1,721,208 research outputs found
Theories of paradox from Thomas Bradwardine to Paul of Venice
No full textWe can divide medieval discussions of the insolubles—logical paradoxes such as the Liar—into two main periods, before and after Bradwardine, who wrote his treatise on Insolubles in Oxford in the early 1320s. Bradwardine's aim was to develop a solution to the insolubles which, unlike the then dominant theories, restrictio and cassatio, placed no restriction on self-reference or the theory of truth. He claimed to be able to prove that insolubles signify not only that they are false but also that they are true, and so are false. Few subsequent writers on insolubles followed him completely. Nonetheless, Heytesbury's solution agrees with Bradwardine's that there is an additional signification, though he was agnostic what that additional signification was; and a popular solution commonly found in the teaching manuals at Oxford modified Heytesbury's solution to incorporate aspects of Bradwardine's. There were remarkably similar developments at Paris, where Buridan's solution also claimed that propositions have an additional signification or implication of their own truth. Gregory of Rimini claimed that (spoken and written) insolubles correspond to a conjunction of two mental propositions, one of which says that the other is false. Gregory's solution was taken up and adapted by Peter of Ailly, arguing that the phenomena are better explained by realising that insolubles are equivocal, both true and false, corresponding to two different mental propositions. In contrast, Roger Swyneshed's aim was to provide a solution without the postulation of hidden meanings, but taking the expressions at face value. At the end of the century, Paul of Venice subscribes to the modified Heytesbury solution in his Logica Parva, but in his Logica Magna he defends a version of Swyneshed's solution
Walter Segrave's 'Insolubles':a restrictivist response to Bradwardine
No full textWalter de Segrave was at Merton College, Oxford from 1321 until at least 1338. Segrave's 'Insolubles' is his only known work, which appears to have been composed at Oxford in the late 1320s or early 1330s, consistent with the fact that it is clearly a response to Bradwardine's own 'Insolubles', composed when Bradwardine was regent master at Balliol College, that is, from 1321-23, before he moved to Merton in 1323. The dominant theory at the time Bradwardine was writing was restrictivism, the claim that a part cannot supposit for the whole of which it is part (and consequently, for its contradictory or anything convertible with it), at least in the presence of a privative term, in particular, privative alethic and epistemic terms such as 'false' and 'unknown'. Accordingly, Bradwardine spends two and a half chapters attacking restrictivist theories, in particular, that of Walter Burley. Segrave's treatise is an extensive and detailed response to Bradwardine. He defends restrictivism by presenting a well-thought out reason for the restriction of supposition required to avoid contradiction. Where Burley and Bradwardine both attributed the fallacy in insolubles to what Aristotle described as the fallacy of the conditional and the unconditional (secundum quid et simpliciter), Segrave attributed it to the fallacy of accident, turning on a variation in the supposition of the middle term and the extremes in what might otherwise appear to be a sound syllogism
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Technology and Transition: ‘Progressive Evolution of Regimes and the Consequences for Energy Regime Change
No full textAbstractTransition of energy systems has been under-theorised. We have argued previously that energy efficiency as a strategy for fossil fuel replacement is inadequate as energy demand is not being reduced by efficiency alone. This paper is intended to elaborate further on the reasons. We require better answers to better questions about the nature of energy regimes and how they resist change. Our present-day socio-technical energy regime is a global integrated technical arrangement based on cheap high-yield energy sources (fossil fuels) with built-in ‘progressive’ social and economic directions. This ‘progressive’ change relies on cheap energy as a resource towards ever greater global integration and economic efficiency. Energy regime change will be not a tinkering at the edges but will require a dismantling of this ‘progressive’ tendency with radical retrogressive economic and social consequences. We conclude a change of our relationship with energy will require the reversal of a contingent ‘progressive’ tendency that is as old as mankind and the necessarily modest building of a new infrastructural apparatus designed to a new ‘end’, or the reversion to previous low or lower demand apparatus based on non-fossil energy sources. Both solutions would imply major social and economic changes which we will deal with in another paper
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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