Evaluation of canine training aids containment for homemade explosive and components by headspace analysis and canine testing

While canines are most commonly trained to detect traditional explosives, such as nitroaromatics and smokeless powders, homemade explosives (HMEs), such as fuel–oxidizer mixtures, are arguably a greater threat. As such, it is imperative that canines are sufficiently trained in the detection of such HMEs. The training aid delivery device (TADD) is a primary containment device that has been used to house HMEs and HME components for canine detection training purposes. This research assesses the odor release from HME components, ammonium nitrate (AN), urea nitrate (UN), and potassium chlorate (PC), housed in TADDs. Canine odor recognition tests (ORTs) were used with analytical data to determine the detectability of TADDs containing AN, UN, or PC. Headspace analysis by gas chromatography/mass spectrometry (GC/MS) with solid-phase microextraction (SPME) or online cryotrapping were used to measure ammonia or chlorine, as well as other unwanted odorants, emanating from bulk AN, UN, and PC in TADDs over 28 weeks. The analytical data showed variation in the amount of ammonia and chlorine over time, with ammonia from AN and UN decreasing slowly over time and the abundance of chlorine from PC TADDs dependent on the frequency of exposure to ambient air. Even with these variations in odor abundance, canines previously trained to detect bulk explosive HME components were able to detect all three targets in glass and plastic TADDs for at least 18 months after loading. Detection proficiency ranged from 64% to 100% and was not found to be dependent on either age of material.     

Christian Nationalism and Political Violence: Victimhood,Racial Identity,Conspiracy, and Support for the Capitol Attacks

Political Behavior - What explains popular support for political violence in the contemporary United States, particularly the anti-institutional mob that attacked the U.S. Capitol in January 2021?...     

Simple Bayesian Inference for Qualitative Political Research

In political science and related disciplines in the social andbehavioral sciences, there exists an unfortunate de facto dividebetween qualitative and quantitative empirical research. Sometimesthis divide is purely a function of training and disciplinarysocialization, but often it reflects a valid dispute over thephilosophical foundations of inquiry. I argue here that theBayesian approach to quantitative empirical modeling is an amenablestarting point for building a rapprochement between qualitativeand quantitative research, and I introduce as an example a straightforwardmodel that allows for the Bayesian estimation of the differencebetween means of very small samples with unknown and possiblyunequal variances. I then extend this approach to consider nonnormalvariates, informative priors, and a multivariate test of thedifference of means useful for the researcher who is interestedin determining whether two small samples are different on severaldimensions simultaneously.     

Lebron v. Gottlieb Memorial Hospital: capping medical practice reform in Illinois

On February 4, 2010 the Illinois Supreme Court struck down Illinois' medical practice reform bill, P.A. 94-677, when it decided Lebron v. Gottlieb Memorial Hospital. Although the court only considered the unconstitutionality of the cap on non-economic damages contained in that bill, an inseverability provision resulted in the invalidation of all of its provisions. The end result of the Lebron decision extends much further than the striking of the cap on non-economic damages. It affects such areas as medical liability insurance law, physician discipline, public disclosure of information, the admissibility of physician statements into evidence, and expert witness standards. The Lebron holding has raised a significant obstacle to the implementation of a wide range of legislative measures intended to improve both the delivery and quality of healthcare services in Illinois. This article explains the impact of Lebron in these collateral, but important, areas of the law.