cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Reframing Care: Sexual Violence, Mental Health, and Feminist Activism, 1971-1997
Creators: name: Hearne, Elizabeth
Publisher: name: University of Illinois Chicago
Year: 2021

description: This dissertation investigates the changing conversations around rape and sexual assault in the United States during the 1970s through the 1990s, and examines two groups who were particularly important in shaping these changes: feminist mental health professionals and activists in the women’s movement, especially those involved in anti-rape activism. These two groups, working separately and together, created new paradigms for understanding the effects of sexual violence and how best to address the needs of the victims who sought their assistance. These groups helped spur profound new developments in psychological and psychiatric research, practice, and professional knowledge. Exploring this era reveals an important moment of collaboration between the licensed and unlicensed, between clinician and patient, and between activist and establishment.
While lay activists were instrumental in driving this sea changes within the mental health world, they also brought their own ethics and strategies to their work with victims of sexual violence. Their strategies were often shaped by, and sometimes were inseparable from, advocacy for women, an attunement to racial and class injustice, and a belief that personal, group, and community considerations had to infuse their anti-rape activism and their approaches with victims. Cultural and spiritual practices—and activism itself—could offer unique forms of meaning and solace as well. This dissertation explores the women who found powerful ways to change existing narratives about sexual violence and the treatment of victims, and offers a model for how individuals and groups can change powerful and persistent cultural and psychomedical narratives.
Quasiparticle diffusion based heating in superconductor tunneling micro-coolers
Creators: name: Pannetier, Bernard
name: Courtois, Herve'
name: Rajauria, Sukumar
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In a hybrid Superconductor - Insulator - Normal metal tunnel junction biased just below the gap, the extraction of hot electrons out of the normal metal results in electronic cooling effect. The quasiparticles injected in the superconductor accumulate near the tunnel interface, thus increasing the effective superconductor temperature. We propose a simple model for the diffusion of excess quasiparticles in a superconducting strip with an additional trap junction. This diffusion model has a complete analytic solution, which depends on experimentally accessible parameters. We find that the accumulated quasiparticles near the junction reduce the efficiency of the device. This study is also relevant to more general situations making use of superconducting tunnel junctions, as low temperature detectors.
description: 4 pages, 3 figures
How initial and boundary conditions affect protoplanetary migration in a turbulent sub-Keplerian accretion disc: 2D non viscous SPH simulations
Creators: name: Costa, Vincenzo
name: Pirronello, Valerio
name: Belvedere, Gaetano
name: Del Popolo, Antonino
name: Molteni, Diego
name: Lanzafame, Giuseppe
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Current theories on planetary formation establish that giant planet formation should be contextual to their quick migration towards the central star due to the protoplanets-disc interactions on a timescale of the order of $10^5$ years, for objects of nearly 10 terrestrial masses. Such a timescale should be smaller by an order of magnitude than that of gas accretion onto the protoplanet during the hierarchical growing-up of protoplanets by collisions with other minor objects. These arguments have recently been analysed using N-body and/or fluid-dynamics codes or a mixing of them. In this work, inviscid 2D simulations are performed, using the SPH method, to study the migration of one protoplanet, to evaluate the effectiveness of the accretion disc in the protoplanet dragging towards the central star, as a function of the mass of the planet itself, of disc tangential kinematics. To this purpose, the SPH scheme is considered suitable to study the roles of turbulence, kinematic and boundary conditions, due to its intrinsic advective turbulence, especially in 2D and in 3D codes. Simulations are performed both in disc sub-Keplerian and in Keplerian kinematic conditions as a parameter study of protoplanetary migration if moderate and consistent deviations from Keplerian Kinematics occur. Our results show migration times of a few orbital periods for Earth-like planets in sub-Keplerian conditions, while for Jupiter-like planets estimates give that about $10^4$ orbital periods are needed to half the orbital size. Timescales of planet migration are strongly dependent on the relative position of the planet with respect to the shock region near the centrifugal barrier of the disc flow.
description: 12 pages, 18 figures, under review by MNRAS
\Tip in three blops of milk....\" : an ethnographic study of the development of mathematical concepts and language in Early Childhood Education"
Creators: name: Dunn, Eva
Publisher: name: University Of Tasmania
Year: 2023

description: It is becoming increasingly obvious that many students taught according to traditional methods do not develop a thorough understanding of the concepts of mathematics. Much of what they can do is mechanically learnt with no links to a body of interrelated concepts, to the web of meanings which lie at the heart of a quantitative view of the world. It would seem that what is lacking in the teaching of mathematics is the teaching of its language. A language is truly learnt when it can be used to communicate ideas to others and can provide a medium for further thought. The aim of this study was to take elements from the theory of language and of mathematics education and apply them in a classroom setting. The study employed ethnographic methods to record the interactions and the outcomes of the curriculum. This dissertation explores the way the curriculum worked for a group of low achieving students, and attempts to make further suggestions for improving practice. Eleven six and seven year old children, pupils of a country primary school in Tasmania, were selected by their teachers to participate in this study. They were judged to be poor performers in both language and mathematics. These children were taught as a small group for five weeks, one hour each school day by the researcher. All the mathematical activities were presented in a narrative context, they all had reference to the children's lives, and the work itself was carried out using concrete materials. The classroom climate and general teaching approach was very much like that described by Bickmore-Brand (1993) whose teaching in mathematics followed the language teaching advocated by Cambourne. Children were given practice at speaking about mathematics by frequent audio taping at the conclusion of sessions. The information collection methods employed were those required of ethnographic studies, including the participant observer, her diary of reflections, children's taped language, children's work and the remarks of their teachers. Individual testing sessions were conducted during the sixth week of the study. The results showed, that compared with three control children, the participating children had learnt many new concepts, and could apply them in similar as well as in challenging new situations. Their taped language improved markedly, as did the children's ability to express themselves mathematically and to understand directions concerning mathematical problems. The happy atmosphere of the sessions, the good relationships which developed, and the increased competence of the children in both mathematics and language, confirm the choice of the teaching methodology. The problems encountered, the children whose behaviour was at times negative, have provided ideas for further developments.
title: Ramsey Marine Nature Reserve Fisheries Management Zone: A novel approach to mitigating the socioeconomic impacts of an MPA
Creators: name: Dignan, Sam
name: Bloor, Isobel
name: Duncan, Peter
name: Kaiser, Michel
name: Murray, Lee
name: Kennington, Kevin
name: Gell, Fiona
Publisher: name: ASC 2014 - Theme session B
Year: 2023
Subjects: Technologies and data
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. In 2009 Ramsey Bay, a small but nonetheless economically important area in the Isle of Man (IOM), was closed to scallop dredging. Subsequently the area was designated a Marine Nature Reserve (MNR), within which a Fisheries Management Zone (FMZ) was established. The lease to manage fishing within the FMZ is held by local fishermen through their Producer’s Organisation, the Manx Fish Producers Organisation (MFPO). In December 2013, following extensive cooperation between fishers, scientists and government a strictly controlled fishery, targeting Pecten maximus, was prosecuted within the FMZ for the first time since its closure. The MFPO adopted a novel cooperative approach contracting three of their member boats to attain the total allowable catch (TAC) and sharing the profits between its members. The fishery afforded a unique opportunity to evaluate the efficacy and socioeconomics of such a strategy. The fishing strategy demonstrated extensive interaction between economic and ecological interests and resulted in the restoration of a portion of the economic capital lost to fishers whilst maintaining the ecological integrity of the MNR.
EPR of substitutional and of charge compensated Fe3+ in anatase (TiO2) and its temperature dependence
Creators: name: Horn, Manfred
Publisher: name: University of British Columbia
Year: 2011

description: Paramagnetic resonances were observed in natural single crystals of anatase between 1 °K and 1230 °K and are interpreted as due to regular substitutional Fe(3+) (I) and to Fe (3+) combined with an oxygen vacancy at a nearest neighbour site (II) . The spin Hamiltonian parameter b(2)° of (I) decreases from +457 x 10(-4) cm(-1) at 1 °K almost linearly to -225 x 10(-4) cm(-1) at 1230 °K. This unusually strong temperature dependence of b(2)° and the observed temperature dependence of the orientation of the magnetic axes of spectrum (II) are both explained by assuming that the positions of the oxygen ions within the unit cell are temperature dependent.
title: Untangling E. coli Xer recombination through Atomic Force Microscopy
Creators: name: Provan, James Iain
Publisher: name: University of Glasgow
Year: 2021
Subjects: subject: DNA, Molecular Biology, Biochemistry, Topology, Recombination

description: The topology of DNA is crucial to cellular processes such as replication, transcription, and recombination. The protein-DNA interactions of these processes can induce major topological changes into DNA molecules. The Xer site-specific DNA recombination system is a very well characterised topology-dependent mechanism. First discovered in Escherichia coli, Xer consists of a heterotetrametric tyrosine recombinase complex paired with several accessory proteins. Xer is involved in the resolution of chromosome dimers, and in the conversion of supercoiled plasmid multimers to monomeric states. Both Xer-dependent mechanisms are required for equal and faithful segregation of E. coli DNA at cell division. There has long been an aim to observe the topological complexity of DNA, e.g., the products of site-specific recombination, on a single molecule level. Existing techniques such as rotary shadowing electron microscopy have seen little recent development and have significant practical limitations. In this thesis I demonstrate the application of high-resolution Atomic Force Microscopy (AFM) in liquid to the topological determination of DNA knots and catenanes. The E. coli Xer synapse was used as a tool to generate knotted or catenated DNA in vitro. Several aspects of knot and catenane generation e.g., reaction conditions, substrate length modifications, repeatability, and DNA purification were probed in depth. Several putative DNA knots were classified from AFM micrographs by tracing their path and assigning chirality based on the topographical profile of the DNA-DNA crossovers. Every possible knotted configuration of three AFM-traced DNA molecules was determined by hand. These were most likely 4-node knot (4-1), 5-1* twist-knot, and an unknot. Subsequently, a 4-node catenated DNA with a homogenous topological nature was studied by AFM to focus solely on the discrimination of over-crossing DNA strands versus under-crossing strands. Individually, several AFM micrographs of 4-node catenanes were of extremely high image quality, where their crossovers could be readily determined and were consistent with prior biochemical evidence of chirality. However, the majority of catenanes adopted configurations where their crossings were clustered indecipherably. Only 13% of the traced 4-node catenanes were of conformations that might be conducive to the determination of crossover directionality. The work described in this thesis represents the first topological study of DNA knots and catenanes by AFM, and demonstrated the utility of this technique. Future studies of DNA knots and catenanes by AFM will require further optimisation of sample deposition conditions and imaging parameters to reduce the tendency of DNA molecules to cluster together, and to emphasise the directionality of knotted or catenated DNA crossovers.
Correcting velocity dispersions of dwarf spheroidal galaxies for binary orbital motion
Creators: name: Minor, Quinn E.
name: Martinez, Greg
name: Bullock, James
name: Kaplinghat, Manoj
name: Trainor, Ryan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We show that measured velocity dispersions of dwarf spheroidal galaxies from about 4 to 10 km/s are unlikely to be inflated by more than 20% due to the orbital motion of binary stars, and demonstrate that the intrinsic velocity dispersions can be determined to within a few percent accuracy using two-epoch observations with 1-2 years as the optimal time interval. The crucial observable is the threshold fraction--the fraction of stars that show velocity changes larger than a given threshold between measurements. The threshold fraction is tightly correlated with the dispersion introduced by binaries, independent of the underlying binary fraction and distribution of orbital parameters. We outline a simple procedure to correct the velocity dispersion to within a few percent accuracy by using the threshold fraction and provide fitting functions for this method. We also develop a methodology for constraining properties of binary populations from both single- and two-epoch velocity measurements by including the binary velocity distribution in a Bayesian analysis.
title: Digital image-based Area/Weight-Models improve weight estimates of important North Sea fish
Creators: name: Krau, Florian
name: Hammann, Sven
name: Gröger, Joachim
Publisher: name: ASC 2014 - Theme session B
Year: 2023
Subjects: Technologies and data
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Rapid development of digital imaging and subsequent processing hard- and software makes new information accessible to research. Pictures or video footage can be used to estimate weight of individual fish if underlying species-dependent relationships of geometric measures are known. For this purpose Whiting (Merlangius merlangus) were individually measured, weighed and photographed during July/August 2014. A logarithmic power model log(Y) = log(a)+b*log(X) was used to estimate weight from total visible area. Fit was high (R²>0.99) and the model showed strong performance (mean deviation 0.42g +/- 4.2 Std) when tested against previously measured Whiting from Winter 2013/2014. Our results show that with an Area/Weight-Relationship it is possible to accurately estimate weight of individual Whiting (and other species) from digital images with advantages over traditionally used Length/Weight-Relationships. Applications range from conveyor belt analysis on board of commercial or fisheries research vessels to continuous video based monitoring of MPAs or ROV video footage.
A Spectroscopic Study of Young Stellar Objects in the Serpens Cloud Core and NGC 1333
Creators: name: Winston, E.
name: Megeath, S. T.
name: Wolk, S. J.
name: Hernandez, J.
name: Gutermuth, R.
name: Muzerolle, J.
name: Hora, J. L.
name: Covey, K.
name: Allen, L. E.
name: Spitzbart, B.
name: Peterson, D.
name: Myers, P.
name: Fazio, G. G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present spectral observations of 130 young stellar objects (YSOs) in the Serpens Cloud Core and NGC 1333 embedded clusters. The observations consist of near-IR spectra in the H and K-bands, from SpeX on the IRTF and far-red spectra (6000 - 9000 A) from Hectospec on the MMT. These YSOs were identified in previous Spitzer and Chandra observations, and the evolutionary classes of the YSOs were determined from the Spitzer mid-IR photometry. With these spectra, we search for corroborating evidence for the pre-main sequence nature of the objects, study the properties of the detected emission lines as a function of evolutionary class, and obtain spectral types for the observed YSOs. By comparing the positions of the YSOs in the HR diagrams with the pre-main sequence tracks of Baraffe (1998), we determine ages of the embedded sources and study the relative ages of the YSOs with and without optically thick circumstellar disks. The apparent isochronal ages of the YSOs in both clusters range from less than 1 Myr to 10 Myr, with most objects below 3 Myr. The observed distribution of ages for the Class II and Class III objects are statistically indistinguishable. We examine the spatial distribution and extinction of the YSOs as a function of their isochronal ages. We find the sources < 3 Myr to be concentrated in the molecular cloud gas while the older sources are spatially dispersed and are not deeply embedded. Nonetheless, the sources with isochronal ages > 3 Myr show all the characteristics of young stellar objects in their spectra, their IR spectral energy distributions, and their X-ray emission.
description: 42 Pages, 14 Figures, accepted to AJ
Women's education & careers - the hidden agenda
Creators: name: Davies, Elizabeth Griffiths
Publisher: name: University Of Tasmania
Year: 2023

description: Women's liberation, feminism and gender equality are terms which have been bandied around for decades, yet have women's roles in society really changed? Where are the executive business women in Corporate Affairs? Where are all the female Principals in schools? Why are girls still opting for subject choices and careers in only five main areas, such as community services, retail trade and property? Why are women leaving successful careers to have children and then opting for lesser part-time work? Why are women still working in low paid sex-segregated jobs earning less than their male counterparts? Why are women choosing to do the majority of housework? Are the nineties the decade of true equality? What hidden agenda prevents women from achieving their potential in education and careers? This study will explore the research on women, their careers and educational opportunities which reveals that in Australia's sex-segregated society they are a very unequal part. It reveals that women's hidden agenda lies in their dual roles of performing unpaid work in the home, rearing children and working in salutary low paid sex-segregated areas of employment. Society's social construction of gendered roles for women and men is examined in terms of their being in direct opposition to one another, with the emphasis of the private sphere of the home dominating women's lives and the public sphere of paid work dominating men's lives. (Connell, 1987, Oakley, 1990, Sampson, 1991, and Maclean, 1992).
Extremal black holes and nilpotent orbits
Creators: name: Bossard, Guillaume
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The stationary solutions of a large variety of (super)gravity theories can be described within a non-linear sigma model G / H* coupled to Euclidean gravity in three-dimensions, for which G is a simple group and H* a non-compact real form of its maximal compact subgroup. The absence of naked singularities in four dimensions requires the G Noether charge in 3D to satisfy a characteristic equation that determines it in function of the mass, the NUT charge and the electro-magnetic charges of the solution. It follows that the Noether charge associated to extremal black holes must lie in a certain Lagrangian submanifold of a nilpotent orbit of G. Constructing a suitable parameterisation of this Lagrangian, we are able to determine the so-called `fake superpotential' that governs the radial dependency of the scalar fields.
description: Invited talk at the XVI International Congress on Mathematical Physics, Prague, 3-8 August 2009
title: Adaptive management based on monitoring of marine protected areas in California
Creators: name: Botsford, L.W.
name: White, J.W.
name: Moffitt, E.A.
name: Nickols, K.J.
name: Carr, M. E.
name: Cordoleani, F.
name: Barnett, L. A. K.
name: Baskett, M. L.
name: Hastings, A.
Publisher: name: ASC 2014 - Theme session B
Year: 2023
Subjects: Technologies and data
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Adaptive management of marine protected areas (MPAs) requires an approach for comparing expected responses to results from in situ monitoring. We describe this approach for recently implemented MPAs in central California. Because the spatial planning process for these MPAs was based on long-term projections, we developed new models describing the short-term, transient response of populations to the removal of fishing mortality. These models showed how the initial response, a ‘filling in’ of the age structure as fish grow older and larger, depends on the prior fishing mortality rate and the natural mortality rate. Spatio-temporal modeling showed how monitoring results depend on simple rules involving MPA size and both larval and adult movement rates. Simulations of expected responses for California rockfish species showed that natural variability in recruitment substantially lengthens the time required to detect positive changes from MPAs. These indications underscore the importance of accounting for uncertainty in the analysis and presentation of monitoring results. These findings indicate that the observed patterns of no increases in the size or abundance for three rockfish species (genus Sebastes) at three different locations over the first seven years of MPA existence is not an unexpected result, given the levels of variability in larval recruitment in those populations.
Student participation in decision-making : a review of student participation in decision-making and its validity in terms of learning outcomes and social values
Creators: name: Fuglsang, AJ
Publisher: name: University Of Tasmania
Year: 2023

description: Student participation in decision-making in secondary education has gained a great deal of respectability over the last two decades. Historically it is supported by contributions from both political and educational theorists. Recent growth in the acceptance of the approach is attributed to the influence of social values and government sponsorship. There are concerns that the approach is primarily a product of social values and that it has a limited potential to determine educational outcomes. The discussion focuses on these concerns and develops the proposition that student participation serves to fulfil a number of fundemental educational purposes. It is recognised that there is a limitation in the availability of empirical evidence to substantiate the case for student participation. In many cases participatory approaches are responses to new problems that are the result of rapid and recent social change. As such they can only be plausible and not proven at this stage. It is suggested that : democratic socialisation is most effectively achieved through an experience based approach which accommodates all the varied forms of democratic decision-making that function in our society : Individual skill in problem solving can be enhanced through participation in decision-making: The integration of the student in the school community through a sharing of decision-making responsibility can facilitate the achievement of a wide range of educational goals as a product of increased student motivation. The question of the 'common curriculum' is examined and documents from the United Kingdom and the United States considered to determine the degree of constraint that this movement may impose on student participation. The notion of 'client rights' is evaluated and it is concluded that any obligation educators have to implement student decision-making strategies springs from considerations of educational outcomes. Subject choice and student representation are presented as limited approaches to student participation. It is recommended that a cross curricula approach be taken to the inclusion of a wide range of decision-making experience. A selection of approaches to student participation is presented. Approaches that involve students at a number of decision-making levels are described. These include student contributions to curriculum planning, student representation programmes and classroom approaches, Curriculum Negotiation and Personal Interest Projects. The discussion is based on a number of working definitions that are established for the key concepts of 'participation', 'decision-making' and 'client rights'.
Solar system constraints on f(G) gravity models
Creators: name: De Felice, Antonio
name: Tsujikawa, Shinji
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss solar system constraints on f(G) gravity models, where f is a function of the Gauss-Bonnet term G. We focus on cosmologically viable f(G) models that can be responsible for late-time cosmic acceleration. These models generally give rise to corrections of the form epsilon*(r/rs)^p to the vacuum Schwarzschild solution, where epsilon = H^2 rs^2 << 1, rs is the Schwarzschild radius of Sun, and H is the Hubble parameter today. We generally estimate the strength of modifications to General Relativity in order to confront models with a number of experiments such as the deflection of light and the perihelion shift. We show that cosmologically viable f(G) models can be consistent with solar system constraints for a wide range of model parameters.
description: 19 pages, uses ReVTeX
Method to measure line shapes and relative transition probabilities
Creators: name: Camm, David Malcolm
Publisher: name: University of British Columbia
Year: 2011

description: An accurate method to measure line shapes and relative transition probabilities between transitions with a common lower state has been developed. Argon was used as a test gas to show that this method is more accurate than other current procedures. The experimental observations agree well with the theory developed in this thesis. It is shown that the ratio of the Lorentzian to Doppler half-widths of the line can be measured to a precision of 10% when the Doppler width is as much as one hundred times larger than the Lorentzian half-width. The relative transition probabilities can be measured to within 10% for weak lines and to 1 % for strongly absorbing lines. The line shapes measured are consistent with those predicted by Griem (2) and the relative transition probabilities agree well with the values given by Wiese (5). This absorption experiment uses a glow discharge for the source and absorber. The absorption tube is placed between Nicol prisms and a longitudinal magnetic field is applied to Zeeman split the absorption lines. The transmission as a function of field depends on both the transition probabilities and the line shape of the absorption lines. The high resolving power required to measure the line shapes is obtained from the Zeeman splitting of the absorption lines rather than a spectrometer. The method is an inexpensive, accurate way to measure line shapes and relative transition probabilities especially suited for strongly absorbing lines.
A Far-UV Survey of M 80: X-ray Source Counterparts, Strange Blue Stragglers and the Recovery of Nova T Sco
Creators: name: Dieball, Andrea
name: Long, Knox S.
name: Knigge, Christian
name: Thomson, Grace S.
name: Zurek, Dave R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Using the ACS on HST, we have surveyed the FUV and NUV populations in the core region of M80. The CMD reveals large numbers of blue and extreme horizontal branch stars and blue stragglers, as well as approx. 60 objects lying in the region of the CMD where accreting and detached white dwarf binaries are expected. Overall, the blue straggler stars are the most centrally concentrated population, with their radial distribution suggesting a typical blue straggler mass of about 1.2 Msun. However, counterintuitively, the faint blue stragglers are significantly more centrally concentrated than the bright ones and a Kolmogorov-Smirnov test suggest only a 3.5% probability that both faint and bright blue stragglers are drawn from the same distribution. This may suggest that (some) blue stragglers get a kick during their formation. We have also been able to identify the majority of the known X-ray sources in the core with FUV bright stars. One of these FUV sources is a likely dwarf nova that was in eruption at the time of the FUV observations. This object is located at a position consistent with Nova 1860 AD, or T Scorpii. Based on its position, X-ray and UV characteristics, this system is almost certainly the source of the nova explosion. The radial distribution of the X-ray sources and of the cataclysmic variable candidates in our sample suggest masses > 1 Msun.
description: 41 pages, including 8 figures, accepted for publication in ApJ
Variants of the Dark Left-Right Gauge Model: Neutrinos and Scotinos
Creators: name: Ma, Ernest
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the recently proposed dark left-right gauge model (DLRM) of particle interactions, the usual left-handed lepton doublet (nu,e)_L transforming under SU(2)_L is accompanied by the UNUSUAL right-handed fermion doublet (n,e)_R transforming under SU(2)_R, where n_R is NOT the Dirac mass partner of nu_L. In this scenario, whereas nu_L is certainly a neutrino, n_R should be considered a SCOTINO, i.e. a dark-matter fermion. Variants of this basic idea are discussed, including its minimal SCOTOGENIC realization.
description: 9 pages, 1 figure, 2 references added
title: Predicting diversity hotspots using data from scientific fisheries surveys An example using Decapod species
Creators: name: Püts, A.K. Miriam
name: Probst, W. Nikolaus
name: Panten, Kay
Publisher: name: ASC 2014 - Theme session B
Year: 2023
Subjects: Technologies and data
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. To meet requirements for the ecosystem approach implemented in the Marine Strategy Framework Directive (MSFD), it is necessary to intensify existing monitoring programs. Apart from the data gathered on targeted species on annual fishery surveys, data on benthic species are recorded as well. This approach uses the existing data of epibenthic invertebrate species in fishery surveys for distribution monitoring
Phases of Augmented Hadronic Light-Front Wave Functions
Creators: name: Brodsky, Stanley J.
name: Pasquini, Barbara
name: Xiao, Bowen
name: Yuan, Feng
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is an important question whether the final/initial state gluonic interactions which lead to naive-time-reversal-odd single-spin asymmetries and diffraction at leading twist can be associated in a definite way with the light-front wave function hadronic eigensolutions of QCD. We use light-front time-ordered perturbation theory to obtain augmented light-front wave functions which contain an imaginary phase which depends on the choice of advanced or retarded boundary condition for the gauge potential in light-cone gauge. We apply this formalism to the wave functions of the valence Fock states of nucleons and pions, and show how this illuminates the factorization properties of naive-time-reversal-odd transverse momentum dependent observables which arise from rescattering. In particular, one calculates the identical leading-twist Sivers function from the overlap of augmented light-front wavefunctions that one obtains from explicit calculations of the single-spin asymmetry in semi-inclusive deep inelastic lepton-polarized nucleon scattering where the required phases come from the final-state rescattering of the struck quark with the nucleon spectators.
description: 10 pages, 1 figure
title: A Question of Scale: Evaluating the impact of marine protected areas off of New England on groundfish productivity
Creators: name: Kerr, Lisa A.
name: Kritzer, Jake
name: Cadrin, Steven X.
Publisher: name: ASC 2014 - Theme session B
Year: 2023
Subjects: Technologies and data
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. In this study, we examined the effect of MPAs in New England waters on Atlantic cod, yellowtail flounder, and haddock using before-after-control-impact (BACI) analysis of bottom trawl survey data from the Northeast Fisheries Science Center. We critically evaluated the spatial scale for assessing impacts (as individual MPAs or networks of MPAs) and how we define control areas for comparison with MPAs (habitat within the same survey strata or within a certain distance from a MPAs boundary). We identified positive effects of certain MPAs on abundance and biomass indices of specific groundfish. In some cases, the significance of the response depended on the spatial and temporal scale of the analysis. Comprehensive evaluation of the appropriate spatial and temporal scales for assessing MPA impacts is needed for robust evaluation the effectiveness of MPAs in achieving management goals.
Unconventional Bose-Einstein Condensations Beyond the "No-node" Theorem
Creators: name: Wu, Congjun
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Feynman's "no-node" theorem states that the conventional many-body ground-state wavefunctions of bosons in the coordinate representation is positive-definite. This implies that time-reversal symmetry cannot be spontaneously broken. In this article, we review our progress in studying a class of new states of unconventional Bose-Einstein condensations beyond this paradigm. These states can either be the long-lived metal-stable states of ultra-cold bosons in high orbital bands in optical lattices as a result of the "orbital-Hund's rule" interaction, or the ground states of spinful bosons with spin-orbit coupling linearly dependent on momentum. In both cases, Feynman's argument does not apply. The resultant many-body wavefunctions are complex-valued and thus break time-reversal symmetry spontaneously. Exotic phenomena in these states include the Bose-Einstein condensation at non-zero momentum, the ordering of orbital angular momentum moments, the half-quantum vortex, and the spin texture of skyrmions.
Fermi surface and order parameter driven vortex lattice structure transitions in twin-free YBa2Cu3O7
Creators: name: White, J. S.
name: Hinkov, V.
name: Heslop, R. W.
name: Lycett, R. J.
name: Forgan, E. M.
name: Bowell, C.
name: Straessle, S.
name: Abrahamsen, A. B.
name: Laver, M.
name: Dewhurst, C. D.
name: Kohlbrecher, J.
name: Gavilano, J. L.
name: Mesot, J.
name: Keimer, B.
name: Erb, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on small-angle neutron scattering studies of the intrinsic vortex lattice (VL) structure in detwinned YBa2Cu3O7 at 2 K, and in fields up to 10.8 T. Because of the suppressed pinning to twin-domain boundaries, a new distorted hexagonal VL structure phase is stabilized at intermediate fields. It is separated from a low-field hexagonal phase of different orientation and distortion by a first-order transition at 2.0(2) T that is probably driven by Fermi surface effects. We argue that another first-order transition at 6.7(2) T, into a rhombic structure with a distortion of opposite sign, marks a crossover from a regime where Fermi surface anisotropy is dominant, to one where the VL structure and distortion is controlled by the order-parameter anisotropy.
description: 4 pages, 3 figures (2 color), minor changes
Coarse-graining dynamics by telescoping down time-scales: comment for Faraday FD144
Creators: name: Louis, Ard A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: I briefly review some concepts related to coarse-graining methods for the dynamics of soft matter systems and argue that such schemes will almost always need to telescope down the physical hierarchy of time-scales to a more compressed, but more computationally manageable, separation.
description: comment for Faraday Discussion 144: Multiscale Modelling of Soft Matter -- part of a much larger discussion on these topics
Expert systems for multiple uses
Creators: name: Crowther, Paul
Publisher: name: University Of Tasmania
Year: 2023

description: It should be possible to build expert systems which are capable of serving more than one purpose. Experts apply their knowledge in more than one way, for example they diagnose, they administer, they train, they schedule and they design using the expertise they have built up. Likewise it should be possible to build an expert system which can be used for more than a single task. The purpose of this study was to identify a problem domain where this could be done, pick an appropriate development methodology and build such an expert system. The system which was finally chosen as a candidate for development was the evaporator section of the chemical recovery process at Associated Pulp and Paper Mills pulp mill at Burnie. The system was initially built using knowledge about fault diagnosis but with the aim of using it as part of the operator training process. The third purpose was to optimise the maintenance cycle and hence reduce down times of all or part of the evaporator process by investigating key features at set intervals. Fast prototyping was used for the development of the system with knowledge being obtained via interview with multiple experts, operators' manuals, trouble shooting guides and evaporator log sheets. The system was developed on a cheap micro-computer based shell. It is operational and is currently being used as a fault diagnosis assistant and for training.
Theory of decay of superfluid turbulence in the low-temperature limit
Creators: name: Kozik, E. V.
name: Svistunov, B. V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We review the theory of relaxational kinetics of superfluid turbulence--a tangle of quantized vortex lines--in the limit of very low temperatures when the motion of vortices is conservative. While certain important aspects of the decay depend on whether the tangle is non-structured, like the one in the Kibble-Zurek picture, or essentially polarized, like the one that emulates the Richardson-Kolmogorov regime of classical turbulence, there are common fundamental features. In both cases, there exists an asymptotic range in the wavenumber space where the energy flux is supported by the cascade of Kelvin waves (kelvons)--precessing distortions propagating along the vortex filaments. At large enough wavenumbers, the Kelvin-wave cascade is supported by three-kelvon elastic scattering. At T=0 the dissipative cutoff of the Kelvin-wave cascade is due to the emission of phonons, in which an elementary process converts two kelvons with almost opposite momenta into one bulk phonon. Along with the standard set of conservation laws, a crucial role in the theory is played by the fact of integrability of the local induction approximation (LIA) controlled by the parameter Λ= \ln (λ/a_0), with λthe characteristic kelvon wavelength and a_0 the vortex core radius. While excluding a straightforward onset of the pure three-kelvon cascade, the integrability of LIA does not plug the cascade because of the availability of the kinetic channels associated with vortex line reconnections. We argue that the crossover from Richardson-Kolmogorov to the Kelvin-wave cascade is due to eventual dominance of local induction of a single line over the collective induction of polarized eddies, which causes the breakdown of classical-fluid regime and gives rise to a reconnection-driven inertial range.
description: Review article, 52 pages, 8 figures
Optimization of magnetic probe measurements in transient plasmas
Creators: name: Pachner, Jaroslav
Publisher: name: University of British Columbia
Year: 2011

description: A significant improvement in magnetic probe measurements has been achieved by developing a 3-coil magnetic probe which partially corrects for the boundary error, i.e. for the error caused by an exclusion of the plasma current from the space occupied by the probe. The spatial resolution C of the three coil probe is roughly one-half of the probe radius, a. For current distributions which vary slowly with distance (scale length, ƛ ) it is shown that the fractional error in the magnetic field is 0.2 (C/ ƛ)². For a conventional probe the error is at least four times as large. Also it has been shown that spurious signals arising from poor probe geometry (and which often obscure the signals produced by the measured magnetic fields themselves) can be eliminated by making use of the symmetry of the discharge fields. Measurements have been made on a Z-pinch discharge which confirm the claimed 3-coil probe performance by revealing a "fine" structure of the current distribution in helium in the filling pressure range 0.5 to 4 Torr. The measurements are presented in the form of a catalogue of the spatial distribution of magnetic field and the current density for a Z-pinch discharge in He and Ar. Using the probe measurements a qualitative model of the collapse of the current sheet for 4 Torr in He is developed which differs from previous models.
title: Baie ny Carrickey Closed Area: Managing fishermen to manage Marine Protected Areas
Creators: name: Bloor, Isobel
name: Duncan, Peter
name: Gell, Fiona
name: Dignan, Sam
name: Murray, Lee
name: Kaiser, Michel
Publisher: name: ASC 2014 - Theme session B
Year: 2023
Subjects: Technologies and data
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. The Isle of Man is at the forefront of introducing Marine Protected Areas (MPAs) and a unique scientific and management trial is currently being conducted in Baie ny Carrickey on its south coast. In April 2013 a ground breaking lease was signed between the Isle of Man Governments Department for Environment, Food and Agriculture (DEFA) and the newly formed Baie ny Carrickey Crustacean Fishery Management Association (BNCCFMA) handing responsibility for conservation and management of the stocks of crab and lobster in the Bay to the local fishermen. DEFA and its independent scientific advisors, Bangor University are now working with the BNCCFMA to closely monitor the success of the venture as part of a three year scientific trial, which began on 1st November 2013, with the fishermen responsible for collecting the required scientific data to evaluate the trial. This is a unique situation and should the trial prove successful then it may in due course become a template for other Manx fishermen taking on responsibility for managing their own fisheries.
Qualitative Criterion for Interception in a Pursuit/Evasion Game
Creators: name: Morgan, John A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49N75; 91A23

description: A qualitative account is given of a differential pursuit/evasion game. A criterion for the existence of an intercept solution is obtained using future cones that contain all attainable trajectories of target or interceptor originating from an initial position. A sufficient and necessary conditon that an opportunity to intercept always exist is that, after some initial time, the future cone of the target be contained within the future cone of the interceptor. The sufficient condition may be regarded as a kind of Nash equillibrium.
description: 8 pages; revsions and corrigenda