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    Causality and the Chaotic Nature of the Systems

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    The author points out that in some cases there are two distinct descriptions of the same phenomenon. The first one by means of the theory of chaos, the second - by the theory of causal relationship. The thesis is that these descriptions are not inconsistent but appear at different levels of abstraction

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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

    Comments on Aldo Bressan’s paper

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    At a conference in Athen some time ago, I had the honour to comment on Aldo Bressan’s lecture “On certain notions, partly extensional and partly modal, relevant for the semantics of general relativity”. A version of this lecture constitutes the first part of his paper “Again on relativistic semantics”. At Aldo Bressan’s request, I will outline the criticism put forward at the Athens conference. My comment does not, however, pertain to the second part of the preceding publication. Bressan’s considerations on time and causality — which in fact illustrate the capability of the previously explained technical apparatus — are enlightening and truly stimulating

    O formalizacji związku przyczynowego

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    Im Rahmen der formalen Logik versucht man auf verschiedene Art und Weise Implikationen zu definieren, die den intuitiven Gehalt der "weil..., darum..." Beziehung wiedergeben. Einige dieser Formalisierungsansätze werden vorgestellt. Am Beispiele einer auf Jaśkowski zurückgehenden Konzeption wird demonstriert, wie man kausale Beziehungen repräsentierende Funktoren semantisch charakterisieren kann. Man konstruiert dazu zunächst n-dimensionale Kripke-Modelle, in denen eine nichtklassische aussagenlogische Sprache interpretiert wird. Die Ausdrucksmittel der Sprache gestatten die Definition verschiedener Kausalfunktoren, deren Eigenschaften überdies von der jeweiligen Modellklasse abhängen. Man erhält also eine Vielzahl formaler Entsprechungen für die intuitive Kausalbeziehung, unter denen die den jeweiligen Anschauungen am nächsten kommende auszuwählen ist

    On causality. Ingarden's analysis vs. Jaśkowski’s logic

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    Considering the growing need for formal counterparts of causal nexus (AI is desperately looking for a good one!) and thus trying to construct appropriate relations within a formal framework one faces the problem that the notion of “causal connection” is by no means explained with sufficient precision. How to overcome the resulting difficulties

    Making use of logic

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    It seems that Polish logic has always been open to considerations concerning the use of methods and results of formal logic within disciplines. We overview a couple of such Polish contributions to what may be called the realm of applied logic. We take a closer look at the formalization of natural reasoning, inconsistency-tolerant logic, and at the formal analysis of causal nexus

    Just lying

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    Lying is an ubiquitous element of communication. Amazingly enough, the topic is almost completely ignored by traditional logic. The usual example, Eubulides’ antinomy, is not a good one: intuitively, “the Liar” doesn’t lie. There are not many further approaches to be found in the literature. Why is this? There are quite a few reasons. We will consider them one by one and disclose further properties of lies at the same time. We sketch a general framework for the formal analysis of lying. As a result we observe that non-adjunctive calculi fits in here quite comfortably
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