Exact optimal experimental designs with constraints

The experimental design literature has produced a wide range of algorithms optimizing estimator variance for linear models where the design-space is finite or a convex polytope. But these methods have problems handling nonlinear constraints or constraints over multiple treatments. This paper presents Newton-type algorithms to compute exact optimal designs in models with continuous and/or discrete regressors, where the set of feasible treatments is defined by nonlinear constraints. We carry out numerical comparisons with other state-of-art methods to show the performance of this approach.     

Fertility-related pensions and cyclical instability

In this paper, we study a general equilibrium model with overlapping generations, endogenous fertility and public pensions. By assuming Cobb–Douglas technology and logarithmic preferences, we show that the introduction of a fertility-related component in the pay-as-you-go pension scheme may destabilise the long-term equilibrium and cause endogenous fluctuations when individuals have static expectations. The possibility of cyclical instability increases (resp. reduces) when both the subjective discount factor and relative weight of individual fertility in pay-as-you-go pensions (resp. the parents’ taste for children) increase(s). Interestingly, when public pensions are contingent on the individual number of children, the financing of small-sized benefits may cause the occurrence of a flip bifurcation, two-period cycles and cycles of a higher order. In addition, we show through numerical simulations that these results hold in a more general setting with a constant inter-temporal elasticity of substitution utility function and a constant elasticity of substitution production function. Our findings identify a possible novel factor responsible for persistent deterministic fluctuations in a context of overlapping generations, while also representing a policy warning regarding the destabilising effects of fertility-related pension reforms, which are currently high in both the theoretical debate and the political agendas of several developed countries.     

Nursing home social services directors and elder abuse staff training

In a nationally representative study of 1,071 nursing home social services directors 80% of social services departments provided resident rights training and 60-70% were involved in abuse training. Departments headed by recent grads and in chain nursing homes or in the northeast were more likely to be involved in training. Seventy-two percent of social services directors were able to provide one-on-one training about reporting suspected abuse; education and licensure were related to ability to train.     

All aboard: advancing the social work research agenda in end-of-life and palliative care

Social workers in all practice areas have the potential to contribute to the National Agenda for Social Work Research in Palliative and End-of-Life Care. The purpose of this article is to invite social work practitioners and researchers to identify research needs and work with others to address them. We offer a conceptualization of the broad scope of social work's involvement in end-of-life issues, and articulate the difference between end-of-life care and end-of-life issues in social work. Suggestions are offered to advance the national research agenda.