cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
'As a friend, as a trend, as an old memory' : popular music, memory and power
Creators: name: Strong, Catherine Louise
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: BF378.S65 S77 2008
subject: Memory Sociological aspects
subject: Popular culture Social aspects
subject: Collective memory
subject: Grunge music History and criticism
subject: Popular music History and criticism1901-1910

description: This thesis examines the relationship between memory and popular music. In order to make a claim for the validity of the field, popular music studies have often focused on the political and oppositional qualities of such music. It is argued in the thesis that although a form of popular culture such as grunge presents challenges to existing power relations, these challenges are often defused in the way grunge is remembered by the majority of fans. This is demonstrated through the examination of how collective memories are formed through the media, especially in dispersed groups, in contemporary societies. The formation of memory in this manner does not necessarily allow the media to control these memories or impose meaning, as memories are used to support and construct present identities. As a result, different groups may have different requirements of the past. The concept of memory is examined using the grunge musical 'movement' which was popular during the early 1990s. While exploring the sociology of memory, this thesis therefore also contributes to popular music studies, as few studies have investigated grunge in depth, or examined popular music retrospectively. The thesis uses interviews with grunge fans and content analysis of media articles about grunge as materials to explore the way popular culture is remembered. The main concepts used are collective memory, as theorised by Halbwachs and others, and Bourdieu's ideas of power, tastes and cultural fields. The thesis will use this context to demonstrate how gender roles can be reinscribed in retrospect, and how the life-stories of individuals can be used to reinforce prevailing myths and narratives within a society. It also suggests that class operates in a similar way through the influence that it has on tastes and lifestyles, as well as influencing what (and who) is remembered and the form that memory takes.
The many facets of heparanase : not just an extracellular matrix-degrading enzyme
Creators: name: Yi, Qing He
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: QP601.6 Y5 2010
subject: Glucuronidase
subject: Extracellular enzymes
subject: Genetic transcription Regulation

description: Heparanase is an endo-{u03B2}-glucuronidase that cleaves heparan sulfate and facilitates the passage of migrating cells through extracellular matrices (ECM), particularly basement membranes, as well as releasing heparan sulfate-bound growth factors from the ECM, whereby the released growth factors also aid wound healing and angiogenesis. Under normal physiological conditions heparanase aids the passage of leukocytes through subendothelial basement membranes and entry into sites of inflammation. It is also well established that heparanase, via a similar mechanism, plays a critical role in the metastatic spread of cancer. Recent studies have suggested, however, that heparanase has biological functions independent of its enzymatic activity. A number of studies have also reported the presence of beparanase in the nucleus of cells, with nuclear heparanase being associated with a favourable prognosis and cytoplasmic beparanase with poor survival in patients with lung, neck and gastric cancers. There is some evidence that nuclear heparanase expression is linked to cancer cell differentiation but, despite such reports, the functional relevance of nuclear heparanase remains to be established. This thesis describes experiments which demonstrate that nuclear heparanase can regulate transcription in resting and activated human T lymphocytes. Initial immunofluorescence studies revealed that nuclear heparanase is associated with euchromatin, and not heterochromatin, in both resting and activated human T cells. Subsequent single locus ChIP as well as genome wide ChIP-on-chip analysis, identified a cohort of immune-related target genes that are bound by heparanase at their promoter and coding regions. Additional knockdown and over-expression experiments showed that chromatin-tethered heparanase is required for the inducible transcription of several of these genes in activated T cells. In fact, at the chromatin level, it was found that heparanase regulates histone H3K4 and H3K9 methylation, probably by binding to target gene control regions in association with the demethylase LSD1. It has been further shown that association of heparanase with the LSD1 complex is accompanied by a lack of recruitment of the methylase, MLL, suggesting that heparanase plays a central role in mediating the on/off switch of inducible gene transcription. Taken together, these data suggest a hitherto unanticipated role for nuclear heparanase as a novel chromatin-associated regulator of transcription in mammalian cells.
Single Slepton Production in association with a single Top Quark at the Tevatron and LHC
Creators: name: Bernhardt, M. A.
name: Dreiner, H. K.
name: Grab, S.
name: Richardson, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We calculate the total cross section for single charged slepton production in association with a top quark at hadron colliders in the baryon triality (B$_3$) supersymmetric model. We compute event rates for the Tevatron and LHC. We study the signatures for different supersymmetric scenarios including neutralino and stau LSPs. We perform a detailed analysis with basic cuts for the B$_3$ operator $\lam^\prime_{231}$ using Monte Carlo simulations to show that the signal can be distinguished from the background at the LHC. In particular we employ the resulting lepton charge asymmetry.
description: 13 pages, 12 figures; references added, minor changes
CO emission from candidate photo-dissociation regions in M81
Creators: name: Knapen, J. H.
name: Allen, R. J.
name: Heaton, H. I
name: Kuno, N.
name: Nakai, N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context At least a fraction of the atomic hydrogen in spiral galaxies is suspected to be the result of molecular hydrogen which has been dissociated by radiation from massive stars. Aims In this paper, we extend our earlier set of data from a small region of the Western spiral arm of M81 with CO observations in order to study the interplay between the radiation field and the molecular and atomic hydrogen. Methods We report CO(1-0) observations with the Nobeyama 45 m dish and the Owens Valley interferometer array of selected regions in the Western spiral arm of M81. Results From our Nobeyama data, we detect CO(1-0) emission at several locations, coinciding spatially with HI features near a far-UV source. The levels and widths of the detected CO profiles are consistent with the CO(1-0) emission that can be expected from several large photo-dissociation regions with typical sizes of some 50x150 pc located within our telescope beam. We do not detect emission at other pointings, even though several of those are near far-UV sources and accompanied by bright HI. This non-detection is likely a consequence of the marginal area filling factor of photo-dissociation regions in our observations. We detect no emission in our Owens Valley data, consistent with the low intensity of the CO emission detected in that field by the Nobeyama dish. Conclusions We explain the lack of CO(1-0) emission at positions farther from far-UV sources as a consequence of insufficient heating and excitation of the molecular gas at these positions, rather than as an absence of molecular hydrogen.
description: 8 pages latex, 4 figures, Accepted for publication as a Research Note in Astronomy & Astrophysics
Kink Oscillations in Solar Coronal Loops with Elliptical Cross-Sections. I. the linear regime
Creators: name: Guo, Mingzhe
name: Li, Bo
name: Van Doorsselaere, Tom
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The cross sections of solar coronal loops are suggested to be rarely circular. We examine linear kink oscillations in straight, density-enhanced, magnetic cylinders with elliptical cross-sections by solving the three-dimensional magnetohydrodynamic equations from an initial-value-problem perspective. Motivated by relevant eigen-mode analyses, we distinguish between two independent polarizations, one along the major axis (the M-modes) and the other along the minor one (the m-modes). We find that, as happens for coronal loops with circular cross-sections, the apparent damping of the transverse displacement of the loop axis is accompanied by the accumulation of transverse Alfvénic motions and the consequent development of small-scales therein, suggesting the robustness of the concepts of resonant absorption and phase-mixing. In addition, two stages can in general be told apart in the temporal evolution of the loop displacement; a Gaussian time dependence precedes an exponential one. For the two examined density ratios between loops and their surroundings, the periods of the M-modes (m-modes) tend to increase (decrease) with the major-to-minor-half-axis ratio, and the damping times in the exponential stage for the M-modes tend to exceed their m-mode counterparts. This is true for the two transverse profiles we examine. However, the relative magnitudes of the damping times in the exponential stage for different polarizations depend on the specification of the transverse profile and/or the density contrast. The applications of our numerical findings are discussed in the context of coronal seismology.
description: 60 pages, 16 figures, accepted for publication in ApJ
Atomistic Modelling of Functionally Graded Cu-Ni Alloy and its Implication on the Mechanical Properties of Nanowires
Creators: name: Thakur, Md Shajedul Hoque
name: Islam, Mahmudul
name: Monisha, Nur Jahan
name: Bose, Pritom
name: Munshi, Md. Adnan Mahathir
name: Pial, Turash Haque
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Functionally graded materials (FGM) eliminate the stress singularity in the interface between two different materials and therefore have a wide range of applications in high temperature environments such as engines, nuclear reactors, spacecrafts etc. Therefore, it is essential to study the mechanical properties of different FGM materials. This paper aims at establishing a method for modelling FGMs in molecular dynamics (MD) to get a better insight of their mechanical properties. In this study, the mechanical characteristics of Cu-Ni FGM nanowires (NW) under uniaxial loading have been investigated using the proposed method through MD simulations. In order to describe the inter-atomic forces and hence predict the properties properly, EAM (Embedded atom model) potential has been used. The nanowire is composed of an alloying constituent in the core and the other constituent graded functionally along the outward radial direction. Simple Linear and Exponential functions have been considered as the functions which defines the grading pattern. The alloying percentage on the surface has been varied from 0% to 50% for both Cu-cored and Ni-cored nanowires. All the simulations have been carried out at 300 K. The L/D ratios are 10.56 and 10.67 for Cu-cored and Ni-cored NWs, respectively. This study suggests that Ultimate Tensile Stress and Young's modulus increase with increasing surface Ni percentage in Cu-cored NWs. However, in Ni-cored NWs these values decrease with the increase of surface Cu percentage. Also, for the same surface percentage of Ni in Cu-cored NW, the values are higher in linearly graded FGMs than that in exponentially graded FGMs. While in Ni-cored NWs, exponentially graded FGM shows higher values of UTS and E than those in linearly graded FGM. Thus, grading functions and surface percentages can be used as parameters for modulating the mechanical properties of FGM nanowires.
description: 8 pages, 3 Figures
Accurate eigenvalues of bounded oscillators
Creators: name: Fernandez, Francisco M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We calculate accurate eigenvalues of a bounded oscillator by means of the Riccati--Padé method that is based on a rational approximation to a regularized logarithmic derivative of the wavefunction. Sequences of roots of Hankel determinants approach the model eigenvalues from below with remarkable convergence rate.
Structure/activity evaluation of the bacterial membrane constituents involved in the immune system
Creators: name: Marzaioli, Alberto Maria
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: The Lipopolysaccharides (LPSs) are the major constituents of the outer membrane of Gram-negative bacteria and with capsular polysaccharides (CPSs) and peptidoglycan (PGN) are involved in the interaction with immune system receptors.
The chemical characterization of these molecules is fundamental for the elucidation of correlation existing between the structure and the biological activity.
The present thesis deals with the structural study of Lipopolysaccharides and Capsular polysaccharides from different Gram-negative bacteria.
The last part of thesis is focused on the preparation of the building block for the synthesis of new glycoconjugates with potential activity against HIV-1.
Hansenocaris undetermined
Creators: name: Olesen, Jørgen
name: Grygier, Mark J.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Maxillopoda
Hansenocarididae
Hansenocaris
Hansenocaris undetermined

description: Y-nauplius Type K
Figs 2, 5D–F, 13F–J
Type K – Dreyer et al. 2023a: figs 3, 5a, c, tables s1–s2.
Material examined
JAPAN – Okinawa, Sesoko I., laboratory pier, 26°38ʹ09.4ʺ N, 127°51ʹ55.2ʺ E • 5 LSN; 1991–2005 • 27 LSN, 6 of which molted to cyprids; 2018–2019 (Tables 1 and S1).
Description
LAST-STAGE NAUPLIUS (LSN). Lecithotrophic. Body widely ovate in dorso-ventral view; about 1.3 times as long as wide; cephalic shield very wide-ovate, with some discontinuity in body outline leading into trunk. In lateral view, trunk axis downturned ca 55° with respect to cephalic axis. Length 190–220 µm (ventral view in life, without dorso-caudal spine), greatest width ca 140 µm, greatest dorso-ventral thickness ca 65 µm. Labrum produced as sub-trapezoidal elevation with surface divided into facets by cuticular ridges; bearing total of five pores: three near midline posteriorly and one postero-lateral pair along left and right labral margins. Caudal end truncate, terminating in simple, ca 5 µm long dorso-caudal spine, this upturned ca 10° relative to trunk axis and flanked ventrally by pair of triangular furcal spines ca 10 µm long.
CYPRID VIEWED THROUGH CUTICLE OF LSN. Body generally transparent or weakly brownish. Cephalic shield often with a few small, transparent lipid vesicles along anterior margin. Posterior part of gut-like tube containing small, orange yolk granules. Telson twice as long as wide and significantly shorter than thorax, often not clearly demarcated from latter.
Identification and variation
Recognizable by the combination of its short, compact body, truncate caudal end and very small dorso-caudal spine. No significant variation recognized among specimens. Type K is the smallest lecithotrophic morphospecies treated in this work.
Distribution
Japan (Sesoko Island, Okinawa).
description: Published as part of Olesen, Jørgen & Grygier, Mark J., 2024, Taxonomic diversity of marine planktonic ' y-larvae' (Crustacea: Facetotecta) from a coral reef hotspot locality (Japan, Okinawa), with a key to y-nauplii, pp. 1-90 in European Journal of Taxonomy 929 (1) on pages 35-37, DOI: 10.5852/ejt.2024.929.2479, http://zenodo.org/record/10876286
The incurable Dr. Vaid : transgression, nation and the crisis in postcolonial Hindi criticism
Creators: name: Matthews, Rosalyn Clare
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: PK2098.V22 M38 2011
subject: Vaid, Krishna Baldev, 1927- Criticism and interpretation.
subject: Adultery in literature
subject: Nationalism and literature

description: Krishna Baldev Vaid is one of the most innovative and significant writers of Hindi fiction. He has relentlessly tested the boundaries of acceptability in Hindi fiction, and has refused to bow to pressure to conform to dominant paradigms regarding what Hindi literature should look like. The purpose of this thesis is to show that accusations that Vaid's fiction is obscene, un-Indian and lacking social engagement reflect certain anxieties regarding what constituted 'authentic' Indian literature in the postcolonial context. I argue that criticism of Vaid's more controversial work, and the subsequent relegation of his fiction to the periphery, has been the result of a set of postcolonial circumstances whereby establishing a modernity which could be asserted as both modern and Indian was considered important. In the case of Hindi literature ideas regarding what constituted 'good' Hindi fiction were heavily influenced by the social and political milieu of post-colonial India and the establishment of this uniquely Indian style of modernity. The thesis takes the themes of sexual transgression and nation as the basis for analysis of selected short fiction by Vaid to demonstrate how Vaid critiques the postcolonial discourse of the time. I argue that Vaid's fiction has been marginalized as a result of a postcolonial crisis in Hindi criticism, despite, or perhaps because of, his relentless challenging of normative discourse and his absolute refusal to conform to the boundaries dictated by his contemporaries. In the texts analysed Vaid uses rupture, dissonance, irony and wit to destabilize the predominating discourse regarding sexual transgression and nationalist sentiment. After analysis of selected fiction of Vaid based on the themes of sexual transgression and nation, the thesis proceeds to an outline of the crisis in postcolonial Hindi criticism, criticism of Vaid's work, and rebuttal from Vaid regarding the criticism he has received and the environment he considers it reflects. The main contribution of the thesis is to show that criticism of Vaid's fiction has been heavily influenced by postcolonial anxieties regarding Indianness and authenticity and that this reflects more about the environment in which he wrote than the literature itself. The evidence shows that rather than demonstrating a lack of social engagement, obscenity or undue imitation of Western models, Vaid is deeply engaged with the Indian postcolonial environment and challenges the very basis on which it was constructed.
Assessment of sensory impairment of the upper limb post-stroke by occupational therapists within the acute setting: A mixed methods study exploring current clinical practice
Creators: name: Byrne, D
name: Cahill, Liana
name: Barr, C
name: George, S
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 4201
subject: Allied health and rehabilitation science

description: Introduction: Sensory impairment of the upper limb is common after stroke and negatively impacts a stroke survivor’s recovery. The acute phase is a critical time for the identification of post-stroke somatosensory impairments and occupational therapists have a key role in the acute stroke setting. Sensory assessment and treatment practices of occupational therapists working in acute stroke settings are largely unknown. This study aims to describe current clinical practice and identify the barriers and enablers for the assessment of sensory impairment in patients post stroke within acute stroke units. Method: A mixed-methods approach was utilised, with an Australian national cross-sectional online survey of occupational therapists (n = 85) and state-based focus groups (n = 2). Descriptive analyses and thematic analysis were conducted. Findings: The majority of clinicians (78%) use non-standardised measures to assess for somatosensory impairment. Three qualitative themes were identified: acute setting contextual factors, individual patient characteristics and priorities, and clinician knowledge and perceived benefits. Conclusion: Occupational therapists working within acute stroke units are aware of the importance of assessing sensory impairment of the upper limb post stroke. However, the majority use non-standardised approaches and called for a standardised quick-to-administer tool kit that is readily available in acute stroke units.
SDSS-IV MaNGA: Modeling the Spectral Line Spread Function to Sub-Percent Accuracy
Creators: name: Law, David R.
name: Westfall, Kyle B.
name: Bershady, Matthew A.
name: Cappellari, Michele
name: Yan, Renbin
name: Belfiore, Francesco
name: Bizyaev, Dmitry
name: Brownstein, Joel R.
name: Chen, Yanping
name: Cherinka, Brian
name: Drory, Niv
name: Lazarz, Daniel
name: Shetty, Shravan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The SDSS-IV Mapping Nearby Galaxies at APO (MaNGA) program has been operating from 2014-2020, and has now observed a sample of 9,269 galaxies in the low redshift universe (z ~ 0.05) with integral-field spectroscopy. With rest-optical (λλ0.36 - 1.0 um) spectral resolution R ~ 2000 the instrumental spectral line-spread function (LSF) typically has 1sigma width of about 70 km/s, which poses a challenge for the study of the typically 20-30 km/s velocity dispersion of the ionized gas in present-day disk galaxies. In this contribution, we present a major revision of the MaNGA data pipeline architecture, focusing particularly on a variety of factors impacting the effective LSF (e.g., undersampling, spectral rectification, and data cube construction). Through comparison with external assessments of the MaNGA data provided by substantially higher-resolution R ~ 10,000 instruments we demonstrate that the revised MPL-10 pipeline measures the instrumental line spread function sufficiently accurately (<= 0.6% systematic, 2% random around the wavelength of Halpha) that it enables reliable measurements of astrophysical velocity dispersions sigma_Halpha ~ 20 km/s for spaxels with emission lines detected at SNR > 50. Velocity dispersions derived from [O II], Hbeta, [O III], [N II], and [S II] are consistent with those derived from Halpha to within about 2% at sigma_Halpha > 30 km/s. Although the impact of these changes to the estimated LSF will be minimal at velocity dispersions greater than about 100 km/s, scientific results from previous data releases that are based on dispersions far below the instrumental resolution should be reevaulated.
description: 26 pages, 23 figures. Accepted for publication in AJ
Baryon Number and Electric Charge Fluctuations in Pb+Pb Collisions at SPS energies
Creators: name: Konchakovski, V. P.
name: Gorenstein, M. I.
name: Bratkovskaya, E. L.
name: Stocker, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Event-by-event fluctuations of the net baryon number and electric charge in nucleus-nucleus collisions are studied in Pb+Pb at SPS energies within the HSD transport model. We reveal an important role of the fluctuations in the number of target nucleon participants. They strongly influence all measured fluctuations even in the samples of events with rather rigid centrality trigger. This fact can be used to check different scenarios of nucleus-nucleus collisions by measuring the multiplicity fluctuations as a function of collision centrality in fixed kinematical regions of the projectile and target hemispheres. The HSD results for the event-by-event fluctuations of electric charge in central Pb+Pb collisions at 20, 30, 40, 80 and 158 A GeV are in a good agreement with the NA49 experimental data and considerably larger than expected in a quark-gluon plasma. This demonstrate that the distortions of the initial fluctuations by the hadronization phase and, in particular, by the final resonance decays dominate the observable fluctuations.
description: 24 pages, 17 figures, to be published in Phys. Rev. C; new results on electric charge fluctuations in central Pb+Pb collisions at SPS energies have been added
Recent scaling properties of Bitcoin price returns
Creators: name: Takaishi, Tetsuya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business

description: While relevant stylized facts are observed for Bitcoin markets, we find a distinct property for the scaling behavior of the cumulative return distribution. For various assets, the tail index $μ$ of the cumulative return distribution exhibits $μ\approx 3$, which is referred to as "the inverse cubic law." On the other hand, that of the Bitcoin return is claimed to be $μ\approx 2$, which is known as "the inverse square law." We investigate the scaling properties using recent Bitcoin data and find that the tail index changes to $μ\approx 3$, which is consistent with the inverse cubic law. This suggests that some properties of the Bitcoin market could vary over time. We also investigate the autocorrelation of absolute returns and find that it is described by a power-law with two scaling exponents. By analyzing the absolute returns standardized by the realized volatility, we verify that the Bitcoin return time series is consistent with normal random variables with time-varying volatility.
description: 6 pages, 3 figures
Is HCN a True Tracer of Dense Molecular Gas in LIRGs and ULIRGs?
Creators: name: Gracia-Carpio, J.
name: Garcia-Burillo, S.
name: Planesas, P.
name: Colina, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of the first HCO+ survey probing the dense molecular gas content of a sample of 16 luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs). Previous work, based on HCN(1-0) observations, had shown that LIRGs and ULIRGs posses a significantly higher fraction of dense molecular gas compared to normal galaxies. While the picture issued from HCO+ partly confirms this result, we have discovered an intriguing correlation between the HCN(1-0)/HCO+(1-0) luminosity ratio and the IR luminosity of the galaxy (L(IR)). This trend casts doubts on the use of HCN as an unbiased quantitative tracer of the dense molecular gas content in LIRGs and ULIRGs. A plausible scenario explaining the observed trend implies that X-rays coming from an embedded AGN may play a dominant role in the chemistry of molecular gas at L(IR) > 1e12 Lsun. We discuss the implications of this result for the understanding of LIRGs, ULIRGs and high redshift gas-rich galaxies.
description: Accepted for publication in the ApJ Letters (14-02-06). 12 pages, 2 figures
Fitting orbits to tidal streams
Creators: name: Binney, James
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent years have seen the discovery of many tidal streams through the Galaxy. Relatively straightforward observations of a stream allow one to deduce three phase-space coordinates of an orbit. An algorithm is presented that reconstructs the missing phase-space coordinates from these data. The reconstruction starts from assumed values of the Galactic potential and a distance to one point on the orbit, but with noise-free data the condition that energy be conserved on the orbit enables one to reject incorrect assumptions. The performance of the algorithm is investigated when errors are added to the input data that are comparable to those in published data for the streams of Pal 5. It is found that the algorithm returns distances and proper motions that are accurate to of order one percent, and enables one to reject quite reasonable but incorrect trial potentials. In practical applications it will be important to minimize errors in the input data, and there is considerable scope for doing this.
description: 6 pages MNRAS in press
On the Peak-to-Mean Envelope Power Ratio of Phase-Shifted Binary Codes
Creators: name: Schmidt, Kai-Uwe
Publisher: name: arXiv
Year: 2006
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The peak-to-mean envelope power ratio (PMEPR) of a code employed in orthogonal frequency-division multiplexing (OFDM) systems can be reduced by permuting its coordinates and by rotating each coordinate by a fixed phase shift. Motivated by some previous designs of phase shifts using suboptimal methods, the following question is considered in this paper. For a given binary code, how much PMEPR reduction can be achieved when the phase shifts are taken from a 2^h-ary phase-shift keying (2^h-PSK) constellation? A lower bound on the achievable PMEPR is established, which is related to the covering radius of the binary code. Generally speaking, the achievable region of the PMEPR shrinks as the covering radius of the binary code decreases. The bound is then applied to some well understood codes, including nonredundant BPSK signaling, BCH codes and their duals, Reed-Muller codes, and convolutional codes. It is demonstrated that most (presumably not optimal) phase-shift designs from the literature attain or approach our bound.
description: minor revisions, accepted for IEEE Trans. Commun.
Actuarial management of closed defined benefit retirement schemes using stochastic simulations
Creators: name: Butt, Adam
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: HD7105.4.B88 2010
subject: Actuarial science
subject: Pension trusts.
subject: Risk management.

description: The provision of retirement payouts to employees through the use of defined benefits has been diminishing in popularity amongst employers for some time. One way in which this has been realised is through the closure of defined benefit schemes to new entrants, creating a subset of schemes that rapidly increase in maturity as the closed membership ages. The actuarial monitoring of these schemes is vitally important; due to their fixed time horizon the security of members' benefits is paramount. This thesis investigates the actuarial monitoring of closed defined benefit retirement schemes. This is done via a simulation approach of a model scheme, with economic and decrement factors varying stochastically. The desires of trustees and employer-sponsors are expressed numerically and the distribution of these desires analysed from the simulated output. In addition, a single objective function is developed, balancing the desires of all parties, in order to quantify the optimal use of investment and contribution strategies. In addition, adjustments to the model scheme are made to investigate their effect on the use of these strategies. It is found that schemes that are closed to new entrants should be invested more conservatively, but with surpluses and deficits allowed to be spread over a longer time frame than schemes that are open to new entrants. There is a strong trend towards a surplus of assets over liabilities, due to the lower boundary of a zero contribution rate when the scheme is in surplus but no corresponding upper boundary when the scheme is in deficit. This trend is exacerbated by the fact that there are no new liabilities entering the scheme through new entrants. Improvements in the minimum objective function can be obtained by spreading surplus only above a certain funding level, cash flow matching liabilities for pensions in payment, reducing investment risk as surplus grows and allowing for smoothing of asset levels in determining contribution rates.
Trapping and decay of negative charge in silicon nitride films for photovoltaic applications
Creators: name: Ren, Yongling
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: TK2960.R46 2011
subject: Solar cells
subject: Silicon nitride
subject: Thin films
subject: Surface preparation
subject: Photovoltaic power systems

description: Surface passivation is a major technology area requiring improvement in order to increase device efficiency for most commercial solar cells. As the thickness of solar cells continues to decrease, surface passivation becomes even more important as the efficiency loss due to poorly passivated surfaces becomes greater. This thesis aims to combine the excellent passivation properties of silicon nitride (SiNx) with the application advantages offered by corona charging to embed negative charges, particularly for the rear surface of conventional solar cells. Normal SiNx film contains positive charges, which is often beneficial as it results in field effect passivation of n type surfaces. However, for p type surfaces, the positive charge in SiNx induces a depletion region which increases recombination, and results in a parasitic shunt [1]. Therefore, the ability to trap negative charge in SiNx for long periods of time could be of interest for solar cell applications. This thesis focuses on a simple technique to modify positive charges to negative charges in SiNx films. The negative charge trapping behavior of silicon nitride thin films using various processing methods is studied. The effect of post-deposition annealing on the charge trapping ability and charge stability is investigated. Capacitance-Voltage measurements are used to estimate the injected negative charge density in silicon nitride films. It is observed that post-deposition annealing prior to charging can increase the charge trapping ability and improve the charge stability in silicon nitride films. Higher and more stable negative charge density can be achieved in nitrogen-rich silicon nitride films. Lifetime results also show that the negatively charged silicon nitride layers lead to an improvement in surface passivation. However, there is also some evidence that the process of negative charge injection can result in an increase in the interface defect density but still within acceptable levels. The thesis shows that negatively charged LPCVD silicon nitride and PECVD silicon nitride are both effective for the surface passivation of p type surfaces. The lifetime has been improved after negative charge injection. A charge decay model is proposed to explain the observed charge decay with time at elevated storage temperatures in the silicon-oxide-nitride (ON) and silicon-oxide-nitride-oxide (ONO) structures. It is, therefore, concluded that these structures, together with the charge-injection technologies developed in this thesis are viable and promising options for the surface passivation of silicon solar cells.
Magnons, Classical Strings and beta-Deformations
Creators: name: Chu, Chong-Sun
name: Georgiou, George
name: Khoze, Valentin V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by the recent work of Hofman and Maldacena we construct a classical string solution on the beta-deformed AdS_5 \times \tilde{S}^5 background. This string solution is identified with a magnon state of the integrable spin chain description of the N=1 supersymmetric beta-deformed gauge theory. The string solution carries two angular momenta, an infinite J_1 and a finite J_2 which classically can take arbitrary values. It corresponds to the magnon of charge J_2 propagating on an infinite spin chain. We derive an exact dispersion relation for this magnon from string theory.
description: v2: 15 pages. Improved and extended version, new section added with more details on the interpretation of our solution
Traveling ion channel density waves affected by a conservation law
Creators: name: Peter, Ronny
name: Zimmermann, Walter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: A model of mobile, charged ion channels embedded in a biomembrane is investigated. The ion channels fluctuate between an opened and a closed state according to a simple two-state reaction scheme whereas the total number of ion channels is a conserved quantity. Local transport mechanisms suggest that the ion channel densities are governed by electrodiffusion-like equations that have to be supplemented by a cable-type equation describing the dynamics of the transmembrane voltage. It is shown that the homogeneous distribution of ion channels may become unstable to either a stationary or an oscillatory instability. The nonlinear behavior immediately above threshold of an oscillatory bifurcation occuring at finite wave number is analyzed in terms of amplitude equations. Due to the conservation law imposed on ion channels large-scale modes couple to the finite wave number instability and have thus to be included in the asymptotic analysis near onset of pattern formation. A modified Ginzburg-Landau equation extended by long-wavelength stationary excitations is established and it is highlighted how the global conservation law affects the stability of traveling ion channel density waves.
description: Currently submitted to Physical Review E
A Pathologist-Annotated Dataset for Validating Artificial Intelligence: A Project Description and Pilot Study
Creators: name: Dudgeon, Sarah N
name: Wen, Si
name: Hanna, Matthew G
name: Gupta, Rajarsi
name: Amgad, Mohamed
name: Sheth, Manasi
name: Marble, Hetal
name: Huang, Richard
name: Herrmann, Markus D
name: Szu, Clifford H.
name: Tong, Darick
name: Werness, Bruce
name: Szu, Evan
name: Larsimont, Denis
name: Madabhushi, Anant
name: Hytopoulos, Evangelos
name: Chen, Weijie
name: Singh, Rajendra
name: Hart, Steven N.
name: Saltz, Joel
name: Salgado, Roberto
name: Gallas, Brandon D
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Image and Video Processing (eess.IV)
subject: FOS: Biological sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Purpose: In this work, we present a collaboration to create a validation dataset of pathologist annotations for algorithms that process whole slide images (WSIs). We focus on data collection and evaluation of algorithm performance in the context of estimating the density of stromal tumor infiltrating lymphocytes (sTILs) in breast cancer. Methods: We digitized 64 glass slides of hematoxylin- and eosin-stained ductal carcinoma core biopsies prepared at a single clinical site. We created training materials and workflows to crowdsource pathologist image annotations on two modes: an optical microscope and two digital platforms. The workflows collect the ROI type, a decision on whether the ROI is appropriate for estimating the density of sTILs, and if appropriate, the sTIL density value for that ROI. Results: The pilot study yielded an abundant number of cases with nominal sTIL infiltration. Furthermore, we found that the sTIL densities are correlated within a case, and there is notable pathologist variability. Consequently, we outline plans to improve our ROI and case sampling methods. We also outline statistical methods to account for ROI correlations within a case and pathologist variability when validating an algorithm. Conclusion: We have built workflows for efficient data collection and tested them in a pilot study. As we prepare for pivotal studies, we will consider what it will take for the dataset to be fit for a regulatory purpose: study size, patient population, and pathologist training and qualifications. To this end, we will elicit feedback from the FDA via the Medical Device Development Tool program and from the broader digital pathology and AI community. Ultimately, we intend to share the dataset, statistical methods, and lessons learned.
description: 26 pages, 4 figures, 2 tables Submitted to the Journal of Pathology Informatics Project web page: https://ncihub.org/groups/eedapstudies
Characterization of UBC-1, a UBC2/RAD6-like ubiquitin conjugating enzyme from the nematode Caenorhabditis elegans
Creators: name: Leggett, David Scott
Publisher: name: University of British Columbia
Year: 2009

description: The Caenorhabditis elegans gene ubc-1, encoding a homologue of the Saccharomyces cerevisiae ubiquitin conjugating enzyme UBC2/RAD6, was cloned. The biochemical properties of UBC-1 were examined as well as its expression throughout the development of the organism. The ubc-1 gene encodes a 192 amino acid ubiquitin conjugating enzyme that shows considerable sequence identity with the Saccharomyces cerevisiae UBC2/RAD6 (66%), as well as with homologues from Schizosaccharomyces pombe (70%), Drosophila melanogaster (83%) and human (84%). However, UBC-1 is distinct in being the only RAD6 homologue, other than RAD6 itself, with a carboxy-terminal extension. Analysis of ubc-1 homologues from Caenorhabditis briggsae and Ascaris suum showed that the carboxy-terminal extension is conserved, suggesting that it plays an important role in nematodes. When constitutively expressed from the yeast promoter ADH1, ubc-1 complements the DNA repair and growth deficiencies in a S. cerevisiae rad6A mutant, demonstrating that ubc-1 is a functional homologue of RAD6. Northern blot analysis demonstrated that ubc-1 is transcribed as a 1.7 kb mRNA which is constitutively expressed at similar levels, in all life stages. The ubc-1 mRNA transcript is trans-spliced by SL2, suggesting it may be transcribed as part of a polycistronic message. However, no detectable signal on Northern blots was seen using probes spanning 2 kb upstream of ubc-1. Also, when the upstream 2 kb and first intron of ubc-1 were fused in frame with LacZ and injected into C. elegans, the resultant stable lines showed strong expression in the gut, suggesting the presence of a promoter within this region. Therefore, although ubc-1 mRNA is spliced by SL2, no evidence was found that it is transcribed as part of a polycistronic messager RNA. Biochemical analysis of bacterially expressed recombinant UBC-1 showed that it is capable of forming a thiol ester bond with ubiquitin, demonstrating that it is indeed a ubiquitin conjugating enzyme. Surprisingly, in addition to forming a thiol ester with ubiquitin, UBC-1 also stably monoubiquitinated itself on lysine 162 in its C-terminal tail. Inactive UBC-1 lacking the active site cysteine was not monoubiquitinated at lysine 162, even in the presence of equimolar functional UBC-1, demonstrating that UBC-1 likely ubiquitinates itself via an intramolecular reaction. Cross-linking experiments using purified recombinant UBC-1 revealed that it self-associates in vitro, forming dimers and probably tetramers. The tail of UBC-1 plays an important role in this interaction, as deletions of this region significantly decreased, but did not abolish the ability of UBC-1 to self-associate. These findings demonstrate that the tail of UBC-1 is important both for its quaternary structure and its post-translational modification.
The Synthesis of Education Provision and Teacher Development Based on Her Royal Highness Princess Maha Chakri Sirindhorn s Initiation: A Case Study of Border Patrol Police School Singapore Airlines in Honor of His Majesty
Creators: name: Khompol Suvarnakuta
name: Supanee Chaiumporn
Publisher: name: National Institute of Development Administration
Year: 2009

description: 3, 49, NIDA Development Journal
Quaternary Constant-Amplitude Codes for Multicode CDMA
Creators: name: Schmidt, Kai-Uwe
Publisher: name: arXiv
Year: 2006
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: A constant-amplitude code is a code that reduces the peak-to-average power ratio (PAPR) in multicode code-division multiple access (MC-CDMA) systems to the favorable value 1. In this paper quaternary constant-amplitude codes (codes over Z_4) of length 2^m with error-correction capabilities are studied. These codes exist for every positive integer m, while binary constant-amplitude codes cannot exist if m is odd. Every word of such a code corresponds to a function from the binary m-tuples to Z_4 having the bent property, i.e., its Fourier transform has magnitudes 2^{m/2}. Several constructions of such functions are presented, which are exploited in connection with algebraic codes over Z_4 (in particular quaternary Reed-Muller, Kerdock, and Delsarte-Goethals codes) to construct families of quaternary constant-amplitude codes. Mappings from binary to quaternary constant-amplitude codes are presented as well.
description: This is the revised journal version
The generalized Davey-Stewartson equations, its Kac-Moody-Virasoro symmetry algebra and relation to DS equations
Creators: name: Gungor, F.
name: Aykanat, O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We compute the Lie symmetry algebra of the generalized Davey-Stewartson (GDS) equations and show that under certain conditions imposed on parameters in the system it is infinite-dimensional and isomorphic to that of the standard integrable Davey-Stewartson equations which is known to have a very specific Kac-Moody-Virasoro loop algebra structure. We discuss how the Virasoro part of this symmetry algebra can be used to construct new solutions, which are of vital importance in demonstrating existence of blow-up profiles, from known ones using Lie subgroup of transformations generated by three-dimensional subalgebras, namely $\Sl(2,\mathbb{R})$. We further discuss integrability aspects of GDS equations.
description: 9 pages
Dianthus Linnaeus
Creators: name: Vaezi, Jamil
name: Behroozian, Maryam
name: Memariani, Farshid
name: Joharchi, Mohammad Reza
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Caryophyllaceae
Dianthus

description: Key to three similar Dianthus species occurring in NE of Iran
1. Stems slander; petal limb fimbriate to one-third, rarely dentate, pink; calyx 20–25 mm long, shape of dent tip mucronate. ................................................................................................................................................ D. orientalis subsp. stenocalyx
- Stems strong; petal limb fimbriate from the middle to base, white to pale pink; calyx 20–32 mm long, shape of dent tip acute or acuminate................................................................................................................................................................ 2
2. Petal limb fimbriate for 1/2 its length; bracteoles 4(–6), broad-membranous at margin; calyx 20–22 mm long ................... ..................................................................................................................................................................... D. pseudocrinitus
- Petal limb fimbriate for more than 1/2 its length; bracteoles (4–)6–8(–10), narrowed-membranous at margin; calyx 25–32 mm long ................................................................................................................................. D. crinitus subsp. turcomanicus
description: Published as part of Vaezi, Jamil, Behroozian, Maryam, Memariani, Farshid & Joharchi, Mohammad Reza, 2014, Dianthus pseudocrinitus (Caryophyllaceae), a new species from Northeast of Iran identified by morphological and molecular data, pp. 59-73 in Phytotaxa 156 (2) on page 71, DOI: 10.11646/phytotaxa.156.2.1, http://zenodo.org/record/5127713