cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Space is a participant : strategies of activation and presence in the contemporary practice of Brian Jungen
Creators: name: Ryner, Denise
Publisher: name: University of British Columbia
Year: 2014

description: Erasure and dislocation have proven to be effective catalysts for the work Court (2004) and the unrealized work The Treaty, both by Dane-zaa/Canadian artist Brian Jungen. Jungen's large-scale and multi-sited installations collapse and map diverse sites onto each other in order to engage with space as an element activated by labour, marginality, exploitation, ritual and presence. The site of Jungen's 2004 installation Court, was a gallery in a former garment sweatshop in Harlem, New York. Court's activation by Harlem's spaces of leisure and labour such as the basketball surface, the factory floor and the art gallery, gave form to local narratives of marginalization, exploitation and racism, thereby complicating exhibition viewers' assumptions of exclusion from Jungen's critiques. Similarly, Jungen's proposed work in 2006 for the Tate Modern in London entitled The Treaty intended to link the artist's home near Fort St. John in northeastern British Columbia to England by invoking a space that, through an 1899 treaty known as No. 8, facilitated the loss of sovereignty incurred by Jungen's indigenous ancestors and was shaped by the territorial claims committed in the name of the British monarchy. The production of space is often taken up by social art practices —such as relational and participatory art— as a means of critique and outreach. However, their tendency to delimit space as a secondary component disrupts the full realization of these works of art. In order to argue the merits of collaborating with space over its instrumentalization or circumscription, Jungen's work is dialectically juxtaposed with the deployment of spatial strategies of redress by artist Rebecca Belmore, the Situationists in 1960s Paris. Furthermore, by comparing the activated presence of space in Jungen's site specific work with strategies of Indigenous resistance and sovereignty including active presence, transmotion, interanimation, and sovenance outlined in the work of Gerald Vizenor, Keith H. Basso and the counter-mapping of the Stó:lō Nation in Canada this thesis proposes that space as an actor can expand the definition of participation in art.
Electroweak reactions with light nuclei
Creators: name: Bacca, Sonia
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The investigation of light nuclei with ab-initio methods provides an optimal setting to probe our knowledge on nuclear forces, because the few-nucleon problem can be solved accurately. Nucleons interact not only in pairs but also via many-body forces. Theoretical efforts need to be taken towards the identification of nuclear observables sensitive to the less known many-nucleon forces. Electromagnetic reactions can potentially provide useful information on this. We present results on photo-absorption and electron scattering off light nuclei, emphasizing the role of three-body forces and the comparison with experimental data. On the other hand, reactions induced by weak probes, like neutrino interactions with nucleonic matter, are relevant to astrophysics and can be calculated with few-body techniques. In this case, since often no experiment is possible, ab-initio predictions provide valuable input for astrophysical simulations.
description: 17 pages, 17 figures, Proceedings of the 19th International IUPAP Conference on Few-Body Problems in Physics, Aug. 31 - Sept. 5, 2009, Bonn, Germany
Radial-orbit instability in modified Newtonian dynamics
Creators: name: Nipoti, Carlo
name: Ciotti, Luca
name: Londrillo, Pasquale
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The stability of radially anisotropic spherical stellar systems in modified Newtonian dynamics (MOND) is explored by means of numerical simulations performed with the N-body code N-MODY. We find that Osipkov-Merritt MOND models require for stability larger minimum anisotropy radius than equivalent Newtonian systems (ENSs) with dark matter, and also than purely baryonic Newtonian models with the same density profile. The maximum value for stability of the Fridman-Polyachenko-Shukhman parameter in MOND models is lower than in ENSs, but higher than in Newtonian models with no dark matter. We conclude that MOND systems are substantially more prone to radial-orbit instability than ENSs with dark matter, while they are able to support a larger amount of kinetic energy stored in radial orbits than purely baryonic Newtonian systems. An explanation of these results is attempted, and their relevance to the MOND interpretation of the observed kinematics of globular clusters, dwarf spheroidal and elliptical galaxies is briefly discussed.
description: 9 pages, 4 figures, accepted for publication in MNRAS
Marketing Analysis of the Pharmaceutical Industry
Creators: name: Enos, Peter
Publisher: name: figshare
Year: 2021
Subjects: subject: 111504 Pharmaceutical Sciences
subject: FOS: Clinical medicine
subject: 150502 Marketing Communications
subject: FOS: Economics and business

description: The pharmaceutical industry includes companies involved in the manufacturing and development of prescription drugs and over- the-counter products that are used to prevent illnesses in humans or animals (Oliver, 2017). The market structure of the pharmaceutical industry is best described as an oligopoly in which a few major firms have control of a substantial portion of operational market share (Craig, 1995).Marketing strategy play a substantial role in differentiating pharmaceutical portfolios of major firms due to rising competition from generic manufacturing firms (Loo, 2017). Many major pharmaceutical companies operate globally but are heavily regulated due to the restriction of direct-to-consumer-advertising in all countries except the United States and New Zealand (Ham, 2008). Ultimately, an effective and appropriate marketing strategy is essential in order to remain profitable in the pharmaceutical industry.This marketing analysis will focus on the top three publicly traded pharmaceutical companies – 1) Johnson and Johnson (J&J); 2) Pfizer Inc.; and 3) Merck and Co. Inc. (Oliver, 2017). The analysis within this paper will discuss and examine the marketing strategies employed by the major players in the pharmaceutical industry and will utilize the concepts of Ansoff’s Strategies, Borden’s Marketing Mix, and McCarthy’s Four P’s. Lastly, the paper will provide an overview of the market segments and target markets for the pharmaceutical industry.
Constraints for twist-two alien operators in QCD
Creators: name: Falcioni, G.
name: Herzog, F.
name: Moch, S.
name: Van Thurenhout, Sam
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2024
Subjects: subject: 530
subject: Higher-Order Perturbative Calculations
subject: Parton Distributions
subject: Renormalization and Regularization

description: Parton evolution equations in QCD are controlled by the anomalous dimensions of gauge-invariant twist-two spin-N quark and gluon operators. Under renormalization, these mix with gauge-variant operators of the same quantum numbers, referred to as alien operators. Our work addresses the systematic study of these alien operators at arbitrary spin N, using generalized BRST symmetry relations to derive their couplings and Feynman rules at all values of N. We observe how the all-N structure of the generalized (anti-)BRST constraints relates the couplings of alien operators with n + 1 gluons to those with n gluons. Realizing a bootstrap, we present all one-loop results necessary for performing the operator renormalization up to four loops in QCD.
Zur Rolle von Krankheit und Verwundung in den militärischen Fachschriften der griechisch-römischen Antike
Creators: name: Frisch, Magnus
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Krankheit und Verwundung gehörten in der Antike zum Alltag der Soldaten. Die militäri­sche Fachschriftstellerei der Antike hat sich aus verschiedenen Blickwinkeln und mit unter­schiedlichen Zielstellungen mit zahlreichen Aspekten des Militärwesens ihrer Zeit befasst. Der vorliegende Beitrag untersucht deshalb die Behandlung von Krankheit und Verwun­dung in den griechischen und römischen militärischen Fachschriften vom 4. Jh. v. Chr. bis ins 6. Jh. n. Chr. Aufgrund der spärlichen Forschungsliteratur zu diesem Thema steht die vergleichende Quellenanalyse der erhaltenen militärischen Fachschriften dieses Zeitraums im Vordergrund. Ein kurzer Überblick über die literarische Gattung „Antike militärische Fach­schriften“ sowie über die Entwicklung der Militärmedizin in der griechisch-römischen Antike bietet den nötigen Bezugsrahmen für die historische und literaturhistorische Einord­nung der untersuchten Quellen. Diseases and wounds were part of a soldier‘s everyday life in Greco-Roman antiquity. Ancient military manuals dealt with numerous aspects of contemporary military affairs from different perspectives and with various objectives. Therefore, this paper analyses how ancient Greek and Roman military manuals between the fourth century BC and the sixth century AD deal with diseases and wounds in the military. Due to scarce research literature on this topic the present paper focuses on the analysis of the surviving military manuals from this period. A brief overview of ancient military manuals as a literary genre as well as of the development of the ancient military medicine provides an historical and literary historical reference framework for the source analysis.
description: Göttinger Forum für Altertumswissenschaft, Bd. 24 Nr. 1 (2021): Göttinger Forum für Altertumswissenschaft
Enhancing security in network-on-chip architecture with wireless interconnects
Creators: name: Kondoth, Lashmi
Publisher: name: Macquarie University
Year: 2023
Subjects: classificationCode: 460407
subject: System and network security

description: Recent advancements in integrated circuit technology have led to the integration of multiple embedded cores on a single chip resulting in the advent of Network on Chip (NoC). As this technology became widespread, various kinds of NoC architectures were introduced. Wireless NoC technology has emerged as a solution to overcome the limitations of conventional NoC systems over long-distance communication with multiple processing cores. However, with the introduction of shared wireless interconnects with the NoC topology, potential attack points have also proliferated, targeting confidentiality, integrity, and system availability. The interconnected nature of wireless NoC makes it vulnerable to security attacks such as Denial of Service (DoS).The thesis examines DoS based spoofing attacks specific to NoC wireless interconnects and proposes a comprehensive security countermeasure for securing wireless interfaces against such attacks. The proposed countermeasure uses a detection algorithm and a defense mechanism to detect, identify and isolate the source of the attack. Extensive simulation experiments for the proposed countermeasure architecture were conducted, and our results demonstrate that our proposed solution is very effective in detecting and isolating DoS based spoofing attacks.Overall, this thesis makes innovative contributions to our understanding of security vulnerabilities in NoC with a particular focus on NoC wireless interconnects. The thesis also contributes by proposing a comprehensive countermeasure to safeguard against novel types of DoS and spoofing attacks on NoC wireless interconnects.
Stone Duality for Skew Boolean Algebras with Intersections
Creators: name: Bauer, Andrej
name: Cvetko-Vah, Karin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Rings and Algebras (math.RA)
subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 06E15 (Primary) 03G05 (Secondary)

description: We extend Stone duality between generalized Boolean algebras and Boolean spaces, which are the zero-dimensional locally-compact Hausdorff spaces, to a non-commutative setting. We first show that the category of right-handed skew Boolean algebras with intersections is dual to the category of surjective etale maps between Boolean spaces. We then extend the duality to skew Boolean algebras with intersections, and consider several variations in which the morphisms are restricted. Finally, we use the duality to construct a right-handed skew Boolean algebra without a lattice section.
ALMA North American Integration Center Front-End Test System
Creators: name: Ediss, Geoffrey A.
name: Crabtree, Joshua
name: Crady, Kirk
name: Gaines, Erik
name: McLeod, Morgan
name: Morris, Greg
name: Williams, Rick
name: Perfetto, Antonio
name: Webber, John
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Atacama Large Millimeter/submillimeter (ALMA) Array Front End (FE) system is the first element in a complex chain of signal receiving, conversion, processing and recording. 70 Front Ends will be required for the project. The Front End is designed to receive signals in ten different frequency bands. In the initial phase of operations, the antennas will be fully equipped with six bands. These are Band 3 (84-116 GHz), Band 4 (125-163 GHz), Band 6 (211-275 GHz), Band 7 (275-373 GHz), Band 8 (385-500 GHz) and Band 9 (602-720 GHz). It is planned to equip the antennas with the missing bands at a later stage of ALMA operations, with a few Band 5 (163-211 GHz) and Band 10 (787-950 GHz) receivers in use before the end of the construction project. The ALMA Front End is far superior to any existing receiver systems; spin-offs of the ALMA prototypes are leading to improved sensitivities in existing millimeter and submillimeter observatories. The Front End units are comprised of numerous elements, produced at different locations in Europe, North America and East Asia and are integrated at several Front End integration centers (FEIC) to insure timely delivery of all the units to Chile. The North American FEIC (NA FEIC) is at the National Radio Astronomy Observatory facility in Charlottesville, Virginia, USA. This paper describes the design and performance of the test set used at the NA FEIC to check the performance of the Front Ends, following integration and prior to shipment to Chile.
description: Journal of Infrared, millimeter and Teraherz waves 2010
A closed form for the electrostatic interaction between two rod-like charged objects
Creators: name: Askari, M.
name: Abouie, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have calculated the electrostatic interaction between two rod-like charged objects with arbitrary orientations in three dimensions. we obtained a closed form formula expressing the interaction energy in terms of the separation distance between the centers of the two rod-like objects, $r$, their lengths (denoted by $2l_1$ and $2l_2$), and their relative orientations (indicated by $θ$ and $ϕ$). When the objects have the same length ($2l_1=2l_2=l$), for particular values of separations, i.e for $r\leq0.8 l$, two types of minimum are appeared in the interaction energy with respect to $θ$. By employing the closed form formula and introducing a scaled temperature $t$, we have also studied the thermodynamic properties of a one dimensional system of rod-like charged objects. For different separation distances, the dependence of the specific heat of the system to the scaled temperature has been studied. It is found that for $r<0.8 l$, the specific heat has a maximum.
description: 10 pages, 9 figures, 1 table, Accepted by J. Phys.: Condens. Matter
Candidates' ethnic backgrounds and voter choice in elections
Creators: name: Murakami, Go
Publisher: name: University of British Columbia
Year: 2014

description: Do candidates' ethnic backgrounds matter in elections? More precisely, do they change voters' perceptions about the candidates, and ultimately change their vote choice? If so, in what way and how much? And perhaps more importantly, why? This doctoral thesis attempts to answer these questions using experimental and observational election surveys in Japan and Canada. In the experiments, I aim to estimate causal effects of candidates' ethnic minority status on vote choice, test three relevant theories by examining three moderated effects, and propose two causal mechanisms. With a Canadian Federal election survey merged with candidate background data, I examine whether the findings in the experiments hold in real electoral contexts. This research points to three major findings. First, the estimated average causal effects of candidates' ethnic minority backgrounds were negative. The experiments suggest an approximately 6 percentage point drop when the ethnicity of the target candidate changes from majority to minority backgrounds. Second, two important voter heterogeneities for this effect are repeatedly found. As implied by the two relevant theories, voters who have negative affect and attitudes towards ethnic minorities, and those who oppose ethnically relevant policies that benefit ethnic minority groups, were much less likely to vote for an ethnic minority candidate. Third, in the experiments, some evidence for a trait or affect-driven mechanism was found, while more consistent support for a relevant policy preference cue mechanism was observed in both countries. The former mechanism highlights the importance of multiple candidate contests in the experiments, as voters improved their candidate impressions and affective reactions to the opponent(s) rather than devaluing the ethnic minority candidate. The latter mechanism identifies specifically what the candidates' ethnic minority status means to voters. It suggests that some voters do not vote for an ethnic minority candidate because they use ethnicity to estimate the policy preference of the candidate on the ethnically relevant policy dimension. Thus overall, candidates' ethnicity influences vote choice at a modest level, but its effect size varies across voters with different affective orientations and attitudes, and so the process is more complex than straightforward.
In vitro interactions between the ectomycorrhizal Pisolithus tinctorius and the saprotroph Hypholoma fasciculare fungi: morphological aspects and volatile production
Creators: name: Baptista, Paula
name: de Pinho, Paula Guedes
name: Moreira, Nathalie
name: Malheiro, Ricardo
name: Reis, Francisca
name: Padrão, Jorge
name: Tavares, Rui
name: Lino-Neto, Teresa
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology

description: Ectomycorrhizal fungi are crucial for forests sustainability. For Castanea sativa, ectomycorrhizal fungus Pisolithus tinctorius is an important mutualist partner. Saprotrophic fungi Hypholoma fasciculare, although used for biocontrol of Armillaria root disease, it negatively affected the interaction between the P. tinctorius and plant host roots, by compromise the formation of P. tinctorius-C. sativa mycorrhizae. In this work, fungal morphology during inhibition of H. fasciculare against P. tinctorius was elucidated. P. tinctorius growth was strongly affected by H. fasciculare, which was significantly reduced after six days of co-culture and become even more significant through time. During this period, P. tinctorius developed vesicles and calcium oxalate crystals, which were described as mechanisms to stress adaption by fungi. H. fasciculare produced different volatile organic compounds in co-cultures over time and differ between single or in dual-species. H. fasciculare highly produced sesquiterpenes (namely, α-muurolene) and nitrogen-containing compounds, which are recognised as having antimicrobial activity.
Neutral mode heat transport and fractional quantum Hall shot noise
Creators: name: Takei, So
name: Rosenow, Bernd
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study nonequilibrium edge state transport in the fractional quantum Hall regime for states with one or several counter-propagating neutral modes. We consider a setup in which the neutral modes are heated by a hot spot, and where heat transported by the neutral modes causes a temperature difference between the upper and lower edges in a Hall bar. This temperature difference is probed by the excess noise it causes for scattering across a quantum point contact. We find that the excess noise in the quantum point contact provides evidence for counter-propagating neutral modes, and we calculate its dependence on both the temperature difference between the edges and on source drain bias.
description: 4 pages, 3 figures
Eat A Rainbow
Creators: name: Bultemeier, Amanda
name: Kena Phimmasen
name: Sicily Bowling
name: Adegoye, Grace
Publisher: name: Zenodo
Year: 2023
Subjects: nutrition education, infographic, fruits, vegetable, immersive learning project.

description: Eat A Rainbow is an infographic; nutrition educational material that presents the benefits of fruit and vegetable consumption. It also contains a recipe for a healthy snack; baked veggie chips. It is one of the deliverables for the Immersive Learning Project and community engagement by the Nutrition and Dietetic students at the Department of Nutrition and Health Sciences at Ball State University in collaboration with the Ross Community Center, Muncie, Indiana.
description: The infographic was designed by the senior Nutrition and Dietetic students of the Nutrition and Dietetic Program at the Department of Nutrition and Health Science, College of Health, Ball State University, Muncie, Indiana. All authors have equal contributions.
Mathieu twining characters for K3
Creators: name: Gaberdiel, Matthias R.
name: Hohenegger, Stefan
name: Volpato, Roberto
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The analogue of the McKay-Thompson series for the proposed Mathieu group action on the elliptic genus of K3 is analysed. The corresponding NS-sector twining characters have good modular properties and satisfy remarkable replication identities. These observations provide strong support for the conjecture that the elliptic genus of K3 carries indeed an action of the Mathieu group M24.
description: 19 pages
Quantum paramagnets on the honeycomb lattice and field-induced Néel order: Possible application to Bi$_3$Mn$_4$O$_{12}$(NO$_3$)
Creators: name: Ganesh, R.
name: Sheng, D. N.
name: Kim, Young-June
name: Paramekanti, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by recent experiments on the spin-3/2 frustrated bilayer honeycomb antiferromagnet Bi$_3$Mn$_4$O$_{12}$(NO$_3$), we study the spin-S Heisenberg model on the honeycomb lattice with various additional exchange interactions which frustrate Néel order. Using spin wave theory, exact diagonalization, and bond operator theory, we consider the effects of (i) second-neighbor exchange, (ii) biquadratic exchange for $S = 3/2$ which leads to an AKLT valence bond solid, and (iii) bilayer coupling which leads to an interlayer dimer solid. We show that the resulting paramagnetic states undergo a transition to Néel order beyond a critical magnetic field. We discuss experimental implications for Bi$_3$Mn$_4$O$_{12}$(NO$_3$).
description: 5 pages, 4 figures; 2 page supplementary material with 1 figure; Longer, updated version: arXiv:1104.0691
Economic Analysis of Pfizer
Creators: name: Enos, Peter
Publisher: name: figshare
Year: 2021
Subjects: subject: 140208 Health Economics
subject: FOS: Economics and business
subject: 111599 Pharmacology and Pharmaceutical Sciences not elsewhere classified
subject: FOS: Clinical medicine
subject: 150399 Business and Management not elsewhere classified

description: Abstract Pfizer is one of the most prominent global pharmaceutical companies operating in the pharmaceutical industry with nine research and development (R&D) centers and over fifty state-of-the art drug manufacturing facilities. With a total R&D budget of $8 billion and $11 billion in pharmaceutical marketing expenditure, Pfizer is able to compete in six comprehensive therapeutic areas and develop four product categories to suit the needs of consumers worldwide. This analysis focuses on the economic performance of Pfizer and discusses key projections and trends that will continue to distinguish Pfizer as a “Top Pharmaceutical Company” for future years. The expansion of its venture capital budget of $600 million will only continue to diversify and expand Pfizer’s prominence, while the projection of an additional $1 billion in increased sales for the following operational year is recommended to be re-invested into further merger & acquisitions (M&A’s) for companies developing biological based disease therapies. Key Words: Pfizer, Pharmaceuticals, Mergers & Acquisitions, Economic Management, Pharmaceutical Marketing, Industry Trends, Corporate Social Responsibility, Drug Development, Healthcare, Financial Analysis, Labor, Wages, Capital, Ethics, Production, Business Operations, Pharmaceutical Supply Chain, and Drug Manufacturing
Fluctuations in Student Understanding of Newton's 3rd Law
Creators: name: Clark, Jessica W.
name: Sayre, Eleanor C.
name: Franklin, Scott V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: We present data from a between-student study on student response to questions on Newton's Third Law given throughout the academic year. The study, conducted at Rochester Institute of Technology, involved students from the first and third of a three-quarter sequence. Construction of a response curve reveals subtle dynamics in student learning not captured by simple pre/post testing. We find a a significant positive effect from direct instruction, peaking at the end of instruction on forces, that diminishes by the end of the quarter. Two quarters later, in physics III, a significant dip in correct response occurs when instruction changes from the vector quantities of electric forces and fields to the scalar quantity of electric potential. Student response rebounds to its initial values, however, once instruction returns to the vector-based topics involving magnetic fields.
description: Proceedings of the 2010 Physics Education Research Conference
Global patterns of antigen receptor repertoire disruption across adaptive immune compartments in COVID-19.
Creators: name: Joseph, Magdalene
name: Wu, Yin
name: Dannebaum, Richard
name: Rubelt, Florian
name: Zlatareva, Iva
name: Lorenc, Anna
name: Du, Zhipei Gracie
name: Davies, Daniel
name: Kyle-Cezar, Fernanda
name: Das, Abhishek
name: Gee, Sarah
name: Seow, Jeffrey
name: Graham, Carl
name: Telman, Dilduz
name: Bermejo, Clara
name: Lin, Hai
name: Asgharian, Hosseinali
name: Laing, Adam G
name: Barrio, Irene  Del Molino Del
name: Monin, Leticia
name: Muñoz-Ruiz, Miguel
name: McKenzie, Duncan R
name: Hayday, Thomas S
name: Francos-Quijorna, Isaac
name: Kamdar, Shraddha
name: Davis, Richard
name: Sofra, Vasiliki
name: Cano, Florencia
name: Theodoridis, Efstathios
name: Martinez, Lauren
name: Merrick, Blair
name: Bisnauthsing, Karen
name: Brooks, Kate
name: Edgeworth, Jonathan
name: Cason, John
name: Mant, Christine
name: Doores, Katie J
name: Vantourout, Pierre
name: Luong, Khai
name: Berka, Jan
name: Hayday, Adrian C
Publisher: name: The Francis Crick Institute
Year: 2022
Subjects: classificationCode: Model organisms
subject: Model organisms
classificationCode: Human Biology & Physiology
subject: Human Biology & Physiology
classificationCode: Immunology
subject: Immunology
subject: FOS: Clinical medicine

description: Whereas pathogen-specific T and B cells are a primary focus of interest during infectious disease, we have used COVID-19 to ask whether their emergence comes at a cost of broader B cell and T cell repertoire disruption. We applied a genomic DNA-based approach to concurrently study the immunoglobulin-heavy (IGH) and T cell receptor (TCR) β and δ chain loci of 95 individuals. Our approach detected anticipated repertoire focusing for the IGH repertoire, including expansions of clusters of related sequences temporally aligned with SARS-CoV-2-specific seroconversion, and enrichment of some shared SARS-CoV-2-associated sequences. No significant age-related or disease severity-related deficiencies were noted for the IGH repertoire. By contrast, whereas focusing occurred at the TCRβ and TCRδ loci, including some TCRβ sequence-sharing, disruptive repertoire narrowing was almost entirely limited to many patients aged older than 50 y. By temporarily reducing T cell diversity and by risking expansions of nonbeneficial T cells, these traits may constitute an age-related risk factor for COVID-19, including a vulnerability to new variants for which T cells may provide key protection.
Phase transitions in topological lattice models via topological symmetry breaking
Creators: name: Burnell, F. J.
name: Simon, Steven H.
name: Slingerland, J. K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study transitions between phases of matter with topological order. By studying these transitions in exactly solvable lattice models we show how universality classes may be identified and critical properties described. As a familiar example to elucidate our results concretely, we describe in detail a transition between a fully gapped achiral 2D $p$-wave superconductor ($p+ip$ for pseudospin up/$p-ip$ for pseudospin down) to an $s$-wave superconductor which we show to be in the 2D transverse field Ising universality class.
Ground and space-based study of two globular cluster CVs: M22 CV1 and M5 V101
Creators: name: Hourihane, A. P.
name: Callanan, P. J.
name: Cool, A. M.
name: Reynolds, M. T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: As a class of compact binaries with large binding energy, cataclysmic variables formed through close encounters play an important role in the dynamical evolution of globular clusters. As part of a systematic search for CVs undergoing dwarf nova eruptions in globular clusters, our 2004 monitoring programme of M22 detected an outburst of the dwarf nova candidate CV1 during May. We implement the ISIS image subtraction routine to obtain a light curve for an outburst of CV1. We present the outburst light curve as well as HST/WFPC2 photometry in the V, U and near ultra-violet (nUV) bands and a Chandra/ACIS-S spectrum of the object. Our results confirm the DN nature of the outburst and the CV status of the object. We also present the results of a ground-based study of another globular cluster CV, M5 V101 - including quiescent medium-resolution WHT/ISIS spectroscopy in the B and R bands, displaying prominent Balmer and HeI emission, and R-band photometry.
description: 12 pages, 11 figures. Accepted for publication in MNRAS
Finding the impetus for linguistic diversification : a causal analysis of the grammatical and semantic broadening of aware
Creators: name: Komova, Ekaterina
Publisher: name: University of British Columbia
Year: 2014

description: The present thesis explores the interrelated linguistic processes of grammatical and semantic broadening as they pertain to the Japanese concept of aware during the initial stages of its development, paying close attention to the 250 year span between the 8th and late 10th centuries which saw its highly limited interjectional use burgeon into the diverse instantiations characteristic of the mid-Heian period (794-1185). As I will argue, it was precisely during this time that aware’s literary usefulness as an interjection motivated a crucial syntactic reanalysis into a bound nominal form that was in turn conducive to its subsequent grammatical diversification, semantic strengthening and even aesthetization. Accordingly, approaching this issue from a strictly functional perspective, I aim to link the linguistic evolution of aware to the growing social import and standardization of Heian poetic practices, taking note of the cross-generic influence between poetry and prose and its effect on aware’s path to diversification. After a brief introduction to the literary and cultural background surrounding the history of aware in Chapter One, I turn to its narrow interjective function in the Kojiki (712), the Nihon shoki (720) and the Man'yōshū (759) in Chapter Two, arguing that it was the very markedness of this linguistic realization that enabled aware to diversify in the first place. In Chapter Three, I then focus on aware’s development as evidenced in the Kokin wakashū (905), using the prose-bound tokens found in the Kana preface to explain the semantic incongruities between the overtly analogous structures found in poetry and relating them to the emergence of aware’s bound nominal form. Chapter Four consequently contextualizes the importance of this development with poetic and prose evidence from the Taketori monogatari (c.901), Ise monogatari (c.930) and Tosa nikki (935). Finally, the Epilogue addresses aware’s status at the turn of the 11th century and discusses the overarching connection between aware’s linguistic evolution and its growing aesthetic status.
A pan-chromatic view of the galaxy cluster XMMU J1230.3+1339 at z=0.975 - Observing the assembly of a massive system
Creators: name: Fassbender, Rene
name: Böhringer, Hans
name: Santos, Joana S.
name: Pratt, Gabriel W.
name: Suhada, Robert
name: Kohnert, Jan
name: Lerchster, Mike
name: Rovilos, Manolis
name: Pierini, Daniele
name: Chon, Gayoung
name: Schwope, Axel D.
name: Lamer, Georg
name: Mühlegger, Martin
name: Rosati, Piero
name: Quintana, Hernan
name: Nastasi, Alessandro
name: de Hoon, Arjen
name: Seitz, Stella
name: Mohr, Joseph J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a comprehensive galaxy cluster study of XMMU J1230.3+1339 based on a joint analysis of X-ray data, optical imaging and spectroscopy observations, weak lensing results, and radio properties for achieving a detailed multi-component view of this newly discovered system at z=0.975. We find an optically very rich and massive system with M200$\simeq$(4.2$\pm$0.8)$\times$10^14 M$\sun$, Tx$\simeq$5.3(+0.7--0.6)keV, and Lx$\simeq$(6.5$\pm$0.7)$\times$10^44 erg/s, for which various widely used mass proxies are measured and compared. We have identified multiple cluster-related components including a central fly-through group close to core passage with associated marginally extended 1.4GHz radio emission possibly originating from the turbulent wake region of the merging event. On the cluster outskirts we see evidence for an on-axis infalling group with a second Brightest Cluster Galaxy (BCG) and indications for an additional off-axis group accretion event. We trace two galaxy filaments beyond the nominal cluster radius and provide a tentative reconstruction of the 3D-accretion geometry of the system. In terms of total mass, ICM structure, optical richness, and the presence of two dominant BCG-type galaxies, the newly confirmed cluster XMMU J1230.3+1339 is likely the progenitor of a system very similar to the local Coma cluster, differing by 7.6 Gyr of structure evolution.
description: 26 pages, 14 color figures, accepted for publication in A&A
Zipping mechanism for force-generation by growing filament bundles
Creators: name: Kuehne, Torsten
name: Lipowsky, Reinhard
name: Kierfeld, Jan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We investigate the force generation by polymerizing bundles of filaments, which form because of short-range attractive filament interactions. We show that bundles can generate forces by a zipping mechanism, which is not limited by buckling and operates in the fully buckled state. The critical zipping force, i.e. the maximal force that a bundle can generate, is given by the adhesive energy gained during bundle formation. For opposing forces larger than the critical zipping force, bundles undergo a force-induced unbinding transition. For larger bundles, the critical zipping force depends on the initial configuration of the bundles. Our results are corroborated by Monte Carlo simulations.
Fermionic vacuum polarization by a cosmic string in de Sitter spacetime
Creators: name: de Mello, E. R. Bezerra
name: Saharian, A. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the fermionic condensate and the vacuum expectation value of the energy-momentum tensor for a massive spinor field in the geometry of a straight cosmic string on background of de Sitter spacetime. By using the Abel-Plana summation formula, we explicitly extract form the expectation values the contribution associated with purely de Sitter space, remaining the expectation values induced by the cosmic string. The latter presents information about de Sitter gravity as well. Because the investigation of the fermionic quantum fluctuations in de Sitter space have been investigated in literature, here we are mainly interested in the cosmic string-induced contributions. For a massless field, the fermionic condensate vanishes and the presence of the string does not break chiral symmetry of the massless theory. Unlike to the case of a scalar field, for a massive fermionic field the vacuum expectation value of the energy-momentum tensor is diagonal and the axial and radial stresses are equal to the energy density. At large distances from the string the behavior of the string-induced parts in the vacuum densities is damping oscillatory with the amplitude decaying as the inverse fourth power of the distance. This is in contrast to the case of flat spacetime, in which the string-induced vacuum densities for a massive field decay exponentially with distance from the string. In the limit of the large curvature radius of de Sitter space we recover the results for a cosmic string in flat spacetime.
description: 25 pages, 3 figures
Trust through art and its practice : a/r/tography study
Creators: name: Gillard, Takako
Publisher: name: University of British Columbia
Year: 2014

description: Beginning with art as life and art practice as living inquiry , my investigation starts with the question, How can we trust each other through art and its practice? Throughout my Art-based research, A/r/tography study, I examine how I deal with obstacles in my life by looking back at my childhood memories and my artistic practice. I have always been interested in dialogic relationships with others. My past experiences guide me in understanding reciprocal relationships among diverse people who live in multicultural communities. This interest has led me to analyze how the Great East Japan Earthquake that hit Tohoku on March 11, 2011 affected me as a Japanese immigrant. This thesis includes: autobiographic narratives; the visit to Tohoku reflected in my art practice; stories of an artist, Linda Ohama, a Japanese Canadian filmmaker who supports Tohoku people through her art and creative process; and my past art practices. This collection of work (method) represents my own tsunamis as I face privilege, responsibility and respect that reciprocate with my feelings of trust. Tsunami, as a metaphor of life, is a central theme. The problem I have is that I often distrust myself when I encounter obstacles in my life. As I inquire more deeply through my art-based research—conceptually, spiritually, and theoretically—I come to understand that each experience of distrust I have had in the past is an evolution, part of my own tsunamis within which I re-examine the meaning of life, personal values, and humanity. There I learn from the differences between myself and others. This thesis is presented as an event, which includes a series of my own tsunamis, divided into four exhibitions. I welcome and invite you as a reader to become a participant.
Geometry of log-concave Ensembles of random matrices and approximate reconstruction
Creators: name: Adamczak, Radosław
name: Latała, Rafał
name: Litvak, Alexander E.
name: Pajor, Alain
name: Tomczak-Jaegermann, Nicole
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Functional Analysis (math.FA)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: Primary 52A23, 46B06, 46B09, 60E15 Secondary 15B52, 94B75

description: We study the Restricted Isometry Property of a random matrix $Γ$ with independent isotropic log-concave rows. To this end, we introduce a parameter $Γ_{k,m}$ that controls uniformly the operator norm of sub-matrices with $k$ rows and $m$ columns. This parameter is estimated by means of new tail estimates of order statistics and deviation inequalities for norms of projections of an isotropic log-concave vector.
Linear-algebraic list decoding of folded Reed-Solomon codes
Creators: name: Guruswami, Venkatesan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Folded Reed-Solomon codes are an explicit family of codes that achieve the optimal trade-off between rate and error-correction capability: specifically, for any $\eps > 0$, the author and Rudra (2006,08) presented an $n^{O(1/\eps)}$ time algorithm to list decode appropriate folded RS codes of rate $R$ from a fraction $1-R-\eps$ of errors. The algorithm is based on multivariate polynomial interpolation and root-finding over extension fields. It was noted by Vadhan that interpolating a linear polynomial suffices if one settles for a smaller decoding radius (but still enough for a statement of the above form). Here we give a simple linear-algebra based analysis of this variant that eliminates the need for the computationally expensive root-finding step over extension fields (and indeed any mention of extension fields). The entire list decoding algorithm is linear-algebraic, solving one linear system for the interpolation step, and another linear system to find a small subspace of candidate solutions. Except for the step of pruning this subspace, the algorithm can be implemented to run in {\em quadratic} time. The theoretical drawback of folded RS codes are that both the decoding complexity and proven worst-case list-size bound are $n^{Ω(1/\eps)}$. By combining the above idea with a pseudorandom subset of all polynomials as messages, we get a Monte Carlo construction achieving a list size bound of $O(1/\eps^2)$ which is quite close to the existential $O(1/\eps)$ bound (however, the decoding complexity remains $n^{Ω(1/\eps)}$). Our work highlights that constructing an explicit {\em subspace-evasive} subset that has small intersection with low-dimensional subspaces could lead to explicit codes with better list-decoding guarantees.
description: 16 pages. Extended abstract in Proc. of IEEE Conference on Computational Complexity (CCC), 2011
On Abelian Gauge Symmetries and Proton Decay in Global F-theory GUTs
Creators: name: Grimm, Thomas W.
name: Weigand, Timo
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The existence of abelian gauge symmetries in four-dimensional F-theory compactifications depends on the global geometry of the internal Calabi-Yau fourfold and has important phenomenological consequences. We study conceptual and phenomenological aspects of such U(1) symmetries along the Coulomb and the Higgs branch. As one application we examine abelian gauge factors arising after a certain global restriction of the Tate model that goes beyond a local spectral cover analysis. In SU(5) GUT models this mechanism enforces a global U(1)_X symmetry that prevents dimension-4 proton decay and allows for an identification of candidate right-handed neutrinos. We invoke a detailed account of the singularities of Calabi-Yau fourfolds and their mirror duals starting from an underlying E_8 and E_7 x U(1) enhanced Tate model. The global resolutions and deformations of these singularities can be used as the appropriate framework to analyse F-theory GUT models.
description: 32 pages
Nucleon sigma terms with a variational analysis from Lattice QCD
Creators: name: Barca, Lorenzo
name: Bali, Gunnar
name: Collins, Sara
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2024

description: We determine the nucleon-sigma terms from lattice QCD. We find that the dominant excited state contamination in the nucleon three-point function with a scalar current is due to the transition between the nucleon and a S-wave scattering state of a nucleon and a scalar (sigma) meson. In this proof-of-concept study, we analyse a single $N_f=3$ ensemble with the unphysically large pion mass $M_\pi=429$ MeV. Excited state contamination is substantially reduced compared to the standard method when employing nucleon-sigma type interpolating operators within a generalised eigenvector analysis.
Nonperturbative Results for Yang-Mills Theories
Creators: name: Sannino, Francesco
name: Schechter, Joseph
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Some non perturbative aspects of the pure SU(3) Yang-Mills theory are investigated assuming a specific form of the beta function, based on a recent modification by Ryttov and Sannino of the known one for supersymmetric gauge theories. The characteristic feature is a pole at a particular value of the coupling constant, g. First it is noted, using dimensional analysis, that physical quantities behave smoothly as one travels from one side of the pole to the other. Then it is argued that the form of the integrated beta function g(m), where m is the mass scale, determines the mass gap of the theory. Assuming the usual QCD value one finds it to be 1.67 GeV, which is in surprisingly good agreement with a quenched lattice calculation. A similar calculation is made for the supersymmetric Yang-Mills theory where the corresponding beta function is considered to be exact.
description: RevTeX, 2colmuns, 6 pages and 7 figures