Incorporação das ciências sociais na produção de conhecimentos sobre trabalho e saúde Incorporation of the social sciences in the production of knowledge about work and health

Este artigo apresenta uma revisão bibliográfica sobre a influência das ciências sociais para a superação de concepções reducionistas de relação trabalho-saúde, nas duas últimas décadas. Trata-se de um tipo de diagnóstico da produção científica, no qual destacam-se: as contribuições para a caracterização da saúde do trabalhador, como campo de conhecimento e de intervenção, e para a análise da política e das práticas das instituições públicas; as abordagens compreensivas e as questões de gênero. Efetuou-se um levantamento de artigos de periódicos indexados e de dissertações e teses de pós-graduação. Foram consultados: o banco de dissertações e teses da Coordenação de Aperfeiçoamento do Ensino Superior e do Instituto Brasileiro de Informação em Ciência e Tecnologia; a Biblioteca Virtual em Saúde da Biblioteca Regional de Medicina e o site do Scientific Electronic Library On-line. Constatou-se a predominância de estudos sobre temáticas específicas e determinadas categorias de trabalhadores, em contraposição a tentativas de abordagens totalizadoras. Apesar dos notáveis avanços em termos de conhecimento, existe carência significativa de investigações sobre segmentos da população trabalhadora que apresentam maior vulnerabilidade social.<br>This article presents a bibliographical revision on the influence of the social sciences to overcome the reducing conceptions of relationship work-health, in the last two decades. It is a type of diagnosis of the scientific production, in which outstanding aspects are: the contributions for the characterization of the worker’s health, as knowledge field and of intervention, and for the analysis of the politics and of the practices of the public institutions; the comprehensive approaches and gender questions. It was conducted an assessment of indexed journals and masters degree dissertations and doctoral thesis. It was consulted: the bank of dissertations and thesis organized by the Coordination of Improvement of the Higher Education and for the Brazilian Institute of Information in Science and Technology; the Virtual Library in Health of the Regional Library of Medicine and Scientific Electronic site On-line Library. It was verified the predominance of studies on specific themes and certain categories of workers, in opposition to attempts of totalizing approaches. In spite of the outstanding progresses in knowledge terms and of enlargement of study objects, significant lack of investigations exists on segments of the working population that present larger social vulnerability

Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model

We present results from a semicoherent search for continuous gravitational waves from the low-mass x-ray binary Scorpius X-1, using a hidden Markov model (HMM) to track spin wandering. This search improves on previous HMM-based searches of LIGO data by using an improved frequency domain matched filter, the J-statistic, and by analyzing data from Advanced LIGO’s second observing run. In the frequency range searched, from 60 to 650 Hz, we find no evidence of gravitational radiation. At 194.6 Hz, the most sensitive search frequency, we report an upper limit on gravitational wave strain (at 95% confidence) of h^95%_0 = 3.47×10−25 when marginalizing over source inclination angle. This is the most sensitive search for Scorpius X-1, to date, that is specifically designed to be robust in the presence of spin wandering

Search for Subsolar-Mass Binaries in the First Half of Advanced LIGO???s and Advanced Virgo???s Third Observing Run

We report on a search for compact binary coalescences where at least one binary component has a mass between 0.2 M⊙ and 1.0 M⊙ in Advanced LIGO and Advanced Virgo data collected between 1 April 2019 1500 UTC and 1 October 2019 1500 UTC. We extend our previous analyses in two main ways: we include data from the Virgo detector and we allow for more unequal mass systems, with mass ratio q ≥ 0.1. We do not report any gravitational-wave candidates. The most significant trigger has a false alarm rate of 0.14 yr^−1. This implies an upper limit on the merger rate of subsolar binaries in the range [220−24200] Gpc^−3 yr^−1,depending on the chirp mass of the binary. We use this upper limit to derive astrophysical constraints on two phenomenological models that could produce subsolar-mass compact objects. One is an isotropic distribution of equal-mass primordial black holes. Using this model, we find that the fraction of dark matter in primordial black holes in the mass range 0.2 M⊙ < m PBH < 1.0 M⊙ is f PBH ≡ Ω PBH/Ω DM ≲ 6%. This improves existing constraints on primordial black hole abundance by a factor of ∼3. The other is a dissipative dark matter model, in which fermionic dark matter can collapse and form black holes. The upper limit on the fraction of dark matter black holes depends on the minimum mass of the black holes that can be formed: the most constraining result is obtained at M min = 1 M⊙, where f DBH ≡ Ω DBH/Ω DM ≲ 0.003%. These are the first constraints placed on dissipative dark models by subsolar-mass analyses

Search of the early O3 LIGO data for continuous gravitational waves from the Cassiopeia A and Vela Jr. supernova remnants

We present directed searches for continuous gravitational waves from the neutron stars in the Cassiopeia A (Cas A) and Vela Jr. supernova remnants. We carry out the searches in the LIGO detector data from the first six months of the third Advanced LIGO and Virgo observing run using the WEAVE semicoherent method, which sums matched-filter detection-statistic values over many time segments spanning the observation period. No gravitational wave signal is detected in the search band of 20–976 Hz for assumed source ages greater than 300 years for Cas A and greater than 700 years for Vela Jr. Estimates from simulated continuous wave signals indicate we achieve the most sensitive results to date across the explored parameter space volume, probing to strain magnitudes as low as ∼6.3 × 10^{−26} for Cas A and ∼5.6 × 10^{−26} for Vela Jr. at frequencies near 166 Hz at 95% efficiency

All-sky search for short gravitational-wave bursts in the third Advanced LIGO and Advanced Virgo run

This paper presents the results of a search for generic short-duration gravitational-wave transients in data from the third observing run of Advanced LIGO and Advanced Virgo. Transients with durations of milliseconds to a few seconds in the 24–4096 Hz frequency band are targeted by the search, with no assumptions made regarding the incoming signal direction, polarization, or morphology. Gravitational waves from compact binary coalescences that have been identified by other targeted analyses are detected, but no statistically significant evidence for other gravitational wave bursts is found. Sensitivities to a variety of signals are presented. These include updated upper limits on the source rate density as a function of the characteristic frequency of the signal, which are roughly an order of magnitude better than previous upper limits. This search is sensitive to sources radiating as little as ∼10^−10 M⊙ c^2 in gravitational waves at ∼70 Hz from a distance of 10 kpc, with 50% detection efficiency at a false alarm rate of one per century. The sensitivity of this search to two plausible astrophysical sources is estimated: neutron star f modes, which may be excited by pulsar glitches, as well as selected core-collapse supernova models