Introduction to the Special Forum on Critical Making as Research Program     

Matt Ratto  Sara Ann Wylie  Kirk Jalbert 《The Information Society》2014,30(2):85-95

This special issue spotlights the growing diversity of critical making practices in a range of disciplinary contexts both inside and outside of the academy, and begins to develop perspectives that will foster the emergence of critical making as a coherent field. On one hand, we see great value in incorporating material practices into existing information systems (IS) and science and technology studies (STS) research programs. In particular, forms of material engagement can help overcome the ineffectual linguistic bias of traditional critiques of technoscience. On the other hand, we believe that current material practices can benefit from the conceptualization of knowledge and social organization that are foundational to IS and STS research. In this introduction to the special issue we call attention to the mechanisms by which such practices may combine representational and material work to foster and support the development of new knowledge-making communities and institutions. We believe such work can serve as a framework for others engaged in critical making practices to better contextualize and expand the relevance of their work. We intend this special issue to serve as a “stake in the ground” for research on new forms of material-conceptual critique and their incorporation in the repertoire of critical technoscience scholarship.  相似文献   

Examination of the role of transient receptor potential vanilloid type 4 in endothelial responses to shear forces     

Sara Baratchi  Francisco J. Tovar-Lopez  Khashayar Khoshmanesh  Megan S. Grace  William Darby  Juhura Almazi  Arnan Mitchell  Peter McIntyre 《Biomicrofluidics》2014,8(4)

Shear stress is the major mechanical force applied on vascular endothelial cells by blood flow, and is a crucial factor in normal vascular physiology and in the development of some vascular pathologies. The exact mechanisms of cellular mechano-transduction in mammalian cells and tissues have not yet been elucidated, but it is known that mechanically sensitive receptors and ion channels play a crucial role. This paper describes the use of a novel and efficient microfluidic device to study mechanically-sensitive receptors and ion channels in vitro, which has three independent channels from which recordings can be made and has a small surface area such that fewer cells are required than for conventional flow chambers. The contoured channels of the device enabled examination of a range of shear stresses in one field of view, which is not possible with parallel plate flow chambers and other previously used devices, where one level of flow-induced shear stress is produced per fixed flow-rate. We exposed bovine aortic endothelial cells to different levels of shear stress, and measured the resulting change in intracellular calcium levels ([Ca²⁺]_i) using the fluorescent calcium sensitive dye Fluo-4AM. Shear stress caused an elevation of [Ca²⁺]_i that was proportional to the level of shear experienced. The response was temperature dependant such that at lower temperatures more shear stress was required to elicit a given level of calcium signal and the magnitude of influx was reduced. We demonstrated that shear stress-induced elevations in [Ca²⁺]_i are largely due to calcium influx through the transient receptor potential vanilloid type 4 ion channel.  相似文献   

Foreword     

Annette R. Hofmann  Gerald Gems  Maureen Smith 《国际体育史杂志》2014,31(15)

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Introduction     

Sara Selwood 《Cultural Trends》1999,9(36)

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Early Childhood Teacher Education: A Global Perspective     

Sara Lundsteen 《Journal of Early Childhood Teacher Education》2013,34(3):5-7

A couple of years ago I attended a presentation at a professional meeting that made a major impact upon my life. The session, “Ways of Achieving Excellence in a Global Community,” included presentations by early childhood educators from Australia, Hungary and Finland. At the conclusion of this sharing of ideas regarding what other countries are doing to improve the lives of children, I overheard an American colleague whisper to her neighbor in amazement, “My God! We're a Third World country when it comes to child care.” Without contrasts brought out by this session, however, this educator might have never been open to the world of ideas for improving children's lives.  相似文献   

Introduction     

Sara Selwood 《Cultural Trends》1999,9(34)

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Sport and Cultures     

Annette R. Hofmann 《Sportwissenschaft》2005,35(2):230-232

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Examining preservice teacher content and pedagogical content knowledge needed to teach reading in elementary school          下载免费PDF全文

Sarah K. Clark  Sara R. Helfrich  Lance Hatch 《Journal of Research in Reading》2017,40(3):219-232

Recently, increased attention has been placed on the importance of having knowledgeable and skilled teachers in order to influence reading achievement. Yet many international reports suggest that large numbers of children are not learning to read. How can we better prepare teachers with the necessary knowledge to teach reading? The current study examined the reading instructional knowledge of elementary education preservice teachers (N = 87) from two teacher education programmes. Programme A required five reading methods courses and Programme B required two methods courses. Findings indicate that the preservice teachers presented fairly robust levels of knowledge in the areas of phonological awareness, phonics, comprehension and vocabulary. However, we found statistically significant differences in knowledge based on the programme attended and the number of courses completed. Suggestions for improving reading teacher education are provided.  相似文献   

Considerate,convivial and capacious? Finding a language to capture ethos in ‘creative’ schools     

Sara Bragg  Helen Manchester 《Discourse: Studies in the Cultural Politics of Education》2017,38(6):864-879

Concepts of school ‘ethos’ or ‘culture’ have been widely debated in education since the 1980s. This is partly as a consequence of marketisation, partly because ethos has been identified as a low-cost route to school improvement. Corporate, authoritarian, and most recently ‘military’ models of ethos have been widely promulgated in the UK. Another significant strand of educational thinking, however, has emphasised ethos for and as learning: how schools might prefigure alternative, more socially just, worlds. This article argues that accounting for such divergent notions of ethos demands greater attention to the intellectual resources mobilised in interpreting educational processes. We discuss schools that used their work with the English creative learning programme, Creative Partnerships, to develop what we describe as ‘considerate, convivial and capacious’ school ethos. We aim thereby to value their achievements, provide tools to contest dominant discourses around ethos, and advocate more critical, reflexive approaches to researching school cultures.  相似文献   

Understanding,embracing and reflecting upon the messiness of doctoral fieldwork     

Arif Naveed  Nozomi Sakata  Anthoula Kefallinou  Sara Young  Kusha Anand 《Compare》2017,47(5):773-792

This Forum issue discusses the centrality of the fieldwork in doctoral research. The inevitability of researchers’ influence and of their values apparent during and after their fieldwork calls for a high degree of reflexivity. Since the standard methodology textbooks do not sufficiently guide on addressing such challenges, doctoral researchers go through stressful phases, at times revising various decisions they made before starting fieldwork. By drawing upon four case studies from varied contexts, this forum highlights some of these challenges including: going beyond signing the consent form and building rapport to elicit student voices; the ethical implications of White privilege of researchers turning consent into an obligatory contract with participants; unanticipated delays in the fieldwork opening up new possibilities; and tensions resulting from negotiating between insider and outsider identities while researching in two hostile contexts.  相似文献