cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Samuel Beckett’s humour: attuning philosophy and literary criticism
Creators: name: Bariselli, Michela
Publisher: name: University of Reading
Year: 2019

description: This thesis explores and describes the comic features of Samuel Beckett’s prose works. It explores fundamental questions about Beckett’s humour. On the one hand, it investigates the nature of humour, and, on the other, it investigates what counts as humour in Beckett. This twofold investigation requires ‘attuning’ philosophy and literary criticism, where questions and tools of each discipline mutually sharpen and refine each other. Chapter 1 evaluates philosophical accounts of humour and identifies Incongruity Theory as the theory offering the best account of humour. According to this theory, a necessary and not sufficient condition for comic amusement is the perception of an incongruity. Chapter 2 starts exploring what counts as humour in Beckett by examining where comic incongruities are located. By doing so, this chapter puts the Incongruity Theory to the test, and, evaluates the analytical tools ordinarily used in describing humour. This exploration uses Ruby Cohn’s seminal description of Beckett’s humour as a springboard. This chapter individuates a comic layer which Cohn’s description has overlooked – the ‘comic of language acts’. Chapter 3 analyses Beckett’s texts in order to describe the comic devices that depend on the (mis)performance of language acts. In order to do so, the discussion makes use of Austin’s Theory of Speech Acts. As a result, this chapter develops a set of tools able to capture ‘the comic of language acts’, a comic layer which crucially shapes Beckett’s writing. Chapter 4 demonstrates how to make use of the set of tools developed in Chapter 3 by examining three key works of Beckett – More Pricks than Kicks, Watt, and Molloy. This examination leads to the individuation of three movements at the level of illocutionary acts – ‘twists’, ‘convolutions’, and ‘oscillations’ – which are informative of Beckett’s writing and of the experience of reading these works.
Mass Segregation in NGC 2298: limits on the presence of an Intermediate Mass Black Hole
Creators: name: Pasquato, Mario
name: Trenti, Michele
name: De Marchi, Guido
name: Gill, Michael
name: Hamilton, Douglas P.
name: Miller, M. Coleman
name: Stiavelli, Massimo
name: van der Marel, Roeland P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: [abridged] Theoretical investigations have suggested the presence of Intermediate Mass Black Holes (IMBHs, with masses in the 100-10000 Msun range) in the cores of some Globular Clusters (GCs). In this paper we present the first application of a new technique to determine the presence or absence of a central IMBH in globular clusters that have reached energy equipartition via two-body relaxation. The method is based on the measurement of the radial profile for the average mass of stars in the system, using the fact that a quenching of mass segregation is expected when an IMBH is present. Here we measure the radial profile of mass segregation using main-sequence stars for the globular cluster NGC 2298 from resolved source photometry based on HST-ACS data. The observations are compared to expectations from direct N-body simulations of the dynamics of star clusters with and without an IMBH. The mass segregation profile for NGC 2298 is quantitatively matched to that inferred from simulations without a central massive object over all the radial range probed by the observations, that is from the center to about two half-mass radii. Profiles from simulations containing an IMBH more massive than ~ 300-500 Msun (depending on the assumed total mass of NGC 2298) are instead inconsistent with the data at about 3 sigma confidence, irrespective of the IMF and binary fraction chosen for these runs. While providing a null result in the quest of detecting a central black hole in globular clusters, the data-model comparison carried out here demonstrates the feasibility of the method which can also be applied to other globular clusters with resolved photometry in their cores.
description: 21 pages, 3 figures, ApJ accepted
Semantic analysis of Because
Creators: name: Powell, Mava Jo
Publisher: name: University of British Columbia
Year: 2011

description: This semantic analysis of because contains a general study of its potential as the focus of a sentence, and a specific study of its causative and non-causative meaning. In Chapter I, I discuss previous linguistic research on because and because-clauses. One conclusion that seems clear from the data is that because can be the central point of attention in a sentence. I investigate this prominence in Chapter II. I begin by redefining the term "focus," synthesising criteria from other definitions. The redefinition denotes phonological and syntactic rules which speakers apply to emphasize certain parts of a sentence. Then I demonstrate that these rules apply to because, thereby establishing that because can he focussed. In Chapter III, I turn to a more restricted problem. I investigate the semantic features of because which are common to reason-and causal-explanations. I propose that, in its underlying form, because has the feature [+cause]. Sentences in which because appears with the features [+cause] do not contain the lexical items "cause" or "reason." I also describe two conditioned variants of because. One, having the feature [+cause], occurs with the noun or verb cause. The other, having the feature [-cause], occurs with the noun reason. The results of this study confirm evidence accumulating from other linguistic investigations that grammatical words are semantically full, and that they can be described by theoretical terminology appropriate to non-grammatical words. A number of recent publications have appeared on the semantic description of complementation structures, coordinating conjunctions, and determiners. There is comparatively little recent publication on subordinating conjunctions. Even less information is available on lexical items which have been classified both as subordinating conjunctions and as reason adverbials. Within this classification, the word because is an especially important member. From the point of view of linguistics, it is significant as one of the few subordinatores which can occur as a one-word utterance. I investigate the implications of this status under the theoretical term "focus." Furthermore, although no one has claimed that "because is semantically empty, no one has agreed upon its precise meaning, nor has anyone studied the word in depth. Because is also significant from the point of view of linguistic philosophy. The problem of defining reason- and causal-explanations has a long scholarly history. The results of this investigation demonstrate that because is a crucial word for this problem. I show that when because occurs in a sentence either with the lexical items "reason" or "cause," because assimilates in sense to these items. Thus, in these environments, the sense of because is conditioned. But when because occurs in sentences which do not contain those lexical items, because can be synonymously paraphrased either by "reason" or by "cause." Therefore, because is a word whose meaning is common both to reason- and causal-explanations.
title: A comparison of seeking-finding behaviours across the contexts of environmental space, paper documents, and on-screen
Creators: name: Barker, Andrew
Publisher: name: University of Reading
Year: 2019

description: This thesis compares behaviour across three contrasting contexts: environmental space, paper documents, and on-screen. The behaviours examined are defined as seeking-finding behaviours: these comprise continuous, recursive sequences of choices made by an individual purposefully seeking and progressing towards a defined objective; these processes are constructive, dynamic, responsive, and interactive. Such behaviours may be more readily known as wayfinding, information-seeking, or navigating. The lack of a single term encompassing this group of behaviours is indicative of the paucity of previous research using this frame of reference. While there is discussion of seeking-finding in individual contexts, there is little comparing this behaviour between contexts, and none examining it across all three contexts. Comparing behaviours across contexts is facilitated here by the formulation of a taxonomy that creates categories of behaviour equally applicable to all three contexts. This taxonomy differentiates behaviours according to characteristics of the information driving them. In doing this, the taxonomy facilitates comparisons hitherto unrealised, and allows connections to be drawn across multiple disciplines. Behaviours in the three contexts are compared by using the taxonomy in the analysis of data from three studies of human behaviour. This analysis finds that interactions between categories of behaviour, and with the factors of individual, context, and task are complex and multi-dimensional. The conclusion is drawn that, when viewed through the lens of information source, seeking-finding behaviours are comparable across the contexts of environmental space, paper documents, and on-screen. Such comparisons can be revealing about behaviour in ways productive for both information design practice and research across several disciplines, affording new insights and connections. Furthermore, the questions that drive the taxonomy offer an approach for information designers to interrogate their choices when designing.
3D Null Point Reconnection Regimes
Creators: name: Priest, E. R.
name: Pontin, D. I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Recent advances in theory and computational experiments have shown the need to refine the previous categorisation of magnetic reconnection at three-dimensional null points -- points at which the magnetic field vanishes. We propose here a division into three different types, depending on the nature of the flow near the spine and fan of the null. The spine is an isolated field line which approaches the null (or recedes from it), while the fan is a surface of field lines which recede from it (or approach it). So-called "torsional spine reconnection" occurs when field lines in the vicinity of the fan rotate, with current becoming concentrated along the spine, so that nearby field lines undergo rotational slippage. In "torsional fan reconnection" field lines near the spine rotate and create a current that is concentrated in the fan with a rotational flux mismatch and rotational slippage. In both of these regimes, the spine and fan are perpendicular and there is no flux transfer across spine or fan. The third regime, called "spine-fan reconnection", is the most common in practice and combines elements of the previous spine and fan models. In this case, in response to a generic shearing motion, the null point collapses to form a current sheet that is focused at the null itself, in a sheet that locally spans both the spine and fan. In this regime the spine and fan are no longer perpendicular and there is flux transfer across both of them.
description: 16 pages, 10 figures. Accepted for publication in Physics of Plasmas
title: Canadian Literature, No. 240 (2020): Decolonial (Re)Visions of Science Fiction, Fantasy, and Horror
title: Decolonial (Re)Visions of Science Fiction, Fantasy, and Horror
titleType: AlternativeTitle
Creators: name: Canadian Literature
Publisher: name: Canadian Literature
Year: 2020

description: Introduction: Decolonial (Re)Visions of Science Fiction, Fantasy, and Horror Familiarizing Grist Village 'In this very uncertain space' Re-framing the Diasporic Subject A Note—Imagining an Africa That Never Was: Canadian Postwar Book Diplomacy and Settler Contradiction Reclaiming Fossil Ghosts Essential Contingencies, or the Verbs Behind All Nouns The Conformalists Simply Observe The Breadth of "breth" Shifting Cityscapes Something Attentive Wayfinding in the Marginalia Land and language through story No One & Twin Studies Never Enough Sad Poems? Hitched to Everything Frenemies and Possibilities When Poems are Quilts A Terrifying Insularity of Mind Listening to Inuit Stories Twenty-First-Century Novels Faces of Desperation Toward More Feeling (Re)Writing China Diasporic (Be)longings Undertaking the Impossible Designing and Resisting Getting to the Roots Transforming Stories CBC's Canadian History “The lemon is not a lemon”: Flowing Letters for Our Time Rejoicing in MacLennan Voices of Trauma and Hope The Numbers Tell a Story Spaces of Possibility The Divided Self in the African South Walking Woman and Her Legacy To the Heart of the Matter "Jiaozi and Pirozhki" Placing Through Poems, Play, and Stories Indigenous Women and Law Gift Anti-depressant Pantoum Forgotten Jasmine Crowsnest Flow Your Poisoned Life Patrick Lane
Greybody Factor for a Rotating Bardeen Black Hole by Perfect Fluid Dark Matter
Creators: name: Sharif, M.
name: Shaukat, Sulaman
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, the greybody factor is studied analytically for a rotating regular Bardeen black hole surrounded by perfect fluid dark matter. Firstly, we examine the behavior of effective potential by using the radial equation of motion developed from the Klein-Gordon equation. We then consider tortoise coordinate to convert the radial equation into Schrödinger form equation. We solve the radial equation of motion and obtain two different asymptotic solutions in terms of hypergeometric function measured at distinct regimes so called near and far-field horizons. These solutions are smoothly matched over the whole radial coordinate in an intermediate regime to check their viability. Finally, we measure the absorption probability for massless scalar field and examine the effect of perfect fluid dark matter. It is concluded that both the effective potential and greybody factor increase with perfect fluid dark matter.
description: 21 pages, 6 figures
A New Three-Algebra Representation for the {\cal N}=6 su(N)Xsu(N) Superconformal Chern-Simons Theory
Creators: name: Sheikh-Jabbari, M. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Based on the realization of three-algebras in terms of algebra of matrices and four-brackets [arXiv:0807.1570] we present the notion of u(N)-based extended three-algebras, which for N=2 reproduces the Bagger-Lambert three-algebra. Using these extended three-algebras we construct an su(N)\times su(N) Chern-Simons action with explicit SO(8) invariance. The dynamical fields of this theory are eight complex valued bosonic and fermionic fields in the bi-fundamental representation of the su(N)\times su(N). For generic N the fermionic transformations, however, close only on a subclass of the states of this theory onto the 3d, {\cal N}=6 superalgebra. In this sector we deal with four complex valued scalars and fermions, our theory is closely related to the ABJM model [arXiv:0806.1218], and hence it can be viewed as the (low energy effective) theory of N M2-branes. We discuss that our three-algebra structure suggests a picture of open M2-brane stretched between any two pairs of M2-branes. We also analyze the BPS configurations of our model.
description: 39 pages, 3 .eps figures, v2: References added, typos corrected, v3: typos corrected, an appendix added, the version to appear in JHEP
Maternal Emotional Reminiscing, Child Autobiographical Memory, and Their Associations with Pre-Schoolers’ Socioemotional Functioning
Creators: name: Wu, Yun
name: He, Zijing
name: Jobson, Laura
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: Science Policy
subject: Mental Health

description: This study aimed to explore the possible indirect pathway between maternal reminiscing style and child socioemotional functioning (prosocial behaviors and emotional adjustment difficulties) through children’s autobiographical memory (elaboration and specificity). A secondary exploratory aim was to examine whether cultural context moderated these indirect effects. Participants included 94 mother-child dyads drawn from middle- and high-income families in China and Australia. The dyads completed measures of child memory specificity, maternal report of child socioemotional functioning, and a shared emotional reminiscing task that assessed child memory elaboration and maternal sensitive guidance. Path analysis results indicated an indirect effect of maternal supportive reminiscing via child memory elaboration (but not memory specificity) on children’s prosocial behaviors, regardless of the cultural group. However, there was no evidence to suggest an indirect pathway between maternal supportive reminiscing and child adjustment difficulties (or prosocial behaviors) through child memory specificity in either cultural context. These findings provide preliminary support to the recent conceptualization of an indirect pathway between maternal sensitive guidance during emotional reminiscing and children’s prosocial behaviors through child memory elaboration. However, it is important to note that the cross-sectional design limits the causal inferences that can be drawn from the findings. The implications for memory specificity in child socioemotional functioning were less clear and indicated a need for further research in this area.
Sh 2-301: a blistered H II region undergoing star formation
Creators: name: Pandey, Rakesh
name: Sharma, Saurabh
name: Dewangan, Lokesh K.
name: Ojha, Devendra K.
name: Panwar, Neelam
name: Das, Swagat
name: Bisen, D. P.
name: Ghosh, Arpan
name: Sinha, Tirthendu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a multiwavelength study of the H II region Sh 2-301 (S301) using deep optical data, near-infrared data, radio continuum data and other archival data at longer wavelengths. A cluster of young stellar objects (YSOs) is identified in the north-east (NE) direction of S301. The Hα and radio continuum images trace the distribution of the ionized gas surrounding a massive star ALS 207, and the S301 H II region is bounded by an arc-like structure of gas and dust emission in the south-eastern direction. The north-western part of S301 seems to be devoid of gas and dust emission, while the presence of molecular material between the NE cluster and the central massive star ALS 207 is found. The distribution of warm dust emission, ionized gas, and neutral hydrogen together suggests a blistered morphology of the S301 H II region powered by ALS 207, which appears to be located near the edge of the cloud. The location of the NE cluster embedded in the cold molecular cloud is found opposite to the blistered morphology. There is a noticeable age difference investigated between the massive star and the NE cluster. This age difference, pressure calculation, photodissociation regions (PDRs), and the distribution of YSOs favour the positive feedback of the massive star ALS 207 in S301. On a wider scale of S301, the H II region and the young stellar cluster are depicted toward the central region of a hub-filamentary system, which is evident in the infrared images.
description: Accepted for publication in ApJ
title: Mode of action of organic acids against bacterial foodborne pathogens and investigation of improved disinfection methods
Creators: name: Barnes, Ruth Hannah
Publisher: name: University of Reading
Year: 2024

description: Assuring the microbiological safety of fresh produce can present a huge challenge for food producers. Organic acid washes, are commonly used as antimicrobial treatments. However, our understanding of how foodborne pathogens interact with these acids is limited. Bacteria have evolved a variety of mechanisms to promote survival under acidic conditions presented in various environments (e.g. animal stomach). These mechanisms contribute to maintaining a tolerable intracellular pH when the organism is presented with an acidic challenge. This work explores the effect of weak organic acids notably fumarate on the inhibition of amino acid decarboxylase systems which are the most potent acid resistance mechanisms. We demonstrate that sodium fumarate reduces survival in planktonic cultures and biofilms of E. coli, L. monocytogenes and Salmonella under acidic conditions. This effect stems from effects on glutamate amino acid decarboxylase system function or transcription. In E. coli fumarate inhibited the glutamate decarboxylase (GAD) activity and output resulting in lower survival. In L. monocytogenes it also inhibited GAD activity although the organism responded by gadD2 upregulation resulting in higher GABA export, suggesting that possible effects on intracellular GAD activity or other systems might be responsible. In Salmonella, fumarate inhibited the activity of the lysine decarboxylase (LDAR) system under acidic stress resulting in reduced survival. Subsequently, an examination of the possible usage of fumarate in decontamination procedures on fresh produce. Fumarate significantly improved the efficacy of a commercial acidic disinfectant, which was also significantly higher than that of chlorine. Furthermore, with the use of the phenotypic microarrays we explored the effect of significant stress genes (e.g. sigB) in carbon source utilisation and osmotic tolerance of L. monocytogenes. The work demonstrated for first time a self-preservation and nutritional competence (SPANC) balance in a Gram-positive bacterium particularly in the absence of sigB, which enhanced carbon source utilisation in expense to lower stress tolerance.
Static Spherically Symmetric Solutions of the SO(5) Einstein Yang-Mills Equations
Creators: name: Bartnik, Robert A.
name: Fisher, Mark
name: Oliynyk, Todd A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Globally regular (ie. asymptotically flat and regular interior), spherically symmetric and localised ("particle-like") solutions of the coupled Einstein Yang-Mills (EYM) equations with gauge group SU(2) have been known for more than 20 years, yet their properties are still not well understood. Spherically symmetric Yang--Mills fields are classified by a choice of isotropy generator and SO(5) is distinguished as the simplest model with a \emph{non-Abelian} residual (little) group, $SU(2)\times U(1)$, and which admits globally regular particle-like solutions. We exhibit an algebraic gauge condition which normalises the residual gauge freedom to a finite number of discrete symmetries. This generalises the well-known reduction to the real magnetic potential $w(r,t)$ in the original SU(2) YM model. Reformulating using gauge invariant polynomials dramatically simplifies the system and makes numerical search techniques feasible. We find three families of embedded SU(2) EYM equations within the SO(5) system, one of which was first detected only within the gauge-invariant polynomial reduced system. Numerical solutions representing mixtures of the three SU(2) sub-systems are found, classified by a pair of positive integers.
description: 11 pages, 5 figures, 1 table
Reclaiming Fossil Ghosts
Creators: name: Ingwersen, Moritz
Publisher: name: Canadian Literature
Year: 2020

description: Against the backdrop of recent Anthropocene critiques, this article offers a discussion of Indigenous resistance to resource extraction in Warren Cariou’s “An Athabasca Story” (2012), Cherie Dimaline’s The Marrow Thieves(2017), and Nathan Niigan Noodin Adler’s Wrist (2016). Employing elements of gothic, horror, and science fiction, all three works invoke modes of human-geologic enmeshment to imagine Indigenous resistance to settler-colonial fossil fuel industries via the resurgence of fossils who refuse to be commodified. Building on the theoretical work of Kathryn Yusoff and others, I examine their mobilization of fossil metaphors as emancipatory expressions of a type of geologic subjectivity that generates a dislocation of Eurocentric demarcations between the human and the inhuman. Reclaiming fossils, I argue, implies a material-discursive dimension of decolonization that complements the physical repatriation of looted ancestral bones and Indigenous artifacts with the production of self-determined Indigenous narratives of geologic corporeality.
description: Canadian Literature, No. 240 (2020): Decolonial (Re)Visions of Science Fiction, Fantasy, and Horror
Cosmological Constant, Classical "Vacuum" and Special Relativity (From the Lorentz boost to the Milgrom acceleration)
Creators: name: Pierseaux, Yves
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Physics (physics.gen-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We show that Cosmological Constant (CC) is not optional in GR (General Relativity) because it is required by SR (Special Relativity). This completely unexpected result is obtained by introducing a minimal acceleration (Milgrom), square root of CC, in Einstein boost with Lorentz Transformation (LT). We prove that hyperbolic rotation (LT) is an hyperbolic motion with a centrifugal acceleration. In SR with CC (CSR or CR), the universe is not only in expansion (with the law of Hubble) but even in accelerated expansion (cosmological parameter is minus one). Given that the structure of space-time in Einstein's GR is determined by the presence of matter and CC is associated to the absence of matter, we associate CC not to "quantum" vacuum but to classical "vacuum" of Minkowski's space-time (with a renormalization of Minkowski's metric). Finally we show that 1917 Einstein's CC corresponds to 1906 Poincare's non-electromagnetic negative pressure.
description: 13 pages, 5 figures, talk given at ULB 19th December 2008
title: Resistance to anticoagulant rodenticides in House mice that convey the VKORC1 mutation Y139C
Creators: name: Baxter, Mhairi Alyson
Publisher: name: University of Reading
Year: 2019

description: Anticoagulant resistance was discovered in UK House mice almost 60 years ago, soon after the introduction of the first-generation anticoagulant rodenticides (FGARs). Resistant individuals were found to survive field strength anticoagulant baits, and in response, more potent second generation anticoagulant rodenticides (SGARs) were developed. Practical resistance to some SGARs is now raising major concerns. This thesis focuses on the development and implementation of methodologies to investigate resistance in mice.  Susceptibility baseline data were produced for four FGARs using albino susceptible House mice.  Resistance baselines were produced using House mice homozygous for the VKORC1 mutation Y139C, against four FGARs and against five SGARs.  Resistance baselines were produced using House mice heterozygous for the VKORC1 mutation Y139C against five SGARs. For homozygous resistant mice, resistance factors (RFs) were estimated for four FGARs and five SGARs; and for the SGAR bromadiolone and all four FGARs, the magnitude of the RF was sufficient to suggest practical resistance (with a high likelihood of treatment failure). For heterozygous resistant mice, only the SGAR bromadiolone had an RF that would suggest some degree of practical resistance, with all other SGARs expected to be efficacious. ii From the above, the continued use of ineffective anticoagulants would be expected to actively select for anticoagulant resistance, and thus exacerbate the control problem. In the UK, resistant populations of House mice carrying the VKORC1 mutations Y139C and L128S are widespread in animals sampled to date, and the high incidence of homozygous resistance would suggest over reliance on ineffective anticoagulants as a major cause. Data presented here is now available globally, online via the RRAC website, where it can be used to make decisions on rodenticide selection for mouse populations that carry the Y139 mutation, and to quantify the magnitude of FGAR resistance against other VKORC1 mutations.
A continuous time random walk model of transport in variably saturated heterogeneous porous media
Creators: name: Zoia, Andrea
name: Néel, Marie-Christine
name: Cortis, Andrea
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose a unified physical framework for transport in variably saturated porous media. This approach allows fluid flow and solute migration to be treated as ensemble averages of fluid and solute particles, respectively. We consider the cases of homogeneous and heterogeneous porous materials. Within a fractal mobile-immobile (MIM) continuous time random walk framework, the heterogeneity will be characterized by algebraically decaying particle retention-times. We derive the corresponding (nonlinear) continuum limit partial differential equations and we compare their solutions to Monte Carlo simulation results. The proposed methodology is fairly general and can be used to track fluid and solutes particles trajectories, for a variety of initial and boundary conditions.
description: 12 pages, 9 figures
On the Numerical Evaluation of Loop Integrals With Mellin-Barnes Representations
Creators: name: Freitas, Ayres
name: Huang, Yi-Cheng
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An improved method is presented for the numerical evaluation of multi-loop integrals in dimensional regularization. The technique is based on Mellin-Barnes representations, which have been used earlier to develop algorithms for the extraction of ultraviolet and infrared divergencies. The coefficients of these singularities and the non-singular part can be integrated numerically. However, the numerical integration often does not converge for diagrams with massive propagators and physical branch cuts. In this work, several steps are proposed which substantially improve the behavior of the numerical integrals. The efficacy of the method is demonstrated by calculating several two-loop examples, some of which have not been known before.
description: 13 pp. LaTeX
Reconstructing Orbits of Galaxies in Extreme Regions (ROGER) II: reliability of projected phase-space in our understanding of galaxy populations
Creators: name: Coenda, Valeria
name: Rios, Martín de los
name: Muriel, Hernán
name: Cora, Sofía A.
name: Martínez, Héctor J.
name: Ruiz, Andrés N.
name: Vega-Martínez, Cristian A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We connect galaxy properties with their orbital classification by analysing a sample of galaxies with stellar mass $M_{\star} \geq 10^{8.5}h^{-1}M_\odot$ residing in and around massive and isolated galaxy clusters with mass $M_{200} > 10^{15}h^{-1}M_\odot$ at redshift $z=0$. The galaxy population is generated by applying the semi-analytic model of galaxy formation SAG on the cosmological simulation MultiDark Planck 2. We classify galaxies considering their real orbits (3D) and their projected phase-space position using the ROGER code (2D). We define five categories: cluster galaxies, galaxies that have recently fallen into a cluster, backsplash galaxies, infalling galaxies, and interloper galaxies. For each class, we analyse the $g-r$ colour, the specific star formation rate (sSFR), and the stellar age, as a function of the stellar mass. For the 3D classes, we find that cluster galaxies have the lowest sSFR, and are the reddest and the oldest, as expected from environmental effects. Backsplash galaxies have properties intermediate between the cluster and recent infaller galaxies. For each 2D class, we find an important contamination by other classes. We find it necessary to separate the galaxy populations in red and blue to perform a more realistic analysis of the 2D data. For the red population, the 2D results are in good agreement with the 3D predictions. Nevertheless, when the blue population is considered, the 2D analysis only provides reliable results for recent infallers, infalling galaxies and interloper galaxies.
description: 5 figures, 12 pages, accepted for publication in Monthly Notices of the Royal Astronomical Society Main Journal
Burnout and Workplace Incivility Among Emergency Medical Services Practitioners: A Preliminary Report
Creators: name: Lu, Dave W.
name: Shin, Jenny
name: Wan, Christopher
name: Rea, Thomas D.
name: Crowe, Remle P.
name: Meischke, Hendrika W.
name: Counts, Catherine R.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Burnout has detrimental consequences for health care organizations, clinicians, and the quality of care that patients receive. Prior work suggests that workplace incivility (negative interpersonal acts) contributes to burnout. While workplace incivility is linked to EMS practitioner job dissatisfaction, absenteeism, and planned attrition, the relationship between workplace incivility and burnout has not been evaluated among EMS practitioners. This study aimed to characterize the prevalence and association of burnout and workplace incivility among EMS practitioners. A cross-sectional survey of EMS personnel in King County, Washington was performed in January to March of 2021 with burnout as the primary outcome and workplace incivility as a secondary outcome. Multivariable logistic regression was used to evaluate associations between outcomes and EMS practitioner factors that included age, sex, race/ethnicity, years of EMS experience, and current job role. 835 completed surveys were received (response rate 25%). The prevalence of burnout was 39.2%. Women were more likely to have burnout than men (59.3% vs. 33.7%, aOR 2.2, 95% CI 1.3–3.7). Workplace incivility was experienced weekly by 32.1% of respondents, with women more likely to experience incivility compared to men (41.9% vs. 27.2%, aOR 2.0, 95% CI 1.2–3.3). Respondents who experienced frequent workplace incivility were more likely to have burnout than those who did not experience frequent incivility (61.9% vs. 38.1%, OR 4.0, 95% CI 3.0–5.5). The prevalence of burnout and workplace incivility were concerning among EMS practitioners, with women more likely to experience both compared to men. EMS practitioners who experienced frequent workplace incivility were also more likely to have burnout than those who did not experience frequent incivility.
Performance of Prehospital Use of Chest Pain Risk Stratification Tools: The RESCUE Study
Creators: name: Stopyra, Jason P.
name: Snavely, Anna C.
name: Ashburn, Nicklaus P.
name: O’Neill, James
name: Paradee, Brennan E.
name: Hehl, Brian
name: Vorrie, Jordan
name: Wells, Matthew
name: Nelson, R. Darrell
name: Hendley, Nella W.
name: Miller, Chadwick D.
name: Mahler, Simon A.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Mental Health

description: Emergency medical services (EMS) assesses millions of patients with chest pain each year. However, tools validated to risk stratify patients for acute coronary syndrome (ACS) and pulmonary embolism (PE) have not been translated to the prehospital setting. The objective of this study is to assess the prehospital performance of risk stratification scores for 30-day major adverse cardiac events (MACE) and PE. A prospective observational cohort study of patients ≥21 years of age with acute chest pain who were transported by EMS in two North Carolina (NC) counties was conducted from 18 April 2018–2 January 2019. In this convenience sample, paramedics completed HEAR (history, electrocardiogram, age, risk factor), ED Assessment of Chest Pain Score (EDACS), Revised Geneva Score (RGS), and pulmonary embolism rule-out criteria (PERC) assessments on each patient. MACE (all-cause death, myocardial infarction, and revascularization) and PE at 30 days were determined by hospital records and NC Death Index. The positive (+LR) and negative likelihood ratios (−LR) of the risk scores for 30-day MACE and PE were calculated. During the study period, 82.1% (687/837) patients had all four risk score assessments. The cohort was 51.1% (351/687) female, 49.5% (340/687) African American, and had a mean age of 55.0 years (SD 16.0). At 30 days, MACE occurred in 7.4% (51/687), PE occurred in 0.9% (6/687), and the combined outcome occurred in 8.2% (56/687). The HEAR score had a − LR of 0.46 (95% CI 0.27–0.78) and + LR of 1.48 (95% CI 1.26–1.74) for 30-day MACE. EDACS had a − LR of 0.61 (95% CI 0.46–0.81) and + LR of 2.53 (95% CI 1.86–3.46) for 30-day MACE. The PERC score had a − LR of 0 (95% CI 0.0–1.4) and a + LR of 1.38 (95% CI 1.32–1.45) for 30-day PE. The RGS score had a − LR of 0 (95% CI 0.0–0.65) and a + LR of 2.36 (95% CI 2.16–2.57) for 30-day PE. The combination of a low-risk HEAR score and negative PERC evaluation had a − LR of 0.25 (95% CI 0.08–0.76) and a + LR of 1.21 (95% CI 1.21–1.30) for 30-day MACE or PE. The combination of a paramedic-obtained HEAR score and PERC evaluation performed best to exclude 30-day MACE and PE but was not sufficient for directing prehospital decision making.
Bloomberg and the GameStop saga: The fear of stock market democracy
Creators: name: Duterme Tom
Publisher: name: Zenodo
Year: 2021
Subjects: GameStop
Bloomberg
finance
democracy

description: The GameStop saga constituted a large-scale ‘breaching experiment’ by arousing the emotion and indignation of a large part of the financial community. This article mobilizes this event to question the normal way of interpreting stock market movements, through an analysis of the dominant interface: the Bloomberg Terminal. This device shapes financial information through three framing effects: selection, weighting and ranking. This ‘Bloomberg frame’ is quite different from other information sources that emerged during the saga and that allowed some retail investors to understand events from another angle. This first pluralization of the informational bases guiding investors’ decisions finally raises the issue of the democratization of finance, its feasibility and its desirability.
The Dual Origin of Stellar Halos
Creators: name: Zolotov, Adi
name: Willman, Beth
name: Brooks, Alyson M.
name: Governato, Fabio
name: Brook, Chris B.
name: Hogg, David W.
name: Quinn, Tom
name: Stinson, Greg
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the formation of the stellar halos of four simulated disk galaxies using high resolution, cosmological SPH + N-Body simulations. These simulations include a self-consistent treatment of all the major physical processes involved in galaxy formation. The simulated galaxies presented here each have a total mass of ~10^12 M_sun, but span a range of merger histories. These simulations allow us to study the competing importance of in-situ star formation (stars formed in the primary galaxy) and accretion of stars from subhalos in the building of stellar halos in a LambdaCDM universe. All four simulated galaxies are surrounded by a stellar halo, whose inner regions (r < 20 kpc) contain both accreted stars, and an in-situ stellar population. The outer regions of the galaxies' halos were assembled through pure accretion and disruption of satellites. Most of the in-situ halo stars formed at high redshift out of smoothly accreted cold gas in the inner 1 kpc of the galaxies' potential wells, possibly as part of their primordial disks. These stars were displaced from their central locations into the halos through a succession of major mergers. We find that the two galaxies with recently quiescent merger histories have a higher fraction of in-situ stars (~20-50%) in their inner halos than the two galaxies with many recent mergers (~5-10% in-situ fraction). Observational studies concentrating on stellar populations in the inner halo of the Milky Way will be the most affected by the presence of in-situ stars with halo kinematics, as we find that their existence in the inner few tens of kpc is a generic feature of galaxy formation.
description: Version accepted to ApJ. Content is unchanged from previous version, but paper has been restructured for clarity
DigiVet Deliverable 1.3 - Reports from Stakeholder workshops and policy brief
Creators: name: Boden, Lisa
name: Enright, Jessica
name: Bogaardt, Carlijn
name: Denwood, Matt
name: Rodriguez Ewerlöf, Ivana
name: Shortall, Orla
name: Hulten, Cecilia
name: Cha, Wonhee
name: Widgren, Stefan
name: Frossling, Jenny
name: Agren, Estelle
Publisher: name: Zenodo
Year: 2023

description: These documents consist of the reports from DigiVet work package 1 workshops, with an associated policy brief.
On Properties of Adjoint Systems for Evolutionary PDEs
Creators: name: Tran, Brian K.
name: Southworth, Ben S.
name: Leok, Melvin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We investigate the geometric structure of adjoint systems associated with evolutionary partial differential equations at the fully continuous, semi-discrete, and fully discrete levels and the relations between these levels. We show that the adjoint system associated with an evolutionary partial differential equation has an infinite-dimensional Hamiltonian structure, which is useful for connecting the fully continuous, semi-discrete, and fully discrete levels. We subsequently address the question of discretize-then-optimize versus optimize-then-discrete for both semi-discretization and time integration, by characterizing the commutativity of discretize-then-optimize methods versus optimize-then-discretize methods uniquely in terms of an adjoint-variational quadratic conservation law. For Galerkin semi-discretizations and one-step time integration methods in particular, we explicitly construct these commuting methods by using structure-preserving discretization techniques.
description: To appear: Journal of Nonlinear Science
Piecewise Contractions
Creators: name: Jain, Sakshi
name: Liverani, Carlangelo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We study piecewise injective, but not necessarily globally injective, contracting maps on a compact subset of \(\bR^d\). We prove that generically the attractor and the set of discontinuities of such a map are disjoint, and hence the attractor consists of periodic orbits. In addition, we prove that piecewise injective contractions are generically topologically stable.
Observation of coexisting weak localization and superconducting fluctuations in strained Sn1-xInxTe thin films
Creators: name: Wang, Jiashu
name: Powers, William
name: Zhang, Zhan
name: Smith, Michael
name: McIntosh, Bradlee J.
name: Bac, Seul-Ki
name: Riney, Logan
name: Zhukovskyi, Maksym
name: Orlova, Tatyana
name: Rokhinson, Leonid P.
name: Hsu, Yi-Ting
name: Liu, Xinyu
name: Assaf, Badih A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Topological superconductors have attracted tremendous excitement as they are predicted to host Majorana zero modes that can be utilized for topological quantum computing. Candidate topological superconductor Sn1-xInxTe thin films (0
description: Manuscript in review
The Impact of Feedback on Disk Galaxy Scaling Relations
Creators: name: Dutton, Aaron A.
name: Bosch, Frank C. van den
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use a disk formation model to study the effects of galactic outflows (a.k.a. feedback) on the rotation velocity - stellar mass - disk size, gas fraction - stellar mass, and gas phase metalicity - stellar mass scaling relations of disk galaxies. We show that models without outflows are unable to explain these scaling relations, having both the wrong slopes and normalization. The problem can be traced to the model galaxies having too many baryons. Models with outflows can solve this "over-cooling" problem by removing gas before it has time to turn into stars. Models with both momentum and energy driven winds can reproduce the observed scaling relations. However, these models predict different slopes which, with better observations, may be used to discriminate between these models.
description: 7 pages, 2 figures. To appear in proceedings of "Galaxy Evolution: Emerging Insights and Future Challenges", November 11-14, 2008, The University of Texas at Austin
Spectral segmentation based dimension reduction for hyperspectral image classification
Creators: name: Siddiqa, Ayasha
name: Islam, Md. Rashedul
name: Ibn Afjal, Masud
Publisher: name: Taylor & Francis
Year: 2022
Subjects: Space Science
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Mathematical Sciences not elsewhere classified

description: Hyperspectral images (HSI) contain a wide range of information, the most prominent technology for observing the earth. However, using an original HSI high-dimensional datacube, the classification task faces significant challenges since it has a high computational cost. As a result, dimensionality reduction is indispensable. A dimension reduction method has been introduced in this paper, including feature extraction and feature selection to obtain feature subsets. Minimum Noise Fraction (MNF) is a popular feature extraction method for HSI, requiring a high computational capability. We propose a segmented MNF that divides the complete HSI into groups utilising normalised cross-cumulative residual entropy (nCCRE). An nCCRE-based feature selection is also employed to improve the quality of the chosen features using the max-relevancy min-redundancy measure. The support vector machine (SVM) classifier is used on two real HSI to evaluate the efficiency of the extracted subsets.
OVQAT HAZIM QILISH ORGANLARI SISTEMASINING GISTOMORFOLOGIK TUZILISHI VA ÁHAMIYATI.
Creators: name: Muratbava, Biybimaryam
name: Kuanishbaeva, Gùlbazar
Publisher: name: Zenodo
Year: 2024

description: Ovqat hazm qilish organlari kompleksi eng qadimgi va ko‘plab organlarni o‘z ichiga oluvchi eng massiv sistemadir. Bu organlar atrof-muhitdan ovqat moddalar va suvni qabul qilish, ovqat moddalarni mexanik va biokimyoviy ishlash natijasida parchalanishi, kerakli oziqa va mineral moddalar hamda suvni qon va limfaga so‘rilishi, keraksiz moddalarni tashqi muhitga chiqarilishi uchun xizmat qiladi. Tuzilishiga ko‘ra ovqat hazm qilish organlari bezlarga ega bo‘lgan naydir. Bu nayning ikki uchi ochiq bo‘lgani uchun ichki yuzasini tana yuzasining davomi, ichidagi massani tashqi muhit, ovqat hazm qilish vazifasini esa organizmning tashqi muhit bilan aloqalaridan biri, deb qarash lozim.