cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Vortex phase transformations probed by the local ac response of Bi_{2}Sr_{2}CaCu_{2}O_{8+δ} single crystals with various doping
Creators: name: Ando, Yoichi
name: Nakamura, K.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The linear ac response of the vortex system is measured locally in Bi-2212 single crystals at various doping, using a miniature two-coil mutual-inductance technique. It was found that a step-like change in the local ac response takes place exactly at the first-order transition (FOT) temperature T_{FOT}(H) determined by a global dc magnetization measurement. The T_{FOT}(H) line in the H-T phase diagram becomes steeper with increasing doping. In the higher-field region where the FOT is not observed, the local ac response still shows a broadened but distinct feature, which can be interpreted to mark the growth of a short-range order in the vortex system.
description: 4 pages, including 5 eps figures
Land settlement in South Australia, 1857-1890
Creators: name: Bowes, Keith Russell
Publisher: name: The Australian National University
Year: 1962
Subjects: land settlement
South Australia
land tenure
South Australia History 1850-1891

description: The chief aim of this thesis is to show how South Australian land legislation came to be passed and administered, and why it was reluctant and inadequate until 1868 and thereafter more ready and constructive. The answer to these questions is attempted first, by a survey of the chief geographical, technological and economic factors of settlement (chapters 1-3); second, by an examination of the composition of parliament and of administration in the Department of Crown Lands (Chapter 4); and third, by a study of the political issues that in varying degrees induced the Legislature to accept responsibility for rural producers. (First paragraph of introduction).
Variable line profiles due to non-axisymmetric patterns in an accretion disc around a rotating black hole
Creators: name: Karas, V.
name: Martocchia, A.
name: Subr, L.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have explored spectral line profiles due to spiral patterns in accretion discs around black holes. A parametrization was employed for the shape and emissivity of spiral waves, which can be produced by non-axisymmetric perturbations affecting the disc density and ionization structure. The effects of the light-travel time, energy shift, and gravitational focusing near to a rotating black hole were taken into account. A high-resolution ray-tracing code was used to follow the time variations of the synthetic line profile. A variety of expected spectral features were examined and the scheme applied to a broad iron line observed in MCG-6-30-15.
description: 11 pages (LaTeX), 7 figures (EPS); PASJ accepted
Classical long-range interacting N-particle configurations and its applications
Creators: name: Kokarev, Sergey S.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider classical N-particle system with arbitrary central pair potential. Mechanical equilibrium condition in spherically-symmetric case leads to a nonlinear integro-differential equation for concentration n(r). For special state equation $p=an^γ(1+bn)$, original integro-differential equation transforms into purely integral one. Its solution (under b=0) is written through a row over interaction parameter. Physical conditions for its convergency is discussed. For power-like potential kernal of integral operator is calculated in apparent kind. The cases of Coulomb and harmonic potentials are considered separately up to a third order. General scheme of application of the theory for some astrophysical and cosmological problems is presented. Model system with spherical potential pits is considered. By perturbation theory first virial correction $δn$ is calculated.
description: Latex-2e, 14 pages, talk presented at school-seminar "Theoretical problems of gravity and cosmology", Russia, Ulyanovsk, september 2000. Shortened variant to be published in "Gravitation and Cosmology" 2001
Nuclear reaction studies
Creators: name: Mitchell, Ian Vaughan
Publisher: name: The Australian National University
Year: 1963
Subjects: Nuclear reactions

description: The phenomenon of nuclear photodisintegration was demonstrated first by Chadwick and Goldhaber (Ch 35) who ruptured the nuclear bond between the proton and neutron by irradiating deuterium with the 2.62 MeV Y-rays from a ThCn source. Later, extensive photonuclear studies, chiefly using high energy bremsstrahlung Y-ray beams, established the existence and broad characteristics of the most striking feature of nuclear absorption of electromagnetic radiation, viz. the so-called giant resonance in the absorption cross-section. Although bibliographies (e.g. To 63) and review articles (e.g. St 33, Le 54, Ti 55, Bi 57, De 57, De 59, Wi 59, Le 60, Fu 62, Ha 63) provide detailed summaries of the nuclear photo-effect and the giant resonance exhibited, a brief account of the experimental results and theoretical interpretations will prove useful to introduce the experiments described in Chapters II and III.
O Compromisso com a Ciência Aberta e a Formação de Pesquisadores
Creators: name: Da Silva Costa, Luís Henrique
name: SA, João Mário Lima de
name: Miranda, Joelina Da Silva
name: Veras, Joselia C. Lima
Publisher: name: Periodico Cedigma
Year: 2025
Subjects: CiÊncia
Acesso
Aberto

description: O progresso do conhecimento científico depende de um compromisso coletivo com a transparência, a colaboração e a ampla disseminação de descobertas. Nesse contexto, a Ciência Aberta emerge como um paradigma essencial para democratizar o acesso à informação, permitindo que pesquisadores de diferentes partes do mundo compartilhem seus achados e contribuam para avanços significativos em diversas áreas do saber (Araujo et al., 2021). Essa abordagem não apenas fortalece a credibilidade acadêmica, mas também promove uma sociedade mais bem informada e capacitada para enfrentar desafios contemporâneos (Pinheiro et al., 2014).
Hidden Treasures - Recycling Large-Scale Internet Measurements to Study the Internet's Control Plane
Creators: name: Rüth, Jan
name: Zimmermann, Torsten
name: Hohlfeld, Oliver
Publisher: name: arXiv
Year: 2019
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Internet-wide scans are a common active measurement approach to study the Internet, e.g., studying security properties or protocol adoption. They involve probing large address ranges (IPv4 or parts of IPv6) for specific ports or protocols. Besides their primary use for probing (e.g., studying protocol adoption), we show that - at the same time - they provide valuable insights into the Internet control plane informed by ICMP responses to these probes - a currently unexplored secondary use. We collect one week of ICMP responses (637.50M messages) to several Internet-wide ZMap scans covering multiple TCP and UDP ports as well as DNS-based scans covering > 50% of the domain name space. This perspective enables us to study the Internet's control plane as a by-product of Internet measurements. We receive ICMP messages from ~171M different IPs in roughly 53K different autonomous systems. Additionally, we uncover multiple control plane problems, e.g., we detect a plethora of outdated and misconfigured routers and uncover the presence of large-scale persistent routing loops in IPv4.
description: More information available at https://icmp.netray.io
Multiresolution analysis of electronic structure: semicardinal and wavelet bases
Creators: name: Arias, T. A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This article reviews recent developments in multiresolution analysis which make it a powerful tool for the systematic treatment of the multiple length-scales inherent in the electronic structure of matter. Although the article focuses on electronic structure, the advances described are useful for non-linear problems in the physical sciences in general. The new language and notations introduced are well- suited for both formal manipulations and the development of computer software using higher-level languages such as C++. The discussion is self-contained, and all needed algorithms are specified explicitly in terms of simple operators and illustrated with straightforward diagrams which show the flow of data. Among the reviewed developments is the construction of_exact_ multiresolution representations from extremely limited samples of physical fields in real space. This new and profound result is the critical advance in finally allowing systematic, all electron calculations to compete in efficiency with state-of-the-art electronic structure calculations which depend for their celerity upon freezing the core electronic degrees of freedom. This review presents the theory of wavelets from a physical perspective, provides a unified and self-contained treatment of non-linear couplings and physical operators and introduces a modern framework for effective single-particle theories of quantum mechanics.
description: A "how-to from-scratch" book presently in press at Reviews of Modern Physics: 88 pages, 31 figures, 5 tables, 88 references. Significantly IMPROVED version, including (a) new diagrams illustrating algorithms; (b) careful proof-reading of equations and text; (c) expanded bibliography; (d) cosmetic changes including lists of figures and tables and a more reasonable font. Latest changes (Dec. 11, 1998): a more descriptive abstract, and minor lexicographical changes
Prevalence of radio jets associated with galactic outflows and feedback from quasars
Creators: name: Jarvis, M. E.
name: Harrison, C. M.
name: Thomson, A. P.
name: Circosta, C.
name: Mainieri, V.
name: Alexander, D. M.
name: Edge, A. C.
name: Lansbury, G. B.
name: Molyneux, S. J.
name: Mullaney, J. R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present 1-7 GHz high-resolution radio imaging (VLA and e-MERLIN) and spatially-resolved ionized gas kinematics for ten z<0.2 type~2 `obscured' quasars (log [L(AGN)/(erg/s)]>~45) with moderate radio luminosities (log [L(1.4GHz)/(W/Hz)]=23.3-24.4). These targets were selected to have known ionized outflows based on broad [OIII] emission-line components (FWHM~800-1800 km/s). Although `radio-quiet' and not `radio AGN' by many traditional criteria, we show that for nine of the targets, star formation likely accounts for
description: Accepted for publication in MNRAS. Main manuscript is 22 pages with 12 figures. Supplementary material is available for download under "Ancillary files" or by downloading the source file listed under "Other formats"
Additional file 1 of Application of a novel hybrid algorithm of Bayesian network in the study of hyperlipidemia related factors: a cross-sectional study
Creators: name: Wang, Xuchun
name: Pan, Jinhua
name: Ren, Zeping
name: Zhai, Mengmeng
name: Zhang, Zhuang
name: Ren, Hao
name: Song, Weimei
name: He, Yuling
name: Li, Chenglian
name: Yang, Xiaojuan
name: Li, Meichen
name: Quan, Dichen
name: Chen, Limin
name: Qiu, Lixia
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified

description: Additional file 1. Data sources and definitions.
Fluctuation Exchange Analysis of Superconductivity in the Standard Three-Band CuO2 Model
Creators: name: Esirgen, G.
name: Bickers, N. E.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The fluctuation exchange, or FLEX, approximation for interacting electrons is applied to study instabilities in the standard three-band model for CuO2 layers in the high-temperature superconductors. Both intra-orbital and near-neigbor Coulomb interactions are retained. The filling dependence of the d(x2-y2) transition temperature is studied in both the "hole-doped" and "electron-doped" regimes using parameters derived from constrained-occupancy density-functional theory for La2CuO4. The agreement with experiment on the overdoped hole side of the phase diagram is remarkably good, i.e., transitions emerge in the 40 K range with no free parameters. In addition the importance of the "orbital antiferromagnetic," or flux phase, charge density channel is emphasized for an understanding of the underdoped regime.
description: REVTex and PostScript, 31 pages, 26 figures; to appear in Phys. Rev. B (1998); only revised EPS figures 3, 4, 6a, 6b, 6c, 7 and 8 to correct disappearance of some labels due to technical problems
A study of photoproton reactions in heavy nuclei
Creators: name: Taylor, Raymond Booth
Publisher: name: The Australian National University
Year: 1961
Subjects: Photonuclear reactions
Protons

description: In 1934 Chadwick and Goldhaber (Ch35) disintegrated the deuteron using the 2.6 MeV gamma rays from ThC". This was 9 followed by the disintegration of Be by Szilard and Chalmers (3z34). The early work was limited to using gamma rays from naturally occurring radioactive sources and it was not until high energy electron accelerators were developed that it became possible to investigate the systematics of nuclear photodisintegrations. The problem of accurately determining photonuclear cross sections is complicated by the use of bremsstrahlung radiation which makes the data much more difficult to interpret than the data obtained using monochromatic gamma rays. However, recent improvements in the energy stability of electron accelerators, now reported as low as 5 keV (Go54), together with better knowledge of the bremsstrahlung spectrum, have made it possible to measure photonuclear cross sections with greater accuracy. Also the problem of producing a monochromatic variable energy Y-ray is being investigated (Mi59) and the results are encouraging. A recent measurement (Se60) produced cross sections which were very similar to other results obtained by using the conventional bremsstrahlung radiation. With the advent of suitable monochromatic gamma rays it will be possible to make a detailed investigation of the region above the giant resonance, where at present any resonance structure is masked by the yield from the giant resonance. The theoretical. approach to nuclear photodisintegration has been analogous to that of the atomic photoeffect and it has been possible to explain the main features (of the nuclear photoeffect) by using non-relativistic wave functions. Although it has been realised that meson fields must play a part in the explanations, Siegert (Si37) has shown that they can be ignored in the giant resonance. At high energies it is no longer possible to use nonrelativistic wave functions and here a different approach must be made to the problem. So far the theoretical predictions have been limited to the gross features, such as the position of the giant resonance, its width, magnitude and, in the case of deformed nuclei, the splitting of the giant resonance. The remainder of this chapter gives a brief outline of the present state of photodisintegration theory and how it fits the experimental facts. The discussion deals mainly with the medium and heavy nuclei and with photon energies below the meson threshold.
The general scalar-tensor Hamiltonian with deformed covariance
Creators: name: Cuttell, Rhiannon
name: Sakellariadou, Mairi
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We derive the scalar-tensor Hamiltonian constraint to all orders of momenta when the canonical constraint algebra is deformed by a phase space function as predicted by some studies into loop quantum cosmology. We find that the momenta and spatial derivatives from gravity and matter fields must combine in a very specific form to maintain a deformed general covariance. This suggests that the deformation should be equally caused by matter field derivatives as it is by gravitational curvature. We demonstrate the cosmological consequences of a variety of deformation functions. Some cause a big bounce at high energy densities and others cause a sudden singularity.
description: 26 pages, 3 figures
Coalescence of surfactant-laden drops by Phase Field Method
Creators: name: Soligo, Giovanni
name: Roccon, Alessio
name: Soldati, Alfredo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In this work, we propose and test the validity of a modified Phase Field Method (PFM), which was specifically developed for large scale simulations of turbulent flows with large and deformable surfactant-laden droplets. The time evolution of the phase field, ϕ, and of the surfactant concentration field, ψ, are obtained from two Cahn-Hilliard-like equations together with a two-order-parameter Time-Dependent Ginzburg-Landau (TDGL) free energy functional. The modifications introduced circumvent existing limitations of current approaches based on PFM and improve the well-posedness of the model. The effect of surfactant on surface tension is modeled via an Equation Of State (EOS), further improving the flexibility of the approach. This method can efficiently handle topological changes, i.e. breakup and coalescence, and describe adsorption/desorption of surfactant. The capabilities of the proposed approach are tested in this paper against previous experimental results on the effects of surfactant on the deformation of a single droplet and on the interactions between two droplets. Finally, to appreciate the performances of the model on a large scale complex simulation, a qualitative analysis of the behavior of surfactant-laden droplets in a turbulent channel flow is presented and discussed.
A study of the charged particles emitted from certain fast-neutron induced reactions
Creators: name: Purser, Kenneth Harry
Publisher: name: The Australian National University
Year: 1961
Subjects: Nuclear reactions
Fast neutrons
Particles (Nuclear physics)

description: The models which have been used to explain the observed features of nuclear reactions have had a chequered history of waxing and waning popularity. Nearly three decades ago it was suggested that single particle direct interactions might prove a satisfactory basis for a model of nuclear reactions; however, the theory was discarded when the discovery of narrow resonance structure in reaction cross-sections forced the adoption of the compound nucleus model. Over the years, this compound nucleus model has played an important part in predicting the details of reactions going through discrete states and has been extended to include the cases where the compound nucleus has available a statistically large number of overlapping levels. Notwithstanding the successes of the compound nucleus model, direct interaction theory had a revival early in the last decade when examinations of the details of many reactions showed features which were foreign to the decay of compound nuclei. These investigations, which gave widespread support to the theory of direct interactions, raised many doubts about the usefulness of the statistical model and caused extensive discrediting of this part of compound nucleus theory. Today, however, it appears likely that the two models are reconcilable and can exist side by side. It has been suggested that direct interactions and evaporation processes can be simultaneously present in many nuclear reactions and are extreme models for the fast and slow components of nuclear interactions. (First two paragraphs of introduction.)
title: Approaches to infant weaning and the issues caregivers face: a rapid review
Creators: name: Prescott, Amy
Publisher: name: Norland College, York Place, London Road, Bath BA1 6AE, UK
Year: 2024

description: The World Health Organization’s global advice is that infants should be exclusively breastfed for six months and beyond with complementary feeding until two years old. The literature and guidelines on weaning (academic and popular) are vast and contradictory. The primary aim of this review is to examine the current scientific literature about infant complementary feeding. As such, the research questions were: (1) what are the key approaches to weaning and complementary feeding, and (2) what are the key issues or influences for caregivers when deciding how to wean their child? During August 2021, six databases were systematically searched for both qualitative and quantitative studies related to weaning. Thirty-three academic studies met the inclusion criteria. Thematic analysis of scientific evidence revealed an overarching theme of practitioner/expert perspective versus caregiver perspective. Five key themes were identified: weaning style – benefits and risks; guidance and advice; optimal time for weaning; influence of solid-food introduction on growth; and sociodemographic influences. Overall, other approaches to weaning include spoon-feeding, baby-led weaning, or a combination of the two.
Deep Learning for Galaxy Mergers in the Galaxy Main Sequence
Creators: name: Pearson, William J.
name: Wang, Lingyu
name: Trayford, James
name: Petrillo, Carlo E.
name: van der Tak, Floris F. S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Starburst galaxies are often found to be the result of galaxy mergers. As a result, galaxy mergers are often believed to lie above the galaxy main sequence: the tight correlation between stellar mass and star formation rate. Here, we aim to test this claim. Deep learning techniques are applied to images from the Sloan Digital Sky Survey to provide visual-like classifications for over 340 000 objects between redshifts of 0.005 and 0.1. The aim of this classification is to split the galaxy population into merger and non-merger systems and we are currently achieving an accuracy of 91.5%. Stellar masses and star formation rates are also estimated using panchromatic data for the entire galaxy population. With these preliminary data, the mergers are placed onto the full galaxy main sequence, where we find that merging systems lie across the entire star formation rate - stellar mass plane.
description: 4 pages, 1 figure. For Proceedings IAU Symposium No. 341
Magnetic tension and the geometry of the universe
Creators: name: Tsagas, Christos G.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The vector nature of magnetic fields and the geometrical interpretation of gravity introduced by general relativity, guarantee a special coupling between magnetism and spacetime curvature. This magneto-geometrical interaction effectively transfers the tension properties of the field into the spacetime fabric, triggering a variety of effects with profound implications. Given the ubiquity of magnetic fields in the universe, these effects could prove critical. We discuss the nature of the magneto-curvature coupling and illustrate some of its potential implications for cosmology.
description: Minor changes. To appear in Phys. Rev. Lett
Studies in photonuclear reactions
Creators: name: Sherwood, Trevor Raymond
Publisher: name: The Australian National University
Year: 1962
Subjects: Photonuclear reactions

description: Progress in the theory of photonuclear reactions has been achieved principally through the extensive use of reaction models. These models have been the basis for obtaining theoretical estimates of the broad features of photon induced reactions. In medium- and heavy-weight nuclei, the predicted position, width and magnitude of the 'giant* resonance are generally in agreement with the experimentally determined values. The use of different models and even modifications of the same model however can lead to marked differences when the prediction of more detailed features is made. In particular, measurements of the energy spectra of emitted particles, the relative yield of different types of particle and the investigations of any 'structure' in the activation function should help to distinguish the more successful models. These measurements have not been made with sufficient accuracy to allow a critical assessment of the different models. However, for interactions involving discrete levels in light nuclei, shell model calculations are needed to establish the level properties before a useful comparison with experimental results can be made.
IgG4-related disease in patients with newly diagnosed idiopathic retroperitoneal fibrosis: a population-based Danish study
Creators: name: N Lomborg
name: M Jakobsen
name: CS Bode
name: P Junker
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Objectives: IgG4-related disease (IgG4-RD) may present as ‘idiopathic’ retroperitoneal fibrosis (IRPF). We aimed to determine the occurrence of IgG4-retroperitoneal fibrosis (IgG4-RPF) in a nationwide study on patients with newly diagnosed IRPF, and to compare histopathological, imaging, and clinical features in the IgG4-RPF and non-IgG4-RPF subsets. Method: The National Danish Pathology Register was searched for biopsy codes relating to retroperitoneal tissue from 1 January 2004 to 31 December 2013. Secondary causes of RPF were excluded. Among 724 candidate cases, 68 were identified with IRPF. Clinical, laboratory, and imaging recordings were reviewed, and tissue blocks were scrutinized for IgG4-RPF features according to international consensus. Results: Forty-two patients (28 males), median age 56 (25–74) years were included. Nineteen (45%) met the criteria for IgG4-RPF, seven with definite and 12 with possible IgG4-RPF, while 23 had non-IgG4-RPF. Local manifestations and laboratory measures did not differ between RPF subsets. Arterial hypertension (p = 0.037) and periaortic fibrosis (p = 0.024) were more common in IgG4-RPF vs non-IgG4-RPF. Plasma cell IgG4/total IgG ratios ≥ 40% were associated more with core histopathological features of IgG4-RD compared to ratios Conclusion: Forty-five per cent of this nationwide study population with newly diagnosed IRPF could be reclassified with IgG4-RPF. The association between high numbers of IgG4-bearing plasma cells and histopathological features of IgG4-RPF supports IgG4-bearing plasma cells with a perturbed distribution between IgG4 and total IgG being implicated in the pathogenesis of IgG4-RPF.
The intermittent behavior and hierarchical clustering of the cosmic mass field
Creators: name: Feng, Long-Long
name: Pando, Jesus
name: Fang, Li-Zhi
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The hierarchical clustering model of the cosmic mass field is examined in the context of intermittency. We show that the mass field satisfying the correlation hierarchy $ξ_n\simeq Q_n(ξ_2)^{n-1}$ is intermittent if $κ< d$, where $d$ is the dimension of the field, and $κ$ is the power-law index of the non-linear power spectrum in the discrete wavelet transform (DWT) representation. We also find that a field with singular clustering can be described by hierarchical clustering models with scale-dependent coefficients $Q_n$ and that this scale-dependence is completely determined by the intermittent exponent and $κ$. Moreover, the singular exponents of a field can be calculated by the asymptotic behavior of $Q_n$ when $n$ is large. Applying this result to the transmitted flux of HS1700 Ly$α$ forests, we find that the underlying mass field of the Ly$α$ forests is significantly intermittent. On physical scales less than about 2.0 h$^{-1}$ Mpc, the observed intermittent behavior is qualitatively different from the prediction of the hierarchical clustering with constant $Q_n$. The observations, however, do show the existence of an asymptotic value for the singular exponents. Therefore, the mass field can be described by the hierarchical clustering model with scale-dependent $Q_n$. The singular exponent indicates that the cosmic mass field at redshift $\sim 2$ is weakly singular at least on physical scales as small as 10 h$^{-1}$ kpc.
description: AAS Latex file, 33 pages,5 figures included, accepted for publication in ApJ
Non-resonant radiation from N14(p,γ)015
Creators: name: Bailey, Grahame Malcolm
Publisher: name: The Australian National University
Year: 1963
Subjects: nuclear reactions
protons
stars radiation

description: The work described in this thesis is concerned with an investigation of non-resonant radiation from the N14(p,Y)015 reaction. These results, together with a theoretical model, have been used to extrapolated the reaction cross-section to stellar energies. The investigation was undertaken jointly by the author and Dr. D.F. Hebbard who was responsible for suggesting the project. The work has been carried out entirely in the Department of Nuclear Physics at the Australian National University and covers the period September 1960 to May 1963. The author claims to have taken an active part in all aspects of the investigation reported. (First two paragraphs of preface.)
A Shock-Optimized SECE Integrated Circuit
Creators: name: Morel, Adrien
name: Quelen, Anthony
name: Gasnier, Pierre
name: Grézaud, Romain
name: Monfray, Stéphane
name: Badel, Adrien
name: Pillonnet, Gaël
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: This paper presents a fully integrated, self-starting shock-optimized Synchronous Electric Charge Extraction (SECE) interface for piezoelectric harvesters (PEHs). After introducing a model of the electromechanical system under shocks, we prove that the SECE is the most appropriate electrical interface to maximize the harvested energy from our PEH. The proposed interface is then presented, both at system-and transistor-levels. Thanks to a dedicated sequencing, its quiescent current is as low as 30nA. This makes the proposed interface efficient even under time-spaced shocks occurring at sporadic and unpredictable rates. The circuit is for instance able to maintain its self-powered operation while harvesting very small shocks of 8uJ happening every 100 seconds. Our chip was fabricated in CMOS 40nm technology, and occupies a 0.55mm^2 core area. The measured maximum electrical efficiency under shocks reaches 91%. Under shocks, the harvested energy by the proposed shock-optimized SECE interface is 4.2 times higher than using a standard energy harvesting circuit, leading to the best shock FoM among prior art.
Dynamical Monte Carlo Study of Equilibrium Polymers : Static Properties
Creators: name: Wittmer, J. P.
name: Milchev, A.
name: Cates, M. E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report results of extensive Dynamical Monte Carlo investigations on self-assembled Equilibrium Polymers (EP) without loops in good solvent. (This is thought to provide a good model of giant surfactant micelles.) Using a novel algorithm we are able to describe efficiently both static and dynamic properties of systems in which the mean chain length $\Lav$ is effectively comparable to that of laboratory experiments (up to 5000 monomers, even at high polymer densities). We sample up to scission energies of $E/k_BT=15$ over nearly three orders of magnitude in monomer density $ϕ$, and present a detailed crossover study ranging from swollen EP chains in the dilute regime up to dense molten systems. Confirming recent theoretical predictions, the mean-chain length is found to scale as $\Lav \propto ϕ^α\exp(δE)$ where the exponents approach $α_d=δ_d=1/(1+γ) \approx 0.46$ and $α_s = 1/2 [1+(γ-1)/(νd -1)] \approx 0.6, δ_s=1/2$ in the dilute and semidilute limits respectively. The chain length distribution is qualitatively well described in the dilute limit by the Schulz-Zimm distribution $\cN(s)\approx s^{γ-1} \exp(-s)$ where the scaling variable is $s=γL/\Lav$. The very large size of these simulations allows also an accurate determination of the self-avoiding walk susceptibility exponent $γ\approx 1.165 \pm 0.01$. ....... Finite-size effects are discussed in detail.
description: 15 pages, 14 figures, LATEX
Opsiphanes bogotanus Distant 1875
Creators: name: Piovesan, Mônica
name: Casagrande, Mirna Martins
name: Mielke, Olaf Hermann Hendrik
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Nymphalidae
Opsiphanes
Opsiphanes bogotanus

description: Opsiphanes bogotanus Distant, 1875
(Figs 4–19)
 Diagnosis. Opsiphanes bogotanus differs from Opsiphanes cassiae, a closely related species, in having the VHW with a rounded eyespot between Sc+R 1 and M 1 that usually reaches or exceeds M 1, and a dark-brown band extends from the base of the wing to this eyespot. It differs from Opsiphanes mexicana stat. nov., another closely related species, in having the DFW oblique band with an uneven distal margin, and the portion of this band on CuA 2 -2A is generally narrower (Fig. 4a). Molecular analyses recovered Opsiphanes bogotanus as closely related to Opsiphanes cassiae and Opsiphanes mexicana stat. nov. (Fig. 2) (genetic distance 1.6–2.7% and 1.5–1.7%, respectively).
 Male genitalia. Tegumen in dorsal view with the anterior margin wider than the posterior; anterior projection of saccus in lateral view twice as long as dorsal arms of saccus, in ventral view with a dilated anterior region; valva in dorsal view with convergingly curved posterior portions (Fig. 11).
 Female genitalia. Lamella antevaginalis membranous medially and sclerotized laterally; lamella postvaginalis rounded medially, with this portion the same size as the ostium; ostium with weaker sclerotization than lamella ante and postvaginalis (Fig. 12).
 Variation. Subspecies vary in the following characters: DFW, the length, width and color of the oblique band. DHW, the marginal band faint to absent in males, and well marked in females. HW, the crenulation of the outer margin. VFW, the width and color of the oblique band, in females, the portion of this band on CuA 2 -2A tends to be more yellowish; and the EIII submarginal line may or may not reach CuA 2. VHW, the size of the eyespot between Sc+R 1 and M 1, and the width of its dark-brown ring; and the shape of the eyespot between M 3 and CuA 2 (Figs 4–10).
description: Published as part of Piovesan, Mônica, Casagrande, Mirna Martins & Mielke, Olaf Hermann Hendrik, 2022, Systematics of Opsiphanes Doubleday, [1849] (Lepidoptera: Nymphalidae, Satyrinae, Brassolini): an integrative approach, pp. 1-278 in Zootaxa 5216 (1) on pages 18-19, DOI: 10.11646/zootaxa.5216.1.1, http://zenodo.org/record/7403532
The level structure of some light nuclei
Creators: name: Earwaker, Lyndsay Gordon
Publisher: name: The Australian National University
Year: 1963
Subjects: Energy levels (Quantum mechanics)
Nuclear reactions

description: One of the major fields of research in nuclear physics is the accumulation of experimental data on the properties of energy levels in the various light nuclei. In general, the most useful information that can be obtained iw whether or not an evergy level exists, its excitation energy, its width, its total angular momentum or spin, its relative probability of different modes of decay and its isobaric spin admixtures. Such information should be useful in acquiring furhter understanding of nuclear forces and nuclear structure. The research reported in this thesis is a part of this systematic search for and classification of nuclear energy level, Five separate experiments have been carried out and ddata has been collected on part of the level strucutre of the nuclei B9, C10, C11, N14, o15 and Ne20. (First two paragraphs of introduction).
Pulsar Radio Emission Mechanism: Radio Nanoshots as a Low Frequency Afterglow of Relativistic Magnetic Reconnection
Creators: name: Philippov, Alexander
name: Uzdensky, Dmitri A.
name: Spitkovsky, Anatoly
name: Cerutti, Benoît
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this Letter we propose that coherent radio emission of Crab, other young energetic pulsars, and millisecond pulsars is produced in the magnetospheric current sheet beyond the light cylinder. We carry out global and local two-dimensional kinetic plasma simulations of reconnection to illustrate the coherent emission mechanism. Reconnection in the current sheet beyond the light cylinder proceeds in the very efficient plasmoid-dominated regime, and current layer gets fragmented into a dynamic chain of plasmoids which undergo successive coalescence. Mergers of sufficiently large plasmoids produce secondary perpendicular current sheets, which are also plasmoid-unstable. Collisions of plasmoids with each other and with the upstream magnetic field eject fast-magnetosonic waves, which propagate upstream across the background field and successfully escape from the plasma as electromagnetic waves that fall in the radio band. This model successfully explains many important features of the observed radio emission from Crab and other pulsars with high magnetic field at the light cylinder: phase coincidence with the high-energy emission, nano-second duration (nanoshots), and extreme instantaneous brightness of individual pulses.
description: 7 pages, 4 figures
Additional file 2 of Differential RNA packaging into small extracellular vesicles by neurons and astrocytes
Creators: name: Luo, Xuan
name: Jean-Toussaint, Renée
name: Sacan, Ahmet
name: Ajit, Seena K.
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology

description: Additional file 1. Supplementary figures. Figure S1. Total protein level and original blots. Figure S2. Integrity and quality of RNA derived from neurons, astrocytes and their respective sEVs. Figure S3. Treemap representations of differentially expressed genes in neurons vs. astrocytes.
A decade of change in the Goroka Valley, New Guinea : land use and development in the 1950's
Creators: name: Howlett, Diana R.
Publisher: name: The Australian National University
Year: 1962
Subjects: subject: Goroka Valley
subject: New Guinea
subject: land use
subject: development
subject: Land use
subject: Ethnology

description: The aim of this research has been to make a study of the social geography of the Goroka Valley, with particular reference to the developments of the period 1950-60. During this period, with the opening of the Valley to European settlement, many profound changes have taken place in the Valley. The traditional pattern of native life has been broadened - many clans now operate on a semi-commercial basis, and with the establishment of schools and local government councils social and political changes are contributing to the emergence of a new order. The European community has steadily increased in size, and has been responsible for the development of coffee plantations, the growth of a township with a population of almost 500, the construction of roads and airfields, the establishment of light industries, and the extension of social services. The intention here has been to produce a regional study of the Goroka Valley - to this end the physical environment and 'historical' background are described by way of introduction to an examination of the geographically significant events of the 1950s. (First paragraph of preface.)
Field theoretic approach to the counting problem of Hamiltonian cycles of graphs
Creators: name: Higuchi, Saburo
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: A Hamiltonian cycle of a graph is a closed path that visits each site once and only once. I study a field theoretic representation for the number of Hamiltonian cycles for arbitrary graphs. By integrating out quadratic fluctuations around the saddle point, one obtains an estimate for the number which reflects characteristics of graphs well. The accuracy of the estimate is verified by applying it to 2d square lattices with various boundary conditions. This is the first example of extracting meaningful information from the quadratic approximation to the field theory representation.
description: 5 pages, 3 figures, uses epsf.sty. Estimates for the site entropy and the gamma exponent indicated explicitly
Revision of trapeziometacarpal arthroplasty: risk factors, procedures and outcomes
Creators: name: Mattila, Simo
name: Waris, Eero
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology

description: Background and purpose — Revision surgery after trapeziometacarpal arthroplasty is sometimes required. Varying revision rates and outcomes have been reported in rather small patient series. Data on risk factors for revision surgery, on the final outcome of revision, and possible factors affecting the outcome of revision are also limited. We evaluated these factors in 50 patients. Patients and methods — From 1,142 trapeziometacarpal arthroplasties performed during a 10-year period, 50 patients with 65 revision surgeries were retrospectively identified and invited to participate in a follow-up study involving subjective, objective, and radiologic evaluation. The revision rate, risk factors for revision, and factors affecting the outcome of revision were analyzed. Results — The revision rate was 5%. Scaphometacarpal impingement was the most common reason for revision surgery. Patient age ≤ 55 years was a risk factor with a revision rate of 9% in this age group, whereas an operation on both thumbs during the follow-up period was a negative risk factor for revision surgery. There was no difference in revision risk between ligament reconstruction and tendon interposition with or without a bone tunnel. 9 patients had multiple revision procedures and their final outcome did not differ significantly from patients revised only once. Most of the patients felt subjectively that they had benefited from revision surgery and the subjective outcome measures (QuickDash and pain VAS) and the Conolly score were in the same range as previously described for revision trapeziometacarpal arthroplasty. Interpretation — Age ≤ 55 years is a risk factor for revision surgery. The type of primary surgery does not affect the risk of revision surgery and multiple revision procedures do not result in worse outcomes than cases revised only once. Mechanical pain caused by contact between the metacarpal and scaphoid is the most common indication for revision surgery. In general, patients seem to benefit from revision surgery for trapeziometacarpal osteoarthritis.
Long-term evolutions of the cyclotron line energies in Her X-1, Vela X-1 and Cen X-3 as observed with Swift/BAT
Creators: name: Ji, Long
name: Staubert, Ruediger
name: Ducci, Lorenzo
name: Santangelo, Andrea
name: Zhang, Shu
name: Chang, Zhi
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the long-term evolution of the centroid energy of cyclotron lines - often referered to as Cyclotron Resonance Scattering Features (CRSF) - in Her X-1, Vela X-1 and Cen X-3, using survey observations of the Burst Alert Telescope (BAT) onboard Swift. We find a significant decrease of the fundamental CRSF energy in Her X-1 and the first harmonic line energy in Vela X-1, since the launch of Swift in 2004 and until 2010 and 2012, respectively.In both sources the decreases stopped at some time, with a quite stable centroid energy thereafter. Unlike in Her X-1 and Vela X-1, the CRSF energy in Cen X-3 does not show a long-term decrease. It is observed not to change for at least the past 14 years. The long-term variation of the line energy is a direct way to investigate the magnetic field structure in the polar regions of pulsars. Our results may stimulate the development of theoretical models, especially regarding to how the accreted mass accumulates in the accretion mound or how the magnetic field distorts around the polar cap.
description: 11 pages, 5 figures, 3 tables, accepted for publication in MNRAS
A palaeomagnetic study of igneous rocks from eastern Australia, with special reference to rock bodies of Mesozoic age
Creators: name: Robertson, William Archer
Publisher: name: The Australian National University
Year: 1962
Subjects: igneous rocks
Geology, Stratigraphic Mesozoic
Paleomagnetism

description: Scope of the work - Palaeomagnetism is the study of the direction of ancient or 'fossil' magnetization of rocks. If the measured direction in a rock sample is the direction acquired in the earth's magnetic field at the time of formation, defined as the primary (0) direction, and if the age and orientation of the rock is known, the result may be used to study the magnetic field at that time. To do this it is necessary to provide evidence for supposing that the direction obtained is primary, and therefore reflects the earth's magnetic field at the time of formation. A succession of such directions from rocks of increasing age may then be used to show changes in the magnetic field in previous epochs relative to the sampling area. This thesis is mainly concerned with the observation of 'fossilized' magnetization directions in igneous rocks from eastern Australia formed during the Mezozoic Era, and from which the direction of the magnetic field at that time may be inferred: directions from some Tertiary rocks ere also studied for comparison. During these studies it was found necessary to supplement the apparatus existing in the Department of Geophysics with an oven for thermal demagnetization. I constructed de-gaussing coils for this (chapter 2). (First two paragraphs of introduction.)
Molecular dynamics calculation of the thermal conductivity of vitreous silica
Creators: name: Jund, Philippe
name: Jullien, Remi
Publisher: name: arXiv
Year: 1999
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We use extensive classical molecular dynamics simulations to calculate the thermal conductivity of a model silica glass. Apart from the potential parameters, this is done with no other adjustable quantity and the standard equations of heat transport are used directly in the simulation box. The calculations have been done between 10 and 1000 Kelvin and the results are in good agreement with the experimental data at temperatures above 20K. The plateau observed around 10K can be accounted for by correcting our results taking into account finite size effects in a phenomenological way.
description: 5 pages, 3 figures. To appear in Phys. Rev. B