Effect of noise factors in energy management of series plug-in hybrid electric vehicles

It has been demonstrated that charge depletion (CD) energy management strategies are more efficient choices for energy management of plug-in hybrid electric vehicles (PHEVs). The knowledge of drive cycle as a priori can improve the performance of CD energy management in PHEVs. However, there are many noise factors which affect both drivetrain power demand and vehicle performance even in identical drive cycles. In this research, the effect of each noise factor is investigated by introducing the concept of power cycle instead of drive cycle for a journey. Based on the nature of the noise factors, a practical solution for developing a power-cycle library is introduced. Investigating the predicted power cycle, an energy management strategy is developed which considers the influence of temperature noise factor on engine performance. The effect of different environmental and geographic conditions, driver behavior, aging of battery and other components are considered. Simulation results for a modelled series PHEV similar to GM Volt show that the suggested energy management strategy based on the driver power cycle library improves both vehicle fuel economy and battery health by reducing battery load and temperature.

Professionals' perceptions of a new model of sexual assault investigation adopted by Victoria Police

This article presents a qualitative evaluation of a new method of operation for sexual assault investigation developed by Victoria Police. The model is characterised by two core components: the establishment of specialist teams of investigators responsible for investigation and victim support; and the establishment of service sites, referred to as 'Multidisciplinary Centres', where all key services are located in a single building separate from police stations. The research approach consisted of in-depth interviews with 90 stakeholders (police, counsellors, medical officers, child protection workers and prosecutors). Collectively, these interviews revealed strong, unanimous support for the ideologies that underpinned the new reforms. Reported outcomes included the following: improved collaboration; increased victim satisfaction, referrals between professionals and reporting rates; reduced response and investigation times; better quality briefs; and higher prosecution and conviction rates. These findings, along with the stakeholders' suggestions for further improvements, are discussed.

Intelligent energy management for plug-in hybrid electric vehicles : the role of ITS infrastructure in vehicle electrification

The desire to reduce carbon emissions due to transportation sources has led over the past decade to the development of new propulsion technologies, focused on vehicle electrification (including hybrid, plug-in hybrid and battery electric vehicles). These propulsion technologies, along with advances in telecommunication and computing power, have the potential of making passenger and commercial vehicles more energy efficient and environment friendly. In particular, energy management algorithms are an integral part of plug-in vehicles and are very important for achieving the performance benefits. The optimal performance of energy management algorithms depends strongly on the ability to forecast energy demand from the vehicle. Information available about environment (temperature, humidity, wind, road grade, etc.) and traffic (traffic density, traffic lights, etc.), is very important in operating a vehicle at optimal efficiency. This article outlines some current technologies that can help achieving this optimum efficiency goal. In addition to information available from telematic and geographical information systems, knowledge of projected vehicle charging demand on the power grid is necessary to build an intelligent energy management controller for future plug-in hybrid and electric vehicles. The impact of charging millions of vehicles from the power grid could be significant, in the form of increased loading of power plants, transmission and distribution lines, emissions and economics (information are given and discussed for the US case). Therefore, this effect should be considered in an intelligent way by controlling/scheduling the charging through a communication based distributed control.

Social media in disaster response : Queensland Police Service - public engagement during the 2011 floods

Social Media, particularly Microblogging services, are now being adopted as an additional tool for emergency service agencies to be able to interact with the community at all stages of a disaster. Unfortunately, no standard framework for Social Media adoption for disaster management exists and emergency service agencies are adopting Social Media in an ad-hoc fashion. This paper seeks to provide a general understanding of how Social Media is being used by emergency service agencies during disasters, to better understand how we might develop a standardised framework of adoption. In this study of the 2010/11 Queensland Flood event, Facebook broadcast messages from the Queensland Police Service to the general public, were analysed by genre. Findings show that these Microblogging activities were mostly about information distribution and warning broadcasts and that the strength of Social Media for two-way communication and collaboration with the general public, was under-utilised during this event.

Glass/carbon fibre hybrid composite laminates for structural applications in automotive vehicles

Light-weight structure is one of the keys to improve the fuel efficiency and reduce the environmental buden of transport vehicles (automotive and rail). While fibreglass composites have been increasingly used to replace steel in automotive industry, the adoption rate for carbon fibre composites which are much lighter, stronger and stiffere than glass fibre composites, remains low. The main reason is the high cost of carbon fibres. To further reduce vehicle weight without excessive cost increase, one technique is to incorporate carbon fibre reinforcement into glass fibre composites and innovative design by selectively reinforcing along the main load path. Glass/carbon woven fabrics with epoxy resin matrix were utilised for preparing hybrid composite laminates. The in-plane mechanical properties such as tensile and three-point-bending flexural properties were investigated for laminates with different carbon fibre volume and lay-up scheme. It is shown that hybrid composite laminates with 50% carbon fibre reinforcement provide the best flexural properties when the carbon layers are at the exterior, while the alternating carbon/glass lay-up provides the highest compressive strength.

Victims' perceptions of a new model of sexual assault investigation adopted by Victoria Police

This paper evaluates a method of operation for sexual assault investigation recently developed by Victoria Police (Australia). The model (which is new to Victoria) is characterised by two core components: the establishment of specialist teams of investigators (responsible for investigation and victim support) and service sites referred to as ‘Multidisciplinary Centres’ where all key services are provided to victims in a single location separate from police stations. The approach consisted of in-depth interviews with 25 victims of sexual assault aged between 15 and 54 years. The overriding theme to arise from the interviews was the importance to victims of being treated with dignity and respect; six elements were highlighted by victims as assisting this. These elements are presented along with evidence to demonstrate that the police response to victims has become more victim-centred under the new model of service delivery.

Moving right along: what powers do police have to 'move-on' protestors?

When police removed a young woman’s “tent dress” this week at the Occupy Melbourne encampment, it was yet another controversial interaction between protesters and authorities.

Evaluating police interviewing practices with suspects in child-sexual abuse cases

This article examined adherence to current best practice recommendations for police interviewing of individuals suspected of committing child-sexual offences. We analysed 81 police records of interviews (electronically recorded and then transcribed) with suspects in child-sexual abuse cases in England and Australia. Overall we found areas of skilled practice, indicating that police interviewing in Australia and England is in a far better place than 20 years ago. However, this study also demonstrated that there is still a gap between the recommended guidelines for interviewing and what actually happens in practice. Specifically, limitations were found in the following areas: transparency of the interview process; introduction of allegations; disclosure of evidence; questioning techniques; and the interviewing approach or manner adopted. The practical implications of these findings are discussed.

An examination of police officers' beliefs about how children report abuse

The aim of this study was to examine police officers’ beliefs about how children report abuse. Fifty-two officers read transcripts of nine interviews, which were conducted with actual children or adults playing the role of the child witness. Officers indicated whether they thought the interviews were with an actual child and justified their decisions. In-depth interviews were conducted to determine the reasons behind their decisions. Overall, officers’ decisions were no better than chance. When making these decisions, officers focused on three areas: whether they considered the child's language to be age-appropriate, whether they thought that the content of the statement was plausible, and whether they thought that the child had acted in a manner consistent with recollecting a traumatic event. The findings suggest that the characteristics officers rely on when evaluating children's statements of abuse are not reliable indicators. They suggest that officers’ beliefs about these statements need to be challenged during training to reduce the effects of those beliefs on their later decisions.

Improving police officers' perceptions of sexual offending through intensive training

We examined whether specialist police training on the dynamics of sexual offending can modify officers’ victim-blaming attitudes and negative perceptions regarding likely case authorization. The sample included 77 Australian police officers specialising in sexual assault investigation. The training, delivered face to face over 4 weeks, included focus on identifying elements of grooming in offending relationships and how these elements can be elicited from victims and suspects within a narrative interviewing framework. Officers’ perceptions of cases were assessed immediately pre- and posttraining using a series of case scenarios. For each scenario, officers rated (on a 10-point Likert-type scale) their confidence that the case should be authorised to proceed to prosecution and the responsibility attributable to the victim. For each case, officers also listed up to 5 factors to justify their case authorization decision. Overall, confidence in case authorization increased from pre- to posttraining, whilst perception of victim “responsibility” decreased. The pattern of results, including the qualitative evidence to justify officers’ decisions, support that the attitude change was due to greater understanding of the dynamics of sexual offending. The implications for police trainers, and directions for future research, are discussed.