ORCID Profile
0000-0002-3279-9764
Current Organisations
Université Laval
,
Universidad Nacional Autónoma de México
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Publisher: Informa UK Limited
Date: 28-03-2015
Publisher: Elsevier BV
Date: 04-2015
Publisher: American Psychological Association (APA)
Date: 06-2020
DOI: 10.1037/MOT0000142
Publisher: American Psychological Association (APA)
Date: 09-2013
DOI: 10.1037/A0032573
Abstract: The passion scale, based on the dualistic model of passion, measures 2 distinct types of passion: Harmonious and obsessive passions are predictive of adaptive and less adaptive outcomes, respectively. In a substantive-methodological synergy, we evaluate the construct validity (factor structure, reliability, convergent and discriminant validity) of Passion Scale responses (N = 3,571). The exploratory structural equation model fit to the data was substantially better than the confirmatory factor analysis solution, and resulted in better differentiated (less correlated) factors. Results from a 13-model taxonomy of measurement invariance supported complete invariance (factor loadings, factor correlations, item uniquenesses, item intercepts, and latent means) over language (French vs. English the instrument was originally devised in French, then translated into English) and gender. Strong measurement partial invariance over 5 passion activity groups (leisure, sport, social, work, education) indicates that the same set of items is appropriate for assessing passion across a wide variety of activities--a previously untested, implicit assumption that greatly enhances practical utility. Support was found for the convergent and discriminant validity of the harmonious and obsessive passion scales, based on a set of validity correlates: life satisfaction, rumination, conflict, time investment, activity liking and valuation, and perceiving the activity as a passion.
Publisher: MDPI AG
Date: 07-03-2022
Abstract: Planetary Nebulae (PNe) that are physical members of Galactic open clusters are powerful probes that allow precise determination of their distance and crucially their initial mass on the main sequence. Here, we revisit the physical association of the PN BMP J1613–5406 with the open cluster NGC 6067 and present our preliminary results based on our new ESO/VLT FORS2 data. Our PN spectral data permit the calculation of a precise radial velocity and reddening to the PN that shows a tight consistency with the literature corresponding cluster parameters including importantly the radial velocity. Our measurements, combined with the agreement between the distances of the two objects and the fact that the PN is located well within the cluster boundaries, confirm that the PN is physically associated with the cluster. The cluster has a turn-off mass of around 5 solar masses that indicates a PN initial mass of around 5.6 solar masses. This is closer to the theoretical lower limit of core-collapse supernova formation than has ever been previously observed, providing a unique opportunity for further stellar and Galactic chemical evolution studies using this system.
Publisher: American Astronomical Society
Date: 08-2022
Abstract: We report confirmation of a large, evolved, bipolar planetary nebula and its blue, white dwarf central star as a member of the ∼500 Myr old Galactic open star cluster M37 (NGC 2099). This is only the third known ex le of a planetary nebula in a Galactic open cluster and was found via our ongoing program of identifying and studying planetary nebulae—open cluster associations. High confidence in the association comes from the consistent radial velocities and proper motions for the confirmed central star and cluster stars from Gaia, reddening agreement, and location of the planetary nebula well within the tidal cluster boundary. Interestingly, all three Galactic ex les have bipolar morphology and likely Type-I chemistry, both characteristics of higher mass progenitors. In this case the progenitor star mass is in the midrange of ∼2.8 M ☉ . It provides a valuable, additional point on the key stellar initial-to-final mass relation independent of cluster white dwarf estimates and also falls in a gap in the poorly s led mass region. This planetary nebula also appears to have the largest kinematical age ever determined and implies increased visibility lifetimes when they are located in clusters.
Publisher: Wiley
Date: 05-07-2023
DOI: 10.1111/BJEP.12626
Abstract: Universities faced important and sudden changes following the lockdown measures imposed during the COVID‐19 pandemic. Traditional educational practices were disrupted as c uses were closed while distance learning was hastily adopted. This study documents the evolution of university students' autonomous and controlled motivation for their studies following c us closures by relying on a person‐centred perspective. More specifically, it examines motivation profiles and their temporal stability across two time points taken before and during the pandemic, while also considering the role of educational climate, trait self‐control and control variables (sex and age) as predictors of profile membership. A total of 1940 university students participated in this study by responding to online questionnaires at two time points, before (Time 1) and after (Time 2) the pandemic. We relied on latent profile and latent transition analyses to estimate motivation profiles, their temporal stability and their predictors. A four‐profile solution ( Self‐Determined, Moderately Motivated , Extrinsically Motivated , Amotivated ) was selected and replicated at both time points. We observed a low degree of variability in profile membership over time, especially for the Amotivated profile. A need‐supportive educational climate and trait self‐control consistently predicted a greater likelihood of membership into more adaptative profiles ( Self‐Determined, Moderately Motivated ). The COVID‐19 pandemic did not drastically change the motivational profiles of university students. Nevertheless, educational climate and self‐control appeared to ‘protect’ students against the endorsement of more problematic motivation profiles both before and during the pandemic, making them important targets for intervention.
Publisher: Elsevier BV
Date: 12-2010
Publisher: Elsevier BV
Date: 07-2015
Publisher: American Psychological Association (APA)
Date: 02-2020
DOI: 10.1037/EDU0000482
No related grants have been discovered for Roberto Vázquez.