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41.
Paulo Cardoso José Ferreira Marques 《International Journal for Educational and Vocational Guidance》2008,8(1):49-61
Differences of gender and ethnicity were examined in terms of the perception of barriers to career development. The Perception of Career Barriers Inventory (IPBC) was administered to a sample of 457 ninth grade students in Portuguese state schools. Gender differences were found, with girls generally scoring higher and in particular on some specific scales. African ethnic participants score higher than Portuguese participants across all the IPBC scales. These findings are more obvious with African participants born in Africa than with those born in Portugal. Implications for future research and practice are discussed. 相似文献
42.
We investigated the initial development of reading and spelling in European Portuguese. First-graders, tested in February
and June, had to read and spell words and pseudowords. In February there were regularity and graphemic complexity effects,
indicating that these children relied on grapheme–phoneme conversion. The lexicality effect found in spelling, in June, suggest
that by the end of first grade these children had begun to construct an orthographic lexicon. However, lexical addressing
is not inconsistent with phonological mediation as regularization errors increased between the sessions. Additionally, the
previously reported similarity in global performance of Portuguese and French beginning readers may conceal processing differences
that are related to specific characteristics of the corresponding orthographic codes.
相似文献
Sandra FernandesEmail: |
43.
We show that the treatment of pendulum movement, other than the linear approximation,may be an instructive experimentally based introduction to the physics of non-lineareffects. Firstly the natural frequency of a gravitational pendulum is measured as functionof its amplitude. Secondly forced oscillations of a gravitational pendulum are investigatedexperimentally without limiting amplitudes. By this arrangement new phenomena, thebistability and the jump-effect, can be observed. In the case of bistability the drivengravitational pendulum can oscillate in two different stable modes. Either it oscillateswith a small amplitude and approximately in phase with the exciting torque or it oscillateswith a larger amplitude and approximately anti-phase. The jump effect is the spontaneoustransition from one mode of oscillation to the other. Both effects can be demonstrated andexplained. 相似文献
44.
Paulo Faustino 《媒体管理杂志》2013,15(4):151-163
The main objectives of this article are to analyse (a) some media group strategic corporate management options, especially within the television segment; (b) as well as identify critical success factors to achieve leadership. Some future challenges are also identified within the scope of new broadcasting technologies such as Internet protocol television, cable, satellite, and digital terrestrial television. 相似文献
45.
Miguel Sordi Bortolini Junior Guilherme Gularte De Agostini Ismair Teodoro Reis Romeu Paulo Martins Silva Lamounier Jeffrey B. Blumberg Foued Salmen Espindola 《Research quarterly for exercise and sport》2013,84(3):604-610
Saliva provides a convenient and noninvasive matrix for assessing specific physiological parameters, including some biomarkers of exercise. We investigated whether the total protein concentration of whole saliva (TPWS) would reflect the anaerobic threshold during an incremental exercise test. After a warm-up period, 13 nonsmoking men performed a maximum incremental exercise on a cycle ergometer. Blood and stimulated saliva were collected during the test. The TPWS anaerobic threshold (PAT) was determined using the Dmax method. The PAT was correlated with the blood lactate anaerobic threshold (AT; r = .93, p < .05). No significant difference (p = .16) was observed between PAT and AT. Thus, TPWS provides a convenient and noninvasive matrix for determining the anaerobic threshold during incremental exercise tests. 相似文献
46.
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
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Paulo Vitor da Silva Romero Débora Alves Guariglia Francielli Ferreira Da Rocha Caroline de Carvalho Picoli Gustavo Renan Gilio Gabriel Sergio Fabricio 《Journal of sports sciences》2018,36(14):1578-1585
The present study aimed to determine the effects of physical training performed by parents on mice offspring adiposity. Male and female parents underwent an aerobic training protocol for 7 weeks. The trained and sedentary parents were allowed to mate and the resultant offspring divided in: S (Offspring from Sedentary Parents), T (Offspring from Trained Parents), ST (Offspring from Sedentary Father and Trained Mother) and TS (Offspring from Trained Father and Sedentary Mother). After weaning, offspring was euthanized, blood collected and samples of mesenteric and inguinal fat pads used to isolate adipocytes for morphologic and histological analyses. Lee index, mesenteric fat pad, sum of visceral fat and total fat weight of female T was reduced in comparison to the other groups (p < 0.05). Periepididymal and sum of visceral fat in male T group was also reduced when compared to the other groups (p < 0.05). The diameter of mesenteric and inguinal adipocytes of T group was smaller compared to all groups comparisons for both sexes (p < 0.05). In summary, exercise training performed by parents reduced visceral offspring adiposity, the diameter of subcutaneous adipocytes and improved metabolic parameters associated to metabolic syndrome. 相似文献
50.
Karina L. R. Canabrava Fernanda R. Faria Jorge R. P. de Lima Dartagnan P. Guedes Paulo R. S. Amorim 《Research quarterly for exercise and sport》2018,89(1):47-56
Purpose: This study aimed to compare the energy expenditure and intensity of active video games to that of treadmill walking in children and adolescents. Method: Seventy-two boys and girls (aged 8–13 years) were recruited from local public schools. Energy expenditure and heart rate were measured during rest, during 3-km/hr, 4-km/hr, and 5-km/hr walks, and during active games (Adventure, Boxing I, Boxing II, and Dance). During walking and active games, we also assessed physical activity using an accelerometer. Results: The energy expenditure of the active games Adventure, Boxing I, Boxing II, and Dance was similar to that of treadmill walking at 5 km/hr in boys and girls. Heart rate was significantly higher for the game Adventure compared with walking at 3 km/hr, 4 km/hr, and 5 km/hr and the game Dance in both genders. The heart rate of girls during the games Adventure and Dance was significantly higher compared with boys. There was a statistically significant difference (p < .05, with an effect size ranging from 0.40 to 3.54) in the counts·min?1, measured through accelerometry, between activities. Conclusion: XBOX 360 Kinect games provide energy expenditure and physical activity of moderate intensity for both genders. The use of active video games can be an interesting alternative to increase physical activity levels. 相似文献