Analogue to Digital and Digital to Analogue Converters (ADCs and DACs): A Review Update

This is a review paper updated from that presented for CAS 2004. Essentially, since then, commercial components have continued to extend their performance boundaries but the basic building blocks and the techniques for choosing the best device and implementing it in a design have not changed. Analogue to digital and digital to analogue converters are crucial components in the continued drive to replace analogue circuitry with more controllable and less costly digital processing. This paper discusses the technologies available to perform in the likely measurement and control applications that arise within accelerators. It covers much of the terminology and 'specmanship' together with an application-oriented analysis of the realisable performance of the various types. Finally, some hints and warnings on system integration problems are given.Comment: 15 pages, contribution to the 2014 CAS - CERN Accelerator School: Power Converters, Baden, Switzerland, 7-14 May 201

Counterexamples to Rational Dilation on Symmetric Multiply Connected Domains

We show that if R is a compact domain in the complex plane with two or more holes and an anticonformal involution onto itself (or equivalently a hyperelliptic Schottky double), then there is an operator T which has R as a spectral set, but does not dilate to a normal operator with spectrum on the boundary of R.Comment: Post-refereed versio

Brotherton Collection MS 501 : a Middle English anthology reconsidered

Brotherton Collection MS 501, in Leeds University Library, is a fifteenth-century anthology of Middle English religious verse and prose, best known for the Prick of Conscience with which it begins. It received its first proper description in 1952,' and it has recently been described in detail by Ralph Hanna (1982) and N. R. Ker (1983).2 Nevertheless the published descriptions are unsatisfactory in one way or another, and the manuscript's special character has not been brought out

University Scholar Series: Mary Pickering

Auguste Comte: An Intellectual Biography On November 17, 2010 Mary Pickering spoke in the University Scholar Series hosted by Provost Gerry Selter at the Dr. Martin Luther King, Jr. Library. Mary Pickering discussed her three-volume Pulitzer Prize nominated work entitled Auguste Comte: An Intellectual Biography. Comte was a French Philosopher and the father of sociology. Professor Pickering teaches courses at SJSU in French history, German history, European women\u27s history, and urban history.https://scholarworks.sjsu.edu/uss/1005/thumbnail.jp

Determinism in the mountains: The ongoing belief in the bellicosity of 'mountain people'

It has long been argued that mountains have an effect on wars. While some research understands this chiefly in physical terms, other research looks at the effect that mountains have on human nature. This article looks at the two thousand year history of the term 'mountain people.' It explores how the belief has emerged that living in mountainous regions changes people to the degree that it makes them more likely to engage in conflict. It also explores how mountain people can be seen in a more positive light, but this perspective is often ignored by both popular media and conflict research. It makes the case that the foundations upon which perceptions of 'mountain people' are based are rather shaky and somewhat misleading for empirical conflict research

Exploration of the moon and planets

Unmanned interplanetary flight - engineering problems of mariner ii space prob

Brutalist Premolition

'Brutalist Premolition' is a high definition video, duration 8 minutes; installation, dimensions variable and performance, duration 40 minutes. 'Brutalist Premolition' is set within an apartment on the sprawling Robin Hood Gardens Estate in East London, a key example of post-war New Brutalist architecture intended as a utopian form of large-scale social housing (designed by Alison and Peter Smithson). The film explores multiple layers of representation and performance, from the introduction of professional soap-opera actors to the everyday reality of a family, long term residents on the estate. BRUTALIST PREMOLITION, the video projection and installation, was first shown as a solo exhibition at the Institute of Contemporary Arts, London in October 2008 as part of ‘Nought to Sixty’ - “… a programme of exhibitions and events presenting solo projects by sixty emerging British- and Irish-based artists at the ICA from 5 May to 2 November 2008, over which period new events were staged every week, building up a multi-faceted portrait of the contemporary art scene in Britain and Ireland,” curators Mark Sladen and Richard Birkett

Some new methods for planetary exploration

For many centuries the planets of our solar system have been objects of study by astronomers. Before the invention of the telescope, these studies were restricted to an attempt to understand and predict their motion. Telescopes and accurate clocks allowed more precise observations to be made. By the 19th century, minor perturbations of the motions of the planets were being analyzed. By the end of this century, however, astronomers were becoming more interested in stellar and galactic problems, and the group interested in celestial mechanics and planetary observations appeared to be decreasing to a vanishing point in the mid-20th century. Then came the space program, and the possibility of performing experiments on, or at least near, other planets encouraged interest in the solar system to a remarkable degree

PIVOT Learning Aims Scale - Template for use in PIVOT Stage 3

This Learning Aims scale template is for use with the PIVOT stage 3 Generating Learning Aims for Practice activity