cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
X-ray Polarization from Accreting Black Holes: Coronal Emission
Creators: name: Schnittman, Jeremy D.
name: Krolik, Julian H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present new calculations of X-ray polarization from accreting black holes (BHs), using a Monte-Carlo ray-tracing code in full general relativity. In our model, an optically thick disk in the BH equatorial plane produces thermal seed photons with polarization oriented parallel to the disk surface. These seed photons are then inverse-Compton scattered through a hot (but thermal) corona, producing a hard X-ray power-law spectrum. We consider three different models for the corona geometry: a wedge ``sandwich'' with aspect ratio H/R and vertically-integrated optical depth tau_0 constant throughout the disk; an inhomogeneous ``clumpy'' corona with a finite number of hot clouds distributed randomly above the disk within a wedge geometry; and a spherical corona of uniform density, centered on the BH and surrounded by a truncated thermal disk with inner radius R_edge. In all cases we find a characteristic transition from horizontal polarization at low energies to vertical polarization above the thermal peak; the vertical direction is defined as the projection of the BH spin axis on the plane of the sky. We show how the details of the spectropolarization signal can be used to distinguish between these models and infer various properties of the corona and BH. Although the bulk of this paper focuses on stellar-mass BHs, we also consider the effects of coronal scattering on the X-ray polarization signal from supermassive BHs in active galactic nuclei.
description: 45 pages, 19 figures, submitted to ApJ
Hydrosaurus salvator Gü. R. b. J.
Creators: name: Müller, F
Publisher: name: Zenodo
Year: 1885
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Squamata
Sauria
Agamidae
Hydrosaurus
Hydrosaurus salvator

description: Hydrosaurus salvator Gü. R. b. J.
Peradenia, jung, v. d. Hh. Dr. Sarasin. [1]
description: Published as part of Müller, F, 1885, Vierter Nachtrag zum Katalogder herpetologischen Sammlung des Basler Museums, pp. 668-717 in Verhandlungen der Naturforschenden Gesellschaft in Basel. 7 (3) on page 701, DOI: 10.5962/bhl.part.2388, http://zenodo.org/record/15183591
Simulating the effect of AGN feedback on the metal enrichment of galaxy clusters
Creators: name: Fabjan, D.
name: Borgani, S.
name: Tornatore, L.
name: Saro, A.
name: Murante, G.
name: Dolag, K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a study of the effect of AGN feedback on metal enrichment and thermal properties of the intracluster medium (ICM) in hydrodynamical simulations. The cosmological simulations are performed for a set of clusters using a version of the TreePM-SPH Gadget code that follows chemo-dynamical evolution by accounting for metal enrichment by different stellar populations. Besides runs not including any efficient form of energy feedback, we carry out simulations including: (i) kinetic feedback in the form of galactic winds triggered by supernova explosions; (ii) AGN feedback from gas accretion onto super-massive black holes (BHs); (iii) AGN feedback in which a 'radio mode' is included. We find that AGN feedback is able to quench star formation in the brightest cluster galaxies at z<4 and provides correct temperature profiles in the central regions of galaxy groups. However, its effect is not sufficient to create cool cores in massive clusters. AGN feedback creates a widespread enrichment in the outskirts of clusters, thanks to its efficiency in displacing enriched gas from galactic halos to the inter-galactic medium at relatively high redshift. Iron abundance profiles are in better agreement with observations, with a more pristine enrichment of the ICM around and beyond the cluster virial regions. From the pattern of the relative abundances of Silicon and Iron, we conclude that a significant fraction of ICM enrichment in simulations is contributed by a diffuse population of intra-cluster stars. Our simulations also predict that profiles of Z_Si/Z_Fe abundance ratio do not increase at least out to 0.5 R_vir. Our results clearly show that different sources of energy feedback leave distinct imprints in the enrichment pattern of the ICM, that are more evident when looking at cluster external regions.
description: 22 pages, 24 figures, 2 tables, to appear in MNRAS
Entanglement entropy of two disjoint blocks in XY chains
Creators: name: Fagotti, Maurizio
name: Calabrese, Pasquale
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the Renyi entanglement entropies of two disjoint intervals in XY chains. We exploit the exact solution of the model in terms of free Majorana fermions and we show how to construct the reduced density matrix in the spin variables by taking properly into account the Jordan-Wigner string between the two blocks. From this we can evaluate any Renyi entropy of finite integer order. We study in details critical XX and Ising chains and we show that the asymptotic results for large blocks agree with recent conformal field theory predictions if corrections to the scaling are included in the analysis correctly. We also report results in the gapped phase and after a quantum quench.
description: 34 pages, 11 figures
Lacerta stirpium Daud.
Creators: name: Müller, F
Publisher: name: Zenodo
Year: 1885
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Amphibia
Sauria
Calyptocephalellidae
Lacerta
Lacerta stirpium

description: Lacerta stirpium Daud.
♂♀ Dornachschloss v. H. Knecht. [2]
description: Published as part of Müller, F, 1885, Vierter Nachtrag zum Katalogder herpetologischen Sammlung des Basler Museums, pp. 668-717 in Verhandlungen der Naturforschenden Gesellschaft in Basel. 7 (3) on page 702, DOI: 10.5962/bhl.part.2388, http://zenodo.org/record/15183591
Microbial nitrogen metabolisms and nitrogen recycling through DNRA in low-oxygen marine waters
Creators: name: Huggins, Julia Anne
Publisher: name: University of British Columbia
Year: 2023

description: Microorganisms regulate global nitrogen (N) availability by conducting complex series of metabolisms that transform N compounds and can produce bio-unavailable forms of N (N-loss). N-loss primarily occurs in the absence or near-absence of oxygen (O₂), and thus O₂ emerges as an important regulator of N availability. Low-O₂ pelagic marine environments are among the largest venues for N-loss and they are currently expanding as a result of ocean deoxygenation, driven by climate change. These changes have potential to alter N availability in the ocean and create feedbacks on climate, but the outcomes are difficult to predict, partly because microbial N metabolisms are complex. Three different N metabolisms can occur under low-O₂ conditions: two metabolisms (denitrification, anammox) result in N loss, but another (DNRA) recycles N in the environment. We know relatively less about DNRA and the ways O₂ can influence N loss and recycling. In this thesis I conduct experiments in a model low-O₂ marine environment to create new knowledge about N-recycling and the ways microbial N metabolisms respond to changing O₂. In chapter 2, I test for metabolisms that can consume N₂O across a range of O₂ conditions to determine whether N₂O is lost through denitrification or recycled. I find that N₂O cannot be recycled, but N₂O-loss can still be active in the presence of low O₂. In chapter 3, I test the importance of DNRA in marine waters and generate new information about microorganisms that conduct DNRA. I find that DNRA is highly variable and can be the dominant metabolism, overall. I also find that DNRA is conducted by facultatively aerobic organisms and is most active in intermittently-oxygenated environments. In the fourth chapter I test whether low O₂ can directly regulate N loss and recycling. I find that O₂ can regulate all three metabolisms and potentially stimulate denitrification and DNRA. The observations that DNRA can be the dominant metabolism in pelagic marine environments and that O₂ can stimulate N metabolisms are two novel findings that, if widely applicable, could alter models and forecasts for deoxygenation. I suggest future work to test extensibility and build on these results.
Connecting anomaly and tunneling methods for Hawking effect through chirality
Creators: name: Banerjee, Rabin
name: Majhi, Bibhas Ranjan
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The role of chirality is discussed in unifying the anomaly and the tunneling formalisms for deriving the Hawking effect. Using the chirality condition and starting from the familiar form of the trace anomaly, the chiral (gravitational) anomaly, manifested as a nonconservation of the stress tensor, near the horizon of a black hole, is derived. Solution of this equation yields the stress tensor whose asymptotic infinity limit gives the Hawking flux. Finally, use of the same chirality condition in the tunneling formalism gives the Hawking temperature that is compatible with the flux obtained by anomaly method.
description: LaTex, 8 pages, no figures, reformulation of tunneling mechanism, to appear in Phys. Rev. D
Ideas for Middle School Mathematics
Creators: name: Giambruno, Amanda
name: Li, Heidi
Publisher: name: Journal of Mathematics Education at Teachers College
Year: 2010

description: To meet the requirements for New York State certification in the teaching of secondary school mathematics, student teachers complete placements in both a middle school and a high school. In addition to working in the classroom, they maintain journals and post them online. The journals provide an opportunity for student teachers to reflect on their practice and to learn from others. In addition, student teachers attend weekly seminars at the College. By doing so, they become members of a community of practitioners. NOTES FROM THE CLASSROOM contains excerpts from the journals.
description: Journal of Mathematics Education at Teachers College, Vol. 1 No. 1: Spring - Summer 2010
Moderate Steepening of Galaxy Cluster Dark Matter Profiles by Baryonic Pinching
Creators: name: Sommer-Larsen, Jesper
name: Limousin, Marceau
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: To assess the effect of baryonic ``pinching'' of galaxy cluster dark matter (DM) haloes, cosmological (LCDM) TreeSPH simulations of the formation and evolution of two galaxy clusters have been performed, with and without baryons included. The simulations with baryons invoke star formation, chemical evolution with non-instantaneous recycling, metallicity dependent radiative cooling, strong star-burst, driven galactic super-winds and the effects of a meta-galactic UV field, including simplified radiative transfer. The two clusters have T_X~3 and 6 keV, respectively, and, at z~0, both host a prominent, central cD galaxy. Comparing the simulations without and with baryons, it is found for the latter that the inner DM density profiles, r<50-100 kpc, steepen considerably: Delta(alpha)~0.5-0.6, where -alpha is the logarithmic DM density gradient. This is mainly due to the central stellar cDs becoming very massive, as a consequence of the onset of late time cooling flows and related star formation. Once these spurious cooling flows have been corrected for, and the cluster gravitational potentials dynamically adjusted, much smaller pinching effects are found: Delta(alpha)~0.1. Including the effects of baryonic pinching, central slopes of alpha~1.0 and 1.2 are found for the DM in the two clusters, interestingly close to recent observational findings. For the simulations with baryons, the inner density profile of DM+ICM gas combined is found to be only very marginally steeper than that of the DM, Delta(alpha)<0.05. However, the total matter inner density profiles are found to be Delta(alpha)~0.5 steeper than the inner profiles in the dark matter only simulations.
description: 11 Pages, 8 Figures, submitted to MNRAS, printing in colour recommended
Examining What Teachers Do When They Display Their Best Practice: Teaching Mathematics for Understanding
Creators: name: Silver, Edward
Publisher: name: Journal of Mathematics Education at Teachers College
Year: 2010

description: Despite several decades of research in psychology and mathematics education pointing to the importance of learning mathematics with understanding, other research on teachers’ instructional practice in mathematics classrooms has found a remarkably consistent characterization of mathematics teaching in the United States as generally doing little to help students develop a deep understanding of mathematical ideas. Because the practice of teaching mathematics for understanding is so rarely encountered, it has not been extensively studied empirically. This paper summarizes the findings of an analysis of selected mathematical and pedagogical features of the lesson materials found in the portfolio entries submitted by candidates seeking certification by the National Board for Professional Teaching Standards in the area of Early Adolescence/Mathematics. These lessons were selected by teachers and were intended to display “best practice” examples of their teaching mathematics for understanding. Some implications for further research and for teacher education are also discussed.
description: Journal of Mathematics Education at Teachers College, Vol. 1 No. 1: Spring - Summer 2010
Vortex glass scaling in Pb-doped Bi2223 single crystal
Creators: name: Eltsev, Yu.
name: Lee, S.
name: Nakao, K.
name: Tajima, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on study of the vortex liquid in Pb-doped Bi-2223 single crystal using the in-plane resistivity measurements as a function of temperature and magnetic field up to 6T applied perpendicular to CuO planes. Below Tc at the upper part of superconducting transition we found Arrhenius-like resistivity behavior. With further temperature decrease close to resistivity onset resistivity shows power law dependence on temperature signaling approaching vortex-glass transition. The critical exponents nu(z-1)=4.6 plus-minus 0.5 are found to be field independent within experimental errors. We also present magnetic phase diagram defining region of nonzero critical current for Pb-doped Bi-2223 single crystal.
description: 9 pages, 5 figures
Thermodynamics of Blue Phases In Electric Fields
Creators: name: Henrich, O.
name: Marenduzzo, D.
name: Stratford, K.
name: Cates, M. E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present extensive numerical studies to determine the phase diagrams of cubic and hexagonal blue phases in an electric field. We confirm the earlier prediction that hexagonal phases, both 2 and 3 dimensional, are stabilized by a field, but we significantly refine the phase boundaries, which were previously estimated by means of a semi-analytical approximation. In particular, our simulations show that the blue phase I -- blue phase II transition at fixed chirality is largely unaffected by electric field, as observed experimentally.
description: submitted to Physical Review E, 7 pages (excluding figures), 12 figures
OCHRE Local Decision Making Stage 2 Evaluation: Murdi Paaki Regional Assembly Evaluation Report
Creators: name: O'Bryan, Marnie (Margaret)
name: Markham, Francis
Publisher: name: Centre for Aboriginal Economic Policy Research, The Australian National University
Year: 2023

description: Local Decision Making (LDM) is a NSW Government initiative that aims to transform the way that NSW Government agencies engage with Aboriginal communities regarding service delivery. The aims and approach of LDM are characteristic of the contemporary emphasis on partnerships, agreements, and accountability structures in Aboriginal and Torres Strait Islander public policy in Australia. This evaluation has undertaken a detailed examination of the operation of LDM in the Murdi Paaki region. It underscores the crucial role that LDM plays as a pillar of Aboriginal public policy infrastructure in NSW. It describes how LDM can bolster other initiatives or programs, presenting several examples of LDM's benefits and the changes it has induced on the ground. This report attests to the potential and capacity of the LDM initiative to provide a framework for shared decision-making and to alter government relationships in the Murdi Paaki region. For all its potential, LDM in the Murdi Paaki region is not operating at an optimal level. The system is under-resourced. Community Working Parties are stretched, with unpaid volunteers bearing a heavy burden as they seek to represent their constituents in the decision-making process. This evaluation reveals an urgent need to transform government operations so that resources and decision-making power associated with service delivery are genuinely devolved to local and regional representative bodies. In the Murdi Paaki region, LDM presents a viable platform to pursue that goal. Real progress will demand both structural (institutional) and attitudinal (individual) changes to support decentralised decision-making through LDM. Systems change is achievable, but will require effective leadership, structural reforms, and attitude changes among public sector officials.
Predictors of Military Dropout
Creators: name: Heitz, Etienne J.
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Civic and Community Engagement
subject: Social and Behavioral Sciences
subject: Industrial and Organizational Psychology
subject: Sociology
subject: FOS: Sociology
subject: Psychology
subject: FOS: Psychology
subject: Military and Veterans Studies
subject: Public Affairs, Public Policy and Public Administration
subject: Defense and Security Studies
subject: Organization Development
subject: Personality and Social Contexts
subject: army
subject: attrition
subject: conscription
subject: self-esteem
subject: discharge
subject: Switzerland
subject: recruits
subject: Big Five
subject: armed forces
subject: military
subject: dropout
subject: turover

description: This preregistered, prospective study aims to answer the question of whether Big Five personality domains and facets as well as self-esteem can predict dropout from recruit school in the Swiss Armed Forces.
Automated Grading and Feedback Tools: A Systematic Review
Creators: name: Messer, Marcus
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Other Computer Sciences
subject: Physical Sciences and Mathematics
subject: Education
subject: Computer Sciences
subject: Educational Assessment, Evaluation, and Research
subject: Automated Feedback
subject: Automated Grading
subject: Computer Science Education

description: This is a pre-registration form for an upcoming systematic review, including search terms and, inclusion and exclusion criteria. The form is based on the "Inclusive Systematic Review Registration Form" (https://osf.io/by27q/)
Lacerta viridis Daud.
Creators: name: Müller, F
Publisher: name: Zenodo
Year: 1885
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Squamata
Sauria
Lacertidae
Lacerta
Lacerta viridis

description: Lacerta viridis Daud.
Grenzacherhorn v. H. A. Leonhard. [1] Bergell, 2 Prachtexemplare v. H. Jos. Mani.
In Ergänzung der Angaben Hoffmanns (in Bronns Klassen u. Ordng. etc. Rept. pag. 1082 u. f.) füge ich hier bei, dass L. viridis nördlich vom Gotthard auch noch auf Schweizerboden zu treffen ist, nämlich an der nördlichen Rheinhalde oberhalb Basel. Nahe an der Grenze bewohnt sie ausserdem auch das Grenzacherhorn und die Abhänge bis Wyhlen, weiter unterhalb im Rheintal den Isteinerklotz, ist aber an letzterm Ort, wo sie früher häuﬁg war (gleichzeitig mit der Ausrottung einiger südlichen Pflanzen), selten geworden. Nördlicher im Rheintal habe ich sie einmal bei Badenweiler getroffen.
Die Verbreitung der Mauereidechse in der Schweiz ist noch nicht festgestellt. Sicher ist nur, dass sie, abgesehen von den Landschaften südlich der Alpen, auch im ganzen Jura von Genf bis Brugg wohnt, und zwar nicht blos an dessen südlichen Abhängen. Ferner ist dieselbe überall an del oben für Lac. viridis angegebenen Stellen in der Umgebung von Basel zu finden.
Für Lac. agilis (Stirpium Daud) ist mir bis jetzt als südlichster Punkt in der Schweiz Gryon in der Waadt bekannt, wo sie über der Zone der Mauereidechse Buschränder der untern Alpenweiden bewohnt.
description: Published as part of Müller, F, 1885, Vierter Nachtrag zum Katalogder herpetologischen Sammlung des Basler Museums, pp. 668-717 in Verhandlungen der Naturforschenden Gesellschaft in Basel. 7 (3) on page 702, DOI: 10.5962/bhl.part.2388, http://zenodo.org/record/15183591
Statistics of trajectories in two-state master equations
Creators: name: Jackson, Andrew D.
name: Pigolotti, Simone
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We derive a simple expression for the probability of trajectories of a master equation. The expression is particularly useful when the number of states is small and permits the calculation of observables that can be defined as functionals of whole trajectories. We illustrate the method with a two-state master equation, for which we calculate the distribution of the time spent in one state and the distribution of the number of transitions, each in a given time interval. These two expressions are obtained analytically in terms of modified Bessel functions.
description: 4 pages, 3 figures
COVID-19 conspiracy belief and conceptions of democracy
Creators: name: Küppers, Anne
name: Reiser, Marion
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health
subject: Computational Biology

description: Although conspiracy theories moved to the centre of the public debate during the Covid-19 pandemic and have severe consequences on politics and society, the link between Covid-19 conspiracy beliefs and democracy has hardly been scrutinized. By combining the literature on understandings and conceptions of democracy and the literature on upward conspiracy theories, we ask whether citizens who share Covid-19 conspiracy beliefs have a specific conception of democracy. Using data from a representative survey conducted in the East German Land of Thuringia in summer 2021 and by employing a fine-grained measure of attributes of democracy, we show that Covid-19 conspiracy belief is neither significantly associated with support for the idea of democracy nor with support for non-democratic forms of government. Instead, Covid-19 conspiracy believers have a particular understanding of democracy in which power is to be taken away from the political elites of representative democracy and more control is given to citizens.
Assessing Qualitative Justifications Under Taft's Rule of Reason
Creators: name: Rooney, William H.
name: Fleming, Timothy G.
Publisher: name: Columbia Business Law Review
Year: 2019

description: In his landmark opinion in United States v. Addyston Pipe & Steel Co.,1 then-Judge William Howard Taft focused on the question of whether the restraint of trade there at issue was the primary motivation for the agreement or “merely ancillary to the main purpose of a lawful contract.”2 The doctrine of naked and ancillary restraints that Taft developed in Addyston Pipe marked the origins of the per se rule and rule of reason, which together form the fundamental framework that governs the Sherman Act today. In Taft’s presentation, restraints of trade must be understood in the context of their relationship to the purpose of the primary agreement. Where that purpose is legitimate and the relationship of the restraint is ancillary, courts should be hesitant to invalidate the restraint.
description: Columbia Business Law Review, Vol. 2019 No. 3
Lacerta vivipara Laur.
Creators: name: Müller, F
Publisher: name: Zenodo
Year: 1885
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Squamata
Sauria
Lacertidae
Lacerta
Lacerta vivipara

description: Lacerta vivipara Laur.
Frohnalp v. H. H. Gysin. [1]
description: Published as part of Müller, F, 1885, Vierter Nachtrag zum Katalogder herpetologischen Sammlung des Basler Museums, pp. 668-717 in Verhandlungen der Naturforschenden Gesellschaft in Basel. 7 (3) on page 702, DOI: 10.5962/bhl.part.2388, http://zenodo.org/record/15183591
Extreme weather and climate salience : the effects of the 2021 western heat dome on the salience of climate change
Creators: name: Valcke-Beckett, Karina
Publisher: name: University of British Columbia
Year: 2023

description: The risk of extreme weather events is expected to increase as global surface temperature rises in part due to lack of government actions to slow climate change. Extreme weather events are expected to close the temporal distance between the public and climate change and act as a focusing event which increases the salience of climate change for citizens. However, the current empirical evidence on the effects of extreme weather events on the salience of climate change is inconclusive, and no such research exists within a Canadian context. Using an OLS regression model, this study adds to the pre-existing literature by studying the effects of personally experiencing the 2021 Western Heat Dome on the salience of climate change in the Canadian public. The 2021 Western Heat Dome was an extreme and deadly heat event which caused the death of 619 individuals between June 25 and July 1, 2021, in British Columbia. Individuals who experienced the 2021 Western Heat Dome are expected to have a higher increase in the salience of climate change compared to individuals who did not personally experience this event. However, this study finds no evidence that the 2021 Western Heat Dome had an impact on the salience of climate change for individuals, including within partisan subgroups. The role of news media as a mediating factor between extreme weather events and climate salience is also examined, however this study finds no evidence that the media played a role in increasing the salience of climate change by conveying messages about the 2021 Western Heat Dome.
Note on New Massive Gravity in $AdS_3$
Creators: name: Liu, Yan
name: Sun, Ya-Wen
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this note we study the properties of linearized gravitational excitations in the new massive gravity theory in asymptotically $AdS_3$ spacetime and find that there is also a critical point for the mass parameter at which massive gravitons become massless as in topological massive gravity in $AdS_3$. However, at this critical point in the new massive gravity the energy of all branches of highest weight gravitons vanish and the central charges also vanish within the Brown-Henneaux boundary conditions. The new massive gravity in asymptotically $AdS_3$ spacetime seems to be trivial at this critical point under the Brown-Henneaux boundary conditions if the Brown-Henneaux boundary conditions can be consistent with this theory. At this point, the boundary conditions of log gravity may be preferred.
description: v3 typos corrected, refs added, version to appear in JHEP
Influence of a stellar cusp on the dynamics of young stellar discs and the origin of the S-stars in the Galactic Centre
Creators: name: Löckmann, Ulf
name: Baumgardt, Holger
name: Kroupa, Pavel
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Observations of the Galactic Centre show evidence of one or two disc-like structures of very young stars orbiting the central super-massive black hole within a distance of a few 0.1 pc. A number of analyses have been carried out to investigate the dynamical behaviour and consequences of these discs, including disc thickness and eccentricity growth as well as mutual interaction and warping. However, most of these studies have neglected the influence of the stellar cusp surrounding the black hole, which is believed to be 1-2 orders of magnitude more massive than the disc(s). By means of N-body integrations using our bhint code, we study the impact of stellar cusps of different compositions. We find that although the presence of a cusp does have an important effect on the evolution of an otherwise isolated flat disc, its influence on the evolution of disc thickness and warping is rather mild in a two-disc configuration. However, we show that the creation of highly eccentric orbits strongly depends on the graininess of the cusp (i.e. the mean and maximum stellar masses): While Chang (2009) recently found that full cycles of Kozai resonance are prevented by the presence of an analytic cusp, we show that relaxation processes play an important role in such highly dense regions and support short-term resonances. We thus find that young disc stars on initially circular orbits can achieve high eccentricities by resonant effects also in the presence of a cusp of stellar remnants, yielding a mechanism to create S-stars and hyper-velocity stars. Furthermore, we discuss the underlying initial mass function (IMF) of the young stellar discs and find no definite evidence for a non-canonical IMF.
description: 10 pages, 7 figures, 1 table, accepted for publication in MNRAS
Ophiops (Cabrita) Jerdonii Blyth.
Creators: name: Müller, F
Publisher: name: Zenodo
Year: 1885
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Squamata
Sauria
Lacertidae
Ophiops
Ophiops jerdonii

description: * Ophiops (Cabrita) Jerdonii Blyth.
Ostindien v. F M. [3]
description: Published as part of Müller, F, 1885, Vierter Nachtrag zum Katalogder herpetologischen Sammlung des Basler Museums, pp. 668-717 in Verhandlungen der Naturforschenden Gesellschaft in Basel. 7 (3) on page 702, DOI: 10.5962/bhl.part.2388, http://zenodo.org/record/15183591
Let's Talk About Reparations
Creators: name: Taifa, Nkechi
Publisher: name: Columbia Journal of Race and Law
Year: 2020

description: In the spring of the 2019, the Columbia Journal of Race and Law invited activist, attorney and scholar, Nkechi Taifa, to Columbia Law School for a public lecture on the topic of Reparations for descendent of enslaved Africans in the United States. Reparations has been a subject to much public discourse over the years and, in the last decade in particular, there has been a renewed interest on the political viability of establishing a federal commission to study the harm caused by slavery and develop recommendations to repairing those lingering harms on living African Americans today. On June 19, 2019, the House of Representatives held a historic public hearing, where prominent African American scholars, activists, writers, lawyers, amongst others, shared their thoughts on the topic of reparations. This renewed interest is a culmination of over a century long struggle by the reparations’ movement in the United States. Ms. Taifa offers that historical view of the reparation’s movement in the United States. In her captivating address to the Columbia Law School community, Ms. Taifa articulates the passions, courage, vision, successes, frustrations and resilience of the Reparations movement in the United States from the late 1800s to the present. At the conclusion of Ms. Taifa’s remark, it was obvious to us at CJRL that Ms. Taifa’s timely messages was much a much-needed intervention in the Reparations discourse. It is with that aim that the CJRL editorial board, in consultation with Ms. Taifa, decided to publish her remarks. Aside from the citations and annotation, the text below is largely as she delivered it a Columbia Law school audience on March 26, 2019. We are grateful to Ms. Taifa for allowing us to publish her speech and for working with us through the editorial process. We are overjoyed to be able to share her work with the world.
description: Columbia Journal of Race and Law, Vol. 10 No. 1 (2020): Special Feature
Theoretical Study of the Spurious-Free Dynamic Range of a Tunable Delay Line based on Slow Light in SOA
Creators: name: Berger, Perrine
name: Bourderionnet, Jerome
name: Alouini, Mehdi
name: Bretenaker, Fabien
name: Dolfi, Daniel
Publisher: name: arXiv
Year: 2009
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We developed a predictive model describing harmonic generation and intermodulation distortions in semiconductor optical amplifiers (SOAs). This model takes into account the variations of the saturation parameters along the propagation axis inside the SOA, and uses a rigorous expression of the gain oscillations harmonics. We derived the spurious-free dynamic range (SFDR) of a slow light delay line based on coherent population oscillation (CPO) effects, in a frequency range covering radar applications (from 40kHz up to 30GHz), and for a large range of injected currents. The influence of the high order distortions in the input microwave spectrum is discussed, and in particular, an interpretation of the SFDR improvement of a Mach-Zehnder modulator by CPOs effects in a SOA is given.
description: 12 pages, 5 figures (8 attached figures)
Optical and X-ray Properties of the Swift BAT-detected AGN
Creators: name: Winter, L.
name: Mushotzky, R.
name: Lewis, K.
name: Veilleux, S.
name: Koss, M.
name: Keeney, B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Swift Gamma-Ray Burst satellite has detected a largely unbiased towards absorption sample of local ($ \approx 0.03$) AGN, based solely on their 14--195 keV flux. In the first 9 months of the survey, 153 AGN sources were detected. The X-ray properties in the 0.3--10 keV band have been compiled and presented based on analyses with XMM-Newton, Chandra, Suzaku, and the Swift XRT (Winter et al. 2009). Additionally, we have compiled a sub-sample of sources with medium resolution optical ground-based spectra from the SDSS or our own observations at KPNO. In this sample of 60 sources, we have classified the sources using standard emission line diagnostic plots, obtained masses for the broad line sources through measurement of the broad H$β$ emission line, and measured the [OIII] 5007Åluminosity of this sample. Based on continuum fits to the intrinsic absorption features, we have obtained clues about the stellar populations of the host galaxies. We now present the highlights of our X-ray and optical studies of this unique sample of local AGNs, including a comparison of the 2--10 keV and 14--195 keV X-ray luminosities with the [OIII] 5007Åluminosity and the implications of our results towards measurements of bolometric luminosities.
description: 4 pages, 2 figures, to appear in proceedings for 'X-ray Astronomy 2009', Bologna 09/2009, AIP Conference Series, Eds. A. Comastri, M. Cappi, L. Angelini
Acanthodactylus lineo-maculatus DB.
Creators: name: Müller, F
Publisher: name: Zenodo
Year: 1885
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Squamata
Sauria
Lacertidae
Acanthodactylus
Acanthodactylus lineo-Maculatus

description: Acanthodactylus lineo-maculatus DB.
Marocco v. F M. [1]
description: Published as part of Müller, F, 1885, Vierter Nachtrag zum Katalogder herpetologischen Sammlung des Basler Museums, pp. 668-717 in Verhandlungen der Naturforschenden Gesellschaft in Basel. 7 (3) on page 702, DOI: 10.5962/bhl.part.2388, http://zenodo.org/record/15183591
Scaling form of zero-field-cooled and field-cooled susceptibility in superparamagnet
Creators: name: Suzuki, Masatsugu
name: Fullem, Sharbani I.
name: Suzuki, Itsuko S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The scaling form of the normalized ZFC and FC susceptibility of superparamagnets (SPM's) is presented as a function of the normalized temperature $y$ ($=k_{B}T/K_{u}< V>$), normalized magnetic field $h$ ($=H/H_{K}$), and the width $σ$ of the log-normal distribution of the volumes of nanoparticles, based on the superparamagnetic blocking model with no interaction between the nanoparticles. Here $$ is the average volume, $K_{u}$ is the anisotropy energy, and $H_{K}$ is the anisotropy field. Main features of the experimental results reported in many SPM's can be well explained in terms of the present model. The normalized FC susceptibility increases monotonically increases as the normalized temperature $y$ decreases. The normalized ZFC susceptibility exhibits a peak at the normalized blocking temperature $y_{b}$ ($=k_{B}T_{b}/K_{u}< V>$), forming the $y_{b}$ vs $h$ diagram. For large $σ$ ($σ>0.4$), $y_{b}$ starts to increase with increasing $h$, showing a peak at $h=h_{b}$, and decreases with further increasing $h$. The maximum of $y_{b}$ at $h=h_{b}$ is due to the nonlinearity of the Langevin function. For small $σ$, $y_{b}$ monotonically decreases with increasing $h$. The derivative of the normalized FC magnetization with respect to $h$ shows a peak at $h$ = 0 for small $y$. This is closely related to the pinched form of $M_{FC}$ vs $H$ curve around $H$ = 0 observed in SPM's.
description: 9 pages, 9 figures, submitted to JMMM
Supplementary document for Sparse-aperture Photonics-integrated Interferometer (SPIN) Imaging System: Structural Design and Imaging Quality Analysis - 5506548.pdf
Creators: name: Chen, Tianbao
name: Zeng, Xuefeng
name: Bai, Yingying
name: Zhang, Zhiyu
name: wang, yongjin
name: Zhang, Feng
name: Zhang, Xuejun
Publisher: name: Optica Publishing Group
Year: 2021
Subjects: Uncategorized

description: derivation of imaging principle
Eremias quadrifrons Strauch.
Creators: name: Müller, F
Publisher: name: Zenodo
Year: 1885
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Squamata
Sauria
Lacertidae
Eremias

description: * Eremias quadrifrons Strauch.
Mongolei v. F M. [1]
description: Published as part of Müller, F, 1885, Vierter Nachtrag zum Katalogder herpetologischen Sammlung des Basler Museums, pp. 668-717 in Verhandlungen der Naturforschenden Gesellschaft in Basel. 7 (3) on page 702, DOI: 10.5962/bhl.part.2388, http://zenodo.org/record/15183591
Quantum field-theoretic approaches to quantum tunnelling through external potentials
Creators: name: Zielinski, Rosemary
Publisher: name: The Australian National University
Year: 2023
Subjects: Quantum Field Theory
Quantum Tunnelling

description: Although single-particle quantum tunnelling is well-understood in the context of nonrelativistic quantum mechanics, there is no comprehensive description of such tunnelling mechanism in a quantum field theory (QFT) framework. In contrast to quantum mechanics which can include non-local interactions, QFT necessarily describes all interactions locally via a coupling between quantised fields, allowing for many-particle effects like pair-production which are not accounted for in quantum mechanics. This thesis formulates a description of quantum tunnelling using QFT, by first investigating a massive neutral scalar field interacting with an external localised potential that is not quantised. In this scenario, it is shown that the scattering matrix formalism in QFT can recover tunnelling probabilities consistent with relativistic quantum mechanics for simple potentials. Crucially, the scattering matrix must be computed non-perturbatively in order to reproduce tunnelling faithfully. To incorporate QFT corrections, a coupling to an intermediate quantised neutral scalar field is added to the Lagrangian. An integral equation for the dressed loop-corrected scalar propagator is derived, though it is limited to a certain class of loop-corrected Feynman diagrams. This calculation is applicable to arbitrary external potentials. An approximate form of this propagator is found by assuming that the coupling to the quantised field can be treated perturbatively, while retaining a non-perturbative approach to the interaction with the external field. It is demonstrated that its magnitude can be bounded in the regime where the mass of the intermediate particle is asymptotically large compared to other energy scales. This thesis clarifies the question of tunnelling within QFT, by answering key questions about how to extract scattering matrix elements corresponding to tunnelling amplitudes, and why a non-perturbative treatment is warranted. Additionally, this work provides a foundation for numerically modelling quantum tunnelling using QFT, and extending the concept beyond simple neutral scalar fields to more realistic Lagrangians.
The blazar S5 0014+813: a real or apparent monster?
Creators: name: Ghisellini, G.
name: Foschini, L.
name: Volonteri, M.
name: Ghirlanda, G.
name: Haardt, F.
name: Burlon, D.
name: Tavecchio, F.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A strong hard X-ray luminosity from a blazar flags the presence of a very powerful jet. If the jet power is in turn related to the mass accretion rate, the most luminous hard X-ray blazars should pinpoint the largest accretion rates, and therefore the largest black hole masses. These ideas are confirmed by the Swift satellite observations of the blazar S5 0014+813, at the redshift z=3.366. Swift detected this source with all its three instruments, from the optical to the hard X-rays. Through the construction of its spectral energy distribution we are confident that its optical-UV emission is thermal in origin. Associating it to the emission of a standard optically thick geometrically thin accretion disk, we find a black hole mass of 40 billion solar masses, radiating at 40% the Eddington value. The derived mass is among the largest ever found. Super-Eddington slim disks or thick disks with the presence of a collimating funnel can in principle reduce the black hole mass estimate, but tends to produce spectra bluer than observed.
description: 5 pages, 2 figures, accepted for publication as a letter in MNRAS after minor revision
Enhanced photoluminescence emission from two-dimensional silicon photonic crystal nanocavities
Creators: name: Hauke, N.
name: Zabel, T.
name: Mueller, K.
name: Kaniber, M.
name: Laucht, A.
name: Bougeard, D.
name: Abstreiter, G.
name: Finley, J. J.
name: Arakawa, Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a temperature dependent photoluminescence study of silicon optical nanocavities formed by introducing point defects into two-dimensional photonic crystals. In addition to the prominent TO phonon assisted transition from crystalline silicon at ~1.10 eV we observe a broad defect band luminescence from ~1.05-1.09 eV. Spatially resolved spectroscopy demonstrates that this defect band is present only in the region where air-holes have been etched during the fabrication process. Detectable emission from the cavity mode persists up to room-temperature, in strong contrast the background emission vanishes for T > 150 K. An Ahrrenius type analysis of the temperature dependence of the luminescence signal recorded either in-resonance with the cavity mode, or weakly detuned, suggests that the higher temperature stability may arise from an enhanced internal quantum efficiency due to the Purcell-effect.
Psammophis flavigularis
Creators: name: Müller, F
Publisher: name: Zenodo
Year: 1885
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Squamata
Sauria
Psammophiidae
Psammophis
Psammophis flavigularis

description: * Gerrhosaurus ﬂavigularis Wiegm.
Liberia v. F M. [1]
description: Published as part of Müller, F, 1885, Vierter Nachtrag zum Katalogder herpetologischen Sammlung des Basler Museums, pp. 668-717 in Verhandlungen der Naturforschenden Gesellschaft in Basel. 7 (3) on page 703, DOI: 10.5962/bhl.part.2388, http://zenodo.org/record/15183591
A critical discourse analysis of nursing's response to anti-Indigenous racism in healthcare
Creators: name: Tisdale, Dawn
Publisher: name: University of British Columbia
Year: 2024

description: Background: The impact of colonization, assimilative policies, genocide and the disruption of Indigenous Knowledge systems through the imposition of Western bio-medical supremacy within Canada’s healthcare system has fractured and harmed health and healing practices that have otherwise contributed to healthy Indigenous communities and populations since time immemorial. The harm stemming from colonization and anti-Indigenous racism within healthcare and nursing have resulted in gross inequities and poor health outcomes for Indigenous Peoples in Canada. Nurses play a key role in addressing discourses about anti-Indigenous racism in health systems and the health inequities impacting Indigenous Peoples. The objectives of this thesis are to draw on key policy texts as an entry point for exploring and describing the various discourses, contextual factors, and socio-political trends that influence nursing’s engagement with policies related to Indigenous Peoples’ health. Methods: Primary data was collected from numerous text-based sources via provincial, national and international nursing organizations, including reports, policy products, descriptive articles and print-based intervention materials. This study was guided by critical discourse theory, critical race theory and critical Indigenous theory to analyze the factors, contexts and political trends that influence nursing’s engagement with Indigenous health policies in the Canadian context. Methodologically, critical discourse theory informed the basis of my inquiry in understanding the nature of an intended audience as a variable, where nursing discourse is examined to characterize the audience of nursing regarding its relationships as a profession with Indigenous health policies. Conclusions: These findings have implications for the promotion of Indigenous health and well-being through the disruption of anti-Indigenous racism in health systems by investigating nursing’s role and relationship with Indigenous health policies. In response to intervention materials directed at anti-Indigenous racism in healthcare, this study supports the nursing profession in actioning their positionality to disrupt harmful colonial systems and provide culturally safe healthcare and access for Indigenous Peoples.