In previous decades, numerous involvements of adolescents in deviant behavior have been increasing, and previous researchers examined different variables that may influence these phenomena. This study was designed to look for the possible predictors of deviant behavior, as well as its association with family satisfaction and personality traits. The study was conducted on 1500 participants ages 12–19 years old from selected schools in Nueva Ecija. The researchers used the Deviant Behavior Variety Scale by Sanches et al.. It consists of 19 (...) items of a variety of deviant action such as thefts, drug and alcohol consumption, verbal and physical aggression, possession of weapons, vandalism, truancy, lies and defiance of authority, and selling drugs among adolescents. Out of 1500 samples, 1227 met the criteria for the deviant behavior scale. Descriptive and Inferential statistics such as Mean, sd, frequency, percentage, Regression analysis, Pearson-correlation, and Mann Whitney U test were used to analyze this study. The research found that there are differences in levels of deviant behavior among sexes. Results showed that female participants have higher tendency to engage in minor infractions of deviant acts, while males had a higher rate of participation in severe infractions of deviant acts. Moreover, there is a negative/inverse association between family satisfaction and deviant behavior. This implies that respondents who participate more in deviant behaviors are found to be less satisfied with their family life, while respondents who participate less in deviant behavior are more satisfied in their family life. Lastly, the current study found that personality trait-agreeableness is found to be the best predictor of deviant behavior among adolescents. (shrink)

A graph-theoretic account of logics is explored based on the general notion of m-graph (that is, a graph where each edge can have a finite sequence of nodes as source). Signatures, interpretation structures and deduction systems are seen as m-graphs. After defining a category freely generated by a m-graph, formulas and expressions in general can be seen as morphisms. Moreover, derivations involving rule instantiation are also morphisms. Soundness and completeness theorems are proved. As a consequence of the generality of the (...) approach our results apply to very different logics encompassing, among others, substructural logics as well as logics with nondeterministic semantics, and subsume all logics endowed with an algebraic semantics. (shrink)

In this article we explore multiple change operators, i.e., operators in which the epistemic input is a set of sentences instead of a single sentence. We propose two types of change: prioritized change, in which the input set is fully accepted, and symmetric change, where both the epistemic state and the epistemic input are equally treated. In both kinds of operators we propose a set of postulates and we present different constructions: kernel changes and partial meet changes.

We present different constructions for nonprioritized belief revision, that is, belief changes in which the input sentences are not always accepted. First, we present the concept of explanation in a deductive way. Second, we define multiple revision operators with respect to sets of sentences (representing explanations), giving representation theorems. Finally, we relate the formulated operators with argumentative systems and default reasoning frameworks.

We first state a few previously obtained results that lead to general undecidability and incompleteness theorems in axiomatized theories that range from the theory of finite sets to classical elementary analysis. Out of those results we prove several incompleteness theorems for axiomatic versions of the theory of noncooperative games with Nash equilibria; in particular, we show the existence of finite games whose equilibria cannot be proven to be computable.

We first state a few previously obtained results that lead to general undecidability and incompleteness theorems in axiomatized theories that range from the theory of finite sets to classical elementary analysis. Out of those results we prove several incompleteness theorems for axiomatic versions of the theory of noncooperative games with Nash equilibria; in particular, we show the existence of finite games whose equilibria cannot be proven to be computable.

In 1996, W. Veldman and F. Waaldijk present a constructive (intuitionistic) proof for the homogeneity of the ordered structure of the Cauchy real numbers, and so this result holds in any topos with natural number object. However, it is well known that the real numbers objects obtained by the traditional constructions of Cauchy sequences and Dedekind cuts are not necessarily isomorphic in an arbitrary topos with natural numbers object. Consequently, Veldman and Waaldijk's result does not apply to the ordered structure (...) of Dedekind real numbers in toposes. The main result to be proved in the present paper is that the ordered structure of the Dedekind real numbers object is homogeneous, in any topos with natural numbers object. This result is obtained within the framework of local set theory. (shrink)

This work considers the formalisation of the merging process of stratified belief bases, where beliefs are stored in different layers or strata. Their strata are ranked, following a total order, employing the value the agent using the belief base assigns to these beliefs. The agent uses an argumentation mechanism to reason from the belief base and obtain the final inferences. We present two ways of merging stratified belief bases: the first is defined by merging two strata without belief preservation, and (...) the second by merging two strata with belief preservation. For these operators, as layers merge, it is possible that some information has to be deleted from the stratum to maintain consistency. The latter merge operator will be defined as performing their actions so that information removed from the stratum is preserved after the merging by moving it to a stratum containing information perceived as having a lower value and where those beliefs may trigger a new revision, possibly starting a cascading effect. (shrink)

Gianni Vattimo associates “mystic” and metaphysics. The “forgetting of the being” would be coextensive to the abandonment (Gelassenheit) or to the mystic “losing oneself” (Versenkung) in the absolute. Based on this, the article analyzes the relevance and the possibility of the vattimiana hermeneutics referring to (Verwindung) “the mystic” to surpass it. The perspective of the hermeneutic ethics of Vattimo defends that the history of modernity, in its nihilism and secularization, keeps traces of the history of the salvation inaugurated by the (...) Jewish-Christian perspective. The “mystical losing oneself” contradicts the Pauline experience of the preparation of parusía. Based on Heidegger, the Italian philosopher defends that, considering the imminent parusía, the authenticity of the temporal experience to the Pauline Christian, meant going through, with faith, the present tribulation in the caducity of the historical contingency, hindering the mystical Versenkung and its respective evasion in the daily efforts. In favor of this persistence/effort, it is glimpsed cáritas, inaugurated by the kénosis in the East, as the optimum authenticity criterion for a contemporary spirituality; because cáritas would imply, in its opposition to the implicit violence of the absolute fundamentals, the recognition of the bond between the spiritual and the nihilist and secularized East. (shrink)

O livro almeja ser representativo nos principais debates contemporâneos, oferecendo uma visão panorâmica sobre o campo na atualidade e permitindo-se aprofundar em algumas discussões selecionadas.O ambiente não pode ser reduzido ao “meio ambiente”, à natureza não humana. Ele não é meramente algo que “nos envolve”, um envoltório: o ambiente somos também nós, seres humanos, histórica e culturalmente situados. Quanto aos territórios, eles se estabelecem em íntima conexão com os ambientes em suas dimensões paisagística e material, quer sejam os processos geoecológicos, (...) quer sejam as formas e as dinâmicas socialmente produzidas. Analisar os territórios significa examinar como, a cada momento, os ambientes, seus recursos e significados são disputados e viram objeto de conflitos.O público-alvo principal são os estudantes dos últimos anos da graduação, além daqueles em nível de pós-graduação, de todas as áreas que lidam com problemas e conflitos ambientais. Afora os pesquisadores iniciantes e os jovens universitários em geral, porém, podemos presumir que profissionais experientes também poderão tirar proveito do material de diversos capítulos. É razoável, por fim, nutrir a expectativa de que muito do que este livro contém possa (retro)alimentar o ativismo ambiental crítico e a prática de combater as iniquidades e as distorções que se acumulam em nossas sociedades, principalmente as muitas situações de flagrante injustiça ambiental. (shrink)

Do all questions have answers? How much can we know about the world? Is there such a thing as an ultimate truth? To be human is to want to know, to understand our origins and the meaning of our lives. In The Island of Knowledge, physicist Marcelo Gleiser traces our search for answers to the most fundamental questions of existence, the origin of the universe, the nature of reality, and the limits of knowledge. In so doing, he reaches a (...) provocative conclusion: science, the main tool we use to find answers, is fundamentally limited. As science and its philosophical interpretations advance, we are often faced with the unsettling recognition of how much we don't know. Limits to our knowledge of the world arise both from our tools of exploration and from the nature of physical reality: the speed of light, the uncertainty principle, the second law of thermodynamics, the incompleteness theorem, and our own limitations as an intelligent species. Our view of physical reality depends fundamentally on who we are and on how we interact with the cosmos. (shrink)

The growing interest and major advances of the last decades in evolutionary developmental biology (EvoDevo) have led to the recognition of the incompleteness of the Modern Synthesis of evolutionary theory. Here we discuss how paleontology makes significant contributions to integrate evolution and development. First, extinct organisms often inform us about developmental processes by showing a combination of features unrecorded in living species. We illustrate this point using the vertebrate fossil record and studies relating bone ossification to life history traits. Second, (...) we discuss exceptionally preserved fossils that document rare ontogenetic sequences and illustrate this case with the patterns of heterochrony observed in Cambrian crustacean larvae preserved three-dimensionally. Third, most fossils potentially document the evolutionary patterns of allometry and modularity, as well as some of the (paleo)ecological factors that had influenced them. The temporal persistence of adaptive patterns in rodent evolution serves to address the importance of ecological constraints in evolution. Fourth, we discuss how the macroevolutionary patterns observed in the tetrapod limb, in the mammal molar proportions, and in the molluscan shell provide independent tests of the validity of morphogenetic models proposed on living species. Reciprocally, these macroevolutionary patterns often act as a source of inspiration to investigate the underlying rules of development, because, at the end, they are the patterns that the neo-Darwinian theory was unable to account for. (shrink)

After a brief promenade on the several notions of translations that appear in the literature, we concentrate on three paradigms of translations between logics: ( conservative ) translations , transfers and contextual translations . Though independent, such approaches are here compared and assessed against questions about the meaning of a translation and about comparative strength and extensibility of a logic with respect to another.

Novo livro do autor do best-seller A simples beleza do inesperado, vencedor do Jabuti. O caldeirão é onde se misturam ingredientes visando sua transmutação. É o laboratório onde buscamos alguma forma de transcendência, o portal que nos transporta a uma nova realidade. Em O caldeirão azul, Marcelo Gleiser reúne ensaios provenientes de sua reflexão sobre as questões que considera mais relevantes para o momento atual: nossa relação com o planeta e suas criaturas, com os membros da sociedade em que (...) vivemos, e com a tecnologia, que está transformando quem somos e como nos relacionamos. O tema que conecta todos os textos é a visão da ciência como produto da nossa capacidade de nos maravilhar com o mundo toda vez que nos engajamos com o mistério da criação. Na sua essência, encontramos o mesmo ímpeto que move o espírito religioso: como lidar com nossas questões existenciais mais profundas, nossa origem, nossa vida, nossa morte. Nesta obra, Gleiser nos lembra que a ciência, aliada à nossa busca por respostas e nosso fascínio pelo mistério que nos cerca, pode ser usada tanto como ponte para um mundo melhor, como para construir a pior distopia imaginável. E nos convida a refletir – e decidir – sobre o futuro que queremos para nós, respeitando as diferenças de cada um e estando abertos para aprender com os que pensam de outras formas. (shrink)

O artigo preconiza a relevância pedagógica da filosofia da não-significação de Albert Camus, especialmente em O Mito de Sísifo. O eixo argumentativo segue a última frase deste livro: “É preciso imaginar Sísifo feliz”. A certeza da existência e a estranheza de se inserir num cenário de catástrofe, sem esperança, suscita em estudantes, especialmente da rede pública, um “sentimento da absurdidade”, mas esse estado não há de ser visto como maldição. A liberdade paradoxalmente advém quando se assume o absurdo como meio (...) de se afirmar a vida, contra os suicídios físico e filosófico, tornando Sísifo o “herói absurdo”. Camus atribui ao pensamento de Søren Kierkegaard a proposta do suicídio filosófico como sacrifício do intelecto pelo salto kiekegaardiano da fé porque ele entende a felicidade encontrada na vida eterna como uma superação e cura da doença mortal do desespero. O esforço dialético de autorreflexão da consciência entre o finito e o infinito faz da resignação infinita uma preparação para o salto da fé. Para nosso autor, porém, o pior mal é não ter sofrido desespero, pois é a partir dele que imaginativamente o absurdo, como potência existencial, transfigura-se numa “revolta metafísica” — uma posição a ser desenvolvida no processo de ensino-aprendizagem em Filosofia. Palavras-chave: Albert Camus. Absurdo. Imaginação. Ensino de Filosofia. (shrink)

This paper is an attempt to implement Gilles Deleuze's theory of the series and the event, and the related function of the empty square (as formulated primarily in The Logic of Sense), in relation to the geopolitical regime comprising ‘Israel proper’ and the system of occupation in the West Bank and the Gaza Strip. The purpose of this exercise is to help establish a practical access to Deleuze's philosophies, and to offer a clinical account of the Israeli occupation of the (...) Palestinian territories. (shrink)

In this paper we propose a very general de nition of combination of logics by means of the concept of sheaves of logics. We first discuss some properties of this general definition and list some problems, as well as connections to related work. As applications of our abstract setting, we show that the notion of possible-translations semantics, introduced in previous papers by the first author, can be described in categorial terms. Possible-translations semantics constitute illustrative cases, since they provide a new (...) semantical account for abstract logical systems, particularly for many-valued and paraconsistent logics. (shrink)

Michel Foucault is one of the most preeminent theorists of power, yet the relationship between his militant activities and his analysis of power remains unclear. The book explores this relationship to explain the development of Foucault's thinking about power. Using newly translated and unpublished materials, it examines what led Foucault to take on the question of power in the early 1970s and subsequently refine his thinking, working through different models (war and government) and modalities (sovereign, disciplinary, biopolitical, pastoral and governmental). (...) Looking at Foucault's political trajectory, from his involvement with the prisoner support movement and Solidarity to his controversial engagement with the Iranian revolution, the book shows the militant underpinning of his interest in the question of power and its various shifts and mutations. This thorough account, which includes the first translation of a report edited by Foucault on prison conditions, will provide students in contemporary political theory with a better understanding of Foucault's thinking about power and of the interplay between political activities and theoretical productions. (shrink)

We propose in this paper a family of algebraic models of ZFC based on the three-valued paraconsistent logic LPT0, a linguistic variant of da Costa and D’Ottaviano’s logic J3. The semantics is given by twist structures defined over complete Boolean agebras. The Boolean-valued models of ZFC are adapted to twist-valued models of an expansion of ZFC by adding a paraconsistent negation. This allows for inconsistent sets w satisfying ‘not (w = w)’, where ‘not’ stands for the paraconsistent negation. Finally, our (...) framework is adapted to provide a class of twist-valued models generalizing Löwe and Tarafder’s model based on logic (PS 3,∗), showing that they are paraconsistent models of ZFC. The present approach offers more options for investigating independence results in paraconsistent set theory. (shrink)

The Einstein–Podolsky–Rosen–Bohm (EPRB) experiment performed with random variable and spatially separated analyzers is a milestone test in the controversy between Objective Local Theories (OLT) and Quantum Mechanics (QM). Only a few OLT are still possible. Some of the surviving OLT (specifically, the so called non-ergodic theories) would be undetectable in the averaged statistical values, but they may leave their trace in the time dynamics. For, while QM predicts random processes, the OLT of this kind predict the existence of regularities that (...) may be revealed as a low dimensional object in the phase space. We perform a numerical analysis of the time-resolved data recorded in that experiment to unveil any hypothetical low dimensional dynamics that may be present. We find no consistent indication of such dynamics except for one data file, the longest of all in the real time. The possible causes of these dynamics are discussed. (shrink)

No cinema brasileiro recente, o diálogo entre o documentário e a ficção tem merecido destaque, com produções de baixo orçamento e ideias originais. É o caso de Santiago (João Moreira Salles, 2007) e Viajo Porque Preciso, Volto Porque Te Amo (Marcelo Gomes, Karim Aïnouz, 2009), filmes que trabalham esse diálogo de forma sutil e diegética, ressignificando imagens de um arquivo próprio, pessoal.

The Joy of Not Knowing takes every aspect of the curriculum and of school life and transforms it into a personalised, meaningful and enjoyable experience for all. It offers readers an innovative, theoretical and practical guide to establish a values-based, enquiry-led and challenge-rich learning to learn approach to teaching and learning and to school leadership. This thought-provoking guide provides the reader with a wealth of whole-class, easy-to-implement, malleable, practical ideas and case studies that can be personalised to the vision of (...) each setting, age-group and curriculum. It brings together, as a whole-school framework, the strategies that have been shown to have the greatest impact on practitioner's professional fulfilment and on children's life chances, love of learning, intrinsic motivation and enthusiasm for wanting to know. The Joy of Not Knowing: enables schools to launch the academic year with a bespoke JONK Learning to Learn Week that enables every student to succeed; develops philosophical, creative and critical problem-solving and multi-lingual thinking skills; establishes collaborative cultures of thinking, learning and leadership; Informs practice through active action research; incorporates a values-led democratic approach to school life; nurtures school-pupil-family-community partnerships. Designed for school leaders and practitioners at all levels and across all ages, this practical guide shows how all students can thrive and develop the dispositions of successful lifelong learners and global citizens. (shrink)

From Fall 2016 to Fall 2019 Marcelo Gleiser conducted a series of nine public dialogues between eminent scientists and humanists on challenging topics and ideas whose very definitions and meanings are disputed. Sponsored by the Institute for Cross-Disciplinary Engagement at Dartmouth College, founded by Gleiser, these events were held in theaters and universities across the US and immediately followed by workshops, open to the public, at which attendees could converse directly with participants. Great Minds Don't Think Alike collects edited (...) versions of these discussions, which set an example, in a time when public discourse is seriously threatened, of how people can engage in a fruitful exchange of ideas even when they strongly disagree. The cast of characters is stellar: David Chalmers and Antonio Damasio on consciousness, Sean Carroll and Alan Wallace on reality, Patricia Churchland and Jill Tarter on the future of intelligence, Rebecca Goldstein and Alan Lightman on faith, Jimena Canales and Paul Davies on time, Ed Boyden and Mark O'Connell on transhumanism, Elizabeth Kolbert and Siddhartha Mukherjee on immortality, and Jeremy DeSilva, David Grinspoon, and Tasneem Zehra Husain on being human. (shrink)

L'œuvre de Michel Foucault est inclassable car elle traverse des domaines très variés (philosophie, sociologie, histoire, anthropologie, criminologie, médecine, psychologie, linguistique, droit, etc.). Foucault n'est pas un sociologue au sens classique du terme. Il existe une sociologie puissante et novatrice chez lui. Mais laquelle? À quoi peut-elle servir aujourd'hui? En quoi est-elle utile pour théoriser les problèmes sociaux? Quels sont ses avantages et ses inconvénients? Quel type de « raisonnement sociologique » se dégage de son œuvre et quelles sont ses (...) limites? Voilà les interrogations qui guident l'analyse de l'ensemble des travaux de Foucault dans cet ouvrage. En suivant l'évolution historique de ses recherches ainsi que les retournements stimulants de sa pensée, Foucault Sociologue s'organise en neuf chapitres qui suivent l'évolution théorique, méthodologique et chronologique des thématiques foucaldiennes. Marcelo Otero est professeur titulaire au Département de sociologie de l'Université du Québec à Montréal (UQAM), chercheur au Centre de recherche de Montréal sur les inégalités sociales, les discriminations et les pratiques alternatives de citoyenneté (CREMIS), au groupe sur le médicament comme objet social (MÉOS) et à l'Institut Santé et Société (ISS). Ses recherches portent sur les nouveaux problèmes de santé mentale et les problèmes sociaux complexes."--Quatrième de couverture. (shrink)

From Fall 2016 to Fall 2019 Marcelo Gleiser conducted a series of nine public dialogues between eminent scientists and humanists on challenging topics and ideas whose very definitions and meanings are disputed. Sponsored by the Institute for Cross-Disciplinary Engagement at Dartmouth College, founded by Gleiser, these events were held in theaters and universities across the US and immediately followed by workshops, open to the public, at which attendees could converse directly with participants. Great Minds Don't Think Alike collects edited (...) versions of these discussions, which set an example, in a time when public discourse is seriously threatened, of how people can engage in a fruitful exchange of ideas even when they strongly disagree. The cast of characters is stellar: David Chalmers and Antonio Damasio on consciousness, Sean Carroll and Alan Wallace on reality, Patricia Churchland and Jill Tarter on the future of intelligence, Rebecca Goldstein and Alan Lightman on faith, Jimena Canales and Paul Davies on time, Ed Boyden and Mark O'Connell on transhumanism, Elizabeth Kolbert and Siddhartha Mukherjee on immortality, and Jeremy DeSilva, David Grinspoon, and Tasneem Zehra Husain on being human. (shrink)

The subject of this book is the social and political meaning of constitutional texts to the detriment of their legal concretization. Focusing on the discrepancy between the hypertrophically symbolic function of constitutions and their insufficient legal concretization, it offers a critical counterpoint to constitutional theory that treats constitutional texts as a panacea to solving political, legal, and social problems. In contrast to the premises of Niklas Luhmann's systems theory regarding law and constitution in world's society, symbolic constitutionalization is approached here (...) in both a comprehensive and far-reaching perspective. Chapter 1 sets out the debate about symbolic legislation. Chapter 2 explains the notion of symbolic constitutionalization as a problem embracing the whole legal system. Chapter 3 approaches the issue in terms of allopoiesis of law, characterizing it primarily as a problem in peripheral modernity and referring to the Brazilian experience. The final chapter discusses the tendency to a symbolic constitutionalization of world society in the scope of a paradoxical peripheralization of the centre. (shrink)

In this paper the propositional logic LTop is introduced, as an extension of classical propositional logic by adding a paraconsistent negation. This logic has a very natural interpretation in terms of topological models. The logic LTop is nothing more than an alternative presentation of modal logic S4, but in the language of a paraconsistent logic. Moreover, LTop is a logic of formal inconsistency in which the consistency and inconsistency operators have a nice topological interpretation. This constitutes a new proof of (...) S4 as being "the logic of topological spaces", but now under the perspective of paraconsistency. (shrink)

Kant, los sábados por la tarde -- ¿Andaría en algo Sócrates? -- El álef de "El Aleph" -- La angustia ya no se lleva -- El tango de la muerte -- Los ilotas y la juventud maravillosa -- Los jóvenes en Flores -- El filósofo y la princesa.

Derk Pereboom and Gregg Caruso argue that humans are never morally responsible for their actions and take that thesis as a starting point for a project whose ultimate goal is the reform of responsibility practices, which include expressions of praise, blame, and the institution of legal punishment. This paper shares the skeptical concern that current responsibility practices can be suboptimal and in need of change, but argues that a non-skeptical pursuit of those changes is viable and more promising. The main (...) lines of the argument are developed by assessing the prospects of implementing one of the changes favored within the skeptical project (namely, the reduction of punishment severity) in light of how human moral psychology works. An original vignette experiment (N = 180; participants from Facebook groups related to Brazilian universities) asked participants to recommend sentences for a fictitious criminal after considering alternatives to regular punishment that varied in their effectiveness to prevent reoffending. The results suggest that people can become less punitive even if they continue to believe in moral responsibility and free will. The paper further argues that reforming responsibility practices is more likely to occur without the endorsement of skepticism. (shrink)

Modern societies often claim to be democracies in order to enjoy greater legitimacy. Still, to understand the concept of democracy and how to justify it, the definition of it as self-determined is not sufficient. A complex understanding has to take into account ideas of rule of law as well as human rights. Sometimes these three concepts compete with each other - particularly in societies with a pluralistic approach to what "the good life" should be, such as societies which are made (...) up of distinct cultural backgrounds. This book presents a concept of democracy that encompasses at the same time the ideas of rule of law, human rights and self-determination. It contains the main lectures of the XXVI World Congress of Philosophy of Law and Social Philosophy, hosted by the Internationale Vereinigung fur Rechts- und Sozialphilosophie at the Universidade Federal de Minas Gerais (Brazil) in July 2013. (shrink)

The book provides an overview of how international law is today constructed through diverse macro and microprocesses that expand its traditional subjects and sources, with the attribution of sovereign capacity and power to the international plane (moving the international toward the national). Simultaneously, national laws approximate laws of other nations (moving among nations or moving the national toward the international), and new sources of legal norms emerge, independent of states and international organisations. This expansion occurs in many subject areas, with (...) specific structures: commercial, environmental, human rights, humanitarian, financial, criminal, and labor law contribute to the formation of postnational law with different modes of functioning, different actors, and different sources of law that should be understood as a new complexity of law. (shrink)

This study analyzes the possible occurrence of plagiarism and self-plagiarism in a sample of articles published in the Scientific Periodicals Electronic Library, an open database that indexes business journals in Brazil. The author compared one sample obtained in 2013 and another selected from 2018. In both samples, we verified the guidelines that each of the journals provided to authors regarding plagiarism and the adoption of software to detect textual similarities. In the analysis conducted in 2013, it was found that only (...) one journal mentioned the word “plagiarism” in its policies, although the majority of the directives required guarantees that no type of violation of authors’ rights was contained in the manuscript. In the analysis conducted in 2013, it was determined that there were literal reproductions in 31 published articles, and no relevant similarities with other publications were encountered in 16 articles. In the 2018 analysis, 69 of the publications included observations and guidelines related to plagiarism and self-plagiarism. In the analysis conducted in 2018, it was found that similarities occurred in 52 articles, and no relevant evidence of plagiarism or self-plagiarism was found in 66 manuscripts. Although a reduction in the index of the occurrence of plagiarism was observed, as was an increase in the instructions on the prevention of plagiarism by authors, practices directed at guiding authors by means of directives concerning the importance of preventing plagiarism in manuscripts submitted for publication can be recommended. (shrink)

Suszko's Thesis maintains that many-valued logics do not exist at all. In order to support it, R. Suszko offered a method for providing any structural abstract logic with a complete set of bivaluations. G. Malinowski challenged Suszko's Thesis by constructing a new class of logics (called q-logics by him) for which Suszko's method fails. He argued that the key for logical two-valuedness was the "bivalent" partition of the Lindenbaum bundle associated with all structural abstract logics, while his q-logics were generated (...) by "trivalent" matrices. This paper will show that contrary to these intuitions, logical two-valuedness has more to do with the geometrical properties of the deduction relation of a logical structure than with the algebraic properties embedded on it. (shrink)

There are two foundational, but not fully developed, ideas in paraconsistency, namely, the duality between paraconsistent and intuitionistic paradigms, and the introduction of logical operators that express meta-logical notions in the object language. The aim of this paper is to show how these two ideas can be adequately accomplished by the Logics of Formal Inconsistency (LFIs) and by the Logics of Formal Undeterminedness (LFUs). LFIs recover the validity of the principle of explosion in a paraconsistent scenario, while LFUs recover the (...) validity of the principle of excluded middle in a paracomplete scenario. We introduce definitions of duality between inference rules and connectives that allow comparing rules and connectives that belong to different logics. Two formal systems are studied, the logics mbC and mbD, that display the duality between paraconsistency and paracompleteness as a duality between inference rules added to a common core– in the case studied here, this common core is classical positive propositional logic (CPL + ). The logics mbC and mbD are equipped with recovery operators that restore classical logic for, respectively, consistent and determined propositions. These two logics are then combined obtaining a pair of logics of formal inconsistency and undeterminedness (LFIUs), namely, mbCD and mbCDE. The logic mbCDE exhibits some nice duality properties. Besides, it is simultaneously paraconsistent and paracomplete, and able to recover the principles of excluded middle and explosion at once. The last sections offer an algebraic account for such logics by adapting the swap-structures semantics framework of the LFIs the LFUs. This semantics highlights some subtle aspects of these logics, and allows us to prove decidability by means of finite non-deterministic matrices. (shrink)