Word in noise identification is facilitated by acoustic differences between target and competing sounds and temporal separation between the onset of the masker and that of the target. Younger and older adults are able to take advantage of onset delay when the masker is dissimilar to the target word, but only younger adults are able to do so when the masker is similar. We examined the neural underpinning of this age difference using cortical evoked responses to words masked by either (...) Babble or Noise when the masker preceded the target word by 100 or 600 ms in younger and older adults, after adjusting the signal-to-noise ratios to equate behavioural performance across age groups and conditions. For the 100 ms onset delay, the word in noise elicited an acoustic change complex response that was comparable in younger and older adults. For the 600 ms onset delay, the ACC was modulated by both masker type and age. In older adults, the ACC to a word in babble was not affected by the increase in onset delay whereas younger adults showed a benefit from longer delays. Hence, the age difference in sensitivity to temporal delay is indexed by early activity in the auditory cortex. These results are consistent with the hypothesis that an increase in onset delay improves stream segregation in younger adults in both noise and babble, but only in noise for older adults and that this change in stream segregation is evident in early cortical processes. (shrink)

This collection gathers a set of central papers from the emerging area of ethics and climate change.

The evidence-based medicine movement advocates basing all medical decisions on certain types of quantitative research data and has stimulated protracted controversy and debate since its inception. Evidence-based medicine presupposes an inaccurate and deficient view of medical knowledge. Michael Polanyi’s theory of tacit knowledge both explains this deficiency and suggests remedies for it. Polanyi shows how all explicit human knowledge depends on a wealth of tacit knowledge which accrues from experience and is essential for problem solving. Edmund Pellegrino’s classic treatment of (...) clinical judgment is examined, and a Polanyian critique of this position demonstrates that tacit knowledge is necessary for understanding how clinical judgment and medical decisions involve persons. An adequate medical epistemology requires much more qualitative research relevant to the clinical encounter and medical decision making than is currently being done. This research is necessary for preventing an uncritical application of evidence-based medicine by health care managers that erodes good clinical practice. Polanyi’s epistemology shows the need for this work and provides the structural core for building an adequate and robust medical epistemology that moves beyond evidence-based medicine. (shrink)

Most clinicians take for granted a simple, reductionist understanding of medical knowledge that is at odds with how they actually practice medicine; routine medical decisions incorporate more complicated kinds of information than most standard accounts of medical reasoning suggest. A better understanding of the structure and function of knowledge in medicine can lead to practical improvements in clinical medicine. This understanding requires some familiarity with epistemology, the study of knowledge and its structure, in medicine. Michael Polanyi's theory of tacit knowing (...) is advanced as the basis for developing a more accurate understanding of medical knowledge. Tacit knowing, which explores the taken-for-granted background knowledge that underlies all human knowing, is explained in detail with a focus on its relevance for clinical medicine. The implications of recognizing tacit knowing in medicine and medical decisions are discussed. These include the ability to explain the importance of the clinical encounter in medical practice, mechanisms for analysing patient and doctor as persons, and the need for humility given the uncertainty that the tacit dimension injects into all medical decisions. This more robust medical epistemology allows clinicians to better articulate the nature and importance of patient-centred care, to avoid pitfalls inherent in reductionist approaches to medical knowledge, and to think more clearly about the relationships between medicine and health care at the individual and population levels. (shrink)

This paper starts with an apparently provocative question – can we call the 2019 Water Revolution in Hong Kong a lesson of emancipatory education which awakens students’ critical consciousn...

A collection of seminal articles in climate ethics and climate justice.

This is a new release of the original 1941 edition.

Harry Collins’ book Tacit and Explicit Knowledge seeks to clarify the concept of tacit knowledge made famous by Michael Polanyi. Collins’ tripartite taxonomy of tacit knowledge is explained using illustrative examples from clinical medicine. Collins focuses on distinguishing the kinds of tacit knowledge that can (in principle) be made wholly explicit from the kinds of tacit knowledge that are inescapably tacit. Polanyi’s writings, on the other hand, emphasize the process of tacit knowing. Collins’ investigation of tacit knowledge makes an important (...) scholarly contribution that is distinct from and complementary to investigations that focus on tacit knowing. (shrink)

The climate change problem must be thought of in terms of risk, not certainty. There are many well-established elements of the problem that carry considerable confidence whereas some aspects are speculative. Therefore, the climate problem emerges not simply as a normal science research issue, but as a risk management policy debate as well. Descriptive science entails using empirical and theoretical methods to quantify the two factors that go into risk assessment: “What can happen?” and “What are the odds?” (Probability x (...) Consequences). Policymakers should, in turn, take that information and use it to make value judgments about what is safe, what is dangerous, what is fair. To make these judgments, policymakers need to know the probabilities that experts assign to various possible outcomes in order to make risk management decisions to hedge against unsafe, dangerous and unfair outcomes. The climate debate needs to be reframed away from absolute costs—or benefits—into relative delay times to achieve specific caps or to avoid crossing specific agreed “dangerous” climate change thresholds. Even in most optimistic scenarios, CO2 will stabilize at a much higher concentration than it has reached today, and temperature will rise accordingly. It will take even longer for sea level rise from thermal expansion and the melting of polar ice to occur, but what is most problematic is that how we handle our emissions now and in the next five decades preconditions the sustainability of the next millennium. (shrink)

In recent years, the opioid crisis in the United States has sparked significant discussion on doctor–patient interactions concerning chronic pain treatments, but little to no attention has been given to investigating the vocal aspects of patient talk. This exploratory sociolinguistic study intends to fill this knowledge gap by employing prosodic discourse analysis to examine context-specific linguistic features used by the interlocutors of two distinct medical interactions. We found that patients employed both low pitch and creak as linguistic resources when describing (...) chronic pain, narrating symptoms and requesting opioids. The situational use of both features informs us about the linguistic ways in which patients frame fraught issues like chronic pain in light of the current opioid crisis. This study expands the breadth of phonetic analysis within the domain of discourse analysis, serving to illuminate discussions surrounding the illocutionary role of the lower vocal tract in expressing emotions. (shrink)

In this article we propose to reflect on the discrepancies around the horizon of appearing in phenomenology, starting with Henry and Patočka. In this sense, it is tried to show, on the one hand, how it is that for the French philosopher Life would be the fundamental phenomenon to be studied, Life that would have as an essential character to be absolute, therefore, different from any foundation that folds it to a external horizon that divides that absolute character. For (...) its part, it will seek to show how the Czech thinker understands that the phenomenological procedure should be guided by an asubjective principle, this in the interest of criticizing the subjective guarantor of correlational intentionality. This asubjective tendency would be completed in the attempt to refer appearing to the field of appearing, towards an infinite horizon of appearance, which would not need to be sustained by the immanence of consciousness. In short, an attempt will be made to show how absolute and infinite act respectively as the negation and affirmation of the horizon of appearing in phenomenology. (shrink)

The recent piece ‘When Does Catholic Social Teaching Imply a Duty to be Vaccinated for the Common Good?’ by Stephen M.A. Bow (29 [4], 304–321) provides 12 criteria for the duty to vaccinate in acco...

© 2017. The American Astronomical Society. All rights reserved.We present new observations of the low-mass companion to HD 984 taken with the Gemini Planet Imager as a part of the GPI Exoplanet Survey campaign. Images of HD 984 B were obtained in the J and H bands. Combined with archival epochs from 2012 and 2014, we fit the first orbit to the companion to find an 18 au orbit with a 68% confidence interval between 14 and 28 au, an eccentricity (...) of 0.18 with a 68% confidence interval between 0.05 and 0.47, and an inclination of 119°with a 68% confidence interval between 114°and 125°. To address the considerable spectral covariance in both spectra, we present a method of splitting the spectra into low and high frequencies to analyze the spectral structure at different spatial frequencies with the proper spectral noise correlation. Using the split spectra, we compare them to known spectral types using field brown dwarf and low-mass star spectra and find a best-fit match of a field gravity M6.5 ±1.5 spectral type with a corresponding temperature of K. Photometry of the companion yields a luminosity of log=2.88 ± 0.07 dex with DUSTY models. Mass estimates, again from DUSTY models, find an age-dependent mass of 34 ±1 to 95 ±4 M Jup. These results are consistent with previous measurements of the object. (shrink)

James Fitzjames Stephen is remembered as a judge, legal historian, and the author of Liberty, Equality, Fraternity, a reply to J. S. Mill's late works. He is less well remembered for his journalism, though it earned him a reputation among his contemporaries as one of the most trenchant writers on topics ranging across the social, religious, political, moral, and philosophical questions debated in his time. It was largely in his journalistic writing that Stephen set forth his views on (...) these questions. Despite such a reputation, however, only a small proportion of this writing was collected during his lifetime, and very little has been republished since his death.Selected Writings of James Fitzjames Stephen: On Society, Religion, and Government includes thirty-five essays expressing Stephen's views on the questions of his day, which have not lost their interest in ours. He wrote at a time when much of the finest writing in English was published in periodicals, often anonymously. The essays in this volume are drawn mostly from Stephen's unsigned contributions to the Saturday Review, with additions, both signed and unsigned, from other periodicals, extending from the 1850s to the 1880s. (shrink)

Steven Schneider The Means and Ends of Screen Violence _Film-Philosophy_, vol. 3 no. 18, April 1999.

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)

The term 'agnostic' was probably coined by T. H. Huxley during a speech to the Metaphysical Society in 1869. From the Greek 'agnostos', 'unknown', it was derived from St Paul's mention of an Athenian altar inscribed 'to the unknown god'. With these overtones of ancient philosophy, agnosticism became the tag of an emergent school of thought which posited that the existence of anything beyond the material and measurable should be considered unknowable. In this collection of seven essays, first published as (...) one volume in 1893, Leslie Stephen makes a study of the 'unknown'. Across the essays, he presents arguments for the intrinsic agnosticism of many of the basic tenets of deism, explores the way in which humans construct dreams and realities, and examines the relationship between physics and philosophy. This readable and entertaining book will be of interest to students of both theology and philosophy. (shrink)

What is a medium? Why is there always a middle? Can media produce 'immediacy'? Henri Bergson recognized mediation as the central philosophical problem of modernity. This book traces his influence on the 'media philosophies' of Gilles Deleuze, Marshall McLuhan, Walter Benjamin and Michel Serres.

Selection bias? Content Type Journal Article DOI 10.1007/s11016-010-9490-4 Authors Henry M. Cowles, Program in History of Science, Princeton University, Princeton, NJ 08544, USA Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796.

In exploring the nature of excess relative to a phenomenology of the limit, _Testing the Limit _ claims that phenomenology itself is an exploration of excess. What does it mean that "the self" is "given"? Should we see it as originary; or rather, in what way is the self engendered from textual practices that transgress—or hover around and therefore within—the threshold of phenomenologial discourse? This is the first book to include Michel Henry in a triangulation with Derrida and Levinas (...) and the first to critique Levinas on the basis of his interpolation of philosophy and religion. Sebbah claims that the textual origins of phenomenology determine, in their temporal rhythms, the nature of the subjectivation on which they focus. He situates these considerations within the broader picture of the state of contemporary French phenomenology, in order to show that these three thinkers share a certain "family resemblance," the identification of which reveals something about the traces of other phenomenological families. It is by testing the limit within the context of traditional phenomenological concerns about the appearance of subjectivity and ipseity that Derrida, Henry, and Levinas radically reconsider phenomenology and that French phenomenology assumes its present form. (shrink)