245 research outputs found
What Makes a Good Student?
Abstract
Academic achievement in college students has been predicted in previous studies from the application of self-regulation study strategies, academic self-efficacy, study skills, need for achievement, and procrastination. As part of a larger study looking at the effect of a study skill intervention, 49 college aged students were assessed for the variables listed above. A statistically significant correlation was found between self-regulation and self-efficacy. Using a multiple regression, the variables together predicted students’ GPAs, however, it was only study skills that was a statistically significant predictor. In zero-order correlations, self-regulation and self-efficacy were significantly correlated. More research should be done to investigate the relation between these variables.
Keywords: academic achievement, study skill
Stellar sources in the ISOGAL intermediate bulge fields
We present a study of ISOGAL sources in the "intermediate" galactic bulge
( 2, 1--4), observed by
ISOCAM at 7 and 15 . In combination with near-infrared (I, J, K) data of DENIS survey, complemented by 2MASS data, we discuss the nature of
the ISOGAL sources, their luminosities, the interstellar extinction and the
mass-loss rates. A large fraction of the 1464 detected sources at 15
are AGB stars above the RGB tip, a number of them show an excess in
([7]-[15]) and (K-[15]) colours, characteristic
of mass-loss. The latter, especially (K-[15]), provide
estimates of the mass-loss rates and show their distribution in the range
10 to 10 M/yr.Comment: 16 pages, accepted for publication in Astronomy and Astrophysic
Optics in Curved Space
We experimentally study the impact of intrinsic and extrinsic curvature of space on the evolution of light. We show that the topology of a surface matters for radii of curvature comparable with the wavelength, whereas for macroscopically curved surfaces only intrinsic curvature is relevant. On a surface with constant positive Gaussian curvature we observe periodic refocusing, self-imaging, and diffractionless propagation. In contrast, light spreads exponentially on surfaces with constant negative Gaussian curvature. For the first time we realized two beam interference in negatively curved space
Method to measure neutron beam polarization with 2x1 Neutron Spin Filter
A method to measure a beam polarization with the use of polarized 3He gas is
discussed. It is shown that special design of the Neutron Spin Filter cell
allows for a fast and accurate measurement. The accuracy of this method is
analyzed.Comment: 13 pages, 3 figures, submitted to Nucl. Instrum. Methods A on 02
January 200
Implementing Diversity Training Targeting Faculty Microaggressions and Inclusion: Practical Insights and Initial Findings
Despite the importance of faculty diversity training for advancing an inclusive society, little research examines whether participation improves inclusion perceptions and belongingness. Integrating training and diversity education literature concepts, this study examines the effectiveness of training targeting microaggressions in six STEM (Science, Technology, Engineering, Mathematics) oriented departments at a research-intensive university. Reactions data collected at the end of face-to-face training suggested that participation generally increased inclusion understanding. Self-assessments on inclusion concepts collected from 45% of participants before and three weeks after training suggest participation increases perceptions of the importance of inclusion, microaggression allyship awareness, inclusive behaviors, and organizational identification. Compared to white men, women and minorities reported a greater increase in satisfaction with their department affiliation. While self-assessment results are exploratory and have limitations, analysis suggests that diversity training may enhance knowledge of microaggressions, allyship, inclusive behaviors, and belongingness perceptions. We provide insights for evaluating and implementing diversity training interventions
ISOGAL: A deep survey of the obscured inner Milky Way with ISO at 7 and 15 micron and with DENIS in the near-infrared
The ISOGAL project is an infrared survey of specific regions sampling the
Galactic Plane selected to provide information on Galactic structure,stellar
populations,stellar mass-loss and the recent star formation history of the
inner disk and Bulge of the Galaxy. ISOGAL combines 7 and 15 micron ISOCAM
observations - with a resolution of 6'' at worst - with DENIS IJKs data to
determine the nature of the sources and theinterstellar extinction. We have
observed about 16 square degrees with a sensitivity approaching 10-20mJy,
detecting ~10^5 sources,mostly AGB stars,red giants and young stars. The main
features of the ISOGAL survey and the observations are summarized in this
paper,together with a brief discussion of data processing and quality. The
primary ISOGAL products are described briefly (a full description is given in
Schuller et al. 2003, astro-ph/0304309): viz. the images and theISOGAL-DENIS
five-wavelength point source catalogue. The main scientific results already
derived or in progress are summarized. These include astrometrically calibrated
7 and 15um images,determining structures of resolved sources; identification
and properties of interstellar dark clouds; quantification of the infrared
extinction law and source dereddening; analysis of red giant and (especially)
AGB stellar populations in the central Bulge,determining luminosity,presence of
circumstellar dust and mass--loss rate,and source classification,supplemented
in some cases by ISO/CVF spectroscopy; detection of young stellar objects of
diverse types,especially in the inner Bulge with information about the present
and recent star formation rate; identification of foreground sources with
mid-IR excess. These results are the subject of about 25 refereed papers
published or in preparation.Comment: A&A in press. 19 pages,10 Ps figures; problems with figures fixe
First ISOCAM images of the Milky Way
ISOGAL is a 15 μm ISOCAM survey of ∼ 12 deg2
in the Galactic Plane interior to |ℓ| = 45°. In combination with IJK data from the near-infrared southern sky survey DENIS, the ISO images allow the first detailed study of stellar populations throughout the inner Galaxy. We present preliminary results from a test observation at ℓ = 45° with 6" pixels and completeness limit 8 mJy. Of the ∼ 3000 sources deg2 detected, about half are KM giants, seen through extinction of up to Av, ∼, 30,while most of the remainder are probably dusty young stars. Although away from bright IRAS regions, the field displays spectacular emission features, and, unexpectedly, a number of regions which are optically thick at 15 μm. The dark regions are presumably dense filaments with Av, >, 25
Multisite spectroscopic seismic study of the beta Cep star V2052 Oph: inhibition of mixing by its magnetic field
We used extensive ground-based multisite and archival spectroscopy to derive
observational constraints for a seismic modelling of the magnetic beta Cep star
V2052 Ophiuchi. The line-profile variability is dominated by a radial mode
(f_1=7.14846 d^{-1}) and by rotational modulation (P_rot=3.638833 d). Two
non-radial low-amplitude modes (f_2=7.75603 d^{-1} and f_3=6.82308 d^{-1}) are
also detected. The four periodicities that we found are the same as the ones
discovered from a companion multisite photometric campaign (Handler et al.
2012) and known in the literature. Using the photometric constraints on the
degrees l of the pulsation modes, we show that both f_2 and f_3 are prograde
modes with (l,m)=(4,2) or (4,3). These results allowed us to deduce ranges for
the mass (M \in [8.2,9.6] M_o) and central hydrogen abundance (X_c \in
[0.25,0.32]) of V2052 Oph, to identify the radial orders n_1=1, n_2=-3 and
n_3=-2, and to derive an equatorial rotation velocity v_eq \in [71,75] km
s^{-1}. The model parameters are in full agreement with the effective
temperature and surface gravity deduced from spectroscopy. Only models with no
or mild core overshooting (alpha_ov \in [0,0.15] local pressure scale heights)
can account for the observed properties. Such a low overshooting is opposite to
our previous modelling results for the non-magnetic beta Cep star theta Oph
having very similar parameters, except for a slower surface rotation rate. We
discuss whether this result can be explained by the presence of a magnetic
field in V2052 Oph that inhibits mixing in its interior.Comment: 12 pages, 6 figures and 5 tables; accepted for publication in MNRAS
on 2012 August 1
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