53,295 research outputs found
Caracterização do perfil de pavimento
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Mecânica
A Little Book of Aesop's Fables
No full textHere is a little treasure from my visit with Matthew Eve at Marchpane in Cecil Court. Tom R. Rigby is new to me. His full-page black-and-white illustrations might remind one of Percy Billinghurst's in their format and approach. They seem to me right for this "little book," since they stress visually and in text a good focus for particular fables. The book is surprisingly generously illustrated. TMCM has the city food "hid under the seat" (29). Like so many before him, Rigby struggles with lion's faces. "The Little Books Series" is intended "for young and old." This little book is fragile, and many pages are loose. 93 pages. About 4" x 5¼". Oxford and Cambridge are the only places WorldCat lists as having the book besides us! I am following their guess of 1908. Our copy is inscribed in 1912.No Autho
Little rip in classical and quantum f(R) cosmology
No full textThe little rip is a cosmological abrupt event predicted by some phantom dark energy models that could describe the future evolution of our Universe. This event can be interpreted as a big rip singularity delayed indefinitely, although in those models bounded structures will be destroyed in a finite cosmic time in the future. In this work, we analyze the little rip cosmology from a classical and quantum point of view within the scheme of alternative metric f(R) theories of gravity. The quantum analysis is performed in the framework of f(R) quantum geometrodynamics by means of the modified Wheeler-DeWitt equation. In this context, we show that the DeWitt criterion can be satisfied. Similar to what happens in general relativity, this result points toward the avoidance of the little rip in f(R) quantum cosmology.Ministerio de Economía y Competitividad (España)European CommissionUniversidad Complutense de MadridBanco de SantanderIkerbasqueEusko JaurlaritzaDepto. de Física TeóricaFac. de Ciencias FísicasInstituto de Física de Partículas y del Cosmos (IPARCOS)TRUEpu
The use of real-world contextual framing in UK university entrance level mathematics examinations
No full textAlthough there has been considerable research into real-world contexts in elementary mathematics, little work has been done at a more advanced, post-16 level. This thesis explores the origin, function and effect of real-world contextual framing (RWCF)in GCEA/AS mathematics examinations. The study develops an evaluation framework (ARTA)based on the notions of accessibility, realism and task authenticity, derived from assessment theory, and considers ‘context’ in relation to theoretical ideas such as Realistic Mathematics Education, construct validity and construct-irrelevant variance.The function and effect of RWCF are investigated using the ARTA framework on samples of A/AS questions. Its effect is explored using sequence questions with the same solutions with and without real-world context, set to a sample of nearly 600 students, together with a questionnaire that surveys students’ attitudes to RWCF. Quantitative differences in the use of RWCF are established and traced to early project syllabuses such as SMP and MEI. The study finds that RWCF in general adds to the difficulty of questions, unless they can be solved by ‘thinking within the context’. The accessibility of questions with RWCF is a function of comprehensibility of language, and the explicitness of the match between context and mathematical model. The study distinguishes between natural and synthetic contexts, according to the extent to which the context matches reality, or reality is configured to match the mathematics. Natural contexts are more realistic; but synthetic contexts can serve the purpose of reifying abstract mathematical ideas. At best, RWCF in examination questions require solvers to engage in pseudo-modelling: they cannot test aspects of the modelling cycle such as discussing assumptions, refining, and critical reading of longer arguments. There is, moreover, a gender difference in students’ attitudes to RWCF, with boys in general expressing more favourable views about its use in pure mathematics questions.These findings have the following implications for A/AS assessment. Current examination questions are not able to satisfy current QCDA (Qualifications and Curriculum Authority, 2002) assessment objectives on mathematical modelling. Questions with RWCF need to be authentic, and require careful construction to ensure that language is precise and unambiguous. Longer questions, which present and invite comparison of more than one model, are desirable, in order that students appreciate the relationship between reality and mathematical models
As perspectivas dos pais de crianças à espera de operações eletivas nos Hospital Infantil Joana de Gusmão.
No full textTrabalho de Conclusão de Curso - Universidade Federal de Santa Catarina. Curso de Medicina. Departamento de Pediatria
Author Co-Citation Analysis (ACA): a powerful tool for representing implicit knowledge of scholar knowledge workers
No full textIn the last decade, knowledge has emerged as one of the most important and valuable organizational assets. Gradually this importance caused to emergence of new discipline entitled ―knowledge management‖. However one of the major challenges of knowledge management is conversion implicit or tacit knowledge to explicit knowledge. Thus Making knowledge visible so that it can be better accessed, discussed, valued or generally managed is a long-standing objective in knowledge management. Accordingly in this paper author co- citation analysis (ACA) will be proposed as an efficient technique of knowledge visualization in academia (Scholar knowledge workers)
R-ras1 and r-ras2 are essential for oligodendrocyte differentiation and survival for correct myelination in the central nervous system
No full textRapid and effective neural transmission of information requires correct axonal myelination. Modifications in myelination alter axonal capacity to transmit electric impulses and enable pathological conditions. In the CNS, oligodendrocytes (OLs) myelinate axons, a complex process involving various cellular interactions. However, we know little about the mechanisms that orchestrate correct myelination. Here, we demonstrate that OLs express R-Ras1 and R-Ras2. Using female and male mutant mice to delete these proteins, we found that activation of the PI3K/Akt and Erk1/2-MAPK pathways was weaker in mice lacking one or both of these GTPases, suggesting that both proteins coordinate the activity of these two pathways. Loss of R-Ras1 and/or R-Ras2 diminishes the number of OLs in major myelinated CNS tracts and increases the proportion of immature OLs. In R-Ras1-/-and R-Ras2-/--null mice, OLs show aberrant morphologies and fail to differentiate correctly into myelin-forming phenotypes. The smaller OL population and abnormal OL maturation induce severe hypomyelination, with shorter nodes of Ranvier in R-Ras1-/-and/or R-Ras2-/-mice. These defects explain the slower conduction velocity of myelinated axons that we observed in the absence of R-Ras1 and R-Ras2. Together, these results suggest that R-Ras1 and R-Ras2 are upstream elements that regulate the survival and differentiation of progenitors into OLs through the PI3K/Akt and Erk1/2-MAPK pathways for proper myelination.This work was supported by the Spanish Ministry of Economy and Competitiveness (BFU2015-64829-S and SAF2012-31279) to B.C. and (SAF2015-70368-R) to F.W
The safety and effectiveness of different methods of ear wax removal: a systematic review and economic evaluation
No full textEar wax (cerumen) is a natural secretion produced to protect the inner ear from dirt and other fragments by moving these particles towards the outer ear. If this process does not happen properly, wax may build up causing blockage in the ear canal and the possibility of impaction. People with a build up of ear wax may suffer from hearing loss, discomfort and, on occasions, infection. It may present problems in assessing hearing, blocking the view of the ear drum during medical examination and interfering with the fitting or function of hearing aids. Although it is thought to affect between 2% and 6% of the population in the England and Wales, some groups may be at a higher risk, such as those using hearing aids or with small ear canals and/or skin conditions. Recurrence is thought to be high among some of these groups. The consequences of the build up of ear wax in the ear canal are thought to be a common reason for consultation and cost in general practice with over 2 million consultations per year in the NHS.Methods of removal of ear wax include drops, flushing with water in general practice, and removal with suction or probes in specialist clinics. The relative safety and benefits of these different methods of removal remains uncertain. This research will systematically review published and unpublished evidence on the clinical and cost effectiveness of different methods for the removal of ear wax. Where appropriate, it will develop an economic model using data from this systematic review and other relevant sources to estimate the relative costs and benefits of different methods. In addition, the project will provide recommendations for future research to try to help answer any remaining areas of uncertainty
Rabia blanca, Rabia negra: Las políticas de la rabia femenina en Little Fires Everywhere (HULU, 2020)
No full textThis article is part of the R+D project ‘Mediatization of Women’s Rage: Intelligibility
Frameworks and Strategies of Politicizing Transformation’ (PID2020-113054GB-I00),
funded by the Spanish Ministry of Science & Innovation, and also part of the
Universitat Jaume I (Castellón, Spain) Research Programme projects UJI-B2019-13 and
UJI-B2022-10 on hate speeches.This article examines the TV show Little Fires Everywhere through the operationalisation of the concept of “anger competence” (Chemaly, 2018). The interest in the series lies in its representation of female rage. We contend that its narrative approach both legitimizes its expression and unravels the structures and practices of subject(ificat)ion through the axis of class and race. To prove it, we tackle the construction of the enraged subject, what the mediatization unfolds and its effects.Este artículo propone el análisis de la serie de televisión Little Fires Everywhere a partir de
la operacionalización del concepto de “competencia de la rabia” (Chemaly, 2018). Nuestro
interés en la serie radica en su representación de la ira femenina. Sostenemos que su
abordaje narrativo legitima su expresión y desvela las prácticas y estructuras de su(b)je(tiva)ción a través de los ejes de clase y raza. Para demostrarlo, abordamos la construcción del sujeto enfurecido, lo que la mediatización de la rabia revela y los efectos de esta.Ministerio de Ciencia e Innovación (MICIN) PID2020-113054GB-I00Universitat Jaume I UJI-B2019-13Universitat Jaume I UJI-B2022-1
Letter from C. L. Craven, Revue De La Pensée Française, New York, New York, to Professor R. I. Little, January 31, 1949
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