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排序方式: 共有207条查询结果,搜索用时 15 毫秒
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Sharon Stein Dallas Hunt Vanessa de Oliveira Andreotti 《Diaspora, Indigenous, and Minority Education》2017,11(2):69-79
In this article we address the current context of intensified racialized state securitization by tracing its roots to the naturalized colonial architectures of everyday modern life—which we present through the metaphor of “the house modernity built.” While contemporary crises are often perceived to derive from external threats to the house, we argue that in fact these crises are a product of the violent and unsustainable practices that are required in order to build and sustain the house itself. As the structural integrity of the house increasingly comes under strain, there are different possible responses, three of which we review here. We conclude by asking what kind of education might enable us to imagine and practice alternative formations of existence in a context where the house appears to be crumbling, and, indeed, has always been a fantasy. 相似文献
43.
Alandeom W. Oliveira 《Journal of Science Teacher Education》2010,21(7):747-765
This study explores how elementary teachers perceive and use engaging oral strategies (i.e., manners of speaking that encourage students to participate and become engaged in science discussions). It is reported
that the strategies employed as well as their frequency varied substantially depending upon on the teachers’ grade level and
perceptions. While a kindergarten teacher viewed such strategies negatively and employed only a few figurative directives,
fourth-grade teachers viewed them positively, frequently resorting to a variety of speech figures, parallel repetition and
engaging questions. It is argued that teachers’ engaging oral strategies are multifunctional, serving important social and
cognitive functions. 相似文献
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High-throughput study of alpha-synuclein expression in yeast using microfluidics for control of local cellular microenvironment 总被引:1,自引:0,他引:1
Microfluidics is an emerging technology which allows the miniaturization, integration, and automation of fluid handling processes. Microfluidic systems offer low sample consumption, significantly reduced processing time, and the prospect of massive parallelization. A microfluidic platform was developed for the control of the soluble cellular microenvironment of Saccharomyces cerevisiae cells, which enabled high-throughput monitoring of the controlled expression of alpha-synuclein (aSyn), a protein involved in Parkinson's disease. Y-shaped structures were fabricated using particle desorption mass spectrometry-based soft-lithography techniques to generate biomolecular gradients along a microchannel. Cell traps integrated along the microchannel allowed the positioning and monitoring of cells in precise locations, where different, well-controlled chemical environments were established. S. cerevisiae cells genetically engineered to encode the fusion protein aSyn-GFP (green fluorescent protein) under the control of GAL1, a galactose inducible promoter, were loaded in the microfluidic structure. A galactose concentration gradient was established in the channel and a time-dependent aSyn-GFP expression was obtained as a function of the positioning of cells along the galactose gradient. Our results demonstrate the applicability of this microfluidic platform to the spatiotemporal control of cellular microenvironment and open a range of possibilities for the study of cellular processes based on single-cell analysis. 相似文献
46.
João Pedro da Ponte Hélia Oliveira José Manuel Varandas 《Journal of Mathematics Teacher Education》2002,5(2):93-115
This paper describes the workundertaken in a course in communication andinformation technology in a pre-service programfor secondary school mathematics teachers. Thiscourse aimed to help pre-service teachersdevelop a positive attitude regarding ICT anduse it confidently. It focused on theexploration of educational software and of theInternet's potential as a means of research andproduction of web sites. We discuss how thepre-service mathematics teachers evaluate theirwork concerning their commitment, difficultiesthey found, learning they identified, andpersonal relationship. We also analyse theeffects of the course on the development oftheir professional knowledge and identity. 相似文献
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Tiago Oliveira Miguel Faria Manoj Abraham Thomas Aleš Popovič 《International Journal of Information Management》2014
Mobile banking (mBanking) enables customers to carry out their banking tasks via mobile devices. We advance the extant body of knowledge about mBanking adoption by proposing a model for understanding the importance and relationship between the user perception of mBanking, initial trust in mBanking services, and the fit between the technology and mBanking task characteristics. We synergistically combine the strengths of three IS theories – task technology fit (TTF) model, unified theory of acceptance and usage of technology (UTAUT), and initial trust model (ITM). The model was tested in a study conducted in Portugal, one of the European Union (EU) countries with the highest mobile phone adoption. Based on the sample of 194 individuals we applied partial least squares (PLS) to test the conceptual model propose. The path significance levels were estimated using the bootstrapping method (500 resamples). The study found that facilitating conditions and behavioral intentions directly influence mBanking adoption. Initial trust, performance expectancy, technology characteristics, and task technology fit have total effect on behavioral intention. The paper offers valuable insights to decision-makers involved in the implementation and deployment of mBanking services. For researchers, the paper highlights the usefulness of integrating TTF, UTAUT and ITM in the development of a decision support framework to study the adoption of new technologies. 相似文献
50.
Zanca GG Oliveira AB Saccol MF Ejnisman B Mattiello-Rosa SM 《Journal of sports sciences》2011,29(15):1603-1611
In this study, we evaluated the peak torque, functional torque ratios, and torque curve profile of the shoulder rotators in overhead athletes with impingement symptoms so as to examine possible alterations in response to sports training and shoulder pain. Twenty-one overhead athletes with impingement symptoms were compared with 25 overhead athletes and 21 non-athletes, none of whom were symptomatic for impingement. The participants performed five maximal isokinetic concentric and eccentric contractions of medial and lateral shoulder rotations at 1.57 rad · s(-1) and 3.14 rad · s(-1). Isokinetic peak torque was used to calculate the eccentric lateral rotation-to-concentric medial rotation and the eccentric medial rotation-to-concentric lateral rotation ratios. An analysis of the torque curve profiles was also carried out. The eccentric lateral rotation-to-concentric medial rotation torque ratio of asymptomatic athletes was lower than that of non-athletes at both test velocities. The concentric medial rotation isokinetic peak torque of the asymptomatic athletes, at 3.14 rad · s(-1), was greater than that of the non-athletes, and the peak appeared to occur earlier in the movement for athletes than non-athletes. These findings suggest that there may be adaptations to shoulder function in response to throwing practice. The eccentric medial rotation-to-concentric lateral rotation torque ratio was altered neither by the practice of university-level overhead sports nor impingement symptoms. 相似文献