1,147 research outputs found
Using Disciplinary Literacies to Enhance Adolescents\u27 Engineering Design Activity
This comparative case study describes the literacy practices of two groups of adolescents as they sought to solve authentic problems through engineering design processes. Three types of data were collected as the groups addressed these problems: video- and audio-recordings of their conversations; adolescent-generated products; and pre- and post-challenge interviews. The authors used existing coding schemes of engineering design activity to identify when the adolescents enacted different stages of engineering design, as well as a modified form of constant comparative analysis to identify the literacy practices that corresponded with each stage. The analysis indicates that applications of literacy practices at each stage of the engineering design process enhanced the adolescents\u27 overall design activity, whereas the absence of literacy practices often impeded the viability of their final designs. The authors suggest implications for high school engineering and science teachers who seek to enhance their students\u27 design activity through literacy instruction
Exercises for improving quick perception grades I, II, III.
Thesis (Ed.M.)--Boston University
N.B.: Page 242 is misnumbered. No content is missing from thesis
The Impact of Social Support and the Number of Searchers on Perceptions of Consent Searches
Consent searches require voluntariness of consent for validity under the 4th Amendment. Social situational factors may affect perceptions of voluntariness, but their importance is minimized in court decisions about searches. Participants (N = 328) rated perceptions of a consent request in a consent search situation in which social power dynamics (i.e., number of searchers and the amount of social support) were manipulated. Social support affected perceptions of pressure to say yes to the search. Significant differences in perceptions between the third-person and first-person perspective were observed, indicating that judges may overestimate consent voluntariness. There was also a significant three-way interaction between gender of the participant, number of searchers, amount of social support and how they influence first-person perceptions of coerciveness of a search request
The utility of MAS5 expression summary and detection call algorithms
<p>Abstract</p> <p>Background</p> <p>Used alone, the MAS5.0 algorithm for generating expression summaries has been criticized for high False Positive rates resulting from exaggerated variance at low intensities.</p> <p>Results</p> <p>Here we show, with replicated cell line data, that, when used alongside detection calls, MAS5 can be both selective and sensitive. A set of differentially expressed transcripts were identified that were found to be changing by MAS5, but unchanging by RMA and GCRMA. Subsequent analysis by real time PCR confirmed these changes. In addition, with the Latin square datasets often used to assess expression summary algorithms, filtered MAS5.0 was found to have performance approaching that of its peers.</p> <p>Conclusion</p> <p>When used alongside detection calls, MAS5 is a sensitive and selective algorithm for identifying differentially expressed genes.</p
Anti-epileptic drugs and bone loss: phenytoin reduces pro-collagen I and alters the electrophoretic mobility of osteonectin in cultured bone cells.
Phenytoin is an antiepileptic drug used in the management of partial and tonic-clonic seizures. In previous studies we have shown that valproate, another antiepileptic drug, reduced the amount of two key bone proteins, pro-collagen I and osteonectin (SPARC, BM-40), in both skin fibroblasts and cultured osteoblast-like cells. Here we show that phenytoin also reduces pro-collagen I production in osteoblast-like cells, but does not appear to cause a decrease in osteonectin message or protein production. Instead, a 24h exposure to a clinically relevant concentration of phenytoin resulted in a dose-dependent change in electrophoretic mobility of osteonectin, which was suggestive of a change in post-translational modification status. The perturbation of these important bone proteins could be one of the mechanisms to explain the bone loss that has been reported following long-term treatment with phenytoin
Policy for sustainable entrepreneurship: a crowdsourced framework
Sustainable entrepreneurship—entrepreneurship with social and ecological gains as well as economic ones—has the potential to play a significant role in addressing societal and environmental challenges. However, sustainability and entrepreneurship have hitherto been addressed through separate policy regimes, and it is not clear how policymakers can encourage sustainable entrepreneurship specifically. The authors develop a policy framework for sustainable entrepreneurship, using an open innovation approach with policymakers, business executives, academics, entrepreneurs and other relevant actors, including an online crowdsourcing event with 150 participants. The framework incorporates five policy domains: creating awareness and skills; building networks; funding and investing; measuring impact and performance; and innovating government. The article proposes a modified version of the multi-level perspective (MLP) on how socio-technical transitions occur, since the findings suggest that policy can catalyze the facilitation and aggregation of innovations coming from the niche level, thereby evolving the socio-technical regime, in addition to the role of policy described in earlier work in stabilizing the socio-technical regime. Contributions to entrepreneurship policy literature include the policy domain of measuring impact and performance, as appropriate success measures are non-trivial in a triple bottom line environment, and the potential for open policy innovation in entrepreneurship policy. Contributions to sustainability policy literature include the requirements for support mechanisms and capacity building to empower individuals to contribute as innovators and entrepreneurs and not just consumers. The sustainable entrepreneurship framework can be applied by policymakers to develop context-specific policies: this is illustrated with a worked example of EU policy recommendations. The paper also outlines a method for crowdsourcing policy innovations
Policy for sustainable entrepreneurship: a crowdsourced framework
Sustainable entrepreneurship—entrepreneurship with social and ecological gains as well as economic ones—has the potential to play a significant role in addressing societal and environmental challenges. However, sustainability and entrepreneurship have hitherto been addressed through separate policy regimes, and it is not clear how policymakers can encourage sustainable entrepreneurship specifically. The authors develop a policy framework for sustainable entrepreneurship, using an open innovation approach with policymakers, business executives, academics, entrepreneurs and other relevant actors, including an online crowdsourcing event with 150 participants. The framework incorporates five policy domains: creating awareness and skills; building networks; funding and investing; measuring impact and performance; and innovating government. The article proposes a modified version of the multi-level perspective (MLP) on how socio-technical transitions occur, since the findings suggest that policy can catalyze the facilitation and aggregation of innovations coming from the niche level, thereby evolving the socio-technical regime, in addition to the role of policy described in earlier work in stabilizing the socio-technical regime. Contributions to entrepreneurship policy literature include the policy domain of measuring impact and performance, as appropriate success measures are non-trivial in a triple bottom line environment, and the potential for open policy innovation in entrepreneurship policy. Contributions to sustainability policy literature include the requirements for support mechanisms and capacity building to empower individuals to contribute as innovators and entrepreneurs and not just consumers. The sustainable entrepreneurship framework can be applied by policymakers to develop context-specific policies: this is illustrated with a worked example of EU policy recommendations. The paper also outlines a method for crowdsourcing policy innovations
Nurses\u27 Alumnae Association Bulletin, April 1959
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Lamin A/C dysregulation contributes to cardiac pathology in a mouse model of severe spinal muscular atrophy
Cardiac pathology is emerging as a prominent systemic feature of spinal muscular atrophy (SMA), but little is known about the underlying molecular pathways. Using quantitative proteomics analysis, we demonstrate widespread molecular defects in heart tissue from the Taiwanese mouse model of severe SMA. We identify increased levels of lamin A/C as a robust molecular phenotype in the heart of SMA mice and show that lamin A/C dysregulation is also apparent in SMA patient fibroblast cells and other tissues from SMA mice. Lamin A/C expression was regulated in vitro by knockdown of the E1 ubiquitination factor ubiquitin-like modifier activating enzyme 1, a key downstream mediator of SMN-dependent disease pathways, converging on β-catenin signaling. Increased levels of lamin A are known to increase the rigidity of nuclei, inevitably disrupting contractile activity in cardiomyocytes. The increased lamin A/C levels in the hearts of SMA mice therefore provide a likely mechanism explaining morphological and functional cardiac defects, leading to blood pooling. Therapeutic strategies directed at lamin A/C may therefore offer a new approach to target cardiac pathology in SMA
Nurses\u27 Alumnae Association Bulletin, June 1965
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