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Joanna T. Tague Tague, Joanna T. T. Tague

Joanna T. Tague
Assistant Professor
Faculty  |  History, International Studies
Fellows Hall

Jo Tague is a historian of Sub-Saharan Africa with particular interests in refugee settlement, international humanitarianism, rural development, and African independence movements. She teaches survey courses on Pre-Colonial Africa and Africa After 1800, as well as upper-level courses on Gender and Africa, Comparative African Liberation Movements, Southern Africa, and 19th and 20th Century Eastern and Central Africa.

Dr. Tague’s research explores the relationship between refugee settlement and rural development in decolonizing Africa. She is currently revising her dissertation, titled “A War to Build the Nation: Mozambican Refugees, Rural Development, and State Sovereignty in Tanzania, 1964-1975,” for publication.

Dr. Tague received her B.A. from George Washington University (1998), her M.A. from Ohio University (2003), and her M.A. and Ph.D. from the University of California, Davis (2012). Prior to joining the faculty at Denison in the fall of 2012, she taught courses at California State University, Sacramento, as well as at California State University, Chico.

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Michael S. Tangeman ’91 dr. Tangeman, Michael Stone S. Tangeman ’91

Michael S. Tangeman '91
Associate Professor & Chair (East Asian Studies)
Faculty  |  Japanese, Modern Languages, East Asian Studies
Fellows Hall
B.A., Denison University; M.A., Ph.D., Ohio State University
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Beth Tatko Tatko, Elizabeth Ann Tatko

Visiting Instructor
Faculty  |  Modern Languages, Spanish
Fellows Hall
B.A., M.A., Ohio University

My interests include second language acquisition, language pedagogy, and instructional materials development. I teach Spanish 111, 112, and 211.

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Riina Tehver Tehver, Riina Tehver

Riina Tehver
Assistant Professor
Faculty  |  Astronomy, Physics, Computational Science
F.W. Olin Science Hall
B.S., Tartu University; Ph.D., Pennsylvania State University

I came to Denison in 2010 after a postdoctoral fellowship at University of Maryland.  I enjoy teaching a broad range of courses including introductory physics, quantum mechanics, electromagnetic theory, and laboratories. I also really enjoy doing research with students.

My research field is computational biophysics. In the broadest sense, my group wants to understand how biological complexity arises from basic physical principles. Specifically, our goal is to understand how biomolecules perform their cellular functions. We use numerical analysis and computational modeling to connect protein structures via their dynamics to their operation. Proteins are responsible for most tasks that make life happen: they create motion, support cellular structures, enable chemical reactions, and so on. We study how proteins can perform these biological tasks. We are currently working on a class of proteins called motor proteins. We build theoretical and computational models that allow us to understand the connection between the structures of the proteins, their internal dynamics, and, how to connect that to their operation.

Research Keywords: 
Research Overview: 
Computational research on molecular machinery, biocomplexity, and the physics of cellular functions. Current emphasis is on chaperonins and molecular motors, studying the connection between the machines’ structure, internal dynamics, and function.


  • M. Hinczewski, R. Tehver, and D. Thirumalai, Design principles governing the motility of myosin V, PNAS 110, E4059 (2013).
  • M. Jayasinghe, P. Shrestha, X. Wu, R. Tehver, G. Stan, Weak Intra-Ring Allosteric Communications of the Archaeal Chaperonin Thermosome Revealed by Normal Mode Analysis, accepted to Biophys. J. (2012)
  • R. Tehver, D. Thirumalai, Rigor to Post-Rigor Transition in Myosin V: Link between the Dynamics and the Supporting Architecture, Structure 18, 471 (2010).
  • R. Tehver, J. Chen, D. Thirumalai. Allostery Wiring Diagrams in the Transitions that Drive the GroEL Reaction Cycle, J. Mol. Biol. 387, 390 (2009)
  • R. Tehver, D. Thirumalai. Kinetic Model for the Coupling Between Allosteric Transitions in GroEL and Substrate Protein Folding and Aggregation. J. Mol. Biol. 384, 1279 (2008)
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Jeff Thompson dr. Thompson, Jeffrey Sean Thompson

Jeff Thompson
Associate Professor, Molecular Geneticist & Chair (Biology)
Faculty  |  Biology, Computational Science
Samson Talbot Hall of Biological Science
B.A., Kalamazoo College; Ph.D., University of California, Los Angeles
Academic Positions: 
  • Associate Professor, Department of Biology at Denison University, 2009- present
  • Assistant Professor, Department of Biology at Denison University, 2003 - 2009
  • Assistant Professor, Department of Biology at Georgian Court College, Lakewood, NJ, 1998-2003
  • Adjunct Instructor, Science Division at Anne Arundel Community College, Arnold, MD, 1997-1998
  • Postdoctoral Research Fellow, Department of Medicine at The Johns Hopkins University School of Medicine, Baltimore, MD, 1994-1998
Research Keywords: 
Molecular Geneticist
Research Overview: 
Molecular genetic studies on the role of histone proteins and chromatin structure in DNA damage repair, using the yeast Saccharomyces cerevisiae as a model system.
Research Details: 

My research interests revolve around the manner in which DNA is structurally and functionally organized within the nucleus of eukaryotic cells.  Specifically, my lab studies histones, a family of highly conserved proteins that interact with DNA and other proteins to form material called chromatin.  Chromatin can be arranged in a variety of structural conformations, influenced in part by numerous post-translational modifications to the histones, which has implications for DNA accessibility and functionality.  We utilize genetic and molecular techniques to study the ways in which histones influence chromatin structure and function in the yeast Saccharomyces cerevisiae.  We are currently working on a series of projects to gain insight into the roles that specific histone modifications play in the processes by which DNA damage, caused by environmental factors such as ultraviolet radiation, is detected and repair.

Undergraduate research students play an integral role in my laboratory.  Ranging from single summer experiences to multi-year efforts culminating in senior/honors research projects, student researchers are active participants in pursuing the questions that my lab is investigating.  Students who make substantial contributions to our research have the opportunity to present their work at professional conferences and to be co-authors on published papers.  Anyone interested in pursuing research in my lab should contact me early in the fall semester prior to the year in which they are interested in doing research to discuss potential opportunities.

Current lab members:

  • Andrea Karl (since 2013)
  • Liesje Steenkiste (since 2013)

Past lab members:

  • Marguerite Strong (2013)
  • Arron Cole (2010-2013)
  • Jono Turchetta (2012-2013)
  • Dora Vines (2012-2013)
  • Tom Snee (2012)
  • Anna Boudoures (2010- 2012)
  • Jacob Pfeil (2010-2012)
  • John Snee (2010)
  • Alyssa Rossodivita (2008- 2010)
  • Megan Ansbro (2008- 2009)
  • Jon Mecoli (2007- 2009)
  • Ariel Lee (2007- 2008)
  • Tasha Strande (2007- 2008)
  • Ashley Albrecht (2006- 2007)
  • Maggie Evans (2006- 2007)
  • Andrew Keller (2005- 2006)
  • Arzu Arat (2005)
  • Lindsey Bostelman (2004- 2005)
  • Katie McHugh (2004- 2005)
  • Leigh Stone (2004- 2005)
Grants & Funding: 
  • National Institutes of Health R15 Academic Research Enhancement Award (1R15GM093849-01), 2010-2013; $317,852
  • Great Lakes Colleges Association New Directions Grant, 2010 (co-written with Jessen Havill); $3,765
  • Denison University Research Foundation Grant, 2010; $5,506
  • Denison University Research Foundation Grant, 2009; $1,474
  • Denison University Research Foundation Grant, 2006; $6,329

(principal investigator in regard to publications below; see resume for complete publication list)
* indicates undergraduate student co-author

  • Evans ME*, Bostelman LJ*, Albrecht AM*, Keller AM*, Strande NT*, and JS Thompson. 2008. UV sensitive mutations in histone H3 in Saccharomyces cerevisiae that alter specific K79 methylation states genetically act through distinct DNA repair pathways. Current Genetics. no. 53 p. 259-274 View online.
  • Bostelman LJ*, Keller AM*, Albrecht AM*, Arat A*, and JS Thompson. 2007. Methylation of histone H3 lysine-79 by Dot1p plays multiple roles in the response to UV damage in Saccharomyces cerevisiae. DNA Repair. v. 6 no. p. 383-395 View online.
  • Smith PH and JS Thompson. 2003. Has polyploidy shaped the evolution of the eukaryotic genome? A re-examination of Ohno's genome duplication hypothesis . Bios. v. 74 no. p. 110-117 View online.
  • Thompson JS, Snow ML, Giles S*, McPherson LE*, and M Grunstein. 2003. Identification of a functional domain within the essential core of histone H3 that is required for telomeric and HM silencing in Saccharomyces cerevisiae. Genetics. v. 163 no. p. 447-452 View online.
Professional Memberships: 
  • Genomics Education Partnership (since 2007)
  • Sigma Xi Scientific Research Society (since 2007)
  • Beta Beta Beta Biology Honor Society (since 1999)
  • Genetics Society of America (since 1998)
  • Phi Beta Kappa (since 1988)
Professional Service (includes Denison Service): 
  • Finance Committee (vice-chair, since 2012)
  • Phi Beta Kappa, President of Theta of Ohio Chapter (since 2007)
  • Sigma Xi Chapter member (since 2007, Vice President since 2013)
  • Faculty Development Committee (2010-2013, chair 2012-2013)
  • Anderson Scholarship Selection Committee (2007-2008, 2010)
  • Board of Trustees Student Affairs Committee (2008-2009)
  • Denison Scientific Association co-organizer (2008-2009)
  • Board of Academic Integrity (2007-2009)
  • Campus Affairs Council (2007-2009)
  • Board of Trustees Enrollment Committee (2005-2007)
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Megan Threlkeld dr. Threlkeld, Megan S. Threlkeld

Megan Threlkeld
Associate Professor
Modern US, Women's History
Faculty  |  History, Women's and Gender Studies
Fellows Hall
B.A., Lawrence University; M.A., Ph.D., University of Iowa
Megan Threlkeld joined the faculty at Denison in the fall of 2008. She regularly teaches courses on the U.S. since the Civil War, U.S. women’s history, and U.S. foreign relations. Her other teaching interests include legal history, progressivism, manifest destiny and U.S. expansion, and international feminism.
Her research focuses on U.S. women’s international activism in the first half of the twentieth century. Her book, Promoting Pan America: U.S. Women Internationalists Confront Revolutionary Mexico, is forthcoming from the University of Pennsylvania Press.
Dr. Threlkeld earned her M.A. and Ph.D. at the University of Iowa, and her B.A. at Lawrence University in Appleton, Wisconsin.
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Kate E. Tierney dr. Tierney, Kate Elizabeth E. Tierney

Assistant Professor
Faculty  |  Geosciences, Environmental Studies
F.W. Olin Science Hall
B.A., M.S., Ph.D., Ohio State University
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Ann Townsend ’85 Townsend, Ann Critchlow Townsend ’85

Ann Townsend '85
Faculty  |  English, Environmental Studies
Barney-Davis Hall
B.A., Denison University; M.A., Ph.D., Ohio State University

Ann Townsend is the author of two collections of poetry: Dime Store Erotics (1998), and The Coronary Garden (2005), and is the editor of Radiant Lyre: Essays on Lyric Poetry (2007), with David Baker. Her poetry, fiction and criticism appear in such magazines as Agni, Poetry, The Paris Review, The Nation, The Georgia Review, The Kenyon Review, The Southern Review, Witness, and many others. In 2003-2004 she received an Individual Artist's Grant in Poetry from the National Endowment for the Arts, and also won the James Dickey Prize in Poetry, sponsored by Five Points magazine.

She has published three chapbooks: Modern Love (1995), Holding Katherine (1996), co-authored with David Baker, and The Braille Woods (1997), and has given public readings of her work at the Associated Writing Programs Conference, The Poets House, Kenyon College, Ohio State University, Carnegie-Mellon University, Kent State University, Tulane University, the Bread Loaf Writers Conference, and many other workshops, universities, and bookstores around the country.

Her poems have been anthologized in: Legitimate Dangers: American Poets of the New Century (2006), The Extraordinary Tide: New Poetry By American Women (2001), American Poetry: The Next Generation (2000), Writing Poems (2000), The Bread Loaf Anthology of New American Poets (2000), Imperfect Paradise: New Young American Poets (2000), and The Pushcart Prize XX (1995)

At Denison, she teaches courses in creative writing, in twentieth century poetry and poetics, literary translation, and in the history of the lyric poem. She has also taught at the Antioch Writers Workshop, The Catskills Workshop, The Bread Loaf Writers Workshop, and is a member of the MFA faculty at Carlow University.

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Aurelie Tran Tran, Aurelie Tran

Teaching Assistant (part-time)
Faculty  |  Modern Languages
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Mary Tuominen dr. Tuominen, Mary Tuominen

Mary Tuominen
Professor & Chair (Sociology / Anthropology)
Faculty  |  Sociology / Anthropology
Blair Knapp Hall
B.A., Western Washington University; M.P.A., Seattle University; Ph.D., University of Oregon

Professor of Sociology/Anthropology Mary Tuominen received her B.A. in Education followed by her Master's in Public Administration (public policy) from Seattle University. She received her Ph.D. in Sociology from the University of Oregon. Her teaching and research interests are in the areas of gender, race, and class; care work; community-based activism; and research methodology.

My previous work as a community organizer, a public policy analyst, and a Budget Assistant to the Governor for Children and Family Services inform both my teaching and my research interests. My recent participatory action research explores the challenges of multi-racial, grassroots coalitions as tools for mobilizing child care workers – in particular the ways in which social dynamics of race and privilege create opportunities for as well as inhibit successful coalition work (see “Speaking and Organizing Across Difference: Multi-Racial Coalitions and the Grassroots Mobilization of Child Care Workers” in Feminist Formations, 2012). In a forthcoming article I use similar community-based research methods to explore the neo-liberal ideologies underlying financial literacy programs intended to aid low-income citizens (see “No Money Left to Save: Financial Literacy and the Lives of Low-Income People” co-authored and forthcoming in The Journal of Progressive Human Services).”

My research-in-progress builds on my previous care work scholarship to include narrative care work – an analysis of the ways in which caregivers make meaning of illness, death, and grief.  This work includes a Mellon Foundation Award for a project titled, “Writing Grief and Healing: Creative Nonfiction and Narrative Analysis” and an autoethnographic book manuscript currently underway and provisionally titled Strange Gifts: The Work of Death, Grief, and Healing.”

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Cynthia Turnbull Turnbull Cynthia Turnbull

Cynthia Turnbull
Faculty  |  Theatre
Theatre Arts Building - Ace Morgan Theatre
B.S., Nebraska Wesleyan University; M.F.A., University of Texas, Austin
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