We present a one per cent measurement of the cosmic distance scale from the detections of the baryon acoustic oscillations in the clustering of galaxies from the Baryon Oscillation Spectroscopic Survey, which is part of the Sloan Digital Sky Survey III. Our results come from the Data Release 11 sample, containing nearly one million galaxies and covering approximately 8500 square degrees and the redshift range 0.2 < z < 0.7. We also compare these results with those from the publicly released (...) DR9 and DR10 samples. Assuming a concordance Λ cold dark matter cosmological model, the DR11 sample covers a volume of 13 Gpc3 and is the largest region of the Universe ever surveyed at this density. We measure the correlation function and power spectrum, including density-field reconstruction of the BAO feature. The acoustic features are detected at a significance of over 7σ in both the correlation function and power spectrum. Fitting for the position of the acoustic features measures the distance relative to the sound horizon at the drag epoch, rd, which has a value of rd,fid = 149.28 Mpc in our fiducial cosmology. We find DV = at z = 0.32 and DV = at z = 0.57. At 1.0 per cent, this latter measure is the most precise distance constraint ever obtained from a galaxy survey. Separating the clustering along and transverse to the line of sight yields measurements at z = 0.57 of DA = and H =. Our measurements of the distance scale are in good agreement with previous BAO measurements and with the predictions from cosmic microwave background data for a spatially flat CDM model with a cosmological constant. © 2014 The Author Published by Oxford University Press on behalf of the Royal Astronomical Society. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Hypatia’s Daughters: Fifteen Hundred Years of Women Philosophers ed. by Linda Lopez McAllisterSue M. WeinbergLinda Lopez McAllister, editor. Hypatia’s Daughters: Fifteen Hundred Years of Women Philosophers. Bloomington and Indianapolis: Indiana University Press, 1996. Pp. xiv + 345. Cloth, $49.95. Paper, $22.50.Hypatia: born in the fourth century A.D.: philosopher, mathematician, astronomer, teacher; brutally murdered in Alexandria in 415 A.D—whether for holding religious views regarded as heretical or because she (...) was a woman who dared to be a scholar and teacher remains a matter of speculation. Today, she gives her name to the journal for feminist philosophy. She is a symbol for those women who, over the centuries, have struggled to be part of the philosophical life of their time.Until very recently, the centuries that separated Hypatia from the present were assumed to have been a philosophical desert for women. But times have changed. Hypatia’s Daughters is a sign of this change. It contains eighteen articles on seventeen philosophers: Hypatia; Hildegard of Bingen, Heloise, and Christine de Pisan from the Middle Ages; Elizabeth of Bohemia, Sor Juana de la Cruz, Anne Conway, Damaris Masham, Catharine Trotter, Belle van Zuylen and Mary Wollstonecraft from the seventeenth and eighteenth centuries; Anne Doyle Wheeler and Harriet Taylor Mill from the nineteenth; Charlotte Perkins Oilman, Edith Stein, Hannah Arendt, and Angela Davis from the late nineteenth century into contemporary times. Few are known as well as they deserve, but many names are familiar even to non-specialists. Their ideas, however, are another matter.The collection in no way constitutes a definitive selection of women philosophers; those discussed are not presented as the most significant women philosophers in the history of philosophy. (A different kind of study would be necessary for evaluations of that kind.) The women here studied have little in common as a group; they wrote on many topics of philosophical concern; their views and their supporting reasoning differ. Further, as the subjects of the articles differ in their ideas, so do the contributors’ approaches and their methods of studying those ideas differ. These differences are the strengths of a collection that is stimulating, enlightening, provocative. The following examples indicate their range.Andrea Nye examines the correspondence of Heloise and Abelard and, in a second article, of Elizabeth of Bohemia and Descartes. Heloise and Elizabeth are usually regarded as passive followers or, at best, no more than serious questioners seeking answers of their correspondents. Nye’s fresh look at the Heloise-Abelard correspondence finds not only important differences between two ways of thinking, but also sees already underlying their disagreement what she calls the “macroquestion” of philosophy’s future: philosophy as “a professional discipline independent of political or social concerns or... an ongoing critical and cultural discourse.” (25) Elizabeth’s persistent questions to Descartes reveal ideas that challenge his views, especially on moral issues and physiological-psychological [End Page 164] phenomena; these are views that have a greater complexity than the basic issue of mind-body interaction that is usually identified as central to their exchange.Writing on Harriet Taylor Mill, Jo Ellen Jacobs examines changing attitudes towards her subject, beginning with views of Taylor Mill’s contemporaries and moving through the decades into our time. She finds parallels between criticisms of Taylor Mill and attitudes towards the so-called intellectual woman. In times encouraging of women, Taylor Mill is regarded as having made important contributions to the development of J. S. Mill’s thinking, in addition to writing and speaking about her own ideas and positions that did not always follow those of J. S. Mill. In less encouraging times, her significance tends to be minimized.Hannah Arendt is not usually thought of as a feminist. Joanne Cutting-Gray, through her discussion of Arendt’s early book on Rahel Varnhagen, develops implications of that study for Arendt as a “feminist thinker,” in particular through her focus on “the politics of alterity.” Cutting-Gray finds in the Varnhagen biography “an analogy between Jewish and female alterity [that] can stretch our understanding of women and politics.” (281)And there is more, much more: Martha Brandt Bolton’s scholarly examination of the philosophical works... (shrink)

The Greeks and Romans have been charged with destroying the ecosystems within which they lived. In this book, however, M. D. Usher argues rather that we can find in their lives and thought the origin of modern ideas about systems and sustainability, important topics for humans today and in the future. With chapters running the gamut of Greek and Roman experience – from the Presocratics and Plato to Roman agronomy and the Benedictine Rule – Plato's Pigs brings together unlikely bedfellows, (...) both ancient and modern, to reveal surprising connections. Lively prose and liberal use of anecdotal detail, including an afterword about the author's own experiments with sustainable living on his sheep farm in Vermont, add a strong authorial voice. In short, this is a unique, first-of-its-kind book that is sure to be of interest to anyone working in Classics, environmental studies, philosophy, ecology, or the history of ideas. (shrink)

Placing Goodenough and Deacon’s “From Biology to Consciousness to Morality” against the background of the ethical naturalism of seventeenth- and eighteenth-century British moral theory, Yeager highlights the contribution the authors make to the moral sense tradition as well as indicating the limitations of such accounts of moral agency, judgment, and conduct. Yeager also identifies two strands of the essay that seem to open toward a more comprehensive account than the authors actually give. The first concerns the “interplay between self-interest and (...) pro-sociality,” and the other concerns the ethical implications of coevolution. On the latter point, the work of G. H. Mead is offered as an illuminating contrast. (shrink)

This study is concerned with processes for discovering new theories in science. It considers a computational approach to scientific discovery, as applied to the discovery of theories in cognitive science. The approach combines two ideas. First, a process-based scientific theory can be represented as a computer program. Second, an evolutionary computational method, genetic programming, allows computer programs to be improved through a process of computational trialand-error. Putting these two ideas together leads to a system that can automatically generate and improve (...) scientific theories. The application of this method to the discovery of theories in cognitive science is examined. Theories are built up from primitive operators. These are contained in a theory language that defines the space of possible theories. An example of a theory generated by this method is described. These results support the idea that scientific discovery can be achieved through a heuristic search process, even for theories involving a sequence of steps. However, this computational approach to scientific discovery does not eliminate the need for human input. Human judgment is needed to make reasonable prior assumptions about the characteristics of operators used in the theory generation process, and to interpret and provide context for the computationally generated theories. (shrink)

A general framework by which dynamic interactions within a protein will promote the necessary series of structural changes, or “conformational cycle,” required for function is proposed. It is suggested that the free‐energy landscape of a protein is biased toward this conformational cycle. Fluctuations into higher energy, although thermally accessible, conformations drive the conformational cycle forward. The amino acid interaction network is defined as those intraprotein interactions that contribute most to the free‐energy landscape. Some network connections are consistent in every structural (...) state, while others periodically change their interaction strength according to the conformational cycle. It is reviewed here that structural transitions change these periodic network connections, which then predisposes the protein toward the next set of network changes, and hence the next structural change. These concepts are illustrated by recent work on tryptophan synthase. Disruption of these dynamic connections may lead to aberrant protein function and disease states. (shrink)