Digital Commons Network^™

Assessment Of Peregrine Falcon (Falco Peregrinus Anatum) Nesting Habitat In The San Francisco Bay Area, Prabha Venu

Master's Theses

Human encroachment into natural environments fragments and degrades the habitat for many species and raptors such as the peregrine falcon (Falco peregrinus) have adapted to the urban environment, co-existing with humans and other wildlife. The habitat preference of the American peregrine falcon subpopulation, F. p. anatum was investigated in the densely urbanized San Francisco Bay Area. In this research, Geographic Information Systems (GIS) applications to evaluate ten environmental attributes and their influence on 47 nesting sites were used. Distances from peregrine falcon nesting sites to two federally listed prey species the California least tern (Sterna antillarum browni) and the western …

Pretty Maps: Evaluating Gis Adoption Of Cartographic Design Standards And Best Practices In Professional Publications, David Medeiros

Master's Theses

The nature of GIS maps, as tools designed for visual communication, puts them in the realm of art that is in many ways unique among scientific tools. As a visual form of communication, maps are responsive to methods of visual design, affecting the map’s appeal and function. Through cartography, a well established body of standards and best-practices exists to help GIS users avoid common design errors and create effective and meaningful maps that support their work. This research examines the adoption rate of those standards amongst professionals using GIS software for creating maps for journal publications. A selection of 80 …

Women Business Leaders In Biotech And Hi-Tech, And Related Industry Cluster Factors, Jessica White

Master's Theses

Women entrepreneurs are on the rise and their numbers have grown at one and a half times the rate of small enterprises generally over the last 15 years. In spite of this, women are underrepresented in the fields of science, technology, engineering, and mathematics (STEM). Women face additional barriers when forging careers within these fields and obtaining startup capital. This study examines female business ownership within the fields of hi-tech and biotech, and the factors that support startups by women throughout the state of California. As both of these industry sectors are known to cluster geographically around sources of venture …

Seasonal Road Layout Design In Mountainous Terrain Using Gis With The Side Hill And Least Cost Path Methods, Emil Harold Brundage

Master's Theses

Seasonal road design in mountainous terrain consists of four main phases: route selection, field investigation, surveying, and analysis. The first phase, route selection, consists of two parts: selecting control points at strategic locations, and then determining potential routes between those points. Two geographic information system (GIS) geoprocessing automations were developed to aid a road planner in determining routes between control points. Both automations utilized Environmental Systems Research Institute’s (ESRI) ArcGIS software package. The first method developed was the least cost path method, which makes use of ArcGIS’s cost path tool to find a route between points following a gradual slope. …

Tales Of Archaeological Places: Visualizing Mayan Pre-Colonial Settlement Patterns, Angela Ivanov

Master's Theses

In order to visualize ancient Mayan settlement patterns and demography through time, data derived from 26 published archaeological sites were collected and plotted onto three discrete map media. These data were subdivided into six time periods ranging from Pre-Classic to Post-Classic, and were simulated for each map medium. Specific attention was given during the selection of geographical locations, natural landscape features, map annotation, layers and coordinates. Tabulated information were site names, coordinates, site founding dates, site decline/abandonment dates, and estimated population. Combined with existing country base map layers downloaded from online geographical sources and time series animation (an animated map), …

Utilization Of Crowdsourced Maps In Catastrophic Disasters, Makiko Hong

Master's Theses

Crowdsourced data, the collective messages from citizens through social media like Twitter® or Facebook®, have been increasingly recognized as a vital information source in a catastrophic disaster. Because there is often insufficient emergency personnel to gather situational information during a big disaster, the crowdsourced data can offer a supplemental means for data collection or dissemination immediately after the disaster. In addition, crowdsourced maps can empower citizens with their involvement.

In the Haiti earthquake of 2010, crowdsourced data was first used to create a web map application to aid the humanitarian effort. With some success in Haiti, these crowdsourced maps have …

Transient Hillslope Response To An Incision Wave Sweeping Up A Watershed: A Case Study From The Salmon River, Ryan Wood

Master's Theses

Base level lowering often leads to the migration of knickpoints up the fluvial network as the channel profile adjusts to the new lower boundary condition. In steep terrain, the passage of a knickpoint can oversteepen valley walls and trigger a wave of erosion up the hillslopes. As soil is stripped from hillslopes, the previously diffusive hillslopes are transformed to landslide-dominated. Soils in diffusive landscapes are well developed until erosion exposes the underlying saprolite by shortening the soil residence times. During base level adjustments, the erosion of hillslopes can leave relict patches of the original landscape juxtaposed with the newly evolving …

Geography And Social Structure Of Monasteries: Cultural Diffusion Or Convergent Evolution?, Constance Powell Chin

Master's Theses

At both ends of the Eurasian continent, cenobitic monasticism took root and flourished in the fourth century. This parallel development at roughly the same time in regions so different and distant from each other as Egypt and China lends itself to an interesting comparison and a large question. Is this a case of cultural diffusion, a borrowing of ideas and attitudes and perhaps even monastic rules and practices from India, which lies midway between the two? Is it instead a case of convergent evolution?

Monastic rules and behaviors, the archaeology of monasteries, and the functions of early monasteries are explored …

A Comparison Of Two Versions Of Modified Mercalli Intensity For Earthquake Exposure Assessment, Jamie Lynne Ratliff

Master's Theses

The U.S. Geological Survey conducted an earthquake exposure assessment for the State of Washington using peak ground acceleration (PGA) shaking from the USGS ShakeMap Project grouped to approximate Modified Mercalli Intensity (MMI) classes. Since ShakeMap datasets also have data representing official MMI classes, a companion exposure assessment was performed to determine whether MMI-grouped PGA data and official MMI data are interchangeable. Along with the exposure assessment, a spatial sampling process was used to further check how MMI-grouped PGA and official MMI data compared. Results indicated that significant variations existed spatially between the two ShakeMap datasets; generalizations by ShakeMap in creating …

Modeling Wildfire Hazard In The Western Hindu Kush-Himalayas, David Bylow

Master's Theses

Wildfire regimes are a leading driver of global environmental change affecting diverse ecosystems across the planet. The objectives of this study was to model regional wildfire potential and identify environmental, topological, and sociological factors that contribute to the ignition of regional wildfire events in the Western Hindu Kush-Himalayas. The environmental, topological, and sociological factors were used to model regional wildfire potential through multi-criteria evaluation using a method of weighted linear combination. Moderate Resolution Imaging Spectroradiometer (MODIS) and geographic information systems (GIS) data were integrated to identify regional wildfire factors. Point pattern and inferential statistical analysis were used to analyze regional …

Analyzing The Impact Of County Radon Levels And Population Size On The Allocation Of The State Indoor Radon Grant (Sirg) Funds, Stephen Douglas De Jong

Master's Theses

This thesis examines the SIRG program's effectiveness to target funds to states with the highest risk potential, based on county radon levels and population size. The primary method of determining the program's effectiveness was an analysis of the program's allocation of funds at a regional as well as a state level. The analysis focused on two of four input variables that the EPA utilizes in its regional allocation model (e.g., county radon levels and population size).

The analysis showed that the state-level allocation of funds is only marginally related to a combination of county radon levels and population size, while …