Evaluation of Total Nitrite Pattern Visualization as an Improved Method for Gunshot Residue Detection and its Application to Casework Samples

Visualization of nitrite residues is essential in gunshot distance determination. Current protocols for the detection of nitrites include, among other tests, the Modified Griess Test (MGT). This method is limited as nitrite residues are unstable in the environment and limited to partially burned gunpowder. Previous research demonstrated the ability of alkaline hydrolysis to convert nitrates to nitrites, allowing visualization of unburned gunpowder particles using the MGT. This is referred to as Total Nitrite Pattern Visualization (TNV). TNV techniques were modified and a study conducted to streamline the procedure outlined in the literature to maximize the efficacy of the TNV in casework, while reducing the required time from 1 h to 5 min, and enhancing effectiveness on blood‐soiled samples. The TNV method was found to provide significant improvement in the ability to detect significant nitrite residues, without sacrificing efficiency, that would allow for the determination of the muzzle‐to‐target distance.     

The Effect of Clothing on the Rate of Decomposition and Diptera Colonization on Sus scrofa Carcasses

Twenty Sus scrofa carcasses were used to study the effect the presence of clothing had on decomposition rate and colonization locations of Diptera species; 10 unclothed control carcasses were compared to 10 clothed experimental carcasses over 58 days. Data collection occurred at regular accumulated degree day intervals; the level of decomposition as Total Body Score (TBS_surf), pattern of decomposition, and Diptera present was documented. Results indicated a statistically significant difference in the rate of decomposition, (t₄₂₇ = 2.59, p = 0.010), with unclothed carcasses decomposing faster than clothed carcasses. However, the overall decomposition rates from each carcass group are too similar to separate when applying a 95% CI, which means that, although statistically significant, from a practical forensic point of view they are not sufficiently dissimilar as to warrant the application of different formulae to estimate the postmortem interval. Further results demonstrated clothing provided blow flies with additional colonization locations.     

Mandela and excellent African leadership: Theory and lessons for practice from an appreciative thematic analysis

Nelson Mandela is highly regarded as an example of excellent leadership. Yet little has been done in communication studies to describe his leadership communication. Significantly, little has been done to locate and to theorise about his leadership style in relation to the African moral philosophy of ubuntu. the article presents an appreciative thematic analysis of how Mandela’s leadership communication practices were eulogised in tributes written in his memory in selected South African newspapers. An innovative method of appreciative thematic enquiry is used to arrive at three key themes of praise for the leadership of Mandela. Lessons for leadership are drawn out and highlighted.     

The Institute for Fiscal Studies Report: English Council Funding: What’s Happened and What’s Next?

The article reviews the recent Institute for Fiscal Studies (IfFS) report, English Council Funding: What’s Happened and What’s Next. The article provides an overview of the main themes and findings of the report which examines the consequences of a sustained period of austerity for English local government and the impact of austerity on certain key council services. The article explores what the report has to say about the way councils have responded to reductions in government funding and the strategies they have developed to protect certain frontline services. The article reviews the suggestions made in the IfFS report for changing English local government funding and finds that they reflect a form of centralist thinking which lacks a radical edge when it comes to reform.     

Making a difference? The effects of Teach For America in high school

Teach For America (TFA) selects and places graduates from the most competitive colleges as teachers in the lowest‐performing schools in the country. This paper is the first study that examines TFA effects in high school. We use rich longitudinal data from North Carolina and estimate TFA effects through cross‐subject student and school fixed effects models. We find that TFA teachers tend to have a positive effect on high school student test scores relative to non‐TFA teachers, including those who are certified in field. Such effects offset or exceed the impact of additional years of experience and are particularly strong in science. © 2011 by the Association for Public Policy Analysis and Management.     

Family formation and everyday travel in Britain since c.1850

This paper focuses on the extent to which everyday travel behaviour in Britain changes in relation to family responsibilities, and examines how this has altered over the past century and a half. It is argued that prior to the mid-twentieth century changes in the family such as increased child-care responsibilities barely influenced the modes of transport used for everyday travel, but that increasingly in the later twentieth century people adjusted their travel behaviour during the family formation phases of the life cycle. In particular, parents of young children have become more car-dependent and less likely to walk or cycle. Data are drawn from two separate projects, one that collected travel life histories from the past half-century as context for research on cycling in later life, and one that uses personal diaries to reveal everyday mobility strategies of people in the nineteenth and early twentieth centuries. It is argued that the observed changes are due not only to increased access to a wide range of different transport forms, especially the motor car, but also to changes in societal perceptions of risk and norms of travel behaviour. In conclusion, it is suggested that more awareness of past travel behaviours could aid the development and implementation of more sustainable transport policies in the UK.