INTRODUCTION During the last 200 years there has been no significant improvement upon William Heberden's original description of the symptoms of angina pectoris.' Although he was unaware of the aetiology of the condition, so relatively quickly did his account become established that C. H. Parry's controversial attempt, thirty years later, to point out " . . . the mistakes of some of my medical ...

Introduction Within the context of my Ph.D. dissertation, I am interested in (1) the impact of superiors' management skills and subordinates' working skills on the building of their (hierarchical) relationship and (2) the impact this hierarchical relationship has upon the mental health of workers (i.e. both superiors and subordinates). Research to date has revealed the potentially negative cons...

We determine the structure of the set of intermediate β-shifts of finite type. Specifically, we show that this set is dense in the parameter space ∆ = {(β,α) ∈ R2 : β ∈ (1,2) and 0 ≤ α ≤ 2−β}. This generalises the classical result of Parry from 1960 for greedy and (normalised) lazy β-shifts.

IMPLICATIONS FOR PALEO-GROUNDWATER GEOCHEMISTRY AND HEMATITE ON MARS. B. Beitler, and M. A. Chan, W. T. Parry, J. Ormö, G. Komatsu, University of Utah, Department of Geology and Geophysics, (135 South 1460 East, Salt Lake City, UT 84112-0111, [email protected]), Centro de Astrobiología (INTA/CSIC), (Instituto Nacional de Técnica Aeroespacial, Ctra de Torrejón a Ajalvir, km 4, 28850 Torrej...

Similarly to Parry’s characterization of β-expansions of real numbers in real bases β > 1, Ito and Sadahiro characterized digital expansions in negative bases, by the expansions of the endpoints of the fundamental interval. Parry also described the possible expansions of 1 in base β > 1. In the same vein, we characterize the sequences that occur as (−β)-expansion of −β β+1 for some β > 1. These...

A million people die from viral hepatitis every year, yet until now the public health response has been patchy and piecemeal, overwhelmed by the sheer scale of the problem. Jane Parry reports.