Introduction: Calcium-aluminium-rich inclusions (CAIs) are refractory aggregates of Ca, Al, and Ti-rich oxides and silicates found in most kinds of chondritic meteorites. They are best displayed in the CV chondrites where they have been found to be the oldest objects with solar isotopic abundances. Their age of 4567 Myr has been widely adopted as marking the start of the Solar System. At that t...

Municipal fire departments responded to approximately 53,000 intentionally-set fires annually from 2003 to 2007, according to National Fire Protection Association figures. A disproportionate amount of these fires occur in spatio-temporal clusters, making them predictable and, perhaps, preventable. The objective of this research is to evaluate how the aggregation of data across space and target ...

Research on homeless and runaway adolescents has shown that this population is at high risk for illicit drug use. Though sexual abuse has been widely considered in the etiology of illicit drug use, we know less about how early sexual abuse affects young people’s decisions to run away, to use drugs, and to engage in other deviant behavior on the streets. Based on interviews with 361 female homel...

Objective: This study aims to explore whether an expert system can improve the process of data analysis and control in welfare institutions and the system’s level of precision in predicting risk factors when comparing it to existing data from previous cycles. In this way, it is possible to evaluate the use and contribution of the system to implementing more efficient supervisory methods, such a...