cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Vacuum correlators at short distances from lattice QCD
Creators: name: Cè, Marco
name: Harris, Tim
name: Meyer, Harvey B.
name: Toniato, Arianna
name: Török, Csaba
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Non-perturbatively computing the hadronic vacuum polarization at large photon virtualities and making contact with perturbation theory enables a precision determination of the electromagnetic coupling at the $Z$ pole, which enters global electroweak fits. In order to achieve this goal ab initio using lattice QCD, one faces the challenge that, at the short distances which dominate the observable, discretization errors are hard to control. Here we address challenges of this type with the help of static screening correlators in the high-temperature phase of QCD, yet without incurring any bias. The idea is motivated by the observations that (a) the cost of high-temperature simulations is typically much lower than their vacuum counterpart, and (b) at distances $x_3$ far below the inverse temperature $1/T$, the operator-product expansion guarantees the thermal correlator of two local currents to deviate from the vacuum correlator by a relative amount that is power-suppressed in $(x_3\:T)$. The method is first investigated in lattice perturbation theory, where we point out the appearance of an O$(a^2 \log(1/a))$ lattice artifact in the vacuum polarization with a prefactor that we calculate. It is then applied to non-perturbative lattice QCD data with two dynamical flavors of quarks. Our lattice spacings range down to 0.049 fm for the vacuum simulations and down to 0.033 fm for the simulations performed at a temperature of 250 MeV.
description: 32 pages, 8 figures, 6 tables
A simple proof of Kaijser's unique ergodicity result for hidden Markov $α$-chains
Creators: name: Kochman, Fred
name: Reeds, Jim
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J10 (Primary) 60J05, 60F99 (Secondary)

description: According to a 1975 result of T. Kaijser, if some nonvanishing product of hidden Markov model (HMM) stepping matrices is subrectangular, and the underlying chain is aperiodic, the corresponding $α$-chain has a unique invariant limiting measure $λ$. Here the $α$-chain $\{α_n\}=\{(α_{ni})\}$ is given by \[α_{ni}=P(X_n=i| Y_n,Y_{n-1},...),\] where $\{(X_n,Y_n)\}$ is a finite state HMM with unobserved Markov chain component $\{X_n\}$ and observed output component $\{Y_n\}$. This defines $\{α_n\}$ as a stochastic process taking values in the probability simplex. It is not hard to see that $\{α_n\}$ is itself a Markov chain. The stepping matrices $M(y)=(M(y)_{ij})$ give the probability that $(X_n,Y_n)=(j,y)$, conditional on $X_{n-1}=i$. A matrix is said to be subrectangular if the locations of its nonzero entries forms a cartesian product of a set of row indices and a set of column indices. Kaijser's result is based on an application of the Furstenberg--Kesten theory to the random matrix products $M(Y_1)M(Y_2)... M(Y_n)$. In this paper we prove a slightly stronger form of Kaijser's theorem with a simpler argument, exploiting the theory of e chains.
description: Published at http://dx.doi.org/10.1214/105051606000000367 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
A physiologically realistic virtual patient database for the study of arterial haemodynamics
Creators: name: Jones, Gareth
name: Parr, Jim
name: Nithiarasu, Perumal
name: Pant, Sanjay
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: This study creates a physiologically realistic virtual patient database (VPD), representing the human arterial system, for the primary purpose of studying the affects of arterial disease on haemodynamics. A low dimensional representation of an anatomically detailed arterial network is outlined, and a physiologically realistic posterior distribution for its parameters is constructed through a Bayesian approach. This approach combines both physiological/geometrical constraints and the available measurements reported in the literature. A key contribution of this work is to present a framework for including all such available information for the creation of virtual patients (VPs). The Markov Chain Monte Carlo (MCMC) method is used to sample random VPs from this posterior distribution, and the pressure and flow-rate profiles associated with the VPs are computed through a model of pulse wave propagation. This combination of the arterial network parameters (representing the VPs) and the haemodynamics waveforms of pressure and flow-rates at various locations (representing functional response of the VPs) makes up the VPD. While 75,000 VPs are sampled from the posterior distribution, 10,000 are discarded as the initial burn-in period. A further 12,857 VPs are subsequently removed due to the presence of negative average flow-rate. Due to an undesirable behaviour observed in some VPs -- asymmetric under- and over-damped pressure and flow-rate profiles in the left and right sides of the arterial system -- a filter is proposed for their removal. The final VPD has 28,868 subjects. It is shown that the methodology is appropriate by comparing the VPD statistics to those reported in literature across real populations. A good agreement between the two is found while respecting physiological/geometrical constraints. The pre-filter database is made available at https://doi.org/10.5281/zenodo.4549764.
Registered Report - Anomalous perception in a Ganzfeld condition: A meta-analysis of more than 40 years investigation
Creators: name: Tressoldi, Patrizio
name: Storm, Lance
Publisher: name: figshare
Year: 2021
Subjects: subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology

description: Data, statistics syntax, and supplementary results related to the Registered Report:"Anomalous perception in a Ganzfeld condition: a meta-analysis of more than 40 years investigation"
Small group elicitation session on ditransitives
Creators: name: Massoma, Achille
name: Borchardt, Nadine
name: Lionnet, Florian
name: Hyman, Larry M.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: abb

description: Ditransitive sentences: "He gives the bag to the child", "He cooks the food for the child"; "He gives the bag to him/ him the bag", "He cooks food for him/ him food"; "He gives it to him/ him it", "He cook it for him/ him it"; "He gives the spoon to the elephant", "He cooks the spoon for the elephant"; "He gives the spoon to it."; "He cooks the spoon for it"; "He gives it (the spoon) to it (the elephant)", "He cooks it for it"; "He gives the spoons to the elephants/ the elephants the spoons", "He cooks the spoons for the elephants"; "He gives the spoons to them", "He cooks the spoons for them".
Convolutional Sparse Coding Fast Approximation with Application to Seismic Reflectivity Estimation
Creators: name: Pereg, Deborah
name: Cohen, Israel
name: Vassiliou, Anthony A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In sparse coding, we attempt to extract features of input vectors, assuming that the data is inherently structured as a sparse superposition of basic building blocks. Similarly, neural networks perform a given task by learning features of the training data set. Recently both data-driven and model-driven feature extracting methods have become extremely popular and have achieved remarkable results. Nevertheless, practical implementations are often too slow to be employed in real-life scenarios, especially for real-time applications. We propose a speed-up upgraded version of the classic iterative thresholding algorithm, that produces a good approximation of the convolutional sparse code within 2-5 iterations. The speed advantage is gained mostly from the observation that most solvers are slowed down by inefficient global thresholding. The main idea is to normalize each data point by the local receptive field energy, before applying a threshold. This way, the natural inclination towards strong feature expressions is suppressed, so that one can rely on a global threshold that can be easily approximated, or learned during training. The proposed algorithm can be employed with a known predetermined dictionary, or with a trained dictionary. The trained version is implemented as a neural net designed as the unfolding of the proposed solver. The performance of the proposed solution is demonstrated via the seismic inversion problem in both synthetic and real data scenarios. We also provide theoretical guarantees for a stable support recovery. Namely, we prove that under certain conditions the true support is perfectly recovered within the first iteration.
Hamiltonian cosmological perturbation theory with loop quantum gravity corrections
Creators: name: Bojowald, Martin
name: Hernández, Hector H.
name: Kagan, Mikhail
name: Singh, Parampreet
name: Skirzewski, Aureliano
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Cosmological perturbation equations are derived systematically in a canonical scheme based on Ashtekar variables. A comparison with the covariant derivation and various subtleties in the calculation and choice of gauges are pointed out. Nevertheless, the treatment is more systematic when correction terms of canonical quantum gravity are to be included. This is done throughout the paper for one characteristic modification expected from loop quantum gravity.
description: 24 pages, 1 figure
Continuous-time mean-variance efficiency: the 80% rule
Creators: name: Li, Xun
name: Zhou, Xun Yu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Mathematics
subject: FOS: Economics and business
subject: 90A09 (Primary) 93E20 (Secondary)

description: This paper studies a continuous-time market where an agent, having specified an investment horizon and a targeted terminal mean return, seeks to minimize the variance of the return. The optimal portfolio of such a problem is called mean-variance efficient à la Markowitz. It is shown that, when the market coefficients are deterministic functions of time, a mean-variance efficient portfolio realizes the (discounted) targeted return on or before the terminal date with a probability greater than 0.8072. This number is universal irrespective of the market parameters, the targeted return and the length of the investment horizon.
description: Published at http://dx.doi.org/10.1214/105051606000000349 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Η Κριτική του Karl Popper στην Πολιτική Φιλοσοφία του Πλάτωνα
Creators: name: Χαρέλας, Αναστάσιος Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Καρλ Πόππερ
Πλάτωνας
Ανοιχτή κοινωνία Ολοκληρωτισμός
Ιστορικισμός
Karl Popper
Plato
Open society
Totalitarianism
Historicism

description: Στόχος της παρούσας εργασίας είναι η εξέταση και ο σχολιασμός της κριτικής του Karl Popper στην πολιτική φιλοσοφία του Πλάτωνα και η διερεύνηση της βασικής του θέσης ότι ο πλατωνικός πολιτικός στοχασμός μπορεί να θεωρηθεί σε θεωρητικό επίπεδο πρόδρομος των ολοκληρωτικών καθεστώτων του 20ου αιώνα. Επίσης, εξετάζονται οι ιστορικές και πολιτικές συνθήκες που επηρέασαν και διαμόρφωσαν την πολιτική σκέψη και στάση των δύο στοχαστών. Στο πρώτο κεφάλαιο εξετάζεται η επίδραση των κοινωνικοοικονομικών συνθηκών του 5ου και 4ου αιώνα π.Χ. στη διαμόρφωση της προσωπικότητας και της πολιτικής σκέψης του Πλάτωνα. Στο δεύτερο κεφάλαιο παρουσιάζεται και σχολιάζεται η κριτική του Karl Popper στην πλατωνική πολιτική φιλοσοφία. Αυτό γίνεται σε τέσσερις άξονες. Ο πρώτος αφορά τη γοητεία και τις ιστορικιστικές θέσεις του Πλάτωνα, ο δεύτερος την περιγραφική κοινωνιολογία του και τις απόψεις του για την αλλαγή και τη στάση, όπως και για τη φύση και τη σύμβαση, ο τρίτος το πολιτικό του πρόγραμμα και τις απόψεις του για τη δικαιοσύνη, την αρχή της ηγεσίας, το φιλόσοφο-βασιλιά και τον ουτοπισμό του και ο τέταρτος αφορά μια προσπάθεια ερμηνείας της αντιδημοκρατικής του στάσης. Στο τρίτο κεφάλαιο εξετάζεται η ανάγνωση και η ερμηνεία του Πλάτωνα από τον Popper υπό την επίδραση των ιστορικών συνθηκών των αρχών του 20ου αιώνα και η υποδοχή και η συζήτηση της θεωρίας του.
description: The aim of this thesis was to examine and comment on Karl Popper’s critique of Plato’s political philosophy and to study his main position that the Platonic philosophical thought can be considered a forerunner – on a theoretical level – of the totalitarian regimes of the 20th century. Moreover, it broaches the historical and political conditions that affected and formed the political thought and stance of the two thinkers. The first chapter examines the influence of the socioeconomic conditions in the 5th and 4th centuries on the formation of Plato’s personality and political thought. The second chapter presents and comments Karl Popper’s critique of the platonic political philosophy. This happens in four axes. The first axis concerns the Platonic beauty and Plato’s historicist views, the second regards Plato’s descriptive sociology his views on change and stance, nature and convention; the third axis his political program and his views on justice, the principle of leadership, the philosopher king and Plato’s utopianism, while the fourth axis is an effort to interpret Plato’s antidemocratic attitude. The third chapter examines the reading and interpretation of Plato by Popper within the historical conditions at the beginning of the 20th century as well as the reception and discussion of his theory.
Socially Intelligent Interfaces for Increased Energy Awareness in the Home
Creators: name: Karlgren, Jussi
name: Fahlén, Lennart E.
name: Wallberg, Anders
name: Hansson, Pär
name: Ståhl, Olov
name: Söderberg, Jonas
name: Åkesson, Karl-Petter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: This paper describes how home appliances might be enhanced to improve user awareness of energy usage. Households wish to lead comfortable and manageable lives. Balancing this reasonable desire with the environmental and political goal of reducing electricity usage is a challenge that we claim is best met through the design of interfaces that allows users better control of their usage and unobtrusively informs them of the actions of their peers. A set of design principles along these lines is formulated in this paper. We have built a fully functional prototype home appliance with a socially aware interface to signal the aggregate usage of the users peer group according to these principles, and present the prototype in the paper.
Role of electronic structure in photoassisted transport through atomic-sized contacts
Creators: name: Viljas, J. K.
name: Cuevas, J. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study theoretically quantum transport through laser-irradiated metallic atomic-sized contacts. The radiation field is treated classically, assuming its effect to be the generation of an ac voltage over the contact. We derive an expression for the dc current and compute the linear conductance in one-atom thick contacts as a function of the ac frequency, concentrating on the role played by electronic structure. In particular, we present results for three materials (Al, Pt, and Au) with very different electronic structures. It is shown that, depending on the frequency and the metal, the radiation can either enhance or diminish the conductance. This can be intuitively understood in terms of the energy dependence of the transmission of the contacts in the absence of radiation.
description: 7 pages, 7 figures; four new figures added
Note on proton-antiproton suppression in 200 AGeV Au-Au collisions
Creators: name: Renk, Thorsten
name: Eskola, Kari J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the measured nuclear suppression of p + pbar production in 200 AGeV Au-Au collisions at RHIC within radiative energy loss. For the AKK set of fragmentation functions, proton production is dominated by gluons, giving rise to the expectation that the nuclear suppression for p + pbar should be stronger than for pions due to the stronger coupling of gluons to the quenching medium. Using a hydrodynamical description for the soft matter evolution, we show that this is indeed seen in the calculation. However, the expected suppression factors for pions and protons are sufficiently similar that a discrimination with present data is not possible. In the high p_T region above 6 GeV where the contributions of hydrodynamics and recombination to hadron production are negligible, the model calculation is in good agreement with the data on p + pbar suppression.
description: 3 pages, 2 figures, slightly expanded version
Prism international
Creators: name: Prism International
Publisher: name: Vancouver : The Creative Writing Program of the University of British Columbia
Year: 2020

description: The following description is provided by the publisher:
CONTENTS
THE JACOB ZILBER PRIZE FOR SHORT FICTION
JUDGE'S ESSAY
 Casey Plett 6 Pacing
 THE JACOB ZILBER PRIZE WINNERS
Hsien Chong Tan 7 The Last Snow Globe Repairman in the World
 Cassidy McFadzean 68 Victory Day
FICTION
Hilary Ball 20 Hibiscus
Kate Gorton 27 Centralia
Alana Friend Lettner 41 +
Gina Hay 48 Palu di Lechi
Emily Pegg 58 August on the Lake
POETRY
Bess Cooley 18 The Other Side
55 The Witch Court Reporter
Tasha Hefford 19 Though Not Unpleasantly
 Amy LeBlanc 24 I know something you don't know
Annick MacAskill 25 Ketch Harbour
66 Martinique Beach
 Natalie De Paz 26 The Universe Is Quietly Disowning Us All
Marika Prokosh 37 Inheritance
79 Letter from Voyager 2
Catriona Wright 38 NOTES TOWARDS AN ANTHROPOCENE FABLE AT A RUSSIAN SAUNA IN MISSISSAUGA
 Jane Shi 40 Loves'eat
Manahil Bandukwala 44 What's a bit more blood?
Olive Andrews 45 lessons
Heather Christle 46 HALF-NOTE
Leo Boix 54 A Red Horse
 Neil Surkan 57 Late Style
Dominik Parisien 67 my partner makes of me a poem
Natalie Lim 81 Elegy for Opportunity
Contributors 83
Δίγλωσσοι έφηβοι αλβανικής μεταναστευτικής καταγωγής: γλωσσικές επιλογές, πρακτικές και στάσεις
Creators: name: Παντελίδου, Μαρία Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Διγλωσσία
Γλωσσική επιλογή και χρήση
Γλωσσικές στάσεις
Έφηβοι αλβανικής καταγωγής
Bilingualism
Language choice and use
Language attitudes
Adolescents of Albanian descent

description: Η παρούσα έρευνα μελετά ζητήματα γλωσσικών επιλογών, πρακτικών και στάσεων δίγλωσσων εφήβων από αλβανικές μεταναστευτικές οικογένειες που ζουν στην Ελλάδα. Μέσω ημι-δομημένων συνεντεύξεων σε είκοσι εφήβους αλβανικής μεταναστευτικής καταγωγής διερευνώνται οι γλωσσικές τους επιλογές και πρακτικές σε συγκεκριμένους χώρους γλωσσικής χρήσης (οικογένεια, σχολείο, φιλικές συναναστροφές κ.α.) με διάφορους/ες συνομιλητές/τριες (π.χ. γονείς, αδέρφια, φίλοι/ες κ.α.). Επιπρόσθετα, αντικείμενο διερεύνησης είναι και οι στάσεις των συνεντευξιαζόμενων απέναντι στις γλώσσες τους και τη γλωσσική διατήρηση. Στα δεδομένα των συνεντεύξεων αποκαλύπτονται σκέψεις, βιώματα, επιθυμίες και προβληματισμοί των δίγλωσσων εφήβων για τη γλωσσική επιλογή και χρήση και επιπλέον προβάλλεται η σημασία των δύο γλωσσών στη ζωή τους. Η παρούσα έρευνα ρίχνει φως στον τρόπο με τον οποίο διαμορφώνονται και αιτιολογούνται οι γλωσσικές επιλογές, πρακτικές και στάσεις υπό την επίδραση ποικίλων κοινωνιογλωσσικών παραγόντων. Καταδεικνύει γενικότερα τις πολλαπλές και δυναμικές διαστάσεις της διγλωσσίας των εφήβων ως βασικά στοιχεία της κοινωνιογλωσσικής πραγματικότητας και της ταυτότητάς τους.
description: The present research studies issues of language choices, practices and attitudes of bilingual adolescents coming from Albanian immigrant families who live in Greece. It investigates through semi-structured interviews of twenty teenagers of Albanian immigrant descent, their language choices and practices in specific domains (e.g. family, school, friendships etc.) with various interlocutors (e.g. parents, brothers/sisters, friends etc.). Moreover, the objects of research are the attitudes of the interviewees towards their languages and language maintenance. In the data from interviews, thoughts, experiences, desires and concerns of bilingual teenagers about their language choice and use are revealed and, in addition, the importance of the two languages in their lives is highlighted. The present research sheds light on the way language choices, practices and attitudes are formed and reasoned under the effect of sociolinguistic factors. It generally demonstrates the multiple and dynamic dimensions of teenagers’ bilingualism as basic elements of their sociolinguistic reality and identity.
Small group elicitation session on copular constructions
Creators: name: Massoma, Achille
name: Cook, Toni
name: Sandy, Clare S.
name: Hyman, Larry M.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: abb

description: "This person [copula] child", singular and plural, affirmative and negative, present; "This person [copula] child", singular and plural, affirmative and negative, imperfect; "This person [copula] child", singular and plural, affirmative and negative, perfective; "This child [copula] good", singular and plural, affirmative and negative, present and imperfect; "You have to be good", singular and plural, affirmative and negative; "This child [copula] good", singular and plural, affirmative and negative.
On Complex Conjugate Pair Sums and Complex Conjugate Subspaces
Creators: name: Shah, Shaik Basheeruddin
name: Chakka, Vijay Kumar
name: Reddy, Arikatla Satyanarayana
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this letter, we study a few properties of Complex Conjugate Pair Sums (CCPSs) and Complex Conjugate Subspaces (CCSs). Initially, we consider an LTI system whose impulse response is one period data of CCPS. For a given input x(n), we prove that the output of this system is equivalent to computing the first order derivative of x(n). Further, with some constraints on the impulse response, the system output is also equivalent to the second order derivative. With this, we show that a fine edge detection in an image can be achieved using CCPSs as impulse response over Ramanujan Sums (RSs). Later computation of projection for CCS is studied. Here the projection matrix has a circulant structure, which makes the computation of projections easier. Finally, we prove that CCS is shift-invariant and closed under the operation of circular cross-correlation.
description: 4 pages, 2 figures
Counting all dyons in N =4 string theory
Creators: name: Dabholkar, Atish
name: Gomes, Joao
name: Murthy, Sameer
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: For dyons in heterotic string theory compactified on a six-torus, with electric charge vector Q and magnetic charge vector P, the positive integer I = g.c.d.(Q \wedge P) is an invariant of the U-duality group. We propose the microscopic theory for computing the spectrum of all dyons for all values of I, generalizing earlier results that exist only for the simplest case of I=1. Our derivation uses a combination of arguments from duality, 4d-5d lift, and a careful analysis of fermionic zero modes. The resulting degeneracy agrees with the black hole degeneracy for large charges and with the degeneracy of field-theory dyons for small charges. It naturally satisfies several physical requirements including integrality and duality invariance. As a byproduct, we also derive the microscopic (0,4) superconformal field theory relevant for computing the spectrum of five-dimensional Strominger-Vafa black holes in ALE backgrounds and count the resulting degeneracies.
Analysis of Dirac and Weyl points in topological semimetals via oscillation effects
Creators: name: Mikitik, G. P.
name: Sharlai, Yu. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We calculate the extremal cross sectional areas and cyclotron masses for the Fermi-surface pockets in Dirac and Weyl topological semimetals. The calculation is carried out for the most general form of the electron energy bands in the vicinity of the Weyl and Dirac points. Using the obtained formulas, one can find parameters characterizing the Dirac and Weyl electrons in the topological semimetals from appropriate experimental data. As an example, we consider the W1 electrons in TaAs.
description: 6 pages, 4 figures, to be published in Low Temp. Phys
Improving collaboration between ecosystem service communities and the IPBES science-policy platform
Creators: name: C.-L. Washbourne
name: N. Dendoncker
name: S. Jacobs
name: A. Mascarenhas
name: F. De Longueville
name: A. P. E. Van Oudenhoven
name: M. Schröter
name: L. Willemen
name: S. Campagne
name: S.K. Jones
name: M. Garcia-Llorente
name: I. Iniesta-Arandia
name: F. Baró
name: J. Fisher
name: J. Förster
name: C. Jericó-Daminelo
name: J. Lecina-Diaz
name: S. Lavorel
name: B. Lliso
name: C. Montealgre Talero
name: A. Morán-Ordóñez
name: J.V. Roces-Díaz
name: M.A. Schlaepfer
name: J. Van Dijk
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: The end of the first working program of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) provided an opportunity to draw lessons from its work. This perspective paper captures insights from ecosystem services (ES) researchers and practitioners, largely drawing from the European context (referred to herein as ‘ES community’), on this key science–policy interface. We synthesize reflections from a workshop on how (i) IPBES can engage the ES community; (ii) the ES community can engage with IPBES; and (iii) individual scientists can contribute. We note that IPBES constitutes a great advancement towards multidisciplinarity and inclusivity in ES research and practice. Key reflections for IPBES are that funding and visibility at ES research events could be improved, the contribution and selection processes could be more transparent, and communication with experts improved. Key reflections for the ES community include a need to improve policy-relevance by integrating more social scientists, researchers from developing countries, early-career scientists and policy-makers. Key reflections directed towards individual scientists include contributing (pro)actively to science–policy interface initiatives such as IPBES and increasing transdisciplinary research. These reflections intend to contribute to the awareness of challenges and opportunities for institutions, groups and individuals working on ES.
Quasiequilibrium sequences of black-hole--neutron-star binaries in general relativity
Creators: name: Taniguchi, Keisuke
name: Baumgarte, Thomas W.
name: Faber, Joshua A.
name: Shapiro, Stuart L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We construct quasiequilibrium sequences of black hole-neutron star binaries for arbitrary mass ratios by solving the constraint equations of general relativity in the conformal thin-sandwich decomposition. We model the neutron star as a stationary polytrope satisfying the relativistic equations of hydrodynamics, and account for the black hole by imposing equilibrium boundary conditions on the surface of an excised sphere (the apparent horizon). In this paper we focus on irrotational configurations, meaning that both the neutron star and the black hole are approximately nonspinning in an inertial frame. We present results for a binary with polytropic index n=1, mass ratio M_{irr}^{BH}/M_{B}^{NS}=5 and neutron star compaction M_{ADM,0}^{NS}/R_0=0.0879, where M_{irr}^{BH} is the irreducible mass of the black hole, M_{B}^{NS} the neutron star baryon rest-mass, and M_{ADM,0}^{NS} and R_0 the neutron star Arnowitt-Deser-Misner mass and areal radius in isolation, respectively. Our models represent valid solutions to Einstein's constraint equations and may therefore be employed as initial data for dynamical simulations of black hole-neutron star binaries.
description: 5 pages, 1 figure, revtex4, published in Phys.Rev.D
Whiting 1: the youngest globular cluster associated with the Sgr dSph
Creators: name: Carraro, Giovanni
name: Zinn, Robert
name: Bidin, Christian Moni
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recently, Carraro (2005) drew attention to the remarkable star cluster Whiting 1 by showing that it lies about 40 kpc from the Sun and is therefore unquestionably a member of the Galactic halo (b=-60.6 deg.). Its CMD indicated that Whiting 1 is very young (5 Gyrs) for a globular cluster. It is very likely that Whiting 1 originated in a dwarf galaxy that has since been disrupted by the Milky Way. Deep CCD photometry in the BVI pass-bands obtained with the VLT is used to improve the quality of the CMD and to determine the cluster's luminosity function and surface density profile. High-resolution spectrograms obtained with Magellan are used to measure the cluster's radial velocity and to place limits on its possible metallicity. The measurements of distance and radial velocity are used to test the cluster's membership in the stellar streams from the Sgr dSph. From our CMD of Whiting 1, we derive new estimates for the cluster's age (6.5 Gyrs), metallicity ([Fe/H]=-0.65), and distance (29.4 kpc). From echelle spectrograms of three stars, we obtain -130.6 km/s for the cluster's radial velocity and show from measurements of two infra-red CaII lines that the [Fe/H] of the cluster probably lies in the range -1.1 to -0.4. We demonstrate that the position of Whiting 1 on the sky, its distance from the Sun, and its radial velocity are identical to within the errors of both the theoretical predictions of the trailing stream of stars from the Sgr dSph galaxy and the previous observations of the M giant stars that delineate the streams. With the addition of Whiting 1, there is now strong evidence that 6 globular clusters formed within the Sgr dSph.
description: 9 pages, 9 eps figures (some degraded in resolution), in press in Astronomy and Astrophysics. Abstract here below has been shortened to fit in
Charting the Northwest Coast 1857-62: a case study in the use of "Knowledge as Power" in Britain’s Imperial ascendency
Creators: name: Wallace, Richard William
Publisher: name: University of British Columbia
Year: 2009

description: This thesis will deal with the hydrographic survey of the BC coast and the international boundary settlement conducted by HM ships Plumper, Satellite, and Hecate from 1857 to 1863. It will examine the geo-political importance of the pursuit of "knowledge as power" in light of American expansionism and the utilisation of the surveyors as a significant force of law and order; their importance to the social and commercial development of BC; and their contribution to the safety of navigation and the exploration of the BC coast.
High Energy Neutrino Flashes from Far-Ultraviolet and X-ray Flares in Gamma-Ray Bursts
Creators: name: Murase, Kohta
name: Nagataki, Shigehiro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The recent observations of bright optical and x-ray flares by the Swift satellite suggest these are produced by the late activities of the central engine. We study the neutrino emission from far-ultraviolet and x-ray flares under the late internal shock model. We show that the efficiency of pion production in the highest energy is comparable to or higher than the unity, and the contribution from such neutrino flashes to a diffuse very high energy neutrino background can be larger than that of prompt bursts if the total baryonic energy input into flares is comparable to the radiated energy of prompt bursts. These signals may be detected by IceCube and are very important because they have possibilities to probe the nature of flares (the baryon loading, the photon field, the magnetic field and so on).
description: 4 pages, 3 figures, version published in PRL
Characterizing the dust content of disk substructures in TW Hya
Creators: name: Macias, Enrique
name: Guerra-Alvarado, Osmar
name: Carrasco-Gonzalez, Carlos
name: Ribas, Alvaro
name: Espaillat, Catherine C.
name: Huang, Jane
name: Andrews, Sean M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present Atacama Large Millimeter Array (ALMA) observations of TW Hya at 3.1 mm with $\sim50$ milliarcsecond resolution. These new data were combined with archival high angular resolution ALMA observations at 0.87 mm, 1.3 mm, and 2.1 mm. We analyze these multi-wavelength data to infer a disk radial profile of the dust surface density, maximum particle size, and slope of the particle size distribution. Most previously known annular substructures in the disk of TW Hya are resolved at the four wavelengths. Inside the inner 3 au cavity, the 2.1 mm and 3.1 mm images show a compact source of free-free emission, likely associated with an ionized jet. Our multi-wavelength analysis of the dust emission shows that the maximum particle size in the disk of TW Hya is $>1$ mm. The inner 20 au are completely optically thick at all four bands, which results in the data tracing different disk heights at different wavelengths. Coupled with the effects of dust settling, this prevents the derivation of accurate density and grain size estimates in these regions. At $r>20$ au, we find evidence of the accumulation of large dust particle at the position of the bright rings, indicating that these are working as dust traps. The total dust mass in the disk is between 250 and 330 $M_{\oplus}$, which represents a gas-to-dust mass ratio between 50 and 70. Our mass measurement is a factor of 4.5-5.9 higher than the mass that one would estimate using the typical assumptions of large demographic surveys. Our results indicate that the ring substructures in TW Hya are ideal locations to trigger the streaming instability and form new generations of planetesimals.
description: 22 pages, 17 figures, accepted for publication in A&A. Language edited version
Hidden Borcherds symmetries in Z_n orbifolds of M-theory and magnetized D-branes in type 0' orientifolds
Creators: name: Bagnoud, Maxime
name: Carlevaro, Luca
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study T^{11-D-q}xT^q/Z_n orbifold compactifications of 11D supergravity and M-theory by a purely algebraic method. Using the mapping between scalar fields of toroidally compactified maximal supergravity and generators of the U-duality symmetry, we express the orbifold action as a finite order inner automorphism and compute the residual real U-duality algebra surviving the orbifold projection for all dimensions D=1,...,10-q. In D=1, these invariant subalgebras are shown to be described by Borcherds and Kac-Moody algebras with a degenerate Cartan matrix, modded out by their centres and derivations. We further construct an alternative description of the orbifold action in terms of equivalence classes of shift vectors, finding that a root of e_{10} can always be chosen as the class representative in D=1. In the case of Z_2 orbifolds of M-theory descending to type 0' orientifolds, we argue that these roots can be interpreted as pairs of magnetized D9- and D9'-branes ensuring tadpole cancellation. More generally, we provide a classification of all such roots generating Z_n product orbifolds for n<7.
description: 108 pages, v2:Section 9.4 returned to intended position 11, v3:final corrected version published in JHEP
Streaming instability of multiple particle species II -- Numerical convergence with increasing particle number
Creators: name: Schaffer, Noemi
name: Johansen, Anders
name: Lambrechts, Michiel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The streaming instability provides an efficient way of overcoming the growth barriers in the initial stages of the planet formation process. Considering the realistic case of a particle size distribution, the dynamics of the system is altered compared to the outcome of single size models. In order to understand the outcome of the multi-species streaming instability in detail, we perform a large parameter study in terms of particle number, particle size distribution, particle size range, initial metallicity and initial particle scale height. We study vertically stratified systems and determine the metallicity threshold for filament formation. We compare these with a system where the initial particle distribution is unstratified and find that its evolution follows that of its stratified counterpart. We find that change in particle number does not result in significant variation in the efficiency and timing of filament formation. We also see that there is no clear trend for how varying the size distribution in combination with particle size range changes the outcome of the multi-species streaming instability. Finally, we find that an initial metallicity of $Z_{\rm{init}}=0.005$ and $Z_{\rm{init}}=0.01$ both result in similar critical metallicity values for the start of filament formation. Our results show that the inclusion of a particle size distribution into streaming instability simulations, while changing the dynamics as compared to mono-disperse systems, does not result in overall unfavorable conditions for solid growth. We attribute the sub-dominant role of multiple species to the high-density conditions in the midplane, conditions under which also linear stability analysis predict little difference between single and multiple species.
description: 13 pages, 13 figures, 2 tables, accepted to A\&A
Proof of polar ejection fom the close-binary core of the planetary nebula Abell 63
Creators: name: Mitchell, Deborah L.
name: Pollacco, Don
name: O'Brien, T. J.
name: Bryce, M.
name: Lopez, J. A.
name: Meaburn, J.
name: Vaytet, N. M. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first detailed kinematical analysis of the planetary nebula Abell 63, which is known to contain the eclipsing close-binary nucleus UU Sge. Abell 63 provides an important test case in investigating the role of close-binary central stars on the evolution of planetary nebulae. Longslit observations were obtained using the Manchester echelle spectrometer combined with the 2.1-m San Pedro Martir Telescope. The spectra reveal that the central bright rim of Abell 63 has a tube-like structure. A deep image shows collimated lobes extending from the nebula, which are shown to be high-velocity outflows. The kinematic ages of the nebular rim and the extended lobes are calculated to be 8400+/-500 years and 12900+/-2800 years, respectively, which suggests that the lobes were formed at an earlier stage than the nebular rim. This is consistent with expectations that disk-generated jets form immediately after the common envelope phase. A morphological-kinematical model of the central nebula is presented and the best-fit model is found to have the same inclination as the orbital plane of the central binary system; this is the first proof that a close-binary system directly affects the shaping of its nebula. A Hubble-type flow is well-established in the morphological-kinematical modelling of the observed line profiles and imagery. Two possible formation models for the elongated lobes of Abell 63 are considered (1) a low-density, pressure-driven jet excavates a cavity in the remnant AGB envelope; (2) high-density bullets form the lobes in a single ballistic ejection event.
description: 11 pages, 8 figures, accepted by MNRAS for publication
Enhancing the conductance of a two-electron nanomechanical oscillator
Creators: name: Johansson, J. R.
name: Mourokh, L. G.
name: Smirnov, A. Yu.
name: Nori, Franco
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We consider electron transport through a mobile island (i.e., a nanomechanical oscillator) which can accommodate one or two excess electrons and show that, in contrast to immobile islands, the Coulomb blockade peaks, associated with the first and second electrons entering the island, have different functional dependences on the nano-oscillator parameters when the island coupling to its leads is asymmetric. In particular, the conductance for the second electron (i.e., when the island is already charged) is greatly enhanced in comparison to the conductance of the first electron in the presence of an external electric field. We also analyze the temperature dependence of the two conduction peaks and show that these exhibit different functional behaviors.
description: 16 pages, 5 figures
Class elicitation session on lexicon
Creators: name: Massoma, Achille
name: Delucchi, Rachele
name: Hyman, Larry M.
name: Lionnet, Florian
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: abb

description: Verbs (and other vocab): 'bark', 'bend', 'give birth', 'blow with mouth', 'blow nose', 'become blind', 'blind person', 'come back', 'return something'; vocab: 'burn', 'fry', "it burned", "I burned", "it is burned"; vocab discussed: 'carry', 'clean', 'dawn', "the day is waking up", 'wake up', 'crawl', 'clear away', 'cross', 'cut', "I'm cutting the grass", 'grass', "this grass", 'release'; 'deceive', 'divide', 'drip', 'drive away', 'dry', 'eat meat', (bite/chew), 'exchange', 'exit', 'take out', 'cultivate', 'fear', 'look for', 'find', 'want', "I saw it", "I want it"; 'dig', "I'm digging a hole", 'fold', 'wrap', 'cover' (with lid, cloth, etc.), 'open', 'uncover', 'take off something', 'groan' (='to tie your face'), 'growl' (maybe just 'bark'?), 'harvest', 'hate', "I hate him", 'heat (verb)', 'advice', 'hot day'; 'grasp'/'catch'/'hold', 'be heavy', 'make heavy', "don't make that bag heavy", "it became heavy", 'imitate', 'injure', 'get injured', "I gave him an injury", 'make fall', "I made him fall", 'injury', "I injured him"; 'jump', 'take care of
 (care for, be a parent to), 'knee', 'raise'.
Biodiversity modelling in practice - predicting bird and woody plant species richness on farmlands
Creators: name: Sybertz, Janine
name: Matthies, Sarah
name: Schaarschmidt, Frank
name: Reich, Michael
name: Haaren, Christina Von
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: In light of decreasing species richness on farmland and an increasing awareness of biodiversity issues among customers and food companies, concepts and models to evaluate and enhance farmland biodiversity are greatly needed. It is important that the models are easy to apply as they have to be utilized by practitioners such as farmers and their consultants. In this study, simple but valid predictors were identified to rapidly assess the species richness of birds and woody plants in hedgerows, an important farmland landscape element. Hedgerows were sampled in seven agricultural landscapes throughout Germany. By means of automatic model selection procedures, linear regression models were estimated to predict bird and woody plant species richness. Cross validation procedures were carried out in order to visualize model selection uncertainty and estimate the prediction error. Due to a rather high prediction error, the model for plants can only be recommended for use when field work is not feasible. The model for birds, however, explained 70.8% of the variance in species numbers. It may help farmers, food companies and nature conservation agencies to rapidly evaluate bird species richness in hedgerows on farmland and to identify potentials and appropriate measures for enhancing it.
Die "Todesfuge" von Paul Celan untersucht auf musikalische Strukturen
Creators: name: Peter Oberosler
Publisher: name: Zenodo
Year: 2023

description: Die ‚Todesfuge‘ von Paul Celan untersucht auf musikalische Strukturen;

SoSe 2016 University Innsbruck / Institut für Vergleichende Literaturwissenschaft;

Seminar zur Interkulturalität: Gedichtanalyse;

term paper by Peter Oberosler;
Observational Effects of Anomalous Boundary Layers in Relativistic Jets
Creators: name: Aloy, M. A.
name: Mimica, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent theoretical work has pointed out that the transition layer between a jet an the medium surrounding it may be more complex than previously thought. Under physically realizable conditions, the transverse profile of the Lorentz factor in the boundary layer can be non-monotonic, displaying the absolute maximum where the flow is faster than at the jet spine, followed by an steep fall off. Likewise, the rest-mass density, reaches an absolute minimum (coincident with the maximum in Lorentz factor) and then grows until it reaches the external medium value. Such a behavior is in contrast to the standard monotonic decline of the Lorentz factor (from a maximum value at the jet central spine) and the corresponding increase of the rest-mass density (from the minimum reached at the jet core). We study the emission properties of the aforementioned anomalous shear layer structures in kiloparsec-scale jets aiming to show observable differences with respect to conventional monotonic and smooth boundary layers.
description: 32 pages, 9 figures (1 in color), accepted in ApJ
Prism international
Creators: name: Prism International
Publisher: name: Vancouver : The Creative Writing Program of the University of British Columbia
Year: 2021

description: The following description is provided by the publisher:
 CONTENTS
 FIGURES
 Emma Cleary & Molly Cross-Blanchard 8 Letter from the Editors
 CORPOREAL
 Anne Stone & Wayde Compton 10 Antiquing in Vermont
 John Elizabeth Stintzi 25 What Is a Body If Not
 Dessa Bayrock 27 The Patron Saint of Butchers is also the Patron Saint of Surgeons and Abortions
 Nicole Melanson 28 Small Talk
 Hannah Green 29 Late Nights
 NUMERAL
 Stefani Nellen 34 The Moment
 Tanis Franco 46 The Fourth Region of a Venn Diagram is the Unoccupied Region
 Traci Skuce 47 The Half-Life of Swimming Lessons
 Maggie Burton 48 Transformation Gag
 Graeme Bezanson 49 I March in the Parade of Liberty but as Long as I Love You I'm Not Free
 Charity E. Yoro 50 Our Lady of 'Iolani
 INANIMATE
 Catherine Seton 54 How do they use you?
 Liz Harmer 55 Decisive Action
 Hege A. Jakobsen Lepri 69 Spoon
 Geoff Anderson 70 Plantation
 Jonathan Glenn Travelstead 71 Dark Forest
 ETHEREAL
 Jennie Chantal Duguay 73 Hide & Seek
 Amanda Merpaw 75 during the service at st stephen's episcopal church
 Alysa Hullett 78 A Respectful Letter to the Living
 lue boileau 79 I Swallow Creatures Whole
 Jacob M. Appel 80 Attachment
 Senaa Ahmad 81 The Women, Before and After
 Contributors 91