Despite hundreds of definitions, no consensus exists on a definition of life or on the closely related and problematic definitions of the organism and death. These problems retard practical and theoretical development in, for example, exobiology, artificial life, biology and evolution. This paper suggests improving this situation by basing definitions on a theory of a generalized particle hierarchy. This theory uses the common denominator of the “operator” for a unified ranking of both particles and organisms, from elementary particles to animals (...) with brains. Accordingly, this ranking is called “the operator hierarchy”. This hierarchy allows life to be defined as: matter with the configuration of an operator, and that possesses a complexity equal to, or even higher than the cellular operator. Living is then synonymous with the dynamics of such operators and the word organism refers to a select group of operators that fit the definition of life. The minimum condition defining an organism is its existence as an operator, construction thus being more essential than metabolism, growth or reproduction. In the operator hierarchy, every organism is associated with a specific closure, for example, the nucleus in eukaryotes. This allows death to be defined as: the state in which an organism has lost its closure following irreversible deterioration of its organization. The generality of the operator hierarchy also offers a context to discuss “life as we do not know it”. The paper ends with testing the definition’s practical value with a range of examples. (shrink)

This is a description of an avian-shaped feature that rests below a network of cellular structures found on a mound within the Argyre Basin of Mars in Mars Global Surveyor image M14-02185, acquired on April 30, 2000, and released to the public on April 4, 2001. The area examined is located near 48.0° South, 55.1° West. The formation is approximately 2,400 meters long from the tip of its beak to the tip of its farthest tail feather. There is a minimum (...) of six different variations in appearance of the surface material over this small area. Utilizing the public targeting request form provided on the Mars Global Surveyor (MGS) website, co-author Miller secured a second image of the area that was obtained on July 3, 2006, showing this feature under different conditions S20-00165. The new image was then released to the public on August 11, 2006. A third image of the formation identified as MGS S13-01480 was acquired on December 15, 2005, and although officially processed on June 20, 2006, it was not made available to the public until August 22, 2009, on NASA’s Planetary Data System (PDS) website. All three of the MGS images reveal defining aspects of this avian feature, including a head, beak, body, eye, leg, foot, toes, wing, and feathers. When taken together, these components induce the visual impression of an avian-shaped formation that exhibits a unique set of proportional features. Adjoining this formation is a composite of complex cellular features that form a compartmentalized infrastructure. The three authors who are veterinarians provide a critical analysis of the avian features, and the geologist and geoscientist authors examine natural mechanisms that could contribute to the formation of this feature. An extensive search of comparable regions within and beyond the area of the Argyre Basin was conducted. A list of these sites is provided, and terrestrial comparisons are also offered. (shrink)

This is the first of three volumes which will contain all of Locke's extant philosophical writings relating to An Essay Concerning Human Understanding, not included in other Clarendon editions like the Correspondence. It contains the earliest known drafts of the Essay, Drafts A and B, both written in 1671, and provides for the first time an accurate version of Locke's text. Virtually all his changes are recorded in footnotes on each page. Peter Nidditch, whose highly acclaimed edition of An Essay (...) Concerning Human Understanding was published in this series in 1975, used pioneering editorial techniques in his compilation of Volume 1. Most of the work was completed before his tragically early death in 1983. Volumes 2 and 3, almost wholly the work of G. A. J. Rogers will contain the third extant draft of the Essay, the Epitome and the Conduct of the Understanding. They will also include a History of the Writing of the Essay, together with other shorter writings by Locke. (shrink)

Deterministic models in population dynamics often are really approximations to stochastic models, justified by an appeal to the law of large numbers. It is proposed to call such models pseudodeterministic. Four questions are discussed in this article: (1) What errors may be made by equating deterministically predicted values to expectations? (2) When, and in what sense, may numbers be assumed to be large? (3) How large are the variances, coefficients of variations, etc., as assigned to the variables in the stochastic (...) versions of the models? (4) What role may pseudodeterministic models play in empirical research, where problems of statistical reliability arise?As an example, a modified Nicholson-Bailey model of the interaction between insect parasitoids and their hosts is discussed; the modification consists of assigning a random (density-independent) mortality to the parasitoid population. A stochastic version of this model is discussed. The expectation of the final host density is compared with the value computed from the deterministic model. The latter value is systematically lower than the former. The magnitude of the difference depends on parameter values. The variability to be expected with the stochastic model is characterized by the coefficient of variation of the final host density; its dependence on parameter values and initial conditions is discussed. It is concluded that it is worthwhile in practical applications to estimate parasitoid mortality, and that the coefficient of variation in real situations may be far from negligible. (shrink)

Human beings inhabit a symbolic reality that articulates meaning. This is culture understood as a web of meanings that actually builds our identity by providing guidance in the complexity of our environment. It is the complex interplay between identity and alterity, between interiority and exteriority, between familiarity and strangeness. Worldviews set up borders that delimit one's own world and others' ground by establishing stereotypes and prejudices. This article presents the results of a research project on prejudices towards the other in (...) students majoring in Education and Psychology with the aim of offering some reflections on what is at stake in social exclusion policies. (shrink)

We attempt to discern what Badioursquo;s philosophical system provides for thinking of education in a form which separates it from its contemporary representation in the state. These notes oppose to this state form Badiou#39;s declaration that #39;the only education is an education by truthsrsquo;. We pursue this in three sections. First, we will address the significance and function of the term lsquo;conditionsrsquo;. Secondly we will address Badioursquo;s essay lsquo;Art and Philosophyrsquo; from Handbook of Inaesthetics, the only essay in fact where (...) Badiou addresses education in a specific manner and in which Badiou discusses the link between art and philosophy in terms of the lsquo;pedagogical themersquo;: A theme, he says, that has been brought to collapse. Thirdly we will attempt to discern what might make up whatnbsp; Badiou refers to as the lsquo;fourth modalityrsquo; of the link between philosophy and its conditions through a somewhat speculative discussion of the dual lsquo;militantrsquo; praxis known in Badioursquo;s work as lsquo;subtractionrsquo; and lsquo;forcingrsquo;. (shrink)

First published in 1952, British Empirical Philosophers is a comprehensive picture of one of the most important movements in the history of philosophic thought. In his introduction, Professor A. J. Ayer distinguishes the main problems of empiricism and gives a critical account of the ways in which the philosophers whose writings are included in this volume attempted to solve them. Editors Ayer and Raymond Winch bring together an authoritative abridgement of John Locke’s Essay Concerning Human Understanding ; Bishop George Berkeley’s (...) Principles of Human Knowledge ; almost the entire first book of David Hume’s Treatise Concerning Human Nature ; and extracts from Thomas Reid’s Essay on the Intellectual Powers of Man and John Stuart Mill’s Examination of Sir William Hamilton’s Philosophy. (shrink)

According to probabilistic theories of reasoning in psychology, people's degree of belief in an indicative conditional `if A, then B' is given by the conditional probability, P(B|A). The role of language pragmatics is relatively unexplored in the new probabilistic paradigm. We investigated how consequent relevance a ects participants' degrees of belief in conditionals about a randomly chosen card. The set of events referred to by the consequent was either a strict superset or a strict subset of the set of events (...) referred to by the antecedent. We manipulated whether the superset was expressed using a disjunction or a hypernym. We also manipulated the source of the dependency, whether in long-term memory or in the stimulus. For subset-consequent conditionals, patterns of responses were mostly conditional probability followed by conjunction. For superset-consequent conditionals, conditional probability responses were most common for hypernym dependencies and least common for disjunction dependencies, which were replaced with responses indicating inferred consequent irrelevance. Conditional probability responses were also more common for knowledge-based than stimulus-based dependencies. We suggest. (shrink)

Originally published in 1969. This volume was composed by an eminent Sufi mystic whilst in prison in Baghdad, awaiting execution, in a vain attempt to overthrow his sentence; he was put to death in AD 1311 at the age of 33. This apologia is a document of great poignancy, composed in most elegant Arabic and translated with the customary skill and elegance for which A J Arberry became so well-known.

Anna J Dare,1 Anthony RJ Phillips,1–3 Michael Chu,1 Anthony JR Hickey,2 Adam SJR Bartlett1–31Department of Surgery, 2Maurice Wilkins Centre for Biodiscovery, University of Auckland, Auckland, New Zealand; 3New Zealand Liver Transplant Unit, Auckland City Hospital, Auckland, New ZealandBackground: Hepatic steatosis is increasingly encountered among organ donors. Currently, there is no consensus guideline as to the type or degree of donor steatosis considered acceptable for liver transplantation, and little is known about local practices in this area. The aim of this survey (...) was to evaluate current clinical practices amongst liver transplant surgeons in Australia and New Zealand in the evaluation and use of steatotic donor livers in LT.Methods: An anonymous online twelve-question survey was emailed to all practicing LT surgeons in ANZ in January 2010.Results: The response rate was 83%. Estimated prevalence of steatosis in donor livers was between 40% and 60%. In determining suitability for LT, 90% of respondents reported rejecting organs with "severe" steatosis based on visual and palpation grounds alone. A total of 68% sought further histological assessment if the donor liver looked bad and there were risk factors for steatosis. The majority of respondents performed only one biopsy of the liver, using hematoxylin and eosin staining for fat assessment. There was wide variation in the upper limit of steatosis considered to be acceptable for LT. A total of 21% of respondents still considered microvesicular steatosis a risk factor for primary graft nonfunction.Conclusion: This survey highlights the significant variation in the appraisal and use of steatotic grafts by LT surgeons in ANZ. Accurate evaluation and judicious use of mild and moderately steatotic grafts is required if we are to utilize the available donor pool best.Keywords: liver transplantation, steatosis, fatty liver, organ donors. (shrink)

Het Leids-Haags Allegorieënlexicon toont nieuwe perspectieven op de maatschappelijke werkelijkheid met een actuele duiding van vijftig kernthema’s uit de wetenschap. De auteurs zijn de duale promovendi en hun promotores van Leiden University Dual PhD Centre The Hague. Ze worden daarbij geïnspireerd door de metafoor van de grot van Plato: Waar ben ik? Waar sta ik? Welk beeld zie ik? Hoe kan ik dat begrijpen? Er ontstaan beeldende voorstellingen van begrippen waarin op zoek wordt gegaan naar de centrale gedachten die ten (...) grondslag liggen aan die begrippen. Zo wordt de veranderende wereld waargenomen met het besef dat we nooit kunnen weten of we de gehele werkelijkheid kunnen zien of begrijpen. De waarneming is afhankelijk van de zichtpositie die de waarnemer inneemt. Zo ontstaan verbeeldingen van waarnemingen van ons menselijk bestaan. Zoals: assimilatie, creativiteit, gender, kunstenaarschap, magistraat, participatie, regels, tragedie en verzorgingsstaat. Eerst wordt actuele literatuur besproken. Daarna volgt discussie. Tenslotte neemt de auteur positie in. Met bijdragen van promotores Wilfried Admiraal, Ingrid van Biezen, Hans Borgman, Paul Cliteur, Jaap van den Herik, Rikki Holtmaat, Willem Otterspeer, Jos Raadschelders, Robert Tijssen, Wim Willems en promovendi. (shrink)

v. 1. Śaṃkara on the absolute.--v. 2. Śaṃkara on the creation.--v. 3. Śaṃkara on the soul.--v. 4. Śaṃkara on rival views.--v. 5. S̋aṃkara on discipleship.--v. 6. Śaṃkara on enlightenment.

"The philosophical works of A. J. Ayer": p. [334]-341. Bibliography: p. [343]-346. Includes indexes.