814 research outputs found
Conceptions of teaching quality in public higher education institutions in the Alentejo region
Este estudo teve como objectivos conhecer e comparar as concepções sobre qualidade de ensino
de docentes e estudantes de estabelecimentos públicos de ensino superior da região do Alentejo.
Tratou-se de um estudo qualitativo, que incluiu uma análise de conteúdo a uma questão aberta
relativa ao modo como 427 estudantes e 103 docentes definiam qualidade de ensino. A análise
de conteúdo baseou-se nos modelos teóricos disponíveis, nas actividades previstas para o ensino
superior e, sobretudo, no conteúdo das respostas escritas dos participantes. Os resultados
revelaram que as respostas de docentes e estudantes das três instituições, globalmente
consideradas, não diferiam substancialmente umas das outras e que a qualidade de ensino era
mais associada a aspectos de natureza pedagógica, preparação para o mercado de trabalho,
articulação com a comunidade e qualificação dos docentes do que com aspectos associados à
investigação
Conceptions about the teaching quality in higher education in public establishments in Portugal
Este estudo tem como objectivos conhecer e comparar as
concepções sobre a qualidade de ensino de docentes e estudantes de três
estabelecimentos públicos de ensino superior da região do Alentejo
(Portugal) e, no caso dos docentes, conhecer também o que eles sugerem
para melhorar a qualidade de ensino nos cursos e nas instituições em que
leccionam. Trata-se de um estudo qualitativo, que inclui uma análise de
conteúdo de três questões abertas relativas ao modo como 427 estudantes
e 103 docentes definem qualidade de ensino e como os docentes
sugerem que seja melhorada no curso e na instituição. A análise de
conteúdo baseia-se nos modelos teóricos disponíveis, nas actividades
previstas para os docentes do ensino superior e, sobretudo, no conteúdo
das respostas escritas dos participantes. Os resultados revelam que as
respostas de docentes e estudantes dos três estabelecimentos não
diferem substancialmente umas das outras e que a qualidade de ensino
é mais associada a aspectos de natureza pedagógica, preparação para o
mercado de trabalho, articulação com a comunidade e qualificação dos
docentes do que com aspectos associados à investigação
The Gaia-ESO Survey: membership and Initial Mass Function of the Gamma Velorum cluster
Understanding the properties of young open clusters, such as the Initial Mass
Function (IMF), star formation history and dynamic evolution, is crucial to
obtain reliable theoretical predictions of the mechanisms involved in the star
formation process. We want to obtain a list, as complete as possible, of
confirmed members of the young open cluster Gamma Velorum, with the aim of
deriving general cluster properties such as the IMF. We used all available
spectroscopic membership indicators within the Gaia-ESO public archive together
with literature photometry and X-ray data and, for each method, we derived the
most complete list of candidate cluster members. Then, we considered
photometry, gravity and radial velocities as necessary conditions to select a
subsample of candidates whose membership was confirmed by using the lithium and
H lines and X-rays as youth indicators. We found 242 confirmed and 4
possible cluster members for which we derived masses using very recent stellar
evolutionary models. The cluster IMF in the mass range investigated in this
study shows a slope of for and
for and is consistent with a standard
IMF. The similarity of the IMF of the young population around Vel to
that in other star forming regions and the field suggests it may have formed
through very similar processes.Comment: Accepted for publication in A&A; 18 pages, 11 figures, 5 table
A Experiência da Emergência Pré-Hospitalar da Unidade de Socorro de Faro da Cruz Vermelha Portuguesa no apoio a grandes eventos
Relata-se a experiência da Unidade de Socorro da Delegação Distrital de Faro da Cruz Vermelha Portuguesa na organização e na montagem de um dispositivo médico e socorrista, para apoio aos
participantes da Concentração de Motos de Faro, que decorre desde há longos anos em estreita colaboração com o Motoclube de Faro e as Unidades de Saúde da zona
The Gaia-ESO Survey: metallicity of the Chamaeleon I star forming region
Context. Recent metallicity determinations in young open clusters and
star-forming regions suggest that the latter may be characterized by a slightly
lower metallicity than the Sun and older clusters in the solar vicinity.
However, these results are based on small statistics and inhomogeneous
analyses. The Gaia-ESO Survey is observing and homogeneously analyzing large
samples of stars in several young clusters and star-forming regions, hence
allowing us to further investigate this issue.
Aims. We present a new metallicity determination of the Chamaeleon I
star-forming region, based on the products distributed in the first internal
release of the Gaia-ESO Survey.
Methods. 48 candidate members of Chamaeleon I have been observed with the
high-resolution spectrograph UVES. We use the surface gravity, lithium line
equivalent width and position in the Hertzsprung-Russell diagram to confirm the
cluster members and we use the iron abundance to derive the mean metallicity of
the region.
Results. Out of the 48 targets, we confirm 15 high probability members.
Considering the metallicity measurements for 9 of them, we find that the iron
abundance of Chamaeleon I is slightly subsolar with a mean value
[Fe/H]=-0.08+/-0.04 dex. This result is in agreement with the metallicity
determination of other nearby star-forming regions and suggests that the
chemical pattern of the youngest stars in the solar neighborhood is indeed more
metal-poor than the Sun. We argue that this evidence may be related to the
chemical distribution of the Gould Belt that contains most of the nearby
star-forming regions and young clusters.Comment: 13 pages, 11 figures, 3 tables, Accepted for publication in Astronomy
& Astrophysic
The Gaia-ESO Survey: Chromospheric Emission, Accretion Properties, and Rotation in Velorum and Chamaeleon I
We use the fundamental parameters delivered by the GES consortium in the
first internal data release to select the members of Vel and Cha I
among the UVES and GIRAFFE spectroscopic observations. A total of 140
Vel members and 74 Cha I members were studied. We calculated stellar
luminosities through spectral energy distributions, while stellar masses were
derived by comparison with evolutionary tracks. The spectral subtraction of
low-activity and slowly rotating templates, which are rotationally broadened to
match the of the targets, enabled us to measure the equivalent widths
(EWs) and the fluxes in the H and H lines. The H line
was also used for identifying accreting objects and for evaluating the mass
accretion rate (). The distribution of for the
members of Vel displays a peak at about 10 km s with a tail
toward faster rotators. There is also some indication of a different
distribution for the members of its two kinematical populations. Only a handful
of stars in Vel display signatures of accretion, while many more
accretors were detected in the younger Cha~I. Accreting and active stars occupy
two different regions in a -flux diagram and we propose a
criterion for distinguishing them. We derive in the ranges
-yr and -yr
for Vel and Cha I accretors, respectively. We find less scatter in the
relation derived through the H EWs, when
compared to the H diagnostics, in agreement with other authors
Designing electronic collaborative learning environments
Electronic collaborative learning environments for learning and working are in vogue. Designers design them according to their own constructivist interpretations of what collaborative learning is and what it should achieve. Educators employ them with different educational approaches and in diverse situations to achieve different ends. Students use them, sometimes very enthusiastically, but often in a perfunctory way. Finally, researchers study them and—as is usually the case when apples and oranges are compared—find no conclusive evidence as to whether or not they work, where they do or do not work, when they do or do not work and, most importantly, why, they do or do not work. This contribution presents an affordance framework for such collaborative learning environments; an interaction design procedure for designing, developing, and implementing them; and an educational affordance approach to the use of tasks in those environments. It also presents the results of three projects dealing with these three issues
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