Artificial formation forces for stable aggregation of multi-agent system

This paper introduces, a robust and stable algorithm based on artificial formation forces, for multi-agent system (MAS) aggregation in 2D space. The MAS model with artificial forces; consists of inter-member collision avoidance element, formation generation element and a velocity based damping element; is analysed for stability and convergence. Computer simulations are used to illustrate stability and convergence, and to demonstrate effectiveness of the algorithm.

What makes a good investigative interviewer of children? A comparison of police officers' and experts; perceptions

Purpose – The purpose of this paper is to examine police officers’ perceptions about their role in interviewing children, and to compare these perceptions with those of child eyewitness memory experts.

Design/methodology/approach – A diverse sample of 23 police officers (from three states of Australia) individually participated in in-depth interviews where they were asked to define what makes a good interviewer in the area of child abuse investigation.

Findings – Irrespective of the background of the officers, the important role of interviewers’ personal attributes was emphasised (e.g. having a relaxed, empathetic, warm nature). Such personal attributes were more prominent in the participants’ descriptions than knowledge of legislation and children’s
development, prior job experience, and interviewing techniques.

Research limitations/implications – The paper shows that while child eyewitness memory experts acknowledge the importance of establishing a bond of mutual trust between the interviewer and the child, the importance of utilising an open-ended questioning style for enhancing rapport, and
for eliciting a detailed and accurate account of abuse cannot be overstated. The possible reasons for the police officers’ emphasis on personal qualities are discussed.

Originality/value – This paper has revealed that limitations in the competency of police officers in interviewing children is not merely a problem of “doing” (i.e. learning to ask open-ended questions),
but may also reflect ingrained attitudinal and organisational barriers.

What criteria do police officers use to measure the success of an interview with a child?

This study used a mixed-methods approach to explore the perceptions of a heterogeneous sample of 75 police interviewers regarding their performance in a mock interview with a 5-7-year-old child. Each officer recruited for this study was authorised to conduct investigative interviews with children. Specifically, we explored how the officers' perception of what makes a good interview differs depending on their background experience and their (perceived and actual) ability to adhere to best-practice interview guidelines. Overall, the officers' perceptions of what constitutes an effective interview were not entirely consistent with those held by experts in forensic interviewing. The majority of the interviewers perceived that the locus of control in the interview rested primarily with the child and/or the environmental setting. In contrast, experts tend to place the central onus of responsibility for the outcome of an interview on the skill of the interviewer in using open-ended questions. Several possible explanations for, and the implications of, these findings are discussed.

Public satisfaction with police : using procedural justice to improve police legitimacy

Policing research and theory emphasises the importance of supportive relationships between police and the communities they serve in increasing police effectiveness in reducing crime and disorder. A key reason people support police is that they view police as legitimate. The existing research literature, primarily from the United States, indicates that the most important factor in public assessments of police legitimacy is procedural justice. The present study is the first in an Australian jurisdiction to examine the effect of procedural justice and police legitimacy on public satisfaction with police. Using responses to a large postal survey (n = 2611), findings show that people who believe police use procedural justice when they exercise their authority are more likely to view police as legitimate, and in turn are more satisfied with police services. This study differs to US-based research in the greater importance of people's evaluations of instrumental factors in judgments of police legitimacy. The findings are important as they confirm that people's assessments of fair and effective policing in Australia will be enhanced by policing strategies that emphasise the use of procedural justice in encounters with the public.

The impact of a police crackdown on a street drug scene : evidence from the street

This article documents the impact of a police crackdown on a street heroin market in a suburb of Melbourne, Australia, as perceived by individuals involved in the market. While our data suggest that ‘Operation Clean Heart’ achieved its objective of reducing the visible aspects of this street drug scene, they also imply that the drug market rapidly adapted to its new conditions and that the impact of the operation was essentially superficial and temporary. In addition, we contend that the operation had numerous (unintended) negative consequences, some of which are potentially harmful to public health. Negative outcomes implied by our data included the partial displacement of the drug scene to nearby metropolitan areas; the discouragement of safe injecting practice and safe needle and syringe disposal; and more frequent occurrences of violence and fraud. These outcomes may outweigh the perceived positive impacts, which were achieved at significant public expense. We conclude that police crackdowns are inappropriate responses to illicit drug problems; instead, in line with longstanding Australian policy, approaches which incorporate and balance demand reduction, supply reduction and harm reduction principles should be followed.

A guide to interviewing children : essential skills for counsellors, police, lawyers and social workers

This book has been written by two people who really understand children. [They show how to] create opportunities to reduce the trauma of the interview and significantly improve the quality of the information obtained. Chief Constable A.J. Butler Gloucestershire Constabulary A few years ago, a Chief Justice said that it was unnecessary to educate lawyers and judges in the techniques of interviewing children because it was 'just common sense'. The authors show that successful interviewing requires much more than 'common sense'. Freda Briggs, Professor of Child Development, University of South Australia...an excellent book for students and professionals in forensic psychology, policing and social work.Helen Westcott, PhD, The Open UniversityIt is critical that children are interviewed properly in cases of suspected abuse or where the children may be witnesses to or victims of a crime. Poor questioning can upset the child further and contaminate evidence that may be needed in court. Interviewing Children is a practical guide to interviewing techniques for a range of professionals including welfare workers, psychologists, schoolteachers and counsellors, police officers and lawyers. Step by step, it outlines the key stages of an interview, and how to respond to the child's needs during an interview. It explains how to deal with children of different ages and from different backgrounds, and also how to work with their parents. Particular attention is paid to the sensitive issue of sexual abuse, and the problems created by multiple interviews.Clare Wilson lectures in the Department of Psychology at the University of Sydney. Martine Powell lectures in the School of Psychology at Deakin University. Both have trained police officers, social workers and legal professionals in interviewing techniques in Australia and the UK.------------------Full quotes to go on half-title page:This book has been written by two people who really understand children. In passing on their knowledge to professionals who engage with children in the interview room, they create opportunities to reduce the trauma of the interview and significantly improve the quality of the information obtained. Writing in a clear and fresh style, the authors have produced a book which is valuable as a point of reference, a day to day tool and as a training aid to develop skills.Chief Constable A.J. Butler Gloucestershire ConstabularyThis book should be read by all professionals who work with children and could findthemselves receiving disclosures of abuse. It is practical, easy to read and full of examples and hints. It should be a compulsory text for social work studen

'Marvin the Mouse'; can he assist police to elicit evidence from young children?

This study investigated the usefulness of a computer program designed to assess young children's understanding of words that may be relevant to an investigative interview about assault. Forty-one police officers conducted two interviews with five- to six-year-old children (one was conducted with the program and one without). The program's effectiveness was based on the interviewers' ratings of the usefulness of the program as well as three independent indices of interviewer-child rapport. Overall, the police officers perceived the program to be an extremely useful pre-interview assessment. However, the program had little impact on the officers' style of questioning and the nature of the children's responses. The implications of these findings are discussed.

Dry your eyes princess : an analysis of gender and 'other' based discources in police organisations

This paper examines the literature relevant to an analysis of gender and discourse in police organisations with a view to testing it through research. Much of the literature on policing can be divided into four key topic areas: the features and construction of police culture; women’s integration into policing; organisational structures and styles of police leadership; and debates about the nature of police work. An examination of the literature has revealed a deficiency of research in discourses within policing and in particular, the impact of discourses on gender and police training. Assumptions underpinning the research project and supported by literature include: formal and informal structures and practices within organisations produce and reproduce gender relations; power, gender relations and masculinity are characteristics of police culture; discourses are products and resources of interactions which establish particular truths; and police organisations have been slow to respond to anti-discrimination legislation and to integrate women into police services. Critical to any analysis of culture, power, gender, discourses, difference, and subjectification is the dynamic and complex nature of culture. Applying Shearing’s and Ericson’s definition of culture as ‘figurative logic’ has resonance in police organisations where symbols, rhetoric and metaphors function as vehicles for discourses.

Enslaved by market forces

The backlash against globalisation appears to have some sections of our business community very worried.

Drugs and police

Discusses the corruption-cloud hanging over the Victoria police drug squad. What does it mean for criminal investigations and trials? And, speaking more generally, what is it about the drugs-trade and the way the law deals with it - that can lead law enforcers down the wrong path?