cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Statistical mechanics of 2D turbulence with a prior vorticity distribution
Creators: name: Chavanis, Pierre-Henri
Publisher: name: arXiv
Year: 2009
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We adapt the formalism of the statistical theory of 2D turbulence in the case where the Casimir constraints are replaced by the specification of a prior vorticity distribution. A phenomenological relaxation equation is obtained for the evolution of the coarse-grained vorticity. This equation monotonically increases a generalized entropic functional (determined by the prior) while conserving circulation and energy. It can be used as a thermodynamical parametrization of forced 2D turbulence, or as a numerical algorithm to construct (i) arbitrary statistical equilibrium states in the sense of Ellis-Haven-Turkington (ii) particular statistical equilibrium states in the sense of Miller-Robert-Sommeria (iii) arbitrary stationary solutions of the 2D Euler equation that are formally nonlinearly dynamically stable according to the Ellis-Haven-Turkington stability criterion refining the Arnold theorems.
description: Proceedings of the international conference "Euler Equations: 250 Years" (Aussois, France 18-23 June 2007). Edited by G. Eyink, U. Frisch, R. Moreau and A. Sobolevski
Self-represented litigants : the impact of the Family law duty lawyer scheme in Tasmania
Creators: name: Mussared, K
Publisher: name: University Of Tasmania
Year: 2023

description: A growing body of research has investigated the impact of self-representation on everyone involved in the family court system. The Family Law Duty Lawyer Scheme (the 'Scheme') was introduced in 2005 as one early intervention measure to minimise the adverse effects of self-representation. The Scheme was intended to enhance access to justice for self-represented litigants ('SRLs') and improve the efficient operation of the Family Courts. The effectiveness of the Scheme has not been investigated. The objective of this research is to provide an understanding of how the Scheme operates in Tasmania, what benefit it provides, and whether it reduces the impact of self-representation by examining the Scheme in a practical setting. It takes an action research approach. The researcher is in the unique position of working as the family law duty lawyer with the Legal Aid Commission of Tasmania ('LACT') in Hobart. She has collaborative arrangements with the small and cohesive legal profession in Tasmania, many of whom participated in the empirical study that was part of this investigation to provide their views and experiences of SRLs in the family law system. The study used both qualitative and quantitative methods involving interviews with judges and duty lawyers and surveys of SRLs, court staff and family law practitioners in Tasmania. It was anticipated that the research would result in changes being made to the delivery of the duty lawyer service by the researcher, in her role as duty lawyer. The results of the surveys and interviews revealed a widespread acknowledgement of the benefits to the family law system when the duty lawyer assists SRLs before they file proceedings; that there is a need to raise awareness of the Scheme and provide information about what the duty lawyer can and cannot do; and that the duty lawyer service is highly valued and appreciated to the extent that there is a demand for duty lawyers to be available for more time outside the court lists, offering a wider range of services to SRLs. This thesis develops a best practice model for Tasmania, and recommends reforms to the Scheme to increase and enhance duty lawyer services. The recommended initiatives may be applied in other jurisdictions wishing to adopt a model offering a duty lawyer service. The Scheme can evolve to be a more extensive and useful service by improving and expanding access to justice for SRLs.
Study of supernovae and their host galaxy dynamical features
Creators: name: Karapetyan, Arpine
Publisher: name: Zenodo
Year: 2023
Subjects: galaxies: spiral
galaxies: star formation
galaxies: stellar content
galaxies: bar
galaxies: disc
galaxies: kinematics and dynamics
supernovae: general

description: The thesis is devoted to study supernovae (SNe) and their host galaxy dynamical features. To constraint the nature of the SNe progenitors the spectral and photometric properties of Type Ia and core-collapse (CC) SNe are investigated and connections with the properties of their host stellar populations are established, specifically focusing on dynamical ages within galaxies.Particularly, the impact of bars and bulges on the radial distributions of the different types of SNe in the stellar discs of host galaxies with various morphologies has been analysed by using a well-defined sample of 500 nearby SNe and their S0-Sm host galaxies. Furthermore, based on the UV/Hα images of the discs of galaxies hosting 185 SNe Ia, a simple visual classification method is presented to perform a comparative analysis of the locations and light-curve (LC) decline rates ∆m15 of both normal and peculiar SNe Ia in the star formation deserts and beyond.On the other hand, constraints on SN progenitors have been also approached from a dynamical perspective, such as by studying the spiral structure of host galaxies. The impact of spiral density waves on the radial and surface density distributions of 333 SNe hosted in relatively nearby, low-inclined, morphologically non-disturbed and unbarred 269 galaxies with different arm classes has been analysed. Moreover, the distribution of 77 SNe Ia relative to spiral arms of their host galaxies have been analysed by using our original measurements of the SN distances from the nearby arms. The LC decline rates (∆m15) of the SNe have been studied as well.With the implementation of the WOLFRAM MATHEMATICA software and Monte Carlo simulations, the well-known statistical tests (Kolmogorov-Smirnov and Anderson-Darling tests) are used to perform various comparisons between the properties/numbers of the different subsamples. Moreover, to analyse the possible correlations between the physical properties of SNe and their host galaxies the Spearman's rank correlation test are used.The results obtained in this thesis, give an excellent possibility to constrain the nature of SNe Ia progenitors by assuming that these events can be interpreted in the framework of sub-MCh mass white dwarf explosion scenario. In this context, the SN Ia LC decline rate serves as an effective gauge of the age of the progenitor population. On the other hand, it is demonstrated how the mentioned dynamical features of host galaxies affect the distributions of CC SNe.
The early history of protostellar disks, outflows, and binary stars
Creators: name: Duffin, Dennis F.
name: Pudritz, Ralph E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In star formation, magnetic fields act as a cosmic angular momentum extractor that increases mass accretion rates onto protostars and in the process, creates spectacular outflows. However, recently it has been argued that this magnetic brake is so strong that early protostellar disks -- the cradles of planet formation -- cannot form. Our three-dimensional numerical simulations of the early stages of collapse (\lesssim 10^5 yr) of overdense star--forming clouds form early outflows and have magnetically regulated and rotationally dominated disks (inside 10 AU) with high accretion rates, despite the slip of the field through the mostly neutral gas. We find that in three dimensions, magnetic fields suppress gravitationally driven instabilities which would otherwise prevent young, well ordered disks from forming. Our simulations have surprising consequences for the early formation of disks, their density and temperature structure, the mechanism and structure of early outflows, the flash heating of dust grains through ambipolar diffusion, and the origin of planets and binary stars.
description: 12 pages, 3 figures, accepted by ApJ Letters; corrected text to match journal version; movies can be found at http://www.physics.mcmaster.ca/~duffindf/movies.html
Additional file 1 of A new sex-specific underlying mechanism for female schizophrenia: accelerated skewed X chromosome inactivation
Creators: name: Zhang, Xinzhu
name: Li, Yuhong
name: Ma, Lei
name: Zhang, Guofu
name: Liu, Min
name: Wang, Chuanyue
name: Zheng, Yi
name: Li, Rena
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. General demographics of subjects and clinical categories. Figure S1. A.B.C the distribution of age of onset in child adult elderly group, the green linear = skewed XCI ≥ 80:20. Child group: r = 0.20, p = 0.21, y = 0.01*x + 0.4787; adult group: r = 0.127, p = 0.39, y = 0.007371* + 0.53131; elderly group: r = 0.3328, p = 0.2078, y = 0.001712* + 0.6436. Figure S2. Compared age of onset and age by Paired Sample Test (t = 6.62, p < 0.001).
MPEC 2024-S116 : 2024 RV50
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 RV50

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Particle number fluctuations and their relation to geometrical probability
Creators: name: Ehlers, Peter Frank
Publisher: name: University of British Columbia
Year: 2011

description: Fluctuations in the number of particles N within a small subvolume of a system of classical non-interacting particles undergoing free flight, diffusion or Brownian motion are studied. Emphasis is on the temporal correlations and the subvolume geometry. Smoluchowski's method of probability after-effects is used in conjunction with an "intersection volume" technique. Free-flight autocorrelation functions for N(t) are derived for several velocity distributions, including the classical and relativistic Maxwellian. Low-frequency number spectra are obtained for the classical ideal gas in thermal equilibrium when the subvolume is a thin slab, long cylinder or sphere. A new theorem in geometrical probability is obtained by relating the autocorrelations of N and N. We also generalize the problem of the first passage time (to the surface) of particles diffusing out of an n-sphere under absorptive boundary conditions. We account for particle decay and random initial position. The resulting characteristic function of the first passage time is applied to the problem of positronium diffusion in solid powders. The experimentally observed dependence of positron annihilation spectra on powder particle size permits one to calculate the diffusion constant for o-Ps atoms in the powder particles. Diffusion constants deduced by Brandt and Paulin (1968) from their experiments are shown to be too large by a factor of about 4. Corrected values have now been published (Brandt and Paulin, 1972) as a result of discussion with the present writer.
The wedge zone research
Creators: name: Bertoli, Davide
Publisher: name: Loughborough University
Year: 2024

description: Engineering of Sport 15 - Proceedings from the 15th International Conference on the Engineering of Sport (ISEA 2024)
The goal of the research was to analyze the different behaviors in grip and force pressure between Amateurs (AM) of different levels and Tour Players (TP) and how this affects the wedge delivery from 15 to 50 meters. We tested 90 AM and 30 TP, for a total of 6000 shots.
Investigating the age and structure of the infrared old open clusters LK1, LK10, FSR1521 and FSR1555
Creators: name: Bonatto, Charles
name: Bica, Eduardo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) - The combination of several mass-decreasing processes may critically affect the structure of open clusters (OCs), to the point that most dissolve into the field in a time-scale shorter than $\approx1$ Gyr. In this paper we focus on 4 candidate old star clusters, namely, LK 1, LK 10, FSR 1521, and FSR 1555. To analyse the target clusters we construct near infrared colour-magnitude diagrams (CMDs) and derive stellar radial density profiles (RDPs). The CMDs are constructed using 2MASS \jj, \hh, and \ks bands, and the intrinsic morphologies of the target OCs within these diagrams are revealed by applying a field-star decontamination algorithm. Fundamental parameters are estimated with Padova isochrones built for the 2MASS filters. We derive extinctions to the objects within the range $3.4\le\aV\le8.9$, which makes them suitable for the near-infrared analysis, ages within $1.0 - 2.0$ Gyr, and distances from the Sun within $1.4 - 4.5$ kpc. These distances, in conjunction with the positions in the sky, place the present 4 OCs close to the solar circle ($\la0.6$ kpc). For LK 10 our photometry reaches a depth $\approx3$ mags below the main sequence turn off, from which we derive a relatively steep mass function slope ($χ=2.4\pm0.4$) when compared to the Salpeter value ($χ=1.35$). LK 10 is a rather massive old OC, with a mass within $1360\le m(\ms)\le4400$, for stars in the observed magnitude range and the extrapolation to $0.08 \ms$, respectively. The mass estimated in the restricted magnitude range for the remaining, more distant OCs is within $260\le m(\ms)\le380$. However, similarity with the CMD morphology and red clump of LK 10 suggests that they may be as massive as LK 10.
description: 15 pages and 11 figures. Accepted by MNRAS
Topologically massive gravity on AdS$_2$ spacetimes
Creators: name: Myung, Yun Soo
name: Kim, Yong-Wan
name: Park, Young-Jai
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the topologically massive gravity with a negative cosmological constant on AdS$_2$ spacetimes by making use of dimensional reduction. For a constant dilaton, this two-dimensional model admits three AdS$_2$ vacuum solutions, which are related to AdS$_3$ and warped AdS$_3$ with an identification upon uplifting three dimensions. We carry out the perturbation analysis around these backgrounds to find what is a physically propagating field. It turns out that a mode of $δF = (h-f/e)$ is merely a redundant field of dilaton $φ$ in the absence of Chern-Simons terms, while it becomes a massive scalar in the presence of Chern-Simons terms. This shows clearly that the proper number of physically propagating degrees of freedom is one for the topologically massive gravity. Moreover, at the points of $K=l,l/3$, $δF$ becomes a massless scalar which implies that there is no physically propagating degrees of freedom at the chiral point.
description: 24 pages, 3 figures, added appendix, version to appear in JHEP
title: The Double-Edged Sword of CEO Activism
Creators: name: Larcker, David F.
name: Miles, Stephen A.
name: Tayan, Brian
name: Wright-Violich, Kim
Publisher: name: Corporate Governance Research Initiative
Year: 2018

description: CEO activism — the practice of CEOs taking public positions on environmental, social, and political issues not directly related to their business — has become a hotly debated topic in corporate governance. To better understand the implications of CEO activism, we examine its prevalence, the range of advocacy positions taken by CEOs, and the public’s reaction to activism. We ask: How widespread is CEO activism? How well do boards understand the advocacy positions of their CEOs? Are boards involved in decisions to take public stances on controversial issues, or do they leave these to the discretion of the CEO? How should boards measure the costs and benefits of CEO activism? How accurately can internal and external constituents distinguish between positions taken proactively and reactively by a CEO?
Development of reliable quantitative structure–toxicity relationship models for toxicity prediction of benzene derivatives using semiempirical descriptors
Creators: name: Singh, Ayushi
name: Kumar, Sunil
name: Kapoor, Archana
name: Kumar, Parvin
name: Kumar, Ashwani
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: The Health and environmental hazards of benzene and nitrobenzene (NB) derivatives have remained a topic of interest of researchers. In silico methods for prediction of toxicity of chemicals have proved their worth in accurate forecast of environmental as well as health toxicity and are strongly recommended by regulatory authorities. Two quantitative structure–toxicity relationship (QSTR) models explaining Scenedesmus obliquus toxicity trends among 39 benzene derivatives and Tetrahymena pyriformis toxicity of 103 NB and 392 benzene derivatives are developed using semiempirical quantum chemical parameters. The best constructed QSTR models have good fitting ability (R2 = 0.8053, 0.7591, and 0.8283) and robustness (Q2LOO = 0.7507, 0.7227, and 0.8194; Q2LMO = 0.7338, 0.7153, and 0.8172). The external predictivity of all the models are quite good (R2EXT = 0.8256, 0.9349, and 0.8698). Electronegativity, Cosmo volume, total energy, and molecular weight are responsible for the increase and decrease of toxicity of benzene derivatives against S. obliquus while electronegativity, electrophilicity index, the heat of formation, total energy, hydrophobicity, and cosmo volume are responsible for modulation of toxicity of NB and benzene derivatives toward T. pyriformis. These models fulfill the requirements of all the five OECD principles.
Kilohertz microfluidics as an analytical tool for determining dynamic characteristics of microfluidic systems
Creators: name: Vedel, Soren
name: Olesen, Laurits H.
name: Bruus, Henrik
Publisher: name: arXiv
Year: 2009
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The advent in recent years of highly parallelized microfluidic chemical reaction systems necessitates an understanding of all fluid dynamic time scales including the often neglected millisecond time scale of the inertia of the liquid. We propose the use of harmonically oscillating microfluidics in the low kilohertz range as an analytical tool for the deduction of these time scales. Furthermore, we suggest the use of systems-level equivalent circuit theory as an adequate theory of the behavior of the system. A novel pressure source capable of operation in the desired frequency range is presented for this generic analysis. As a proof of concept, we study the fairly complex system of water-filled interconnected elastic microfluidic tubes containing a large, trapped air-bubble and driven by a pulsatile pressure difference. We demonstrate good agreement between the systems-level model and the experimental results, allowing us to determine the dynamic time scales of the system.
description: This paper has been removed from arXiv.org due to copyright issues. 1 page, RevTex
3D numerical model of the Omega Nebula (M17): simulated thermal X-ray emission
Creators: name: Reyes-Iturbide, J.
name: Velazquez, P. F.
name: Rosado, M.
name: Rodriguez-Gonzalez, A.
name: Gonzalez, R. F.
name: Esquivel, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present 3D hydrodynamical simulations of the superbubble M17, also known as the Omega nebula, carried out with the adaptive grid code yguazu'-a, which includes radiative cooling. The superbubble is modelled considering the winds of 11 individual stars from the open cluster inside the nebula (NGC 6618), for which there are estimates of the mass loss rates and terminal velocities based on their spectral types. These stars are located inside a dense interstellar medium, and they are bounded by two dense molecular clouds. We carried out three numerical models of this scenario, considering different line of sight positions of the stars (the position in the plane of the sky is known, thus fixed). Synthetic thermal X-ray emission maps are calculated from the numerical models and compared with ROSAT observations of this astrophysical object. Our models reproduce successfully both the observed X-ray morphology and the total X-ray luminosity, without taking into account thermal conduction effects.
description: 8 pages, 6 figures, accepted for publication in MNRAS
Conditions for Phase Equilibrium in Supernovae, Proto-Neutron and Neutron Stars
Creators: name: Hempel, M.
name: Pagliara, G.
name: Schaffner-Bielich, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate the qualitative properties of phase transitions in a general way, if not the single particle numbers of the system but only some particular charges like e.g. baryon number are conserved. In addition to globally conserved charges we analyze the implications of locally conserved charge fractions, like e.g. local electric charge neutrality or locally fixed proton or lepton fractions. The conditions for phase equilibrium are derived and it is shown, that the properties of the phase transition do not depend on the locally conserved fractions. Finally, the general formalism is applied to the liquid-gas phase transition and the hadron-quark phase transition for typical astrophysical environments like in supernovae, proto-neutron or a neutron stars. We demonstrate that the Maxwell construction known from cold-deleptonized neutron star matter with two locally charge neutral phases requires modifications and further assumptions concerning the applicability for hot lepton-rich matter. All possible combinations of local and global conservation laws are analyzed, and the physical meaningful cases are identified. Several new kinds of mixed phases are presented, as e.g. a locally charge neutral mixed phase in proto-neutron stars which will disappear during the cooling and deleptonization of the proto-neutron star.
description: 18 pages
Vital ground : a sculptural investigation of the perceptions of Rock Island Bend on the Franklin River, Tasmania
Creators: name: Thomson, Alexander
Publisher: name: University Of Tasmania
Year: 2023

description: This research project is framed as a case study to investigate how an individual's perception, and hence understanding of a site, might be affected by engagement with art informed by the site in question. This process has involved exploring connections between how we encounter and experience an artwork (inspired by a site), and subsequently documenting how understanding and perception are altered once we experience the site itself. The project employs scientific cognitivism, and explores how processes of visual analysis influence our perception of a particular location. Rock Island Bend (RIB) is a site known to most Tasmanians only through Peter Dombrovskis' famous Morning Mist, Rock Island Bend, Franklin River, Tasmania, 1979 image. The understanding of this site, with its reputed beauty and value, is almost entirely defined by that one image for even when people visit RIB they tend to return with renewed versions of the original Dombrovskis image, rather than newly developed representations of the site. In their attempt to understand and engage with site, they do so based upon what they've learned, experienced and been taught; each viewer brings their life experiences and inherited culture to each aesthetic moment whether framed by a site or an artwork. But how do our lives, our personas, experiences, and nuances influence what, and how we see and understand, and how does that understanding vary over time?
Effect of AI Driven Personalization on Purchasing Decisions and Customer Satisfaction in the Fashion Industry in Nigeria
Creators: name: Innocent I.A.
name: Aliyu B.M.
name: Odiba R.I.
Publisher: name: gjrpublication
Year: 2024

description: AI-driven personalization is a potent tool for enhancing consumer purchasing decisions and customer satisfaction in Nigeria’s fashion industry. This study examined the effect of AI-driven personalisation on consumer purchasing decisions and customer satisfaction in the fashion industry in Nigeria and the effect of product recommendations, virtual try-ons and fitting rooms, and personalized styling advice on consumer purchasing decisions and customer satisfaction in the fashion industry in Nigeria. The study adopted the survey method. The population of the study was 200customers of the 4 prominent online fashion retail platforms in Nigeria. Census sampling was adopted and all the 200 served as the sample size. A structured-self-administered questionnaire was adopted as the major instrument for collecting primary data. Regression analysis was used as a technique of data analysis. Study findings revealed specifically that, product recommendations play a crucial role in influencing purchase decisions, while personalized styling advice has the most substantial impact on customer satisfaction. Virtual try-ons and fitting rooms, though less influential, still contribute positively to both purchasing decisions and satisfaction. The study therefore recommends among others that fashion retailers should invest in advanced AI algorithms to improve the accuracy and relevance of product recommendations by partnering with AI specialists to refine recommendation systems based on consumer data and preferences.
IT innovation theory and practice : a multi-case study investigation of organisational approaches and experiences in IT innovation
Creators: name: Thurley, JM
Publisher: name: University Of Tasmania
Year: 2023

description: This thesis presents a multi-case study investigation of organisational approaches and experiences in information technology (IT) innovation. Building on an empirically grounded model of IT innovation based on these case studies, the research generates a knowledge framework that aims to enhance IT innovation theory and practice. Innovation involving the production and/or use of IT has been shown to be important for economic growth. Organisation level studies suggest that IT enables innovation and that the probability of innovation increases with the intensity of IT use (OECD 2009). IT is inherently configurable and programmable and is routinely adapted and modified for use in a variety of applications across a range of domains. The general-purpose nature of IT provides significant opportunity for it to be directly involved in innovation activity (Brynjolfsson & Saunders 2010). Innovation involving either the application or production of IT is also very pervasive, extending beyond the IT producing sectors to most non-IT producing (IT user) sectors of the economy. But what is IT innovation? How is IT innovation achieved? How can IT innovation be analysed effectively?
Skewness of maximum likelihood estimators in dispersion models
Creators: name: Simas, Alexandre B.
name: Cordeiro, Gauss M.
name: Rocha, Andréa V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We introduce the dispersion models with a regression structure to extend the generalized linear models, the exponential family nonlinear models (Cordeiro and Paula, 1989) and the proper dispersion models (Jørgensen, 1997a). We provide a matrix expression for the skewness of the maximum likelihood estimators of the regression parameters in dispersion models. The formula is suitable for computer implementation and can be applied for several important submodels discussed in the literature. Expressions for the skewness of the maximum likelihood estimators of the precision and dispersion parameters are also derived. In particular, our results extend previous formulas obtained by Cordeiro and Cordeiro (2001) and Cavalcanti et al. (2009). A simulation study is perfomed to show the practice importance of our results.
Wildness and artefact : re-presenting the divergent trajectories of Lakes Gordon and Pedder
Creators: name: Bluhdorn, DR
Publisher: name: University Of Tasmania
Year: 2023

description: The Gordon River Power Development in southwest Tasmania was completed in the early 1970s, creating two large hydro-industrial impoundments: Lakes Gordon and Pedder. The Tasmanian Wilderness World Heritage Area now surrounds these impoundments. This project visually interrogated the consequences of impoundment after almost half a century of operation under dissimilar management regimes. The project's practice-based photographic research focussed on water as the dominant element in hydropower generation, and as a key agent of wildness. Its objective was to produce a body of work that reflected my responses to the impoundments' divergent visual trajectories and the wild processes affecting them and their associated catchments. Conceptual investigations were directed towards humanity's perceptions of its relationship with the extra-human world. The research drew on a multidisciplinary theoretical background to support an awareness of alternative perceptual modes and to explore the possibilities offered by an extra-human perception of the subsurface aquatic environment. Located within the field of landscape photography, the project explored aspects of the genre's development, focussing on two apparently divergent trends, designated environmental advocacy and wilderness deconstructed. This approach informed research into antecedent landscape photography of the Pedder-Gordon area and relevant contemporary landscape photography, including apposite aquatic imagery. Multiple trips to the field locations facilitated the project's experiential investigations. The Pedder Impoundment's divergence was found to be attributable to water's engineered persistence. This enabled the representation of aspects of weather, dam leakage, the development of macrophyte beds, and the persistence of aseasonal wetlands. In the Gordon Impoundment, the principal driver of divergence was the market-driven withdrawal of water. The recently dewatered littoral exhibited the effects of inundation and pre-impoundment logging, as well as its terrestrial and fluvial regenerative processes. Water's intrinsic wildness was explored through subsurface imagery of both impoundments' inflowing waterways. The project's outcomes, a suite of original photographic prints and a published performative work, successfully address the research questions posed. These works contribute meaningfully to the ongoing discourse surrounding conceptions of wildness and of artefact, and their affective representation. Such outcomes are broadly applicable to the fields of landscape photography in a global context and, more specifically, to perceptions of wildness in humanaltered environments such as large-scale renewable energy developments adjacent to iconic wild areas.
Surveys in preparation for the commissioning of the TRIUMF magnet
Creators: name: Gibb, Robert A.
Publisher: name: University of British Columbia
Year: 2011

description: This thesis was concerned with work in preparation for the commissioning of the TRIUMF cyclotron magnet. The experiments were centred around a 1/10 scale model of the cyclotron magnet. Computer calculation and model measurements were made of a model combination magnet. Extraction fields of the cyclotron were measured and the stripping foil locus determined. The interaction of the cyclotron magnet and the combination magnet was determined. A 1/10 scale model Triple Hall Probe was constructed and precisely calibrated. Its performance was tested and surveys made in the model. Finally the characteristics of the trim coils to be used in the cyclotron were measured.
Dynamical simulations of polaron transport in conjugated polymers with the inclusion of electron-electron interactions
Creators: name: Ma, Haibo
name: Schollwoeck, Ulrich
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dynamical simulations of polaron transport in conjugated polymers in the presence of an external time-dependent electric field have been performed within a combined extended Hubbard model (EHM) and Su-Schrieffer-Heeger (SSH) model. Nearly all relevant electron-phonon and electron-electron interactions are fully taken into account by solving the time-dependent Schrödinger equation for the $π$-electrons and the Newton's equation of motion for the backbone monomer displacements by virtue of the combination of the adaptive time-dependent density matrix renormalization group (TDDMRG) and classical molecular dynamics (MD). We find that after a smooth turn-on of the external electric field the polaron is accelerated at first and then moves with a nearly constant velocity as one entity consisting of both the charge and the lattice deformation. An ohmic region (3 mV/$\textÅ$ $\leq E_0\leq$ 9 mV/$\textÅ$) where the stationary velocity increases linearly with the electric field strength is observed for the case of $U$=2.0 eV and $V$=1.0 eV. The maximal velocity is well above the speed of sound. Below 3 mV/$\textÅ$ the polaron velocity increases nonlinearly and in high electric fields with strength $E_0\geq$ 10.0 mV/$\textÅ$ the polaron will become unstable and dissociate. The relationship between electron-electron interaction strengths and polaron transport is also studied in detail. We find that the the on-site Coulomb interactions $U$ will suppress the polaron transport and small nearest-neighbor interactions $V$ values are also not beneficial to the polaronic motion while large $V$ values favor the polaron transport.
Want, don't, can't : student second language enrolment in Tasmania
Creators: name: Clayton, SM
Publisher: name: University Of Tasmania
Year: 2023

description: Languages education in Australian schools is struggling with declining enrolments in the post-compulsory years, resulting in fewer than one in five year twelve students graduating with a second language (L2). Understanding what motivational factors affect students' elective L2 enrolment is crucial to addressing this decline. The common perception is that the decline is caused by a lack of interest from students, as the majority discontinue their learning once it ceases to be mandatory. This study, grounded in the work of Zolt‚àö¬8n D‚àö‚àÇrnyei in the field of second language motivational research, found that this is a simplistic view and that the reasons for the decline are more complex than can be explained by reference merely to student interest. This project used mixed methods to investigate the reasons why Tasmanian students do or do not choose to enrol in an elective second language at school, and explored the relationship of motivational factors that affect their decisions. A state-wide survey of Year 9 to 12 students was conducted, followed by a series of focus group interviews with students from seven schools. Data analysis revealed that students' L2 enrolment status and informing motivations fell into five broad categories: those who enrolled and continued their L2 studies; those who enrolled but were doubtful of continuing in the future; those who wished to continue their L2 studies but were prevented from enrolling; those who discontinued after some elective language study; and those who did not continue and had no intention of enrolling in an elective L2. The key finding that contradicts the common perception is that a significant number of students are motivated to enrol in an elective L2, but are prevented from doing so by a range of personal and systemic barriers. Indeed, more than half of all students who were not enrolled in an elective L2 cited systemic barriers as reasons for non-enrolment, followed by the need to prioritise career-related or prerequisite subjects. The strongest influential factors for continuation in an elective language subject were an interest and enjoyment of languages and language learning, positive learning experiences, and the desire to travel and communicate. Overall, students who did not continue were influenced by the perception that they could communicate overseas using English, a lack of requirement for future orientations, the inability to fit the subject into their study course, the high workload, and the desired language not being offered. This research found that instead of a motivational dichotomy informed by interest in L2 between continuing and discontinuing students, there is a complex ensemble of factors that affect subject choice and enrolment decisions regarding elective second language learning.
Supplementary document for A Fiber-Connectorized Ultrafast-Laser-Inscribed K-Band Integrated Optics Beam Combiner for the CHARA Telescope Array - 6694913.pdf
Creators: name: Siliprandi, Jacopo
name: MacLachlan, David
name: Ross, Calum
name: Sharma, Tarun
name: Labadie, Lucas
name: Madhav, Kalaga
name: Nayak, Abani
name: Dinkelaker, Aline
name: Roth, Martin
name: Scott, Nicholas
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplement 1
Coarse-graining of inhomogeneous dust flow in General Relativity via isometric embeddings
Creators: name: Korzynski, Mikolaj
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a new approach to coarse-graining of variables describing dust flow in GR. It is based on assigning quasi-local shear, twist and expansion to 2-dimensional surfaces with the help of isometric embeddings into the 3-dimensional Euclidean space and deriving the time evolution equations for them. In contrast to the popular Buchert's scheme it allows to coarse-grain tensorial quantities in a coordinate-independent way. The framework can be used to estimate backreaction in inhomogeneous cosmological models.
description: Submitted to the Proceedings of the Invisible Universe Conference Paris 2009
Individual assessment of the golf swing using motion analysis and shot tracker technology
Creators: name: Canavan, Paul
name: Baron, Eric
name: Yang, Nicholas
Publisher: name: Loughborough University
Year: 2024

description: Engineering of Sport 15 - Proceedings from the 15th International Conference on the Engineering of Sport (ISEA 2024)
An optimal golf swing for an individual involves a highly coordinated movement sequence to hit the ball accurately and close to the pre-selected distance and location. The sport is very much an individualized endeavor, with many parts of a golf swing being unique to that individual due to many factors including individualized anthropometrics. Further, shoulder kinematic differences between drivers and 5-iron clubs have been observed. This is what makes golf a challenge to provide biomechanical analysis and feedback for there is no optimal generalized swing pattern for everyone and every club in the golf bag. Biomechanical motion analysis can play a vital role for golf coaches and players to provide valuable information to develop interventions and training programs based upon motion analysis of both the golfer and the club to maximize accuracy and distance. Further, shot tracker technology can provide instant feedback of a golfer’s performance. These tools used together can provide invaluable feedback to the golfer to improve overall performance. To date, there appears to be no known published work combining both wearable motion analysis and doppler radar technology analyzing both the person and the accuracy and distance of each golf shot. The purpose of this study was to analyze the relationship between shot distance for the driver and five iron related to shoulder and pelvic angular velocity using both motion analysis and shot tracker technology. To do this, motion capture technology was used with shot tracker technology to analyze different biomechanical metrics of the golf swing.
title: The Business Case for ESG
Creators: name: Boze, Brandon
name: Krivitski, Margarita
name: Larcker, David F.
name: Tayan, Brian
name: Zlotnicka, Eva
Publisher: name: Corporate Governance Research Initiative
Year: 2019

description: Recently, there has been debate among corporate managers, board of directors, and institutional investors around how best to incorporate ESG (environmental, social, and governance) factors into strategic and investment decision-making processes. In this Closer Look, we examine a framework informed by the experience of ValueAct Capital and include case examples. We ask: What is the investment horizon prevalent among most companies today? Do companies miss long-term opportunities because of a focus on short-term costs? How many companies have an opportunity to profitably invest in ESG solutions? What factors determine whether a company can profitably invest in ESG solutions? Can investors earn competitive risk-adjusted returns through ESG investments? If so, how widespread is this opportunity?
Non Uniform Black Strings and Critical Dimensions in $AdS_d$
Creators: name: Delsate, T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the equations of black strings in spacetimes of arbitrary dimensions with a negative cosmological constant and construct numerically non uniform black strings solutions. Our results suggest the existence of a localised black hole in asymptotically locally $AdS$ spacetime. We also present evidences for a dependence of the critical dimension on the horizon radius.The critical dimension represents the dimension where the order of the phase transition between uniform and non uniform black string changes. Finally, we argue that both, the regular asymptotically locally $AdS$ solution and $AdS$ black string solutions with a very small horizon radius, present a negative tension. This turns out to be an unexpected feature of the solutions.
description: 13 pages, 5 figures
Pion reactions with few-nucleon systems
Creators: name: Baru, Vadim
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We report about the recent results for s- and p-wave pion production in NN -> NNpi within effective field theory and discuss how the charge symmetry breaking in pn -> d pi^0 can be used to extract the strong contribution to the neutron-proton mass difference.
description: 9 pages, 7 figures, Proceeding of Sixth International Workshop on Chiral Dynamics, Bern, Switzerland, 6th - 10th July 2009, to be published in PoS
Double-Lepton Polarization Asymmetries in B->K_1 l^+ l^- Decay in Universal Extra Dimension Model
Creators: name: Sirvanli, Berin Belma
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Double-lepton polarization asymmetries for the exclusive decay B->K_1 l^+ l^- in the Universal Extra Dimension (UED) Model is studied. It is obtained that double-lepton polarization asymmetries are very sensitive to the UED model parameters. Experimental measurements of double lepton polarizations can give valuable information on the physics beyond the Standard Model (SM).
description: 15 pages, 10 figures
A spectacular giant arc in the massive cluster lens MACSJ1206.2-0847
Creators: name: Ebeling, H.
name: Ma, C. J.
name: Kneib, J. -P.
name: Jullo, E.
name: Courtney, N. J. D.
name: Barrett, E.
name: Edge, A. C.
name: Borgne, J. -F. Le
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We discuss the X-ray and optical properties of the massive galaxy cluster MACSJ1206.2-0847 (z=0.4385), discovered in the Massive Cluster Survey (MACS). Our Chandra observation of the system yields a total X-ray luminosity of 2.4 x 10^45 erg/s (0.1-2.4 keV) and a global gas temperature of (11.6 +/- 0.7) keV, very high values typical of MACS clusters. In both optical and X-ray images MACSJ1206 appears close to relaxed in projection, with a pronounced X-ray peak at the location of the brightest cluster galaxy (BCG); we interpret this feature as the remnant of a cold core. A spectacular giant gravitational arc, 15" in length, bright (V~21) and unusually red (R-K=4.3), is seen 20" west of the BCG; we measure a redshift of z=1.036 for the lensed galaxy. From our HST image of the cluster we identify the giant arc and its counter image as a seven-fold imaged system. An excess of X-ray emission in the direction of the arc coincides with a mild galaxy overdensity and could be the remnant of a minor merger with a group of galaxies. We derive estimates of the total cluster mass as well as of the mass of the cluster core using X-ray, dynamical, and gravitational-lensing techniques. For the mass enclosed by the giant arc (r<119 kpc) our strong-lensing analysis based on HST imaging yields a very high value of 1.1 x 10^14 M_sun, inconsistent with the much lower X-ray estimate of 0.5 x 10^14 M_sun. Similarly, the virial estimate of 4 x 10^15 M_sun for the total cluster mass, derived from multi-object spectroscopy of 38 cluster members, is significantly higher than the corresponding X-ray estimate of 1.7 x 10^15 M_sun. We take the discrepant mass estimates to be indicative of substructure along the line of sight during an ongoing merger event, an interpretation that is supported by the system's very high velocity dispersion of 1580 km/s.
description: 13 pages, 14 figures, accepted for publication in MNRAS
U.S. freshwater mussel occurrence data
Creators: name: Pfeiffer, John
name: Dubose, Traci
name: Keogh, Sean
Publisher: name: Zenodo
Year: 2023
Subjects: natural history collections
freshwater mussel
Conservation

description: Natural history collections are uniquely positioned to chronicle biodiversity change and are a fundamental data source in taxon-based research and conservation. With 85 species federally protected under the Endangered Species Act, freshwater mussels are one of the most imperiled animal assemblages in the United States and are the focus of extensive conservation efforts. Unfortunately, natural history collections data are underleveraged in taxon-based conservation efforts because much of the data are decentralized and nonstandard, and thus, difficult to access and analyze. Our objective herein is to synthesize, standardize, enrich, and distribute digitized US freshwater mussel collections data to better suit the needs of conservation stakeholders. We aggregated specimen records from 45 US natural history collections and enriched these records by programmatically standardizing taxonomic information, flagging potentially problematic records, and joining records with freshwater-specific spatial frameworks and their associated hydrological metadata. The assembled dataset includes 410,813 records from 302 species and 1,538 hydrological units (8 digit-level). Using these enriched records, we estimated ecological attributes for 286 freshwater mussel species including aspects of range size and hydrological preferences. Imperiled species had significantly fewer occurrences, smaller area of occupancy, and experienced greater declines in area of occupancy than non-imperiled species. Imperiled species also had higher stream order and discharge preferences than non-imperiled species. The synthesized, standardized, and enriched natural history collections data and our novel ecological estimates have revealed and corroborated important insights into freshwater mussel diversity, distribution, and decline. Stakeholders can access this data via download or interactively at the companion web app, MusselMapR (https://musselmapr.shinyapps.io/hic_sunt_naiades/).
description: Funding provided by: Smithsonian InstitutionCrossref Funder Registry ID: https://ror.org/01pp8nd67Award Number: