cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A new dynamics of electroweak symmetry breaking with classically scale invariance
Creators: name: Haba, Naoyuki
name: Ishida, Hiroyuki
name: Kitazawa, Noriaki
name: Yamaguchi, Yuya
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a new dynamics of the electroweak symmetry breaking in a classically scale invariant version of the standard model. The scale invariance is broken by the condensations of additional fermions under a strong coupling dynamics. The electroweak symmetry breaking is triggered by negative mass squared of the elementary Higgs doublet, which is dynamically generated through the bosonic seesaw mechanism. We introduce a real pseudo-scalar singlet field interacting with additional fermions and Higgs doublet in order to avoid massless Nambu-Goldstone bosons from the chiral symmetry breaking in a strong coupling sector. We investigate the mass spectra and decay rates of these pseudo-Nambu-Goldstone bosons, and show they can decay fast enough without cosmological problems. We further evaluate the energy dependences of the couplings between elementary fields perturbatively, and find that our model is the first one which realizes the flatland scenario with the dimensional transmutation by the strong coupling dynamics. Similarly to the conventional flatland model with Coleman-Weinberg mechanism, the electroweak vacuum in our model is meta-stable.
description: 10 pages, 1 figure
In silico screening and molecular dynamics simulation of deleterious PAH mutations responsible for phenylketonuria genetic disorder
Creators: name: Lopez, Andrea
name: Havranek, Brandon
name: Papadantonakis, George
name: Islam, Mohammad
Publisher: name: University of Illinois at Chicago
Year: 2023
Subjects: Uncategorized

description: Phenylketonuria (PKU) is a genetic disorder that if left untreated can lead to behavioral problems, epilepsy, and even mental retardation. PKU results from mutations within the phenylalanine-4-hydroxylase (PAH) gene that encodes for the PAH protein. The study of all PAH causing mutations is improbable using experimental techniques. In this study, a collection of in silico resources, sorting intolerant from tolerant, Polyphen-2, PhD-SNP, and MutPred were used to identify possible pathogenetic and deleterious PAH non-synonymous single nucleotide polymorphisms (nsSNPs). We identified two variants of PAH, I65N and L311P, to be the most deleterious and disease causing nsSNPs. Molecular dynamics (MD) simulations were carried out to characterize these point mutations on the atomic level. MD simulations revealed increased flexibility and a decrease in the hydrogen bond network for both mutants compared to the native protein. Free energy calculations using the MM/GBSA approach found that BH4, a drug-based therapy for PKU patients, had a higher binding affinity for I65N and L311P mutants compared to the wildtype protein. We also identify important residues in the BH4 binding pocket that may be of interest for the rational drug design of other PAH drug-based therapies. Lastly, free energy calculations also determined that the I65N mutation may impair the dimerization of the N-terminal regulatory domain of PAH.
Ab Initio Quantum Monte Carlo Simulations of the Uniform Electron Gas without Fixed Nodes II: Unpolarized Case
Creators: name: Dornheim, T.
name: Groth, S.
name: Schoof, T.
name: Hann, C.
name: Bonitz, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In a recent publication [S. Groth \textit{et al.}, PRB (2016)], we have shown that the combination of two novel complementary quantum Monte Carlo approaches, namely configuration path integral Monte Carlo (CPIMC) [T. Schoof \textit{et al.}, PRL \textbf{115}, 130402 (2015)] and permutation blocking path integral Monte Carlo (PB-PIMC) [T. Dornheim \textit{et al.}, NJP \textbf{17}, 073017 (2015)], allows for the accurate computation of thermodynamic properties of the spin-polarized uniform electron gas (UEG) over a wide range of temperatures and densities without the fixed-node approximation. In the present work, we extend this concept to the unpolarized case, which requires non-trivial enhancements that we describe in detail. We compare our new simulation results with recent restricted path integral Monte Carlo data [E. Brown \textit{et al}., PRL \textbf{110}, 146405 (2013)] for different energy contributions and pair distribution functions and find, for the exchange correlation energy, overall better agreement than for the spin-polarized case, while the separate kinetic and potential contributions substantially deviate.
Time and direction of arrival detection and filtering for imaging in strongly scattering random media
Creators: name: Borcea, Liliana
name: Papanicolaou, George
name: Tsogka, Chrysoula
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study detection and imaging of small reflectors in heavy clutter, using an array of transducers that emits and receives sound waves. Heavy clutter means that multiple scattering of the waves in the heterogeneous host medium is strong and overwhelms the arrivals from the small reflectors. Building on the adaptive time-frequency filter of [1], we propose a robust method for detecting the direction of arrival of the direct echoes from the small reflectors, and suppressing the unwanted clutter backscatter. This improves the resolution of imaging. We illustrate the performance of the method with realistic numerical simulations in a non-destructive testing setup.
description: 25 pages, 14 figures
title: The Imaginary Body: A Discussion of Female Body's Beauty Standards in China Using Imagination and Illustration
Creators: name: Ge, Jinglan
Publisher: name: Emily Carr University of Art and Design
Year: 2021
Subjects: subject: Feminism
valueUri: https://id.loc.gov/authorities/subjects/sh85047741
subject: Imagination
valueUri: https://id.loc.gov/authorities/subjects/sh85064466
subject: Illustrations (layout features)
valueUri: http://vocab.getty.edu/page/aat/300015578
subject: Body image
valueUri: https://id.loc.gov/authorities/subjects/sh85015249
subject: Self-perception
valueUri: https://id.loc.gov/authorities/subjects/sh85119775

description: “The Imaginary body” series of illustrations is the core visual output of my thesis research. It is a way for me to express, think and acquire knowledge. It is also a means for me to critically respond to the social problem that I am concerned about: the stereotyped and dogmatic beauty standards of women’s bodies in modern Chinese society; how these standards come into being under the political purpose of gender oppression; and how they seriously affect the establishment of the positive and benign self-identity of modern Chinese women. In the research process, the studies I involve include how women internalize social aesthetics and establish self-identity, sexual objectification, body-image, and transfeminism. Nourished by these background and secondary researches, I develop some conversation directions and prompts, with imagination as the core. With their help, I have some conversations with some close friends of mine (Chinese women of similar age). These dialogues provide me great inspirations so that I can take my illustration creation as a reflection to visually show and communicate my thinking and critical response around this research topic. The illustrations that emerge are fantastical, hybrid, grotesque and powerful. These monster bodies constitute an offence to the existing relationship between the individual and the collective with their peculiarity. Through these illustrations, I ask questions about how should we reflect on our relationship with society and ourselves, and how could individuals build stronger and more independent self-identity in the modern patriarchal heterosexual ruling system.
The enchanted forest : transcendent experience in forest environments
Creators: name: Williams., Kathryn Jane Hoffmann
Publisher: name: Monash University
Year: 2021

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.
Can Longitudinal Stiffeners Compensate for the Loss in Cyclic Shear Capacity in Steel Web-Opened Beams?
Creators: name: Ali, Yasmin
name: Elgammal, Ahmed
Publisher: name: Zenodo
Year: 2022
Subjects: subject: Structural engineering

description: This presentation is based on two research papers by the same authors, the first presented at the 2022 International Engineering Conference on Research and Innovation in Cairo, Egypt, and the second published in the Delta University Scientific Journal. The work explores the effectiveness of using longitudinal stiffeners to compensate for the loss in cyclic shear capacity in steel web-opened beams.

The presentation introduces the necessity of web openings in beams to accommodate cabling, services, and maintenance, explaining that these openings limit the web's ability to resist shear. Previous studies proposed various solutions to mitigate this limitation, such as curving the corners of the openings or installing reinforcing stiffeners around them. However, these studies mainly focused on the monotonic shear capacity of web-opened beams, with limited attention to their cyclic shear capacity. In response, this research investigates the addition of longitudinal stiffeners to the web panel adjacent to the opened one, aiming to mitigate web shear buckling and compensate for the loss in cyclic shear capacity.

The study involved the numerical analysis of nine specimens made of S275 steel using Ansys Workbench. The specimens were modeled and validated through comparison with experimental results. The numerical modeling incorporated both material and geometric nonlinearities, and the beams were cyclically loaded as cantilevers following AISC 341-16 requirements. The results indicated that all specimens failed due to web shear buckling. However, adding longitudinal stiffeners significantly enhanced their cyclic shear capacity. For specimens with smaller web openings, the stiffeners not only compensated for the loss in shear capacity but also increased the load-carrying capacity beyond that of a control specimen with a solid web.

The research concludes that small web openings do not significantly reduce cyclic shear capacity, while larger openings have a noticeable impact. Equipping the specimens with additional longitudinal stiffeners effectively mitigates this loss, particularly for openings up to a certain size. This technique is highlighted as a superior method to increase the cyclic shear capacity of cantilever steel beams, making it a valuable contribution to the field of structural engineering.
title: THE PASSAGE: Enquiry into the Ephemeral Absence of Social Construct During Transitions
Creators: name: Raiththa, Deepali
Publisher: name: Emily Carr University of Art and Design
Year: 2021
Subjects: subject: Performance art
valueUri: https://id.loc.gov/authorities/subjects/sh85099809
subject: Absence in art
valueUri: https://id.loc.gov/authorities/subjects/sh2019000118
subject: Ephemeral art
valueUri: https://id.loc.gov/authorities/subjects/sh2018003152
subject: Installations (Art)
valueUri: https://id.loc.gov/authorities/subjects/sh85066731

description: “In the universe, there are things that are known, and things that are unknown, and in between them, there are doors.” ― William Blake. This thesis support paper presents my artistic research on the ephemeral nature of absence in social constructs while relocating myself to new places. I am interrogating a fluid positionality that is continuously shifting, leading me to contextualise the research stance in the between and betwixt of Passage. I am examining the experience of passing from one place, condition, or stage to another and highlight the in-between space made visible through artwork produced with various methods and processes. Throughout, absence is indicated via aesthetics, materiality, and immateriality pointing to subtle boundaries between play and seriousness, the real and imaginary, the ephemeral and permanent. Themes of travel, constraint, absence, liminality, and human consciousness are explored through performative installations, architectural spaces, and different degrees of audience participation. The research generates a dialogue between performance, space, and time which involves bodily experience, live actions with mixed media installations, and time-based works. The choice of media and symbols revolve around various conceptual ideas inspired by academic and non-academic sources — contemporary art, spiritual texts, psychology, lucid visions while meditating — which become the artistic expression's metaphorical core. Anchoring in an auto-ethnographic methodology of resisting mastery, the research was conducted by allowing space for unknowns to reveal their contours through silent being and doing by not doing.
Dynamics of a double-stranded DNA segment in a shear flow
Creators: name: Panja, Debabrata
name: Barkema, Gerard T.
name: van Leeuwen, J. M. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the dynamics of a double-stranded DNA (dsDNA) segment, as a semiflexible polymer, in a shear flow, the strength of which is customarily expressed in terms of the dimensionless Weissenberg number Wi. Polymer chains in shear flows are well-known to undergo tumbling motion. When the chain lengths are much smaller than the persistence length, one expects a (semiflexible) chain to tumble as a rigid rod. At low Wi, a polymer segment shorter than the persistence length does indeed tumble as a rigid rod. However, for higher Wi the chain does not tumble as a rigid rod, even if the polymer segment is shorter than the persistence length. In particular, from time to time the polymer segment may assume a buckled form, a phenomenon commonly known as Euler buckling. Using a bead-spring Hamiltonian model for extensible dsDNA fragments, we first analyze Euler buckling in terms of the oriented deterministic state (ODS), which is obtained as the steady-state solution of the dynamical equations by turning off the stochastic (thermal) forces at a fixed orientation of the chain. The ODS exhibits symmetry breaking at a critical Weissenberg number Wi$_{\text c}$, analogous to a pitchfork bifurcation in dynamical systems. We then follow up the analysis with simulations and demonstrate symmetry breaking in computer experiments, characterized by a unimodal to bimodal transformation of the probability distribution of the second Rouse mode with increasing Wi. Our simulations reveal that shear can cause strong deformation for a chain that is shorter than its persistence length, similar to recent experimental observations.
description: 23 pages, 8 figures and one movie as ancillary file, to appear in Phys. Rev. E
Microvascular remodelling & angiogenic factors in asthma
Creators: name: Wignarajah., Dharshini
Publisher: name: Monash University
Year: 2021

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.
Gravitational billiards bouncing inside general domains -- foci curves and confined domains
Creators: name: Jaud, Daniel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Classical Physics (physics.class-ph)
subject: Optics (physics.optics)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37C83

description: A massive particle under the influence of a constant gravitational force that is bouncing inside an ideal reflecting mirror described by some function $f(x)$ is considered. For the associated flight trajectories we derive the parametric curves, named foci curves. All foci points of the parabolas for a given initial position and energy lie on these curves. From these foci curves the associated flight parabola envelopes are derived resulting, together with the mirror surface, in a confined domain for all possible particle trajectories in the non-periodic orbit case. The general results are briefly discussed and visualized for three concrete mirror surfaces.
description: 14 pages, 9 figures
The formation of Al-Mn-Fe intermetallic compounds and carbides in AZ91 melted in Fe-C crucibles
Creators: name: Peng, Liuqing
Publisher: name: Imperial College London
Year: 2020

description: This thesis investigates the formation of carbides and Al-Mn-Fe intermetallic compounds (IMCs) in liquid Mg-9Al-0.7Zn-0.2Mn (AZ91, wt.%) held in uncoated steel/cast iron crucibles at various temperatures. The focus is on (i) how liquid AZ91 reacts with Fe-C crucibles to produce carbides in AZ91, (ii) how Al-Mn-Fe IMCs are influenced by different Fe content picked up from steel crucibles, and (iii) how Al-Mn-Fe IMCs settle in liquid AZ91. The formation of carbides has been investigated during reactions between solid Fe-xC alloys (x = 0-3.6 wt.%) and liquid Mg-9Al-0.7Zn-0.2Mn-0.001Fe (wt.%, AZ91) at 700-800 °C. Two ternary carbides have been identified in the reaction zone: T2-Al2MgC2 and κ-AlFe3C. The T2-Al2MgC2 carbide was found in the bulk as settled particles at the bottom of crucible, and within the Al-Mn-Fe reaction layer as thin plates; while the κ-AlFe3C formed as a thin layer between the B2-layer and the steels as a diffusion barrier for Al. α-Mg has been found nucleated on the settled T2-Al2MgC2 carbides. Similar experiments were performed to investigate the influence of Fe content in the melt on the formation of Al-Mn-Fe IMCs using Fe-0.2C crucibles and holding temperatures in the range 640-850 °C. Four types of Al-Mn-Fe IMCs have been identified in the IMC particles: B2-Al(Fe,Mn) as the core, Al8Mn5 as a shell around the B2-core, Al5Fe2 as a thin layer on the B2-core, and Al11Mn4 as plates growing on the surface of particles. The B2-core gradually became exposed to the α-Mg at higher Fe content. Reproducible crystallographic orientation relationships were found between all four Al-Mn-Fe IMCs. The settling behaviour of IMC particles and sludge formation were directly observed by synchrotron radiography and quantitatively compared with Stokes’ law. During solidification, interactions between the settling Al8Mn5 particles with entrained oxide films were also observed and discussed.
Associations between sexual beliefs and couples' sexual well-being
Creators: name: Oliveira, Beatriz
name: Tavares, Inês
name: Nobre, Pedro
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Cognitive Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: couple; dyad; APIM; sexual belief; sexual well-being; sexual satisfaction; sexual function; sexual distress

description: This dyadic study examines the association between an individual’s sexual beliefs – i.e., one’s beliefs about aspects of sexuality that are based on cultural views and previous sexual experience – and their own and their partner’s sexual well-being. Sex and gender diverse couples from the community and online sources, across Portugal, will be recruited to participate in a cross-sectional study that involves completing an online questionnaire. Individuals will be asked to complete the survey independently from their partners. Data collection for this study is ongoing and is being conducted online so that participants can respond at the time and place they deem appropriate, increasing the accessibility of participation and the potential diversity of participants, as well as minimizing possible socially desirable responses.
Searching for double-peak and doubly broken gravitational-wave spectra from Advanced LIGO-Virgo's first three observing runs
Creators: name: Yu, Wang-Wei
name: Wang, Shao-Jiang
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The current LIGO-Virgo observing run has been pushing the sensitivity limit to touch the stochastic gravitational-wave backgrounds (SGWBs). However, no significant detection has been reported to date for any single dominated source of SGWBs with a single broken-power-law (BPL) spectrum. Nevertheless, it could equally well escape from existing Bayesian searches from, for example, two comparable dominated sources with two separate BPL spectra (double-peak case) or a single source with its power-law behavior in the spectrum broken twice (doubly broken case). In this paper, we put constraints on these two cases but specifically for the model with cosmological first-order phase transitions from Advanced LIGO-Virgo's first three observing runs. We found strong negative evidence for the double-peak case and hence place 95\% C.L. upper limits $Ω_\mathrm{BPL,1}<5.8\times10^{-8}$ and $Ω_\mathrm{BPL,2}<4.4\times10^{-8}$ on the two BPL spectra amplitudes with respect to the unresolved compact binary coalescence (CBC) amplitude $Ω_\mathrm{CBC}<5.6\times10^{-9}$. We further found weak negative evidence for the doubly broken case and hence place 95\% C.L. upper limit $Ω_\mathrm{DB}<1.2\times10^{-7}$ on the overall amplitude of the doubly broken spectrum with respect to $Ω_\mathrm{CBC}<6.0\times10^{-9}$. In particular, the results from the double-peak case have marginally ruled out the strong super-cooling first-order phase transitions at LIGO-Virgo band.
description: v1, 5 pages + references, 5 figures, 1 table; v2, 11 pages, 6 figures, 1 table, version accepted for publication in Physical Review D; v3, to match the published version
Integrity Constraints for General-Purpose Knowledge Bases
Creators: name: Cruz-Filipe, Luís
name: Nunes, Isabel
name: Schneider-Kamp, Peter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Integrity constraints in databases have been studied extensively since the 1980s, and they are considered essential to guarantee database integrity. In recent years, several authors have studied how the same notion can be adapted to reasoning frameworks, in such a way that they achieve the purpose of guaranteeing a system's consistency, but are kept separate from the reasoning mechanisms. In this paper we focus on multi-context systems, a general-purpose framework for combining heterogeneous reasoning systems, enhancing them with a notion of integrity constraints that generalizes the corresponding concept in the database world.
description: FoIKS 2016
A computational model for group recall
Creators: name: Angne, Hemali
Publisher: name: No Publisher Supplied
Year: 2023

description: Within collaborative memory literature, the main phenomenon of interest is collaborative inhibition. This refers to the unexpected finding that when a group of people work together to recall information, they tend to remember fewer words than if each person had worked alone and their individual responses were combined removing redundancies. Although the effect is robustly observed for smaller group sizes, Gates et al. (2021) in a recent study found that the phenomenon does not scale up to larger groups. The present work takes the existing context maintenance and retrieval (CMR) model of free recall and tries to see if it provides the resources for predicting both collaborative inhibition and the observed group size effect. We try to research the underlying mechanisms of collaborative recall using our proposed modified CMR model to get insights into how cues can affect people’s memories.
Studies on the role of leptin in sympathetic nervous function and energy balance
Creators: name: Wiesner., Glen H.
Publisher: name: Monash University
Year: 2021

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.
Αναπαραγωγή του έργου της πνευματικής ιδιοκτησίας για ιδιωτική χρήση και εύλογη αμοιβή
Creators: name: Μπάκος, Δημήτριος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Περιορισμοί του περιουσιακού δικαιώματος
Αναπαραγωγή για ιδιωτική χρήση
Εύλογη αμοιβή
Limitations of the economic right
Reproduction for private use
Reasonable remuneration

description: Σκοπός της διπλωματικής εργασίας είναι η μελέτη του περιορισμού της αναπαραγωγής για ιδιωτική χρήση του έργου της πνευματικής ιδιοκτησίας. Αρχικώς, αναλύονται ορισμένα γενικά στοιχεία περί των περιορισμών των περιουσιακών δικαιωμάτων του δημιουργού, όπως η σχέση τους με το διεθνές και το ενωσιακό δίκαιο, οι έννοιες της νόμιμης και της αναγκαστικής άδειας, η ερμηνεία των περιορισμών κ.λ.π. Ιδιαίτερη αναφορά γίνεται και στο τεστ των τριών σταδίων. Στη συνέχεια, οριοθετείται η έννοια της αναπαραγωγής για ιδιωτική χρήση και αναλύονται η προϋπόθεση του νομίμως δημοσιευμένου έργου και τα όρια της ιδιωτικής αναπαραγωγής, όπως καθορίζονται στο ά. 18 παρ. 2 Ν. 2121/1993. Επίσης, επιχειρείται η έκθεση της προβληματικής όσον αφορά τη σχέση του περιορισμού της αναπαραγωγής για ιδιωτική χρήση με το διαδίκτυο. Αντικείμενο έρευνας αποτελεί η έννοια της εύλογης αμοιβής, ιδίως σε συσχέτιση με την έννοια της δίκαιης αποζημίωσης. Αναδεικνύονται οι σχετικοί προβληματισμοί αναφορικά με καίρια ζητήματα που άπτονται της εύλογης αμοιβής, όπως είναι τα τεχνικά μέσα που υπόκεινται σε αυτή, το ύψος, καθώς και οι οφειλέτες και οι δικαιούχοι της εύλογης αμοιβής. Τέλος, παρατίθενται συμπερασματικές παρατηρήσεις
description: The aim of the present thesis is to study the limitation of the reproduction for private use of the copyright work. Initially, some general elements about the limitations of the economic rights of the author are analyzed, such as their relationship with the international and EU law, the concepts of legal and compulsory permission, the interpretation of limitations, etc. Special mention of the three-step test is also made. Subsequently, the concept of reproduction for private use is defined and the condition of lawfully published work and the limits of private reproduction, as defined in a. 18 par. 2 Law 2121/1993, are analyzed. Furthermore, an exposure of the relationship of the restriction of reproduction for private use to the Internet is attempted. The concept of reasonable remuneration is also an object of research, especially in relation to the concept of fair compensation. The relevant concerns regarding key issues related to the reasonable remuneration are highlighted, such as the technical means that subject to it, the amount, as well as the debtors and the beneficiaries of the reasonable remuneration. Finally, concluding observations are listed
Topographical pathways guide chemical microswimmers
Creators: name: Simmchen, Juliane
name: Katuri, Jaideep
name: Uspal, William E.
name: Popescu, Mihail N.
name: Tasinkevych, Mykola
name: Sanchez, Samuel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Achieving control over the directionality of active colloids is essential for their use in practical applications such as cargo carriers in microfluidic devices. So far, guidance of spherical Janus colloids was mainly realized using specially engineered magnetic multilayer coatings combined with external magnetic fields. Here, we demonstrate that step-like sub-micron topographical features can be used as reliable docking and guiding devices for chemically active spherical Janus colloids. For various topographic features (stripes, squares or circular posts) docking of the colloid at the feature edge is robust and reliable. Furthermore, the colloids move along the edges for significantly long times, which systematically increase with fuel concentration. The observed phenomenology is qualitatively captured by a simple continuum model of self-diffusiophoresis near confining boundaries, indicating that the chemical activity and associated hydrodynamic interactions with the nearby topography are the main physical ingredients behind the observed behaviour.
description: 18 pages, 12 figures
Comment on "A study of phantom scalar field cosmology using Lie and Noether symmetries" [Int. J. Mod. Phys. D 25 (2016) 1650051]
Creators: name: Paliathanasis, Andronikos
name: Basilakos, Spyros
name: Tsamparlis, Michael
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the recent results of \ [Int. J. Mod. Phys. D 25 (2016) 1650051] on the application of Lie/Noether symmetries in scalar field cosmology are well-known in the literature while the problem could have been solved easily under a coordinate transformation. That follows from the property, that the admitted group of invariant transformations of dynamical system is independent on the coordinate system.
description: 3 pages, to be published in IJMPD
Optical vortex array in spatially varying lattice
Creators: name: Kapoor, Amit
name: Kumar, Manish
name: Senthilkumaran, P.
name: Joseph, Joby
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present an experimental method based on a modified multiple beam interference approach to generate an optical vortex array arranged in a spatially varying lattice. This method involves two steps which are: numerical synthesis of a consistent phase mask by using two-dimensional integrated phase gradient calculations and experimental implementation of produced phase mask by utilizing a phase only spatial light modulator in an optical 4f Fourier filtering setup. This method enables an independent variation of the orientation and period of the vortex lattice. As working examples, we provide the experimental demonstration of various spatially variant optical vortex lattices. We further confirm the existence of optical vortices by formation of fork fringes. Such lattices may find applications in size dependent trapping, sorting, manipulation and photonic crystals.
description: 6 pages, 3 figures
A study of the effects of clonidine and related compounds on venous haemodynamics
Creators: name: Widdop., Robert Edward
Publisher: name: Monash University
Year: 2021

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.
D1.2.3 Project Management Plan
Creators: name: Rovira, Antonio
name: Barbero, Rubén
name: Enríquez, Juan
Publisher: name: Zenodo
Year: 2023

description: This deliverable updates the current work plan and the schedule of the ASTEP project, including the latest information in the amendment AMD-884411-22. The Gantt chart, the Pert chart and the Work Breakdown Structure of the project are presented, including the schedule of Tasks and Subtasks, their responsible partner and person, the related deliverables and their dependencies.
 The Project Management Plan is a fundamental guide for all the partners within the consortium, as project contributors can find important information for the day-to-day work related with the general structure of the project work plan and important information regarding the data flow and links between the different WPs, Tasks, Subtasks, Deliverables and Milestones.
 The report is divided into two parts. The first one focuses on the overall work plan, which is detailed at Task level. The aim of this part is to update and complete the information contained in the Grant Agreement, including the responsible partner and person for each Task, and to analyse the dependencies between Tasks, Deliverables and Milestones. The information is given by tables, an overall Gantt chart and an overall Pert chart.
 The second part of the report focuses on the detailed Work Breakdown Structure of the project, including the definition of Subtasks that meet the overall dependencies previously detected. Also, the responsible partner and person for each Subtask are defined, as well as the schedule for the Subtasks and the links between them. The information is presented by means of Tables, Gantt charts for the different Work-Packages and a comprehensive Pert Chart for the whole project.
 Therefore, the analysis of dependencies was done at two levels: one considering overall flows (first part of the report) and another one detailing links between Subtasks (second part). The analyses at the beginning of the project led to a schedule slightly different to that programmed in the Grant Agreement, with the aim of extending the time for critical activities like commissioning and decommissioning and enlarging testing activities. At M18, despite the deviations over the first PMP, the project was in the position of starting the second period with some additional time for the testing activities at laboratory without incurring in delays in the testing activities at the end-users sites.
 During the execution of the second reporting period (from M18 to M36) some issues in the supply chain and bad weather in one of the demo-sites have caused significant delays. A new timeline has been requested and approved by the EC with the signature of the amendment AMD-884411-22. The dates presented in this new release of the Project Management Plant has been accordingly updated.
EduHPC 2023 Lightning Talks
Creators: name: Alexander, Michael
name: Bhowmick, Sanjukta
name: Bogale, Befikir
name: Diaz, Gilberto
name: Elster, Anne C.
name: Ellsworth, Danielle A.
name: Hernandez, Carlos Jaime Barrios
name: Jaffe, Evan
name: Marquez, Jack
name: Melton, Allison
name: Pandey, Aashish
name: Parete-Koon, Suzanne
name: Tan, Nigel
name: Taufer, Michela
name: Vergara, Verónica G. Melesse
name: Whitnah, Lauren
name: Thiruvathukal, George K.
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 460804
subject: Computing education
classificationCode: 460607
subject: High performance computing

description: This is a collection of peer-reviewed lightning talks from EduHPC 2023.
Finite temperature fermion condensate, charge and current densities in a (2+1)-dimensional conical space
Creators: name: Bellucci, S.
name: de Mello, E. R. Bezerra
name: Bragança, E.
name: Saharian, A. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We evaluate the fermion condensate and the expectation values of the charge and current densities for a massive fermionic field in (2+1)-dimensional conical spacetime with a magnetic flux located at the cone apex. The consideration is done for both irreducible representations of the Clifford algebra. The expectation values are decomposed into the vacuum expectation values and contributions coming from particles and antiparticles. All these contributions are periodic functions of the magnetic flux with the period equal to the flux quantum. Related to the non-invariance of the model under the parity and time-reversal transformations, the fermion condensate and the charge density have indefinite parity with respect to the change of the signs of the magnetic flux and chemical potential. The expectation value of the radial current density vanishes. The azimuthal current density is the same for both the irreducible representations of the Clifford algebra. It is an odd function of the magnetic flux and an even function of the chemical potential. The behavior of the expectation values in various asymptotic regions of the parameters are discussed in detail. In particular, we show that for points near the cone apex the vacuum parts dominate. For a massless field with zero chemical potential the fermion condensate and charge density vanish. Simple expressions are derived for the part in the total charge induced by the planar angle deficit and magnetic flux. Combining the results for separate irreducible representations, we also consider the fermion condensate, charge and current densities in parity and time-reversal symmetric models. Possible applications to graphitic nanocones are discussed.
description: 30 pages and 9 figures
Islands of shape coexistence: theoretical predictions and experimental evidence
Creators: name: Martinou, Andriana
name: Bonatsos, Dennis
name: Peroulis, S. K.
name: Karakatsanis, K. E.
name: Mertzimekis, T. J.
name: Minkov, N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Parameter-free theoretical predictions based on a dual shell mechanism within the proxy-SU(3) symmetry of atomic nuclei, as well as covariant density functional theory calculations using the DDME2 functional indicate that shape coexistence (SC) based on the particle-hole excitation mechanism cannot occur everywhere on the nuclear chart, but is restricted on islands lying within regions of 7-8, 17-20, 34-40, 59-70, 96-112, 146-168 protons or neutrons. Systematics of data for even-even nuclei possessing K=0 (beta) and K=2 (gamma) bands support the existence of these islands, on which shape coexistence appears whenever the K=0 bandhead 0_2^+ and the first excited state of the ground state band 2_1^+ lie close in energy, with nuclei characterized by 0_2^+ lying below the 2_1^+ found in the center of these islands. In addition a simple theoretical mechanism leading to multiple shape coexistence is briefly discussed.
description: 14 pages, 3 tables, 5 figures
Monogamy Relation in No-disturbance Theories
Creators: name: Jia, Zhih-Ahn
name: Wu, Yu-Chun
name: Guo, Guang-Can
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The monogamy is a fundamental property of Bell nonlocality and contextuality. In this article, we studied the $n$-cycle noncontextual inequalities and generalized CHSH inequalities in detail and found the sufficient conditions for those inequalities to be hold. According to those conditions, we provide several kind of tradeoff relations: monogamy of generalized Bell inequalities in non-signaling framework, monogamy of cycle type noncontextual inequalities and monogamy between Bell inequality and noncontextual inequality in general no-disturbance framework. At last, some generic tradeoff relations of generalized CHSH inequalities for $n$-party physical systems, which are beyond one-to-many scenario, are discussed.
The proxy-SU(3) symmetry in atomic nuclei
Creators: name: Bonatsos, Dennis
name: Martinou, Andriana
name: Peroulis, S. K.
name: Mertzimekis, T. J.
name: Minkov, N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The microscopic origins and the up-to-now predictions of the proxy-SU(3) symmetry model of atomic nuclei are reviewed. Starting from the experimental evidence for the special role played by nucleon pairs with maximal spatial overlap, the proxy-SU(3) approximation scheme is introduced and its validity is demonstrated through Nilsson model calculations, as well as through its connection to the spherical shell model. The major role played by highest weight irreducible representations of SU(3) in shaping up the nuclear properties is pointed out, resulting in parameter-free predictions of the collective variables beta and gamma for even-even nuclei, in the explanation of the dominance of prolate over oblate shapes in the ground states of even-even nuclei, in the prediction of a shape/phase transition from prolate to oblate shapes below closed shells, as well as in the prediction of specific islands on the nuclear chart in which shape coexistence is confined. Further developments within the proxy-SU(3) scheme are outlined.
description: 27 pages, 9 figures, 8 tables
NOVEL ULTRA HIGH TEMPERATURE MATERIAL PROCESSING, CHARACTERIZATION, AND MODELING
Creators: name: Peterson, Glenn R
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Composite and hybrid materials

description: For many applications within the defense, aerospace, and electricity-producing industries, available material choices for high-performance devices that fulfill necessary requirements are limited. Choosing a metallic material or a ceramic material may be optimal for only some of the required properties. For instance, choosing a metal may optimize ductility but compromise oxidation resistance, yield strength, or creep resistance. Of potential interest, ceramic-metal (cermet) composites can address several fundamental concerns such as high temperature mechanical toughness and stiffness and oxidation/corrosion resistance. However, cost-effective, scalable manufacturing of complex-shaped, high-temperature cermets can be challenging. A cermet of interest is niobium and yttrium oxide, Y2O3. Both materials exhibit high melting points with similar coefficients of thermal expansion. Basic thermodynamic calculations suggest that these materials are chemically compatible, and that Y2O3/Nb cermets may be generated by reactive melt infiltration using the patented Displacive Compensation of Porosity (DCP) process. With the DCP process, a liquid fills a porous perform, and a displacement reaction occurs to produce products of larger solid volume. This reaction yields the cermet of interest, formed in a reduced-stress condition, while maintaining a generally near net shape and high relative density. In order to get to the point of designing cermet components for various applications, a focus of this work has been to create a Y2O3/Nb composite by hot pressing powders at high temperatures at the predicted stoichiometric ratios, and then characterizing the thermal and mechanical properties. The reduction reaction between liquid yttrium and solid niobium (IV) oxide (NbO2) was then characterized to evaluate kinetic mechanisms affecting the reaction rate which is necessary for future DCP-based cermet component manufacturing. Lastly, the mechanical behavior of this cermet was modeled and compared to another cermet processed using liquid metal infiltration using a temperature-dependent elasto-visco-plastic self-consistent model. The effects of cooling from processing temperatures, as well as thermally cycling of these cermets, were quantified. As high temperature experiments can be time intensive with high costs, it is advantageous to have a computationally efficient, desktop design tool to quantify the impacts of changing processing and use conditions on material performance.
The SPHERE view of the planet-forming disk around HD100546
Creators: name: Garufi, Antonio
name: Quanz, Sascha P.
name: Schmid, Hans Martin
name: Mulders, Gijs D.
name: Avenhaus, Henning
name: Boccaletti, Anthony
name: Ginski, Christian
name: Langlois, Maud
name: Stolker, Tomas
name: Augereau, Jean-Charles
name: Benisty, Myriam
name: Lopez, Bruno
name: Dominik, Carsten
name: Gratton, Raffaele
name: Henning, Thomas
name: Janson, Markus
name: Menard, Francois
name: Meyer, Michael R.
name: Pinte, Christophe
name: Sissa, Elena
name: Vigan, Arthur
name: Zurlo, Alice
name: Bazzon, Andreas
name: Buenzli, Esther
name: Bonnefoy, Mickael
name: Brandner, Wolfgang
name: Chauvin, Gael
name: Cheetham, Anthony
name: Cudel, Maxime
name: Desidera, Silvano
name: Feldt, Markus
name: Galicher, Raphael
name: Kasper, Markus
name: Lagrange, Anne-Marie
name: Lannier, Justine
name: Maire, Anne-Lise
name: Mesa, Dino
name: Mouillet, David
name: Peretti, Sebastien
name: Perrot, Clement
name: Salter, Graeme
name: Wildi, Francois
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We image with unprecedented spatial resolution and sensitivity disk features that could be potential signs of planet-disk interaction. Two companion candidates have been claimed in the disk around the young Herbig Ae/Be star HD100546. Thus, this object serves as an excellent target for our investigation of the natal environment of giant planets. We exploit the power of extreme adaptive optics operating in conjunction with the new high-contrast imager SPHERE to image HD100546 in scattered light. We obtain the first polarized light observations of this source in the visible (with resolution as fine as 2 AU) and new H and K band total intensity images that we analyze with the Pynpoint package. The disk shows a complex azimuthal morphology, where multiple scattering of photons most likely plays an important role. High brightness contrasts and arm-like structures are ubiquitous in the disk. A double-wing structure (partly due to ADI processing) resembles a morphology newly observed in inclined disks. Given the cavity size in the visible (11 AU), the CO emission associated to the planet candidate 'c' might arise from within the circumstellar disk. We find an extended emission in the K band at the expected location of 'b'. The surrounding large-scale region is the brightest in scattered light. There is no sign of any disk gap associated to 'b'.
description: Accepted by A&A. 13 pages, 5 figures
Tests of sunspot number sequences: 4. Discontinuities around 1946 in various sunspot number and sunspot group number reconstructions
Creators: name: Lockwood, Mike
name: Owens, Mathew J.
name: Barnard, Luke A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use 5 test data series to quantify putative discontinuities around 1946 in 5 annual-mean sunspot number or group number sequences. The series tested are: the original and new versions of the Wolf/Zurich/International sunspot number composite [$R_{ISNv1}$ and $R_{ISNv2}$] ; the corrected version of $R_{ISNv1}$ [$R_C$]; the backbone group number [$R_{BB}$]; and the group number composite [$R_{UEA}$]. The test data are: the group number $N_G$ and total sunspot area $A_G$ from the RGO photoheliographic data; the CaK index from re-analysis of MWO CaII K spectroheliograms; the group number from the MWO sunspot drawings, $N_{MWO}$; and ionospheric critical frequencies at Slough [$foF2$]. The test data all vary with sunspot numbers, in some cases non-linearly. Tests use both before-and-after fit-residual comparison and correlation methods, applied to intervals iterated to minimise errors and eliminate the effect of the discontinuity date. It is not assumed that the correction required is by a constant factor, nor even linear in sunspot number. A non-linear correction is required by $R_C$, $R_{BB}$ and $R_{ISNv1}$, but not by $R_{ISNv2}$ or $R_{UEA}$. The test datasets give very similar results in all cases. By multiplying the probability distribution functions together we obtain the optimum correction for each data series that must be applied to pre-discontinuity data to make them consistent with the post-discontinuity data. It is shown that, on average, values for 1932-1943 are too small (relative to later values) by about 12.3% for $R_{ISNv1}$ but are too large for $R_{ISNv2}$ and $R_{BB}$ by 3.8% and 5.2%. The correction applied to generate $R_C$ from $R_{ISNv1}$ reduces this average factor to 0.5% but does not remove the non-linear variation, and other errors remain uncorrected. A test is provided by $R_{UEA}$, which is identical to the RGO $N_G$ values over the interval used.
description: In press with Solar Physics