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Essays on health insurance for immigrants in the United States: An examination of federal and state policies
No full textThe working–age, adult immigrant population living in the United States is often left out of health policy initiatives and consequentially is more likely to be uninsured. In my dissertation, I provide an analysis of why immigrants are more likely to be uninsured as well as an analysis of what factors make them likely to be covered by Medicaid or private health insurance. In the first essay, I estimate the effects of state generosity on the likelihood of an immigrant being uninsured, having Medicaid, employer–sponsored insurance (ESI) or other private health insurance (OPHI). I explore the determinants of lacking health insurance and the probability of having Medicaid, ESI or OPHI using a multinomial probit model, focusing on the variable of interest indicating whether or not a state is generous in accepting eligible, recent immigrants who have lived in the U.S. for fewer than 5 years into the Medicaid program. In the second essay, I research the effect of residency restrictions on immigrants' health insurance coverage rates through the use of a regression discontinuity design. The Personal Responsibility and Work Opportunity Reconciliation Act (PRWORA) passed in 1996 requires eligible immigrants to live in the U.S. for five years before they can qualify for Medicaid. My research analyzes the effects of this federal policy on Medicaid rates and explores how PRWORA continues to impact immigrants and their health insurance coverage options. In the final essay, I use a difference–in–differences (DID) approach to examine how simplifying the Medicaid application/renewal process affects health insurance coverage rates for both natives and immigrants. In recent years, some states have chosen to modify the Medicaid application and/or renewal process in order to make the process easier and break down one of the many barriers to obtain Medicaid benefits. My research evaluates whether simplification policies affect potentially eligible immigrants and natives differently and analyzes the effect of these simplifications on Medicaid coverage rates and rates of ESI, OPHI and uninsurance
A Quantitative Quality Control Model for Parallel and Distributed Crowdsourcing Tasks
No full textCrowdsourcing is an emerging research area that has experienced rapid growth in the past few years. Although crowdsourcing has demonstrated its potential in numerous domains, several key challenges continue to hinder its application. One of the major challenges is quality control. How can crowdsourcing requesters effectively control the quality from the crowdsourcing workers? To address that challenge, a data-driven empirical model of quality control for crowdsourcing was designed to automatically assess the quality of an individual's contribution to a task, without much manual intervention or external data support. This model is designed to categorize the data from each crowdsourcing worker into one of several quality groups. The model was initiated by estimating thresholds for different quality groups based on analyzing the two categories of quantitative training data from tasks (i.e., user effort measures and task natures). Then the model integrated the expected variance within individual workers to adjust the initial estimates. These computed thresholds are then used to judge the quality of each user contribution. Two studies under different task domains were conducted to evaluate the model. The results from both studies support the effectiveness of the model. A comparison study was conducted between our model and the iterative voting approach, a commonly used quality judging method in crowdsourcing. The comparison study results confirmed the advantages of our model over iterative voting. A blacklist-based enhancement was added to the original model inspired by the Gold Standard method, to defend against gaming under the assumption that gamers will always cheat and never provide valid data inputs. A Java implementation of the quality judging model was shared as an open source package to allow an easy adoption of the designed model. Regarding theoretical contributions, this dissertation proposed a three-stage (i.e., training, refinement, and classification) quality judging model to automatically determine data quality based on two categories of quantitative measures for crowdsourcing tasks. Practically, the crowdsourcing community can directly use or build upon this work to control crowdsourcing data quality more effectively
Hyperglycemic challenge and distribution of adipose tissue in obese baboons
No full textBlood glucose levels regulate the rate of insulin secretion, which is the body's mechanism for preventing excessive elevation in blood glucose. Impaired glucose metabolism and insulin resistance have been linked to excess body fat composition. The thesis focuses on the development of an imaging sequence and image analysis steps for performing body composition analysis based on 3D imaging of abdominal adipose tissue in a large nonhuman primate, baboon, and using segmentation approaches to calculate regional distribution of adipose tissue within the abdominal cavity. In addition, a data-driven analysis approach is used to correlate the total abdominal fat composition with serum glucose response to a hyperglycemic challenge. Five female baboons were fasted for 16 hours prior to 90 minute body imaging experiment that consisted of a 20-min baseline, followed by a bolus infusion of glucose(500mg/kg). The blood glucose was sampled at regular intervals. The total compositions of the muscle, visceral and subcutaneous adipose tissue were estimated in all five baboons. We found that adipose tissue composition is associated with the fluctuations in glucose responses as measured by IVGTT of a non-human primate. Mean (SD) values of body weight, and muscle, visceral, and subcutaneous adipose are 26.7 kg, 0.79 kg, 1.18 kg, and 1.39 kg, respectively. The glucose responses were positively correlated with body weight, visceral and muscle fat (p < 0.005). Polynomial regression analysis showed that body weight, visceral and muscle were significant predictors of serum glucose responses. (p < 0.001). These results indicate the similarity between humans and baboons with respect to glucose metabolism and strengthen the utility of baboon for biomedical research
Nora (2014)
No full textPromotional materials produced for Nora, performed by the UMBC Theatre Department in October 2014. Includes playbill, program, and 17 images.October 23-October 25, 201
Progress Machine
No full textAbby_Ritchey__Harford_Community_College___Student__Progress_Machine_February_21__2014_at_0129PMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe
Row Homes
No full textAlix_L.__Notre_Dame_of_Maryland_University__Student__Row_Homes_February_18__2014_at_0707PMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe
Seams
No full textAmber_Davis__Harford_Community_College__Seams_February_23__2014_at_0110AMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe
7Eleven Remix
No full textChris_Peregoy_UMBC_7Eleven_Remix_February_09__2014_at_0100PMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe
Entrance
No full textHenry_Aragoncillo__Santa_Fe__N.M.__Entrance_February_22__2014_at_1204PMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe
Free Swim
No full textHenry_Aragoncillo__Santa_Fe__N.M.__Free_Swim_February_22__2014_at_1131AMThese images were created as part of the Hughes Remix project, a collaborative endeavor developed by UMBC's Albin O. Kuhn Library Special Collections and the Department of Visual Art to foster creative engagement with archival holdings in conjunction with the 2014 Society for Photographic Education annual conference. UMBC's Special Collections offered a selection of images from the Hughes Company Glass Negatives (http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughes) collection for SPE members and conference attendees to remix, reinvent, reinterpret, and reimagine the images in this collection of Baltimore street scenes, promotional and advertising photographs, businesses, churches, schools, monuments, factories, machinery, and portraits. Images that were created were displayed during the conference as well as on a Tumblr site and are now archived in the Special Collections. Full details of the project can be found at: http://hughes-remix.tumblr.com/overview.The original Hughes Company Glass Negatives collection can be found at: http://contentdm.ad.umbc.edu/cdm/landingpage/collection/hughe