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91.
Tania C. Ara��jo-Jorge Tania S. Cardona Cl��udia L. S. Mendes Andrea Henriques-Pons Rosane M. S. Meirelles Cl��udia M. L. M. Coutinho Luiz Edmundo V. Aguiar Maria de Nazareth L. Meirelles Solange L. de Castro Helene S. Barbosa Mauricio R. M. P. Luz 《CBE life sciences education》2004,3(2):99-110
The advent of genomics, proteomics, and microarray technology has brought much
excitement to science, both in teaching and in learning. The public is eager to
know about the processes of life. In the present context of the explosive growth
of scientific information, a major challenge of modern cell biology is to
popularize basic concepts of structures and functions of living cells, to
introduce people to the scientific method, to stimulate inquiry, and to analyze
and synthesize concepts and paradigms. In this essay we present our experience
in mixing science and education in Brazil. For two decades we have developed
activities for the science education of teachers and undergraduate students,
using microscopy images generated by our work as cell biologists. We describe
open-air outreach education activities, games, cell modeling, and other
practical and innovative activities presented in public squares and
favelas. Especially in developing countries, science education is
important, since it may lead to an improvement in quality of life while
advancing understanding of traditional scientific ideas. We show that teaching
and research can be mutually beneficial rather than competing pursuits in
advancing these goals. 相似文献
92.
A critical and more nuanced understanding of the multifaceted relationship between projects of peacebuilding and educational provision is starting to develop. Drawing on an epistemological and ontological anchor of critical realism, and a methodology informed by the application of cultural political economy analysis and the strategic relational approach to understanding educational discourses, processes and outcomes, we illustrate how the ‘many faces’ of education in conflict-affected situations can be better theorised and conceptually represented. In doing so, we link goals of peacebuilding to those of social justice, and reinvigorate the notion of education playing a transformative rather than a restorative role in conflict-affected contexts. Making such ideas concrete, we provide examples of how such an analytical framework can be employed to understand the multi-faceted relationship between education and projects of social transformation in conflict-affected environments across the globe. 相似文献
93.
94.
Evagelia Lappa Artemis Chaleplioglou Gaetana Cognetti Maurella Della Seta Federica Napolitani Cheyne Veronica Juan‐Quilis Laura Muñoz‐Gonzalez Sílvia Lopes 《Health information and libraries journal》2012,29(4):338-343
This is the fourth in a series of articles exploring international trends in health science librarianship in four Southern European countries in the first decade of the 21st century. The invited authors are from Greece, Italy, Spain and Portugal. Future issues will track trends in Latin America and Central Europe. JM 相似文献
95.
Johannes Hack Andre Rupp Daniel Memmert 《Research quarterly for exercise and sport》2013,84(4):727-738
In this study, we examined attention processes in complex, sport-specific decision-making tasks without interdependencies from anticipation. Psychophysiological and performance data recorded from advanced and intermediate level basketball referees were compared. Event-related potentials obtained while judging game situations in foul recognition and a control task provided insight into focus of attention, selective attention, and processing strategy (top-down vs. bottom-up). Results showed task-specific effects for advanced referees in components influenced by attentional focus and selective attention. Experts also seemed to profit from superior top-down strategy and were able to evaluate the stimuli more rapidly. These findings are discussed in connection with current models in neurosciences and theories of referee research. 相似文献
96.
Giovani Cunha Thiago Lorenzi Katiuce Sapata Andre Luiz Lopes Adroaldo Cezar Gaya 《Journal of sports sciences》2013,31(10):1029-1039
Abstract In this study, we investigated the effect of biological maturation on maximal oxygen uptake ([Vdot]O2max) and ventilatory thresholds (VT1 and VT2) in 110 young soccer players separated into pubescent and post-pubescent groups.. Maximal oxygen uptake and [Vdot]O2 corresponding to VT1 and VT2 were expressed as absolute values, ratio standards, theoretical exponents, and experimentally observed exponents. Absolute [Vdot]O2 (ml · min?1) was different between groups for VT1, VT2, and [Vdot]O2max. Ratio standards (ml · kg?1 · min?1) were not significantly different between groups for VT1, VT2, and [Vdot]O2max. Theoretical exponents (ml · kg?0.67 · min?1 and ml · kg?0.75 · min?1) were not properly adjusted for the body mass effects on VT1, VT2, and [Vdot]O2max. When the data were correctly adjusted using experimentally observed exponents, VT1 (ml · kg?0.94 · min?1) and VT2 (ml · kg?0.95 · min?1) were not different between groups. The experimentally observed exponent for [Vdot]O2max (ml · kg?0.90 · min?1) was different between groups (P = 0.048); however, this difference could not be attributed to biological maturation. In conclusion, biological maturation had no effect on VT1, VT2 or [Vdot]O2max when the effect of body mass was adjusted by experimentally observed exponents. Thus, when evaluating the physiological performance of young soccer players, allometric scaling needs to be taken into account instead of using theoretical approaches. 相似文献
97.
Abstract The aim of the study was to evaluate the short and medium term use of personalised insoles, produced by combining additive manufacturing (AM) with three-dimensional (3-D) foot scanning and computer aided design (CAD) systems. For that, 38 runners (19 pairings) were recruited. The experimental conditions were: personalised and control. The personalised condition consisted of trainers fitted with personalised glove fit insoles manufactured using AM and using foot scans to match the plantar geometry of the feet. The control condition consisted of the same trainers fitted with insoles also manufactured using AM but using scans of the original insole shape. Participants were allocated to one of the experimental conditions and wore the trainers for 3 months. Over this period they attended three laboratory sessions (at months 0, 1.5 and 3) and completed an Activity Diary after each training session. The footwear was evaluated in terms of discomfort and biomechanics. Lower discomfort ratings were found in the heel area (P ≤ 0.05) and for overall fit (P ≤ 0.05), with the personalised insole. However, discomfort was reported under the arch region for both conditions. With regard to the biomechanical data, differences between conditions were detected for ankle dorsiflexion at footstrike (P ≤ 0.05), maximum ankle eversion (P ≤ 0.05) and peak mean pressure under the heel (P ≤ 0.01): the personalised condition had lower values which may reduce injury risk. The personalisation of the geometry of insoles through advances in AM together with 3-D scanning and CAD technologies can provide benefits and has potential. 相似文献
98.
Felipe Arruda Moura Luiz Eduardo Barreto Martins Ricardo O. Anido Paulo Régis C. Ruffino Ricardo M. L. Barros Sergio Augusto Cunha 《Journal of sports sciences》2013,31(14):1568-1577
Abstract The purposes of this study were to characterise the total space covered and the distances between players within teams over ten Brazilian First Division Championship matches. Filmed recordings, combined with a tracking system, were used to obtain the trajectories of the players (n = 277), before and after half-time. The team surface area (the area of the convex hull formed by the positions of the players) and spread (the Frobenius norm of the distance-between-player matrix) were calculated as functions of time. A Fast Fourier Transform (FFT) was applied to each time series. The median frequency was then calculated. The results of the surface area time series median frequencies for the first half (0.63 ± 0.10 cycles · min?1) were significantly greater (P < 0.01) than the second-half values (0.47 ± 0.14 cycles · min?1). Similarly, the spread variable median frequencies for the first half (0.60 ± 0.14 cycles · min?1) were significantly greater (P < 0.01) than the second-half values (0.46 ± 0.16 cycles · min?1). The median frequencies allowed the characterisation of the time series oscillations that represent the speed at which players distribute and then compact their team formation during a match. This analysis can provide insights that allow coaches to better control the team organisation on the pitch. 相似文献
99.
Paula Clara Santos Sandra Abreu Carla Moreira Diana Lopes Rute Santos Odete Alves 《Journal of sports sciences》2013,31(14):1398-1408
AbstractThe aims of the this prospective study were to analyse physical activity (PA) engagement during the first and second trimesters, considering the different guidelines published on PA, to document the individual characteristics associated with the accomplishment of these guidelines and to examine pregnant women’s perceived barriers to leisure PA, using a socioecological framework. A sample of 133 pregnant women in two stages – at 10–12 weeks’ gestation (T1) and 20–22 weeks’ gestation (T2) – were evaluated. PA was assessed by accelerometry during the T1 and T2 evaluation stages. Socio-demographic characteristics, lifestyle factors and barriers to leisure PA were assessed via questionnaire. A large proportion of women (ranging from 32% to 96%) did not reach the levels of PA recommended by the guidelines. There were no significant differences between T1 and T2 with regard to compliance with PA recommendations. A decrease in PA levels from T1 to T2 was noted for all recommendations. No associations were found between participants’ characteristics and adherence to the recommendations in T1 and T2. No significant differences were found in barriers to leisure PA between T1 and T2. The most commonly reported barriers to leisure PA were intrapersonal, not health related. Our results indicate that there were no differences between trimesters regarding compliance of PA recommendations, and perceived barriers were similar in both trimesters. 相似文献
100.
The aim of this study was to determine the influence of breathing frequency and tidal volume on resting heart rate variability in children aged 9 years ( n = 29) and 16 years ( n = 19). Heart rate variability was measured in four conditions: (1) without the control of ventilation followed at random by (2) a fixed breathing frequency of 12 breaths· min -1 , (3) a breathing frequency of 12 breaths· min -1 but with a fixed tidal volume of 30% vital capacity and (4) a fixed breathing frequency of 6 breaths·min -1 and a tidal volume of 30% vital capacity. A total of 128 RR intervals (the time between two spikes in the heart rate) were detected and absolute high- and low-frequency spectral components were calculated using autoregressive modelling. The younger children were unable to control ventilation to achieve conditions 3 and 4; therefore, a 2 2 2 (group 2 condition) analysis of variance was used to analyse conditions 1 and 2. There were significant interactions between group and heart rate variability conditions for the low-frequency component and the ratio of low to high frequencies ( P ? 0.001). The main effect for condition showed that at 12 breaths· min -1 with no fixed tidal volume there was a significantly higher standard deviation of the RR interval, total power and high-frequency ( P ? 0.01) and lowfrequency spectral components ( P ? 0.05) than in the condition with no ventilatory control. Across the four breathing conditions for the older participants, the high-frequency spectral component was significantly higher in the condition at 6 breaths· min -1 with a fixed tidal volume than in that with no ventilatory control ( P ? 0.005); the ratio of high to low frequencies was significantly lower for the spontaneous condition than those performed at 12 breaths· min -1 ( P ? 0.001). The results provide evidence of the need for ventilatory control when assessing short-term resting heart rate variability in children. 相似文献