The thesis examines the philosophical implications of the computational theory of early vision developed by Marr. According to Marr, early visual processes consist of sequences of "modular" computational mechanisms. These processes rely on functional relations between rates of change in stimulus magnitudes which result from certain contingent, global properties--natural constraints--of the physical world. ;Marr argues that explanations of early vision must have three distinct levels of description: computational, algorithmic and physical. In Chapter 1 I defend the explanatory significance of this (...) distinction in levels. In fulfilling its role in describing the dependence of visual processes on natural constraints, the computational level forms an autonomous level of description in the sense that it is unaffected by the computational steps at the other levels. ;In Chapter 2 I discuss the implications of natural constraints for the issues of individualism and methodological solipsism. I conclude that Mart's theory is nonindividualistic in the sense that visual content does not supervene on neural properties. However, this merely reflects the fact that different computational theories may be selected for the same system. Importantly, Marr's theory does not violate methodological solipsism since interpretations within theories must supervene on neural properties. ;In Chapter 3 I argue from the results of Chapters 1 and 2 that psychological explanation does not reduce to neurophysiology. This conclusion does not follow from the functionalist argument against physicalism, which is based on an incorrect account of computational theories. Rather the conclusion reflects the explanatory incompleteness of neurophysiological theories given the autonomous role of the computational level. ;In Chapter 4 I look in detail at the arguments for a "language of thought" as they apply to early vision. I distinguish two versions of the language of thought hypothesis, one weaker than the other. I conclude that the stronger version, which claims that a cognitive system is "program-using", is false of early vision because of the role of natural constraints. The weaker claim that cognitive processes employ symbolic transformations is true of the computational-level theory of early vision, but there is insufficient evidence to establish the claim at the algorithmic level. (shrink)

Alan C. LoveDarwinian calisthenicsAn athlete engages in calisthenics as part of basic training and as a preliminary to more advanced or intense activity. Whether it is stretching, lunges, crunches, or push-ups, routine calisthenics provide a baseline of strength and flexibility that prevent a variety of injuries that might otherwise be incurred. Peter Bowler has spent 40 years doing Darwinian calisthenics, researching and writing on the development of evolutionary ideas with special attention to Darwin and subsequent filiations among scientists (...) exploring evolution . Therefore, we would expect that when Bowler engages in a counterfactual history—imagining a world without Darwin—he is able to avoid historical injury and generate novel insights. My assessment is that the results are mixed. Before we can see why, it is necessary to walk briskly through the main contours of his argument.Bowler begins with an apologia for a counterfactual appr .. (shrink)

That there is a heritable or familial component of susceptibility to chronic non‐communicable diseases such as type 2 diabetes, obesity and cardiovascular disease is well established, but there is increasing evidence that some elements of such heritability are transmitted non‐genomically and that the processes whereby environmental influences act during early development to shape disease risk in later life can have effects beyond a single generation. Such heritability may operate through epigenetic mechanisms involving regulation of either imprinted or non‐imprinted genes but (...) also through broader mechanisms related to parental physiology or behaviour. We review evidence and potential mechanisms for non‐genomic transgenerational inheritance of ‘lifestyle’ disease and propose that the ‘developmental origins of disease’ phenomenon is a maladaptive consequence of an ancestral mechanism of developmental plasticity that may have had adaptive value in the evolution of generalist species such as Homo sapiens. BioEssays 29: 145–154, 2007. © 2007 Wiley Periodicals, Inc. (shrink)

This collection of essays endeavors to generate a dialogue between Eric Voegelin and other prominent twentieth-century thinkers and explore some of the more perplexing issues in contemporary political theory. Each essay rests on the underlying question: is it possible or desirable to construct or discover political foundations without resorting to metaphysical or essentialist constructs? The introduction focuses on the two nineteenth-century thinkers, Nietzsche and Husserl, who have framed the debate about modernity and postmodernity; thereafter, the book examines Voegelin's ideas as (...) compared to those of other twentieth-century thinkers. Discussed within the volume are Levinas and the precedence of ethics, Ricoeur's theory of narrative representation, Deleuze and the philosophy of immanence, Voegelin's relationship to a speech- dimension theory of human behavior, and Patocka's theory of pre- metaphysical transcendence in Socrates. What will impress scholars most about this collection is the provocative dialogue created between Voegelin and other major thinkers of postmodernism that addresses the issue of establishing foundations without foundationalism. (shrink)

Ambient assisted living technologies can provide assistance and support to persons with dementia. They might allow them the possibility of living at home for longer whilst maintaining their comfort and security as well as offering a way towards reducing the huge economic and personal costs forecast as the incidence of dementia increases worldwide over coming decades. However, the development, introduction and use of AAL technologies also trigger serious ethical issues. This paper is a systematic literature review of the on-going scholarly (...) debate about these issues. More specifically, we look at the ethical issues involved in research and development, clinical experimentation, and clinical application of AAL technologies for people with dementia and related stakeholders. In the discussion we focus on: the value of the goals of AAL technologies, the special vulnerability of persons with dementia in their private homes, the complex question of informed consent for the usage of AAL technologies. (shrink)

Alternative theories to quantum mechanics motivate important fundamental tests of our understanding and descriptions of the smallest physical systems. Here, using spontaneous parametric downconversion as a heralded single-photon source, we place experimental limits on a class of alternative theories, consisting of classical field theories which result in power-dependent normalized correlation functions. In addition, we compare our results with standard quantum mechanical interpretations of our spontaneous parametric downconversion source over an order of magnitude in intensity. Our data match the quantum mechanical (...) expectations, and do not show a statistically significant dependence on power, limiting quantum mechanics alternatives which require power-dependent autocorrelation functions. (shrink)

The consideration of deliberate versus automatic processing of numeric representations is important to math education, memory for numbers, and decision-making. In this commentary, we address the possible roles for numeric representations in such higher-level cognitive processes. Current evidence is consistent with important roles for both automatic and deliberative processing of the representations.

Writing about the intellectual development of a philosopher is a delicate business. My own endeavor to reinterpret the influence of Hegel on Dewey troubles some scholars because, they believe, I make Dewey seem less original.1 But if, like Dewey, we overcome Cartesian dualism, placing the development of the self firmly within a complex matrix of social processes, we are forced to reexamine, without necessarily surrendering, the notion of individual originality, or what Neil Gross calls “discourse[s] of creative genius.”2 To use (...) a mundane example, I can recall several conversations with Dewey scholars about his dislike for his home state of Vermont, all of which revolved around personal reasons he may.. (shrink)

In mammals, the Y chromosome induces testis formation and thus male sexual development; in the absence of a Y chromosome, gonads differentiate into ovaries and female development ensues. Molecular genetic studies have identified the Y‐located testis determining gene SRY as well as autosomal and X‐linked genes necessary for gonadal development. The phenotypes resulting from mutation of these genes, together with their patterns of expression, provide the basis for establishing a hierachy of genes and their interactions in the mammalian sex determination (...) pathway. (shrink)

The prospect of using genome technologies to modify the human germline has raised profound moral disagreement but also emphasizes the need for wide-ranging discussion and a well-informed policy response. The Hinxton Group brought together scientists, ethicists, policymakers, and journal editors for an international, interdisciplinary meeting on this subject. This consensus statement formulated by the group calls for support of genome editing research and the development of a scientific roadmap for safety and efficacy; recognizes the ethical challenges involved in clinical reproductive (...) applications of genome editing but, importantly, rejects the idea that human reproductive germline modification is necessarily morally unacceptable; and highlights the importance of meaningful engagement in discussions of genome editing and the development of regulation and oversight mechanisms to govern future uses of such technologies. (shrink)

Critical legal studies is one of the most challenging developments in the contemporary study of law. Drawing heavily on the radical political culture of the period since the 1960s, critical legal studies assents the necessity of a politics of law - a politics which sees law, not as something apart, but as engaged in the multitude of arguments, battles and struggles which produce the human condition. Such a committment decisively rejects the dominant tradition of Anglo-American legal scholarship, the expository orthodoxy (...) or, more crudely, the 'black-letter law' approach. The essays in this book provide the first wide ranging exploration of the aims and scope of critical legal studies in Britain. They draw on a diversity of intellectual traditions, including feminism, Marxism, critical theory and deconstruction and explore the implications of the critical approach for important areas such as property, contract, company, and labour law. (shrink)

While researchers are currently studying various forms of social network interaction among teachers for their impact on educational policy implementation and practice, knowledge on how various types of networks are interrelated is limited. The goal of this study is to understand the dimensionality that may underlie various types of social networks in schools. We assessed seven types of social interaction using social network data of 775 educators from 53 Dutch elementary schools. The quadratic assignment procedure, multidimensional scaling and network visualisations (...) were used to discern underlying dimensions that may explain the interrelatedness of these seven types of social networks. Findings suggest small to moderate similarity between the seven forms of social interaction. Results support a distinction between instrumental and expressive networks and suggest a second dimension of mutual in(ter)dependence to explain differences in social interaction among teachers. Implications for practice and research on teacher collaboration are discussed. (shrink)

In a lifelog, data from various sources are combined to form a record from which one can retrieve information about oneself and the environment in which one is situated. It could be considered similar to an automated biography. Lifelog technology is still at an early stage of development. However, the history of lifelogs so far shows a clear academic, corporate and governmental interest. Therefore, a thorough inquiry into the ethical aspects of lifelogs could prove beneficial to the responsible development of (...) this field. This article maps the main ethically relevant challenges and opportunities associated with the further development of lifelog technologies as discussed in the scholarly literature. By identifying challenges and opportunities in the current debate, we were able to identify other challenges and opportunities left unmentioned. Some of these challenges are partly explained by a blind spot in the current debate. Whilst the current debate focuses mainly on lifelogs held by individuals, lifelogs held by governmental institutions and corporations pose idiosyncratic ethical concerns as well. We have provided a brief taxonomy of lifelog technology to show the variety in uses for lifelogs. In addition, we provided a general approach to alleviate the ethical challenges identified in the critical analysis. (shrink)

The Political Responsibility of Intellectuals addresses the many problems in defining the relationship of intellectuals to the society in which they live. In what respects are they responsible for, and to, that society? Should they seek to act as independent arbiters of the values explicitly or implicity espoused by those around them? Should they seek to advise those in public life about the way in which they should act, or should they withdraw from any form of political involvement? And how (...) should their preoccupations with truth and language find practical expression? The contributors to this volume seek to provide tentative answers to these questions. They come from a wide variety of disciplines, ranging from economics to linguistics and sociology to philosophy, and are drawn from both America and Eastern and Western Europe. The volume is given a particular interest by recent political upheavals in Eastern Europe, where many intellectuals have been confronted with sharply practical, sometimes dramatic, choices about their role in the political arena. (shrink)

In this paper a corporate social responsibility audit is developed following the underlying methodology of the quality award/excellence models. Firstly the extent to which the quality awards already incorporate the development of social responsibility is examined by looking at the Malcolm Baldrige National Quality Award and the European Quality Award. It will be shown that the quality awards do not yet include ethical aspects in relation to social responsibility. Both a clear definition of social responsibility and an improved audit instrument (...) are required. A definition and an audit instrument are developed which stimulate movement in that direction and help organisations to reflect on their position in relation to social responsibility. (shrink)

Philosophy in schools in Australia dates back to the 1980s and is rooted in the Philosophy for Children curriculum and pedagogy. Seeing potential for educational change, Australian advocates were quick to develop new classroom resources and innovative programs that have proved influential in educational practice throughout Australia and internationally. Behind their contributions lie key philosophical and educational discussions and controversies which have shaped attempts to introduce philosophy in schools and embed it in state and national curricula. Drawing together a wide (...) range of eminent scholars and practitioners in the field of educational philosophy, this anthology, the first of its kind, provides not only a historical narrative, but an opportunity to reflect on the insights and experiences of the authors that have made history. The collection is divided into three parts. The overarching theme of Part I is the early years of Philosophy for Children in Australia and how they informed the course that the ‘philosophy in schools movement’ would take. Part II focuses on the events and debates surrounding the development and production of new materials, including arguments for and against the suitability of the original Philosophy for Children curriculum. In Part III, key developments relating to teaching philosophy in schools are analysed. This collection of diverse views, critical appraisals, and different perspectives of historical currents is intended to stimulate thought-provoking questions about theory and practice, and to increase general awareness both nationally and internationally of the maturation of philosophy in schools in Australia. It is also intended to encourage readers to identify emerging ideas and develop strategies for their implementation. (shrink)