cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Making Violence against Women (In)visible? Restrictions on Media Reporting of Intervention Orders (Advance)
Creators: name: ANNIE BLATCHFORD
name: JENNIFER MORGAN
Publisher: name: Monash University
Year: 2021
Subjects: subject: Law
subject: FOS: Law

description: Journalists are often criticised for their reporting of violence against women (‘VAW’). Media coverage has been described as lacking in context, thus presenting VAW as individual incidents rather than as a social problem, as being over-reliant on police as sources, and generally distorting the reality of that violence. However, much of this criticism ignores the legal restrictions placed on the media. This article focuses on one such restriction, that contained in family violence intervention order legislation. It explores whether the reporting of intervention orders should be subject to any restrictions, especially in the context of reporting on intimate partner homicides (‘IPHs’). We conclude that there are good reasons to provide for restrictions on reporting, provided the subject of the order is able to give consent to publication of the information, but that the removal of the restriction in the context of IPHs would make a small, but important, contribution to increasing public understanding of such homicides and VAW.
Influence matrix approach to many-body Floquet dynamics
Creators: name: Lerose, Alessio
name: Sonner, Michael
name: Abanin, Dmitry A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work, we introduce an approach to study quantum many-body dynamics, inspired by the Feynman-Vernon influence functional. Focusing on a family of interacting, Floquet spin chains, we consider a Keldysh path-integral description of the dynamics. The central object in our approach is the influence matrix (IM), which describes the effect of the system on the dynamics of a local subsystem. For translationally invariant models, we formulate a self-consistency equation for the influence matrix. For certain special values of the model parameters, we obtain an exact solution which represents a perfect dephaser (PD). Physically, a PD corresponds to a many-body system that acts as a perfectly Markovian bath on itself: at each period, it measures every spin. For the models considered here, we establish that PD points include dual-unitary circuits investigated in recent works. In the vicinity of PD points, the system is not perfectly Markovian, but rather acts as a bath with a short memory time. In this case, we demonstrate that the self-consistency equation can be solved using matrix-product states (MPS) methods, as the IM temporal entanglement is low. A combination of analytical insights and MPS computations allows us to characterize the structure of the influence matrix in terms of an effective "statistical-mechanics" description. We finally illustrate the predictive power of this description by analytically computing how quickly an embedded impurity spin thermalizes. The influence matrix approach formulated here provides an intuitive view of the quantum many-body dynamics problem, opening a path to constructing models of thermalizing dynamics that are solvable or can be efficiently treated by MPS-based methods, and to further characterizing quantum ergodicity or lack thereof.
description: 21 pages, 11 figures
The Well-Tempered Neutralino
Creators: name: Arkani-Hamed, N.
name: Delgado, A.
name: Giudice, G. F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The dark-matter prediction is usually considered as one of the successes of low-energy supersymmetry. We argue that, after LEP constraints are taken into account, the correct prediction for the dark-matter density, at a quantitative level, is no longer a natural consequence of supersymmetry, but it requires special relations among parameters, highly sensitive to small variations. This is analogous to the problem of electroweak-symmetry breaking, where the correct value of the Z mass is obtained only with a certain degree of fine tuning. In the general parameter space of low-energy supersymmetry, one of the most plausible solution to reproduce the correct value of the dark-matter density is the well-tempered neutralino, which corresponds to the boundary between a pure Bino and a pure Higgsino or Wino. We study the properties of well-tempered neutralinos and we propose a simple limit of split supersymmetry that realizes this situation.
description: Latex2e, 29 pages, 5 figures, reference added, typo corrected, version to be published in NPB
Australia’s Human Rights Scrutiny Regime
Creators: name: Williams, George
name: Reynolds, Daniel
name: Winsome Hall
Publisher: name: Monash University
Year: 2021
Subjects: subject: Law
subject: FOS: Law

description: The Human Rights (Parliamentary Scrutiny) Act 2011 (Cth) aims to improve the protection of human rights in Australia. It does so by requiring federal Bills and legislative instruments to be accompanied by a statement as to their compatibility with a number of international human rights conventions. The Parliamentary Joint Committee on Human Rights, also constituted by the Act, examines such statements and makes recommendations on the human rights compatibility of Bills. In this model of human rights scrutiny, there is no scope for Bills or regulations to be interpreted conformably with rights, or declared invalid, by courts. This article uses empirical analysis to explore whether this model has led to greater discussion about, and protection of, human rights in Australia. While the regime has contributed to the dialogue between lawmakers about the human rights impacts of proposed legislation, the model is failing to deliver better substantive human rights outcomes in federal Bills and legislative instruments. If Australia is committed to enhancing human rights protection, the scrutiny regime should be reinforced, or other measures, such as a charter of rights, must be contemplated.
Measuring the gravitomagnetic distortion from rotating halos I: methods
Creators: name: Tang, Chengfeng
name: Zhang, Pierre
name: Luo, Wentao
name: Li, Nan
name: Cai, Yi-Fu
name: Pi, Shi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Source galaxy images are distorted not only by a static gravitational potential, but also by frame-dragging induced by massive rotating objects like clusters of galaxies. Such effect is well understood theoretically, it is therefore of great interest to estimate its detectability for future surveys. In this work, we analyze the lensing convergence $κ$ around rotating dark matter halos. The rotation of the massive objects generates a gravitomagnetic potential giving rise to an anisotropic contribution to the lensing potential. We construct an estimator $δκ$ to describe the difference between the symmetric enhancement and reduction of $κ$ around the halo rotation axis, finding that it is well approximated by a function proportional to the halo velocity dispersion squared times a dimensionless angular momentum parameter. Using simulation mocks with realistic noise level for a survey like LSST, we test our estimator, and show that the signal from frame-dragging of stacked rotating lenses is consistent with zero within $1σ$. However, we find that the most massive cluster in SDSS DR7 spectroscopic selected group catalog has a line-of-sight rotation velocity of 195.0km/s and velocity dispersion of 667.8km/s, which is at $1.2\times 10^{-8}$ odds according to the angular momentum probability distribution inferred from N-body simulations. By studying SDSS DR7 spectroscopic selected group catalog, we show how rotating clusters can be identified, and, finding that fast rotating clusters might be more abundant than in estimates based on simulations, a detection of gravitomagnetic distortion may be at reach in future surveys
description: This article has been accepted by The Astrophysical Journal
Stripe Charge Ordering in Triangular-Lattice Systems
Creators: name: Onishi, Hiroaki
name: Hotta, Takashi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the ground-state properties of a t2g-orbital Hubbard model on a triangular lattice at electron density 5.5 by using numerical techniques. There appear several types of paramagnetic phases, but we observe in common that one or two orbitals among three orbitals become relevant due to the effect of orbital arrangement. It is found that charge stripes stabilized by the nearest-neighbor Coulomb interaction consist of antiferromagnetic/ferro-orbital chains for small Hund's coupling, while there occurs stripe charge ordering with ferromagnetic/antiferro-orbital chains for large Hund's coupling.
description: 2 pages, 2 figures, Proceedings of LT24 (August 10-17, 2005, Orlando)
Effect of neutrino trapping on the three flavor FFLO phase of QCD
Creators: name: Laporta, V.
name: Ruggieri, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the effect of a non-zero lepton chemical potential on the structure of the three flavor Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase of QCD at finite temperature. We show that, as in the BCS case, the lepton chemical potential favors two-species color superconductivity and disfavors the three species pairing. We stress that this study could be relevant for the cooling of a proto-neutron star with a FFLO core, if the temperatures are higher than the un-trapping temperature.
description: 12 pages, 2 figures, RevTeX4 class. Changed Fig. 2 (see text) and some reference added
Διερευνώντας την έννοια της αέναης προόδου στον Δυτικό Πολιτισμό και το σύγχρονο αίτημα της αειφορίας
Creators: name: Κορφιάτης, Παναγιώτης Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Πρόοδος
Ανάπτυξη
Αειφορία
Progress
Development
Sustainability

description: Στην παρούσα εργασία θα επιχειρήσουμε μια ιστορική αναδρομή των εννοιών του ανθρώπου, της φύσης και του περιβάλλοντος. Έτσι θα καταλάβουμε αν υπάρχουν ιστορικά διαφορετικές θεάσεις και ασυνέχειες στις παραπάνω έννοιες και την αλληλεπίδρασή τους, αν έχουν δημιουργηθεί κρίσιμες ανθρωπογενείς παρεμβάσεις ή αν τελικά ακολουθούμε κάποιο είδος φυσικού νόμου που καθορίζει τη μοίρα και το τέλος των πολιτισμών.Στόχος μας είναι να σκιαγραφήσουμε και να αναπτύξουμε την έννοια της προόδου. Όχι μόνο επειδή η πρόοδος είναι θεωρητικά ο πρόγονος της έννοιας της συνεχούς ανάπτυξης, αλλά επειδή η έννοια της ανάπτυξης εμφανίζεται και ονομάζεται από τους επίσημους οργανισμούς, ως συνθετικό στοιχείο στο περιβαλλοντικό αίτημα της αειφορίας που θα εξετάσουμε και ταυτόχρονα αποτελεί το πλανητικό ζητούμενο στον 21ο αιώνα που ζούμε. Αυτό το ζητούμενο που ονομάζεται αειφόρος ανάπτυξη. Ουσιαστικά πίσω από την έννοια της αειφορίας, υπάρχει ένας τρόπος θέασης και διαχείρισης της φύσης και του περιβάλλοντος και πίσω από αυτόν της ανάπτυξης, μια νοοτροπία συνεχούς προόδου.
description: In this paper we will attempt a historical review of the concepts of man, nature and the environment. This is how we will understand if there are historically different views and discontinuities in the above concepts and their interaction, if critical anthropogenic interventions have been created, or if we are ultimately following some kind of natural law that determines the fate and end of civilizations.Our aim is to outline and develop the concept of progress. Not only because progress is theoretically the ancestor of the concept of continuous development, but because the concept of development appears and is named by official organizations, as a synthetic element in the environmental demand of sustainability that we will consider and at the same time is the planetary demand in the 21st century we live in. This issue we called sustainable development. Essentially behind the concept of sustainability, there is a way of viewing and managing nature and the environment and behind that of development, a mindset of continuous progress.
Australia’s Human Rights Scrutiny Regime (Advance)
Creators: name: Williams, George
name: Reynolds, Daniel
name: Winsome Hall
Publisher: name: Monash University
Year: 2021
Subjects: subject: Law
subject: FOS: Law

description: The Human Rights (Parliamentary Scrutiny) Act 2011 (Cth) aims to improve the protection of human rights in Australia. It does so by requiring federal Bills and legislative instruments to be accompanied by a statement as to their compatibility with a number of international human rights conventions. The Parliamentary Joint Committee on Human Rights, also constituted by the Act, examines such statements and makes recommendations on the human rights compatibility of Bills. In this model of human rights scrutiny, there is no scope for Bills or regulations to be interpreted conformably with rights, or declared invalid, by courts. This article uses empirical analysis to explore whether this model has led to greater discussion about, and protection of, human rights in Australia. While the regime has contributed to the dialogue between lawmakers about the human rights impacts of proposed legislation, the model is failing to deliver better substantive human rights outcomes in federal Bills and legislative instruments. If Australia is committed to enhancing human rights protection, the scrutiny regime should be reinforced, or other measures, such as a charter of rights, must be contemplated.
Response of quantum spin networks to attacks
Creators: name: Sundar, Bhuvanesh
name: Walschaers, Mattia
name: Parigi, Valentina
name: Carr, Lincoln D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the ground states of spin models defined on networks that we imprint (e.g. non-complex random networks like Erdos-Renyi or complex networks like Watts-Strogatz, and Barabasi-Albert), and their response to decohering processes which we model with network attacks. We quantify the complexity of these ground states, and their response to the attacks, by calculating distributions of network measures of an emergent network whose link weights are the pairwise mutual information between spins. We focus on attacks which projectively measure spins. We find that the emergent networks in the ground state do not satisfy the usual criteria for complexity, and their average properties are captured well by a single dimensionless parameter in the Hamiltonian. While the response of classical networks to attacks is well-studied, where classical complex networks are known to be more robust to random attacks than random networks, we find counterintuitive results for our quantum networks. We find that the ground states for Hamiltonians defined on different classes of imprinted networks respond similarly to all our attacks, and the attacks rescale the average properties of the emergent network by a constant factor. Mean field theory explains these results for relatively dense networks, but we also find the simple rescaling behavior away from the regime of validity of mean field theory. Our calculations indicate that complex spin networks are not more robust to projective measurement attacks, and presumably also other quantum attacks, than non-complex spin networks, in contrast to the classical case. Understanding the response of the spin networks to decoherence and attacks will have applications in understanding the physics of open quantum systems, and in designing robust complex quantum systems, possibly even a robust quantum Internet in the long run, that is maximally resistant to decoherence.
description: 22 pages, 10 figures + references + appendix
Η εθιμοτυπία στην Εκκλησία της Ελλάδος
Creators: name: Κοντακτσής, Απόστολος Γρηγορίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Εκκλησιαστική Τάξη και Εθιμοτυπία
Ειρηνικές επισκέψεις Προκαθημένων
Κώδικας
Ecclesiastical Order and Etiquette
Peaceful visits of Primates
Code

description: Βασικό χαρακτηριστικό της Ορθόδοξης Χριστιανικής Εκκλησίας είναι οι τελετουργίες της και όλα όσα διαδραματίζονται κατά τη Θεία Λατρεία. Για να μπορέσουν αυτά να υλοποιηθούν άρτια και σωστά θα πρέπει να υπάρξει κάποιο επίσημο εκκλησιαστικό κείμενο, το οποίο θα θεμελιώνει τον σχεδιασμό και τη διεξαγωγή τους. Το κείμενο αυτό αρχικά ήταν ο Κώδικας Εκκλησιαστικής Τάξεως και Εθιμοτυπίας, ο οποίος εκδόθηκε το 1972 και προσπάθησε να καθορίσει τα ζητήματα αυτά. Λόγω της διαφοροποίησης των αναγκών της εκάστοτε κοινωνίας, οι οποίες επηρέασαν άμεσα και την εκκλησιαστική ζωή, ο Κώδικας αυτός εμπλουτίστηκε ακόμη περισσότερο και αναδιαμορφώθηκε. Έτσι ο Αρχιμανδρίτης Πατρίκιος Καλεώδης, το έτος 2002 και μετά με τέσσερις εμπλουτισμένες επανεκδόσεις έως το 2020, προχώρησε στην επιμέλεια όλων των παλαιότερων εκδόσεων του Κώδικα Εκκλησιαστικής Τάξεως και Εθιμοτυπίας και συνέγραψε έναν αναθεωρημένο, πάνω στον οποίο βασίζονται όλες οι ακολουθίες της Ορθόδοξης Εκκλησίας της Ελλάδος. Ο στόχος της συγκεκριμένης εργασίας είναι να παρουσιάσει την Εκκλησιαστική Τάξη και Εθιμοτυπία κατά τις ειρηνικές επισκέψεις Προκαθημένων άλλων Εκκλησιών στην Ελλάδα, καθώς και στην αντίστοιχη του Αρχιεπισκόπου Αθηνών κ. Χριστοδούλου στο Βατικανό.
description: A key feature of the Orthodox Christian Church is its rituals and everything that takes place during Divine Worship. In order for these to be implemented properly and correctly, there must be some official church text, which will establish the planning and carrying out of them. This text was originally the Code of Ecclesiastical Order and Etiquette, which was issued in 1972 and attempted to define these issues. Due to the differentiation of the needs of each society, which directly affected the church life, this Code was further enriched and reformulated. Thus Archimandrite Patrikios Kaleodis, in the year 2002 and then with four reissues up to 2020, proceeded to edit all the older editions of the Code of Ecclesiastical Order and Etiquette and wrote a revised one, on which all the services of the Orthodox Church of Greece are based. The aim of this particular paper is to present the Church Order and Etiquette during the peaceful visits of Primates of other Churches in Greece, as well as the corresponding one of the Archbishop of Athens Mr. Christodoulou in the Vatican.
description: Σε συνεργασία με: Κοινωνικής Θεολογίας (Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών)
Modeling gravitational waves from exotic compact objects
Creators: name: Toubiana, Alexandre
name: Babak, Stanislav
name: Barausse, Enrico
name: Lehner, Luis
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Exotic compact objects can be difficult to distinguish from black holes in the inspiral phase of the binaries observed by gravitational-wave detectors, but significant differences may be present in the merger and post-merger signal. We introduce a toy model capturing the salient features of binaries of exotic compact objects with compactness below $0.2$, which do not collapse promptly following the merger. We use it to assess their detectability with current and future detectors, and whether they can be distinguished from black hole binaries. We find that the Einstein Telescope (LISA) could observe exotic binaries with total mass $\mathcal{O}(10^2) \ M_{\odot}$ ($10^4-10^6 \ M_{\odot}$), and potentially distinguish them from black hole binaries, throughout the observable Universe, as compared to $z\lesssim 1$ for Advanced LIGO. Moreover, we show that using standard black hole templates for detection could lead to a loss of up to $60\%$ in the signal-to-noise ratio, greatly reducing our chances of observing these signals. Finally, we estimate that if the loudest events in the O1/O2 catalog released by the LIGO/Virgo collaboration were ECO binaries as the ones considered in this paper, they would have left a post-merger signal detectable with model-agnostic searches, making this hypothesis unlikely.
description: 11 pages (13 with appendix) Matches the version published in PRD
Εγώ και ετερότητα στο φιλοσοφικό και θεατρικό έργο του Ζαν- Πωλ Σαρτρ
Creators: name: Κωνσταντινίδου, Ευαγγελία Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Σαρτρ
Υπαρξισμός
Εγώ - άλλοι
Sartre
Existentialism
Ego - others

description: Η παρούσα διπλωματική εργασία με τίτλο: «εγώ και ετερότητα στο φιλοσοφικό και θεατρικό έργο του Ζαν -Πωλ Σαρτρ» έχει ως στόχο μέσω της παρουσίασης της φιλοσοφίας του υπαρξισμού του Σαρτρ, να διερευνήσει και να αναδείξει τα στοιχεία τα οποία συγκροτούν τη σχέση του «εγώ» με τον εαυτό του και με τους «άλλους» έτσι όπως την αντιλαμβανόταν ο ίδιος. Για να επιτευχθεί αυτό θα επικεντρωθώ στην ανάλυση τριών έργων του, δυο θεατρικών: Κεκλεισμένων των θυρών και οι Μύγες και ενός φιλοσοφικού μυθιστορήματος με τίτλο: Η Ναυτία. Ο λόγος που επιλέχθηκαν τα συγκεκριμένα έργα είναι η άμεση συσχέτισή τους με το θέμα που θα αναλυθεί εκτενέστερα στα κεφάλαια που ακολουθούν. Η εργασία είναι χωρισμένη σε τρία κεφάλαια με ειδικές παραπομπές οι οποίες αποδεικνύουν την ιδιαίτερη σημασία που απέδιδε ο συγγραφέας σε ένα προσωπικό «εγώ» καθώς και στο βλέμμα των «άλλων» και στην αλληλεπίδρασή του με αυτούς.
description: This degree entitled: "ego and eternity in Jean-Paul Sartre's philosophical and theatrical work" aims, through the presentation of Sartre's philosophy of existentialism, to investigate and highlight the elements that constitute the relationship of the "ego" with itself and with the "others" as he understood it. To achieve this, I will focus on the analysis of three of his plays, two of them theatrical: Huis Clos and Les Mouches and a philosophical novel entitled: Nausea. The reason why these plays were chosen is their direct correlation to the topic that will be discussed in more detail in the following chapters. The paper is divided into three chapters with specific references which demonstrate the special importance the author attached to a personal "I" as well as to the gaze of "others" and his interaction with them.
description: Σε συνεργασία με: Φιλοσοφίας, Παιδαγωγικής και Ψυχολογίας (Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών), Φιλοσοφικών και Κοινωνικών Σπουδών (Πανεπιστήμιο Κρήτης)
Molecular mechanisms regulating the ligand binding function of cd44
Creators: name: Chiu, Roland K.
Publisher: name: University of British Columbia
Year: 2009

description: CD44 is a broadly distributed cell surface glycoprotein that has been shown to play an important role in many adhesion-dependent cellular processes including wound healing, lymphocyte and progenitor cell homing, and tumour metastasis. Defining the precise molecular mechanisms that regulate the ligand-binding function of CD44 is a critical step to the understanding of its role in these diverse processes. Binding of the principal ligand for CD44, hyaluronan, is a highly regulated process. Although all cells that express CD44 on their surface, present the same conserved amino terminal hyaluronan recognition motif, most do not bind this ligand constitutively. To further explore this fact, several cell lines with differing hyaluronan binding abilities were examined. These studies have demonstrated that changes in avidity achieved through increased transcription and/or aggregation in the plane of the membrane play a critical role in regulating the hyaluronan binding activity of the molecule. Correlations have been noted between the expression of certain alternatively spliced CD44 isoforms and the metastatic propensity of various histologically distinct tumour cell types. The precise mechanism by which particular CD44 isoforms contribute to the metastatic process is, however, unclear. The studies presented in this Thesis demonstrate that exon vlO containing CD44 isoforms promote cell-cell aggregation through the recognition of chondroitin sulfate presented by CD44 itself. These data help explain the differential involvement of vlO containing CD44 isoforms in tumour metastasis. Soluble CD44 proteins generated by proteolytic cleavage or aberrant intron retention have been shown to antagonize the ligand binding activity of the corresponding cell surface receptor, inducing apoptosis and inhibiting tumour growth. Interestingly, such findings appear to contradict recent studies demonstrating a correlation between the presence of high levels of soluble CD44 in the serum of cancer patients, and poor prognosis. In this Thesis, a novel naturally occurring soluble CD44 isoform generated by alternative splicing of the "constant exons", was cloned and analyzed. This molecule, designated CD44RC, markedly enhances the hyaluronan binding function of cell surface CD44. CD44RC induces the aggregation of cell surface CD44 via a mechanism that involves the recognition of chondroitin sulfate side chains.
LLL vs. LLM: Half BPS Sector of N=4 SYM Equals to Quantum Hall System
Creators: name: Ghodsi, A.
name: Mosaffa, A. E.
name: Saremi, O.
name: Sheikh-Jabbari, M. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper we elaborate on the correspondence between the quantum Hall system with filling factor equal to one and the N=4 SYM theory in the 1/2 BPS sector, previously mentioned in the [hep-th/0409174, hep-th/0409115]. We show the equivalence of the two in various formulations of the quantum Hall physics. We present an extension of the noncommutative Chern-Simons Matrix theory which contains independent degrees of freedom (fields) for particles and quasiholes. The BPS configurations of our model, which is a model with explicit particle-quasihole symmetry, are in one-to-one correspondence with the 1/2 BPS states in the N=4 SYM. Within our model we shed light on some less clear aspects of the physics of the N=4 theory in the 1/2 BPS sector, like the giant dual-giant symmetry, stability of the giant gravitons, and stringy exclusion principle and possible implications of the (fractional) quantum Hall effect for the AdS/CFT correspondence.
description: 32 pages, 4 figures; v2: A typo fixed, references added
Vacuum polarization near boundaries
Creators: name: Wernersson, Jonathan
name: Zahn, Jochen
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the effect of boundary conditions on vacuum polarization for charged scalar fields in two space-time dimensions. We find that both Dirichlet and Neumann boundary conditions lead to screening. In the Dirichlet case, the vacuum polarization charge density vanishes at the boundary, whereas it attains its maximum there for Neumann boundary conditions. At a critical field strength, the vacuum polarization diverges for Neumann boundary conditions, an effect due to the instability of the lowest energy mode in the presence of the external field.
description: v2: Some clarifications & new section on nonperturbative results. Final version
The interior of Uranus: Thermal profile, bulk composition and the distribution of rock, water and hydrogen and helium
Creators: name: Morf, Luca
name: Müller, Simon
name: Helled, Ravit
Publisher: name: arXiv
Year: 2024
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present improved empirical density profiles of Uranus and interpret them in terms of their temperature and composition using a new random algorithm. The algorithm to determine the temperature and composition is agnostic with respect to the temperature gradient in non-isentropic regions and chooses randomly amongst all possible gradients that are stable against convection and correspond to an Equation of State compatible composition. Our empirical models are based on an efficient implementation of the Theory of Figures up to 10th order including a proper treatment of the atmosphere. The accuracy of 10th order ToF enables us to present accurate calculations of the gravitational moments of Uranus up to $J_{14}$: $J_{6} = ( 5.3078 \pm 0.3312)\cdot10^{-7}$, $J_{8} = (-1.1114 \pm 0.1391)\cdot10^{-8}$, $J_{10} = ( 2.8616 \pm 0.5466)\cdot10^{-10}$, $J_{12} = (-8.4684 \pm 2.0889)\cdot10^{-12}$ and $J_{14} = ( 2.7508 \pm 0.7944)\cdot10^{-13}$. We consider two interior models of Uranus that differ with respect to the maximal number of materials allowed per layer of Uranus (three vs. four composition components). The case with three materials does not allow Hydrogen and Helium in deeper parts of Uranus and results in a higher water abundance which leads to lower central temperatures. On the other hand, the models with four materials allow H-He to be mixed into the deeper interior and lead to rock-dominated solutions. We find that these four composition components models are less reliable due to the underlying empirical models incompatibility with realistic Brunt frequencies. Most of our models are found to be either purely convective with the exception of boundary layers, or only convective in the outermost region. Almost all of our models possess a region that is convective and consists of ionic H$_{2}$O which could explain the generation of Uranus' magnetic field.
description: Accepted for publication in A&A
Pneumatic capillary gun for ballistic delivery of microparticles
Creators: name: Rinberg, Dmitry
name: Simonnet, Claire
name: Groisman, Alex
Publisher: name: arXiv
Year: 2005
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: A pneumatic gun for ballistic delivery of microparticles to soft targets is proposed and demonstrated. The particles are accelerated by a high speed flow of Helium in a capillary tube. Vacuum suction applied to a concentric, larger diameter tube is used to divert substantially all of the flow of Helium from the gun nozzle, thereby preventing the gas from hitting and damaging the target. Speed of ejection of micron-sized gold particles from the gun nozzle, and their depth of penetration into agarose gels are reported.
description: 7 pages, 3 figures
Story about a two-branched coconut tree
Creators: name: Rudolph, Johnny (Soni)
name: Ding, Lydia
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: nkr

description: One .mov video file, one .wav audio file, and one .eaf ELAN transcription file for a story about a two-branched coconut tree on Nukuoro Atoll.
Compression Acceleration of Protons and Heavier Ions at the Heliospheric Current Sheet
Creators: name: Murtas, Giulia
name: Li, Xiaocan
name: Guo, Fan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Recent observations by Parker Solar Probe (PSP) suggest that protons and heavier ions are accelerated to high energies by magnetic reconnection at the heliospheric current sheet (HCS). By solving the energetic particle transport equation in large-scale MHD simulations, we study the compression acceleration of protons and heavier ions in the reconnecting HCS. We find that the acceleration of multi-species ions results in nonthermal power-law distributions with spectral index consistent with the PSP observations. Our study shows that the high-energy cutoff of protons can reach $E_{max} \sim 0.1$ - $1$ MeV depending on the particle diffusion coefficients. We also study how the high-energy cutoff of different ion species scales with the charge-to-mass ratio $E_{max} \propto (Q/M)^α$. When determining the diffusion coefficients from the quasilinear theory with a Kolmogorov magnetic power spectrum, we find that $α\sim 0.4$, which is somewhat smaller than $α\sim 0.7$ observed by PSP.
description: 15 pages, 6 figures. Accepted by ApJ
Relativistic and Electron Correlation Effects in Static Dipole Polarizabilities for Main-Group Elements
Creators: name: Cheng, YingXing
Publisher: name: arXiv
Year: 2024
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In this study, I compute the static dipole polarizability of main-group elements using the finite-field method combined with relativistic coupled-cluster and configuration interaction simulations. The computational results closely align with the values recommended in the 2018 table of static dipole polarizabilities of neutral elements [Mol. Phys. 117, 1200 (2019)]. Additionally, I investigate the influence of relativistic effects and electron correlation on atomic dipole polarizabilities. Specifically, three types of relativistic effects impacting dipole polarizabilities are studied: scalar-relativistic, spin-orbit coupling, and fully relativistic Dirac-Coulomb effects. The results indicate that scalar-relativistic effects are predominant for atoms in Groups 1--2, with minimal influence from spin-orbit coupling effects. Conversely, for elements in Groups 13--18, scalar-relativistic effects are less significant, while spin-orbit coupling significantly affects elements starting from the fourth row in Groups 13--14 and from the fifth row in Groups 15--18. In each category of relativistic effects, the impact of electron correlation is evaluated. The results show that electron correlation significantly influences dipole polarizability calculations, particularly for Groups 1--2 and 13--14 atoms, but is less significant for Groups 15--18 atoms. This study provides a comprehensive and consistent dataset of dipole polarizabilities and contributes to a systematic understanding of the roles of relativistic and electron correlation effects in atomic dipole polarizabilities, serving as a valuable reference for future research.
Fast solution of the superconducting dynamo benchmark problem
Creators: name: Prigozhin, Leonid
name: Sokolovsky, Vladimir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences
subject: G.1.9
subject: 65R20

description: A model of high temperature superconducting dynamo, a promising type of flux pumps capable of wireless injection of a large DC current into a superconducting circuit, has recently been chosen as an applied superconductivity benchmark problem and solved using ten different numerical methods (Ainslie et al 2020 Supercond. Sci. Technol. 33 105009). Using expansions in Chebyshev polynomials for approximation in space and the method of lines for integration in time we derive a simple and accurate numerical method which is much faster. The proposed numerical method was applied also to problems with transport current and a field-dependent sheet critical current density.
description: To appear in SUST
On the kinematic nature of apparent discs at high redshifts: Local counterparts are not dominated by ordered rotation but by tangentially anisotropic random motion
Creators: name: Wang, Bitao
name: Peng, Yingjie
name: Cappellari, Michele
name: Gao, Hua
name: Mo, Houjun
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: It is not straightforward to physically interpret the apparent morphology of galaxies. Recent observations by James Webb Space Telescope (JWST) revealed a dominant galaxy population at high redshifts ($z>2$) that were visually classified as discs for their flattened shapes and/or exponential light profiles. The extensively accepted interpretation is that they are dynamically cold discs supported by bulk rotation. However, it is long known that flattened shapes and exponential profiles are not exclusive for rotating disc structure. To break degeneracy and assess the rotational support of typical high-$z$ galaxies in the JWST samples, those with active star formation and stellar masses $\mathrm{lg}(\mathcal{M}_{\star}/\mathcal{M}_{\odot})\sim9$, we study the kinematics of their equal-mass counterparts at $z=0$. While these local star-forming low-mass galaxies are photometrically similar to real dynamically cold discs, they are not supported by ordered rotation but primarily by random motion, and their flattened shapes result largely from tangential orbital anisotropy. Given the empirical and theoretical evidence that young galaxies are dynamically hotter at higher redshifts, our results suggest that the high-$z$ JWST galaxies may not be cold discs but are dynamically warm/hot galaxies with flattened shapes driven by anisotropy. While both having low rotational support, local low-mass galaxies possess oblate shapes, contrasting the prolate shapes (i.e. cigar-like) of low-mass systems at high redshifts. Such shape transition (prolate$\Rightarrow$oblate) indicates an associated change in orbital anisotropy (radial$\Rightarrow$tangential), with roots likely in the assembly of their host dark matter halos.
description: 11 pages, 4 figures. ApJL accepted
Effects of compression on the vibrational modes of marginally jammed solids
Creators: name: Wyart, Matthieu
name: Silbert, Leonardo E.
name: Nagel, Sidney R.
name: Witten, Thomas A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Glasses have a large excess of low-frequency vibrational modes in comparison with most crystalline solids. We show that such a feature is a necessary consequence of the weak connectivity of the solid, and that the frequency of modes in excess is very sensitive to the pressure. We analyze in particular two systems whose density D(w) of vibrational modes of angular frequency w display scaling behaviors with the packing fraction: (i) simulations of jammed packings of particles interacting through finite-range, purely repulsive potentials, comprised of weakly compressed spheres at zero temperature and (ii) a system with the same network of contacts, but where the force between any particles in contact (and therefore the total pressure) is set to zero. We account in the two cases for the observed a) convergence of D(w) toward a non-zero constant as w goes to 0, b) appearance of a low-frequency cutoff w*, and c) power-law increase of w* with compression. Differences between these two systems occur at lower frequency. The density of states of the modified system displays an abrupt plateau that appears at w*, below which we expect the system to behave as a normal, continuous, elastic body. In the unmodified system, the pressure lowers the frequency of the modes in excess. The requirement of stability despite the destabilizing effect of pressure yields a lower bound on the number of extra contact per particle dz: dz > p^(1/2), which generalizes the Maxwell criterion for rigidity when pressure is present. This scaling behavior is observed in the simulations. We finally discuss how the cooling procedure can affect the microscopic structure and the density of normal modes.
description: 13 pages, 8 figures
Experimental Installations of Impact-Attenuating Devices
Creators: name: Pigman, Jerry G.
name: Seymour, William M.
name: Cornette, Don L.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1973
Subjects: subject: Transportation Engineering

description: From a survey of the interstate system in Kentucky, 26 gore sites were found to be eligible for safety improvements. Energy absorbing barriers have been installed at five. Barriers are planned at 11 sites; seven sites have been contour graded; and three sites have been dismissed from consideration.  HI-DRO Cushions and Fitch Inertial Barriers were found to be effective crash cushions. HI-DRO Cushion maintenance costs per impact were less than those for Fitch Inertial Barriers; however, initial costs of materials and installation were higher. The HI-DRO Cushion is generally more adaptable to narrow and relatively short areas than either the Fitch Inertial Barrier or the Steel Crash Cushion. Desirability of redirectional capabilities is dependent upon site geometrics, traffic volumes, and speeds.  If there is no feasible alternative, installation of an impact attenuating device is advocated in terms of warrants.
A Comparison of Response Surface and Factorial Designs in Agricultural Research
Creators: name: Williams, Robert J.
name: Baker, J.R.
name: Williams, Robert J.
name: Baker, J.R.
Publisher: name: Unknown
Year: 1968
Subjects: Research and Development/Tech Change/Emerging Technologies

description: The use of response surface designs in preference to factorial designs in agriculture has become widely discussed and recommended. This paper simulates data for comparable response surface and factorial designs and uses this to demonstrate the similarities between the designs and their analyses and at the same time to point out some of the customary differences in their analyses. More particularly, it aims to show: (a) that for any design a reduction in the number of plots sown reduces the reliability of the results, and (b) that both a response surface design and a factorial design allow the calculation of estimated equations of response surfaces.
A Survey of Reflective Sheeting for Highway Signs
Creators: name: Rizenbergs, Rolands L.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1973
Subjects: subject: Transportation Engineering

description: A questionnaire (see the APPENDIX) was sent to highway agencies in all 50 states, the District of Columbia and Puerto Rico for the purpose of surveying state practices in regard to reflective sheeting purchase, usage specifications, testing, etc. The response was 100 percent and, thus, demonstrated a high degree of interest in the subject.  Responses to the questionnaire are tabulated on the attached tables. An attempt was made to report answers provided by the agencies without interpretation except in a few isolated cases where the necessafy information was available to properly relate the response to a given question. In a few instances, the agency was contacted for additional information or clarifications.  A detailed analysis of information obtained from the questionnaire, copies of specifications and purchase requisitions submitted by the respondents is intently omitted here. Instead, each contributor is invited to review the attached tables and to extract whatever information may be of value. However, the commentary and summary of findings, which follows, may be of interest.
High-Intensity Reflective Materials for Signs
Creators: name: Rizenbergs, Rolands L.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1973
Subjects: subject: Transportation Engineering

description: Field observations and laboratory tests and evaluations were conducted on High-Intensity and Engineering grade materials (Scotchlite), manufactured by the Minnesota Mining and Manufacturing Company, and were compared in regard to reflectivity, durability, and cost.  The High-Intensity type materials were found to have outstanding performance characteristics in comparison to Engineering Grade materials. The material significantly enhances sign legibility under low-beam illumination, and accelerated weathering tests showed superior durability.
Latency-sensitive Service Delivery with UAV-Assisted 5G Networks
Creators: name: Pandey, Shashi Raj
name: Kim, Kitae
name: Alsenwi, Madyan
name: Tun, Yan Kyaw
name: Han, Zhu
name: Hong, Choong Seon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this letter, a novel framework to deliver critical spread out URLLC services deploying unmanned aerial vehicles (UAVs) in an out-of-coverage area is developed. To this end, the resource optimization problem, i.e., resource blocks (RBs) and power allocation, and optimal UAV deployment strategy are studied for UAV-assisted 5G networks to jointly maximize the average sum-rate and minimize the transmit power of UAV while satisfying the URLLC requirements. To cope with the sporadic URLLC traffic problem, an efficient online URLLC traffic prediction model based on Gaussian Process Regression (GPR) is proposed which derives optimal URLLC scheduling and transmit power strategy. The formulated problem is revealed as a mixed-integer nonlinear programming (MINLP), which is solved following the introduced successive minimization algorithm. Finally, simulation results are provided to show our proposed solution approach's efficiency.
description: Accepted in IEEE Wireless Communications Letters
V5116 Sgr, an Eclipsing Supersoft Post-Outburst Nova?
Creators: name: Sala, Gloria
name: Hernanz, Margarita
name: Ferri, Carlo
name: Greiner, Jochen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: V5116 Sgr (Nova Sgr 2005 No. 2), discovered on 2005 July 4, was observed with XMM-Newton in March 2007, 20 months after the optical outburst. The X-ray spectrum shows that the nova had evolved to a pure supersoft X-ray source, with no significant emission at energies above 1 keV. The X-ray light-curve shows abrupt decreases and increases of the flux by a factor ~8. It is consistent with a periodicity of 2.97 h, the orbital period suggested by Dobrotka et al. (2007), although the observation lasted just a little more than a whole period. We estimate the distance to V5116 Sgr to be 11+/-3 kpc. A simple blackbody model does not fit correctly the EPIC spectra, with reduced chi^2>4. In contrast, ONe rich white dwarf atmosphere models provide a good fit, with nH=1.3(+/-0.1)e21 cm^-2, T=6.1(+/-0.1)e5 K, and L=3.9(+/-0.8)e37(D/10kpc)^2 erg/s (during the high-flux periods). This is consistent with residual hydrogen burning in the white dwarf envelope. The white dwarf atmosphere temperature is the same both in the low and the high flux periods, ruling out an intrinsic variation of the X-ray source as the origin of the flux changes. We speculate that the X-ray light-curve may result from a partial coverage by an asymmetric accretion disk in a high inclination system.
description: 2 figures, emulateapj, to appear in ApJL