Subcreative sets, introduced by Blum, are known to coincide with the effectively speedable sets. Subcreative sets are shown to be the complete sets with respect to S-reducibility, a special case of Turing reducibility. Thus a set is effectively speedable exactly when it contains the solution to the halting problem in an easily decodable form. Several characterizations of subcreative sets are given, including the solution of an open problem of Blum, and are used to locate the subcreative sets with respect to (...) the complete sets of other reducibilities. It is shown that q-cylindrification is an order-preserving map from the r.e. T-degrees to the r.e. S-degrees. Consequently, T-complete sets are precisely the r.e. sets whose q-cylindrifications are S-complete. (shrink)

Subcreative sets, introduced by Blum, are known to coincide with the effectively speedable sets. Subcreative sets are shown to be the complete sets with respect to S-reducibility, a special case of Turing reducibility. Thus a set is effectively speedable exactly when it contains the solution to the halting problem in an easily decodable form. Several characterizations of subcreative sets are given, including the solution of an open problem of Blum, and are used to locate the subcreative sets with respect to (...) the complete sets of other reducibilities. It is shown that q-cylindrification is an order-preserving map from the r.e. T-degrees to the r.e. S-degrees. Consequently, T-complete sets are precisely the r.e. sets whose q-cylindrifications are S-complete. (shrink)

We describe here recent work on the molecular genetics of mitosis in the filamentous fungus Aspergillus nidulans. Aspergillus is one of three simple eukaryotes with powerful genetic systems that have been used to analyze mitosis. The modern molecular biological techniques available with this organism have made it possible to use mutations to identify genes and proteins that play an important role in mitosis. Three Aspergillus genes that affect mitosis are described. One gene, nimA, is specifically expressed late in the cell (...) cycle and codes for a putative protein kinase that induces mitosis, even in cells blocked in S‐phase. The second gene, bimG, codes for a putative phosphatase that interacts functionally with the nimA kinase. The third gene, bimE, codes for a protein that suppresses mitosis during interphase, apparently by keeping nimA turned off. None of these genes appear to be similar to any of the genes affecting mitosis that have been characterized in other eukaryotes, but rather appear to be elements of a system that prevents mitosis from occurring during interphase. (shrink)

Many of the same fundamental principles and regulations that govern civilian biomedical research also apply to research conducted by the US Military. Despite these similarities, the conduct of research by the US Military has additional requirements designed to preserve service members’ informed consent rights, ethical standards and information that may be deemed classified. Furthermore, there are also additional rules and regulations associated with potential research to be done in a combat setting. Before conducting battlefield research, many unique circumstances must be (...) considered to include: (1) the current legal and regulatory requirements for advanced informed consent (2) the tactical situations, and the ability to adequately document in the “austere” environment (3) the need to provide improved drugs and devices for combat casualty care and (4) the special nature of the superior-subordinate relationship. This paper discusses historical background, regulatory oversight, ethical implications and release of information as it pertains to research conducted by the US Military. (shrink)

As a corrective, the systematic study and practice of conscious individual living develops mental insight which is the essence of mental health. ...

An obituary of Jean E. Hampton (1954-1996) by the editors of Economics and Philosophy. At the time of her premature death, Jean was serving as a member of the Editorial Board of the journal.

Introduction.--Biographical notes.--General analysis of knowledge and the act.--Perceptual and manipulatory phases of the act.--Cosmology.--Value and the act.--Supplementary essays.

These original essays offer new perspectives for science educators, curriculum theorists, and cultural critics on science education, French post-structural thought, and the science debates. Included in this book are chapters on the work of Bruno Latour, Michel Serres, and Jean Baudrillard, plus chapters on postmodern approaches to science education and critiques of modern scientific assumptions in curriculum development.

Nature and Narrative is the launch volume in a new series of books entitled International Perspectives in Philosophy and Psychiatry. The series will aim to build links between the sciences and humanities in psychiatry. Our ability to decipher mental disorders depends to a unique extent on both the sciences and the humanities. Science provides insight into the 'causes' of a problem, enabling us to formulate an 'explanation', and the humanities provide insight into its 'meanings' and helps with our 'understanding'. Psychiatry, (...) if it is to develop as a balanced discipline, must draw on input from both of these spheres. Nature (for causes) and Narrative (for meanings) will help define the series as a whole by touching on a range of issues relevant to this 'border country'. With contributions from an international star-studded cast, representing the field of psychiatry, psychology and philosophy, this volume will set the scene for this new interdisciplinary field. This will be of interest to all those with practical experience of mental health issues, whether as providers or as users/consumers of services, as well as to philosophers, social scientists, and bioethicists. (shrink)

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in (...) the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

The purpose of thisDescartes Dictionaryis to bring together as many as possible of the technical and special terms in Descartes writings with their definitions in Descartes own words. There are also implicit characterizations of the meanings of many words, and a handful of entries were included simply for their own sake because Descartes had something interesting to say about his life and world. All of the entries, or almost all of them, have been newly translated for this volume. There are (...) many reasons for preparing new translations: the language in the older translations is archaic and often inaccurate; many of Descartes most important works have never been translated into English; and modern translations vary in quality and style. What is most important, though, is that the old translations simply failed to pay attention to the technical language that Descartes used, and so blurred some of the most important distinctions that he made. (shrink)

He tells us the inside stories behind dozens of famous pictures like these, which are reproduced in this book, and provides intimate and revealing portraits of the men and women who shot them, including Robert Capa, Henri Cartier-Bresson, ...