Microstructure of Silica in the Presence of Iron Oxide

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/65543/1/j.1151-2916.1960.tb14328.x.pd

Probabilistic forecasting using stochastic diffusion models, with applications to cohort processes of marriage and fertility

In this article, we show how stochastic diffusion models can be used to forecast demographic cohort processes using the Hernes, Gompertz, and logistic models. Such models have been used deterministically in the past, but both behavioral theory and forecast utility are improved by introducing randomness and uncertainty into the standard differential equations governing population processes. Our approach is to add time-series stochasticity to linearized versions of each process. We derive both Monte Carlo and analytic methods for estimating forecast uncertainty. We apply our methods to several examples of marriage and fertility, extending them to simultaneous forecasting of multiple cohorts and to processes restricted by factors such as declining fecundity

Exploring the Salience of Intergenerational Trauma among Children and Grandchildren of Victims of Apartheid-Era Gross Human Rights Violations

Apartheid, as a systemised and institutionalised process of race-based discrimination, exploitation and oppression, left in its wake a deeply traumatised society. Many feel that this collective trauma has not been sufficiently addressed and that this has rendered the peace achieved after Apartheid’s demise increasingly fragile. In addition to this, we are reminded that traumatic memories affect not only those who have personally experienced conflict and violence, but also future generations through what is known as intergenerational transmission of trauma. This paper explores the salience of intergenerational trauma in South Africa. At a conceptual level, it is framed by the life course perspective and historical trauma theory. Methodologically, a hermeneutic phenomenological approach was utilised. Qualitative interviews were conducted with 20 children and grandchildren (females = 10, males = 10) of victims of Apartheid-era gross human rights violations. The interview data was subjected to an interpretative analytical process that yielded a number of themes which provide support for the salience of intergenerational trauma amongst descendants of victims of Apartheid-era gross human rights violations. These themes – secondary traumatisation, socioeconomic and material impact, and sense of powerlessness and helplessness – are discussed along with their possible implications, and foci for further research pointed to