cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Density Level Set Estimation on Manifolds with DBSCAN
Creators: name: Jiang, Heinrich
Publisher: name: arXiv
Year: 2017
Subjects: subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We show that DBSCAN can estimate the connected components of the $λ$-density level set $\{ x : f(x) \ge λ\}$ given $n$ i.i.d. samples from an unknown density $f$. We characterize the regularity of the level set boundaries using parameter $β> 0$ and analyze the estimation error under the Hausdorff metric. When the data lies in $\mathbb{R}^D$ we obtain a rate of $\widetilde{O}(n^{-1/(2β+ D)})$, which matches known lower bounds up to logarithmic factors. When the data lies on an embedded unknown $d$-dimensional manifold in $\mathbb{R}^D$, then we obtain a rate of $\widetilde{O}(n^{-1/(2β+ d\cdot \max\{1, β\})})$. Finally, we provide adaptive parameter tuning in order to attain these rates with no a priori knowledge of the intrinsic dimension, density, or $β$.
Restriction of Odd Degree Characters of $\mathfrak{S}_n$
Creators: name: Bessenrodt, Christine
name: Giannelli, Eugenio
name: Olsson, Jorn B.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Representation Theory (math.RT)
subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: Let $n$ and $k$ be natural numbers such that $2^k < n$. We study the restriction to $\mathfrak{S}_{n-2^k}$ of odd-degree irreducible characters of the symmetric group $\mathfrak{S}_n$. This analysis completes the study begun in [Ayyer A., Prasad A., Spallone S., Sem. Lothar. Combin. 75 (2015), Art. B75g, 13 pages] and recently developed in [Isaacs I.M., Navarro G., Olsson J.B., Tiep P.H., J. Algebra 478 (2017), 271-282].
Universality in Chaos: Lyapunov Spectrum and Random Matrix Theory
Creators: name: Hanada, Masanori
name: Shimada, Hidehiko
name: Tezuka, Masaki
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We propose the existence of a new universality in classical chaotic systems when the number of degrees of freedom is large: the statistical property of the Lyapunov spectrum is described by Random Matrix Theory. We demonstrate it by studying the finite-time Lyapunov exponents of the matrix model of a stringy black hole and the mass deformed models. The massless limit, which has a dual string theory interpretation, is special in that the universal behavior can be seen already at t=0, while in other cases it sets in at late time. The same pattern is demonstrated also in the product of random matrices.
description: 5 pages + supplementary materials. v2: minor corrections, references added. v3: a lot more evidence added. v4: the version appeared in Phys. Rev. E
Metadane dla Communication and Computing Task Allocation for Energy-Efficient Fog Networks
Creators: name: Bossy, Bartosz
Publisher: name: Zenodo
Year: 2023

description: This resource contains the metadata for Communication and Computing Task Allocation for Energy-Efficient Fog Networks
description: Sfinansowane przez Narodowe Centrum Nauki w ramach projektu Świeże i zielone komórkowe sieci obliczeniowe IoT - FitNets o numerze 2021/41/N/ST7/03941.
Effects of the distant population density on spatial patterns of demographic dynamics
Creators: name: Tamura, Kohei
name: Masuda, Naoki
Publisher: name: arXiv
Year: 2017
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Spatiotemporal patterns of population changes within and across countries have various implications. Different geographical, demographic and econo-societal factors seem to contribute to migratory decisions made by individual inhabitants. Focussing on internal (i.e., domestic) migration, we ask whether individuals may take into account the information on the population density in distant locations to make migratory decisions. We analyse population census data in Japan recorded with a high spatial resolution (i.e., cells of size 500 m $\times$ 500 m) for the entirety of the country and simulate demographic dynamics induced by the gravity model and its variants. We show that, in the census data, the population growth rate in a cell is positively correlated with the population density in nearby cells up to a radius of 20 km as well as that of the focal cell. The ordinary gravity model does not capture this empirical observation. We then show that the empirical observation is better accounted for by extensions of the gravity model such that individuals are assumed to perceive the attractiveness, approximated by the population density, of the source or destination cell of migration as the spatial average over a radius of $\approx 1$ km.
description: 22 figures, 2 tables, fixed an incorrect publication year
Ανάλυση οδοντογράμματος στην ταυτοποίηση
Creators: name: Καλπακίδης Θεόδωρος Λάζαρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Οδοντόγραμμα
Ταυτοποίηση
Δικαστική οδοντολογία
Odontogram
Forensic Identification
Forensic Odontology

description: Η διαδικασία ταυτοποίησης αποτελεί αναγκαίο στόχο στον τομέα της ιατροδικαστικής. Μία από τις πιο ευρέως διαδεδομένη και χρησιμοποιούμενη μέθοδος είναι αυτή της δικαστικής οδοντολογίας λόγω της ταχύτητας, αποτελεσματικότητας και των χαμηλών οικονομικών απαιτήσεων της. Η παρούσα διπλωματική εργασία αποσκοπεί στην ανασκόπηση των μεθόδων καταγραφής οδοντογραμμάτων καθώς και των ακτινογραφικών, ψηφιακών, λογισμικών και άλλων εργαλείων που διευκολύνουν την κατασκευή τόσο των προθανάτιων όσο και των μεταθανάτιων προφίλ και την σύγκρισή τους. Αναλύονται δυσκολίες και τρόποι παράκαμψης τους κατά την κατασκευή των προφίλ, όπως επίσης και τεχνολογικές εξελίξεις που διευκολύνουν την ολοκλήρωση του οδοντογράμματος. Η διαχρονική πολύτιμη συμβολή της δικαστικής οδοντολογίας και του οδοντογράμματος ως εργαλείο διεκπεραίωσης της αποτελούν αναντικατάστατα εργαλεία της ιατροδικαστικής και η παρούσα ανασκόπηση το υπογραμμίζει
description: Forensic identification is a fundamental step within the field of forensic medicine. One of the most widely used methodology is that of forensic odontology due to the low cost and speedy results. The current diploma thesis aims at reviewing the methodology of completing an odontogram as well as the radiographic, digital, software-aids, and other tools that ease the procedure of constructing and comparing antemortem and postmortem dental profiles. The value of both forensic odontology and even the odontogram itself are considered crucial in the procedure of identification and the current thesis underlines this very statement
Analyses and Scalable Algorithms for Byzantine-Resilient Distributed Optimization
Creators: name: Kuwaranancharoen, Kananart
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Optimisation
Distributed systems and algorithms

description: The advent of advanced communication technologies has given rise to large-scale networks comprised of numerous interconnected agents, which need to cooperate to accomplish various tasks, such as distributed message routing, formation control, robust statistical inference, and spectrum access coordination. These tasks can be formulated as distributed optimization problems, which require agents to agree on a parameter minimizing the average of their local cost functions by communicating only with their neighbors. However, distributed optimization algorithms are typically susceptible to malicious (or "Byzantine") agents that do not follow the algorithm. This thesis offers analysis and algorithms for such scenarios. As the malicious agent's function can be modeled as an unknown function with some fundamental properties, we begin in the first two parts by analyzing the region containing the potential minimizers of a sum of functions. Specifically, we explicitly characterize the boundary of this region for the sum of two unknown functions with certain properties. In the third part, we develop resilient algorithms that allow correctly functioning agents to converge to a region containing the true minimizer under the assumption of convex functions of each regular agent. Finally, we present a general algorithmic framework that includes most state-of-the-art resilient algorithms. Under the strongly convex assumption, we derive a geometric rate of convergence of all regular agents to a ball around the optimal solution (whose size we characterize) for some algorithms within the framework.
Κακοποίηση κατά την παροχή σεξουαλικών υπηρεσιών: η διαδικασία στο ακροατήριο του ποινικού δικαστηρίου (αρχές και δυσχέρειες)
Creators: name: Κολιούλης, Σπυρίδων Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: σεξουαλικές υπηρεσίες
κακοποίηση
ποινική δίκη
sex workers
abuse
criminal court

description: Η κακοποίηση, σε όλες τις εκφάνσεις της, με τη ραγδαία αύξηση των βίαιων περιστατικών σε παγκόσμια κλίμακα, αποτελεί πλέον ένα κοινωνικό φαινόμενο. Υπό αυτές τις περιστάσεις, τα ευάλωτα άτομα και ιδιαίτερα όσοι δραστηριοποιούνται σε επαγγέλματα που προϋποθέτουν την προσωπική αλληλεπίδραση, βρίσκουν τους εαυτούς τους σε ένα διαρκή κίνδυνο. Έτσι και οι εργαζόμενοι στην παροχή σεξουαλικών υπηρεσιών, επάγγελμα το οποίο εξ ορισμού συνδέεται με την ανθρώπινη συμπεριφορά, βρίσκονται πολύ συχνά αντιμέτωποι με κάθε είδους κακοποιητικές συμπεριφορές. Παρόλα αυτά, είναι σπάνιες οι περιπτώσεις που τα πρόσωπα αυτά θα απευθυνθούν στις αρχές καταγγέλλοντας τη βία που υφίστανται. Με την παρούσα εργασία σκοπός είναι να καταδειχθεί το είδος των εγκλημάτων που διαπράττονται σε βάρος τους, όσο και ο σκοτεινός αριθμός που χαρακτηρίζει την επίσημη καταγραφή τους και κυρίως να γίνει μία περιγραφή της διαδικασίας που ακολουθείται κατά την εκδίκαση τέτοιου είδους εγκλημάτων από τα ελληνικά δικαστήρια και των αρχών που διέπουν τη διαδικασία στο ακροατήριο, εστιάζοντας κυρίως στις δυσχέρειες που μπορεί να προκύψουν και τις συνέπειες που θα έχουν αναφορικά με την απόδειξη της καταγγελθείσας κακοποιητικής συμπεριφοράς και συνακόλουθα της προστασίας του θύματος
description: Abuse, in all its forms, due to the rapid increase of violent incidents worldwide, has become a social phenomenon. Under these circumstances, vulnerable individuals and especially those who are active in professions that require interpersonal interaction, find themselves constantly endangered. Therefore, sex workers, whose employment is by definition connected to human behavior, often have to confront all sorts of abusive behavior. Nevertheless, rare are the cases where those people will address authorities to denounce the violence they are subjected to. The purpose of this essay is to demonstrate the nature of the crimes committed against them, as well as the dark figure that characterizes their official records, and primarily to describe the undergoing legal proceedings taken for such crimes by the Greek Courts of justice, and the principles that govern the court hearing, focusing mainly on the obstacles that may arise and the effect the latter will have in relation to the conviction of the abusive behavior and thus the protection of the victim
Identity theorem for pro-$p$-groups
Creators: name: Mikhovich, Andrey
Publisher: name: arXiv
Year: 2017
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: We prove the Identity Theorem for pro-$p$-groups with a single defining relation giving a positive feedback to a question of Serre on the structure of relation modules. A construction of "conjurings" indicates finality of our result in a certain sense.
description: Comparing to previous versions several changes are made (now in English), proofs are expanded and corrected. Comments are welcome!
Criticality in Third Order Lovelock Gravity and the Butterfly effect
Creators: name: Qaemmaqami, Mohammad M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study third order Lovelock Gravity in $ D=7 $ at the critical point which three (A)dS vacua degenerate into one. We see there is not propagating graviton at the critical point. And also we compute the butterfly velocity for this theory at the critical point by considering the shock wave solutions near horizon, this is important to note that although there is no propagating graviton at the critical point, due to boundary gravitons the butterfly velocity is non-zero. Finally we observe that the butterfly velocity for third order Lovelock Gravity at the critical point in $ D=7 $ is less than the butterfly velocity for Einstein-Gauss-Bonnet Gravity at the critical point in $ D=7 $ which is less than the butterfly velocity in D = 7 for Einstein Gravity, $ v_{B}^{E.H}>v_{B}^{E.G.B}>v_{B}^{3rd\,\,Lovelock} $. Maybe we can conclude that by adding higher order curvature corrections to Einstein Gravity the butterfly velocity decreases.
description: 10 pages, No figure, Minor corrections
Construction of lattice Möbius domain wall fermions in the Schrödinger functional scheme
Creators: name: Murakami, Yuko
name: Ishikawa, Ken-Ichi
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: In this paper we construct the Möbius domain wall fermions (MDWF) in the Schrödinger functional (SF) scheme for the SU(3) gauge theory by adding a boundary operator at the temporal boundary of the SF scheme setup and investigate the property using the perturbation theory. The MDWFs we investigated include the optimal type domain wall, the overlap, the truncated domain wall, and the truncated overlap fermions. We observe the universality of the spectrum of the effective four-dimensional operator at the tree-level. The fermionic contribution to the universal one-loop beta function is reproduced for the MDWFs with a sufficiently large fifth dimensional extent.
description: 40 pages, 26 figures
Photonic orbital angular momentum transfer and magnetic skyrmion rotation
Creators: name: Yang, Wenrui
name: Yang, Huanhuan
name: Cao, Yunshan
name: Yan, Peng
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetic skyrmions are chiral quasiparticles that show promise for future spintronic applications such as skyrmion racetrack memories and logic devices because of their topological stability, small size (typically $\sim3-500$ nm), and ultralow threshold force to drive their motion. On the other hand, the ability of light to carry and deliver orbital angular momentum (OAM) in the form of optical vortices has attracted a lot of interest. In this work, we predict a photonic OAM transfer effect, by studying the dynamics of magnetic skyrmions subject to Laguerre-Gaussian optical vortices, which manifests a rotational motion of the skyrmionic quasiparticle around the beam axis. The topological charge of the optical vortex determines both the magnitude and the handedness of the rotation velocity of skyrmions. In our proposal, the twisted light beam acts as an optical tweezer to enable us displacing skyrmions over large-scale defects in magnetic films to avoid being captured.
description: 11 pages, 7 figures, accepted by Optics Express
Error Suppression for Hamiltonian Quantum Computing in Markovian Environments
Creators: name: Marvian, Milad
name: Lidar, Daniel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Hamiltonian quantum computing, such as the adiabatic and holonomic models, can be protected against decoherence using an encoding into stabilizer subspace codes for error detection and the addition of energy penalty terms. This method has been widely studied since it was first introduced by Jordan, Farhi, and Shor (JFS) in the context of adiabatic quantum computing. Here we extend the original result to general Markovian environments, not necessarily in Lindblad form. We show that the main conclusion of the original JFS study holds under these general circumstances: assuming a physically reasonable bath model, it is possible to suppress the initial decay out of the encoded ground state with an energy penalty strength that grows only logarithmically in the system size, at a fixed temperature.
description: updated to published version
Useful states and entanglement distillation
Creators: name: Leditzky, Felix
name: Datta, Nilanjana
name: Smith, Graeme
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive general upper bounds on the distillable entanglement of a mixed state under one-way and two-way LOCC. In both cases, the upper bound is based on a convex decomposition of the state into 'useful' and 'useless' quantum states. By 'useful', we mean a state whose distillable entanglement is non-negative and equal to its coherent information (and thus given by a single-letter, tractable formula). On the other hand, 'useless' states are undistillable, i.e., their distillable entanglement is zero. We prove that in both settings the distillable entanglement is convex on such decompositions. Hence, an upper bound on the distillable entanglement is obtained from the contributions of the useful states alone, being equal to the convex combination of their coherent informations. Optimizing over all such decompositions of the input state yields our upper bound. The useful and useless states are given by degradable and antidegradable states in the one-way LOCC setting, and by maximally correlated and PPT states in the two-way LOCC setting, respectively. We also illustrate how our method can be extended to quantum channels. Interpreting our upper bound as a convex roof extension, we show that it reduces to a particularly simple, non-convex optimization problem for the classes of isotropic states and Werner states. In the one-way LOCC setting, this non-convex optimization yields an upper bound on the quantum capacity of the qubit depolarizing channel that is strictly tighter than previously known bounds for large values of the depolarizing parameter. In the two-way LOCC setting, the non-convex optimization achieves the PPT-relative entropy of entanglement for both isotropic and Werner states.
description: 36 pages, 4 figures, 2 tables, comments welcome. v2: title change, includes new results about entanglement distillation under two-way LOCC and distillable entanglement of states with symmetries. v3: references updated. v4: accepted for publication in IEEE Transactions on Information Theory, added comparison to SDP bound from arXiv:1601.07940
Topological Phase Transition in a Molecular Hamiltonian with Symmetry and Pseudo-Symmetry, Studied through Quantum, Semi-Quantum and Classical Models
Creators: name: Dhont, Guillaume
name: Iwai, Toshihiro
name: Zhilinskii, Boris
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The redistribution of energy levels between energy bands is studied for a family of simple effective Hamiltonians depending on one control parameter and possessing axial symmetry and energy-reflection symmetry. Further study is made on the topological phase transition in the corresponding semi-quantum and completely classical models, and finally the joint spectrum of the two commuting observables $(H=E,J_z)$ (also called the lattice of quantum states) is superposed on the image of the energy-momentum map for the classical model. Through these comparative analyses, mutual correspondence is demonstrated to exist among the redistribution of energy levels between energy bands for the quantum Hamiltonian, the modification of Chern numbers of eigenline bundles for the corresponding semi-quantum Hamiltonian, and the presence of Hamiltonian monodromy for the complete classical analog. In particular, as far as the band rearrangement is concerned, a fine agreement is found between the redistribution of the energy levels described in terms of joint spectrum of energy and momentum in the full quantum model and the evolution of singularities of the energy-momentum map of the complete classical model. The topological phase transition observed in the present semi-quantum and the complete classical models are analogous to topological phase transitions of matter.
Geochus apicalis Broun 1921
Creators: name: Leschen, Richard A. B.
name: Davis, Steven
name: Brown, Samuel D. J.
name: Brav-Cubitt, Talia
name: Buckley, Thomas R.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Geochus
Geochus apicalis

description: GeOchUs apicalis Broun, 1921  (Fig. 16)
 Geochus apicalis Broun 1921: 569. Type locality: Gordon’s Knob, near Nelson.
 Type Depository. BMNH:LT,3 PLT; NZAC:1 PLT.
 Distribution. New Zealand (NN).
 Remarks. Broun did not indicate the number of specimens examined to establish this name. Five syntypes were located in the Broun collection (BMNH) and the NZAC: one that we designate as the lectotype to stabilize the epithet, with the four remaining becoming paralectotypes.
 We place this species into a species group with G. plagiatus.
 Type Material Examined. Lectotype, here designated (BMNH): card-mounted, “4115. [in Broun’s hand]// New Zealand. [red underline] Broun Coll. Brit. Mus. 1922-482.//Gordon’s. 15.11.1914 [in Broun’s hand]// Geochus apicalis. [in Broun’s hand]”. Paralectotypes (all card-mounted): 3 (BMNH), same as lectotype but one specimen carded dorsally, all with a full stop “.” after the Broun number, and one specimen lacking Broun’s identification label; 1 (NZAC), “Gordon’s Knob. 15.11.1914 [in Broun’s hand]// Geochus apicalis. [in Broun’s hand]// T. Broun Dup. Coll.”.
description: Published as part of Leschen, Richard A. B., Davis, Steven, Brown, Samuel D. J., Brav-Cubitt, Talia & Buckley, Thomas R., 2022, The Enigmatic Dead-Leaf Miner Geochus Broun (Coleoptera: Curculionidae): Phylogenetic Placement, a New Species, and Lectotype Designations, pp. 1-35 in The Coleopterists Bulletin 76 (1) on pages 12-13, DOI: 10.1649/0010-065X-76.1.1, http://zenodo.org/record/13529302
Estimation of starting times of quasinormal modes in ringdown gravitational waves with the Hilbert-Huang transform
Creators: name: Sakai, Kazuki
name: Oohara, Ken-ichi
name: Nakano, Hiroyuki
name: Kaneyama, Masato
name: Takahashi, Hirotaka
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is known that a quasinormal mode (QNM) of a remnant black hole dominates a ringdown gravitational wave (GW) in a binary black hole (BBH) merger. To study properties of the QNMs, it is important to determine the time when the QNMs appear in a GW signal as well as to calculate its frequency and amplitude. In this paper, we propose a new method of estimating the starting time of the QNM and calculating the QNM frequency and amplitude of BBH GWs. We apply it to simulated merger waveforms by numerical relativity and the observed data of GW150914. The results show that the obtained QNM frequencies and time evolutions of amplitudes are consistent with the theoretical values within 1% accuracy for pure waveforms free from detector noise. In addition, it is revealed that there is a correlation between the starting time of the QNM and the spin of the remnant black hole. In the analysis of GW150914, we show that the parameters of the remnant black hole estimated through our method are consistent with those given by LIGO and a reasonable starting time of the QNM is determined.
description: 12 pages, 12 figures
Volumes of $\mathrm{SL}_n\mathbb{C}$-representations of hyperbolic 3-manifolds
Creators: name: Pitsch, Wolfgang
name: Porti, Joan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 14D20 (57M50 22E41 57R20)

description: Let $M$ be a compact oriented three-manifold whose interior is hyperbolic of finite volume. We prove a variation formula for the volume on the variety of representations of $M$ in $\operatorname{SL}_n(\mathbb C)$. Our proof follows the strategy of Reznikov's rigidity when $M$ is closed, in particular we use Fuks' approach to variations by means of Lie algebra cohomology. When $n=2$, we get back Hodgson's formula for variation of volume on the space of hyperbolic Dehn fillings. Our formula also yields the variation of volume on the space of decorated triangulations obtained by Bergeron-Falbel-Guillou and Dimofte-Gabella-Goncharov.
description: 31 pages
Wandering in the Lyman-alpha Forest: A Study of Dark Matter-Dark Radiation Interactions
Creators: name: Krall, Rebecca
name: Cyr-Racine, Francis-Yan
name: Dvorkin, Cora
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The amplitude of large-scale matter fluctuations inferred from the observed Sunyaev-Zeldovich (SZ) cluster mass function and from weak gravitational lensing studies, when taken at face value, is in tension with measurements of the cosmic microwave background (CMB) and baryon acoustic oscillation (BAO). In this work, we revisit whether this possible discrepancy can be attributed to new interactions in the dark matter sector. Focusing on a cosmological model where dark matter interacts with a dark radiation species until the epoch of matter-radiation equality, we find that measurements of the Lyman-alpha flux power spectrum from the Sloan Digital Sky Survey provides no support to the hypothesis that new dark matter interactions can resolve the possible tension between CMB and large-scale structure (LSS). Indeed, while the addition of dark matter-dark radiation interactions leads to an improvement of $2Δ\ln\mathcal{L}=12$ with respect to the standard $Λ$ cold dark matter ($Λ$CDM) model when only CMB, BAO, and LSS data are considered, the inclusion of Lyman-alpha data reduces the improvement of the fit to $2Δ\ln\mathcal{L}=6$ relative to $Λ$CDM. We thus conclude that the statistical evidence for new dark matter interactions (largely driven by the Planck SZ dataset) is marginal at best, and likely caused by systematics in the data. We also perform a Fisher forecast analysis for the reach of a future dataset composed of a CMB-S4 experiment combined with the Large Synoptic Survey Telescope galaxy survey. We find that the constraint on the effective number of fluid-like dark radiation species, $ΔN_{\rm fluid}$, will be improved by an order of magnitude compared to current bounds.
description: 11 pages + references, 3 figures, 3 tables, v2: added references,v3: published version
Direct Observation of Attractive Skyrmions and Skyrmion Clusters in the Cubic Helimagnet Cu$_2$OSeO$_3$
Creators: name: Loudon, J. C.
name: Leonov, A. O.
name: Bogdanov, A. N.
name: Hatnean, M. Ciomaga
name: Balakrishnan, G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report the discovery of attractive magnetic skyrmions and their clusters in non-centrosymmetric ferromagnets. These three-dimensional solitons have been predicted to exist in the cone phase of chiral ferromagnets (J. Phys: Condens. Matter 28 (2016) 35LT01) and are fundamentally different from the more common repulsive axisymmetric skyrmions that occur in the magnetically saturated state. We present real-space images of these skyrmion clusters in thin (~70 nm) single-crystal samples of Cu$_2$OSeO$_3$ taken using transmission electron microscopy and develop a phenomenological theory describing this type of skyrmion.
description: 4 pages, 4 figures and supplementary information
Superuniversal transport near a $(2 + 1)$-dimensional quantum critical point
Creators: name: Rose, Félix
name: Dupuis, Nicolas
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the zero-temperature conductivity in the two-dimensional quantum $\mathrm{O}(N)$ model using a nonperturbative functional renormalization-group approach. At the quantum critical point we find a universal conductivity $σ^*/σ_Q$ (with $σ_Q=q^2/h$ the quantum of conductance and $q$ the charge) in reasonable quantitative agreement with quantum Monte Carlo simulations and conformal bootstrap results. In the ordered phase the conductivity tensor is defined, when $N\geq 3$, by two independent elements, $σ_{\mathrm{A}}(ω)$ and $σ_{\mathrm{B}}(ω)$, respectively associated to $\mathrm{O}(N)$ rotations which do and do not change the direction of the order parameter. Whereas $σ_{\mathrm{A}}(ω\to 0)$ corresponds to the response of a superfluid (or perfect inductance), the numerical solution of the flow equations shows that $\lim_{ω\to 0}σ_{\mathrm{B}}(ω)/σ_Q=σ_{\mathrm{B}}^*/σ_Q$ is a superuniversal (i.e. $N$-independent) constant. These numerical results, as well as the known exact value $σ_{\mathrm{B}}^*/σ_Q=π/8$ in the large-$N$ limit, allow us to conjecture that $σ_{\mathrm{B}}^*/σ_Q=π/8$ holds for all values of $N$, a result that can be understood as a consequence of gauge invariance and asymptotic freedom of the Goldstone bosons in the low-energy limit.
description: 6 pages, 4 figures, published version
Geochus certus Broun 1921
Creators: name: Leschen, Richard A. B.
name: Davis, Steven
name: Brown, Samuel D. J.
name: Brav-Cubitt, Talia
name: Buckley, Thomas R.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Geochus
Geochus certus

description: GeOchUs certUs Broun, 1921  (Fig. 16)
 Geochus certus Broun 1921: 570. Type locality: Howard River, near Glenhope.
 Type Depository. BMNH: HT.
 Distribution. New Zealand (NN).
 Remarks. Broun based the description on a single specimen that we confirmed as the holotype.
 We place this species into a species group with G. plagiatus.
 Type Material Examined. Holotype (BMNH): card-mounted, “4116. [in Broun’s hand]// New Zealand. [red underline] Broun Coll. Brit. Mus. 1922-482.//Howard. 27.3.1915. [in Broun’s hand]// Geochus certus. [in Broun’s hand]”.
description: Published as part of Leschen, Richard A. B., Davis, Steven, Brown, Samuel D. J., Brav-Cubitt, Talia & Buckley, Thomas R., 2022, The Enigmatic Dead-Leaf Miner Geochus Broun (Coleoptera: Curculionidae): Phylogenetic Placement, a New Species, and Lectotype Designations, pp. 1-35 in The Coleopterists Bulletin 76 (1) on page 14, DOI: 10.1649/0010-065X-76.1.1, http://zenodo.org/record/13529302
Pair correlation for quadratic polynomials mod 1
Creators: name: Marklof, Jens
name: Yesha, Nadav
Publisher: name: arXiv
Year: 2017
Subjects: subject: Number Theory (math.NT)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: It is an open question whether the fractional parts of nonlinear polynomials at integers have the same fine-scale statistics as a Poisson point process. Most results towards an affirmative answer have so far been restricted to almost sure convergence in the space of polynomials of a given degree. We will here provide explicit Diophantine conditions on the coefficients of polynomials of degree 2, under which the convergence of an averaged pair correlation density can be established. The limit is consistent with the Poisson distribution. Since quadratic polynomials at integers represent the energy levels of a class of integrable quantum systems, our findings provide further evidence for the Berry-Tabor conjecture in the theory of quantum chaos.
description: Revised version. To appear in Compositio Mathematica
Temperature profile in a liquid-vapor interface near the critical point
Creators: name: Gouin, Henri
name: Seppecher, Pierre
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Thanks to an expansion with respect to densities of energy, mass and entropy, we discuss the concept of thermocapillary fluid for inhomogeneous fluids. The non-convex state law valid for homogeneous fluids is modified by adding terms taking into account the gradients of these densities. This seems more realistic than Cahn and Hilliard's model which uses a density expansion in mass-density gradient only. Indeed, through liquid-vapor interfaces, realistic potentials in molecular theories show that entropy density and temperature do not vary with the mass density as it would do in bulk phases. In this paper, we prove using a rescaling process near the critical point that liquid-vapor interfaces behave essentially in the same way as in Cahn and Hilliard's model.
description: Proceedings of the Royal Society of London. Series A, Mathematical and physical sciences, Royal Society, The, 2017
Barjols, enfants jouant au furet sur la place du Capitaine-Vincens
Creators: name: Musée National Des Arts Et Traditions Populaires (Paris)
name: Centre D'ethnologie Française
Publisher: name: École des Hautes Études en Sciences Sociales; Institut  interdisciplinaire d'anthropologie du contemporain (Paris); Laboratoire d'anthropologie et d'histoire de l'institution de la culture (Paris)
Year: 2024

Abstract
A variation principle for ground spaces
Creators: name: Weis, Stephan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Physics (math-ph)
subject: Operator Algebras (math.OA)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 52A20, 52B05, 51D25, 47L07, 47A12, 81P16, 62F30, 94A17

description: The ground spaces of a vector space of hermitian matrices, partially ordered by inclusion, form a lattice constructible from top to bottom in terms of intersections of maximal ground spaces. In this paper we characterize the lattice elements and the maximal lattice elements within the set of all subspaces using constraints on operator cones. Our results contribute to the geometry of quantum marginals, as their lattices of exposed faces are isomorphic to the lattices of ground spaces of local Hamiltonians.
description: 18 pages, 2 figures, version v3 has an improved exposition, v4 has a new non-commutative example and catches a glimpse of three qubits
Search for pair production of vector-like top quarks in events with one lepton, jets, and missing transverse momentum in $\sqrt{s} = 13$ TeV pp collisions with the ATLAS detector
Creators: name: The ATLAS Collaboration
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The results of a search for vector-like top quarks using events with exactly one lepton, at least four jets, and large missing transverse momentum are reported. The search is optimised for pair production of vector-like top quarks in the $Z(\rightarrow \! \! νν) \, t + X$ decay channel. LHC pp collision data at a centre-of-mass energy of $\sqrt{s}=13$ TeV recorded by the ATLAS detector in 2015 and 2016 are used, corresponding to an integrated luminosity of 36.1 $\mathrm{fb}^{-1}$. No significant excess over the Standard Model expectation is seen and upper limits on the production cross-section of a vector-like $T$ quark pair as a function of the $T$ quark mass are derived. The observed (expected) 95% CL lower limits on the $T$ mass are 870 GeV (890 GeV) for the weak-isospin singlet model, 1.05 TeV (1.06 TeV) for the weak-isospin doublet model and 1.16 TeV (1.17 TeV) for the pure $Zt$ decay mode. Limits are also set on the mass as a function of the decay branching ratios, excluding large parts of the parameter space for masses below 1 TeV.
description: 39 pages in total, author list starting page 23, 7 figures, 5 tables, submitted to JHEP, All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2016-15/
Geochus distinguens Broun
Creators: name: Leschen, Richard A. B.
name: Davis, Steven
name: Brown, Samuel D. J.
name: Brav-Cubitt, Talia
name: Buckley, Thomas R.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Geochus
Geochus distinguens

description: GeOchUs distingUens Broun, 1914  (Fig. 17)
 Geochus distinguens Broun 1914b: 570. Type locality: Epsom, Mount Eden, Auckland.
 Type Depository. BMNH: HT.
 Distribution. New Zealand (AK).
 Remarks. Broun based the description on a single specimen that we confirmed as the holotype.
 We place this species into a species group with G. politus.
 Type Material Examined. Holotype (BMNH): card-mounted, “3616. [in Broun’s hand]// New Zealand. [red underline] Broun Coll. Brit. Mus. 1922-482.//Epsom. 12.2.1912. [in Broun’s hand]// Geochus distinguens [in Broun’s hand]”.
description: Published as part of Leschen, Richard A. B., Davis, Steven, Brown, Samuel D. J., Brav-Cubitt, Talia & Buckley, Thomas R., 2022, The Enigmatic Dead-Leaf Miner Geochus Broun (Coleoptera: Curculionidae): Phylogenetic Placement, a New Species, and Lectotype Designations, pp. 1-35 in The Coleopterists Bulletin 76 (1) on page 16, DOI: 10.1649/0010-065X-76.1.1, http://zenodo.org/record/13529302
Η διερεύνηση των επιπέδων του στρες και της επαγγελματικής εξουθένωσης σε επαγγελματίες ψυχικής υγείας που παρέχουν υπηρεσίες σε τηλεφωνικές γραμμές υποστήριξης, κατά τη διάρκεια της πανδημίας του Covid-19
Creators: name: Βλέτσα, Σταυρούλα Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Επαγγελματική εξουθένωση
Αντιλαμβανόμενο στρες
Τηλεφωνικές γραμμές υποστήριξης
Burn out
Perceived stress
Telephone support lines

description: Το στρες και η επαγγελματική εξουθένωση, που πηγάζουν από το χώρο εργασίας, μπορεί να επιφέρουν σημαντικές αρνητικές επιπτώσεις στις ζωές των ανθρώπων. Σκοπός της συγκεκριμένης μελέτης είναι να διερευνήσει την επίδραση της παρατεταμένης πανδημίας στην εμφάνιση στρες και επαγγελματικής εξουθένωσης, σε επαγγελματίες ψυχικής υγείας, που στελεχώνουν τηλεφωνικές γραμμές υποστήριξης. Η συγχρονική αυτή μελέτη πραγματοποιήθηκε σε εξήντα τρεις Έλληνες επαγγελματίες ψυχικής υγείας ανεξαρτήτως ηλικίας, από το Δεκέμβριο του 2022 έως και τον Φεβρουάριο του 2023. Το αντιλαμβανόμενο στρες εξετάστηκε με την Κλίμακα Αντιλαμβανόμενου Άγχους- Perceived Stress Scale, ενώ τα επίπεδα επαγγελματικής εξουθένωσης εξετάστηκαν με το ερωτηματολόγιο Επαγγελματικής Εξουθένωσης της Maslach (MBI). Τα αποτελέσματα της έρευνας έδειξαν πώς τα επίπεδα αντιλαμβανόμενου στρες ήταν υψηλότερα από το κανονικό, σε ένα μεγάλο ποσοστό του συνολικού δείγματος, ενώ παράλληλα η εμφάνιση συμπτωμάτων επαγγελματικής εξουθένωσης, συσχετίστηκε θετικά με την εμφάνιση αντιλαμβανόμενου στρες. Συμπερασματικά, η παρούσα εργασία επιχειρεί να συμβάλει στην καλύτερη κατανόηση των φαινομένων της επαγγελματικής εξουθένωσης και του στρες, δίνοντας έμφαση στο κομμάτι της επιρροής της παρατεταμένης πανδημίας
description: Stress and burnout, stemming from the workplace, can have a significant negative impact on people's lives. The aim of the present thesis was to investigate the effect of the prolonged pandemic on the occurrence of stress and burnout in mental health professionals who staff telephone support lines. This cross-sectional study was carried out on sixty-three Greek mental health professionals regardless of age, from December 2022 to February 2023. Perceived stress was examined with the Perceived Stress Scale, while the levels burnout was examined with the Maslach Burnout Questionnaire (MBI). The results of the survey showed that perceived stress levels were higher than normal in a large proportion of the total sample. The occurrence of burnout symptoms was positively correlated with the occurrence of perceived stress. In conclusion, this paper attempts to contribute to a better understanding of the phenomena of occupational burnout and stress, emphasizing the part of the influence of the prolonged pandemic.
Perturbative solution for the spectral gap of the weakly asymmetric exclusion process
Creators: name: Prolhac, Sylvain
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider the weakly asymmetric exclusion process with $N=L/2$ particles on a periodic lattice of $L$ sites, and hopping rates $1$ and $q=1-μ/\sqrt{L}$ respectively in the forward and in the backward direction. Using Bethe ansatz, we obtain a systematic perturbative expansion of the spectral gap near $μ=0$ by solving order by order a simple functional equation. A key point is that when $μ\to0$, Bethe roots at a distance $1/\sqrt{L}$ from the edge of the Fermi sea should not be considered as a continuum, but converge instead at large $L$ to the complex zeroes of $1+\mathrm{erf}(x)$ after a rescaling by $\sqrt{L}$.
description: 28 pages, 5 figures
Patterns and partners for chiral symmetry restoration
Creators: name: Nicola, A. Gomez
name: de Elvira, J. Ruiz
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present and analyze a new set of Ward Identities which shed light on the distinction between different patterns of chiral symmetry restoration in QCD, namely $O(4)$ vs $O(4)\times U(1)_A$. The degeneracy of chiral partners for all scalar and pseudoscalar meson nonet members are studied through their corresponding correlators. Around chiral symmetry degeneration of $O(4)$ partners, our analysis predicts that $U(1)_A$ partners are also degenerated. Our analysis also leads to $I=1/2$ scalar-pseudoscalar partner degeneration at exact chiral restoration, and supports ideal mixing between the $η$-$η^\prime$ and the $f_0(500)$-$f_0(980)$ mesons at $O(4)\times U(1)_A$ restoration, with a possible range where the pseudoscalar mixing vanishes if the two transitions are well separated. We test our results with lattice data and provide further relevant observables regarding chiral and $U(1)_A$ restoration for future lattice and model analyses.
description: 12 pages and 4 figures. Minor clarifications added. Version accepted in Phys. Rev. D
Active rotational and translational microrheology beyond the linear spring regime
Creators: name: Gibson, Lachlan J.
name: Zhang, Shu
name: Stilgoe, Alexander B.
name: Nieminen, Timo A.
name: Rubinsztein-Dunlop, Halina
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Active particle tracking microrheometers have the potential to perform accurate broad-band measurements of viscoelasticity within microscopic systems. Generally, their largest possible precision is limited by Brownian motion and low frequency changes to the system. The signal to noise ratio is usually improved by increasing the size of the driven motion compared to the Brownian as well as averaging over repeated measurements. New theory is presented here which gives the complex shear modulus when the motion of a spherical particle is driven by non-linear forces. In some scenarios error can be further reduced by applying a variable transformation which linearises the equation of motion. This allows normalisation which eliminates low frequency drift in the particle's equilibrium position. Using this method will easily increase the signal strength enough to significantly reduce the measurement time for the same error. Thus the method is more conducive to measuring viscoelasticity in slowly changing microscopic systems, such as a living cell.
description: 9 pages, 2 figures
Ιατροδικαστικά περιστατικά στο τμήμα επειγόντων περιστατικών (ΤΕΠ) : (Νοσηλευτική προσέγγιση)
Creators: name: Ιωαννίδου, Σοφία Ανθιμου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Ιατροδικαστική Νοσηλευτική
Τμήματα Επειγόντων Περιστατικών
Τραύμα, Θύματα
Forensic Nursing
Emergency Department
Trauma, Victims

description: Ο τομέας της εγκληματολογικής νοσηλευτικής είναι ένας όλο και πιο σημαντικός τομέας εμπειρογνωμοσύνης στο νοσηλευτικό επάγγελμα. Αυτή η διατριβή εξετάζει την παρουσία της ιατροδικαστικής στην ΤΕΠ και τον ρόλο των νοσηλευτών με ιατροδικαστικές γνώσεις στην παροχή βασικών υπηρεσιών σε θύματα σεξουαλικής επίθεσης, τη μελέτη του θανάτου μέσω της επιστήμης και τις παραβιάσεις των δικαιωμάτων των γυναικών και των παιδιών. Επιπλέον, η διατριβή διερευνά την έννοια των «ιατροδικαστικών ασθενών» και την ανάγκη εκπαίδευσης των νοσηλευτών στις ιατροδικαστικές διαδικασίες στα τμήματα επειγόντων περιστατικών. Η διατριβή περιλαμβάνει δύο περιπτωσιολογικές μελέτες, υπογραμμίζοντας τη σημασία της ιατροδικαστικής γνώσης στην παροχή αποτελεσματικής φροντίδας των ασθενών. Η μελέτη ολοκληρώνεται συζητώντας τις μελλοντικές προοπτικές της νοσηλευτικής με ιατροδικαστικές γνώσεις, συμπεριλαμβανομένης της δυνατότητας για νέες υποειδικότητες και την εμφάνιση νοσηλευτών ειδικότητας εγκληματολογικής ψυχιατρικής. Τελικά, αυτή η διατριβή υπογραμμίζει τον κρίσιμο ρόλο της ιατροδικαστικής νοσηλευτικής στην παροχή ολοκληρωμένης φροντίδας στα θύματα τραύματος και βίας
description: The field of forensic nursing is an increasingly important area of expertise within the nursing profession. This thesis examines the presence of forensics in ED and the role of nurses with forensic knowledge in providing basic services to victims of sexual assault, study of death through science, and violations of the rights of women and children. Additionally, the thesis explores the concept of "forensic patients" and the need for nurses to be trained in forensic procedures in emergency departments. The thesis includes two case studies, highlighting the importance of forensic knowledge in providing effective patient care. The study concludes by discussing the future prospects of nursing with forensic knowledge, including the potential for new sub-specialties and the emergence of forensic psychiatric specialty nurses. Ultimately, this thesis highlights the critical role of forensic nursing in providing comprehensive care to victims of trauma and violence