Questioned Documents in Police Work

Questioned Electronic Documents : Empirical Studies in Authorship Attribution

Forensic analysis of questioned electronic documents is very difficult, because the nature of the documents eliminates many kinds of informative differences. Recent work in authorship attribution demonstrates the practicality of analyzing documents based on authorial style, but the state of the art is confusing. Analyses are difficult to apply, little is known about type or rate of errors, and ...

Examination of papers in questioned documents: differentiation by chemical tests.

Quest for Quality Training in Police Work

Programming Police Enforcement in Highway Work Zones

Due to the aging U.S. highway system and the frequent presence of work zones, highway work zone safety is garnering increasing attention. Police enforcement is sometimes used by U.S. transportation agencies for safety improvement in work zones. The important question that must be answered by those responsible for programming police enforcement in work zones is: where, when and how to enforce? T...

The use of laser desorption/ionization mass spectrometry in the analysis of inks in questioned documents.

Determination of the age of a handwritten or ink printed questioned document can be an important consideration in forensic cases. Most often the age of a document is determined by the chemical behavior of the dyes that make up the ink. Exposure of the dyes to environmental factors such as oxygen and ultraviolet or visible light cause them to degrade. Often this degradation can be correlated to ...