Isomechanical groups are, as defined by Frost and Ashby [H.J. Frost and M.F. Ashby, Deformation?Mechanism Maps, Pergamon Press, Oxford, 1982], separate classes of materials that exhibit similar deformation and transport properties when normalised by an appropriate parameter. Fundamentally, this separation results from significant differences in material structure and bonding. Here, such an analysis is applied to 40 bulk metallic glasses (BMGs) grouped into three classes according to their Poisson's ratio, which is known to be an indicator of intrinsic toughness. Through (...) rigorous statistical analysis, it is found that isomechanical groups are present and that they may result from (1) variation in the tendency for directional bonding, and (2) how liquid-like the structure is, which may be characterised by a quantification of local volumetric strain. These results suggest that, although experimentally observed properties from BMGs in different isomechanical groups are all typically considered within the same framework, differences in atomic packing and inter-atomic bonding mean that they should in fact be treated separately. These fundamental differences in bonding and structure may explain the known large variation in the tendency for toughness and plasticity in BMGs. (shrink)
Any theoretician constructing a serious model of consciousness should carefully assess the details of empirical data generated in the neurosciences and psychology. A failure to account for those details may cast doubt on the adequacy of that model. This paper presents a case in point. Dennett and Kinsbourne's (Dennett, D., & Kinsbourne, M. (1992). Time and the observer: The where and when of consciousness in the brain. Behavioral and Brain Sciences, 15, 183-243) assault on the materialist version of the Cartesian (...) Theater model of the mind relies significantly on the superiority of their Multiple Drafts model of consciousness as an explanation of the phenomenon of metacontrast. However, their description of metacontrast is, in important ways, inadequate. The result is that their explanation of how the Multiple Drafts model handles this phenomenon fails to account for the actual data. In this paper I offer a more complete description of metacontrast, show how Dennett and Kinsbourne's explanation fails, and argue that there are good theoretical reasons for choosing the so-called Stalinesque model over the so-called Orwellian model. (shrink)
visual masking provides a clear illustration that ‘there is really only a verbal difference’ between two versions of the Cartesian Theater model of the mind. This alleged lack of a distinction is both the crucial premise of their main argument against the Cartesian Theater and a motivator for accepting their own Multiple Drafts model. I argue that metacontrast reveals a difference between the two versions of the Cartesian Theater that meets criteria found in (Dennett and Kinsbourne ) for determining such (...) a difference. This difference undermines the soundness of their argument against the Cartesian Theater, and exerts pressure on Dennett and Kinsbourne to offer a more detailed articulation of their model. Introduction Brief Explanation of Metacontrast Backward Visual Masking The Stalinesque and Orwellian Models of Metacontrast 3.1 Criteria for determining a difference A Difference That Makes a Difference 4.1 Skeptical hypothesis objection Other Objections and Replies 5.1 Straw person objection 5.2 Corroborative issues objection Conclusion CiteULike Connotea Del.icio.us What's this? (shrink)
We give a proof, valid in any elementary topos, of the theorem of Zermelo that any set possessing a choice function for its set of inhabited subsets can be well-ordered. Our proof is considerably simpler than existing proofs in the literature and moreover can be seen as a direct generalization of Zermelo's own 1908 proof of his theorem.
There is a problem about the compatibility of Reid's commitment to both a sign theory of sensations and also direct realism. I show that Reid is committed to three different senses of the claim that mind independent bodies and their qualities are among the immediate objects of perception, and I then argue that Reid's sign theory conflicts with one of these. I conclude by advocating one proposal for reconciling Reid's claims, deferring a thorough development and defence of the proposal to (...) another paper. (shrink)
We have benefited from conversations with Archon Fung, Brian Jacob, Todd Pittinsky, Peter Schuck, Ani Satz, Andrew Williams, and students in a joint class on statistics and ethics at the John F. Kennedy School of Government in October 2002. We are also grateful to our audience at the conference “The Priority of Practice,” organized by Jonathan Wolff at University College London in September 2003, and to Arthur Applbaum, Miriam Avins, Frances Kamm, Simon Keller, Frederick Schauer, Alan Wertheimer, and (...) the Editors of Phi- losophy & Public Affairs for insightful comments. We have benefited from prepublication reading of Schauer’s work on profiling, Profiles, Probabilities, and Stereotypes (Cambridge, Mass: Harvard University Press, 2003). We thank Avedis Koutoujian for research assistance. (shrink)
Contents: FOREWORD Aronson, Moses J.; THE HUMANIZATION OF PHILOSOPHY Ayres, Clarence Edwin, THE GOSPEL OF TECHNOLOGY Bates, Ernest Sutherland; TOWARD A SOCIAL PHILOSOPHY Bode, Boyd H.; "THE GREAT AMERICAN DREAM" Cohen Felix S.; THE SOCIALIZATION OF MORALITY Costello, Harry Todd, A PHILOSOPHER AMONG THE METAPHYSICIANS Durant, Will; AN AMATEUR'S PHILOSOPHY Edman, Irwin; THE NATURALISTIC TEMPER Flewelling, Ralph Tyler; THE NEW TASK OF PHILOSOPHY Holt, Edwin Bissell; THE WHIMSICAL CONDITION OF SOCIAL PSYCHOLOGY, AND OF MANKIND Hook, Sidney; EXPERIMENTAL NATURALISM Irving, (...) John Allan; TOWARD RADICAL EMPIRICISM IN ETHICS Kallen, Horace Meyer . (shrink)
Analyses of between-sex differences have provided a powerful starting point for evolutionarily informed work on human sexuality. This early work set the stage for an evolutionary analysis of within-sex differences in human sexuality. A comprehensive theory of human sexual strategies must address both between-sex differences and within-sex differences in evolved psychology and manifest behavior.
This manuscript develops the concept of organizational virtue orientation (OVO) and examines differences between family and non-family firms on the six organizational virtue dimensions of Integrity, Empathy, Warmth, Courage, Conscientiousness, and Zeal. Using content analysis of shareholder letters from S&P 500 companies, our analyses find that there are significant differences between family and non-family firms in their espoused OVO, with family firms generally being higher. Specifically, family firms were significantly higher on the dimensions of Empathy, Warmth, and Zeal, but lower (...) on Courage. Based on these findings we further develop the OVO concept through the discussion of implications and areas for future research. (shrink)
Humans survive in environments that contain a vast quantity and variety of visual information. All items of perceived visual information must be represented within a limited number of brain networks. The human brain requires mechanisms for selecting only a relevant fraction of perceived information for more in-depth processing, where neural representations of that information may be actively maintained and utilized for goal-directed behavior. Object-based attention is crucial for goal-directed behavior and yet remains poorly understood. Thus, in the study we investigate (...) how neural representations of visual object information are guided by selective attention. The magnitude of activation in human extrastriate cortex has been shown to be modulated by attention; however object-based attention is not likely to be fully explained by a localized gain mechanism. Thus, we measured information coded in spatially distributed patterns of brain activity with fMRI while human participants performed a task requiring selective processing of a relevant visual object category that differed across conditions. Using pattern classification and spatial correlation techniques, we found that the direction of selective attention is implemented as a shift in the tuning of object-based information representations within extrastriate cortex. In contrast, we found that representations within lateral prefrontal cortex coded for the attention condition rather than the concrete representations of object category. In sum, our findings are consistent with a model of object-based selective attention in which representations coded within extrastriate cortex are tuned to favor the representation of goal-relevant information, guided by more abstract representations within lateral prefrontal cortex. (shrink)