Validity of the VmaxST portable metabolic measurement system   总被引：1，自引：0，他引：1  

Laurent CM  Meyers MC  Robinson CA  Strong LR  Chase C  Goodwin B 《Journal of sports sciences》2008,26(7):709-716

The aim of this study was to assess and compare the validity of the portable VmaxST telemetry metabolic measurement device with that of a standard measurement system (Vmax29). Thirty asymptomatic, moderately active males provided written, informed consent and completed two maximal graded treadmill exercise tests (Bruce) using the VmaxST and the Vmax29 metabolic measurement systems. Tests were performed in random order on separate days to obtain peak values for time to exhaustion, heart rate, systolic and diastolic blood pressure, oxygen consumption (VO2), carbon dioxide production (VCO2), ventilation (VE), and respiratory exchange ratio (RER). Multivariate analysis of variance revealed no significant main effect (P = 0.88) between the two systems across any variable, suggesting similar measurement capabilities between the two systems. Linear regression analyses revealed moderate to high coefficients of determination for VO2 (r2 = 0.99), VCO2 (r2 = 0.99), VE r2 = 0.99), and RER (r2 = 0.89). Furthermore, Bland-Altman analyses demonstrated that the VmaxST yielded similar values to the Vmax29, suggesting good agreement between the two systems. Agreement was confirmed when the differences between the methods resulted in a small range as identified by the 95% limits of agreement. Findings from the current study confirm that the VmaxST is a valid device for measuring metabolic and physiological variables during exercise within a controlled laboratory setting.  相似文献   

A pragmatic epistemology for free‐choice learning     

Ronald B. Meyers 《Environmental Education Research》2005,11(3):309-320

A critical review of the epistemological foundations of free‐choice learning (FCL) theory was undertaken to evaluate how this theory treats knowledge, whatever importance we might attach to it. It is argued here that free‐choice learning has great promise yet would benefit from theoretical adjustments that modify Vygotsky’s learning theory by using Dewey’s pragmatic epistemological theories. It is suggested that the concept of intramental knowledge in free‐choice learning needs to be grounded on Dewey’s pragmatic conceptions of knowledge, in order to valorise the learner’s own knowledge, and their volitional activity in choosing their beliefs, and to provide a more robust foundation for the conceptualization of knowledge. It is further argued that the notion of intermental knowledge needs significant adjustment, as it seems implausible that knowledge actually exists between people. However, in order to keep the focus of free‐choice learning on the importance of social exchanges in learner construction of knowledge, Dewey’s compatible notion of the importance of the learning exchange is proposed as a substitute for intermental knowledge. It is also suggested that there is a need for additional guidance to educators on how most effectively and sensitively to mediate learner values and interests, given that educators working with learners have interests, aims, and values of their own. I suggest a solution based on pragmatic epistemological and learning theories.  相似文献   

School Turnaround Principals: What Does Initial Research Literature Suggest They Are Doing to Be Successful?     

Coby V. Meyers  Dallas Hambrick Hitt 《Journal of Education for Students Placed at Risk》2017,22(1):38-56

As the research literature on principals leading school turnaround grows, determining whether or not real differences between good, even effective, principals and turnaround principals becomes increasingly important. Recent federal government policy and investment established turnaround models that emphasize the role of the school principal, suggesting that turnaround principals do need to be different than other principals in some meaningful ways. But any difference in skill or characteristic remains undefined. For this article, we conducted a systematic review of empirical research literature to identify studies of principals who led successful school turnaround initiatives. We reviewed 18 empirical studies to categorize the education leadership areas in which turnaround principals must excel. We also present the limited evidence regarding attitudes, traits, or perspectives principals leading turnaround should likely possess. Finally, we consider implications of our findings for research and practice.  相似文献   

Education,Measurement and the Professions: Reclaiming a space for democratic professionality in education     

Gert Biesta 《Educational Philosophy and Theory》2017,49(4):315-330

Abstract

In this article, I explore the impact of the contemporary culture of measurement on education as a professional field. I focus particularly on the democratic dimensions of professionalism, which includes both the democratic qualities of professional action in education itself and the way in which education, as a profession, supports the wider democratic cause. I show how an initial authoritarian conception of professionalism was opened up in the 1960s and 1970s towards more democratic and more inclusive forms of professional action. I then show how, in the wake of the transformation of the welfare state and the rise of neo-liberal forms of governing, the democratic dimension of professionalism became distorted. I discuss three distortions: having to do with the position of clients, the nature of accountability and the status of professional knowledge. While at first sight, the developments in each of these areas can be seen as furthering the democratisation of the professions, I argue that in fact they have eroded the democratic dimension of the professions and show the contribution of the culture of measurement to this erosion process. In the final step of my argument, I suggest how a more democratic mode of professional action might be regained and how such a mode of professional action might contribute to wider processes of democratisation.  相似文献   

Disadvantaged older jobseekers and the concept of bounded agency     

Rebecca Meyers 《International Journal of Lifelong Education》2017,36(3):292-307

This article uses the concept of bounded agency to interpret the findings of a study that explored the training and job-seeking activities of a group of older adults. A qualitative, phenomenological approach was used to obtain personal and nuanced accounts of their experiences. A series of semi-structured interviews was conducted with eight adults aged 55 and older, who were low-skilled and unemployed. The findings identified that a range of interrelated barriers constrained their agency in those activities in two key areas. First, there was a disparity between their learning needs and preferences, and the delivery modes in their training programmes. Second, legacies from their personal histories contributed significantly to constraints in their current activities. The bounded agency concept explicated this range of barriers, as it incorporated institutional, societal and personal factors within the agency of individuals. A model of bounded agency was developed, that showed legacies from an individual’s personal history can lie at the base of their disadvantaged state, and that provisions in their training programmes can address those legacies. The article concludes by suggesting that this model could form the basis of further research with other jobseekers from disadvantaged backgrounds.  相似文献   

‘They didn’t tell me anything’: women’s literacies and resistance in rural Mexico     

Susan V. Meyers 《Gender and education》2011,23(7):857-871

Drawing from ethnographic case studies, this article considers issues of women’s access to education by exploring the literacy experiences of four women in rural Mexico. Ironically, as physical access to education in this area has increased, women’s literacy experiences have become more complex, rather than more libratory. Formal literacy, as it plays out for women in this community, is experienced as both an oppressive force as well as a tool for resistance to other forms of oppression. More importantly, the stories in this article highlight the socially dynamic nature of literacy as these four women utilise interpersonal relationships in order to subvert oppressive norms. These findings have implications both for theories of literacy as well as for educators who wish to work in more engaged ways with women and their children who emigrate from areas like rural Mexico.  相似文献   

Digital Storytelling in Museums: Observations and Best Practices     

Bruce Wyman  Scott Smith  Daniel Meyers  Michael Godfrey 《Curator: The Museum Journal》2011,54(4):461-468

Abstract The museum landscape has changed dramatically over the last 20 years. Technology has made possible new kinds of interactions, visitor expectations have broadened, competition for time and resources has become increasingly intense, and the buildings serve ever‐more‐complex roles. As a result, interactive designers, including those of us at Second Story, have evolved our skills and approaches to keep pace. This article summarizes many of our observations while sharing some of the best practices that we have evolved to create engaging interactive installations, websites, and experiences. Despite changes in technology and user behavior, a core focus on great storytelling should drive interactive design and serve as the critical element for museums communication and connecting with their visitors.  相似文献   

A Framework for Evaluating and Planning Assessments Intended to Improve Student Achievement     

Paul D. Nichols  Jason L. Meyers  Kelly S. Burling 《Educational Measurement》2009,28(3):14-23

Assessments labeled as formative have been offered as a means to improve student achievement. But labels can be a powerful way to miscommunicate. For an assessment use to be appropriately labeled "formative," both empirical evidence and reasoned arguments must be offered to support the claim that improvements in student achievement can be linked to the use of assessment information. Our goal in this article is to support the construction of such an argument by offering a framework within which to consider evidence-based claims that assessment information can be used to improve student achievement. We describe this framework and then illustrate its use with an example of one-on-one tutoring. Finally, we explore the framework's implications for understanding when the use of assessment information is likely to improve student achievement and for advising test developers on how to develop assessments that are intended to offer information that can be used to improve student achievement.  相似文献   

How General Can Bildung Be? Reflections on the Future of a Modern Educational Ideal     

Gert Biesta 《Journal of Philosophy of Education》2002,36(3):377-390

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Teaching,Teacher Education,and the Humanities: Reconsidering Education as a Geisteswissenschaft          下载免费PDF全文

Gert Biesta 《Educational theory》2015,65(6):665-679

In this essay Gert Biesta asks what the humanities can contribute to the field of teacher education. In addressing this question he turns to the idea of education as a Geisteswissenschaft as it was developed in the German‐speaking context in the first decades of the twentieth century. In this conception, education is configured as an interested academic discipline that engages with normative questions concerning the telos of education and does so with a focus on meaningful human action rather than human behavior. Viewing education this way highlights the role of value judgments in teaching. The values that are at stake in such judgments, Biesta argues, are not to be understood as moral values but as educational values, a view that raises some important questions about the specific nature of educational normativity. In a final step Biesta discusses how the idea of education as a Geisteswissenschaft makes a difference for the field of teacher education.  相似文献