Psychosocial factors and safety behaviour as predictors of accidental work injuries in farming

Farming is one of the most hazardous occupations in terms of the incidence and seriousness of accidental injuries. Research with other occupational groups has drawn attention to the role of psychosocial factors and stress. Such research needs to be extended to agriculture. Since stress may be a problem faced by farmers, there is a particular need to investigate the associations between farm accidents and work stressors and stress reactions. Using multivariate logistic regression analyses, this study aimed to uncover the best psychosocial predictors of injury, while controlling for exposure-related confounders. From a randomly selected sample of 794 farms, 10% of all farms in Ringkoebing County, Denmark, 393 farmers completed completed weekly accident registration over 12 months. The study sample consisted of 310 farmers who also completed questionnaires on psychosocial factors. Results indicated that farm stressors (including perceived economic problems), stress symptoms, and safety behaviour were predictors of occupational farm accidents. Higher levels of stressors and stress symptoms and poor safety behaviour were all associated with an elevated risk of injury. In the case of stress symptoms, the relation with accidents occurred via an interaction with safety behaviour. The combination of high levels of stress symptoms and poor safety behaviour was associated with a particularly high accident risk.     

Poverty among households with children: a comparative study of Norway and Germany

The purpose of this study was to compare poverty among lone parent households and couple households with children in Norway and Germany. The study applied three different measurement strategies: income poverty, material deprivation and reception of social assistance. We found that income poverty and material deprivation rates are higher in Germany than in Norway and are also higher for lone parents than for couples with children. Our analysis of the reception of social assistance shows a different pattern in which both Norwegian and German lone parents frequently receive social assistance. The results show that the different dimensions of poverty are not independent of one another, nor do they wholly overlap. Household characteristic variables, factors influencing labour market status and educational levels also seem to influence the risk of experiencing poverty.     

Career Counselors as Advocates and Change Agents for Equality

This analysis of the career counseling profession's strengths, weaknesses, opportunities, and threats emphasizes the importance of the profession's contributions to fostering equality in a democratic society. Career counseling professionals and their National Career Development Association are well positioned to expand their concentration on fostering the career development of individuals to encompass advocacy about public policy and agency in changing systems. Advances in the use of technology, attention to multicultural issues, and advocacy of holistic models have the potential to enrich the career counseling profession's contributions to individual development and social equality.     

The 'best interests of the child' thesis: some thoughts from Australia

In the 36 years since the 1973 publication of ' Beyond the Best Interests of the Child ' by Goldstein, Freud and Solnit, the phase 'the best interests of the child' has achieved biblical standing and is now embedded in childcare and protection legislation worldwide. It also resonates through clinical reports and other materials that form the basis for proceedings in Children's Courts and in Family Law Courts. Such is the power of the phrase that it is to be found in Article 18 of the Convention on the Rights of Children that was adopted by the United Nations in September 1989. In 1996, Goldstein, Solnit and Goldstein, with Freud, indicated a preference for the phrase 'least detrimental alternative' rather than 'the best interests of the child'. For this reason, and because the world in 2009 is a far different place from that which existed 36 years ago, we think it is time to re-examine this classic phrase both in terms of its underlying thesis and how it is used in present-day childcare and protection proceedings and practice.     

Asymptotic Inference for Waiting Times and Patiences in Queues with Abandonment

Motivated by applications in call center management, we propose a framework based on empirical process techniques for inference about waiting time and patience distributions in multiserver queues with abandonment. The framework rigorises heuristics based on survival analysis of independent and identically distributed observations by allowing correlated waiting times. Assuming a regenerative structure of offered waiting times, we establish asymptotic properties of estimators of limiting distribution functions and derived functionals. We discuss construction of bootstrap confidence intervals and statistical tests, including a simple bootstrap two-sample test for comparing patience distributions. A small simulation study and a real data example are presented.     

Moving Average-Based Estimators of Integrated Variance

We examine moving average (MA) filters for estimating the integrated variance (IV) of a financial asset price in a framework where high-frequency price data are contaminated with market microstructure noise. We show that the sum of squared MA residuals must be scaled to enable a suitable estimator of IV. The scaled estimator is shown to be consistent, first-order efficient, and asymptotically Gaussian distributed about the integrated variance under restrictive assumptions. Under more plausible assumptions, such as time-varying volatility, the MA model is misspecified. This motivates an extensive simulation study of the merits of the MA-based estimator under misspecification. Specifically, we consider nonconstant volatility combined with rounding errors and various forms of dependence between the noise and efficient returns. We benchmark the scaled MA-based estimator to subsample and realized kernel estimators and find that the MA-based estimator performs well despite the misspecification.     

Invisible Whispering: Restructuring Collaborative Decision Making with Instant Messaging

Organizational decision making is dominated by teams. When an important decision is required, a team is often formed to make it or to advise the individual decision maker, because a team has more resources, knowledge, and political insight than any one individual working alone. As teams have become geographically distributed, collaboration technology has come to play an important role in such collective decision making efforts. Instant messaging (IM) is an increasingly prevalent workplace collaboration technology that enables near‐synchronous text exchanges on a variety of devices. We examined the use of IM during face‐to‐face, telephone, and computer‐mediated team meetings, a practice we call “invisible whispering.” We introduce Goffman's characterization of social interaction as dramatic performance, differentiable into “front stage” and “backstage” exchanges, to analyze how invisible whispering alters the socio‐spatial and temporal boundaries of team decision making. Using IM, workers were able to influence front stage decision making through backstage conversations, often participating in multiple backstage conversations simultaneously. This type of interaction would be either physically impossible or socially constrained without the use of IM. We examine how invisible whispering changes the processes of collaborative decision making and how these new processes may affect the efficiency and effectiveness of collaborative decision making, as well as participation, satisfaction, relationships among team members, and individual attention.     

Route first—Cluster second methods for vehicle routing

In this paper we consider route first—cluster second methods for the vehicle routing problem. Extensions to the basic method both to improve its effectiveness and to enable it to cope with practical constraints are described. Computational results are given for the method applied to standard vehicle routing problems drawn from the literature.