martin powell suggests that the death of the english national health service (nhs) has been announced so many times we are at risk of not noticing should it actually happen. he is right. if we ‘cry wolf’ too many times, we risk losing sight of what is important about the nhs and why.

The calibration of micro inertial measurement units is important in ensuring the precision of navigation systems, which are equipped with microelectromechanical system sensors that suffer from various errors. However, traditional calibration methods cannot meet the demand for fast field calibration. This paper presents a fast field calibration method based on the Powell algorithm. As the key po...

The Absolute isotopic Abundance and Atomic Weight of a Reference Sample of Silver. L. J. Powell, T. J. Murphy, and J. W. Gramlich .................... ,,.,.,,.,,., 9 Recalculation of the Faraday Constant Due to a New Value for the Atomic Weight of Silver. V. E. Bower, R. S. Davis, T. J. Murphy, P. J. Paulsen, J. W. Gramlich, and L. J. Powell .................... 21 An Analysis of Read-Out Pertu...

The medical image registration algorithm uses the mutual information measure function that has many local extremes. Therefore, we propose our medical image registration algorithm that combines generalized mutual information with PSO-Powell hybrid algorithm and uses the objective measure function based on Renyi entropy. The Renyi entropy can remove the local extremes. We use the particle swarm o...

We present the construction of a multivariate normalized B-spline basis for the quadratic C-continuous spline space defined over a triangulation in R (s ≥ 1) with a generalized Powell-Sabin refinement. The basis functions have a local support, they are nonnegative, and they form a partition of unity. The construction can be interpreted geometrically as the determination of a set of s-simplices ...

Powell and Hunter (1953) do not concur with the conclusions reached by this laboratory (Hardwick and Foster, 1952) that washed vegetative cells of aerobic bacilli can sporulate in the absence of exogenous nutrition and when growth is precluded. Their view is based essentially on the demonstration that under the conditions maintained in their experiments mass lysis of the cells initially present...