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  • Learning cost-sensitive diagnostic policies from data

    Creator:
    Zubek, Valentina Bayer
    Abstract:
    In its simplest form, the process of diagnosis is a decision-making process in which the diagnostician performs a sequence of tests culminating in a diagnostic decision. For example, a physician might perform a series of simple measurements (body tem- perature, weight, etc.) and laboratory measurements (white blood count, CT scan,...
    Resource Type:
    Dissertation
    Full Text:
    corrected_thesis.dvi AN ABSTRACT OF THE DISSERTATION OF Valentina

  • Complex patterns in gender HCI : a data mining study of factors leading to end-user debugging success for females and males

    Creator:
    Grigoreanu, Valentina I.
    Abstract:
    Most of the work so far in the subfield of Gender HCI has followed a theory-driven approach. Established theories, however, do not take into account specific issues that arise in end-user debugging. We suspected that there may be important information that we were overlooking. We therefore employed a methodology change:...
    Resource Type:
    Masters Thesis
    Full Text:
    OF THE THESIS OF Valentina Grigoreanu for the degree of Master of Science in Computer Science

  • Understanding and supporting end-user debugging strategies

    Creator:
    Grigoreanu, Valentina I.
    Abstract:
    End users' programs are fraught with errors, costing companies millions of dollars. One reason may be that researchers and tool designers have not yet focused on end-user debugging strategies. To investigate this possibility, this dissertation presents eight empirical studies and a new strategy-based end-user debugging tool for Excel, called StratCel....
    Resource Type:
    Dissertation
    Full Text:
    Valentina I. Grigoreanu for the degree of Doctor of Philosophy in Computer Science presented on December 1

  • Addressing Emerging Issues in Tropical Ecohydrology : A Combined Hydrometric and Isotopic Approach to Evaluate the Origin and Age of Water in a High-Elevation Tropical Ecosystem

    Creator:
    Mosquera, Giovanny M.
    Abstract:
    This thesis focuses on the identification of ecohydrological processes in nested system of catchments in a tropical alpine (the wet Andean páramo) ecosystem. We accomplish this by conducting a water stable isotopic characterization of water sources, an evaluation of the mean transit time (MTT) of streams waters, and the investigation...
    Resource Type:
    Masters Thesis
    Full Text:
    -Elevation Tropical Ecosystem Abstract approved: Kellie B. Vaché Steven S. Perakis This thesis

  • Developing NGSS Scientific Practices Through Inquiry in an Outdoor Learning Environment

    Creator:
    Halsey Randall, Micki Marie
    Abstract:
    The National Research Council has aggregated research evidence on the pedagogy of science teaching and learning (NRC, 2012), culminating in the Next Generation Science Standards (NGSS). These standards support emphasis on eight scientific practices as an important component for teaching science as inquiry to K-12 students. This latest framework for...
    Resource Type:
    Dissertation
    Full Text:
    A. Inquiry Investigation Report Guidelines …………………………….. 136 B. Background Research Round 2

  • Gender differences in robot teleoperation

    Creator:
    Showkat, Dilruba
    Abstract:
    Gender issues have recently received increased attention in human robot interaction (HRI). Because robots are becoming part of our homes and daily lives, it is important to understand how different groups of people use them. To the best of our knowledge, almost no research has been done that investigates gender...
    Resource Type:
    Masters Thesis
    Full Text:
    ) Page B Post-task Session Questionnaire . . . . . . . . . . . . . . . . . . . . . 83 C Handout

  • Gender differences in end-user debugging strategies

    Creator:
    Narayanan, Vaishnavi
    Abstract:
    There has been little prior research reporting strategy usage in end-user problem solving, and even less using gender as a factor. Without this type of information, enduser programming systems cannot know the “target” at which to aim, if they are to support male and female end-user programmers’ debugging. As a...
    Resource Type:
    Masters Thesis
    Full Text:
    . Laura Beckwith, Neeraja Subrahmaniyan, Valentina Grigoreanu, Joey Lawrance and Flora Tan for their

  • Metagenomics and metatranscriptomics of the leaf- and root-associated microbiomes of Zostera marina and Zostera japonica

    Creator:
    Wojahn, John Michael Adrian
    Abstract:
    A great deal of research has been focused on the microbiomes of terrestrial angiosperms (flowering plants), but much less research has been performed on the microbiomes of aquatic angiosperms (Turner et al. 2013). Eelgrass beds are extremely productive ecosystems that provide habitat for many marine organisms, such as fish, shellfish,...
    Resource Type:
    Honors College Thesis
    Full Text:
    Microbiol 62. Bailey, B. E. Flood, B, E. 2015. Sedimenticola thiotaurini sp. nov., a sulfur-oxidizing

  • The sum of its parts : investigating the component pieces of GenderMag

    Creator:
    Hill, Charles
    Abstract:
    Previous work introduced the GenderMag method, a software inspection method used to help software creators identify features within their software that are not gender-inclusive. Inclusiveness of software (gender or otherwise) matters because supporting diversity matters—it is well-known that the more diverse a group of problem-solvers, the higher the quality of...
    Resource Type:
    Masters Thesis
    Full Text:
    [67]. Reasons cited for these benefits are: (a) that personas focus issues [45], (b) they provide

  • Practices for Engineering Gender-Inclusivity into Software

    Creator:
    Hilderbrand, Claudia
    Abstract:
    Although the need for gender-inclusivity in software itself is gaining attention among both SE researchers and SE practitioners, and methods have been published to help, little has been reported on how to make such methods work in real-world settings. For example, how do busy software practitioners use such methods in...
    Resource Type:
    Masters Thesis
    Full Text:
    Information for instructors and students about B Unknown Interface for an AI product C 5 Analytics and

  • Newcomers’ Barriers. . . Is That All? An Analysis of Mentors’ and Newcomers’ Barriers in OSS Projects

    Creator:
    Balali, Sogol
    Abstract:
    Newcomers’ seamless onboarding is important for open collaboration communi- ties, particularly those that leverage outsiders’ contributions to remain sustainable. Nevertheless, previous work shows that OSS newcomers often face several barriers to contribute, which lead them to lose motivation and even give up on contributing. A well-known way to help newcomers...
    Resource Type:
    Masters Thesis
    Full Text:
    involved in mentoring newcomers to your team, project, or company? 2.a What made you become a mentor? 2.b

  • Intensification of Solvent Extraction in an Additively Manufactured Microfluidic Separator

    Creator:
    Touma, Jad George, Coblyn, Matthew, Freiberg, Lucas Joseph, Kowall, Cliff, Zoebelein, Avaline, and Jovanovic, Goran Nadezda
    Abstract:
    Solvent extraction is an integral chemical and biochemical separation process that is drastically intensified in microfluidic systems. A novel high-throughput micro-separator was additively manufactured for the intensification of liquid–liquid separation. The micro-posts array within the flow plate generated a capillary pressure gradient on the non-wetting organic phase, enabling continuous, membrane-free,...
    Resource Type:
    Article
    Full Text:
    Jad George Touma a, ⁎, Matthew Coblyn a, Lucas Joseph Freiberg a, Cliff Kowall b, Avaline Zoebelein a

  • An Agent-Based Simulation for Emergency Warning Dissemination in a Multiplex Social Network

    Creator:
    Koll, Charles D.
    Abstract:
    The variety of natural disasters provide different sets of characteristics and properties with unique challenges. One significant difference between hazard types is prewarning lead time, the amount of time individuals have from a potential warning to the disaster occurring. Rapid onset disasters may not provide an official warning about a...
    Resource Type:
    Masters Thesis
    Full Text:
    indicates how Figure 2.1 could be represented as a multigraph. Layer 3 A B CD E A B CD E A B CD E

  • Harnessing Heterogeneity in Human Gut Microbiome Data

    Creator:
    Tataru, Christine
    Abstract:
    The focus of this thesis is to design, characterize, and apply novel computational methods and molecular systems to interrogate heterogeneous human gut microbiome-related phenomena. In Chapter 2, I design, implement, and characterize a method for embedding co-occurrence patterns derived from massive 16s amplicon datasets. I use this method to 1....
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267 B Chapter 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273 C Chapter 4

  • Toward end-user debugging of machine-learned programs

    Creator:
    Kulesza, Todd
    Abstract:
    The results of a machine learning from user behavior can be thought of as a program, and like all programs, it may need to be debugged. Providing ways for the user to debug it matters because without the ability to fix errors, users may find that the learned program’s errors...
    Resource Type:
    Masters Thesis
    Full Text:
    have been similarly supportive, both in and out of the lab. In particular, Chris Bogart, Valentina

  • Scientists' perspectives on the importance of scientific communication in natural resource decision-making

    Creator:
    Shaw, Christine Michelle
    Abstract:
    Natural resource decisions require consideration at many levels, ranging from how one invertebrate will be affected by a nearby road, to how an entire watershed will be transformed by a massive clearcut. Considerations reach farther than just the local ecological community-human communities, economies, and future impacts on the communities and...
    Resource Type:
    Masters Thesis
    Full Text:
    progressed through this program with me. Laura White, Jim Wilton, Valentina Fomenko, Sally Duncan, Chad

  • Supporting end-user debugging

    Creator:
    Kissinger, Cory
    Abstract:
    Although researchers have begun to explicitly support end-user programmers’ debugging by providing information to help them find bugs, there is little research addressing the right content to communicate to these users. The specific semantic content of these debugging communications matters because, if the users are not actually seeking the information...
    Resource Type:
    Masters Thesis
    Full Text:
    Subrahmaniyan and Dr. Sherry Yang. I would also like to thank Valentina Grigoreanu and Vaishnavi Narayanan for

  • Genetic Diversity and Antimicrobial Resistance of Listeria monocytogenes within Produce Handling and Processing Environments

    Creator:
    Bland, Rebecca N.
    Abstract:
    Listeria monocytogenes is a foodborne pathogen frequently associated with food processing environments. Its presence is particularly concerning in facilities handling minimally processed and ready-to-eat foods. Recent outbreaks associated with fresh produce, such as packaged salads and mushrooms, highlight the need to better understand and control these pathogens in environments that...
    Resource Type:
    Masters Thesis
    Full Text:
    exposed to sanitizers. b. Contextualize variables and results within this field so that results can be

  • Interconnection Networks Based on Gaussian and Eisenstein-Jacobi Integers

    Creator:
    Shamaei, Arash
    Abstract:
    Quotient rings of Gaussian and Eisenstein-Jacobi(EJ) integers can be deployed to construct interconnection networks with good topological properties. In this thesis, we propose deadlock-free deterministic and partially adaptive routing algo­rithms for hexagonal networks, one special class of EJ networks. Then we discuss higher dimensional Gaussian networks as an alternative to...
    Resource Type:
    Dissertation
    Full Text:
    routing. . . . . . . . . 10 2.6 The turn model for 2D mesh. (a)The North to West turn is not allowed. (b

  • Flow-Solute : A Tool for Exploring the Effects of Nitrogen Management in Alternative Future Scenarios

    Creator:
    Wentworth, Andrew Michael
    Abstract:
    Surface water quality is a growing concern in the Willamette River Basin and elsewhere. The region's growing population is dependent on the availability of clean water for drinking water, irrigation, wastewater dilution, and wildlife habitat. Watershed management to produce economic goods and environmental services requires an understanding of basic hydrologic...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Kellie B. Vaché Surface water quality is a growing concern in the Willamette River Basin

  • How does AAR/AI Support Problem Solvers with Diverse Behaviors and Cognitive Styles?

    Creator:
    Dikkala, Rupika
    Abstract:
    "What’s wrong with this AI?" Explainable AI (XAI) researchers are moving beyond explaining an AI’s actions, to helping users detect an AI’s failures. However this detection may not be enough—for actionability, we often need to pinpoint which part failed. We investigate how AAR/AI, a structured assessment process, supports users with...
    Resource Type:
    Masters Thesis
    Full Text:
    and described Fault D. Red boxes denote: (a) Screenshot of the game at that DP (Section 3.1.1); (b

  • Chemical and Genetic Investigations of Toxic Freshwater Cyanobacterial Blooms for Improved Monitoring and Understanding of Lake Ecology

    Creator:
    Collart, Lindsay P.
    Abstract:
    Toxin production by cyanobacterial harmful algal blooms (cyanoHABs) in freshwater systems has lasting ecological and human impacts. Nutrients, light availability, hydrology, and microbial community composition impact the frequency and intensity of toxic cyanoHABs. Climate change will exacerbate toxic cyanoHABs, making real time and predictive monitoring a vital tool for managing...
    Resource Type:
    Dissertation

  • Trade and productivity effects on firm behavior : the case of Korean manufacturing

    Creator:
    Kim, Sooil
    Abstract:
    This dissertation’s three essays investigate trade and productivity effects on firm behavior based on new heterogeneous-firms trade models in the case of Korea. In the first essay, firms’ decision to export in the case of Korean manufacturing industries is examined, where the change in firms’ productivity before and after exports...
    Resource Type:
    Dissertation

  • Advances in Freshwater Cyanobacterial Genomics

    Creator:
    Brown, Nathaniel M.
    Abstract:
    Limnology is undergoing a transition to high-throughput -omic analysis of freshwater bacterial communities. An important first step in making the transition is to characterize several genomes that can be used as references to guide metagenome assembly and analysis. Here I characterize four new freshwater cyanobacterial genomes, a pair of lake...
    Resource Type:
    Dissertation
    Full Text:
    Anderson Lake at 48.0190 N, 237.1963 W on the Olympic Peninsula. B) A brightfield micrograph of Anabaena sp

  • Spatiotemporal Phytohormone Distributions in Developing Pinot Noir Berries and the Effects of Two Viticulture Practices Thereon

    Creator:
    Schmidt, Joseph A.
    Abstract:
    In recent years, many studies have focused on the molecular and biochemical mechanisms regulating the development of wine grapes. The course of grape berry development is directed by genetic design and is mediated by phytohormones, which regulate grape berry growth and development by orchestrating a complex network of interacting genes,...
    Resource Type:
    Masters Thesis
    Full Text:
    ABA-GE – Abscisic acid glycol ester ABA-OH – ABA-8’HYDROXSYLASE B – blue-yellowness BD – berry

  • Effects of Aquatic Resource Subsidies on the Ecology of Terrestrial Top Predators

    Creator:
    Eriksson, Charlotte E.
    Abstract:
    Energetic resources transferred between distinct habitats or ecosystems, referred to as allochthonous resources, can greatly subsidize consumers in the recipient habitat, and thus influence food web structure and dynamics. Such subsidies may allow the growth of the consumer population to be decoupled from in situ productivity with effects on consumer...
    Resource Type:
    Dissertation
    Full Text:
    home. I particularly thank Claumir Muniz, Amabilen Oliveira Furlan and Valentina for generously

  • International comparison and evaluation of agricultural productivity growth

    Creator:
    Rada, Nicholas E.
    Abstract:
    Long-run food price changes respond to long-run changes in food demand, quasi-fixed and variable production factors, and agricultural productivity. Recent global food-price volatility puts a renewed spotlight on the trends and sources of any agricultural productivity growth. Because food prices’ most critical effects are on human hunger, it is especially...
    Resource Type:
    Dissertation
    Full Text:
    ……………………….………………... 99 Appendix B: Brazilian Empirical Results…………………….…………………… 109

  • Information foraging in debugging

    Creator:
    Lawrance, Joseph A.
    Abstract:
    Programmers spend a substantial fraction of their debugging time by navigating through source code, yet little is known about how programmers navigate. With the continuing growth in size and complexity of software, this fraction of time is likely to increase, which presents challenges to those seeking both to understand and...
    Resource Type:
    Dissertation
    Full Text:
    (Paul Cull, Carlos Jensen, Christine Wallace, Surabh Setia, Valentina Grigoreanu, Stephen

  • Explaining debugging strategies to end-user programmers

    Creator:
    Subrahmaniyan, Neeraja
    Abstract:
    There has been little research into how end-user programming environments can provide explanations that could fill a critical information gap for end-user debuggers – help with debugging strategy. To address this need, we designed and prototyped a video-based approach for explaining debugging strategy, and accompanied it with a text-only approach....
    Resource Type:
    Masters Thesis
    Full Text:
    . My warm gratitude to all my research colleagues—Laura Beckwith, Valentina Grigoreanu, Joey

  • Network Analysis and Change-point Detection

    Creator:
    Xu, Jiarui
    Abstract:
    Analysis of observations on sequential events over time is common in real life. Sequential measurements over time describing the behavior of systems are usually called time series data, which have been collected in a wide range of disciplines. Over the years there have been multiple research areas in studying stochastic...
    Resource Type:
    Dissertation
    Full Text:
    2 . . . . . . . . . . . . . . . . . . . . . . . . . . 159 B Appendix to chapter 3

  • In situ Agrobiodiversity Conservation Planning in Centers of Origin: The Role of Culture

    Creator:
    Guerrero Ochoa, Isabel G.
    Abstract:
    Managing agricultural diversity ensures a range of public services, such as genetic resource diversity, food security for subsistence-based economies, and landscape resilience in the context of climate change, among others. These agrobiodiversity conservation services are positive externalities from agrobiodiversity conservation. Whereas their value is not captured in market transactions, management...
    Resource Type:
    Dissertation
    Full Text:
    words of encouragement during all these years. To my Valentina, for bringing so much joy and

  • Analysis of Bayesian anytime inference algorithms

    Creator:
    Burgess, Scott Alan
    Abstract:
    This dissertation explores and analyzes the performance of several Bayesian anytime inference algorithms for dynamic influence diagrams. These algorithms are compared on the On-Line Maintenance Agent testbed, a software artifact permitting comparison of dynamic reasoning algorithms used by an agent on a variety of simulated maintenance and monitoring tasks. Analysis...
    Resource Type:
    Dissertation
    Full Text:
    ................................................. 100 Appendix B: Raw Data for Experiments with the Peaked Backward Simulation Algorithm

  • Children of Mexican migrant farmworkers in Oregon : experiences and challenges with belonging

    Creator:
    Crawford, Ashley
    Abstract:
    This thesis explores the experiences and negotiations of belonging for children of Mexican migrant farmworkers in Oregon. Ethnographic data was collected over the course of several months with Mexican migrant farmworkers and their children in agricultural fields in Oregon and at Oregon State University. The children in this project have...
    Resource Type:
    Masters Thesis

  • Spatiotemporal Distributions of Bacteria in the Cheddar Production Environment

    Creator:
    Johnson, Jared D.
    Abstract:
    Given the many significant roles that bacteria play in modern food manufacturing, it is crucial that we have a fundamental understanding of how bacterial communities assemble and behave in the food manufacturing environment. The focus of this dissertation was to investigate both the spatial and temporal distributions of microbial communities...
    Resource Type:
    Dissertation
    Full Text:
    depicting generalized changes in A) species richness, B) alpha diversity, and C) bacterial load in in

  • An Investigation of the Effects of Merge Conflicts on Collaborative Software Development

    Creator:
    Brindescu, Caius
    Abstract:
    Merge conflicts have long plagued software development. With larger and more dispersed teams comes greater risk of developers working on the same code at the same time. While merge conflicts are known to be painful, their exact impact on software is still largely unknown. Are merge conflicts an isolated problem,...
    Resource Type:
    Dissertation
    Full Text:
    the QuickResolution pattern occurred; an instance is magnified in subfigure (b

  • Gender HCI issues in end-user programming

    Creator:
    Beckwith, Laura A.
    Abstract:
    Until recently, research has not considered whether the design of end-user programming environments, such as spreadsheets, multimedia authoring languages, and CAD systems, affects males and females differently. As a result, we began investigating how the two genders are impacted by end-user programming software and whether attention to gender differences is...
    Resource Type:
    Dissertation
    Full Text:
    , Shraddha Sorte, Valentina Grigoreanu, Vaishnavi Narayanan, Kyle Rector, Derek Inman, Neeraja

  • Designing Diversity and Inclusion Processes and Tools for Sustainable Open Source

    Creator:
    Guizani, Mariam
    Abstract:
    Over time, Open Source Software (OSS) has become indispensable in the creation and upkeep of software products, serving as the fundamental building block for widely used solutions in our daily lives, including applications that enable communication, entertainment, and productivity. A sustainable OSS ecosystem is one that attracts and retains a...
    Resource Type:
    Dissertation
    Full Text:
    ) . . . . . . . . . . . . . . . . 188 B Perceptions of the State of D&I and D&I Initiative in the ASF (Supplemental)211 C Rules of

  • Helping end-user programmers help themselves : the idea garden approach

    Creator:
    Cao, Chen
    Abstract:
    End-user programmers face many barriers in programming. Research has seen many programming environments that attempted to lower or remove the barriers but despite these efforts, empirical studies continue to report barriers users face. To investigate this issue, we took a theory-informed approach. Using theories from design, creativity, and problem solving...
    Resource Type:
    Dissertation
    Full Text:
    Adams, Rachel White, Forrest Bice, Valentina Grigoreanu, Kyle Rector, and Thomas H. Park. Your efforts

  • Model-based approximation methods for reinforcement learning

    Creator:
    Wang, Xin
    Abstract:
    The thesis focuses on model-based approximation methods for reinforcement learning with large scale applications such as combinatorial optimization problems. First, the thesis proposes two new model-based methods to stablize the value–function approximation for reinforcement learning. The first one is the BFBP algorithm, a batch-like reinforcement learning process which iterates between...
    Resource Type:
    Dissertation
    Full Text:
    , encouragement, and help during the first couple of years, and Bill Langford, Valentina Bayer Zubek, and Dragos

  • Supporting merge comprehension when resolving merge conflicts

    Creator:
    Nelson, Nicholas
    Abstract:
    Distributed version control allows developers to manage software evolution among distributed development teams. But it does not eliminate all consistency and concurrency issues, and instead introduces additional complexity when merging code. And resolving merge conflicts is nontrivial when automated merging fails. In such cases, developers are forced to inspect the...
    Resource Type:
    Dissertation
    Full Text:
    Exploratory Interview Script 138 B Barriers Survey Questions 140 C Processes Survey Questions 151 D

  • An exploration of information and communication technology use on the part of Eritrean refugees in Rome, Italy

    Creator:
    Opas, Matthew E.
    Abstract:
    Thesis explores the ways in which Information and Communication Technology (ICT)use, specifically that of telephones and the Internet, impacts the lives of Eritrean refugees in Rome, Italy. Informal interviews, semi-structured interviews, and participant observation were carried out in a 'center of second reception.' Results show that information obtained through the...
    Resource Type:
    Masters Thesis

  • Investigating the Effects of Design Quality in OSS Projects

    Creator:
    Mannan, Umme Ayda
    Abstract:
    Software systems are becoming an essential part of the lives of both individuals and organizations, and as a consequence, these systems are getting bigger and more complex. Because of this, the tasks of maintaining the quality in these complex software systems are becoming increasingly difficult. Furthermore, these systems are subject...
    Resource Type:
    Dissertation
    Full Text:
    participation of core and non core developers in a) design discussion, b)implementing design discussion . 81

  • Eliciting informal specifications from scientific modelers for evaluation and debugging

    Creator:
    Bogart, Christopher
    Abstract:
    Professional software engineers have an arsenal of techniques such as unit testing and assertions to check their specifications, but these techniques require tools, motivation, experience and training that programmers without professional software engineering training may not have. As a result, professionals in other fields, such as scientific modelers, face greater...
    Resource Type:
    Dissertation
    Full Text:
    collaboration and advice: Scott Fleming, Irwin Kwan, Jill Cao, Valentina Grigoreanu, Todd Kulesza, Faezeh

  • A Computational Framework for Resilience-Informed Design

    Creator:
    Hulse, Daniel E.
    Abstract:
    It is desirable for complex engineered systems to perform missions efficiently and economically, even when these missions' complex, variable, long-term operational profiles make it likely for hazards to arise. It is thus important to design these systems to be resilient so that they will actively prevent and recover from hazards...
    Resource Type:
    Dissertation

  • Advocates Empowered : Queering the Contemporary Movement Against Sexual and Domestic Violence.

    Creator:
    Shelton, Samuel Z.
    Abstract:
    While the contemporary movement against sexual and domestic violence has roots in radical, feminist theory and anti-state, community-based modes of resistance, over the past several decades, advocates and activists have increasingly turned to corporations and the state for support through the non-profit, prison, and medical industrial complexes. This acceptance of...
    Resource Type:
    Masters Thesis