Search results for "general [Quasar]"
showing 10 items of 3787 documents
Negative emotional state slows down movement speed : behavioral and neural evidence
2019
Background Athletic performance is affected by emotional state. Athletes may underperform in competition due to poor emotion regulation. Movement speed plays an important role in many competition events. Flexible control of movement speed is critical for effective athletic performance. Although behavioral evidence showed that negative emotion can influence movement speed, the nature of the relationship remains controversial. Thus, the present study investigated how negative emotion affects movement speed and the neural mechanism underlying the interaction between emotion processing and movement control. Methods The present study combined electroencephalography (EEG) technology with a cued-…
Population Properties of Compact Objects from the Second LIGO-Virgo Gravitational-Wave Transient Catalog
2021
Abbott, R., et al. (LIGO and Virgo Collaboration)
Increasing the Astrophysical Reach of the Advanced Virgo Detector via the Application of Squeezed Vacuum States of Light
2019
Current interferometric gravitational-wave detectors are limited by quantum noise over a wide range of their measurement bandwidth. One method to overcome the quantum limit is the injection of squeezed vacuum states of light into the interferometer's dark port. Here, we report on the successful application of this quantum technology to improve the shot noise limited sensitivity of the Advanced Virgo gravitational-wave detector. A sensitivity enhancement of up to 3.2±0.1 dB beyond the shot noise limit is achieved. This nonclassical improvement corresponds to a 5%-8% increase of the binary neutron star horizon. The squeezing injection was fully automated and over the first 5 months of the thi…
Search for Gravitational Waves Associated with Gamma-Ray Bursts Detected by Fermi and Swift during the LIGO-Virgo Run O3a
2022
Abbott, R., et al. (LIGO and VIRGO Collaboration)
The advanced Virgo longitudinal control system for the O2 observing run
2020
Following a successful period of data-taking between 2006 and 2011, the Virgo gravitational-wave detector was taken offline for a major upgrade. The changes made to the instrument significantly increased the complexity of the control systems and meant that an extended period of commissioning was required to reach a sensitivity appropriate for science data-taking. This commissioning period was completed in July of 2017 and the second-generation Advanced Virgo detector went on to join the Advanced LIGO detectors in the O2 science run in August of the same year. The upgraded detector was approximately twice as sensitive to binary neutron star mergers as the first-generation instrument. During …
GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
2017
On August 17, 2017 at 12-41:04 UTC the Advanced LIGO and Advanced Virgo gravitational-wave detectors made their first observation of a binary neutron star inspiral. The signal, GW170817, was detected with a combined signal-to-noise ratio of 32.4 and a false-alarm-rate estimate of less than one per 8.0×104 years. We infer the component masses of the binary to be between 0.86 and 2.26 M, in agreement with masses of known neutron stars. Restricting the component spins to the range inferred in binary neutron stars, we find the component masses to be in the range 1.17-1.60 M, with the total mass of the system 2.74-0.01+0.04M. The source was localized within a sky region of 28 deg2 (90% probabili…
Clinical and Sociodemographic Variables and the Level of Social Support in People with Multiple Sclerosis
2019
Wstęp. Stwardnienie rozsiane (SM) jest przewlekłą, postępującą neurologiczną chorobą, która może prowadzić do znacznej niepełnosprawności. Istotnym zasobem w radzeniu sobie z SM i innymi chorobami przewlekłymi jest wsparcie społeczne.Cel. Celem badań było określenie związku pomiędzy zmiennymi klinicznymi i socjodemograficznymi a wsparciem społecznym u osób z SM.Materiał i metody. W badaniu wykorzystano Rozszerzoną Skalę Niewydolności Ruchowej (EDSS), Skalę Niepełnosprawności Neurologicznej Szpitala Guy (GNDS) oraz Berlińskie Skale Wsparcia Społecznego Grupę badaną stanowiło 137 osób ze zdiagnozowanym SM.Wyniki. Spostrzegane wsparcie społeczne nie jest powiązane ze zmiennymi klinicznymi, tak…
Inference of proto-neutron star properties from gravitational-wave data in core-collapse supernovae
2021
The eventual detection of gravitational waves from core-collapse supernovae (CCSN) will help improve our current understanding of the explosion mechanism of massive stars. The stochastic nature of the late post-bounce gravitational wave signal due to the non-linear dynamics of the matter involved and the large number of degrees of freedom of the phenomenon make the source parameter inference problem very challenging. In this paper we take a step towards that goal and present a parameter estimation approach which is based on the gravitational waves associated with oscillations of proto-neutron stars (PNS). Numerical simulations of CCSN have shown that buoyancy-driven g-modes are responsible …
Confident, cautiously confident or concerned? Working life profiles, capabilities, and expectations for work-family reconciliation among young Finnis…
2022
The uncertainties and growing social inequality young adults face in the labour market call for research on the link between young women’s expectations about working life and the real options they have in seeking to combine work with care. Drawing on Sen’s capabilities approach, this study contributes to filling this gap in the literature by examining how women in emerging adulthood in Finland foresee their future career and working life, and how these expectations are associated with socioeconomic and partnership characteristics and their expectations for work-family reconciliation. Survey data obtained from 527 young women aged 18–29 were analysed using latent profile analysis. Three dist…
Between agency and uncertainty – Young women and men constructing citizenship through stories of sexual harassment
2022
In this article, we examine young people's narratives on sexual harassment on how it is endured, objected, observed, and negotiated in diverse everyday life environments. The article is based on an analysis of thematic interviews with 36 young people aged 15–19 living in the metropolitan area of Helsinki, Finland. Altogether 23 young women and 13 young men participated in the interviews which were conducted at educational institutions as individual, paired or group interviews. We analyze young people's narratives on sexual harassment as stories of everyday citizenship and, and more precisely, as acts of citizenship. We have also applied the concept of respectability to study how young women…