Due to the difficulty in solving combinatorial optimization problems, it is necessary to improve the performance of the algorithms by improving techniques to deal with complex optimizations. This research addresses the metaheuristics of marriage in honey-bees optimization based on the behavior of bees. The current study proposes a technique for solving combinatorial optimization problems within proper computation times. The purpose of this study focuses on the travelling salesperson problem and the application of chaotic methods in important sections of the MBO (...) metaheuristic. Three experiments were conducted to measure the efficiency and quality of the solutions: MBO with chaos to generate initial solutions ; MBO with chaos in the workers ; and MBO with chaos to generate initial solutions and the workers. The application of chaotic functions in MBO was significantly better at solving the travelling salesperson problem. (shrink)

Theory change is a central concern in contemporary epistemology and philosophy of science. In this paper, we investigate the relationships between two ongoing research programs providing formal treatments of theory change: the (post-Popperian) approach to verisimilitude and the AGM theory of belief change. We show that appropriately construed accounts emerging from those two lines of epistemological research do yield convergences relative to a specified kind of theories, here labeled “conjunctive”. In this domain, a set of plausible conditions are identified which (...) demonstrably capture the verisimilitudinarian effectiveness of AGM belief change, i.e., its effectiveness in tracking truth approximation. We conclude by indicating some further developments and open issues arising from our results. (shrink)

This textbook presents the basics of philosophy that are necessary for the student and researcher in science in order to better understand scientific work. The approach is not historical but formative: tools for semantical analysis, ontology of science, epistemology, and scientific ethics are presented in a formal and direct way. The book has two parts: one with the general theory and a second part with application to some problems such as the interpretation of quantum mechanics, the nature of mathematics, and (...) the ontology of spacetime. The book addresses questions such as "What is meaning?", "What is truth?", "What are truth criteria in science?", "What is a theory?", "What is a model?" "What is a datum?", "What is information?", "What does it mean to understand something?", "What is space?", "What is time?", "How are these concepts articulated in science?" "What are values?" "What are the limits of science?", and many more. The philosophical views presented are "scientific" in the sense that they are informed by current science, they are relevant for scientific research, and the method adopted uses the hypothetical-deductive approach that is characteristic of science. The results and conclusions, as any scientific conclusion, are open to revision in the light of future advances. Hence, this philosophical approach opposes to dogmatic philosophy. Supported by end-of-chapter summaries and a list of special symbols used, the material will be of interest for students and researchers in both science and philosophy. The second part will appeal to physicists and mathematicians. (shrink)

In recent years, Cesar Chavez’s life and legacy have been subjected to increased scrutiny. The ensuing reevaluations of Chavez, wittingly or not, are matters of ethical, as well as historical and biographical, concern. This article has two aims. First, it reconstructs Chavez’s account of exemplarity and uses it to assess his legacy. Second, it provides an account of exemplarity situated within social practices. As I argue, exemplarity operates through social practices, rather than mystically as posited by a contagion model. The (...) end result is an ethically nuanced reassessment of Chavez and an account of exemplarity that includes its social dimension. (shrink)

I present a discussion of some issues in the ontology of spacetime. After a characterisation of the controversies among relationists, substantivalists, eternalists, and presentists, I offer a new argument for rejecting presentism, the doctrine that only present objects exist. Then, I outline and defend a form of spacetime realism that I call event substantivalism. I propose an ontological theory for the emergence of spacetime from more basic entities. Finally, I argue that a relational theory of pre-geometric entities can give rise (...) to substantival spacetime in such a way that relationism and substantivalism are not necessarily opposed positions, but rather complementary. In an appendix I give axiomatic formulations of my ontological views. (shrink)

Die vorliegende Arbeit thematisiert eine sowohl im deutschen als auch im spanischen und englischen Sprachraum weitgehend unbekannte philosophische Kontroverse zweier herausragender Figuren der Rezeptionsgeschichte von Husserls Phänomenologie in Mexiko zur Zeit des spanischen republikanischen Exils. Es handelt sich um die Diskussion zwischen José Gaos und Luis Villoro über den phänomenologischen Begriff der Lebenswelt. Im ersten Teil meiner Darstellung werde ich den akademischen Kontext dieser Diskussion erörtern. Im zweiten Teil gehe ich auf die Hauptthese eines Vortrags ein, den Gaos 1963 in (...) Mexiko-Stadt vor einem internationalen Publikum hielt und der als die erste dokumentierte Behandlung des Lebensweltbegriffs in der spanischsprachigen Philosophie gilt. Der dritte Teil behandelt Villoros Erwiderung auf Gaos’ Vortrag und die sich daraus ergebende Auseinandersetzung der beiden Philosophen. Im vierten Teil ziehe ich eine kritische Bilanz des Inhalts dieser Diskussion im Licht des aktuellen Stands der Husserlforschung. Dabei, und schließlich auch im fünften Teil, wird sich die unverkennbar radikale Bedeutung dieser Diskussion für die aktuelle phänomenologische Forschung herausstellen, insbesondere im Hinblick auf das Forschungsdesiderat einer Erklärung der systematischen Verhältnisse zwischen transzendentaler Erkenntniskritik und Lebenswelttheorie. (shrink)

Este trabajo examina el proyecto de investigación de los Archivos Husserl de Lovaina “‘Functionaries of Humanity’: Phenomenology, the UNESCO, and the Problem of Universalism in Science and Culture”. Se trata de un proyecto de reconstrucción histórico-filosófica de las relaciones entre el trabajo temprano de la UNESCO (especialmente en lo relativo a su lucha por la fundación de un humanismo universal tras el fin de la Segunda Guerra Mundial) y la fenomenología de Husserl. El texto presente pone especial énfasis, además, en (...) el rol que juega el exilio republicano del 39 en la historia de esas relaciones. La exposición que sigue está basada en material de archivo inédito y en el esquema general del proyecto; su objetivo es dar a conocer dicho proyecto en el mundo de habla hispana; su conclusión teórica es que hay una relación esencial, materializada históricamente como vínculo institucional, entre la filosofía de Husserl y los intereses culturales de la UNESCO. (shrink)

A supertask consists in the performance of an infinite number of actions in a finite time. I show that any attempt to carry out a supertask will produce a divergence of the curvature of spacetime, resulting in the formation of a black hole. I maintain that supertaks, contrarily to a popular view among philosophers, are physically impossible. Supertasks, literally, collapse under their own weight.

I argue for a four dimensional, non-dynamical view of space-time, where becoming is not an intrinsic property of reality. This view has many features in common with the Parmenidean conception of the universe. I discuss some recent objections to this position and I offer a comparison of the Parmenidean space-time with an interpretation of Heraclitus’ thought that presents no major antagonism.

Black holes are extremely relativistic objects. Physical processes around them occur in a regime where the gravitational field is extremely intense. Under such conditions, our representations of space, time, gravity, and thermodynamics are pushed to their limits. In such a situation philosophical issues naturally arise. In this chapter I review some philosophical questions related to black holes. In particular, the relevance of black holes for the metaphysical dispute between presentists and eternalists, the origin of the second law of thermadynamics and (...) its relation to black holes, the problem of information, black holes and hypercomputing, the nature of determinsim, and the breakdown of predictability in black hole space-times. I maintain that black hole physics can be used to illuminate some important problems in the border between science and philosophy, either epistemology and ontology. (shrink)

RESUMEN El presente articulo procura dar cuenta del problema de la formación de conceptos en Ser y tiempo a partir de la contramovilidad que asume la filosofia respecto de las tendencias auto-supresivas de la vida cotidiana. En un primer momento se distinguen algunos niveles, tendencias y direcciones involucrados en los procesos de formación de conceptos de las ciencias y de la filosofia desde la estela de Ser y tiempo. En un segundo momento se deslindan algunas operaciones categoriales inmanentes a la (...) formación de conceptos a partir del despliegue de lo que Heidegger denomina el acto fundamental de la objetivación, identificable con la tematización y con las direcciones en la que ésta se ejecuta. En un tercer momento, y a modo de cierre, se intenta echar luz sobre la peculiar actitud fundamental de la filosofia para mostrar que ésta se caracteriza, en contra de la Grundhaltung de las ciencias, por lo que podemos denominar con Heidegger una contra-tendencia respecto de la actitud natural-cotidiana. ____________________________________________________________________________________________________ ____ -/- ABSTRACT This article accounts for the different levels, tendencies, and directions involved in theprocess of concept-formation that is proper to both sciences and philosophy in Being and Time. It distinguishes different immanent categorial operations that belong tothe concept formation from the perspective of the unfolding of the fundamental act of objectivation. The article shows, additionally, that Heidegger identifies this Grundakt with thematization and with the concrete directions within which thisact is executed. The paper clarifies, finally,what it is the Grundhaltung of philosophy in order to show that its fundamental attitude is characterized by a Gegenbewegung or Gegenzug. (shrink)

Em um dos vários encontros mundiais sobre a obra do filósofo tcheco-brasileiro Vilém Flusser, os autores deste livro decidem escrever juntos uma introdução a seu pensamento que ao mesmo tempo homenageie o pensador. Nasce daí 'Vilém Flusser - uma.

This paper discusses the logical space of alternative conceptual engineering projects, with a specific focus on (1) the processes, (2) the targets and goals, and (3) the methods of such projects. We present an overview of how these three aspects interact in the contemporary literature and discuss those alternative projects that have yet to be explored based on our suggested typology. We show how choices about each element in a conceptual engineering project constrain the possibilities for the others, thereby giving (...) rise to distinct groupings of possible projects under the banner of conceptual engineering. We conclude with a critical reflection on the potential ethical issues that arise as a result of effectively putting conceptual engineering into practice. (shrink)

En este artículo se presenta una caracterización del concepto de falacia, con énfasis en la llamada ‘falacia de apelación a lo natural’. Se explica el alcance de esta falacia, y su peligrosidad, en particular en el ámbito de las ciencias de la salud y de alimentos.

--Os quarto imperios.--O imperio de Carneiro.--O Imperio daLôba.--O imperio do Capricornio.--O imperio do Cordeiro.

This article provides a theoretical framework to help us understand the controversies between the federalist and anti-federalists in the early history of the United States of America during the Federal Convention in 1787 as a conflict of two political philosophical traditions. The sources of these opposed traditions may be traced back to the disputes in ancient Greek philosophy, in thinkers such as Plato and Aristotle who defined politics in different ways. Plato grounds his definition of politics in epistêmê, which means (...) that society should be ruled by the wisest. The federalist argued the best form of government is one where the people could avoid decision-making and leave the wisest representatives to handle politics. In opposition to this, Aristotle believes that politics should be inspired by the notion of phrônesis, which means that decisions should be considered collectively. Similarly, the anti-federalist believed that the government tends to be corrupted, and citizens should be suspicious of the government. They believed the ideal way to govern society is to have everyone involved in decision-making. (shrink)