cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Stability and (quasi-)localization of gravitational fluctuations in Eddington-Inspired Born-Infeld brane system
Creators: name: Fu, Qi-Ming
name: Zhao, Li
name: Yang, Ke
name: Gu, Bao-Min
name: Liu, Yu-Xiao
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Stability and localization of the gravitational perturbations for a special brane system in Eddington-inspired Born-Infeld (EiBI) gravity were studied in [Phys. Rev. D 85, 124053 (2012)]. In this paper, we show that the gravitational perturbations for a general brane system are stable, the four-dimensional graviton (massless KK graviton) can be localized on the brane, and the mass spectrum of massive KK gravitons are gapless and continuous. Two models are constructed as examples. In the first model, which is a generalization of [Phys. Rev. D 85, 124053 (2012)], the brane has no inner structure and there is no gravitational resonance (quasi-localized KK gravitons). In the second one, the background scalar field is a double-kink when the parameter in the model approaches its critical value. Correspondingly, the brane has inner structure and some gravitational resonances appear.
description: 12 pages, 8 figures, improved version
Sonnenfleckenzeichnung Nr. 68.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.03.1994, 08:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 180.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.07.1994, 07:45, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 67.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 22.03.1994, 08:45, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 202.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.08.1994, 09:45, erstellt von Michele Bianda, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Galactic Center Gamma Ray Excess in a Radiative Neutrino Mass Model
Creators: name: Borah, Debasish
name: Dasgupta, Arnab
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Fermi gamma ray space telescope data have pointed towards an excess of gamma rays with a peak around $1-3$ GeV in the region surrounding the galactic center. This anomalous excess can be described well by a dark matter candidate having mass in the range $31-40$ GeV annihilating into $b\bar{b}$ pairs with a cross section of $< σv > \simeq (1.4-2.0) \times 10^{-26} \; \text{cm}^3/\text{s}$. In this work we explore the possibility of having such a dark matter candidate within the framework of a radiative neutrino mass model. The model is a simple extension of the standard model by an additional $U(1)_X$ gauge symmetry where the standard model neutrino masses arise both at tree level as well as radiatively by the anomaly free addition of one singlet fermion $N_R$ and two triplet fermions $Σ_{1R}, Σ_{2R}$ with suitable Higgs scalars. The spontaneous gauge symmetry breaking is achieved in such a way which results in a residual $Z_2$ symmetry and hence providing a stable cold dark matter candidate. We show that the singlet fermionic dark matter candidate in our model can give rise to the galactic center gamma ray excess. The parameter space which simultaneously satisfy the constraints on relic density, direct detection scattering as well as collider bounds essentially corresponds to an s-wave resonance where the gauge boson mass $m_X$ is approximately twice that of dark matter mass $m_χ$. We also discuss the compatibility of such a light fermion singlet dark matter with light neutrino mass.
description: version 2: 18 pages, 6 figures, to appear in Physics Letters B
Sonnenfleckenzeichnung Nr. 32.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 11.02.1994, 08:45, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 308.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.12.1994, 10:45, erstellt von Andrea Manna, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
The 13 Key Elements of an Insider Threat Program
Creators: name: Costa, Daniel
name: Trzeciak, Randall
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: Software Engineering

description: In the last three years, since the arrival of the COVID-19 pandemic in the United States, the nature of the workplace has changed significantly. As of February, 76 percent of the workforce with a job that can be done from home in the United States was working a hybrid or completely remote schedule, according to Pew Research. Of that number, roughly one-third is completely remote. In this evolving work climate, organizations need to be increasingly vigilant against malicious and unintentional (non-malicious) insider incidents. Many organizations never experience a headline-grabbing, large-scale insider incident. Instead, many insider incidents are accidental or non-malicious, typically the result of a security incident or policy violation. According to our research, distraction is a key factor in unintentional insider threat incidents. Distracted workers are more likely to make mistakes that can endanger an organization, such as failing to use their company's virtual private network (VPN) or clicking on phishing links in email. For many hybrid and remote workers, distractions involving workspaces in close proximity to children and other family members can lead to unintentional risk. Comprehensive enterprise risk management that includes an insider risk program is a key component to securing organizations in this new environment. In this post, we present the 13 key elements of an insider threat program.
Early galaxy formation in warm dark matter cosmologies
Creators: name: Dayal, Pratika
name: Mesinger, Andrei
name: Pacucci, Fabio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a framework for high-redshift ($z \geq 7$) galaxy formation that traces their dark matter (DM) and baryonic assembly in four cosmologies: Cold Dark Matter (CDM) and Warm Dark Matter (WDM) with particle masses of $m_x =$ 1.5, 3 and 5 ${\rm keV}$. We use the same astrophysical parameters regulating star formation and feedback, chosen to match current observations of the evolving ultra violet luminosity function (UV LF). We find that the assembly of observable (with current and upcoming instruments) galaxies in CDM and $m_x \geq 3 {\rm keV}$ WDM results in similar halo mass to light ratios (M/L), stellar mass densities (SMDs) and UV LFs. However the suppression of small-scale structure leads to a notably delayed and subsequently more rapid stellar assembly in the $1.5 {\rm keV}$ WDM model. Thus galaxy assembly in $m_x \leq 2 {\rm keV}$ WDM cosmologies is characterized by: (i) a dearth of small-mass halos hosting faint galaxies; and (ii) a younger, more UV bright stellar population, for a given stellar mass. The higher M/L ratio (effect ii) partially compensates for the dearth of small-mass halos (effect i), making the resulting UV LFs closer to CDM than expected from simple estimates of halo abundances. We find that the redshift evolution of the SMD is a powerful probe of the nature of DM. Integrating down to a limit of $M_{UV} =-16.5$ for the James Webb Space Telescope (JWST), the SMD evolves as $\log$(SMD)$\propto -0.63 (1+z)$ in $m_x = 1.5 {\rm keV}$ WDM, as compared to $\log$(SMD)$\propto -0.44 (1+z)$ in CDM. Thus high-redshift stellar assembly provides a powerful testbed for WDM models, accessible with the upcoming JWST.
description: Accepted for publication in ApJ
Neutron-scattering measurements of the spin excitations in LaFeAsO and Ba(Fe$_{0.953}$Co$_{0.047}$)$_{2}$As$_{2}$: Evidence for a sharp enhancement of spin fluctuations by nematic order
Creators: name: Zhang, Qiang
name: Fernandes, Rafael M.
name: Lamsal, Jagat
name: Yan, Jiaqiang
name: Chi, Songxue
name: Tucker, Gregory S.
name: Pratt, Daniel K.
name: Lynn, Jeffrey W.
name: McCallum, R. W.
name: Canfield, Paul C.
name: Lograsso, Thomas A.
name: Goldman, Alan I.
name: Vaknin, David
name: McQueeney, Robert J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Inelastic neutron scattering was employed to investigate the impact of electronic nematic order on the magnetic spectra of LaFeAsO and Ba(Fe$_{0.953}$Co$_{0.047}$)$_{2}$As$_{2}$. These materials are ideal to study the paramagnetic-nematic state, since the nematic order, signaled by the tetragonal-to-orthorhombic transition at $T_{\rm S}$, sets in well above the stripe antiferromagnetic ordering at $T_{\rm N}$. We find that the temperature-dependent dynamic susceptibility displays an anomaly at $T_{\rm S}$ followed by a sharp enhancement in the spin-spin correlation length, revealing a strong feedback effect of nematic order on the low-energy magnetic spectrum. Our findings can be consistently described by a model that attributes the structural/nematic transition to magnetic fluctuations, and unveils the key role played by nematic order in promoting the long-range stripe antiferromagnetic order in iron pnictides.
description: 6 pages, 5 figures, 66 references, plus one Supplemental Material. Physical Review Letters, Accepted and in production
Sonnenfleckenzeichnung Nr. 203.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 18.08.1994, 09:45, erstellt von Michele Bianda, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Electron-positron pair production in a bifrequent oscillating electric field
Creators: name: Akal, Ibrahim
name: Villalba-Chávez, Selym
name: Müller, Carsten
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Production of electron-positron pairs from the quantum vacuum polarized by the superposition of a strong and a perturbative oscillating electric-field mode is studied. Our outcomes rely on a nonequilibrium quantum field theoretical approach, described by the quantum kinetic Boltzmann-Vlasov equation. By superimposing the perturbative mode, the characteristic resonant effects and Rabi-like frequencies in the single-particle distribution function are modified, as compared to the predictions resulting from the case driven by a strong oscillating field mode only. This is demonstrated in the momentum spectra of the produced pairs. Moreover, the dependence of the total number of pairs on the intensity parameter of each mode is discussed and a strong enhancement found for large values of the relative Keldysh parameter.
description: 13 pages, 8 figures
Simulations of Ion Acceleration at Non-relativistic Shocks. III. Particle Diffusion
Creators: name: Caprioli, Damiano
name: Spitkovsky, Anatoly
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We use large hybrid (kinetic protons-fluid electrons) simulations to investigate the transport of energetic particles in self-consistent electromagnetic configurations of collisionless shocks. In previous papers of this series, we showed that ion acceleration may be very efficient (up to $10-20\%$ in energy), and outlined how the streaming of energetic particles amplifies the upstream magnetic field. Here, we measure particle diffusion around shocks with different strengths, finding that the mean free path for pitch-angle scattering of energetic ions is comparable with their gyroradii calculated in the self-generated turbulence. For moderately-strong shocks, magnetic field amplification proceeds in the quasi-linear regime, and particles diffuse according to the self-generated diffusion coefficient, i.e., the scattering rate depends only on the amount of energy in modes with wavelengths comparable with the particle gyroradius. For very strong shocks, instead, the magnetic field is amplified up to non-linear levels, with most of the energy in modes with wavelengths comparable to the gyroradii of highest-energy ions, and energetic particles experience Bohm-like diffusion in the amplified field. We also show how enhanced diffusion facilitates the return of energetic particles to the shock, thereby determining the maximum energy that can be achieved in a given time via diffusive shock acceleration. The parametrization of the diffusion coefficient that we derive can be used to introduce self-consistent microphysics into large-scale models of cosmic ray acceleration in astrophysical sources, such as supernova remnants and clusters of galaxies.
description: 8 pages, 7 figures, Minor changes reflecting the version accepted to ApJ
Systematic Rectification of Language Models via Dead-end Analysis
Creators: name: Cao, Meng
name: Fatemi, Mehdi
name: Cheung, Jackie Chi Kit
name: Shabanian, Samira
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: With adversarial or otherwise normal prompts, existing large language models (LLM) can be pushed to generate toxic discourses. One way to reduce the risk of LLMs generating undesired discourses is to alter the training of the LLM. This can be very restrictive due to demanding computation requirements. Other methods rely on rule-based or prompt-based token elimination, which are limited as they dismiss future tokens and the overall meaning of the complete discourse. Here, we center detoxification on the probability that the finished discourse is ultimately considered toxic. That is, at each point, we advise against token selections proportional to how likely a finished text from this point will be toxic. To this end, we formally extend the dead-end theory from the recent reinforcement learning (RL) literature to also cover uncertain outcomes. Our approach, called rectification, utilizes a separate but significantly smaller model for detoxification, which can be applied to diverse LLMs as long as they share the same vocabulary. Importantly, our method does not require access to the internal representations of the LLM, but only the token probability distribution at each decoding step. This is crucial as many LLMs today are hosted in servers and only accessible through APIs. When applied to various LLMs, including GPT-3, our approach significantly improves the generated discourse compared to the base LLMs and other techniques in terms of both the overall language and detoxification performance.
description: The Eleventh International Conference on Learning Representations, ICLR'23
Sonnenfleckenzeichnung Nr. 300.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 15.12.1994, 08:45, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Twisting tensor and spin squeezing
Creators: name: Opatrný, Tomáš
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A unified tensor description of quadratic spin squeezing interactions is proposed, covering the single- and two-axis twisting as special cases of a general scheme. A closed set of equations of motion of the first moments and variances is derived in Gaussian approximation and their solutions are discussed from the prospect of fastest squeezing generation. It turns out that the optimum rate of squeezing generation is governed by the difference between the largest and the smallest eigenvalues of the twisting tensor. A cascaded optical interferometer with Kerr nonlinear media is proposed as one of possible realizations of the general scheme.
description: 6 pages, 3 figures, to appear in PRA
How to detect super-massive binary black holes at parsec scales
Creators: name: Liu, Xiang
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: It is difficult to find or identifying the binary black holes in parsec scales, since the dual AGN may be merged quickly. It is required to explore more possibilities to identifying binary black holes in parsec scales, we give some discussions, especially with the VLBI methods.
description: 2 pages, 1 figure, for Proceedings of IAU Symposium No. 312, 2015
Equilibrium ultrastable glasses produced by random pinning
Creators: name: Hocky, Glen M
name: Berthier, Ludovic
name: Reichman, David R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Ultrastable glasses have risen to prominence due to their potentially useful material properties and the tantalizing possibility of a general method of preparation via vapor deposition. Despite the importance of this novel class of amorphous materials, numerical studies have been scarce because achieving ultrastability in atomistic simulations is an enormous challenge. Here we bypass this difficulty and establish that randomly pinning the position of a small fraction of particles inside an equilibrated supercooled liquid generates ultrastable configurations at essentially no numerical cost, while avoiding undesired structural changes due to the preparation protocol. Building on the analogy with vapor-deposited ultrastable glasses, we study the melting kinetics of these configurations following a sudden temperature jump into the liquid phase. In homogeneous geometries, we find that enhanced kinetic stability is accompanied by large scale dynamic heterogeneity, while a competition between homogeneous and heterogeneous melting is observed when a liquid boundary invades the glass at constant velocity. Our work demonstrates the feasibility of large-scale, atomistically resolved, and experimentally relevant simulations of the kinetics of ultrastable glasses.
description: 9 pages, 5 figures
Regularity of CR maps into uniformly pseudoconvex hypersurfaces and applications to proper holomorphic maps
Creators: name: Greilhuber, Josef
name: Lamel, Bernhard
Publisher: name: arXiv
Year: 2023
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32H40, 32H02, 32M15

description: We study regularity properties of CR maps in positive codimension valued in pseudoconvex manifolds which carry a nontrivial Levi foliation. We introduce an invariant which can be used to deduce that any sufficiently regular CR map from a minimal manifold into such a foliated target is either generically smooth or geometrically highly constrained, and to show generic smoothness of sufficiently regular CR transversal CR maps between pseudoconvex hypersurfaces. As an application, we discuss boundary regularity of proper holomorphic maps into bounded symmetric domains.
description: 25 pages; to appear in Annali della Scuola Normale Superiore di Pisa, Classe di Scienze
Spectral Characteristic Evolution: A New Algorithm for Gravitational Wave Propagation
Creators: name: Handmer, Casey J.
name: Szilágyi, Béla
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a spectral algorithm for solving the full nonlinear vacuum Einstein field equations in the Bondi framework. Developed within the Spectral Einstein Code (SpEC), we demonstrate spectral characteristic evolution as a technical precursor to Cauchy Characteristic Extraction (CCE), a rigorous method for obtaining gauge-invariant gravitational waveforms from existing and future astrophysical simulations. We demonstrate the new algorithm's stability, convergence, and agreement with existing evolution methods. We explain how an innovative spectral approach enables a two orders of magnitude improvement in computational efficiency.
description: 28 pages, 9 figures
Sonnenfleckenzeichnung Nr. 56.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 11.03.1994, 13:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
MPEC 2024-S09 : 2024 RD42
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 RD42

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.
CAPRI: Efficient Inference of Cancer Progression Models from Cross-sectional Data
Creators: name: Ramazzotti, Daniele
name: Caravagna, Giulio
name: Loohuis, Loes Olde
name: Graudenzi, Alex
name: Korsunsky, Ilya
name: Mauri, Giancarlo
name: Antoniotti, Marco
name: Mishra, Bud
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We devise a novel inference algorithm to effectively solve the cancer progression model reconstruction problem. Our empirical analysis of the accuracy and convergence rate of our algorithm, CAncer PRogression Inference (CAPRI), shows that it outperforms the state-of-the-art algorithms addressing similar problems. Motivation: Several cancer-related genomic data have become available (e.g., The Cancer Genome Atlas, TCGA) typically involving hundreds of patients. At present, most of these data are aggregated in a cross-sectional fashion providing all measurements at the time of diagnosis.Our goal is to infer cancer progression models from such data. These models are represented as directed acyclic graphs (DAGs) of collections of selectivity relations, where a mutation in a gene A selects for a later mutation in a gene B. Gaining insight into the structure of such progressions has the potential to improve both the stratification of patients and personalized therapy choices. Results: The CAPRI algorithm relies on a scoring method based on a probabilistic theory developed by Suppes, coupled with bootstrap and maximum likelihood inference. The resulting algorithm is efficient, achieves high accuracy, and has good complexity, also, in terms of convergence properties. CAPRI performs especially well in the presence of noise in the data, and with limited sample sizes. Moreover CAPRI, in contrast to other approaches, robustly reconstructs different types of confluent trajectories despite irregularities in the data.We also report on an ongoing investigation using CAPRI to study atypical Chronic Myeloid Leukemia, in which we uncovered non trivial selectivity relations and exclusivity patterns among key genomic events.
Sonnenfleckenzeichnung Nr. 188.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 02.08.1994, 07:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Megathrust earthquakes: Inferences from numerical modelling and explainable artificial intelligence
Creators: name: GRACIOSA, JUAN CARLOS ACTUB
Publisher: name: Monash University
Year: 2023
Subjects: Earth system sciences

description: Our understanding on the main controls of megathrust seismicity is far from complete, particularly on how modelling the system in 3D affects the related dynamics. In this thesis, I investigated the role of 3D slab loading along convergent margins on the generation of large megathrust seismicity using numerical modelling. In addition, I demonstrated the use of explainable artificial intelligence (XAI) in solving some facets of this problem.
Sonnenfleckenzeichnung Nr. 106.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 02.05.1994, 07:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 245.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 07.10.1994, 13:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 135.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 10.06.1994, 07:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
The stellar initial mass function of early type galaxies from low to high stellar velocity dispersion: homogeneous analysis of ATLAS$^{\rm 3D}$ and Sloan Lens ACS galaxies
Creators: name: Posacki, Silvia
name: Cappellari, Michele
name: Treu, Tommaso
name: Pellegrini, Silvia
name: Ciotti, Luca
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present an investigation about the shape of the initial mass function (IMF) of early-type galaxies (ETGs), based on a joint lensing and dynamical analysis, and on stellar population synthesis models, for a sample of 55 lens ETGs identified by the Sloan Lens ACS (SLACS) Survey. We construct axisymmetric dynamical models based on the Jeans equations which allow for orbital anisotropy and include a dark matter halo. The models reproduce in detail the observed \textit{HST} photometry and are constrained by the total projected mass within the Einstein radius and the stellar velocity dispersion ($σ$) within the SDSS fibers. Comparing the dynamically-derived stellar mass-to-light ratios $(M_*/L)_{\rm dyn}$, obtained for an assumed halo slope $ρ_{\rm h}\propto r^{-1}$, to the stellar population ones $(M_*/L)_{\rm pop}$, derived from full-spectrum fitting and assuming a Salpeter IMF, we infer the mass normalization of the IMF. Our results confirm the previous analysis by the SLACS team that the mass normalization of the IMF of high $σ$ galaxies is consistent on average with a Salpeter slope. Our study allows for a fully consistent study of the trend between IMF and $σ$ for both the SLACS and \ATLAS samples, which explore quite different $σ$ ranges. The two samples are highly complementary, the first being essentially $σ$ selected, and the latter volume-limited and nearly mass selected. We find that the two samples merge smoothly into a single trend of the form $\logα=(0.38\pm0.04)\times\log(σ_{\rm e}/200\,\mathrm{km~s}^{-1})+(-0.06\pm0.01)$, where $α=(M_*/L)_{\rm dyn}/(M_*/L)_{\rm pop}$ and $σ_{\rm e}$ is the luminosity averaged $σ$ within one effective radius $R_{\rm e}$. This is consistent with a systematic variation of the IMF normalization from Kroupa to Salpeter in the interval $σ_{\rm e}\approx90-270\,\mathrm{km~s}^{-1}$.
description: 18 pages, 8 figures. Accepted for publication in MNRAS
Труднопересекаемая граница: религиозная тематика в сценическом искусстве XXIв.
Creators: name: Кузнецов Илья Владимирович
Publisher: name: Новый филологический вестник
Year: 2016
Subjects: РЕЛИГИЯ
СВЕТСКОЕ ИСКУССТВО
ТЕАТР
ГРАНИЦЫ
ПОСТМОДЕРН
RELIGION
SECULAR ART
THEATRE
BORDERS
POSTMODERN

description: В сценическом искусстве начала XXI в. сложилась тенденция к размыванию границ между религиозной и светской тематикой. Эта тенденция обусловлена общей установкой постмодернистского искусства на деконструкцию всякого рода границ и различений. Однако религиозное творчество обладает органической спецификой, принципиально отличающей его от светского искусства. Вследствие этого обстоятельства попытки использовать в театральных постановках христианскую тематику сталкиваются с сопротивлением материала. Анализ постановок, осуществленных в новосибирских театрах в 2013 г., позволяет сделать выводы о смысловых позициях, в которых обнаруживается неадекватность художественного подхода материалу. Возможность обращения средствами искусства с предметами и смыслами религиозной культуры оказывается более проблематичной, чем это представляется на первый взгляд.In stage art of early 21st century the tendency appeared to erosion of borders between religious and secular thematic. This tendency is determined by general aim of postmodern art at deconstruction of any kind of borders and distinctions. But religious creation has organic specifics that distinct it in kind from secular art. Owing to this circumstance, the attempts to use Christian thematic in stagings come into collision with resistance of material. The analysis of stagings made in Novosibirsk’s theatres in 2013 allows to make conclusions about sense positions in which non-adequacy of artistic method to the material is being revealed. The possibility to deal with subjects and senses of religious culture by means of art appears to be more problematic than it seems at first glance.
Stochastic Eulerian-Lagrangian Methods for Fluid-Structure Interactions with Thermal Fluctuations and Shear Boundary Conditions
Creators: name: Atzberger, P. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A computational approach is introduced for the study of the rheological properties of complex fluids and soft materials. The approach allows for a consistent treatment of microstructure elastic mechanics, hydrodynamic coupling, thermal fluctuations, and externally driven shear flows. A mixed description in terms of Eulerian and Lagrangian reference frames is used for the physical system. Microstructure configurations are represented in a Lagrangian reference frame. Conserved quantities, such as momentum of the fluid and microstructures, are represented in an Eulerian reference frame. The mathematical formalism couples these different descriptions using general operators subject to consistency conditions. Thermal fluctuations are taken into account in the formalism by stochastic driving fields introduced in accordance with the principles of statistical mechanics. To study the rheological responses of materials subject to shear, generalized periodic boundary conditions are developed where periodic images are shifted relative to the unit cell to induce shear. Stochastic numerical methods are developed for the formalism. As a demonstration of the methods, results are presented for the shear responses of a polymeric fluid, lipid vesicle fluid, and a gel-like material.
description: 36 pages, 10 figures, stochastic computational methods for soft materials and complex fluids at microstructure level
For a Theory of the Rhythm of verses and proses: Henri Meschonnic’s “historical anthropology of language” and Reuven Tsur’s “Cognitive Poetics”
Creators: name: Дейнека Эвелина Александровна
Publisher: name: Новый филологический вестник
Year: 2016
Subjects: АНРИ МЕШОННИК
РЕУВЕН ЦУР
ПОЭТИЧЕСКИЙ РИТМ
ИСТОРИЧЕСКАЯ АНТРОПОЛОГИЯ ЯЗЫКА
КОГНИТИВНАЯ ПОЭТИКА
РУССКИЙ ФОРМАЛИЗМ
HENRI MESCHONNIC
REUVEN TSUR
POETIC RHYTHM
HISTORICAL ANTHROPOLOGY OF LANGUAGE
COGNITIVE POETICS
RUSSIAN FORMALISM

description: В статье представлено краткое исследование двух эпистемологически различных подходов к проблеме поэтического ритма, чьи авторы, парадоксальным образом, имеют между собой много общего. Оба они родились в 1932 г., в семьях уроженцев, соответственно, Бессарабии и Румынии, стали университетскими профессорами и внесли большой вклад в реформирование методологии литературного анализа, с особым интересом к вопросам поэтического ритма, изучали библейские тексты с поэтической точки зрения, наследовали русским формалистам, уделяли специальное внимание таким аспектам литературных произведений, которые могут быть исследованы только посредством устного исполнения, и, тем не менее, разработали два практически противоположных видения поэзии и литературы как вербального искусства. В нашем исследовании мы задаемся целью реконструировать основные концептуальные и методологические положения их теорий для объяснения причин такого неожиданного итогового расхождения и для того, чтобы, возможно, наметить пути к синтезу их подходов. Наша гипотеза заключается в усмотрении в «исторической антропологии языка» Анри Мешонника и в «когнитивной поэтике» Реувена Цура двух радикально отличных, но не несовместимых, взглядов на «литературный факт», соответственно, с точки зрения гуманитарных и естественных наук.The article presents a brief comparative study of two epistemologically different approaches to the problem of poetic rhythm whose authors, paradoxically, have much in common. Both of them were born in 1932, in families originated, respectively, from the region of Bessarabia and Romania, became university professors and contributed a lot to reform the methodology of literary analysis, with particular interest to the questions of poetic rhythm, studied Bible texts from the poetic viewpoint, inherited from Russian Formalists, paid special attention to such aspects of literary works which could be investigated only through oral performance, and, nevertheless, have developed two almost opposite visions of poetry and literature as a verbal art. In our study, we aim to reconstruct the main conceptual and methodological assumptions of their theories in order to explain the reasons of such unexpected final divergence and, probably, outline ways to synthesize their approaches. Our hypothesis consists to see in Henri Meschonnic’s “historical anthropology of language” and Reuven Tsur’s “cognitive poetics” two radically different, but not incompatible, visions of “literary fact”, respectively, from the viewpoint of humanities and natural sciences.
Sonnenfleckenzeichnung Nr. 27.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 05.02.1994, 09:45, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Методики атрибуции авторства в современной отечественной филологии
Creators: name: Гурова Евгения Игоревна
Publisher: name: Новый филологический вестник
Year: 2016
Subjects: АТРИБУЦИЯ
АВТОРСТВО
ДОСТОЕВСКИЙ
ПУБЛИЦИСТИКА
ИРЛИ (ПУШКИНСКИЙ ДОМ) РАН
AUTHORSHIP ATTRIBUTION
DOSTOYEVSKY
JOURNALISM
INSTITUTE OF RUSSIAN LITERATURE (PUSHKIN HOUSE)

description: Статья представляет собой аналитический обзор современных отечественных методов определения авторства, применимых для решения конкретных филологических задач. Выделяются четыре основные методики: основанные на анализе словоупотребления, на исследовании синтаксических конструкций, на изучении последовательностей, а также комплексные (комбинированные) методы. Проведен сравнительный анализ этих методов атрибуции, выявлены их преимущества и недостатки. На примере ряда статей, приписываемых Ф.М. Достоевскому, показано, что наиболее эффективным выглядит всесторонний, многоаспектный анализ, в котором используются как традиционные филологические подходы, так и элементы лингвистической статистики.The article deals with modern national methods of authorship attribution. A special attention is paid to the possibility of applying these methods to solve philological problems. There are four basic techniques based on usage analysis, on the study of syntax, on the study of sequences and integrated (combined) methods. Comparative analysis of this attribution methods revealed their advantages and disadvantages. The issue of attributing some articles to Fyodor Dostoyevsky showed that the most effective looks comprehensive, multidimensional analysis, which uses the traditional philological approaches and elements of linguistic statistics.
Sonnenfleckenzeichnung Nr. 96.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 22.04.1994, 07:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1994

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)