Geographic Information Sciences Commons^™

Healthy Eating And Active Living In North Portland: Asset Mapping With G.I.S., Arthur Aldridge, Susan M. Anderson, Mike Aspros, Lisa Barnes, Matt Bergstrom, Ambra Bingham, Ernest Bork, Sara Cottam, Jeremy Crawford, Shawna Graber, Jonathan Jubera, Patrick Louisel, Rebecca Symonds, Eric Wright

Asset Mapping: Community Geography Project

Making community development as democratic as possible has long been a challenge for urban planners and municipalities alike. A number of obstacles stand in the way of greater community participation in the planning process and consequently communities who are best served by their design. Visual Preference Surveys (VPS) are a tool planners can use to increase participation in the design process within the communities they serve. This can result in community plans that more accurately reflect the wants or needs of its members. Relying heavily on image driven content, VPS offers communities a straightforward methodology that asks participants to rate …

An Assessment Of The Impacts Of Climate Change On The Upper Clackamas River Basin With A Distributed Hydrologic Model, David Graves

Dissertations and Theses

The Pacific Northwest is dependent on seasonal snowmelt for water resources that support a significant portion of its economy. Increased temperatures resulting from higher concentrations of atmospheric greenhouse gases may cause disruptions to these resources because of reductions in the annual snowpack and variations of the timing of snowmelt. This study reconstructs and applies a GIS-based distributed hydrologic model at a monthly scale to assess the effects of future climate change on runoff from the Upper Clackamas River Basin (located near Portland, Oregon). Historic flow data and snow measurements are used to calibrate and test the performance of the hydro …

Visualizing Complexity : A Spatial Analysis Of Decorative Geometric Pattern In The Islamic World, 900-1400 Ad, Tracy Elizabeth Harrison

Dissertations and Theses

This study explores how the use of complex decorative geometric patterns in Islamic architecture spatially relates to advances in the fields of science and philosophy in the Islamic world between the ninth and fourteenth centuries. This project examines hypotheses developed by vario~s scholars on the forces that shaped the use of these patterns (known as the geometric mode) in Islamic architecture. The prevailing assumption that advances in mathematics contributed to the use of the geometric mode is used as a starting point for subsequent analysis.

For this study, two spatial databases were created. One contains over two hundred and twenty …

Methods For Correcting Topographically Induced Radiometric Distortion On Landsat Thematic Mapper Images For Land Cover Classification, David Michael Rosen

Geography Masters Research Papers

Satellite imagery is commonly used to study land-use, land-cover change in mountainous areas. Classification of land-cover types is particularly difficult in this type of terrain because topography affects the spectral response of surface features. Several techniques have been developed to help compensate for this topographic effect and to increase classification accuracy.

The purpose of this study is to compare topographic correction methods to determine which produces the most accurate results. Method 1 does not use any topographic correction, serving as a control. Method 2 is based on the Lambertian model, and uses topographical data as variables in an equation. Method …

Building And Maintaining A Statewide Transportation Framework, Kenneth Dueker, Paul Bender

Center for Urban Studies Publications and Reports

Creating and maintaining up-to-date sharable Geographic Information SystemsTransportation (GIS-T) data is challenging. Many states are working on Transportation Framework efforts to build a complete, consistent, and current transportation data layer in conjunction with the NSDI and Geospatial One-Stop efforts. This paper summarizes an effort that systematically re-examined transportation data sharing issues as part of the development of a Transportation Framework for the State of Washington. Business needs were assessed in terms of spatial and temporal accuracy needs of stakeholders and users of a state-wide Transportation Framework. A conceptual model was developed for a Transportation Framework with emphasis on data flows …

Gis Enhancements Using Gps Technology, Marc R. Beckel

Dissertations and Theses

Global Positioning System (GPS) technology is a viable tool for the collection and creation of Geographic Information System (GIS) databases. Organizations have turned their attention to using this tool to develop new databases for their existing GIS. The integration of these new GPS derived databases with older existing databases leads to both technical and organizational repercussions. With the integration of GPS derived data, an organization's existing GIS requires enhancements to GIS databases and the organization must be prepared to manage the integration.

This thesis examines the technical issues that occur due to integration and conflation of GPS data in an …

Spatial Modeling In Emergency Medical Systems: Analysis Of A Regional Trauma System With Two Centers, Christopher A. Bangs

Dissertations and Theses

The allocation of trauma patients to one of two trauma centers based on multiple criteria presents significant challenges in modeling network-based solutions for Emergency Medical Services (EMS). Capabilities in a desktop Geographic Information Systems (GIS) include spatial analysis and map visualizations that contribute to improved understanding of EMS and the trauma allocation. Using a common desktop GIS application and a statistical analysis application, key spatial and temporal characteristics of both penetrating and blunt trauma are described, and the EMS allocation system is analyzed.

As a sub-group of all emergencies, trauma-system patients represent the most severely injured. Understanding the spatial-temporal distributions …

Gis Address-Matching And Transportation Analysis, James D. Orrell

Dissertations and Theses

Geographic Information System (GIS) address-matching combined with other GIS processing offers new analytical opportunities in the area of transportation planning and analysis. Address-matching, an automated method for generating geographically-referenced (geocoded) point locations on a map from common tabular databases, can facilitate transportation analysis by providing a planning tool based on individual rather than aggregated spatial distributions more common to transportation issues.

This thesis presents a case study in which GIS address-matching was I applied to a transportation problem at Oregon Health Sciences University (OHSU) in Portland, Oregon. The transportation problem at OHSU is common to major employment centers in urban …

Geographic Information Systems: Research Issues, Kenneth Dueker

Center for Urban Studies Publications and Reports

GIS research has evolved by trial and error. We need to think more systematically about GIS research. New technology and societal needs are important determinants of issues that govern GIS research strategies. URISA has a stake in fostering GIS research, particularly research that is appliications driven.

Holocene Fluctuations Of The Coe Glacier, Mount Hood, Oregon, Karl Douglas Lillquist

Dissertations and Theses

Numerous moraines front the Coe Glacier on the north side of Mount Hood, Oregon. These moraines were identified and dated using a multiple methodology approach in order to establish a chronology for the advances and stillstands of the Coe Glacier. This chronology was compared to chronologies established for other glaciers on Mount Hood, North Sister, Mount Rainier and Mount Baker as well as glaciers in Scandinavia. The chronology was also compared to a long term temperature record from Longmire, Washington.

The maximum identified extent of the pre-Little Ice Age Coe Glacier was indicated by moraines located at an elevation of …

Modeling Cadastral Spatial Relationships Using An Object-Oriented Information Structure, Daniel Kjerne

Dissertations and Theses

This thesis identifies a problem in the current practice for storage of locational data of entities in the cadastral layer of a land information system (LIS), and presents as a solution an information model that uses an object-oriented paradigm.

A User's Manual For: A Clear Sky Solar Radiation Generator For The Personal Computer, Keith R. Mountain, Richard Lycan

Occasional Papers in Geography

Occasional Papers in Geography Publication No. 3

This program is primarily designed as an interactive instructional aid for students concerned with select aspects of shortwave radiation climatology. On the basis of user supplied temporal and geographic information the algorithm will produce instantaneous values of diffuse, direct, global, reflected, net shortwave and extraterrestrial radiation. Daily totals are also generated by numerical approximation of the area under the curve as described by each of these quantities. In addition, an optional routine to compute the instantaneous values of solar elevations and azimuths is included to further define the nature of astronomical relationships for …

Modeling Location For Cadastral Maps Using An Object-Oriented Computer Language, Daniel Kjerne

Center for Urban Studies Publications and Reports

The challenge to designers of multipurpose computer-aided land information systems is to capture enough of the "deep structure" of the problem domain to enable a system to answer user questions and requests in a satisfactory way. Criteria defining "satisfactory" in each case must include considerations of accuracy, completeness, timeliness, and cost. These considerations, when applied to the location in space of parcel boundaries and property corners, present unusual difficulties. This is in large measure due to the fact that important elements of the field measurement process, and the determination of location based on what are essentially logical {legal) abstractions, are …

Report On Feasibility Of A Geographic Information System For The Central City Citizen Planning Committees, Kenneth Dueker, George Mason

Center for Urban Studies Publications and Reports

In September 1984 PSU was contracted to demonstrate the utility of an interactive graphic database system. A project was done using LANDTRAK* to determine which records from the tax roll were inside the Central City Planning Area. This information provides a starting point for o parcel based information system for the Central City Planning Project. This report consists of a design for a geographic information system for the Central City Planning Area that may serve as a prototype for a broader geographic information system for the City.