Fault Tree Analysis: An emerging methodology for instructional science     

R. Kent Wood  Kent G. Stephens  Bruce O. Barker 《Instructional Science》1979,8(1):1-22

Fault Tree Analysis is a systematic approach to improving the probability of succes in any system. FTA was first developed as part of the U.S. Space Industry and was applied to such programs as the Minute Man Missile evaluations. Kent G. Stephens has successfully applied the technique to instructional and administrative programs, the latest program being the development of an FTA Institute for the Training Command of the United States Navy. More than a million dollars are being allocated to that program. R. Kent Wood has used the FTA methodology as a tool for a national needs assessment of teacher use of library media centers in the United States (NATUL Project). Bruce Barker has used the FTA methodology in religious education curriculum development. Because of the newness of the Fault Tree Analysis, coupled with its rapid acceptance as a tool for systems analysis and its very different approach of analyzing possible modes of failure in systems to increase the probability of success, this article is timely as the most complete coverage of FTA to date.  相似文献   

A historical reflection on literacy,gender and opportunity: implications for the teaching of literacy in early childhood education     

Rachael Levy 《International Journal of Early Years Education》2016,24(3):279-293

This paper presents a historical reflection on gender and literacy, with a view to informing the present teaching of literacy in early childhood. The relationship between gender, literacy and opportunity in the labour market is examined, given that despite girls’ achievement in literacy, in comparison with boys’, women continue to earn substantially less than men. In order to understand this relationship, this paper reflects on literacy as a socio-historical construct as well as examining the ways in which the past is constitutive in forming enduring notions of gender that penetrate all elements of society, including the literacy classroom. This critical analysis of what is learned about and through the medium of literacy in the early childhood classroom has major implications for the teaching of literacy today. It is argued that in order to address this issue, early childhood educators need to value and nurture children’s digital literacies as well as create learning environments that allow all children genuine opportunities to question, challenge and explore dominant discourses that are embedded in text.  相似文献   

On Becoming Allies: A Qualitative Study of Lesbian‐, Gay‐, and Bisexual‐Affirmative Counselor Training     

Frank R. Dillon  Roger L. Worthington  Holly Bielstein Savoy  S. Craig Rooney  Ann Becker‐Schutte  Rachael M. Guerra 《Counselor Education & Supervision》2004,43(3):162-178

The authors present a qualitative analysis of a process by which a research team of counselors‐in‐training confronted their heterosexist biases while investigating heterosexual attitudes toward sexual minorities. Members of the research team discovered that it was essential to reflect on and evaluate their attitudes, assumptions, and biases before they could conduct scientific research about affirmative attitudes toward lesbian, gay male, and bisexual male and female individuals. Self‐reflective narratives written by each research team member were analyzed using consensual qualitative research methodology. Results yielded 10 general categories or themes. Implications for counseling theory, training, and future research are discussed.  相似文献   

Reflecting on the Use of Writing to Promote Mathematical Learning: An Examination of Preservice Mathematics Teachers' Perspectives     

Rachael Kenney  Melanie Shoffner  David Norris 《The Teacher Educator》2014,49(1):28-43

We examine preservice mathematics teachers' conceptions of writing as a tool for learning mathematics before and after participation in and reflection on writing tasks. We describe the use of two targeted activities incorporated into a secondary methods course: writing to learn mathematics (WTLM) and reflection on that writing. Prior to participation in these activities, the preservice teachers expressed reluctance toward the use of writing in mathematics and uncertainty as to how writing could be useful in mathematics, while accepting that some possible benefits might exist for students' procedural learning. Following participation in these activities, the preservice teachers expressed a willingness to accept writing as a useful tool for supporting an expanded view of teaching and learning mathematics. Specifically, the preservice teachers considered writing as a way to build connections between mathematics and other subjects, a means to assess student understanding of mathematics, and a beneficial support for student conceptual learning.  相似文献   

Using Metaphor Theory to Examine Conceptions of Energy in Biology,Chemistry, and Physics     

Rachael Lancor 《Science & Education》2014,23(6):1245-1267

Energy is one of the most important unifying themes in science. Yet the way energy is conceptualized varies depending on context. In this paper, the discourse used to explain the role of energy in systems from biology, chemistry, and physics is examined from the perspective of metaphor theory. Six substance metaphors for energy are identified in pedagogical discourse (i.e., textbooks and the science education literature): energy as a substance that can be accounted for, can flow, can be carried, can change forms, can be lost, and can be an ingredient, a product or stored in some way. Each of these conceptual metaphors highlight and obscure various characteristics of energy, and provide a set of frameworks that each afford a different understanding of the energy concept.  相似文献   

Creative teaching in STEM     

Vikki Pollard  Rachael Hains-Wesson  Karen Young 《Teaching in Higher Education》2018,23(2):178-193

If Science, Technology, Engineering and Mathematics (STEM) disciplines in higher education are to retain students, there needs to be a shift towards teaching in more enriching and interesting ways. Creative teaching needs to become more prominent in STEM. This article presents a study that defines creative teaching in the STEM context and investigates attempts to teach creatively as experienced by nine STEM educators in an Australian university. The results highlighted that achieving creative teaching is difficult and that the element of surprise is essential. Despite the struggle required, creative teaching afforded fulfilment for teachers. We examine the characteristics of those interviewed and suggest strategies for fostering creative teaching. The findings extend beyond the STEM discipline.  相似文献   

Maternal Stress and Sensitivity: Moderating Effect of Positive Affect     

Cynthia L. Smith  Alise Stephens 《Parenting, science and practice》2018,18(1):1-8

Objective. Stress felt by parents is often negatively related to their ability to engage in optimal parenting; however, research on relations of parenting stress to parenting behaviors typically examines negative associations instead of taking a strengths-based approach. The current study examines longitudinally the role of positive affect as a moderator of the relation of parenting stress to later maternal sensitivity, controlling for prior levels of sensitivity. Design. Maternal positive affect and maternal sensitivity were observed for 93 mother–child dyads during free-play sessions when children were 4- to 5-years-old (T1) and 8- to 9-years-old (T2), respectively. Mothers reported on parenting stress felt from dysfunctional parent–child interactions (T1). Results. Maternal positive affect moderated the association of parenting stress to sensitivity at T2, after controlling for prior levels of sensitivity at T1. Mothers who exhibited low positive affect were less likely to respond sensitively at T2 to their children when parenting stress was high; however, no association was found when positive affect was high. Conclusions. Maternal positive affect may buffer the effect of parenting stress on maternal sensitivity with school-aged children.  相似文献   

Reducing prolonged sedentary time using a treadmill desk acutely improves cardiometabolic risk markers in male and female adults     

Rachael B Champion  Lindsey R Smith  Jennifer Smith  Bogdana Hirlav  Benjamin D Maylor  Stephanie L White 《Journal of sports sciences》2018,36(21):2484-2491

This study evaluated the acute effects of interrupting prolonged sitting with an accumulated 2 h of light-intensity walking on postprandial cardiometabolic risk markers. In this randomised crossover trial, 24 participants (twelve males) aged 18–55 years took part in two, 6.5 h conditions: 1) prolonged sitting (SIT) and 2) sitting interrupted hourly with 20 min light-intensity treadmill desk walking at between 1.2–3.5 km/h^?1 (INT-SIT). Standardized meals were provided at 0 h and 3 h. Blood samples and blood pressure measures were taken hourly. Statistical analyses were completed using linear mixed models. Postprandial incremental area under the curve responses (mmol/L?6.5 h) for glucose (4.52 [3.47, 5.56] and 6.66 [5.62, 7.71] for INT-SIT and SIT, respectively) and triglycerides (1.96 [0.96, 2.96] and 2.71 [1.70, 3.71] for INT-SIT and SIT, respectively) were significantly lower in INT-SIT than SIT. Mean systolic and diastolic blood pressure responses were lower by 3% and 4%, respectively, in INT-SIT than SIT (P < 0.05). There was no significant condition x sex interaction effect for any outcomes (P > 0.05). These findings suggest that interrupting sitting with an accumulated 2 h of light-intensity walking acutely improves cardiometabolic risk levels in males and females compared with prolonged sitting.  相似文献   

Psychosocial development through Masters sport: What can be gained from youth sport models?     

Rylee A. Dionigi  Rachael C. Stone  Amy M. Gayman 《Journal of sports sciences》2018,36(13):1533-1541

Although sport participation is encouraged throughout the lifespan, little research has been conducted on the role of sport in development later in life. This qualitative study explored adults’ experiences of development within the context of Masters sport. We interviewed 14 adults (nine men and five women) aged 46–61 years involved in Masters sport. Data was interpreted drawing upon frameworks from youth sport (i.e., Personal Assets Framework for Sport; Côté, J., Bruner, M., Strachan, L., Erickson, K., & Fraser-Thomas, J. (2010). Athletes’ development and coaching. In J. Lyle & C. Cushion (Eds.), Sport coaching: Professionalism and practice (pp. 63–83). Oxford, UK: Elsevier, Côté, J., Turnnidge, J., & Evans, M. B. (2014). The dynamic process of development through sport. Kinesiologia Slovenica, 20(3), 14–26, Côté, J., Turnnidge, J., & Vieerima, M. (2016). A personal assets approach to youth sport. In K. Green & A. Smith (Eds.), Routledge handbook of youth sport (pp. 243–255). New York, NY: Routledge; 4/5Cs of positive youth development; Lerner, R. M., Fisher, C. B., & Weinberg, R. A. (2000). Toward a science for and of the people: Promoting civil society through the application of developmental science. Child Development, 71(1), 11–20. doi:10.1111/1467-8624.00113; Vierimaa, M., Erickson, K., Côté, J., & Gilbert, W. (2012). Positive youth development: A measurement framework for sport. International Journal of Sports Science & Coaching, 7(3), 601–614. doi:10.1260/1747-9541.7.3.601), combined with past research on mid-life and older athletes. Six key themes emerged as contributing to adults’ personal development through sport: competence and confidence, character, commitment, connection, cognition, and challenge. Masters sport contexts appeared to facilitate changes in assets (i.e., 6Cs) similar to those within youth sport, but assets often held different meanings within the context of later life. Applying frameworks from youth sport and developmental psychology to Masters sport contexts appears useful. The current findings support the modification of existing models and highlight their potential in identifying lifelong developmental outcomes of sport participation.  相似文献   

A tool to profile neural,sensory and motor development in children at school entry,identifying possible barriers to learning and emotional well-being in early childhood     

Penelope Hannant  Rachael Gartland  Helen Eales  Sophia Mooncey 《Support for Learning》2023,38(4):167-177

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