29 research outputs found

    Exploring the association of Brownfield remediation status with socioeconomic conditions in Wayne County, MI

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    Urban neighborhoods with locations of environmental contamination, known as brownfields, impact entire neighborhoods, but corrective environmental remedial action on brownfields is often tracked on an individual property basis, neglecting the larger neighborhood-level impact. This study addresses this impact by examining spatial differences between brownfields with unmitigated environmental concerns (open site) and sites that are considered fully mitigated or closed in urban neighborhoods (closed site) on the US census tract scale in Wayne County, MI. Michigan’s Department of Environment, Great Lakes, and Energy’s leaking underground storage tank (LUST) database provided brownfield information for Wayne County. Local indicators of spatial association (LISA) produced maps of spatial clustering and outliers. A McNemar’s test demonstrated significant discordances in LISA categories between LUST open and closed sites (p\u3c0.001). Geographically weighted regressions (GWR) evaluated the association between open and closed site spatial density (open-closed) with socioeconomic variables (population density, proportion of White or Black residents, proportion of college educated populations, the percentage of owner-occupied units, vacant units, rented units, and median household value). Final multivariate GWR showed that population density, being Black, college education, vacant units, and renter occupied units were significantly associated (p\u3c0.05) with open-closed, and that those associations varied across Wayne County. Increases in Black population was associated with increased open-closed. Increases in vacant units, renter-occupied units, and college education were associated with decreased open-closed. These results provide input for environmental justice research to identify inequalities and discover the distribution of environmental hazards among urban neighborhoods

    Large expert-curated database for benchmarking document similarity detection in biomedical literature search

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    Document recommendation systems for locating relevant literature have mostly relied on methods developed a decade ago. This is largely due to the lack of a large offline gold-standard benchmark of relevant documents that cover a variety of research fields such that newly developed literature search techniques can be compared, improved and translated into practice. To overcome this bottleneck, we have established the RElevant LIterature SearcH consortium consisting of more than 1500 scientists from 84 countries, who have collectively annotated the relevance of over 180 000 PubMed-listed articles with regard to their respective seed (input) article/s. The majority of annotations were contributed by highly experienced, original authors of the seed articles. The collected data cover 76% of all unique PubMed Medical Subject Headings descriptors. No systematic biases were observed across different experience levels, research fields or time spent on annotations. More importantly, annotations of the same document pairs contributed by different scientists were highly concordant. We further show that the three representative baseline methods used to generate recommended articles for evaluation (Okapi Best Matching 25, Term Frequency-Inverse Document Frequency and PubMed Related Articles) had similar overall performances. Additionally, we found that these methods each tend to produce distinct collections of recommended articles, suggesting that a hybrid method may be required to completely capture all relevant articles. The established database server located at https://relishdb.ict.griffith.edu.au is freely available for the downloading of annotation data and the blind testing of new methods. We expect that this benchmark will be useful for stimulating the development of new powerful techniques for title and title/abstract-based search engines for relevant articles in biomedical research.Peer reviewe

    Training communities, training graduate students: The 2012 Oklahoma Breath of Life Workshop

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    While grassroots organizations like the American Indian Language Development Institute have long shown the importance of training to indigenous language communities, an increasing emphasis on training in language documentation and revitalization is emerging in new funding initiatives and training institutes and consortia world-wide. In this current atmosphere, the 2012 Oklahoma Breath of Life Workshop presents a case study in training in which the goals of training indigenous community members and graduate students can take place simultaneously. With the rising prominence of training models in language documentation and revitalization, and the practical dimension faced by limitations on resources like personnel and funding, the importance of satisfying multiple goals in a single training venue cannot be underestimated. Three factors underlie the successes of the 2012 OKBOL: team selection process; mentoring; final day activities and reflection. First, the team selection process made use of labor distribution. One Co-Director took primary responsibility for recruitment of participants. The other Co-Director had a larger pool of graduate linguistics students to draw from, and so took responsibility for mentor recruitment. Regular communication between the two ensured appropriate pairing, especially important considering the diverse languages represented in Oklahoma. Potential student mentors participated at various pre-BOL workshops, allowing both Co-Directors opportunities to evaluate their mentoring abilities in actual training contexts. Second, the teaching team during the week of the OKBOL represented experienced participants in indigenous language revitalization. In particular, Mr. Daryl Baldwin set the theme of language in the home, and contributed his perspective as a Miami tribal member involved in language reclamation. The instructors met with the mentors in a pre-workshop session and a mid- week mentoring session, where all shared impressions and made adjustments to best serve the participants' needs. Finally, the last day activities were designed to empower the participants and allow the co-directors to assess the success of the activities. Like the California Breath of Life, OKBOL participants shared a final project with all attendees. Community participants filled out a formal evaluation form of the week's events and activities. Graduate students wrote a short reflection on their experiences, drawing on the reflective practices associated with theories of service-learning (Author 2010). The 2012 OKBOL demonstrates how to train two diverse audiences as part of a single workshop. This case study can help other training venues build capacity with limited personnel and funding in an effective manner

    Exploring the association of Brownfield remediation status with socioeconomic conditions in Wayne County, MI

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    Urban neighborhoods with locations of environmental contamination, known as brownfields, impact entire neighborhoods, but corrective environmental remedial action on brownfields is often tracked on an individual property basis, neglecting the larger neighborhood-level impact. This study addresses this impact by examining spatial differences between brownfields with unmitigated environmental concerns (open site) and sites that are considered fully mitigated or closed in urban neighborhoods (closed site) on the US census tract scale in Wayne County, MI. Michigan\u27s Department of Environment, Great Lakes, and Energy\u27s leaking underground storage tank (LUST) database provided brownfield information for Wayne County. Local indicators of spatial association (LISA) produced maps of spatial clustering and outliers. A McNemar\u27s test demonstrated significant discordances in LISA categories between LUST open and closed sites (p \u3c 0.001). Geographically weighted regressions (GWR) evaluated the association between open and closed site spatial density (open-closed) with socioeconomic variables (population density, proportion of White or Black residents, proportion of college educated populations, the percentage of owner-occupied units, vacant units, rented units, and median household value). Final multivariate GWR showed that population density, being Black, college education, vacant units, and renter occupied units were significantly associated (p \u3c 0.05) with open-closed, and that those associations varied across Wayne County. Increases in Black population was associated with increased open-closed. Increases in vacant units, renter-occupied units, and college education were associated with decreased open-closed. These results provide input for environmental justice research to identify inequalities and discover the distribution of environmental hazards among urban neighborhoods
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