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1.
Research in Higher Education - Research consistently shows that higher-education participation has positive impacts on individual outcomes. However, few studies explicitly consider differences in...  相似文献   
2.
Given the progressive loss of influence for the school relative to television in youngsters’ everyday lives, this article describes the procedure and the results of including cartoons in the physics curriculum in secondary education. Work was carried out intensively with a small group of pupils and sporadically with a larger group. In the first case, cartoons were used for identifying and discussing fictitious phenomena, problem‐solving, and assessment of the learning. In the second case, for identifying and discussing fictitious phenomena, a quasi‐experimental research design was followed. The results back the use of this didactic tool as an element for motivating and invigorating the classroom, for identifying the pupils’ alternative ideas and the assessment of their learning, as well as for a more critical way of watching television.  相似文献   
3.
Abstract

Many parameters may be used to measure the deterioration of water quality. One very important parameter is total dissolved solids (TDS). An increase in TDS beyond acceptable levels can have a significant impact on municipal, industrial, and agricultural use of water. In this review an overview of the problem of high TDS levels is given. Factors related to TDS which are considered include: (a) laboratory determination, (b) natural and man-influenced sources, (c) adverse effects, and (d) treatment process removal techniques. A brief summary of the TDS problem associated with the Colorado River is also considered.  相似文献   
4.
This work describes the genesis, articulation and consolidation from 2007 of a social network of b-learning （blended learning） in the UA （University of Alicante） （Spain）, with the institutional backing of the Office of the Vice President for Education Technology and Innovation, and the momentum and advice of professor Angel Fidalgo （UNESCO （United Nations Educational, Scientific and Cultural Organization） chair for University of Management and Policy）. The social network currently has more than 25 teachers, working on different work linkages with the university, implementing or intending to apply the teaching methodologyb-learning during the course 2007-2008 in a variety of courses and degrees. To do so, several resource centers （blogs, wikis, Wimba Create （before CourseGenie）, etc.）, and digital platforms （Virtual Campus of the UA, Moodle, etc.） are used.  相似文献   
5.
This paper presents findings about the images of science drawn upon in laboratory work, by upper secondary and university students, in academic streams with a science focus. Data were collected through four written questions, administered to a total of 368 students. The questions all required students to comment on laboratory investigations carried out by research scientists or by science students. We show that students' reasoning has an epistemological and an ontological dimension, and that it often differs significantly from accepted perspectives on the nature of science. The issue for teaching appears to be showing students what counts (and what does not count) as appropriate reasoning in actual situations. In other words, explicit teaching about the various relationships that can exist between theory and data would transform labwork towards a more critical process that involves making and justifying decisions.  相似文献   
6.
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7.
This study combines minority stress and ecological perspectives to theorize the associations between adolescents’ sexual orientation and time use. Hypotheses are tested using data from a national sample of Australian adolescents aged 14–15 years (Longitudinal Study of Australian Children; n = 3,060). Compared to heterosexual adolescents, sexual minority adolescents spent less time with their siblings and fathers, more time alone, less time in active leisure- and school-based activities, and more time in nonactive leisure. There were no differences between sexual minority and heterosexual adolescents in time spent with mothers, peers, and in screen-based leisure. Some associations were gendered. Collectively, the results suggest that sexual minority adolescents may withdraw or be excluded from critical developmental activities and the company of key social partners.  相似文献   
8.

The topic of geometrical optics was chosen to diagnose the preconceptions of 44 trainee teachers in this subject area. The scores obtained from a pretest were examined with respect to several variables describing cognitive, academic and social factors. The results suggest that both students’ level of cognitive development and their pre‐knowledge should be taken into account in developing an integrating paradigm for science teaching. Cognitive style appears as a further variable to be considered in this.  相似文献   
9.
Abstract

Indigenous groups in Latin America face a double exclusion from higher education, with low levels of access to institutions and little acknowledgement of their distinctive cultural and epistemological traditions within the curriculum. This article assesses current policies in Mexico and Brazil towards indigenous populations in higher education, considering the various responses to the challenge, including affirmative action programmes in mainstream universities, intercultural courses and autonomous institutions. These policies and initiatives are analysed using the theoretical frames of redistribution and recognition, focusing on demands for formal equality and material wellbeing on the one hand, and a distinctive cultural and educational space on the other. While state-sponsored policies focus primarily on the redistributive element, initiatives based on recognition come largely from autonomous organisations, raising a series of dilemmas and tensions around educational justice for indigenous populations in the region.  相似文献   
10.
Purpose: The purposes of this study were to (a) investigate the effect of physical effort (cycling for 60 min at 60 ± 5% of individually computed reserve heart-rate capacity), combined with 2 different levels of cognitive demand (2-back, oddball), on intraocular pressure (IOP) and subjective judgments of perceived exertion (ratings of perceived exertion [RPE]), affect (Affective Valence subscale of the Self-Assessment Manikin [SAM]), and mental workload (National Aeronautics and Space Administration Task Load Index [NASA-TLX]); and (b) ascertain whether baseline IOP, measured before exercise, is associated with individual differences in subjective assessments of effort and affective response during exercise. Method: Seventeen participants (Mage = 23.28 ± 2.37 years) performed 2 physical/cognitive dual tasks, matched in physical demand but with different mental requirements (2-back, oddball). We assessed IOP before exercise, after 2 min of active recovery, and after 15 min of passive recovery, and we also collected RPE and SAM measures during the sessions (28 measurement points). We used NASA-TLX and cognitive performance as checks of the mental manipulation. Results: (a) Intraocular pressure increased after concomitant physical/mental effort, with the effect reaching statistical significance after the 2-back task (p = .002, d = 0.35) but not after the oddball condition (p = .092, d = 0.29). (b) Baseline IOP was associated with subjective sensitivity to effort and showed statistical significance for the oddball condition (p = .03, ?p2 = .622) but not for the 2-back task (F < 1). Conclusions: Results suggest a relationship between IOP and physical/cognitive effort, which could have implications for the management of glaucoma. Additionally, a rapid measure of IOP could be used as a marker of individual effort sensitivity in applied settings.  相似文献   
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