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2012

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Using Dataflow Optimization Techniques With A Monadic Intermediate Language, Justin George Bailey Jan 2012

Using Dataflow Optimization Techniques With A Monadic Intermediate Language, Justin George Bailey

Dissertations and Theses

Our work applies the dataflow algorithm to an area outside its traditional scope: functional languages. Our approach relies on a monadic intermediate language that provides low-level, imperative features like computed jumps and explicit allocations, while at the same time supporting high-level, functional-language features like case discrimination and partial application. We prototyped our work in Haskell using the HOOPL library and this dissertation shows numerous examples demonstrating its use. We prove the efficacy of our approach by giving a novel description of the uncurrying optimization in terms of the dataflow algorithm, as well as a complete implementation of the optimization using …

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Supranationalism In The Fight Against Transnational Threats: A Comparative Study Of Asean And Eu Policy Responses To Human Trafficking, Nicholas M. Klynn Jan 2012

Supranationalism In The Fight Against Transnational Threats: A Comparative Study Of Asean And Eu Policy Responses To Human Trafficking, Nicholas M. Klynn

Dissertations and Theses

Transnational security threats are among the most pressing and complicated problems facing both governmental and non-governmental actors in today's world. Human trafficking is one example of contemporary transnational security threat that is relatively less studied compared to other transnational security threats. Because transnational security threats such as human trafficking exist above and outside the boundaries of state control, it may be supposed that a greater degree of supranationalism in the policy responses to them would yield better results in combatting these modern-day ills. Anti-trafficking efforts from the Association of Southeast Asian Nations and the European Union are examined to assess …

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Material Characterization Of Zinc Oxide In Bulk And Nanowire Form At Terahertz Frequencies, Forest Emerson Kernan Jan 2012

Material Characterization Of Zinc Oxide In Bulk And Nanowire Form At Terahertz Frequencies, Forest Emerson Kernan

Dissertations and Theses

Many new applications are being proposed and developed for use in the terahertz (THz) frequency region. Similarly, many new materials are being characterized for possible use in this area. Nanostructured forms are of particular interest since they may yield desirable properties, but they remain especially challenging to characterize. This work focuses on the characterization of zinc oxide (ZnO) in bulk and nanowire form. A method for characterizing nanostructures at THz by use of a parallel-plate waveguide (PPWG) is presented. This method is novel in that it is simple, both in theory and practice, and does not require the use of …

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Intimate Partner Violence During The Transition From Prison To The Community: An Ecological Analysis, Margaret Joy Freeland Braun Jan 2012

Intimate Partner Violence During The Transition From Prison To The Community: An Ecological Analysis, Margaret Joy Freeland Braun

Dissertations and Theses

While extensive research has been conducted on the causes of intimate partner violence in the community, very little is known about rates and predictors of domestic violence perpetrated by offenders who have recently been incarcerated. Some evidence suggests that formerly incarcerated individuals may be at an increased risk to perpetrate intimate partner violence during the transition from prison to the community (e.g., Hairston & Oliver 2006; Hilton, Harris, Popham, & Lang, 2010; Oliver & Hairston, 2008). The primary goal of this dissertation was to examine the extent to which former inmates engage in domestic violence during the transition from prison …

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Evolved Design Of A Nonlinear Proportional Integral Derivative (Npid) Controller, Shubham Chopra Jan 2012

Evolved Design Of A Nonlinear Proportional Integral Derivative (Npid) Controller, Shubham Chopra

Dissertations and Theses

This research presents a solution to the problem of tuning a PID controller for a nonlinear system. Many systems in industrial applications use a PID controller to control a plant or the process. Conventional PID controllers work in linear systems but are less effective when the plant or the process is nonlinear because PID controllers cannot adapt the gain parameters as needed. In this research we design a Nonlinear PID (NPID) controller using a fuzzy logic system based on the Mamdani type Fuzzy Inference System to control three different DC motor systems. This fuzzy system is responsible for adapting the …

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Essex Under Cromwell: Security And Local Governance In The Interregnum, James Robert Mcconnell Jan 2012

Essex Under Cromwell: Security And Local Governance In The Interregnum, James Robert Mcconnell

Dissertations and Theses

In 1655, Lord Protector Oliver Cromwell's Council of State commissioned a group of army officers for the purpose of "securing the peace of the commonwealth." Under the authority of the Instrument of Government, a written constitution not sanctioned by Parliament, the Council sent army major-generals into the counties to raise new horse militias and to support them financially with a tax on Royalists which the army officers would also collect. In counties such as Essex--the focus of this study--the major-generals were assisted in their work by small groups of commissioners, mostly local men "well-affected" to the Interregnum government. In addition …

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Late-Holocene Flood History, Flood-Frequency, And Paleoclimate Analysis Of The Central Black Hills, South Dakota, Tessa M. Harden Jan 2012

Late-Holocene Flood History, Flood-Frequency, And Paleoclimate Analysis Of The Central Black Hills, South Dakota, Tessa M. Harden

Dissertations and Theses

Stratigraphic records in four basins in the central Black Hills in combination with hydraulic calculations show that all basins have experienced multiple large floods in the last 2,000 years with flow rates substantially larger than those gaged historically. Flood-frequency analyses for the study reaches account for 29 paleofloods inferred from interpretation of stratigraphic records locally extending back 1,000 to almost 2,000 years. The addition of paleoflood data to the gaged and historical data significantly reduced uncertainties related to flood-frequency. For all study reaches the 95-percent confidence intervals about the low-probability quantile estimates (100-, 200-, and 500-year recurrence-intervals) were reduced by …

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Effects Of Reactive Oxygen Species On Life History Traits Of Caenorhabditis Elegans, Samson William Smith Jan 2012

Effects Of Reactive Oxygen Species On Life History Traits Of Caenorhabditis Elegans, Samson William Smith

Dissertations and Theses

Evolutionary life history theory predicts that tradeoffs among fitness-related phenotypes will occur as a result of resource limitations and/or physiological constraints. Such tradeoffs are defined as the cost(s) incurred on one component of fitness (e.g., reproduction) by the increased expression of another fitness-related trait (e.g., longevity). Only recently have researchers begun to investigate the mechanistic bases of life history tradeoffs. A recent proposal is that reactive oxygen species (ROS) have a central role in shaping life history traits and tradeoffs. Research on disparate animal taxa has highlighted strong correlations between oxidative stress resistance and fitness-related life history traits, for example. …

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Giving Voice To The Peace And Justice Challenger Intellectuals: Counterpublic Development As Civic Engagement, Tom Harry Hastings Jan 2012

Giving Voice To The Peace And Justice Challenger Intellectuals: Counterpublic Development As Civic Engagement, Tom Harry Hastings

Dissertations and Theses

"Let knowledge serve the city" reads the golden letters on a pedestrian bridge just 200 feet from my faculty office in Neuberger Hall at Portland State University. Public peace scholarship might allow knowledge to help the polis by keeping it out of war via changing the national discourse toward a strong and informed peace analysis. Educators have an uneasy relationship to public scholarship and mainstream media have a nervous attitude toward public peace intellectuals. Institutions of higher learning are also often either unaware or uncomfortable with a public promotion of a positive peace platform. Academic writing and research is hard …

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Passive Acoustic Vessel Localization, Pasang Sherpa Suwal Jan 2012

Passive Acoustic Vessel Localization, Pasang Sherpa Suwal

Dissertations and Theses

This thesis investigates the development of a low-cost passive acoustic system for localizing moving vessels to monitor areas where human activities such as fishing, snorkeling and poaching are restricted. The system uses several off-the-shelf sensors with unsynchronized clocks where the Time Difference of Arrival (TDOA) or time delay is extracted by cross-correlation of the signal between paired sensors. The cross-correlation function uses phase correlation or Phase Transform (PHAT) which whitens the cross-spectrum in order to de-emphasize dominant frequency components. Using the locations of pairs of sensors as foci, hyperbolic equations can be defined using the time delay between them. With …

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Short-Term Plasticity At The Schaffer Collateral: A New Model With Implications For Hippocampal Processing, Andrew Hamilton Toland Jan 2012

Short-Term Plasticity At The Schaffer Collateral: A New Model With Implications For Hippocampal Processing, Andrew Hamilton Toland

Dissertations and Theses

A new mathematical model of short-term synaptic plasticity (STP) at the Schaffer collateral is introduced. Like other models of STP, the new model relates short-term synaptic plasticity to an interaction between facilitative and depressive dynamic influences. Unlike previous models, the new model successfully simulates facilitative and depressive dynamics within the framework of the synaptic vesicle cycle. The novelty of the model lies in the description of a competitive interaction between calcium-sensitive proteins for binding sites on the vesicle release machinery. By attributing specific molecular causes to observable presynaptic effects, the new model of STP can predict the effects of specific …

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A Strategic Model For Ingo Accountability Systems, Sarah Elizabeth Wardwell Jan 2012

A Strategic Model For Ingo Accountability Systems, Sarah Elizabeth Wardwell

Dissertations and Theses

This thesis reconstructs the concept of International Non-Governmental Organization (INGO) accountability to beneficiaries through the development of a strategic model for INGO accountability to beneficiaries. It works through the history and arguments surrounding the rise of the debate around whether INGOs should be held accountable to their beneficiary populations. Unique definitions are developed for the terms and concepts related to this topic and a framework for understanding the strategic model for INGO accountability to beneficiaries is outlined: Accountable to whom? Accountable for what? Accountable how? A practical example of an internal assessment for measuring an INGO's accountability to beneficiaries is …

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Assessing The Relationship Between Intercultural Competence And Leadership Styles: An Empirical Study Of International Fulbright Students In The U.S., Chris Taylor Cartwright Jan 2012

Assessing The Relationship Between Intercultural Competence And Leadership Styles: An Empirical Study Of International Fulbright Students In The U.S., Chris Taylor Cartwright

Dissertations and Theses

As U.S. higher education institutions strive to educate students to meet the needs of an increasingly complex world, there is great importance in studying the interplay between leadership and culture to enhance preparation of global-ready graduates. This inquiry examines the relationship between intercultural competence and leadership styles. The construct of intercultural competence focuses on effectiveness in engaging people across cultural differences, while the construct of leadership style or "connective leadership" focuses on the achieving styles employed to engage diverse followers. The Fulbright International Student Program offers an unparalleled opportunity to examine the dynamic interplay of intercultural and leadership development. More …

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The Role Of Nucleotide Excision Repair In Restoring Replication Following Uv-Induced Damage In Escherichia Coli, Kelley Nicole Newton Jan 2012

The Role Of Nucleotide Excision Repair In Restoring Replication Following Uv-Induced Damage In Escherichia Coli, Kelley Nicole Newton

Dissertations and Theses

Following low levels of UV exposure, Escherichia coli cells deficient in nucleotide excision repair recover and synthesize DNA at near wild type levels, an observation that formed the basis of the post replication recombination repair model. In this study, we characterized the DNA synthesis that occurs following UV-irradiation in the absence of nucleotide excision repair and show that although this synthesis resumes at near wild type levels, it is coincident with a high degree of cell death. We confirm that the replication occurring under these conditions involves extensive levels of strand exchange. However, cells undergoing this form of replication accumulate …

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The Role Of Psychological Resources In The Relationship Between Work Stressors And Proactive Behavior, Allison Marie Ellis Jan 2012

The Role Of Psychological Resources In The Relationship Between Work Stressors And Proactive Behavior, Allison Marie Ellis

Dissertations and Theses

As contemporary organizations are met with increasing demands and uncertainty, their continued success relies on employees' willingness and ability to think proactively and take action in the face of challenges. Some scholars have reasoned that stressors in the work environment may serve as indicators, to employees, that change is needed, therefore promoting proactive work behavior. However, current theories related to work stress assert that demands in the environment may exert effects dependent on the degree to which resources are available to cope with demands. Drawing on the Job Demands-Resources model and others, the present research examines the interplay between psychological …

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Drowning In It: State Crime And Refugee Deaths In The Borderlands, Brandy Marie Cochrane Jan 2012

Drowning In It: State Crime And Refugee Deaths In The Borderlands, Brandy Marie Cochrane

Dissertations and Theses

This paper examines the current state of border hardening against refugees in the European Union and Australia through the lens of state crime. Border hardening strategies are described for both of these areas and a theoretical basis of state crime victimology is used to examine the refugees who encounter this border hardening. The present study analyzes two data sets on border deaths, one for the European Union and one for Australia, to examine the demographics of the refugees who perish while attempting to transgress the border. Results indicated that there remains a significant amount of missing data, suggesting that official …

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"We Were Privileged In Oregon": Jessie Laird Brodie And Reproductive Politics, Locally And Transnationally, 1915-1975, Sadie Anne Adams Jan 2012

"We Were Privileged In Oregon": Jessie Laird Brodie And Reproductive Politics, Locally And Transnationally, 1915-1975, Sadie Anne Adams

Dissertations and Theses

This thesis conveys the history of reproductive politics in Oregon through the life of Dr. Jessie Laird Brodie (1898-1990). Brodie was a key figure in this history from the 1930's until the 1970's, mainly through the establishment of family planning programs through social and medical channels in Oregon and throughout Latin America. Oregon's reproductive legislation walked a fine line between conservatism and progressivism, but in general supported reproductive healthcare as a whole in comparison to the rest of the United States and Latin America. The state passed controversial contraceptive legislation in 1935 that benefited public health, but also passed eugenic …

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Voicing Oppositional Conformity: Sarah Winnemucca And The Politics Of Rape, Colonialism, And "Citizenship": 1870-1890, Jennifer Bailey Jan 2012

Voicing Oppositional Conformity: Sarah Winnemucca And The Politics Of Rape, Colonialism, And "Citizenship": 1870-1890, Jennifer Bailey

Dissertations and Theses

Sarah Winnemucca, a Paiute Indian born around the year 1844, crossed cultural boundaries and became an influential voice within both white and Indian societies. This thesis employs a settler colonial framework that places the sexuality and rape of native women at the center of colonial relations in the settlement of the Americas. Viewed through this lens I perform an in-depth analysis of Winnemucca's gendered critique of colonialism that focused on sexual violence. Rather than the unstable, mixed messages of native resistance and assimilation emphasized by earlier scholars, I argue that Winnemucca purposefully employed a strategy of oppositional conformity to publicize …

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Gendering Gardasil: Framing Gender And Sexuality In Media Representations Of The Hpv Vaccine, Maura Kathleen Pisciotta Jan 2012

Gendering Gardasil: Framing Gender And Sexuality In Media Representations Of The Hpv Vaccine, Maura Kathleen Pisciotta

Dissertations and Theses

In an age of biomedicine, technologies, drugs, and treatments are expanding in new and diverse ways. Especially relevant to biomedicalization and this research is how such information is conveyed to the public through the media. Medical information is omnipresent in the media through direct-to-consumer (DTC) advertising and regular coverage of health topics in the news. The accessibility and proliferation of medical information provides an important opportunity to examine the ways in which these topics are framed in the media. This research specifically examines the framing of the HPV vaccine, Gardasil in the mass media. In this study, I explore how …

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Teacher Stress And Coping: Does The Process Differ According To Years Of Teaching Experience?, Jeffry Childs Beers Jan 2012

Teacher Stress And Coping: Does The Process Differ According To Years Of Teaching Experience?, Jeffry Childs Beers

Dissertations and Theses

Teaching is stressful. The demands placed on teachers can result in emotional exhaustion and burnout, causing many to leave the profession. Teachers early in their careers seem to be at special risk, with desistence rates estimated as high as 40% in the first five years. This study was based on the notion that constructive coping can be a resource for teachers, and that teachers later in their professional lives may provide a model for adaptive ways of dealing with professional demands. The goal of the study was to examine whether the coping process utilized by teachers (including reported demands, appraisals, …

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Measurement And Simulation Of Parallel Plate Waveguide Structures In The Terahertz Region For Sensing And Material Characterization Applications, James Alexander Higgins Jan 2012

Measurement And Simulation Of Parallel Plate Waveguide Structures In The Terahertz Region For Sensing And Material Characterization Applications, James Alexander Higgins

Dissertations and Theses

The THz region is a burgeoning field of research with applications in spectroscopy, integrated circuit fabrication, bio-medicine, and communications. Until recently, the THz region was largely unexplored, mainly due to the technical difficulties involved in making efficient and compact sources and detectors. As these challenges are addressed, the focus of research has shifted to practical applications, such as sensing and imaging. The focus of this thesis is to investigate the characterization of parallel plate waveguide multimode propagation and periodically notched resonant structures for use in sensing and material parameter extraction applications. Broadband and narrowband measurements are presented and analyzed. Measurements …

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A Historical And Archaeological Study Of The Nineteenth Century Hudson's Bay Company Garden At Fort Vancouver: Focusing On Archaeological Field Methods And Microbotanical Analysis, Elaine C. Dorset Jan 2012

A Historical And Archaeological Study Of The Nineteenth Century Hudson's Bay Company Garden At Fort Vancouver: Focusing On Archaeological Field Methods And Microbotanical Analysis, Elaine C. Dorset

Dissertations and Theses

The Hudson's Bay Company (HBC), a British fur-trading enterprise, created a large garden at Fort Vancouver, now in southwest Washington, in the early- to mid-19th century. This fort was the administrative headquarters for the HBC's activities in western North America. Archaeological investigations were conducted at this site in 2005 and 2006 in order to better understand the role of this large space, which seems incongruous in terms of resources required, to the profit motive of the HBC. Questions about the landscape characteristics, and comments by 19th century visitors to the site provided the impetus for theoretical research of gardens as …

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An Empirical Study Of Particulate Matter Exposure For Transit Users At Bus Stop Shelters, Adam Moore Jan 2012

An Empirical Study Of Particulate Matter Exposure For Transit Users At Bus Stop Shelters, Adam Moore

Dissertations and Theses

Congested traffic corridors in dense urban areas are key contributors to the degradation of urban air quality. While waiting at bus stops, transit patrons may be exposed to greater amounts of vehicle-based pollution, including particulate matter, due to their proximity to the roadway. Current guidelines for the location and design of bus stops do not take into account air quality or exposure considerations. This thesis provides a unique contribution to roadside air quality studies and presents an innovative method for the consideration of bus shelter placement. Exposure to roadside pollutants is estimated for transit riders waiting at three-sided bus stop …

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The Effects Of Hypoxia And Temperature On Developing Embryos Of The Annual Killifish Austrofundulus Limnaeus, Skye N. Anderson Jan 2012

The Effects Of Hypoxia And Temperature On Developing Embryos Of The Annual Killifish Austrofundulus Limnaeus, Skye N. Anderson

Dissertations and Theses

Little is known about the physiology or biochemistry of hypoxia (reduced levels of oxygen) tolerance during development in vertebrate embryos. In most species, relatively brief bouts of severe hypoxia are lethal or teratogenic. An exception to such hypoxia intolerance is the annual killifish Austrofundulus limnaeus, in which populations persist in hypoxic environments. This species inhabits seasonal ponds in Venezuela, surviving through the dry season in the form of diapausing embryos. Embedded in the pond sediment, embryos of A. limnaeus are routinely exposed to hypoxia and anoxia (lack of oxygen) as part of their normal development. Here, we exposed embryos to …

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Implementer Perspectives: The Implementation Of A School-Based Mentoring Program, Amanda Angela Fixsen Jan 2012

Implementer Perspectives: The Implementation Of A School-Based Mentoring Program, Amanda Angela Fixsen

Dissertations and Theses

This research describes organizational level implementation strategies utilized in piloting enhancements to the school-based mentoring program from Big Brothers Big Sisters of America. Semi-structured interviews (n=15) with lead agency implementers along with conference call meeting notes were analyzed using qualitative content analysis. Findings yield a description of the challenges to implementation and strategies to overcome these challenges, formal implementation strategies engaged in, and the extent to which these align with an implementation framework put forth by Klein, Conn, and Sorra (2001) with supplement from Fixsen, Naoom, Blase, Friedman, and Wallace (2005). Findings from this study indicate that financial resources, management …

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Memristor-Based Reservoir Computing, Manjari S. Kulkarni Jan 2012

Memristor-Based Reservoir Computing, Manjari S. Kulkarni

Dissertations and Theses

In today's nanoscale era, scaling down to even smaller feature sizes poses a significant challenge in the device fabrication, the circuit, and the system design and integration. On the other hand, nanoscale technology has also led to novel materials and devices with unique properties. The memristor is one such emergent nanoscale device that exhibits non-linear current-voltage characteristics and has an inherent memory property, i.e., its current state depends on the past. Both the non-linear and the memory property of memristors have the potential to enable solving spatial and temporal pattern recognition tasks in radically different ways from traditional binary transistor-based …

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Let's Try To Change It: Psychiatric Stigmatization, Consumer/Survivor Activism, And The Link And Phelan Model, María Jimena Alvarado Chavarría Jan 2012

Let's Try To Change It: Psychiatric Stigmatization, Consumer/Survivor Activism, And The Link And Phelan Model, María Jimena Alvarado Chavarría

Dissertations and Theses

Stigma has been described as the most significant obstacle to quality of life for individuals with major psychiatric diagnoses (Sartorious, 1998). Much of the psychological literature on stigma focuses on individual attributes and interactions at the micro level, rather than macro level dynamics. In critiquing this traditional focus, Link and Phelan (2001) present a model in which stigma ensues when labeling, stereotyping, separation, status loss, and discrimination co-occur in a situation of power imbalance. Even as the model fills a gap in conceptualizing stigma, its emphasis on power is unidirectional and fails to account for power as a form of …

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Development Of A Nephelometry Camera And Humidity Controlled Cavity Ring-Down Transmissometer For The Measurement Of Aerosol Optical Properties, James Gregory Radney Jan 2012

Development Of A Nephelometry Camera And Humidity Controlled Cavity Ring-Down Transmissometer For The Measurement Of Aerosol Optical Properties, James Gregory Radney

Dissertations and Theses

A Nephelometry camera (NephCam) and Humidity Controlled Cavity Ring-Down Transmissometer (HC-CRDT) were developed for the determination of aerosol optical properties. The NephCams use a reciprocal geometry relative to an integrating nephelometer; a diode laser illuminates a scattering volume orthogonal to a charge coupled device (CCD). The use of a CCD allows for measurement of aerosol scattering in 2 dimensions; scattering coefficients and size information can be extracted. The NephCam's optics were characterized during a set of imaging experiments to optimize the images collected by the camera. An aperture setting of 1.6 was chosen because it allowed for the most light …

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The Basic Scheme For The Evaluation Of Functional Logic Programs, Arthur Peters Jan 2012

The Basic Scheme For The Evaluation Of Functional Logic Programs, Arthur Peters

Dissertations and Theses

Functional logic languages provide a powerful programming paradigm combining the features of functional languages and logic languages. However, current implementations of functional logic languages are complex, slow, or both. This thesis presents a scheme, called the Basic Scheme, for compiling and executing functional logic languages based on non-deterministic graph rewriting. This thesis also describes the implementation and optimization of a prototype of the Basic Scheme. The prototype is simple and performs well compared to other current implementations.

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Relative Heart Ventricle Mass And Cardiac Performance In Amphibians, Gregory Joseph Kluthe Jan 2012

Relative Heart Ventricle Mass And Cardiac Performance In Amphibians, Gregory Joseph Kluthe

Dissertations and Theses

This study used an in situ heart preparation to analyze the power and work of spontaneously beating hearts of four anurans (R. marina, L. catesbeianus, X. laevis, P. edulis) and three urodeles (N. maculosus, A. tigrinum, A. tridactylum) in order to elucidate the meaning of relative ventricle mass (RVM) in terms of specific cardiac performance variables. This study also tests two hypotheses: 1) the ventricles of terrestrial species (R. marina, P. edulis, A. tigrinum) of amphibians are capable of greater maximum power outputs (Pmax) compared to aquatic species (X. laevis, A. tridactylum, N. maculosus, L. catesbeianus) and, 2) …

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