Results for 'Luis Roca Jusmet'

682 found
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  1. Fisiologia Clínica do Ciclo Estral de Vacas Leiteiras: Desenvolvimento Folicular, Corpo Lúteo e Etapas do Estro.Emanuel Isaque Cordeiro da Silva - manuscript
    REPRODUÇÃO ANIMAL: O CICLO ESTRAL DE BOVINOS LEITEIROS – Desenvolvimento Folicular, Corpo Lúteo e Etapas do Estro ANIMAL REPRODUCTION: THE OESTROUS CYCLE OF DAIRY BOVINES -Follicular Development, Corpus Luteum and Stages of Estrus Apoio: Emanuel Isaque Cordeiro da Silva Departamento de Zootecnia da UFRPE E-mail: [email protected] WhatsApp: (82)98143-8399 FISIOLOGIA CLÍNICA DO CICLO ESTRAL DE BOVINOS LEITEIROS 1. RESUMO A fêmea bovina apresenta ciclos estrais em intervalos de 19 a 23 dias e estes só são interrompidos durante a gestação ou devido (...)
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  2. Modal Epistemology, Modal Concepts and the Integration Challenge.Sonia Roca-Royes - 2010 - Dialectica 64 (3):335-361.
    The paper argues against Peacocke's moderate rationalism in modality. In the first part, I show, by identifying an argumentative gap in its epistemology, that Peacocke's account has not met the Integration Challenge. I then argue that we should modify the account's metaphysics of modal concepts in order to avoid implausible consequences with regards to their possession conditions. This modification generates no extra explanatory gap. Yet, once the minimal modification that avoids those implausible consequences is made, the resulting account cannot support (...)
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  3. Essential Properties and Individual Essences.Sonia Roca-Royes - 2011 - Philosophy Compass 6 (1):65-77.
    According to Essentialism, an object’s properties divide into those that are essential and those that are accidental. While being human is commonly thought to be essential to Socrates, being a philosopher plausibly is not. We can motivate the distinction by appealing—as we just did—to examples. However, it is not obvious how best to characterize the notion of essential property, nor is it easy to give conclusive arguments for the essentiality of a given property. In this paper, I elaborate on these (...)
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  4. Modal Knowledge and Counterfactual Knowledge.Sonia Roca-Royes - 2011 - Logique Et Analyse 54 (216):537-552.
    The paper compares the suitability of two different epistemologies of counterfactuals—(EC) and (W)—to elucidate modal knowledge. I argue that, while both of them explain the data on our knowledge of counterfactuals, only (W)—Williamson’s epistemology—is compatible with all counterpossibles being true. This is something on which Williamson’s counterfactual-based account of modal knowledge relies. A first problem is, therefore, that, in the absence of further, disambiguating data, Williamson’s choice of (W) is objectionably biased. A second, deeper problem is that (W) cannot satisfactorily (...)
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  5. Essentialism vis-à-vis Possibilia, Modal Logic, and Necessitism.Sonia Roca-Royes - 2011 - Philosophy Compass 6 (1):54-64.
    Pace Necessitism – roughly, the view that existence is not contingent – essential properties provide necessary conditions for the existence of objects. Sufficiency properties, by contrast, provide sufficient conditions, and individual essences provide necessary and sufficient conditions. This paper explains how these kinds of properties can be used to illuminate the ontological status of merely possible objects and to construct a respectable possibilist ontology. The paper also reviews two points of interaction between essentialism and modal logic. First, we will briefly (...)
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  6. Peacocke’s Principle-Based Account of Modality: “Flexibility of Origins” Plus S4.Sonia Roca-Royes - 2006 - Erkenntnis 65 (3):405-426.
    Due to the influence of Nathan Salmon’s views, endorsement of the “flexibility of origins” thesis is often thought to carry a commitment to the denial of S4. This paper rejects the existence of this commitment and examines how Peacocke’s theory of the modal may accommodate flexibility of origins without denying S4. One of the essential features of Peacocke’s account is the identification of the Principles of Possibility, which include the Modal Extension Principle (MEP), and a set of Constitutive Principles. Regarding (...)
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  7. Luis Villoro. Filósofo mexicano y universal / Luis Villoro. A Mexican and Universal Philosopher.Alberto Luis López - 2017 - Murmullos Filosóficos 12 (6):123-128.
    Throughout the present text, an account of the main contributions of Luis Villoro Toranzo will be made as a tribute to three years after his death.
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  8. Evidential support and its presuppositions.Luis Rosa - forthcoming - In Hinge Epistemology and Religious Belief.
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  9. Aesthetic Higher-Order Evidence for Subjectivists.Luis Oliveira & Chris Mag Uidhir - 2023 - British Journal of Aesthetics 63 (2):235-249.
    Aesthetic subjectivism takes the truth of aesthetic judgments to be relative to the individual making that judgment. Despite widespread suspicion, however, this does not mean that one cannot be wrong about such judgments. Accordingly, this does not mean that one cannot gain higher-order evidence of error and fallibility that bears on the rationality of the aesthetic judgment in question. In this paper, we explain and explore these issues in some detail.
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  10. Toward a general theory of knowledge.Luis M. Augusto - 2020 - Journal of Knowledge Structures and Systems 1 (1):63-97.
    For millennia, knowledge has eluded a precise definition. The industrialization of knowledge (IoK) and the associated proliferation of the so-called knowledge communities in the last few decades caused this state of affairs to deteriorate, namely by creating a trio composed of data, knowledge, and information (DIK) that is not unlike the aporia of the trinity in philosophy. This calls for a general theory of knowledge (ToK) that can work as a foundation for a science of knowledge (SoK) and additionally distinguishes (...)
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  11. Philosophy and Literature in Jorge Luis Borges: ¿Aliados o Enemigos?.José Luis Fernández - 2022 - In Garry L. Hagberg (ed.), Fictional Worlds and Philosophical Reflection. pp. 79-105.
    Are philosophy and literature allies or enemies in Jorge Luis Borges's fictions? In this paper, I argue that Borges can satisfy membership in the allies camp because his fictions provide the imaginative scenarios the allies believe are so necessary to this coalition; however, because his stories question philosophy's hold on reality, they can also seem to fall into the enemies camp by countervailing any claim philosophy has on reality and truth; although, ultimately, the manner in which Borges forges an (...)
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  12. Non-Agential Permissibility In Epistemology.Luis R. G. Oliveira - 2015 - Australasian Journal of Philosophy 93 (2):389-394.
    Paul Silva has recently argued that doxastic justification does not have a basing requirement. An important part of his argument depends on the assumption that doxastic and moral permissibility have a parallel structure. I here reply to Silva's argument by challenging this assumption. I claim that moral permissibility is an agential notion, while doxastic permissibility is not. I then briefly explore the nature of these notions and briefly consider their implications for praise and blame.
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  13. JKSS and Paul Feyerabend.Luis M. Augusto - 2021 - Journal of Knowledge Structures and Systems 2 (1):1-2.
    In this editorial, I explain how Paul Feyerabend's Principle of Proliferation is adopted and adapted as a publication model for the Journal of Knowledge Structures and Systems (JKSS). Critical views on the limitations of both non-dynamic publishing models and government- and industry-based models of research are expressed.
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  14. Categories and foundational ontology: A medieval tutorial.Luis M. Augusto - 2022 - Journal of Knowledge Structures and Systems 3 (1):1-56.
    Foundational ontologies, central constructs in ontological investigations and engineering alike, are based on ontological categories. Firstly proposed by Aristotle as the very ur- elements from which the whole of reality can be derived, they are not easy to identify, let alone partition and/or hierarchize; in particular, the question of their number poses serious challenges. The late medieval philosopher Dietrich of Freiberg wrote around 1286 a tutorial that can help us today with this exceedingly difficult task. In this paper, I discuss (...)
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  15. Bridging mainstream and formal ontology: A causality-based upper ontology in Dietrich of Freiberg.Luis M. Augusto - 2021 - Journal of Knowledge Structures and Systems 2 (2):35.
    Ontologies are some of the most central constructs in today's large plethora of knowledge technologies, namely in the context of the semantic web. As their coinage indicates, they are direct heirs to the ontological investigations in the long Western philosophical tradition, but it is not easy to make bridges between them. Contemporary ontological commitments often take causality as a central aspect for the ur-segregation of entities, especially in scientific upper ontologies; theories of causality and philosophical ontological investigations often go hand-in-hand, (...)
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  16. God and gratuitous evil: Between the rock and the hard place.Luis R. G. Oliveira - 2023 - International Journal for Philosophy of Religion 94 (3):317-345.
    To most of us – believers and non-believers alike – the possibility of a perfect God co-existing with the kinds of evil that we see calls out for explanation. It is unsurprising, therefore, that the belief that God must have justifying reasons for allowing all the evil that we see has been a perennial feature of theistic thought. Recently, however, a growing number of authors have argued that the existence of a perfect God is compatible with the existence of gratuitous (...)
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  17. Suspending judgment the correct way.Luis Rosa - 2023 - Inquiry: An Interdisciplinary Journal of Philosophy 66 (10):2001-2023.
    In this paper I present reasons for us to accept the hypothesis that suspended judgment has correctness conditions, just like beliefs do. Roughly put, the idea is that suspended judgment about p is correct when both p and ¬p might be true in view of certain facts that characterize the subject’s situation. The reasons to accept that hypothesis are broadly theoretical ones: it adds unifying power to our epistemological theories, it delivers good and conservative consequences, and it allows us to (...)
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  18. Entities and their genera: Slicing up the world the medieval way--and does it matter to formal ontology?Luis M. Augusto - 2022 - Journal of Knowledge Structures and Systems 3 (2):4-47.
    Genera, typically hand-in-hand with their branching species, are essential elements of vocabulary-based information constructs, in particular scientific taxonomies. Should they also feature in formal ontologies, the highest of such constructs? I argue in this article that the answer is “Yes” and that the question posed in its title also has a Yes-answer: The way medieval ontologists sliced up the world into genera does matter to formal ontology. More specifically, the way Dietrich of Freiberg, a Latin scholastic, conceived and applied strictly (...)
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  19. O/ontology.Luis M. Augusto - 2022 - Journal of Knowledge Structures and Systems 3 (3):1-2.
    The gulf between philosophical and formal ontology can and should be bridged. In this Editorial, I elaborate briefly on this subject.
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  20. On the kinds of problems tackled by science, technology, and professions. Building foundations of science policy.Luis Marone - 2020 - Mεtascience: Scientific General Discourse 1:79-95.
    Science, technology, and professions form a system with strong interactions. Yet, these activities attack different kinds of problems which require different kinds of solutions. The problems that trigger scientific and technological research remain insufficiently solved or unsolved, therefore their possible solutions must be invented (i. e. they are partially or totally original) and, consequently, they should be tested against reality by researchers before considering them as true or useful. On the contrary, the problems that trigger professional inquiry are already solved, (...)
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  21. What of multi- and interdisciplinarity? A (personal) case study.Luis M. Augusto - 2022 - Journal of Knowledge Structures and Systems 3 (2):1-3.
    An analysis of--yet another--case of academic failure in multi- and interdisciplinarity. An editorial of the Journal of Knowledge Structures & Systems.
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  22. Logical Principles of Agnosticism.Luis Rosa - 2019 - Erkenntnis 84 (6):1263-1283.
    Logic arguably plays a role in the normativity of reasoning. In particular, there are plausible norms of belief/disbelief whose antecedents are constituted by claims about what follows from what. But is logic also relevant to the normativity of agnostic attitudes? The question here is whether logical entailment also puts constraints on what kinds of things one can suspend judgment about. In this paper I address that question and I give a positive answer to it. In particular, I advance two logical (...)
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  23. Rethinking quasispecies theory: From fittest type to cooperative consortia.Luis Villarreal & Guenther Witzany - 2013 - World Journal of Biological Chemistry 4:79-90.
    Recent investigations surprisingly indicate that single RNA "stem-loops" operate solely by chemical laws that act without selective forces, and in contrast, self-ligated consortia of RNA stem-loops operate by biological selection. To understand consortial RNA selection, the concept of single quasi-species and its mutant spectra as drivers of RNA variation and evolution is rethought here. Instead, we evaluate the current RNA world scenario in which consortia of cooperating RNA stem-loops are the basic players. We thus redefine quasispecies as RNA quasispecies consortia (...)
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  24. Knowledge & Logic: Towards a science of knowledge.Luis M. Augusto - manuscript
    Just started a new book. The aim is to establish a science of knowledge in the same way that we have a science of physics or a science of materials. This might appear as an overly ambitious, possibly arrogant, objective, but bear with me. On the day I am beginning to write it–June 7th, 2020–, I think I am in possession of a few things that will help me to achieve this objective. Again, bear with me. My aim is well (...)
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  25. Who's Afraid of Idealism?: Epistemological Idealism From the Kantian and Nietzschean Points of View.Luis M. Augusto - 2005 - University Press of America.
    In Who's Afraid of Idealism? the philosophical concept of idealism, the extent to which reality is mind-made, is examined in new light. Author Luis M. Augusto explores epistemological idealism, at the source of all other kinds of idealism, from the viewpoints of Immanuel Kant and Friedrich Nietzsche, two philosophers who spent a large part of their lives denigrating the very concept. Working from Kant and Nietzsche's viewpoints that idealism was a scandal to philosophy and the cause of nihilism, Augusto (...)
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  26. Justification and the Uniqueness Thesis.Luis Rosa - 2012 - Logos and Episteme (4):571-577.
    In this paper, I offer two counterexamples to the so-called ‘Uniqueness Thesis.’ As one of these examples rely on the thesis that it is possible for a justified belief to be based on an inconsistent body of evidence, I also offer reasons for this further thesis. On the assumption that doxastic justification entails propositional justification, the counterexamples seem to work.
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  27. Coherence and Knowability.Luis Rosa - 2022 - The Philosophical Quarterly 72 (4):960-978.
    Why should we avoid incoherence? An influential view tells us that incoherent combinations of attitudes are such that it is impossible for all of those attitudes to be simultaneously vindicated by the evidence. But it is not clear whether this view successfully explains what is wrong with certain akratic doxastic states. In this paper I flesh out an alternative response to that question, one according to which the problem with incoherent combinations of attitudes is that it is impossible for all (...)
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  28. Logic in knowledge representation and reasoning: Central topics via readings.Luis M. Augusto - manuscript
    Logic has been a—disputed—ingredient in the emergence and development of the now very large field known as knowledge representation and reasoning. In this book (in progress), I select some central topics in this highly fruitful, albeit controversial, association (e.g., non-monotonic reasoning, implicit belief, logical omniscience, closed world assumption), identifying their sources and analyzing/explaining their elaboration in highly influential published work.
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  29. Deontological evidentialism and ought implies can.Luis R. G. Oliveira - 2018 - Philosophical Studies 175 (10):2567-2582.
    Deontological evidentialism is the claim that S ought to form or maintain S’s beliefs in accordance with S’s evidence. A promising argument for this view turns on the premise that consideration c is a normative reason for S to form or maintain a belief that p only if c is evidence that p is true. In this paper, I discuss the surprising relation between a recently influential argument for this key premise and the principle that ought implies can. I argue (...)
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  30. Two-level grammars: Some interesting properties of van Wijngaarden grammars.Luis M. Augusto - 2023 - Omega - Journal of Formal Languages 1:3-34.
    The van Wijngaarden grammars are two-level grammars that present many interesting properties. In the present article I elaborate on six of these properties, to wit, (i) their being constituted by two grammars, (ii) their ability to generate (possibly infinitely many) strict languages and their own metalanguage, (iii) their context-sensitivity, (iv) their high descriptive power, (v) their productivity, or the ability to generate an infinite number of production rules, and (vi) their equivalence with the unrestricted, or Type-0, Chomsky grammars.
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  31. Sceptical Theism and the Paradox of Evil.Luis R. G. Oliveira - 2020 - Australasian Journal of Philosophy 98 (2):319-333.
    Given plausible assumptions about the nature of evidence and undercutting defeat, many believe that the force of the evidential problem of evil depends on sceptical theism’s being false: if evil is...
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  32. The Basic Philosophy Paper: A Structural Guide.Luis Oliveira - manuscript
    This is not a guide for your writing process. You should write in whatever way expressing and making sense of your ideas feels most natural and most productive to you. This is a guide for organizing your ideas, after you have captured some of them in fits and starts of prose, into a particular kind of final product: the basic philosophy paper.
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  33. Languages, machines, and classical computation.Luis M. Augusto - 2021 - London, UK: College Publications.
    3rd ed, 2021. A circumscription of the classical theory of computation building up from the Chomsky hierarchy. With the usual topics in formal language and automata theory.
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  34. Deontological evidentialism, wide-scope, and privileged values.Luis R. G. Oliveira - 2017 - Philosophical Studies 174 (2):485-506.
    Deontological evidentialism is the claim that we ought to form and maintain our beliefs in accordance with our evidence. In this paper, I criticize two arguments in its defense. I begin by discussing Berit Broogard’s use of the distinction between narrow-scope and wide-scope requirements against W.K. Clifford’s moral defense of. I then use this very distinction against a defense of inspired by Stephen Grimm’s more recent claims about the moral source of epistemic normativity. I use this distinction once again to (...)
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  35. Vagueness and the Problem of Evil: a New Reply to van Inwagen.Luis Oliveira - 2021 - Manuscrito: Revista Internacional de Filosofía 44 (4):49-82.
    One of the few points of agreement between most theists and non-theists working on the problem of evil is that the existence of a perfect God is incompatible with the existence of pointless evil. In a series of influential papers, however, Peter van Inwagen has argued that careful attention to the reasoning behind this claim reveals fatal difficulties related to the Sorites Paradox. In this paper, I explain van Inwagen’s appeal to sorites reasoning, distinguish between two different arguments in his (...)
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  36. How should we ascribe the third stance?Luis Rosa - forthcoming - In Alexandra Zinke & Verena Wagner (eds.), Suspension in Epistemology and Beyond. Routledge.
    Epistemologists often describe subjects as being capable of adopting a third kind of categorical doxastic stance regarding whether something is the case, besides belief and disbelief. They deploy a variety of idioms in order to ascribe that stance. In this paper, I flesh out the properties that the third kind of categorical stance is supposed to have and start searching for the best ways to ascribe it. The idioms ‘suspends judgment about whether’ and ‘is agnostic about whether’, among others, are (...)
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  37. Suspension, entailment, and presupposition.Luis Rosa - forthcoming - Erkenntnis:1-17.
    The paper is concerned with the rational requirements for suspended judgment, or what suspending judgment about a question rationally commits one to. It shows that two purported rational requirements for suspended judgment cannot both be true at the same time, at least when the entailment relation between questions is understood a certain way. The first one says that one is rationally required to suspend judgment about those questions that are entailed by the questions that one already suspends judgment about. The (...)
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  38. From symbols to knowledge systems: A. Newell and H. A. Simon's contribution to symbolic AI.Luis M. Augusto - 2021 - Journal of Knowledge Structures and Systems 2 (1):29 - 62.
    A. Newell and H. A. Simon were two of the most influential scientists in the emerging field of artificial intelligence (AI) in the late 1950s through to the early 1990s. This paper reviews their crucial contribution to this field, namely to symbolic AI. This contribution was constituted mostly by their quest for the implementation of general intelligence and (commonsense) knowledge in artificial thinking or reasoning artifacts, a project they shared with many other scientists but that in their case was theoretically (...)
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  39. Ambiguous Statements about Akrasia.Luis Rosa - 2022 - Journal of Philosophy 119 (11):581-601.
    Epistemologists take themselves to disagree about whether there are situations where it is rational for one to believe that p and rational for one to believe that one’s evidence does not support p (rational akrasia). The embedded sentence ‘one’s evidence does not support p’ can be interpreted in two ways, however, depending on what the semantic contribution of ‘one’s evidence’ is taken to be. ‘One’s evidence’ might be seen as a sheer indexical or as a descriptive singular term. The first (...)
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  40. Skeptical Theism: A Panoramic Overview (Part I).Luis R. G. Oliveira - 2023 - Philosophy Compass 18 (10).
    Skeptical theism, broadly construed, is an attempt to leverage our limited cognitive powers, in some specified sense, against “evidential” and “explanatory” arguments from evil. Since there are different versions of these kinds of arguments, there are correspondingly different versions of skeptical theism. In this paper, I briefly explain three versions of these arguments from evil (two from William Rowe and one from Paul Draper) and the three versions of skeptical theism tailor-made to block them (from Stephen Wykstra, Michael Bergmann, and (...)
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  41. Epistemic Consent and Doxastic Justification.Luis Oliveira - 2022 - In Paul Silva & Luis R. G. Oliveira (eds.), Propositional and Doxastic Justification: New Essays on their Nature and Significance. New York: Routledge. pp. 286-312.
    My starting point is what I call the Normative Authority Conception of justification, where S is justified in their belief that p at t (to some degree n) if and only if their believing that p at t is not ruled out by epistemic norms that have normative authority over S at t. With this in mind, this paper develops an account of doxastic justification by first developing an account of the normative authority of epistemic norms. Drawing from work in (...)
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  42. To be or not to be informed, that is the question of O/ontology.Luis M. Augusto - 2022 - Journal of Knowledge Structures and Systems 3 (3):3-49.
    The relations between ontology and information are many and fundamental, and they help us to understand the present gulf between (formal) ontology and (philosophical) Ontology: We can speak of respectively ontology-driven information and information-driven ontology as the focus on being informed vs. informed being. The question of whether these two (can) coincide is relevant to both fields, and in this article I elaborate on what needs to be addressed first of all to provide us with an answer: The form. This (...)
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  43. Ampliative Transmission and Deontological Internalism.Luis R. G. Oliveira - 2018 - Pacific Philosophical Quarterly 99 (2):174-185.
    Deontological internalism is the family of views where justification is a positive deontological appraisal of someone's epistemic agency: S is justified, that is, when S is blameless, praiseworthy, or responsible in believing that p. Brian Weatherson discusses very briefly how a plausible principle of ampliative transmission reveals a worry for versions of deontological internalism formulated in terms of epistemic blame. Weatherson denies, however, that similar principles reveal similar worries for other versions. I disagree. In this article, I argue that plausible (...)
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  44. Formal logic: Classical problems and proofs.Luis M. Augusto - 2019 - London, UK: College Publications.
    Not focusing on the history of classical logic, this book provides discussions and quotes central passages on its origins and development, namely from a philosophical perspective. Not being a book in mathematical logic, it takes formal logic from an essentially mathematical perspective. Biased towards a computational approach, with SAT and VAL as its backbone, this is an introduction to logic that covers essential aspects of the three branches of logic, to wit, philosophical, mathematical, and computational.
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  45.  61
    Deductive Computing over Knowledge Bases: Prolog and Datalog.Luis M. Augusto - 2024 - Journal of Knowledge Structures and Systems 5 (1):1-62.
    Knowledge representation (KR) is actually more than representation: It involves also inference, namely inference of “new” knowledge, i.e. new facts. Logic programming is a suitable KR medium, but more often than not discussions on this programming paradigm focus on aspects other than KR. In this paper, I elaborate on the general theory of logic programming and give the essentials of two of its main implementations, to wit, Prolog and Datalog, from the viewpoint of deductive computing over knowledge bases, which includes (...)
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  46. Rossian totalism about intrinsic value.Luis R. G. Oliveira - 2016 - Philosophical Studies 173 (8):2069-2086.
    This paper defends a novel account of how to determine the intrinsic value of possible worlds. Section 1 argues that a highly intuitive and widely accepted account leads to undesirable consequences. Section 2 takes the first of two steps towards a novel account by clarifying and defending a view about value-contribution that is based on some of W. D. Ross’ claims about the value of pleasure. Section 3 takes the second step by clarifying and defending a view about value-suppression that (...)
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  47. Twisted ways to speak our minds, or ways to speak our twisted minds?Luis Rosa - forthcoming - In Waldomiro Silva Filho (ed.), Epistemology of Conversation: First essays. Cham: Springer.
    There are many ways in which a speaker can confuse their audience. In this paper, I will focus on one such way, namely, a way of talking that seems to manifest a cross-level kind of cognitive dissonance on the part of the speaker. The goal of the paper is to explain why such ways of talking sound so twisted. The explanation is two-pronged, since their twisted nature may come either from the very mental states that the speaker thereby makes manifest, (...)
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  48. Skeptical Theism: A Panoramic Overview (Part II).Luis R. G. Oliveira - 2023 - Philosophy Compass 18 (10):e12946.
    Skeptical theism, broadly construed, is an attempt to leverage our limited cognitive powers, in some specified sense, against “evidential” and “explanatory” arguments from evil. Since there are different versions of these kinds of arguments, there are correspondingly different versions of skeptical theism. In this paper, I consider four challenges to three central versions of skeptical theism: (a) the problem of generalized skepticism, (b) the problem of moral skepticism, (c) the problem of unqualified modal skepticism, and (d) the challenge from Bayesian (...)
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  49. The van Wijngaarden grammars: A syntax primer with decidable restrictions.Luis M. Augusto - 2023 - Journal of Knowledge Structures and Systems 4 (2):1-39.
    Expressiveness and decidability are two core aspects of programming languages that should be thoroughly known by those who use them; this includes knowledge of their metalanguages a.k.a. formal grammars. The van Wijngaarden grammars (WGs) are capable of generating all the languages in the Chomsky hierarchy and beyond; this makes them a relevant tool in the design of (more) expressive programming languages. But this expressiveness comes at a very high cost: The syntax of WGs is extremely complex and the decision problem (...)
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  50.  99
    Notes from a course introducing logarithms.Luis Antonio Freire - manuscript
    Notes from a quick course of 4 weeks, emphasizing the importance of proofs in an introductory course on logarithm, for high school students.
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