A Bayesian model for ranking hazardous road sites

Summary.  Road safety has recently become a major concern in most modern societies. The identification of sites that are more dangerous than others (black spots) can help in better scheduling road safety policies. This paper proposes a methodology for ranking sites according to their level of hazard. The model is innovative in at least two respects. Firstly, it makes use of all relevant information per accident location, including the total number of accidents and the number of fatalities, as well as the number of slight and serious injuries. Secondly, the model includes the use of a cost function to rank the sites with respect to their total expected cost to society. Bayesian estimation for the model via a Markov chain Monte Carlo approach is proposed. Accident data from 519 intersections in Leuven (Belgium) are used to illustrate the methodology proposed. Furthermore, different cost functions are used to show the effect of the proposed method on the use of different costs per type of injury.     

Involvement with unions,union belief perspectives,and desires for union membership

This article addresses two theoretical problems associated with models of desires for union membership. First, does union involvement influence desires for membership by (1) locating unions in the routines of everyday life and thus engendering habitual desires for membership or (2) by shaping general beliefs about unions and, thus, creating ideological desires for membership? This study of the working class in Hamilton, Ontario supports both explanations, although the path of influence through beliefs is stronger. Second, why do a number of general union beliefs have net effects on desires for membership? This study finds that different types of beliefs are salient for different groups of workers. Therefore, a wide range of general beliefs must be considered if the desires for union membership of a diverse population are to be adequately predicted.     

Work-related violence—is national reporting good enough?

Throughout Europe there are relatively few statistics, gathered a national level, which deal specifically with the problem of violence at work. In the UK, the revised Reporting of Injuries. Discases and Dangerous Occurrences Regulations (RIDDOR) 1995 now require that certain violent incidents are reported on a national basis. The criteria for reporting, which are entirely dependent on the physical outcome of incidents. are discussed. It is recommended that employing organizations should establish their own internal systems for reporting and recording a wider range of violent, and potentially violent. incidents. These should then be used to inform risk assessment and risk management.     

All it takes is leadership

The authors, as leaders in a public child welfare system, have teamed together and reached out to their private sector partners in a large, rural county in western Colorado. This effort was part of a comprehensive, communitywide effort to redesign and fundamentally improve the entire child welfare service delivery system. Across the country in many areas where collaboration and integration have been the focus, we often hear voices in the private and public sector declaring the importance of integration. Why, then, does it not happen as a general course of action? The authors believe the answer lies in leadership, both public and private. They hold the Mesa County model up as witness to that fact.     

The Family Rule Concept in the Theory of Family Therapy: Part II**

In the second part of this paper the author traces the processes by which it is possible to learn rule conforming behaviours without necessarily being able to formulate the rule or see any point in the rule; the rule is followed blindly. In following a rule blindly a person may nevertheless be engaged in a practice which has a systemic function; he argues that when we positively connote symptomatic behaviours in the process of making paradoxical systemic interventions, we should avoid any suggestion that the family members are acting deliberately with the goal of “helping” in mind.