PURPOSE OF THE STUDY Investigating health disparities requires studies designed to recruit and retain racially and socioeconomically diverse cohorts. It is critical to address the barriers that disproportionately affect participation in clinical research by minorities and the socioeconomically disadvantaged. This study sought to identify and rectify these barriers to recruit and retain a biraci...

Kentlclh }Ifirdy is a stall’ scientist in the Space Sc iences I)irt.rtorate of lmckhced Missiles & Space Co and is doing t-esearch on the use of sate l l i tes for n]oniloring the Iiarlh’s atmosphere and sl]rface. lkrliet he was tlw Chief of the Satellite h4ctemology Rranch of the [lSAl~ l’hillips 1.aimratory and has twenty-f ive ye;im of cxpctience working with ground-based and satell i te Ict...

Many authors in recent years have proposed extensions of familiar survival analysis methodologies to apply in dependent data settings, for example, when data are clustered or subject to repeated measures. However, these extensions have been considered largely in the context of right censored data. In this paper, we discuss a parametric frailty model for the analysis of clustered and interval ce...

Four experiments with male rats investigated perceptual learning involving a tactile dimension (A, B, C, D, E), where A denotes 1 end of the continuum (e.g., a rough floor) and E the other (e.g., a smooth floor). In Experiment 1, rats given preexposure to A and E learned an appetitive discrimination between them more readily than those not given preexposure. Experiment 2a showed that rats preex...

The concept of survival signature has recently been introduced as an alternative to the signature for reliability quantification of systems. While these two concepts are closely related for systems consisting of a single type of component, the survival signature is also suitable for systems with multiple types of component, which is not the case for the signature. This also enables the use of t...

U uvodnom dijelu navode se fenomeni ambre u prirodi, trgovački pravci kretanja u antici, simbolika i zdravstvena svojstva skupocjene smole, te načini obrade, posebno u Akvileji. Jantarni prsten s prikazom životinje (lava) i mladolikog muškarca (Heraklo) iz rimske nekropole Burle u Medulinu (1.–2. st.), uz komparaciju s akvilejskim jantarnim nakitom, veličinom, bojom i značajem jedinstven je u i...

We show that under reasonable conditions the nonparametric maximum likelihood estimate (NPMLE) of the distribution function from left-truncated and case 1 interval-censored data is inconsistent, in contrast to the consistency properties of the NPMLE from only left-truncated data or only interval-censored data. However, the conditional NPMLE is shown to be consistent. Numerical examples are prov...

OBJECTIVE To carry out an up-to-date comprehensive survey of the content and quality of intervention trials relevant to the treatment of people with schizophrenia. DESIGN Data were extracted and analyzed from 10,000 trials on the Cochrane Schizophrenia Group's Register. MAIN OUTCOME MEASURES Source, type and date of publication, country of origin, language, size of trial, interventions, and...

.....in which Professor Benchie, an established super-subspeciality clinician who spends most of his time performing laboratory research, profers advice toAthena, an enthusiastic early career physician who, although she spent summers in the lab as a medical student, is just finishing a research fellowship that included a course in clinical research and wonders whether she would prefer to devote...