Global ETD Search

31	A comparison of geocoding baselayers for electronic medical record data analysis Severns, Christopher Ray 16 January 2014 (has links) Indiana University-Purdue University Indianapolis (IUPUI) / Identifying spatial and temporal patterns of disease occurrence by mapping the residential locations of affected people can provide information that informs response by public health practitioners and improves understanding in epidemiological research. A common method of locating patients at the individual level is geocoding residential addresses stored in electronic medical records (EMRs) using address matching procedures in a geographic information system (GIS). While the process of geocoding is becoming more common in public health studies, few researchers take the time to examine the effects of using different address databases on match rate and positional accuracy of the geocoded results. This research examined and compared accuracy and match rate resulting from four commonly-used geocoding databases applied to sample of 59,341 subjects residing in and around Marion County/ Indianapolis, IN. The results are intended to inform researchers on the benefits and downsides to their selection of a database to geocode patient addresses in EMRs. GIS Geocode Geodatabases -- Research Spatial analysis (Statistics) Digital mapping -- Software Indiana Network for Patient Care
32	Internal Cycling in an Urban Drinking Water Reservoir Raftis, Robyn R. 12 October 2007 (has links) Indiana University-Purdue University Indianapolis (IUPUI) / The focus of this study was to document phosphorus (P) and metal cycling in the Eagle Creek Reservoir (ECR), located in Indianapolis, central Indiana. Eagle Creek Reservoir serves the drinking water needs of over 80,000 residents. Within the last several years, algal blooms have created stress to the local treatment facility. The objective of this study was to examine how P cycling from oxygen deprived bottom sediments affects the algal bloom productivity. As such, cores were retrieved from different water depths (7 and 16 m) from portions of the reservoir where high surficial concentrations of organic matter and P were found to occur. The dried samples were analyzed for P, sulfur, iron, barium, cadmium, copper, lead, and zinc, using a strong acid digestion technique. The samples were also analyzed for iron-bound P (Fe-P), authigenic P (A-P), detrital P (D-P), organic P (O-P), reducible iron, and reducible manganese, using a sequential extraction technique. The results from the study showed moisture contents ranged from 16 to 76% and organic matter contents ranged from 2 to 12 wt%. The dry bulk densities were determined to be between 0.27 and 1.68 g cm3. The average percentages of P in ECS-1, as determined by the sequential extraction method, were as follows: Fe-P, 66.2%; A-P, 8.1%; D-P, 4.8%; and O-P, 20.9%. The average percentages of P in ECS-3, as determined by the sequential extraction method, were as follows: Fe-P, 77.0%; A-P, 6.5%; D-P, 2.8%; and O-P, 16.7%. To determine relationships between elements, correlations were calculated. When looking as the relationships between the P fractions and reducible Fe, differences were observed between the different water depths. There was less correlation between reducible Fe and Fe-P, and between O-P and Fe-P, in ECS-3, indicating that Fe-P is more efficiently dissolved and recycled in the deep portion of ECR. The study shows that the Fe-P flux, caused by the iron redox cycle, is persistent and will continue to influence algal bloom productivity in the deeper portions of ECR. Metals Cycling Phosphorus Cycling Eutrophication Trace elements in water -- Indiana Biogeochemical cycles -- Indiana Eutrophication -- Indiana
33	THE INFLUENCE OF SEASON, FLOW REGIME, AND WATERSHED LAND USE AND LAND COVER ON NUTRIENT DELIVERY TO TWO RAPIDLY URBANIZING WATERSHEDS IN CENTRAL INDIANA, USA Casey, Leda René 20 March 2007 (has links) Indiana University-Purdue University Indianapolis (IUPUI) / This study explores relationships between temperate stream geochemistry and watershed land cover in two temperate streams, Fishback Creek and School Branch Creek, located in a rapidly urbanizing area on the northwest side of Indianapolis in Eagle Creek Watershed, Indiana. The temporal and spatial patterns of NO3-N, PO4, DOC, SiO2, Cl-, and Na+ were assessed to understand the influence of land cover on the magnitude and timing of water, chemical, and nutrient delivery to streams. Results of the study indicate that the influences of different land cover types on water delivery to streams and in-stream water quality vary seasonally and with respect to flow regime, that urbanization may result in decreased nitrate input, and that phosphate and dissolved organic carbon concentrations will likely remain constant as the watershed is developed. Results also indicate that riparian buffer downstream of intense agriculture lands dilutes high agricultural NO3-N concentrations, but not enough to return in-stream concentrations to natural levels. watershed land use land cover nutrient seasonal variation flow regime Geochemistry -- Indiana -- Indianapolis Watersheds -- Indiana -- Indianapolis Land use -- Indiana -- Indianapolis
34	User Modeling and Optimization for Environmental Planning System Design Singh, Vidya Bhushan January 2014 (has links) Indiana University-Purdue University Indianapolis (IUPUI) / Environmental planning is very cumbersome work for environmentalists, government agencies like USDA and NRCS, and farmers. There are a number of conflicts and issues involved in such a decision making process. This research is based on the work to provide a common platform for environmental planning called WRESTORE (Watershed Restoration using Spatio-Temporal Optimization of Resources). We have designed a system that can be used to provide the best management practices for environmental planning. A distributed system was designed to combine high performance computing power of clusters/supercomputers in running various environmental model simulations. The system is designed to be a multi-user system just like a multi-user operating system. A number of stakeholders can log-on and run environmental model simulations simultaneously, seamlessly collaborate, and make collective judgments by visualizing their landscapes. In the research, we identified challenges in running such a system and proposed various solutions. One challenge was the lack of fast optimization algorithm. In our research, several algorithms are utilized such as Genetic Algorithm (GA) and Learning Automaton (LA). However, the criticism is that LA has a slow rate of convergence and that both LA and GA have the problem of getting stuck in local optima. We tried to solve the multi-objective problems using LA in batch mode to make the learning faster and accurate. The problems where the evaluation of the fitness functions for optimization is a bottleneck, like running environmental model simulation, evaluation of a number of such models in parallel can give considerable speed-up. In the multi-objective LA, different weight pair solutions were evaluated independently. We created their parallel versions to make them practically faster in computation. Additionally, we extended the parallelism concept with the batch mode learning. Another challenge we faced was in User Modeling. There are a number of User Modeling techniques available. Selection of the best user modeling technique is a hard problem. In this research, we modeled user's preferences and search criteria using an ANN (Artificial Neural Network). Training an ANN with limited data is not always feasible. There are many situations where a simple modeling technique works better if the learning data set is small. We formulated ways to fine tune the ANN in case of limited data and also introduced the concept of Deep Learning in User Modeling for environmental planning system. User Modeling Environmental Planning Genetic Algorithm Neural Network Watershed Interactive Optimization Watershed restoration -- Research Mathematical optimization -- Research High performance computing -- Research Information modeling User interfaces (Computer systems) Spatial analysis (Statistics) Sustainable development Machine learning -- Research System analysis
35	The Spatial Relationship Between Septic System Failure and Environmental Factors in Washington Township, Marion County, Indiana Hanson, Brian L. 04 1900 (has links) Indiana University-Purdue University Indianapolis (IUPUI) / Underground septic systems thrive or fail based on the relationship with their local environment. This paper explores ways environmental variables such as soil type, tree roots, degree of slope, and impervious surfaces affect on-site wastewater treatment systems. It also discusses the effects each of these variables may have on a septic system, and the resulting impact a compromised system may have on the surrounding environment. This research focuses on an approximately 20 square mile area of central Washington Township in Marion County, Indiana. This area of central Indiana contains a large septic system owning population in a sampling of different environments such as wooded areas, hilly areas, and a variety of different soil types. septic system septic failure soil type tree roots slope degree of slope impervious surfaces environment environmental variables environmental factors on-site wastewater treatment system Washington Township Marion County Broad Ripple LiDAR Tree Canopy soil processed soil Miami Crosby Brookston Genesee Hennepin flood plain outwash glacial till parcel property parcel septic tank effluent drain field biomat percolation drainage water table sewage run-off pollution nutrient pollution nitrogen phosphorus body of water home owner
36	Playing, learning, and using music in early Middle Indiana Peterson, Erik C. January 2013 (has links) Indiana University-Purdue University Indianapolis (IUPUI) / This thesis is a study of how people in the nine counties of central Indiana learned, appreciated, and performed music from 1800 to 1840. A concluding proposal for a public history application of this research is included. music in Indiana 1800-1840 Conner Prairie (Museum) Indiana Historical Society
37	Leaving the bridge, passing the shelters : understanding homeless activism through the utilization of spaces within the Central Public Library and the IUPUI Library in Indianapolis Karim January 2014 (has links) Indiana University-Purdue University Indianapolis (IUPUI) / By definition, homelessness refers to general understanding of people without a home or a roof over their heads. As consequences of a number of factors, homelessness has become a serious problem especially in cities throughout the United States. Homeless people are usually most visible on the streets and in settings like shelters due to the fact that their presences and activities in public spaces are considered illegal or at least “unwanted” by city officials and by members of the public. In response to this issue, activists throughout the country have worked tiresly on behalf of homeless people to demand policy changes, an effort that resulted in the passage of the homeless bill of rights in three states, namely Connecticut, Rhode Island, and Illinois. As I discovered through my fieldwork, in Indiana, the homeless, themselves, are currently lobbying for passage of a similar measure. Locating my fieldwork on homelessness in Indianapolis in two sites, the Indianapolis Marion County Public Library (the Central Library) and the IUPUI Library, I examine the use of library buildings as alternative temporary shelters and spaces where the homeless can organize for political change. As an Indonesian ethnographer, I utilized an ethnographic approach, which helped me to reveal “Western values” and “American culture” as they play out in the context of homelessness. In this thesis, I show that there is a multi-sited configuration made up of issues, agents, institutions, and policy processes that converge in the context of the use of library buildings by the homeless. Finally, I conclude that public libraries and university libraries as well can play a more important role beyond their original functions by undertaking tangible actions, efforts, engagements, and interventions to act as allies to the homeless, who are among their most steadfast constituencies. By utilizing public university library facilities, the homeless are also finding their voices to call for justice, for better treatment, and for policies that can help ameliorate the hardship and disadvantages of homelessness. Homelessness -- United States Social values -- United States Political culture -- United States

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