British Saint Play Records

A list of the saint plays and pageants of medieval Britain compiled by Clifford Davidson. This reprint was created in 2014 for ScholarWorks at WMU, with corrections to the formatting of the original index, which appears to have been compiled in 2002

Francis Quarles and Jesuit Images: Some Observations

An otherwise unpublished study of Francis Quarles\u27s Emblemes

00 Preface

A preface to a collection of fourteen essays, most reprinted, with or without revisions, from the EDAM Newsletter or Early Drama, Art, and Music Review plus three newly written for this context

Iconography: A Checklist of Some Useful Sources for Scholars and Students of Medieval Art and Drama

A classified bibliography of scholarship on medieval drama, art, and music compiled by Clifford Davidson in 2002. This reprint was created in 2014 for ScholarWorks at WMU, with some corrections to the content and the formatting of the 2002 version

The Coventry Mysteries and Shakespeare\u27s Histories

This study is a revision of a paper read at the Shakespeare Institute at Wheaton College and subsequently published in Shakespeare\u27s Second Tetralogy: Some Christian Features, edited by Beatrice Batson (West Cornwall, CT: Locust Hill Press, 1989), 3-25

Unitary Embedding for Data Hiding with the SVD

Steganography is the study of data hiding for the purpose of covert communication. A secret message is inserted into a cover file so that the very existence of the message is not apparent. Most current steganography algorithms insert data in the spatial or transform domains; common transforms include the discrete cosine transform, the discrete Fourier transform, and discrete wavelet transform. In this paper, we present a data-hiding algorithm that exploits a decomposition representation of the data instead of a frequency-based transformation of the data. The decomposition transform used is the singular value decomposition (SVD). The SVD of a matrix A is a decomposition A = USV T in which S is a nonnegative diagonal matrix and U and V are orthogonal matrices. We show how to use the orthogonal matrices in the SVD as a vessel in which to embed information. Several challenges were presented in order to accomplish this, and we give effective solutions to these problems. Preliminary results show that information-hiding using the SVD can be just as effective as using transform-based techniques. Furthermore, different problems arise when using the SVD than using a transform-based technique. We have applied the SVD to image data, but the technique can be formulated for other data types such as audio and video

The Early Drama, Art, and Music Project: Publications 1977-2002

A bibliography of publications of the Early Drama, Art, and Music project at Western Michigan University, originally compiled by Timothy Christiansen and updated in 2002 by Clifford Davidson. This digital reprint was created in 2014 for ScholarWorks at WMU, with an addendum, an update, and a few corrections to the formatting of the 2002 publication

An Artificial Neural Network for Wavelet Steganalysis

Hiding messages in image data, called steganography, is used for both legal and illicit purposes. The detection of hidden messages in image data stored on websites and computers, called steganalysis, is of prime importance to cyber forensics personnel. Automating the detection of hidden messages is a requirement, since the shear amount of image data stored on computers or websites makes it impossible for a person to investigate each image separately. This paper describes research on a prototype software system that automatically classifies an image as having hidden information or not, using a sophisticated artificial neural network (ANN) system. An ANN software package, the ISU ACL NetWorks Toolkit, is trained on a selection of image features that distinguish between stego and nonstego images. The novelty of this ANN is that it is a blind classifier that gives more accurate results than previous systems. It can detect messages hidden using a variety of different types of embedding algorithms. A Graphical User Interface (GUI) combines the ANN, feature selection, and embedding algorithms into a prototype software package that is not currently available to the cyber forensics community

York Art: A Subject List of Extant and Lost Art

A list, classified by subject, of extant and lost art from pre-Reformation York originally compiled by Clifford Davidson and David E. O\u27Connor in 1978 and updated by Clifford Davidson, apparently in 2003. This digital reprint was created in 2014 for ScholarWorks at WMU