cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Developing novel methods to characterise zirconium hydrides in 2D and 3D
Creators: name: Gonzalez-Duque, Laura
Publisher: name: Zenodo
Year: 2025
Subjects: 3D characterisation
microstructural characterisation
hydrides
zirconium
residual stress
CPM
3D-EBSD

description: Poster for the conference "21st International Symposium on Zirconium in the Nuclear Industry", organised by ASTM Committee B10 on Reactive and Refractory Metals and Alloys.

Date: April 14 - April 17, 2025
Shaping Magnetic Fields with Zero-Magnetic-Permeability Media
Creators: name: Sanchez, Alvaro
name: Bort-Soldevila, Natanael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Some of the most important technological challenges of today's society, such as fusion reactors for future clean unlimited energy or the next generation of medical imaging techniques, require precise spatial shapes of strong magnetic fields. Achieving these high fields is currently hindered by limitations such as large forces damaging the wires in coils or the saturation of ferromagnets at high fields. Here we demonstrate a novel paradigm for creating magnetic landscapes. By enclosing magnetic sources within zero-magnetic-permeability (ZMP) media, a set of novel properties is unveiled. The magnetic field shape directly results from the contour of the outer surface of the ZMP enclosure, which allows the realization of basically any imaginable field landscape. Also, currents embedded in ZMP media can be fully magnetically isolated, which eliminates the forces in the wires, one of the main factors that currently impedes achieving very high magnetic fields. We confirm these properties, rooted in fundamental laws of electromagnetism, by numerical simulations and by proof-of-principle experiments using conventional high-temperature superconductors as ZMP materials, which showcase the practical applicability of our ideas. The freedom in the design of magnetic fields provided by ZMP media enables to concentrate and homogenize magnetic fields with unprecedented precision, as needed in medical imaging techniques and particle-physics experiments, and to realize devices like perfect electromagnetic absorbers of mechanical vibrations.
description: Accepted by Journal of Applied Physics. After it is published, it will be found at doi: 10.1063/5.0063263
Identification of BASS DR3 Sources as Stars, Galaxies and Quasars by XGBoost
Creators: name: Li, Changhua
name: Zhang, Yanxia
name: Cui, Chenzhou
name: Fan, Dongwei
name: Zhao, Yongheng
name: Wu, Xue-Bing
name: He, Boliang
name: Xu, Yunfei
name: Li, Shanshan
name: Han, Jun
name: Tao, Yihan
name: Mi, Linying
name: Yang, Hanxi
name: Yang, Sisi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Beijing-Arizona Sky Survey (BASS) Data Release 3 (DR3) catalogue was released in 2019, which contains the data from all BASS and the Mosaic z-band Legacy Survey (MzLS) observations during 2015 January and 2019 March, about 200 million sources. We cross-match BASS DR3 with spectral databases from the Sloan Digital Sky Survey (SDSS) and the Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST) to obtain the spectroscopic classes of known samples. Then, the samples are cross-matched with ALLWISE database. Based on optical and infrared information of the samples, we use the XGBoost algorithm to construct different classifiers, including binary classification and multiclass classification. The accuracy of these classifiers with the best input pattern is larger than 90.0 per cent. Finally, all selected sources in the BASS DR3 catalogue are classified by these classifiers. The classification label and probabilities for individual sources are assigned by different classifiers. When the predicted results by binary classification are the same as multiclass classification with optical and infrared information, the number of star, galaxy and quasar candidates is separately 12 375 838 (P_S>0.95), 18 606 073 (P_G>0.95) and 798 928 (P_Q>0.95). For these sources without infrared information, the predicted results can be as a reference. Those candidates may be taken as input catalogue of LAMOST, DESI or other projects for follow up observation. The classified result will be of great help and reference for future research of the BASS DR3 sources.
description: 15 pages, 10 tables, 6 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society Main Journal
Association between the nucleosome footprint of plasma DNA and neoadjuvant chemotherapy response for breast cancer
Creators: name: 杨旭(Xu Yang)
Publisher: name: CNGB
Year: 2021
Subjects: Genome sequencing and assembly
Raw sequence reads
Genome sequencing
Multiisolate
Medical

description: Gene expression signatures have been used to predict the outcome of chemotherapy for breast cancer. The nucleosome footprint of cell-free DNA (cfDNA) carries gene expression information of the original tissues and thus may be used to predict the response to chemotherapy. The patients showed distinct nucleosome footprints at Transcription Start Sites (TSSs) compared with normal donors. And the nucleosome positions on cfDNAs of patients with different responses were different.
Critical Metallicities for Second-Generation Stars
Creators: name: Shull, J. Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The first massive stars may influence the formation of second-generation stars, in part by their metal enrichment of the surrounding gas. We investigate the "critical metallicity", defined as the the value, Z_crit, at which primordial gas cools more efficiently by fine-structure lines of O I (63.18 microns, Si II 34.8 microns, Fe II (25.99 and 35.35 microns), and C II (157.74 microns) than by either H I or H2 line emission. We explore the time-dependent thermodynamics and fragmentation of cooling gas at redshifts z = 10-30, seeded by trace heavy elements expelled from early supernovae. Because different modes of nucleosynthesis (alpha-process, Fe-group) produce abundance ratios far from solar values, these early stellar populations are likely to be influenced by O, Si, and Fe cooling. Our models also include radiative coupling of the fine structure lines and H2 to the cosmic microwave background (CMB), which sets a temperature floor (70-80K at z = 25-30) that may increase the Jeans mass. The H2 forms from catalytic effects of electrons left over from the recombination epoch or produced during virialization. These electrons form the H^- ion (H + e -> H- + gamma), which in turn forms H2 through associative detachment (H- + H -> H2 + e). In virialized halos at z = 10-30, the gas densities (n = 1-100 cm^{-3}) are well below the critical densities, n_cr = 10^{5-6} cm^{-3}, at which (O, Si, Fe) fine-structure lines reach LTE populations and produce their most efficient cooling. Thus, Z_crit may initially exceed 0.01 Z_sun at n = 1-100 cm^{-3}, and then drop to 10^{-3.5} Z_sun at n = 10^6 cm^{-3}, where the Jeans mass may be imprinted on the stellar mass function. Primordial clouds of 10^8 M_sun at 0.01 Z_sun and 200K will produce redshifted fine structure lines, with fluxes between 10^{-22} and 10^{-21} Watts/m^2 at z = 4.
description: From "First Stars III" Conference (6 pages incl 4 figures)
Chern-Simons theory, exactly solvable models and free fermions at finite temperature
Creators: name: Tierz, Miguel
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that matrix models in Chern-Simons theory admit an interpretation as 1D exactly solvable models, paralleling the relationship between the Gaussian matrix model and the Calogero model. We compute the corresponding Hamiltonians, ground-state wavefunctions and ground-state energies and point out that the models can be interpreted as quasi-1D Coulomb plasmas. We also study the relationship between Chern-Simons theory on $S^3$ and a system of N one-dimensional fermions at finite temperature with harmonic confinement. In particular we show that the Chern-Simons partition function can be described by the density matrix of the free fermions in a very particular, crystalline, configuration. For this, we both use the Brownian motion and the matrix model description of Chern-Simons theory and find several common features with c=1 theory at finite temperature. Finally, using the exactly solvable model result, we show that the finite temperature effect can be described with a specific two-body interaction term in the Hamiltonian, with 1D Coulombic behavior at large separations.
description: 19 pages, v2: references added
Anisotropic flow: Achievements, Difficulties, Expectations
Creators: name: Voloshin, Sergei A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Anisotropic flow measurements play a crucial role in understanding the physics and bulk properties of the system created in heavy ion collisions. In this talk I briefly review the most important results obtained so far, recent developments in the analysis techniques and the interpretation of the results, and what should we expect next, both at RHIC and LHC. I also discuss event anisotropies sensitive to the strong parity violation effects.
description: Proceedings, Plenary talk at Quark Matter 2008, Jaipur, India, Feb.2008
Luminosity distance in "Swiss cheese" cosmology with randomized voids: I. Single void size
Creators: name: Vanderveld, R. Ali
name: Flanagan, Eanna E.
name: Wasserman, Ira
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently there have been suggestions that the Type Ia supernova data can be explained using only general relativity and cold dark matter with no dark energy. In "Swiss cheese" models of the Universe, the standard Friedmann-Robertson-Walker picture is modified by the introduction of mass compensating spherical inhomogeneities, typically described by the Lemaitre-Tolman-Bondi metric. If these inhomogeneities correspond to underdense cores surrounded by mass-compensating overdense shells, then they can modify the luminosity distance-redshift relation in a way that can mimic accelerated expansion. It has been argued that this effect could be large enough to explain the supernova data without introducing dark energy or modified gravity. We show that the large apparent acceleration seen in some models can be explained in terms of standard weak field gravitational lensing together with insufficient randomization of void locations. The underdense regions focus the light less than the homogeneous background, thus dimming supernovae in a way that can mimic the effects of acceleration. With insufficient randomization of the spatial location of the voids and of the lines of sight, coherent defocusing can lead to anomalously large demagnification effects. We show that a proper randomization of the voids and lines of sight reduces the effect to the point that it can no longer explain the supernova data.
description: 6 pages, 2 figures, revtex4. v2: final version accepted by PRD, minor changes that do not qualitatively affect results
แบบจำลอง 2 มิติ สถานะชั่วครู่เพื่อทำนายแนวโน้มของอุณหภูมิที่ผนังท่อความร้อน
Creators: name: นรินทร์ ศิริวรรณ
name: เกียรติสิน กาญจนวนิชกุล
name: ธีรพัฒน์ ชมพูคำ
name: สัมพันธ์ ฤทธิเดช
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2014
Subjects: ท่อความร้อน, 2 มิติ, สถานะคงที่, แนวโน้มของอุณหภูมิ

description: 1, 8, วารสารวิชาการและวิจัย มทร.พระนคร
PHENIX measurements of 3D emission source functions in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV
Creators: name: Lacey, Roy A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A state-of-the-art 3D source imaging technique is used to extract the 3D two-pion source function in central and mid-central Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The source function indicates a previously unresolved non-Gaussian tail in the directions of the pion pair transverse momentum (out) and along the beam (long). Model comparisons give robust estimates for several characteristics of the emission source, including its transverse size, its mean proper breakup time $τ$ and its emission duration $Δτ$. These estimates are incompatible with the predictions for a first order phase transition. However, they point to significant relative emission times which could result from a crossover phase transition.
description: Proceedings, Quark Matter 2008, Jaipur, India
Counterarchitecture
Creators: name: Bartfai-Walcott, Katalin
Publisher: name: Zenodo
Year: 2025

description: This document defines and introduces the term counterarchitecture, authored by Katalin Klara Bartfai-Walcott, to describe a foundational design philosophy for digital systems. Counterarchitecture refers to the deliberate inversion of prevailing architectures that extract, simulate, or disempower human agency. It names a structural response to digital systems that operate without human presence, replacing post hoc consent and symbolic control with enforceable authorship, real-time negotiation, and sovereign data ownership. This concept complements the author’s earlier work on psycho-technography by offering a principled engineering alternative that centers choice, representation, and subjectivity in system design. This publication serves as the primary record of the concept’s definition and authorship, and is released under a Creative Commons Attribution 4.0 International License (CC BY 4.0) for public citation and academic use.
title: GREAT Newsletter 2
title: GREAT Adventures: Successes from April - September 2024
titleType: AlternativeTitle
Creators: name: Yau, Jane
Publisher: name: Zenodo
Year: 2024
Subjects: Games
Games-based research
Gamification
Policy stakeholders
Climate change
Project newsletter
GREAT Project

description: A look back on the last six months, GREAT consortium members have not only been busy engaged in the project work but also presenting at the 5th European Citizen Science Association Conference; the International Conference of Young Scientists; leading a delegation of games industry studios to the UN Development Programme’s (UNDP) Climate Promise event; attending panel discussions at the Creative Business Cup 2024 Global Finals; and much more!
The kinematic origin of the cosmological redshift
Creators: name: Bunn, Emory F.
name: Hogg, David W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: A common belief about big-bang cosmology is that the cosmological redshift cannot be properly viewed as a Doppler shift (that is, as evidence for a recession velocity), but must be viewed in terms of the stretching of space. We argue that, contrary to this view, the most natural interpretation of the redshift is as a Doppler shift, or rather as the accumulation of many infinitesimal Doppler shifts. The stretching-of-space interpretation obscures a central idea of relativity, namely that it is always valid to choose a coordinate system that is locally Minkowskian. We show that an observed frequency shift in any spacetime can be interpreted either as a kinematic (Doppler) shift or a gravitational shift by imagining a suitable family of observers along the photon's path. In the context of the expanding universe the kinematic interpretation corresponds to a family of comoving observers and hence is more natural.
description: Accepted for publication in Am. J. Phys. Many small changes from previous version, but basic argument remains unchanged
Principal Component Analysis versus Factor Analysis
Creators: name: Gniazdowski, Zenon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: The article discusses selected problems related to both principal component analysis (PCA) and factor analysis (FA). In particular, both types of analysis were compared. A vector interpretation for both PCA and FA has also been proposed. The problem of determining the number of principal components in PCA and factors in FA was discussed in detail. A new criterion for determining the number of factors and principal components is discussed, which will allow to present most of the variance of each of the analyzed primary variables. An efficient algorithm for determining the number of factors in FA, which complies with this criterion, was also proposed. This algorithm was adapted to find the number of principal components in PCA. It was also proposed to modify the PCA algorithm using a new method of determining the number of principal components. The obtained results were discussed.
description: 54 pages, 13 figures, 35 tables
Schwarzbewusstsein. Eine autoethnografische Arbeit zu afro-deutscher Selbstfindung und Politisierung.
Creators: name: Goltz, Raja
Publisher: name: Zenodo
Year: 2023
Subjects: Rassismus
Autoethnografie
Empowerment
psychische Gesundheit

description: Die von der Hochschule für Künste im Sozialen, Ottersberg für eine Publikation ausgewählte Bachelor-Arbeit von Raja Goltz beschäftigt sich mit dem wachsenden Bewusstsein der Schwarzen Positionierung und den Rassismus-Erfahrungen, welche die Autorin als ausschließlich weiß sozialisierte afro-deutsche Frau erlebt. Es geht um das Erinnern, Verstehen, Einordnen, Worte finden und handlungsfähig werden. Die Auswirkungen des Prozesses der fortwährenden Politisierung, als Folge eigener Rassismus-Erfahrungen, werden mit Fokus auf das psychische Wohlbefinden der Schreibenden betrachtet. Im autoethnografischen Forschungsdesign wird danach gefragt, ob das wachere Bewusstsein der Positionierung vor durch Rassismus-Erfahrungen induzierten psychischen Risiken schützen kann.
A model for interevent times with long tails and multifractality in human communications: An application to financial trading
Creators: name: Perello, J.
name: Masoliver, J.
name: Kasprzak, A.
name: Kutner, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: Social, technological and economic time series are divided by events which are usually assumed to be random albeit with some hierarchical structure. It is well known that the interevent statistics observed in these contexts differs from the Poissonian profile by being long-tailed distributed with resting and active periods interwoven. Understanding mechanisms generating consistent statistics have therefore become a central issue. The approach we present is taken from the Continuous Time Random Walk formalism and represents an analytical alternative to models of non-trivial priority that have been recently proposed. Our analysis also goes one step further by looking at the multifractal structure of the interevent times of human decisions. We here analyze the inter-transaction time intervals of several financial markets. We observe that empirical data describes a subtle multifractal behavior. Our model explains this structure by taking the pausing-time density in the form of a superstatistics where the integral kernel quantifies the heterogeneous nature of the executed tasks. An stretched exponential kernel provides a multifractal profile valid for a certain limited range. A suggested heuristic analytical profile is capable of covering a broader region.
description: 25 pages, 10 colored figures
title: GREAT Newsletter 1
title: GREAT Endeavors - Reflections on a Year of Impact
titleType: AlternativeTitle
Creators: name: Yau, Jane
Publisher: name: Zenodo
Year: 2024
Subjects: GREAT Project
Project newsletter
Games
Gamification
Games-based research
Climate change
Policy stakeholders

description: A look back on the past year, GREAT consortium members have not only been busy engaged in the project work but also been productive presenting and communicating its efforts with citizens, researchers, scientists, policy stakeholders, industry members and more.
Spin Waves and Quantum Criticality in the Frustrated XY Pyrochlore Antiferromagnet Er2Ti2O7
Creators: name: Ruff, J. P. C.
name: Clancy, J. P.
name: Bourque, A.
name: White, M. A.
name: Ramazanoglu, M.
name: Gardner, J. S.
name: Qiu, Y.
name: Copley, J. R. D.
name: Dabkowska, H. A.
name: Gaulin, B. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report detailed measurements of the low temperature magnetic phase diagram of Er$_2$Ti$_2$O$_7$. Heat capacity and time-of-flight neutron scattering studies of single crystals, subject to magnetic fields applied along the crystallographic [110] direction, reveal unconventional low energy states. Er$^{3+}$ magnetic ions reside on a pyrochlore lattice in Er$_2$Ti$_2$O$_7$, where local XY anisotropy and antiferromagnetic interactions give rise to a unique frustrated system. In zero field, the ground state exhibits coexisting short and long range order, accompanied by soft collective spin excitations previously believed to be absent. The application of finite magnetic fields tunes the ground state continuously through a landscape of non-collinear phases, divided by a zero temperature phase transition at $μ_0 H_c \sim$ 1.5 T. The characteristic energy scale for spin fluctuations is seen to vanish at the critical point, as expected for a second order quantum phase transition driven by quantum fluctuations.
description: 5 pages, 4 figures, submitted for publication
MPEC 2025-G51 : 2025 GG
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2025 GG

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Planet Formation in Binary Stars: The case of Gamma Cephei
Creators: name: Kley, Wilhelm
name: Nelson, Richard
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Over 30 planetary systems have been discovered to reside in binary stars. For small separations gravitational perturbation of the secondary star has a strong influence on the planet formation process. It truncates the protoplanetary disk, may shortens its lifetime, and stirs up the embedded planetesimals. Due to its small semi-major axis (18.5 AU) and large eccentricity (e=0.35) the binary $γ$ Cephei represents a particularly challenging example. In the present study we model the orbital evolution and growth of embedded protoplanetary cores of about 30 earth masses in the putative protoplanetary disk surrounding the primary star in the $γ$ Cep system. We assume coplanarity of the disk, binary and planet and perform two-dimensional hydrodynamic simulations of embedded cores in a protoplanetary disk. The presence of the eccentric secondary star perturbs the disk periodically and generates strong spiral arms at periapse which propagate toward the disk centre. The disk also becomes slightly eccentric (with e_d = 0.1-0.15), and displays a slow retrograde precession in the inertial frame. For all initial separations (2.5 to 3.5 AU) we find inward migration of the cores. For initial semi-major axes (a_p \gsim 2.7), we find a strong increase in the planetary eccentricity despite the presence of inward migration. Only cores which are initially far from the disk outer edge have a bounded orbital eccentricity which converges, roughly to the value of the planet observed in the $γ$ Cep system. We have shown that under the condition protoplanetary cores can form at around 2.5 AU, it is possible to evolve and grow such a core to form a planet with final outcome similar to that observed.
description: 12 pages, 17 figures, accepted by Astronomy & Astrophysics
Molecules with ALMA at Planet-forming Scales (MAPS) V: CO gas distributions
Creators: name: Zhang, Ke
name: Booth, Alice S.
name: Law, Charles J.
name: Bosman, Arthur D.
name: Schwarz, Kamber R.
name: Bergin, Edwin A.
name: Öberg, Karin I.
name: Andrews, Sean M.
name: Guzmán, Viviana V.
name: Walsh, Catherine
name: Qi, Chunhua
name: Hoff, Merel L. R. van 't
name: Long, Feng
name: Wilner, David J.
name: Huang, Jane
name: Czekala, Ian
name: Ilee, John D.
name: Cataldi, Gianni
name: Bergner, Jennifer B.
name: Aikawa, Yuri
name: Teague, Richard
name: Bae, Jaehan
name: Loomis, Ryan A.
name: Calahan, Jenny K.
name: Alarcón, Felipe
name: Ménard, François
name: Gal, Romane Le
name: Sierra, Anibal
name: Yamato, Yoshihide
name: Nomura, Hideko
name: Tsukagoshi, Takashi
name: Pérez, Laura M.
name: Trapman, Leon
name: Liu, Yao
name: Furuya, Kenji
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: Here we present high resolution (15-24 au) observations of CO isotopologue lines from the Molecules with ALMA on Planet-forming Scales (MAPS) ALMA Large Program. Our analysis employs $^{13}$CO and C$^{18}$O ($J$=2-1), (1-0), and C$^{17}$O (1-0) line observations of five protoplanetary disks. We retrieve CO gas density distributions, using three independent methods: (1) a thermo-chemical modeling framework based on the CO data, the broadband spectral energy distribution, and the mm-continuum emission; (2) an empirical temperature distribution based on optically thick CO lines; and (3) a direct fit to the C$^{17}$O hyperfine lines. Results from these methods generally show excellent agreement. The CO gas column density profiles of the five disks show significant variations in the absolute value and the radial shape. Assuming a gas-to-dust mass ratio of 100, all five disks have a global CO-to-H$_2$ abundance of 10-100 times lower than the ISM ratio. The CO gas distributions between 150-400 au match well with models of viscous disks, supporting the long-standing theory. CO gas gaps appear to be correlated with continuum gap locations, but some deep continuum gaps do not have corresponding CO gaps. The relative depths of CO and dust gaps are generally consistent with predictions of planet-disk interactions, but some CO gaps are 5-10 times shallower than predictions based on dust gaps. This paper is part of the MAPS special issue of the Astrophysical Journal Supplement.
description: This paper is part of the MAPS special issue of the Astrophysical Journal Supplement. 36 pages, 21 figures, accepted for publication in ApJS
The general relativistic Poynting-Robertson effect
Creators: name: Bini, Donato
name: Jantzen, Robert T.
name: Stella, Luigi
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The general relativistic version is developed for Robertson's discussion of the Poynting-Robertson effect that he based on special relativity and Newtonian gravity for point radiation sources like stars. The general relativistic model uses a test radiation field of photons in outward radial motion with zero angular momentum in the equatorial plane of the exterior Schwarzschild or Kerr spacetime.
description: 19 pages iop style, 8 eps figure files for 5 figures
Il processo editoriale delle prime edizioni italiane del 'Tristram Shandy'
Creators: name: D'Ambrosio, Mariano
Publisher: name: Prassi Ecdotiche della Modernità Letteraria
Year: 2019
Subjects: Laurence Sterne; Tristram Shandy; Formiggini; Einaudi; Classici del Ridere; Narratori Stranieri Tradotti; traduzione; editoria; storia dell’editoria; processi editoriali; politiche di collana; Carlo Levi

description: Questo articolo ricostruisce, attraverso l’analisi di documenti di archivio, il processo editoriale delle prime due edizioni italiane del Tristram Shandy di Laurence Sterne: quella pubblicata nei «Classici del Ridere» dall’editore Formiggini (1922) e quella pubblicata nella collana «Narratori Stranieri Tradotti» dalla casa editrice Einaudi (1958), con la celebre prefazione di Carlo Levi. Il capitolo conclusivo prende in esame due edizioni più recenti del romanzo di Sterne: l’edizione londinese della Visual Editions (2010) e l’edizione critica pubblicata nei «Meridiani» Mondadori (2016).

 The editorial process of the first Italian editions of Tristram Shandy: Formiggini (1922) and Einaudi (1958)

This paper retraces, through the examination of archive documents, the publishing process of the two first Italian editions of Laurence Sterne’s Tristram Shandy: the edition published by Formiggini in the collection «Classici del Ridere» (1922) and the one published by Einaudi in the collection «Narratori Stranieri Tradotti» (1958), which includes a famous foreword by Carlo Levi. The last chapter examines two recent editions of Sterne’s novel: the one by London-based publisher Visual Editions (2010) and the critical edition published by Mondadori in the «Meridiani» collection.
description: Prassi Ecdotiche della Modernità Letteraria, N. 4/I (2019)
Pathological structural conversion of α-synuclein at the mitochondria induces neuronal toxicity
Creators: name: Choi, Minee L.
name: Chappard, Alexandre
name: Singh, Bhanu P.
name: Maclachlan, Catherine
name: Rodrigues, Margarida
name: Fedotova, Evgeniya I.
name: Berezhnov, Alexey V.
name: De, Suman
name: Peddie, Christopher J.
name: Athauda, Dilan
name: Virdi, Gurvir S.
name: Zhang, Weijia
name: Evans, James R.
name: Wernick, Anna I.
name: Zanjani, Zeinab Shadman
name: Angelova, Plamena R.
name: Esteras, Noemi
name: Vinokurov, Andrey Y.
name: Morris, Katie
name: Jeacock, Kiani
name: Tosatto, Laura
name: Little, Daniel
name: Gissen, Paul
name: Clarke, David J.
name: Kunath, Tilo
name: Collinson, Lucy
name: Klenerman, David
name: Abramov, Andrey Y.
name: Horrocks, Mathew H.
name: Gandhi, Sonia
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Article
/631/378/1689/1718
/631/57
/631/80/642/333
article

description: Abstract: Aggregation of alpha-synuclein (α-Syn) drives Parkinson’s disease (PD), although the initial stages of self-assembly and structural conversion have not been directly observed inside neurons. In this study, we tracked the intracellular conformational states of α-Syn using a single-molecule Förster resonance energy transfer (smFRET) biosensor, and we show here that α-Syn converts from a monomeric state into two distinct oligomeric states in neurons in a concentration-dependent and sequence-specific manner. Three-dimensional FRET-correlative light and electron microscopy (FRET-CLEM) revealed that intracellular seeding events occur preferentially on membrane surfaces, especially at mitochondrial membranes. The mitochondrial lipid cardiolipin triggers rapid oligomerization of A53T α-Syn, and cardiolipin is sequestered within aggregating lipid–protein complexes. Mitochondrial aggregates impair complex I activity and increase mitochondrial reactive oxygen species (ROS) generation, which accelerates the oligomerization of A53T α-Syn and causes permeabilization of mitochondrial membranes and cell death. These processes were also observed in induced pluripotent stem cell (iPSC)–derived neurons harboring A53T mutations from patients with PD. Our study highlights a mechanism of de novo α-Syn oligomerization at mitochondrial membranes and subsequent neuronal toxicity.
MPEC 2025-G52 : 2025 FJ22
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2025 FJ22

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
The core helium flash revisited: I. One and two-dimensional hydrodynamic simulations
Creators: name: Mocak, M.
name: Mueller, E.
name: Weiss, A.
name: Kifonidis, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the hydrodynamics of the core helium flash near its peak. Past research concerned with the dynamics of this event is inconclusive. However, the most recent multidimensional hydrodynamic studies suggest a quiescent behavior and seem to rule out an explosive scenario. Previous work indicated, that depending on initial conditions, employed turbulence models, grid resolution, and dimensionality of the simulation, the core helium flash leads either to the disruption of a low-mass star or to a quiescent quasi-hydrostatic evolution. We try to clarify this issue by simulating the evolution with advanced numerical methods and detailed microphysics. Assuming spherical or axial symmetry, we simulate the evolution of the helium core of a $1.25 M_{\odot}$ star with a metallicity Z=0.02 during the core helium flash at its peak with a grid-based hydrodynamics code. We find that the core helium flash neither rips the star apart, nor that it significantly alters its structure, as convection plays a crucial role in keeping the star in hydrostatic equilibrium. In addition, our simulations show the presence of overshooting, which implies new predictions concerning mixing of chemical species in red giants.
description: 13 pages, 23 figures
J-PLUS: Searching for very metal-poor star candidates using the SPEEM pipeline
Creators: name: Galarza, Carlos Andrés
name: Daflon, Simone
name: Placco, Vinicius M.
name: Allende-Prieto, Carlos
name: Fernandes, Marcelo Borges
name: Yuan, Haibo
name: López-Sanjuan, Carlos
name: Lee, Young Sun
name: Solano, Enrique
name: Jiménez-Esteban, F.
name: Sobral, David
name: Candal, Alvaro Alvarez
name: Pereira, Claudio B.
name: Akras, Stavros
name: Martín, Eduardo
name: Teja, Yolanda Jiménez
name: Cenarro, Javier
name: Cristóbal-Hornillos, David
name: Hernández-Monteagudo, Carlos
name: Marín-Franch, Antonio
name: Moles, Mariano
name: Varela, Jesús
name: Ramió, Héctor Vázquez
name: Alcaniz, Jailson
name: Dupke, Renato
name: Ederoclite, Alessandro
name: Sodré, Laerte
name: Angulo, Raul E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We explore the stellar content of the Javalambre Photometric Local Universe Survey (J-PLUS) Data Release 2 and show its potential to identify low-metallicity stars using the Stellar Parameters Estimation based on Ensemble Methods (SPEEM) pipeline. SPEEM is a tool to provide determinations of atmospheric parameters for stars and separate stellar sources from quasars, using the unique J-PLUS photometric system. The adoption of adequate selection criteria allows the identification of metal-poor star candidates suitable for spectroscopic follow-up. SPEEM consists of a series of machine learning models which uses a training sample observed by both J-PLUS and the SEGUE spectroscopic survey. The training sample has temperatures Teff between 4\,800 K and 9\,000 K; $\log g$ between 1.0 and 4.5, and $-3.1
description: Accepted for publication in the Astronomy & Astrophysics Journal
Reconstruction of a source domain from the Cauchy data: II. Three dimensional case
Creators: name: Ikehata, Masaru
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35R30

description: This paper is concerned with reconstruction issue of some typical inverse problems and consists of three parts. First a framework of the enclosure method for an inverse source problem governed by the Helmholtz equation at a fixed wave number in three dimensions is introduced. It is based on the nonvanishing of the coefficient of the leading profile of an oscillatory integral over a domain having a conical singularity. Second an explicit formula of the coefficient for a domain having a circular cone singularity and its implication under the framework are given. Third, an application under the framework to an inverse obstacle problem governed by an inhomogeneous Helmholtz equation at a fixed wave number in three dimensions is given.
description: 26 pages
A materialidade do livro: novas projeções de um projeto em construção
Creators: name: Fernandes, Luana
name: Ladeira, Marcillene
Publisher: name: Labfront/UEMG
Year: 2023

description: O artigo estuda o livro como Projeto de Iniciação Científica (Universidade, UNIPAC) e articula pesquisadores de áreas correlacionadas:  Pedagogia, Artes, Arquitetura e Urbanismo. Sobre o título: As aventuras de Quark e sua turminha, o processo apresenta de modo discursivo um dos volumes, onde se observa a exploração tanto de processos manuais (lápis, papel e borracha), quanto também digitais (pixels). Páginas são selecionadas para esse fim. A pesquisa também apresenta uma análise quanto ao prazer da leitura (pesquisa quali-quantitativa) em teste aplicado em escola pública (Rede CTPM, Unidade São João Del Rei), na qual o N amostral contabilizou 289 alunos respondentes, em uma somatória de 314 matriculados. São 12 turmas em 3 modalidades de ensino:  fundamental (anos iniciais e anos finais) e ensino médio. Os resultados apontam para o perfil “leitor” dos educandos da escola. A tecitura dos dois processos reflexiona para o mesmo fim: confrontar a feitura de um processo versus compreender o público alvo a que se destina o objeto do estudo. Os passos dados concluem assertivas e conduzem a novos processos.
Técnicas de visualización de datos
Creators: name: Martinez, Alejandro
Publisher: name: Zenodo
Year: 2025

description: Esta subida contiene un documento html en el que se han diseñado tres visualizaciones de datos con técnicas relevantes.

TÉCNICA I (Line chart): presenta la cotización de la acción de Activision Blizzard desde 2015 hasta diciembre de 2021.

TÉCNICA II (Gantt chart): muestra los presidentes del Tribunal Constitucional Federal Alemán (BVerfG) hasta 2020.

TÉCNICA III (Bullet Graph): presenta la carga térmica en un instante temporal (01/01/14 00:00) en la red de calefacción de Flensburg, superpuesta en una escala de (hipotética) eficiencia del sistema en función de dicha carga.

Lenguaje de programación utilizado: R

Librerías utilizadas: Plotly para el diseño de las gráficas, y dplr para la preparación de datos.

Las imágenes PNG también están disponibles en la subida, aunque se recomienda utilizar el documento html para comprender el procedimiento y poder interactuar con las gráficas.

 

Gracias a los creadores de los siguientes datasets, que han sido utilizados para la creación de las gráficas:

Activision stock price dataset includes historical prices beginning 2010 January to 2022 September (Tuvshin Selenge): 10.5281/zenodo.7904772

Presidents and Vice-Presidents of the Federal Courts of Germany (Fobbe, Sean; Swalve, Tilko): 10.5281/zenodo.4568682

District heating network data for the city of Flensburg from 2014-2016 (Kaldemeyer, Cord; Boysen, Cynthia; Tuschy, Ilja): 

10.5281/zenodo.2562658
The onset of jets in classical novae
Creators: name: McLoughlin, Dominic
name: Blundell, Katherine M.
name: Lee, Steven
name: McCowage, Chris
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present two further classical novae, V906 Car and V5668 Sgr, that show jets and accretion disc spectral signatures in their H-alpha complexes throughout the first 1000 days following their eruptions. From extensive densely time-sampled spectroscopy, we measure the appearance of the first high-velocity absorption component in V906 Car, and the duration of the commencement of the main H-alpha emission. We constrain the time taken for V5668 Sgr to transition to the nebular phase using [N II] 6584Å. We find these timings to be consistent with the jet and accretion disc model for explaining optical spectral line profile changes in classical novae, and discuss the implications of this model for enrichment of the interstellar medium.
On binary quartics and the Cassels–Tate pairing
Creators: name: Fisher, Tom
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Research
Fifteenth Algorithmic Number Theory Symposium (ANTS XV)

description: Abstract: We use the invariant theory of binary quartics to give a new formula for the Cassels–Tate pairing on the 2-Selmer group of an elliptic curve. Unlike earlier methods, our formula does not require us to solve any conics. An important role in our construction is played by a certain K3 surface defined by a (2, 2, 2)-form.
Robustness of entangled states that are positive under partial transposition
Creators: name: Bandyopadhyay, Somshubhro
name: Ghosh, Sibasish
name: Roychowdhury, Vwani
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study robustness of bipartite entangled states that are positive under partial transposition (PPT). It is shown that almost all PPT entangled states are unconditionally robust, in the sense, both inseparability and positivity are preserved under sufficiently small perturbations in its immediate neighborhood. Such unconditionally robust PPT entangled states lie inside an open PPT entangled ball. We construct examples of such balls whose radii are shown to be finite and can be explicitly calculated. This provides a lower bound on the volume of all PPT entangled states. Multipartite generalization of our constructions are also outlined.
description: Published version
HD144941: The most extreme helium-strong star
Creators: name: Przybilla, N.
name: Fossati, L.
name: Jeffery, C. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Since its discovery about 50 years ago, HD144941 has generally been classified as a peculiar member of the extreme helium (EHe) supergiant stars, a very rare class of low-mass hydrogen-deficient stars. We report the detection of a strong longitudinal magnetic field based on spectropolarimetry with FORS2 on the ESO VLT with surface-averaged longitudinal field strengths as large as -9kG. This is further constrained by the detection of Zeeman splitting of spectral lines to a field strength of at least 15kG, explaining the recent finding of surface spots for this star. The quantitative analysis of the stellar atmosphere based on a hybrid non-local thermodynamic equilibrium approach and new optical spectra yields an effective temperature of 22000$\pm$500K, a logarithmic surface gravity of 4.20$\pm$0.10, and a surface helium fraction of 0.950$\pm$0.002 by number. While the metal abundances are about a factor of 10 sub-solar in absolute number, the metal-to-hydrogen ratios are typical of massive early-type stars, indicating that helium fallback in a weak, fractionated stellar wind in the presence of a magnetic field took place -- the canonical mechanism for the formation of the helium-strong phenomenon. Both the spectroscopic and the Gaia EDR3 parallax imply HD144941 to be a luminous massive star. Kinematically, we argue that HD144941 has reached its high Galactic latitude as a runaway star. We conclude that instead of being a comparatively high-gravity low-mass EHe star, HD144941 is by far the most extreme member of the magnetic massive helium-strong stars, with almost all atmospheric hydrogen substituted by helium.
description: 9 pages, 8 figures, see A&A for the published version
Real-Time Soft-Body Destruction with Multiresolution Structure
Creators: name: Lin, Xinhao
Publisher: name: Purdue University Graduate School
Year: 2025
Subjects: classificationCode: 460702
subject: Computer graphics
classificationCode: 460703
subject: Entertainment and gaming

description: This research explores how to optimize real-time, high-performance destructible soft body physical simulations using Gram-Schmidt voxel constraints. Current methodologies ensure the stability of simulation results through voxelization but lack support for high-resolution voxel models and are not widely applied in practical scenarios. This study focuses on implementing multi-resolution techniques for voxelized soft body simulations, enabling automatic subdivision and adaptive resolution selection for destructible soft bodies. The results show that the multi-resolution approach will significantly reduce computational costs without introducing noticeable visual artifacts. The developed solution offers new insights and potential avenues for gaming and interactive media applications.
Disorder-Induced Inhomogeneities of the Superconducting State Close to the Superconductor-Insulator Transition
Creators: name: Sacepe, B.
name: Chapelier, C.
name: Baturina, T. I.
name: Vinokur, V. M.
name: Baklanov, M. R.
name: Sanquer, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Scanning tunneling spectroscopy at very low temperature on homogeneously disordered superconducting Titanium Nitride thin films reveals strong spatial inhomogeneities of the superconducting gap $Δ$ in the density of states. Upon increasing disorder, we observe suppression of the superconducting critical temperature $T_c$ towards zero, enhancement of spatial fluctuations in $Δ$, and growth of the $Δ/T_c$ ratio. These findings suggest that local superconductivity survives across the disorder-driven superconductor-insulator transition.
description: 4 pages, 3 figures. Minor changes. Accepted for publication in Phys. Rev. Lett
Studying the characteristics of scientific communities using individual-level bibliometrics: the case of Big Data research
Creators: name: Lyu, Xiaozan
name: Costas, Rodrigo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Unlike most bibliometric studies focusing on publications, taking Big Data research as a case study, we introduce a novel bibliometric approach to unfold the status of a given scientific community from an individual level perspective. We study the academic age, production, and research focus of the community of authors active in Big Data research. Artificial Intelligence (AI) is selected as a reference area for comparative purposes. Results show that the academic realm of "Big Data" is a growing topic with an expanding community of authors, particularly of new authors every year. Compared to AI, Big Data attracts authors with a longer academic age, who can be regarded to have accumulated some publishing experience before entering the community. Despite the highly skewed distribution of productivity amongst researchers in both communities, Big Data authors have higher values of both research focus and production than those of AI. Considering the community size, overall academic age, and persistence of publishing on the topic, our results support the idea of Big Data as a research topic with attractiveness for researchers. We argue that the community-focused indicators proposed in this study could be generalized to investigate the development and dynamics of other research fields and topics.