629 research outputs found

    on Rana Fuscigula and R. Angolensis.

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    Zoology of Egypt; The Fishes of the Nile

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    Book containing plates of fishes of the Nile.https://knowledge.e.southern.edu/kweeks_coll/1037/thumbnail.jp

    Action in cognition: the case of language

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    Empirical research has shown that the processing of words and sentences is accompanied by activation of the brain's motor system in language users. The degree of precision observed in this activation seems to be contingent upon (1) the meaning of a linguistic construction and (2) the depth with which readers process that construction. In addition, neurological evidence shows a correspondence between a disruption in the neural correlates of overt action and the disruption of semantic processing of language about action. These converging lines of evidence can be taken to support the hypotheses that motor processes (1) are recruited to understand language that focuses on actions and (2) contribute a unique element to conceptual representation. This article explores the role of this motor recruitment in language comprehension. It concludes that extant findings are consistent with the theorized existence of multimodal, embodied representations of the referents of words and the meaning carried by language. Further, an integrative conceptualization of “fault tolerant comprehension” is proposed

    The impact of fire on habitat use by the short-snouted elephant shrew ('Elephantulus brachyrhynchus') in North West Province, South Africa

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    Several studies have investigated the response of small mammal populations to fire, but few have investigated behavioural responses to habitat modification. In this study we investigated the impact of fire on home range, habitat use and activity patterns of the short-snouted elephant shrew (Elephantulus brachyrhynchus) by radio-tracking individuals before and after a fire event. All animals survived the passage of fire in termite mound refugia. Before the fire, grassland was used more than thickets, but habitat utilization shifted to thickets after fire had removed the grass cover. Thickets were an important refuge both pre- and post-fire, but the proportion of thicket within the home range was greater post-fire. We conclude that fire-induced habitat modification resulted in a restriction of E. brachyrhynchus movements to patches of unburned vegetation. This may be a behavioural response to an increase in predation pressure associated with a reduction in cover, rather than a lack of food. This study highlights the importance of considering the landscape mosaic in fire management and allowing sufficient island patches to remain post-fire ensures the persistence of the small mammal fauna

    Grip Force Reveals the Context Sensitivity of Language-Induced Motor Activity during “Action Words

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    Studies demonstrating the involvement of motor brain structures in language processing typically focus on \ud time windows beyond the latencies of lexical-semantic access. Consequently, such studies remain inconclusive regarding whether motor brain structures are recruited directly in language processing or through post-linguistic conceptual imagery. In the present study, we introduce a grip-force sensor that allows online measurements of language-induced motor activity during sentence listening. We use this tool to investigate whether language-induced motor activity remains constant or is modulated in negative, as opposed to affirmative, linguistic contexts. Our findings demonstrate that this simple experimental paradigm can be used to study the online crosstalk between language and the motor systems in an ecological and economical manner. Our data further confirm that the motor brain structures that can be called upon during action word processing are not mandatorily involved; the crosstalk is asymmetrically\ud governed by the linguistic context and not vice versa

    The role of faith-based health professions schools in Cameroon’s health system

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    Faith-based health professions schools contribute to the training of staff in many Sub-Saharan African countries. Yet little is known about these actors, their role in the health system, potential comparative advantages and challenges faced. This is a qualitative study drawing on 24 qualitative interviews and 3 focus group discussions. Participants included faith-based health professions schools, staff at faith-based health professions schools, Ministry of Health officials and donors. Thematic analysis was used to analyse the data. The findings reveal that understanding of faith-based health professions schools held by donors and the Ministry of Health rest on a set of assumptions rather than evidence-backed knowledge and that knowledge on key aspects is missing (not least on the market share of such actors). This suggests that collaboration with and oversight of these non-state schools is limited, raising questions about the balance of state regulation and control in the public-private mix for training health workers. Linked to this weak oversight, the findings also raise concerns over a number of problematic activities at these schools, unaccredited training programmes and the presence of missionary volunteers whose presence and actions are rarely interrogated

    Fractional-order operators: Boundary problems, heat equations

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    The first half of this work gives a survey of the fractional Laplacian (and related operators), its restricted Dirichlet realization on a bounded domain, and its nonhomogeneous local boundary conditions, as treated by pseudodifferential methods. The second half takes up the associated heat equation with homogeneous Dirichlet condition. Here we recall recently shown sharp results on interior regularity and on LpL_p-estimates up to the boundary, as well as recent H\"older estimates. This is supplied with new higher regularity estimates in L2L_2-spaces using a technique of Lions and Magenes, and higher LpL_p-regularity estimates (with arbitrarily high H\"older estimates in the time-parameter) based on a general result of Amann. Moreover, it is shown that an improvement to spatial CC^\infty -regularity at the boundary is not in general possible.Comment: 29 pages, updated version, to appear in a Springer Proceedings in Mathematics and Statistics: "New Perspectives in Mathematical Analysis - Plenary Lectures, ISAAC 2017, Vaxjo Sweden
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