cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The ALMA REBELS Survey. Epoch of Reionization giants: properties of dusty galaxies at $z \approx 7$
Creators: name: Ferrara, A.
name: Sommovigo, L.
name: Dayal, P.
name: Pallottini, A.
name: Bouwens, R. J.
name: Gonzalez, V.
name: Inami, H.
name: Smit, R.
name: Bowler, R. A. A.
name: Endsley, R.
name: Oesch, P.
name: Schouws, S.
name: Stark, D.
name: Stefanon, M.
name: Aravena, M.
name: da Cunha, E.
name: De Looze, I.
name: Fudamoto, Y.
name: Graziani, L.
name: Hodge, J.
name: Riechers, D.
name: Schneider, R.
name: Algera, H. S. B.
name: Barrufet, L.
name: Hygate, A. P. S.
name: Labbe, I.
name: Li, C.
name: Nanayakkara, T.
name: Topping, M.
name: van der Werf, P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We analyse FIR dust continuum measurements for 14 galaxies ($z\approx 7$) in the ALMA REBELS LP to derive their physical properties. Our model uses three input data: (a) the UV spectral slope, $β$, (b) the observed UV continuum flux at $1500$A, $F_{\rm UV}$, (c) the observed continuum flux at $\approx 158μ$m, $F_{158}$, and considers Milky Way (MW) and SMC extinction curves, along with different dust geometries. We find that REBELS galaxies have (28-90.5)% of their star formation obscured; the total (UV+IR) star formation rates are in the range $31.5 < {\rm SFR}/ (M_\odot {\rm yr}^{-1}) < 129.5$. The sample-averaged dust mass and temperature are $(1.3\pm 1.1)\times 10^7 M_\odot$ and $52 \pm 11$ K, respectively. In some galaxies dust is abundant (REBELS-14, $M'_d \approx 3.4 \times 10^7 M_\odot$), or hot (REBELS-18, $T'_d \approx 67$ K). The dust distribution is compact ($<0.3$ kpc for 70% of the galaxies). The dust yield per supernova is $0.1 \le y_d/M_\odot \le 3.3$, with 70% of the galaxies requiring $y_d < 0.25 M_\odot$. Three galaxies (REBELS-12, 14, 39) require $y_d > 1 M_\odot$. With the SFR predicted by the model and a MW extinction curve, REBELS galaxies detected in [CII] nicely follow the local $L_{\rm CII}-$SFR relation, and are approximately located on the Kennicutt-Schmidt relation. The sample-averaged gas depletion time is of $0.11\, y_P^{-2}$ Gyr, where $y_P$ is the ratio of the gas-to-stellar distribution radius. For some systems a solution simultaneously matching the observed ($β, F_{\rm UV}, F_{158}$) values cannot be found. This occurs when the index $I_m = (F_{158}/F_{\rm UV})/(β-β_{\rm int})$, where $β_{\rm int}$ is the intrinsic UV slope, exceeds $I_m^*\approx 1120$ for a MW curve. For these objects we argue that the FIR and UV emitting regions are not co-spatial, questioning the use of the IRX-$β$ relation.
description: 22 pages, 7 figures, accepted by MNRAS. Comments welcome
Metapelite from the high‐ to ultrahigh‐pressure terrane of the Eastern Alps (Pohorje Mountains, Slovenia)—New pressure, temperature and time constraints on a polymetamorphic rock
Creators: name: Li, Botao
name: Massonne, Hans‐Joachim
name: Koller, Friedrich
name: Zhang, Junfeng
Publisher: name: FID GEO
Year: 2021

description: The Austroalpine nappe stack of the Pohorje Mountains (Mts.) in northeastern Slovenia comprises a suite of eclogite facies metamorphic rocks that were partially assigned to Eo‐Alpine ultrahigh‐pressure metamorphism (UHPM). We selected a micaschist, which was previously related to this metamorphism, for a detailed study including the chemical zonation of garnet and potassic white mica, the identification of mineral inclusion assemblages, pseudosection modelling with PERPLE_X, and monazite in‐situ dating with the electron microprobe. Polymetamorphism was revealed by (at least) two generations of garnet and phengite and four populations of monazite yielding ages of 283.6 ± 6.1 (2σ), 94.1 ± 3.7, 47.9 ± 10.8 and 26.2 ± 2.8 Ma. The Permian monazite population is characterized by relatively high Y contents (~1.15 wt% Y) and low La/Gd mass ratios (8.7) indicating its formation before the growth of porphyroblastic garnet. The Eo‐Alpine population, however, grew synchronously with garnet based on low Y contents (~0.05 wt%) and high La/Gd ratios (21.4). The older Tertiary population (48 Ma) shows also high Y contents (1.1 wt%) and low La/Gd ratios (10.6) whereas the younger Tertiary population is characterized by low Y contents. The Permian P–T conditions of 7.5–10 kbar at 600–650°C were obtained using the inclusion assemblage of staurolite+rutile+biotite in porphyroblastic garnet. High pressure (HP) but no UHPM was reconstructed for both Eo‐Alpine coarse phengite (Si = 3.22 per formula unit = pfu) and small Tertiary garnet+fine‐grained phengite (Si = 3.27 pfu) at peak pressures ~16 kbar and 18.5–23 kbar respectively. Maximum temperatures close to 650°C were likely reached during the Eo‐Alpine HP event, whereas those of the Tertiary HP event were probably ~580°C. These HP metamorphic events suggest that the Pohorje Mts. experienced both an Eo‐Alpine and a Tertiary subduction–exhumation history, the latter of which was mainly reported for underlying Penninic nappes so far.
description: MOST Special Fund from the State Key Laboratory of GPMR and the 111 Project (BP0719022)
description: National Natural Science Foundation of China http://dx.doi.org/10.13039/501100001809
Inertial range scaling of scalar flux spectra in uniformly sheared turbulence
Creators: name: Bos, Wouter J. T.
name: Bertoglio, Jean-Pierre
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: A model based on two-point closure theory of turbulence is proposed and applied to study the Reynolds number dependency of the scalar flux spectra in homogeneous shear flow with a cross-stream uniform scalar gradient. For the cross-stream scalar flux, in the inertial range the spectral behavior agrees with classical predictions and measurements. The streamwise scalar flux is found to be in good agreement with the results of atmospheric measurements. However, both the model results and the atmospheric measurements disagree with classical predictions. A detailed analysis of the different terms in the evolution equation for the streamwise scalar flux spectrum shows that nonlinear contributions are governing the inertial subrange of this spectrum and that these contributions are relatively more important than for the cross-stream flux. A new expression for the scalar flux spectra is proposed. It allows us to unify the description of the components in one single expression, leading to a classical K^-7/3 inertial range for the cross-stream component and to a new K^-23/9 scaling for the streamwise component that agrees better with atmospheric measurements than the K^-3 prediction of J. C. Wyngaard and O. R. Coté [Quart. J. R. Met. Soc. 98, 590 (1972)].
(Auf) Humboldts Spuren. Eine bauforscherische Untersuchung der „Casa Humboldt“ am Antisana in Ecuador
Creators: name: Salzer, Leonhard
name: Nöbauer, Anna
Publisher: name: HiN - Alexander von Humboldt im Netz. Internationale Zeitschrift für Humboldt-Studien
Year: 2021

description: Zusammenfassung Vor seiner Besteigung des Antisana in Ecuador verbrachte Alexander von Humboldt mit seinem Expeditionsteam die Nacht vom 15. auf den 16. März 1802 in einer Hacienda am Fuße des Vulkangipfels, deren letztes bauliches Zeugnis eine steinerne Hütte darstellt. Bauforscherische Untersuchungen eines internationalen Forscherteams konnten die mehrschichtige Bau- und Reparaturgeschichte dieses Baudenkmals ermitteln und über eine Auswertung von Reiseberichten mehrerer Andenforscher die Nutzungsgeschichte des einzelnen Gebäudes und des gesamten Anwesens klären. Schließlich ergaben sich daraus neue Erkenntnisse zu Humboldts Aufenthalt am Antisana. Abstract Before climbing the Antisana in Ecuador, Alexander von Humboldt and his expedition team encamped at a hacienda at the foot of the volcano’s summit in the night from 15 to 16 March 1802. A stone hut is the only structural testimony of this estate that remains today. Through building archaeological investigations, an international team of researchers was able to determine the construction and restoration history of this monument. An evaluation of the descriptions of the hacienda in 19th- and early 20th-century travel accounts clarifi ed the historical use of the estate and, in particular, the existing hut, thus shedding new light on Humboldt’s stay in 1802. Resumen Previamente a su ascensión del volcán Antisana en Ecuador, Alexander von Humboldt se hospedó la noche del 15 al 16 de marzo de 1802 en una hacienda al pie del volcán, juntamente con el equipo que le acompañaba en su expedición. Si bien el último atestado que se tenía de esta comprendía una cabaña de piedra, nuevas investigaciones sobre arqueología vertical por parte de un equipo de investigación internacional muestran una nueva historia de construcción y reparación de este monumento histórico. Con ello, se pretende, por una parte, valorar en detalle las crónicas de viaje de múltiples investigadores de los Andes, así como, por otra, esclarecer la historia constructiva y de utilización de la singular edifi cación así como su papel dentro de la propiedad en que se encuentra. A través de esta investigación aparecen nuevos conocimientos sobre la estancia de Humboldt en el Antisana.
description: HiN - Alexander von Humboldt im Netz. Internationale Zeitschrift für Humboldt-Studien, Bd. 22 Nr. 43 (2021)
Additional file 1: of A novel design process for selection of attributes for inclusion in discrete choice experiments: case study exploring variation in clinical decision-making about thrombolysis in the treatment of acute ischaemic stroke
Creators: name: BrĂşn, Aoife De
name: Flynn, Darren
name: Ternent, Laura
name: Price, Christopher
name: Rodgers, Helen
name: Ford, Gary
name: Rudd, Matthew
name: Lancsar, Emily
name: Simpson, Stephen
name: Teah, John
name: Thomson, Richard
Publisher: name: figshare
Year: 2018
Subjects: subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: On-line structured prioritisation exercise (SPE). Full survey used to collect data. (DOCX 42Â kb)
Meditating in Live Stream: An Autoethnographic and Interview Study to Investigate Motivations, Interactions and Challenges
Creators: name: Li, Jingjin
name: Guo, Jiajing
name: Leshed, Gilly
Publisher: name: arXiv
Year: 2024
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: H.5.2

description: Mindfulness practice has many mental and physical well-being benefits. With the increased popularity of live stream technologies and the impact of COVID-19, many people have turned to live stream tools to participate in online meditation sessions. To better understand the practices, challenges, and opportunities in live-stream meditation, we conducted a three-month autoethnographic study, during which two researchers participated in live-stream meditation sessions as the audience. Then we conducted a follow-up semi-structured interview study with 10 experienced live meditation teachers who use different live-stream tools. We found that live meditation, although having a weaker social presence than in-person meditation, facilitates attendees in establishing a practice routine and connecting with other meditators. Teachers use live streams to deliver the meditation practice to the world which also enhances their practice and brand building. We identified the challenges of using live-stream tools for meditation from the perspectives of both audiences and teachers, and provided design recommendations to better utilize live meditation as a resource for mental wellbeing.
description: Preprint for CSCW24
The intention of Moroccan SMEs to adopt crowdfunding in response to failures of the traditional banking system: an analysis of the determinants
Creators: name: ERRASSAA Noureddine
name: EL HAMIDI Nabil
name: AIT HBIBI Amina
name: MAKHROUT Samir
Publisher: name: Zenodo
Year: 2023

description: This paper analyzes the determinants of crowdfunding adoption by Moroccan SMEs, an emerging financing alternative in response to the limitations of the banking system. Crowdfunding enables the raising of funds through digital platforms, offering new opportunities in the context of digital transformation. The study is based on a Probit model using data from 257 SMEs across various sectors and regions. The intention to adopt crowdfunding is influenced by several explanatory variables: knowledge of crowdfunding, a favorable perception of the method, access to bank credit, risk perception, the strength of the social network, and the level of digitalization. The results show that knowledge of crowdfunding, a favorable perception, a strong social network, and a high level of digitalization positively influence the intention to adopt. On the other hand, restricted access to bank credit has no significant effect, suggesting that crowdfunding is perceived more as a complementary solution than a substitute. A low perception of risks also encourages adoption, highlighting the importance of transparency and guarantees. The study recommends awareness campaigns, support for digitalization, and a clear regulatory framework to strengthen trust and promote crowdfunding. Its development could become a key driver for the growth and competitiveness of Moroccan SMEs by providing financing alternatives tailored to their needs.
$n$-Ary generalized Lie-type color algebras admitting a quasi-multiplicative basis
Creators: name: Barreiro, Elisabete
name: Calderón, Antonio Jesús
name: Kaygorodov, Ivan
name: Sánchez, José María
Publisher: name: arXiv
Year: 2018
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: The class of generalized Lie-type color algebras contains the ones of generalized Lie-type algebras, of $n$-Lie algebras and superalgebras, commutative Leibniz $n$-ary algebras and superalgebras, among others. We focus on the class of generalized Lie-type color algebras $\frak L$ admitting a quasi-multiplicative basis, with restrictions neither on the dimensions nor on the base field $\mathbb F$ and study its structure. If we write $\frak L = \mathbb V \oplus \mathbb W$ with $\mathbb V$ and $0 \neq \mathbb W$ linear subspaces, we say that a basis of homogeneous elements $\mathfrak{B} = \{e_i\}_{i \in I}$ of $\mathbb W$ is quasi-multiplicative if given $0 < k < n,$ for $i_1,\dots,i_k \in I$ and $σ\in \mathbb S_n$ satisfies $\langle e_{i_1}, \dots, e_{i_k}, \mathbb V, \dots, \mathbb V \rangle_σ \subset \mathbb{F}e_{j_σ}$ for some $j_σ \in I;$ the product of elements of the basis $\langle e_{i_1}, \dots, e_{i_n} \rangle$ belongs to $\mathbb{F}e_j$ for some $j \in I$ or to $\mathbb V$, and a similar condition is verified for the product $\langle \mathbb V, \dots,\mathbb V \rangle$. We state that if $\frak L$ admits a quasi-multiplicative basis then it decomposes as $\mathfrak{L} ={\mathcal U} \oplus (\sum\limits {\frak J}_{k})$ with any ${\frak J}_k$ a well described color gLt-ideal of $\frak L$ admitting also a quasi-multiplicative basis, and ${\mathcal U}$ a linear subspace of $\mathbb V$. Also the minimality of $\frak L$ is characterized in terms of the connections and it is shown that the above direct sum is by means of the family of its minimal color gLt-ideals, admitting each one a $μ$-quasi-multiplicative basis inherited by the one of $\frak L$.
Rockwall Slope Erosion in the Northwestern Himalaya
Creators: name: Orr, Elizabeth N.
name: Owen, Lewis A.
name: Saha, Sourav
name: Hammer, Sarah J.
name: Caffee, Marc W.
Publisher: name: FID GEO
Year: 2021

description: Rockwall slope erosion is an important component of alpine landscape evolution, yet the role of climate and tectonics in driving this erosion remains unclear. We define the distribution and magnitude of periglacial rockwall slope erosion across 12 catchments in Himachal Pradesh and Jammu and Kashmir in the Himalaya of northern India using cosmogenic 10Be concentrations in sediment from medial moraines. Beryllium‐10 concentrations range from 0.5 ± 0.04 × 104 to 260.0 ± 12.5 × 104 at/g SiO2, which yield erosion rates between 7.6 ± 1.0 and 0.02 ± 0.004 mm/a. Between ∼0.02 and ∼8 m of rockwall slope erosion would be possible in this setting across a single millennium, and >2 km when extrapolated for the Quaternary period. This erosion affects catchment sediment flux and glacier dynamics, and helps to establish the pace of topographic change at the headwaters of catchments. We combine rockwall erosion records from the Himalaya of Himachal Pradesh, Jammu and Kashmir, and Uttarakhand in India and Baltistan in Pakistan to create a regional erosion data set. Rockwall slope erosion rates progressively decrease with distance north from the Main Central Thrust and into the interior of the orogen. The distribution and magnitude of this erosion is most closely associated with records of Himalayan denudation and rock uplift, where the highest rates of change are recorded in the Greater Himalaya sequences. This suggests that tectonically driven uplift, rather than climate, is a first order control on patterns of rockwall slope erosion in the northwestern Himalaya. Precipitation and temperature would therefore come as secondary controls.
description: Key Points: Rates of periglacial rockwall slope erosion are defined for the northwestern Himalaya using cosmogenic 10Be concentrations in sediment from medial moraines. Tectonically driven uplift offers a first‐order control on patterns of rockwall slope erosion. Precipitation and temperature play secondary roles in this erosion.
description: National Geographic Society http://dx.doi.org/10.13039/100006363
description: Geological Society of America http://dx.doi.org/10.13039/100005720
description: University of Cincinnati, Graduate Student Governance Association
description: PRIME Laboratories, Purdue University
Machinery import, R&D spillover, and energy efficiency
Creators: name: Liu, Fengqin
name: Sim, Jae-Yeon
name: Edziah, Bless Kofi
name: Sun, Huaping
name: Sarkodie, Samuel Asumadu
name: Adom, Philip Kofi
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Physical Sciences not elsewhere classified
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Information Systems not elsewhere classified
subject: Science Policy

description: The gap in demand and supply of energy across Sub-Saharan African (SSA) countries has increased energy insecurity in the region. Therefore, power outages have become pervasive, causing unemployment and a decline in production output. Among the several energy-saving factors identified in the literature across developing economies, technological spillover driven by trade openness appears to be a prominent factor in improving energy efficiency. Thus, this study evaluates the impact of machinery imported from OECD and non-OECD countries and its corresponding research and development (R&D) spillover on energy efficiency performance in 18 SSA countries from 1995 to 2017. Using a stochastic energy distance function, we discover that aggregated data from OECD and non-OECD countries have no significant effect on energy efficiency performance across SSA countries. However, results from disaggregated data for OECD and non-OECD machinery imports show that OECD machinery imports improve energy efficiency contrary to non-OECD imports. Thus, technology spillover from OECD countries is advantageous for SSA countries to reduce long-term energy-based emissions. Furthermore, our results show that human capital has no significant effect on SSA energy efficiency. Consequently, the results possess some policy implications; for instance, policymakers responsible for promoting science and technology could increase investment in human capital development by developing technology and engineering expertise and increasing GDP allocation to R&D activities. For energy efficiency scores, we observe substantial differences in efficiency across SSA countries – implying potential improvements in energy efficiency across SSA countries.
The rotational evolution of young low mass stars
Creators: name: Bouvier, Jerome
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Star-disk interaction is thought to drive the angular momentum evolution of young stars. In this review, I present the latest results obtained on the rotational properties of low mass and very low mass pre-main sequence stars. I discuss the evidence for extremely efficient angular momentum removal over the first few Myr of pre-main sequence evolution and describe recent results that support an accretion-driven braking mechanism. Angular momentum evolution models are presented and their implication for accretion disk lifetimes discussed.
description: 10 pages
Know Your Mind: Adaptive Brain Signal Classification with Reinforced Attentive Convolutional Neural Networks
Creators: name: Zhang, Xiang
name: Yao, Lina
name: Wang, Xianzhi
name: Zhang, Wenjie
name: Zhang, Shuai
name: Liu, Yunhao
Publisher: name: arXiv
Year: 2018
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Electroencephalography (EEG) signals reflect activities on certain brain areas. Effective classification of time-varying EEG signals is still challenging. First, EEG signal processing and feature engineering are time-consuming and highly rely on expert knowledge. In addition, most existing studies focus on domain-specific classification algorithms which may not be applicable to other domains. Moreover, the EEG signal usually has a low signal-to-noise ratio and can be easily corrupted. In this regard, we propose a generic EEG signal classification framework that accommodates a wide range of applications to address the aforementioned issues. The proposed framework develops a reinforced selective attention model to automatically choose the distinctive information among the raw EEG signals. A convolutional mapping operation is employed to dynamically transform the selected information to an over-complete feature space, wherein implicit spatial dependency of EEG samples distribution is able to be uncovered. We demonstrate the effectiveness of the proposed framework using three representative scenarios: intention recognition with motor imagery EEG, person identification, and neurological diagnosis. Three widely used public datasets and a local dataset are used for our evaluation. The experiments show that our framework outperforms the state-of-the-art baselines and achieves the accuracy of more than 97% on all the datasets with low latency and good resilience of handling complex EEG signals across various domains. These results confirm the suitability of the proposed generic approach for a range of problems in the realm of Brain-Computer Interface applications.
description: 10 pages, Accepted by ICDM 2019 as full paper
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IX, Cart. 193 (11 H 78), f. 0066v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IX, Archives départementales de la Côte-d'Or, Cart. 193 (11 H 78), f. 0066v, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IX, Archives départementales de la Côte-d'Or, Cart. 193 (11 H 78), f. 0066v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Strong Lyman continuum emitting galaxies show intense CIV 1550 emission
Creators: name: Schaerer, D.
name: Izotov, Y. I.
name: Worseck, G.
name: Berg, D.
name: Chisholm, J.
name: Jaskot, A.
name: Nakajima, K.
name: Ravindranath, S.
name: Thuan, T. X.
name: Verhamme, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using the Space Telescope Imaging Spectrograph, we have obtained ultraviolet (UV) spectra from $\sim 1200$ to 2000 Å of known Lyman continuum (LyC) emitting galaxies at low redshift ($z \sim 0.3-0.4$) with varying absolute LyC escape fractions (fesc $\sim 0.01 - 0.72$). Our observations include in particular the galaxy J1243+4646, which has the highest known LyC escape fraction at low redshift. While all galaxies are known Lyman alpha emitters, we consistently detect an inventory of additional emission lines, including CIV 1550, HeII 1640, OIII] 1666, and CIII] 1909, whose origin is presumably essentially nebular. CIV 1550 emission is detected above 4 $σ$ in six out of eight galaxies, with equivalent widths of EW(CIV)$=12-15$ Ang for two galaxies, which exceeds the previously reported maximum emission in low-$z$ star-forming galaxies. We detect CIV 1550 emission in all LyC emitters with escape fractions fesc $> 0.1$ and find a tentative increase in the flux ratio CIV 1550/ CIII] 1909 with fesc. Based on the data, we propose a new criterion to select and classify strong leakers (galaxies with fesc $> 0.1$): CIV 1550/ CIII] 1909 $> 0.75$. Finally, we also find HeII 1640 emission in all the strong leakers with equivalent widths from 3 to 8 Ang rest frame. These are among the highest values observed in star-forming galaxies and are primarily due to a high rate of ionizing photon production. The nebular HeII 1640 emission of the strong LyC emitters does not require harder ionizing spectra at $>54$ eV compared to those of typical star-forming galaxies at similarly low metallicity.
description: 6 pages, 3 figures; Accepted for publication in A\&A Letters
Sedimentology of a Late Quaternary lacustrine record from the south‐eastern Carpathian Basin
Creators: name: Zeeden, Christian
name: Hambach, Ulrich
name: Klasen, Nicole
name: Fischer, Peter
name: Schulte, Philipp
name: Nett, Janina J.
name: Veres, Daniel
name: Obreht, Igor
name: Chu, Wei
name: Papadopoulou, Maria
name: Viehberg, Finn
name: Schäbitz, Frank
name: Gavrilov, Milivoj B.
name: MarkoviĆ, Slobodan B.
name: Vött, Andreas
name: Lehmkuhl, Frank
Publisher: name: FID GEO
Year: 2021

description: The Upper Pleistocene geoarchives in the south‐eastern Carpathian Basin are represented predominantly by loess–palaeosol records. In 2015, a 10 m sediment core composed of clay‐rich lacustrine sediments was recovered by vibracoring a dry lake basin located between the Vršac Mountains (Serbia) and the Banat Sands in the south‐eastern Carpathian Basin; a location relevant for placing regional archaeological results in a palaeoenvironmental context. Here, we present results from geoelectrical prospection and a lithostratigraphic interpretation of this sequence supported by a detailed granulometric study supplemented by ostracod analysis. An age model based on luminescence dating is discussed against sedimentological proxy data and its implication for palaeoenvironmental change. The cores show a stratigraphy of lighter ochre‐coloured and darker greyish sediment, related to the deposition of clay and silt trapped in an aquatic environment. Geophysical measurements show ~20 m thick lacustrine sediments. The grain‐size distributions including the variability in fine clay are indicative of a lacustrine environment. Fine particles were brought into the depositional environments by aquatic input and settled from suspension; also, direct dust input is constrained by grain‐size results. Riverine input and aeolian dust input interplayed at the locality.
description: Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659
description: Program IDEI_Proiecte de Cercetare Exploratorie
description: Serbian Ministry of Education, Science and Technological Development
Rubber friction on (apparently) smooth lubricated surfaces
Creators: name: Mofidi, M.
name: Prakash, B.
name: Persson, B. N. J.
name: Albohl, O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study rubber sliding friction on hard lubricated surfaces. We show that even if the hard surface appears smooth to the naked eye, it may exhibit short wavelength roughness, which may give the dominant contribution to rubber friction. That is, the observed sliding friction is mainly due to the viscoelastic deformations of the rubber by the substrate surface asperities. The presented results are of great importance for rubber sealing and other rubber applications involving (apparently) smooth surfaces.
description: 7 pages, 15 figures
Wie stand es nun wirklich um Bonpland? Kritische Überlegungen zu Frank Holls Untersuchung zu Bonpland, seiner Beziehung zu Alexander von Humboldt und der Darstellung der letzten Tage von Bonpland durch Avé-Lallemant.
Creators: name: Prüfer Leske, Irene
Publisher: name: HiN - Alexander von Humboldt im Netz. Internationale Zeitschrift für Humboldt-Studien
Year: 2021

description: Zusammenfassung Es handelt sich hier um eine Replik auf Frank Holls Artikel „La cooperación inolvidable de Aimé Bonpland y Alexander von Humboldt“, erschienen in der argentinischen Zeitschrift Bonplandia Volumen 29 Nr. 2 (2020). Es wird versucht, die von Holl gemachten schweren Vorwürfe gegenüber AvéLallemant, wie z. B. eine „tendenziöse Geschichtsschreibung“ zu praktizieren und Bonpland über Jahrhunderte hinweg schwer geschadet zu haben, nicht nur zu entschärfen, sondern auch in seinem eigenen Artikel als widersprüchlich aufzudecken. Die Ausführungen basieren vor allem auf den 7 Seiten, die Avé-Lallemant Bonpland und seinem Besuch bei demselben auf seiner Estancia Santa Ana 14 Tage vor seinem Tod in seinem zweibändigen Reisewerk „Reise durch Süd-Brasilien“ (1859) widmet, und einem kurzen Nachruf im 2. Band nach dessen Ableben im Jahre 1858. Resumen Se trata de una réplica al artículo de Frank Holl “La cooperación inolvidable de Aimé Bonpland y Alexander von Humboldt”, publicado en la revista argentina Bonplandia Volumen 29 nº 2 de 2020. Se intentará desmontar las graves acusaciones por parte de Holl frente a Avé-Lallemant de practicar la falsifi cación de hechos históricos y de perjudicar gravemente la imagen de Bonpland durante los siglos a nivel internacional desde su fallecimiento en 1858. Se intenta revelar las contradicciones que se presentan en el artículo mismo de Frank Holl. Los argumentos de la autora se basan sobre todo en la lectura del libro de Avé-Lallemant “Reise durch Süd-Brasilien” (1859) en dos tomos que incluye 7 páginas dedicadas a su visita a Bonpland en su estancia 15 días antes de morir y un breve comentario y valoración sobre el fallecido después de enterarse de su muerte. Résumé Il s’agit ici d’une réplique à l’article de Frank Holl « La coopération inoubliable d’Aimé Bonpland et Alexander von Humboldt », paru dans la revue argentine Bonplandia Volume 29 N°2 (2020). Nous essayerons de contester les graves accusations de la part de Holl à l’encontre de Avé-Lallemant de falsifi er des faits historiques et de nuire grièvement l’image de Bonpland pendant des siècles depuis sa mort en 1858, et de révéler les contradictions dans l’article de Frank Holl. Les arguments de l’auteur se basent sûrtout sur la lecture du livre de Avé-Lallement « Voyage à travers le Brésil du Sud » (1859) en deux volumes, qui inclut 7 pages dédiées à sa visite à Bonpland dans son « estancia » 15 jours avant de mourir y un bref commentaire et analyse sur le décédé peu après avoir pris connaissance de sa mort.
description: HiN - Alexander von Humboldt im Netz. Internationale Zeitschrift für Humboldt-Studien, Bd. 22 Nr. 43 (2021)
A way to get rid of cosmological constant and zero point energy problems of quantum fields through metric reversal symmetry
Creators: name: Erdem, Recai
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper a framework is introduced to remove the huge discrepancy between the empirical value of the cosmological constant and the contribution to the cosmological constant predicted from the vacuum energy of quantum fields. An extra dimensional space with metric reversal symmetry and $R^2$ gravity is considered to this end. The resulting 4-dimensional energy-momentum tensor (obtained after integration over extra dimensions) consists of terms that contain off-diagonally coupled pair of Kaluza-Klein modes. This, in turn, generically results in vanishing of the vacuum expectation value of the energy-momentum tensor for quantum fields, and offers a way to solve the problem of huge contribution of quantum fields to the vacuum energy density.
description: Presentation and content are improved, references are added. I would like to thank the anonymous referee for his valuable comments and suggestions to improve the paper
Effective Hamiltonian models of the cross-resonance gate
Creators: name: Magesan, Easwar
name: Gambetta, Jay M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Effective Hamiltonian methods are utilized to model the two-qubit cross-resonance gate for both the ideal two-qubit case and when higher levels are included. Analytic expressions are obtained in the qubit case and the higher-level model is solved both perturbatively and numerically with the solutions agreeing well in the weak drive limit. The methods are applied to parameters from recent experiments and accounting for classical cross-talk effects results in good agreement between theory and experimental results.
Pressure‐Driven Poiseuille Flow Inherited From Mesozoic Mantle Circulation Led to the Eocene Separation of Australia and Antarctica
Creators: name: Stotz, I. L.
name: Tassara, A.
name: Iaffaldano, G.
Publisher: name: FID GEO
Year: 2021

description: The separation between Australia and Antarctica occurred during the final stages of the break‐up of Pangea. Reconstructions of the rifting of the Australian plate away from Antarctica show fast spreading rates since Mid‐Eocene (45 Ma). These reconstructions can be used to understand and quantify the forces driving the Australia/Antarctica separation, and to test hypotheses on mechanisms that may be of shallow (i.e., lithosphere) or deep (i.e., mantle) origin. Analytical calculations indicate that plate‐boundary forces are highly unlikely to be a plausible candidate to explain such a separation. Thus, we use a recently developed global coupled models of mantle and lithosphere dynamics, here we show that this event, whose kinematics are reproduced in our models within the bounds of the reconstruction uncertainties, owes to a significant degree to the pressure‐driven asthenospheric Poiseuille flow associated with the mantle buoyancy field inherited from viscous circulation history throughout the Mesozoic. On the contrary, in simulations when such a buoyancy field is replaced by another one resulting from a random distribution of mantle temperature–thus not representative of Earth’s mantle circulation history–the rapid northward motion of Australia does not occur. Similarly, suppressing contemporaneous plate‐boundary processes (i.e., subduction of the Pacific ridge at the Aleutians and healing of the India‐Australia ridge) from our models does not have a noticeable effect on the Australia‐Antarctica kinematics. Thus, a pressure‐driven Poiseuille mantle flow must be considered, at least in this example and possible elsewhere, as a main driver of plate tectonics.
description: Key Points: Reconstructions of the rifting of the Australian plate away from Antarctica shows fast spreading rates since Mid‐Eocene (45 Ma). Analyzed mechanisms to separate the Australian plate from Antarctica using coupled global models of mantle and lithosphere dynamics. Results indicate that the separation between the Australian and Antarctica plate was driven by an asthenospheric pressure Poiseuille flow.
description: Københavns Universitet http://dx.doi.org/10.13039/501100001734
Additional file 2: of Gene length corrected trimmed mean of M-values (GeTMM) processing of RNA-seq data performs similarly in intersample analyses while improving intrasample comparisons
Creators: name: Smid, Marcel
name: Braak, Robert Coebergh Van Den
name: Werken, Harmen Van De
name: Riet, Job Van
name: Galen, Anne Van
name: Weerd, Vanja De
name: Vlugt-Daane, Michelle Van Der
name: Bril, Sandra
name: Lalmahomed, Zarina
name: Wigard Kloosterman
name: Wilting, Saskia
name: Foekens, John
name: IJzermans, Jan
name: Martens, John
name: Anieta Sieuwerts
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Marine Biology
subject: Science Policy

description: Correlation RIN BioAnalyzer vs MultiNA. RIN values as measured by the Bioanalyzer (Agilent) were compared to the 28S/total concentration as measure by the MultiNA in a training set of 60 cases (A). The resulting trend line was validated in an independent cohort (B) of 73 cases. (PDF 199 kb)
Wind properties of Milky Way and SMC massive stars: empirical Z dependence from CMFGEN models
Creators: name: Marcolino, W. L. F.
name: Bouret, J. -C.
name: Rocha-Pinto, H. J.
name: Bernini-Peron, M.
name: Vink, J. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Detailed knowledge about stellar winds and evolution at different metallicities is crucial for understanding stellar populations and feedback in the Local Group of galaxies and beyond. Despite efforts in the literature, we still lack a comprehensive, empirical view of the dependence of wind properties on metallicity ($Z$). Here, we investigate the winds of O and B stars in the Milky Way (MW) and Small Magellanic Cloud (SMC). We gathered a sample of 96 stars analyzed by means of the NLTE code CMFGEN. We explored their wind strengths and terminal velocities to address the $Z$ dependence, over a large luminosity range. The empirical wind-luminosity relation (WLR) obtained updates and extends previous results in the literature. It reveals a luminosity and $Z$ dependence, in agreement with the radiatively driven wind theory. For bright objects ($\log L/L_\odot \gtrsim 5.4$), we infer that $\dot{M} \sim Z^{0.5-0.8}$. However, this dependence seems to get weaker or vanish at lower luminosities. The analysis of the terminal velocities suggests a shallow $Z^n$ dependence, with $n \sim 0.1-0.2$, but it should be confirmed with a larger sample and more accurate $V_{\infty}$ determinations. Recent results on SMC stars based on the PoWR code support our inferred WLR. On the other hand, recent bow-shocks measurements stand mostly above our derived WLR. Theoretical calculations of the WLR are not precise, specially at low $L$, where the results scatter. Deviations between our results and recent predictions are identified to be due to the weak wind problem and the extreme terminal velocities predicted by the models. The Z dependence suggested by our analysis deserves further investigations, given its astrophysical implications.
description: 17 Pages, 10 Figures and 3 Tables, accepted for publication in MNRAS
Testing Born-Infeld electrodynamics in waveguides
Creators: name: Ferraro, Rafael
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Waveguides can be employed to test non-linear effects in electrodynamics. We solve Born-Infeld equations for TE waves in a rectangular waveguide. We show that the energy velocity acquires a dependence on the amplitude, and harmonic components appear as a consequence of the non-linear behavior.
description: 3 pages. To appear in PRL
Christian Gottfried Ehrenberg und die Biogeographie: Die russisch-sibirische Reise mit Alexander von Humboldt (1829)
Creators: name: Päßler, Ulrich
Publisher: name: HiN - Alexander von Humboldt im Netz. Internationale Zeitschrift für Humboldt-Studien
Year: 2021

description: Abstract The Russian-Siberian journey, carried out with Alexander von Humboldt and Gustav Rose in 1829 coincided with a decisive phase in Christian Gottfried Ehrenberg’s scientific career. His field diary and the drawings he made on the trip document his intensified focus on the study of microorganisms. The numerous observations on plant and animal geography show how Ehrenberg tested a combination of micro- and macro-perspectives that would shape his research on infusoria in the following decades: In addition to the task of classification at the microscope, Ehrenberg carried out worldwide comparative research on the distribution of microorganisms. Resumen El viaje a Rusia y Siberia de Christian Gottfried Ehrenberg en compañía de Alexander von Humboldt y Gustav Rose, realizado en 1829, coincidió con una fase decisiva en su carrera científica. Su diario y los dibujos realizados durante el viaje documentan una especial atención al estudio de los microorganismos. Las numerosas observaciones sobre la geografía de las plantas y los animales muestran cómo Ehrenberg ensayó una combinación de micro y macroperspectivas que daría forma a sus investigaciones sobre los infusorios en las décadas siguientes. Además de su labor de clasificación al microscopio, Ehrenberg llevó a cabo una investigación comparativa a nivel mundial sobre la distribución de los microorganismos. Résumé Le voyage en Russie et en Sibérie entrepris en 1829 avec Alexander von Humboldt et Gustav Rose coïncide avec une phase décisive de la carrière scientifique de Christian Gottfried Ehrenberg. Son carnet de voyage ainsi que les dessins réalisés par lui lors du voyage témoignent de l’intensification de son intérêt pour l’étude des microorganismes. Les nombreuses observations sur la géographie des plantes et des animaux font preuve de la façon dont Ehrenberg a testé d’adopter une combinaison de micro- et de macro-perspectives qui ont façonné ses recherches sur les infusoires dans les décennies suivantes: Outre la tâche de classification au microscope, Ehrenberg a mené des recherches comparatives mondiales sur la distribution et la dispersion des microorganismes.
description: HiN - Alexander von Humboldt im Netz. Internationale Zeitschrift für Humboldt-Studien, Bd. 22 Nr. 42 (2021): Christian Gottfried Ehrenberg: Lebensbilder eines Naturforschers. Themenheft und Katalog zur Ausstellung
Fast, Autonomous Flight in GPS-Denied and Cluttered Environments
Creators: name: Mohta, Kartik
name: Watterson, Michael
name: Mulgaonkar, Yash
name: Liu, Sikang
name: Qu, Chao
name: Makineni, Anurag
name: Saulnier, Kelsey
name: Sun, Ke
name: Zhu, Alex
name: Delmerico, Jeffrey
name: Karydis, Konstantinos
name: Atanasov, Nikolay
name: Loianno, Giuseppe
name: Scaramuzza, Davide
name: Daniilidis, Kostas
name: Taylor, Camillo Jose
name: Kumar, Vijay
Publisher: name: arXiv
Year: 2017
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: One of the most challenging tasks for a flying robot is to autonomously navigate between target locations quickly and reliably while avoiding obstacles in its path, and with little to no a-priori knowledge of the operating environment. This challenge is addressed in the present paper. We describe the system design and software architecture of our proposed solution, and showcase how all the distinct components can be integrated to enable smooth robot operation. We provide critical insight on hardware and software component selection and development, and present results from extensive experimental testing in real-world warehouse environments. Experimental testing reveals that our proposed solution can deliver fast and robust aerial robot autonomous navigation in cluttered, GPS-denied environments.
description: Pre-peer reviewed version of the article accepted in Journal of Field Robotics
Space Tourism
Creators: name: Ramakant Gautam
name: Mukesh Sharma
Publisher: name: Zenodo
Year: 2018

description: The concept of space tourism, as soon as limited to the imaginations of technology fiction fans, is swiftly transitioning right into a tangible truth. This summary encapsulates an in-depth exploration of the burgeoning subject of space tourism, delineating its evolution, current landscape, demanding situations, and the promising prospects it holds for the future. The research investigates the transformative adventure of space tourism, navigating thru the historical trajectory from conceptualization to the emergence of personal area organizations, and the innovations propelling this nascent enterprise in the direction of accessibility for private individuals.Analyzing the present day landscape of commercial spaceflight ventures led by way of pioneering entities like SpaceX, Blue Origin, and Virgin Galactic, this look at delves into their bold tasks to democratize access to area. It scrutinizes suborbital tourism endeavors, probing their marketplace dynamics, pricing techniques, and the experiential aspects that promise vacationers fleeting encounters with the cosmos.