Migration arising from gradients in shear stress: Particle distributions in Poiseuille flow

Experimental evidence for the existence of shear induced migration processes is reviewed and the mechanism by Leighton and Acrivos (1987b) is described in detail. The proposed mechanism is shown to lead to the existence of an additional shear induced migration in the presence of gradients in shear stress such as would be found in Poiseuille flow, and which may be used to predict the amplitude of the observed short-term viscosity increase. The concentration and velocity profiles which result from such a migration are discussed in detail and are compared to the experimental observations of Karnis, Goldsmith and Mason (1966)

Recognition of micro-scale deformation structures in glacial sediments - pattern perception, observer bias and the influence of experience

It is a scientist's mission to try to remain unbiased. However, certain factors play a role in scientific analyses that are not controlled by conscious thought. These factors are potentially very important in areas of science where interpretations are based on a scientist's ability to identify patterns or structures. One such area is the micromorphology of glacial sediments. In this paper we investigate the role of an analyst's experience in relation to pattern perception with specific reference to turbate microstructures in glacial diamictons. An experiment was conducted on 52 participants, which demonstrated that, as may be expected, more experienced (glacial) micromorphologists tend to exhibit a higher sensitivity-to-signal, but that complete novices, if given clear instructions, can reach levels of sensitivity similar to those of experts. It also showed, perhaps more surprisingly, that response bias does not decrease with experience. We discuss psychological factors, such as the drive for success and consistency, that may have contributed to these results and investigate their possible implications in the micromorphological analysis and interpretation of glacial sediments

The Religion of the Non-Jurors and the Early British Enlightenment: a study of Henry Dodwell

Cataloged from PDF version of article.The article considers the fundamental motivations and associated theological thought of those involved in the Non-Juring schism in the Church of England in the period after the Revolution of 1688. It indicates and exemplifies how that thought is to be related to wider intellectual conflicts of the period, considered as constituting an early phase of Enlightenment/ Counter-Enlightenment debate. The works of the leading Non-Juror theologian, Henry Dodwell, and in particular his writings on the destiny of the soul, serve as an area of focus. Extensive reference is also made to the equally prominent Non-Juror, Charles Leslie. r 2002 Elsevier Science Ltd. All rights reserved

Thomas Allies, John Henry Newman and Providentalist History

Cataloged from PDF version of article.This article discusses and evaluates the historiographical work of a leading Oxford convert and Ultramontane, Thomas Allies (1813 1903). An evaluation of Allies by the criteria of the Ultramontane scholarship he endeavoured to practise allows the article to offer an illustration of the difficulty in establishing and maintaining an autonomous Catholic scholarship during the nineteenth century’s secularising development of academic activity. It also allows substantial description of the patterns of nineteenth-century Catholic historical thought, noting the strength of its commitment to providentialism and, in particular, its apocalyptic character. An examination of the influences brought to bear on the subject’s thought during the formative period of his development as an historian, through his own study and his close friendship with John Henry Newman, indicates the reasons for Allies’s ultimate failure either to create a clear and stimulating product of the Ultramontane historical vision or to achieve an academic or popular reputation as an historian. The article argues that an unresolved conflict, between Allies’s inclination towards a providentialist historiography consistent with his commitment to a Catholic counter-culture and his willingness to accept, under Newman’s guidance, contemporary secular historiographical norms, offers substantial explanation of this failur