cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Broadband Spectro-temporal Study on Blazar TXS 1700+685
Creators: name: Banerjee, Anuvab
name: Nandi, Prantik
name: Prince, Raj
name: Khatoon, Rukaiya
name: Bose, Debanjan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We attempt to present a multiwavelength variability and correlation study as well as detailed multi-waveband spectral characteristics of the May 2021 $γ$-ray flare of the blazar source TXS 1700+685. The multi-wavelength observation from \textit{Fermi}-LAT, \textit{Swift}-XRT/UVOT as well as radio archival data are used for our spectro-temporal investigation. We estimate the variability time-scale of the source from the flux doubling time in different flaring regions detected in \textit{Fermi}-LAT observation and the shortest variability time is used to put a constraint on the minimum Doppler factor and on the size of the emission region. We have detected a statistically significant quasi-periodic oscillation feature (QPO) at $\sim$ 17 days. The broad-band emission is satisfactorily represented during its flaring state with a leptonic synchrotron and inverse Compton component. From the broadband spectral modeling, we observe the external Comptonization of the seed photons originating in the broad line region to be dominant compared to the dusty torus. This is further supported by the fact that the emission region is also found to be residing within the BLR. The equipartition value implies the energy density of the magnetic field in the jet comoving frame is weak, and that is also reflected in the magnetic field and low power corresponding to the magnetic field component of the jet. In order to produce the high energy hump, we need the injection of a large population of high energy electrons and/or the presence of strong magnetic field; and we observe the later component to be sub-dominant in our case. The flat rising and steep falling profile in the $γ$-ray SED as well as the break or spectral curvature at $\sim$ 1 GeV are in commensuration with the flat-spectrum radio quasar (FSRQ) nature of the source.
Numerable open covers and representability of topological stacks
Creators: name: Pavlov, Dmitri
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55N30 (Primary) 18F20, 55U35, 18N60 (Secondary)

description: We prove that the class of numerable open covers of topological spaces is the smallest class that contains covers with pairwise disjoint elements and numerable covers with two elements, closed under composition and coarsening of covers. We apply this result to establish an analogue of the Brown--Gersten property for numerable open covers of topological spaces: a simplicial presheaf on the site of topological spaces satisfies the homotopy descent property for all numerable open covers if and only if it satisfies it for numerable covers with two elements and covers with pairwise disjoint elements. We also prove a strengthening of these results for manifolds, ensuring that covers with two elements can be taken to have a specific simple form. We apply these results to deduce a representability criterion for stacks on topological spaces similar to arXiv:1912.10544. We also use these results to establish new simple criteria for chain complexes of sheaves of abelian groups to satisfy the homotopy descent property.
description: 25 pages. Comments and questions are welcome. Added strengthened results for the case of cartesian spaces (Theorems 1.3 and 1.7). v2: Identical to the journal version except for formatting and style
New constraints on axion-gauge field dynamics during inflation from $Planck$ and BICEP/Keck data sets
Creators: name: Campeti, Paolo
name: Özsoy, Ogan
name: Obata, Ippei
name: Shiraishi, Maresuke
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present new constraints on spectator axion-${\rm U}(1)$ gauge field interactions during inflation using the latest $Planck$ (PR4) and BICEP/Keck 2018 data releases. This model can source tensor perturbations from amplified gauge field fluctuations, driven by an axion rolling for a few e-folds during inflation. The gravitational waves sourced in this way have a strongly scale-dependent (and chiral) spectrum, with potentially visible contributions to large/intermediate scale $B$-modes of the CMB. We first derive theoretical bounds on the model imposing validity of the perturbative regime and negligible backreaction of the gauge field on the background dynamics. Then, we determine bounds from current CMB observations, adopting a frequentist profile likelihood approach. We study the behaviour of constraints for typical choices of the model's parameters, analyzing the impact of different dataset combinations. We find that observational bounds are competitive with theoretical ones and together they exclude a significant portion of the model's parameter space. We argue that the parameter space still remains large and interesting for future CMB experiments targeting large/intermediate scales $B$-modes.
description: 26 pages + appendix, 11 Figures. Accepted for publication in JCAP. Updated references
Práctica de Aula 8. Gripe y virus SARS-COV-2
Creators: name: Montesdeoca-Ramírez, Daniela Celia
name: Morales-Gázquez, Mª José
Publisher: name: Zenodo
Year: 2022
Subjects: subject: Vacunas
subject: Gripe
subject: SARS-COV-2
subject: COVID-19
subject: Prevención
subject: 42413

description: Material docente de la asignatura CEAPS (42413)
The Turing Way: A collaborative guide to data science and research
Creators: name: Castro, Alejandro Coca
Publisher: name: Zenodo
Year: 2022
Subjects: reproducibility
open science
open scholarship
community-led
open source

description: A talk given by Alejandro Coca-Castro who represented the Turing Way as part of the Data Science: From Academia to Industry Report Launch by Energy Systems Catapult. The Turing Way is an open-source, community-led, and collaboratively developed project on making data science and research skills accessible, comprehensible, and beneficial for a wider research community. We bring together individuals from diverse fields and expertise to develop practices and learning resources that can make data research comprehensible and useful for everyone. These resources are organised as an online book with over 250 chapters across five guides on reproducibility, project design, collaboration, communication and ethics in research. All questions, comments, recommendations, and discussions are facilitated through an online GitHub repository.
On Lowest Lying $\frac{1}{2}^-$ Octet Baryons
Creators: name: Chen, Chang
name: Niu, Wen-Qi
name: Zheng, Han-Qing
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The recently proposed $N^*(890)$ $1/2^-$ baryon is studied in a flavor $SU(3)$ scheme with $K$ matrix unitarization, by fitting to low energy cross section and phase shift data. It is found that $N^*(890)$ co-exists with low lying poles in other channels, which have been extensively discussed in the literature, though they belong to different octets, in the $SU(3)$ limit. Hence the existence of $N^*(890)$ is further verified.
description: 8 pages
Understanding the experiences of women with multiple roles in online social work education programs
Creators: name: Schwartz, Rachel
Publisher: name: No Publisher Supplied
Year: 2024

description: Women’s access and representation in higher education has dramatically increased over the past 50 years, with recent data indicating that women make up 59.5% of all college students, surpassing men in both new applications and recent program completion rates (Belkin, 2021). The number of women studying online has continued to grow over the past few years, with 50% of undergraduate online students and 52% of graduate online students identifying as women (Duffin, 2020). Within the field of social work, graduate social work degree programs report 83.4% of students who identify as women and more than half of accredited programs offer online/hybrid options (Council on Social Work Education, 2023). Many women students who are pursuing education report that they combine student roles with full or part-time employment, and with parenting or other caretaking responsibilities (Cragg et al., 2005; Furst-Bowe, 2002; Home, 1997; Rockinson-Szapkiw et al., 2017; Stone & O’Shea, 2019). This qualitative study aims to understand the lived experiences of women who hold multiple roles (i.e., caretaking, employment, and student) and were enrolled in online graduate level social work education. This study used semi-structured in-depth individual interviews to explore the experiences of women in fully online MSW programs. Forty-eight interviews were completed with participants across nine schools of social work. Thematic analysis was used to analyze the data from the interviews and themes were identified to tell the participants stories, starting with how online education created opportunity for the participants to pursue their degree – that otherwise may not have been possible because of their different roles. Within this discussion themes related to gender were explored, particularly how participants saw their own experiences impacted by gender roles and their identity as women. The study also examined themes connected to how programs support these students, the challenges programs/curriculum created, and how a sense of community is perceived. The findings have important implications for higher education program administrators, including how to better support students in online classrooms, how programmatic supports are provided and made available, how programs consider curriculum and format, and support and training for those teaching online.
title: Understandings of punishment and justice in the narratives of lay Polish people
Creators: name: Matczak, Anna
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2017
Subjects: subject: H Social Sciences
subject: HN Social history and conditions. Social problems. Social reform

description: This research brings to light the Polish context of a post-socialist, post-transformation society of peasant roots and high religiosity which greatly contributes to the comparative criminological scholarship. The purpose of this doctoral research is to explore how a small number of Polish people understand punishment and justice, and how their narratives inform the viability of restorative approaches to justice. In so doing, this research recognises the value of lay opinion in the discussion of punishment and justice, and approaches punishment and justice as social activities, which echoes the argument that stories about crime and punishment are entangled with people’s daily routines, and as a result are lodged in their cultural imagination (see Garland & Sparks, 2000). The socialist past, hasty transition from socialism to democracy and from a centrally-planned to free market economy has influenced participants’ perceptions of the justice administration and the institutions involved in these processes. Lay Polish people shall be seen as Homo post-Sovieticus, whose perceptions of punishment and justice need to be analysed along with the legacy of the previous socialist system as well as post-1989 changes. Participants’ perceptions of the Polish criminal justice system, the Polish police and unpaid work assist to understand a number of factors that might influence the development of restorative justice in the Polish context. The findings of this study also encourage broadening the scope of the restorative justice discussion and examining its preconditions against wider sociological and criminological discourses on punishment and justice. Although the relationship might be defined as ‘uneasy’, restorative justice, since its conception, is interwoven with the two. One of restorative justice’s central hopes was to establish an alternative system of crime resolution that would eliminate the infliction of pain. However, the trajectory of restorative practices and demonstrates that the functioning of a majority of them is dependent on the criminal justice agencies and that there is a need to address better the notion of punishment in restorative encounters.
The polar orbit of the warm Neptune GJ436b seen with VLT/ESPRESSO
Creators: name: Bourrier, V.
name: Osorio, M. R. Zapatero
name: Allart, R.
name: Attia, O.
name: Cretignier, M.
name: Dumusque, X.
name: Lovis, C.
name: Adibekyan, V.
name: Borsa, F.
name: Figueira, P.
name: Hernández, J. I. González
name: Mehner, A.
name: Santos, N. C.
name: Schmidt, T.
name: Seidel, J. V.
name: Sozzetti, A.
name: Alibert, Y.
name: Casasayas-Barris, N.
name: Ehrenreich, D.
name: Curto, G. Lo
name: Martins, C. J. A. P.
name: Di Marcantonio, P.
name: Mégevand, D.
name: Nunes, N. J.
name: Palle, E.
name: Poretti, E.
name: Sousa, S. G.
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: GJ436b might be the prototype of warm Neptunes that have undergone late migration induced by an outer companion. Precise determination of the orbital architecture of such systems is critical to constraining their dynamical history and evaluating the role of delayed migration in the exoplanet population. To this purpose we analyzed the Rossiter-McLaughlin (RM) signal of GJ436 b in two transits - recently observed with ESPRESSO - using three different techniques. The high level of precision achieved in radial velocity (RV) measurements allows us to detect the deviation from the Keplerian orbit, despite the slow rotation of the M dwarf host (vsini = 272.0+40.0-34.0 m/s), and to measure the sky-projected obliquity ($λ$ = 102.5+17.2-18.5$^{\circ}$). The Reloaded RM technique, which allows the stellar RV field along the transit chord to be analyzed, yields $λ$ = 107.5+23.6-19.3$^{\circ}$ and vsini = 292.9+41.9-49.9 m/s. The RM Revolutions technique, which allows us to fit the spectral profiles from all planet-occulted regions together, yields $λ$ = 114.1+22.8-17.8$^{\circ}$ and vsini = 300.5+45.9-57.0 m/s. The consistent results between these three techniques, and with published results from HARPS/HARPS-N data, confirm the polar orbit of GJ436b and support the hypothesis that its origin lies in Kozai migration. Results from a joint RM Revolutions analysis of the ESPRESSO, HARPS, and HARPS-N datasets ($λ$ = 113.5+23.3-17.3$^{\circ}$; vsini = 293.5+43.7-52.2 m/s) combined with a revised stellar inclination ($i_\star$ = 35.7+5.9-7.6$^{\circ}$ or 144.2+7.6-5.9$^{\circ}$) lead us to constrain the 3D obliquity $Ψ$ to 103.2+12.8-11.5$^{\circ}$.
description: 10 pages, 9 figures, accepted for publication in A&A (27 January 2022)
Machine learning technique for morphological classification of galaxies from SDSS. II. The image-based morphological catalogs of galaxies at 0.02
Creators: name: Vavilova, I. B.
name: Khramtsov, V.
name: Dobrycheva, D. V.
name: Vasylenko, M. Yu.
name: Elyiv, A. A.
name: Melnyk, O. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences
subject: H.1
subject: 14J60 (Primary)

description: We applied the image-based approach with a convolutional neural network model to the sample of low-redshifts galaxies with $-24^{m}
description: 25 pages, 7 figures, 2 tables
A #DataCreativities How-To Guide for Collaborative Attribution
Creators: name: Spreadborough, Kristal
name: Melzack, Gene
name: Fitzgerald, Emily
Publisher: name: University of Melbourne
Year: 2020
Subjects: Data communications
Performing arts not elsewhere classified
Creative arts, media and communication curriculum and pedagogy
Other creative arts and writing not elsewhere classified

description: This document has three goals:1. To clearly define how the #DataCreativities collaboration outputs should be cited by others,2. To clearly state how the #DataCreativities collaboration will cite others,3. To make explicit how the #DataCreativities collaboration approaches individual and collective attribution. We believe that such a document is necessary as data and output citation (especially when those outputs are Non Traditional Research Outputs which are common in the #DataCreativities collaboration) can often be ambiguous. Additionally, we wish to clearly articulate our approach to attribution since collective attribution is less common than individual attribution in the academic context. This document serves as a record of the #DataCreativities approach, and may be used as a blue print for other collaborations engaged in similar work.
Please cite as:#DataCreativities (2020): A #DataCreativities How-To Guide for Collaborative Attribution. https://doi.org/10.26188/13325207

Visit the #DataCreativities Omeka site here: https://omeka.cloud.unimelb.edu.au/datacreative/about
A #DataCreativities How-To Guide for Collaborative Attribution
Creators: name: Spreadborough, Kristal
name: Melzack, Gene
name: Fitzgerald, Emily
Publisher: name: University of Melbourne
Year: 2020
Subjects: Data communications
Performing arts not elsewhere classified
Creative arts, media and communication curriculum and pedagogy
Other creative arts and writing not elsewhere classified

description: This document has three goals:1. To clearly define how the #DataCreativities collaboration outputs should be cited by others,2. To clearly state how the #DataCreativities collaboration will cite others,3. To make explicit how the #DataCreativities collaboration approaches individual and collective attribution. We believe that such a document is necessary as data and output citation (especially when those outputs are Non Traditional Research Outputs which are common in the #DataCreativities collaboration) can often be ambiguous. Additionally, we wish to clearly articulate our approach to attribution since collective attribution is less common than individual attribution in the academic context. This document serves as a record of the #DataCreativities approach, and may be used as a blue print for other collaborations engaged in similar work.
Please cite this data visualisation as:A #DataCreativities How-To Guide for Collaborative Attribution. https://doi.org/10.26188/13325207
Developing a Victorious Strategy to the Second Strong Gravitational Lensing Data Challenge
Creators: name: Bom, C. R.
name: Fraga, B. M. O.
name: Dias, L. O.
name: Schubert, P.
name: Valentin, M. Blanco
name: Furlanetto, C.
name: Makler, M.
name: Teles, K.
name: de Albuquerque, M. Portes
name: Metcalf, R. Benton
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Strong Lensing is a powerful probe of the matter distribution in galaxies and clusters and a relevant tool for cosmography. Analyses of strong gravitational lenses with Deep Learning have become a popular approach due to these astronomical objects' rarity and image complexity. Next-generation surveys will provide more opportunities to derive science from these objects and an increasing data volume to be analyzed. However, finding strong lenses is challenging, as their number densities are orders of magnitude below those of galaxies. Therefore, specific Strong Lensing search algorithms are required to discover the highest number of systems possible with high purity and low false alarm rate. The need for better algorithms has prompted the development of an open community data science competition named Strong Gravitational Lensing Challenge (SGLC). This work presents the Deep Learning strategies and methodology used to design the highest-scoring algorithm in the II SGLC. We discuss the approach used for this dataset, the choice for a suitable architecture, particularly the use of a network with two branches to work with images in different resolutions, and its optimization. We also discuss the detectability limit, the lessons learned, and prospects for defining a tailor-made architecture in a survey in contrast to a general one. Finally, we release the models and discuss the best choice to easily adapt the model to a dataset representing a survey with a different instrument. This work helps to take a step towards efficient, adaptable and accurate analyses of strong lenses with deep learning frameworks.
description: 14 pages, 12 figures
A #DataCreativities How-To guide for using Figshare and Omeka
Creators: name: Spreadborough, Kristal
name: Melzack, Gene
name: Fitzgerald, Emily
Publisher: name: University of Melbourne
Year: 2020
Subjects: Creative arts, media and communication curriculum and pedagogy

description: This guide outlines how the #DataCreativities team uses Figshare and Omeka to share our outputs, and archive and curate outputs from others that we have used within our collaboration. The guide also provides some general information about how others can also use Figshare and Omeka to share their outputs.
Please cite as:#DataCreativities (2020): A #DataCreativities How-To guide for using Figshare and Omeka. https://doi.org/10.26188/13325219
Visit the #DataCreativities Omeka site here: https://omeka.cloud.unimelb.edu.au/datacreative/about
Multi-chaotic inflation with and without spectator field
Creators: name: Morishita, Yukiyoshi
name: Takahashi, Tomo
name: Yokoyama, Shuichiro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the result of Planck+BICEP/Keck recently released, we investigate the consistency of the multi-field inflation models in terms of the spectral index $n_s$ and the tensor-to-scalar ratio $r$. In this study, we focus on double-inflaton models with and without a spectator field. We find that inflaton with a quadratic potential can become viable when three fields with a specific hierarchical mass spectrum are realized such that two fields act as inflatons and the other one is the spectator. We also discuss the conditions to avoid the fine-tuning, by careful study of how the prediction depends on the background trajectory in the inflaton-field space.
description: 22 pages, 7 figures, accepted for publication in JCAP
Postcards from the Pandemic
Creators: name: MacTavish, Kenna
Publisher: name: University of Melbourne
Year: 2020
Subjects: Other education not elsewhere classified
Sociology of education
Teacher education and professional development of educators

description: This is a template for Postcards from the Pandemic featuring the digital painting, "Illustrated Home Office[s]"
It is designed to garner a 100w reflection on the experience of working from home.
Macroscopic charge segregation in driven polyelectrolyte solutions
Creators: name: Bagchi, Debarshee
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Understanding the behavior of charged complex fluids is crucial for a plethora of important industrial, technological, and medical applications. Using coarse-grained molecular dynamics simulations, here we investigate the properties of a polyelectrolyte solution, with explicit counterions and implicit solvent, that is driven by a steady electric field. By properly tuning the interplay between interparticle electrostatics and the applied electric field, we uncover two nonequilibrium continuous phase transitions as a function of the driving field. The first transition occurs from a homogeneously mixed phase to a macroscopically charge segregated phase, in which the polyelectrolyte solution self-organizes to form two lanes of like-charges, parallel to the applied field. We show that the fundamental underlying factor responsible for the emergence of this charge segregation in the presence of electric field is the excluded volume interactions of the drifting polyelectrolyte chains. As the drive is increased further, a re-entrant transition is observed from a charge segregated phase to a homogeneous phase. The re-entrance is signaled by the decrease in mobility of the monomers and counterions, as the electric field is increased. Furthermore, with multivalent counterions, a counterintuitive regime of negative differential mobility is observed, in which the charges move progressively slower as the driving field is increased. We show that all these features can be consistently explained by an intuitive trapping mechanism that operates between the oppositely moving charges, and present numerical evidence to support our claims. Parameter dependencies and phase diagrams are studied to better understand charge segregation in such driven polyelectrolyte solutions.
description: Main text and SI included in one PDF. Comments/suggestions are welcome
Glossary of terms commonly used in the #DataCreativities collaboration
Creators: name: Spreadborough, Kristal
Publisher: name: University of Melbourne
Year: 2020
Subjects: Performing arts not elsewhere classified
Creative arts, media and communication curriculum and pedagogy

description: This document is a glossary of terms commonly used by the #DataCreativities team. The goal of this document is to help develop a shared language for an interdisciplinary collaboration. This is a living document and will be iteratively updated. Please cite this document as:
#DataCreativities (2020): Glossary of terms commonly used in the #DataCreativities collaboration. https://doi.org/10.26188/13337900
An Interactive Glossary of terms commonly used in the #DataCreativities collaboration
Creators: name: Spreadborough, Kristal
Publisher: name: University of Melbourne
Year: 2020
Subjects: Performing arts not elsewhere classified
Creative arts, media and communication curriculum and pedagogy

description: View and interact with the visualisation here: https://kristalspreadborough.github.io/ZoomCircle2/interactive/
This interactive visualisation is a representation of the "Glossary of terms commonly used in the #DataCreativities collaboration" document produced by the #DataCreativities team. The goal of this visualisation is to be an interactive glossary - providing a different way of engaging in the glossary content.
This is a living visualisation and will be iteratively updated.
Please cite this as:
#DataCreativities (2020): An Interactive Glossary of terms commonly used in the #DataCreativities collaboration. https://doi.org/10.26188/13337915
NOSNOC: A Software Package for Numerical Optimal Control of Nonsmooth Systems
Creators: name: Nurkanović, Armin
name: Diehl, Moritz
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This letter introduces the NOnSmooth Numerical Optimal Control (NOSNOC) open-source software package. It is a modular MATLAB tool based on CasADi and IPOPT for numerically solving Optimal Control Problems (OCP) with piecewise smooth systems (PSS). The tool supports: 1) automatic reformulation of systems with state jumps into PSS (via the time-freezing reformulation [Nurkanović et al., 2021]) and of PSS into computationally more convenient forms, 2) automatic discretization of the OCP via, e.g., the recently introduced Finite Elements with Switch Detection [Nurkanović et al., 2022] which enables high accuracy optimal control and simulation of PSS, 3) solution methods for the resulting discrete-time OCP. The nonsmooth discrete-time OCP are solved with techniques of continuous optimization in a homotopy procedure, without the use of integer variables. This enables the treatment of a broad class of nonsmooth systems in a unified way. Two tutorial examples are given. A benchmark shows that NOSNOC provides both faster and more accurate solutions than conventional approaches, including mixed-integer formulations.
description: Accepted for publication for the IEEE Control Systems Letters (L-CSS)
Effects of electrostatic interactions on Kapitza resistance in hexagonal boron nitride-water interfaces
Creators: name: Alosious, Sobin
name: Kannam, Sridhar Kumar
name: Sathian, Sarith P.
name: Todd, B. D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: Electrostatic interactions in nanoscale systems can influence the heat transfer mechanism and interfacial properties. This study uses molecular dynamics simulations to investigate the impact of various electrostatic interactions on the Kapitza resistance ($R_k$) on a hexagonal boron nitride-water system. The Kapitza resistance at hexagonal boron nitride nanotube (hBNNT)-water interface reduces with an increase in diameter of the nanotube due to more aggregation of water molecules per unit surface area. An increase in the partial charges on boron and nitride caused the reduction in $R_k$. With the increase in partial charge, a better hydrogen bonding between hBNNT and water was observed, whereas the structure and order of the water molecules remain the same. Nevertheless, the addition of NaCl salt into water does not have any influence on interfacial thermal transport. $R_k$ remains unchanged with electrolyte concentration since the cumulative Coulombic interaction between the ions, and the hBNNT is significantly less when compared with water molecules. Furthermore, the effect of electric field strength on interfacial heat transfer is also investigated by providing uniform positive and negative surface charges on the outermost hBN layers. $R_k$ is nearly independent of the practical range of applied electric fields and decreases with an increasing electric field for extreme field strengths until the electro-freezing phenomenon occurs. The ordering of water molecules towards the charged surface leads to an increase in the layering effect, causing the reduction in $R_k$ in the presence of an electric field.
description: 35 pages, 9 figures
#DataCreativities glossary of terms website
Creators: name: Spreadborough, Kristal
Publisher: name: University of Melbourne
Year: 2020
Subjects: Creative arts, media and communication curriculum and pedagogy
Other creative arts and writing not elsewhere classified

description: View the resource here: https://kristalspreadborough.github.io/ZoomCircle2/

On this site you will fond a glossary of terms commonly used by the #DataCreativities team. This glossary is expressed in two ways: as an Interactive Glossary, and as a Text Glossary page. Both have the same information, but offer different ways to engage with the content. Suggested citations for this resource are:
Interactive Glossary, found at https://kristalspreadborough.github.io/ZoomCircle2/interactive/
#DataCreativities (2020): An Interactive Glossary of terms commonly used in the #DataCreativities collaboration. https://doi.org/10.26188/13337915
Text Glossary, found at https://kristalspreadborough.github.io/ZoomCircle2/text/
#DataCreativities (2020): Glossary of terms commonly used in the #DataCreativities collaboration. https://doi.org/10.26188/13337900
The entire website, found at https://kristalspreadborough.github.io/ZoomCircle2/
#DataCreativities (2020): #DataCreativities glossary of terms website. https://doi.org/10.26188/13363682
To find out more about the #DataCreativites team and our work, visit our Omeka Page: https://omeka.cloud.unimelb.edu.au/datacreative/
The Fundamental Plane Relation for Gamma-Ray Pulsars Implied by 4FGL
Creators: name: Kalapotharakos, Constantinos
name: Wadiasingh, Zorawar
name: Harding, Alice K.
name: Kazanas, Demosthenes
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We explore the validity of the recently reported fundamental plane (FP) relation of gamma-ray pulsars using 190 pulsars included in the latest 4FGL-DR3 catalog. This sample number is more than twice as large as that of the original study. The FP relation incorporates 4 parameters, i.e., the spin-down power, $\dot{\mathcal{E}}$, the surface magnetic field, $B_{\star}$, the total gamma-ray luminosity, $L_γ$, and a spectral cutoff energy, $ε_{\rm cut}$. The derivation of $ε_{\rm cut}$ is the most intriguing one because $ε_{\rm cut}$ depends on the proper interpretation of the available phase-averaged spectra. We construct synthetic phase-averaged spectra, guided by the few existing phase-resolved ones, to find that the best fit cutoff energy, $ε_{\rm c1}$, corresponding to a purely exponential cutoff (plus a power law) spectral form, is the parameter that optimally probes the maximum cutoff energy of the emission that originates from the core of the dissipative region, i.e., the equatorial current sheet. Computing this parameter for the 190 4FGL pulsars, we find that the resulting FP relation, i.e. the gamma-ray luminosity in terms of the other observables, reads $L_γ=10^{14.3\pm 1.3}(ε_{\rm c1}/{\rm MeV})^{1.39\pm0.17}(B_{\star}/{\rm G})^{0.12\pm 0.03}(\dot{\mathcal{E}}/{\rm erg\;s^{-1}})^{0.39\pm 0.05}{\rm ~erg\;s^{-1}}$; this is in good agreement with both the empirical relation reported by Kalapotharakos et al. (2019) and the theoretically predicted relation for curvature radiation. Finally, we revisit the radiation reaction limited condition, to find it is a sufficient but not necessary condition for the theoretical derivation of the FP relation. However, the assumption of the radiation reaction limited acceleration reveals the underlying accelerating electric field component and its scaling with $\dot{\mathcal{E}}$.
description: 20 pages, 14 figures, 3 tables, minor revisions and a typo correction in the most important equation of the paper, accepted for publication in ApJ
#DataCreativities Workshop Padlet
Creators: name: GLASSER, SOLANGE
Publisher: name: University of Melbourne
Year: 2020
Subjects: Performing arts not elsewhere classified
Creative arts, media and communication curriculum and pedagogy
Other creative arts and writing not elsewhere classified

description: Link to site: https://omeka.cloud.unimelb.edu.au/datacreative/workshoppadlet

A Padlet from the 2020 #DataCreativities workshop (https://omeka.cloud.unimelb.edu.au/datacreative/workshop2020). It contains a collection of gifs which reflect:

Attendee's feelings pre workshop feelings, represented in gifs;

A list of badges created by attendees during the workshop;

Attendee's feelings post workshop feelings, represented in gifs.

The creation of this Padlet was let by Solange Glasser from the #DataCreativities team.

 Please cite as: #DataCreativities (2020): #DataCreativities Workshop Padlet. https://doi.org/10.26188/13455626 Visit the #DataCreativities Omeka site here: https://omeka.cloud.unimelb.edu.au/datacreative/about
Inverse nodal problem for Dirac operator with integral type nonlocal boundary conditions
Creators: name: Ozkan, A. Sinan
name: Adalar, İbrahim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: In this paper, Dirac operator with some integral type nonlocal boundary conditions is studied. We show that the coefficients of the problem can be uniquely determined by a dense set of nodal points. Moreover, we give an algorithm for the reconstruction of some coefficients of the operator.
100 Gb/s High Throughput Serial Protocol (HTSP) for Data Acquisition Systems with Interleaved Streaming
Creators: name: Ruckman, L.
name: Doering, D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Hardware Architecture (cs.AR)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Demands on Field-Programmable Gate Array (FPGA) data transport have been increasing over the years as frame sizes and refresh rates increase. As the bandwidths requirements increase the ability to implement data transport protocol layers using "soft" programmable logic becomes harder and start to require harden IP blocks implementation. To reduce the number of physical links and interconnects, it is common for data acquisition systems to require interleaving of streams on the same link (e.g. streaming data and streaming register access). This paper presents a way to leverage existing FPGA harden IP blocks to achieve a robust, low latency 100 Gb/s point-to-point link with minimal programmable logic overhead geared towards the needs of data acquisition systems with interleaved streaming requirements.
Radio Scattering Horizons for Galactic and Extragalactic Transients
Creators: name: Ocker, S. K.
name: Cordes, J. M.
name: Chatterjee, S.
name: Gorsuch, M. R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Radio wave scattering can cause severe reductions in detection sensitivity for surveys of Galactic and extragalactic fast ($\sim$ms duration) transients. While Galactic sources like pulsars undergo scattering in the Milky Way interstellar medium (ISM), extragalactic fast radio bursts (FRBs) can also experience scattering in their host galaxies and other galaxies intervening their lines-of-sight. We assess Galactic and extragalactic scattering horizons for fast radio transients using a combination of NE2001 to model the dispersion measure (DM) and scattering time ($τ$) contributed by the Galactic disk, and independently constructed electron density models for the Galactic halo and other galaxies' ISMs and halos that account for different galaxy morphologies, masses, densities, and strengths of turbulence. For source redshifts $0.5\leq z_{\rm s}\leq1$, an all-sky, isotropic FRB population has simulated values of $τ(1\rm~GHz)$ ranging from $\sim1~μ$s to $\sim2$ ms ($90\%$ confidence, observer frame) that are dominated by host galaxies, although $τ$ can be $\gg2$ ms at low Galactic latitudes. A population at $z_{\rm s}=5$ has $0.01\lesssimτ\lesssim300$ ms at 1 GHz ($90\%$ confidence), dominated by intervening galaxies. About $20\%$ of these high-redshift FRBs are predicted to have $τ>5$ ms at 1 GHz (observer frame), and $\gtrsim40\%$ of FRBs between $z_{\rm s}\sim0.5-5$ have $τ\gtrsim1$ ms for $ν\leq 800$ MHz. Our scattering predictions may be conservative if scattering from circumsource environments is significant, which is possible under specific conditions. The percentage of FRBs selected against from scattering could also be substantially larger than we predict if circumgalactic turbulence causes more small-scale ($\ll1$ au) density fluctuations than observed from nearby halos.
description: 27 pages, 16 figures, accepted to ApJ
Growth of Rényi Entropies in Interacting Integrable Models and the Breakdown of the Quasiparticle Picture
Creators: name: Bertini, Bruno
name: Klobas, Katja
name: Alba, Vincenzo
name: Lagnese, Gianluca
name: Calabrese, Pasquale
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Rényi entropies are conceptually valuable and experimentally relevant generalisations of the celebrated von Neumann entanglement entropy. After a quantum quench in a clean quantum many-body system they generically display a universal linear growth in time followed by saturation. While a finite subsystem is essentially at local equilibrium when the entanglement saturates, it is genuinely out-of-equilibrium in the growth phase. In particular, the slope of the growth carries vital information on the nature of the system's dynamics, and its characterisation is a key objective of current research. Here we show that the slope of Rényi entropies can be determined by means of a spacetime duality transformation. In essence, we argue that the slope coincides with the stationary density of entropy of the model obtained by exchanging the roles of space and time. Therefore, very surprisingly, the slope of the entanglement is expressed as an equilibrium quantity. We use this observation to find an explicit exact formula for the slope of Rényi entropies in all integrable models treatable by thermodynamic Bethe ansatz and evolving from integrable initial states. Interestingly, this formula can be understood in terms of a quasiparticle picture only in the von Neumann limit.
description: 19 pages, 6 figures (v3 final version - small typos corrected)
Tungsten vs Selenium as a potential source of kilonova nebular emission observed by Spitzer
Creators: name: Hotokezaka, Kenta
name: Tanaka, Masaomi
name: Kato, Daiji
name: Gaigalas, Gediminas
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Infrared emission lines arising from transitions between fine structure levels of heavy elements are expected to produce kilonova nebular emission. For the kilonova in GW170817, strong emission at 4.5 ${\rm μm}$ at late times was detected by the Spitzer Space Telescope but no source was detected at 3.6 ${\rm μm}$. This peculiar spectrum indicates that there exist strong line emitters around 4.5 ${\rm μm}$ and the absence of strong lines around 3.6 ${\rm μm}$. To model the spectrum we prepare a line list based on the selection rules in LS coupling from the experimentally calibrated energy levels in the NIST database. This method enables to generate the synthetic spectra with accurate line wavelengths. We find that the spectrum is sensitive to the abundance pattern whether or not the first r-process peak elements are included. In both cases, the synthetic spectra can match the observed data, leading to two possible interpretations. If the first peak elements are abundant a Se III line dominates the flux. If otherwise, W III with Os III, Rh III, and Ce IV can be the main sources. Observing nebular spectra for the future kilonovae in a wider wavelength range can provide more conclusive elemental identification.
description: 5 pages, 3 figures, submitted to MNRAS
D3.1 The Dynamic Capacity Building Methodology
Creators: name: Spagnoli, Francesca
name: Cerezo Soto, Alberto
name: Marucci, Arianna
Publisher: name: Zenodo
Year: 2023

description: As part of “WP3 Action-research experimentation and co-creation” and specifically falling under “Task 3.4 Dynamic Capacity Building (CB)”, the GILL project aims to bolster the community's knowledge of Gender Responsive Smart Innovation and Entrepreneurship (GRSIE) through a Dynamic Capacity Building Program with the final goal to fill the current educational gaps. Such a program is structured and flexible, intended to enhance the skills, knowledge, and consolidate the values and capabilities of individuals, organizations, or communities in effectively responding to their evolving needs, challenges, and opportunities.

This document aims to outline the activities undertaken in the initial 6 months of the GILL project for co-designing the Dynamic CB Program with the GILL consortium, including the 15 AOEs.
title: Ανάπτυξη τρισδιάστατου παιχνιδιού με turn-based σύστημα μάχης
title: Development of a 3D game with turn-based combat system
titleType: AlternativeTitle
Creators: name: Δρίβας, Εμμανουήλ
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: 3D παιχνίδι
subject: Turn-based
subject: 3D σύστημα μάχης
subject: Development 3D game
subject: Ανάπτυξη τρισδιάστατου παιχνιδιού
subject: Unity engine

description: Η παρούσα μεταπτυχιακή διατριβή έχει ως σκοπό τη δημιουργία και την περιγραφή ενός παιχνιδιού με σύστημα μάχης βασισμένο σε αλλαγές σειρών μεταξύ παίκτη και αντίπαλου του παιχνιδιού. Συμπεριλαμβάνεται η μελέτη, ανάλυση και επεξήγηση του τρόπου δημιουργίας και επίτευξης ενός καθαρού και απλουστευμένου κώδικα, ώστε να είναι εύκολος στην κατανόηση και την επεξεργασία του από άλλους σχεδιαστές, οι οποίοι θα έχουν τη δυνατότητα να κάνουν αλλαγές πάνω στον υπάρχοντα κώδικα. Η παραπάνω διαδικασία γίνεται κατανοητή με χρήση συγκεκριμένων προτύπων κατασκευής κώδικα. Με τον τρόπο αυτό δίνεται η ευκαιρία να παρατηρηθεί η χρήση τους σε άλλα συστήματα του παιχνιδιού. Χαρακτηριστικό παράδειγμα είναι το σύστημα διαλόγου του παιχνιδιού. Επιπλέον, αναλύονται και τα άλλα βασικά στοιχεία ενός καθαρού κώδικα: η τμηματοποίηση του κώδικα με τρόπο ώστε κάθε τμήμα να έχει διαφορετική αποστολή, και η δυνατότητα αποσφαλμάτωσης. Ο κώδικας έχει γραφτεί σε C-Sharp, ενώ το εργαλείο που χρησιμοποιείται για την συγγραφή του είναι το Visual Studio Code. Για την υλοποίηση της θεωρίας σε πρακτικό επίπεδο, γίνεται χρήση της πλατφόρμας κατασκευής παιχνιδιών Unity και για τα απλά γραφικά του παιχνιδιού χρησιμοποιείται το πολυεργαλείο Βlender. Επιπρόσθετα, περιγράφονται όλα τα εργαλεία και και τα πρότυπα που χρησιμοποιούνται στον κώδικα. Τέλος, παρατίθενται τα αποτελέσματα της συγκεκριμένης διατριβής για τις επιμέρους δομές του κώδικα για το κάθε σύστημα του παιχνιδιού ξεχωριστά, αλλά και συνολικά για την εφαρμογή.
Solvability of the Gleason problem on a class of bounded pseudoconvex domains
Creators: name: Clos, Timothy G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: We show that if a bounded pseudoconvex domain satisfies the solvability of the bounded $\bar{\partial}$ problem, then the ideal of bounded holomorphic functions vanishing at a point in the domain is finitely generated. We also prove a smooth analog of the main result for bounded pseudoconvex domains with a sufficiently smooth boundary and also consider the Bergman space case.
description: 9 pages. Comments welcome. Submitted
Revisiting Pushchino RRAT search using neural network
Creators: name: Tyul'bashev, S. A.
name: Pervukhin, D. V.
name: Kitaeva, M. A.
name: Tyul'basheva, G. E.
name: Brylyakova, E. A.
name: Chernosov, A. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The search for rotating radio transients (RRAT) at declination from -9o to +42o was carried out in the semi-annual monitoring data obtained on the Large Phased Array (LPA) radio telescope at the frequency of 111 MHz. A neural network was used to search for candidates. 4 new RRATs were detected, having dispersion measures (DM) 5-16 pc/cm3. A comparison with an earlier RRAT search conducted using the same data shows that the neural network reduced the amount of interference by 80 times, down to 1.3% of the initial amount of interferences. The loss of real pulsar pulses does not exceed 6% of their total number.
description: 7 pages, 2 figures, submitted to A&A