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Faculty Scholarship

Publications, working papers, performance programs, and other materials that document that scholarly and creative accomplishments of Grinnell College faculty and staff.

McClelland, Kent A.
In a new theory of conflict escalation, Randall Collins engages critical issues of violent conflict and presents a compellingly plausible theoretical description based on his extensive empirical research. He also sets a new challenge for sociology: explaining the time dynamics of social interaction. However, despite heavy reliance on the quantitative concept of positive feedback loops in his theory, Collins presents no mathematical specification of the dynamic relationships among his variables. This article seeks to fill that gap by offering a computational model that can parsimoniously account for many features of Collins’s theory. My model uses perceptual control theory to create an agent-based computational model of the time dynamics of conflict. With greater conceptual clarity and more wide-ranging generalizability, my alternative model opens the door to further advances in theory development by revealing dynamic aspects of conflict escalation not found in Collins’s model.

Mottl, Larissa; Conard, Henry Shoemaker, 1874-1971; Grinnell College. Center for Prairie Studies
Originally published in 1927. Updated and annotated 3rd edition by Larissa Mottl (2003)

Paulhus, Jennifer
We decompose the Jacobian variety of hyperelliptic curves up to genus 10, defined over an algebraically closed field of characteristic zero, with reduced automorphism group A 4 , S 4 , or A 5 . Among those curves is a genus 4 curve with Jacobian variety isogenous to E 2 1 × E 2 2 and a genus 5 curve with Jacobian variety isogenous to E 5 for E and E i elliptic curves. These types of results have some interesting consequences to questions of ranks of elliptic curves and ranks of their twists.

Paulhus, Jennifer; Rojas, Anita M.
We present a new technique to study Jacobian variety decompositions using subgroups of the automorphism group of the curve and the corresponding intermediate covers. In particular, this new method allows us to produce many new examples of genera for which there is a curve with completely decomposable Jacobian. These examples greatly extend the list given by Ekedahl and Serre of genera containing such curves, and provide more evidence for a positive answer to two questions they asked. Additionally, we produce new examples of families of curves, all of which have completely decomposable Jacobian varieties. These families relate to questions about special subvarieties in the moduli space of principally polarized abelian varieties.

Roberts, Tyler T., 1960-
Ever since Religious Studies emerged as a distinct area of inquiry in the 1960s and 1970s, scholars in the field have worried about its academic legitimacy. To put it a bit simplistically, they’ve worried about what constitutes the difference between teaching religion and teaching about religion. Text of the 2014 (first) Grinnell Lecture by Tyler Roberts.

Rod, Catherine; Czechowski, Leslie
Special Collections and Archives exhibit brochure. Displayed in the Iowa Room.

Rod, Catherine; Fyffe, Richard
Special Collections exhibit brochure. Coinciding with the Department of Theatre and Dance's production of Bertolt Brecht's Galileo.

Rod, Catherine; Jones, Christopher; Lenertz, Diane
Special Collections and Archives exhibit brochure.

Rod, Catherine; Vanney, Kathryn.; Glass, Rachel; Tetenbaum, Josh; Grinnell College Libraries. Special Collections
The catalog for an exhibition of the same name.

Rodrigues, Elizabeth.; Knight, R. Cecilia (Rita Cecilia); Ciota, Rebecca.
Working with faculty and staff to create digital projects requires a complex group of skills and activities. Potential collaborators often jump to the end vision without fully grasping the need for proper description & metadata. Using Google Forms & Sheets is perceived as neutral and less frightening than working in a repository platform or using other proprietary productivity software.

Rommereim, John C.; Newton, Timothy.
Program for faculty recital on September 16, 2006.

Savarese, Ralph James
This essay addresses people's emotional reactions to the word on the page using examples from the author's son's writings. His son is autistic and unable to speak.

Scheve, Edward Bejamin, 1865-1924
A manuscript score of Edward Scheve's

Schneider, Mark B.
The mathematical parallels between electrostatics and laminar fluid flow are exploited to develop a set of exercises that allow introductory physics students to discover Gauss’s Law. The primary fluid experiment involves investigating the continuity equation in two dimensions by examining the flow between two closely spaced plates. Extrapolation of the resulting two-dimensional velocity field to three dimensions reveals a radial dependence to the velocity field that is analogous to Coulomb’s Law. This analogy allows the student to predict an electric version of the continuity equation that is Gauss’s Law.

Stuhr, Rebecca; DeWild, Kris
Program for concert held in Faulconer Gallery on August 29th, 2010

A bibliography with books by Henry Conard, based on books held in the Grinnell College Archives as of 1980.

Walker, Henry M., 1947-
This image is a screen capture (taken February 4, 2015) of a web page listing several ACM (Association for Computing Machinery) copyrighted publications of Dr. Henry M. Walker, Grinnell College. Associated metadata includes the text of all pertinent links presented in Dr. Walker's page.

Weinman, J. J.
Materials to support the teaching and completion of a Mentored Advanced Project in Computer Science

Weinman, J. J.
To promote reproducibility, since 2009 all my empirical research has been cached in a data repository that captures all source code and data dependencies automatically or semi-automatically. Our principle goals are to modularize, document, and preserve all aspects of experimental data. So that others may benefit from or adapt my methods, I provide a bit of motivation and explanation here, along with the full description of the parameters and guidelines of the data repository (provided to my research students) and source code for the utilities.

Weinman, J. J.; Learned-Miller, Erik; Hanson, Allen
We present a semi-Markov model for recognizing scene text that integrates character and word segmentation with recognition. Using wavelet features, it requires only approximate location of the text baseline and font size; no binarization or prior word segmentation is necessary. Our system is aided by a lexicon, yet it also allows non-lexicon words. To facilitate inference with a large lexicon, we use an approximate Viterbi beam search. Our system performs robustly on low-resolution images of signs containing text in fonts atypical of documents.


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