111 research outputs found
Anne Arundel County: Transportation Mobility and Accessibility
Final project for URSP688L: Planning Technologies (Fall 2016). University of Maryland, College Park.This report examines where jobs and workforce participants are located in Anne Arundel County, and what transit options connect them. Special attention is paid to low-income workforce participants and low-income job sites. The goal is to determine if there is a spatial mismatch between where workforce participants live and where jobs are located in Anne Arundel County, and to assess whether or not transit options address that mismatch. To this end, we have produced maps that identify transit coverage, major clusters of low-income workersâ residences and job locations, and transit captivity, which is a measure of households that have no private transportation option and are reliant on public transportation. What we found was that transit within the county is connected to most residential neighborhoods and employment centers, though it doesnât comprehensively serve each neighborhood or employment area it touches. Some residential communities, such as Cape St. Claire and job centers including a cluster around the I-97/Crain Highway intersection, completely lack transit services. The report also identifies communities that may contain transit dependent individuals. Based on our findings, we recommend further study of transit dependent populations and feasibility studies to expand transit services to underserved areas. The findings come with caveats; we did not have origin-destination data, so analysis of transit patterns cannot pinpoint actual behaviors. Also, the employment data used excluded federal employees, meaning Ft. Meade, an area of signficiant employment in the county, was not included in the dataset.Anne Arundel County & Annapoli
A consensus statement by the Society for Cardiovascular Magnetic Resonance (SCMR) endorsed by the European Association for Cardiovascular Imaging (EACVI)
Parametric mapping techniques provide a non-invasive tool for quantifying
tissue alterations in myocardial disease in those eligible for cardiovascular
magnetic resonance (CMR). Parametric mapping with CMR now permits the routine
spatial visualization and quantification of changes in myocardial composition
based on changes in T1, T2, and T2*(star) relaxation times and extracellular
volume (ECV). These changes include specific disease pathways related to
mainly intracellular disturbances of the cardiomyocyte (e.g., iron overload,
or glycosphingolipid accumulation in Anderson-Fabry disease); extracellular
disturbances in the myocardial interstitium (e.g., myocardial fibrosis or
cardiac amyloidosis from accumulation of collagen or amyloid proteins,
respectively); or both (myocardial edema with increased intracellular and/or
extracellular water). Parametric mapping promises improvements in patient care
through advances in quantitative diagnostics, inter- and intra-patient
comparability, and relatedly improvements in treatment. There is a multitude
of technical approaches and potential applications. This document provides a
summary of the existing evidence for the clinical value of parametric mapping
in the heart as of mid 2017, and gives recommendations for practical use in
different clinical scenarios for scientists, clinicians, and CMR
manufacturers
Does Stellar Feedback Create HI Holes? An HST/VLA Study of Holmberg II
We use deep HST/ACS F555W and F814W photometry of resolved stars in the M81
Group dwarf irregular galaxy Ho II to study the hypothesis that the holes
identified in the neutral ISM (HI) are created by stellar feedback. From the
deep photometry, we construct color-magnitude diagrams (CMDs) and measure the
star formation histories (SFHs) for stars contained in HI holes from two
independent holes catalogs, as well as select control fields, i.e., similar
sized regions that span a range of HI column densities. Converting the recent
SFHs into stellar feedback energies, we find that enough energy has been
generated to have created all holes. However, the required energy is not always
produced over a time scale that is less than the estimated kinematic age of the
hole. The combination of the CMDs, recent SFHs, and locations of young stars
shows that the stellar populations inside HI holes are not coherent,
single-aged, stellar clusters, as previously suggested, but rather multi-age
populations distributed across each hole. From a comparison of the modeled and
observed integrated magnitudes, and the locations and energetics of stars
inside of HI holes, we propose a potential new model: a viable mechanism for
creating the observed HI holes in Ho II is stellar feedback from multiple
generations of SF spread out over tens or hundreds of Myr, and thus, the
concept of an age for an HI hole is intrinsically ambiguous. We further find
that \halpha and 24 micron emission, tracers of the most recent star formation,
do not correlate well with the positions of the HI holes. However, UV emission,
which traces star formation over roughly the last 100 Myr, shows a much better
correlation with the locations of the HI holes.Comment: Accepted for Publication in The Astrophysical Journal; 28 Pages, 31
Figures, a version of this paper with full resolution figures is available at
http://homepages.spa.umn.edu/~dweisz/ho_ii_weisz.pd
The M81 Group Dwarf Irregular Galaxy DDO 165. II. Connecting Recent Star Formation with ISM Structures and Kinematics
We compare the stellar populations and complex neutral gas dynamics of the
M81 group dIrr galaxy DDO 165 using data from the HST and the VLA. Paper I
identified two kinematically distinct HI components, multiple localized high
velocity gas features, and eight HI holes and shells (the largest of which
spans ~2.2x1.1 kpc). Using the spatial and temporal information from the
stellar populations in DDO 165, we compare the patterns of star formation over
the past 500 Myr with the HI dynamics. We extract localized star formation
histories within 6 of the 8 HI holes identified in Paper I, as well as 23 other
regions that sample a range of stellar densities and neutral gas properties.
From population synthesis modeling, we derive the energy outputs (from stellar
winds and supernovae) of the stellar populations within these regions over the
last 100 Myr, and compare with refined estimates of the energies required to
create the HI holes. In all cases, we find that "feedback" is energetically
capable of creating the observed structures in the ISM. Numerous regions with
significant energy inputs from feedback lack coherent HI structures but show
prominent localized high velocity gas features; this feedback signature is a
natural product of temporally and spatially distributed star formation. In DDO
165, the extended period of heightened star formation activity (lasting more
than 1 Gyr) is energetically capable of creating the observed holes and high
velocity gas features in the neutral ISM.Comment: The Astrophysical Journal, in press. Full-resolution version
available on request from the first autho
Recommendations for meeting the mobility needs of older adults in rural Michigan
The populations of the United States (US) and Michigan are aging. This demographic trend will continue to have a significant impact on society for the next few decades, particularly in the area of safe mobility in rural areas. As the population of Michiganâs rural older adults continues to grow, it is becoming increasingly crucial that the Michigan Department of Transportation (MDOT) understand the mobility needs and issues of rural older adults, including the issues faced by Indian Tribes in rural Michigan, and be proactive in addressing these needs and issues in their activities. This project provides the background and suggestions to help MDOT identify areas where they significantly impact the safe mobility of Michiganâs rural older adults. The overall goal of the project is to help maintain the safety and well-being of Michiganâs rural older adult residents by providing recommendations on how current alternative transportation services could be improved to be more attractive to older adults while addressing cultural and psychological barriers to using these services. This goal was achieved through a literature review, an analysis of demographic data, a statewide survey of older adults living in six rural counties of Michigan, structured interviews with public and community transportation providers, and group discussions with representatives of three Indian Tribes located in rural Michigan. The complete results of these research activities, a list of recommendations for improving rural older adult mobility in Michigan, and an implementation plan are included in this report.Michigan Department of Transportationhttp://deepblue.lib.umich.edu/bitstream/2027.42/95709/1/102924.pd
Healthy Annapolis
Final project for Urban Studies and Planning Studio (Summer 2017). University of Maryland, College Park.Annapolis, Maryland, located in Anne Arundel County, is home to the United States Naval Academy and Saint Johnâs College. The small waterfront capital city is also a popular tourist destination for sailors and history buffs drawn to the nationally recognized historic district. While continuing to focus on preserving the Cityâs historic and natural resources and strong local economy, Annapolis is taking steps to become a healthier city by participating in the Letâs Move! Cities Towns, and Counties (LMCTC) initiative, a national campaign to end childhood obesity by providing guidance to elected officials, parents, schools, community leaders, and other stakeholders in order to make healthy living accessible for everyone. Annapolis has successfully met the five initial program goals for LMCTC, and has achieved All-Star status. This report will help the City pursue three of the four All-Star strategies it is now eligible to pursue after achieving All-Star status. This report highlights disadvantaged communities, as they are more likely to suffer from poor health. In addition to an increased likelihood of health issues, these communities are also less likely to have resources such as education and community support to improve certain aspects of their health. This University of Maryland PALS summer studio project is meant to help guide the City of Annapolis in creating a healthier city for all residents, and in reaching their LMCTC All-Star strategies. Four chapters were written by groups that focused on health-related aspects of the city that relate directly to areas of focus for achieving All-Star status: 1) updates to incorporate health into the Comprehensive Plan, 2) parks and open space, 3) bicycle infrastructure, and 4) urban agriculture and community gardens. We hope that by providing recommendations for integrating health into the planning process and city design, and by suggesting strategies to make the most effective use of existing tools, Annapolis will be better situated to achieve its LMCTC All-Star strategies.The City of Annapoli
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