Ph.D. Defenses

April 7

Charlene Hall (Education), “Struggling Readers' Acquisition of a Sight Vocabulary through the Use of Predictable Materials,” L. Fielding, chair; noon, N262 LC

Maria Somuano (Political Science), “The Role of NGO's in the Process of Democratization: The Case of Mexico,” W. Reisinger, chair; 2pm, 337 SH

Megan Gerhardt (Business Administration), “Does It Work for Everyone? An Examination of the Moderating Effects of Goal Orientation, Affectivity, and Situational Constraints on Self-efficacy,” M. Barrick and K. Brown, co-chairs; 3pm, W326 PBB

April 8

Stephen Carlson (Music), “A Comparative Study of the Changing Aesthetic of the Nineteenth- and Twentieth-century Piano Etude: Including the Works of Bartók, zolcom, Brahms, Chopin, Debussy, Ligeti, Liszt, and Robert Schumann,” U. Tsachor, chair; 10am, Rare Book Room, Music Library, VMB

April 9

Susan Ownby (Pharmacology), “Characterization of the Isoprenoid Shunt Utilizing Farnesol and Geranylgeraniol as Metabolic Precursors,” R. Hohl, chair; 9:30am, 2-224 BSB

Tae-Sang Lee (Education), “School-based Staff Development Needs as Perceived by Korean Elementary School Teachers and Administrators,” W. Foley, chair; 1pm, N434 LC

Nur Gunay (Pharmacy), “Structural Studies on Sulfated Carbohydrates,” R. Linhardt, chair; 1:30pm, S538 PHAR

Dong-Soo Shin (Nursing), “Residential and Care Preferences among Korean American Elders and Their Children,” T. Tripp-Reimer, chair; 3pm, 437 NB

April 10

Young Cho (Education), “The Influence of Principal's Leadership and School Climate on the Productivity of Transition System in Vocational High School,” W. Foley, chair; 1pm, N434 LC

Matthew Dean (Biology), “Interactions between Wolbachia and Drosophila simulans,” W. Ballard, chair; 1pm, 101 BCSB

April 11

Tammie Cumming (Education), “Reliability Estimation in Complex Simulation Environments,” S. Dunbar, chair; 1pm, 340B LC

April 14

Sulaiman Al-Balushi (Science Education), “Exploring Omani Pre-service Science Teachers' Imagination at the Microscopic Level of Matter in Chemistry and Their Use of the Particulate Theory of Matter in Their Explanations,” J. Wilson, chair; 1pm, 467 VAN

Laretta Henderson (Education), “Ebony Jr.! A Socio-cultural and Political Portrayal,” C. Lewis and D. MacCann, co-chairs; 1:30pm, N262 LC

April 15

Jay Beck (Film Studies), “A Quiet Revolution: Changes in American Film Sound Practices, 1967-1979,” R. Altman, chair; 1pm, 105C BCSB

Melinda Moye (Education), “The Relationship of Employee Empowerment and Commitment to the Organization to Interpersonal- and System-level Trust,” A. Henkin, chair; 2pm, N461 LC

Charuwan Thanawiroon (Pharmacy), “Chromatographic Separation and LC/MS Analysis of Heparin-derived Oligosaccharides,” R. Linhardt, chair; 2pm, S538 PHAR

April 16

Karen Milbourne (Art History), “Diplomacy in Motion: Art Pageantry and the Politics of Creativity in Barotseland,” C. Roy, chair; 8:30am, E101 AB

Kara Schmadeke (Education), “When Robbing Goes Bad: A Study of the Influences of Gender and Popular Media on the Writing Process of Fourth Graders,” K. Whitmore, chair; 9am, N262 LC

Carol Webb (Education), “The Effects of a Class Size Reduction on Elementary Student Reading Achievement in a Midwestern Urban School District,” T. Ansley and C. Wanat, co-chairs; 9am, N434 LC

Karel Janda (Economics), “Essays on Credit Contracts,” S. Williamson, chair; 10am, W326 PBB

Tsui-Hwa Lu (Education), “The Relationship of Phonological Processing (Phonological Awareness, Verbal Short-term Memory, and Rapid Naming) and Visual Short-term Memory to Reading Disabilities in Chinese Children,” J. Hendrickson, chair; 11am, N295 LC

April 17

Daniel Nicholson (Psychology), “The Development of Olivo-cerebellar Interactions: Implications for the Ontogeny of Eyeblink Conditioning,” J. Freeman, chair; 10am, 104 SLP

Rashid Al-Mahrazi (Education), “Investigating a New Modification of the Residual-based Person Fit Index and Its Relationship with Other Indices in Dichotomous Item Response Theory,” M. Kolen, chair; 1pm, 340B LC

Sara Hamilton (Immunology), “Primary and Secondary CD8iCell Responses after Listeria monocytogenes Infection or Peptide-coated Dendritic Cell Immunization,” T. Waldschmidt, chair; 1:30pm, 283 EMRB

Qingyu Li (Electrical and Computer Engineering), “Blind Source Separation and Channel Equalization,” E. Bai, chair; 1:30pm, 3111 SC

Hee-Young Kim (Art History), “Harold Rosenberg's Critique of the Modernist Aesthetic,” S. Foster and C. Adcock, co-chairs; 2pm, E101 AB

Robinson Vazquez-Ramos (Education), “A Delphi Study to Assess Content Validity for a Potential Set of Items to Evaluate Participatory Ethics in Rehabilitation Counseling,” T. Portman and V. Tarvydas, co-chairs; 2:30pm, N340 LC

Anne Schreiber (German), “The Theatrical Construction of Identity in Wilhelm Meister's Lehrjahre and Die Wahlver-wandtschaften,” W. Maierhofer, chair; 3pm, 529 PH

Benjamin Hill (Philosophy), “Studies in the Understructure: The Semiotic Basis of John Locke's Empirical Epistemology,” P. Cummins, chair; 3:30pm, 304 EPB

April 18

Shailen Joshi (Pharmacology), “Investigation of a Peripheral Visceral Non-opioid Site of Action of Kappa-opioid Receptor Agonists,” G. Gebhart, chair; 2pm, 2-322 BSB

Sankui Gou (Physics), “Linear and Nonlinear Waves in Dusty Plasmas,” A. Bhattacharjee, chair; 2:30pm, 309 VAN

David Deifell (Communication Studies), “The Student Movement of the University: The Rhetoric of the ‘Idea of a University' and Its Transformation by ‘the Student,' ” K. Farrell, chair; 3:45 pm, 209 BCSB

April 21

Daniel Lessner (Microbiology), “Molecular Characterization of Rieske Non-heme Iron Dioxygenases Involved in Nitroarene and Naphthalene Degradation,” D. Gibson, chair; 11:30am, 3-560 BSB

April 22

Laura Beane-Freeman (Epidemiology), “Arsenic Exposure, Artificial Tanning, and Melanoma in Iowa,” L. Dennis, chair; 8am, E216 GH

Jennifer Winkenwerder (Chemistry), “Physiobio- chemical Studies of Insect and Mammalian Cells Involving Laser Tweezers and Rotating Wall Vessels,” M. Arnold, chair; 8am, 323A CB

Tracy Pasieka (Microbiology), “Functional Endocytosis Motif in Varicella-zoster Glycoprotein gH Cytoplasmic Tail,” C. Grose, chair; 10am, 3-560 BSB

April 23

Anne Cushwa (Art History), “Felix Gonzales-Torres (1957-1996),” C. Adcock, chair; 8am, W34A AB

In Park (Education), “The Effects of Teacher Empowerment on Teacher Commitment and Student Achievement,” W. Foley, chair; 1pm, N434 LC

Evelena Ontiveros (Immunology), “Analysis of Mouse Hepatitis Virus, Strain JHM Neuropathogenesis Using Targeted Recombinant Technology,” M. Dailey, chair; 2pm, 283 EMRB

April 24

Jennifer Vigil (Art History), “Drawing Past, Present and Future: The Legacy of the Plains Indian Graphic Tradition in the Works of Arthur Amiotte and Francis Yellow,” C. Roy and C. Adcock, co-chairs; 8am, W34A AB

Hiran Perinpanayagam (Oral Science), “The Role of Cell Adhesion and Cbfal Expression in Osteoblasts,” G. Schneider, chair; 1pm, N443 DSB

April 25

Angela Grippo (Psychology), “Neural and Endocrine Mechanisms of Depression and Heart Disease,” A. Johnson, chair; 9am, E17 SSH

Sarah Clunis (Art History), “Readymade Diaspora: Cultural Icons Rectified and Assisted,” C. Roy, chair; 10am, W34A AB

Lise Vandervoort (Communication Studies), “Narrative and Public Policy,” S. Duck, chair; 11:30am, 105C BCSB

Francisco Velazquez (Pharmacy), “Synthetic Studies toward the Synthesis of Callipeltosides and Aurisides,” H. Olivo, chair; 1pm, S218 PHAR

Beata Sloan (Art History), “ARS NOVA in Poland: Artistic and Cultural Relations between Poland and Flanders in the Late Middle Ages,” R. Bork, chair; 1pm, W34A AB

Kevin Wu (Psychology), “Obsessive Compulsive Disorder: Relations among Obsessional Symptoms and Personality,” L. Clark, 1pm, 217 SLP

April 28

Linda Hansen (Education), “Alternative Dispute Resolution under the Individuals with Disability Education Act: A Case Study of Early Intervention Mediation,” L. Bartlett and C. Wanat, co-chairs; 10am, N434 LC

Lachlan Ross (Education), “The Effects of a Standards-based Mathematics Curriculum on Fourth and Fifth Grade Achievement in Two Midwest Cities,” W. Nibbelink, chair; 10am, N295 LC

Joy Kreider (Psychology), “Identification of the Neurological Substrates of Myoclonic Twitching and Active Sleep in Infant Rats,” M. Blumberg, chair; 12:30pm, E17 SSH

Yili Lu (Mechanical Engineering), “Phase-field Modeling of Three-dimensional Dendritic Solidification Coupled with Fluid Flow,” C. Beckermann, chair; 1:15pm, 3220 SC

Hyungshim Jang (Education), “Providing a Rationale to Engage Students in an Uninteresting Learning Activity: A Test of Multiple Models,” T. Rocklin, chair; 3pm, 350 LC

Paul Johnson (Mathematics), “Contributions to the Hidden Subgroup Problem,” P. Jorgensen, chair; 4:30pm, 105 MLH

April 29

Rebecca DeWald (Education), “A Study of a First and Second Grade District Reading Assessment and Its Relationship to Iowa Test of Basic Skills,” R. Ankenmann and W. Foley, co-chairs; 9am, N424 LC

Jonathan Lipscomb (Education), “A Validity Study of the Iowa Acceleration Scale,” S. Ehly, chair; 2:30pm, 340B LC

David Schenk (Philosophy), “Our Knowledge of Time: Tense, Indexicals, and the Phenomenology of Time,” E. Fales, chair; 3pm, 304 EPB

April 30

Cos Fi (Education), “Preservice Secondary School Mathematics Teachers' Knowledge of Trigonometry: Content Knowledge, Pedagogical Content Knowledge, and Envisioned Pedagogy,” D. Grouws, chair; noon, N295 LC

Shenggen Mao (Mechanical Engineering), “Friction-based Complementarity Models for Nonlinear Dynamic Contact Analysis of Multi-flexible Body Systems,” H-C. Wu, chair; 1:30pm, 3210 SC

Ha-Lyong Jung (Political Science), “Coercion, Resistance, and Free Trade: A Two-phased Game of the U.S. Section 301 Trade Policy,” J. Conybeare, chair; 3:30pm, 343 SH

May 1

Stephen E. Duirk (Civil and Environmental Engineering), “Mechanisms and Modeling Monochloramine Loss in the Presence of NOM and Bromide,” R. Valentine, chair; 1pm, 3501 SC

Pablo Molina Pico (Chemistry), “A Computational Characterization of Hydrogen Bonding in Serine Proteases,” J. Jensen, chair; 2pm, 323A CB