Can a computer model improve the health outcomes of an entire community? The Healthy Monadnock initiative is aiming to find out. A recent July 29 workshop featured several of Healthy Monadnock’s ...

An extension of the graded response model of Samejima (1969) for the measurement of variability and change is presented. In this model it is assumed that an occasion-specific latent variable is ...

In this paper we propose a novel approach for measuring risks when the data available is expressed on an ordinal scale. As a result we obtain a new index of risk bounded between 0 and 1, which leads ...

Physicists have improved the accuracy of a technique that uses variable stars to measure distances in the universe, providing a new figure for its expansion rate. When you purchase through links on ...