cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
2023 Mathison-Littmann Research Day Abstracts
Creators: name: Patten, Scott Burton
Publisher: name: University of Calgary
Year: 2023

description: The Mathison-Littmann Research Day 2023 was a merger of the annual Mathison Research Day of the Mathison Centre for Mental Health Research & Education and the Sebastian Littmann Research Day of the Department of Psychiatry.
description: Abstracts from the 2023 Sebastian K. Littmann Research Day at the University of Calgary.
Biogenesis of BapF : a novel acylated Bordetella autotransporter
Creators: name: Sims, Peter Vincent
Publisher: name: University of British Columbia
Year: 2013

description: Autotransporters are a superfamily of Gram-negative secreted proteins, composed of a Cterminal domain which forms a β-barrel in the outer membrane and plays a significant role in translocation of the N-terminal passenger domain to the cell surface. A subfamily of autotransporters is N-terminally acylated during their biogenesis, a post-translational modification demonstrated to be essential for their function. Considering the autotransporter passenger domain is secreted beyond the outer membrane, how translocation can occur in the presence of N-terminal acyl groups is undetermined. The work in this thesis describes the biogenesis of the Bordetella autotransporter F (BapF) from B. bronchiseptica RB50, which is Nterminally acylated during the initial stages of its secretion to the cell surface. The acyl groups attached to BapF at the Cys28 residue were shown to be subsequently removed by signal peptidase 1 cleavage between residues Ala34 and Ala35, indicating that BapF forms an acylated intermediate in its secretion pathway. Studying the secretion of BapF mutants in which Nterminal acylation was ablated revealed that the passenger domain was still capable of reaching the cell surface; the surface-expressed passenger domain mediated phenotypes of cellular aggregation and an increased rate of culture sedimentation, similar to that observed in E. coli cultures expressing the wild-type BapF protein. However, cells expressing these mutants appear to have damaged outer membranes, potentially due to the observed increase in fulllength protein accumulating in the periplasm. Alternatively, E. coli cells expressing a BapF mutant in which signal peptidase 1 cleavage is blocked do not exhibit obvious aggregation and sedimentation phenotypes. Yet, an independent passenger domain is clearly produced. Based on the results presented in this thesis, it can be hypothesized that sequential processing of the BapF signal peptide, producing an acylated intermediate in the secretion pathway, helps to regulate the passage of BapF through the periplasm ultimately permitting surface expression. In addition, bioinformatic and molecular analysis strongly suggest the BapF passenger domain folds into a β-propeller structure, and if proven to do so, BapF will be the first autotransporter reported with this conformation
Cylindrical Solutions in Modified f(T) Gravity
Creators: name: Houndjo, M. J. S.
name: Momeni, D.
name: Myrzakulov, R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Physics (physics.gen-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate static cylindrically symmetric vacuum solutions in Weyl coordinates in the framework of f(T) theories of gravity, where T is the torsion scalar. The set of modified Einstein equations is presented and the fourth coming equations are established. Specific physical expressions are assumed for the algebraic function f(T) and solutions are obtained. Moreover, general solution is obtained with finite values of u(r) on the axis r = 0, and this leads to a constant torsion scalar. Also, cosmological constant is introduced and its relation to Linet-Tian solution in GR is commented.
description: 13 pages; Accepted for publication in International Journal of Modern Physics D (IJMPD)
Stories from the Pandemic: A Métissage on Digital Environments, Embodiment, and Indigenous Education
Creators: name: Hanson, Aubrey
Publisher: name: University of Calgary Conference on Postsecondary Learning and Teaching
Year: 2023
Subjects: Pandemic
Indigenous
Education
Online
decolonization
reconciliation

description: Through a métissage or interweaving of vignettes, reflections, and scholarly engagement, this presentation draws on Hanson’s experiences over the past few years to consider the topic of collective transformation. Hanson explores the transformation precipitated by the unexpected years of online life starting with the outbreak of COVID-19, alongside the ongoing transformation called for in Indigenous Education. The work of weaving Indigenous ways of knowing, being, and doing into teaching and learning in Western institutions requires perseverance and calls us to grapple with complex frameworks like decolonization, reconciliation, and relationality. Meanwhile, the experiences of the past few years have called for adaptability in response to the material realities of the online era. Set amidst the pandemic, these considerations touch on themes of embodiment, land, climate, culture, consciousness, and uncertainty.
Nonlinear quantum interferometry with Bose condensed atoms
Creators: name: Lee, Chaohong
name: Huang, Jiahao
name: Deng, Haiming
name: Dai, Hui
name: Xu, Jun
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In quantum interferometry, it is vital to control and utilize nonlinear interactions for achieving high-precision measurements. Attribute to their long coherent time and high controllability, ultracold atoms including Bose condensed atoms have been widely used for implementing quantum interferometry. Here, we review the recent progresses in theoretical studies of quantum interferometry with Bose condensed atoms. In particular, we focus on the nonlinear phenomena induced by the atom-atom interaction and how to control and utilize these nonlinear phenomena. Under the mean-field description, due to the atom-atom interaction, matter-wave solitons appear in the interference patterns, and macroscopic quantum self-trapping exists in the Bose-Josephson junctions. Under the many-body description, the atom-atom interaction can generate non-classical entanglement, which may be utilized to achieve high-precision measurements beyond the standard quantum limit.
description: 22 pages, 10 figures, resubmitted to Frontiers of Physics. The references have been updated
Observation of colossal topological Hall effect in noncoplanar ferromagnet Cr5Te6 thin films
Creators: name: Chen, Yequan
name: Zhu, Yingmei
name: Lin, Renju
name: Niu, Wei
name: Liu, Ruxin
name: Zhuang, Wenzhuo
name: Zhang, Xu
name: Liang, Jinghua
name: Sun, Wenxuan
name: Chen, Zhongqiang
name: Hu, Yongsheng
name: Song, Fengqi
name: Zhou, Jian
name: Wu, Di
name: Ge, Binghui
name: Yang, Hongxin
name: Zhang, Rong
name: Wang, Xuefeng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The topological Hall effect (THE) is critical to the exploration of the spin chirality generated by the real-space Berry curvature, which has attracted worldwide attention for its prospective applications in spintronic devices. However, the prominent THE remains elusive at room temperature, which severely restricts the practical integration of chiral spin textures. Here, we show a colossal intrinsic THE in large-area ferromagnet Cr5Te6 thin films epitaxially grown by pulsed laser deposition. Such a THE can be maintained until 270 K, which is attributed to the field-stimulated noncoplanar spin textures induced by the interaction of the in-plane ferromagnet and antiferromagnet infrastructures. Our first-principles calculations further verify the considerable Dzyaloshinskii-Moriya interaction in Cr5Te6. This work not only paves the way for robust chiral spin textures near room temperature in large-area low-dimensional ferromagnetic films for practical applications, but also facilitates the development of high-density and dissipationless spintronic devices.
description: 18 pages, 13 figures, 1 table
Experiences with social support among older adult women participating in gay square dancing
Creators: name: Beselt, L. Jayne
name: McDonough, Meghan H.
name: Walsh, Christine A.
name: Kenny, Sarah J.
Publisher: name: Elsevier
Year: 2023
Subjects: aging
psychosocial support
interpersonal relationships
dance
LGBTQI2S+

description: LGBTQI2S+ (lesbian, gay, bisexual, transgender, questioning, intersex, and two-spirit, etc.) individuals face unique challenges to physical activity participation, such as discrimination and exclusion. Square dance is a form of collaborative group dancing and while traditionally a heteronormative form of dance, gay square dance is typically open to everyone, regardless of sexual orientation. Square dancing offers opportunities to belong to a community of others engaged in the same activity, which older adults often find satisfying. The aim of this research was to understand how older adults who identify as women experience social support in the context of participating in gay square dance and the role previous experiences of social exclusion play in influencing these experiences. Fourteen self-identified women (age range 55–79 years; n = 11 White, n = 1 Black, n = 2 Jewish) belonging to a gay square dance club participated. Participants self-identified as heterosexual (n = 7), lesbian (n = 3), pansexual (n = 1), bisexual (n = 1), or did not identify with existing terminology (n = 2). Interviews were conducted during a gay square-dancing festival and thematically analyzed. Findings highlighted that participants experienced acceptance which affirmed their sense of self and enabled their authentic selves. To foster a sense of belonging and close relationships, specific actions (e.g., demonstrative welcoming of newcomers, mutual support) were taken by other participants in the group. Physical touch is an inherent part of square dancing, which took on different meanings for participants and was overall perceived as safe. Inclusive groups like gay square dance clubs are an important and consistent means where older adult women can experience meaningful social relationships and interactions.
From drag to brag: The role of government grants in enhancing built heritage protection efforts in New Zealand's provincial regions
Creators: name: Aigwi, IE
name: Filippova, O
name: Ingham, J
name: Phipps, Robyn
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: 120599 Urban and Regional Planning not elsewhere classified
subject: FOS: Social and economic geography
subject: Sociology
subject: FOS: Sociology
subject: 160499 Human Geography not elsewhere classified

description: The protection of heritage buildings is essential because they signpost the narration of a community's past into the future. Investment in the protection of heritage buildings through incentives in the form of government grants provides a lifeline for the future preservation of built heritage, which can boost an urban area's local economy. This study sought to evaluate the distribution of heritage buildings in New Zealand, examine the allocation of significant government funding sources for protecting the heritage buildings, and explore the implications of this allocation on future built heritage protection efforts in New Zealand's provincial regions. An analysis of existing relevant documents revealed that while the per capita distribution of heritage buildings was highest in New Zealand's provincial regions, major urban centres received the highest share of government funding. Findings from key informant interviews identified three major themes as implications of the current incentive allocation on built heritage protection efforts in New Zealand's provincial regions: (i) disproportionately low allocation of government grants to provincial regions; (ii) lack of sophistication among property investors in provincial regions; and (iii) “emergency solution” mindset of government funding regulators. These findings imply that though government heritage grant systems are the most extensive non-regulatory incentives for the protection of built heritage in New Zealand, the provincial regions currently struggling with so many underutilised and derelict historical buildings may not be able to keep up with their preservation efforts if they continue to receive a lesser proportion of the available grant. As a recommendation, the central government can assist by directing more discretionary grants to provincial regions to encourage future efforts towards protecting their heritage buildings.
Digital Repositories: Fertile Ground for Tracking the Impact of Non-Traditional Research?
Creators: name: Hurrell, Christie
Publisher: name: Libraries & Cultural Resources
Year: 2023

description: Worldwide, an increasing number of institutions, funding agencies, and publishers have committed to supporting the Declaration on Research Assessment (DORA), which recommends improvements to the ways in which researchers and the outputs of scholarly research are evaluated. One of DORA’s explicit recommendations for institutions is to consider the value and impact of all research outputs, not just peer-reviewed publications, and to consider a broad range of impact measures in research assessment exercises (Declaration on Research Assessment, 2005). Academic libraries, many of which maintain Open Access repositories, are well positioned to support the institutional adoption of DORA. Openly accessible digital repositories have the functionality to manage, preserve, and make available a wide variety of outputs, including grey literature, research data, and other “non traditional” outputs that may not find a home with conventional academic publishers. Some repositories mint persistent identifiers (PIDS), and integrate usage metrics such as downloads and altmetrics, which have the potential to help capture a variety of research impacts beyond traditional citations. This presentation will share preliminary results from a research project that is collecting data from digital repositories at academic libraries whose parent institutions are already signatories to DORA. The research is gathering information about technical features, personnel supports, and outreach and engagement strategies used to promote repositories as a way to showcase and/or measure the impact of diverse research outputs. Attendees will be encouraged to consider ways that research repositories can “branch out” to more actively support the collection and measurement of a wide range of research outputs.
Adaptive-saturated RNN: Remember more with less instability
Creators: name: Nguyen-Duy, Khoi Minh
name: Pham, Quang
name: Nguyen, Binh T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: I.2

description: Orthogonal parameterization is a compelling solution to the vanishing gradient problem (VGP) in recurrent neural networks (RNNs). With orthogonal parameters and non-saturated activation functions, gradients in such models are constrained to unit norms. On the other hand, although the traditional vanilla RNNs are seen to have higher memory capacity, they suffer from the VGP and perform badly in many applications. This work proposes Adaptive-Saturated RNNs (asRNN), a variant that dynamically adjusts its saturation level between the two mentioned approaches. Consequently, asRNN enjoys both the capacity of a vanilla RNN and the training stability of orthogonal RNNs. Our experiments show encouraging results of asRNN on challenging sequence learning benchmarks compared to several strong competitors. The research code is accessible at https://github.com/ndminhkhoi46/asRNN/.
description: 8 pages, 2 figures, 5 tables, ICLR 2023 Tiny Paper Track
Investigating the Effects of Ultrasonic Waves, Chromium (III) Ions, Salinity, and Retarders on HPAM Gel Degradation and Oil-Water Separation
Creators: name: Hasiri, Mojtaba
Publisher: name: Graduate Studies
Year: 2023
Subjects: subject: Hydrolyzed Polyacrylamide (HPAM)
subject: Demulsification
subject: Retarders
subject: Emulsion stability
subject: Oil separation rate
subject: Engineering--Petroleum

description: Oil production is a critical aspect of the global energy industry, and the increasing demand for hydrocarbons necessitates the optimization of oil recovery from mature reservoirs. The in-situ gel treatment is an effective method that enhances oil recovery by reducing the production of water. Despite the benefits of in-situ gel treatment, several challenges exist that may limit its effectiveness. One of these challenges is the possibility of polymer gel particles from production wells entering surface facilities. Its presence can be harmful to surface facilities. Despite the significant studies carried out in this field, several unresolved issues still remain that have not been addressed in the existing research. To address these challenges, This study presents an integrated approach, examining the effects of ultrasonic waves, chromium (III) ions, salinity, and retarders on partially hydrolyzed polyacrylamide (HPAM) gel degradation and their impact on oil-water separation in emulsions stabilized by HPAM aqueous solutions. The study aims to provide valuable insights for optimizing oil-water separation processes and gel degradation, with potential applications for various industries and environmental sustainability. The study's first part investigates the impact of ultrasonic waves on HPAM gel degradation, revealing that sonication time and salinity levels are crucial factors. Increased sonication time reduces residual gel, while higher salinity accelerates the process. The second part evaluates the influence of chromium (III) ions, salinity, and retarders on demulsification efficiency and oil separation in oil-water emulsions. The results indicate that the stability of emulsions may be influenced by chromium (III) ions. The choice of retarder and salinity conditions significantly affect oil separation rates. The third part introduces a novel method for removing gel from a mixture using ultrasonic waves and magnetic nanoparticles. The process involves degrading the polymer gel with ultrasonic waves and adding magnetic nanoparticles to the free polymer, which are then separated using a magnetic field. This integrated approach provides valuable insights for optimizing oil-water separation processes and gel degradation, with potential applications in various industries, such as food and petroleum, focusing on enhanced oil recovery and environmental sustainability. This study contributes to developing more efficient and sustainable strategies for oil production by addressing unresolved issues and exploring innovative gel removal methods.
Additional file 1 of Age and cancer type: associations with increased odds of receiving a late diagnosis in people with advanced cancer
Creators: name: Mills, Sarah
name: Donnan, Peter
name: Buchanan, Deans
name: Smith, Blair H.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Cancer
subject: Science Policy
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Appendix 1. STROBE Statement for Observational Studies: Methods
Brain Structure and Mental Health Symptoms in Children and Adolescents with Prenatal Alcohol Exposure
Creators: name: Nakhid, Daphne Kristen Mitchell
Publisher: name: Graduate Studies
Year: 2023
Subjects: subject: Prenatal alcohol exposure
subject: FASD
subject: Neuroimaging
subject: MRI
subject: QSM
subject: Mental Health
subject: Anxiety
subject: Depression
subject: Limbic subregions
subject: Neuroscience
subject: Psychology--Developmental
subject: Mental Health

description: Prenatal alcohol exposure (PAE) can impact brain development, leading to an increased risk of cognitive difficulties and mental health challenges. Mental health challenges affect many people with PAE, however, associations with brain structure remain unknown. In unexposed populations, mental health symptoms are closely linked to brain volume of subcortical structures and limbic subregions. Whether there is a similar association in individuals with PAE is unknown. Beyond brain volume, iron is a key component of healthy brain development; PAE lowers fetal brain iron and may be associated with the development of mental health symptoms. Whether increased mental health symptoms in youth with PAE are associated with alterations in brain volume or brain iron of subcortical brain structures is yet to be determined. This dissertation used quantitative susceptibility mapping (QSM) and T1-weighted magnetic resonance imaging (MRI) to assess differences in brain iron and brain volume of limbic and subcortical brain regions in youth with and without PAE. Additionally, associations between brain structure and mental health symptoms were assessed within and between groups. Multiple subcortical brain structures and limbic subregions were smaller in the PAE group, but only limbic subregion volume showed associations with mental health symptoms. I found minimal group differences in magnetic susceptibility, a marker of brain iron, but many associations between brain iron and mental health symptoms within and between groups. Furthermore, PAE moderated the association between internalizing symptoms for both brain iron and subnuclei volumes in the thalamus, suggesting that the thalamus may be a unique correlate of mental health symptoms in youth with PAE. This research provides greater insight into limbic subregions that may be affected by PAE that are not observed when looking at the whole volume of a brain region. As the first study to examine magnetic susceptibility in humans with PAE, it provides important information to help understand mental health symptoms in exposed and unexposed populations. This study highlights brain structures and regions that are uniquely associated with mental health symptoms in youth with PAE. Implications of this work include increasing awareness around mental health and promoting appropriate interventions to support youth with PAE.
Spherical Collapse in covariant Galileon theory
Creators: name: Bellini, Emilio
name: Bartolo, Nicola
name: Matarrese, Sabino
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we study the evolution of a spherical matter overdensity in the context of the recently introduced Galileon field theory. Our analysis considers the complete covariant Lagrangian in four dimensions. This theory is composed by a potential and a standard kinetic term, a cubic kinetic term and two additional terms that include the coupling between the Galileon and the metric, to preserve the original properties of Galileons also in curved space-times. Here we extend previous studies, which considered both the quintessence and the cubic terms, by focussing on the role of the last two terms. The background evolution we consider is driven by a tracker solution. Studying scalar perturbations in the non-linear regime, we find constraints on the parameter of the model. We will show how the new terms contribute to the collapse phase and how they modify physical parameters, such as the linearized density contrast and the virial overdensity. The results show that the Galileon modifies substantially the dynamics of the collapse, thus making it possible to observationally constrain the parameters of this theory.
description: 26 pages, 8 figures. Added references. Corrected coefficients in Eq. 8 and in Appendix A
Sudden collapse of a colloidal gel
Creators: name: Bartlett, Paul
name: Teece, Lisa J.
name: Faers, Malcolm A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Metastable gels formed by weakly attractive colloidal particles display a distinctive two-stage time-dependent settling behavior under their own weight. Initially a space-spanning network is formed that for a characteristic time, which we define as the lag time $\taud$, resists compaction. This solid-like behavior persists only for a limited time. Gels whose age $\tw$ is greater than $\taud$ yield and suddenly collapse. We use a combination of confocal microscopy, rheology and time-lapse video imaging to investigate both the process of sudden collapse and its microscopic origin in an refractive-index matched emulsion-polymer system. We show that the height $h$ of the gel in the early stages of collapse is well described by the surprisingly simple expression, $h(\ts) = \h0 - A \ts^{3/2}$, with $\h0$ the initial height and $\ts = \tw-\taud$ the time counted from the instant where the gel first yields. We propose that this unexpected result arises because the colloidal network progressively builds up internal stress as a consequence of localized rearrangement events which leads ultimately to collapse as thermal equilibrium is re-established.
description: 14 pages, 11 figures, final version
Guatteria australis A. St.
Creators: name: Maia, Valéria Cid
name: Mascarenhas, Bernardo
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Magnoliales
Annonaceae
Guatteria
Guatteria australis

description: Guatteria cf. australis A. St. -Hill. (n = 2)
 Gall: on leaf, globoid, intralaminar, green, glabrous (Fig. 5B). Gall-inducer: not determined. Trails: Teresópolis: 360 (26.X.2021), Mozart-Catão (27.X.2021, 25.V.2022); Guapimirim: PoÇo Verde (31.III.2022), Mãe d′Água (24.V.2022), Alameda Von Spix (25.V. 2022).
 Gall: on stem, fusiform, brown, glabrous, multichambered (Fig. 5C). Gall-inducer: not determined. Trails: Teresópolis: Suspensa (26.XI.2021), Mozart-Catão (27.X.2021); Guapimirim: PoÇo Verde (31.III.2022).
 Melo-Júnior et al. (2018) recorded these galls in Babitonga (SC).
description: Published as part of Maia, Valéria Cid & Mascarenhas, Bernardo, 2023, Insect galls of Parque Nacional da Serra dos Órgãos (Rio de Janeiro State, Southeastern Brazil), pp. 1-56 in Papéis Avulsos de Zoologia 63 on page 11, DOI: 10.11606/1807-0205/2023.63.040, http://zenodo.org/record/10270483
Additional file 1 of Presepsin as a predictor of septic shock in patients with urinary tract infection
Creators: name: Sekine, Yoshitaka
name: Kotani, Kazuhiko
name: Oka, Daisuke
name: Nakayama, Hiroshi
name: Miyazawa, Yoshiyuki
name: Syuto, Takahiro
name: Arai, Seiji
name: Nomura, Masashi
name: Koike, Hidekazu
name: Matsui, Hiroshi
name: Shibata, Yasuhiro
name: Murakami, Masami
name: Suzuki, Kazuhiro
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Additional file 1. Supplemental Table 1. Characteristics of Patients with or without SIRS on the enrollment day.
Self-organized network design by link survivals and shortcuts
Creators: name: Hayashi, Yukio
name: Meguro, Yuki
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: One of the challenges for future infrastructures is how to design a network with high efficiency and strong connectivity at low cost. We propose self-organized geographical networks beyond the vulnerable scale-free structure found in many real systems. The networks with spatially concentrated nodes emerge through link survival and path reinforcement on routing flows in a wireless environment with a constant transmission range of a node. In particular, we show that adding some shortcuts induces both the small-world effect and a significant improvement of the robustness to the same level as in the optimal bimodal networks. Such a simple universal mechanism will open prospective ways for several applications in wide-area ad hoc networks, smart grids, and urban planning.
description: 15 pages, 8 figures, 2 tables
Quasi-particle Statistics and Braiding from Ground State Entanglement
Creators: name: Zhang, Yi
name: Grover, Tarun
name: Turner, Ari
name: Oshikawa, Masaki
name: Vishwanath, Ashvin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Topologically ordered phases are gapped states, defined by the properties of excitations when taken around one another. Here we demonstrate a method to extract the statistics and braiding of excitations, given just the set of ground-state wave functions on a torus. This is achieved by studying the Topological Entanglement Entropy (TEE) on partitioning the torus into two cylinders. In this setting, general considerations dictate that the TEE generally differs from that in trivial partitions and depends on the chosen ground state. Central to our scheme is the identification of ground states with minimum entanglement entropy, which reflect the quasi-particle excitations of the topological phase. The transformation of these states allows for a determination of the modular S and U matrices which encode quasi-particle properties. We demonstrate our method by extracting the modular S matrix of an SU(2) spin symmetric chiral spin liquid phase using a Monte Carlo scheme to calculate TEE, and prove that the quasi-particles obey semionic statistics. This method offers a route to a nearly complete determination of the topological order in certain cases.
description: revised for clarity; 17 pages, 9 figures, 1 table
OGMN: Occlusion-guided Multi-task Network for Object Detection in UAV Images
Creators: name: Li, Xuexue
name: Diao, Wenhui
name: Mao, Yongqiang
name: Gao, Peng
name: Mao, Xiuhua
name: Li, Xinming
name: Sun, Xian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Occlusion between objects is one of the overlooked challenges for object detection in UAV images. Due to the variable altitude and angle of UAVs, occlusion in UAV images happens more frequently than that in natural scenes. Compared to occlusion in natural scene images, occlusion in UAV images happens with feature confusion problem and local aggregation characteristic. And we found that extracting or localizing occlusion between objects is beneficial for the detector to address this challenge. According to this finding, the occlusion localization task is introduced, which together with the object detection task constitutes our occlusion-guided multi-task network (OGMN). The OGMN contains the localization of occlusion and two occlusion-guided multi-task interactions. In detail, an occlusion estimation module (OEM) is proposed to precisely localize occlusion. Then the OGMN utilizes the occlusion localization results to implement occlusion-guided detection with two multi-task interactions. One interaction for the guide is between two task decoders to address the feature confusion problem, and an occlusion decoupling head (ODH) is proposed to replace the general detection head. Another interaction for guide is designed in the detection process according to local aggregation characteristic, and a two-phase progressive refinement process (TPP) is proposed to optimize the detection process. Extensive experiments demonstrate the effectiveness of our OGMN on the Visdrone and UAVDT datasets. In particular, our OGMN achieves 35.0% mAP on the Visdrone dataset and outperforms the baseline by 5.3%. And our OGMN provides a new insight for accurate occlusion localization and achieves competitive detection performance.
description: 20 pages, 15 figures
Advances in Total Body Irradiation Treatment: Improving Standardization and Efficiency
Creators: name: Frederick, Rebecca Eve Freeman
Publisher: name: Graduate Studies
Year: 2023
Subjects: subject: Radiation therapy
subject: Hematology-oncology
subject: Total body irradiation
subject: Physics--Radiation
subject: Oncology
subject: Biophysics--Medical

description: Total body irradiation (TBI) is a type of radiation therapy given prior to hematopoietic cell transplantation, where a uniform dose of radiation is delivered to the whole body. Because of the large treatment volume and patient setup complexities, TBI treatment times are long leading to increased patient discomfort and considerable resource use. The goal of this thesis was to implement flattening filter free (FFF) beams in TBI treatment that permit an increased dose rate and thus reduced treatment time. The standard TBI technique currently in use at the Tom Baker Cancer Centre (TBCC) was used as a foundation for implementing FFF beams. A planning methodology for FFF in TBI is presented, involving the development of standardized multileaf collimator leaf position templates based on patient dimensions. A retrospective treatment planning study confirmed the clinical acceptability of the higher dose rate FFF TBI technique compared to the standard TBI technique. It also established the expected total treatment time savings as calculated by the treatment planning system. Furthermore, automated treatment planning was introduced to facilitate clinical implementation of FFF beams. Automation’s suitability for improving plan standardization and dosimetric consistency was determined for the standard TBI technique through comparing plans created manually or through automation. These are desirable characteristics when commencing a prospective study. Flattening filter free IRradiation at an Extended distance for TBI (FIRE-TBI) was implemented at the TBCC, and was used for treatments between March and December 2022 as part of a prospective comparative study. FIRE-TBI had similar delivered dosimetry to the standard TBI technique, and slightly improved planned dosimetry with respect to dose homogeneity and the mean lung dose. The expected time savings were realized in a clinical setting, with positive feedback from patients and staff performing treatments. Since higher dose rates for TBI have been historically thought to be related to pulmonary injury, this toxicity as well as other radiation-related side effects were monitored in the enrolled patients. No significant differences in outcomes were identified in this small patient cohort, indicating the safety of FIRE-TBI.
Isometry groups of proper metric spaces
Creators: name: Niemiec, Piotr
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 37B05, 54H15 (Primary) 54D45 (Secondary)

description: Given a locally compact Polish space X, a necessary and sufficient condition for a group G of homeomorphisms of X to be the full isometry group of (X,d) for some proper metric d on X is given. It is shown that every locally compact Polish group G acts freely on GxY as the full isometry group of GxY with respect to a certain proper metric on GxY, where Y is an arbitrary locally compact Polish space with (card(G),card(Y)) different from (1,2). Locally compact Polish groups which act effectively and almost transitively on complete metric spaces as full isometry groups are characterized. Locally compact Polish non-Abelian groups on which every left invariant metric is automatically right invariant are characterized and fully classified. It is demonstrated that for every locally compact Polish space X having more than two points the set of proper metrics d such that Iso(X,d) = {id} is dense in the space of all proper metrics on X.
description: 24 pages
Private health service, public waiting time and patient welfare : theoretical modeling and empirical evidence
Creators: name: Qian, Qu
Publisher: name: University of British Columbia
Year: 2012

description: Motivated by health reform debates and policy changes in Canada and other OECD countries, we study how the private and public health care impact on the public health waiting time and more generally the welfare of patients. This thesis encompasses theoretical and empirical research. In Chapter 2, we develop a theoretical model and then empirically test the association between allowing private care financing and public waiting time using joint replacement surgery data of nine Canadian provinces. Two policies that induce private care financing are tested. The empirical results suggest that both policies are associated with shorter public waiting times. This work contributes to the existing literature by providing an empirical analysis of the relationship between private care financing and public health waiting time under a unique institutional setting. In Chapter 3, we investigate the effect of physician dual practice on public waiting time and patient welfare. Motivated by Manitoba’s cataract surgery evidence, our study shows that the public waiting time difference existing between dual-practice physicians and public-only physicians can be explained by service quality differentiation. Patients with lower time costs would have a longer waiting time if physician dual practice were allowed. But some of these patients could be better off by receiving a service of higher quality induced by allowing physician dual practice. This work contributes to the limited literature of physician dual practice. In Chapter 4, we study the use of tax or subsidy on private care to improve income redistribution given that the public health system is financed by a head tax. When the utilization of the public health system is low, the health planner should subsidize private care to induce patients with higher time costs to the private sector. The production cost of public care would then be reduced and so would be the head tax that everyone pays for. We show that the optimal tax/subsidy decision improves income redistribution when the utilization of public health system is either high or low. This work contributes to the literature of public provision of private goods on income redistribution.
Sensing Opportunity and Acting to Create Change: A Case of Institutional Entrepreneurship
Creators: name: Peet, Shawn
Publisher: name: Graduate Studies
Year: 2023
Subjects: subject: institutional entrepreneurship
subject: opportunity
subject: actions
subject: change
subject: practices
subject: strategy
subject: Business Administration--Management

description: Over the past few decades, institutional entrepreneurship theory has been increasingly explored in business research since it helps explain how change can be created by lone actors embedded in well-established institutional environments. Much of the existing literature identifies and clarifies the institutional factors within an environment in which individual actors can exercise agency to change institutional arrangements. Scholars of institutional entrepreneurship literature mostly agree that individual actors’ success with institutional change depends on them (a) obtaining resources, (b) sensing opportunities, and (c) leveraging their social position. Still, exactly what actions these actors take—“how” they create change within heavily institutionalized environments—remains unclear. Similarly, little research has investigated how these individuals navigate pressures to conform to the existing institutional arrangements when embedded in an established institution. In my study, I sought to uncover and explain how a manager in a family-owned and controlled company engaged the three factors noted above to achieve significant revenue growth for his business line, which ultimately also changed some institutional practices and norms within the company. Specifically, I studied a case of institutional entrepreneurship where a manager created change from within a mid to large–sized, privately held, family-run company that has well-established practices and norms, with deeply embedded cultural values originating from the company founder. This manager created change by improving the success of the business, influencing long-standing cultural values, and spawning new company practices and norms not seen by his predecessors, despite pervasive institutional pressures. Through a review of data comprising documents and interview data, I explain the manager’s actions and illustrate what he did to create these changes. I identify four main actions taken by the manager and discuss how companies can actually implement them if they wish to foster institutional entrepreneurship.
Assessing impacts of mediated communication technologies in advancing UNSDG6 at UCalgary campus, Alberta, Canada
Creators: name: Fatima, Kulsum
Publisher: name: Dresden Nexus Conference 2022
Year: 2022
Subjects: Water conservation
Environmental protection
Universities and colleges

description: The study aspires to utilize institutional conditions to foster responsible engagement for environmental protection, and demonstrate an all-inclusive perspective to water sustainability. This perspective aims to highlight existing water sustainable initiatives on UCalgary campus by identifying and implementing user-oriented mediated communication strategies that will enhance user observation & perception around water features, as we move through our campus.
Follow-up workshop on Bespoke Fitting
Creators: name: Horton, Joshua
Publisher: name: Zenodo
Year: 2021

description: Based on polling at the OpenFF annual workshop in May 2021 [1], audience members were interested in attending a dedicated session about the upcoming infrastructure to derive and apply "bespoke" parameters to input molecules. This session was held on September 8, 2021. The first ~20 minutes is a presentation, and the next 40 minutes walks through an interactive jupyter notebook [2] showcasing the features and capabilities of the bespoke fitting workflow. [1] https://doi.org/10.5281/zenodo.4950030 [2] https://github.com/openforcefield/2021-bespokefit-workshop/tree/2021.09.07.0
Cavity optoelectromechanical regenerative amplification
Creators: name: Taylor, Michael A.
name: Szorkovszky, Alex
name: Knittel, Joachim
name: Lee, Kwan H.
name: McRae, Terry G.
name: Bowen, Warwick P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cavity optoelectromechanical regenerative amplification is demonstrated. An optical cavity enhances mechanical transduction, allowing sensitive measurement even for heavy oscillators. A 27.3 MHz mechanical mode of a microtoroid was linewidth narrowed to 6.6\pm1.4 mHz, 30 times smaller than previously achieved with radiation pressure driving in such a system. These results may have applications in areas such as ultrasensitive optomechanical mass spectroscopy.
Additional file 1 of Arabidopsis seedlings respond differentially to nutrient efficacy of three rock meals by regulating root architecture and endogenous auxin homeostasis
Creators: name: Zhang, Tianjiao
name: Zhang, Sainan
name: Yang, Shaohui
name: Zhang, Jianchao
name: Wang, Jiehua
name: Teng, H. Henry
Publisher: name: figshare
Year: 2023
Subjects: subject: Plant Biology
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Primer sequences used in this work for qRT-PCR analysis. Table S2. Chemical composition of three rock powders. Fig. S1. Close-up images of Arabidopsis seedlings growing on horizontally arranged culture media. Fig. S2. Size effects of the three rock powders on Arabidopsis growth after sieving with 125 and 150 μm nylon mesh. (a) Changes in fresh weight; (b) changes in primary root length; (c) changes in lateral root length; (d) changes in lateral root density. Data are shown as mean (n = 30) ± SD. Fig. S3. Dosage effects (40% and 80% wt) on Arabidopsis thaliana of three rock meals after sieving with 150 μm nylon mesh. (a) Changes in fresh weight; (b) changes in primary root length; (c) changes in lateral root length; (d) changes in lateral root density. Data are shown as mean (n = 30) ± SD. Fig. S4. Effects of adding microelements and organic nutrients back to growth media on endogenous auxin content in 2-week-old Arabidopsis seedlings. Data are shown as mean (n = 3) ± SD. Fig. S5. Effects of adding P and K elements to growth media on endogenous auxin content in 2-week-old Arabidopsis seedlings. Data are shown as mean (n = 3) ± SD.
Alternating register automata on finite words and trees
Creators: name: Figueira, Diego
Publisher: name: arXiv
Year: 2012
Subjects: subject: Databases (cs.DB)
subject: Formal Languages and Automata Theory (cs.FL)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: I.7.2, H.2.3, H.2.3

description: We study alternating register automata on data words and data trees in relation to logics. A data word (resp. data tree) is a word (resp. tree) whose every position carries a label from a finite alphabet and a data value from an infinite domain. We investigate one-way automata with alternating control over data words or trees, with one register for storing data and comparing them for equality. This is a continuation of the study started by Demri, Lazic and Jurdzinski. From the standpoint of register automata models, this work aims at two objectives: (1) simplifying the existent decidability proofs for the emptiness problem for alternating register automata; and (2) exhibiting decidable extensions for these models. From the logical perspective, we show that (a) in the case of data words, satisfiability of LTL with one register and quantification over data values is decidable; and (b) the satisfiability problem for the so-called forward fragment of XPath on XML documents is decidable, even in the presence of DTDs and even of key constraints. The decidability is obtained through a reduction to the automata model introduced. This fragment contains the child, descendant, next-sibling and following-sibling axes, as well as data equality and inequality tests.
Additional file 3 of Defining matrix Gla protein expression in the Dunkin-Hartley guinea pig model of spontaneous osteoarthritis
Creators: name: Ma, Xun
name: Zhang, Zhan
name: Kang, Xinyuan
name: Deng, Chunbo
name: Sun, Yingwei
name: Li, Yanjun
name: Huang, Desheng
name: Liu, Xueyong
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Computational Biology

description: Additional file 3.
Dasyphyllum flagellare Cabrera
Creators: name: Maia, Valéria Cid
name: Mascarenhas, Bernardo
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Dasyphyllum
Dasyphyllum flagellare

description: Dasyphyllum flagellare (Casar.) Cabrera (n = 1)
 Gall: on bud, conical, brown, with short trichomes (Fig. 5J). Gall-inducer: not determined. Trail: Teresópolis: Cartão Postal (15.IX.2021).
First record of gall on this host plant.
description: Published as part of Maia, Valéria Cid & Mascarenhas, Bernardo, 2023, Insect galls of Parque Nacional da Serra dos Órgãos (Rio de Janeiro State, Southeastern Brazil), pp. 1-56 in Papéis Avulsos de Zoologia 63 on page 13, DOI: 10.11606/1807-0205/2023.63.040, http://zenodo.org/record/10270483