The use of cyclohexanone as a "derivatizing" reagent for the GC-MS detection of amphetamines and ephedrines in seizures and the urine

A GC-MS method has been developed for the detection of amphetamine, methamphetamine, and the ephedrines, in seizures and the urine, based on on-GC condensation (derivatization) with cyclohexanone. The method is simple: the dried seizure material or the urine extract was mixed with cyclohexanone and injected into the GC-MS. The method was found to be superior to the methods based on acyl and trimethylsilyl (TMS) derivatization. Unlike for the acyl and TMS derivatives, the molecular and fragment ions of the cyclohexanone condensation products (cyclohexanone derivatives) were of substantial abundance, a useful property in unambiguous compound characterization. Furthermore, the high stability of the "derivatizing" reagent, cyclohexanone, compared with acyl and TMS derivatizing reagents, is a useful property in method development. The present method has proved selective and, tentatively, sensitive enough in the following areas (where methods based on acyl and TMS derivatization, as tested in this laboratory, have failed): (a) detection of amphetamine as a metabolite of methamphetamine; (b) detection of norpseudoephedrine as a metabolite of pseudoephedrine; (c) detection of amphetamine as an impurity of methamphetamine; (d) detection of cathine (norephedrine) as a constituent of Khat leaves; and (e) differentiation of Khat use from phenylpropanolamine use.     

A Study of the Presence of Gunshot Residue in Pittsburgh Police Stations using SEM/EDS and LC‐MS/MS

Due to possible secondary transfer of gunshot residue (GSR) onto a suspect in police custody prior to sampling, a baseline must be created for the amount of GSR present. With an increase of “lead free” ammunition, testing for both gunpowder and primer GSR is relevant. Seventy samples were collected using carbon‐coated adhesive stubs from four Pittsburgh Police Stations and vehicles to investigate these locations as sources of secondary GSR contamination. These seventy samples were analyzed for primer GSR using scanning electron microscopy‐energy‐dispersive X‐ray spectrometry. One primer GSR particle was detected; no sample was classified as positive for primer GSR. These same samples were then analyzed for gunpowder GSR using liquid chromatography coupled to tandem mass spectrometry to test for akardite II, ethylcentralite, diphenylamine, N‐nitrosodiphenylamine, 2‐nitrodiphenylamine, and 4‐nitrodiphenylamine. Ethylcentralite was quantifiable in two test samples. These results suggest there is a negligible potential for secondary transfer of primer and gunpowder GSR.     

Police Personnel Affective Profiles: Differences in Perceptions of the Work Climate and Motivation

The affective profile model was used to investigate individual differences in police personnel perceptions about the working climate and its influences on motivation. The Positive Affect, Negative Affect Schedule (PANAS) was used to assign police personnel, sworn and non-sworn (N = 595), to four affective profiles: self-fulfilling, low affective, high affective, and self-destructive. The work climate was assessed using the Learning Climate Questionnaire (Management Relations and Style, Time, Autonomy and Responsibility, Team Style, Opportunities to Develop, Guidelines on How to do the Job, and Contentedness). Motivation was evaluated using a modified version (to refer specifically to the individual’s work situation) of the Situational Motivation Scale (intrinsic motivation, external regulation, identified regulation, and amotivation). Self-fulfilling individuals scored higher on all work climate dimensions compared to the other three groups. Compared to low positive affect profiles, individuals with profiles of high positive affect scored higher in intrinsic motivation and identified regulation. Self-destructive individuals scored higher in amotivation. Different aspects of the work climate were related to each motivation dimension among affective profiles. Police personnel may react to their work environment depending on their affective profile. Moreover, the extent to which the work influences police personnel’s motivation is also related to the affective profile of the individual.     

Examining the Interplay of Justice Perceptions,Motivation, and School Achievement among Secondary School Students

There is a paucity of empirical research on the social psychology of justice in educational settings. A few previous studies have predominantly focused on distributive and procedural justice concerns, and knowledge about the role of what have been called informational and interpersonal justice for school outcomes is very scarce. In the present study, data from 227 eighth- and ninth-grade students who participated in a survey study were analyzed to examine the interplay between relational justice concerns (decomposed into procedural, interpersonal, and informational justice), motivation to study, and school achievement. A comprehensive theoretically grounded multi-item measure of informational justice was developed and validated. The results showed that informational justice significantly predicts school grades, and that motivation to study fully mediates this effect. Neither procedural nor interpersonal justice was associated with school grades. The implications of these results for research and practice are discussed in detail.     

Terrorism in India as a Determinant of Terrorism in Pakistan

Terrorism in Pakistan springs from many factors such as, poverty, corruption, inequality, sham democracy, and low-level literacy; however, the effect of terrorism in India over terrorism in Pakistan remains unnoticed. This study explores the role of terrorism in India as a determinant of terrorism in Pakistan. This fangled determinant of terrorism in Pakistan forms the premise of our work. The Johansen cointegration analysis technique confirms the long-run relationship among terrorism in India and Pakistan and unemployment in Pakistan. Error correction model (ECM) resulted 55% of convergence annually. Besides, ECM verifies both short and long-run causalities. The VECM Granger and Modified Wald (MWALD) causality tests reveal that terrorism in India and unemployment in Pakistan Granger causes terrorism in Pakistan, but no reverse causality exists. The study concludes that both terrorism in India and unemployment in Pakistan results in terrorism in Pakistan. Coping with terrorism, Pakistan and India must revisit their respective roles; and simultaneously, Pakistan should address the unemployment problem—which facilitates recruitment for the terrorist organizations.     

Analyzing Data Remnant Remains on User Devices to Determine Probative Artifacts in Cloud Environment

Cloud storage service allows users to store their data online, so that they can remotely access, maintain, manage, and back up data from anywhere via the Internet. Although helpful, this storage creates a challenge to digital forensic investigators and practitioners in collecting, identifying, acquiring, and preserving evidential data. This study proposes an investigation scheme for analyzing data remnants and determining probative artifacts in a cloud environment. Using pCloud as a case study, this research collected the data remnants available on end‐user device storage following the storing, uploading, and accessing of data in the cloud storage. Data remnants are collected from several sources, including client software files, directory listing, prefetch, registry, network PCAP, browser, and memory and link files. Results demonstrate that the collected remnants data are beneficial in determining a sufficient number of artifacts about the investigated cybercrime.     

Are devaluations contractionary in emerging economies of Eastern Europe?

In most developing countries currency depreciation is said to be contractionary. This is because depreciation reduces the aggregate supply more than it increases the aggregate demand. However, emerging European economies have received no attention so far, mostly due to unavailability of data. Now that enough time-series data are available, we try to fill the gap by investigating the impact of real depreciation in effective exchange rates of Belarus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Russia, and Slovak Republic on their domestic output. We find that in the short run real depreciation is expansionary in Belarus, Latvia, Poland, and Slovak Republic; contractionary in Czech Republic, Estonia, Hungary, and Russia; and has no effect in Lithuania. In almost none of the countries, the short-run effects last into the long run.