Unification of Dirichlet Methodology

In this article we provide a unified framework for solving Dirichlet related probability and waiting time problems. We consider a Pólya sampling scheme in which each time an object is selected, it is put back into the population along with c additional objects of the same type. By considering both fixed sample size and inverse sampling procedures, we unify the Dirichlet I, J, C, and D functions with their hypergeometric counterparts by extending these functions to Pólya sampling. We then use these functions to unify and extend the corresponding expected waiting time results.     

Probability computations for an extension of the geometric distribution

An extension of the stochastic process associated with the geometric distribution is presented. Combinatorial arguments are used to derive probabilities for various events of interest. Probabilities are approximated by evaluating truncated series. Bounds on the errors of approximation are developed. An example is presented and some additional applications are noted.     

The Transformative Potential of Experience: Learning,Group Dynamics,and the Development of Civic Virtue in a Mobile Soup Kitchen

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - Civic engagement has long been understood as a transformative activity, conducive to the reformation of individual...     

Ambivalent economizations: the case of value added modeling in teacher evaluation

Theory and Society - Research on economization processes is increasingly taking seriously the social and material processes through which various policy domains are transformed into economic...     

Evolution of nonunion employee representation in Canada

Canadians have greater latitude in operating nonunion plans without fear of unfair labor practice challenges, while Americans are constrained by the National Labor Relations Act. The reasons for Canada’s divergence from the U.S. approach are described. The details of Canadian statutes pertaining to nonunion representation are discussed. The article then explores the nonunion terrain that developed in Canada in the face of the continued legality of nonunion representation. The fates of a number of historically significant nonunion plans are presented. New data from a 1996 survey by Lipset and Meltz indicate that despite significant public policy differences, penetration of nonunion forms is remarkably similar in the two countries.     

Walk-in Together: A pilot study of a walk-in online family therapy intervention

Many Australians are requiring mental health care, including families, leading to long wait times in order to access support. Walk-in therapy reduces barriers to mental health support services by providing support at the time that families seek help. This paper presents a proof-of-concept study investigating the acceptability and short-term effectiveness of an online walk-in family therapy service, Walk-in Together (WIT). Part 1 of the paper describes the experiences of 44 family members from 22 families who presented to a public family therapy clinic for a virtual walk-in family therapy session. The session was conducted by a team of three experienced family therapists. Family members' experiences were sought pre-session, post-session, and at 6 weeks follow-up via survey and interview. Part 2 of the paper explores therapist perceptions (n = 7) of the WIT approach, through thematic analysis of semi-structured interview data. Post-session feedback showed 85% of family members found WIT to be helpful and 50% were optimistic about their future as a family after their WIT session. Six weeks post-session it was revealed that WIT supported planning for families in equipping them to move forward with 88% of family members reporting that they knew what to do after the session. All therapists uniformly experienced the model as offering a timely and beneficial service, suitable for diverse presentations and constellations of families. These preliminary results suggest the significant utility of this WIT intervention as a well-received and helpful service for families, who valued the easy access and rapid therapeutic response afforded by the online, walk-in delivery model. This proof-of-concept paper suggests the potential for further development and growth of WIT, as well as other mental health support services using a walk-in, telehealth model to meet the rising demand for therapeutic support for families in distress.     

Evaluating the Possible Impact of Pension Reforms on Elderly Poverty in Europe

Since the 1990s, reforms have changed substantially both the nature of state pension provision and the level of generosity. This article tries to assess the impact of these changes using estimates of pension wealth for a number of hypothetical cases. By focusing on all prospective pension transfers rather than just those at the point of retirement, this approach can provide additional insights, especially on the impact of changes in benefit indexation. These estimates corroborate existing evidence that reforms have decreased generosity significantly. Moves to link benefits to contributions have made systems less progressive, raising adequacy concerns for certain groups. The reforms have, in particular, strengthened the need of ensuring better access to labour markets, of having in place adequate crediting arrangements and minimum pensions.     

Statistical considerations associated with a comprehensive regulatory framework to address the unmet need for new antibacterial therapies

At present, there are situations in antibiotic drug development where the low number of enrollable patients with key problem pathogens makes it impossible to conduct fully powered non‐inferiority trials in the traditional way. Recent regulatory changes have begun to address this situation. In parallel, statistical issues regarding the application of alternative techniques, balancing the unmet need with the level of certainty in the approval process, and the use of additional sources of data are critical areas to increase development feasibility. Although such approaches increase uncertainty compared with a traditional development program, this will be necessary to allow new agents to be made available. Identification of these risks and explicit discussion around requirements in these areas should help clarify the situation, and hence, the feasibility of developing drugs to treat the most concerning pathogens before the unmet need becomes even more acute than at present. Copyright © 2014 John Wiley & Sons, Ltd.