1,721,297 research outputs found
Upper limb movements and cerebral plasticity in post-stroke rehabilitation.
No full textAbstract
Rehabilitative interventions for the plegic/paretic upper limb of stroke survivors are more effective if they are early, intensive, and provide multisensory stimulation. Various rehabilitative approaches have been proposed to date, but little has been published on clinical efficacy. The mechanism underlying recovery of neurological injury after stroke is still incompletely understood, but more than one process is probably involved and cerebral plasticity undoubtedly plays a key role. The goal of this review was to identify which movements and type of therapeutic arm exercises may influence cerebral plasticity in plegic/paretic stroke survivors. Evidence suggests that plasticity is stimulated more by the arm's movement trajectory than by its final position in space. Rehabilitation should be based on simple, repetitive, unidirectional or, better still, complex and multidirectional movements in all spatial planes, such as circular or spiral movements. It should also incorporate a feedback system, since this seems to bring about earlier and better motor and functional outcomes
Na direção do desejo feminino: : vozes sociais e embates discursivos nas escritas de Adelaide Carraro e Cassandra
Full text linkAdelaide Carraro e Cassandra Rios, as escritoras malditas do século XX (PEIXOTO; CARRARO; RIOS, 1969), cujas obras foram produzidas durante o regime ditatorial brasileiro (1964-1985), firmaram-se como um fenômeno literário nesse contexto (REIMÃO, 2011; AMARAL, 2017), sendo responsáveis, ainda que perseguidas e proibidas, pela escrita de inúmeros romances ancorados na expressão da liberdade das mulheres. Diante disso, objetivamos analisar, com base nas postulações do Círculo de Bakhtin (2011a, 2011b, 2011c, 2014, 2015, 2017a, 2017b, 2019), as obras Fogo (Só Para Homens), de Carraro, e A Paranóica, de Rios, de modo a identificar as marcas discursivas da manifestação do desejo de duas personagens e a averiguar como a enunciação delas se relaciona com o contexto representado da sociedade da época em que estão inseridas nos romances. Considerando a conjuntura da produção dos enunciados analisados, a partir do pensamento de Bakhtin (2015), notam-se embates discursivos nos quais as personagens assumem “vozes sociais” atuantes como “forças centrífugas”,Adelaide Carraro e Cassandra Rios, as escritoras malditas do século XX (PEIXOTO; CARRARO; RIOS, 1969), cujas obras foram produzidas durante o regime ditatorial brasileiro (1964-1985), firmaram-se como um fenômeno literário nesse contexto (REIMÃO, 2011; AMARAL, 2017), sendo responsáveis, ainda que perseguidas e proibidas, pela escrita de inúmeros romances ancorados na expressão da liberdade das mulheres. Diante disso, objetivamos analisar, com base nas postulações do Círculo de Bakhtin (2011a, 2011b, 2011c, 2014, 2015, 2017a, 2017b, 2019), as obras Fogo (Só Para Homens), de Carraro, e A Paranóica, de Rios, de modo a identificar as marcas discursivas da manifestação do desejo de duas personagens e a averiguar como a enunciação delas se relaciona com o contexto representado da sociedade da época em que estão inseridas nos romances. Considerando a conjuntura da produção dos enunciados analisados, a partir do pensamento de Bakhtin (2015), notam-se embates discursivos nos quais as personagens assumem “vozes sociais” atuantes como “forças centrífugas”
Eligible strategies of drought response to improve drought resistance in woody crops: a mini-review
Full text linkDrought is the main abiotic stress that negatively affects the crop yield. Due to the rapid climate change, actual plant defence mechanisms may be less effective against increased drought stress and other related or co-occurring abiotic stresses such as salt and high temperature. Thus, genetic engineering approaches may be an important tool for improving drought tolerance in crops. This mini-review focuses on the responses to drought stress of the woody crop species Olea europaea and Citrus sp., selecting in particular five main strategies adopted by plants in response to drought stress: aquaporin (AQPs) expression, antioxidant activity, ABA signalling, and trehalose and proline accumulation. Transgenic studies on both the herbaceous Arabidopsis and woody Populus plant models showed an improvement in drought resistance with increasing expression of these drought-inducible genes. Outcomes from the present study suggest the overexpression of the gene families associated with AQPs and ABA biosynthesis, mainly involved in regulating water transport and in preventing water loss, respectively, as candidate targets for improving drought resistance; antioxidants-, trehalose- and proline-related genes remain valid candidates for resistance to a wider spectrum of abiotic stressors, including drought. However, the contribution of an increased stiffness of the modulus elasticity of leaf parenchyma cell walls to the rapid recovery of leaf water potential, delaying by this way the stress onset, is not a secondary aspect of the transgenic optimization, in particular for Olea cultivars
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
TUNED MASS DAMPER DESIGN FOR VIBRATION SUPPRESSION OF STACKER CRANES
No full textDuring a normal work cycle, stacker cranes can exhibit large vibration amplitude due to the impulsiveness of the loads to which they are subjected. In order to control and reduce these vibrations, a simple lumped parameter (LP) model of a stacker cranes has been developed. The parameters of the LP have been estimated by means of a more detailed finite element model. The LP model has been used in order to evaluate the effectiveness of a tuned mass damper (TMD) for vibration suppression. The TMD has been tuned by means of the model results. Eventually, a new prototype of a stacker crane has been designed including the TMA
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Educazione Fisica e Scienze Motorie: quale epistemologia?
No full textRiflettere su una epistemologia per le Scienze Motorie, e più specificamente per l’Educazione Fisica nel contesto delle Scienze Motorie, significa interrogarsi su una posizione, o meglio su una collocazione, e sulle direzioni che da questa possono essere intraprese per studiare il movimento umano e le sue implicazioni educative
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