It is shown that the Riemannian curvature of the 3-dimensional hypersurfaces in space-time, described by the Wilson loop integral, can be represented by a quaternion quantum operator induced by the SU(2) gauge potential, thus providing a justification for quaternion quantum gravity at the Tev energy scale.

"Neuroscience and Philosophy" begins with an excerpt from "Philosophical Foundations of Neuroscience," in which Maxwell Bennett and Peter Hacker question the ...

Although rationing of scarce health-care resources is inevitable in clinical practice, there is still limited and scattered information about how physicians perceive and execute this bedside rationing (BSR) and how it can be performed in an ethically fair way. This review gives a systematic overview on physicians’ perspectives on influences, strategies, and consequences of health-care rationing. Relevant references as identified by systematically screening major electronic databases and manuscript references were synthesized by thematic analysis. Retrieved studies focused on themes that fell (...) under three major headings: (i) conditions and influences of BSR, (ii) strategies of BSR, and (iii) consequences of BSR. The range of themes indicates that physicians’ rationing behavior is highly variable, strongly influenced by context-related factors, and consists mainly of implicit rationing strategies. Torn between patient advocacy and the obligation to contain costs, physicians experience various role conflicts. The development of explicit rationing strategies seems necessary to avoid arbitrary BSR and allow a fair allocation of health-care resources. (shrink)

In lieu of an abstract, here is a brief excerpt of the content: Classics and Complexity in Walden’s “Spring” M. D. USHER In 1843, two years before Henry Thoreau built his cabin at Walden Pond, the Fitchburg Railroad laid down tracks through the woods near the Pond for its line connecting Boston to Fitchburg. The original Fitchburg Line, at 54 miles long, was, until 2010, the longest run in the present -day MBTA Commuter Rail system. And it is one of (...) the oldest railways in New England. By 1900, fortunes swelled and the Fitchburg’s Hoosac Tunnel Line took passengers and goods westward toward Chicago. The Lake Champlain Route connected Boston to points north like Burlington, Vermont. (See Figure 1.) arion 27.1 spring/summer 2019 Figure 1 (left): Advertisement for the Hoosac Tunnel Route in The New England Magazine (Vol. 21, Issue 6, February, 1900). Figure 2 (right): Herbert Wendell Gleason. The Fitchburg Railroad and Walden Pond in winter, Concord, Mass., March 24, 1920. Courtesy Concord Free Public Library. The Railroad was literally a fixture in Thoreau’s landscape. Its tracks pass remarkably close to Walden Pond (Figure 2), and the Fitchburg Line—both its reality and the specter of it—is practically a character in his writing: “I usually go to the village along its causeway, and am, as it were, related to society by this link,” Thoreau writes in “Sounds,” a chapter of Walden that contains what must be one of the most picturesque odes (or laments) to rail travel and commerce in all of American literature: The engine’s whistle, Thoreau complains, pierces the still silence of his idyllic retreat like a screaming hawk circling a farmer’s field, its billows of steam an ominous harbinger of “this travelling demi-god, this cloud-compeller.”1 Thoreau’s frequent, customary walks into Concord along the railroad tracks took him through a heavily excavated stretch of the line known as the Deep Cut, to which he returned again and again each year in early spring, even after leaving the cabin, to observe and to record his observations. The leaf-shaped sand flows and trickling surface erosion caused by melting frost in the banks of the Deep Cut are elaborately described in Thoreau’s chapter in Walden entitled “Spring,” what Laurence Buell calls the “high point of Thoreau’s epic.”2 And yet, in spite of the universal acclaim of this passage as a literary tour de force, it has not received the full attention it deserves. What warrants fresh consideration first and foremost is “Spring”’s deep-rootedness in classical sources. Many classical influences, allusions, and a good deal of etymological word play have gone so far unnoticed. The chapter is also important because it describes, by intimation, what contemporary scientists now call emergence. Emergent phenomena are properties or behaviors that arise in systems as a result of complex, dynamic interactions amongst constituent parts, including changes to a system brought about by human interventions3—not only, e.g., climate change and wildfires, but also traffic patterns and terrorist networks; kidney function in the body; the rings of Saturn. As he tries to capture the essence of the 114 classics and complexity in WALDEN’s “spring” Deep Cut and interpret its significance, Thoreau adumbrates this concept, but also grapples ingeniously with broader issues of perennial concern—the relationship of Nature to Culture, for example, of Wilderness to Civilization, of Science to the Humanities—making “Spring” not only a probing work of eco-criticism and environmental philosophy, but of scientific reflection and poetic experiment as well. In short, Thoreau’s “Spring” is that rare work of classical reception that transmits both literary and scientific insight. Perhaps at this point, in lieu of accolades, it is best to let Thoreau start speaking for himself. What I offer in the following pages is a commentary on the Deep Cut passage from “Spring.” Classical references and aspects of systems theory will be explained and contextualized as they emerge, as it were, from Thoreau’s text. The whole chapter corresponds to pages 289–308 in Cramer’s edition of Walden—26 paragraphs all told, of which only the relevant ones are printed and annotated here. (Transitions and extraneous material are briefly summarized, as needed, in paraphrase... (shrink)

More than one third of the human brain is devoted to the processes of seeing - vision is after all the main way in which we gather information about the world. But human vision is a dynamic process during which the eyes continually sample the environment. Where most books on vision consider it as a passive activity, this book is unique in focusing on vision as an 'active' process. It goes beyond most accounts of vision where the focus is on (...) seeing, to provide an integrated account of seeing AND looking. The book starts by pointing out the weaknesses in our traditional approaches to vision and the reason we need this new approach. It then gives a thorough description of basic details of the visual and oculomotor systems necessary to understand active vision. The book goes on to show how this approach can give a new perspective on visual attention, and how the approach has progressed in the areas of visual orienting, reading, visual search, scene perception and neuropsychology. Finally, the book summarises progress by showing how this approach sheds new light on the old problem of how we maintain perception of a stable visual world. Written by two leading vision scientists, this book will be valuable for vision researchers and psychology students, from undergraduate level upwards. (shrink)

Citizens today are increasingly expected to be knowledgeable about and prepared to engage with biomedical knowledge. In this article, I wish to reframe this ‘public understanding of science’ project, and place fresh emphasis on public understandings of research: an engagement with the everyday laboratory practices of biomedicine and its associated ethics, rather than with specific scientific facts. This is not based on an assumption that non-scientists are ‘ignorant’ and are thus unable to ‘appropriately’ use or debate science; rather, it is (...) underpinned by an empirically-grounded observation that some individuals may be unfamiliar with certain specificities of particular modes of research and ethical frameworks, and, as a consequence, have their autonomy compromised when invited to participate in biomedical investigations. Drawing on the perspectives of participants in my own sociological research on the social and ethical dimensions of neuroscience, I argue that public understanding of biomedical research and its ethics should be developed both at the community level and within the research moment itself in order to enhance autonomy and promote more socially robust science. Public bioethics will have to play a key role in such an endeavour, and indeed will contribute in important ways to the opening up of new spaces of symmetrical engagement between bioethicists, scientists and wider publics—and hence to the democratisation of the bioethical enterprise. (shrink)

This book studies the interfaces of ethics, economics, and politics. Public policy issues involve all three of these subjects. Although it may be seen as suggesting the nucleus of a joint university course, the book is accessible to and should interest all those concerned with political decisions. Any such decision needs a criterion for judging whether one action or outcome is better than another. Even a dictator must to some extent be concerned about the economic welfare of the citizens; and (...) a democratic government more so. But how is a person's economic welfare to be judged? Furthermore, any political decision affects the economic welfare of different people differently. How then is the welfare of a community to be judged? This is an ethical question. Underlying any coherent public policy there must be a relevant moral code. (shrink)

While much has been written on the cultural and intellectual antecedents that gave rise to Carolus Linnaeus?s herbarium and his Systema Naturae, the tools that he used to transform his raw observations into nomenclatural terms and categories have been neglected. Focusing on the Philosophia Botanica, the popular classification handbook that he published in 1751, it can be shown that Linnaeus cleverly ordered and reordered the work by employing commonplacing techniques that had been part of print culture since the Renaissance. Indeed, (...) the functional adaptability of commonplace heads allowed him to split and combine the book?s chapters and tables and played a notable conceptual role in the way in which he spatialized words and, to a certain extent, specimens. (shrink)

Legislation that authorises controversial organ procurement strategies but ignores respect for autonomy is flawed in principle and predictably unworkable in practiceThe UK Human Tissue Act 2004,1 designed to regulate all activity involving human tissue, organs, or bodies, was introduced in the House of Commons in December 2003, received Royal Assent on 15 November 2004,2 and has been partially implemented by Commencement Orders from April 2005. The new act, which repeals and replaces the Human Tissue Act 1961, the Anatomy Act 1984, (...) and the Human Organ Transplants Act 1989, has its origins in events of serious public concern, namely the retained organs scandals at Bristol Royal Infirmary3 and the Royal Liverpool Childrens’ Hospital.4 The act is correspondingly dominated by regulation of postmortem examinations and retention of human tissue, with consistent emphasis on the need for fully informed consent. Compliance with these requirements is now mandatory with the threat of up to three years’ imprisonment and/or fines for any deviation.The impact of the original proposals within the bill on research and the clinical practice of pathology have been carefully considered and documented,5 with subsequent amendments to ameliorate professional concerns.6 The act, however, also carries significant implications for medical practice in areas where donor recruitment for transplantation can take place, and representations on these aspects during readings of the bill7 have produced neither clarification, justification, nor amendment within the final legislation.Section 43 will make it lawful for hospital authorities “to take steps for the purpose of preserving the part for use for transplantation and to retain the body for that purpose”. The original explanatory notes for the bill8 while it proceeded through parliament implied that such action, prior to consent to transplantation being sought, was then lawful, clause 44 as section 43 …. (shrink)

Objective: The field of clinical ethics is relatively new and expanding. Best practices in clinical ethics against which one can benchmark performance have not been clearly articulated. The first step in developing benchmarks of clinical ethics services is to identify and understand current practices.Design and setting: Using a retrospective case study approach, the structure, activities, and resources of nine clinical ethics services in a large metropolitan centre are described, compared, and contrasted.Results: The data yielded a unique and detailed account of (...) the nature and scope of clinical ethics services across a spectrum of facilities. General themes emerged in four areas—variability, visibility, accountability, and complexity. There was a high degree of variability in the structures, activities, and resources across the clinical ethics services. Increasing visibility was identified as a significant challenge within organisations and externally. Although each service had a formal system for maintaining accountability and measuring performance, differences in the type, frequency, and content of reporting impacted service delivery. One of the most salient findings was the complexity inherent in the provision of clinical ethics services, which requires of clinical ethicists a broad and varied skill set and knowledge base. Benchmarks including the average number of consults/ethicist per year and the hospital beds/ethicist ratio are presented.Conclusion: The findings will be of interest to clinical ethicists locally, nationally, and internationally as they provide a preliminary framework from which further benchmarking measures and best practices in clinical ethics can be identified, developed, and evaluated. (shrink)

In De Partibus Animalium I Aristotle sets out his philosophy of biology, discussing cause, necessity, soul, genus, and species, definition by logical division, and general methodology. In De Generatione Animalium I he applies his hylomorphic philosophy to the problem of animal reproduction. The translation is close, and includes passages from De Generatione Animalium II which complete Aristotle's theory of reproduction. The notes interpret Aristotle's arguments and discuss his views on major issues such as natural teleology. The original edition was published (...) in 1972. (shrink)

_The purpose_ of this article is to explain in religious, secular, and post-secular contexts the functional potential of conceptualizing the miracle as a text or message with a motivational effect. _Theoretical basis._ Max Weber, Ernst Tugendhat, Alexander Geppert and Till Kössler analysed the processes of enchantment and disenchantment of the world on a philosophical basis. The representatives of the Frankfurt school (Theodor Adorno, Max Horkheimer, Walter Benjamin) and their followers describe the cultural processes of post-secularism (Jürgen Habermas, Peter Sloterdijk) in (...) detail. The logic of cultural and social representation of amazing events and their descriptions can be realized by combining hermeneutic analysis with a functionalist approach based on the model of Niklas Luhmann and the discursive ethics of Karl-Otto Apel. _Originality._ Desired cultural, social and political situations in society often arise unexpectedly and suddenly, which provokes to characterize them as a miracle. However, at the basis of the emergence of such situations are the rules of social communication, in particular those that provide for asymmetric communication with questions that await answers. A miracle appears at the moment of transformation of asymmetric communication into a symmetrical one: each specific miracle-phenomenon needs its own metaphorical understanding and interpretation as a message. _Conclusions._ The article proposes an analysis of miracle phenomenon in its cosmological, anthropological and educational implications. Some tendencies fixed by communicative turn of the contemporary philosophy are also contributed to considering the miracle in its objective and subjective representations. The semantics of the miracle is analysed according to the relevant problem fields. The functionality of miracle is examined on its ability to show orientation for the contemporary societies with their tendency to post-secularity. The fusion of Pre-modernity and Late Modernity is taking into account when the semantics of miracle is described accordingly to their communication functionality. The enchanting and disenchanting dialectic is explained on semantics of miracle as a world and cosmic events. (shrink)

In a brief article under the present title, Adam Parry raised a simple but profound question: were there certain things that the inherited vocabulary of oral poets did not allow them to sayF; The mere raising of this question, whatever his answer, is enough to make the article one of the more important contributions to Homeric studies in the last fifty years. As it happens, his answer was affirmative, and it has not been contested. Contested it will now be.

Among bioethicists and members of the public, genetics is often regarded as unique in its ethical challenges. As medical researchers and clinicians increasingly combine genetic information with a range of non-genetic information in the study and clinical management of patients with common diseases, the unique ethical challenges attributed to genetics must be re-examined. A process of genetic routinisation that will have implications for research and clinical ethics, as well as for public conceptions of genetic information, is constituted by the emergence (...) of new forms of genetic medicine, in which genetic information is interpreted in a multifactorial frame of reference. Although the integration of genetics in medical research and treatment may be a helpful corrective to the mistaken assumptions of genetic essentialism or determinism, the routinisation of genetics may have unintended consequences for the protection of genetic information, perceptions of non-genetic information and the loss of genetic research as a laboratory for exploring issues in research and clinical ethics. Consequently, new ethical challenges are presented by the increasing routinisation of genetic information in both biomedical and public spheres. (shrink)

Discusses the metaphysics of the iterative conception of set.

To avoid misinterpretations one should substitute the ambiguous notion of 'new disease' with 'emerging disease'. A disease can be classified emergent in at least five dif férent historical situations; 1) it existed before it could be first identified but was overlooked from a médical point of view because it could not be conceptualized as a nosological entity; 2) it existed but was not noticed until a quantitative and/or qualitative change in its mani festations; 3) it did not exist in a (...) particular région of the world before its introduction from other régions; 4) it never existed in a human population but only in an animal population; 5) it is completely new - the triggering germ and/or necessary environmental conditions did not exist prior to the first clinical manifestations. A sériés of historical examples illustrate this classification. (shrink)

Statius' Silvae owe their preservation to a copy made in Switzerland for Poggio in 1417 by a local scribe. This copy, brought to light by G. Loewe in 1879, was recognized for what it was by A.C. Clark and A. Klotz twenty years later, and since then its descendants have had at best historical interest. To extract much of that from them an editor must endeavour to survey all the extant material, and A. Marastoni in the recent Teubner edition claims (...) to have done just that: ‘omnes manuscriptos libros veteresque editiones iterum contuli’ he says at the opening of his preface, and the reviewers echo his words. (shrink)

When did Livy write his history? How many books had it, and what did the lost ones cover? Such answers as can be given to these questions come almost entirely from the one extant summary, the Periochae. The manuscripts of the Periochae disagree, however, on a matter of considerable interest: out of a hundred or so, only three, supported by a lost fourth, have been cited as adding to the title Ex libro CXXI the subtitle qui editus post excessum Augusti (...) dicitur. When the latest editor, P. Jal in the Collection Budé , declares himself unconvinced of its authenticity , he leaves the reader to decide whether authenticity means truth, authorial origin, or presence in the archetype; but whatever it means, seeds of suspicion have been sown. (shrink)

Background: Hospital nurses are frequently the first care givers to receive a patient’s request for euthanasia or physician-assisted suicide (PAS). In France, there is no consensus over which medical practices should be considered euthanasia, and this lack of consensus blurred the debate about euthanasia and PAS legalisation. This study aimed to investigate French hospital nurses’ opinions towards both legalisations, including personal conceptions of euthanasia and working conditions and organisation. Methods: A phone survey conducted among a random national sample of 1502 (...) French hospital nurses. We studied factors associated with opinions towards euthanasia and PAS, including contextual factors related to hospital units with random-effects logistic models. Results: Overall, 48% of nurses supported legalisation of euthanasia and 29%, of PAS. Religiosity, training in pallative care/pain management and feeling competent in end-of-life care were negatively correlated with support for legalisation of both euthanasia and PAS, while nurses working at night were more prone to support legalisation of both. The support for legalisation of euthanasia and PAS was also weaker in pain treatment/palliative care and intensive care units, and it was stronger in units not benefiting from interventions of charity/religious workers and in units with more nurses. Conclusions: Many French hospital nurses uphold the legalisation of euthanasia and PAS, but these nurses may be the least likely to perform what proponents of legalisation call “good” euthanasia. Improving professional knowledge of palliative care could improve the management of end-of-life situations and help to clarify the debate over euthanasia. (shrink)