Thesis (Ph. D.)--University of California, Los Angeles, 1994. / Vita. Includes bibliographical references (leaves 224-233).

No description available.

The Caribbean and Central America region (CCAR) undergoes the entire spectrum of earthquake types due to its complex tectonic setting comprised of transform zones, young oceanic spreading ridges, and subduction along its eastern and western boundaries. CCAR is, therefore, an ideal setting in which to study the impacts of long-term tectonic deformation on the distribution of present-day seismic activity. In this work, we develop a revised continuous tectonic strain rate model based on interseismic, secular geodetic data. We compare it with its predecessor, the Global Strain Rate Model v2.1 (GSRM). Specifically, we compare predicted fault types with known active faults and evaluate the style of predicted fault types with present-day earthquake focal mechanism data. We first create a 0.25$^{circ}$ x 0.25$^{circ}$ finite element grid that is comprised of block geometries defined from previous studies. Second, we isolate and remove anomalous signals that are inconsistent with rigid block motion from the latest open access community Global Navigation Satellite System (GNSS) velocity solution from UNAVCO and combine it with GNSS data compiled for the GSRM. In a third step, we delineate zones of deformation and rigidity by creating a buffer around the boundary of each block that varies depending on the size of the block and the expected deformation zone, which are based on locations of GNSS data consistent with rigid block motion. Fourth, we assign the regions within the buffer of zero for the deforming areas and a plate index outside the buffer to constrain plate rigidity. Finally, we calculate a tectonic strain rate and continuous velocity model for CCAR using the Haines and Holt finite element approach to fit bicubic Bessel splines to the GNSS data assuming block rotation for zones of rigidity. Our model of the CCAR is consistent with compression along subduction zones, extension across the East Pacific Rise, and a combination of compression and extension across the North America - Caribbean plate boundary with a few exceptions due to limitations with the modeling approach. Modeling results are then used to calculate expected faulting behaviors that we compare with seismic activity, the GSRM, and mapped geologic faults. We find the accumulation of strain rates in areas near the Middle American Trench, Hispaniola, the northeastern Caribbean, and northern South America indicate tectonic deformation that may result in seismic events. We conclude the tectonic deformation plays a critical role in explaining present-day seismicity along land masses adjacent to the subduction zone and the Hispaniola block. / Master of Science / Central America and the Caribbean are areas with high occurrences of earthquakes. This is due to the various types of tectonic plate boundaries that occur in the region. When plates move in relation to each other, they can accumulate strain, which plays a role in the size and type of earthquakes that occur. In this work, we aim to determine the effects on strain on earthquakes. To do this, we utilize an inversion method to calculate strain rates from Global Navigation Satellite System (GNSS) data. In our model, we first create a grid of points and a geometry of the regional tectonic blocks. We then gather data from public and published sources. The model also requires that we define where the plates are allowed to deform (accumulate strain) and where they remain rigid. Using the Haines and Holt method, we invert the GNSS velocities for strain rates and velocities. We find long-term tectonic deformation dominates the present-day seismic activity in three key regions: along the Middle America Trench and across the Hispaniola block.

The research purpose was to determine strengths and weaknesses of Appalachian wood products sales in Central America. In the future, there may be a greater need for international forest products in Central America due to increasing population size, tourism, and deforestation. Potential market opportunities for Appalachian forest product companies in Central America were evaluated and strategies were developed to increase exports from Appalachian wood product companies. Interviews of Central American wood products wholesalers and government and non-government officials were conducted to determine the current situation of the forest, the demand for local wood production, and potential for future production of wood products. A survey of wood products retailers and manufacturers was conducted to determine drivers and barriers of the sale of Appalachian wood products in Central America. Models were developed to describe relationships between company performance and suppliers and a series of independent variables (e.g, supplier promotion, product attributes). Results suggested that U.S. wood products companies have not put enough effort into marketing forest products in Central America. Central American wood products consumers lack knowledge of Appalachian wood products and their advantages over wood products currently used. Inconsistencies between Appalachian and Central American wood products industries (e.g., dimensions, species terminology) act as a barrier to efficient exchange of wood products. Models suggest that companies may need to focus on barriers to increase company performance. The best market strategies for Appalachian forest products companies to increase sales into Central America are: partner with local wholesalers, offer higher value-added products, maintain similar pricing with competition, and offer sales and product discounts. / Master of Science

Call number: LD2668 .T4 1979 W335 / Master of Landscape Architecture

No description available.

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Vita. Includes bibliographical references.

Part of Thesis--Pontificia Universitas S. Thomae, Rome. / Includes bibliographical references (p. vi-xxiv).

The five countries that lie on the isthmus connecting North and South America have endured a past of colonialism, civil war, and natural disaster. As these countries evolve in the 21st century, growing economies and political peace provide a promising outlook for the citizens of these nations. The media industries in these nations have varying levels of development which are explored in this thesis. Using Michael Porter's 1990 framework and a case study methodology, this thesis explores the differences and similarities of media industries in Guatemala, El Salvador, Honduras, Nicaragua and Costa Rica, and what may be done to ensure future success in an increasingly global world.

The thesis is an ethnographic account of the belief system surrounding disease and curing among the Kuna Indians of San Blas, Panama. It is an attempt to describe this system in its own terms, and to interpret its meaning by attending to the various symbolic, ritual, and social contexts in which it finds expression. Above all, the ethnography strives to understand Kuna theories of disease causation and cure. Theoretical assumptions and methodological suggestions have been borrowed from the anthropological sub-fields of ethnoscience, symbolic anthropology, and sociolinguistics. The ethnography is loosely organized around the natural progression taken by the Kuna when they discover that someone has fallen ill, diagnose his illness, and then set about devising strategies for restoring him to health. Earlier chapters scrutinize the component parts of this belief system, and these are brought together in a synthetic manner in the penultimate chapter. The ultimate theoretical objective is to demonstrate that cultural symbols can only be properly understood when viewed within the natural context in which they are used. The final chapter deals with cultural and social change in San Blas, with special emphasis on the island of Ustuppu, over the past 70 years.