Forensic analysis of explosives using isotope ratio mass spectrometry (IRMS) — Preliminary study on TATP and PETN

The application of isotopic techniques to investigations requiring the provision of evidence to a Court is limited. The objective of this research was to investigate the application of light stable isotopes and isotope ratio mass spectrometry (IRMS) to solve complex forensic cases by providing a level of discrimination not achievable utilising traditional forensic techniques.Due to the current threat of organic peroxide explosives, such as triacetone triperoxide (TATP), research was undertaken to determine the potential of IRMS to differentiate samples of TATP that had been manufactured utilising different starting materials and/or manufacturing processes. In addition, due to the prevalence of pentaerythritoltetranitrate (PETN) in detonators, detonating cord, and boosters, the potential of the IRMS technique to differentiate PETN samples from different sources was also investigated.Carbon isotope values were measured in fourteen TATP samples, with three definite groups appearing in the initial sample set based on the carbon data alone. Four additional TATP samples (in a second set of samples) were distinguishable utilising the carbon and hydrogen isotopic compositions individually, and also in combination with the oxygen isotope values. The 3D plot of the carbon, oxygen and hydrogen data demonstrated the clear discrimination of the four samples of TATP. The carbon and nitrogen isotope values measured from fifteen PETN samples, allowed samples from different sources to be readily discriminated.This paper demonstrates the successful application of IRMS to the analysis of explosives of forensic interest to assist in discriminating samples from different sources. This research represents a preliminary evaluation of the IRMS technique for the measurement of stable isotope values in TATP and PETN samples, and supports the dedication of resources for a full evaluation of this application in order to achieve Court reportable IRMS results.     

Forensic analysis of explosives using isotope ratio mass spectrometry (IRMS) — Discrimination of ammonium nitrate sources

An evaluation was undertaken to determine if isotope ratio mass spectrometry (IRMS) could assist in the investigation of complex forensic cases by providing a level of discrimination not achievable utilising traditional forensic techniques. The focus of the research was on ammonium nitrate (AN), a common oxidiser used in improvised explosive mixtures.The potential value of IRMS to attribute Australian AN samples to the manufacturing source was demonstrated through the development of a preliminary AN classification scheme based on nitrogen isotopes. Although the discrimination utilising nitrogen isotopes alone was limited and only relevant to samples from the three Australian manufacturers during the evaluated time period, the classification scheme has potential as an investigative aid.Combining oxygen and hydrogen stable isotope values permitted the differentiation of AN prills from three different Australian manufacturers. Samples from five different overseas sources could be differentiated utilising a combination of the nitrogen, oxygen and hydrogen isotope values. Limited differentiation between Australian and overseas prills was achieved for the samples analysed.The comparison of nitrogen isotope values from intact AN prill samples with those from post-blast AN prill residues highlighted that the nitrogen isotopic composition of the prills was not maintained post-blast; hence, limiting the technique to analysis of un-reacted explosive material.     

The Internal Structure of the Child Depression Inventory in Russian and UK Schoolchildren

The internal structure of a self-report rating scale for depressed mood for schoolchildren—the Child Depression Inventory (CDI)—was examined in both a Russian and a UK sample. The internal reliability and consistency of the scale was high in both samples, and factor analysis revealed that the internal structure of depressed mood was similar in both samples, and further that it was also similar for boys and girls across the two countries. The results support the use of the CDI to measure depressed mood in research with non-Western samples.     

Vote early,vote often? Tele–democracy in European cities

This paper presents the detailed results of an empirical survey on tele–democracy in 31 European cities covering 14 states. It shows that progressive city–administrations in Europe are early adopters of tele–democracy with a diffusion rate of 72 per cent. Analysis of the survey results illustrates that cities are using tele–democracy to improve service access and the quality of services. This research shows that electronic or Internet voting is a priority for only a minority of cities. The paper suggests a typology of tele–democracy and makes wide–ranging policy suggestions. In the debate over whether information and communications technologies will have a beneficial or detrimental effect on the quality and legitimacy of local government, this paper takes an optimistic stance based on the evidence of the survey.     

美国工商界道德意识面面观

调查显示,美国有相当数量的工商界人士在本人的道德标准与企业组织要求之间进退两难。文章以准确的数据反映了美国社会工商界道德观念和行为的现状,并根据心理学家劳伦斯·科尔勃格的道德发展理论分析了经理人员不良行为产生的原因。文章分析了美国宇宙飞船“挑战者”号的失事这一案例,提出了现有的伦理道德理论和标准能否恰当地解决新技术、新形式组织和新的社会制度带来的责任问题。     

Mediation and Restorative Justice in Belgium

In this article we present, discuss and try to evaluate initiatives which were recently introduced into the Belgian criminal justice system, aimed at the development of creative answers to crime that avoid the use of traditional prison sentences. We decided to focus this analysis on the practice of mediation as it is actually considered the most innovative approach to the crime problem. Mediation as a problem-solving intervention has to be considered in direct relation to the discussion of the purpose of the criminal justice system. By putting the emphasis on the dialogue between the victim and the offender, a common solution is worked out with the help of a mediator. In this way reparation, redress and sometimes even reconciliation become core values of the penal action.