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91.
Vicente Talanquer Debra Tomanek Ingrid Novodvorsky 《Journal of Science Teacher Education》2007,18(3):399-421
We explore the potential of dilemma analysis as an assessment tool to reveal student teachers’ thinking and concerns about
their practice. For this purpose we analyze the dilemma analyses completed by 22 student teachers enrolled in our science
teacher preparation program over a period of four semesters. Student teachers’ dilemmas fall into two main groups: dilemmas
about student performance and dilemmas associated with instructional decisions. These dilemmas reveal a variety of concerns
that student teachers have about their work. In particular, concerns about lack of student motivation and its consequences
on performance and instruction play a central role in student teachers’ thinking. The recognition of common patterns of thought
in our student teacher thinking has made us reflect on and re-evaluate important components of the curriculum in our science
teacher preparation program. 相似文献
92.
Aldo-Jonathan Muñoz-Vázquez Anand Sánchez-Orta Vicente Parra-Vega 《Journal of The Franklin Institute》2019,356(1):268-275
It is well known that a fractional-order system with a continuous right hand side does not have finite-time stable equilibria, but the discontinuous case has remained elusive in literature. Thus, based on novel mathematical tools, recently published in literature, it is demonstrated that attaining finite-time stable equilibria is not possible for a fractional-order system, not even in the case of an impulsive or discontinuous feedback. In consequence, it is demonstrated that, for a fractional-order system, a Lyapunov stable equilibrium cannot be at the same time finite-time stable. 相似文献
93.
The paper focuses on cluster policies with particular attention to the role of R&D collaborative incentives in the structuring of knowledge networks in clusters. We disentangle the main network failures in regional innovation systems, and discuss the selection procedures designed by policy makers to foster knowledge collaborations. We draw evidence from the French Aerospace Valley cluster from 2006 to 2015. The case study is based on a dataset of 248 granted research consortia, from which we build 4-cohort knowledge networks that enable us evidencing the evolving structural properties of the cluster over time. We suggest avoiding the bias and limitations of 1 and 2-mode network analysis by developing an original place-based network methodology that emphasizes on structural equivalence and groups’ behaviors. We discuss the results focusing on the convergence degree between the structural properties of the cluster selected by the Program and the policy makers’ objectives. Finally, the methodology allows us to identify the agents of the structural and technological changes observed throughout the period. 相似文献
94.
This article analyses the effect of the teaching-learning methods used in Spanish universities on three measures of educational output: average mark, graduates’ assessment of their professional performance in different dimensions, and their assessment of the acquisition of professional competencies and skills. Multi-level models were used in which graduates (first level) are grouped by field of study (second level). The Class attendance and Written work methods have the most influence on the average mark but influence the graduates’ working future the least, as measured with assessments of professional aspects or competencies. In contrast, Problem-based learning, In-company internships and Practical and methodological knowledge are the methods that bear the most influence on the graduates’ professional careers and their development of specific professional competencies. 相似文献
95.
Vicente J. Beltrán-Carrillo José Devís-Devís Carmen Peiró-Velert 《Sport, Education and Society》2018,23(3):257-269
Drawing on semi-structured interviews with older adolescents, this article examines how healthism, ideal body discourses and performative body discourses influence their (non)participation in physical activity (PA) and their identity construction concerning exercise, sport and physical education. We illustrate that body transformation through PA, and related slim body desire and the fear of masculinised female bodies, affect adolescents’ decisions to engage in or drop out of sport. Also, a non-hegemonic body shape combined with a display of low physical competence triggers classmate and teachers’ rejection and marginalisation, affecting adolescents’ construction of embodied identities and preventing them from being active. Finally, adolescents who are competent in sport are less influenced by ideal body discourses than by performative body discourses. We highlight the health promotion effects of these hegemonic discourses and suggest strategies to challenge them. 相似文献
96.
Dorado C Sanchis Moysi J Vicente G Serrano JA Rodríguez LR Calbet JA 《Journal of sports sciences》2002,20(8):591-597
The aim of this study was to determine the effects of long-term professional golf participation on whole-body and regional bone mass and density. Dual-energy X-ray absorptiometry was performed on 15 male professional golfers and 18 sedentary individuals, matched for sex, race, age (29+/-1 and 25+/-1 years, respectively), body mass (79+/-2 and 74+/-2 kg), height (1.78+/-0.01 and 1.77+/-0.02 m) and percent body fat (20+/-2 and 21+/-2%; mean +/- sx). We found that long-term professional golf participation is not associated with significant increments in regional or whole-body bone mass or density. Neither the lumbar spine nor the femoral neck showed any noticeable enhancement of bone mass in professional golfers compared with controls from the same population. The only effect of professional golf participation on regional body composition was a 9% increase in muscle mass in the dominant arm (P < 0.05). 相似文献
97.
Sodium bicarbonate ingestion does not alter the slow component of oxygen uptake kinetics in professional cyclists 总被引:3,自引:0,他引:3
Santalla A Pérez M Montilla M Vicente L Davison R Earnest C Lucía A 《Journal of sports sciences》2003,21(1):39-47
We examined the effects of pre-exercise sodium bicarbonate (NaHCO3) ingestion on the slow component of oxygen uptake (VO2) kinetics in seven professional road cyclists during intense exercise. One hour after ingesting either a placebo or NaHCO3 (0.3 g x kg body mass(-1)), each cyclist (age, 25 +/- 2 years; VO2max, 74.7 +/- 5.9 ml x kg(-1) x min(-1); mean +/- s) performed two bouts of 6 min duration at an intensity of 90% VO2max interspersed by 8 min of active recovery. Gas exchange and blood data (pH, blood lactate concentration and [HCO3-]) were collected during the tests. In both bouts, the slow component of VO2 was defined as the difference between end-exercise VO2 and the VO2 at the end of the third minute. No significant difference was found in the slow component of VO2 between conditions in the first (NaHCO3, 210 +/- 69 ml; placebo, 239 +/- 105 ml) or second trial (NaHCO3, 123 +/- 88 ml; placebo, 197 +/- 101 ml). In conclusion, pre-exercise NaHCO3 ingestion did not significantly attenuate the VO2 slow component of professional road cyclists during high-intensity exercise. 相似文献
98.
Bermejo Vicente Rodrguez Purificacin 《European Journal of Psychology of Education - EJPE》1988,3(1):75-76
European Journal of Psychology of Education - 相似文献
99.
Vicente M. Lechuga 《Higher Education》2014,68(6):909-926
Scholars have offered numerous approaches and best practices for mentoring faculty, many of which have provided valuable insight into the complex nature of the mentoring process. Yet, little attention has been paid to how faculty mentoring practices can influence a mentee’s intrinsic motivation. Through a series of 15 interviews with faculty members from mathematics, engineering, and life science, coupled with the use of self-determination theory, the author demonstrates how disciplinary backgrounds influence their needs for autonomy, competency, and connectedness, which effects their intrinsic motivation to engage in scholarly work. The author highlights three themes that speak to the notion of “non-intrusive” mentoring practices that can help foster and sustain motivation, and argues that future research is needed to shed more light on how disciplinary cultures influence mentoring. 相似文献
100.
Jesús Morenas Martín Vicente Luis Del Campo Marta Leyton Román Juan Miguel Gómez-Valadés Horrillo Juan Santiago Gómez Navarrete 《Journal of sports sciences》2013,31(15):1713-1721
AbstractCurrently, direct empirical evidence exists about the amount of mechanical load that climbers apply to each finger during several hand grips specific to sport climbing, but not yet in a specific hanging position.The objectives of this study are a) to draw and build a solid and rigid support that simulates the real action of a hand grip in a hanging position in sport climbing, to enable the measurement of the mechanical load endured by the fingers in a hanging position and in addition, b) to describe the distribution of mechanical load among fingers as a function of the level of climbing during different hand grips in a hanging position.Thirty young male participants took part in the initial phase of reliability of the measurements, while another 64 male climbers participated in the subsequent study phase to check the relations between independent and dependent variables. The level of on sight climbing and the total practice experience were used to define the groups. The research task consisted of performing hanging positions on the created support in order to measure the mechanical load endured by the fingers in the three most characteristic hand grips in climbing (crimp, half crimp and slope). It has been concluded that the performance level of the climbers had no influence on the production of a pattern of differentiated finger mechanical load during the research task. 相似文献