170 research outputs found
School violence and self-image in adolescents from the region of Murcia (Spain)
Esta investigación pretende estudiar los niveles de violencia percibida y
sufrida en centros escolares, analizar la satisfacción con la autoimagen corporal
y la relación entre estas variables. Es un estudio descriptivo cuya muestra está
compuesta por 284 escolares de la Región de Murcia con edades comprendidas
entre los 12 y 17 años. Se han administrado los cuestionarios BODY SHAPE
self-perceived de Stunkard, Sorensen y Schulsinger (1983) para el análisis de la
autoimagen corporal y el CUVECO de Fernández-Baenal et al. (2011) para la
violencia escolar. Los resultados muestran, sobre la imagen corporal, que existe
un elevado porcentaje de adolescentes que están insatisfechos, especialmente
las chicas, mientras que sobre la violencia escolar se observa una estabilidad en
la evolución de violencia percibida mientras que se produce una disminución de
la violencia sufrida. Por último, se ha registrado el mayor riesgo de formar parte
de los grupos que más violencia sufren entre quienes mayor descontento
muestran con su autoimagenThis investigation aims to study perceived violence and suffered violence levels
in school settings, to analyze satisfaction with body self-image and to explore
the relationship among these variables. It is a descriptive study whose sample
is made up of 284 secondary students from the Region of Murcia aged 12 to 17.
BODY SHAPE self-perceived questionnaire by Stunkard, Sorensen and
Schulsinger (1983) and CUVECO questionnaire by Fernández-Baenal et al.
(2011) were administered to analyze body self-image and school violence
respectively. With regard to their body image the results show that there is a
high percentage of students who are dissatisfied, especially girls. Regarding
school violence levels, students’ perceived violence is stable while suffered
violence decreases progressively. Finally, if students are dissatisfied there is a
higher chance of belonging to groups who suffered more violenc
Differences in forms of organization of the padel lessons with students
El objetivo del presente estudio es conocer los efectos en la cantidad y
eficacia de golpeos y la percepción de satisfacción/diversión, aburrimiento y
esfuerzo a través de cuatro formas de organización diferentes de sesiones de
pádel. Los participantes del estudio fueron 48 estudiantes del Ciclo Formativo de
Técnico en Animación y Actividades Físico Deportivas (33 chicos y 15 chicas),
con edades comprendidas entre los 18 y los 26 años. Se evaluó la cantidad y
eficacia de los golpeos a través de una hoja de observación directa. La
percepción de diversión y aburrimiento fue evaluada a través del Sport
Satisfaction Instrument y la percepción de esfuerzo a través de la Pictorial
Children´s Effort Rating Table. Los resultados obtenidos muestran que la forma
de organización basada en el peloteo entre los alumnos se plantea como la más
eficaz en la enseñanza del pádel, obteniendo un número significativamente
mayor y más eficaz de golpeos, así como valores significativamente superiores
de diversión/satisfacción y esfuerzo e inferiores de aburrimientoThe aim of this study was to determine the effects on the quantity and
effectiveness of strokes and perceived satisfaction / fun, boredom and effort
through four different organizational forms of paddle sessions. Study
participants were 48 students from the Technical Training Course in Animation
and Sports Physical Activities (33 boys and 15 girls) with ages between 18 and
26 years. The amount and effectiveness of beatings through direct observation
of a sheet was evaluated. The perception of fun and boredom was evaluated
through the Sport Satisfaction Instrument and perception of effort through the
Pictorial Children's Effort Rating Table. The results show that the form of
organization based on the rally among students is seen as the most effective in
teaching paddle. A significantly greater and more effective number of strokes
and significantly higher values of amusement / satisfaction and effort and lower
boredom have been proved as a result of this form of organizatio
Review of the Neotropical millipede genus Pycnotropis CARL, 1914 (Diplopoda, Polydesmida, Aphelidesmidae)
A review of Pycnotropis is presented, with the description of 14 new species: P. goeldii n.sp., P. madeira n.sp., P. sigma n.sp. and P. urucu n.sp., all from Brazil, P. carli n.sp. from Ecuador, P. curvata n.sp., P. falcata n.sp., P. jeekeli n.sp., P. pallidicornis n.sp., P. similis n.sp., P. subfalcata n. sp., P. unapi n.sp., P. torresi n.sp. and P. zumbii n.sp., all from Peru. P. acuticollis (ATTEMS, 1899), is redescribed upon the holotype from Brazil. Based on abundant strictly topotypic material, P. tida (CHAMBERLIN, l94l), is considered as a subjective senior synonym of P. epiclysmus HOFFMAN, 1995 (syn.n.). A key has been compiled to all 26 species of this diverse genus, with notes on its distribution
Non-parametric analysis of the rest-frame UV sizes and morphological disturbance amongst L* galaxies at 4<z<8
We present the results of a study investigating the sizes and morphologies of
redshift 4 < z < 8 galaxies in the CANDELS GOODS-S, HUDF and HUDF parallel
fields. Based on non-parametric measurements and incorporating a careful
treatment of measurement biases, we quantify the typical size of galaxies at
each redshift as the peak of the log-normal size distribution, rather than the
arithmetic mean size. Parameterizing the evolution of galaxy half-light radius
as , we find at bright
UV-luminosities () and at faint
luminosities (). Furthermore, simulations based on
artificially redshifting our z~4 galaxy sample show that we cannot reject the
null hypothesis of no size evolution. We show that this result is caused by a
combination of the size-dependent completeness of high-redshift galaxy samples
and the underestimation of the sizes of the largest galaxies at a given epoch.
To explore the evolution of galaxy morphology we first compare asymmetry
measurements to those from a large sample of simulated single S\'ersic
profiles, in order to robustly categorise galaxies as either `smooth' or
`disturbed'. Comparing the disturbed fraction amongst bright () galaxies at each redshift to that obtained by artificially redshifting
our z~4 galaxy sample, while carefully matching the size and UV-luminosity
distributions, we find no clear evidence for evolution in galaxy morphology
over the redshift interval 4 < z < 8. Therefore, based on our results, a bright
() galaxy at z~6 is no more likely to be measured as
`disturbed' than a comparable galaxy at z~4, given the current observational
constraints.Comment: 29 pages, 25 figures, 4 tables, published in MNRA
Evidence for intermediate-age stellar populations in early-type galaxies from K-band spectroscopy
The study of stellar populations in early-type galaxies in different
environments is a powerful tool for constraining their star formation
histories. This study has been traditionally restricted to the optical range,
where dwarfs around the turn-off and stars at the base of the RGB dominate the
integrated light at all ages. The near-infrared spectral range is especially
interesting since in the presence of an intermediate-age population, AGB stars
are the main contributors. In this letter, we measure the near-infrared indices
NaI and D for a sample of 12 early-type galaxies in low density
environments and compare them with the Fornax galaxy sample presented by Silva
et al. (2008). The analysis of these indices in combination with Lick/IDS
indices in the optical range reveals i) the NaI index is a metallicity
indicator as good as C4668 in the optical range, and ii) D is a
tracer of intermediate-age stellar populations. We find that low-mass galaxies
in low density environments show higher NaI and D than those located
in Fornax cluster, which points towards a late stage of star formation for the
galaxies in less dense environments, in agreement with results from other
studies using independent methods.Comment: 7 pages, 3 figures, accepted for publication in ApJ
On the identity of further two millipede species (Diplopoda) from the environs of Manaus, Central Amazonia
The millipede genus Pycnotropis CARL, 1914 is shown to be represented in the floodplains near Manaus by a single, highly variable and obviously eurytopic species which occurs also in secondary upland forest: P. epiclysmus HOFFMAN, 1996 (Polydesmida: Platyrhacidae). To facilitate recognition, especially so vis-a-vis a number of its nominal and by far more poorly known congeners, some of which are possibly its senior synonyms, the variation range of this species is briefly outlined. In addition, a direct, side-by- side re-examination of topotypes of Epinannolene arborea HOFFMAN, 1984 (Spirostreptida: Pseudonannolenidae) and the holotype of Pseudonannolene exilio BRÖLEMANN, 1904, all from Manaus, results in a new formal synonymy and combination: Epinannolene exilio (BRÖLEMANN. 1904), syn. n., comb. n
Daily consumption of a dairy drink enriched with DHA, Vitamins and minerals enhanced nutritional status and cognitive abilities parameters
Preadolescence is a period of growth with special nutritional requirements. In this research we
investigated the effects produced by a 5-month consumption of an enriched dairy drink on biochemical and
cognitive development parameters in children.
Methods: 119 children (8 14y) of both genders (male 49%, female 51%) were randomly distributed into two study groups. The supplemented group (SG, n = 60) consumed 0.6 L/day (breakfast, elevenses and teatime) of an enriched dairy drink containing fish oils (high in DHA), oleic acid, carbohydrates (sugar and honey), vitamins (A, B complex, C, D, and E) and minerals (calcium, phosphorus, zinc) (Puleva Max®). The control group (CG, n = 59) consumed 0.6 L/day of standard whole milk. Both groups received the same dietary advice and consumed the dairy drinks for 5-moths, in addition to their usual diet. Blood samples and psychometric tests (some subscales of W.I.S.C.-IV of Wechsler and EVALUA of Vidal) were taken at 0 and 5 months. RM ANOVA was applied. Data are expressed as mean±SEM.
Results: The consumption of the enriched dairy drink (SG) produced significant (p < 0.05) increases in plasma DHA (20%) and calcium (1.5%). Total proteins (1.9%), transferrine (2.1%), total cholesterol (3.3%) and HDLcholesterol (5.2%), but not LDL-cholesterol, decreased significantly in CG. Regarding psychometric parameters, digits span (working memory test), speed reading and reading comprehension scores showed significant increases in SG at the end of the study (16.8%, 19.1%, and 19.0% respectively) whereas CG only showed higher scores in the reading comprehension test (19.2%).
Conclusion: The dietary supplementation with the enriched dairy drink improved the nutritional and biochemical status and a number of cognitive performance markers in children of 8 and 14 years. Supported by Puleva Food SA.Universidad e Granada
Puleva Biotech S
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