cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Chandra, HST/STIS, NICER, Swift, and TESS Detail the Flare Evolution of the Repeating Nuclear Transient ASASSN-14ko
Creators: name: Payne, Anna V.
name: Auchettl, Katie
name: Shappee, Benjamin J.
name: Kochanek, Christopher S.
name: Boyd, Patricia T.
name: Holoien, Thomas W. -S.
name: Fausnaugh, Michael M.
name: Ashall, Chris
name: Hinkle, Jason T.
name: Vallely, Patrick J.
name: Stanek, K. Z.
name: Thompson, Todd A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: ASASSN-14ko is a nuclear transient at the center of the AGN ESO 253-G003 that undergoes periodic flares. Optical flares were first observed in 2014 by the All-Sky Automated Survey for Supernovae (ASAS-SN) and their peak times are well-modeled with a period of $115.2^{+1.3}_{-1.2}$ days and period derivative of $-0.0026 \pm 0.0006$. Here we present ASAS-SN, Chandra, HST/STIS, NICER, Swift, and TESS data for the flares that occurred in December 2020, April 2021, July 2021, and November 2021. The HST/STIS UV spectra evolve from blue shifted broad absorption features to red shifted broad emission features over $\sim$10 days. The Swift UV/optical light curves peaked as predicted by the timing model, but the peak UV luminosities varied between flares and the UV flux in July 2021 was roughly half the brightness of all other peaks. The X-ray luminosities consistently decreased and the spectra became harder during the UV/optical rise but apparently without changes in absorption. Finally, two high-cadence TESS light curves from December 2020 and November 2018 showed that the slopes during the rising and declining phases changed over time, which indicates some stochasticity in the flare's driving mechanism. ASASSN-14ko remains observationally consistent with a repeating partial tidal disruption event, but, these rich multi-wavelength data are in need of a detailed theoretical model.
description: 25 pages, 14 figures, 4 tables; Submitted to ApJ, comments welcome
Sonnenfleckenzeichnung Nr. 210.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.08.2006, 07:15, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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)
Assessing the habitability of planets with Earth-like atmospheres with 1D and 3D climate modeling
Creators: name: Godolt, M.
name: Grenfell, J. L.
name: Kitzmann, D.
name: Kunze, M.
name: Langematz, U.
name: Patzer, A. B. C.
name: Rauer, H.
name: Stracke, B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The habitable zone (HZ) describes the range of orbital distances around a star where the existence of liquid water on the surface of an Earth-like planet is in principle possible. While 3D climate studies can calculate the water vapor, ice albedo, and cloud feedback self-consistently and therefore allow for a deeper understanding and the identification of relevant climate processes, 1D model studies rely on fewer model assumptions and can be more easily applied to the large parameter space possible for exoplanets. We evaluate the applicability of 1D climate models to estimate the potential habitability of Earth-like exoplanets by comparing our 1D model results to those of 3D climate studies in the literature. We applied a cloud-free 1D radiative-convective climate model to calculate the climate of Earth-like planets around different types of main-sequence stars with varying surface albedo and relative humidity profile. These parameters depend on climate feedbacks that are not treated self-consistently in most 1D models. We compared the results to those of 3D model calculations in the literature and investigated to what extent the 1D model can approximate the surface temperatures calculated by the 3D models. The 1D parameter study results in a large range of climates possible for an Earth-sized planet with an Earth-like atmosphere and water reservoir at a certain stellar insolation. At some stellar insolations the full spectrum of climate states could be realized, i.e., uninhabitable conditions as well as habitable surface conditions, depending only on the relative humidity and surface albedo assumed. When treating the surface albedo and the relative humidity profile as parameters in 1D model studies and using the habitability constraints found by recent 3D modeling studies, the same conclusions about the potential habitability of a planet can be drawn as from 3D model calculations.
description: accepted by Astronomy and Astrophysics, 12 pages
Priority List of Adverse events of special interest: Rift Valley Fever (SO1-D2.3)
Creators: name: Law, Barbara
name: Strukenboom, Miriam
Publisher: name: Zenodo
Year: 2020
Subjects: Brighton Collaboration
CEPI
AESI List
Rift Valley Fever

description: To maximize the value of vaccine safety data in clinical trials given their relatively limited sample size, it is essential to standardize their collection, presentation and analysis when possible. Given serious adverse events following immunization (AEFIs) are fortuitously rare, this need for globally accepted standard case definitions that allow for valid comparisons extend to individual case reports, surveillance systems, and retrospective epidemiologic studies. This need for standardization was recognized by Dr. Robert Chen at a vaccine conference in Brighton, England in 1999. Harald Heijbel, Ulrich Heininger, Tom Jefferson, and Elisabeth Loupi joined his call one year later to launch the Brighton Collaboration as an international voluntary organization, now with more than 750 scientific experts. It aims to facilitate the development, evaluation and dissemination of high-quality information about the safety of human vaccines. The goals of the Brighton Collaboration in the domain of case definitions have been to: 1. Develop standardized case definitions for specific AEFI’s. 2. Prepare guidelines for their data collection, analysis and presentation for global use. 3. Develop and implement study protocols for evaluation of case definitions and guidelines in clinical trials and surveillance systems. 4. Raise global awareness of their availability and to educate about their benefit, monitor their global use, and facilitate access. Safety monitoring during clinical trials is a crucial component for vaccine development. Before a vaccine can receive regulatory approval for marketing, rigorous safety monitoring and reporting is required. In the CEPI funded vaccine development programs, the CEPI funded developers are the sponsors and responsible for safety monitoring of their products and have the responsibility to comply with regulatory requirements. Since CEPI funds several developers that develop vaccines for the same target, using different vaccines and platforms, harmonization of safety monitoring is essential to allow for meaningful analysis and interpretation of the safety profiles of CEPI funded vaccines. CEPI has contracted with the Brighton Collaboration, through the Task Force for Global Health, to harmonize the safety assessment of CEPI-funded vaccines via its Safety Platform for Emergency vACcines(SPEAC) Project. As part of its landscape analysis of Rift Valley Fever (RVF), this document describes the methods and results SPEAC used to arrive at the list of adverse events of special interest (AESI).
description: The SPEAC Project is funded in whole by CEPI.
$\mathcal{PT}$ symmetry in a fractional Schrödinger equation
Creators: name: Zhang, Yiqi
name: Zhong, Hua
name: Belić, Milivoj R.
name: Zhu, Yi
name: Zhong, Weiping
name: Zhang, Yanpeng
name: Christodoulides, Demetrios N.
name: Xiao, Min
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate the fractional Schrödinger equation with a periodic $\mathcal{PT}$-symmetric potential. In the inverse space, the problem transfers into a first-order nonlocal frequency-delay partial differential equation. We show that at a critical point, the band structure becomes linear and symmetric in the one-dimensional case, which results in a nondiffracting propagation and conical diffraction of input beams. If only one channel in the periodic potential is excited, adjacent channels become uniformly excited along the propagation direction, which can be used to generate laser beams of high power and narrow width. In the two-dimensional case, there appears conical diffraction that depends on the competition between the fractional Laplacian operator and the $\mathcal{PT}$-symmetric potential. This investigation may find applications in novel on-chip optical devices.
description: 8 pages, 4 figures; accepted by Laser & Photonics Reviews
Spilomicrus palustris Masner 1991
Creators: name: Notton, David G.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Diapriidae
Spilomicrus
Spilomicrus palustris

description: Spilomicrus palustris Masner, 1991: 118, 139, figs 86-86a, 110.
Valid name
Spilomicrus palustris Masner, 1991.
Summary of types
Paratype ♂.
description: Published as part of Notton, David G., 2014, A catalogue of the types of Diapriinae (Hymenoptera, Diapriidae) at the Natural History Museum, London, pp. 1-123 in European Journal of Taxonomy 75 on page 81, DOI: 10.5852/ejt.2014.75, http://zenodo.org/record/3862773
Sonnenfleckenzeichnung Nr. 302.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 20.12.2006, 08:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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)
Bischofia racemosa Yi F. Duan & X. R. Wang
Creators: name: Duan, Yi-Fan
name: Li, Yong-Fu
name: Yang, Xin-Xin
name: Nf, Xian-Rong Wang
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malpighiales
Phyllanthaceae
Bischofia
Bischofia racemosa

description: 1. Bischofia racemosa W. C. Cheng & C. D. Chu ex Yi F. Duan & X. R. Wang
 Type:— CHINA. Jiangsu: Nanjing, Xuanwuhu, 28 October 1951, C. T. Yang 20578 (holotype NF-08300375!, isotypes NF-08300304!, NF-08300306!, NF-08300311!, NF-08300331!, NF-08300333!).
 Paratypes:— CHINA. Jiangsu: Nanjing, Xuanwuhu, 6 May 1951, C. T. Yang 20394 (NF-08300301!, NF-08300308!, NF-08300309!, NF-08300312!, NF-08300329!); same locality, 15 May 1956, C. T. Yang 21484 (NF-08300307!, NF-08300338!, NF-08300339!).
 Three gatherings, C. T. Yang 20394, C. T. Yang 21484 and C. T. Yang 20578, were designated as type in the original protologue (Cheng et al. 1963). Here we designate one of the sheets of C. T. Yang 20578 as the holotype. The validating description and diagnosis were previously published by Cheng & Chu in Cheng et al. (1963: 13). Li & Gilbert (2010) treated the name as a heterotypic synonym of Bischofia polycarpa (Léveillé 1912: 296) Airy Shaw (1972: 271) in the Flora of China.
description: Published as part of Duan, Yi-Fan, Li, Yong-Fu, Yang, Xin-Xin & Nf, Xian-Rong Wang, 2016, Validation of the Chinese names Bischofia racemosa (Euphorbiaceae), Ulmus erythrocarpa and Ulmus multinervis (Ulmaceae), pp. 151-152 in Phytotaxa 247 (2) on page 151, DOI: 10.11646/phytotaxa.247.2.9, http://zenodo.org/record/13678045
On Grid Compressive Sampling for Spherical Field Measurements in Acoustics
Creators: name: Valdez, Marc Andrew
name: Yuffa, Alex J.
name: Wakin, Michael B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We derive a compressive sampling method for acoustic field reconstruction using field measurements on a predefined spherical grid that has theoretically guaranteed relations between signal sparsity, measurement number, and reconstruction accuracy. This method can be used to reconstruct band-limited spherical harmonic or Wigner $D$-function series (spherical harmonic series are a special case) with sparse coefficients. Contrasting typical compressive sampling methods for Wigner $D$-function series that use arbitrary random measurements, the new method samples randomly on an equiangular grid, a practical and commonly used sampling pattern. Using its periodic extension, we transform the reconstruction of a Wigner $D$-function series into a multi-dimensional Fourier domain reconstruction problem. We establish that this transformation has a bounded effect on sparsity level and provide numerical studies of this effect. We also compare the reconstruction performance of the new approach to classical Nyquist sampling and existing compressive sampling methods. In our tests, the new compressive sampling approach performs comparably to other guaranteed compressive sampling approaches and needs a fraction of the measurements dictated by the Nyquist sampling theorem. Moreover, using one-third of the measurements or less, the new compressive sampling method can provide over 20 dB better denoising capability than oversampling with classical Fourier theory.
description: 19 pages 14 figures
The effect of beta-alanine supplementation on maximal intensity performance: A Systematic Review and a Meta-Analysis
Creators: name: Christodoulides, Efstathios
name: Georgiou, George
name: KYRIAKI ANTONIOU
name: Michelekaki, Eleni Anna
name: Antoniou, Stephanie
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Sports Sciences
subject: Medicine and Health Sciences
subject: beta-alanine; exercise performance; maximal intensity performance; trained males; athletic performance

description: The project is a systematic review addressing the question on how does b-alanine supplementation can affect, power output, & strength output in male trained individuals and athletes compared to a placebo group.
Carbon nanobuds based on carbon nanotube caps: A first-principles study
Creators: name: Choi, Ji Il
name: Kim, Hyo Seok
name: Kim, Han Seul
name: Lee, Ga In
name: Kang, Jeung Ku
name: Kim, Yong-Hoon
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Based on density functional theory calculations, we here show that the formation of a fullerene C$_{60}$ carbon "nanobud" (CNB) on carbon nanotube (CNT) caps is energetically more favorable than that on CNT sidewalls. The dominant CNB formation mode for CNT caps is found to be the [2+2] cycloaddition reaction as in the conventional CNT sidewall case. However, it is identified to be exothermic in contrast to the endothermic reaction on CNT sidewalls. Computed reaction pathways further demonstrate that the formation (dissociation) barrier for the CNT cap-based CNB is slightly lower (significantly higher) than that of the CNT sidewall-based CNB, indicating an easier CNB formation as well as a higher structural stability. Additionally, performing matrix Green's function calculations, we study the charge transport properties of the CNB/metal electrode interfaces, and show that the C$_{60}$ bonding to the CNT cap or open end induces resonant transmissions near the Fermi level. It is also found that the good electronic linkage in the CNT cap-C$_{60}$ cycloaddition bonds results in the absence of quantum interference patterns, which contrasts the case of the CNB formed on an open-ended CNT that shows a Fano resonance profile.
description: 7 pages, 5 figures, to be published in Nanoscale
Sonnenfleckenzeichnung Nr. 39.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 13.02.2006, 08:45, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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)
Counterexamples to $L^p$ boundedness of wave operators for classical and higher order Schrödinger operators
Creators: name: Erdogan, M. Burak
name: Goldberg, Michael
name: Green, William R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the higher order Schrödinger operator $H=(-Δ)^m+V(x)$ in $n$ dimensions with real-valued potential $V$ when $n>4m-1$, $m\in \mathbb N$. We show that for any $\frac{2n}{n-4m+1}3$ and $\frac{2n}{n-3}
description: 16 pages, submitted
Sonnenfleckenzeichnung Nr. 45.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 24.02.2006, 11:00, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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)
Ulmus erythrocarpa W. C. Cheng ex Yi F. Duan & X. R. Wang 1958
Creators: name: Duan, Yi-Fan
name: Li, Yong-Fu
name: Yang, Xin-Xin
name: Nf, Xian-Rong Wang
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Ulmaceae
Ulmus
Ulmus erythrocarpa

description: 3. Ulmus erythrocarpa W. C. Cheng ex Yi F. Duan & X. R. Wang
 Type:— CHINA. Jiangsu: Nanjing, Mingxiaoling, 7 April 1948, C. W. Cheng 20047 (holotype NF-05501478!, isotypes NF-05501470!, NF-05501477!, NF-05501479!, PE-00023037!)
 Paratypes:— CHINA. Jiangsu: Nanjing, Mingxiaoling, 4 April 1948, C. W. Cheng 20044 (NF-05501471!, NF-05501472!); same locality, October 1948, C. W. Cheng 15005 (PE-00679415!).
 Three gatherings, C. W. Cheng 20047, C. W. Cheng 15005 and C. W. Cheng 20044, were designated as types in the protologue (Cheng 1958). The validating description and diagnosis were previously published by Cheng (1958: 70–71). Fu et al. (2003) treated it as a heterotypic synonym of Ulmus szechuanica Fang (1947: 22) in the Flora of China.
description: Published as part of Duan, Yi-Fan, Li, Yong-Fu, Yang, Xin-Xin & Nf, Xian-Rong Wang, 2016, Validation of the Chinese names Bischofia racemosa (Euphorbiaceae), Ulmus erythrocarpa and Ulmus multinervis (Ulmaceae), pp. 151-152 in Phytotaxa 247 (2) on page 151, DOI: 10.11646/phytotaxa.247.2.9, http://zenodo.org/record/13678045
Reduced-Order Model of Power Converters to Optimize Power Hardware-In-the-Loop Technology in Dc-Distributed Systems
Creators: name: Sanz, Marina
name: Santamargarita, Daniel
name: Huerta, Francisco
name: Ochoa, Diego
name: Lazaro, Antonio
name: Barrado, Andres
Publisher: name: arXiv
Year: 2024
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The Power Hardware-In-the-Loop (PHIL) technology provides a powerful tool for testing scenarios where there is a high-power interchange, in which the performance of field tests can be very complex or expensive. When performing PHIL simulations of systems with a high number of components, such as DC-distributed systems on a ship or aircraft, the use of switched or average models of the converters can require the use of expensive commercial real-time digital simulators (RTDS) reducing the advantages of these technology. This paper is focused on the proposal of a reduced order model of converters to be able to perform PHIL analysis of Dc-distributed systems using low resources of the required real-time digital simulator. The paper validates that the proposed reduced-order model is able to determine the stability on the Dc-distributed system in comparison with more complex converter models. Moreover, a comparison between both models regarding the required resources in the implementation in a commercial RTDS platform is performed to validate the benefits of the proposed model in performing PHIL analysis of large power distribution systems.
Quasicrystals: Making invisible materials
Creators: name: Boriskina, Svetlana V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: All-dielectric photonic quasicrystals may act as zero-refractive-index homogeneous materials despite their lack of translational symmetry and periodicity, stretching wavelengths to infinity and offering applications in light wavefront sculpting and optical cloaking.
description: 5 pages, 2 figures
Sonnenfleckenzeichnung Nr. 26.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 31.01.2006, 08:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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)
Hints of dark photon dark matter from observations and hydrodynamical simulations of the low-redshift Lyman-$α$ forest
Creators: name: Bolton, James S.
name: Caputo, Andrea
name: Liu, Hongwan
name: Viel, Matteo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Recent work has suggested that an additional $\lesssim 6.9 \rm{\, eV}$ per baryon of heating in the intergalactic medium is needed to reconcile hydrodynamical simulations with Lyman-$α$ forest absorption line widths at redshift $z\simeq 0.1$. Resonant conversion of dark photon dark matter into low frequency photons is a viable source of such heating. We perform the first hydrodynamical simulations including dark photon heating and show that dark photons with mass $m_{A'}\sim 8\times 10^{-14}\rm\,eV\,c^{-2}$ and kinetic mixing $ε\sim 5\times 10^{-15}$ can alleviate the heating excess. A prediction of this model is a non-standard thermal history for underdense gas at $z \gtrsim 3$.
description: 5+1 pages, 2+1 figures
Sonnenfleckenzeichnung Nr. 224.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.09.2006, 06:45, erstellt von Michele Bianda
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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)
Відбудова та відновлення інфраструктури авіаційного транспорту та приаеродромних територій
Creators: name: Galyna, Agieieva
Publisher: name: Zenodo
Year: 2023
Subjects: аеродром
приаеродромна територія
об'єкти критичної інфраструктури
містобудування
урбіцид
критична інфраструктура
авіація
відбудова
відновлення
аеропорти
інфраструктура авіаційного транспорту

description: Воєнні події на території України впродовж 2022-2023 років свідчать про те, що основними цілями країни-агресора є об’єкти критичної інфраструктури, пошкодження або руйнування яких значно впливає на національну безпеку і оборону, природне, техногенне та соціальне середовище. В авіаційної галузі це призвело до довготривалого призупинення функціонування аеродромів та аеропортів в цілому. Це, в свою чергу, негативно вплинуло на території та ущільнену забудову в межах впливу аеропортів, зокрема, Міжнародних аеропортів «Миколаїв», «Херсон», «Антонов» та ін. порушення цих території та їх забудови слід враховувати під час формування планів відбудови та відновлення об’єктів критичної інфраструктури, тому що між ними існують містобудівні, технологічні, технічні, економічні, екологічні, соціальні та ін. зв’язки.
 Усе це формує запит на підготовку спеціалістів із будівництва та експлуатації аеропортів та аеродромів, діяльність яких повинна бути орієнтована й на врахування нагальних проблеми відбудови та відновлення інфраструктури авіаційного транспорту, а також процесів урбанізації приаеродромних територій.
Sonnenfleckenzeichnung Nr. 92.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 21.04.2006, 07:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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)
Precise Low-Temperature Expansions for the Sachdev-Ye-Kitaev model
Creators: name: Cruz, Erick Arguello
name: Tarnopolsky, Grigory
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We solve numerically the large $N$ Dyson-Schwinger equations for the Sachdev-Ye-Kitaev (SYK) model utilizing the Legendre polynomial decomposition and reaching $10^{-36}$ accuracy. Using this we compute the energy of the SYK model at low temperatures $T\ll J$ and obtain its series expansion up to $T^{7.54}$. While it was suggested that the expansion contains terms $T^{3.77}$ and $T^{5.68}$, we find that the first non-integer power of temperature is $T^{6.54}$, which comes from the two point function of the fermion bilinear operator $O_{h_{1}}=χ\partial_τ^{3}χ$ with scaling dimension $h_{1}\approx 3.77$. The coefficient in front of $T^{6.54}$ term agrees well with the prediction of the conformal perturbation theory. We conclude that the conformal perturbation theory appears to work even though the SYK model is not strictly conformal.
description: 12 pages, 5 figures
Unified ab initio formulation of flexoelectricity and strain-gradient elasticity
Creators: name: Stengel, Massimiliano
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The theories of flexoelectricity and that of nonlocal elasticity are closely related, and are often considered together when modeling strain-gradient effects in solids. Here I show, based on a first-principles lattice-dynamical analysis, that their relationship is much more intimate than previously thought, and their consistent simultaneous treatment is crucial for obtaining correct physical answers. In particular, I identify a gauge invariance in the theory, whereby the energies associated to strain-gradient elasticity and flexoelectrically induced electric fields are individually reference-dependent, and only when summed up they yield a well-defined result. To illustrate this, I construct a minimal thermodynamic functional incorporating strain-gradient effects, and establish a formal link between the continuum description and ab initio phonon dispersion curves to calculate the relevant tensor quantities. As a practical demonstration, I apply such a formalism to bulk SrTiO$_3$, where I find an unusually strong contribution of nonlocal elasticity, mediated by the interaction between the ferroelectric soft mode and the transverse acoustic branches. These results have important implications towards the construction of well-defined thermodynamic theories where flexoelectricity and ferroelectricity coexist. More generally, they open exciting new avenues for the implementation of hierarchical multiscale concepts in the first-principles simulation of crystalline insulators.
description: 23 pages, 3 figures, 8 tables
Sonnenfleckenzeichnung Nr. 93.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 22.04.2006, 07:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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)
Concentration Inequalities for Output Statistics of Quantum Markov Processes
Creators: name: Girotti, Federico
name: Garrahan, Juan P.
name: Guţă, Mădălin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We derive new concentration bounds for time averages of measurement outcomes in quantum Markov processes. This generalizes well-known bounds for classical Markov chains which provide constraints on finite time fluctuations of time-additive quantities around their averages. We employ spectral, perturbation and martingale techniques, together with noncommutative $L_2$ theory, to derive: (i) a Bernstein-type concentration bound for time averages of the measurement outcomes of a quantum Markov chain, (ii) a Hoeffding-type concentration bound for the same process, (iii) a generalization of the Bernstein-type concentration bound for counting processes of continuous time quantum Markov processes, (iv) new concentration bounds for empirical fluxes of classical Markov chains which broaden the range of applicability of the corresponding classical bounds beyond empirical averages. We also suggest potential application of our results to parameter estimation and consider extensions to reducible quantum channels, multi-time statistics and time-dependent measurements, and comment on the connection to so-called thermodynamic uncertainty relations.
Sonnenfleckenzeichnung Nr. 83.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 12.04.2006, 08:00, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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)
Role of rotational inertia for collective phenomena in active matter
Creators: name: Caprini, Lorenzo
name: Gupta, Rahul Kumar
name: Löwen, Hartmut
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the effect of rotational inertia on the collective phenomena of underdamped active systems and show that the increase of the moment of inertia of each particle favors non-equilibrium phase coexistence, known as motility induced phase separation, and counteracts its suppression due to translational inertia. Our conclusion is supported by a non-equilibrium phase diagram (in the plane spanned by rotational inertial time and translational inertial time) whose transition line is understood theoretically through scaling arguments. In addition, rotational inertia increases the correlation length of the spatial velocity correlations in the dense cluster. The fact that rotational inertia enhances collective phenomena, such as motility induced phase separation and spatial velocity correlations, is strongly linked to the increase of rotational persistence. Moreover, large moments of inertia induce non-monotonic temporal (cross) correlations between translational and rotational degrees of freedom truly absent in non-equilibrium systems.
Sonnenfleckenzeichnung Nr. 258.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 21.10.2006, 12:00, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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. 30.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 04.02.2006, 08:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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. 161.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 04.07.2006, 07:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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)
Theory of the Jitter radiation in a magnetized plasma accompanying temperature gradient
Creators: name: Hattori, Makoto
name: Fujiki, Kazushiro
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The linear stability of a magnetized plasma accompanying temperature gradient was reexamined by using plasma kinetic theory. The anisotropic velocity distribution function was decomposed into two components. One is proportional to the temperature gradient parallel to and the other is proportional to the temperature gradient perpendicular to the back ground magnetic field. Since the amplitude of the anisotropic velocity distribution function is proportional to the heat conductivity and the heat conductivities perpendicular to the magnetic field is strongly reduced, the first component of the anisotropic velocity distribution function is predominant. The anisotropic velocity distribution function induced by the temperature gradient along the back ground magnetic field drives plasma kinetic instability and the circular polarized magnetic plasma waves are excited. The instability is almost identical to Weibel instability in weakly magnetized plasma. However, depending on whether wave vectors of modes are parallel to or antiparallel to the back ground magnetic field, the growth rate is suppressed or enhanced due to back ground magnetic field. In the strongly magnetized plasma, one mode is stabilized and only one of the modes remains unstable. The Jitter radiation spectrum formulae emitted by relativistic electrons when they travel through the magnetized plasma with the plasma waves driven by the instability, are deduced at the first time. The synchrotron emission and the Jitter radiation are simultaneously emitted from the same relativistic electron. The Jitter radiation is expected to be circularly polarized but with a very small polarization degree since almost the same amount of left and right handed circular polarized magnetic waves are excited by the instability.
description: 13 pages, 6 figures, accepted for publication in PASJ
Sonnenfleckenzeichnung Nr. 89.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 18.04.2006, 07:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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)
Large-Signal Model of Graphene Field-Effect Transistors -- Part I: Compact Modeling of GFET Intrinsic Capacitances
Creators: name: Pasadas, Francisco
name: Jiménez, David
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a circuit-compatible compact model of the intrinsic capacitances of graphene field-effect transistors (GFETs). Together with a compact drain current model, a large-signal model of GFETs is developed combining both models as a tool for simulating the electrical behavior of graphene-based integrated circuits, dealing with the DC, transient behavior, and frequency response of the circuit. The drain current model is based in a drift-diffusion mechanism for the carrier transport coupled with an appropriate field-effect approach. The intrinsic capacitance model consists of a 16-capacitance matrix including self-capacitances and transcapacitances of a four-terminal GFET. To guarantee charge conservation, a Ward-Dutton linear charge partition scheme has been used. The large-signal model has been implemented in Verilog-A, being compatible with conventional circuit simulators and serving as a starting point toward the complete GFET device model that could incorporate additional non-idealities.
description: 6 pages, 6 figures. Action H2020: Research & Innovation Actions (RIA), Title: Graphene-based disruptive technologies. GrapheneCore1, Grant no. 696656 European Union (EU) Horizon 2020. IEEE Transactions on Electron Devices (2016). arXiv admin note: text overlap with arXiv:1512.07159
Sonnenfleckenzeichnung Nr. 211.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 26.08.2006, 07:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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. 136.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 09.06.2006, 08:00, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2006

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)
Characteristic subspaces and hyperinvariant frames
Creators: name: Astuti, Pudji
name: Wimmer, Harald K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Rings and Algebras (math.RA)
subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 15A04, 47A15, 15A18, 20K01

description: Let $f$ be an endomorphism of a finite dimensional vector space $V$ over a field $K$. An $f$-invariant subspace of $V$ is called hyperinvariant (respectively characteristic) if it is invariant under all endomorphisms (respectively automorphisms) that commute with $f$. We assume $|K| = 2$, since all characteristic subspaces are hyperinvariant if $|K| > 2$. The hyperinvariant hull $W^h$ of a subspace $ W$ of $ V$ is defined to be the smallest hyperinvariant subspace of $V$ that contains $ W$, the hyperinvariant kernel $W_H$ of $ W$ is the largest hyperinvariant subspace of $V$ that is contained in $W$, and the pair $( W_H, W^h) $ is the hyperinvariant frame of $W$. In this paper we study hyperinvariant frames of characteristic non-hyperinvariant subspaces $W$. We show that all invariant subspaces in the interval $[ W_H, W^h ]$ are characteristic. We use this result for the construction of characteristic non-hyperinvariant subspaces.
description: 28 pages
Quantum Goemans-Williamson Algorithm with the Hadamard Test and Approximate Amplitude Constraints
Creators: name: Patti, Taylor L.
name: Kossaifi, Jean
name: Anandkumar, Anima
name: Yelin, Susanne F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Semidefinite programs are optimization methods with a wide array of applications, such as approximating difficult combinatorial problems. One such semidefinite program is the Goemans-Williamson algorithm, a popular integer relaxation technique. We introduce a variational quantum algorithm for the Goemans-Williamson algorithm that uses only $n{+}1$ qubits, a constant number of circuit preparations, and $\text{poly}(n)$ expectation values in order to approximately solve semidefinite programs with up to $N=2^n$ variables and $M \sim O(N)$ constraints. Efficient optimization is achieved by encoding the objective matrix as a properly parameterized unitary conditioned on an auxilary qubit, a technique known as the Hadamard Test. The Hadamard Test enables us to optimize the objective function by estimating only a single expectation value of the ancilla qubit, rather than separately estimating exponentially many expectation values. Similarly, we illustrate that the semidefinite programming constraints can be effectively enforced by implementing a second Hadamard Test, as well as imposing a polynomial number of Pauli string amplitude constraints. We demonstrate the effectiveness of our protocol by devising an efficient quantum implementation of the Goemans-Williamson algorithm for various NP-hard problems, including MaxCut. Our method exceeds the performance of analogous classical methods on a diverse subset of well-studied MaxCut problems from the GSet library.
description: 21 pages, 6 figures. Updated files to the version of manuscript accepted by Quantum