cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ball-and-stick models of the dodecane molecule
Creators: name: Chen, Junjie
Publisher: name: figshare
Year: 2022
Subjects: subject: Computational Chemistry
subject: Crystallography
subject: 30301 Chemical Characterisation of Materials
subject: FOS: Chemical sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: 30606 Structural Chemistry and Spectroscopy
subject: 30307 Theory and Design of Materials

description: Dodecane is used as a solvent, distillation chaser, and scintillator component. It is used as a diluent for tributyl phosphate in nuclear reprocessing plants. Alkanes with more than three carbon atoms can be arranged in various ways, forming structural isomers. The simplest isomer of an alkane is the one in which the carbon atoms are arranged in a single chain with no branches. Alkanes experience intermolecular van der Waals forces. Stronger intermolecular van der Waals forces give rise to greater boiling points of alkanes. There are two determinants for the strength of the van der Waals forces: the number of electrons surrounding the molecule, which increases with the alkane's molecular weight, and the surface area of the molecule. Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China
Using HCO$^+$ isotopologues as tracers of gas depletion in protoplanetary disk gaps
Creators: name: Smirnov-Pinchukov, Grigorii V.
name: Semenov, Dmitry A.
name: Akimkin, Vitaly V.
name: Henning, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The widespread rings and gaps seen in the dust continuum in protoplanetary disks are sometimes accompanied by similar substructures seen in molecular line emission. One example is the outer gap at 100 au in AS 209, which shows that the H$_{13}$CO$^+$ and C$_{18}$O emission intensities decrease along with the continuum in the gap, while the DCO$^+$ emission increases inside the gap. We aim to study the behavior of DCO$^+$/H$_{13}$CO$^+$ and DCO$^+$/HCO$^+$ ratios in protoplanetary disk gaps assuming the two scenarios: the gas depletion follows the dust depletion and only the dust is depleted. We first modeled the physical disk structure using the thermo-chemical model ANDES. This 1+1D steady-state disk model calculates the thermal balance of gas and dust and includes the FUV, X-rays, cosmic rays, and other ionization sources together with the reduced chemical network for molecular coolants. Afterward, this physical structure was adopted for calculations of molecular abundances with the extended gas-grain chemical network with deuterium fractionation. Ideal synthetic spectra and 0th-moment maps were produced with LIME. We are able to qualitatively reproduce the increase in the DCO$^+$ intensity and the decrease in the H$_{13}$CO$^+$ and C$_{18}$O intensities inside the disk gap, which is qualitatively similar to what is observed in the outer AS 209 gap. The corresponding disk model assumes that both the gas and dust are depleted in the gap. The model with the gas-rich gap, where only the dust is depleted, produces emission that is too bright in all HCO$^+$ isotopologues and C$_{18}$O. The DCO$^+$/H$_{13}$CO$^+$ line ratio can be used to probe gas depletion in dust continuum gaps outside of the CO snow line. The DCO$^+$/C$_{18}$O line ratio shows a similar, albeit weaker, effect; however, these species can be observed simultaneously with a single ALMA or NOEMA setup.
description: 12 pages, 7 figures, Accepted for publication in Astronomy and Astrophysics
Sphalerons, Antisphalerons and Vortex Rings
Creators: name: Kleihaus, Burkhard
name: Kunz, Jutta
name: Leissner, Michael
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present new classical solutions of Weinberg-Salam theory in the limit of vanishing Weinberg angle. In these static axially symmetric solutions, the Higgs field vanishes either on isolated points on the symmetry axis, or on rings centered around the symmetry axis. The solutions represent systems of sphalerons, antisphalerons, and vortex rings.
description: 8 pages, 3 figures, minor corrections included
The number of Dirac-weighted eigenvalues of Sturm-Liouville equations with integrable potentials and an application to inverse problems
Creators: name: Chen, Xiao
name: Qi, Jiangang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 34A06, 34A55, 34B09

description: In this paper, we further Meirong Zhang, et al.'s work by computing the number of weighted eigenvalues for Sturm-Liouville equations, equipped with general integrable potentials and Dirac weights, under Dirichlet boundary condition. We show that, for a Sturm-Liouville equation with a general integrable potential, if its weight is a positive linear combination of $n$ Dirac Delta functions, then it has at most $n$ (may be less than $n$, or even be $0$) distinct real Dirichlet eigenvalues, or every complex number is a Dirichlet eigenvalue; in particular, under some sharp condition, the number of Dirichlet eigenvalues is exactly $n$. Our main method is to introduce the concepts of characteristics matrix and characteristics polynomial for Sturm-Liouville problem with Dirac weights, and put forward a general and direct algorithm used for computing eigenvalues. As an application, a class of inverse Dirichelt problems for Sturm-Liouville equations involving single Dirac distribution weights is studied.
description: 23 pages
Ball-and-stick models of the pentadecane molecule
Creators: name: Chen, Junjie
Publisher: name: figshare
Year: 2022
Subjects: subject: Computational Chemistry
subject: Crystallography
subject: 30301 Chemical Characterisation of Materials
subject: FOS: Chemical sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: 30606 Structural Chemistry and Spectroscopy
subject: 30307 Theory and Design of Materials

description: Pentadecane is an alkane hydrocarbon with fifteen carbon atoms. The melting points of the alkanes follow a similar trend to boiling points for the same reason. That is, (all other things being equal) the larger the molecule the higher the melting point. There is one significant difference between boiling points and melting points. Solids have a more rigid and fixed structure than liquids. This rigid structure requires energy to break down. Thus, the better put together solid structures will require more energy to break apart. The odd-numbered alkanes have a lower trend in melting points than even-numbered alkanes. This is because even-numbered alkanes pack well in the solid phase, forming a well-organized structure which requires more energy to break apart. The odd-numbered alkanes pack less well and so the "looser"-organized solid packing structure requires less energy to break apart. The melting points of branched-chain alkanes can be either higher or lower than those of the corresponding straight-chain alkanes, again depending on the ability of the alkane in question to pack well in the solid phase. Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China
Determination of angular distributions from the high efficiency solenoidal separator SOLITAIRE
Creators: name: Bezzina, L. T.
name: Simpson, E. C.
name: Hinde, D. J.
name: Dasgupta, M.
name: Carter, I. P.
name: Rafferty, D. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A novel fusion product separator, based on a gas-filled 8 T superconducting solenoid has been developed at the Australian National University. Though the transmission efficiency of the solenoid is very high, precision cross section measurements require knowledge of the angular distribution of the evaporation residues. A method has been developed to deduce the angular distribution of the evaporation residues from the laboratory-frame velocity distribution of the evaporation residues measured at the exit of the separator. The features of this method are presented, focusing on the example of $^{34}$S+$^{89}$Y which is compared to an independent measurement of the angular distribution. The establishment of this method now allows the novel solenoidal separator to be used to obtain reliable, precision fusion cross-sections.
Land Subsidence in California
Creators: name: Sneed, Michelle; Faunt, Claudia
Publisher: name: U.S. Geological Survey
Year: 2015
Subjects: land subsidence, groundwater, california

description: Topical website covering various aspects of land subsidence in California: affected areas, projects, drought indicators data map, how subsidence is measured, causes & effects, modeling subsidence, and publications.
Internationale ökumenische Friedenskonvokation (18. bis 25. Mai 2011) in Kingston/Jamaica
Creators: name: Kiroudi, Marina
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 60 Nr. 3 (2011): Ökumenische Rundschau, Band 60, Heft 3
Monopoles, noncommutative gauge theories in the BPS limit and some simple gauge groups
Creators: name: Martin, C. P.
name: Tamarit, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: For three conspicuous gauge groups, namely, SU(2), SU(3) and SO(5), and at first order in the noncommutative parameter matrix hθ^{μν}, we construct smooth monopole --and, some two-monopole-- fields that solve the noncommutative Yang-Mills-Higgs equations in the BPS limit and that are formal power series in hθ^{μν}. We show that there exist noncommutative BPS (multi-)monopole field configurations that are formal power series in hθ^{μν} if, and only if, two a priori free parameters of the Seiberg-Witten map take very specific values. These parameters, that are not associated to field redefinitions nor to gauge transformations, have thus values that give rise to sharp physical effects.
description: 30 pages, no figures
Automorphic properties of generating functions for generalized rank moments and Durfee symbols
Creators: name: Bringmann, Kathrin
name: Lovejoy, Jeremy
name: Osburn, Robert
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: Primary: 05A17, 11F03, Secondary: 33D15

description: We define two-parameter generalizations of two combinatorial constructions of Andrews: the kth symmetrized rank moment and the k-marked Durfee symbol. We prove that three specializations of the associated generating functions are so-called quasimock theta functions, while a fourth specialization gives quasimodular forms. We then define a two-parameter generalization of Andrews' smallest parts function and note that this leads to quasimock theta functions as well. The automorphic properties are deduced using q-series identities relating the relevant generating functions to known mock theta functions.
description: 18 pages
The risk of non-target species poisoning from brodifacoum used to eradicate rats from Langara Island, British Columbia, Canada
Creators: name: Howald, Gregory Robert
Publisher: name: University of British Columbia
Year: 2009

description: In 1995, the Canadian Wildlife Service attempted to eradicate introduced Norway rats (Rattus norvegicus) from Langara Island and adjacent Cox and Lucy Islands with the application of the second generation anticoagulant rodenticide brodifacoum. However, anticoagulant rodenticides are non-species specific pesticides and pose a poisoning risk to non-target species. This thesis addresses the short term poisoning impacts to non-target species from brodifacoum used to eradicate the rats from Langara and Lucy Island. In 1994, during testing of the baiting protocol on Lucy Island, the native dusky shrew (Sorex monticolus elassodon) population size fell from an estimated 25 unique shrews/ha before the baiting to four unique shrews/ha after the baiting. This prompted a monitoring program in three regions on Langara Island in 1995. While shrews were attracted to bait in stations, the decline in their population was non-significant. Shrews in breeding condition were at greater risk of poisoning likely due to their ability to range widely. Shrews entered and chewed on bait blocks in up to 80% of bait stations. The risk of secondary poisoning to avian scavengers from poisoned toxic rat carcasses was investigated. In 1994, common ravens (Corvus corax) were identified as the most significant scavenger of rat carcasses. In 1995, two of 15 radio-collared Norway rats poisoned with brodifacoum died above ground and one was scavenged. Whole body brodifacoum residues from other rats found dead above ground ranged from 2.40-16.51 mg/kg. Between 1995 and 1996, 20 raven remains were found or reported. In 1995, 13 raven livers tested positive for brodifacoum. Ravens were secondarily poisoned from scavenging rat carcasses and primarily from raiding bait stations. Brodifacoum was detected in Northwestern crows (Corvus caurinus) 9 months after the cessation of baiting on Lucy Island in 1994, but before the baiting on Langara Island. Brodifacoum residues were detected in the plasma of 15% of bald eagles (Haliaeetus leucocephalus) sampled (0.037-1.74 ppm). The invertebrates as a source of brodifacoum to non-target species was investigated. Snails (Vespericola sp. and Haplotrema sp.) and banana slugs (Ariolimax sp.) were common and abundant invertebrates found feeding on bait in stations. The blue coloured bait could be seen through the translucent bodies and the molluscs tested positive for brodifacoum. Carrion insects readily consumed rat carcasses containing brodifacoum. Blowfly larva (Calliphora sp.) tested positive for brodifacoum residues. The invertebrates found feeding on the bait and carrion insects were a secondary and tertiary poisoning risk to non-target species such as the song sparrow (Melospiza melodia).
Equidistribution of expanding translates of curves and Dirichlet's theorem on Diophantine approximation
Creators: name: Shah, Nimish A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 22E40; 11J83

description: We show that for almost all points on any analytic curve on R^{k} which is not contained in a proper affine subspace, the Dirichlet's theorem on simultaneous approximation, as well as its dual result for simultaneous approximation of linear forms, cannot be improved. The result is obtained by proving asymptotic equidistribution of evolution of a curve on a strongly unstable leaf under certain partially hyperbolic flow on the space of unimodular lattices in R^{k+1}. The proof involves ergodic properties of unipotent flows on homogeneous spaces.
description: 26 pages
Charge excitations in SU(n) spin chains: exact results for the 1/r^2 model
Creators: name: Thomale, Ronny
name: Schuricht, Dirk
name: Greiter, Martin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the one- and two-holon excitations of the SU(3) Kuramoto-Yokoyama model on the level of explicit wave functions, and generalize the calculations to the case of SU(n). We obtain the exact energies and the single holon momenta, which we find fractionally spaced according to fractional statistics with statistical parameter g=1/n.
description: 28 pages revtex style
Letter from J. E. [John Edgar] McAllister to Mr. [James] Goldie, October 21, 1916
Creators: name: McAllister, John Edgar
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to Mr. [James] Goldie from J. E. [John Edgar] McAllister, dated October 21, 1916, telling James Goldie when he is leaving for the West.
Non-equilibrium dynamics in Holography
Creators: name: Grieninger, Sebastian
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate aspects of non-equilibrium dynamics of strongly coupled field theories within holography. We establish a hydrodynamic description for anomalous quantum field theories subject to a strong external field for the first time in the literature. Within holography, we explicitly demonstrate which transport coefficients are non-zero due to the chiral anomaly and thus important for the transport. We show that the standard treatment of the hydrodynamics for spontaneously broken translational invariance is more subtle and has to be revised since the description is missing a novel thermodynamic coefficient. Within holographic massive gravity, we lay out a road map for extensions of hydrodynamics to momentum dissipation. Furthermore, we study the imprint of spontaneously broken translations beyond linear response theory in terms of periodically driven strongly coupled quantum field theories. Another important non-equilibrium scenario specially important for the understanding of our universe is quantum gravity in de-Sitter. Recently, the bold claim of the so-called swampland conjectures has attracted great interest since it banishes all stable theories of quantum gravity on de-Sitter with matter into swampland. Within the well-defined framework of the DS/dS correspondence, we set out to derive consistency conditions on the matter content in de-Sitter. Surprisingly, our proposed bound is violated by any reasonable form of matter. In our discussion, we find a novel one-parameter family of entangling surfaces. The last chapter is dedicated to solvable irrelevant deformations in quantum field theory -- the $T\bar T$ deformation. Within holography, we derive the entanglement entropies for generic subintervals on a sphere. We also resolve the confusion in the literature about a seeming mismatch between the holographic field theory results for the entanglement entropy in general dimensions.
description: 100 pages+appendices, 34+4 figures, PhD Thesis FSU Jena, July 2020; includes results from arXiv:1905.09164, arXiv:1905.09488, arXiv:1910.06331, arXiv:2001.05737, arXiv: 2012.09183, arXiv:1904.02170, arXiv:1908.10372, arXiv:2005.01725
title:  L’arco dell’identità e Paul Ricœur
Creators: name: Canullo  ,  Carla
Publisher: name: Roma TrE-Press
Year: 2021

description: Così come per l’interpretazione Ricœur ha parlato di “arco ermeneutico” – che tiene insieme i termini che Dilthey aveva separato, ossia spiegare e comprendere – allo stesso modo si può leggere l’arco dell’identità che il filosofo francese ha tracciato fin da Le volontaire et l’involontaire introducendo per la prima volta l’espressione del cogito brisé, cogito infranto. A partire da questo concetto Ricœur ha tracciato l’arco dell’identità, di cui ha progressivamente mostrato la complessità, fino alla celebre formulazione dell’identità narrativa, nella quale si sintetizza il cuore di un soggetto che non è autoposizione ma (un) “chi” vivente di cui l’identità narrativa svolge la dimensione temporale. Un’altra forma, non ricœuriana, è l’identità oikologica, ossia l’identità di chi “è” e si scopre dimorando “davanti a” – davanti a un Tu, davanti al mondo, alla religione, alla cultura o davanti a un altro “chi”. Con ciò l’arco dell’identità si arricchisce: da singola tensione in serie di archi che, insieme, svolgono l’arcata che rilancia l’identità verso le nuove forme che l’esperienza potrà assegnarle.
description: B@belonline vol. 8 Paul Ricœur: Narrative Identity Between Hermeneutics and Psychoanalysis/Paul Ricœur: L’identità narrativa tra ermeneutica e psicoanalisi
De l'équation de prescription de courbure scalaire aux équations de contrainte en relativité générale sur une variété asymptotiquement hyperbolique
Creators: name: Gicquaud, Romain
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Q75, 53C21, 35J65, 35J70

description: Two problems concerning asymptotically hyperbolic manifolds with an inner boundary are studied. First, we study scalar curvature presciption with either Dirichlet or mean curvature prescription interior boundary condition. Then we apply those results to the Lichnerowicz equation with (future or past) apparent horizon interior boundary condition. In the last part we show how to construct TT-tensors. Thus we obtain Cauchy data with constant mean curvature for Einstein vacuum equations.
description: Added references
Pakistan and Afghanistan Tussle over Durand Line
Creators: name: Hashimy, Sayed Qudrat
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 480310
subject: Public international law
classificationCode: 440808
subject: International relations
classificationCode: 440505
subject: Intersectional studies
classificationCode: 440811
subject: Political theory and political philosophy
classificationCode: 451820
subject: Pacific Peoples politics
classificationCode: 440606
subject: Political geography
classificationCode: 440803
subject: Comparative government and politics
classificationCode: 440899
subject: Political science not elsewhere classified
classificationCode: 440807
subject: Government and politics of Asia and the Pacific
classificationCode: 451819
subject: Pacific Peoples political participation and representation
classificationCode: 430316
subject: International history
classificationCode: 430301
subject: Asian history
classificationCode: 480303
subject: Conflict of laws (incl. private international law)
classificationCode: 480308
subject: International trade and investment law
classificationCode: 489999
subject: Other law and legal studies not elsewhere classified

description: The Durand Line (DL), which separates Pakistan from Afghanistan, is home to the Pashtuns on both sides of the border. Afghanistan has continuously rejected the Durand Line and upheld the right to self-determination for Pashtuns included within Pakistan by that line since 1947. Pakistan denies this claim, upholding the legality of the Durand Line, and considers the Afghan claim illegal under international law. Although it has been the official border between the two countries for more than a century, the Durand Line has been controversial for the local people. Pakistan has been pursuing an ambiguous policy towards Afghanistan and the international community for a long time. This article examines the implications of the Durand Line and highlights the strategies of both Pakistan and Afghanistan. The present study employs doctrinal research and is limited to the positions of Afghanistan and Pakistan over the Durand Line.
Methodology for In-flight Flat-field Calibration of the Lyman-alpha Solar Telescope (LST)
Creators: name: Li, Jing-Wei
name: Li, Hui
name: Li, Ying
name: Feng, Li
name: Huang, Yu
name: Zhao, Jie
name: Lu, Lei
name: Ying, Bei-Li
name: Xue, Jian-Chao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Flat-field reflects the non-uniformity of the photometric response at the focal plane of an instrument, which uses digital image sensors, such as Charge Coupled Device (CCD) and Complementary Metal-Oxide-Semiconductor (CMOS). This non-uniformity must corrected before being used for scientific research. In this paper, we assess various candidate methods via simulation using available data so as to figure the in-flight flat-field calibration methodology for the Lyman-alpha Solar Telescope (LST). LST is one of the payloads for the Advanced Space-based Solar Observatory (ASO-S) mission and consists of three instruments: a White-light Solar Telescope (WST), a Solar Disk Imager (SDI) and a dual-waveband Solar Corona Imager (SCI). In our simulations, data from the Helioseismic and Magnetic Imager (HMI) and Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) mission are used. Our results show that the normal KLL method is appropriate for in-flight flat-field calibration of WST and implementing a transmissive diffuser is applicable for SCI. For the in-flight flat-field calibration of SDI, we recommend the KLL method with off-pointing images with defocused resolution of around 18", and use the local correlation tracking (LCT) algorithm instead of limb-fitting to determine the relative dis-placements between different images.
Quantization of affine bodies. Theory and applications in mechanics of structured media
Creators: name: Sławianowski, Jan J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Discussed is kinematics and dynamics of bodies with affine degrees of freedom, i.e., homogeneously deformable "gyroscopes". The special stress is laid on the status and physical justification of affine dynamical invariance. On the basis of classical Hamiltonian formalism the Schroedinger quantization procedure is performed. Some methods of the partial separation of variables, analytical treatment and search of rigorous solutions are developed. The possiblity of applications in theory of structured media, nanophysics, and molecular physics is discussed.
Going back to basics: accelerating exoplanet transit modelling using Taylor-series expansion of the orbital motion
Creators: name: Parviainen, Hannu
name: Korth, Judith
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A significant fraction of an exoplanet transit model evaluation time is spent calculating projected distances between the planet and its host star. This is a relatively fast operation for a circular orbit, but slower for an eccentric one. However, because the planet's position and its time derivatives are constant for any specific point in orbital phase, the projected distance can be calculated rapidly and accurately in the vicinity of the transit by expanding the planet's $x$ and $y$ positions in the sky plane into a Taylor series at mid-transit. Calculating the projected distance for an elliptical orbit using the four first time derivatives of the position vector (velocity, acceleration, jerk, and snap) is $\sim100$ times faster than calculating it using the Newton's method, and also significantly faster than calculating $z$ for a circular orbit because the approach does not use numerically expensive trigonometric functions. The speed gain in the projected distance calculation leads to 2-25 times faster transit model evaluation speed, depending on the transit model complexity and orbital eccentricity. Calculation of the four position derivatives using numerical differentiation takes $\sim1\,μ$s with a modern laptop and needs to be done only once for a given orbit, and the maximum error the approximation introduces to a transit light curve is below 1~ppm for the major part of the physically plausible orbital parameter space.
description: Accepted to MNRAS
Ball-and-stick models of the hexadecane molecule
Creators: name: Chen, Junjie
Publisher: name: figshare
Year: 2022
Subjects: subject: Computational Chemistry
subject: Crystallography
subject: 30301 Chemical Characterisation of Materials
subject: FOS: Chemical sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: 30606 Structural Chemistry and Spectroscopy
subject: 30307 Theory and Design of Materials

description: Hexadecane (also called cetane) is an alkane hydrocarbon with sixteen carbon atoms. Hexadecane consists of a chain of 16 carbon atoms, with three hydrogen atoms bonded to the two end carbon atoms, and two hydrogens bonded to each of the 14 other carbon atoms. Most organic molecules, including all alkanes, are not planar but are instead characterized by three-dimensional structures. Methane, for example, has the shape of a regular tetrahedron with carbon at the centre and a hydrogen atom at each corner. Each hydrogen-carbon-hydrogen angle in methane is 109.5°, and each carbon-hydrogen bond distance is 1.09 angstroms. Higher alkanes such as butane have bonds that are tetrahedrally disposed on each carbon except that the resulting carbon-carbon-carbon and hydrogen-carbon-hydrogen angles are slightly larger and smaller, respectively, than the ideal value of 109.5° characteristic of a perfectly symmetrical tetrahedron. Carbon-carbon bond distances in alkanes are normally close to 1.53 angstroms. The densities of liquid hydrocarbons are all less than that of water, which is quite polar and possesses strong intermolecular attractive forces. All hydrocarbons are insoluble in water and, being less dense than water, float on its surface. Hydrocarbons are, however, usually soluble in one another as well as in organic solvents such as diethyl ether. The viscosity of liquid alkanes increases with the number of carbons. Increased intermolecular attractive forces, as well as an increase in the extent to which nearby molecules become entangled when they have an extended shape, cause unbranched alkanes to be more viscous than their branched-chain isomers. Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China
Challenging the myths and assumptions : intensive case managers’ experiences
Creators: name: Hamilton, Heather
Publisher: name: University of British Columbia
Year: 2009

description: Although there has been much research on intensive case management, little of it has focused on the intensive case managers themselves. Many assumptions exist about their experiences; however, these have not been adequately explored. A qualitative study was conducted to explore the experiences of intensive case managers. In-depth interviews were conducted with each intensive case manager and the interviews were analyzed. Four main findings emerged from the study; the participants have a specific set of beliefs that guide the way they interact with clients; the participants identify themselves as having a different set of goals than traditional mental health services; these differences can conflict with the goals of the larger mental health system; and the intensive case management team plays an important role in the day-to-day functioning of the team. The findings of this study provide insight into the experiences of the intensive case managers and have important implications for future planning of intensive case management teams and for intensive case managers themselves.
Classical and Quantum Chaos and Control of Heat Flow
Creators: name: Casati, Giulio
name: Mejia-Monasterio, Carlos
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We discuss the problem of heat conduction in classical and quantum low dimensional systems from a microscopic point of view. At the classical level we provide convincing numerical evidence for the validity of Fourier law of heat conduction in linear mixing systems, i.e. in systems without exponential instability. At the quantum level, where motion is characterized by the lack of exponential dynamical instability, we show that the validity of Fourier law is in direct relation with the onset of quantum chaos. We then study the phenomenon of thermal rectification and briefly discuss the different types of microscopic mechanisms that lead to the rectification of heat flow. The control of heat conduction by nonlinearity opens the possibility to propose new devices such as a thermal rectifier.
description: 8 Pages. in Proceedings of the Dynamic Days Asia Pacific 4
Letter from J. E. [John Edgar] McAllister to Mr. [James] Goldie, October 27, 1916
Creators: name: McAllister, John Edgar
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to Mr. [James] Goldie from J. E. [John Edgar] McAllister, dated October 27, 1916, regarding J. E. McAllister's travel plans and his arrival date in Vernon.
An in-situ synchrotron diffraction study of stress relaxation in titanium: Effect of temperature and oxygen on cold dwell fatigue
Creators: name: Xiong, Yi
name: Karamched, Phani S.
name: Nguyen, Chi-Toan
name: Collins, David M.
name: Grilli, Nicolo
name: Magazzeni, Christopher M.
name: Tarleton, Edmund
name: Wilkinson, Angus J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: There is a long-standing technological problem in which a stress dwell during cyclic loading at room temperature in Ti causes a significant fatigue life reduction. It is thought that localised time dependent plasticity in soft grains favourably oriented for easy plastic slip leads to load shedding and an increase in stress within a neighbouring hard grain poorly oriented for easy slip. Quantifying this time dependent plasticity process is key to understand the complex cold dwell fatigue problem. Knowing the effect of operating temperature and oxygen content on cold dwell fatigue will be beneficial for future alloy design to address this problem. In this work, synchrotron X-ray diffraction during stress relaxation experiments was used to characterise the time dependent plastic behaviour of two commercially pure titanium samples (grade 1 and grade 4) with different oxygen content at 4 different temperatures (room temperature, 75C, 145C and 250C). Lattice strains were measured by tracking the diffraction peak shift from multiple crystallographic plane families (21 diffraction rings) as a function of their orientation with respect to the loading direction. Critical resolved shear stress, activation energy and activation volume were established for both prismatic and basal slip as a function of temperature and oxygen content by fitting a crystal plasticity finite element model to the lattice strain relaxation responses measured along the loading axis for five strong reflections. Higher strain rate sensitivity was found to lead to higher plasticity during cold dwell.
Teleparallelism, modified Born-Infeld nonlinearity and space-time as a micromorphic ether
Creators: name: Sławianowski, Jan J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Discussed are field-theoretic models with degrees of freedom described by the $n$-leg field in an $n$-dimensional "space-time" manifold. Lagrangians are generally-covariant and invariant under the internal group GL$(n,{\bf R})$. It is shown that the resulting field equations have some correspondence with Einstein theory and possess homogeneous vacuum solutions given by semisimple Lie group spaces or their appropriate deformations. There exists a characteristic link with the generalized Born-Infeld type nonlinearity and relativistic mechanics of structured continua. In our model signature is not introduced by hands, but is given by integration constants for certain differential equations.
Cavity enhanced light scattering in optical lattices to probe atomic quantum statistics
Creators: name: Mekhov, Igor B.
name: Maschler, Christoph
name: Ritsch, Helmut
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Different quantum states of atoms in optical lattices can be nondestructively monitored by off-resonant collective light scattering into a cavity. Angle resolved measurements of photon number and variance give information about atom-number fluctuations and pair correlations without single-site access. Observation at angles of diffraction minima provides information on quantum fluctuations insensitive to classical noise. For transverse probing, no photon is scattered into a cavity from a Mott insulator phase, while the photon number is proportional to the atom number for a superfluid.
description: 4 pages, 3 figures, to published in Phys. Rev. Lett. (March 2007)
Orbifold Gromov--Witten theory of weighted blowups
Creators: name: Chen, Bohui
name: Du, Cheng-Yong
name: Wang, Rui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D45, 14N35

description: Consider a compact symplectic sub-orbifold groupoid $\sf S$ of a compact symplectic orbifold groupoid $(\mathsf X,ω)$. Let $\mathsf X_{\mathfrak a}$ be the weight-$\mathfrak a$ blowup of $\sf X$ along $\sf S$, and $\mathsf D_{\mathfrak a}=\mathsf{PN}_{\mathfrak a}$ be the exceptional divisor, where $\sf N$ is the normal bundle of $\sf S$ in $\sf X$. In this paper we show that the absolute orbifold Gromov--Witten theory of $\mathsf X_{\mathfrak a}$ can be effectively and uniquely reconstructed from the absolute orbifold Gromov--Witten theories of $\sf X$, $\sf S$ and $\mathsf D_{\mathfrak a}$, the natural restriction homomorphism $H^*_{\text{CR}}({\sf X})\rightarrow H^*_{\text{CR}}({\sf S})$ and the first Chern class of the tautological line bundle over $\mathsf D_{\mathfrak a}$. To achieve this we first prove similar results for the relative orbifold Gromov--Witten theories of $(\mathsf X_{\mathfrak a}|\mathsf D_{\mathfrak a})$ and $(\mathsf N_{\mathfrak a}|\mathsf D_{\mathfrak a})$. As applications of these results, we prove an orbifold version of a conjecture of Maulik--Pandharipande on the Gromov--Witten theory of blowups along complete intersections, a conjecture on the Gromov--Witten theory of root constructions and a conjecture on Leray--Hirsch result for orbifold Gromov--Witten theory of Tseng--You.
description: 44pages; some typos fixed; comments are welcome; accepted for publication in SCIENCE CHINA Mathematics
Epispathidium ascendens Foissner 1987
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Gymnostomatea
Spathidiida
Spathidiidae
Epispathidium
Epispathidium ascendens

description: Epispathidium ascendens (Wenzel, 1955) Foissner, 1987
Distribution. VENEZUELA: South margin of the Henri Pittier National Park, Biological Station Rancho Grande (Foissner 2016).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 16, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
QCD Evolution of Jets in the Quark-Gluon Plasma
Creators: name: Domdey, S.
name: Ingelman, G.
name: Pirner, H. J.
name: Rathsman, J.
name: Stachel, J.
name: Zapp, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The quark-gluon plasma (QGP) can be explored in relativistic heavy ion collisions by the jet quenching signature, i.e. by the energy loss of a high energy quark or gluon traversing the plasma. We introduce a novel QCD evolution formalism in the leading logarithm approximation, where normal parton radiation is interleaved with scattering on the plasma gluons occuring at a similar time scale. The idea is elaborated in two approaches. One extends the DGLAP evolution equations for fragmentation functions to include scatterings in the medium, which facilitates numerical solutions for comparison with data and provides a basis for a Monte Carlo implementation. The other approach is more general by including also the transverse momentum dependence of the jet evolution, which allows a separation of the scales also for the scattering term and provides a basis for analytical investigations. The two approaches are shown to be related and give the same characteristic softening of the jet depending on the temperature of the plasma. A substantial effect is found at the RHIC energy and is further enhanced at LHC. Systematic studies of data on the energy loss could, therefore, demonstrate the existence of the QGP and probe its properties.
description: 16 pages, 3 figures, v2: added comment in section II, v3: references added, extended discussion, accepted for publication in Nuclear Physics A
Claimed detection of PH$_3$ in the clouds of Venus is consistent with mesospheric SO$_2$
Creators: name: Lincowski, Andrew P.
name: Meadows, Victoria S.
name: Crisp, David
name: Akins, Alex B.
name: Schwieterman, Edward W.
name: Arney, Giada N.
name: Wong, Michael L.
name: Steffes, Paul G.
name: Parenteau, M. Niki
name: Domagal-Goldman, Shawn
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The observation of a 266.94 GHz feature in the Venus spectrum has been attributed to PH$_3$ in the Venus clouds, suggesting unexpected geological, chemical or even biological processes. Since both PH$_3$ and SO$_2$ are spectrally active near 266.94 GHz, the contribution to this line from SO$_2$ must be determined before it can be attributed, in whole or part, to PH$_3$. An undetected SO$_2$ reference line, interpreted as an unexpectedly low SO$_2$ abundance, suggested that the 266.94 GHz feature could be attributed primarily to PH$_3$. However, the low SO$_2$ and the inference that PH$_3$ was in the cloud deck posed an apparent contradiction. Here we use a radiative transfer model to analyze the PH$_3$ discovery, and explore the detectability of different vertical distributions of PH$_3$ and SO$_2$. We find that the 266.94 GHz line does not originate in the clouds, but above 80 km in the Venus mesosphere. This level of line formation is inconsistent with chemical modeling that assumes generation of PH$_3$ in the Venus clouds. Given the extremely short chemical lifetime of PH$_3$ in the Venus mesosphere, an implausibly high source flux would be needed to maintain the observed value of 20$\pm$10 ppb. We find that typical Venus SO$_2$ vertical distributions and abundances fit the JCMT 266.94 GHz feature, and the resulting SO$_2$ reference line at 267.54 GHz would have remained undetectable in the ALMA data due to line dilution. We conclude that nominal mesospheric SO$_2$ is a more plausible explanation for the JCMT and ALMA data than PH$_3$.
description: 12 pages, 5 figures, accepted to ApJL
A Model for an Irreversible Bias Current in the Superconducting Qubit Measurement Process
Creators: name: Hutchinson, G. D.
name: Holmes, C. A.
name: Stace, T. M.
name: Spiller, T. P.
name: Milburn, G. J.
name: Barrett, S. D.
name: Hasko, D. G.
name: Williams, D. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The superconducting charge-phase `Quantronium' qubit is considered in order to develop a model for the measurement process used in the experiment of Vion et. al. [Science 296 886 (2002)]. For this model we propose a method for including the bias current in the read-out process in a fundamentally irreversible way, which to first order, is approximated by the Josephson junction tilted-washboard potential phenomenology. The decohering bias current is introduced in the form of a Lindblad operator and the Wigner function for the current biased read-out Josephson junction is derived and analyzed. During the read-out current pulse used in the Quantronium experiment we find that the coherence of the qubit initially prepared in a symmetric superposition state is lost at a time of 0.2 nanoseconds after the bias current pulse has been applied. A timescale which is much shorter than the experimental readout time. Additionally we look at the effect of Johnson-Nyquist noise with zero mean from the current source during the qubit manipulation and show that the decoherence due to the irreversible bias current description is an order of magnitude smaller than that found through adding noise to the reversible tilted washboard potential model. Our irreversible bias current model is also applicable to the persistent current based qubits where the state is measured according to its flux via a small inductance direct current superconducting quantum interference device (DC-SQUID).
description: 42 pages and 7 figures
Field report on recording Little Lake Indian language in Vallejo
Creators: name: Willits, Skip
name: Oswalt Family
name: Oswalt, Robert L.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: pej

description: Photocopy of Willits' typed manuscript "Field report on recording Little Lake Indian language in Vallejo", with hand annotations by Oswalt and related correspondence between Willits and Oswalt.
A novel approach to assess hydrogen embrittlement (HE) susceptibility and mechanisms in high strength martensitic steels
Creators: name: Das, Tuhin
name: Brahimi, Salim V.
name: Song, Jun
name: Yue, Stephen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A rapid fracture test in four-point bending is proposed to assess hydrogen embrittlement (HE) susceptibility of high strength martensitic steels. The novelty of this technique is the rapid rate of loading, whereas conventional approaches require prolonged slow strain rate testing. The essential fractographic features required to identify the mechanisms of HE failure remain evident, despite the fast loading conditions. To demonstrate these attributes, two quenched and tempered steels at two different strength levels were tested, with and without pre-charging of hydrogen. Stress coupled hydrogen diffusion finite element analysis (FEA) was performed to calculate both stress and hydrogen concentration distributions. In addition to fractographic analysis, a mechanistic description rooted in hydrogen enhanced decohesion (HEDE) mechanism was used to corroborate the mechanical test data. The study shows that the approach is capable of quantifying HE susceptibility by being responsive to key factors affecting hydrogen induced fracture, thus developing further understanding on the HE of martensitic steels.
description: 62 pages, 26 figures