cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Studies in the theory of multiband superconductors
Creators: name: Wilson, Brendan John
Publisher: name: The Australian National University
Year: 2015
Subjects: BCS
Ginzburg-Landau
superconductivity
multiband
vortex
skymion

description: While the theory of multiband superconductivity has existed since the work of Suhl et al. and Moskalenko, it has only been with the discovery of superconductivity in magnesium diboride that this theory could be applied to real materials. The list of possible multiband superconductors has steadily grown, and these materials have attractive properties that warrant further investigation. In this thesis we look at two theories of multiband superconductivity and the connection between them. The first theory is the multiband generalisation of the microscopic theory of Bardeen, Cooper and Schrieffer (BCS). In the case of three superconducting bands, it is well known that there can exist a phase transition to a new phase of superconductivity, the time-reversal-symmetry-broken (TRSB) state. We show that in this state the full multiband theory reduces exactly to solving a set of independent one-band equations. In addition, this reduction produces a set of conditions among these one-band solutions which must be satisfied for them to be solutions of the full multiband equations. These conditions can therefore be used to find the TRSB transition temperature. The phenomenological Ginzburg-Landau theory (GL), which can be derived as an expansion of BCS theory around the critical temperature, has also had a multiband generalisation which was first derived by Tilley. Peeter’s and co-workers recently used the Gor’kov technique to find the next order corrections to the theory, extending the validity to slightly lower temperatures. We restrict ourselves to the field-free case and find extensions to very high order. We show that in the one-band theory and most multiband cases the superconducting gap in this extended GL theory converges to the BCS theory over almost the entire temperature range. However there are some cases in the multiband theory where the GL expansion diverges. This divergence is related to the appearance of a second critical temperature in the uncoupled limit. Finally we apply a range of numerical methods to find vortex and skyrmion states in multiband superconductors. The skyrmion states are variations of the well-known vortex states, and only appear when the bulk superconductor is in the TRSB state. We find that, with the bulk in the TRSB state, the low order skyrmion solutions are very robust and are very likely to evolve from a random initial configuration. However the higher order skyrmion states are instead likely to form a collection of lower order skyrmions and vortices, and a large amount of control is required to form them.
Mittheilung bezüglich der Zucht der wilden Seidenraupe Yama-mayu (Saturnia Cynthia) in Japan
Creators: name: Dr. Haupt, .
Publisher: name: Acta Albertina Ratisbonensia
Year: 2017

description: ...
description: Acta Albertina Ratisbonensia, Bd. 18 (1864): Correspondenzblatt
Chiral susceptibility in Nambu Jona Lasinio model: a Wigner function approach
Creators: name: Das, Arpan
name: Kumar, Deepak
name: Mishra, Hiranmaya
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We estimate here chiral susceptibility at finite temperature within the framework of the Nambu-Jona-Lasinio model (NJL) using the Wigner function approach. We also estimate it in the presence of chiral chemical potential ($μ_5$) as well as a non vanishing magnetic field ($B$). We use medium separation regularization scheme (MSS) to calculate the chiral condensate and corresponding susceptibility. It is observed that for a fixed value of chiral chemical potential ($μ_5$), transition temperature increases with the magnetic field. While for the fixed value of the magnetic field, transition temperature decreases with chiral chemical potential. For a strong magnetic field, we observe non degeneracy in susceptibility for up and down type quarks.
description: 31 pages, 6 figures
Photon recycling white light emitting diode based on InGaN multiple quantum well heterostructure
Creators: name: Nikolaev, V. V.
name: Portnoi, M. E.
name: Eliashevich, I.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A numerical method based on the transfer matrix technique is developed to calculate the luminescence spectra of complex layered structures with photon recycling. Using this method we show a strong dependence of the emission spectra on the optical eigenmode structure of the device. The enhancement of the photon recycling and the LED external efficiency can be achieved by placing the active regions inside single or coupled microcavities.
description: 5 pages, 1 figure
Magnetoresistance through spin polarized p-states
Creators: name: Papanikolaou, Nikos
Publisher: name: arXiv
Year: 2002
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a theoretical study of the ballistic magnetoresistance in Ni contacts using first-principles, atomistic electronic-structure calculations. In particular we investigate the role of defects in the contact region in order to explain the recently observed spectacular magnetoresistance ratio. Our results predict that possible presence of spin polarized oxygen in the contact region, could explain conductance changes by an order of magnitude. Electronic transport essentially occurs through spin-polarized oxygen p states, and this mechanism gives a much higher magnetoresistance than that obtained assuming clean atomically sharp domain walls alone.
description: Title changed, abstract changed, text revision, figures unchanged
Pratica para Baptizar adultos no Reyno de Angola
Creators: name: :Unkn
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2023

description: Pratica para Baptizar adultos no Reyno de Angola ?
The Weyl tensor two-point function in de Sitter spacetime
Creators: name: Kouris, Spyros S.
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present an expression for the Weyl-Weyl two-point function in de Sitter spacetime, based on a recently calculated covariant graviton two-point function with one gauge parameter. We find that the Weyl-Weyl two-point function falls off with distance like r^{-4}, where r is spacelike coordinate separation between the two points.
description: 9 pages, no figures
Additional file 3: of Implementation fidelity of provider-initiated HIV testing and counseling of tuberculosis patients under the National Tuberculosis Control Program in Kathmandu District of Nepal: an implementation research
Creators: name: Randeep Kumar
name: Probandari, Ari
name: Biwesh Ojha
name: Ashmin Bhattarai
name: Yanri Subronto
Publisher: name: figshare
Year: 2019
Subjects: subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Key Informant Interview and Indepth Interview Guide. (DOCX 16 kb)
Multi-fractality of the entanglement Hamiltonian eigen-modes
Creators: name: Pouranvari, Mohammad
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the fractal properties of single-particle eigen-modes of entanglement Hamiltonian in free fermion models. One of these modes that has the highest entanglement information and thus called maximally entangled mode (MEM) is specially considered. In free Fermion models with Anderson localization, fractality of MEM is obtained numerically and compared with the fractality of Hamiltonian eigen-mode at Fermi level. We show that both eigen-modes have similar fractal properties: both have same single fractal dimension in delocalized phase which equals the dimension of the system, and both show multi-fractality at phase transitio point. Therefore, we conclude that, fractal behavior of MEM -- in addition to the fractal behavior of Hamiltonian eigen-mode -- can be used as a quantum phase transition characterization.
description: 8 pages, 9 figures
Formation of short-period planets by disk migration
Creators: name: Carrera, Daniel
name: Ford, Eric B.
name: Izidoro, Andre
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Protoplanetary disks are thought to be truncated at orbital periods of around 10 days. Therefore, origin of rocky short period planets with $P < 10$ days is a puzzle. We propose that many of these planets may form through the Type-I migration of planets locked into a chain of mutual mean motion resonances. We ran N-body simulations of planetary embryos embedded in a protoplanetary disk. The embryos experienced gravitational scatterings, collisions, disk torques, and dampening of orbital eccentricity and inclination. We then modelled Kepler observations of these planets using a forward model of both the transit probability and the detection efficiency of the Kepler pipeline. We found that planets become locked into long chains of mean motion resonances that migrate in unison. When the chain reaches the edge of the disk, the inner planets are pushed past the edge due to the disk torques acting on the planets farther out in the chain. Our simulated systems successfully reproduce the observed period distribution of short period Kepler planets between 1 and 2 $R_\oplus$. However, we obtain fewer closely packed short period planets than in the Kepler sample. Our results provide valuable insight into the planet formation process, and suggests that resonance locks, migration, and dynamical instabilities play important roles the the formation and evolution of close-in small exoplanets.
description: 12 pages, 11 figures, submitted to MNRAS
Hot prominence spicules launched from turbulent cool solar prominences
Creators: name: Chitta, L. P.
name: Peter, H.
name: Li, L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A solar filament is a dense cool condensation that is supported and thermally insulated by magnetic fields in the rarefied hot corona. Its evolution and stability, leading to either an eruption or disappearance, depend on its coupling with the surrounding hot corona through a thin transition region, where the temperature steeply rises. However, the heating and dynamics of this transition region remain elusive. We report extreme-ultraviolet observations of quiescent filaments from the Solar Dynamics Observatory that reveal prominence spicules propagating through the transition region of the filament-corona system. These thin needle-like jet features are generated and heated to at least 0.7 MK by turbulent motions of the material in the filament. We suggest that the prominence spicules continuously channel the heated mass into the corona and aid in the filament evaporation and decay. Our results shed light on the turbulence-driven heating in magnetized condensations that are commonly observed on the Sun and in the interstellar medium.
description: Online movie available at https://www.aanda.org/articles/aa/olm/2019/07/aa36027-19/aa36027-19.html
Photoinduced nematic state in FeSe$_{0.4}$Te$_{0.6}$
Creators: name: Fanfarillo, Laura
name: Kopić, Damir
name: Sterzi, Andrea
name: Manzoni, Giulia
name: Crepaldi, Alberto
name: Tsurkan, Vladimir
name: Croitori, Dorina
name: Deisenhofer, Joachim
name: Parmigiani, Fulvio
name: Capone, Massimo
name: Cilento, Federico
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: FeSe$_{x}$Te$_{1-x}$ compounds present a complex phase diagram, ranging from the nematicity of FeSe to the $(π, π)$ magnetism of FeTe. We focus on FeSe$_{0.4}$Te$_{0.6}$, where the nematic ordering is absent at equilibrium. We use a time-resolved approach based on femtosecond light pulses to study the dynamics following photoexcitation in this system. The use of polarization-dependent time- and angle-resolved photoelectron spectroscopy allows us to reveal a photoinduced nematic metastable state, whose stabilization cannot be interpreted in terms of an effective photodoping. We argue that the 1.55 eV photon-energy-pump-pulse perturbs the $C_4$ symmetry of the system triggering the realization of the nematic state. The possibility to induce nematicity using an ultra-short pulse sheds a new light on the driving force behind the nematic symmetry breaking in iron-based superconductors. Our results weaken the idea that a low-energy coupling with fluctuations is a necessary condition to stabilize the nematic order and ascribe the origin of the nematic order in iron-based superconductors to a clear tendency of those systems towards orbital differentiation due to strong electronic correlations induced by the Hund's coupling.
description: 7 pages, 3 figures
Photometric variability of binary hot subdwarf stars: from ground to TESS
Creators: name: Pelisoli, Ingrid
Publisher: name: Zenodo
Year: 2019

description: Hot subdwarf stars are evolved, subluminous, helium-burning stars, most likely formed when red-giant stars lose their hydrogen envelope via interactions with close companions. They play an important role in our understanding of binary evolution, stellar atmospheres and interiors, and of the Galaxy itself. Hot subdwarfs that are still in a binary following their formation can show variability due to multiple effects, including eclipses, reflection, and ellipsoidal deformation. Modelling the light curves of such systems can provide constraints not only to the nature of the hot subdwarf star itself, but can also constrain the nature of the companion star, providing valuable input to evolutionary models of the formation of hot subdwarfs, which still have several open questions. Taking advantage of public ground surveys, we have searched for variability in known hot subdwarf stars. About a hundred new variables were identified, many of which were included in the target list for the Transiting Exoplanet Survey Satellite (TESS), which has been gathering light curves for thousands of nearby stars. In this talk, I will present results from our search for variable binary subdwarfs, from the identification of new variables in ground surveys, to the latest results obtained from TESS.
Ground-state properties of two-dimensional dimerized Heisenberg models
Creators: name: Sirker, J.
name: Klümper, A.
name: Hamacher, K.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The purpose of this paper is to investigate the ground-state properties of two-dimensional Heisenberg models on a square lattice with a given dimerization. Our aim is threefold: First, we want to investigate the dimensional transition from two to one dimension for three models consisting of weakly coupled chains for large dimerizations. Simple scaling arguments show that the interchain coupling is always relevant. The ground states of two of these models therefore have one-dimensional nature only at the decoupling point. The third considered model is more complicated, because it contains additional relevant intrachain couplings leading to a gap as shown by scaling arguments and numerical investigations. Second, we investigate at which point the dimerization destroys the Néel ordered ground state of the isotropic model. Within a mapping to a nonlinear sigma-model and linear spinwave theory (LSWT) we conclude that the stability of the Néel ordered state depends on the microscopic details of the model. Third, the considered models also can be regarded as effective models for a spin system with spin-phonon coupling. This leads to the question if a spin-Peierls transition, i.e. a gain of total energy due to lattice distortion, is possible. LSWT shows that such a transition is possible under certain conditions leading to a coexistence of long-range order and spin-Peierls dimerization. We also find that the gain of magnetic energy is largest for a stair-like distortion of the lattice.
description: 13 pages, 11 figures, revtex
Additional file 3: of Genome comparison between clinical and environmental strains of Herbaspirillum seropedicae reveals a potential new emerging bacterium adapted to human hosts
Creators: name: Helisson Faoro
name: Oliveira, Willian
name: Weiss, Vinicius
name: Tadra-Sfeir, Michelle
name: Cardoso, Rodrigo
name: Balsanelli, Eduardo
name: Liziane Brusamarello-Santos
name: Doumit Camilios-Neto
name: Cruz, Leonardo
name: Raittz, Roberto
name: Marques, Ana
name: LiPuma, John
name: Fadel-Picheth, Cyntia
name: Souza, Emanuel
name: Pedrosa, Fabio
Publisher: name: figshare
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Evolutionary Biology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Table S2. Best-blast hits of AU13965 plasmid-encoded proteins. (DOCX 93 kb)
Sub-second variability in black-hole X-ray binary jets
Creators: name: Vincentelli, Federico M.
name: Casella, Piergiorgio
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In the last 10 years multi-wavelength fast variability studies of low mass X-ray binaries have shown a dramatic development. A key discovery was the detection of O-IR sub-second fluctuations in two black-hole transients, lagging the X-rays by $\approx$0.1 s. This demonstrated how the fluctuations observed in the inflow could be transferred to the jet, allowing therefore also to study in a completely new way the physical processes which take place at the base of the jet. In this paper we review the latest developments of the study of jets with this new approach, focusing on the results obtained with cross-spectral analysis techniques.
description: Conference proceeding article of the XMM-Newton Workshop 2018, "Time-Domain Astronomy: A High Energy View". Accepted for publication in Astronomische Nachrichten. 4 pages, 1 figure
Additional file 4: of Genome comparison between clinical and environmental strains of Herbaspirillum seropedicae reveals a potential new emerging bacterium adapted to human hosts
Creators: name: Helisson Faoro
name: Oliveira, Willian
name: Weiss, Vinicius
name: Tadra-Sfeir, Michelle
name: Cardoso, Rodrigo
name: Balsanelli, Eduardo
name: Liziane Brusamarello-Santos
name: Doumit Camilios-Neto
name: Cruz, Leonardo
name: Raittz, Roberto
name: Marques, Ana
name: LiPuma, John
name: Fadel-Picheth, Cyntia
name: Souza, Emanuel
name: Pedrosa, Fabio
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Biotechnology
subject: Evolutionary Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Figure S2. Identification of the non-ribosomal peptide synthetase (NRPS) cluster in H. seropedicae strains. Sequences of the NRPS cluster proteins encoded in each genome were identified based on the sequences of SmR1 proteins. The retrieved sequences were analyzed by PRISM for annotation and identification of functional domains. Adenylation domains are: OHBu: 3-hydroxybutanoic acid; Asp: Aspartate; Ser: Serine; Thr: Threonine; OHOm: N5-hydroxyornithine. Other biosynthetic domains are: TE: Thioesterase; PPTase: Phosphopantetheinyltransferase; T: Thiolation C: condensation; E: Epimerization. (DOCX 377 kb)
Ferromagnetic superconductivity driven by changing Fermi surface topology
Creators: name: Sandeman, K. G.
name: Lonzarich, G. G.
name: Schofield, A. J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We introduce a simple but powerful zero temperature Stoner model to explain the unusual phase diagram of the ferromagnetic superconductor, UGe2. Triplet superconductivity is driven in the ferromagnetic phase by tuning the majority spin Fermi level through one of two peaks in the paramagnetic density of states (DOS). Each peak is associated with a metamagnetic jump in magnetisation. The twin peak DOS may be derived from a tight-binding, quasi-one-dimensional bandstructure, inspired by previous bandstructure calculations.
description: 9 pages, 9 figures, REVTeX 4. Version 2: updated references and corrected typos
QO`SHMA GAPLARNING LISONIY PRAGMATIK TAHLILI
Creators: name: Qurbonova, O'g'iloy
Publisher: name: Zenodo
Year: 2024

description: Mazkur tezisdа qо`shmа gаplаr tаhlіl еtіlаdі, bundа gаplаrnіng strukturаl-sеmаntіk, kоmmunіkаtіv, prаgmаtіk, stіlіstіk tаvsіfі bаyоn еtіlаdі.
Additional file 1: of Implementation fidelity of provider-initiated HIV testing and counseling of tuberculosis patients under the National Tuberculosis Control Program in Kathmandu District of Nepal: an implementation research
Creators: name: Randeep Kumar
name: Probandari, Ari
name: Biwesh Ojha
name: Ashmin Bhattarai
name: Yanri Subronto
Publisher: name: figshare
Year: 2019
Subjects: subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Data extraction tool. (DOCX 14 kb)
New hairy black holes with negative cosmological constant
Creators: name: van der Bij, J. J.
name: Radu, Eugen
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Black hole solutions with nonspherical event horizon topology are shown to exist in an Einstein-Yang-Mills theory with negative cosmological constant. The main characteristics of the solutions are presented and differences with respect to the spherically symmetric case are studied. The stability of these configurations is also addressed.
description: 14 pages, 6 Encapsulated PostScript figures, references added
Cosmology in scalar tensor theory and asymptotically de-Sitter Universe
Creators: name: Sen, A. A.
name: Sen, S.
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We have investigated the cosmological scenarios with a four dimensional effective action which is connected with multidimensional, supergravity and string theories. The solution for the scale factor is such that initially universe undergoes a decelerated expansion but in late times it enters into the accelerated expansion phase. Infact, it asymptotically becomes a de-Sitter universe. The dilaton field in our model is a decreasing function of time and it becomes a constant in late time resulting the exit from the scalar tensor theory to the standard Einstein's gravity. Also the dilaton field results the existence of a positive cosmological constant in late times.
description: 7 pages, Revtex Style, 6 Postscript figures
High-Energy Neutrinos from Blazar Flares and Implications of TXS 0506+056
Creators: name: Oikonomou, Foteini
name: Murase, Kohta
name: Petropoulou, Maria
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Motivated by the observation of a $>290$ TeV muon neutrino by IceCube, coincident with a $\sim$6 month-long $γ$-ray flare of the blazar TXS 0506+056, and an archival search which revealed $13 \pm 5$ further, lower-energy neutrinos in the direction of the source in 2014-2015, we discuss the likely contribution of blazars to the diffuse high-energy neutrino intensity, the implications for neutrino emission from TXS 0506+056 based on multi-wavelength observations of the source, and a multi-zone model that allows for sufficient neutrino emission so as to reconcile the multi-wavelength cascade constraints with the neutrino emission seen by IceCube in the direction of TXS 0506+056.
description: 7 pages, 4 figures, conference proceedings of UHECR 2018
Clarifying the Associations between Psychopathy and Attachment in Adult Non-Institutionalised Samples
Creators: name: Christian, Elliott
Publisher: name: The Australian National University
Year: 2017
Subjects: Psychopathy
Attachment

description: Psychopathy is a personality construct characterised by a range of destructive and disruptive interpersonal behaviours, however, there is limited information regarding how this construct relates to behaviour within intimate social relationships. One theory which could be useful in understanding not only the interpersonal processes of psychopathy, but potentially its etiology, is attachment theory. While a small literature regarding the association between psychopathy and attachment has been developed in recent years, there have been a number of discrepancies between studies and a number of areas of attachment theory left unexplored. Across a series of studies we investigated the associations between psychopathy and general attachment styles, attachment styles in specific normative relationships (e.g., mother, father, romantic partner and friends), and the actual presence of attachment bonds in large, adult, non-institutionalised samples using self-report measures. In our results, we demonstrated that there are consistent associations between individual differences in attachment styles and psychopathy, which tend to differ depending on the attachment dimension, component of psychopathy or specific attachment relationship under consideration. We also found deficits in the presence of attachment bonds associated with psychopathy, as indicated by reports of less attachment behaviour within one’s intimate social network, smaller intimate social network size and differences in social network composition. While this finding is consistent with theoretical descriptions of psychopathy, the effect sizes were small. Overall, our results are supportive of the application of attachment theory to understand the interpersonal processes of psychopathy and provide preliminary support for further consideration of attachment theory in psychopathy’s etiology. Given that we only found limited deficits regarding the capacity to form an attachment bond, taken together, our results suggest that it may be more important to examine the quality of bonds formed in psychopathic individuals rather than the mere presence or absence of bonds.
Representing braids by automorphisms
Creators: name: Shpilrain, Vladimir
Publisher: name: arXiv
Year: 2002
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 20F36; 57M05

description: Based on a normal form for braid group elements suggested by Dehornoy, we prove several representations of braid groups by automorphisms of a free group to be faithful. This includes a simple proof of the standard Artin's representation being faithful.
description: 6 pages
Fabry-Pérot Huygens' Metasurfaces: On Homogenization of Electrically Thick Composites
Creators: name: Marcus, Sherman W.
name: Epstein, Ariel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Realization of the anomalous refraction effects predicted by Huygens' metasurfaces (HMS) have required tedious and time-consuming trial-and-error numerical full-wave computations. It is shown herein that these requirements can be alleviated for transverse magnetic (TM) propagation by a periodic dielectric-based HMS consisting of an electrically thick array of cascaded Fabry-Pérot etalons. This "Fabry-Pérot HMS" (FP-HMS) is easily designed to mimic the local scattering coefficients of a standard zero-thickness HMS (ZT-HMS) which, according to homogenization theory, should result in the desired anomalous refraction. To probe the characteristics of this practical FP-HMS, a method based on Floquet-Bloch (FB) analysis is derived for predicting the fields scattered from it for arbitrary angles of incidence. This method produces simple closed-form solutions for the FB wave amplitudes and the resulting fields are shown to agree well with full-wave simulations. These predictions and full-wave simulations verify the applicability of homogenization and scattering properties of zero-thickness HMS's to thick structures. They also verify the proposed semi-analytical microscopic design procedure for such structures, offering an effective alternative path to implementation of theoretically envisioned intricate field manipulating devices.
description: 17 pages, 11 figures
Applied epidemiology of vaccine-preventable diseases in the Asia-Pacific
Creators: name: Lai, Jana Yun Reng
Publisher: name: The Australian National University
Year: 2017
Subjects: Vaccine-preventable disease
Laos PDR
pneumococcal conjugate vaccine
Kiribati
intussusception
rotavirus vaccine
Haemophilus influenzae type b
vaccination evidence
serology
poliovirus
circulating vaccine-derived poliovirus

description: From 2015-2016 I undertook the Master of Philosophy in Applied Epidemiology (MAE) whilst under the employment of the Murdoch Childrens Research Institute (MCRI) in Melbourne as a research officer for a study based in the People’s Democratic Republic of Laos (Lao PDR). To satisfy the requirements of the MAE, I completed projects in the areas of data analysis, public health surveillance, epidemiological research and outbreak investigation. The work I was employed for with MCRI formed the basis of my data analysis competency. The aim of this project was to determine the pneumococcal conjugate vaccine (PCV) coverage required to achieve herd immunity using pneumococcal carriage surveillance at Mahosot Hospital in Lao PDR. Beyond the analysis of these data, I was responsible for overseeing and coordinating the larger body of work for this project based in Lao PDR. This work is ongoing and a final publication will be published later in 2017. With guidance from my field supervisor, I was responsible for establishing the epidemiology of acute gastroenteritis (AGE) in Kiribati pre- and post-rotavirus (RV) vaccine introduction. As part of this review, I established post-marketing surveillance of intussusception (IS) as part of RV vaccine introduction. The World Health Organization (WHO) recommends the surveillance of IS post-RV vaccine introduction due to experiences with a previous formulation of the vaccine. This evaluation is ongoing and will be completed in 2017. In response to vaccine preventable disease (VPD) outbreaks in Lao PDR, the Ministry of Health, National Immunization Programme (NIP) requested information regarding evidence of serological protection of H. influenzae type b (Hib) in their population. This study was the basis of my epidemiological research for the MAE. The results from this study would provide data on Hib protection in their population to help inform NIP if changes to their current schedule were necessary. For my outbreak investigation competency, I was involved with the team at WHO Lao PDR country office in responding to a circulating vaccine-derived poliovirus type 1 (cVDPV1) outbreak in Lao PDR from October 2015 to mid-2017. As part of this work I will contribute to the outbreak investigation section of the larger WHO report to be submitted to NIP. This thesis presents my experience as a MAE scholar; the skills gained, knowledge learnt and the impact this body of work had on public health in the Asia-Pacific region for VPD. Keywords: Vaccine-preventable disease, Laos PDR, pneumococcal conjugate vaccine, Kiribati, intussusception, rotavirus vaccine, Haemophilus influenzae type b, vaccination evidence, serology, poliovirus, circulating vaccine-derived poliovirus
Eine coleopterologische Excursion auf die Stamser Alpe im Oberinnthale von Tirol
Creators: name: Gredler, Vinc.
Publisher: name: Acta Albertina Ratisbonensia
Year: 2017

description: ...
description: Acta Albertina Ratisbonensia, Bd. 17 (1863): Correspondenzblatt
A cure for unstable numerical evolutions of single black holes: adjusting the standard ADM equations
Creators: name: Kelly, Bernard
name: Laguna, Pablo
name: Lockitch, Keith
name: Pullin, Jorge
name: Schnetter, Erik
name: Shoemaker, Deirdre
name: Tiglio, Manuel
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Numerical codes based on a direct implementation of the standard ADM formulation of Einstein's equations have generally failed to provide long-term stable and convergent evolutions of black hole spacetimes when excision is used to remove the singularities. We show that, for the case of a single black hole in spherical symmetry, it is possible to circumvent these problems by adding to the evolution equations terms involving the constraints, thus adjusting the standard ADM system. We investigate the effect that the choice of the lapse and shift has on the stability properties of numerical simulations and thus on the form of the added constraint term. To facilitate this task, we introduce the concept of quasi well-posedness, a version of well-posedness suitable for ADM-like systems involving second-order spatial derivatives.
description: 20 pages, 9 figures
Implementation of the 8-Nucleon Yakubovsky Formalism for Halo Nucleus 8He
Creators: name: Pouya, Eskandar Ahmadi
name: Rajabi, Ali Akbar
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In order to study the bound-state structure of the Helium halo nuclei, the 8-nucleon Yakubovsky formalism has been implemented for 8He in a 5-body sub-cluster model, i.e. alpha+n+n+n+n. In this case, the 8-nucleon Yakubovsky equations has been obtained in the form of two coupled equations, based on the two independent components. In addition, by removing the contribution interactions of the 8 and 7s bound nucleons in the formalism, the obtained equations explicitly reduce to the 6-nucleon Yakubovsky equations for 6He, in the case of effective 3-body model, i.e. alpha+n+n. In view of the expectation for the dominant structure of 8He, namely an inert alpha-core and four loosely-bound neutrons, Jacobi configurations of the two components in momentum space have been represented to provide technicalities which were considered useful for a numerical performance, such as bound-state calculations and momentum density distributions for halo-bound neutrons.
description: 13 pages, 2 Figures, Original Article, 2019
Transverse kinematics of the Galactic bar-bulge from VVV and Gaia
Creators: name: Sanders, Jason L.
name: Smith, Leigh
name: Evans, N. Wyn
name: Lucas, Philip
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyse the kinematics of the Galactic bar-bulge using proper motions from the ESO public survey Vista Variables in the Via Lactea (VVV) and the second Gaia data release. Gaia has provided some of the first absolute proper motions within the bulge and the near-infrared VVV multi-epoch catalogue complements Gaia in highly-extincted low-latitude regions. We discuss the relative-to-absolute calibration of the VVV proper motions using Gaia. Along lines of sight spanning $-10
description: 20 pages, 19 figures, submitted to MNRAS
A grammar of Momu, a language of Papua New Guinea
Creators: name: Honeyman, Thomas Tout
Publisher: name: The Australian National University
Year: 2016
Subjects: grammar
grammatical description
papua new guinea
sandaun province

description: This thesis is a description of the grammar of Eastern Momu, a language spoken in Papua New Guinea in the north-western province of Sandaun. This is a region with a fair amount of diversity, with several isolates or small language families, and few detailed descriptions. Momu, or Fas as it is more commonly known in the literature, together with the virtually undocumented Baibai language, forms one of these small language families. The thesis is structured such that after a general introduction to the people, language, and region, I give chapters covering: phonology, phonot- actics and morphophonemics (Ch. 2), word classes (Ch. 3), nominals (Ch. 4), noun phrases (Ch. 5), verbs (Ch. 6), aspect (ch. 7), grammatical re- lations (Ch. 8), adverbs (Ch. 9), clauses (Ch. 10), non-verbal predicates (Ch. 11), modality and negation (Ch. 12), serial verb constructions (Ch. 13), compounds and coordination (Ch. 14), subordination (Ch. 15) and complementation (Ch. 16). At first glance, Momu has a relatively uncomplicated five vowel phon- ology, or ten vowels if one includes length. Glides hold a special position within the phonology, phonotactics and morphophonology, as I have ana- lysed it. Glides interact heavily with adjacent segments including metathesis with adjacent consonants in a predictable fashion. Additional phonetic long high vowels arise from some glide-vowel combinations. Amongst the conson- ants, there is a bilabial trill. This is an areal feature that is rare amongst the world’s languages. A marked feature of the verbal system, but also areally, is a relatively high count of verbs coding verbal number. Verbal number in Momu is conservat- ively estimated to occupy 30% of the verbal lexicon, placing it at the upper end of the typological space. The theme of verbal number runs throughout the thesis as its relatively high frequency makes for contrastive behaviour in certain domains. Momu has some classically "Papuan" features such as serial verb con- structions and verb-final ordering (albeit not strictly so). This thesis aims to position Momu within the growing body of work describing the incredible features, number and variety of languages of Papua New Guinea, but also to focus on a region within Papua New Guinea with perhaps a higher degree of diversity and lower total count of documentation overall.
Neutrino Oscillations Induced by Gravitational Recoil Effects
Creators: name: Lambiase, G.
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Quantum gravitational fluctuations of the space-time background, described by virtual D branes, may induce neutrino oscillations if a tiny violation of the Lorentz invariance (or a violation of the equivalence principle) is imposed. In this framework, the oscillation length of massless neutrinos turns out to be proportional to M/E^2, where E is the neutrino energy and M is the mass scale characterizing the topological fluctuations in the vacuum. Such a functional dependence on the energy is the same obtained in the framework of loop quantum gravity.
description: 5 pages, LaTex file
Euxema Baly 1885
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Euxema

description: Euxema Baly, 1885
(Fig. 11)
 Euxema Baly, 1885: 3. Type species: Euxema insignis Baly, 1885 by monotypy.
 Distinguishing characters. Euxema can be separated from other Imatidiini genera by the pronotum having the anterior margin convex and strongly projecting beyond, small and obtuse anterior corners (Fig. 11) and this character is so far unique for Euxema. The genus also possesses prognathous, but not projecting mouthparts, a parallel-sided pronotum, and the serrate lateroapical margins of the elytra. Externally it is most close to Xenispa, and perhaps some species included currently in the latter genus may actually belong to Euxema. However, this requires further study.
 Remarks. BALY (1885) proposed this genus for a single species differing from all other Imatidiini in the anterior margin of the pronotum being strongly protruding anteriad. PIC (1934a), based on this character, placed his new species, elongata, in Euxema. However, it is not congeneric with E. insignis, and is here transferred to a new genus, Katkispa gen. nov. (see description on p. 282).
 Number of species. Monotypic (present paper).
 Biology. Nothing is known about the biology of this genus. According to Champion (BALY 1885), specimens were collected in high montane cloud forest (ca. 1830–2130 m a.s.l.). Euxema insignis resembles several species, here included in Xenispa, living in Panama in the similar habitats situated at lower altitude (ca. 1000–1400 m). All of them are associated with native bamboo of the genus Chusquea (Poaceae). Based on its body shape, E. insignis may also live on Chusquea, however, I was not able to rediscover it in Panama so far.
 Distribution. Colombia: Magdalena (STAINES 2007) and Panama: Chiriquí (BALY 1885).
description: Published as part of Sekerka, Lukáš, 2014, Review of Imatidiini genera (Coleoptera: Chrysomelidae: Cassidinae), pp. 257-314 in Acta Entomologica Musei Nationalis Pragae 54 (1) on page 280, DOI: 10.5281/zenodo.5301732
Anisotropic ultracompact Schwarzschild star by gravitational decoupling
Creators: name: Ovalle, J.
name: Posada, C.
name: Stuchlík, Z.
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We employ the minimal geometric deformation approach to gravitational decoupling (MGD-decoupling) in order to generate an exact anisotropic and non-uniform version of the ultracompact Schwarzschild star, or 'gravastar', proposed by Mazur and Mottola. This new system represents an ultracompact configuration of radius $R_{S}=2\cal{M}$ whose interior metric can be matched smoothly to a conformally deformed Schwarzschild exterior. Remarkably, the model satisfies some of the basic requirements to describe a stable stellar model, such as a positive density everywhere and decreasing monotonously from the centre, as well as a non-uniform and monotonic pressure.
description: 20 pages, 4 figures. arXiv admin note: text overlap with arXiv:1905.10162
Homalispa Baly 1858
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Homalispa

description: Homalispa Baly, 1858
(Fig. 1)
 Homalispa Baly, 1858: 33. Type species: Homalispa batesii Baly, 1858 by original designation.
 Distinguishing characters. Homalispa can be easily distinguished from other genera by the prognathous and projecting mouthparts, and the long antennae which are about 1.5 times longer than the base of the pronotum (Fig. 1). The other two genera, Cyclantispa gen. nov. and Xanthispa, with strongly projecting mouthparts differ in having much shorter antennae, approximately as long as the pronotal base and the pronotum without an emargination above the head and with obtuse and non-projecting anterior corners, while Homalispa has the antennae at least 1.5 times longer than the pronotal base and the pronotum deeply emarginate above the head and with angulate and projecting anterior corners.
 Remarks. MONRÓS & VIANA (1947) designated Homalispa marginata Baly, 1858 as the type species, however, this designation is invalid as the type species was ¿xed in the original description (BALY 1858).
 In the past, Homalispa was divided in two subgenera: the nominotypical subgenus and Xanthispa (i.e. UHMANN 1957a, STAINES 2002). However, in my opinion, Xanthispa is a distinct genus and its status is restored here. In addition, two species previously classi¿ed as Homalispa are transferred to Cyclantispa gen. nov. (see description on page 274).
 Homalispa signata Pic, 1926 is considered as a species of incertae sedis because the holotype deposited in MNHN was damaged by pests and is missing the head and part of the pronotum, thus its assignment to a genus is impossible. PIC (1926b) unfortunately did not mention anything about mouthparts. On the other hand the specimen has a quite broadly explanate and horizontal elytral margin like some small Homalispa species. However, until new material is available its position cannot be veri¿ed.
 Species transferred to other genera. Homalispa collaris Waterhouse, 1881 and H. sulcicollis Champion, 1920 to Xenispa; H. gracilis Baly, 1885 and H. subelongata Pic, 1936 to Cyclantispa gen. nov.; and H. limbifera Baly, 1885 to Pseudimatidium.
 Number of species. 22 (UHMANN 1957a, present paper).
 Key to species. A key to species has yet to be provided.
 Biology. So far, only two Homalispa species have published associations with host plants. Homalispa deyrollei Baly, 1858 was recorded from Poaceae (BONDAR 1938) and H. nevermanni Uhmann, 1930 from Arecaceae (MESKINS et al. 2008). Our ¿eld observations indicate that both associations are correct as we found a number of species on these two plant families (Windsor & Sekerka, unpunbl. data).
 Distribution. Nicaragua to Bolivia and Brazil.
description: Published as part of Sekerka, Lukáš, 2014, Review of Imatidiini genera (Coleoptera: Chrysomelidae: Cassidinae), pp. 257-314 in Acta Entomologica Musei Nationalis Pragae 54 (1) on pages 280-281, DOI: 10.5281/zenodo.5301732
Visual Scene Understanding by Deep Fisher Discriminant Learning
Creators: name: Shahriari, Arash
Publisher: name: The Australian National University
Year: 2017
Subjects: Visual Scene Understanding
Deep Learning
Fisher Discriminant Analysis

description: Modern deep learning has recently revolutionized several fields of classic machine learning and computer vision, such as, scene understanding, natural language processing and machine translation. The substitution of feature hand-crafting with automatic feature learning, provides an excellent opportunity for gaining an in-depth understanding of large-scale data statistics. Deep neural networks generally train models with huge numbers of parameters, facilitating efficient search for optimal and sub-optimal spaces of highly non-convex objective functions. On the other hand, Fisher discriminant analysis has been widely employed to impose class discrepancy, for the sake of segmentation, classification, and recognition tasks. This thesis bridges between contemporary deep learning and classic discriminant analysis, to accommodate some important challenges in visual scene understanding, i.e. semantic segmentation, texture classification, and object recognition. The aim is to accomplish specific tasks in some new high-dimensional spaces, covered by the statistical information of the datasets under study. Inspired by a new formulation of Fisher discriminant analysis, this thesis introduces some novel arrangements of well-known deep learning architectures, to achieve better performances on the targeted missions. The theoretical justifications are based upon a large body of experimental work, and consolidate the contribution of the proposed idea; Deep Fisher Discriminant Learning, to several challenges in visual scene understanding.