bluuebunny/crossref_metadata_2025 huggingface dataset:
ALMA Spectral Survey of an Eruptive Young Star, V883 Ori (ASSAY). I. What Triggered the Current Episode of Eruption?
Authors: Lee Jeong-Eun , Kim Chul-Hwan , Lee Seokho , Lee Seonjae , Baek Giseon , Yun Hyeong-Sik , Aikawa Yuri , Johnstone Doug , Herczeg Gregory J. , Cieza Lucas
Published: April 2024

An unbiased spectral survey of V883 Ori, an eruptive young star, was carried out with the Atacama Large Millimeter/submillimeter Array in Band 6. The detected line emission from various molecules reveals morphological/kinematical features in both the Keplerian disk and the infalling envelope. A direct infall signature, redshifted absorption against the continuum, has been detected in CO, HCO+, HCN, HNC, and H2CO. HCO+ and SO show large armlike structures that probably connect the infalling envelope to the disk. HCN and H2CO reveal a distinct boundary between the inner and outer disks and tentative spiral structures connecting the outer disk to the inner disk. HNC shows a large central emission hole (r ∼ 0.″3) due to its chemical conversion to HCN at high temperatures. HDO emission, a direct tracer of the water sublimation region, has been detected in the disk. Molecular emission from complex organic molecules is confined within the HDO emission boundary, and HCO+ has an emission hole in its distribution due to its destruction by water. Together, these features suggest that the current episode of eruption in V883 Ori may be triggered by the infall from the envelope to the outer disk, generating a spiral wave that propagates inward and greatly enhances the accretion onto the central star.
Discovery of an Accretion Streamer and a Slow Wide-angle Outflow around FU Orionis
Authors: Hales A. S. , Gupta A. , Ruíz-Rodríguez D. , Williams J. P. , Pérez S. , Cieza L. , González-Ruilova C. , Pineda J. E. , Santamaría-Miranda A. , Tobin J. , Weber P. , Zhu Z. , Zurlo A.
Published: April 2024

We present Atacama Large Millimeter/submillimeter Array 12-m, 7-m, and Total Power Array observations of the FU Orionis outbursting system, covering spatial scales ranging from 160 to 25,000 au. The high-resolution interferometric data reveal an elongated 12CO(2–1) feature previously observed at lower resolution in 12CO(3–2). Kinematic modeling indicates that this feature can be interpreted as an accretion streamer feeding the binary system. The mass infall rate provided by the streamer is significantly lower than the typical stellar accretion rates (even in quiescent states), suggesting that this streamer alone is not massive enough to sustain the enhanced accretion rates characteristic of the outbursting class prototype. The observed streamer may not be directly linked to the current outburst, but rather a remnant of a previous, more massive streamer that may have contributed enough to the disk mass to render it unstable and trigger the FU Orionis outburst. The new data detect, for the first time, a vast, slow-moving carbon monoxide molecular outflow emerging from this object. To accurately assess the outflow properties (mass, momentum, and kinetic energy), we employ 13CO(2–1) data to correct for optical depth effects. The analysis indicates that the outflow corresponds to swept-up material not associated with the current outburst, similar to the slow molecular outflows observed around other FUor and Class I protostellar objects.
A Survey of Coronal Mass Ejections Measured In Situ by Parker Solar Probe during 2018–2022
Authors: Salman Tarik Mohammad , Nieves-Chinchilla Teresa , Jian Lan K. , Lugaz Noé , Carcaboso Fernando , Davies Emma E. , Collado-Vega Yaireska M.
Published: April 2024

We present a statistical investigation of the radial evolution of 28 interplanetary coronal mass ejections (ICMEs), measured in situ by the Parker Solar Probe spacecraft from 2018 October to 2022 August. First, by analyzing the radial distribution of ICME classification based on magnetic hodograms, we find that coherent configurations are more likely to be observed close to the Sun. By contrast, more complex configurations are observed farther out. We also notice that the post-ICME magnetic field is more impacted following an ICME passage at larger heliocentric distances. Second, with a multilinear robust regression, we derive a slower magnetic ejecta (ME) expansion rate within 1 au compared to previous statistical estimates. Then, investigating the magnetic field fluctuations within ICME sheaths, we see that these fluctuations are strongly coupled to the relative magnetic field strength gradient from the upstream solar wind to the ME. Third, we identify ME expansion as an important factor in the formation of sheaths. Finally, we determine the distortion parameter (DiP), which is a measure of magnetic field asymmetry in an ME. We discover lower overall asymmetries within MEs. We reveal that even for expanding MEs, the time duration over which an ME is sampled does not correlate with DiP values, indicating that the aging effect is not the sole contributor to the observed ME asymmetries.
Disk Wind Feedback from High-mass Protostars. III. Synthetic CO Line Emission
Authors: Xu Duo , Tan Jonathan C. , Staff Jan E. , Ramsey Jon P. , Zhang Yichen , Tanaka Kei E. I.
Published: April 2024

To test theoretical models of massive star formation it is important to compare their predictions with observed systems. To this end, we conduct CO molecular line radiative transfer post-processing of 3D magnetohydrodynamic simulations of various stages in the evolutionary sequence of a massive protostellar core, including its infall envelope and disk wind outflow. Synthetic position–position–velocity cubes of various transitions of 12CO, 13CO, and C18O emission are generated. We also carry out simulated Atacama Large Millimeter/submillimeter Array (ALMA) observations of this emission. We compare the mass, momentum, and kinetic energy estimates obtained from molecular lines to the true values, finding that the mass and momentum estimates can have uncertainties of up to a factor of 4. However, the kinetic energy estimated from molecular lines is more significantly underestimated. Additionally, we compare the mass outflow rate and momentum outflow rate obtained from the synthetic spectra with the true values. Finally, we compare the synthetic spectra with real examples of ALMA-observed protostars and determine the best-fitting protostellar masses and outflow inclination angles. We then calculate the mass outflow rate and momentum outflow rate for these sources, finding that both rates agree with theoretical protostellar evolutionary tracks.
Morphology and Kinematics of the Gas in M51: How Interaction with NGC 5195 Has Molded the Structure of Its Arms
Authors: Font Joan , Beckman John E. , Epinat Benoît , Dobbs Clare L. , Querejeta Miguel
Published: April 2024

The Whirlpool Galaxy is a well-studied grand design galaxy with two major spiral arms, and a large satellite NGC 5195. The arms both show long uniform sections with perturbations (“kinks” or sharp turns) in specific regions. Comparing the two arms shows a small radial offset between the main kinked regions. We analyzed the morphology and also the velocity field in the disk of M51 using kinematic maps based on Hα and CO line emission. These sample complementary radial ranges, with the CO map covering the central zone and the Hα map extending to cover the outer zone. We looked for indicators of density wave resonance, zones where radial flows of gas in the disk plane reverse their sign. These were present in both velocity maps; their 2D localization placed them along or closely parallel to the spiral arms, at a set of well-defined galactocentric radii, and notably more concentrated along the southern, stronger arm. The results can be well interpreted quantitatively, using a numerical model of the interaction of M51 and NGC 5195 in which the satellite has made two relatively recent passes through the disk plane of M51. During the first pass the pair of dominant spiral arms was stimulated, and during the second pass the strong kinks in both arms were formed at about the same time. The second interaction is particularly well characterized, because the timescale corresponding to the production of the kinks and the recovery of the original pitch angle is identical for the two arms.
Mining the GALAH Data. I. Study of Five Super Lithium-rich Metal-poor Giants
Authors: Susmitha Antony , Mallick Anohita , Reddy Bacham E.
Published: April 2024

The presence of a large amount of Li in giants is still a mystery. Most of the super Li-rich (SLR) giants reported in recent studies are in the solar metallicity regime. Here, we study the five metal-poor SLRs from the Galactic Archeology with HERMES Data Release 3, with their [Fe/H] ranging from −1.35 to −2.38 with lithium abundance of A(Li) ≥ 3.4 dex. The asteroseismic analysis reveals that none are on the red giant branch. The average period spacing (ΔP ) values indicate giants are in the core He-burning phase. All of them are low-mass giants (M < 1.5 M
⊙). Their location in the Hertzsprung–Russell diagram suggests one of them is in the red clump (RC) phase, and interestingly, the other four are much brighter and coincide with the early asymptotic giant branch phase. The analysis of the abundance reveals that C, O, Na, Ba, and Eu are normal in giants of respective metallicities and evolutionary phases. Further, we did not find any strong evidence of the presence of dust in the form of infrared excess or binarity from the available radial velocity data. We discuss a few scenarios for the existence of SLRs at higher luminosity, including past merger events. Our findings will help in understanding the production and evolution of Li among giants, in particular, during the RC phase and the post-RC phase.
Inferring Properties of Dark Galactic Halos Using Strongly Lensed Gravitational Waves
Authors: Seo Eungwang , Li Tjonnie G. F. , Hendry Martin A.
Published: April 2024

Gravitational waves (GWs) can be deflected, similarly to electromagnetic (EM) waves, by massive objects through the phenomenon of gravitational lensing. The importance of GW lensing for GW astronomy is becoming increasingly apparent in the GW detection era, in which nearly 100 events have already been detected. As current ground-based interferometers reach their design sensitivities, it is anticipated that these detectors may observe a few GW signals that are strongly lensed by the dark halos of intervening galaxies or galaxy clusters. Analyzing the strong lensing effects on GW signals is, thus, becoming important to understand the lens’ properties and correctly infer the intrinsic GW source parameters. However, one cannot accurately infer lens parameters for complex lens models with only GW observations because there are strong degeneracies between the parameters of lensed waveforms. In this paper, we discuss how to conduct parameter estimation of strongly lensed GW signals and infer the lens parameters using additional EM information, including the lens galaxy’s axis ratio and the GW source-hosting galaxy’s lensed images. We find that for simple spherically symmetric lens models, the lens parameters can be well recovered using only GW information. On the other hand, recovering the lens parameters requires systems in which four or more GW images are detected with additional EM observations for nonaxially symmetric lens models. Combinations of GW and EM observations can further improve the inference of the lens parameters.
NuSTAR Observations of Candidate Subparsec Binary Supermassive Black Holes
Authors: Saade M. Lynne , Brightman Murray , Stern Daniel , Connor Thomas , Djorgovski S. G. , D’Orazio Daniel J. , Ford K. E. S. , Graham Matthew J. , Haiman Zoltán , Jun Hyunsung D. , Kammoun Elias , Kraft Ralph P. , McKernan Barry , Vikhlinin Alexei , Walton Dominic J.
Published: April 2024

We present an analysis of NuSTAR X-ray observations of three active galactic nuclei (AGN) that were identified as candidate subparsec binary supermassive black hole (SMBH) systems in the Catalina Real-Time Transient Survey based on apparent periodicity in their optical light curves. Simulations predict that close-separation accreting SMBH binaries will have different X-ray spectra than single accreting SMBHs. We previously observed these AGN with Chandra and found no differences between their low-energy X-ray properties and the larger AGN population. However, some models predict differences to be more prominent at energies higher than probed by Chandra. We find that even at the higher energies probed by NuSTAR, the spectra of these AGN are indistinguishable from the larger AGN population. This could rule out models predicting large differences in the X-ray spectra in the NuSTAR bands. Alternatively, it might mean that these three AGN are not binary SMBHs.
Morphology and Mach Number Dependence of Subsonic Bondi–Hoyle Accretion
Authors: Prust Logan J. , Glanz Hila , Bildsten Lars , Perets Hagai B. , Röpke Friedrich K.
Published: April 2024

We carry out three-dimensional computations of the accretion rate onto an object (of size R
sink and mass m) as it moves through a uniform medium at a subsonic speed v
∞. The object is treated as a fully absorbing boundary (e.g., a black hole). In contrast to early conjectures, we show that for an accretor with

R

sink

≪

R

A

=
2
Gm

/

v

∞

2

in a gaseous medium with adiabatic index γ = 5/3, the accretion rate is independent of Mach number and is determined only by m and the gas entropy. Our numerical simulations are conducted using two different numerical schemes via the Athena++ and Arepo hydrodynamics solvers, which reach nearly identical steady-state solutions. We find that pressure gradients generated by the isentropic compression of the flow near the accretor are sufficient to suspend much of the surrounding gas in a near-hydrostatic equilibrium, just as predicted from the spherical Bondi–Hoyle calculation. Indeed, the accretion rates for steady flow match the Bondi–Hoyle rate, and are indicative of isentropic flow for subsonic motion where no shocks occur. We also find that the accretion drag may be predicted using the Safronov number, Θ = R

A
/R
sink, and is much less than the dynamical friction for sufficiently small accretors (R
sink ≪ R

A
).
The Temperature and Density of a Solar Flare Kernel Measured from Extreme-ultraviolet Lines of O iv
Authors: Young Peter R.
Published: April 2024

Previously unexplored diagnostics of O iv in the extreme-ultraviolet region 260–280 Å are used to derive a temperature and density for a solar flare kernel observed on 2012 March 9 with the Extreme-ultraviolet Imaging Spectrometer on the Hinode satellite. Seven lines from the 2s2p
2–2s2p3s transition array between 271.99 and 272.31 Å are both temperature- and density-sensitive relative to the line at 279.93 Å. The temperature, T, is constrained with the λ268.02/λ279.93 ratio, giving a value of

log
(
T

/

K
)
=
5.10
±
0.03

. The ratio λ272.13/λ279.93 then yields an electron number density, N
e, of

log
(

N

e

/

cm

−
3

)
=
12.52

with a lower limit of 11.90 and an upper limit of 14.40. The O iv emitting volume is estimated to be 0.″4 (300 km) across. Additional O iv lines at 196, 207, and 260 Å are consistent with the derived temperature and density but have larger uncertainties from the radiometric calibration and blending. Density diagnostics of O v and Mg vii from the same spectrum are consistent with a constant pressure of 1017.0 K cm−3 through the transition region. The temperature derived from O iv supports recent results that O iv is formed around 0.10 dex lower at high densities compared to standard zero-density ionization balance calculations.
Contribution of Neutrino-dominated Accretion Flows to the Cosmic MeV Neutrino Background
Authors: Wei Yun-Feng , Liu Tong , Song Cui-Ying
Published: April 2024

Neutrino-dominated accretion flows (NDAFs) are one of the important MeV neutrino sources and significantly contribute to the cosmic diffuse neutrino background. In this paper, we investigate the spectrum of the diffuse NDAF neutrino background (DNNB) by fully considering the effects of the progenitor properties and initial explosion energies based on core-collapse supernova (CCSN) simulations, and estimate the detectable event rate by the Super-Kamiokande detector. We find that the predicted background neutrino flux is mainly determined by the typical CCSN initial explosion energy and progenitor metallicity. For the optimistic cases, in which the typical initial explosion energy is low, the diffuse flux of the DNNB is comparable to the diffuse supernova neutrino background, which might be detected by upcoming larger neutrino detectors, such as Hyper-Kamiokande, the Jiangmen Underground Neutrino Observatory, and the Deep Underground Neutrino Experiment. Moreover, the strong outflows from NDAFs could dramatically decrease their contribution to the neutrino background.
Galaxy Spin Transition Driven by the Misalignments between the Protogalaxy Inertia and Initial Tidal Tensors
Authors: Moon Jun-Sung , Lee Jounghun
Published: April 2024

A numerical detection of the τ-driven transition of galaxy spins is presented, where τ is the degree of misalignment between the initial tidal field and protogalaxy inertia tensors. Analyzing the data from the IllustrisTNG300-1 simulations, we first measure the values of τ at the protogalactic sites found by tracing the constituents of the galactic halos in the mass range of

10.5
≤
log

M

h

/

(

h

−
1

M

⊙

)

≤
13

back to the initial stage, z

i
= 127. The probability density functions of τ are shown to be well modeled by the Γ-distributions, whose shape and scale parameters turn out to have universal values on a certain critical scale. Then, we investigate how the strength and tendency of the galaxy spin alignments with the principal axes of the local tidal fields depend on the initial condition, τ. It is found that on a scale lower than the critical one, the galaxy spin transition occurs at two different thresholds from the major to intermediate and from the intermediate to minor principal axes of the local tidal fields, respectively. Noting that the τ-dependent spin transition supersedes the strength of the previously found mass-dependent, morphology-dependent, and radius-dependent counterparts, we suggest that τ should be the key driver of all types of galaxy spin transitions and that the present galaxy spins are indeed excellent fossil records of their origin.
A Study of Particle Acceleration in Blazar Jets
Authors: Xiao Hubing , Yang Wenxin , Zhang Yutao , Zhang Shaohua , Fan Junhui , Fu Liping , Yang Jianghe
Published: April 2024

The particle acceleration of blazar jets is crucial to high-energy astrophysics, yet the acceleration mechanism division in blazar subclasses and the underlying nature of these mechanisms remain elusive. In this work, we utilized the synchrotron spectral information (synchrotron peak frequency,

log

ν

sy

, and corresponding curvature, b
sy) of 2705 blazars from the literature and studied the subject of particle acceleration in blazar jets by analyzing the correlation between

log

ν

sy

and 1/b
sy. Our results suggested that the entire sample follows an energy-dependent probability acceleration (EDPA). Specifically, the low inverse Compton peak sources (LCPs) follow the mechanism of fluctuations of fractional gain acceleration (FFGA), while the high inverse Compton peak sources (HCPs) follow an acceleration mechanism of EDPA. Our results indicated that the separation between LCPs and HCPs results from the electron peak Lorentz factor (γ
p), and the differentiation should originate from different acceleration mechanisms. Moreover, our study revealed a transition in the acceleration mechanism from FFGA to EDPA around

log

ν

sy

∼
15

through a detailed analysis of binned-

log

ν

sy

. The mechanism of FFGA dominates the particle acceleration in LCP jets because of stronger jets and the EDPA dominates the particle energy gain in the HCPs due to a more efficient acceleration process.
Design and Performance of a 30/40 GHz Diplexed Focal Plane for the BICEP Array
Authors: Shiu Corwin , Soliman Ahmed , O’Brient Roger , Steinbach Bryan , Bock James J. , Frez Clifford F. , Jones William C. , Megerian Krikor. G. , Moncelsi Lorenzo , Schillaci Alessandro , Turner Anthony D. , Weber Alexis C. , Zhang Cheng , Zhang Silvia
Published: April 2024

We demonstrate a wideband diplexed focal plane suitable for observing low-frequency foregrounds that are important for cosmic microwave background polarimetry. The antenna elements are composed of slotted bowtie antennas with 60% bandwidth that can be partitioned into two bands. Each pixel is composed of two interleaved 12 × 12 pairs of linearly polarized antenna elements forming a phased array, designed to synthesize a symmetric beam with no need for focusing optics. The signal from each antenna element is captured in-phase and uniformly weighted by a microstrip summing tree. The antenna signal is diplexed into two bands through the use of two complementary, six-pole Butterworth filters. This filter architecture ensures a contiguous impedance match at all frequencies, and thereby achieves minimal reflection loss between both bands. Subsequently, out-of-band rejection is increased with a bandpass filter and the signal is then deposited on a transition-edge sensor bolometer island. We demonstrate the performance of this focal plane with two distinct bands, 30 and 40 GHz, each with a bandwidth of ∼20 and 15 GHz, respectively. The unequal bandwidths between the two bands are caused by an unintentional shift in diplexer frequency from its design values. The end-to-end optical efficiency of these detectors is relatively modest, at 20%–30%, with an efficiency loss due to an unknown impedance mismatch in the summing tree. Far-field beam maps show good optical characteristics, with edge pixels having no more than ∼5% ellipticity and ∼10%–15% peak-to-peak differences for A–B polarization pairs.
Spin Doctors: How to Diagnose a Hierarchical Merger Origin
Authors: Payne Ethan , Kremer Kyle , Zevin Michael
Published: April 2024

Gravitational-wave observations provide the unique opportunity of studying black hole formation channels and histories—but only if we can identify their origin. One such formation mechanism is the dynamical synthesis of black hole binaries in dense stellar systems. Given the expected isotropic distribution of component spins of binary black holes in gas-free dynamical environments, the presence of antialigned or in-plane spins with respect to the orbital angular momentum is considered a tell-tale sign of a merger’s dynamical origin. Even in the scenario where birth spins of black holes are low, hierarchical mergers attain large component spins due to the orbital angular momentum of the prior merger. However, measuring such spin configurations is difficult. Here, we quantify the efficacy of the spin parameters encoding aligned-spin (χ
eff) and in-plane spin (χ

p
) at classifying such hierarchical systems. Using Monte Carlo cluster simulations to generate a realistic distribution of hierarchical merger parameters from globular clusters, we can infer mergers’ χ
eff and χ

p
. The cluster populations are simulated using Advanced LIGO-Virgo sensitivity during the detector network’s third observing period and projections for design sensitivity. Using a “likelihood-ratio”-based statistic, we find that ∼2% of the recovered population by the current gravitational-wave detector network has a statistically significant χ

p
measurement, whereas no χ
eff measurement was capable of confidently determining a system to be antialigned with the orbital angular momentum at current detector sensitivities. These results indicate that measuring spin-precession through χ

p
is a more detectable signature of hierarchical mergers and dynamical formation than antialigned spins.
Avaliação da alocação das ambulâncias do corpo de bombeiros no interior do estado do Rio de Janeiro
Authors: Duarte Leonardo , Shimoda Eduardo , Silva Fabio Freitas , Shimoya Aldo , Matias Italo
Published: April 2024

Segundo o Anuário do Corpo de Bombeiros Militar do Estado do Rio de Janeiro (CBMERJ, 2015), foram realizados 220.219 atendimentos pelas ambulâncias da corporação, sendo que um terço deles ocorreu nos municípios do interior do estado, onde existem 67 unidades do CBMERJ que alocam 55 ambulâncias. O tempo de resposta entre a solicitação do atendimento e a chegada da ambulância ao local do evento se caracteriza como um fator determinante no índice de sobrevivência do paciente. Nesse estudo, consideramos o modelo das p-medianas com o objetivo de avaliar a alocação das ambulâncias nas unidades do CBMERJ situadas no interior do estado e propor uma realocação dessas viaturas, visando diminuir a distância média e o tempo de resposta, aumentando a eficácia do atendimento pré-hospitalar prestado. Foram coletados dados da localização geográfica das unidades do CBMERJ no interior e a alocação de ambulância nessas unidades. Verificou-se, com base nos dados obtidos demonstrados, que a realocação promoveu uma redução nos tempos de deslocamento e aumentou o número de municípios que alcançaram o tempo resposta de 14,5 minutos. Esse valor foi considerado satisfatório visto que se aproxima do tempo de 8 minutos, valor mundialmente aceito para deslocamento de viatura em atendimento de emergência
Ecossistemas empreendedores: dinâmica e avaliação
Authors: Pelizza Vier Machado Hilka , Oro Ieda Margarete , Prado Gimenez Fernando Antonio , Ignácio Junior Edmundo
Published: April 2024

O objetivo desta pesquisa é apresentar os elementos associados à dinâmica de um ecossistema empreendedor (EE), examinando-os a partir de elementos e atividades associadas à sua implementação, operação e mecanismos de avaliação. Por meio de revisão de literatura na base de dados Web of Science, foram selecionados textos publicados sobre o tema e foi realizada uma categorização que propiciou uma sistematização da dinâmica de EE, não apontada em estudos anteriores de forma integrada. Considerando que EE são reconhecidos como elementos centrais em processos de desenvolvimento socioeconômico das regiões, este estudo, propicia aos seus leitores – gestores públicos; de universidades; formuladores de políticas; estudiosos – a identificação de conjunto de elementos que tem o potencial de orientar e nortear os esforços para colocar-se em prática ações que resultem na criação de um EE ou na análise e melhorias em EE existentes. Diferentemente de estudos prévios, este estudo traz uma visão integrada e processual dos EE.
Oficinas de grafismo Karajá em bonecas de pano: um olhar para a cultura indígena em projeto de extensão universitária
Authors: Munaretto Elisangela Christiane de Pinheiro Leite , Silva Maclovia Corrêa da
Published: April 2024

Debatemos neste artigo a modalidade oficina como proposta do projeto de extensão: “diversidade cultural indígena na sociedade brasileira”. Problematizamos as questões de reconhecimento da diversidade cultura dos povos originários brasileiros. Com o propósito de ampliar os saberes referentes aos povos originários para aqueles/aquelas que visitam o Museu de Arte Indígena (MAI), situado na cidade de Curitiba-PR, e estreitar possibilidades educativas ofertamos, oficinas de grafismo Karajá em bonecas de pano, feitas com resíduos têxteis. Dessa forma, nos pautamos em aspectos metodológicos da pesquisa-ação, dentre eles as abordagens qualitativas, interpretando crenças, valores, sentimentos e percepções, e as oficinas, que se transformaram no caminho oportuno de ação no campo. Assim sendo, utilizamos, para registro das ações, o diário de campo composto por falas, reações e imagens fotográficas dos participantes, que foram essenciais para compreender as dinâmicas de contextos que vivem os povos originários no Brasil. O centro das atenções esteve na interpretação dos participantes, na formação de experiências e na potência das oficinas como parte da educação patrimonial em vias de reconhecimento da cultura indígena. Neste caminhar de muitas vias, em que a pesquisa, as pesquisadoras e os participantes travaram diálogos e interagiram, grafar as bonecas inspiradas na cultura karajá permitiu a construção coletiva de universos simbólicos deste grupo específico de indígenas.
As materialidades da cor no ensino de artes
Authors: Campagnaro Yuri Gabriel , Silveira Luciana Martha
Published: April 2024

Este artigo versa sobre a importância das materialidades das cores no ensino de artes. O objetivo do trabalho é entender como as materialidades em questão têm consequências possivelmente problemáticas, mas que podem ser disputadas por experiências de comunicação entre o conhecimento e prática acadêmicos e a sociedade. Cores são importantes para a sociedade e especialmente no ensino. Debates na arte contemporânea chamam a atenção para suas materialidades, que passam por suas infraestruturais objetivas e também a seus contextos e conteúdos. Esses elementos, associados a aspectos técnicos da produção de tintas e pigmentos, podem ter consequências problemáticas quanto ao acesso aos materiais cromáticos. Apresentamos o caso de lápis de cor que normaliza o tom de pele branco como único possível e como houve uma reação contrária que ensejou a criação de lápis com tons de pele diversos. No mesmo sentido, tratamos do caso do projeto Poéticas do Habitar, que produz pigmentos a partir da terra, ministrando oficinas e cursos e disponibilizando materiais. Conclui-se que controvérsias da história da arte auxiliam a disputar alternativas democráticas de tecnologias, através de relações de solidariedade com comunidades de fora da universidade.
Roteiros de gameplay e ensino de história: experiências didáticas prática docente
Authors: Seabra George Leonardo , Santos Christiano Britto Monteiro dos , Silva Fillip Julia da
Published: April 2024

Este artigo apresentará as possibilidades de diálogo entre as tecnologias digitais e as ações pedagógicas libertadoras/empoderadoras no Ensino de História. Defendemos que a intersecção entre docente - conhecimento acadêmico - e discente - comunidade - tem a capacidade de produzir e/ou abrir novos caminhos  para o ensino de História na Educação Básica. Veremos neste texto como a elaboração de roteiro de gameplay/jogos eletrônicos abrem possibilidades didáticas para o diálogo entre o ensino de História e os jogos eletrônicos, e ao mesmo tempo, oferece outros caminhos para trabalhar com as representações históricas dos estudantes da Educação Básica.
Práticas docentes e comunidade: relações no campo Ciência, Tecnologia e Sociedade
Authors: Brognoli Paula Caldas , Dias Maria Sara De Lima , De Faria Paula Maria Ferreira
Published: April 2024

O campo Ciência, Tecnologia e Sociedade (CTS) propõe um novo olhar para os estudos científicos e tecnológicos; no âmbito educacional, promove uma nova postura epistemológica e pedagógica dos docentes. Nesse sentido, este estudo visa identificar o debate entre as tecnologias e práticas docentes no campo CTS e as proximidades entre universidade e sociedade. Trata-se de uma pesquisa de caráter teórico, que apresenta uma revisão sistemática da literatura. Os artigos identificados revelaram as profundas transformações do campo educacional em meio à pandemia, evidenciando as tecnologias como recurso importante ao processo de ensino-aprendizagem nesse contexto; destacaram, também, os impactos dessas alterações sobre as vivências dos(as) docentes. Conclui-se que o campo CTS aporta contribuições para a compreensão do cenário educacional, valorizando a interação entre as práticas docentes, as tecnologias e a sociedade como fonte de produção e compartilhamento de conhecimentos e saberes.
Estudo sobre o uso de big data na produção estatística
Authors: Belo Hypolito Elizabeth , Diniz da Silva Andrea , Xavier Antonia , Kopplin Chiquito Átila , Uchoa Moreira Gomes Lucas , Gonçalves Peixoto Isis , Menezes Marques de Oliveira Beatriz , Etevaldo Teixeira Junior Antonio , De Moraes Frota Alvaro
Published: April 2024

A necessidade de estatísticas públicas de alta qualidade é cada vez mais premente emnossa sociedade, enquanto os recursos destinados à sua produção são cada vez maisescassos. Nesse contexto, pesquisadores e institutos de estatística vêm investindo cadavez mais em fontes de dados alternativas, incluindo big data. O presente trabalho temcomo objetivo revelar a produção acadêmica em torno do tema a partir de documentosextraídos do Google Scholar, cujos títulos contêm o termo big data e um outro termorelacionado às estatísticas públicas. Os resultados mostram que de 2004 a 2020 aprodução anual saltou de 1 documento para 906. Além disso, os termos health eenvironment estão presentes em cerca de 50% dos documentos. Adicionalmente, otrabalho apresenta a seleção e a análise de uma amostra de artigos gratuitos, usados naconstrução de uma base de metadados capaz de contribuir para a discussão dos limites eas potencialidades de big data na produção de estatísticas confiáveis.
Citoyenneté à vendre
Authors: Surak Kristin , Heudre Antoine
Published: April 2024

Cet article étudie la manière dont les États commercialisent une prérogative souveraine en accordant la citoyenneté en échange d’un don ou d’un investissement à l’intérieur d’un marché concurrentiel. S’appuyant sur huit années d’enquête de terrain dans seize pays, il explique d’abord comment l’État transforme l’octroi de la citoyenneté pour devenir un acteur crédible du marché. Il examine ensuite comment les logiques de marché reconfigurent les stratégies étrangères et les pratiques de citoyenneté des pays qui deviennent dépendants de cette source de revenus. La dernière partie analyse les diverses relations de pouvoir entre les sphères publique et privée dans les programmes de citoyenneté par investissement, et la conclusion examine les implications en termes de néolibéralisation.
Quand le capitalisme négocie ses peines
Authors: Angeletti Thomas
Published: April 2024

De nombreux conflits judiciaires avec de grandes entreprises se trouvent actuellement réglés par un dispositif inédit : les transactions pénales. Elles impliquent pour ces entreprises de verser une amende à l’État afin de mettre fin aux poursuites, et d’éviter procès et condamnation. Comment est-il apparu possible et souhaitable de contourner ainsi l’ordre pénal pour solder les malversations d’entreprises parmi les plus importantes du capitalisme contemporain ? Afin de mettre en évidence les logiques qui ont présidé à l’émergence de ce dispositif aux États-Unis et à son déploiement croissant, cet article défend qu’il faut orienter le regard sur les dynamiques de l’espace judiciaire new-yorkais. À partir d’une enquête sur les procureurs et avocats spécialisés dans la délinquance en col blanc à New York, il montre comment l’institutionnalisation de la lutte contre la délinquance d’affaires, via le recours à ces transactions, a progressivement renforcé la défense des entreprises, et comment les law firms se sont saisies de ce nouveau dispositif judiciaire pour investir le droit pénal.
Corps privés, intérêts publics
Authors: Vargovčíková Jana , Vauchez Antoine
Published: April 2024

Sous l’effet des politiques de la déontologie et de la probité publique qui ont émergé depuis les années 2010, le patrimoine, les intérêts et les ambitions privées des élites politico-administratives se sont trouvés pour partie mis en transparence. En suivant les pratiques, usages et savoirs qui se construisent autour des agences chargées de la surveillance de ce « corps privé » des dirigeants publics, avec en tête la Haute Autorité pour la transparence de la vie publique, on s’intéresse ici aux conditions dans lesquelles cette mise en transparence des sommets de l’État est devenue « acceptable », et même pour certains « souhaitable », à l’intérieur de groupes historiquement réticents aux formes de régulation externe et de publicité. L’accommodement des résistances à ce contrôle passe par des formes d’évitement du politique construites en contrepoint du registre du scandale ou de la dénonciation, et par la formation de ce qui s’apparente à une morale managériale de l’État accompagnant les nouvelles circulations public-privé et les inscrivant dans les affaires courantes du travail rapproché de l’État, des grandes entreprises et des cabinets de conseil.
Kippour, 1973 : la guerre qui transforma Israël et le Moyen-Orient
Authors: Schillo Frédérique
Published: April 2024

La guerre du Kippour en octobre 1973 marque une transformation profonde et durable. Pour Israël, le mythe de son invincibilité s’effondre ; pour l’Égypte, l’honneur militaire retrouvé permettra le dialogue avec Tel-Aviv. Pour les Européens, dont la France, c’est le constat d’une marginalisation au profit des États-Unis.
L’engagement français au Liban au sein de la Finul , 1978-1979
Authors: Midan Christophe
Published: April 2024

La France s’engage efficacement au sein de la Finul en 1978-1979, avec une réelle prise de risques, se traduisant par des accrochages violents et des pertes. Le mandat de l’ONU n’étant pas robuste, le détachement français est partiellement retiré en mars 1979, se limitant temporairement à des tâches logistiques.
France-Russie : vers une nouvelle dialectique nucléaire ?
Authors: Rinel-Rajaoarinelina Lova
Published: April 2024

L’agressivité croissante de Moscou envers Paris souligne paradoxalement la crédibilité de la position française dans son soutien sans ambiguïté à l’Ukraine. En n’excluant aucune option, le président Macron a haussé le niveau de compétition, obligeant V. Poutine à admettre le rôle stratégique de la France dans ce conflit.
L’apprentissage de Vincent Roger (1658/9-avant 1680) auprès de Louis Cossin (1673)
Authors: Mathis Rémi
Published: April 2024

Le 8 juillet 1673, Vincent Roger, 14 ans, est mis en apprentissage pour 6 ans avec Louis Cossin. Ses parents ne payent rien, et c’est même lui qui sera payé 60 livres au terme des 6 ans. Ce jeune homme est le frère d’un autre jeune graveur, François Roger. Il meurt jeune, ce qui explique l’absence d’œuvre à son nom.
Marie-Joseph et Rosine Antoinette Bessin : graver et peindre dans l’entourage de Redouté
Authors: Menapace Luc , Samuel-Hervé Aliénor
Published: April 2024

De nombreux artistes ont gravé d’après les planches de Pierre-Joseph Redouté ou ont été son élève. Parmi ceux-ci, on repère un père et sa fille. Il s’agit de Marie-Joseph Bessin, graveur, et de sa fille Rosine Antoinette Bessin épouse Delaporte, peintre de fleurs. L’Inventaire du Fonds français après 1800 s’interrogeait sur leur lien. Il est désormais établi. Ajoutons à cela que la famille Bessin a habité plusieurs années à la même adresse que Redouté. Elle est issue d’une dynastie de tapissiers des Gobelins, mais, en étudiant la parentèle et les proches, on repère des graveurs, des imprimeurs, des libraires, qui éclairent ce passage de la tapisserie à la gravure et à la peinture. Une difficulté rencontrée pour traiter de cette famille est le manque de sources et des aléas comme l’incendie de l’appartement de Rosine Antoinette Bessin en 1858, dans lequel elle perd la plupart de ses œuvres.
1821 : le Manuel de Joubert
Authors: Meyer Véronique
Published: April 2024

En 1821, le graveur et éditeur d'estampes François-Etienne Joubert (1746-1826) faisait paraître le Manuel de l'Amateur d'estampes dont il est l'auteur. Ce manuel fort de trois volumes lui vaut aujourd'hui encore de ne pas être entièrement tombé dans l'oubli. Son étude qui n'a encore jamais été entreprise fait l'objet de cet article. Y sont analysés son contenu mais aussi la démarche de Joubert, ses goûts, ses ambitions et son caractère. Dans le Manuel accompagné d'un avant-propos Joubert se pose en historien de l'estampe, en défenseur de la production française contre la production anglaise jusque dans ses procédés techniques, mais aussi de la gravure sur cuivre contre la lithographie. Dans le cadre de ce numéro spécial sur la transmission, outre les intentions pédagogiques de Joubert, sont également pris en considération la diffusion du Manuel à travers l'étude des souscripteurs, de quelques pièces d'archives et des annonces parues dans les journaux.
Le texte littéraire via zoom : de la lecture à la création
Authors: Chikh Touami Yamena
Published: April 2024

Notre contribution s’inscrit dans le cadre d’une réflexion sur l’enseignement-apprentissage du texte littéraire à distance. Celui-ci, envisagé dans sa double dimension créative et esthétique à la fois, diffère radicalement d’un texte argumentatif ou explicatif. Ce type, nécessite des stratégies et des compétences qui permettent à l’apprenant de s’évader dans un monde qui ne lui appartient pas, fait qui pourrait décourager l’apprenant et l’enseignant de crainte de sa banalisation. Oser didactiser le texte littéraire en ligne nous a poussée à nous interroger en posant les questions suivantes : Est-ce qu’on doit lire la littérature ou l’écrire ? Quels serait l’impact d’un atelier d’écriture littéraire en ligne sur la compétence lectorale et scripturale chez les étudiants inscrits en 2ème année de licence de français à l’université de Médéa ? Pour répondre à ces questionnements, nous avons adopté le protocole méthodologique et expérimental suivant : Une préenquête afin de dresser un état de lieu sur l’enseignement du texte littéraire et la mise en œuvre d’un atelier d’écriture littéraire via « zoom » au profit des étudiants. Une phase expérimentale composée de deux temps distincts : Phase de lecture et d’exploration d’acrostiche. Phase de production et de création littéraire. Les résultats obtenus démontrent bien la faisabilité et la crédibilité du E-learning. Cette expérimentation nous a permis d’enseigner le texte littéraire (acrostiche) et de développer plusieurs habiletés à distance chez les étudiants.
Digital HR Implementation for Business Growth in Industrial 5.0
Authors: Boopathi Sampath
Published: April 2024

The chapter discusses the transformation of human resources (HR) in the era of Industry 5.0, highlighting the importance of digital HR implementation in driving business growth. It discusses the strategic integration of digital tools, analytics, and automation within HR functions to improve workforce agility, productivity, and engagement. This chapter discusses the benefits of digital HR solutions, including talent acquisition optimization, performance management enhancement, learning facilitation, and employee experience enrichment. It emphasizes the importance of organizational agility, change management, and continuous innovation for successful adoption. By aligning HR strategies with Industry 5.0 needs, businesses can drive sustainable growth, foster innovation, and maintain a competitive edge in the global marketplace.
Crafting Effective HR Strategies for the Modern Workplace
Authors: S Boopathi , Gopi S.
Published: April 2024

The integration of digital technologies has significantly transformed the way organizations operate, especially in the field of human resources (HR). This chapter explores the importance of creating effective HR strategies that are tailored to the modern workplace, focusing on navigating the digital frontier. By utilizing digital tools, HR professionals can streamline processes, improve employee engagement, and optimize talent management practices. The chapter also discusses the challenges and opportunities of digital transformation in HR, including recruitment, on-boarding, performance management, and employee development. It provides actionable guidance for HR leaders to harness digital technologies to create agile, resilient, and future-ready workplaces.
Digital Transformation in Developing Economies
Authors: Pasumarthy Rekha , Mohammed Shariq , Laxman Vishnu , Krishnamoorthy V. , Durga S. , Boopathi Sampath
Published: April 2024

This chapter delves into the role of digital HR in developing economies, focusing on the intersection of technology, human resources, and economic development. It highlights the opportunities and challenges of digitalization, such as HR leveraging digital tools to enhance workforce efficiency and foster innovation. The chapter also discusses the implications of Industry 5.0, emphasizing the integration of AI, automation, and IoT in reshaping HR practices. The potential benefits of digital HR include improved talent management and increased productivity, but also address challenges like infrastructure constraints and skill gaps. The chapter forecasts trends in Digital HR specific to developing economies, aligning with Industry 5.0 principles. The chapter explores the effects of digitalization on workforce dynamics, organizational structures, and the economy, addressing challenges like digital literacy, data privacy, and socio-economic disparities. It highlights the potential of digital HR in bridging skill gaps, promoting inclusive growth, and stimulating innovation.
From Analysis to Action With PESTEL Insights Into Izmir's Sustainable Urban Logistics Plan
Authors: Polat Olcay , Güngör Aşkıner , Haldenbilen Soner , Ceylan Halim
Published: April 2024

The Izmir Sustainable Urban Logistics Plan (LOPI) addresses the challenges of integrating sustainability into urban logistics amidst rapid urbanization and environmental concerns. It focuses on the significant role of urban freight transportation in city development and the obstacles it faces, including traffic congestion and pollution. Utilizing a participatory model, LOPI engages diverse stakeholders, leveraging the PESTEL analysis to evaluate and refine project proposals across seven key areas. This approach fosters collaborative planning and ensures that the logistics framework aligns with social, economic, and environmental objectives. The study illustrates the importance of stakeholder involvement in developing sustainable urban logistics plans, offering insights for cities globally to enhance logistics sustainability through inclusive, strategic planning.
An Outlook on Use of Roller-Compacted Concrete Roads in Rural Development Areas
Authors: Gülhan Görkem
Published: April 2024

It is known that when the logistics sector is effectively integrated, it enables sustainable growth of rural development. Improving transport networks may increase trade and support economic growth by enabling faster transport of goods and services. The effectiveness of roller compacted concrete roads in rural development areas has been researched. Their durability, low maintenance costs, and environmental sustainability advantages may contribute to economic revitalization in rural areas. The study analyses the impacts of roller compacted concrete (RRC) applications on rural development across Turkey and discusses the advantages and strategic use of this technology. In the specific case of Izmir, the integration of RCC into rural development strategies and its potential contributions to the logistics sector are discussed, and recommendations are presented for increasing the competitiveness of the region and achieving sustainable development goals.
Interprofessional and Community Collaboration in Gun Violence Prevention and Intervention
Authors: Staton Angela R. , Gilligan Tammy , Kielty Michele
Published: April 2024

Addressing the complex challenges associated with gun violence in schools requires a team approach. The literature supports an interprofessional, collaborative orientation toward addressing the many aspects of people, places, and processes connected to the problem of gun violence in K-12 education. The foundational principles and values of interprofessional collaboration and how they can be used in K-12 settings are illustrated in this chapter, and an ecological view of school systems and their interface with communities is explored as a way of conceptualizing the complex issues around gun violence in schools. Finally, a multi-tiered system of support is presented as a framework for tactically approaching the systems connected to gun violence in schools.