How Black Does Obama Sound Now?: Testing Listener Judgments of Intonation in Incrementally Manipulated Speech

Recent research in perceptual sociolinguistics has investigated a host of variables—primarily segmental—to assess the extent to which social meanings are constructed in perception similarly to the way they are constructed in ongoing production. Despite production research in sociolinguistics that has demonstrated how speakers use intonational variation to index various ethnic identities and social stances (Burdin 2015, Holliday 2016, Reed 2016), there has been a general lack of perceptual research on the social meanings of intonational variables. At the same time, research in perceptual sociolinguistics has not confronted the issue of whether social meanings are incremental—that is, does a more phonetically extreme token of a socially marked variable correspond to a stronger social meaning? We address these gaps in research by testing listener judgments of manipulations of Barack Obama\u27s utterances in one interview. In this perceptual task, critical stimuli were declarative Intonational Phrases with H* and/or L+H* pitch accents (Beckman et al. 2007) that were manipulated to four manipulation steps, with successively more extreme F0 maxima and minima with each step. Ninety-three American English listeners rated 80 critical stimuli and 40 filler stimuli (excerpted from the same interview of Obama) on the question, How Black does Obama sound here? , using a slider bar. A mixed-effects regression model was conducted for listener ratings of blackness by assessing the interaction of Phrase Type (H* only vs. L+H*) and Manipulation Step. Listeners perceived stimuli with at least one L+H* token as sounding more black than those without, but only for phrases with more phonetically extreme realizations of the L+H* contour. These results demonstrate that listeners are sensitive to stepwise manipulations of the F0 contour, indicating that incrementality affects social meanings of intonational variables and providing a promising new direction for studies on listener judgments of ethnicity

Novel Distances for Dollo Data

We investigate distances on binary (presence/absence) data in the context of a Dollo process, where a trait can only arise once on a phylogenetic tree but may be lost many times. We introduce a novel distance, the Additive Dollo Distance (ADD), which is consistent for data generated under a Dollo model, and show that it has some useful theoretical properties including an intriguing link to the LogDet distance. Simulations of Dollo data are used to compare a number of binary distances including ADD, LogDet, Nei Li and some simple, but to our knowledge previously unstudied, variations on common binary distances. The simulations suggest that ADD outperforms other distances on Dollo data. Interestingly, we found that the LogDet distance performs poorly in the context of a Dollo process, which may have implications for its use in connection with conditioned genome reconstruction. We apply the ADD to two Diversity Arrays Technology (DArT) datasets, one that broadly covers Eucalyptus species and one that focuses on the Eucalyptus series Adnataria. We also reanalyse gene family presence/absence data on bacteria from the COG database and compare the results to previous phylogenies estimated using the conditioned genome reconstruction approach

Distributional extensions of Carollia castanea and Micronycteris minuta from Guatemala, Central America

Field expeditions in 2011 that inventoried the terrestrial vertebrate fauna of two wildlife protected areas in the tropical Caribbean of Guatemala have produced the first confirmed records of two bats for the country: the white-bellied big-eared bat, Micronycteris (Schizonycteris) minuta (Gervais 1856) and the Chesnut short-tailed bat Carollia castanea H. Allen, 1890, both of neotropical distribution and with their current northern limit at Lancetilla, Honduras. The record of M. minuta at Sierra de Caral, Guatemala extends the range of this species 137 km to the west, and the record of C. castanea at Cerro San Gil extends its range 147 km to the west

Hospital malnutrition in a low-resources country: A survey and critique of the status of the published available literature

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Updating of user requirements of elderly and disabled drivers and travellers

The user requirements have been reassessed in the light of the results from the collaborative evaluations with other Transport Telematics Projects, as well as data and expertise gathered from the literature and other experts in the field. The user requirements identified are also the fundamental base for the development of different parts of the TELSCAN project. User requirements cover, of course, a multitude of different aspects, and to demonstrate how they have been integrated into the project’s output, they have been grouped into the following categories: • System function requirements • Interface requirements • Information requirements • Protocol requirements

Urine culture doubtful in determining etiology of diffuse symptoms among elderly individuals: a cross-sectional study of 32 nursing homes

Background: The high prevalence of bacteriuria in elderly individuals makes it difficult to know if a new symptom is related to bacteria in the urine. There are different views concerning this relationship and bacteriuria often leads to antibiotic treatments. The aim of this study was to investigate the relationship between bacteria in the urine and new or increased restlessness, fatigue, confusion, aggressiveness, not being herself/himself, dysuria, urgency and fever in individuals at nursing homes for elderly when statistically considering the high prevalence of asymptomatic bacteriuria in this population.\ud \ud Methods: In this cross-sectional study symptoms were registered and voided urine specimens were collected for urinary cultures from 651 elderly individuals. Logistic regressions were performed to evaluate the statistical correlation between bacteriuria and presence of a symptom at group level. To estimate the clinical relevance of statistical correlations at group level positive and negative etiological predictive values (EPV) were calculated.\ud \ud Results: Logistic regression indicated some correlations at group level. Aside from Escherichia coli in the urine and not being herself/himself existing at least one month, but less than three months, EPV indicated no clinically useful correlation between any symptoms in this study and findings of bacteriuria.\ud \ud Conclusions: Urinary cultures provide little or no useful information when evaluating diffuse symptoms among elderly residents of nursing homes. Either common urinary tract pathogens are irrelevant, or urine culture is an inappropriate test

Using the travelling task as a tool to define its requirements for elderly and disabled people

This paper describes the methods and tools used by the TELSCAN project to identify the requirements of elderly and disabled (E&D) travellers with various types of functional impairments. A Definition of the Travelling Task for different modes of private and public transport was used to capture the needs of E&D travellers through interviews with experts and focus groups with users. The data collection resulted in a generic specification of user requirements, in general and those specific to telematics, for elderly and disabled travellers. This methodology and data can guide the design of ITS and can provide a stepping stone to capture system-specific data to ensure that the needs of elderly and disabled people are included in the design process