Personality, behavioural and affective characteristics of hazardous drinkers

The aim of this study was to investigate the influence of appetitive and aversive motivation on hazardous drinking behaviour by drawing on Reinforcement Sensitivity Theory (RST). A between-groups design examined differences between hazardous drinkers and matched controls on self-report and behavioural appetitive and aversive motivation. The relationship between motivational processes and changes in affective states following behavioural task performance was also examined. Data from 27 hazardous drinkers (M = 21.88 years, SD = 3.29) and 27 gender and age matched controls (M = 21.85 years, SD = 4.08) were utilised. The Card Arranging Reward Responsivity Objective Test (CARROT) assessed behavioural appetitive motivation and the computerised Q-TASK provided an index of behavioural aversive motivation. Self-report appetitive and aversive motivation was measured using the Sensitivity to Punishment and Reward Questionnaire (SPSRQ). Brief scales tapping state positive and negative affect were also administered. Hazardous drinkers were significantly higher than controls on self-report but not behavioural measures of appetitive motivation. Results also indicated that hazardous drinkers reported significantly higher levels of negative affect. These data suggest that hazardous drinkers are characterised by high trait appetitive motivation and state negative affect. It was suggested that RST may provide a useful framework for understanding both the appetitive and aversive motivational processes involved in drinking behaviour.

Autonomous underwater vehicles in a hazardous non-deterministic environment

This research investigated the cooperation of multi underwater robots to perform a task. This combined engineering design, electronics and consensus control to create systems capable of achieving the task. Challenges such as underwater radio communications were researched and a simulation framework was created and tested on virtual and real systems.

A hazardous substance exposure prevention rating method for intervention needs assessment and effectiveness evaluation: the small business exposure index

Aims This paper describes the refinement and adaptation to small business of a previously developed method for systematically prioritizing needs for intervention on hazardous substance exposures in manufacturing worksites, and evaluating intervention effectiveness. Methods We developed a checklist containing six unique sets of yes/no variables organized in a 2 × 3 matrix of exposure potential versus exposure protection at three levels corresponding to a simplified hierarchy of controls: materials, processes, and human interface. Each of the six sets of indicator variables was reduced to a high/moderate/low rating. Ratings from the matrix were then combined to generate an exposure prevention 'Small Business Exposure Index' (SBEI) Summary score for each area. Reflecting the hierarchy of controls, material factors were weighted highest, followed by process, and then human interface. The checklist administered by an industrial hygienist during walk-through inspection (N = 149 manufacturing processes/areas in 25 small to medium-sized manufacturing worksites). One area or process per manufacturing department was assessed and rated. A second hygienist independently assessed 36 areas to evaluate inter-rater reliability. Results The SBEI Summary scores indicated that exposures were well controlled in the majority of areas assessed (58% with rating of 1 or 2 on a 6-point scale), that there was some room for improvement in roughly one-third of areas (31% of areas rated 3 or 4), and that roughly 10% of the areas assessed were urgently in need of intervention (rated as 5 or 6). Inter-rater reliability of EP ratings was good to excellent (e.g., for SBEI Summary scores, weighted kappa = 0.73, 95% CI 0.52–0.93). Conclusion The SBEI exposure prevention rating method is suitable for use in small/medium enterprises, has good discriminatory power and reliability, offers an inexpensive method for intervention needs assessment and effectiveness evaluation, and complements quantitative exposure assessment with an upstream prevention focus.

Occupational skill level and hazardous exposures among working Victorians

This paper examines the patterning of exposures to occupational hazards in relation to occupational skill level as a proxy for pay rate, testing the general hypothesis that exposures to occupational hazards increase in prevalence with decreasing skill level. A population-based telephone survey was conducted on a random sample of working Victorians (N = 1,101). A set of 10 indicators of exposure to occupational hazards were analysed individually and as a summary scale in multivariate regression models. A significant increasing trend in hazardous working conditions from the highest to lowest occupational skill level was observed, with those in lower skill level jobs twice as likely to be exposed as those at the highest skill level. This overall trend was driven primarily by higher exposure in the middle skill level group (technicians and skilled trades) as well as the lowest (labourers and elementary clerical), the two main bluecollar groups. Findings provided partial support for the hypothesised relationship.

Cleanup worker exposures to hazardous chemicals at a former nuclear weapons plant : piloting of an exposure surveillance system

Cleanup of former U.S. Department of Energy (DOE) nuclear weapons production facilities involves potential exposures to various hazardous chemicals. We have collaboratively developed and piloted an exposure database and surveillance system for cleanup worker hazardous chemical exposure data with a cleanup contractor at the Rocky Flats Environmental Technology Site (RFETS). A unique system feature is the incorporation of a 34-category work task-coding scheme. This report presents an overview of the data captured by this system during development and piloting from March 1995 through August 1998. All air samples collected were entered into the system. Of the 859 breathing zone samples collected, 103 unique employees and 39 unique compounds were represented. Breathing zone exposure levels were usually low (86% of breathing zone samples were below analytical limits of detection). The use of respirators and other exposure controls was high (87 and 88%, respectively). Occasional high-level excursions did occur. Detailed quantitative summaries are provided for the six most monitored compounds: asbestos, beryllium, carbon tetrachloride, chromium, lead, and methylene chloride. Task and job title data were successfully collected for most samples, and showed specific cleanup activities by pipe fitters to be the most commonly represented in the database. Importantly, these results demonstrate the feasibility of the implementation of integrated exposure database and surveillance systems by practicing industrial hygienists employed in industry as well as the preventive potential and research uses of such systems. This exposure database and surveillance system--the central features of which are applicable in any industrial work setting--has enabled one of the first systematic quantitative characterizations of DOE cleanup worker exposures to hazardous chemicals.

Alcohol management practices in community football clubs: association with risky drinking at the club and overall hazardous alcohol consumption

Across the world, it has been estimated that approximately 270 million people participate in community football clubs. However, the community sports club setting is associated with high levels of risky alcohol consumption. The study examined if sporting club alcohol management practices are associated with risky consumption of alcohol by club members while at the club, and also whether such consumption is directly and indirectly associated with club member overall hazardous alcohol consumption.