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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

The Pig and the Postwar Dream: The San Juan Island Dispute, 1853-1872, in History and Memory

Lyall, Gordon Robert 30 April 2013 (has links)
Historical events are framed by the actors of the time and then re-framed by subsequent historians and the public. This thesis examines the historiography of the San Juan Island Dispute, 1853-1871, known colloquially in the twentieth century as the “Pig War.” In 1859, after an American settler on San Juan shot a pig owned by the Hudson’s Bay Company, the American military and the British Royal Navy met in a tense stand-off resulting in a twelve year joint-military occupation of the island. This conflict was the last border dispute between the two nations. Following World War II, a message of peace became the dominant trope of histories written about the “Pig War.” The term itself has come to represent this overarching theme. With documents from the dispute, such as colonial despatches, official correspondence and newspaper editorials, this thesis considers how the event was framed at the time; and employing semiotics as a technique for discourse analysis, it examines how the “war” was re-framed in the twentieth century. The thesis follows Alfred Young’s research on antebellum America’s commemoration of the “Boston Tea Party,” with its message appropriated by politicians, merging history and myth. The “Pig War” occupies similar terrain as the reconceptualization of the event embodies its own message of a unique identity for the Pacific Northwest, associated with the 49th parallel as the world’s longest, most peaceful, “undefended” border. / Graduate / 2015-04-26 / 0578 / 0334 / 0337 / lyallg@uvic.ca
52

Prosodic and morphological factors in Squamish (Skwxwú7mesh) stress assignment

Dyck, Ruth Anne 10 August 2006 (has links)
This dissertation is an investigation of the stress system of Squamish (Skwxwú7mesh), one of ten languages that make up the Central division of the Northwest Coast branch of Salishan, a linguistic group indigenous to the Pacific Northwest region of North America. Although other researchers have previously investigated aspects of stress in the language, this work provides the first integrated account of the Squamish stress system as a whole, couched in an Optimality Theoretic framework. The first two chapters are introductory, with Chapter 1 supplying a contextual background for the undertaking within linguistics, and especially within Salishan linguistices, while Chapter 2 provides a thorough grounding in the phonology and phonemics of Squamish in particular. Chapter 3 begins the formal analysis of stress in Squamish by examining the way stress surfaces in free root morphemes,which tend to stress penultimate syllables whenever they contain either a full vowel or a schwa followed by a resonant consonant. Given this outcome, Chapter 4 continues the investigation of basic stress patterns by looking more closely at the interactive roles of schwa, sonority, weight and the structure of syllables and feet in Squamish stress assignment. With the basic stress pattern established, the remaining chapters look at the outcome of stress in morphologically complex Squamish words. Thus, Chapter 5 is an analysis of stress in words involving prefixation, especially those resulting from CVC and CV prefixal reduplication, since non-reduplicative prefixes are unstressable; and Chapters 6 and 7 investigate the occurrence of stress in polymorphemic words resulting from the addition of lexical suffixes and grammatical suffixes, respectively. While stress in roots is generally predictable on the basis of phonological factors alone, that in polymorphemic words may also be influenced by morphological factors, as when a root or suffix has underlying lexical accent, and such factors then take precedence ofer phonological factors. In addition, prosodic domains play an important and interactive work.
53

Contribution of post-critical reflections to ground motions from mega-thrust events in the Cascadia subduction zone

McNeill, Andrew Floyd 18 November 2009 (has links)
In this study the contribution of post-critical reflections at the oceanic Moho to ground motions from mega-thrust events in the Cascadia subduction zone is examined. The hypothesis to be tested is that the Moho post-critical reflection is a primary component of the S-wave-field at large epicentral distances from a subduction zone thrust earthquake. Pseudo 3-D modeling using P-SV pseudo-spectral synthetic seismograms and ray tracing amplitude calculations are employed. Double couple line sources are initiated within a structural model for the Cascadia subduction zone that incorporates an updated Juan de Fuca slab geometry. Areas in which the oceanic Moho post-critical reflection is a primary component of the seismic wave-field are defined as a function of landward extent of rupture for the next mega-thrust event. For rupture extending landward of the down-dip limit of the seismogenic zone, Moho post-critical reflections create a broad maximum in peak ground motions at locations that fall within the Pacific Northwest urban corridor [Portland, Seattle. Vancouver. Victoria]. At these locations, ground motions from sources with dominant frequencies between 1 Hz and 3 Hz can be a factor up to 1.5 greater than those modeled in the absence of the oceanic Moho post-critical reflection. A second maximum is associated with the presence of forearc mantle serpentinization, which affords a route for post-critical reflections at the oceanic Moho to escape upwards toward the Earth's surface rather than being trapped in the oceanic crust wave-guide. The forearc mantle wedge acts to concentrate seismic energy within a narrow region at locations, just landward of major population centers.
54

Immigrant Labor in Fish Processing in the Pacific Northwest and British Columbia and Current Undocumented Labor

Salinas Ferreira, Adi D 01 January 2015 (has links)
The beginning of industrialized fish processing plants reveals themes of labor exploitation, racial and gender segregation, and antagonistic legislation that have continued well into the present. Today in the Pacific North West, the majority of workers are Latino and many among them are undocumented or DACAmented. Many aspects of the work conditions in salmon canneries back in the late 1800’s to the mid 1900’s and the work conditions in present day fish processing plants have not changed. Many jobs in a fish processing plant remain gendered, and when there is more than one race working in a single plant racial tensions as well as differences in the owners expectations of labor output by race may arise. The study interviews undocumented workers and documents their experience working in fish processing plants as well as provides historical context.
55

A comparison of bumble bees (Bombus spp.) and honey bees (Apis mellifera) for the pollination of Oregon cranberries (Ericaceae: Vaccinium macrocarpon)

Phillips, Kimberly N. 29 November 2011 (has links)
In cranberry (Vaccinium macrocarpon Aiton) cultivation, farmers typically rent colonies of honey bee (Apis mellifera) for pollination. However, the efficiency of this bee at pollinating cranberries in Oregon, as in other regions, is questionable. Bumble bees (Bombus sp.) are reportedly effective in other regions, but their impact in Oregon is unknown. My objectives were to: (i) Compare bumble bee and honey bee pollination efficiencies under caged conditions; (ii) Estimate the abundance of bumble bees, honey bees, and other pollinators on an Oregon cranberry farm; and iii) Analyze and compare sources of pollen collected by bumble bees and honey bees in Oregon cranberries. In comparing pollination efficiencies of bumble bees and honey bees under caged conditions, the analysis of variance of data from the cage study indicated that bumble bee and honey bee pollinated plants yielded statistically equivalent average numbers of cranberries (1421 ± 302.5 and 1405 ± 347.6 berries/m², respectively) and weight of berries (11.5 ± 2.42 and 11.5 ± 2.77g/m²). However, bumble bees may have increased fruit set in honey bee treatments. On one occasion, bumble bees were found in the honey bee treatment, and may have contributed to the pollination of flowers in these plots. To estimate the abundance of pollinators, visual observations and were blue vane traps were utilized. Thirty-four timed visual observations in transects of cranberry beds were performed over on four dates during cranberry bloom. Blue vane traps were set-up on five occasions during bloom for two day periods. In the visual observations, honey bees (3.5 ± 0.58/min) were observed more frequently than bumble bees (1.2 ± 0.20/min). Bumble bees of four species made up 69.1% of trapped bees while honey bees made up 16.6% of bees caught in blue vane traps. On an Oregon cranberry farm during bloom periods in 2009, 2010 and 2011, pollen was collected from honey bee colonies using pollen traps. In 2010 and 2011, pollen was hand collected from reared bumble bee (B. vosnesenkii) colonies at the same farm. A total of 2937 honey bee pollen loads and 171 bumble bee pollen samples (137 scopal pollen loads, and 34 samples from with the colony) were individually acetolyzed and compared to a reference collection using light microscopy. Each pollen load was homogenized and 100 pollen grains were identified and counted to determine the percentage of each pollen type. Pollen collected by honey bees consisted of 29.1 ± 1.4% (2009), 18.3 ± 2.4% (2010), and 23.0 ± 1.1% (2011) cranberry pollen. Cranberry pollen contributed a higher percentage (56.0 ± 6.1%, and 70.4 ± 4.3% in 2010, and 2011, respectively) in bumble bee collected pollen. Both bee species collected pollen from non-target plants including those in the following families: Asteraceae, Fabaceae, Ranunculaceae, and Roseaceae. Native bumble bees (B. vosnesenskii) collected more cranberry pollen than pollen from non-target plants, and consistently collected a higher proportion of cranberry pollen than honey bees. The results of these studies suggest that native bumble bees may be adequate for cranberry pollination in Curry County, Oregon. However, the size of bumble bee populations may vary from year to year due to climactic conditions, availability of nesting sites, and forage before and after cranberry bloom. Thus the dependability and consistency pollination services rendered to cranberry crops by bumble bees needs to be further investigated in relation to population fluxuations. / Graduation date: 2012
56

Independent Filmmaking in the Pacific Northwest: A Critical Analysis of the Regional Film Landscape / Critical Analysis of the Regional Film Landscape

Erickson, Mary P. A., 1977- 06 1900 (has links)
xvii, 397 p. : ill., maps. / Thousands of films are produced every year in the United States, and only a fraction of these is made by mainstream Hollywood film studios. Independent filmmakers working in regional locations produce the majority of these films, retaining financial, creative and distribution control and working with locally-based cast and crew members. This film activity must be acknowledged in order to fully understand the American film industry. This study examines regional independent filmmaking through case studies of two film communities: Portland, Oregon and Seattle, Washington. Using political economy of communication as the primary theoretical foundation, this study focuses on the infrastructure (systems, policies, resources and practices) that supports and/or limits the production and distribution of independent films. The research utilizes extensive document analysis of historical materials and contemporary documents produced by organizations and individuals, as well as a survey of 60 film professionals and interviews with over 40 film professionals. A central challenge to independent filmmaking is the term "independent," which has been contested by film professionals and scholars; therefore, this study analyzes and offers a new definition of "independent filmmaking." The history of filmmaking activity in Portland and Seattle is presented, as well as an extensive discussion of the contemporary landscape of regional independent filmmaking in these two communities. The study finds that there are a multitude of contradictions pertaining to financing, distribution, labor and myths of independent filmmaking. These contradictions present a range of opportunities and challenges that often simultaneously conflict with each other. The filmmaking communities in Portland and Seattle have notable networks of support, including professional and educational organizations, film festivals, government initiatives and a few locally-operated distributors. However, filmmakers in both cities also share challenges in financing, distribution and labor. The study argues that regional independent filmmaking has made a dynamic and influential contribution to the American film industry and cultural production but has been under-explored in academic scholarship. The research also points to the need to examine and understand the contradictions of independent filmmaking to improve the circumstances and infrastructure that support regional independent filmmaking. / Committee in charge: Dr. Janet Wasko, Chairperson; Dr. Gabriela Martinez, Member; Dr. H. Leslie Steeves, Member; Dr. Michael Aronson, Outside Member
57

A Hierarchical Modeling Approach to Simulating the Geomorphic Response of River Systems to Climate Change

Praskievicz, Sarah 29 September 2014 (has links)
Anthropogenic climate change significantly affects water resources. River flows in mountainous regions are driven by snowmelt and are therefore highly sensitive to increases in temperature resulting from climate change. Climate-driven hydrological changes are potentially significant for the fluvial geomorphology of river systems. In unchanging climatic and tectonic conditions, a river's morphology will develop in equilibrium with inputs of water and sediment, but climate change represents a potential forcing on these variables that may push the system into disequilibrium and cause significant changes in river morphology. Geomorphic factors, such as channel geometry, planform, and sediment transport, are major determinants of the value of river systems, including their suitability for threatened and endangered species and for human uses of water. This dissertation research uses a hierarchical modeling approach to investigate potential impacts of anthropogenic climate change on river morphology in the interior Pacific Northwest. The research will address the following theoretical and methodological objectives: 1) Develop downscaled climate change scenarios, based on regional climate-model output, including changes in daily minimum and maximum temperature and precipitation. 2) Estimate how climate change scenarios affect river discharge and suspended-sediment load, using a basin-scale hydrologic model. 3) Examine potential impacts of climate-driven hydrologic changes on stream power and shear stress, bedload sediment transport, and river morphology, including channel geometry and planform. The downscaling approach, based on empirically-estimated local topographic lapse rates, produces high-resolution climate grids with positive forecast skill. The hydrologic modeling results indicate that projected climate change in the study rivers will change the annual cycle of hydrology, with increased winter discharge, a decrease in the magnitude of the spring snowmelt peak, and decreased summer discharge. Geomorphic modeling results suggest that changes in reach-averaged bedload transport are highly sensitive to likely changes in the recurrence interval of the critical discharge needed to mobilize bed sediments. This dissertation research makes an original contribution to the climate-change impacts literature by linking Earth processes across a wide range of spatial scales to project changes in river systems that may be significant for management of these systems for societal and ecological benefits. This dissertation includes unpublished co-authored material.
58

Identifying and interpreting geoarchaeological sites with high prospecting potential using aerial LIDAR, GIS and sedimentological analysis

Lausanne, Alexandra 03 May 2018 (has links)
The dynamic environmental history and relative sea level (RSL) changes experienced on the Pacific Northwest Coast of North America during the early post-glacial period and the early Holocene resulted in significant visibility challenges for prospection of early coastal archaeological sites. Archaeological visibility is the degree to which cultural material survives post-depositional processes and is detectable on the landscape today. It is influenced by environmental factors such as localized differences in relative sea level change, the rainforest canopy and dynamic post-glacial activity. This study offers an integrated methodological approach for locating palaeo-coastal sites by combining: i) geomorphic interpretation of landscape attributes captured by LIDAR (Light Detection and Ranging) mapping, ii) GIS-based archaeological site potential mapping, and iii) local RSL history. The RSL history for the study site (Quadra Island, British Columbia, Canada) shows notable regression over the past 14 500 years from a highstand of at least 195 m resulting from post-glacial isostatic rebound. Late Pleistocene and early Holocene palaeo-shorelines are found inland from, and elevated above, modern sea level and represent key areas for archaeological prospecting. Bare-earth Digital Terrain Models (DTMs) derived from the LIDAR dataset were interpreted to identify palaeo-shorelines at 10 m and 30 m above modern mean sea level. A GIS-derived map was created to identify regions of high archaeological potential using a decision tree method with variables including distance to palaeo-shoreline, low slope and a coastal complexity parameter. Select geoarchaeological sites were examined in terms of sedimentology, stratigraphy, microfossil content and geochronology as site-specific examples of sea level regression stillstands. Field validation results suggest that this integrated methodology provides a promising approach for archaeological prospection that could be applied to other post-glacial coastal settings. / Graduate
59

Quantitative characterization of seismic tremors in the northern Cascadia margin

Thompson, Philip John 10 February 2010 (has links)
The episodic tremor-and-slip (ETS) events refer to the concurrence of westward crustal movements, as evident by GPS observations, and tremor-like seismic activity in the northern Cascadia margin. The regular occurrence of ETS events in the region has been remarkable. In addition to the 14-month period, secondary tremor activities, most of them lasting less than one or two days, are also found with no corresponding GPS signatures. However, the identification of tremor activity is mainly based on visual examination of regional/Iocal seismic records. In this study, we attempt to develop an algorithm that can quantitatively characterize the level of tremors from a collection of seismic waveform data. For each hour of waveform at a given station, the process begins with the calculation of moving average and scintillation index with various time lengths. The scintillation index, essentially the "normalized variance of intensity of the signal", is adapted from the studies of pulses in radio waves and is an efficient tool to identify the pulse-like characteristics of tremor signals. Values of the indices are fed into a series of logic gates that use a combination of both parameters to determine if sufficient tremor activity exists. To demonstrate the effectiveness of our algorithm, seismic waveform data are collected for the known February/March 2003 ETS event. Our analysis gives results consistent with the work done manually. Implementation of our algorithm is straightforward and free from human intervention. Thus, it is potentially possible to automate the tremor monitoring process that may give early warning of the exact arrival time of ETS events.
60

Application of Resiliency Theory and Adaptive Cycles as a Framework for Evaluating Change in Amenity-Transition Communities

Hoffmann, Scott L. 01 December 2008 (has links)
In recent decades, many rural, natural resource-dependent communities have experienced ubiquitous and oftentimes substantial economic decline due to downturns in their commodity-oriented industries. In spite of this, communities with access to varying forms of natural capital have experienced an upsurge in activities such as recreation,tourism, second home growth, and retirement in-migration. If managed properly, amenity-oriented development has potential to reverse economic decline by attracting tourists, entrepreneurs, younger and more educated workers, and retirees, and may ultimately generate economic diversification, local growth, and an improved quality of life for residents. While there are literally thousands of potential measures of well-being, this study aimed to identify potential indicators of amenity-transition by examining community social and economic capital. To examine such a complex social and economic transition, these indicators were coupled with indicators from the tourism and amenity-development literature, and linked to concepts from Resiliency Theory from the ecosystem science literature, in a longitudinal study of amenity transition communities in the Pacific Northwest. Results focus on measures of social organization and economic sustainability in three study communities: McCall, ID; Leavenworth, WA; and Prineville, OR. Key informant interviews and historical documents were used to develop adaptive curves for each community, and to help evaluate the concepts and indicator variables that contribute to community resilience and adaptability. Secondary indicator data serve as a quantitative linkage between Social Capital and Resiliency Theories and the adaptive phases communities may experience throughout this transition. The results identify key historical periods for each community as residents adapt to economic and social change. Using key informant interviews coupled with secondary data provided a clearer picture of how each community has transformed and redefined itself throughout transition.

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