Status and the Health Correlates of Excess Weight Among Canadians
Creators: name: Higgins, Benjamin Roscoe
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Social Sciences
subject: social inequality
subject: Body Weight
subject: population/public health

description: Previous studies have examined the relationship between social class and body mass index (BMI) in Canada, illustrating a class gradient in body weight. Few researchers have examined the relationship between social class and comorbidities of excess weight. Using the Canadian Health Measures Survey (Cycle 1), I employ multivariate linear and logistic regression techniques to explore the relationship between socioeconomic status (SES), sociodemographic characteristics, and weight-related health (BMI and comorbidities of excess weight) among Canadians. I use the Edmonton Obesity Staging System to operationalize comorbidities of excess weight as sub-clinical indicators of medical conditions associated with excess weight (aerobic fitness), medical symptoms (hypertension), and functional limitations. I find that the relationship between SES and weight-related health varies by gender, measure of SES, and measure of weight-related health, concluding that to better understand how social class influences weight-related health, researchers need to expand how ‘weight’ is measured.
Persephona punctata Linnaeus 1758
Creators: name: Almeida, Alexandre Oliveira De
name: Guerrazzi, Maria Cec Lia
name: Coelho, Petr Ȏ Nio Alves
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Leucosiidae
Persephona
Persephona punctata

description: Persephona punctata (Linnaeus, 1758)
Material examined (N=2). 1m, 19/IX/2000, 13°52’37”S / 38°57’11”W (MZUESC #64).
Distribution. Western Atlantic – Antilles, Colombia, Venezuela, Guyanas, and Brazil (from Amapá to Rio Grande do Sul) (Melo 1996).
Ecological notes. Occurs on mud, but also present on sand, and shell bottoms. From shallow waters to 50 m (Melo 1996).
Previous records in Bahia. Miers (1886), Coelho & Torres (1980), Almeida et al. (2007).
description: Published as part of Almeida, Alexandre Oliveira De, Guerrazzi, Maria Cec Lia & Coelho, Petr Ȏ Nio Alves, 2007, Stomatopod and decapod crustaceans from Camamu Bay, state of Bahia, Brazil, pp. 1-45 in Zootaxa 1553 on page 26, DOI: 10.5281/zenodo.178168
Propagation of charged particle waves in a uniform magnetic field
Creators: name: Bracher, Christian
name: Gonzalez, Arnulfo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: This paper considers the probability density and current distributions generated by a point-like, isotropic source of monoenergetic charges embedded into a uniform magnetic field environment. Electron sources of this kind have been realized in recent photodetachment microscopy experiments. Unlike the total photocurrent cross section, which is largely understood, the spatial profiles of charge and current emitted by the source display an unexpected hierarchy of complex patterns, even though the distributions, apart from scaling, depend only on a single physical parameter. We examine the electron dynamics both by solving the quantum problem, i. e., finding the energy Green function, and from a semiclassical perspective based on the simple cyclotron orbits followed by the electron. Simulations suggest that the semiclassical method, which involves here interference between an infinite set of paths, faithfully reproduces the features observed in the quantum solution, even in extreme circumstances, and lends itself to an interpretation of some (though not all) of the rich structure exhibited in this simple problem.
description: 39 pages, 16 figures
การประเมินสุขภาพและพฤติกรรมสุขภาพของแรงงานสูงอายุในภาคใต้
Creators: name: ปัจฉิมา บัวยอม
Publisher: name: กองนวัตกรรมและวิจัย กรมควบคุมโรค
Year: 2553
Subjects: การประเมินสุขภาพ
พฤติกรรมสุขภาพ
แรงงานสูงอายุ
ภาคใต้

description: วารสารควบคุมโรค, 36, 2, 81-89
Performance of Actively-Aerated Biofilters Using a Multiple-Level Air Injection System to Enhance Biological Treatment of Methane Emissions
Creators: name: Farrokhzadeh, Hasti
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Engineering--Civil
subject: Engineering--Environmental
subject: Methane, biofilters, methanotrophs, active aeration

description: The present research is intended to remove methane from a gas stream by converting it into carbon dioxide by means of aerobic methane-oxidizing microorganisms. Such technology can be useful when dealing with biogas from landfills, or solution gas from natural gas wells. Taken that methane oxidation is an aerobic process, a major enhancement in efficiency is observed by the active introduction of oxygen throughout the biofilter profile. Thus, with the aim of improving conventional biofilters, in this study a multiple-level aeration biofilter design is proposed. Laboratory column experiments were run to study three different actively-aerated methane biofilter configurations. Columns were aerated at one, two, or three levels along the bed thickness. Inlet methane loading rates were increased at five stages between 6 mL/min to 18 mL/min. A first set of columns were operated introducing air at flow rates calculated based on the oxidation reaction stoichiometry. The effects of methane feeding rate, levels of aeration, and residence time were evaluated. Based on the results obtained from a mixed Analysis of Variances, the response surface, and laboratory observations, it was suggested that the biofilter column with two aeration levels has the most even performance over time, maintaining an average oxidation efficiency of 85.1% over the 195 days of experiments. A second set of columns with the same aeration designs were run for varying air to methane flow rates. Air flow rates were changed inlet air flow rates between ¼ of stoichiometric levels to 1.5 times higher than stoichiometric values. The performance of columns was recorded for 90 days. With air flow rates set at ¼ of the stoichiometric value, an average 13.8% reduction in performance of the biofiltration designs was observed. However, more experiments are required to evaluate the long-term performances of aerated biofilters operated under low air to methane flow rate ratios.
Minha Terra for Orchestra and Sound Files
Creators: name: Baptista, Denis Rafael Nassar
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Music
subject: Composition
subject: Spoken voice
subject: Orchestral music

description: Minha Terra is a piece for orchestra and sound files based on the musical materials generated from the vernacular speech and the regional dances and rhythms from the Brazilian provinces of Rio Grande do Sul, Rio de Janeiro and Pernambuco. The piece is scored for a standard North American orchestra (2222/4231/Timp./Perc./Strings), and it has three movements with the approximate duration of eighteen minutes. The thesis contains a discussion of Brazilian dialects, of composers who made musical use of speech from points of view that are different from my own, and of traditional music and dances from the three Brazilian provinces. It also contains a discussion of the process that lead to the creation of the text, the recording of the voices, and the transcriptions of the musical material. There is an extensive discussion of the musical language of the piece. The thesis also has appendices that include the complete text, the musical transcriptions, and the complete orchestral score.
Evolutionary Map of the Universe
Creators: name: Norris, Ray P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: EMU is a wide-field radio continuum survey planned for the new Australian Square Kilometre Array Pathfinder (ASKAP) telescope, due to be completed in 2012. The primary goal of EMU is to make a deep ($\sim 10μ$Jy/bm rms) radio continuum survey of the entire Southern Sky at 1.4 GHz, extending as far North as +30$°$ declination, with a 10 arcsec resolution. EMU is expected to detect and catalog about 70 million galaxies, including typical star-forming galaxies up to z=1, powerful starbursts to even greater redshifts, and AGNs to the edge of the Universe. EMU will undoubtedly discover new classes of object. Here I present the science goals and survey parameters.
description: The Spectral Energy Distribution of Galaxies Proceedings IAU Symposium No. 284, 2011, R.J. Tuffs & C.C.Popescu, eds
Measurements of Ks, Lambda and Xi from Au+Au collisions at \sqrt{s_NN} = 7.7, 11.5 and 39 GeV in STAR
Creators: name: Zhu, Xianglei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report on the measurements of Ks, Lambda and Xi spectra at mid-rapidity (|y|<0.5) in the most central (0-5%) Au+Au collisions at \sqrt{s_NN} = 7.7, 11.5 and 39 GeV from the STAR experiment. The extracted yields and the corresponding data from Pb+Pb collisions measured by the NA49 and CERES experiments at SPS are consistent. The Lambda, Anti-Lambda, Xi- and Xi+ to pion ratios agree well with the predictions from a statistical hadronization model at all three energies.
description: 6 pages, 4 figures, to appear in the proceedings for Strangeness in Quark Matter 2011, Cracow, Poland, September 18-24, 2011
Precision electrodynamics of unconventional superconductors : microwave spectroscopy and penetration depth
Creators: name: Bobowski, Jake Stanley
Publisher: name: University of British Columbia
Year: 2010

description: Precision measurements of the electrodynamics of unconventional superconductors are reported. Measurements of the magnetic penetration depth temperature dependence are made via cavity perturbation and a novel microwave spectrometer gives the surface resistance continuously from 0.05 to 26.5 GHz. The microwave conductivity of single crystals of YBa₂Cu₃O₆.₅₀ has been measured using the broadband spectrometer. Conductivity spectra were measured after preparing the crystal in the ortho-II phase in which the Cu-O chain oxygens are ordered into alternating full and empty chains. These spectra exhibit features expected for quasiparticle scattering from dilute weak impurities in a d-wave superconductor. The measurements were repeated after reducing the degree of oxygen order in the Cu-O chains. The disordered spectra retain the weak-limit scattering features, however, increased quasiparticle scattering broadens the widths. The conductivity of a new generation of samples, with an order of magnitude lower impurity concentrations, are unchanged from those of the older generation samples. In both generations of crystals the spectral widths are largely determined by residual disorder in the chains. The electrodynamics of single crystal Ba₀.₇₂K₀.₂₈Fe₂As₂ and Ba(Fe₀.₉₅Co₀.₀₅)₂As₂ have been investigated. Measurements of ∆⋌(T)are used to extract the superfluid density ⋌²(0)/⋌²(T) which is observed to approach Tc linearly indicative of mean-field behaviour. At low-temperatures, the superfluid density obeys the a power law ⋌²(0)/⋌²(T)= 1 - (T/T*)n with n varying from 2.1 to 2.7 for the three crystals studied. At T/Tc ≈ 0.04, all three samples exhibit a step-like feature of order 1 anstrom in the measured penetration depth that is of unknown origin. The surface resistance of two Ba₀.₇₂K0.₂₈Fe₂As₂ crystals reveal a sample-dependent extrinsic loss. The spectra, however, share a common temperature dependence and follow frequency squared when the extrinsic loss is removed. This frequency dependence translates to a flat quasiparticle conductivity and implies a high scattering rate(～ 200 GHz). The microwave spectroscopy of a Ba(Fe₀.₉₅Co₀.₀₅)₂As₂ sample reveals more anomalous behaviour. Even after subracting of the extrinsic loss, the surface resistance rapidly increases when the frequency scaled by Tc is above 0.04. The resistivity of the Ba(Fe₀.₉₅Co₀.₀₅)₂As₂ sample is an order of magnitude larger than that of the K-doped samples suggesting the anomalous behaviour may be activated by enhanced impurity concentrations.
The Evolutionary Potential of Bovine Viral Diarrhea Virus: A Model ssRNA Virus
Creators: name: Chernick, Adam Alexander
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Genetics
subject: FOS: Biological sciences
subject: Biology--Molecular
subject: Veterinary Science
subject: Virology
subject: Bovine viral diarrhea virus
subject: ssRNA
subject: Evolution
subject: Quasispecies
subject: Phylogenetic
subject: Next generation sequencing

description: Single stranded RNA viruses are a group of pathogens infecting all animals. They include human pathogens such as human immunodeficiency virus, hepatitis C virus and influenza. Their error-prone replication generates mutations in their genomes, producing a reservoir of viral genomes capable of surviving variable selective pressures. Under certain conditions this is called a quasispecies. Studying these viral populations in vivo is challenging and model systems help to better understand their behavior. Bovine viral diarrhea virus (BVDV) is a ssRNA virus infecting cattle worldwide. Persistent BVDV infections, where animals are born immunotolerant to the virus due to an in utero infection, present a unique opportunity to study a quasispecies in the relative absence of immune selection. Methods and results useful for understanding both BVDV and ssRNA viruses in general are presented here. Canadian BVDV isolates were used to infer the evolutionary history of BVDV. Significant variability in circulating isolates was observed and clustering below the sub-genotype level may be of antigenic significance. Within a single, persistently infected host, substantial clustering of viral genomes by tissue compartment was described. The variable regions of the viral genome were also conserved from animal to animal; whether a region is variable or not appears to primarily be a feature of the virus, not the host. Preliminary data using a high-throughput viral neutralization assay showed potential to rapidly phenotype viral isolates and directly compare their antigenic properties. Although additional work is needed to ensure the assay is reproducible and reliable, statistical analysis of the data in conjunction with viral genome sequences offers a method of correlating genotype with antigenic phenotype. These data can improve BVDV control programs, especially the design of new vaccines. More broadly, these methods and results are also applicable to other ssRNA viruses. Data describing the intrahost variation of BVDV can be applied to viruses that have persistent phases or depend on the variation generated in infected hosts to escape acquired immune responses in a host population. This thesis presents findings that both further our understanding of an important pathogen of cattle and an important group of viruses in general.
Biological Simulation and Evolutionary Optimization: Modelling the Physiology Behind Influenza A Infection
Creators: name: Sarpe, Vladimir
Publisher: name: Graduate Studies
Year: 2012
Subjects: subject: Computer Science
subject: Simulation
subject: Modelling
subject: Immunology
subject: FOS: Clinical medicine
subject: Influenza
subject: Optimization
subject: Parameter
subject: Discovery

description: Using agent-based methodology and a 3-dimensional modelling and visualization environment (LINDSAY Composer), we present an agent-based simulation of the decentralized processes in the human immune system. The agents in our model – such as immune cells, viruses and cytokines – interact through simulated physics in two different, compartmentalized and decentralized 3-dimensional environments namely, (1) within the tissue and (2) inside a lymph node. While the two environments are separated and perform their computations asynchronously, an abstract form of communication is allowed in order to replicate the exchange, transportation and interaction of immune system agents between these sites. The distribution of simulated processes, that can communicate across multiple, local CPUs or through a network of machines, provides a starting point to build decentralized systems that replicate larger-scale processes within the human body, thus creating integrated simulations with other physiological systems, such as the circulatory, endocrine, or nervous system. One of the challenges of modelling biological systems is choosing the parameter values which lend it biological credibility. As a potential solution, we propose a parameter tuning approach using Particle Swarm Optimization. This approach relies on a graphical representation of an expected outcome as the metric for evaluating the feasibility of a particular set of parameters. As part of our experiments, we apply the optimization approach to the parameters of the clonal selection mechanism within the simulated lymph node. The results of the optimization allow us to understand the benefits and limitations of using this approach, as well as predict its applicability to larger, more complex biological simulations.
Raman spectroscopy of the interlayer shear mode in few-layer MoS2 flakes
Creators: name: Plechinger, G.
name: Heydrich, S.
name: Eroms, J.
name: Weiss, D.
name: Schüller
name: Korn, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Single- and few-layer MoS2 has recently gained attention as an interesting new material system for opto-electronics. Here, we report on scanning Raman measurements on few-layer MoS2 flakes prepared by exfoliation. We observe a Raman mode corresponding to a rigid shearing oscillation of adjacent layers. This mode appears at very low Raman shifts between 20 and 30 relative wavenumbers. Its position strongly depends on the number of layers, which we independently determine using AFM measurements and investigation of the other characteristic Raman modes. Raman spectroscopy of the shear mode therefore is a useful tool to determine the number of layers for few-layer MoS2 flakes.
description: 4 pages, 3 figures, submitted to Applied Phys. Lett
Coalescence of Single Photons Emitted by Disparate Single Photon Sources: The Example of InAs Quantum Dots and Parametric Down-Conversion Sources
Creators: name: Polyakov, Sergey V.
name: Muller, Andreas
name: Flagg, Edward B.
name: Ling, Alex
name: Borjemscaia, Natalia
name: Van Keuren, Edward
name: Migdall, Alan
name: Solomon, Glenn S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Single photons produced by fundamentally dissimilar physical processes will in general not be indistinguishable. We show how photons produced from a quantum dot and by parametric down-conversion in a nonlinear crystal can be manipulated to be indistinguishable. The measured two-photon coalescence probability is 16%, and is limited by quantum-dot decoherence. Temporal filtering to the quantum dot coherence time and accounting for detector time response increases this to 61% while retaining 25% of the events. This technique can connect different elements in a scalable quantum network.
description: 5 pages, 4 figures
Gravitational waves from scalar field accretion
Creators: name: Núnez, Darío
name: Degollado, Juan Carlos
name: Moreno, Claudia
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Our aim in this work is to outline some physical consequences of the interaction between black holes and scalar field halos in terms of gravitational waves. In doing so, the black hole is taken as a static and spherically symmetric gravitational source, {\it i. e.} the Schwarzschild black hole, and we work within the test field approximation, considering that the scalar field lives in the curved space-time outside the black hole. We focused on the emission of gravitational waves when the black hole is perturbed by the surrounding scalar field matter. The symmetries of the spacetime and the simplicity of the matter source allow, by means of a spherical harmonic decomposition, to study the problem by means of a one dimensional description. Some properties of such gravitational waves are discussed as a function of the parameters of the infalling scalar field, and allow us to make the conjecture that the gravitational waves carry information on the type of matter that generated them.
description: 8 pages, 3 figures, added references; accepted in Phys. Rev. D
Studying the nuclear mass composition of Ultra-High Energy Cosmic Rays with the Pierre Auger Observatory
Creators: name: Cazon, L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Fluorescence Detector of the Pierre Auger Observatory measures the atmospheric depth, $X_{max}$, where the longitudinal profile of the high energy air showers reaches its maximum. This is sensitive to the nuclear mass composition of the cosmic rays. Due to its hybrid design, the Pierre Auger Observatory also provides independent experimental observables obtained from the Surface Detector for the study of the nuclear mass composition. We present $X_{max}$-distributions and an update of the average and RMS values in different energy bins and compare them to the predictions for different nuclear masses of the primary particles and hadronic interaction models. We also present the results of the composition-sensitive parameters derived from the ground level component.
description: Proceedings of the 12th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2011, Munich, Germany
Role Of Phosphoglucan Phosphatases In Regulating Starch Degradation In Plants
Creators: name: Silver, Dylan
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Plant Physiology
subject: Biochemistry
subject: phosphoglucan phosphatase
subject: starch degradation
subject: reversible glucan phosphorylation
subject: Redox
subject: protein-protein interactions

description: Starch is the major carbohydrate reserve in plants. Sugars are assimilated into storage granules during photosynthesis and released for continual growth at night from the chloroplast. Breakdown of leaf starch is initiated through reversible glucan phosphorylation by novel dikinases and phosphatases at the granule surface. This phosphorylation disrupts the semi-crystalline structure of starch, and removal of these phosphates provides access for β- amylases to release maltose. The phosphoglucan phosphatases are members of the dual- specificity protein phosphatase (DSP) family, which includes starch excess 4 (SEX4) and like-SEX4 1 (LSF1). SEX4 is required for proper glucan dephosphorylation; however, whether LSF1 participates in starch degradation is unknown. Moreover, how the activity of these phosphatases regulate reversible glucan phosphorylation is unclear. SEX4 and LSF1 both contain phosphatase and carbohydrate-binding domains, but LSF1 also possesses a protein-protein interaction PDZ domain. I show that LSF1 is chloroplastic and necessary for proper starch breakdown, as lsf1 mutants accumulate starch at the end of night. LSF1 lacks phosphatase activity and contains an irregular catalytic motif from known DSPs. The PDZ domain of LSF1 alone forms dimers and can disrupt protein complexes with β-amylases that include LSF1. In the end, these results indicate LSF1 acts as an inactive, scaffold protein that associates with starch degradative enzymes at the granule surface of starch. SEX4 activity is sensitive to oxidation, suggesting this phosphatase might undergo reversible oxidation like other mammalian DSPs. I show that SEX4 phosphatase activity can be modulated between reduced (active) and oxidized (inactive) states, and the endogenous SEX4 can exist in these forms. Oxidation of SEX4 promotes the formation of a disulfide linkage between the catalytic cysteine 198 (Cys198) and Cys130 within the phosphatase domain, and mutation of the latter residue renders SEX4 redox-impaired. Not only does this disulfide bridge protect Cys198 from irreversible oxidation, these data provide the first biochemical evidence for the redox-dependent structural switch that regulates SEX4 activity. Altogether, these results expand our understanding of the protein biology of leaf starch degradation and provide new insights into manipulating the phosphorylation state of starch in planta for industrial applications.