cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sonnenfleckenzeichnung Nr. 3553.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 03.03.1902, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1902

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
Sonnenfleckenzeichnung Nr. 2375.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 24.07.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
ENTREPRENEURIAL SKILLS AND THEIR IMPACT ON THE GROWTH TRAJECTORY OF SMES IN ENUGU METROPOLIS
Creators: name: Ngozi Amarachi, Eze
name: Uchenna Obiora, Nwosu
Publisher: name: continental
Year: 2024
Subjects: Entrepreneurial Competencies, SME Growth

description: The study evaluated the effect of entrepreneurial skills on the performance of small and medium enterprises in Enugu state. The specific objective was to: examine the effect of leadership skills on the output of SMEs and evaluate the effect of networking skills on the profits making of SMEs in Enugu metropolis. The area of the study was Enugu Metropolis.  Two hundred and seventy-three (273) business owners and employees were selected for the study. The study used the descriptive survey design approach. The primary source of data was the administration of questionnaire. Two hundred and fifty-three (253) respondents returned their questionnaire and accurately filled. Data was presented and analyzed by mean score and standard deviation using Sprint Likert Scale. The hypotheses were analyzed using Z - test statistic tool. The findings indicated that Leadership skills had significant positive effect on the output of SMEs in Enugu metropolis, Z (95, n = 272), 7.034 < 9.944, P. <.05 and Networking skills had significant positive effect on the profits making of SMEs in Enugu metropolis, Z(95, n = 272), 7.034 < 9.944,  P. <.05. The study concluded that Leadership skills and Networking skills had significant positive effect on the output and profits making t of SMEs in Enugu metropolis.  The study recommended among others that the owners or management of the small and medium enterprises should provide direction and vision, motivate and inspire others, and help create an environment conducive to success by promoting communication and collaboration among team members.
Sonnenfleckenzeichnung Nr. 2444.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 11.11.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
A Speed Bump: SN 2021aefx Shows that Doppler Shift Alone can Explain Early-Excess Blue Flux in Some Type Ia Supernovae
Creators: name: Ashall, C.
name: Lu, J.
name: Shappee, B. J.
name: Burns, C. R.
name: Hsiao, E. Y.
name: Kumar, S.
name: Morrell, N.
name: Phillips, M. M.
name: Shahbandeh, M.
name: Baron, E.
name: Boutsia, K.
name: Brown, P. J.
name: DerKacy, J. M.
name: Galbany, L.
name: Hoeflich, P.
name: Krisciunas, K.
name: Mazzali, P.
name: Piro, A. L.
name: Stritzinger, M. D.
name: Suntzeff, N. B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present early-time photometric and spectroscopic observations of the Type Ia Supernova (SN Ia) 2021aefx. The early time u-band light curve shows an excess flux when compared to normal SNe Ia. We suggest that the early-excess blue flux may be due to a rapid change in spectral velocity in the first few days post explosion, produced by the emission of the Ca II H&K feature passing from the u to the B bands on the time scale of a few days. This effect could be dominant for all SNe Ia which have broad absorption features and early-time velocities over 25,000 km/s. It is likely to be one of the main causes of early-excess u-band flux in SNe Ia which have early-time high-velocities. This effect may also be dominant in the UV filters, as well as in places where the SN spectral energy distribution is quickly rising to longer wavelengths. The rapid change in velocity can only produce a monotonic change (in flux-space) in the u-band. For objects which explode at lower velocities, and have a more structured shape in the early-excess emission, there must also be an additional parameter producing the early-time diversity. More early time observations, in particular early spectra, are required to determine how prominent this effect is within SNe Ia.
description: Accepted for publication in ApJ Letters on 22nd May 2022
Effective Potential in Finite Formulation of QFT
Creators: name: Mooij, Sander
name: Shaposhnikov, Mikhail
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In recent works, we have shown how $n$-point correlation functions in perturbative QFT can be computed without running into intermediate divergences. Here we want to illustrate explicitly that one can calculate the quantum effective potential by the same method. As a main example, we consider a theory with two fields having large and small vacuum expectation values (vev). We show that no fine-tuning between the {\it physical quantities} is needed to keep the hierarchy between the vevs of different fields.
description: 24 pages, 6 figures
Sonnenfleckenzeichnung Nr. 2352.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 29.06.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
Sonnenfleckenzeichnung Nr. 2344.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 19.06.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
Towards A Book Publishers Citation Reports. First Approach Using The Book Citation Index
Creators: name: Torres-Salinas, Daniel
name: Robinson-García, Nicolás
name: López-Cózar, Emilio Delgado
Publisher: name: Zenodo
Year: 2012
Subjects: subject: Books
subject: Monographs
subject: Book Citation Index
subject: Citation analysis
subject: Thomson Reuters
subject: Rankings
subject: Journal Citation Reports
subject: Research evaluation
subject: Social Sciences
subject: Humanities
subject: FOS: Humanities
subject: Publisher
subject: Scientific communication

description: The absence of books and book chapters in the Web of Science Citation Indexes (SCI, SSCI and A&HCI) has always been considered an important flaw but the Thomson Reuters 'Book Citation Index' database was finally available in October of 2010 indexing 29,618 books and 379,082 book chapters. The Book Citation Index opens a new window of opportunities for analyzing these fields from a bibliometric point of view. The main objective of this article is to analyze different impact indicators referred to the scientific publishers included in the Book Citation Index for the Social Sciences and Humanities fields during 2006-2011. This way we construct what we have called the 'Book Publishers Citation Reports'. For this, we present a total of 19 rankings according to the different disciplines in Humanities & Arts and Social Sciences & Law with six indicators for scientific publishers.
description: Nota : Este artículo se ha publicado posteriormente con actualización del contenido en: Torres-Salinas, D.; Robinson-García, N.; Jiménez-Contreras, E. y Delgado López-Cózar, E. Towards a "Book Publishers Citation Reports". First approach using the "Book Citation Index". Revista Española de Documentación Científica 35(4): 615-620 (2012).

Referencia bibliográfica: Torres-Salinas, D.; Robinson-García, N.; Delgado López-Cózar, E. Towards a "Book Publishers Citation Reports". First approach using the "Book Citation Index". Ec3 Working Papers, 7 (2012).
Constraints on Explosion Timescale of Core-Collapse Supernovae Based on Systematic Analysis of Light Curves
Creators: name: Saito, Sei
name: Tanaka, Masaomi
name: Sawada, Ryo
name: Moriya, Takashi J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Explosion mechanism of core-collapse supernovae is not fully understood yet. In this work, we give constraints on the explosion timescale based on $^{56}$Ni synthesized by supernova explosions. First, we systematically analyze multi-band light curves of 82 stripped-envelope supernovae (SESNe) to obtain bolometric light curves, which is among the largest samples of the bolometric light curves of SESNe derived from the multi-band spectral energy distribution. We measure the decline timescale and the peak luminosity of the light curves and estimate the ejecta mass ($M_{\rm ej}$) and $^{56}$Ni mass ($M_{\rm Ni}$) to connect the observed properties with the explosion physics. We then carry out one-dimensional hydrodynamics and nucleosynthesis calculations, varying the progenitor mass and the explosion timescale. From the calculations, we show that the maximum $^{56}$Ni mass that $^{56}$Ni-powered SNe can reach is expressed as $M_{\rm Ni} \lesssim 0.2 \ M_{\rm ej}$. Comparing the results from the observations and the calculations, we show that the explosion timescale shorter than 0.3 sec explains the synthesized $^{56}$Ni mass of the majority of the SESNe.
description: 21 pages, 15 figures, accepted for publication in ApJ
Yamal 2040: Scenario "Gas Boom"
Creators: name: Vilena Valeeva
name: Gabriel, Johannes
name: Stephen, Kathrin
name: Nikitina, Elena
Publisher: name: Zenodo
Year: 2018

description: This is one of the three posters presented at the annual Blue-Action meeting in November 2019. It presents the second scenario developed within the case study 5 of the Blue-Action project.
Predicting Protein Synergistic Effect in Arabidopsis using Epigenome Profiling (Source Code)
Creators: name: Hsieh, Chih-Hung
Publisher: name: Zenodo
Year: 2024

description: The provided list outlines the scripts for the QHistone project, each designated with a specific task or analysis related to histone chip-seq data processing and analysis.

1_ChIPpeakcall: This script pertains to the peak calling pipeline for histone chip-seq data.

2_ChIPdatabase: Scripts for flattening the NarrowPeak file into a matrix format,

3_ChIP_SVM: Scripts for GridSearch, Recursive Feature Elimination (RFE), and establish Support Vector Machine (SVM) model for predicting the epigeome profile of query.

4_ChIP_tSNE_PCA_MDS: Scripts for conducting t-distributed Stochastic Neighbor Embedding (tSNE), Principal Component Analysis (PCA), and Multidimensional Scaling (MDS) analyses on histone chip-seq data.

5_ChIP_hi-cluster: Scripts for hierarchical anlysis of histone chip-seq data.

6_ProteinChIPs: This script pertains to the peak calling pipeline for protein chip-seq data.

7_QhistoneWeb: Scripts contain Django code for Qhistone website.

8_Comprehensive_histone_Analysis: Scripts for comprehensive analysis of histone chip-seqs.
Sonnenfleckenzeichnung Nr. 2412.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 07.09.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
Predicting Protein Synergistic Effect in Arabidopsis using Epigenome Profiling (Source Code)
Creators: name: Hsieh, Chih-Hung
Publisher: name: Zenodo
Year: 2024

description: The provided list outlines the scripts for the QHistone project, each designated with a specific task or analysis related to histone chip-seq data processing and analysis.

1_ChIPpeakcall: This script pertains to the peak calling pipeline for histone chip-seq data.

2_ChIPdatabase: Scripts for flattening the NarrowPeak file into a matrix format,

3_ChIP_SVM: Scripts for GridSearch, Recursive Feature Elimination (RFE), and establish Support Vector Machine (SVM) model for predicting the epigeome profile of query.

4_ChIP_tSNE_PCA_MDS: Scripts for conducting t-distributed Stochastic Neighbor Embedding (tSNE), Principal Component Analysis (PCA), and Multidimensional Scaling (MDS) analyses on histone chip-seq data.

5_ChIP_hi-cluster: Scripts for hierarchical anlysis of histone chip-seq data.

6_ProteinChIPs: This script pertains to the peak calling pipeline for protein chip-seq data.

7_QhistoneWeb: Scripts contain Django code for Qhistone website.

8_Comprehensive_histone_Analysis: Scripts for comprehensive analysis of histone chip-seqs.

9_Selection_of_Machine_Learning_Model: Scripts for test 9 supervised machine learning algorithms.

See README.md for Source codes, installation guides, and step by step running commands
Sonnenfleckenzeichnung Nr. 2451.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 19.11.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
A Search for Annihilating Dark Matter in 47 Tucanae and Omega Centauri
Creators: name: Staveley-Smith, Lister
name: Bond, Emma
name: Bekki, Kenji
name: Westmeier, Tobias
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A plausible formation scenario for the Galactic globular clusters 47 Tuc and Omega Cen is that they are tidally stripped remnants of dwarf galaxies, in which case they are likely to have retained a fraction of their dark matter cores. In this study, we have used the ultra-wide band receiver on the Parkes telescope (Murriyang) to place upper limits on the annihilation rate of exotic Light Dark Matter particles (X) via the XX/$e^+e^-$ channel using measurements of the recombination rate of positronium (Ps). This is an extension of a technique previously used to search for Ps in the Galactic Centre. However, by stacking of spectral data at multiple line frequencies, we have been able to improve sensitivity. Our measurements have resulted in 3-sigma flux density (recombination rate) upper limits of 1.7 mJy (1.4x10$^{43}$ s$^{-1}$) and 0.8 mJy (1.1x10$^{43}$ s$^{-1}$) for 47 Tuc and Omega Cen, respectively. Within the Parkes beam at the cluster distances, which varies from 10 to 23 pc depending on the frequency of the recombination line, we calculate upper limits to the dark matter mass and rms dark matter density of <1.2-1.3x10$^5$ fn$^{-0.5}$ (mX/MeV c$^{-2}$) solar masses and <48-54 fn$^{-0.5}$ (mX/MeV c$^{-2}$) solar masses pc$^{-3}$ for the clusters, where fn=Rn/Rp is the ratio of Ps recombination transitions to annihilations, estimated to be 0.01. The radio limits for Omega Cen suggest that, for a fiducial dark/luminous mass ratio of 0.05, any contribution from Light Dark Matter is small unless the cross section <7.9x10$^{-28}$ (mX/MeV c$^{-2}$)$^2$ cm$^3$ s$^{-1}$. Owing to the compactness and proximity of the clusters, archival 511-keV measurements suggest even tighter limits than permitted by CMB anisotropies, <8.6x10$^{-31}$ (mX/MeV c$^{-2}$)$^2$ cm$^3$ s$^{-1}$. Our recombination rate limits substantially improve on previous radio limits for the Milky Way.
description: 11 pages, 4 figures, 3 tables; accepted by Publications of the Astronomical Society of Australia 2 May 2022; abbreviated arXiv abstract; minor corrections to match proofs; CUP open source publication
Sonnenfleckenzeichnung Nr. 2468.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 28.12.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
Yamal 2040: Scenario "Reinventing itself"
Creators: name: Vilena Valeeva
name: Gabriel, Johannes
name: Stephen, Kathrin
name: Nikitina, Elena
Publisher: name: Zenodo
Year: 2018

description: This is one of the three posters presented at the annual Blue-Action meeting in November 2019. It presents the first scenario developed within the case study 5 of the Blue-Action project.
Hydraena Monomadraena
Creators: name: Perkins, Philip D.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Hydraenidae
Hydraena

description: Hydraena (Monomadraena), new subgenus
Type Species: Hydraena (Monomadraena) tibiodentipes new species
This new subgenus comprises 45 species, which are placed in six species groups. Two of these species, H. impressicollis and H. pentarubra, were included in the molecular phylogeny of Trizzino et al. (2012), and were found to be located near the base of Hydraena (see Fig. 344). Paratypes of several of the species described herein have been retained in 100% ethanol, so future DNA sequence studies will be possible, to give a more complete picture of the basal groups of Hydraena.
Diagnosis. In addition to the usual diagnostic characters of Hydraena, with the following combination of characters: head with genae raised, with a posterior ridge, usually interrupted in midline; metaventrite with an anteromedian carina that attains the anterior margin of the plaques, frequently joining the plaques, together forming an inverted Y-shape; males with modified mesotibiae, having a row of strong spines along the inner margin (e.g., Fig. 57); and the aedeagus having only one paramere, on the right side, which is long and originates near the basal orifice.
Etymology. Named in reference to the single paramere, the geographical distribution (Madagascar), and relationship to Hydraena.
description: Published as part of Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), pp. 1-264 in Zootaxa 4342 (1) on page 30, DOI: 10.11646/zootaxa.4342.1.1, http://zenodo.org/record/1041066
Sonnenfleckenzeichnung Nr. 2335.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 09.06.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
Radio masers on WX UMa: hints of a Neptune-sized planet, or magnetospheric reconnection?
Creators: name: Kavanagh, Robert D.
name: Vidotto, Aline A.
name: Vedantham, Harish K.
name: Jardine, Moira M.
name: Callingham, Joseph R.
name: Morin, Julien
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The nearby M dwarf WX UMa has recently been detected at radio wavelengths with LOFAR. The combination of its observed brightness temperature and circular polarisation fraction suggests that the emission is generated via the electron-cyclotron maser instability. Two distinct mechanisms have been proposed to power such emission from low-mass stars: either a sub-Alfvénic interaction between the stellar magnetic field and an orbiting planet, or reconnection at the edge of the stellar magnetosphere. In this paper, we investigate the feasibility of both mechanisms, utilising the information about the star's surrounding plasma environment obtained from modelling its stellar wind. Using this information, we show that a Neptune-sized exoplanet with a magnetic field strength of 10-100 G orbiting at ~0.034 au can accurately reproduce the observed radio emission from the star, with corresponding orbital periods of 7.4 days. Due to the stellar inclination, a planet in an equatorial orbit is unlikely to transit the star. While such a planet could induce radial velocity semi-amplitudes from 7 to 396 m s$^{-1}$, it is unlikely that this signal could be detected with current techniques due to the activity of the host star. The application of our planet-induced radio emission model here illustrates its exciting potential as a new tool for identifying planet-hosting candidates from long-term radio monitoring. We also develop a model to investigate the reconnection-powered emission scenario. While this approach produces less favourable results than the planet-induced scenario, it nevertheless serves as a potential alternative emission mechanism which is worth exploring further.
description: 15 pages, 12 figures. Accepted for publication in MNRAS
Sonnenfleckenzeichnung Nr. 2405.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 29.08.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
THE NATIONAL-CULTURAL CHARACTERISTICS OF FLORA CODE SIMILES DESCRIBING WOMEN IN UZBEK AND KOREAN LANGUAGES
Creators: name: Shoira Usmanova Doctor of Philology, Professor at Alfraganus University
Publisher: name: Zenodo
Year: 2025

description: This article explores similes related to flora, including trees, flowers, and fruits, in the Uzbek and Korean languages. The study analyzes the different associations and connotations of these similes in the minds of the Uzbek and Korean peoples. The article also examines the similarities and differences in the mentality and culture of these nations through their use of flora-based similes to describe women. The key elements analyzed include tree-based, flower-based, and fruit-based similes and how they are employed to depict the beauty, delicacy, and value of women.

Keywords: simile, flora, linguocultural, connotation, association, tree, flower, fruit
Radio Spectral Energy Distributions for Single Massive Star Winds with Free-Free and Synchrotron Emission
Creators: name: Erba, Christiana
name: Ignace, Richard
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The mass-loss rates from single massive stars are high enough to form radio photospheres at large distances from the stellar surface where the wind is optically thick to (thermal) free-free opacity. Here we calculate the far-infrared, millimeter, and radio band spectral energy distributions (SEDs) that can result from the combination of free-free processes and synchrotron emission, to explore the conditions for non-thermal SEDs. Simplifying assumptions are adopted in terms of scaling relations for the magnetic field strength and the spatial distribution of relativistic electrons. The wind is assumed to be spherically symmetric, and we consider the effect of Razin suppression on the synchrotron emission. Under these conditions, long-wavelength SEDs with synchrotron emission can be either more steep or more shallow than the canonical asymptotic power-law SED from a non-magnetic wind. When non-thermal emission is present, the resultant SED shape is generally not a power-law; however, the variation in slope can change slowly with wavelength. Consequently, over a limited range of wavelengths, the SED can masquerade as approximately a power law. While most observed non-thermal long-wavelength spectra are associated with binarity, synchroton emission can have only a mild influence on single-star SEDs, requiring finer levels of wavelength sampling for detection of the effect.
description: 15 pages, 3 figures, accepted for publication in The Astrophysical Journal
Sonnenfleckenzeichnung Nr. 2397.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 20.08.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
First-principles calculations of structural and bonding properties of Li-doped tetrahedrite thermoelectrics
Creators: name: Kapera, Krzysztof
name: Kolezynski, Andrzej
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Tetrahedrite (copper antimony sulfosalt) is promising p-type themoeletric material due to very low intrinsic thermal conductivity and moderately-high power factor, with one of the limitations being lack of n-type variant to create thermoelectric generator. In this paper, DFT calculations have been carried out to study tetrahedrite doped with Li into structural voids, LixCu12Sb4S13 (0 <= x <= 3). Enthalpies of formation shows that introduction of Li into both 6b and 24g sites is energetically favorable. Dopants in those positions differently affect rattling Cu(12e) behaviour, as well as vary in magnitude of induced local disorder. Topological analysis of charge density classifies tetrahedrite as closed-shell, ionic system of interactions with some degree of covalency. Addition of Li increases bond strain and decreases structure stability. Electronic band structure shows that for x>2.0, material becomes n-type, however results are not precisely conclusive on whether structure will be synthesizable, which should be determined experimentally.
description: 17 pages, 12 figures, 4 tables
Sonnenfleckenzeichnung Nr. 2380.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 31.07.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
Kinetic Simulations of Instabilities and Particle Acceleration in Cylindrical Magnetized Relativistic Jets
Creators: name: Ortuño-Macías, José
name: Nalewajko, Krzysztof
name: Uzdensky, Dmitri A.
name: Begelman, Mitchell C.
name: Werner, Gregory R.
name: Chen, Alexander Y.
name: Mishra, Bhupendra
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Relativistic magnetized jets, such as those from AGN, GRBs and XRBs, are susceptible to current- and pressure-driven MHD instabilities that can lead to particle acceleration and non-thermal radiation. Here we investigate the development of these instabilities through 3D kinetic simulations of cylindrically symmetric equilibria involving toroidal magnetic fields with electron-positron pair plasma. Generalizing recent treatments by Alves et al. (2018) and Davelaar et al. (2020), we consider a range of initial structures in which the force due to toroidal magnetic field is balanced by a combination of forces due to axial magnetic field and gas pressure. We argue that the particle energy limit identified by Alves et al. (2018) is due to the finite duration of the fast magnetic dissipation phase. We find a rather minor role of electric fields parallel to the local magnetic fields in particle acceleration. In all investigated cases a kink mode arises in the central core region with a growth timescale consistent with the predictions of linearized MHD models. In the case of a gas-pressure-balanced (Z-pinch) profile, we identify a weak local pinch mode well outside the jet core. We argue that pressure-driven modes are important for relativistic jets, in regions where sufficient gas pressure is produced by other dissipation mechanisms.
description: 22 pages, 20 figures, accepted for publication in ApJ
Sonnenfleckenzeichnung Nr. 2437.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 21.10.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
Quasi-periodic behaviour in the $γ$-ray light curve of the blazar PKS 0405-385
Creators: name: Gong, Yunlu
name: Zhou, Liancheng
name: Yuan, Min
name: Zhang, Haiyun
name: Yi, Tingfeng
name: Fang, Jun
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We analyze the quasi-periodic oscillation (QPO) of the historical light curve of FSRQs PKS 0405-385 detected by the Fermi LAT from August 2008 to November 2021. To identify and determine the QPO signal of PKS 0405-385 in the $γ$-ray light curve, we use four time series analysis techniques based on frequency and time domains, i.e., the Lomb-Scargle periodogram (LSP), the weighted wavelet z-transform (WWZ), the REDFIT and the epoch folding. The results show that PKS 0405-385 has a quasi-periodic behavior of $\sim$2.8 yr with the significance of $\sim$4.3$σ$ in Fermi long-term monitoring. Remarkably, we also performed QPO analysis in the G-band light curve observed from October 2014 to October 2021 using LSP and WWZ technology, and the results ($\sim$4$σ$ of significance) are consistent with the periodic detection in $γ$-ray. This may imply that the optical emission is radiated by an electron population same as the \gr\ emission. In discussing the possible mechanism of quasi-periodic behavior, either the helical motion within a jet or the supermassive black hole binary system provides a viable explanation for the QPO of 2.8 yr, and the relevant parameters have been estimated.
description: 10 pages, 8 figures, Accepted for publication in ApJ
Sonnenfleckenzeichnung Nr. 2358.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 06.07.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
Hydraena (Monomadraena) bisinuloba Perkins 2017
Creators: name: Perkins, Philip D.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Hydraenidae
Hydraena
Hydraena bisinuloba

description: Hydraena (Monomadraena) bisinuloba species group
Three species are included in this group: H. bisinuloba, H. bispica, and H. quatriloba. Members of this group are of moderate size (ca. 1.69–1.97 mm), dark brown, with the margins of the pronotum slightly lighter. The dorsal punctation is coarse and dense. The anteromedian carina of the metaventrite is almost absent, represented by a very low elevation or line of granules. The posterior ridge of the genae is absent or very low. The prosternal intercoxal process (P1) is laminate, much narrower that P2, which is parallel sided. All three species have similar plaques, which are very narrow, non-carinate lines that are convergent anteriorly and widely separated posteriorly. Mesotibiae of males are slender and straight, and do not have a row of prominent sharp spines.
Based on external and aedeagal morphology the three species are closely related. The aedeagi have a similar general plan: the main piece is wide in both ventral and lateral aspects, and has a large process on the ventral surface; the distal piece is large and lobate, and the gonopore is located at the end of a short duct that does not extend above the distal piece. The single paramere (right side) is slender, originates near the basal orifice, and does not extend beyond the process of the main piece.
description: Published as part of Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), pp. 1-264 in Zootaxa 4342 (1) on pages 30-31, DOI: 10.11646/zootaxa.4342.1.1, http://zenodo.org/record/1041066
The return to nature in the Austrian radicial thinking: the case of Gunther Domenig
Creators: name: Melis, Alessandro
name: Lemes, Fabiano
name: Lara Hernandez, J. Antonio
name: Repetto, Diego
Publisher: name: KIT Scientific Publishing
Year: 2018
Subjects: Radicals
architecture
domening

description: This paper discusses the inclusion of nature in the utopian vision of the radical movements of the 60s and 70s. In particular, it presents the Austrian radicals as the first and main supporters towards the aforementioned tendency. The introduction of nature in the built environment is a feature of Austrian radicalism since its first generation which includes authors such as Raimund Abraham, Walter Pichler, Hans Hollein and Gunther Domenig. The latter is taken here presented as the main representative of this current on the architectonic scale. Three of his works are described in the text to represent three different declinations of this trend towards biomimicry.
Nonmagnetic Phase Transition in La$_3$TiSb$_5$ Observed in $^{121}$Sb Nuclear Quadrupole Resonance
Creators: name: Manago, Masahiro
name: Motoyama, Gaku
name: Nishigori, Shijo
name: Fujiwara, Kenji
name: Harima, Hisatomo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We measured the electrical resistivity and the $^{121}$Sb nuclear quadrupole resonance (NQR) spectra of La$_3$TiSb$_5$, which is a nonmagnetic reference system for a locally noncentrosymmetric antiferromagnet Ce$_3$TiSb$_5$, in order to determine its physical properties. The resistivity exhibited a hump anomaly at 120 K, suggesting a phase transition. The NQR spectra split below 110 K, whereas the nuclear spin-lattice relaxation exhibited no anomalies. These results can be explained by the incommensurate charge-density-wave (CDW) transition. This finding suggests the importance of quasi-one-dimensional characteristics and CDW instability in these systems.
description: 6 pages, 6 figures
Sonnenfleckenzeichnung Nr. 2448.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 16.11.1897, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1897

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
From Easy to Hard: Learning Language-guided Curriculum for Visual Question Answering on Remote Sensing Data
Creators: name: Yuan, Zhenghang
name: Mou, Lichao
name: Wang, Qi
name: Zhu, Xiao Xiang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Visual question answering (VQA) for remote sensing scene has great potential in intelligent human-computer interaction system. Although VQA in computer vision has been widely researched, VQA for remote sensing data (RSVQA) is still in its infancy. There are two characteristics that need to be specially considered for the RSVQA task. 1) No object annotations are available in RSVQA datasets, which makes it difficult for models to exploit informative region representation; 2) There are questions with clearly different difficulty levels for each image in the RSVQA task. Directly training a model with questions in a random order may confuse the model and limit the performance. To address these two problems, in this paper, a multi-level visual feature learning method is proposed to jointly extract language-guided holistic and regional image features. Besides, a self-paced curriculum learning (SPCL)-based VQA model is developed to train networks with samples in an easy-to-hard way. To be more specific, a language-guided SPCL method with a soft weighting strategy is explored in this work. The proposed model is evaluated on three public datasets, and extensive experimental results show that the proposed RSVQA framework can achieve promising performance.
Polar phonons and magnetic excitations in the antiferromagnet CoF$_2$
Creators: name: Dubrovin, R. M.
name: Tellez-Mora, A.
name: Garcia-Castro, A. C.
name: Siverin, N. V.
name: Novikova, N. N.
name: Boldyrev, K. N.
name: Mashkovich, E. A.
name: Romero, Aldo H.
name: Pisarev, R. V.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The coupling between antiferromagnetic spins and infrared-active phonons in solids is responsible for many intriguing phenomena and is a field of intense research with extensive potential applications in the modern devices based on antiferromagnetic spintronics and phononics. Insulating rutile antiferromagnetic crystal CoF$_2$ is one of the model materials for studying nonlinear magnetophononics due to the strong spin-lattice coupling as a result of the orbitally degenerate ground state of Co$^{2+}$ ions manifested in the plethora of static and induced piezomagnetic effects. Here we report results on the complete infrared spectroscopy study of lattice and magnetic dynamics in CoF$_2$ in a wide temperature range and their careful analysis. We observed that infrared-active phonons demonstrate frequency shifts at the antiferromagnetic ordering. Furthermore, using first-principles calculations, we examined the lattice dynamics and disclosed that these frequency shifts are rather due to the spin-phonon coupling than geometrical lattice effects. Next we found that the low-frequency dielectric permittivity demonstrates distinct changes at the antiferromagnetic ordering due to the spontaneous magnetodielectric effect caused by the behavior of infrared-active phonons. In addition, we have observed magnetic excitations in the infrared spectra and identified their magnetodipole origin. To strengthen our conclusions, we analyze the theoretical phonon-magnon coupling overall phonons at the $Γ$ point. We conclude that the largest effect comes from the $A_{1g}$ and $B_{2g}$ Raman-active modes. As such, our results establish a solid basis for further investigations and more deeper understanding of the coupling of phonons with spins and magnetic excitations in antiferromagnets.
description: 17 pages, 11 figures, 5 tables
Polycyclic Aromatic Hydrocarbon emission model in photodissociation regions I: Application to the 3.3, 6.2, and 11.2 $μ$m bands
Creators: name: Sidhu, Ameek
name: Tielens, A. G. G. M.
name: Peeters, Els
name: Cami, Jan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a charge distribution based model that computes the infrared spectrum of polycyclic aromatic hydrocarbon (PAH) molecules using recent measurements or quantum chemical calculations of specific PAHs. The model is applied to a sample of well-studied photodissociation regions (PDRs) with well-determined physical conditions (the radiation field strength, $G_{0}$, electron density $n_{e}$, and the gas temperature, $T_{\rm gas}$). Specifically, we modelled the emission of five PAHs ranging in size from 18 to 96 carbon atoms, over a range of physical conditions characterized by the ionization parameter $γ= G_{0}\times T_{\rm gas}^{1/2}/n_{e}$. The anions emerge as the dominant charge carriers in low $γ$ ($< 2\times 10^{2}$) environments, neutrals in the intermediate $γ$ ($10^{3} - 10^{4}$) environments, and cations in the high $γ$ ($ > 10^{5}$) environments. Furthermore, the PAH anions and cations exhibit similar spectral characteristics. The similarity in the cationic and anionic spectra translates into the interpretation of the 6.2/(11.0+11.2) band ratio, with high values of this ratio associated with large contributions from either cations or anions. The model's predicted values of 6.2/(11.0+11.2) and 3.3/6.2 compared well to the observations in the PDRs NGC 7023, NGC 2023, the horsehead nebula, the Orion bar, and the diffuse ISM, demonstrating that changes in the charge state can account for the variations in the observed PAH emission. We also reassess the diagnostic potential of the 6.2/(11.0+11.2) vs 3.3/(11.0+11.2) ratios and show that without any prior knowledge about $γ$, the 3.3/(11.0+11.2) can predict the PAH size, but the 6.2/(11.0+11.2) cannot predict the $γ$ of the astrophysical environment.
description: 27 pages, 24 figures, Accepted for publication in MNRAS