In their recent articles, Mortimer et al. (2007) and Bowen et al. (2007) imply that historical declines in hawksbill sea turtle (Eretmochelys imbricata) populations in the Caribbean together with new phylogenetic data provide solid evidence that hawksbills cannot be harvested on a sustainable level. We suggest that broad inferences on the impacts of harvesting based on phylogenetic data alone a...

We study the geodesic flow of a class of 3-manifolds introduced by Benoist which have some hyperbolicity but are non-Riemannian, not CAT(0), and with non-C geodesic flow. The geometries are nonstrictly convex Hilbert geometries in dimension three which admit compact quotient manifolds by discrete groups of projective transformations. We prove the Patterson-Sullivan density is canonical, with ap...

We present preliminary results of a simultaneous X-ray/optical campaign of the prototypical LMXB Sco X-1 at 1-10 Hz time resolution. Lightcurves of the high excitation Bowen/HeII emission lines were obtained through narrow interference filters with ULTRACAM, and these were cross-correlated with X-ray lightcurves. We find evidence for correlated variability, in particular when Sco X-1 enters the...

Let G be a countable discrete amenable group which acts continuously on a compact metric space X and let μ be an ergodic G−invariant Borel probability measure on X. For a fixed tempered Følner sequence {Fn} inG with lim n→+∞ |Fn| logn =∞, we prove the following variational principle: h(Gμ, {Fn}) = hμ(X,G), where Gμ is the set of generic points for μ with respect to {Fn} and h(Gμ, {Fn}) is the B...

We show that, for countable sofic groups, a Bernoulli action with infinite entropy base has infinite entropy with respect to every sofic approximation sequence. This builds on the work of Lewis Bowen in the case of finite entropy base and completes the computation of measure entropy for Bernoulli actions over countable sofic groups. One consequence is that such a Bernoulli action fails to have ...

Perry, W. F. & Bowen, H. F. (1956) Am. J . Physiol. 184,59-62 Salmon, D. M. W., Bowen, N. L. &Hems, D. A. (1974) Biochem. J . 142,611-618 Schaeffer, L. D., Chenoweth, M. dc Dunn, A. (1969) Biochim. Biophys. Acta 192,292-303 Shigeta, Y . & Shreeve, W. W. (1964) Am. J. Physiol. 206,1085-1090 Welt, I. & Wilhelnd, A. E. (1950) Yale J. Biol. Med. 23,99-111 Windmueller, H. G. & Spaeth, A. E. (1966) J...

It is well-known that Bowen-York initial data contain spurious radiation. Although this “junk” radiation has been seen to be small for non-spinning black-hole binaries in circular orbit, its magnitude increases when the black holes are given spin. It is possible to reduce the spurious radiation by applying the puncture approach to multiple Kerr black holes, as we demonstrate for examples of hea...

BACKGROUND Several clinical entities combine ectodermal dysplasia (ED) and cleft lip and/or palate (CL/P). These disorders have been recognized with a narrow phenotypic spectrum and very similar clinical features. CASE PRESENTATION We report a case with a clinical diagnosis of Hay Wells syndrome (ankyloblepharon, ED and CL/P), who is a descendent of a mother with Bowen Armstrong syndrome (ED,...

Retiring group purchasing veteran Robert “Bud” Bowen says he is optimistic the industry will convince critics in government that it is capable of regulating itself and thus avoid passage of limiting legislation. Bowen, who retired March 31 as CEO of Amerinet in St. Louis, says there are laws in place to provide the oversight of contracting methods and vendor relationships that critics have dema...