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Broad Questions (broad + question)
Selected AbstractsProlactin Levels in Sudden Unexpected Death in EpilepsyEPILEPSIA, Issue 1 2000K. Opeskin Summary: Purpose: To assess serum prolactin levels in sudden unexpected death in epilepsy (SUDEP) and control groups to test the hypothesis that if seizures occur routinely as a terminal event in SUDEP, then raised prolactin levels may be an indicator of terminal seizure. Methods: Blood was taken for measurement of prolactin levels from subjects with SUDEP and three control groups. The control groups were those with epilepsy dying from causes other than epilepsy (e.g., ischemic heart disease or injuries), physiologically stressed individuals without epilepsy (they were admitted to the hospital after an acute illness and died after several hours to 3 days), and nonepileptic rapid deaths (these people collapsed suddenly and died at the scene). In the SUDEP group, evidence for terminal seizure was considered to be at least one of the following: body found half on, half off the bed, or urinary incontinence at the scene, or bitten lips or tongue at autopsy. Results: There was evidence for terminal seizure at the scene or at autopsy in four of the 10 SUDEP cases. Serum prolactin levels were not significantly increased in the SUDEP group compared with the controls. None of the SUDEP subjects, including those with clinical evidence of a terminal seizure, had high prolactin levels characteristic of those observed after seizures in living subjects. Conclusions: Prolactin levels are not raised in SUDEP, even if there is evidence of terminal seizure. As prolactin takes 15,20 min to peak after a seizure in life, there may be insufficient time for a prolactin increase to occur in SUDEP. Thus prolactin levels cannot be used to determine if a deceased individual with epilepsy had a seizure or to answer the broad question whether SUDEP is always associated with a terminal seizure. [source] Drawing in Perspective: Scottish Art and Design Teachers Discuss DrawingINTERNATIONAL JOURNAL OF ART & DESIGN EDUCATION, Issue 2 2005Glen Coutts What are the main purposes of drawing in the secondary art and design curriculum? What are Scottish art teachers' views on the role and function of drawing? How is drawing taught in Scottish schools? These three broad questions formed the basis of the research reported in this article. The small-scale study, carried out between June 2002 and June 2004 will, the authors hope, be of interest to art educators seeking to explore the teaching of drawing as a key component of art and design education. In this article, we report on the background to the study, the place of drawing in Scottish art education, the methodology used, discuss some of the respondents' comments and conclude with some reflections and thoughts for future study. [source] Neuroimaging of Language: Why Hasn't a Clearer Picture Emerged?LINGUISTICS & LANGUAGE COMPASS (ELECTRONIC), Issue 4 2009Evelina Fedorenko Two broad questions have driven dozens of studies on the neural basis of language published in the last several decades: (i) Are distinct cortical regions engaged in different aspects of language? (ii) Are regions engaged in language processing specific to the domain of language? Neuroimaging has not yet provided clear answers to either question. In this paper, we discuss one factor that is a likely contributor to the unclear state of affairs in the neurocognition of language, and that, in our opinion, has not received sufficient attention in the recent literature. In particular, fMRI studies of language have relied, almost exclusively, on group analyses, in which data from multiple individuals are co-registered to and analyzed in a common space. We argue that this approach can obscure functional specificity because of the anatomical variability across individual brains, and we advocate the use of an alternative approach , the functional localization approach , that circumvents this problem. [source] Linguistic Anthropology at the End of the Naughts: A Review of 2009AMERICAN ANTHROPOLOGIST, Issue 2 2010Francis Cody ABSTRACT, Here I consider some of the major themes that emerged in linguistic anthropology in 2009, focusing on intersections with other disciplinary fields. Research on globalization, citizenship, publics, footing, and register formation shows how linguistic anthropology has developed a distinctive set of tools to address broad questions in the human sciences. The subdiscipline remains centrally concerned with the semiotic qualities specific to language and the forms of social life that these qualities enable. "Language" has not yet dissolved into a weak adjective in quite the same way that "culture" or "society" seem to have done, and much of the most sophisticated conceptual work on the semiotics of life lived collectively continues to focus on the concrete aspects of this multifaceted phenomenon. Linguistic anthropology maintains a relatively stable theoretical core compared to its subdisciplinary siblings, even if few of us would agree on what constitutes the limits of the field. [source] The method of synthesis in ecologyOIKOS, Issue 1 2001E. David Ford Synthesis of results from different investigations is an important activity for ecologists but when compared with analysis the method of synthesis has received little attention. Ecologists usually proceed intuitively and this can lead to a problem in defining differences between the syntheses made by different scientists. It also leads to criticism from scientists favoring analytical approaches that the construction of general theory is an activity that does not follow the scientific method. We outline a methodology for scientific inference about integrative concepts and the syntheses made in constructing them and illustrate how this can be applied in the development of general theory from investigations into particular ecological systems. The objective is to construct a causal scientific explanation. This has four characteristics. (1) It defines causal and/or organizational processes that describe how systems function. (2) These processes are consistent , under the same conditions they will produce the same effect. (3) A causal scientific explanation provides general information about events of a similar kind. (4) When experiments are possible then a designed manipulation will produce a predictable response. The essential characteristic of making synthesis to construct a causal scientific explanation is that it is progressive and we judge progress made by assessing the coherence of the explanation using six criteria: acceptability of individual propositions including that they have been tested with data, consistency of concept definitions, consistency in the type of concepts used in making the explanation, that ad hoc propositions are not used, that there is economy in the number of propositions used, that the explanation applies to broad questions. We illustrate development of a causal scientific explanation for the concept of long-lived pioneer tree species, show how the coherence of this explanation can be assessed, and how it could be improved. [source] Evaluating the role of the dingo as a trophic regulator in Australian ecosystemsAUSTRAL ECOLOGY, Issue 5 2007A. S. GLEN Abstract The importance of strongly interactive predators has been demonstrated in many ecosystems, and the maintenance or restoration of species interactions is a major priority in the global conservation of biodiversity. By limiting populations of prey and/or competitors, apex predators can increase the diversity of systems, often exerting influences that cascade through several trophic levels. In Australia, emerging evidence points increasingly towards the dingo (Canis lupus dingo) as a strongly interactive species that has profound effects on ecosystem function. Through predatory and competitive effects, dingoes can alter the abundance and function of mesopredators including the introduced red fox (Vulpes vulpes) and feral cat (Felis catus), and herbivores including the European rabbit (Oryctolagus cuniculus). These effects often benefit populations of native prey, and diversity and biomass of vegetation, but may not occur under all circumstances. For example, the social structure of dingoes is of great importance; a pack subject to minimal human interference regulates its own numbers, and such packs appear to have fewer undesirable impacts such as predation on livestock. Despite abundant observational evidence that the dingo is a strong interactor, there have been few attempts to test its ecological role experimentally. Given the well-recognized importance of species interactions to ecosystem function, it is imperative that such experiments be carried out. To do this, we propose three broad questions: (i) do dingoes limit the abundance of other predators or prey? (ii) do dingoes affect the ecological relationships of other predators or prey (e.g. by altering their spatial or temporal activity patterns)? and (iii) does the removal or reintroduction of dingoes entrain ecological cascades? Finally, we discuss the design of appropriate experiments, using principles that may also be applied to investigate species interactions on other continents. Research might seek to clarify not only the impacts of dingoes at all trophic levels, but also the mechanisms by which these impacts occur. [source] | |||||||||||||