Social media data provides an opportunity for rethinking spatial inequalities in American cities

In recent months, many have pointed to the role of spatial segregation as a major factor in restricting the life chances of black citizens. Using a dataset of 5.7 million geotagged tweets from Louisville, Kentucky, Taylor Shelton investigates how the spatial inequalities that stem from this segregation play out in practice, finding that people from different sections of the city use the urban landscape in very different ways

CONSTRUCTING COLDSTREAM: SUSTAINABILITY AND THE POLITICS OF LOCAL ECONOMIC DEVELOPMENT

This thesis explores the evolution of the Coldstream Research Campus, a high-tech research park operated by the University of Kentucky. Conceived of in the late 1980s and built in 1992, Coldstream was expected to become the „economic engine‟ of central Kentucky through the commercialization of applied scientific and technological research coming out of the university. Twenty years later, with Coldstream having failed to live up to expectations, the university initiated the process of updating the Coldstream Master Plan to incorporate a decided emphasis on the concept of sustainability. Through a mix of archival research and semi-structured interviews, this thesis argues that the newfound emphasis on sustainability is important insofar as it opens up the possibility for perpetuating the existence of the Coldstream Research Campus as a real estate development, even in spite of its failures in other arenas

The Urban Geographical Imagination in the Age of Big Data

This paper explores the variety of ways that emerging sources of (big) data are being used to re-conceptualize the city, and how these understandings of what the urban is shapes the design of interventions into it. Drawing on work on the performativity of economics, this paper uses two vignettes of the ‘new urban science’ and municipal vacant property mapping in order to argue that the mobilization of Big Data in the urban context doesn’t necessarily produce a single, greater understanding of the city as it actually is, but rather a highly variegated series of essentialized understandings of the city that render it knowable, governable and intervene-able. Through the construction of new, data-driven urban geographical imaginaries, these projects have opened up the space for urban interventions that work to depoliticize urban injustices and valorize new kinds of technical expertise as the means of going about solving these problems, opening up new possibilities for a remaking of urban space in the image of these sociotechnical paradigms. Ultimately, this paper argues that despite the importance of Big Data, as both a discourse and practice, to emerging forms of urban research and management, there is no singular or universal understanding of the urban that is promoted or developed through the application of these new sources of data, which in turn opens up meaningful possibilities for developing alternative uses of Big Data for understanding and intervening in the city in more emancipatory ways

Empowering Primary Caregivers to Employ Dialogic Reading Techniques: A Systematic Review of Dialogic Reading Interventions When Implemented by Primary Caregivers, Teachers, and Clinicians

The purpose of this systematic literature review is to compare results of dialogic reading interventions when implemented by primary caregivers versus when implemented in schools either in small group or classroom settings

“A Threat on the Ground”: The Consequences of Witnessing Stereotype-Confirming Ingroup Members in Interracial Interactions

Objectives: Three studies explored interpersonal consequences of engaging in interracial interactions after witnessing racial ingroup members’ stereotypical behavior. Method: Study 1 used experience-sampling methodology to assess ethnic minority students’ (n = 119) intergroup anxiety, metastereotypes, and anticipatory behaviors following one of three types of interpersonal interactions: (a) a White person and a racial ingroup member who had behaved stereotypically, (b) a White person and a nonstereotypical ingroup member, or (c) neither. Studies 2 (n = 273) and 3 (n = 379) experimentally examined whether witnessing an ingroup member’s stereotypically negative behavior in interracial interactions, compared to stereotypically positive (Study 2) or nonstereotypically negative behavior (Study 3) differentially affected anxiety, metastereotypes, and anticipatory behaviors in interracial versus intraracial interactions among Black Americans. Results: In Study 1, minorities reported greater anxiety, metastereotypes, and motivation to disprove stereotypes, but less interest in future interracial contact, following interracial interactions involving stereotype-confirming ingroup members compared to other interactions. In Studies 2 and 3, adverse interaction consequences were most severe when ingroup behavior was both negative and stereotypical compared to neutral, stereotypically positive, and nonstereotypically negative ingroup behavior. Additionally, metastereotypes (and, to a lesser degree, anxiety) mediated individuals’ motivation to disprove stereotypes and desire future interactions with White witnesses following stereotypically negative ingroup behavior in interracial (vs. intraracial) interactions. Conclusions: This research highlights the emotional, metaperceptual, and motivational outcomes following ingroup members’ stereotypical behavior in intergroup contexts that extend beyond dyadic encounters

Scalability of Hydrodynamic Simulations

Many hydrodynamic processes can be studied in a way that is scalable over a vastly relevant physical parameter space. We systematically examine this scalability, which has so far only briefly discussed in astrophysical literature. We show how the scalability is limited by various constraints imposed by physical processes and initial conditions. Using supernova remnants in different environments and evolutionary phases as application examples, we demonstrate the use of the scaling as a powerful tool to explore the interdependence among relevant parameters, based on a minimum set of simulations. In particular, we devise a scaling scheme that can be used to adaptively generate numerous seed remnants and plant them into 3D hydrodynamic simulations of the supernova-dominated interstellar medium.Comment: 12 pages, 1 figure, submitted to MNRAS; comments are welcom

On the metal abundances inside mixed-morphology supernova remnants: the case of IC443 and G166.0+4.3

Recent developments on the study of mixed morphology supernova remnants (MMSNRs) have revealed the presence of metal rich X-ray emitting plasma inside a fraction of these remnant, a feature not properly addressed by traditional models for these objects. Radial profiles of thermodynamical and chemical parameters are needed for a fruitful comparison of data and model of MMSNRs, but these are available only in a few cases. We analyze XMM-Newton data of two MMSNRs, namely IC443 and G166.0+4.3, previously known to have solar metal abundances, and we perform spatially resolved spectral analysis of the X-ray emission. We detected enhanced abundances of Ne, Mg and Si in the hard X-ray bright peak in the north of IC443, and of S in the outer regions of G166.0+4.3. The metal abundances are not distributed uniformly in both remnants. The evaporating clouds model and the radiative SNR model fail to reproduce consistently all the observational results. We suggest that further deep X-ray observations of MMSNRs may reveal more metal rich objects. More detailed models which include ISM-ejecta mixing are needed to explain the nature of this growing subclass of MMSNRs.Comment: A&A in press. For journal style pdf file, http://www.astropa.unipa.it/Library/OAPA_preprints/fb10742.pd

Predictive Values of Self‐Reported Periodontal Need: National Health and Nutrition Examination Survey III

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/142204/1/jper1551.pd

Sociodemographic characteristics and diabetes predict invalid self-reported non-smoking in a population-based study of U.S. adults

BACKGROUND: Nearly all studies reporting smoking status collect self-reported data. The objective of this study was to assess sociodemographic characteristics and selected, common smoking-related diseases as predictors of invalid reporting of non-smoking. Valid self-reported smoking may be related to the degree to which smoking is a behavior that is not tolerated by the smoker's social group. METHODS: True smoking was defined as having serum cotinine of 15+ng/ml. 1483 "true" smokers 45+ years of age with self-reported smoking and serum cotinine data from the Mobile Examination Center were identified in the third National Health and Nutrition Examination Survey. Invalid non-smoking was defined as "true" smokers self-reporting non-smoking. To assess predictors of invalid self-reported non-smoking, odds ratios (OR) and 95% confidence intervals (CI) were calculated for age, race/ethnicity-gender categories, education, income, diabetes, hypertension, and myocardial infarction. Multiple logistic regression modeling took into account the complex survey design and sample weights. RESULTS: Among smokers with diabetes, invalid non-smoking status was 15%, ranging from 0% for Mexican-American (MA) males to 22%–25% for Non-Hispanic White (NHW) males and Non-Hispanic Black (NHB) females. Among smokers without diabetes, invalid non-smoking status was 5%, ranging from 3% for MA females to 10% for NHB females. After simultaneously taking into account diabetes, education, race/ethnicity and gender, smokers with diabetes (OR(Adj )= 3.15; 95% CI: 1.35–7.34), who did not graduate from high school (OR(Adj )= 2.05; 95% CI: 1.30–3.22) and who were NHB females (OR(Adj )= 5.12; 95% CI: 1.41–18.58) were more likely to self-report as non-smokers than smokers without diabetes, who were high school graduates, and MA females, respectively. Having a history of myocardial infarction or hypertension did not predict invalid reporting of non-smoking. CONCLUSION: Validity of self-reported non-smoking may be related to the relatively slowly progressing chronic nature of diabetes, in contrast with the acute event of myocardial infarction which could be considered a more serious, major life changing event. These data also raise questions regarding the possible role of societal desirability in the validity of self-reported non-smoking, especially among smokers with diabetes, who did not graduate from high school, and who were NHB females