Engaging families in child welfare services: an evidence-based approach to best practice

Successfully engaging clients in the helping process is a critical task for child welfare practitioners. Drop-out and noncompliance rates in child welfare services are high and lead to high rates of removal of children from their families and to eventual termination of parental rights. Although no known interventions guarantee treatment compliance, this review of the empirical literature delineates critical components of engagement in child welfare services. Effective engagement strategies, including service components and caseworker qualities and behaviors, are identified as contributing to the positive case outcomes of treatment compliance, family preservation, and placement prevention. The unique needs of neglectful parents are also examined, with recommendations for practice.     

Confronting abusers: the opinions of clinicians and survivors

Confrontation of an abuser is often regarded as a powerful process in clinical work with adult survivors of childhood sexual abuse. This paper explores direct and symbolic forms of survivors confronting their abusers via a review of the current literature and the self-report of 12 female survivors, post-therapy. Six of the survivors had chosen to directly confront their abusers and six had not. Their experiences and opinions are presented together with a discussion of important issues within this area and the need for further research.     

Sick leave -- Cushion or entitlement? A study of age cohorts' attitudes and practices in two Australian workplaces

Stereotypes of older people suggest that they may experience more sickness and injury therefore may not be as productive as younger employees. The present paper attempts to test these stereotypes and reports research into patterns of sick leave in different age cohorts and attitudes towards the use of sick leave. The research was carried out at two case study sites. Managers were interviewed and focus groups were held with workers. A complex pattern was found, suggesting structural issues such as sick leave entitlements, workplace organisation, and flexible work patterns interacted with managers' and workers' attitudes, age, gender and family responsibilities. Flexible workplace hours, and part payment for unused sick leave and insecurity of employment appeared as important factors in reducing absenteeism. The most striking finding was that older workers past pensionable age took the least sick leave. Older workers were careful to conserve sick leave as a 'cushion' for serious illness. Workplace pressures especially those resulting from the failure of management to replace absent workers resulted in work pressure on peers and thus reluctance of workers to take leave.     

Laws of the iterated logarithm and large deviations for a class of diffusionl processes

We use the martingale approach to study large deviations and laws of the iterated logarithm for certain multidimensional diffusion processes. The criteria for the validity of these properties are expressed in terms of averaging properties of the coefficients of the infinitesimal generator. In particular we apply our results to diffusion processes with random coefficients.     

Estimating bird species richness from capture and count data

We used capture-recapture methods to estimate bird species richness from mist-net and point-count data from a study area in Campeche, Mexico. We estimated species richness separately for each survey technique for two habitats, forest and pasture, in six sampling periods. We then estimated richness based on species' detections by either technique, and estimated the proportion of species detected by each technique that are not part of the population sampled by the other technique. No consistent differences existed between richness estimates from count data and from capture data in the two habitats. In some sampling periods, over 50% of the richness estimate from one survey technique may be species that are not sampled by the other technique, suggesting that one technique may not be adequate to estimate total species richness and that comparing estimates from areas sampled by different techniques may not be valid.     

Testing for randomness in stream ciphers using the binary derivative

The binary derivative has been used to measure the randomness of a binary string formed by a pseudorandom number generator for use in cipher systems. In this paper we develop statistical properties of the binary derivative and show that certain types of randomness testing in binary derivatives are equivalent to well-established tests for randomness in the original string. A uniform method of testing randomness in binary strings is described based on using the binary derivative. We show that the new tests are faster and more powerful than several of the well-established tests for randomness.     

A construction for generalized hadamard matrices GH(4q, EA(q))

We give a construction for a generalized Hadamard matrix GH(4q, EA(q)) as a 4 × 4 matrix of q × q blocks, for q an odd prime power other than 3 or 5. Each block is a GH(q, EA(q)) and certain combinations of 4 blocks form GH(2q, EA(q)) matrices. Hence a GH(4q, EA(q)) matrix exists for every prime power q.