cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Lesson Plan on Subtitling - How It's Made (Tissues)
Creators: name: Tinedo-Rodríguez, Antonio Jesús
name: Sabaté Carrové, Mariona
Publisher: name: figshare
Year: 2023
Subjects: Translation and interpretation studies
English language

description: The document at hand is a specialized audiovisual translation lesson plan, primarily designed to develop the linguistic and translation competencies of students in the realm of scientific-technical audiovisual texts. Its aim is to equip students with the necessary skills and knowledge to undertake the complex task of audiovisual translation, which involves not only linguistic proficiency but also an in-depth understanding of the technical content and the intricacies of the audiovisual medium. The lesson plan employs a variety of pedagogical techniques and strategies to enhance students' translation skills. Ultimately, the document seeks to provide a comprehensive and practical framework for the development of the vital competencies required in the field of audiovisual translation.
Multiwavelength Observations of Pulsar Wind Nebulae
Creators: name: Slane, Patrick
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The extended nebulae formed as pulsar winds expand into their surroundings provide information about the composition of the winds, the injection history from the host pulsar, and the material into which the nebulae are expanding. Observations from across the electromagnetic spectrum provide constraints on the evolution of the nebulae, the density and composition of the surrounding ejecta, the geometry of the central engines, and the long-term fate of the energetic particles produced in these systems. Such observations reveal the presence of jets and wind termination shocks, time-varying compact emission structures, shocked supernova ejecta, and newly formed dust. Here I provide a broad overview of the structure of pulsar wind nebulae, with specific examples from observations extending from the radio band to very-high-energy gamma-rays that demonstrate our ability to constrain the history and ultimate fate of the energy released in the spin-down of young pulsars.
description: 20 pages, 11 figures. Invited review to appear in Proc. of the inaugural ICREA Workshop on "The High-Energy Emission from Pulsars and their Systems" (2010), eds. N. Rea and D. Torres, (Springer Astrophysics and Space Science series)
Program codes for "A second-order accurate structure-preserving scheme for the Cahn-Hilliard equation with a dynamic boundary condition"
Creators: name: Okumura, Makoto
name: Fukao, Takeshi
name: Furihata, Daisuke
name: Yoshikawa, Shuji
Publisher: name: Zenodo
Year: 2021

description: We provide three program codes for solving structure-preserving schemes in the article "A second-order accurate structure-preserving scheme for the Cahn-Hilliard equation with a dynamic boundary condition." "Our_proposed_scheme.ipynb" is an algorithm for solving our proposed scheme for the Cahn-Hilliard equation with a dynamic boundary condition. "FYW_scheme.ipynb" is an algorithm for solving the previous scheme proposed by Fukao, Yoshikawa, and Wada (Fukao-Yoshikawa-Wada, 2017). "Neumann.ipynb" is an algorithm for solving the structure-preserving scheme for the Cahn-Hilliard equation with the Neumann boundary condition based on the discrete variational derivative method (Furihata-Matsuo, 2011). We note that the above three files are in jupyter notebook format. The computer language used is Julia (ver. 1.5.3). We use the package "NLsolve" in Julia to obtain the next time-step for the numerical solutions to the schemes.
An Updated Ultraviolet Calibration for the Swift/UVOT
Creators: name: Breeveld, A. A.
name: Landsman, W.
name: Holland, S. T.
name: Roming, P.
name: Kuin, N. P. M.
name: Page, M. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present an updated calibration of the Swift/UVOT broadband ultraviolet (uvw1, uvm2, and uvw2) filters. The new calibration accounts for the ~1% per year decline in the UVOT sensitivity observed in all filters, and makes use of additional calibration sources with a wider range of colours and with HST spectrophotometry. In this paper we present the new effective area curves and instrumental photometric zeropoints and compare with the previous calibration.
description: 4 pages, 3 figures, 2 tables. Presented at GRB 2010 symposium, Annapolis, November 2010 to be published in American Institute of Physics Conference Series
A taxonomic revision of the genera Antennaria and Symphyotrichum (Asteraceae) in British Columbia, Canada, with additional perspectives on the role of taxonomy within the biological sciences
Creators: name: Fenneman, James Daniel Arnold
Publisher: name: University of British Columbia
Year: 2019

description: Antennaria and Symphyotrichum represent two of the most taxonomically complex genera of the family Asteraceae in North America. Extensive hybridization and polyploidy contribute to many of the taxonomic difficulties encountered within both genera, and in Antennaria these are compounded by the presence of widespread apomixis. This suite of factors has contributed to considerable taxonomic uncertainty in these genera, particularly in the Pacific Northwest where they are both diverse and understudied. This study uses a traditional, specimen-based alpha-taxonomic methodology to investigate the taxonomy of these two genera within the western Canadian province of British Columbia. It uses both a detailed review of existing herbarium collections from within the region of interest, as well as a comprehensive review of existing taxonomic and floristic literature pertaining to these genera, to provide a taxonomic framework that is better representative of these genera in British Columbia. This study provides clarification on a number of unresolved taxonomic and floristic uncertainties, including the incorrect application of nomenclature, poorly defined species limits, incomplete or erroneous morphological circumscriptions, incorrect geographic distributions, and inadequate identification criteria. Several taxa that had not previously been recognized formally in the region, both native and exotic, are documented here and provided a full accounting of their occurrence. It also provides the first comprehensive summary of putative hybrids within these genera in the Pacific Northwest. Dichotomous keys for the identification of taxa within these genera in British Columbia were developed that capture new developments that have resulted from this study. Finally, the importance of taxonomy to the biological sciences is elucidated in the context of this study, and perspectives on the Taxonomic Impediment and the relationship between academia and taxonomy are detailed and discussed.
Creation of arbitrary spectra with an electro-optic modulator
Creators: name: Rogers, C. E.
name: Carini, J. L.
name: Pechkis, J. A.
name: Gould, P. L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We use a waveguide-based electro-optic phase modulator, driven by a nanosecond-timescale arbitrary waveform generator, to produce an optical spectrum with an arbitrary pattern of sidebands. A programmed sequence of linear voltage ramps, with various slopes, is applied to the modulator. The resulting phase ramps give rise to sidebands whose frequency offsets relative to the carrier are equal to the slopes of the corresponding linear phase ramps. This extension of the serrodyne technique provides multi-line spectra with sideband spacings in the 100 MHz range.
description: 3 pages, 4 figures
Simultaneous measurement of circular dichroism and Faraday rotation at terahertz frequencies using heterodyne detection
Creators: name: Jenkins, G. S.
name: Schmadel, D. C.
name: Drew, H. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A far-infrared system measures the full complex Faraday angle, rotation as well as ellipticity, with an unprecedented accuracy of 10\,$μ$rad/T. The system operates on several far-infrared laser lines in the spectral range from 0.3 to 6 THz and produces results as a continuous function of temperature from 10 to 310K and applied fields between $\pm$ 8\,T. Materials successfully measured include GaAs 2-DEG heterostructures, various high temperature superconductors including Bi$_2$Sr$_2$CaCu$_2$O$_{8+x}$, Pr$_{2 - x}$Ce$_{x}$CuO$_4$, and La$_{2-x}$Sr$_x$CuO$_4$, and single crystals of the topological insulator Bi$_2$Se$_3$.
description: Submitted to Review of Scientific Instruments (RSI)
A selection of hot subluminous stars in the GALEX survey I. Correlation with the Guide Star Catalog
Creators: name: Vennes, S.
name: Kawka, A.
name: Nemeth, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We assembled a catalogue of bright, hot subdwarf and white dwarf stars extracted from a joint ultraviolet, optical, and infrared source list. The selection is secured using colour criteria that correlate well with effective temperatures T_eff ~> 12,000 K. We built a N_UV-V versus V-J diagram for more than 60,000 bright sources using the Galaxy Evolution Explorer (GALEX) N_UV magnitude (N_UV<14), and the associated Guide Star Catalog (GSC2.3.2) photographic quick-V magnitude and the Two Micron All Sky Survey (2MASS) J and H magnitudes. This distillation process delivered a catalogue of approximately 700 sources with N_UV-V<0.5 comprising ~160 known hot subdwarf stars and another ~60 known white dwarf stars. A reduced proper-motion diagram built using the proper-motion measurements extracted from the Naval Observatory Merged Astrometric Dataset allowed us to identify an additional ~120 new hot subdwarf candidates and ~10 hot white dwarf candidates. We present a spectroscopic study of a subset of 52 subdwarfs, 48 of them analysed here for the first time, and with nine objects brighter than V ~ 12. Our sample of spectroscopically confirmed hot subdwarfs comprises ten sdO stars and 42 sdB stars suitable for pulsation and binary studies. We also present a study of 50 known white dwarfs selected in the GALEX survey and six new white dwarfs from our catalogue of subluminous candidates. Ultraviolet, optical, and infrared synthetic magnitudes employed in the selection and analysis of white dwarf stars are listed in appendix.
description: Accepted for publication in MNRAS. In the revised version we fixed an error and added some clarifications
Quantum simulation of a triatomic chemical reaction with ultracold atoms on a waveguide
Creators: name: Torrontegui, E.
name: Ruschhaupt, A.
name: Guéry-Odelin, D.
name: Muga, J. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the scaling and coordinate transformation to physically simulate quantum three-body collinear chemical reactions of the type A+BC $\rightarrow$ AB+C by the motion of single ultracold atoms or a weakly interacting Bose-Einstein condensate on an $L$-shaped waveguide. As an example we show that the parameters to model the reaction F+HH $\to$ H+HF with lithium are at reach with current technology. This mapping provides also an inverse scattering tool to find an unknown potential, and a way to transfer the knowledge on molecular reaction dynamics to design beam splitters for cold atoms with control of the channel outcome and vibrational excitation.
title: ÐÐ»Ð³Ð¾ÑÐ¸ÑÐ¼Ñ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð² ÑÐ¸ÑÑÐµÐ¼Ðµ Ð¿ÐµÑÐµÐ´Ð°ÑÐ¸ Ð´Ð°Ð½Ð½ÑÑ LoRa
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Signal processing algorithms in the LoRa data transmission system
Creators: name: ÐÐ°ÑÑÑÐºÐ¾Ð², ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: ÑÐ¸ÑÐ¿
Ð»Ð¸Ð½ÐµÐ¹Ð½Ð°Ñ ÑÐ°ÑÑÐ¾ÑÐ½Ð°Ñ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ñ
Ð¿Ð¾Ð»Ð¾ÑÐ° Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ð¸
ÐºÐ¾ÑÑÑÐ¸ÑÐ¸ÐµÐ½Ñ ÑÐ°ÑÑÐ¸ÑÐµÐ½Ð¸Ñ
LPWAN
LoRa
CSS
chirp
linear frequency modulation
bandwidth
spreading factor

description: Ð Ð°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ LPWAN ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¿ÐµÑÐµÐ´Ð°ÑÐ¸ Ð´Ð°Ð½Ð½ÑÑ LoRa, Ð² ÑÐ°ÑÑÐ½Ð¾ÑÑÐ¸, Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð² ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ. ÐÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ð¸ LoRa Ð¸ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð° LoRa Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¿ÑÐ¾Ð²ÐµÐ´ÑÐ½Ð½Ð¾Ð³Ð¾ Ð°Ð½Ð°Ð»Ð¸Ð·Ð°. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð², Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÑÑÐ¸Ð¹ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑ Ð´ÐµÐ¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ñ Ð±ÐµÐ· Ð¿ÑÐµÐ´Ð²Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ Ð¾Ð±Ð½Ð°ÑÑÐ¶ÐµÐ½Ð¸Ñ. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÑÑ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð² Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² LoRa, Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ð¸ ÐºÐ¾ÑÐ¾ÑÐ¾Ð³Ð¾ Ð±ÑÐ»Ð¸ ÑÐ´ÐµÐ»Ð°Ð½Ñ Ð²ÑÐ²Ð¾Ð´Ñ Ð¾ Ð¿ÑÐµÐ´Ð¿Ð¾ÑÑÐ¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð². ÐÑÐ½Ð¾Ð²Ð½ÑÐ¼Ð¸ ÐºÑÐ¸ÑÐµÑÐ¸ÑÐ¼Ð¸ Ð¾ÑÐµÐ½Ð¸Ð²Ð°Ð½Ð¸Ñ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð² ÑÐ²Ð»ÑÑÑÑÑ Ð²ÐµÑÐ¾ÑÑÐ½Ð¾ÑÑÑ Ð¾ÑÐ¸Ð±ÐºÐ¸ Ð½Ð° ÑÐ¸Ð¼Ð²Ð¾Ð» Ð¸ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²Ð¾ Ð²ÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½ÑÑ Ð·Ð°ÑÑÐ°Ñ.
description: The work is devoted to the study of LPWAN LoRa data transfer technology, in particular, to the study of the algorithms for generating and processing signals of this system. An analysis of LoRa modulation and the creation of a LoRa signal model based on the analysis are carried out. A signal processing algorithm has been developed that allows demodulation without prior detection. Three LoRa signal processing algorithms were simulated, on the basis of which conclusions were drawn about the preference for using algorithms. The main criteria for evaluating the algorithms are the probability of error per symbol and the amount of computational cost.
Explicit bounds for sums of squares
Creators: name: Rouse, Jeremy
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11E25, 11F30

description: For an even integer $k$, let $r_{2k}(n)$ be the number of representations of $n$ as a sum of $2k$ squares. The quantity $r_{2k}(n)$ is appoximated by the classical singular series $ρ_{2k}(n) \asymp n^{k-1}$. Deligne's bound on the Fourier coefficients of Hecke eigenforms gives that $r_{2k}(n) = ρ_{2k}(n) + O(d(n) n^{\frac{k-1}{2}})$. We determine the optimal implied constant in this estimate provided that either $k/2$ or $n$ is odd. The proof requires a delicate positivity argument involving Petersson inner products.
description: 21 pages
MARVELS-1b: A Short-Period, Brown Dwarf Desert Candidate from the SDSS-III MARVELS Planet Search
Creators: name: Lee, Brian L.
name: Ge, Jian
name: Fleming, Scott W.
name: Stassun, Keivan G.
name: Gaudi, B. Scott
name: Barnes, Rory
name: Mahadevan, Suvrath
name: Eastman, Jason D.
name: Wright, Jason
name: Siverd, Robert J.
name: Gary, Bruce
name: Ghezzi, Luan
name: Laws, Chris
name: Wisniewski, John P.
name: de Mello, G. F. Porto
name: Ogando, Ricardo L. C.
name: Maia, Marcio A. G.
name: da Costa, Luiz Nicolaci
name: Sivarani, Thirupathi
name: Pepper, Joshua
name: Nguyen, Duy Cuong
name: Hebb, Leslie
name: De Lee, Nathan
name: Wang, Ji
name: Wan, Xiaoke
name: Zhao, Bo
name: Chang, Liang
name: Groot, John
name: Varosi, Frank
name: Hearty, Fred
name: Hanna, Kevin
name: van Eyken, J. C.
name: Kane, Stephen R.
name: Agol, Eric
name: Bizyaev, Dmitry
name: Bochanski, John J.
name: Brewington, Howard
name: Chen, Zhiping
name: Costello, Erin
name: Dou, Liming
name: Eisenstein, Daniel J.
name: Fletcher, Adam
name: Ford, Eric B.
name: Guo, Pengcheng
name: Holtzman, Jon A.
name: Jiang, Peng
name: Leger, R. French
name: Liu, Jian
name: Long, Daniel C.
name: Malanushenko, Elena
name: Malanushenko, Viktor
name: Malik, Mohit
name: Oravetz, Daniel
name: Pan, Kaike
name: Rohan, Pais
name: Schneider, Donald P.
name: Shelden, Alaina
name: Snedden, Stephanie A.
name: Simmons, Audrey
name: Weaver, B. A.
name: Weinberg, David H.
name: Xie, Ji-Wei
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present a new short-period brown dwarf candidate around the star TYC 1240-00945-1. This candidate was discovered in the first year of the Multi-object APO Radial Velocity Exoplanets Large-area Survey (MARVELS), which is part of the third phase of the Sloan Digital Sky Survey (SDSS-III), and we designate the brown dwarf as MARVELS-1b. MARVELS uses the technique of dispersed fixed-delay interferometery to simultaneously obtain radial velocity measurements for 60 objects per field using a single, custom-built instrument that is fiber fed from the SDSS 2.5-m telescope. From our 20 radial velocity measurements spread over a ~370 d time baseline, we derive a Keplerian orbital fit with semi-amplitude K=2.533+/-0.025 km/s, period P=5.8953+/-0.0004 d, and eccentricity consistent with circular. Independent follow-up radial velocity data confirm the orbit. Adopting a mass of 1.37+/-0.11 M_Sun for the slightly evolved F9 host star, we infer that the companion has a minimum mass of 28.0+/-1.5 M_Jup, a semimajor axis 0.071+/-0.002 AU assuming an edge-on orbit, and is probably tidally synchronized. We find no evidence for coherent instrinsic variability of the host star at the period of the companion at levels greater than a few millimagnitudes. The companion has an a priori transit probability of ~14%. Although we find no evidence for transits, we cannot definitively rule them out for companion radii ~<1 R_Jup.
description: 47 pages, 11 figures. Accepted for publication in ApJ
A Deep Chandra Observation of the X-shaped Radio Galaxy 4C +00.58: A Candidate for Merger-induced Reorientation?
Creators: name: Hodges-Kluck, Edmund J.
name: Reynolds, Christopher S.
name: Miller, M. Coleman
name: Cheung, Chi C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Although rapid reorientation of a black hole spin axis (lasting less than a few Myr) has been suggested as a mechanism for the formation of wings in X-shaped radio galaxies (XRGs), to date no convincing case of reorientation has been found in any XRG. Alternative wing formation models such as the hydrodynamic backflow models are supported by observed trends indicating that XRGs form preferentially with jets aligned along the major axis of the surrounding medium and wings along the minor axis. In this Letter, we present a deep Chandra observation of 4C +00.58, an oddball XRG with its jet oriented along the minor axis. By using the X-ray data in tandem with available radio and optical data, we estimate relevant timescales with which to evaluate wing formation models. The hydrodynamic models have difficulty explaining the long wings, whereas the presence of X-ray cavities (suggesting jet activity along a prior axis) and a potential stellar shell (indicating a recent merger) favor a merger-induced reorientation model.
description: 14 pages, 4 figures, accepted by ApJL
Spin-transfer-torque resonant switching and injection locking in presence of a weak external microwave field for spin valves with perpendicular materials
Creators: name: Carpentieri, Mario
name: Finocchio, Giovanni
name: Azzerboni, Bruno
name: Torres, Luis
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The effects of a weak microwave field in the magnetization dynamics driven by spin-transfer-torque in spin-valves with perpendicular materials have been systematically studied by means of full micromagnetic simulations. In the system we studied, depending on the working point (bias field and current) in the dynamical stability diagram, we observe either resonant switching and injection locking. The resonant switching, observed in the switching region, occurs when the field frequency is approaching the frequency of the main pre-switching mode giving rise to an asymmetric power distribution of that mode in the sectional area of the free layer. At the resonant frequency, the switching time is weakly dependent on the relative phase between the instant when the current pulse is applied and the microwave field. The injection locking, observed in the dynamical region, is characterized by the following properties: (i) a locking bandwidth which is linearly dependent on the force locking, and (ii) a locking for integer harmonics of the self-oscillation frequency. We compare our numerical results with analytical theory for non-autonomous non-linear system obtaining a good agreement in the current region where the oscillation frequency and output power are characterized from a linear relationship.
THE USE OF BLOCKCHAIN TECHNOLOGY AND HOMEOSTATIC PRINCIPLES IN THE MONETARY POLICIES OF STATES
Creators: name: Dziatkovskii, A.D.
name: Hruneuski, V.A.
Publisher: name: Финансовые рынки и банки
Year: 2021
Subjects: APPLIED INFORMATION TECHNOLOGY
DISTRIBUTED LEDGER TECHNOLOGY
BLOCKCHAIN
FINANCIAL AND ECONOMIC SPHERE
MONETARY POLICY
HOMEOSTATICS

description: The article presents the main trends in the application of blockchain technology and the basic principles of homeostatics in the formation of monetary policy: theoretical approaches and a methodological basis for conducting the study are investigated. The tools used for the research include literature and statistics. Analyzed data allowed us to conclude that distributed ledgers leveraged by the means of blockchain represent a model ruled by the principles of homeostatics. They are characterized by a similar structure (four layers) and can increase the transparency of the financial market. Being supported by the laws of homeostatics, blockchain simplifies processes compared to centralized solutions and enables flexible settlement models. In the analytical part, we assumed that the implementation of blockchain-based digital currencies may have a serious short- and long-term impact on monetary systems and put the role of Central Banks under question.
title: Ð Ð°ÑÑÐµÑÐ½Ð¾Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ°Ð±Ð¾ÑÐµÐ³Ð¾ Ð¿ÑÐ¾ÑÐµÑÑÐ° Ð¸ ÑÐµÐ¿Ð»Ð¾Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð½Ð¾ÑÑÐ¸ Ð¿Ð¾ÑÑÐ½Ñ Ð³Ð°Ð·Ð¾Ð²Ð¾Ð³Ð¾ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Computational study of the working process and heat stress of a gas engine piston
Creators: name: Ð§Ñ Ð¯Ð½Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÐÐ¾ÑÑÐ½Ð¸ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»ÐµÐ¹ Ð²Ð½ÑÑÑÐµÐ½Ð½ÐµÐ³Ð¾ ÑÐ³Ð¾ÑÐ°Ð½Ð¸Ñ
ÑÐ°Ð±Ð¾ÑÐ¸Ð¹ Ð¿ÑÐ¾ÑÐµÑÑ
ÑÐµÐ¿Ð»Ð¾Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð½Ð¾Ðµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ðµ
workflow
heat stress

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description: The topic of the graduate qualification work is Â«Computational study of theworking process and heat stress of a gas engine pistonÂ». The work is focused on consideration of gas engines, their workflow and theoperation of the piston. Tasks solved in the course of the study is: 1. Analysis of gas engine. 2. Computational analysis of the workflow and search for optimal enginecharacteristics. 3. Modeling the operation of piston rings. 4. Calculation of convective heat exchange in the combustion chamber. 5. Calculation of the thermal and stressed state of the piston. Based on the results of the work, a conclusion was made about the operability ofthe design and the efficiency of the engine.
Realization of Discrete Quantum Billiard in 2D Optical Lattices
Creators: name: Krimer, Dmitry O.
name: Khomeriki, Ramaz
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose the method for optical visualization of Bose-Hubbard model with two interacting bosons in the form of two-dimensional (2D) optical lattices consisting of optical waveguides, where the waveguides at the diagonal are characterized by different refractive index than others elsewhere, modeling the boson-boson interaction. We study the light intensity distribution function averaged over direction of propagation for both ordered and disordered cases, exploring sensitivity of the averaged picture with respect to the beam injection position. For our finite systems the resulting patterns reminiscent the ones set in billiards and therefore we introduce a definition of discrete quantum billiard discussing the possible relevance to its well established continuous counterpart.
Theoretical and numerical study of free-surface flow of viscoplastic fluids : 2D dambreaks, axisymmetrical slumps and surges down an inclined slope
Creators: name: Liu, Ye
Publisher: name: University of British Columbia
Year: 2019

description: Abstract: The dynamics of free surface flow of yield stress fluid under gravity has been an open problem, both in theory and in computation. The contribution of this thesis comes in three parts. First, we report the results of computations for two dimensional dambreaks of viscoplastic fluid, focusing on the phenomenology of the collapse, the mode of initial failure, and the final shape of the slump. The volume-of-fluid method (VOF) is used to evolve the surface of the viscoplastic fluid, and its rheology is captured by either regularizing the viscosity or using an augmented-Lagrangian scheme. The interface is tracked by the Piecewise-Linear-Interface-Calculation (PLIC) scheme, modified in order to avoid resolution issues associated with the over-ridden finger of ambient fluid that results from the no slip condition and the resulting inability to move the contact line. We establish that the regularized and augmented-Lagrangian methods yield comparable results. The numerical results are compared with asymptotic theories valid for relatively shallow or vertically slender flow, with a series of previously reported experiments, and with predictions based on plasticity theory. Second, we report computations of the axisymmetric slump of viscoplastic fluid, with the PLIC scheme improved for mass conservation. The critical yield stress for failure is computed and bounded analytically using plasticity methods. The simulations are compared with experiments either taken from existing literature or performed using Carbopol. The comparison is satisfying for lower yield stresses; discrepancies for larger yield stresses suggest that the mechanism of release may affect the experiments. Finally, we report asymptotic analyses and numerical computations for surges of viscoplastic fluid down an incline with low inertia. The asymptotic theory applies for relatively shallow gravity currents. The anatomy of the surge consists of an upstream region that converges to a uniform sheet flow, and over which a truly rigid plug sheaths the surge. The plug breaks further downstream due to the build up of the extensional stress acting upon it, leaving instead a weakly yielded superficial layer, or pseudo-plug. Finally, the surge ends in a steep flow front that lies beyond the validity of shallow asymptotics.
Computational advances in gravitational microlensing: a comparison of CPU, GPU, and parallel, large data codes
Creators: name: Bate, N. F.
name: Fluke, C. J.
name: Barsdell, B. R.
name: Garsden, H.
name: Lewis, G. F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: To assess how future progress in gravitational microlensing computation at high optical depth will rely on both hardware and software solutions, we compare a direct inverse ray-shooting code implemented on a graphics processing unit (GPU) with both a widely-used hierarchical tree code on a single-core CPU, and a recent implementation of a parallel tree code suitable for a CPU-based cluster supercomputer. We examine the accuracy of the tree codes through comparison with a direct code over a much wider range of parameter space than has been feasible before. We demonstrate that all three codes present comparable accuracy, and choice of approach depends on considerations relating to the scale and nature of the microlensing problem under investigation. On current hardware, there is little difference in the processing speed of the single-core CPU tree code and the GPU direct code, however the recent plateau in single-core CPU speeds means the existing tree code is no longer able to take advantage of Moore's law-like increases in processing speed. Instead, we anticipate a rapid increase in GPU capabilities in the next few years, which is advantageous to the direct code. We suggest that progress in other areas of astrophysical computation may benefit from a transition to GPUs through the use of "brute force" algorithms, rather than attempting to port the current best solution directly to a GPU language -- for certain classes of problems, the simple implementation on GPUs may already be no worse than an optimised single-core CPU version.
description: 11 pages, 4 figures, accepted for publication in New Astronomy
Pt/Ti/Al2O3/Al tunnel junctions showing electroforming-free bipolar resistive switching behavior
Creators: name: Jeong, Doo Seok
name: Cheong, Byung-ki
name: Kohlstedt, Hermann
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigated electroforming-free bipolar resistive switching behavior in Pt/Ti/Al2O3/Al tunnel junctions where the Al2O3 tunnel barrier was naturally formed on Al in air. Various compliance current values for the junction's set switching successfully lead to various resistance values in its low resistance state, suggesting the possibility for multi-level-operation. A mechanism for the bipolar switching is qualitatively discussed in terms of the modulation of the tunnel barrier by the reactive Ti layer on top of the barrier.
Energy dispersion in radiation pressure accelerated ion beams
Creators: name: Grech, M.
name: Skupin, S.
name: Diaw, A.
name: Schlegel, T.
name: Tikhonchuk, V. T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We address the problem of energy dispersion of radiation pressure accelerated (RPA) ion beams emerging from a thin (solid) target. Two different acceleration schemes, namely phase-stable acceleration and multi-stage acceleration, are considered by means of analytical modelling and one-dimensional particle-in-cell simulations. Our investigations offer a deeper understanding of RPA and allow us to derive some guidelines for generating monoenergetic ion beams.
description: 22 pages, 11 figures
Identifying complex periodic windows in continuous-time dynamical systems using recurrence-based methods
Creators: name: Zou, Yong
name: Donner, Reik V.
name: Donges, Jonathan F.
name: Marwan, Norbert
name: Kurths, Jürgen
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The identification of complex periodic windows in the two-dimensional parameter space of certain dynamical systems has recently attracted considerable interest. While for discrete systems, a discrimination between periodic and chaotic windows can be easily made based on the maximum Lyapunov exponent of the system, this remains a challenging task for continuous systems, especially if only short time series are available (e.g., in case of experimental data). In this work, we demonstrate that nonlinear measures based on recurrence plots obtained from such trajectories provide a practicable alternative for numerically detecting shrimps. Traditional diagonal line-based measures of recurrence quantification analysis (RQA) as well as measures from complex network theory are shown to allow an excellent classification of periodic and chaotic behavior in parameter space. Using the well-studied Rössler system as a benchmark example, we find that the average path length and the clustering coefficient of the resulting recurrence networks (RNs) are particularly powerful discriminatory statistics for the identification of complex periodic windows.
Influence of surface chemistry on the electronic properties of graphene related carbon materials
Creators: name: Chutia, Arunabhirm
name: Cimpoesu, Fanica
name: Tsuboi, Hideyuki
name: Miyamotob, Akira
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A theoretical study on the influence of organic functional groups on the electronic properties of graphene related carbon materials was carried out. Here we report, using density functional theory and tight-binding approach, that the best candidates for conducting supramolecular devices can be obtained by engineering the surface chemistry and stacking conformation of these materials.
APPLICATION OF BLOCKCHAIN TECHNOLOGIES IN THE FINANCIAL SECTOR - FROM CONFRONTATION TO SYMBIOSIS
Creators: name: Dziatkovskii, A.D.
name: Grunevsky, V.A.
Publisher: name: Инновации и инвестиции
Year: 2021
Subjects: FINANCIAL SECTOR
BLOCKCHAIN
USE OF BLOCKCHAIN TECHNOLOGIES
CRYPTOCURRENCY

description: Currently, the key influencing factors in the financial sector are economic transformation, digital transformation and the development of information technology. Blockchain technology with cryptocurrency integration is a core technology that has promising applications in the financial sector. Thus, the purpose of this article is to study the impact of blockchain technologies on the banking industry. To understand this technology, this study aims to analyze the technological functions using the architecture model and anatomy of blockchain. Much research into blockchain technology is conducted based on consensus algorithms, four of which are discussed in this article. The greatest importance is attached to the transition from confrontation between the banking industry and blockchain technologies to a state of interaction, based on contradictions and symbiosis.
The Globular Cluster/Central Black Hole Connection in Galaxies
Creators: name: Harris, Gretchen L. H.
name: Harris, William E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We explore the relation between the total globular cluster population in a galaxy (N_GC) and the the mass of its central black hole (M_BH). Using a sample of 33 galaxies, twice as large as the original sample discussed by Burkert & Tremaine (2010), we find that N_GC for elliptical and spiral galaxies increases in almost precisely direct proportion to M_BH. The S0-type galaxies by contrast do not follow a clear trend, showing large scatter in M_BH at a given N_GC. After accounting for observational measurement uncertainty, we find that the mean relation defined by the E and S galaxies must also have an intrinsic or "cosmic" scatter of +-0.2 in either logN_GC or logM_BH. The residuals from this correlation show no trend with globular cluster specific frequency. We suggest that these two types of galaxy subsystems (central black hole and globular cluster system) may be closely correlated because they both originated at high redshift during the main epoch of hierarchical merging, and both require extremely high-density conditions for formation. Lastly, we note that roughly 10% of the galaxies in our sample (one E, one S, and two S0) deviate strongly from the main trend, all in the sense that their M_BH is at least 10x smaller than would be predicted by the mean relation.
description: 7 pages, 4 figures; accepted for publication in MNRAS
Study of Eclipsing Binary and Multiple Systems in OB Associations: I. Ori OB1a - IM Mon
Creators: name: Bakis, H.
name: Bakis, V.
name: Bilir, S.
name: Mikulasek, Z.
name: Zejda, M.
name: Yaz, E.
name: Demircan, O.
name: Bulut, I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: All available photometric and spectroscopic observations were collected and used as the basis of a detailed analysis of the close binary IM Mon. The orbital period of the binary was refined to 1.19024249(0.00000014) days. The Roche equipotentials, fractional luminosities (in (B, V) and H_p bands) and fractional radii for the component stars in addition to mass ratio q, inclination i of the orbit and the effective temperature T_eff of the secondary cooler less massive component were obtained by the analysis of light curves. IM Mon is classified to be a detached binary system in contrast to the contact configuration estimations in the literature. The absolute parameters of IM Mon were derived by the simultaneous solutions of light and radial velocity curves as M_1,2=5.50(0.24)M_o and 3.32(0.16)M_o, R1,2=3.15(0.04)R_o and 2.36(0.03)R_o, T_eff1,2=17500(350) K and 14500(550) K implying spectral types of B4 and B6.5 ZAMS stars for the primary and secondary components respectively. The modelling of the high resolution spectrum revealed the rotational velocities of the component stars as V_rot1=147(15) km/s and V_rot2=90(25) km/s. The photometric distance of 353(59) pc was found more precise and reliable than Hipparcos distance of 341(85) pc. An evolutionary age of 11.5(1.5) Myr was obtained for IM Mon. Kinematical and dynamical analysis support the membership of the young thin-disk population system IM Mon to the Ori OB1a association dynamically. Finally, we derived the distance, age and metallicity information of Ori OB1a sub-group using the information of IM Mon parameters.
description: 26 pages, 5 figures and 6 tables, accepted for publication in Publication of the Astronomical Society of Japan
Scalar-isoscalar states, gravitational form factors, and dimension-2 condensates in a large-Nc Regge approach
Creators: name: Arriola, Enrique Ruiz
name: Broniowski, Wojciech
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Scalar-isoscalar states are analyzed within the large-Nc Regge approach. We find that the lightest f0(600) scalar-isoscalar state fits very well into the pattern of the radial Regge trajectory. We confirm the obtained mass values from an analysis of the pion and nucleon spin-0 gravitational form factors, recently measured on the lattice. We find that a simple two-state model suggests a meson nature of f0(600), and a glueball nature of f0(980), which naturally explains the ratios of various coupling constants. Finally, matching to the OPE requires a fine-tuned mass condition of the vanishing dimension-2 condensate in the Regge approach with infinitely many scalar-isoscalar states.
description: Talk given at the 9th Conference On Quark Confinement and the Hadron Spectrum (Confinement IX), 30 Aug. - 3 Sept. 2010, Madrid, Spain
IPT2019-Problem 16- Camera Inception (Polytechnic University of Milan, Italy)
Creators: name: Bossi, Alessandro
name: Nobis, Mauro
Publisher: name: Zenodo
Year: 2020
Subjects: IPT
IPT2019
Camera Inception

description: IPT 2019 Problem 16 Camera Inception Polytechnic University of Milan: If you project in real time what a camera is recording and use that camera to film this projection, you will see a pattern of recursively nested images (the so-called Droste effect). Due to the finite speed of light and processing time of the camera, each image will be slightly shifted in time. Determine under what conditions can the effect be used to measure the speed of light.
$SL(2,R)$ symmetry and quasi-normal modes in the BTZ black hole
Creators: name: Zhang, Hongbao
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: With the help of two new intrinsic tensor fields associated with the $SL(2,R)$ quadratic Casimir of Killing fields, we uncover the $SL(2,R)$ symmetry satisfied by the solutions to the equations of motion for various fields in the BTZ black hole in a uniform way by performing tensor and spinor analysis without resorting to any specific coordinate system. Then with the standard algebraic method developed recently, we determine the quasi-normal modes for various fields in the BTZ black hole. As a result, the quasi-normal modes are given by the infinite tower of descendants of the chiral highest weight mode, which is in good agreement with the previous analytic result obtained by exactly solving equations of motion instead.
description: JHEP style, 1+13 pages, version to appear in JHEP
Measuring agricultural greenhouse gas exchange over a conventionally managed highbush blueberry field
Creators: name: Pow, Patrick Ka Chun
Publisher: name: University of British Columbia
Year: 2019

description: Agricultural fields are significant sources of carbon dioxide (CO₂), nitrous oxide (N₂O) and methane (CH₄), which has implications for future climate change. In Canada, studies incorporating all three greenhouse gases (GHGs) in agricultural settings are limited to Ontario, Quebec and the Prairies and generally involve short-duration static-chamber measurements. Results from these studies may not generalize well to British Columbia (BC) on the west coast, which has a milder climate and different cropping systems. This study quantified year-round (January 1, 2018 – December 31, 2018) CO₂, N₂O and CH₄ exchange over a conventionally managed highbush blueberry field on Westham Island in Delta, BC, Canada using the eddy-covariance (EC) method. Continuous measurements using EC allowed for quantification of diurnal courses of both CO₂ and N₂O exchange, whereas sporadic measurements may not accurately reproduce the complete diurnal cycle of GHG emissions. Sawdust mulching may have contributed to a reduction in evapotranspiration but has implications for increased CO₂ and N₂O emissions. Field management including fertilization and mowing was associated with substantial changes in GHG exchange, suggesting that management strategies can be targeted for potential GHG mitigation. The field was a net source of all measured GHGs and emitted 838 g CO₂e m-² year-¹, with CO₂ contributing the largest proportion (76%) followed by N₂O (20%) and CH4 (4%). The annual net ecosystem exchange (NEE) was 173 g C m-² year-¹ with the ratio of annual gross primary productivity (GPP) to ecosystem respiration (Re) being 0.88. After accounting for inputs and outputs of carbon (C), the field sequestered a net of 231 g C m-² year-¹. While soil temperature was found to be an important environmental factor controlling GHG emissions, soil moisture was also found to be an important factor, which has implications on future feedback cycles and climate change.
IPT2019-Problem 14-Solar Cell Characterizer (DTU, Denmark)
Creators: name: Larsen, Benjamin
Publisher: name: Zenodo
Year: 2020
Subjects: IPT
IPT2019
Solar Cell Characterizer

description: IPT 2019 Problem 14 Solar Cell Characterizer DTU: Propose and implement a method to determine the irradiance and color temperature of a light source by using solar cell materials? How accurately can they be measured? What are the limitations of your method? What are the relevant parameters?
Marketing childhood : a Foucauldian discourse analysis of elementary dress codes
Creators: name: Franzmann, Mariah
Publisher: name: University of British Columbia
Year: 2019

description: “My body is not a distraction” and “Yes, I have breasts” were the slogans used by a group of secondary students from Princeton Secondary School in Princeton, British Columbia who went braless to protest the disciplining of female students for showing their bra straps. In response, the school’s Vice Principal stated “It’s not all about bra straps. I believe in individual expression but I don’t want to see anyone’s butt cheeks” (Demeer, 2018). Body surveillance through dress codes has been a common, but not unattested, practice in public schools. The messages of the dress codes, similar to the Vice Principal’s response, reveals how bodies are constructed as offensive, uncomfortable, distracting, and unruly. Dress codes are often gendered to specifically target girls’ bodies as sexual objects that need to be covered (Arns, 2017; Drewicz Ewing, 2014; Pomerantz, 2007). They can also carry racist or classist assumptions that protect hegemonic white, middle-class values (Aghasaleh, 2018; Morris, 2005). This thesis shifts the discussion from the bodies of secondary students to the place where dress code disciplining begins, at the Elementary school level. Dress codes are not only value-laden, but actively work as a social practice to produce childhood itself (Pomerantz, 2007). The aim of this thesis was to map out how seven public Elementary school dress codes position bodies and how actors in the surveillance of bodies, such as parents, staff, and students, are entangled in the practice of body disciplining. Through the methods of a Foucauldian discourse analysis, which looks at how disciplinary power works through surveillance to produce subjects, it is argued that dress codes construct childhood as a period of co-investment during which the child’s body is the property of parents and, likewise, the student’s body is property of the school. A major theme throughout the analysis is the concept of productivity and its relation to cultural and economic capital.
IPT2019-Problem 13-String Shooter (University of Lyon, France)
Creators: name: Wang, Pascal
Publisher: name: Zenodo
Year: 2020
Subjects: IPT
IPT2019
String Shooter

description: IPT 2019 Problem 13 String Shooter University of Lyon: A closed loop of string fed between two high-speed rotating wheels seems to defy gravity. Explain the overall shape of the loop and investigate the propagation of waves on the string.