cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Conductor of Stravinsky’s Histoire du soldat, Humperdinck’s Hansel and Gretel, and Mozart’s La finta giardiniera
Creators: name: Riccio, Andrew Del
Publisher: name: University of British Columbia
Year: 2009

description: This thesis is a compilation of performances from seasons of three different works; Histoire du soldat by Igor Stravinsky, Hansel und Gretel by Engelbert Humperdinck and La Finta Giardiniera by Wolfgang Amadeus Mozart. Each work is presented twice with different camera views. The first is 'reverse angle' (or near reverse) which gives the viewer an impression of the conductor as seen by the performers. The second is 'house view', the stage as seen from the audience: in places the conductor is also visible. Additionally, these two perspectives give the viewer different audio impressions, that of both the performer and the audience. In each case, there is a marked difference in balance of singers, speakers and instrumental ensemble. Tape one is of Histoire du soldat by Igor Stravinsky, performed at the Frederick Wood Theatre at the University of British Colombia. The performing ensemble was a collaboration between the author, acting as Musical Director and Bachelor of Arts (Honours) student Sabine Sengmueller (Stage Director), with members of cast and instrumental ensemble other students. The reverse angle view is of performances on November 15 and 17, as indicated in the table of contents. The house view is taken from the performance on November 20. Tapes two and three are of Humperdinck's Hansel und Gretel. These were performed at the Sagebrush Theatre in Kamloops, with the Kamloops Symphony Orchestra and UBC Opera Ensemble performing on December 13. Again, tape two is reverse angle and tape three, house view. For this performance, the author is acting as Assistant Conductor to Mr Bruce Dunn, Music Director of the Kamloops Symphony. The final tapes, number 4 and 5, are of a collaborative project by the University of British Colombia School of Music Symphony Orchestra and Opera Ensemble. Professor Jesse Read, head of the School or Music, was the conductor for this season. The author acted as Assistant Conductor, performing on April 2, 1998. The work performed, La Finta Giardiniera by Wolfgang Amadeus Mozart. It is important to note that the reverse angle (tape 4) was compromised by the presence of the stage set, and a lack of technical equipment at the Chan Centre for the Performing Arts, where the performances occurred. The angle shown is from the choir stalls, opposite prompt side.
A photospheric and chromospheric activity analysis of the quiescent retrograde-planet host $ν$ Octantis A
Creators: name: Ramm, David
name: Robertson, Paul
name: Reffert, Sabine
name: Gunn, Fraser
name: Trifonov, Trifon
name: Pollard, Karen
name: Cantalloube, Faustine
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The single-lined spectroscopic binary $ν$ Octantis provided evidence of the first conjectured circumstellar planet demanding an orbit retrograde to the stellar orbits. The planet-like behaviour is now based on 1437 radial velocities (RVs) acquired from 2001 to 2013. $ν$ Oct's semimajor axis is only 2.6 AU with the candidate planet orbiting $ν$ Oct A about midway between. These details seriously challenge our understanding of planet formation and our decisive modelling of orbit reconfiguration and stability scenarios. However, all non-planetary explanations are also inconsistent with numerous qualitative and quantitative tests including previous spectroscopic studies of bisectors and line-depth ratios, photometry from Hipparcos and the more recent space missions TESS and GAIA (whose increased parallax classifies $ν$ Oct A closer still to a subgiant ~ K1 IV). We conducted the first large survey of $ν$ Oct A's chromosphere: 198 Ca II H-line and 1160 H $α$ indices using spectra from a previous RV campaign (2009-2013). We also acquired 135 spectra (2018-2020) primarily used for additional line-depth ratios, which are extremely sensitive to the photosphere's temperature. We found no significant RV-correlated variability. Our line-depth ratios indicate temperature variations of only $\pm$ 4 K, as achieved previously. Our atypical Ca II analysis models the indices in terms of S/N and includes covariance significantly in their errors. The H $α$ indices have a quasi-periodic variability which we demonstrate is due to telluric lines. Our new evidence provides further multiple arguments realistically only in favor of the planet.
description: 14 pages, 16 figures, 2 tables, accepted 2021 January 7
Deliverable 2.7 Project Plan; Quality Plan; Ethical Procedures- UPDATE 1
Creators: name: ARETE
Publisher: name: Zenodo
Year: 2021

description: The D2.7 “Project Plan; Quality Plan; Ethical procedures-UPDATE 1” is an update of the Deliverable D2.2, which was submitted in M3 and includes updates for D1.1 and D1.2 in terms of Ethical Procedures. The following updates have been made by the ARETE consortium between M4- M14: ● The project duration has been changed to 42 months;
 ● The reporting period has been changed;
 ● The project partner has been changed; ● Annex 1 (Description of Action - DoA) has been changed;
 ● Annex 2 (estimated budget of action) has been changed;
 ● The ARETE project External Ethics Advisory Board (EEAB) has been set up; ● The EEAB has been approved the ARETE project ethics requirements; This document is based on several key documents/meetings including:
 ● The ARETE Grant Agreement – GA Number 856533 (Revised in July 2020);
 ● The 1st Project Steering Committee meeting (PSC) 4 March 2020, online;
 ● The 2nd PSC meeting 26 March 2020, online;
 ● The 2nd General Assembly (GA) and 3rd PSC meeting 20-21 August 2020, online; ● The 3rd GA and 4th PSC meeting 18-19 November 2020, online; ● The ARETE 12 month review meeting 4 December 2020, online; ● The D2.6 Data Management Plan submitted in M6; ● The D2.4 Management reports (Contractual, Financial and Technical) – UPDATE 1 submitted in M12; This report is intended to be a live document and although no significant changes to this document are envisioned, some updates will be provided in M26 based on the decisions of the General Assembly (GA).
description: This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 856533.
Towards a quantitative understanding of the Delta I=1/2 rule
Creators: name: Hernandez, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A recently proposed strategy to quantify the role of the charm quark mass in the $ΔI=1/2$ rule is reviewed. Results for the low-energy couplings of the $ΔS=1$ chiral effective Hamiltonian in a theory with a light charm quark (GIM limit) are obtained through a matching of three-point correlation functions computed in Chiral Perturbation Theory and in quenched lattice QCD. We observe a large $ΔI=1/2$ enhancement, which is not large enough to explain the experimental result, but suggests significant long-distance contributions to the physical $ΔI=1/2$ which are unrelated to penguin contractions or operators.
description: 16 pages, 8 figures, Plenary talk at Lattice 2006, to appear in Proceedings of Science PoS(LAT2006)012
A Systematic Derivation of the Riemannian Barrett-Crane Intertwiner
Creators: name: Maran, Suresh K
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Barrett-Crane intertwiner for the Riemannian general relativity is systematically derived by solving the quantum Barrett-Crane constraints corresponding to a tetrahedron (except for the non-degeneracy condition). It was shown by Reisenberger that the Barrett-Crane intertwiner is the unique solution. The systematic derivation can be considered as an alternative proof of the uniqueness. The new element in the derivation is the rigorous imposition of the cross-simplicity constraint.
description: 10 pages
On Making Magnetic-Flux-Rope $Ω$ Loops for Solar Bipolar Magnetic Regions of All Sizes by Convection Cells
Creators: name: Moore, Ronald L.
name: Tiwari, Sanjiv K.
name: Panesar, Navdeep K.
name: Sterling, Alphonse C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We propose that the flux-rope $Ω$ loop that emerges to become any bipolar magnetic region (BMR) is made by a convection cell of the $Ω$-loop's size from initially-horizontal magnetic field ingested through the cell's bottom. This idea is based on (1) observed characteristics of BMRs of all spans ($\sim$ 1000 km to $\sim$ 200,000 km), (2) a well-known simulation of the production of a BMR by a supergranule-size convection cell from horizontal field placed at cell bottom, and (3) a well-known convection-zone simulation. From the observations and simulations, we (1) infer that the strength of the field ingested by the biggest convection cells (giant cells) to make the biggest BMR $Ω$ loops is $\sim$ 10$^3$ G, (2) plausibly explain why the span and flux of the biggest observed BMRs are $\sim$ 200,000 km and $\sim$ 10$^{22}$ Mx, (3) suggest how giant cells might also make "failed-BMR" $Ω$ loops that populate the upper convection zone with horizontal field, from which smaller convection cells make BMR $Ω$ loops of their size, (4) suggest why sunspots observed in a sunspot cycle's declining phase tend to violate the hemispheric helicity rule, and (5) support a previously-proposed amended Babcock scenario for the sunspot cycle's dynamo process. Because the proposed convection-based heuristic model for making a sunspot-BMR $Ω$ loop avoids having $\sim$ 10$^5$ G field in the initial flux rope at the bottom of the convection zone, it is an appealing alternative to the present magnetic-buoyancy-based standard scenario and warrants testing by high-enough-resolution giant-cell magnetoconvection simulations.
description: 15 pages, 3 figures, accepted for publication in ApJ Letters
Learning features from georeferenced seafloor imagery with location guided autoencoders.
Creators: name: Yamada, Takaki
name: Prugel-Bennett, Adam
name: Thornton, Blair
Publisher: name: UNESCO/IOC
Year: 2020
Subjects: subject: Autoencoder
subject: Computer vision
subject: Underwater robotics
subject: Unsupervised learning
subject: Mapping
subject: Parameter Discipline::Marine geology
subject: Data Management Practices::Data interoperability development

description: Although modern machine learning has the potential to greatly speed up the interpretation of imagery, the varied nature of the seabed and limited availability of expert annotations form barriers to its widespread use in seafloor mapping applications. This motivates research into unsupervised methods that function without large databases of human annotations. This paper develops an unsupervised feature learning method for georeferenced seafloor visual imagery that considers patterns both within the footprint of a single image frame and broader scale spatial characteristics. Features within images are learnt using an autoencoder developed based on the AlexNet deep convolutional neural network. Features larger than each image frame are learnt using a novel loss function that regularises autoencoder training using the Kullback–Leibler divergence function to loosely assume that images captured within a close distance of each other look more similar than those that are far away. The method is used to semantically interpret images taken by an autonomous underwater vehicle at the Southern Hydrates Ridge, an active gas hydrate field and site of a seafloor cabled observatory at a depth of 780 m. The method's performance when applied to clustering and content‐based image retrieval is assessed against a ground truth consisting of more than 18,000 human annotations. The study shows that the location based loss function increases the rate of information retrieval by a factor of two for seafloor mapping applications. The effects of physics‐based colour correction and image rescaling are also investigated, showing that the improved consistency of spatial information achieved by rescaling is beneficial for recognising artificial objects such as cables and infrastructures, but is less effective for natural objects that have greater dimensional variability.
The Dependence of Galaxy Colors on Luminosity and Environment at z~0.4
Creators: name: Yee, H. K. C.
name: Hsieh, B. C.
name: Lin, Huan
name: Gladders, M. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse the B-R_c colors of galaxies as functions of luminosity and local galaxy density using a large photometric redshift catalog based on the Red-Sequence Cluster Survey. We select two samples of galaxies with a magnitude limit of M_Rc
description: accepted, ApJL vol. 269, in press
Deliverable 4.1 ARETE Use Scenarios
Creators: name: ARETE
Publisher: name: Zenodo
Year: 2021

description: D4.1 is the first deliverable of WP4 – User-centred Interactive Design. It consists of an introduction (Section 1) and a conclusion (Section 4), which sandwich two major sections reporting on the work that WP4 has conducted in the period of Month 1 to 14. Section 2 presents the empirical tasks of WP4, utilizing a range of established Human-centred Design (HcD) concepts and methods, which are briefly described in Section 2.1. In Section 2.2, 2.3 and 2.4, we describe the processes and outcomes of co-designing digital artefacts of Pilot 1, 2, and 3, respectively. Specifically, given the lack of access to end-users, the HCI team have assumed the role of proxy users and applied usability heuristics to evaluate the interaction design of mock-ups and prototypes, thereby providing feedback and improvement suggestions. Section 3 presents the analytical tasks undertaken in WP4, namely a systematic literature review (SLR) on research studies pertaining to AR educational tools (ARETs) with a focus set on usability and user experience (UX) (Section 3.1). The range of publication year is 2000- 2020. With the search string comprising the key terms - augmented reality, education, learning, design, evaluation and school – 714 records have been returned by the four databases (Section 3.2). After a series of screening/filtering steps, the final batch of 48 articles have been analysed and synthesized (Section 3.3 – 3.5). Examples of intriguing findings include (Section 3.5 - 3.6): (i) the application domains of the ARETs reviewed were largely STEM; (ii) only one study involved parents at home, who were untrained to provide support, resulting in frustration in all parties involved; (iii) the majority of the studies deployed markers despite the increasing sophistication of the markerless technology, which remains costly; (iv) the collaborative learning mode for the ARETs was predominant, but the empirical evidence of its effects as compared to the individual mode was lacking; (v) the number of attempts on applying AR to support children with special needs to learn remained disappointingly low. Implications of these and other insights for ARETE use scenarios have been drawn (Section 3.7). Overall, despite the negative impacts of the pandemic, thanks to the ongoing close collaborations among the partners, WP4 achieved its main goal in the first project year, albeit regrettably not to its full extent.
description: This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 856533.
The Gothic Bildungsroman
Creators: name: Morin, Christina
Publisher: name: University of Limerick
Year: 2025
Subjects: classificationCode: 47
subject: Language, communication and culture

description: In one of several inset tales in the anonymously-published Amasina, or the American Foundling (1804), Theophilus Mountfort, the eldest son of a landed family with an estate outside Tuam, Co. Galway, is urged by his cousin and fiancée, Adelaide Ashenhurst, to study “the laws and constitution of your country, that, when elected one of the representatives, you may act according to the real interest of the sacred trust devolved to you.” 1 The fruits of his efforts are never described, as his story – recounted in an old manuscript given to the heroine of the narrative proper and dated 21 July 1767 – becomes dominated by the machinations of his avaricious father. Disapproving of his son’s proposed marriage to Adelaide, Henry Mountfort convinces the latter that Theophilus has been unfaithful, reducing the girl to “lunatic wanderings” (Amasina, 2: 160).
A new gap phenomenon for proper holomorphic mappings from B^n into B^N
Creators: name: Huang, Xiaojun
name: Ji, Shanyu
name: Xu, Dekang
Publisher: name: arXiv
Year: 2006
Subjects: subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 32H

description: In this paper (Math. Res. Lett. 13 (2006). No 4, 509-523), the authors established a pseudo-normal form for proper holomoprhic mappings between balls in complex spaces with degenerate rank. This then was used to give a complete characterization for all proper holomorphic maps with geometric rank one, which, in particular, includes the following as an immediate application: Theorem: Any rational holomorphic map from B^n into B^N with $4\le n\le N\le 3n-4$ is equivalent to the D'Angelo map $$F_θ(z',w)=(z',(\cosθ)w,(\sinθ)z_1w, ..., (\sinθ)z_{n-1}w, (\sinθ)w^2, 0'), 0\le θ\leq π/2.$$ It is a well-known (but also quite trivial) fact that any non-constant rational CR map from a piece of the sphere $\partial {B^n}$ into the sphere $\partial {B^N}$ can be extended as a proper rational holomoprhic map from $B^n$ into $B^N$ ($N\ge n\ge 2$). By using the rationality theorem that the authors established in [HJX05], one sees that the the above theorem (and also the main theorem of the paper) holds in the same way for any non-constant $C^3$-smooth CR map from a piece of $\partial {B^n}$ into $\partial{B^N}$. The paper [Math. Res. Lett. 13 (2006). No 4, 509-523] was first electronically published by Mathematical Research Letters several months ago at its home website: http://www.mrlonline.org/mrl/0000-000-00/Huang-Ji-Xu2.pdf. (The pdf file of the printed journal version can also be downloaded at http://www.math.uh.edu/~shanyuji/rank1.pdf).
description: published
The Y dwarf population with HST: unlocking the secrets of our coolest neighbours -- I. Overview & First astrometric results
Creators: name: Fontanive, Clemence
name: Bedin, Luigi R.
name: Gagliuffi, Daniella C. Bardalez
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In this paper we present our project that aims at determining accurate distances and proper motions for the Y brown dwarf population using the Hubble Space Telescope. We validate the program with our first results, using a single new epoch of observations of the Y0pec dwarf WISE J163940.83$-$684738.6. These new data allowed us to refine its proper motion and improve the accuracy of its parallax by a factor of three compared to previous determinations, now constrained to $\varpi = 211.11 \pm 0.56$ mas. This newly derived absolute parallax corresponds to a distance of $4.737 \pm 0.013$ pc, an exquisite and unprecedented precision for faint ultracool Y dwarfs.
description: Accepted for publication in MNRAS. 6 pages, 2 figures, 2 tables
Rough translation of file 006_A (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-071119-06: Rough translation (minute-by-minute) of 006_A-3 (tape 6, side A, segment 3) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from 27:58 to the end of the file. Due to re-numbering, segment 006_A-3 has been assigned to the CLA item number LA256.006, audio file LA256.006A.
JISMONIY TARBIYA SPORT TASHKILOTLARIDA BOSHQARUV FAOLIYATINING MAQSAD VA VAZIFALARI
Creators: name: Safarov, O'lmasbek
Publisher: name: Zenodo
Year: 2024

description: Spor menejmenti – bu kompaniya yoki sport tashkilotini boshqarishga imkon beradigan tadbirlar to‘plami. Bularga moliyaviy boshqaruv, xodimlar, jihozlar va sport inshootlari kiradi. Sport menejmentining asosiy maqsadi sportchilar va tomoshabinlarga ko‘rsatiladigan xizmatlar sifatini ta’minlash bilan birga sport faoliyatining barqarorligini ta’minlashdir.
Programming an interpreter using molecular dynamics
Creators: name: Bergstra, J. A.
name: Middelburg, C. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences
subject: D.1.4; D.3.1; D.3.4; F.1.1; F.3.2

description: PGA (ProGram Algebra) is an algebra of programs which concerns programs in their simplest form: sequences of instructions. Molecular dynamics is a simple model of computation developed in the setting of PGA, which bears on the use of dynamic data structures in programming. We consider the programming of an interpreter for a program notation that is close to existing assembly languages using PGA with the primitives of molecular dynamics as basic instructions. It happens that, although primarily meant for explaining programming language features relating to the use of dynamic data structures, the collection of primitives of molecular dynamics in itself is suited to our programming wants.
description: 27 pages
Discrimination of symmetric states in operational probabilistic theory
Creators: name: Nakahira, Kenji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A state discrimination problem in an operational probabilistic theory (OPT) is investigated in diagrammatic terms. It is well-known that, in the case of quantum theory, if a state set has a certain symmetry, then there exists a minimum-error measurement having the same type of symmetry. However, to our knowledge, it is not yet clear whether this property also holds in a more general OPT. We show that it also holds in OPTs, i.e., for a symmetric state set, there exists a minimum-error measurement that has the same type of symmetry. It is also shown that this result can be utilized to optimize over a restricted class of measurements, such as sequential or separable measurements.
European Union project to boost legume crops launched
Creators: name: Klaiss, Matthias
name: Willer, Helga
Publisher: name: Zenodo
Year: 2018
Subjects: legumes

description: FiBL made a press release to introduce their involvement in the Legumes Translated project. More than thirty science and business leaders met in Vienna this week to launch Legumes Translated, a new thematic network funded under Horizon 2020, the European Union ́s research and innovation programme. Globally, legume crops such as pea, field bean and soybean are essential to our plant protein supplies. Even though these crops bring many advantages for farming systems, they are under-utilised on European farms. This causes unbalanced farming systems in Europe and a European deficit in protein with global consequences. FiBL is a partner in the project.
Effelsberg HI observations of compact high-velocity clouds
Creators: name: Westmeier, T.
name: Bruens, C.
name: Kerp, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have mapped 11 compact high-velocity clouds (CHVCs) in the 21-cm line emission of neutral, atomic hydrogen, using the Effelsberg 100-m radio telescope. The aim of our observations was to study the overall distribution of the warm neutral medium of CHVCs with high sensitivity. The achieved baseline rms of about 50 mK at the original 2.6 km/s velocity resolution allows us to search for evidence of ram-pressure interaction with the ambient medium. In addition, we have obtained spectra along an appropriate axis across each CHVC with longer integration times and denser angular sampling. These deep slices with a spectral baseline rms of about 25...35 mK allow us to determine the column density profile in greater detail as well as the velocity and line width gradient across each cloud. The most outstanding result of our observations is the complexity of the HI column density distribution and the line profiles of the investigated CHVCs. We have found only one cloud with a spherically-symmetric appearance. Among the remaining clouds we observe head-tail structures, bow-shock shapes, and objects with irregular shapes. These complex morphologies in combination with the obtained physical parameters suggest that ram-pressure interactions with an ambient medium may play a significant role in shaping some of the CHVCs from our sample. These results are consistent with a circumgalactic distribution of CHVCs with typical distances of the order of 100 kpc. The pressure of the ambient medium might also stabilise CHVCs in addition to their own gravitational potential.
description: 18 pages, 11 figures, accepted for publication by Astronomy & Astrophysics
Kinematical signs of dust trapping and feedback in a local pressure bump in the protoplanetary disk around HD 142527 revealed with ALMA
Creators: name: Yen, Hsi-Wei
name: Gu, Pin-Gao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyzed the archival data of the continuum emission at six wavelengths from 3 to 0.4 mm and 13CO and C18O (1-0, 2-1, and 3-2) lines in the protoplanetary disk around HD 142527 obtained with the Atacama Large Millimeter/submillimeter Array. We performed fitting to the spectral energy distributions obtained at the six wavelengths with the gray-body slab models to estimate the distributions of the dust surface density and spectral index of dust absorption coefficient beta. We also estimated the distribution of the gas column density by fitting the C18O spectra and measured the disk rotation by fitting the Keplerian disk models to the C18O data. We found super- and sub-Keplerian rotation inside and outside the dust ring in the northwest in the HD 142527 disk, suggestive of the presence of a local pressure bump. In comparison with our estimated dust and gas distributions, the location of the pressure bump is coincident with the region showing a three times higher dust density and a three times lower gas-to-dust mass ratio than the mean values in the disk, suggesting dust trapping in the pressure bump. Nevertheless, there is no correlation between our derived beta distribution and the location of the pressure bump. In addition, we found that the width of the dust ring is comparable or larger than the width of the pressure bump, which could suggest that dust feedback is significant in the pressure bump.
description: 19 pages, 12 figures, Accepted by ApJ
The Impact of New d(p,γ)He3 Rates on Big Bang Nucleosynthesis
Creators: name: Yeh, Tsung-Han
name: Olive, Keith A.
name: Fields, Brian D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We consider the effect on Big Bang Nucleosynthesis (BBN) of new measurements of the $d(p,γ){}^3$He cross section by the LUNA Collaboration. These have an important effect on the primordial abundance of D/H which is also sensitive to the baryon density at the time of BBN. We have re-evaluated the thermal rate for this reaction, using a world average of cross section data, which we describe with model-independent polynomials; our results are in good agreement with a similar analysis by LUNA. We then perform a full likelihood analysis combining BBN and Planck cosmic microwave background (CMB) likelihood chains using the new rate combined with previous measurements and compare with the results using previous rates. Concordance between BBN and CMB measurements of the anisotropy spectrum using the old rates was excellent. The predicted deuterium abundance at the Planck value of the baryon density was $({\rm D/H})_{\rm BBN+CMB}^{\rm old} = (2.57 \pm 0.13) \times 10^{-5}$ which can be compared with the value determined from quasar absorption systems $({\rm D/H})_{\rm obs} = (2.55 \pm 0.03) \times 10^{-5} $. Using the new rates we find $({\rm D/H})_{\rm BBN+CMB} = (2.51 \pm 0.11) \times 10^{-5}$. We thus find consistency among BBN theory, deuterium and ${}^4$He observations, and the CMB, when using reaction rates fit in our data-driven approach. We also find that the new reaction data tightens the constraints on the number of relativistic degrees of freedom during BBN, giving the effective number of light neutrino species $N_ν= 2.880 \pm 0.144$ in good agreement with the Standard Model of particle physics. Finally, we note that the observed deuterium abundance continues to be more precise than the BBN+CMB prediction, whose error budget is now dominated by $d(d,n){}^3$He and $d(d,p){}^{3}{\rm H}$.
description: 28 pages, 12 figures. Comments welcome
Digital color codes of stars
Creators: name: Harre, Jan-Vincent
name: Heller, René
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Publications in astrophysics are nowadays mainly published and read in digitized formats. Astrophysical publications in both research and in popular outreach often use colorful representations of stars to indicate various stellar types, that is, different spectral types or effective temperatures. Computer generated and computer displayed imagery has become an integral part of stellar astrophysics communication. There is, however, no astrophysically motivated standard color palette for illustrative representations of stars and some stars are actually represented in misleading colors. We use pre-computed PHOENIX and TLUSTY stellar model spectra and convolve them with the three standard color matching functions for human color perception between 360$\,$nm and 830$\,$nm. The color matching functions represent the three sets of receptors in the eye that respond to red, green, and blue light. For a grid of main sequence stars with effective temperatures between 2300$\,$K and 55,000$\,$K of different metallicities we present the red-blue-green and hexadecimal color codes that can be used for digitized color representations of stars as if seen from space. We find significant deviations between the color codes of stars computed from stellar spectra and from a black body radiator of the same effective temperature. We illustrate the main sequence in the color wheel and demonstrate that there are no yellow, green, cyan, or purple stars. Red dwarf stars (spectral types M0V - M9V) actually look orange to the human eye. Old white dwarfs such as WD$\,$1856$+$534, host to a newly discovered transiting giant planet candidate, occur pale orange to the human eye, not white. Our freely available software can be used to generate color codes for any input spectrum such as those from planets, galaxies, quasars etc.
description: 13 pages, 5 figures, published in Astronomische Nachrichten / Astronomical Notes
Transcription of the retelling of Reel #6 (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-071119-05: Transcription of Verdena's description of Reel #6 from the LA 256 collection immediately after watching it, file VP-190317-11, from the beginning of the file to 2:15. Due to re-numbering, Reel #6 has been assigned the CLA item number LA256.045.
QCD at high energy: saturation and fluctuation effects
Creators: name: Soyez, Gregory
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In these proceedings, I shall review the basic concepts of perturbative QCD in its high-energy limit. I shall concentrate on the approach to the unitarity limit, usually referred to as saturation, as well as on the gluon-number fluctuations the importance of which has recently been discovered. I shall explain the basic framework showing the need for those phenomena, first, from a simple picture of the high-energy behaviour, then, giving a short derivation of the equation driving this evolution. In the second part, I shall exhibit an analogy with statistical physics and show how this allows to derive geometric scaling in QCD with saturation. I shall finally consider the effects of gluon-number fluctuations on this picture and draw the physical consequences, i.e. a new scaling law, arising from those results.
description: 22 pages, 16 figures, invited lectures at the Cracow School of Theoretical Physics, Zakopane, June 2006
The Abundances of Light Neutron-Capture Elements in Planetary Nebulae
Creators: name: Sterling, N. C.
name: Dinerstein, Harriet L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present preliminary results from a large-scale survey of the neutron(n)-capture elements Se and Kr in Galactic planetary nebulae (PNe). These elements may be produced in PN progenitors by s-process nucleosynthesis, and brought to the stellar envelope by third dredge-up (TDU). We have searched for [Kr III] 2.199 and [Se IV] 2.287 $μ$m in 120 PNe, and detected one or both lines in 79 objects, for a detection rate of 66%. In order to determine abundances of Se and Kr, we have added these elements to the atomic database of the photoionization code CLOUDY, and constructed a large grid of models to derive corrections for unobserved ionization stages. Se and Kr are enriched in 73% of the PNe in which they have been detected, and exhibit a wide range of abundances, from roughly solar to enriched by a factor of 10 or more. These enrichments are interpreted as evidence for the operation of the s-process and TDU in the progenitor stars. In line with theoretical expectations, Kr is more strongly enhanced than Se, and the abundances of both elements are correlated with the carbon abundance. Kr and Se are strongly enhanced in Type I PNe, which may be evidence for the operation of the $^{22}$Ne neutron source in intermediate-mass AGB stars. These results constitute the first broad characterization of s-process enrichments in PNe as a population, and reveal the impact of low- and intermediate-mass stars on the chemical evolution of trans-iron elements in the Galaxy.
description: 4 pages, 1 figure, to appear in IAU Symp. 234, "Planetary Nebulae in our Galaxy and Beyond", eds. M. J. Barlow and R. H. Mendez
The standpoint of justice and conflicting liberties : John Rawls’s conception of freedom
Creators: name: Dalibor, Marek
Publisher: name: University of British Columbia
Year: 2009

description: In A Theory of Justice, John Rawls attempts to develop an alternative conception of justice to that provided by utilitarian theories. His critique of the latter consists mainly in the conflation of individuals into one which needs to take place in order to extend the concept of individual satisfaction of desires (utility) to a social concept. Rawls instead postulates the "inviolability of the person" against being considered merely a part of a greater whole and potentially being sacrificed for the benefit of others. From this "inviolability of the person', Rawls constructs his "Original Position", which I interpret as the "Standpoint of Justice", the position which specifies what kinds of arguments are acceptable as justifications for particular principles of justice. Most importantly, the inviolability of the person is expressed through the absence of knowledge of one's particular conception of the 'good' in the Original Position. Conceptions of the good are understood to belong to the domain of the individual, and no such conception can serve as a universally shared basis of justification. "Freedom", in this respect, consists in the right not to have another's conception of the good imposed on oneself. This is "freedom as an end". However, in order to deduce specific principles of justice from the Original Position, Rawls needs to introduce assumptions about what ends the parties there are following. He thus introduces the notion of "rational plans of life" and of "primary social goods" which serve as means to the realization of plans of life, whatever these may in particular be. Freedom, here, consists of a list of "basic liberties", which are part of the set of "primary social goods". Rawls thus introduces the notion of "freedom as a means". This gives rise to a conflict between the two aspects of freedom which Rawls is unable to solve.
On scattering for NLS: from Euclidean to hyperbolic space
Creators: name: Banica, Valeria
name: Carles, Rémi
name: Duyckaerts, Thomas
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We prove asymptotic completeness in the energy space for the nonlinear Schrodinger equation posed on hyperbolic space in the radial case, in space dimension at least 4, and for any energy-subcritical, defocusing, power nonlinearity. The proof is based on simple Morawetz estimates and weighted Strichartz estimates. We investigate the same question on spaces which kind of interpolate between Euclidean space and hyperbolic space, showing that the family of short range nonlinearities becomes larger and larger as the space approaches the hyperbolic space. Finally, we describe the large time behavior of radial solutions to the free dynamics.
description: 13 pages. References updated; see Remark 1.1
Gromov-Witten invariants of P^2-stacks
Creators: name: Cadman, Charles
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14N35 (Primary) 14A20 (Secondary)

description: The Gromov-Witten theory of Deligne-Mumford stacks is a recent development, and hardly any computations have been done beyond 3-point genus 0 invariants. This paper provides explicit recursions which, together with some invariants computed by hand, determine all genus 0 invariants of the stack P^2_{D,2}. Here D is a smooth plane curve and P^2_{D,2} is locally isomorphic to the stack quotient [U/(Z/(2))], where U -> V \subset P^2 is a double cover branched along D \cap V. The introduction discusses an enumerative application of these invariants.
description: 20 pages, to appear in Compos. Math
Discrete soliton mobility in two-dimensional waveguide arrays with saturable nonlinearity
Creators: name: Vicencio, Rodrigo A.
name: Johansson, Magnus
Publisher: name: arXiv
Year: 2005
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We address the issue of mobility of localized modes in two-dimensional nonlinear Schrödinger lattices with saturable nonlinearity. This describes e.g. discrete spatial solitons in a tight-binding approximation of two-dimensional optical waveguide arrays made from photorefractive crystals. We discuss numerically obtained exact stationary solutions and their stability, focussing on three different solution families with peaks at one, two, and four neighboring sites, respectively. When varying the power, there is a repeated exchange of stability between these three solutions, with symmetry-broken families of connecting intermediate stationary solutions appearing at the bifurcation points. When the nonlinearity parameter is not too large, we observe good mobility, and a well defined Peierls-Nabarro barrier measuring the minimum energy necessary for rendering a stable stationary solution mobile.
description: 19 pages, 4 figures
Nonequilibrium Transport in Quantum Impurity Models (Bethe-Ansatz for open systems)
Creators: name: Mehta, Pankaj
name: Andrei, Natan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We develop an exact non-perturbative framework to compute steady-state properties of quantum-impurities subject to a finite bias. We show that the steady-state physics of these systems is captured by nonequilibrium scattering eigenstates which satisfy an appropriate Lippman-Schwinger equation. Introducing a generalization of the equilibrium Bethe-Ansatz - the Nonequilibrium Bethe-Ansatz (NEBA), we explicitly construct the scattering eigenstates for the Interacting Resonance Level model and derive exact, nonperturbative results for the steady-state properties of the system.
description: 4 pages, 1 figure
Isolated and dynamical horizons from a common perspective
Creators: name: Korzynski, Mikolaj
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A framework is developed in which one can write down the constraint equations on a three--dimensional hypersurface of arbitrary signature. It is then applied to isolated and dynamical horizons. The derived equations can be used to extract physicaly relevant quantities describing the horizon irrespective to whether it is isolated (null) or dynamical at a given instant of time. Furthermore, small perturbation of isolated horizons are considered, and finally a family of axially--symmetric exact solution of the constraint equations on a dynamical horizon is presented.
description: 12 pages, one figure, revtex4. v2: added various references in introduction and sec. 2, short discussion of applicability to slowly evolving horizons in sec. 4B. Several minor corrections throughout text
Polarization transitions in interacting ring 1D arrays
Creators: name: Roostaei, Bahman
name: Mullen, Kieran
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Periodic nanostructures can display the dynamics of arrays of atoms while enabling the tuning of interactions in ways not normally possible in Nature. We examine one dimensional arrays of a ``synthetic atom,'' a one dimensional ring with a nearest neighbor Coulomb interaction. We consider the classical limit first, finding that the singly charged rings possess antiferroelectric order at low temperatures when the charge is discrete, but that they do not order when the charge is treated as a continuous classical fluid. In the quantum limit Monte Carlo simulation suggests that the system undergoes a quantum phase transition as the interaction strength is increased. This is supported by mapping the system to the 1D transverse field Ising model. Finally we examine the effect of magnetic fields. We find that a magnetic field can alter the electrostatic phase transition producing a ferroelectric groundstate, solely through its effect of shifting the eigenenergies of the quantum problem.
description: 12 pages in two column format, 18 figures
Autonomous Extraction of Millimeter-scale Deformation in InSAR Time Series Using Deep Learning
Creators: name: Rouet-Leduc, Bertrand
name: Jolivet, Romain
name: Dalaison, Manon
name: Johnson, Paul A.
name: Hulbert, Claudia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Systematic characterization of slip behaviours on active faults is key to unraveling the physics of tectonic faulting and the interplay between slow and fast earthquakes. Interferometric Synthetic Aperture Radar (InSAR), by enabling measurement of ground deformation at a global scale every few days, may hold the key to those interactions. However, atmospheric propagation delays often exceed ground deformation of interest despite state-of-the art processing, and thus InSAR analysis requires expert interpretation and a priori knowledge of fault systems, precluding global investigations of deformation dynamics. Here we show that a deep auto-encoder architecture tailored to untangle ground deformation from noise in InSAR time series autonomously extracts deformation signals, without prior knowledge of a fault's location or slip behaviour. Applied to InSAR data over the North Anatolian Fault, our method reaches 2 mm detection, revealing a slow earthquake twice as extensive as previously recognized. We further explore the generalization of our approach to inflation/deflation-induced deformation, applying the same methodology to the geothermal field of Coso, California.
Distributed Double Machine Learning with a Serverless Architecture
Creators: name: Kurz, Malte S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: This paper explores serverless cloud computing for double machine learning. Being based on repeated cross-fitting, double machine learning is particularly well suited to exploit the high level of parallelism achievable with serverless computing. It allows to get fast on-demand estimations without additional cloud maintenance effort. We provide a prototype Python implementation \texttt{DoubleML-Serverless} for the estimation of double machine learning models with the serverless computing platform AWS Lambda and demonstrate its utility with a case study analyzing estimation times and costs.
Elicitation of the "Picture Series for Positional Verbs"
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-071119-03: Elicitation of the "Picture Series for Positional Verbs," items #28 through #68, presented in order. Reference: Ameka, F. K., De Witte, C., & Wilkins, D. (1999). Picture series for positional verbs: Eliciting the verbal component in locative descriptions. In D. Wilkins (Ed.), Manual for the 1999 Field Season (pp. 48-54). Nijmegen: Max Planck Institute for Psycholinguistics. doi:10.17617/2.2573831.
Star-quantization of an infinite wall
Creators: name: Kryukov, Sergei
name: Walton, Mark A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In deformation quantization (a.k.a. the Wigner-Weyl-Moyal formulation of quantum mechanics), we consider a single quantum particle moving freely in one dimension, except for the presence of one infinite potential wall. Dias and Prata pointed out that, surprisingly, its stationary-state Wigner function does not obey the naive equation of motion, i.e. the naive stargenvalue (*-genvalue) equation. We review our recent work on this problem, that treats the infinite wall as the limit of a Liouville potential. Also included are some new results: (i) we show explicitly that the Wigner-Weyl transform of the usual density matrix is the physical solution, (ii) we prove that an effective-mass treatment of the problem is equivalent to the Liouville one, and (iii) we point out that self-adjointness of the operator Hamiltonian requires a boundary potential, but one different from that proposed by Dias and Prata.
description: 6 pages, 0 figures, submitted to Canadian Journal of Physics, special issue for the proceedings of Canada Theory 1 (6/05, UBC)