En el artículo se reconstruye la teoría perspectivista de G.W. Leibniz. En un primer momento, se analiza el sentido epistemológico del perspectivismo leibniziano. La teoría de la claridad-oscuridad cognitiva permite, en ese momento inicial, caracterizar la particularidad perceptiva como una perspectiva del universo. Se utilizan los escritos de Leibniz sobre ciencia perspectiva, recientemente transcritos, para analizar los sentidos de los conceptos, procedentes de dicha ciencia, que el pensador alemán usa para explicar el acto cognitivo. La explicación perspectivista de la cognición (...) da lugar a una concepción inmanente de la percepción: la perspectiva sustancial es el resultado de la relación entre la fuerza de representación y el universo. Se analiza, entonces, cómo el concepto de punto de vista permite describir la función cognitiva de mediación que el cuerpo desempeña entre la fuerza de representación y el universo. Esta explicación perspectivista de la particularidad perceptiva es, al mismo tiempo, una defensa de la pluralidad metafísica del universo. (shrink)

In this paper we provide a simplified, possibilistic semantics for the logics K45, i.e. a many-valued counterpart of the classical modal logic K45 over the [0, 1]-valued Gödel fuzzy logic \. More precisely, we characterize K45 as the set of valid formulae of the class of possibilistic Gödel frames \, where W is a non-empty set of worlds and \ is a possibility distribution on W. We provide decidability results as well. Moreover, we show that all the results also apply (...) to the extension of K45 with the axiom, provided that we restrict ourselves to normalised Gödel Kripke frames, i.e. frames \ where \ satisfies the normalisation condition \ = 1\). (shrink)

Este artículo es una revisión de la capacidad de los herbarios fotográficos para establecer posibles alianzas experimentales con potencial para ayudar en la concienciación y resolución de la crisis de biodiversidad vegetal. Se analiza cómo el medio fotográfico, bajo el prisma de la creación artística, puede erigirse como un sistema revelador, capaz de superar la mera descripción y ampliar las limitaciones cognitivas de nuestra percepción visual, desvelando la complejidad del universo botánico mediante una mirada más profunda y poética de su (...) naturaleza física. (shrink)

In this paper we consider the modal logic with both \ and \ arising from Kripke models with a crisp accessibility and whose propositions are valued over the standard Gödel algebra \. We provide an axiomatic system extending the one from Caicedo and Rodriguez :37–55, 2015) for models with a valued accessibility with Dunn axiom from positive modal logics, and show it is strongly complete with respect to the intended semantics. The axiomatizations of the most usual frame restrictions are given (...) too. We also prove that in the studied logic it is not possible to get \ as an abbreviation of \, nor vice-versa, showing that indeed the axiomatic system we present does not coincide with any of the mono-modal fragments previously axiomatized in the literature. (shrink)

This paper aims to make a proposal to govern the Peruvian State under the umbrella of management cybernetics, following the paths of the viable system model, proposed by Prof. Stafford Beer, enriched with other soft and hard systemic methodologies and technologies, to cover the soft and hard issues that are part of the complex Peruvian reality at different levels of recursion. For doing this, four defined perspectives were adopted to understand the complexity of Peru: the sectoral view, the regions view, (...) the river basins view and the macroregions view. Peru is seen as a system in focus, defining, for each of these four perspectives, the five systems that VSM has. The application of the VSM in each perspective serves to apply it in two modes: diagnosis and design, according to the respective perspective. Then an integrative analysis and reflection is done considering the four perspectives, to analyze the viability of the VSM approach in the governance of the Peruvian State to establish some conclusions and recommendations in relation to the proposal, appearing at the end of the paper. (shrink)

The use of wireless sensor networks and the Internet of things to detect forest fire outbreaks may help to reduce the response time and avoid natural disasters. This work proposes the deployment of WSN to enhance the real-time monitoring of dynamic variables such as polluting gases, temperature or the presence of fire flames by infrared. In addition, the activation of forest fire alerts if environmental status may involve evidence of a recent fire outbreak. A fuzzy-based controller is implemented to manage (...) the uncertainty related to estimating forest fire occurrence and dynamic update of fuzzy sets is developed to distinguish usual and unusual environmental conditions of every monitored forest area. Merkle trees, AES and hash functions are considered to protect the integrity of environmental data. (shrink)

We prove strong completeness of the □-version and the ◊-version of a Gödel modal logic based on Kripke models where propositions at each world and the accessibility relation are both infinitely valued in the standard Gödel algebra [0,1]. Some asymmetries are revealed: validity in the first logic is reducible to the class of frames having two-valued accessibility relation and this logic does not enjoy the finite model property, while validity in the second logic requires truly fuzzy accessibility relations and this (...) logic has the finite model property. Analogues of the classical modal systems D, T, S4 and S5 are considered also, and the completeness results are extended to languages enriched with a discrete well ordered set of truth constants. (shrink)

In 2015 Dag Prawitz proposed an Ecumenical system where classical and intuitionistic logic could coexist in peace. The classical logician and the intuitionistic logician would share the universal quantifier, conjunction, negation and the constant for the absurd, but they would each have their own existential quantifier, disjunction and implication, with different meanings. Prawitz’ main idea is that these different meanings are given by a semantical framework that can be accepted by both parties. The aim of the present paper is [1] (...) to prove the normalization theorem for the propositional fragment NEp of Prawitz’ ecumenical system, and [2] to show that NEp is sound and complete with respect to a Kripke-style semantics for the language of NEp. (shrink)

In this article we will argue that given certain conditions for the evolution of bi- ological controllers, these will necessarily evolve in the direction of incorporating consciousness capabilities. We will also see what are the necessary mechanics for the provision of these capabilities and extrapolate this vision to the world of artifi- cial systems postulating seven design principles for conscious systems. This article was published in the journal Neural Networks special issue on brain and conscious- ness.

Semi-contraction is a withdrawal operation defined by Fermé in "On the logic of theory change: Contraction without recovery." In this paper we propose: (1) an axiomatic characterization of semi-contraction; (2) an alternative construction for semi-contraction based on semi-saturatable sets, inspired by Levi's saturatable sets; (3) a special kind of semi-contraction that satisfies the Lindström and Rabinowicz interpolation thesis.

Alchourrón devoted his last years to the analysis of the notion of defeasible conditionalization. He developed a formal system capturing the essentials of this notion. His definition of the defeasible conditional is given in terms of strict implication operator and a modal operator f which is interpreted as a revision function at the language level. In this paper, we will point out that this underlying revision function is more general than the well known AGM revision [4]. In addition, we will (...) give a complete characterization of that more general kind of revision and will show how permits to unify models of revision given by other authors. Alchourrón dedicó sus últimos años al análisis de la noción de condicionalización derrotable. Desarrolló un sistema formal que captura los aspectos esenciales de esta noción. Su definición de condicional revisable está dada en términos del operador de implicación estricta y un operador modal f el cual es interpretado en el nivel del lenguaje como una función de revisión. En este trabajo señalamos que la función de revisión subyacente es más general que la bien conocida función de revisión de AGM. Además, presentaremos una caracterización completa de una clase de revisión más general y mostraremos cómo nuestro modelo permite unificar los modelos de revisión propuestos por otros autores. (shrink)

Automatic public malware analysis services provide controlled, isolated and virtual environments to analyse malicious software samples. Unfortunately, malware is currently incorporating techniques to recognize execution onto a virtual or sandbox environment; when an analysis environment is detected, malware behaves as a benign application or even shows no activity. In this work, we present an empirical study and characterization of automatic PMAS, considering 26 different services. We also show a set of features that allow to easily fingerprint these services as analysis (...) environments; the lower the unlikeability of these features, the easier for us to fingerprint the analysis service they belong to. Finally, we propose a method for these analysis services to counter or at least mitigate our proposal. (shrink)

Las investigaciones que Carlos Alchourrón desarrolló en la Filosofía del Derecho se vincularon, desde inicios de la década de 1980, con problemáticas críticas de la Inteligencia Artificial. Su contribución a la construcción de una lógica de las normas se conectó rápidamente con la deducción automática y los Sistemas Expertos Jurídicos. Su preocupación por la cuestión de los conflictos de obligaciones que pueden plantearse en un sistema normativo cuando el juez se enfrenta a la necesidad de emitir un veredicto considerando ciertos (...) hechos, se vinculó, en sus trabajos, con la noción más general de "condicionales derrotables" y con la formalización del Razonamiento No Monótono. Pero su contribución de mayor impacto fue aquella derivada de la búsqueda de una solución al problema de los resultados múltiples que surgen de la derogación de una norma en un sistema jurídico, problema que puede ser visto, en un contexto epistémico, como el de la contracción de un conjunto de creencias. Su enfoque constructivo, que desarrolló con David Makinson, convergió con el axiomático elaborado por Peter Gärdenfors, dando lugar al surgimiento de la teoría de los Cambios Racionales de Creencias, más conocida como AGM, teoría que fue adoptada en IA como un modelo standard para la especificación de las actualizaciones de Bases de Conocimiento, operaciones que, habitualmente, involucran la introducción de una nueva creencia que puede ser inconsistente con las anteriores. ¿Por qué AGM adquirió rápidamente carta de ciudadanía en IA, al punto de que su influencia, medida según la cantidad de menciones bibliográficas del artículo fundacional de 1985, se ha duplicado en la última década? Mostraremos en este trabajo que la teoría apareció en un momento de crisis de la IA y que el alto nivel de abstracción del modelo de AGM era lo que muchos investigadores de la disciplina estaban buscando. El presente artículo, luego de describir la génesis de AGM, realiza un análisis histórico de las circunstancias en las cuales la teoría se introdujo en la IA y una evaluación cuantitativa y cualitativa de su impacto en dicha disciplina. The main lines of research that Carlos Alchourrón developed in the Philosophy of Law, were connected, from the beginnings of the 80' s, to some critical problems in the Artificial Intelligence. His contributions to the construction of a logic of norms were rapidly linked to automatic deduction and the Legal Expert Systems. His concerns for the conflict of obligations that could arise in a normative system when a judge has to issue a ruling taking some particular facts into account were associated in his work with the more general notion of "defeasible conditionals" and with the formalization of Non Monotonic Reasoning. But his most relevant contribution was the one derived from the search of a solution to the problem of multiple outcomes resulting from the derogation of a norm in a legal corpus, which may be considered -within an epistemic framework- analogous to the contraction of a set of beliefs. The constructive approach he worked out with David Makinson converged with Peter Gärdenfors' axiomatic, giving rise to the formulation of the theory of Rational Changes of Belief, which was adopted in AI as a model for the specification of the updates of Knowledge Bases as it usually involves a new belief that may be inconsistent with the old ones. (shrink)

RESUMEN El presente trabajo de revisión expone cómo las prácticas de gestión en la anestesiología deben ser modificadas para encarar las cambiantes necesidades de pacientes, otros profesionales y sistemas sanitarios, a fin de mantener una función significativa en la atención sanitaria. Los servicios de anestesia han adoptado una amplia variedad de modelos para hacer frente a las necesidades del medio local, la relación entre los anestesiólogos y la comunidad, y los papeles desempeñados por los anestesiólogos en el tratamiento perioperatorio. El (...) sistema sanitario cubano se encuentra inmerso en un proceso de permanente adecuación de sus servicios a los problemas, demandas y necesidades de la población cubana y sus determinantes. Por ello, objetivo es exponer consideraciones teóricas en función del perfeccionamiento del servicio de Anestesiología y Reanimación. ABSTRACT This review paper presents how anesthesiology management practices must be modified in order to deal with the changing needs patients, other professionals and health systems have, in order to maintain a significant function in health care. Anesthesiology services have adopted a wide variety of models to face up to the needs the city, the relationship between anesthesiologists and the community and the role anesthesiologists play in perioperative treatment have. The Cuban health system services are in a process of permanent adaptation to the problems, demands and needs the Cuban population and its determinants have. For that reason, this paper aims at presenting theoretical considerations towards the improvement of the Anesthesiology and Resuscitation service. (shrink)

Tradición patrimonial y administración señorial en la América Latina Aspectos básicos del liberalismo brasileño del siglo XIX - El pensamiento conservador en Colombia, a lo largo del siglo XIX - El pensamiento conservador en Colombia, a lo largo del siglo XX - Iberoamérica como totalidad - Clientelismo mesianismo y liberación en la cultura Latinoamericana - Catequesis misionera y "saber de salvación" en el Brasil colonial - La filosofía brasileña en los siglos XVII, XVIII y XIX - La filosofía brasileña en (...) el siglo XX - Positivismo y realidad Latinoamericana - Cinco concepciones de la integración Latinoamericana - Etica y política en la cultura brasileña - Catolicismo y modernidad : la función moralizadora de la iglesia. (shrink)

Parental burnout is a unique and context-specific syndrome resulting from a chronic imbalance of risks over resources in the parenting domain. The current research aims to evaluate the psychometric properties of the Spanish version of the Parental Burnout Assessment across Spanish-speaking countries with two consecutive studies. In Study 1, we analyzed the data through a bifactor model within an Exploratory Structural Equation Modeling on the pooled sample of participants obtaining good fit indices. We then attained measurement invariance across both gender (...) and countries in a set of nested models with gradually increasing parameter constraints. Latent means comparisons across countries showed that among the participants’ countries, Chile had the highest parental burnout score, likewise, comparisons across gender evidenced that mothers displayed higher scores than fathers, as shown in previous studies. Reliability coefficients were high. In Study 2, we tested the relations between parental burnout and three specific consequences, i.e., escape and suicidal ideations, parental neglect, and parental violence toward one’s children. The medium to large associations found provided support for the PBA’s predictive validity. Overall, we concluded that the Spanish version of the PBA has good psychometric properties. The results support its relevance for the assessment of parental burnout among Spanish-speaking parents, offering new opportunities for cross-cultural research in the parenting domain. (shrink)

Huge losses and serious threats to ecosystems are common consequences of forest fires. This work describes a forest fire controller based on fuzzy logic and decision-making methods aiming at enhancing forest fire prevention, detection, and fighting systems. In the proposal, the environmental monitoring of several dynamic risk factors is performed with wireless sensor networks and analysed with the proposed fuzzy-based controller. With respect to this, meteorological variables, polluting gases and the oxygen level are measured in real time to estimate the (...) existence of forest fire risks in the short-term and to detect the recent occurrence of fire outbreaks over different forest areas. Besides, the Analytic Hierarchy Process method is used to determine the level of fire spread, and, when necessary, environmental alerts are sent by a Web service and received by a mobile application. For this purpose, integrity, confidentiality, and authenticity of environmental information and alerts are protected with implementations of Lamport’s authentication scheme, Diffie-Lamport signature, and AES-CBC block cipher. (shrink)

Fregeans follow Frege in accepting informativeness and substitution failure as reliable criteria for the existence of senses as objects of thought. In this paper I show that if we accept this, we must also accept the existence of an infinite hierarchy of senses as objects of thought. This is a bad result since it turns Fregeanism into a doctrine according to which object-related thoughts either have an infinite number of objects as contents or none at all. This shows, against the (...) Fregean, that senses cannot themselves be constituents of thought. Los fregeanos aceptan, siguiendo a Frege, que los criterios de informatividad y falla de sustitución son guías confiables de la existencia de sentidos como objetos del pensamiento. En este artículo muestro que si aceptamos esta tesis también debemos aceptar la existencia de una jerarquía infinita de sentidos como objetos del pensamiento. Esta es una mala consecuencia pues convierte al fregeanismo en una doctrina según la cual los pensamientos dirigidos a objetos o bien tienen un número infinito de objetos como contenido o ninguno. Esto muestra, contra los fregeanos, que los sentidos no pueden ellos mismos ser objeto del pensamiento. (shrink)

Se sostiene que la propuesta de Rodriguez-Pereyra de que los analíticos iberoamericanos publiquemos todos nuestras investigaciones en inglés es inviable e indeseable.

Seventeen essays make up the body of this anthology. Most of the authors are Latin Americans (although some of them work in other regions), and thus we might say that this volume is, in a very approximate sense, a showcase of recent Latin-American ontology and metaphysics. The remaining authors—Pierre Aubenque, Barry Smith, Lorenzo Peña and James Hamilton—are distinguished teachers who have had important contacts with the Latin-American philosophical community. The articles in this anthology address some of the central questions in (...) ontology and metaphysics: the possibility of a science of being (Aubenque), the different possible approaches to ontology (Hurtado), the recent application of ontology to informatics (Smith), guise theory and its Leibnizian antecedents (Herrera), the reduction of space and time to phenomenological properties (Rodríguez Larreta), the Newtonian ontology of space and time (Benítez and Robles), the relation between truth and the so-called “truth-makers” (Rodríguez Pereyra), the ontological position of the Pyrrhonic skeptic (Junqueira Smith), the limits and difficulties of metaphysical realism (Cabanchik, Pereda), the defense of physicalist or emergentist positions regarding the mental (Pérez), the metaphysical nature of persons (Naishtat), the ontology of cultural entities (Peña), political ontology (Nudler), the relation between ontology and literature (Hamilton), the ontology of art (Tomasini). Some of the works (e.g., those Aubenque and Robles) approach the question from a historical perspective: others examine the most recent philosophical literature on the problems focalized (e.g., those by Pérez and Rodríguez Pereyra), and others offer new approaches (e.g., those of Rodríguez Larreta, Peña or Nudler) to a specific problematic area. (shrink)

In his 1676 text De Quadratura Arithmetica, Leibniz distinguished infinita terminata from infinita interminata. The text also deals with the notion, originating with Desargues, of the point of intersection at infinite distance for parallel lines. We examine contrasting interpretations of these notions in the context of Leibniz’s analysis of asymptotes for logarithmic curves and hyperbolas. We point out difficulties that arise due to conflating these notions of infinity. As noted by Rodríguez Hurtado et al., a significant difference exists between (...) the Cartesian model of magnitudes and Leibniz’s search for a qualitative model for studying perspective, including ideal points at infinity. We show how respecting the distinction between these notions enables a consistent interpretation thereof. (shrink)

This original article outlines a theoretical path and posterior critical analysis regarding two relevant matters in modern nursing: patterns of knowing in nursing and commodification contexts in contemporary health systems. The aim of our manuscript is to examine the development of basic and contextual nursing knowledge in commodified contexts. For this purpose, we outline a discussion and reflexive dialogue based on a literature search and our clinical experience. To lay the foundation for an informed discussion, we conducted a literature search (...) and selected relevant articles in English, Spanish, and Portuguese that included contents on patterns of knowing, commodification, and nursing published from 1978 to 2017. Globalization, commodification, and austerity measures seem to have negative effects on nursing. Work conditions are worsening, deteriorating nurse–patient relationships, and limiting reflection on practice. Nurses must develop knowledge to challenge and participate in institutional organization and public health policies. Development of nursing knowledge may be difficult to achieve in commodified environments. Consequently, therapeutic care relationships, healthcare services, and nurses' own health are compromised. However, by obtaining organizational, sociopolitical, and emancipatory knowledge, nurses can use strategies to adapt to or resist commodified contexts while constructing basic knowledge. (shrink)