Digital Repository @ Iowa State University provides open access to the full-text of many theses and dissertations completed at Iowa State University. From this page, you can either browse our theses and dissertations by academic department or by the year of completion.

Some Iowa State theses and dissertations are not eligible for open access. These may be accessible, with some restrictions, via ProQuest/UMI. On the ProQuest site, the full text of Iowa State's digital theses and dissertations can be viewed by members of the Iowa State community (current students, faculty, and staff) or individuals searching from Iowa State campus IP addresses. Others can view only the first 25 pages of a thesis or dissertation from Iowa State

Finally, some Iowa State theses and dissertations exist only in paper format. For more information, see How to find dissertations and theses through the Iowa State University Library, or contact your subject librarian.

Browse Electronic Theses and Dissertations by Academic Department

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College of Agriculture and Life Sciences
Agricultural and Biosystems Engineering
Agricultural Education and Studies
Agronomy
Animal Science
Biochemistry, Biophysics and Molecular Biology
Ecology, Evolution and Organismal Biology
Economics
Entomology
Food Science and Human Nutrition
Genetics, Development and Cell Biology
Horticulture
Natural Resource Ecology and Management
Plant Pathology and Microbiology
Sociology
Statistics

College of Business
Business

College of Design
Architecture
Art and Design
Art and Visual Culture
Community and Regional Planning
Graphic Design
Interior Design
Landscape Architecture

College of Engineering
Aerospace Engineering
Agricultural and Biosystems Engineering
Chemical and Biological Engineering
Civil, Construction and Environmental Engineering
Electrical and Computer Engineering
Industrial and Manufacturing Systems Engineering
Materials Science and Engineering
Mechanical Engineering

College of Human Sciences
Apparel, Events and Hospitality Management
Food Science and Human Nutrition
Curriculum and Instruction
Educational Leadership and Policy Studies
Human Development and Family Studies
Kinesiology
School of Education

College of Liberal Arts and Sciences
Anthropology
Biochemistry, Biophysics and Molecular Biology
Chemistry
Computer Science
Ecology, Evolution and Organismal Biology
Economics
English
Genetics, Development and Cell Biology
Greenlee School of Journalism and Communication
History
Mathematics
Physics and Astronomy
Political Science
Psychology
Sociology
Statistics

College of Veterinary Medicine
Biomedical Sciences
Veterinary Clinical Sciences
Veterinary Diagnostic and Production Animal Medicine
Veterinary Microbiology and Preventive Medicine
Veterinary Pathology

Interdisciplinary Majors and Programs
Bioinformatics and Computational Biology
Biorenewable Resources and Technology
Botany
Ecology and Evolutionary Biology
Environmental Science
Genetics
Gerontology
Human Computer Interaction
Immunobiology
Information Assurance
Information Systems
Microbiology
Molecular, Cellular and Developmental Biology
Neuroscience
Nutritional Sciences
Plant Biology
Seed Technology and Business
Sustainable Agriculture
Systems Engineering
Toxicology
Transportation

Browse Electronic Theses and Dissertations by Year of Completion

Browse by Academic Department

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Theses/Dissertations from 2015

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English as a Second Language courses: a path to college? A study of noncredit ESL students and their patterns of matriculation to community college, Anne Marie Howsare Boyens

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Development of a radioimmunoassay for screening of prion diseases, Kuei-Pin Huang

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Sol-gel based fabrication methods for photonic crystals, Yin Huang

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Three studies on applying Positive Mathematical Programming and Bayesian Analysis to model US crop supply, Michael Hudak

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Short-term scheduling of a combined natural gas and electric power system with wind energy, Dan Hu

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Exploring learner perceptions of and interaction behaviors using the Research Writing Tutor for research article Introduction section draft analysis, Sarah Rebecca Huffman

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Ribosomal frameshifting directed by a potyvirid sequence motif in diverse translation systems, Alice Y. Hui

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Dyslexic edge: designing an awareness campaign to foster wider understanding of dyslexia, Laura Anne Huisinga

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Nondestructive field assessment of flexible pavement and foundation layers, Jinhui Hu

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Phase selection and microstructure in directional solidification of glass forming Pd-Si-Cu alloys, Yang Huo

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Techno-economic, uncertainty, and optimization analysis of commodity product production from biomass fast pyrolysis and bio-oil upgrading, Wenhao Hu

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Some methods for handling missing data in surveys, Jongho Im

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Utilization of pork and pork by-products for nutritional and behavioral management of captive exotic felids, Cayla Jo Iske

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Tailoring device-scale properties in organic electronics: morphological, optical and electrode-interface related approaches, Moneim Reda Ismail

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Diagnostic studies of ion beam formation in inductively coupled plasma mass spectrometry with the collision reaction interface, Jeneé L. Jacobs

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The efficient classroom: how team-based learning and lecture video acceleration affect the learning efficiency and effectiveness of a first-year engineering course, Benjamin Paul Jacobson

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Development and application of numerical models for simulating bio-oil gasification, Arian Jafari

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Spatiotemporal visualization of unit prices of major cost items of transportation projects across Iowa using geographic information systems (GIS), Deepanshi Jain

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Forecasting obsolescence risk and product lifecycle with machine learning, Connor Patrick Jennings

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Culturing benthic foraminifera to understand the effects of changing seawater chemistry and temperature on foraminiferal shell chemistry, Deserae Jennings

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A formal language towards the unification of model checking and performance evaluation, Yaping Jing

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Examining resources and their influence on developmental health outcomes in older African Americans, Meneka Johnson

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An investigation of railroad-highway grade crossing consolidation rating in Iowa, Patrick Michael Johnson

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Women in Iran: ancient history to modern times, and back, Rahele Jomepour

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A clade-specific Arabidopsis gene connects primary metabolism and senescence, Dallas Christopher Jones

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STEM aspiration: the influence of social capital and chilly climate on female community college students, John Richard Jorstad

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Computer aided process planning for multi-axis CNC machining using feature free polygonal CAD models, Ashish Mukund Joshi

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Environmental stewardship by microalgae: air and water, Juhyon Kang

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A study of four galactic small H II regions: searching for spontaneous and sequential star formation scenarios, Sung-Ju Kang

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An MDO augmented value-based systems engineering approach to holistic design decision-making: a satellite system case study, Hanumanthrao Kannan

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Path planning and energy management of solar-powered unmanned ground vehicles, Adam Kaplan

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Agenda detector: labeling tweets with political policy agenda, Sheetal Kaul

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Investigation of AASHTOWare Pavement ME Design/Darwin-ME™ Performance Prediction Models for Iowa Pavement Analysis and Design, Orhan Kaya

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Place as a positive reflection of self, Cynthia A. Kelly

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Permeability and lateral earth pressure in granular backfill against bridge abutments, Lance David Keltner

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An automated approach to program repair with semantic code search, Yalin Ke

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Hybrid robust and stochastic optimization for closed-loop supply chain network design using accelerated Benders decomposition, Esmaeil Keyvanshokooh

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An experimental study on the near wake characteristics of a wind turbine model subjected to surge, pitch, and heave motions, Morteza Khosravi

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Architecture and place: a critical look at how they interact and influence each other through definition, creation, and representation, Elizabeth Kief

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Flex fuel polygeneration: integrating renewable natural gas, Matthew M. Kieffer

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Live load distribution factors for multi-span girder bridges with plank decking subjected to farm vehicles, Chandra Teja Kilaru

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An assessment of the factors that impact the level of success of farmers field school training in Tanzania: a descriptive study, Upendo Kalist Kimati

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Learning dispatching rules via an association rule mining approach, Dongwook Kim

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Computational design of new scintillator chemistries and defect structures, Hyung jin Kim

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What drives mergers and acquisitions in the restaurant industry?, Jewoo Kim

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Understanding the thermochemical conversion of biomass to overcome biomass recalcitrance, Kwang Ho Kim

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Sedentary lifestyle and obesity in adults, Youngwon Kim

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Essays on firm location decisions, regional development and choices under risk, Younjun Kim

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Skew propagation time, Nicole F. Kingsley

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Development of 4-H youth leadership skills: a retrospective approach with emerging adults, Ashley Nicole Kinkade

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Regulation of shoot development in maize via brassinosteroid signaling, Gokhan Kir

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Advancements in mass spectrometry for biological samples: Protein chemical cross-linking and metabolite analysis of plant tissues, Adam T. Klein

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Impacts of poultry manure application on bacteria and phosphorus in soils and drainage tile-waters, Claire Elise Klimala Hruby

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Associations between the Family Nutrition and Physical Activity screening tool and the Youth Activity Profile, Kimberly Ann Klimesh

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Dynamics and statics of polymer nanocomposite self-assembly via molecular dynamics, Christopher Davis Knorowski

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Resistant starch: implications in kidney health and vitamin D homeostasis in diabetes mellitus, Gar Yee Koh

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Sensible heat balance method to determine rates of soil freezing and thawing, Yuki Kojima

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Study of transport properties and defect density profile in nanocrystalline silicon germanium devices, Siva Konduri

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Urban fisheries investigation: development of a site selection method for central Iowa's urban ponds, Steven J. Konrady

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In-plant validation of an ethanol yield prediction equation, Megan Korte

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The complexity of infectious laryngotracheitis virus: a focus on vaccination and challenge viruses, Danielle Mae Koski

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Comparison of piglet birth weight classes, parity of the dam, number born alive and the relationship with litter variation and piglet survival until weaning, Gregory Thomas Krahn

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A characterization of health, immunity, and intestinal microbial colonization in neonatal Holstein calves fed pasteurized whole milk and challenged with Mycobacterium avium, subsp. paratuberculosis, Lucas Adam Krueger

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The grace of their breakage, Claire Elizabeth Kruesel

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Bovine digital dermatitis: natural lesion development and experimental induction, Adam C. Krull

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Integration of summer and fall cover crops in vegetable cropping systems, Raymond Albert Kruse

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Development of dielectric spectroscopic sensor for contaminant detection in a hydraulic fluid and a compressed air stream, Safal Kshetri

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Modification of egg albumen to improve thermal stability, Charlwit Kulchaiyawat

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Using speckle statistics to improve attenuation estimates for cervical assessment, Viksit Kumar

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Magic masala, Rohini Kummitha

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Socioeconomic geography of organic agriculture in the United States, 2007-2012, Hui-Ju Kuo

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Detection of sub-surface stresses in ferromagnetic materials using a new Barkhausen noise method, Orfeas Kypris

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Characterization, fabrication, and analysis of soft dielectric elastomer actuators capable of complex 3D deformation, William Lai

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Beyond alkyl transfer: synthesis of main group metal (Mg, Ca, Zn) silyl and tris(oxazolinyl)borato complexes and their stoichiometric and catalytic reactions with borane Lewis acids and carbonyls, Nicole Lynn Lampland

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How does rescuer fitness affect the quality of cardiopulmonary resuscitation?, Gabe David Lancaster

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Analysis of adaptive capacity and governance surrounding an invasive pest, the Emerald Ash Borer, in Iowa, Justin T. Landhuis

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Use of social media in undergraduate communication classes, Aimee Nichole Langager

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Local prediction and classification techniques for machine learning and data mining, Cory Lee Lanker

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Taming the hashtag: universal sentiment, SPEQ-ing the truth, and structured opinion in social media, Ian La Vie

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Humanizing education: teacher leaders influencing pedagogical change, Lindsay Paige Law

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Parametric modeling for simulation based hypersonic vehicle design, Alexander David Lee

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Innovative assessment tasks for academic English proficiency: an integrated listening-speaking task vs. a multimedia-mediated speaking task, Hye Won Lee

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A study for increasing reusable cup consumption in the coffee industry: focused on behavior change with motivation, Joongsup Lee

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Changing perceptions and the impact of culture, Sodam Lee

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Functional analysis of the propanediol utilization microcompartment shell proteins PduB and PduB' in Salmonella enterica, Brent Lehman

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Evaluation of some parameters influencing vibrothermographic crack heating, Tyler Joseph Lesthaeghe

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A content analysis on features of suspenseful commercials, Chen Liang

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Bacterial, particulate, and environmental factors driving E. coli attachment, Xiao Liang

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Confined concrete behavior in hollow columns, Xiao Liang

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Genetic factors driving attachment of bacteria to environmental particles, Chunyu Liao

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Extending the technology acceptance model: an investigation of factors affecting college students’ downloading of smartphone fitness applications, Yuting Liao

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Techno-economic and uncertainty analysis of fast pyrolysis and gasification for biofuel production, Boyan Li

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Material phase change under extreme domain confinement in laser material interaction, Chong Li

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Faculty preparedness for transition to teaching online courses in the Iowa Community College Online Consortium, David Muturia Lichoro

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Influence of corn seeding rate, soil attributes, and topographic characteristics on grain yield, yield components, and grain composition, Mark Allen Licht

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Development and assessment of visual-based training on Chinese-speaking foodservice workers in independently-owned Chinese restaurants, Dawei Li

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Effect of cryomilling on zinc sulfide effectiveness as antibacterial substance for burn wound healing, Jianqiang Li

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Three essays on crop yield, crop insurance and climate change, Lisha Li

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Development and evaluation of online pronunciation instruction for international teaching assistants’ comprehensibility, Edna de Freitas Lima

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Functional silica-encapsulated photoactive nanocrystals, Chia-Cheng Lin