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Filtering by: Creator Durkina, Valentina B. Remove constraint Creator: Durkina, Valentina B. Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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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

  • Methods for cost-sensitive learning

    Creator:
    Margineantu, Dragos D.
    Abstract:
    Many approaches for achieving intelligent behavior of automated (computer) systems involve components that learn from past experience. This dissertation studies computational methods for learning from examples, for classification and for decision making, when the decisions have different non-zero costs associated with them. Many practical applications of learning algorithms, including transaction...
    Resource Type:
    Dissertation
    Full Text:
    , bagged lazy option trees (B-LOTs), that gives better probability estimates than any previous method

  • 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

  • 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

  • The source and promotion of a fashion trend

    Creator:
    Runkle, A'Leen Elizabeth
    Resource Type:
    Masters Thesis
    Full Text:
    , Valentina, Henri t3endel, and Falìenstein; others are established in salons of exclusive 5Best-Dressed

  • 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

  • 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

  • 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

  • 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

  • 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

  • Radiation effects in III-V semiconductors and heterojunction bipolar transistors

    Creator:
    Shatalov, Alexei
    Abstract:
    The electron, gamma and neutron radiation degradation of III-V semiconductors and heterojunction bipolar transistors (HBTs) is investigated in this thesis. Particular attention is paid to InP and InGaAs materials and InP/InGaAs abrupt single HBTs (SHBTs). Complete process sequences for fabrication of InP/InGaAs HBTs are developed and subsequently employed to produce...
    Resource Type:
    Dissertation
    Full Text:
    Valentina Shatalov, for their love, support, and understanding throughout the years of my studies at OSU

  • 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

  • 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

  • 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

  • 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