Survival analysis is used to analyze data from patients who are followed for different periods of time and in whom the outcome interest, a dichotomous event, may or not have occurred at study halted; all analysis, including dropped out, regardless duration follow-up. This article discusses basic concepts survival explains technical terms such as censoring, provides reasons why ordinary methods ...

The blossoming of possible world semantics in the 1960s and 70s set the stage for many developments in research on indexical reference and other aspects of context-sensitivity; I will focus in this chapter on the work of David Kaplan, particularly his influential monograph Demonstratives, because his work is well known, and covers the central issues. I will examine the development of his theory...

A lattice definition of QCD based on chiral defect fermions is discussed in detail. This formulation involves (infinitely) many heavy regulator fields, realized through the introduction of an unphysical fifth dimension. It is proved that non-singlet axial symmetries become exact in the limit of an infinite fifth dimension, and before the continuum limit is taken. ∗ Present address: School of Ph...

Cavitation is harmful to water turbines and may cause operation delays of several weeks. The real-time detection of cavitation risk is increasingly important, and even narrow cavitation-free power ranges can be utilised in load optimisation. Higher derivative signals x and x calculated from acceleration signals are very suitable for detecting impacts. This paper introduces a generalised moment ...