Estimation on dependent right censoring scheme in an ordinary bivariate geometric distribution

Discrete lifetime data are very common in engineering and medical researches. In many cases the lifetime is censored at a random or predetermined time and we do not know the complete survival time. There are many situations that the lifetime variable could be dependent on the time of censoring. In this paper we propose the dependent right censoring scheme in discrete setup when the lifetime and censoring variables have a bivariate geometric distribution. We obtain the maximum likelihood estimators of the unknown parameters with their risks in closed forms. The Bayes estimators as well as the constrained Bayes estimates of the unknown parameters under the squared error loss function are also obtained. We considered an extension to the case where covariates are present along with the data. Finally we provided a simulation study and an illustrative example with a real data.     

A Sociology of Attachment: Music Amateurs, Drug Users

After describing objects as networks, we attempt to describe 'subject-networks'. Instead of focusing on capacities inherent in a subject, we attend instead to the tactics and techniques which make possible the emergence of a subject as it enters a 'dispositif'. Opting for an optimistic analysis of Foucault, we consider 'dispositifs' and their constraints to be generative: they do not simply reduce but also reveal and multiply. The generative power of 'dispositifs' depends upon their capacity to create and make use of new capacities in the persons who pass through them. Drawing upon a diverse body of literature and upon fieldwork among drug addicts and music amateurs, we show how this point of entry into the question of the subject immediately and irredeemably undoes traditional dichotomies of sociology. It becomes impossible to continue to set up oppositions like those of agent/structure, subject/object, active/passive, free/determined. We also have to look beyond studies of 'action' and describe 'events'. Through the words and trials of the music and drug lovers, it becomes clear that the subject can emerge as she actively submits herself to a collection of constraints. These actors describe necessary yet tentative techniques of preparation to produce this 'active passion', this form of 'attachment' which we attempt to describe as that which allows the subject to emerge—never alone, never a pristine individual, but rather always entangled with and generously gifted by a collective, by objects, techniques, constraints.     

Ecosocial innovations enabling social work to promote new forms of sustainable economy

Social work research and practice that address environmental sustainability have already become prominent. However, a change in unsustainable economic structures is also urgently needed. This study explored emerging opportunities in theory and practice for a sustainable economy that are relevant to the aims of social work. As practical examples, our study concerns ‘ecosocial innovations’, i.e., social innovations that combine ecological and social goals. We analysed how these grassroots innovations in the field of social work reflect crucial shared conceptions of alternative economies. The qualitative data set comprised of 50 ecosocial innovations and six case studies in five European countries. The findings show a rich diversity of ecosocial innovations and describe how they reframe economic purposes, value economic diversity and democratise the economy. We suggest that social work might consider these practices as opportunities for collaboration, especially regarding work with people on the margins of the labour market.