Research indicates that engagement in community organizations is positively associated with health, particularly among aging populations, yet few studies have examined in detail the influence of community engagement (CE) on later health among African Americans. This study provides a longitudinal...

Largely absent in the congressional debate regarding U.S. welfare reform reauthorization are policy discussions aimed at preventing long-term welfare use for families at risk. This study examines three social science perspectives explaining the relationship between early poverty and health as a...

We make a first step in the literature to analyse a hybrid model of credit rationing with simultaneous presence of adverse selection and moral hazard. Motivated by the observation that credit markets in less-developed countries are rather opaque owing to the lack of necessary institutions to...

This paper presents an experimental study of the alcohols–gasoline and gasoline–alcohols dual-fuel spark ignition (DFSI) combustion for knock suppression and higher engine efficiency using a gasoline engine with high compression ratio. Alcohols–gasoline DFSI is organized using a port fuel...

Let ξ=(ξt) be a locally finite (2,β)-superprocess in Rd with β<1 and d>2/β. Then for any fixed t0, the random measure ξt can be a.s. approximated by suitably normalized restrictions of Lebesgue measure to the ε-neighborhoods of suppξt. This extends the Lebesgue approximation of Dawson–Watanabe...</1>

In this article, we introduce the stthreg package of Stata commands to fit the threshold regression model, which is based on the first hitting time of a boundary by the sample path of a Wiener diffusion process and is well suited to applications involving time-to-event and survival data. The...

This paper considers joint analysis of current status and marker data using a threshold model based on first hitting times. A failure time is defined as the time at which a subject's latent health status process first decreases to zero. We extend the bivariate Wiener process model in Whitmore et...