231 research outputs found

    Profesorado : revista de curriculum y formación del profesorado

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    Monográfico con el título: “Políticas de evaluación y accountability en la educación"Título, resumen y palabras clave también en españolResumen basado en el de la publicaciónLos servicios públicos pueden desarrollar dos prácticas contrapuestas de rendición de cuentas: el modelo convencional hace hincapié en que ser responsable es "tener en cuenta", que se espera responder a preguntas sobre el rendimiento y que las respuestas son evaluadas por los superiores medidos en función de algún estándar o expectativa, seguido de la alabanza o culpa correspondiente y se aplica la sanción. El modo de rendición de cuentas expresa la jerarquía de autoridad. Un proceso muy diferente alienta el diálogo sobre la rendición de cuentas entre los profesionales y los públicos, que "dan cuenta" ofreciendo un relato que interpreta y explica lo que ha sucedido y por qué ha tenido lugar. Se observan las prácticas contrapuestas en el desarrollo de la gobernanza escolar en Inglaterra y aboga por la importancia del diálogo para mejorar el aprendizaje y la capacidad de respuesta democrática.ES

    Discutiendo la reforma de la gobernanza escolar en Inglaterra: Contrastando los modos de gobernanza y rendición de cuentas

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    Public services can develop two contrasting practices of accountability: the conventional model emphasises that to be accountable is to be ‘held to account’, to be expected to answer questions about performance and that the answers are then evaluated by superiors measured against some standard or expectation following which praise or blame is meted out and sanctions applied. This mode of accountability is expresses hierarchy of authority. A very different process encourages dialogues of accountability between practitioners and publics, who ‘give an account’ offering a story that interprets and explains what has happened and why it has taken place. This paper observes these contrasting practices in the development of school governance in England and argues for the importance of dialogue to enhance learning and democratic responsiveness.Los servicios públicos pueden desarrollar dos prácticas contrapuestas de rendición de cuentas: el modelo convencional hace hincapié en que ser responsable es "tener en cuenta", que se espera responder a preguntas sobre el rendimiento y que las respuestas son evaluadas por los superiores medidos en función de algún estándar o expectativa, seguido de la alabanza o culpa correspondiente y se aplica la sanción. Este modo de rendición de cuentas expresa la jerarquía de autoridad. Un proceso muy diferente alienta el diálogo sobre la rendición de cuentas entre los profesionales y los públicos, que "dan cuenta" ofreciendo un relato que interpreta y explica lo que ha sucedido y por qué ha tenido lugar. Este artículo observa estas prácticas contrapuestas en el desarrollo de la gobernanza escolar en Inglaterra y aboga por la importancia del diálogo para mejorar el aprendizaje y la capacidad de respuesta democrática.Universidad de Granada. Departamento de Didáctica y Organización Escolar. Grupo FORCE (HUM-386

    Disruption and Disposition in Lifelong Learning

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    UK government policies for social inclusion through engaging with the learning society aim at repositioning people as capable participants in their social worlds. These policies at first sight appear to be aimed at a sophisticated restructuring of social contexts as well as at an enhancing of individual learning. However there is a degree of conceptual confusion within these policies. In this paper we explore some of the tensions evident in a study of a family learning centre in an English city. In the exploration we examine the extent to which the tools offered by sociocultural and activity theory (SAT) can assist in resolving that conceptual confusion and how SAT itself might need to develop in order to analyse complex and sustained forms of intervention.</p

    Schools and civil society : corporate or community governance

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    School improvement depends upon mediating the cultural conditions of learning as young people journey between their parochial worlds and the public world of cosmopolitan society. Governing bodies have a crucial role in including or diminishing the representation of different cultural traditions and in enabling or frustrating the expression of voice and deliberation of differences whose resolution is central to the mediation of and responsiveness to learning needs. A recent study of governing bodies in England and Wales argues that the trend to corporatising school governance will diminish the capacity of schools to learn how they can understand cultural traditions and accommodate them in their curricula and teaching strategies. A democratic, stakeholder model remains crucial to the effective practice of governing schools. By deliberating and reconciling social and cultural differences, governance constitutes the practices for mediating particular and cosmopolitan worlds and thus the conditions for engaging young people in their learning, as well as in the preparation for citizenship in civil society

    Neurogenic mechanisms in bladder and bowel ageing

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    The prevalence of both urinary and faecal incontinence, and also chronic constipation, increases with ageing and these conditions have a major impact on the quality of life of the elderly. Management of bladder and bowel dysfunction in the elderly is currently far from ideal and also carries a significant financial burden. Understanding how these changes occur is thus a major priority in biogerontology. The functions of the bladder and terminal bowel are regulated by complex neuronal networks. In particular neurons of the spinal cord and peripheral ganglia play a key role in regulating micturition and defaecation reflexes as well as promoting continence. In this review we discuss the evidence for ageing-induced neuronal dysfunction that might predispose to neurogenic forms of incontinence in the elderly

    Indoor application of attractive toxic sugar bait (ATSB) in combination with mosquito nets for control of pyrethroid-resistant mosquitoes.

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    BACKGROUND: Attractive toxic sugar bait (ATSB) sprayed onto vegetation has been successful in controlling Anopheles mosquitoes outdoors. Indoor application of ATSB has yet to be explored. The purpose of this study was to determine whether ATSB stations positioned indoors have the potential to kill host-seeking mosquitoes and constitute a new approach to control of mosquito-borne diseases. METHODS: Insecticides were mixed with dyed sugar solution and tested as toxic baits against Anopheles arabiensis, An. Gambiae s.s. and Culex quinquefasciatus in feeding bioassay tests to identify suitable attractant-insecticide combinations. The most promising ATSB candidates were then trialed in experimental huts in Moshi, Tanzania. ATSB stations were hung in huts next to untreated mosquito nets occupied by human volunteers. The proportions of mosquitoes killed in huts with ATSB treatments relative to huts with non-insecticide control treatments huts were recorded, noting evidence of dye in mosquito abdomens. RESULTS: In feeding bioassays, chlorfenapyr 0.5% v/v, boric acid 2% w/v, and tolfenpyrad 1% v/v, mixed in a guava juice-based bait, each killed more than 90% of pyrethroid-susceptible An. Gambiae s.s. and pyrethroid-resistant An. arabiensis and Cx. quinquefasciatus. In the hut trial, mortality rates of the three ATSB treatments ranged from 41-48% against An. arabiensis and 36-43% against Cx. quinquefasciatus and all were significantly greater than the control mortalities: 18% for An. arabiensis, 7% for Cx. quinquefasciatus (p<0.05). Mortality rates with ATSB were comparable to those with long lasting insecticidal nets previously tested against the same species in this area. CONCLUSIONS: Indoor ATSB shows promise as a supplement to mosquito nets for controlling mosquitoes. Indoor ATSB constitute a novel application method for insecticide classes that act as stomach poisons and have not hitherto been exploited for mosquito control. Combined with LLIN, indoor use of ATSB has the potential to serve as a strategy for managing insecticide resistance

    Anatomical Alterations of the Visual Motion Processing Network in Migraine with and without Aura

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    BACKGROUND: Patients suffering from migraine with aura (MWA) and migraine without aura (MWoA) show abnormalities in visual motion perception during and between attacks. Whether this represents the consequences of structural changes in motion-processing networks in migraineurs is unknown. Moreover, the diagnosis of migraine relies on patient's history, and finding differences in the brain of migraineurs might help to contribute to basic research aimed at better understanding the pathophysiology of migraine. METHODS AND FINDINGS: To investigate a common potential anatomical basis for these disturbances, we used high-resolution cortical thickness measurement and diffusion tensor imaging (DTI) to examine the motion-processing network in 24 migraine patients (12 with MWA and 12 MWoA) and 15 age-matched healthy controls (HCs). We found increased cortical thickness of motion-processing visual areas MT+ and V3A in migraineurs compared to HCs. Cortical thickness increases were accompanied by abnormalities of the subjacent white matter. In addition, DTI revealed that migraineurs have alterations in superior colliculus and the lateral geniculate nucleus, which are also involved in visual processing. CONCLUSIONS: A structural abnormality in the network of motion-processing areas could account for, or be the result of, the cortical hyperexcitability observed in migraineurs. The finding in patients with both MWA and MWoA of thickness abnormalities in area V3A, previously described as a source in spreading changes involved in visual aura, raises the question as to whether a “silent” cortical spreading depression develops as well in MWoA. In addition, these experimental data may provide clinicians and researchers with a noninvasively acquirable migraine biomarker

    Immune mechanisms in malaria: new insights in vaccine development.

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    Early data emerging from the first phase 3 trial of a malaria vaccine are raising hopes that a licensed vaccine will soon be available for use in endemic countries, but given the relatively low efficacy of the vaccine, this needs to be seen as a major step forward on the road to a malaria vaccine rather than as arrival at the final destination. The focus for vaccine developers now moves to the next generation of malaria vaccines, but it is not yet clear what characteristics these new vaccines should have or how they can be evaluated. Here we briefly review the epidemiological and immunological requirements for malaria vaccines and the recent history of malaria vaccine development and then put forward a manifesto for future research in this area. We argue that rational design of more effective malaria vaccines will be accelerated by a better understanding of the immune effector mechanisms involved in parasite regulation, control and elimination

    «La relation de limitation et d’exception dans le français d’aujourd’hui : excepté, sauf et hormis comme pivots d’une relation algébrique »

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    L’analyse des emplois prépositionnels et des emplois conjonctifs d’ “excepté”, de “sauf” et d’ “hormis” permet d’envisager les trois prépositions/conjonctions comme le pivot d’un binôme, comme la plaque tournante d’une structure bipolaire. Placées au milieu du binôme, ces prépositions sont forcées par leur sémantisme originaire dûment métaphorisé de jouer le rôle de marqueurs d’inconséquence systématique entre l’élément se trouvant à leur gauche et celui qui se trouve à leur droite. L’opposition qui surgit entre les deux éléments n’est donc pas une incompatibilité naturelle, intrinsèque, mais extrinsèque, induite. Dans la plupart des cas (emplois limitatifs), cette opposition prend la forme d’un rapport entre une « classe » et le « membre (soustrait) de la classe », ou bien entre un « tout » et une « partie » ; dans d’autres (emplois exceptifs), cette opposition se manifeste au contraire comme une attaque de front portée par un « tout » à un autre « tout ». De plus, l’inconséquence induite mise en place par la préposition/conjonction paraît, en principe, tout à fait insurmontable. Dans l’assertion « les écureuils vivent partout, sauf en Australie » (que l’on peut expliciter par « Les écureuils vivent partout, sauf [qu’ils ne vivent pas] en Australie »), la préposition semble en effet capable d’impliquer le prédicat principal avec signe inverti, et de bâtir sur une telle implication une sorte de sous énoncé qui, à la rigueur, est totalement inconséquent avec celui qui le précède (si « les écureuils ne vivent pas en Australie », le fait qu’ils « vivent partout » est faux). Néanmoins, l’analyse montre qu’alors que certaines de ces oppositions peuvent enfin être dépassées, d’autres ne le peuvent pas. C’est, respectivement, le cas des relations limitatives et des relations exceptives. La relation limitative, impliquant le rapport « tout » - « partie », permet de résoudre le conflit dans les termes d’une somme algébrique entre deux sous énoncés pourvus de différent poids informatif et de signe contraire. Les valeurs numériques des termes de la somme étant déséquilibrées, le résultat est toujours autre que zéro. La relation exceptive, au contraire, qui n’implique pas le rapport « tout » - « partie », n’est pas capable de résoudre le conflit entre deux sous énoncés pourvus du même poids informatif et en même temps de signe contraire : les valeurs numériques des termes de la somme étant symétriques et égales, le résultat sera toujours équivalent à zéro
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