This is a well-behaved concept in Newtonian physics. But a center of gravity is not an atom or a subatomic particle or any other physical item in the world. It has no mass; it has no color; it has no physical properties at all, except for spatio-temporal location. It is a fine example of what Hans Reichenbach would call an abstractum. It is a purely abstract object. It is, if you like , a theorist's fiction. It is not one of (...) the real things in the universe in addition to the atoms. But it is a fiction that has nicely defined, well delineated and well behaved role within physics. (shrink)

Engineering is 'the people-serving profession'. The work of engineers involves interaction with clients, other engineers, and the public at large. More than any other profession, their work also directly involves and affects the environment. This book makes the case that engineers have special professional obligations to protect and enhance the environment, and the authors - one, an engineer and the other, a philosopher - seek to provide an ethical basis for these obligations. In exploring these ethical issues, the authors aim (...) to show that engineers make a difference. The text opens with a series of case studies in which engineers face complex and challenging decisions about the environment. Succeeding chapters examine different ideas about environmental ethics for engineers, including professional codes and both modern and historical discussions of environmental responsibility. The book concludes with a collection of readings that complement the text. Students, as well as practising engineers, will find much of interest in this well-argued and thought-provoking book. (shrink)

This article explores three ways in which a cognitively entrenched mindreading (or 'theory of mind') system may bias our thinking as cognitive scientists. One issues in a form of tacit dualism, impacting scientific debates about phenomenal consciousness. Another leads us to think that our own minds are easier to know than they really are, influencing debates about self-knowledge, and about mindreading itself. And the third results in a bias in favour of empiricist over nativist accounts of cognitive development. The discussion (...) throughout is tentative and speculative, and can be regarded as an appeal for caution, as well as a call for further research. (shrink)

The theme of this volume is the multi-faceted 'computational turn' that is occurring through the interaction of the disciplines of philosophy and computing. In computer and information sciences, there are significant conceptual and methodological questions that require reflection and analysis. Moreover, digital, information and communication technologies have had tremendous impact on society, which raises further philosophical questions. This book tries to facilitate the task to continuously work to ensure that its diversity of perspectives and methods proves a source of strength (...) and collaboration rather than a source of instability and disintegration. The first three contributions explore the phenomenon of virtual worlds. The next four focus on robots and artificial agents. Then a group of chapters discusses the relation between human mentality and information processing in computers and the final section covers a broad range of issues at the interface of computers and society. (shrink)

The motivation for adopting reductive and anti-reductive theories of testimonial warrant is considered. Whilst both well-motivated neither position can adequately capture the dynamic aspect of the individual knowers relationship to the wider community of knowledge. A hybrid theory of testimony is proposed that attempts to do just this.

We apply an online optimization process based on machine learning to the production of Bose-Einstein condensates. BEC is typically created with an exponential evaporation ramp that is optimal for ergodic dynamics with two-body s-wave interactions and no other loss rates, but likely sub-optimal for real experiments. Through repeated machine-controlled scientific experimentation and observations our ’learner’ discovers an optimal evaporation ramp for BEC production. In contrast to previous work, our learner uses a Gaussian process to develop a statistical model of the (...) relationship between the parameters it controls and the quality of the BEC produced. We demonstrate that the Gaussian process machine learner is able to discover a ramp that produces high quality BECs in 10 times fewer iterations than a previously used online optimization technique. Furthermore, we show the internal model developed can be used to determine which parameters are essential in BEC creation and which are unimportant, providing insight into the optimization process of the system. (shrink)

Peter Brian Herrenden Birks 1941-2004Hugh Redwald Dacre 1914-2003William Hugh Clifford Frend 1916-2005John Andrew Gallagher 1919-1980Philip Grierson 1910-2006Stuart Newton Hampshire 1914-2004William McKane 1921-2004John Malcolm Sabine Pasley 1926-2004Benjamin John Pimlott 1945-2004Robert Duguid Forrest Pring-Mill 1925-2005John Edgar Stevens 1921-2002Peter Strawson 1919-2006Henry William Rawson Wade 1918-2004Alan Harold Williams 1927-2005Bernard Arthur Owen Williams 1929-2003John James Wymer 1928-2006.