This paper puts forward a general framework for thought about human information processing. It is intended to avoid some of the problems of pipeline or stage models of function. At the same time it avoids the snare of supposing a welter of indefinitely many separate processes. The approach is not particularly original, but rather represents the common elements or presuppositions in a number of modern theories. These presuppositions are not usually explicit, however, and making them so reduces the danger of (...) slipping back into earlier modes of thought.The key point is to distinguish between persisting representations and the processes that translate one representation into another. Various classes or groups of persisting representations can be distinguished by the experimental treatments that interfere with them. In particular, there now seem to be several kinds of short-term or temporary storage, different from each other as well as from longterm memory; the translating processes also have several different modes or kinds. A particularly important aspect of the current position is that a model of this general type no longer requires some external agent to direct and control long sequences of behaviour. (shrink)

Clinical diagnostic medicine is an experimental science based on observation, hypothesis making, and testing. It is an use dynamic process that involves observation and summary, diagnostic conjectures, testing, review, observation and summary, new or revised conjectures, i.e. it is an iterative process. It can then be said that diagnostic hypotheses are also ‘observation-laden’. My aim is to enlarge on the strategies of medical diagnosis as these are meshed in training and clinical experience—that is, to describe the patterns of reasoning used (...) by experienced clinicians under different diagnostic circumstances and how these patterns of inquiry allow further insight into the evaluation and treatment of patients. I do not aim to present a theory and illustrate it with examples; I wish rather am to let a realistic example, similar to actual clinical scenarios, direct the exposition. To this end, I introduce an account of medical diagnosis—briefly comparing and contrasting it to other accounts—in order to focus on discussing the process of diagnosis through a detailed clinical case. (shrink)

We distinguish three aspects of medical diagnosis: generating new diagnostic hypotheses, selecting hypotheses for further pursuit, and evaluating their probability in light of the available evidence. Drawing on Peirce’s account of abduction, we argue that hypothesis generation is amenable to normative analysis: physicians need to make good decisions about when and how to generate new diagnostic hypothesis as well as when to stop. The intertwining relationship between the generation and selection of diagnostic hypotheses is illustrated through the analysis of a (...) detailed clinical case study. This interaction is not adequately captured by the existing probabilistic, decision-theoretic models of the threshold approach to clinical decision-making. Instead, we propose to conceptualize medical diagnosis in terms of strategic reasoning. (shrink)

So Lentricchia has fulfilled one of his purposes in this essay. He has subverted the patriarchy from within: that is, he has subverted Bloom’s literary history as well as the essentialist feminism associated with it. But he has not fulfilled his affiliated purpose of establishing a dialogue between feminists and feminized males. The “feminization” of literary studies by patriarchal figures like Bloom does not account for the feminization of Stoddard, Gilder, Van Dyke, Woodberry, or Stedman. Their feminization, like that of (...) the Stevens who felt positively lady-like, was not the result of patriarchal oppression. And it will not disappear as the result of the subversion of the patriarchy by a feminized male. Mistaking the work of feminization with the work of the patriarch eradicates the feminine. By identifying the difference between a feminization produced by the patriarchy and a feminine cultural sphere, Lentricchia has made room for the different cultural conversation he wants to develop. But this conversation can take place only after the backdrop of an oppressive patriarch can drop away.This conversation might begin with an account of that cultural sphere in which women are the agency to which Lentricchia alludes. It might begin when we recall that the model for the culture’s “Emmeline Grangerfords” was Harriet Beecher Stowe’s Little Eva. The social change Little Eva helped effect was the emancipation of both slaves and slaveholders. Donald E. Pease is professor of English and American literature at Dartmouth College. His articles on nineteenth-century authors and literature have appeared in a number of journals. He is the coeditor, with Walter Benn Michaels, of American Renaissance Reconsidered, and is the author of Visionary Compacts: American Renaissance Writings in Cultural Contexts, which won the Mark H. Ingraham Prize in 1987. (shrink)

The National Summit on Legal Preparedness for Obesity Prevention and Control was conceived by the Centers for Disease Control and Prevention as a strategic conference to review the current status of legal preparedness for obesity prevention and control, identify potential gaps, and develop specific action options for improving the contribution law can make to reduce the health threat posed by obesity. Working with the collaborating partners and planning committe, the host committe planned and modeled after the Summit CDC’s 2007 conference (...) on public health emergency legal preparedness that resulted in the National Action Agenda for Public Health Emergency Legal Preparedness. The summit was a working meeting that offered invited participants a structured opportunity to deliberate about the laws and legal issues that impact obesity prevention and control from a public health perspective. (shrink)

This essay presents a scenario of the origin of life that is based on analysis of biological architecture and mechanical design at the microstructural level. My thesis is that the same architectural and energetic constraints that shape cells today also guided the evolution of the first cells and that the molecular scaffolds that support solid-phase biochemistry in modern cells represent living microfossils of past life forms. This concept emerged from the discovery that cells mechanically stabilize themselves using tensegrity architecture and (...) that these same building rules guide hierarchical self-assembly at all size scales (Sci Amer 278:48–57;1998). When combined with other fundamental design principles (e.g., energy minimization, topological constraints, structural hierarchies, autocatalytic sets, solid-state biochemistry), tensegrity provides a physical basis to explain how atomic and molecular elements progressively self-assembled to create hierarchical structures with increasingly complex functions, including living cells that can self-reproduce. BioEssays 22:1160–1170, 2000. © 2000 John Wiley & Sons, Inc. (shrink)

Throughout the philosophical tradition there usually have been those philosophers who have either denied the existence of mental entities outright, or else have claimed that they were, in some sense, reducible to physical entities. And, on this score, the twentieth century has been no exception. In the last twenty or so years, the various denials of the existence of mental entities have taken three distinct forms. First, there is the sort of behaviorism advocated by Quine and Ryle. Second, there is (...) the materialism of J. J. C. Smart and D. M. Armstrong. And, third, there is the so-called Identity Theory as advocated by Donald Davidson, Thomas Nagel, and a host of others too numerous to mention. (shrink)

GRAS is a recently discovered family of plant-specific proteins that play important regulatory roles in diverse aspects of plant development. Several of the motifs present in the GRAS proteins suggest that they function as transcription factors, although homology-searching programs have revealed no significant similarity to any non-plant proteins. Here we propose that the GRAS proteins are related to the Signal Transducers and Activators of Transcription (STAT) family of proteins. STATs are known in many non-plant species, and act as intracellular intermediaries (...) between extracellular ligands and the transcription and activation of genes. Our hypothesis is that the GRAS proteins perform this function in plants, with mechanisms similar to those of the animal STATs. If true, this hypothesis has important implications for the evolution of phosphotyrosine based signal transduction systems in eukaryotic organisms. BioEssays 22:573–577, 2000. © 2000 John Wiley & Sons, Inc. (shrink)

What the Old Testament says about wealth and poverty cannot be taken as prescriptive for any modern society, but its emphasis on the fate of the powerless prompts us to ask how our society deals with those unable to protect themselves from the depredations of others.

In this paper we derive the Schrödinger equation by comparing quantum statistics with classical statistical mechanics, identifying similarities and differences, and developing an operator functional equation which is solved in a completely algebraic fashion with no appeal to spatial invariances or symmetries.

This book, first published in 2006, examines the incentives at work in a wide range of institutions to see how and how well coordination is achieved by informing and motivating individual decision makers. The book examines the performance of agents hired to carry out specific tasks, from taxi drivers to CEOs. It investigates the performance of institutions, from voting schemes to kidney transplants, to see if they enhance general well being. The book examines a broad range of market transactions, from (...) auctions to labor markets, to the entire economy. The analysis is conducted using specific worked examples, lucid general theory, and illustrations drawn from news stories. Of the seventy different topics and sections, only twelve require a knowledge of calculus. The second edition offers new chapters on auctions, matching and assignment problems, and corporate governance. Boxed examples are used to highlight points of theory and are separated from the main text. (shrink)