Search results | Digital Grinnell

Title: "Were You There" - Roland Hayes (1940), essay
Description: Essay about tenor Roland Hayes (188701977) and the negro spiritual "Were You There" published in 1940 on Columbia Masterworks.
PID: grinnell:19506

Title: A Data Set of Annotated Historical Maps
Description: This data set is designed for testing the performance of optical character recognition algorithms on text in scanned historical map images. Thirty maps from the nineteenth and early twentieth centuries were chosen from the David Rumsey Map Collection (http://davidrumsey.com). Most maps are of individual states, though some are regional and one is of the entire U.S.; most feature little handwritten text. The original MrSid files are converted into uncompressed TIFF images for a manual annotation, stored in XML format. The authors gratefully acknowledge the David Rumsey Map Collection as the source of the map images, which come with the following notice: Images copyright © 2000 by Cartography Associates. Images may be reproduced or transmitted, but not for commercial use. This work is licensed under a Creative Commons [Attribution-NonCommercial-ShareAlike 3.0 Unported] license (http://creativecommons.org/licenses/by-nc-sa/3.0). By downloading any images from this site, you agree to the terms of that license.
PID: grinnell:3246

Title: A Data Set of Annotated Historical Maps
Description: This data set is designed for testing the performance of optical character recognition (OCR) algorithms on text in scanned historical map images. Thirty maps from the nineteenth and early twentieth centuries (1866–1927) were chosen from nine atlases in the David Rumsey Map Collection. Most maps are of individual states, though some are regional and one is of the entire U.S.; most are manually typeset, with occasional handwritten text. Each place name and many other textual items are annotated with the baseline, bounds, character heights, and ground truth text transcriptions. Several maps also feature USGS GNIS Feature ID tags for labeled items. Java code for processing is provided with the text-based XML annotations, alongside the original, compressed MrSID images and uncompressed TIFF images. We gratefully acknowledge the David Rumsey Map Collection as the source of the map images, which come with the following notice: "Images copyright 2000 by Cartography Associates. Images may be reproduced or transmitted, but not for commercial use. This work is licensed under a Creative Commons [Attribution-NonCommercial-ShareAlike 3.0 Unported] license. By downloading any images from this site, you agree to the terms of that license." The remaining (textual and data) material is hereby licensed CC-BY-NC-SA 4.0 International; the code incorporated is GPL v3.0 (the license is incorporated in the tar file).
PID: grinnell:19349

Title: A Discriminative Semi-Markov Model for Robust Scene Text Recognition
Description: 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.
PID: grinnell:6266

Title: A Mozart Celebration
Description: Program for the faculty recital on November 30, 2006.
PID: grinnell:3597

Title: A Role for Ecology in the Evolution of Colour Variation and Sexual Dimorphism in Hawaiian Damselfiles
Description: The hypothesis that ecological differences play a role in the evolution of body colour variation within and between sexes in a radiation of endemic Hawaiian damselﬂies is tested.
PID: grinnell:23042

Title: A Simple Experiment for Discussion of Quantum Interference and Which-Way Measurement
Description: Motivated by a recent experiment involving which-way measurement in atom interference, we developed a completely analogous experiment using visible light. This simple experiment, easily accessible to undergraduate students and the resources of undergraduate departments, facilitates examination of the key elements of which-way measurement, quantum erasure and related mysteries of quantum measurement. The experiment utilizes a Mach-Zehnder interferometer, and visually demonstrates the loss of interference fringes when a which-way measurement is imposed, and the restoration of that pattern when the which-way information is destroyed. This device is also sensitive enough to observe interference fringes arising from single photons. At a level accessible to undergraduates, we present simple analyses of the interference appropriate for the coherent classical field limit, and the single photon limit. We briefly mention related issues of the nature of the photon, pointing to some useful references.
PID: grinnell:47

Title: A Two-Sector Effort-Regulation Model with Implications for Wage Developments of the 1980s
Description: A simple two-sector effort-regulation model, which assumes that the cost of job loss responds to labor's bargaining power and which acknowledges influences of institutional change, import penetration and shifting employment, can account for the declining real wages for non-supervisory workers in goods sector industries in the 1980s.
PID: grinnell:11678

Title: ACM Works of Dr. Henry M. Walker
Description: 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.
PID: grinnell:10010

Title: Academic Resource Centers: an Umbrella or an ARC? Working together strategically across administrative areas
Description: The Academic Resource Centers (ARC) is an evolving network of professionals from various offices and departments across the Grinnell College campus. As an informal affinity group, the ARC does not exist on the college’s organizational chart, nor does it have a budget. Members of ARC fluidly collaborate to support faculty and student fluency with cross-disciplinary skills that support teaching and learning in the liberal arts.
PID: grinnell:3424