cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
de Sitter vacua and supersymmetry breaking in six-dimensional flux compactifications
Creators: name: Buchmuller, Wilfried
name: Dierigl, Markus
name: Ruehle, Fabian
name: Schweizer, Julian
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider six-dimensional supergravity with Abelian bulk flux compactified on an orbifold. The effective low-energy action can be expressed in terms of N=1 chiral moduli superfields with a gauged shift symmetry. The D-term potential contains two Fayet-Iliopoulos terms which are induced by the flux and by the Green-Schwarz term canceling the gauge anomalies, respectively. The Green-Schwarz term also leads to a correction of the gauge kinetic function which turns out to be crucial for the existence of Minkowski and de Sitter vacua. Moduli stabilization is achieved by the interplay of the D-term and a nonperturbative superpotential. Varying the gauge coupling and the superpotential parameters, the scale of the extra dimensions can range from the GUT scale down to the TeV scale. Supersymmetry is broken by F- and D-terms, and the scale of gravitino, moduli, and modulini masses is determined by the size of the compact dimensions.
description: 28 pages, 3 figures, 2 tables
Framing migrant workers: news media and discursive construction of citizenship in transitional China
Creators: name: Huang, Dianlin
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Domestic migration in China, with massive multitudes of migrant peasant workers and the myriads of social challenges it has brought about, has received attention not only from the public and official policy bodies but also from various fields of academic concern, including migration and media studies. Starting from an interdisciplinary perspective, the topic of this PhD thesis is to examine the frames and framing process of issues regarding internal migrant workers by various major actors/organs - including the Chinese Party-state, market agents, intellectuals and specialists, social activists, media actors, migrant workers themselves and others - through power-laden discursive means in the media. -- The main research questions ask how the Party-state has reconstructed and legitimized its definitions of differentiated citizenship categorizations in the reform period, in a form of rupture as well as continuity with the past revolutionary era; specifically how the elements of social exclusion and inclusion, identity, discrimination, deprivation, and oppressive apparatus, surrounding hukou (household registration system), the core institution of citizenship differentiation and social mobility control, have been rationalized and contested; regarding the concrete aspects of citizenship of migrant workers, including aspects of the civil, the social, the political and the cultural, how the different social actors, under the overarching supervision of the Party-state's policies and ideological line, have interacted and contested the discursive boundaries of these issues, appealed to public resonance, and promoted their different interests, in a market-propaganda-driven media sphere. Through the case study of the migrant issue in China, the paper ultimately aims to examine the consequences of marketization without fundamental political changes in terms of public discursive contestation, and its meaning for citizenship conditions of marginalized groups in China. -- Methodologically, a multi-level framework of analysis is adopted. First, a constructivist approach of framing analysis is used as a general means to structure the discursive contesting processes about several sub-issues of migrant workers. Second, a historical institutional approach serves as a contextualizing tool to locate all of these discursive struggles and specific discursive opportunities for different actors-speakers. Third, in terms of methods, critical discourse analysis of media texts and policy documents, and in-depth interviews with media practitioners and specialists of the field of migrant worker issues, are the two main techniques of data collection and analysing, penetrating case studies that focus on process tracing of several landmark social events about migrant workers in recent years. They will be used to examine the discursive structures and frames and the background information of these cases respectively.
The use of GIS on large scale infrastructural projects in Ireland. Excavation, post-excavation and publication
Creators: name: Toscano, Maurizio
Publisher: name: Zenodo
Year: 2008
Subjects: GIS
Archeology
Ireland
Databases

description: This presentation describes the use of GIS on large scale infrastructural projects in Ireland, by Eachtra Archaeological Projects during the period 2007-2008. The presentation is full of examples from the excavation, post-excavation and publication phases.
Dynamic Phases, Clustering, and Lane Formation for Driven Disk Systems in the Presence of Quenched Disorder
Creators: name: Yang, Y.
name: McDermott, D.
name: Reichhardt, C. J. Olson
name: Reichhardt, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We numerically examine the dynamic phases and pattern formation of two-dimensional monodisperse repulsive disks driven over random quenched disorder. We show that there is a series of distinct dynamic regimes as a function of increasing drive, including a clogged or pile-up phase near depinning, a homogeneous disordered flow state, and a dynamically phase separated regime consisting of high density crystalline regions surrounded by a low density of disordered disks. At the highest drives the disks arrange into one-dimensional moving lanes. The phase separated regime has parallels with phase separation observed in active matter systems, and arises in the disk system due to the combination of nonequilibrium fluctuations and density dependent mobility. We discuss how this system exhibits pronounced differences from previous studies of driven particles moving over random substrates where the particles, such as superconducting vortices or electron crystals, have longer range repulsive interactions, and where dynamical phase separation and strong one-dimensional moving chain effects are not observed. The system we consider could be realized experimentally using sterically interacting colloids driven over random pinning arrays or quasi-two-dimensional granular matter flowing over rough landscapes.
description: 11 pages, 14 png figures
Reconstruction of Solar Subsurfaces by Local Helioseismology
Creators: name: Kosovichev, Alexander G.
name: Zhao, Junwei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Local helioseismology has opened new frontiers in our quest for understanding of the internal dynamics and dynamo on the Sun. Local helioseismology reconstructs subsurface structures and flows by extracting coherent signals of acoustic waves traveling through the interior and carrying information about subsurface perturbations and flows, from stochastic oscillations observed on the surface. The initial analysis of the subsurface flow maps reconstructed from the 5 years of SDO/HMI data by time-distance helioseismology reveals the great potential for studying and understanding of the dynamics of the quiet Sun and active regions, and the evolution with the solar cycle. In particular, our results show that the emergence and evolution of active regions are accompanied by multi-scale flow patterns, and that the meridional flows display the North-South asymmetry closely correlating with the magnetic activity. The latitudinal variations of the meridional circulation speed, which are probably related to the large-scale converging flows, are mostly confined in shallow subsurface layers. Therefore, these variations do not necessarily affect the magnetic flux transport. The North-South asymmetry is also pronounced in the variations of the differential rotation ("torsional oscillations"). The calculations of a proxy of the subsurface kinetic helicity density show that the helicity does not vary during the solar cycle, and that supergranulation is a likely source of the near-surface helicity.
description: 17 pages, 10 figures, in "Cartography of the Sun and the Stars", Editors: Rozelot, Jean-Pierre, Neiner, Coralie
An evaluation of the acceptability and efficacy of remote treatments for obsessive-compulsive disorder
Creators: name: Wootton, Bethany May
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Obsessive-compulsive disorder (OCD) is a common, chronic, and disabling anxiety disorder. Although effective psychological treatments exist they are not widely available, and most people seeking treatment for OCD do not receive an evidence-based intervention. The remote delivery of psychological treatments represents one strategy with considerable potential for improving access to treatments for people with OCD, particularly for those who are geographically isolated. However, only a small number of studies have investigated the acceptability and efficacy of remote treatments for people with OCD. The aims of this thesis were to contribute to the literature on remote treatment of OCD by exploring the following questions: 1) Are remote treatments acceptable to people with OCD (Study I)? 2) Is internetadministered cognitive and behavioural treatment (iCBT) for OCD efficacious (Study II)? 3) Is iCBT as effective as bibliotherapy-administered cognitive and behavioural treatment (Study III)? 4) How much therapist time is required in remote treatments to obtain positive outcomes (Study III)? 5) Do demographic and clinical characteristics predict outcome of remote treatment (Study IV)? -- The results of Study I, an online survey of people with elevated symptoms of OCD, indicated that internet-administered treatment was acceptable and that people seeking online treatment were not significantly different from those seeking face-to-face treatment or from those with OCD in a national epidemiological survey. The results of Study II, a pilot study exploring the efficacy of iCBT for OCD using an open-trial design, indicated iCBT was efficacious, with large effect sizes observed from pre-treatment to post-treatment, which were maintained at follow-up. The results of Study III, a three-parallel group randomised controlled trial comparing iCBT vs. bibliotherapy vs. waitlist control, indicated both iCBT and bibliotherapy were superior to waitlist, with no significant differences between treatment groups, although small sample size limits the generalisability of these results. Study III also revealed that large effect sizes can be obtained in iCBT treatment when contact is limited to once a week, although greater effects were found from more frequent contact. Study IV, which involved an analysis of the data from Study II and III failed to identify any reliable predictors of treatment outcome. -- In summary, these studies indicate that remote treatment of OCD, delivered as either iCBT or bibliotherapy, is both efficacious and acceptable to people with OCD. Replication and extension of these findings by other research teams is required. The results of the studies in this thesis provide further evidence to indicate that remote treatments have considerable potential in improving access to acceptable, evidence-based interventions for individuals with OCD.
Relations between animal, carcass and meat characteristics across 15 European breeds
Creators: name: Albechaalany, J.
name: Ellies-Oury1, M.P.
name: Saracco, J.
name: Campo, M.M.
name: Richardson, I.
name: Ertbjerg, P.
name: Christensen, M.
name: Panea, B.
name: Faila, S.
name: Williams, J.L.
name: Hocquette, J.F.
Publisher: name: Zenodo
Year: 2022

description:  In this study, 436 young bulls from 15 cattle breeds were reared in five different countries following the same  experimental protocol. In all stations, the energy density ratio and protein content of the diet were similar. Animals were slaughtered at 15 months of age, and samples were collected 24 h post-mortem from the Longissimus thoracis muscle between the 6th and 13th left ribs. Each animal was characterized by a total of 51 variables representing animal performances, muscle biochemistry as well as sensorial and nutritional characteristics of beef quality. A statistical approach based on clustering of variables has been elaborated using the ClustOfVar package (R software 3.6.1). Using the parturition stability method, nine clusters were retained. The relationships between the variables in each cluster were studied using the principal component analysis (PCA) approach. The 1st dimension of eight clusters were considered representative, showing the highest variations between variables except from one cluster where two dimensions were considered. Each group of variables in each cluster emphasizes different characteristics: physiological  traits such as the muscle mass (clusters 1 and 2), fat mass (cluster 2), maturity (cluster 3); muscle biochemistry such as levels of enzymes involved in ageing (cluster 4); sensorial traits such as tenderness and juiciness (cluster 5), the muscle oxidative type (cluster 6); meat colour (clusters 7 and 9) and lipids (cluster 8). As a conclusion, the characteristics  related to body composition, muscle biochemistry, sensorial traits and meat colour show an independent relationship across breeds.
SN2002es-like Supernovae From Different Viewing Angles
Creators: name: Cao, Yi
name: Kulkarni, S. R.
name: Gal-Yam, Avishay
name: Papadogiannakis, S.
name: Nugent, P. E.
name: Masci, Frank J.
name: Bue, Brian D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this letter, we compare optical light curves of two SN2002es-like Type Ia supernovae, iPTF14atg and iPTF14dpk, from the intermediate Palomar Transient Factory. Although the two light curves resemble each other around and after maximum, they show distinct early-phase rise behavior in the $\textit{r}$-band. On the one hand, iPTF14atg revealed a slow and steady rise which lasted for 22 days with a mean rise rate of $0.2\sim0.3\,\textrm{mag}\,\textrm{day}^{-1}$, before it reached the $R$-band peak ($-18.05\,$mag). On the other hand, iPTF14dpk rose rapidly to $-17\,$mag within a day of discovery with a rise rate $>1.8\,\textrm{mag}\,\textrm{day}^{-1}$, and then rose slowly to its peak ($-18.19\,$mag) with a rise rate similar to iPTF14atg. The apparent total rise time of iPTF14dpk is therefore only 16 days. We show that emission from iPTF14atg before $-17\,$days with respect to its maximum can be entirely attributed to radiation produced by collision between the SN and its companion star. Such emission is absent in iPTF14dpk probably because of an unfavored viewing angle, provided that SN2002es-like events arise from the same progenitor channel. We further show that a SN2002es-like SN may experience a dark phase after the explosion but before its radioactively powered light curve becomes visible. This dark phase may be hidden by radiation from supernova-companion interaction.
description: 4 figures and 1 table. Submitted to ApJ Letters
Explaining Inverted Temperature Loops in the Quiet Solar Corona with Magnetohydrodynamic Wave Mode Conversion
Creators: name: Schiff, Avery J.
name: Cranmer, Steven R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Coronal loops trace out bipolar, arch-like magnetic fields above the Sun's surface. Recent measurements that combine rotational tomography, extreme ultraviolet imaging, and potential-field extrapolation have shown the existence of large loops with inverted temperature profiles; i.e., loops for which the apex temperature is a local minimum, not a maximum. These "down loops" appear to exist primarily in equatorial quiet regions near solar minimum. We simulate both these and the more prevalent large-scale "up loops" by modeling coronal heating as a time-steady superposition of: (1) dissipation of incompressible Alfven-wave turbulence, and (2) dissipation of compressive waves formed by mode conversion from the initial population of Alfven waves. We found that when a large percentage (> 99%) of the Alfven waves undergo this conversion, heating is greatly concentrated at the footpoints and stable "down loops" are created. In some cases we found loops with three maxima that are also gravitationally stable. Models that agree with the tomographic temperature data exhibit higher gas pressures for "down loops" than for "up loops," which is consistent with observations. These models also show a narrow range of Alfven wave amplitudes: 3 to 6 km/s at the coronal base. This is low in comparison to typical observed amplitudes of 20 to 30 km/s in bright X-ray loops. However, the large-scale loops we model are believed to comprise a weaker diffuse background that fills much of the volume of the corona. By constraining the physics of loops that underlie quiescent streamers, we hope to better understand the formation of the slow solar wind.
description: Accepted for publication in the Astrophysical Journal. 15 pages (emulateapj style), 11 figures
Kondo effect in a quantum wire with spin-orbit coupling
Creators: name: de Sousa, G. R.
name: Silva, Joelson F.
name: Vernek, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The influence of spin-orbit interactions on the Kondo effect has been under debate recently. Studies conducted recently on a system composed by an Anderson impurity on a 2DEG with Rashba spin-orbit have been shown that it can enhance or suppress the Kondo temperature ($T_{\rm K}$), depending on the relative energy level position of the impurity with respect to the particle-hole symmetric point. Here we investigate a system composed by a single Anderson impurity side-coupled to a quantum wire with spin-orbit coupling (SOC). We derive an effective Hamiltonian in which the Kondo coupling is modified by the SOC. In addition, the Hamiltonian contains two other scattering terms, the so called Dzaloshinskyi-Moriya interaction, know to appear in these systems, and a new one describing processes similar to the Elliott-Yafet scattering mechanisms. By performing a renormalization group analysis on the effective Hamiltonian, we find that the correction on the Kondo coupling due to the SOC favors and enhancement of the Kondo temperature even in the particle-hole symmetric point of the Anderson model, agreeing with the NRG results. Moreover, away from the particle-hole symmetric point, $T_{\rm K}$ always increases with the SOC, accordingly with the previous renormalization group analysis.
description: 9 pages, 3 figures
The XMM Cluster Outskirts Project (X-COP): Physical conditions to the virial radius of Abell 2142
Creators: name: Tchernin, C.
name: Eckert, D.
name: Ettori, S.
name: Pointecouteau, E.
name: Paltani, S.
name: Molendi, S.
name: Hurier, G.
name: Gastaldello, F.
name: Lau, E. T.
name: Nagai, D.
name: Roncarelli, M.
name: Rossetti, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Context. Galaxy clusters are continuously growing through the accretion of matter in their outskirts. This process induces inhomogeneities in the gas density distribution (clumping) which need to be taken into account to recover the physical properties of the intracluster medium (ICM) at large radii. Aims. We studied the thermodynamic properties in the outskirts (R > R500) of the massive galaxy cluster Abell 2142 by combining the Sunyaev Zel'dovich (SZ) effect with the X-ray signal. Methods. We combined the SZ pressure profile measured by Planck with the XMM-Newton gas density profile to recover radial profiles of temperature, entropy and hydrostatic mass out to 2R500. We used a method that is insensitive to clumping to recover the gas density, and we compared the results with traditional X-ray measurement techniques. Results. When taking clumping into account, our joint SZ/X-ray entropy profile is consistent with the predictions from pure gravitational collapse, whereas a significant entropy flattening is found when the effect of clumping is neglected. The hydrostatic mass profile recovered using joint X-ray/SZ data agrees with that obtained from spectroscopic X-ray measurements and with mass reconstructions obtained through weak lensing and galaxy kinematics. Conclusions. We found that clumping can explain the entropy flattening observed by Suzaku in the outskirts of several clusters. When using a method insensitive to clumping for the reconstruction of the gas density, the thermodynamic properties of Abell 2142 are compatible with the assumption that the thermal gas pressure sustains gravity and that the entropy is injected at accretion shocks, with no need to evoke more exotic physics. Our results highlight the need for X-ray observations with sufficient spatial resolution, and large collecting area, to understand the processes at work in cluster outer regions.
description: 22 pages, 32 figures, accepted in the journal A&A
Correlation and transport phenomena in topological nodal-loop semimetals
Creators: name: Liu, Jianpeng
name: Balents, Leon
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the unique physical properties of topological nodal-loop semimetals protected by the coexistence of time-reversal and inversion symmetries with negligible spin-orbit coupling. We argue that strong correlation effects occur at the surface of such systems for relatively small Hubbard interaction $U$, due to the narrow bandwidth of the "drumhead" surface states. In the Hartree-Fock approximation, at small $U$ we obtain a surface ferromagnetic phase through a continuous quantum phase transition characterized by the surface-mode divergence of the spin susceptibility, while the bulk states remain very robust against local interactions and remain non-ordered. At slightly increased interaction strength, the system quickly changes from a surface ferromagnetic phase to a surface charge-ordered phase through a first-order transition. When Rashba-type spin-orbit coupling is applied to the surface states, a canted ferromagnetic phase occurs at the surface for intermediate values of $U$. The quantum critical behavior of the surface ferromagnetic transition is nontrivial in the sense that the surface spin order parameter couple to Fermi-surface excitations from both surface and bulk states. This leads to unconventional Landau damping and consequently a naïve dynamical critical exponent $z\!\approx\!1$ when the Fermi level is close to the bulk nodal energy. We also show that, already without interactions, quantum oscillations arise due to bulk states, despite the absence of a Fermi surface when the chemical potential is tuned to the energy of the nodal loop. The bulk magnetic susceptibility diverges logarithmically whenever the nodal loop exactly overlaps with a quantized magnetic orbit in the bulk Brillouin zone. These correlation and transport phenomena are unique signatures of nodal loop states.
description: 8+7 pages, 7 figures, submitted to PRB
Finite Dehn surgeries on knots in $S^3$
Creators: name: Ni, Yi
name: Zhang, Xingru
Publisher: name: arXiv
Year: 2016
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25, 57M27, 57R58

description: We show that on a hyperbolic knot $K$ in $S^3$, the distance between any two finite surgery slopes is at most two and consequently there are at most three nontrivial finite surgeries. Moreover in case that $K$ admits three nontrivial finite surgeries, $K$ must be the pretzel knot $P(-2,3,7)$. In case that $K$ admits two noncyclic finite surgeries or two finite surgeries at distance two, the two surgery slopes must be one of ten or seventeen specific pairs respectively. For $D$-type finite surgeries, we improve a finiteness theorem due to Doig by giving an explicit bound on the possible resulting prism manifolds, and also prove that $4m$ and $4m+4$ are characterizing slopes for the torus knot $T(2m+1,2)$ for each $m\geq 1$.
description: 33 pages, 1 figure
The effect of complex environmental enrichment on locomotor, memory and affective function following dopamine receptor antagonism in adult rats with an investigation into a model of early-stage Parkinson's disease in aged rats
Creators: name: Hunt, Louise Ruby
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Parkinson's disease (PD) is a neurodegenerative disease that impairs motor movement and is associated with cognitive and affective disturbances. Rodent models of PD demonstrate that complex environmental enrichment (CEE) can protect against motor dysfunction and improve neural survival in these dopaminergic-lesioned rodents. A few studies show that cognitive deficits can be observed in early-stage PD rats, but to date, no intervention has attempted to treat these induced deficits. Aim: In preparation for developing an early-stage PD rat model, this paper explored whether CEE could alleviate induced motor, cognitive or mood dysfunction as induced by the transient effects of dopamine antagonism on Sprague Dawley rats. Specifically, Study 1 (Chapter 2) explored whether brief CEE was effective in protecting against locomotor, memory or depressive symptoms in rats administered dopamine antagonists (either SCH23390 or pimozide). Results demonstrated that CEE differentially protected against attenuation of spontaneous locomotor activity and improved motivated exploratory behaviour, of enriched rats challenged with the D₁ receptor antagonist SCH23390, but did not prevent attenuation of sucrose consumption induced by the D₂ receptor antagonist pimozide. Study 2 (Chapter 3) explored whether memory or affective disturbances could be produced in an early-stage PD rat model, using 6-OHDA to induce dopaminergic cell loss within the substantia nigra of the brain in aged rats. Neither memory nor anhedonic disturbances were evident in the early-stage PD rats. Subsequently, a CEE intervention was not introduced to these animals. Methodological alterations are discussed to improve both cognitive and affective testing of early-stage PD rats.
Conflict within the Victorian high school system : a study of the relationship between the teachers of Victorian high schools, their administrators, and the State government, 1965 to 1975
Creators: name: Meiers, A. J.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
A dynamics-free lower bound on the mass of our galaxy
Creators: name: Zaritsky, Dennis
name: Courtois, Helene
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use a sample of Milky Way (MW) analogs for which we have stellar and disk gas mass measurements, published measurements of halo gas masses of the MW and of similar galaxies, and the well-established value of the cosmological baryon fraction to place a lower bound on the mass of the Galaxy of $7.7\times10^{11} M_\odot$ and estimate that the mass is likely to be $\ge 1.2\times10^{12}$ M$_\odot$. Although most dynamical analyses yield measurements consistent with these results, several recent studies have advocated for a total mass well below $10^{12} M_\odot$. We reject such low mass estimates because they imply a Galactic baryon matter fraction significantly above the universal value. Convergence between dynamical mass estimates and those based on the baryonic mass is an important milestone in our understanding of galaxies.
description: Accepted for publication in MNRAS
Toward a vocational balanced scorecard: a grounded model based on multiple case studies of registered training organizations in Australia
Creators: name: Quazi, Zahurul
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: The Balanced Scorecard (BSC) is a widely used management tool to map organizational goals towards execution of strategies in line with the organization's vision. Prior research has either used the concept to develop goals or key performance indicators (KPIs) for different divisions, such as marketing and HR, or focused on the varying levels of successful adoption of BSC in ad hoc case studies. But little has been done to explore if BSC can be applied to a key economic sector where different organizations of fer unique services. While BSC has been investigated across industries, from hospitality to education, there are no studies on the application of BSC at vocational training institutions. The objective of this thesis is to explore the application of BSC for strategic performance in registered training organizations (RTOs), which are the equivalent of vocational training institutions (VTIs) in Australia. Using a sample of 15 RTOs and 30 in - depth interviews with managers, a grounded model for the application of BSC at VTIs called the vocational balanced scorecard (VBSC) was developed. The findings indicate that, as the primary strategic goal of RTOs is to offer higher education courses compatible with universities, the VBSC can significantly help achieve this goal. The VBSC helps set key objectives across course development, staff training, financial management, students' compliancy and support as well as with the process of continuous improvement and quality control. The model developed shows how the selected areas map, according to BSC, and enables RTO managers to adjust and communicate their strategy and rectify procedural deficiencies in their operations.
Flexocoupling impact on the kinetics of polarization reversal
Creators: name: Vorotiahin, Ivan S.
name: Morozovska, Anna N.
name: Eliseev, Eugene A.
name: Genenko, Yuri A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The impact of flexoelectric coupling on polarization reversal kinetics and space charge dynamics in thin films of ferroelectric-semiconductors has been theoretically studied. The relaxation-type Landau-Khalatnikov equation together with the Poisson equation and the theory of elasticity equations have been used to calculate in a self-consistent way the spatial-temporal development of ferroelectric polarization, electric potential and space charge, elastic stresses, strains and their gradients. The analysis of the obtained results reveals a moderate increase of the flexocoupling influence on the polarization, elastic strain, electric potential and space charge distribution dynamics with the decrease of a ferroelectric film thickness. In contrast, the dependence of polarization switching time on the applied electric field is strongly affected by the flexocoupling strength. The polarization reversal process consists typically of two stages, the first stage has no characteristic time, while the second one exhibits a switching time strongly dependent on the applied electric field.
description: 29 pages, 6 figures, 4 Appendices
Flora Unveiled: Exploring the Diverse Plant Collections of Berlin's Botanical Garden
Creators: name: Sommer, Lisa
Publisher: name: Zenodo
Year: 2023

description: A prototype publication of a fictional 'exhibition catalogue' based on a Wikidata-based collection of the Berlin Botanical Garden and Botanical Museum. The prototype shows how with a computational publishing pipeline, different distributed linked open data (LOD) sources can be brought together in a multi-format computational publication — allowing for asynchronous collaborative working. Distributed LOD sources include: Wikidata/base, Nextcloud, Thoth, Semantic Kompakkt and more.
description: {"references": ["Worthington, Simon (2023): Baroque AI. Programme Guide. Online unter: https://nfdi4culture.github.io/class-ADA-CP-pipeline/ [Letzter Aufruf: 2023-07-08]"]}
Low-temperature evolution of the spectral weight of a spin-up carrier moving in a ferromagnetic background
Creators: name: Möller, Mirko M.
name: Berciu, Mona
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We derive the lowest-temperature correction to the self-energy of a spin-up particle injected in a ferromagnetic background. The background is modeled with both Heisenberg and Ising Hamiltonians so that differences due to gapless vs. gapped magnons can be understood. Beside the expected thermal broadening of the quasiparticle peak as it becomes a resonance inside a continuum, we also find that spectral weight is transferred to regions lying outside this continuum. We explain the origin of this spectral weight transfer and its low-temperature evolution.
Trust and betrayal: a conceptual analysis
Creators: name: Jacoby, Brennan
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Vulnerability to betrayal has been identified as a distinguishing feature of trust, but there has been little direct analysis of betrayal or its implications for understanding trust. A clear account of betrayal is needed for at least two reasons: to explain the distinction between trust and mere reliance; and to explicate the challenges facing trusters who have been betrayed. If it is true that when we trust we risk betrayal, then every instance of trust involves accepting that others might betray us. The risk of betrayal may fade into the background of most trusters' interactions with others, but it will feature significantly in the cognitive and affective experiences of those who have been betrayed. Betrayal can result in distrust, loss of confidence in knowing who can be trusted, and responses such as resentment and hostile emotions. These effects can inhibit trust after betrayal, but they are not always bad. Distrust, loss of confidence, resentment and hostility may prevent a victim from trusting unwisely or too quickly. That said, these effects of betrayal can also inhibit reasonable placement of trust. And yet some victims do trust after being betrayed. In this thesis I analyse trust and trustworthiness and use distinctions developed in that analysis to explain betrayal, its impact on trust, and the conceptual issues raised by trust after betrayal.
Probing IrTe2 crystal symmetry by polarized Raman scattering
Creators: name: Lazarević, N.
name: Bozin, E. S.
name: Šćepanović, M.
name: Opačić, M.
name: Lei, Hechang
name: Petrovic, C.
name: Popović, Z. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Polarized Raman scattering measurements on IrTe$_2$ single crystals carried out over 15~K - 640~K temperature range, and across the structural phase transition, reveal new insights regarding the crystal symmetry.\ In the high temperature regime three Raman active modes are observed at all studied temperatures above the structural phase transition, rather than two as predicted by the factor group analysis for the assumed $P\bar{3}m1$ symmetry. This indicates that the actual symmetry of the high temperature phase is lower than previously thought.\ Observation of an additional E$_g$ mode at high temperature can be explained by doubling of the original trigonal unit cell along the $c$-axis and within the $P\bar{3}c1$ symmetry.\ In the low temperature regime (below 245 K) the new Raman modes appear as a consequence of the symmetry lowering phase transition and corresponding increase of the primitive cell.\ All the modes observed below the phase transition temperature can be assigned within the monoclinic crystal symmetry.\ Temperature dependence of the Raman active phonons in both phases are mainly driven by anharmonicity effects. The results call for reconsideration of the crystallographic phases of IrTe$_2$.
The Changing Cost of Living - supplementary measures
Creators: name: Johnson, Elliott
name: Nettle, Daniel
name: De Courson, Benoît
name: Pickett, Kate
name: Johnson, Matthew T.
name: Chevallier, Coralie
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Medicine and Health Sciences
subject: Social and Behavioral Sciences

description: Adding a second registration giving details of extra measures introduced during the course of the study.
Fluctuations of the free energy of the spherical Sherrington-Kirkpatrick model with ferromagnetic interaction
Creators: name: Baik, Jinho
name: Lee, Ji Oon
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider a spherical spin system with pure 2-spin spherical Sherrington-Kirkpatrick Hamiltonian with ferromagnetic Curie-Weiss interaction. The system shows a two-dimensional phase transition with respect to the temperature and the coupling constant. We compute the limiting distributions of the free energy for all parameters away from the critical values. The zero temperature case corresponds to the well-known phase transition of the largest eigenvalue of a rank 1 spiked random symmetric matrix. As an intermediate step, we establish a central limit theorem for the linear statistics of rank 1 spiked random symmetric matrices.
description: 45 pages, references added
Anomalous orbital structure in a spinel-perovskite interface $γ$-Al$_2$O$_3$/SrTiO$_3$
Creators: name: Cao, Yanwei
name: Liu, Xiaoran
name: Shafer, P.
name: Middey, S.
name: Meyers, D.
name: Kareev, M.
name: Zhong, Z.
name: Kim, J. -W.
name: Ryan, P. J.
name: Arenholz, E.
name: Chakhalian, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In all archetypical reported (001)-oriented perovskite heterostructures, it has been deduced that the preferential occupation of two-dimensional electron gases is in-plane $d_\textrm{xy}$ state. In sharp contrast to this, the investigated electronic structure of a spinel-perovskite heterostructure $γ$-Al$_2$O$_3$/SrTiO$_3$ by resonant soft X-ray linear dichroism, demonstrates that the preferential occupation is out-of-plane $d_\textrm{xz}$/$d_\textrm{yz}$ states for interfacial electrons. Moreover, the impact of strain further corroborates that this anomalous orbital structure can be linked to the altered crystal field at the interface and symmetry breaking of the interfacial structural units. Our findings provide another interesting route to engineer emergent quantum states with deterministic orbital symmetry.
description: 4 figures
The Gaia-ESO survey: Hydrogen lines in red giants directly trace stellar mass
Creators: name: Bergemann, Maria
name: Serenelli, Aldo
name: Schoenrich, Ralph
name: Ruchti, Greg
name: Korn, Andreas
name: Hekker, Saskia
name: Kovalev, Mikhail
name: Mashonkina, Lyudmila
name: Gilmore, Gerry
name: Randich, Sofia
name: Asplund, Martin
name: Rix, Hans-Walter
name: Casey, Andrew R.
name: Jofre, Paula
name: Pancino, Elena
name: Recio-Blanco, Alejandra
name: de Laverny, Patrick
name: Smiljanic, Rodolfo
name: Tautvaisiene, Grazina
name: Bayo, Amelia
name: Lewis, Jim
name: Koposov, Sergey
name: Hourihane, Anna
name: Worley, Clare
name: Morbidelli, Lorenzo
name: Franciosini, Elena
name: Sacco, Germano
name: Magrini, Laura
name: Damiani, Francesco
name: Bestenlehner, Joachim M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Red giant stars are perhaps the most important type of stars for Galactic and extra-galactic archaeology: they are luminous, occur in all stellar populations, and their surface temperatures allow precise abundance determinations for many different chemical elements. Yet, the full star formation and enrichment history of a galaxy can be traced directly only if two key observables can be determined for large stellar samples - age and chemical composition. While spectroscopy is a powerful method to analyse the detailed abundances of stars, stellar ages are the "missing link in the chain", since they are not a direct observable. However, spectroscopy should be able to estimate stellar masses, which for red giants directly infer ages provided their chemical composition is known. Here we establish a new empirical relation between the shape of the hydrogen line in the observed spectra of red giants and stellar mass determined from asteroseismology. The relation allows to determine stellar masses and ages with the accuracy of 10-15%. The method can be used with confidence for stars in the following range of stellar parameters: 4000 < Teff < 5000 K, 0.5 < log g < 3.5, -2.0 < [Fe/H] < 0.3, and luminosities log L/LSun < 2.5. Our analysis provides observational evidence that the Halpha spectral characteristics of red giant stars are tightly correlated with their mass and therefore their age. We also show that the method samples well all stellar populations with ages above 1 Gyr. Targeting bright giants, the method allows to obtain simultaneous age and chemical abundance information far deeper than would be possible with asteroseismology, extending the possible survey volume to remote regions of the Milky Way and even to neighbouring galaxies like Andromeda or the Magellanic Clouds already with present instrumentation, like VLT and Keck facilities.
description: 18 pages, accepted for publication in A&A
Informed consent. Interviews (Research Data Management).
Creators: name: Strauch, Annette
Publisher: name: Zenodo
Year: 2020
Subjects: RDM (legal)
Research Data Management
FDM (rechtl. Aspekte)
Forschungsdatenmanagement Niedersachsen
Forschungsdatenmanagement

description: Informed consent. Interviews (Research Data Management).
Towards 'smart lasers': self-optimisation of an ultrafast pulse source using a genetic algorithm
Creators: name: Woodward, R. I.
name: Kelleher, E. J. R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Short-pulse fibre lasers are a complex dynamical system possessing a broad space of operating states that can be accessed through control of cavity parameters. Determination of target regimes is a multi-parameter global optimisation problem. Here, we report the implementation of a genetic algorithm to intelligently locate optimum parameters for stable single-pulse mode-locking in a Figure-8 fibre laser, and fully automate the system turn-on procedure. Stable ultrashort pulses are repeatably achieved by employing a compound fitness function that monitors both temporal and spectral output properties of the laser. Our method of encoding photonics expertise into an algorithm and applying machine-learning principles paves the way to self-optimising `smart' optical technologies.
Driven quantum tunneling and pair creation with graphene Landau levels
Creators: name: Gagnon, Denis
name: Fillion-Gourdeau, François
name: Dumont, Joey
name: Lefebvre, Catherine
name: MacLean, Steve
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Driven tunneling between graphene Landau levels is theoretically linked to the process of pair creation from vacuum, a prediction of quantum electrodynamics (QED). Landau levels are created by the presence of a strong, constant, quantizing magnetic field perpendicular to a graphene mono-layer. Following the formal analogy between QED and the description of low-energy excitations in graphene, solutions of the fully interacting Dirac equation are used to compute electron-hole pair creation driven by a circularly or linearly polarized field. This is achieved via the coupled channel method, a numerical scheme for the solution of the time-dependent Dirac equation in the presence of bound states. The case of a monochromatic driving field is first considered, followed by the more realistic case of a pulsed excitation. We show that the pulse duration yields an experimental control parameter over the maximal pair yield. Orders of magnitude of the pair yield are given for experimentally achievable magnetic fields and laser intensities weak enough to preserve the Landau level structure.
Electron impact excitation of N IV: calculations with the DARC code and a comparison with ICFT results
Creators: name: Aggarwal, K. M.
name: Keenan, F. P.
name: Lawson, K. D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: There have been discussions in the recent literature regarding the accuracy of the available electron impact excitation rates (equivalently effective collision strengths $Υ$) for transitions in Be-like ions. In the present paper we demonstrate, once again, that earlier results for $Υ$ are indeed overestimated (by up to four orders of magnitude), for over 40\% of transitions and over a wide range of temperatures. To do this we have performed two sets of calculations for N~IV, with two different model sizes consisting of 166 and 238 fine-structure energy levels. As in our previous work, for the determination of atomic structure the GRASP (General-purpose Relativistic Atomic Structure Package) is adopted and for the scattering calculations (the standard and parallelised versions of) the Dirac Atomic R-matrix Code ({\sc darc}) are employed. Calculations for collision strengths and effective collision strengths have been performed over a wide range of energy (up to 45~Ryd) and temperature (up to 2.0$\times$10$^6$~K), useful for applications in a variety of plasmas. Corresponding results for energy levels, lifetimes and A-values for all E1, E2, M1 and M2 transitions among 238 levels of N~IV are also reported.
description: This paper with 5 Figs. and 8 Tables will appear in MNRAS (2016)
Intracavity frequency-doubled degenerate laser
Creators: name: Liew, Seng Fatt
name: Knitter, Sebastian
name: Weiler, Sascha
name: Monjardin-Lopez, Jesus Fernando
name: Ramme, Mark
name: Redding, Brandon
name: Choma, Michael A.
name: Cao, Hui
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We develop a green light source with low spatial coherence via intracavity frequency doubling of a solid-state degenerate laser. The second harmonic emission supports many more transverse modes than the fundamental emission, and exhibit lower spatial coherence. A strong suppression of speckle formation is demonstrated for both fundamental and second harmonic beams. Using the green emission for fluorescence excitation, we show the coherent artifacts are removed from the full-field fluorescence images. The high power, low spatial coherence and good directionality makes the green degenerate laser an attractive illumination source for parallel imaging and projection display.
description: 5 pages, 3 figures, in submission