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Seeking Systematicity in Variation: Theoretical and Methodological Considerations on the "Variety" Concept.

ABSTRACT: One centennial discussion in linguistics concerns whether languages, or linguistic systems, are, essentially, homogeneous or rather show "structured heterogeneity." In this contribution, the question is addressed whether and how sociolinguistically defined systems (or 'varieties') are to be distinguished in a heterogeneous linguistic landscape: to what extent can structure be found in the myriads of language variants heard in everyday language use? We first elaborate on the theoretical importance of this 'variety question' by relating it to current approaches from, among others, generative linguistics (competing grammars), sociolinguistics (style-shifting, polylanguaging), and cognitive linguistics (prototype theory). Possible criteria for defining and detecting varieties are introduced, which are subsequently tested empirically, using a self-compiled corpus of spoken Dutch in West Flanders (Belgium). This empirical study demonstrates that the speech repertoire of the studied West Flemish speakers consists of four varieties, viz. a fairly stable dialect variety, a more or less virtual standard Dutch variety, and two intermediate varieties, which we will label 'cleaned-up dialect' and 'substandard.' On the methodological level, this case-study underscores the importance of speech corpora comprising both inter- and intra-speaker variation on the one hand, and the merits of triangulating qualitative and quantitative approaches on the other.

SUBMITTER: Ghyselen AS

PROVIDER: S-EPMC5879321 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Seeking Systematicity in Variation: Theoretical and Methodological Considerations on the "Variety" Concept.

Ghyselen Anne-Sophie AS De Vogelaer Gunther G

Frontiers in psychology 20180326

One centennial discussion in linguistics concerns whether languages, or linguistic systems, are, essentially, homogeneous or rather show "structured heterogeneity." In this contribution, the question is addressed whether and how sociolinguistically defined systems (or 'varieties') are to be distinguished in a heterogeneous linguistic landscape: to what extent can structure be found in the myriads of language variants heard in everyday language use? We first elaborate on the theoretical importanc ...[more]

PMID: 29632503

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Project description:BackgroundMicrodialysis is a technique that can be utilized to sample the interstitial fluid of the central nervous system (CNS), including in primary malignant brain tumors known as gliomas. Gliomas are mainly accessible at the time of surgery, but have rarely been analyzed via interstitial fluid collected via microdialysis. To that end, we obtained an investigational device exemption for high molecular weight catheters (HMW, 100 kDa) and a variable flow rate pump to perform microdialysis at flow rates amenable to an intra-operative setting. We herein report on the lessons and insights obtained during our intra-operative HMW microdialysis trial, both in regard to methodological and analytical considerations.MethodsIntra-operative HMW microdialysis was performed during 15 clinically indicated glioma resections in fourteen patients, across three radiographically diverse regions in each patient. Microdialysates were analyzed via targeted and untargeted metabolomics via ultra-performance liquid chromatography tandem mass spectrometry.ResultsUse of albumin and lactate-containing perfusates impacted subsets of metabolites evaluated via global metabolomics. Additionally, focal delivery of lactate via a lactate-containing perfusate, induced local metabolic changes, suggesting the potential for intra-operative pharmacodynamic studies via reverse microdialysis of candidate drugs. Multiple peri-operatively administered drugs, including levetiracetam, cefazolin, caffeine, mannitol and acetaminophen, could be detected from one microdialysate aliquot representing 10 min worth of intra-operative sampling. Moreover, clinical, radiographic, and methodological considerations for performing intra-operative microdialysis are discussed.ConclusionsIntra-operative HMW microdialysis can feasibly be utilized to sample the live human CNS microenvironment, including both metabolites and drugs, within one surgery. Certain variables, such as perfusate type, must be considered during and after analysis. Trial registration NCT04047264.

Dataset Information

Seeking Systematicity in Variation: Theoretical and Methodological Considerations on the "Variety" Concept.

Publications

Seeking Systematicity in Variation: Theoretical and Methodological Considerations on the "Variety" Concept.

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