In 1885, during initial discussions of J. C. Maxwell's celebrated thermodynamic demon, Whiting (1) observed that the demon-like velocity selection of molecules can occur in a gravitationally bound gas. Recently, a gravitational Maxwell demon has been proposed which makes use of this observation [D. P. Sheehan, J. Glick, and J. D. Means, Found. Phys. 30, 1227 (2000)]. Here we report on numerical simulations that detail its microscopic phase space structure. Results verify the previously hypothesized mechanism of its paradoxical behavior. This (...) system appears to be the only example of a fully classical mechanical Maxwell demon that has not been resolved in favor of the second law of thermodynamics. (shrink)

In 1885, during initial discussions of J. C. Maxwell's celebrated thermodynamic demon, Whiting(1) observed that the demon-like velocity selection of molecules can occur in a gravitationally bound gas. Recently, a gravitational Maxwell demon has been proposed which makes use of this observation [D. P. Sheehan, J. Glick, and J. D. Means, Found. Phys. 30, 1227 (2000)]. Here we report on numerical simulations that detail its microscopic phase space structure. Results verify the previously hypothesized mechanism of its paradoxical behavior. This system (...) appears to be the only example of a fully classical mechanical Maxwell demon that has not been resolved in favor of the second law of thermodynamics. (shrink)

In this short text, a distinguished philosopher turns his attention to one of the oldest and most fundamental philosophical problems of all: How it is that we are able to sort and classify different things as being of the same natural class? Professor Armstrong carefully sets out six major theories—ancient, modern, and contemporary—and assesses the strengths and weaknesses of each. Recognizing that there are no final victories or defeats in metaphysics, Armstrong nonetheless defends a traditional account of universals as the (...) most satisfactory theory we have.This study is written for advanced students, but as Armstrong goes considerably beyond his earlier work on this topic, it will interest professional scholars as well. Carefully plotted and clearly written, Universals is both a paradigm of exposition and a case study on the value of careful analysis of fundamental issues in philosophy. (shrink)

In this important study D. M. Armstrong offers a comprehensive system of analytical metaphysics that synthesises but also develops his thinking over the last twenty years. Armstrong's analysis, which acknowledges the 'logical atomism' of Russell and Wittgenstein, makes facts the fundamental constituents of the world, examining properties, relations, numbers, classes, possibility and necessity, dispositions, causes and laws. All these, it is argued, find their place and can be understood inside a scheme of states of affairs. This is a comprehensive and (...) rigorously this-worldly account of the most general features of reality, argued from a distinctive philosophical perspective, and it will appeal to a wide readership in analytical philosophy. (shrink)

Children acquiring languages with noun classes have ample statistical information available that characterizes the distribution of nouns into these classes, but their use of this information to classify novel nouns differs from the predictions made by an optimal Bayesian classifier. We use rational analysis to investigate the hypothesis that children are classifying nouns optimally with respect to a distribution that does not match the surface distribution of statistical features in their input. We propose three ways in which children's apparent statistical (...) insensitivity might arise, and find that all three provide ways to account for the difference between children's behavior and the optimal classifier. A fourth model combines two of these proposals and finds that children's insensitivity is best modeled as a bias to ignore certain features during classification, rather than an inability to encode those features during learning. These results provide insight into children's developing knowledge of noun classes and highlight the complex ways in which statistical information from the input interacts with children's learning processes. (shrink)

This chapter explores the debate between contemporary projectivists or expressivists, and the advocates of sensibility theory. Both positions are best viewed as forms of sentimentalism — the theory that evaluative concepts must be explicated by appeal to the sentiments. It argues that the sophisticated interpretation of such notions as “true” and “objective” that are offered by defenders of these competing views ultimately undermines the significance of their meta-ethical disputes over “cognitivism” and “realism” about value. Their fundamental disagreement lies in moral (...) psychology; it concerns how best to understand the emotions to which sentimentalist theories must appeal. (shrink)

Purpose:Human navigation skills are essential for everyday life and rely on several cognitive abilities, among which visual-spatial competences that are impaired in subjects with cerebral palsy. In this work, we proposed navigation tasks in immersive virtual reality to 15 children with CP and 13 typically developing peers in order to assess the individual navigation strategies and their modifiability in a situation resembling real life.Methods:We developed and adapted to IVR an application based on a 5-way maze in a playground that was (...) to be navigated to find a reward. The learning process, navigation strategies, and adaptation to changes were compared between participants with CP and their TD peers and correlated with visual-spatial abilities and cognitive competences.Results:Most participants with CP needed more attempts than TD participants to become proficient in navigation. Furthermore, the learning phase was correlated to visual-spatial memory but not with cognitive competences. Interestingly, navigation skills were comparable between groups after stabilization. While TD participants mainly relied on allocentric strategies based on environmental cues, egocentric strategies based on body motion prevailed in participants with CP. Furthermore, participants with CP had more difficulties in modifying their navigation strategies, caused by difficulties in executive processes beyond the visual-perceptual impairment, with an inefficient shift between implicit and explicit competences.Conclusions:The navigation abilities in participants with CP seem to be different from their TD peers in terms of learning and adaptation to new conditions; this could deeply affect their everyday life and ultimately participation and inclusion. A regular assessing and focused rehabilitative plans could help to better navigate the environment and affect self-perception. (shrink)

In this article, the authors try to answer the following questions: How can an object/instance seen for the first time extend a category or update a concept? How is it possible to determine the reference of a concept that represents a behaviour? In the first case, the authors discuss the learning of inferential linguistic competence used to update a concept through an approach based on prototype theory. In the second case, the authors discuss the learning of referential linguistic competence used (...) to determine the reference of a concept (i.e., determination of an actual behaviour) through an approach based on embodied cognition. The authors show how combining prototype-based and embodied categorization in Wittgenstein’s rule-following praxis (the individual and community dimension), linguistic learning of a concept (inferential competence), and determination of its reference (referential competence) can be traced back to the same model. Keywords Action, Categorization, Embodied Cognition, Embodiment, Linguistic Inferential Competence, Linguistic Referential Competence, Perception, Prototype Theory, Reference, Sign. (shrink)

In Prop. 2, 1, 3-4 a reply to the verses 6-7 of Gallus can be recognized: in the Propertian text the poetic inspiration comes to the love elegist not from the Muses, but from the puella. The polemical attitude of Propertius towards Gallus is not only here, but also at 2, 13, on the theme of the domina iudex. Ovid will follow Propertius in making the puella the only inspiration for his poetry.

The nosological diagnosis is a particular type of nontheoretical diagnosis consisting of identifying the disease that afflicts the patient without explaining the underlying etiopathological mechanisms. Its origins are within the essentialist point of view on the nature of diseases, which dates back at least to 18th-century taxonomy studies. In this article, we propose a model of nosological diagnosis as a two-phase process composed of the categorization of inductive inferences and argumentations by analogy. In the inductive phase, disease entities are identified (...) by means of typicality-based categorization processes, and meaningful clinical samples are learned ; in the subsequent phase, those samples are used as the bases of argumentations by analogy to obtain a diagnosis for a given patient. This model extends the prototype resemblance theory of disease including also the exemplar theory proposed in cognitive science and, moreover, it frames the clinical activity of nosological diagnosis and how it can be explained within the theory of argumentation. According to it, diagnosis based on the recognition of a typical syndrome is explained in terms of the prototype theory of categorization and the antisymmetrical argumentation by analogy, while diagnosis based on a comparison with a previous clinical case is explained by the exemplar theory of categorization and by the symmetrical argumentation by analogy. (shrink)

In Virgil’s Eclogues the Muses Pierides are always represented as authors of the poems, like in the Gallus papyrus from Qaṣr Ibrîm. Their presence in passages allusive to the verses of the papyrus and the employ of the epithet by Prop. 2, 10 and 2, 13 in texts rich of references to Gallus suggest that the word Pierides was already in Gallus’ poetry and perhaps in the lacuna at v. 6 of the papyrus.

Riassunto: Lo scopo di questo lavoro è fornire una spiegazione filosofico-cognitiva della diagnosi nosologica legando i classici temi filosofici delle forme del ragionamento scientifico con gli aspetti cognitivi del ragionamento di senso comune. In filosofia della medicina sono state proposte varie teorie della diagnosi per analizzare e spiegare il ragionamento diagnostico; una di queste è la diagnosi nosologica: un particolare tipo di diagnosi a-teorica e basata sulla similarità. In questo lavoro mostriamo come la diagnosi nosologica si possa considerare come un (...) procedimento scientifico composto sia da processi induttivi di categorizzazione e concettualizzazione che di argomentazioni per analogia; i processi di categorizzazione coinvolti sono spiegabili usando due delle teorie dei concetti proposte nella scienza cognitiva: la teoria dei prototipi e la teoria degli esemplari; mentre le argomentazioni usate sono analogie sia simmetriche che anti-simmetriche. Infine, presentiamo un modello della diagnosi nosologica che lega in un quadro coerente queste precedenti analisi; in questo modello la diagnosi nosologica basata sul riconoscimento del quadro morboso tipico, la sindrome, è spiegata in termini di teoria dei prototipi e di argomentazioni analogiche anti-simmetriche; mentre la diagnosi nosologica basata su di un precedente caso clinico è spiegata con la teoria degli esemplari e con le usuali argomentazioni analogiche simmetriche. Parole chiave: Diagnosi; Categorizzazione; Analogia; Induzione; Nosologia Analogical Arguments and Categorization Processes in Nosological Diagnosis -: The purpose of this work is to provide a philosophical-cognitive explanation of nosological diagnosis by linking the classical philosophical themes of scientific reasoning to cognitive aspects of common sense reasoning. In philosophy of medicine, various theories of diagnosis have been proposed to analyze and explain diagnostic reasoning; one of these is nosological diagnosis: a particular type of atheoretical diagnosis based on similarity. In this paper, we show how nosological diagnosis can be considered as a scientific process composed of both inductive processes of categorization and argumentation by analogy; the categorization processes involved can be explained using two of the theories of concepts proposed in cognitive science: the theory of prototypes and the theory of exemplars; while argumentation uses both symmetrical and anti-symmetrical analogies. Finally, we present a model of nosological diagnosis that binds these previous analyses into a coherent framework; in this model, nosological diagnosis based on the recognition of a typical syndrome is explained in terms of prototype theory and anti-symmetrical analogical argumentation; while nosological diagnosis based on previous clinical case studies is explained by the theory of exemplars and the usual symmetrical analogical argumentation. Keywords: Diagnosis; Categorization; Analogy; Induction; Nosology. (shrink)

The comparison between Prop. 2, 34, 91-92 and Virg. ecl. 10, 18 allows to argue that Gallus treated Adonis in his love elegy and that he used this character as an exemplum, in the same way of his future followers, in particular Propertius and Ovid. It is possible that he imitated Euphor. fr. 43 Pow., and for this reason we can try to reconstruct his relationship with the models and his freedom in in adapting them to the new elegiac poetry.

The notice in the Scholia Bernensia about Vergil, Georgics 4.468 that links the name of Gallus to the katabasis of Orpheus can be read as a confirmation of the relation between Vergil’s short poem and the elegiac poet’s work. Significant in this sense is the term formido, very elegant as used by Vergil and maybe part of the poetic lexicon of Gallus, as is perhaps suggested by a passage of the Philae stele.

Attachment is an emotional bond between two people where one seeks care from the other. In the prototypical case, the child attaches to their mother. The most recent theoretical developments point out that attachment is multidimensional – meaning that the phenomenon pertains to multiple domains related to the relationship with the caregiver. However, researchers have so far modeled attachment computationally by mostly adopting a classical categorical (as opposed to dimensional) standpoint that sees the system as controlling caregiver proximity. In contrast, (...) we adopt here adimensional perspective(DP) and consider dimensions to be the system’s set-goals. We hypothesize that the resulting multidimensional controller should lead to valid (or even better) models of the phenomenon. To start testing this hypothesis, we built a DP-informed agent-based model of attachment inspired by the widely-studied Strange Situation Procedure. In this context, child and mother show the nature of attachment bonds through their behavioral and emotional expressions. By modeling them as point-agents moving in a two-dimensional arena, we simulated child-mother interactions for the avoidant and ambivalent attachment dimensions. The generated dynamical patterns – characterized by the alternation between approach and exploration – matched those described in the attachment literature, thereby confirming the implementability and validity of the DP. (shrink)

A comparison between ecl. 1 and ecl. 10 shows not only the deep differences of the new Virgilian pastoral poetry from Theocritus’ bucolic, but confirms that even Virgil lacked confidence in the power of poetry to solace real sorrow, an idea maintained throughout the whole Bucolicon liber. Interesting analogies between the first and the last eclogue help furthermore to explain Virgil’s farewell to his bucolic production.

Name der Zeitschrift: Philologus Jahrgang: 159 Heft: 2 Seiten: 282-300.

The reference to the rising and setting of the sun to indicate the unceasing duration of an action becomes a τόπος in Latin poetry from an influential distich of Cinna onwards, which was reworked a number of times in Augustan poetry. As well as Vergil and Horace, who adapt the model to different genres and occasions, the treatment of it by the elegists is interesting, in whom the two terms that define East and West are set in relation to the (...) eternity of poetic renown. This transformation may go back to Gallus, to whom Ovid, above all, makes significant references. The numerous occurrences of the τόπος in different authors and genres make possible interesting comparisons. (shrink)

This festschrift for Teddy Seidenfeld is a collection of newly commissioned essays on imprecise probability by leading experts in the field. Each contribution touches on Teddy’s seminal contributions to the field of imprecise probability, and gives an up-to-date state of the field that cannot be found elsewhere. The title, “a reflection on the foundations of probability and statistics”, calls back to Teddy’s seminal book, “Rethinking the Foundations of Probability and Statistics”, bookends to a career that has made fundamental contributions to (...) the foundations of probability and statistics, and shaped the field of imprecise probability. It is aimed at scholars engaged in probability and statistics. (shrink)

Some recent studies have highlighted a link between a favorable childhood environment and the strengthening of neuronal resilience against the changes that occur in natural aging neurodegenerative disease. Many works have assessed the factors —both internal and external — that can contribute to delay the phenotype of an ongoing neurodegenerative brain pathology. At the crossroads of genetic, environmental and lifestyle factors, these relationships are unified by the concept of cognitive reserve (CR). This review focuses on the protective effects of maintaining (...) this CR through the cognitive aging process, and emphasizes the most essential time in life for the development and strengthening of this CR. The in-depth study of this research shows that early stimulation with regard to social and sensory interactions, contributes to the proper development of cognitive, affective and psychosocial capacities. Childhood thus appears to be the most active phase in the development of CR, and as such we hypothesize that this constitutes the first essential period of primary prevention of pathological aging and loss of cognitive capacities. If this hypothesis is correct, early stimulation of the environment would therefore be considered as a true primary prevention and a public health issue. The earlier identification of neurodevelopmental disorders, which can affect personal and professional development across the lifespan, could therefore have longer-term impacts and provide better protection against aging. (shrink)

A substantial guide providing an overview of both physicalism and metaphysical naturalism, reviewing both questions of formulation and justification for both doctrines. Includes a diagnostic strategy for understanding talk of naturalism as a metaphysical thesis.

Born out of a major international dialogue held at the Fondazione Giorgio Cini in Venice, Italy, this collection of essays presents innovative and provocative arguments about the claims of universal knowledge schemes and the different aesthetic and material forms in which such claims have been made and executed. Contributors take a close look at everything from religious pilgrimages, museums, and maps of the world, to search engines and automated GPS. Current obsessions in information technology, communications theory, and digital culture often (...) concern the value and possibility of a grand accumulation of universally accessible forms of knowledge: total libraries, open data bases, ubiquitous computing, and 'smart' technologies. These obsessions have important social and philosophical origins, and they raise profound questions about the very nature of knowledge and its organization. This volume's contributors draw on the histories of maps and of encyclopedias, worldviews and visionary collections, to make sense of the crucial relation between the way the world is known and how it might be displayed and transformed. (shrink)

We perceive smells as perduring complex entities within a distal array that might be conceived of as smellscapes. However, the philosophical orthodoxy of Odor Theories has been to deny that smells are perceived as having a distal location. Recent challenges have been mounted to Odor Theories’ veracity in handling the timescale of olfactory perception, how it individuates odors as a distal entities, and their claim that olfactory perception is not spatial. The paper does not aim to dispute these criticisms. Rather, (...) what will be shown is that Molecular Structure Theory, a refinement of Odor Theory, can be further developed to handle these challenges. The theory is further refined by focusing on distal perception that requires considering the perceptual object as mereologically complex persisting odor against a background scene conceived of as a smellscape. What will be offered is an expansion of Molecular Structure Theory to account for distal smell perception within natural environments. (shrink)

Inside What Would Plato Do?, you'll find the basics of philosophy, written in an easy, digestible way we can all understand, along with questions to help you apply these important theories to your own life. So, after you've learned about a philosophical concept, you'll then be challenged to test yourself and see how the results can impact your daily life. For instance, after learning about Kant's theory of morality and the importance of intention you're challenged with questions like: Can good (...) people do bad things? Was there a time when you intended to do something helpful that ended up being hurtful? Does that make you a good person (because you intended to do good) or a bad person (because the results were bad)? What Would Plato Do? will not only help you better understand some of the greatest thinkers ever but will also help you think of the world around you in a whole new way! (shrink)

This paper is a review of the influence that lógos has had on ancient Greek, Jewish, and Christian writings. During the philosophical era known as Middle Platonism, the concept/ontology of the lógos played a unique role in enabling Pagan, Jewish, and Christian intellectuals to communicate on a small space of common ground.