cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Biochemical, pharmacological and histochemical studies on catecholaminergic neurons involved in the central cardiovascular actions of 6-hydroxydopamine and alpha-methyldopa
Creators: name: Mill, Gordon Kelvin.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Signature of the Leggett mode in the A1g Raman response: from MgB2 to iron-based superconductors
Creators: name: Cea, T.
name: Benfatto, L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The Raman response in a superconductor is a powerful probe to investigate the symmetry of the superconducting gap. Here we show that in a multiband superconductor it also offers the unique opportunity to establish if the driving pairing interaction has an intraband or interband character. In the model with one hole and one electron band the full gauge-invariant Raman response, obtained by accounting for the fluctuations of both the density and superconducting phase degrees of freedom, is always dominated by the Leggett mode, regardless its nature. However, while in the case of intra-band dominated pairing the Josephson-like phase fluctuations of the two condensates identify a well-defined peak, as observed in MgB$_2$, for dominant interband pairing the Leggett resonance is pushed at twice the largest gap, resembling apparently a pair-breaking peak. The latter case is in very good agreement with experimental data in iron-based superconductors, suggesting that an interband pairing mechanism should be at play in these systems. These results have also interesting implications for the non-linear optical response probed by means of intense THz fields.
description: Revised version, extended discussion on the analogy with non-linear optics
Three new brown dwarfs and a massive hot Jupiter revealed by TESS around early-type stars
Creators: name: A., Psaridi
name: F., Bouchy
name: M., Lendl
name: N., Grieves
name: G., Stassun K.
name: T., Carmichael
name: S., Gill
name: A., Peña Rojas P.
name: T., Gan
name: A., Shporer
name: A., Bieryla
name: L, Christiansen J.
name: M, Crossfield I. J.
name: M, Galland F. Hooton M. J. Jenkins J.
name: S, Jenkins J.
name: W, Latham D.
name: B, Lund M.
name: E, Rodriguez J.
name: B, Ting E.
name: A, Udry S. Ulmer-Moll S. Wittenmyer R.
name: Y., Yanzhe Zhang
name: G., Zhou
name: B., Addison
name: M., Cointepas
name: A., Collins K.
name: I., Collins K.
name: A., Deline
name: D., Dressing C.
name: P., Evans
name: S., Giacalone
name: A., Heitzmann
name: I., Mireles
name: D., Mounzer
name: J., Otegi
name: J., Radford D.
name: A., Rudat
name: E., Schlieder J.
name: P., Schwarz R.
name: G., Srdoc
name: C., Stockdale
name: O., Suarez
name: J., Wright D.
name: Y, Zhao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The detection and characterization of exoplanets and brown dwarfs (BDs) around massive AF-type stars is essential to investigate and constrain the impact of stellar mass on planet properties. However, such targets are still poorly explored in radial velocity (RV) surveys because they only feature a small number of stellar lines and those are usually broadened and blended by stellar rotation as well as stellar jitter. As a result, the available information about the formation and evolution of planets and BDs around hot stars is limited. We aim to increase the sample and precisely measure the masses and eccentricities of giant planets and BDs transiting AF-type stars detected by the Transiting Exoplanet Survey Satellite (TESS). We followed bright (V < 12 mag) stars with $T_{\mathrm{eff}}$ > 6200 K that host giant companions (R > 7 $\mathrm{R_{\rm \oplus}}$) using ground-based photometric observations as well as high precision RV measurements from the CORALIE, CHIRON, TRES, FEROS, and MINERVA-Australis spectrographs. In the context, we present the discovery of three BD companions, TOI-629b, TOI-1982b, and TOI-2543b, and one massive planet, TOI-1107b. From the joint analysis we find the BDs have masses between 66 and 68 $\mathrm{M_{\rm Jup}}$, periods between 7.54 and 17.17 days, and radii between 0.95 and 1.11 $\mathrm{R_{\rm Jup}}$. The hot Jupiter TOI-1107b has an orbital period of 4.08 days, a radius of 1.30 $\mathrm{R_{\rm Jup}}$, and a mass of 3.35 $\mathrm{M_{\rm Jup}}$. As a by-product of this program, we identified four low-mass eclipsing components (TOI-288b, TOI-446b, TOI-478b, and TOI-764b). Both TOI-1107b and TOI-1982b present an anomalously inflated radius with respect to the age of these systems. TOI-629 is among the hottest stars with a known transiting brown dwarf. TOI-629b and TOI-1982b are among the most eccentric brown dwarfs.
description: 21 pages, 13 figures, Accepted by Astronomy & Astrophysics
African circulation (over 30|p0|sE) and its relation to El-Nino/Southern Oscillation
Creators: name: Mulenga, Henry Mubanga.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Ionization and Dust Charging in Protoplanetary Disks
Creators: name: Ivlev, A. V.
name: Akimkin, V. V.
name: Caselli, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Ionization-recombination balance in dense interstellar and circumstellar environments is a key factor for a variety of important physical processes, such as chemical reactions, dust charging and coagulation, coupling of the gas with magnetic field and development of instabilities in protoplanetary disks. We determine a critical gas density above which the recombination of electrons and ions on the grain surface dominates over the gas-phase recombination. For this regime, we present a self-consistent analytical model which allows us to exactly calculate abundances of charged species in dusty gas, without making assumptions on the grain charge distribution. To demonstrate the importance of the proposed approach, we check whether the conventional approximation of low grain charges is valid for typical protoplanetary disks, and discuss the implications for dust coagulation and development of the "dead zone" in the disk. The presented model is applicable for arbitrary grain-size distributions and, for given dust properties and conditions of the disk, has only one free parameter - the effective mass of the ions, shown to have a low effect on results. The model can be easily included in numerical simulations following the dust evolution in dense molecular clouds and protoplanetary disks.
description: Accepted for publication in ApJ
Barcelona in the face of globalization, how to think of the city through the organization and evaluation of major events?
Creators: name: Ballester, Patrice
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Risk Management (q-fin.RM)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: The event questions men whether it is political, cultural or touristic. It has its own meaning as it starts something while showing a will, a new possibility to create, to meet and to surprise. The event is in fact an "advent that reaches everything" generally integrating itself into a long process or phase of the evolution of societies in terms of its societal structure. However, if the event exists, it is significant and therefore assessable. How to evaluate an Olympic Games or an international exhibition? Can we evaluate the before (from the statement of position, application file), the during (the course of the tourist, cultural or sporting event) and the after (the closing of the festival and its direct and indirect effects on society)? How then to evaluate all the dimensions of the event generally based on major tourist and urban planning operations? We will take as a field of study a city -- capital -- commercial port which has become a sort of archetype in the context of the organization of mega-events with a tourist vocation, such as the Universal or International Exhibitions and the Olympic Games, namely Barcelona and three very important dates for the Catalan capital: 1888, universal exhibition, 1929 universal and international exhibition, 1992 the modern Olympic Games and 2004 the Universal Forum of Cultures of Unesco, international exhibition. The economic interest of organizing an ephemeral giant event is still relevant and will be confirmed in the future with the role of Asian countries within the IOC and the BIE (Bureau international des expositions). The important thing is to develop a rational argument to communicate on the economic merits of the event. Sustainable development and Corporate Social Responsibility (CSR) are predominant elements for ephemeral events that are intended to be sustainable over time for future generations.
description: in French language
A Phonological Sketch of the Kufo Language
Creators: name: Li, Shubo
Publisher: name: The Australian National University
Year: 2022
Subjects: linguistics
African languages
Nilo-Saharan
Kadu
Kadugli-Krongo
Kufo
Kufa
acoustic phonetics
laboratory phonology
vowel length
fortis consonants
lenis consonants
tone

description: The linguistic diversity of East Africa is well-known, but understandings of the languages in some regions, such as the Nuba Mountains of Sudan, remain extremely limited. There are many open questions regarding the linguistic relationships and genetic affiliation of languages in the Nuba Mountains, and there have been few detailed studies of the many typologically interesting features that these languages exhibit, particularly in their sound systems. This Honours project aims to develop the first detailed description of the sound system of Kufo, an endangered Kadu language that is traditionally spoken in the Nuba Mountains in south Kordofan, Sudan. The project draws on approaches of experimental phonetics and language documentation to investigate the consonants, vowels, and tones of Kufo, based on speech data collected with one participant, and analysed using qualitative and quantitative methods. This study contributes to crosslinguistic understandings of phonological typology and to the knowledge of the linguistic structure of East African languages. The study also contributes information that informs current community efforts related to language maintenance.
Preparation and biological characterization of peptides related to human growth hormone
Creators: name: Cross, Bronwyn.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Quasi-periodic oscillations in superfluid, relativistic magnetars with nuclear pasta phases
Creators: name: Passamonti, Andrea
name: Pons, José A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the torsional magneto-elastic oscillations of relativistic superfluid magnetars and explore the effects of a phase transition in the crust-core interface (nuclear pasta) which results in a weaker elastic response. Exploring various models with different extension of nuclear pasta phases, we find that the differences in the oscillation spectrum present in purely elastic modes (weak magnetic field), are smeared out with increasing strength of the magnetic field. For magnetar conditions, the main characteristic and features of models without nuclear pasta are preserved. We find in general two classes of magneto-elastic oscillations which exhibit a different oscillation pattern. For B_p < 4 x 10^{14} G, the spectrum is characterised by the turning points and edges of the continuum which are confined into the star's core, and have no constant phase. Increasing the magnetic field, we find, in addition, several magneto-elastic oscillations which reach the surface and have an angular structure similar to crustal modes. These global magneto-elastic oscillations show a constant phase and become dominant when B_p > 5 x 10^{14} G. We do not find any evidence of fundamental pure crustal modes in the low frequency range (below 200 Hz) for B_p >= 10^{14} G.
description: 13 pages, 8 figures, 3 tables, version accepted for publication in MNRAS
Numerical analysis of ligament instability and breakup in shear flow
Creators: name: Yanaoka, H.
name: Nakayama, K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this study, we perform a numerical analysis of the instability of a ligament in shear flow and investigate the effects of air-liquid shear on the growth rate of the ligament interface, breakup time, and droplet diameter formed by the breakup. The ligament is stretched in the flow direction by the shearing of airflow. Furthermore, as the influence of the shear flow increases, the ligament becomes deformed into a liquid sheet, and a perforation forms at the center of the liquid sheet. The liquid sheet breaks up due to the growth of the perforation and contracts under the influence of surface tension, forming two ligaments with diameters smaller than that of the original ligament. The shearing of the airflow causes the original ligament to elongate, and the cross-section of the ligament becomes elliptical, which increases instability. As a result, the growth rate of the ligament exceeds the theoretical value, and increases with increasing wavenumber of the initial disturbance. Therefore, the diameter of the formed droplets in shear flow decreases due to the increase in the wavenumber that governs the breakup of the ligament, and because the growth rate increases, the breakup time for the ligament decreases. As the velocity difference of the shear flow increases, constrictions of the ligament form earlier and the diameter of the satellite droplet increases. As the diameter of the satellite droplet increases and that of the main droplet decreases, the dispersion of the droplet diameter decreases, making the diameter uniform.
description: 22 pages, 15 figures, 1 table
Recommender Systems in E-commerce
Creators: name: Salunke, Tanmayee
name: Nichite, Unnati
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: E-commerce recommender systems are becoming increasingly important in the current digital world. They are used to personalize user experience, help customers find what they need quickly and efficiently, and increase revenue for the business. However, there are several challenges associated with big data-based e-commerce recommender systems. These challenges include limited resources, data validity period, cold start, long tail problem, scalability. In this paper, we discuss the challenges and potential solutions to overcome these challenges. We also discuss the different types of e-commerce recommender systems, their advantages, and disadvantages. We conclude with some future research directions to improve the performance of e-commerce recommender systems.
Vertical stability of circular orbits in relativistic razor-thin disks
Creators: name: Vieira, Ronaldo S. S.
name: Ramos-Caro, Javier
name: Saa, Alberto
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: During the last few decades, there has been a growing interest in exact solutions of Einstein equations describing razor-thin disks. Despite the progress in the area, the analytical study of geodesic motion crossing the disk plane in these systems is not yet so developed. In the present work, we propose a definite vertical stability criterion for circular equatorial timelike geodesics in static, axially symmetric thin disks, possibly surrounded by other structures preserving axial symmetry. It turns out that the strong energy condition for the disk stress-energy content is sufficient for vertical stability of these orbits. Moreover, adiabatic invariance of the vertical action variable gives us an approximate third integral of motion for oblique orbits which deviate slightly from the equatorial plane. Such new approximate third integral certainly points to a better understanding of the analytical properties of these orbits. The results presented here, derived for static spacetimes, may be a starting point to study the motion around rotating, stationary razor-thin disks. Our results also allow us to conjecture that the strong energy condition should be sufficient to assure transversal stability of periodic orbits for any singular timelike hypersurface, provided it is invariant under the geodesic flow.
description: 13 pages, 4 figures; Accepted for publication in Physical Review D
Probing the topological surface states in superconducting Sn4Au single crystal: A magneto transport study
Creators: name: Sharma, M. M.
name: Rani, Poonam
name: Awana, V. P. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Materials exhibiting bulk superconductivity along with magnetoresistance (MR) in their normal state have emerged as suitable candidates for topological superconductivity. In this article, we report a flux free method to synthesize single crystal of topological superconductor candidate Sn4Au. The phase purity and single crystalline nature are confirmed through various characterizations viz. X-Ray diffraction (XRD), field emission scanning electron microscopy (FESEM), selected Area electron diffraction (SAED), and transmission electron microscopy (TEM). Chemical states of the constituent element viz. Sn and Au are analyzed through X-Ray photoelectron spectroscopy (XPS). Superconductivity in synthesized Sn4Au single crystal is evident form R-T plot and critical field (Hc) is determined through R-H plot at 2K i.e., just below critical temperature Tc. A positive magnetoresistance (MR) is observed in R-H measurements at different temperatures above Tc, viz. at 3K, 5K, 10K and 20K. Further, the magnetoconductivity (MC) is analyzed by using Hikami-Larkin-Nagaoka (HLN) formalism, which signifies the presence of weak antilocalization (WAL) effect in Sn4Au. Angle dependent magneto-transport measurement has been performed to detect the origin of the observed WAL effect in Sn4Au single crystal. Normalized MC vs HcosTheta plot shows presence of topological surface states (TSS) in the studied system. It is evident that Sn4Au is a 2.6K topological superconductor.
description: 25Pages Text + Figs: Submitted: J. Phys. Cond. Matt
Some pharmacological properties of 6-[N,S-dimethyl-N'-cyanoisothioureidomethyl]-6,11-dihyd ro-5H-dibenz[b,e]azepine (Fran 12)
Creators: name: Law, Sy Cheau.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
A Methodology to Investigate Challenges for Digital Twin Technology in Smart Agriculture
Creators: name: Büyüközkan, Gülçin
name: Uztürk, Deniz
Publisher: name: Unknown
Year: 2022
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: 2-Tuple Linguistic model
subject: DEMATEL
subject: Digital Twin
subject: MCDM
subject: Smart Agriculture

description: The agriculture sector is fundamental for social, economic, and environmental development. It needs novel approaches and technology-integrated processes to preserve its critical importance and survive for the future. Agricultural digitalization is an essential component of agricultural industrialization, focusing on agricultural research, infrastructural improvements, and data services. The combination of the Internet of Things/Everything (IoT/IoE) with RFID, sensors, and high-tech meters makes up smart agriculture (SA). Controlling and monitoring have become more easily applicable thanks to these technological improvements. SA replaces conventional farming methods with effective, rapid, and sustainable ones. It has the power to control water, pesticides, security, the environment, machines, and vehicles. Digital Twin (DT) technology is the mutual use of digital technologies such as remote sensing, IoT, and simulation. With its integrated structure, DT can help farmers to create a virtual twin of their physical entities in the virtual space. Accordingly, generating strategies and planning the production can be controlled by running simulations with the field's collected data. Therefore, this paper aims to investigate challenges to DT adoption in SA. For that purpose, a multicriteria decision-making (MCDM) approach is suggested. DEMATEL technique is provided to prioritize and evaluate causal relationships for DT adoption challenges. The DEMATEL technique is integrated with the 2-Tuple Linguistic (2-TL) model to improve its ability to deal with linguistic variables and create a decision-making process closer to human cognitive processes. A real case study is provided to test the applicability of the suggested methodology, and further discussions are presented.
Turbulent Rayleigh-Bénard convection with bubbles attached to the plate
Creators: name: Liu, Hao-Ran
name: Chong, Kai Leong
name: Yang, Rui
name: Verzicco, Roberto
name: Lohse, Detlef
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We numerically investigate turbulent Rayleigh-Bénard convection with gas bubbles attached to the hot plate, mimicking a core feature in electrolysis, catalysis, or boiling. The existence of bubbles on the plate reduces the global heat transfer due to the much lower thermal conductivity of gases as compared to liquids and changes the structure of the boundary layers. The numerical simulations are performed in 3D at Prandtl number Pr=4.38 (water) and Rayleigh number $10^7\le Ra \le10^8$. For simplicity, we assume the bubbles to be equally-sized and having pinned contact lines. We vary the total gas-covered area fraction $0.18 \le S_0 \le 0.62$, the relative bubble height $0.02\le h/H \le0.05$ (where $H$ is the height of the Rayleigh-Bénard cell), the bubble number $40 \le n \le 144$, and their spatial distribution. In all cases, asymmetric temperature profiles are observed, which we quantitatively explain based on the heat flux conservation at each horizontal section. We further propose the idea of using an equivalent single-phase setup to mimic the system with attached bubbles. Based on this equivalence, we can calculate the heat transfer. Without introducing any free parameter, the predictions for the Nusselt number, the upper and lower thermal boundary layer thicknesses, and the mean centre temperature well agree with the numerical results. Finally, our predictions also work for the cases with much larger Pr (e.g. $400$), which indicates that our results can also be applied to predict the mass transfer in water electrolysis with bubbles attached to the electrode surface or in catalysis.
description: 12 pages, 6 figures
Extracting OPE coefficient of Konishi at four loops
Creators: name: Gonçalves, Vasco
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute in this short note the OPE coefficient of two 20' operators and the Konishi. We use the OPE decomposition of a four point function of four 20' operators and the method of asymptotic expansions to compute the integrals at the order that it is needed.
description: 10 pages; v2 typos corrected
Page Layout Analysis of Text-heavy Historical Documents: a Comparison of Textual and Visual Approaches
Creators: name: Sven, Najem-Meyer
name: Matteo, Romanello
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Page layout analysis is a fundamental step in document processing which enables to segment a page into regions of interest. With highly complex layouts and mixed scripts, scholarly commentaries are text-heavy documents which remain challenging for state-of-the-art models. Their layout considerably varies across editions and their most important regions are mainly defined by semantic rather than graphical characteristics such as position or appearance. This setting calls for a comparison between textual, visual and hybrid approaches. We therefore assess the performances of two transformers (LayoutLMv3 and RoBERTa) and an objection-detection network (YOLOv5). If results show a clear advantage in favor of the latter, we also list several caveats to this finding. In addition to our experiments, we release a dataset of ca. 300 annotated pages sampled from 19th century commentaries.
description: Same as https://ceur-ws.org/Vol-3290/long_paper8670.pdf
Vibronic branching ratios for nearly-closed rapid photon cycling of SrOH
Creators: name: Lasner, Zack
name: Lunstad, Annika
name: Zhang, Chaoqun
name: Cheng, Lan
name: Doyle, John M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The vibrational branching ratios of SrOH for radiative decay to the ground electronic state, $X^{2}Σ^{+}$, from the first two electronically excited states, $A^{2}Π$ and $B^{2}Σ^{+}$, are determined experimentally at the $\sim10^{-5}$ level. The observed small branching ratios enable the design of a full, practical laser-cooling scheme, including magneto-optical trapping and sub-Doppler laser cooling, with $>10^4$ photon scatters per molecule. Ab initio calculations sensitive to weak vibronic transitions are performed to facilitate the experimental measurement and analysis, and show good agreement with experiment.
description: 6 pages, 3 figures, 3 tables
Simultaneous measurement of mass and rotation of trapped absorbing particles in air
Creators: name: Bera, Sudipta K.
name: Kumar, Avinash
name: Sil, Souvik
name: Saha, Tushar Kanti
name: Saha, Tanumoy
name: Banerjee, Ayan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We trap absorbing micro-particles in air by photophoretic forces generated using a single loosely focused Gaussian trapping beam. We measure a component of the radial Brownian motion of a trapped particle cluster and determine the power spectral density, mean squared displacement, and normalized position and velocity autocorrelation functions in order to characterize the photophoretic body force in a quantitative fashion for the first time. The trapped particles also undergo spontaneous rotation due to the action of this force. This is evident from the spectral density that displays clear peaks at the rotation and the particles' inertial resonance frequencies. We fit the spectral density to the well-known analytical function derived from the Langevin equation, measure the resonance and rotation frequencies and determine values for particle mass that we verify at different trapping laser powers with reasonable accuracy.
description: 5 pgs, 3 figures
Stellar longitudinal magnetic field determination through multi-Zeeman signatures
Creators: name: Vélez, J. C. Ramírez
name: Stift, M. J.
name: Navarro, S. G.
name: Córdova, J. P.
name: Sabin, L.
name: Ruelas-Mayorga, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. A lot of effort has been put into the detection and determination of stellar magnetic fields using the spectral signal obtained from the combination of hundreds or thousands of individual lines, an approach known as multi-line techniques. However, so far most of multi-line techniques developed that retrieve stellar mean longitudinal magnetic fields recourse to sometimes heavy simplifications concerning line shapes and Zeeman splittings. Aims. To determine stellar longitudinal magnetic fields by means of the Principal Components Analysis and Zeeman Doppler Imaging (PCA-ZDI) multi-line technique, based on accurate polarised spectral line synthesis. Methods. In this paper we present the methodology to perform inversions of profiles obtained with PCA-ZDI. Results. Inversions with various magnetic geometries, field strengths and rotational velocities show that we can correctly determine the effective longitudinal magnetic field in stars using the PCA-ZDI method.
description: Accepted for publication in Astronomy and Astrophysics
Contributions to quantum operations with light
Creators: name: Jeng, Hao
Publisher: name: The Australian National University
Year: 2023

description: Experiments were carried out to examine the basic properties and utility of several quantum states and operations of light. These experiments comprised mostly of the general elements of Gaussian quantum optics but require in addition a pair of special operations known as photon addition and noiseless amplification. It is shown that a number of important physical quantities are increased by the action of photon addition or noiseless amplification on entangled states, including the distillable entanglement and the rate of distributing secret keys using these entangled states. It is further shown that noiseless amplification can be embedded in a natural way into feed-forward setups such as quantum teleportation and measurement-based quantum gates, with the valuable effect of suppressing decoherence in these devices. In some cases, it is observed that multiple quantum operations could merge to produce new quantum effects: the combination of photon addition and coherent displacement leads to strong cubic phase shifts; quantum teleportation combined with noiseless amplification has the remarkable ability to purify displaced thermal states without reducing the displacement. In the special instance of photon addition on thermal states, a counter-intuitive transformation of the state of light arises which we verified by experiment, and which serves as a test of the validity of quantum mechanics. The facts established in this thesis have direct implications for quantum technology, including the provision of a route towards universal quantum computation and a new method for removing thermal decoherence without quantum error correction and with a far simpler setup.
First Detection of Cosmic Microwave Background Lensing and Lyman-α Forest Bispectrum
Creators: name: Doux, Cyrille
name: Schaan, Emmanuel
name: Aubourg, Eric
name: Ganga, Ken
name: Lee, Khee-Gan
name: Spergel, David N.
name: Tréguer, Julien
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the first detection of a correlation between the Lyman-$α$ forest and cosmic microwave background (CMB) lensing. For each Lyman-$α$ forest in SDSS-III/BOSS DR12, we correlate the one-dimensional power spectrum with the CMB lensing convergence on the same line of sight from Planck. This measurement constitutes a position-dependent power spectrum, or a squeezed bispectrum, and quantifies the non-linear response of the Lyman-$α$ forest power spectrum to a large-scale overdensity. The signal is measured at 5~$σ$ and is consistent with the $Λ$CDM expectation. We measure the linear bias of the Lyman-$α$ forest with respect to the dark matter distribution, and constrain a combination of non-linear terms including the non-linear bias. This new observable provides a consistency check for the Lyman-$α$ forest as a large-scale structure probe and tests our understanding of the relation between intergalactic gas and dark matter. In the future, it could be used to test hydrodynamical simulations and calibrate the relation between the Lyman-$α$ forest and dark matter.
description: 8 pages, 7 figures; accepted for publication in Phys. Rev. D
Wave Foundations of Ray Optics
Creators: name: Putland, Gavin Richard
Publisher: name: Zenodo
Year: 2020
Subjects: wave optics, ray optics, Huygens' principle, stasimochrone, Fermat's principle, Huygens' construction, wave slowness, Hamilton's construction, double refraction, birefringence

description: Chapter 1 Huygens' principle, too often asserted independently, is here developed with Huygens' original inevitability and a modern generality. Fermat's principle, too often stated in isolation and without even specifying the applicable propagation speed, is here developed as a consequence of Huygens' principle and justified in terms of other notions of a ray (line of sight, narrow beam). The equivalence of Huygens' construction and Fermat's principle — recognized by Young, Laplace, and Fresnel, further developed by Lorentz, proven analytically for two dimensions by De Witte, but neglected in textbooks — is here demonstrated in its full generality by elementary geometric arguments. The foregoing principles lead to rectilinear propagation in homogeneous media, the coincidence of rays and wave-normals in isotropic media, the general relation between the ray velocity and the normal velocity, and the general and ordinary laws of refraction and reflection. The laws of refraction and reflection are restated as conservation of the tangential component of wave slowness, leading to Hamilton's "common perpendicular" rule. The other feature of Hamilton's construction — the relation between the wave-slowness surface and the direction and magnitude of the ray slowness — is derived in two pages, and the construction is then compared with that of Huygens. For isotropic media, Hamilton's construction yields an ironic retrospective explanation of early geometric formulations of the ordinary law of refraction. In the last section, the refractive index is introduced as a normalized wave slowness, and previous results are restated in terms of refractive indices. Historical notes, with sources, are included.
description: This draft, called Version 4, is the first to be published on this site, and supersedes earlier drafts published elsewhere.
Southern Continent Imagery: World Maps, 1527-1619
Creators: name: Akeroyd, Catherine
Publisher: name: The Australian National University
Year: 2023

description: The completion in 1522 of Magellan's expedition to circumnavigate the world revealed to Europeans the sighting of Tierra del Fuego. This significant event re-energised the unresolved debate about the possible existence of a southern continent. While not all mapmakers were sufficiently encouraged to represent it on their maps, some assumed Tierra del Fuego was the northern tip of continental landmass in the southern hemisphere and over the next hundred years or so depicted their speculative representation of it on their world maps. Principal among those were mapmakers in Antwerp, Dieppe, Venice and Amsterdam who, lacking additional information, chose to populate the interior of their representation with imagery. Examination of the imagery shows that it is comprised of a number of distinct genres identified as Text, Nature's Marvels, Ethnographic Representations, Geometry, Allegory and Portraiture. On some maps a single genre may appear but on others multiple genres are seen. Reasons for mapmakers' use of these genres include familiar explanations such as decoration, concealment of ignorance and avoidance of horror vacui. Conclusions such as these however do not take into account the nature of the imagery, how it was employed, when it was used and what its purpose might be. Thus, the possibility that the genres may have been adopted for other reasons is not taken into account. This study examined the genres on sixty-nine printed world maps, one printed globe and seven manuscript world maps produced over a one-hundred-year period. It revealed that Text was used by some Flemish mapmakers; Nature's Marvels were the choice of the Venetians; and the Normans focused exclusively on Ethnographic Representations in the southern continent of their maps and their atlases. It was the Dutch mapmakers who designed and made use of multiple genres including Geometry, Allegory and Portraiture. Taken together this research concludes that these genres were employed for reasons other than to conceal uncertainty or simply to fill empty space decoratively. Their use was deliberative and they were chosen to serve a range of functions including educational, cultural and socio-political purposes.
Mid-infrared spectra of differentiated meteorites (achondrites): Comparison with astronomical observations of dust in protoplanetary and debris disks
Creators: name: Morlok, A.
name: Koike, C.
name: Tomeoka, K.
name: Mason, A. B.
name: Lisse, C. M.
name: Anand, M.
name: Grady, M. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Mid-infrared (5 micron to 25 micron) transmission/absorption spectra of differentiated meteorites (achondrites) were measured to permit comparison with astronomical observations of dust in different stages of evolution of young stellar objects. In contrast to primitive chondrites, achondrites underwent heavy metamorphism and/or extensive melting and represent more advanced stages of planetesimal evolution. Spectra were obtained from primitive achondrites (acapulcoite, winonaite, ureilite, and brachinite) and differentiated achondrites (eucrite, diogenite, aubrite, and mesosiderite silicates). The ureilite and brachinite show spectra dominated by olivine features, and the diogenite and aubrite by pyroxene features. The acapulcoite, winonaite, eucrite, and mesosiderite silicates exhibit more complex spectra, reflecting their multi-phase bulk mineralogy. Mixtures of spectra of the primitive achondrites and differentiated achondrites in various proportions show good similarities to the spectra of the few Myr old protoplanetary disks HD104237A and V410 Anon 13. A spectrum of the differentiated mesosiderite silicates is similar to the spectra of the mature debris disks HD172555 and HD165014. A mixture of spectra of the primitive ureilite and brachinite is similar to the spectrum of the debris disk HD113766. The results raise the possibility that materials produced in the early stage of planetesimal differentiation occur in the protoplanetary and debris disks.
Rag: F.L.A.G. Newsletter (September, 1981)
Creators: name: Feminist Lesbian Action Group
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Lesbians
valueUri: http://id.worldcat.org/fast/996540
subject: Women
valueUri: http://id.worldcat.org/fast/1176568
subject: Lesbianism
valueUri: http://id.worldcat.org/fast/996514
subject: Women's rights
valueUri: http://id.worldcat.org/fast/1178818
subject: Sex discrimination against women
valueUri: http://id.worldcat.org/fast/1114376
subject: Women--Legal status, laws, etc.
valueUri: http://id.worldcat.org/fast/1176824
subject: Women--Social conditions
valueUri: http://id.worldcat.org/fast/1176947
subject: Feminism
valueUri: http://id.worldcat.org/fast/922671
subject: Women--Economic conditions
valueUri: http://id.worldcat.org/fast/1176665
subject: Women--Societies and clubs
valueUri: http://id.worldcat.org/fast/1176970

description: The newsletter of the Feminist Lesbian Action Group (FLAG). The aim of FLAG was to build a solid support system for lesbians in Victoria, to effect social and political change, and to provide opportunities for social contact and discussion concerning issues of interest to lesbians.
Refraction in geodetic leveling
Creators: name: Sampson, Joseph John.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Refinements of the Weyl pure geometrical thick branes from information-entropic measure
Creators: name: Correa, R. A. C.
name: Dantas, D. M.
name: Moraes, P. H. R. S.
name: Dutra, A. de Souza
name: Almeida, C. A. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This letter aims to analyse the so-called configurational entropy in the Weyl pure geometrical thick brane model. The Weyl structure plays a prominent role in the thickness of this model. We find a set of parameters associated to the brane width where the configurational entropy exhibits critical points. Furthermore, we show, by means of this information-theoretical measure, that a stricter bound on the parameter of Weyl pure geometrical brane model arises from the CE.
Enabling Reproducibility in Secure Data Facilities
Creators: name: Lichtwardt, Beate
name: Magder, Cristina
Publisher: name: Zenodo
Year: 2023
Subjects: Research Reproducibility, Reproducibility, Peer Review, Blind Peer Review, Double-blind Peer Review, Secure Data Facility, Trusted Research Environment, TRE, Research Data Centre, RDC, Secure Access Data, Controlled Data, Confidential Data, Personal/ Sensitive Data,

description: In the context of the constantly evolving controlled/confidential data landscape reproducibility has become a growing concern for journals, researchers and data service providers. Personal/confidential and sensitive data can only be accessed via a multi-stage application process, hence it has long been recognised by journals that peer reviewers cannot directly reproduce scientific research based on these data due to access constraints and needed resources.

 As a commonly accepted workaround, the code can be submitted to the journal along with the paper. Researchers can use the standard output request channels to ask for the code files to be released from the Secure Data Facility/Trusted Research Environment (TRE). However, well-established Secure Data Facilities are increasingly receiving inquiries on better alternatives to facilitate and assist more robust and transparent reproducibility for peer reviewers before journal article publication.

 Our talk examines possible alternative solutions for how Secure Data Facilities could handle the new, more transparent, reproducibility requirements for personal/confidential data, including the very practical implications of proposed processes. Theoretically, options could range from certified reproducibility provided by a tailor-made service (with-)in the Secure Data Facility to allowing access for peer reviewers in the Secure Data Facility. We will also discuss these options in terms of consequences and potential challenges for non-blind versus blind peer review (single- and double-blinded). We will outline the considerations each option would require as well as its very practical implications. The main aim of the presentation is to help pave the way for enabling the reproducibility of scientific research based on controlled/confidential data in future, and on how Secure Data Facilities can better support the peer review process.
Deep Representations for Time-varying Brain Datasets
Creators: name: Lin, Sikun
name: Tang, Shuyun
name: Grafton, Scott
name: Singh, Ambuj
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Finding an appropriate representation of dynamic activities in the brain is crucial for many downstream applications. Due to its highly dynamic nature, temporally averaged fMRI (functional magnetic resonance imaging) can only provide a narrow view of underlying brain activities. Previous works lack the ability to learn and interpret the latent dynamics in brain architectures. This paper builds an efficient graph neural network model that incorporates both region-mapped fMRI sequences and structural connectivities obtained from DWI (diffusion-weighted imaging) as inputs. We find good representations of the latent brain dynamics through learning sample-level adaptive adjacency matrices and performing a novel multi-resolution inner cluster smoothing. We also attribute inputs with integrated gradients, which enables us to infer (1) highly involved brain connections and subnetworks for each task, (2) temporal keyframes of imaging sequences that characterize tasks, and (3) subnetworks that discriminate between individual subjects. This ability to identify critical subnetworks that characterize signal states across heterogeneous tasks and individuals is of great importance to neuroscience and other scientific domains. Extensive experiments and ablation studies demonstrate our proposed method's superiority and efficiency in spatial-temporal graph signal modeling with insightful interpretations of brain dynamics.