Information Retrieval systems benefit from the use of long queries containing a large volume of search-relevant information. This situation is not common, as users of such systems tend to use very short and precise queries with few keywords. In this work we propose a modification of the Latent Dirichlet Allocation (LDA) technique using data from the document collection and its vocabulary for a better representation of short queries. Additionally, a study is carried out on how the modification of the proposed (...) LDA weighted vectors increase the performance using relevant documents as feedback. The work shown in this paper is tested using three biomedical corpora (TREC Genomics 2004, TREC Genomics 2005 and OHSUMED) and one legal corpus (FIRE 2017). Results prove that the application of the proposed representation technique, as well as the feedback adjustment, clearly outperforms the baseline methods (BM25 and non-modified LDA). (shrink)

Accurate measurement of livestock weight is a primary indicator in the meat industry to increase the economic gain. In lambs, the weight of a live animal is still usually estimated manually using traditional scales, resulting in a tedious process for the experienced assessor and stressful for the animal. In this paper, we propose a solution to this problem using computer vision techniques; thus, the proposed procedure estimates the weight of a lamb by analysing its zenithal image without interacting with the (...) animal, which speeds up the process and reduces weighing costs. It is based on a data-driven decision support system that uses RGB-D machine vision techniques and regression models. Unlike existing methods, it does not require walk-over-weighing platforms or special and expensive infrastructures. The proposed method includes a decision support system that automatically rejects those images that are not appropriate to estimate the lamb weight. After determining the body contour of the lamb, we compute several features that feed different regression models. Best results were achieved with Extra Tree Regression ($R^{2}$=91.94%), outperforming the existing techniques. Using only an image, the proposed approach can identify with a minimum error the optimal weight of a lamb to be slaughtered, so as to maximise the economic profit. (shrink)

En este trabajo se estudia la concepción de la filosofía y el método de la exageración propuesto por Günther Anders en su obra en dos volúmenes La obsolescencia del hombre (1956-1980). Si temáticamente el centro de la obra es la preocupación por la posible autodestrucción de la humanidad en la época atómica; Anders también propone una comprensión de la filosofía y de su método como correlato operatorio de dicha posible aniquilación. Esta revisión de la filosofía y su método constituyen la (...) justificación del tratamiento filosófico de la posibilidad de la autodestrucción de la humanidad. (shrink)

En este trabajo el autor rastrea la influencia de Aristóteles en Vico, especialmente en el plano de la ética y en el de la política, donde la felicidad de la comunidad se realiza a través de la amistad de los individuos.In this work the author seeks the influence of Aristotle in Vico, particularly in the field of ethics and politics, where happiness of the community is achieved through friendship among individuals.

One of the essential distinctions in action theory is that between activity and passivity. I address this distinction in this article.

False “Aha!” moments can be elicited experimentally using the False Insight Anagram Task (FIAT), which combines semantic priming and visual similarity manipulations to lead participants into having “Aha!” moments for incorrect anagram solutions. In a preregistered experiment (N = 255), we tested whether warning participants and explaining to them exactly how they were being deceived, would reduce their susceptibility to false insights. We found that simple warnings did not reduce the incidence of false insights. On the other hand, participants who (...) were given a detailed explanation of the methods used to deceive them experienced a small reduction in false insights compared to participants given no warning at all. Our findings suggest that the FIAT elicits a robust false insight effect that is hard to overcome, demonstrating the persuasive nature of false insights when the conditions are ripe for them. (shrink)

The potential to achieve dynamic, scalable and cost-effective marketplaces and eCommerce solutions has driven recent research efforts towards so-called Semantic Web Services that are enriching Web services with machine-processable semantics. To this end, the Web Service Modeling Ontology (WSMO) provides the conceptual underpinning and a formal language for semantically describing all relevant aspects of Web services in order to facilitate the automatization of discovering, combining and invoking electronic services over the Web. In this paper we describe the overall structure of (...) WSMO by its four main elements: ontologies, which provide the terminology used by other WSMO elements, Web services, which provide access to services that, in turn, provide some value in some domain, goals that represent user desires, and mediators, which deal with interoperability problems between different WSMO elements. Along with introducing the main elements of WSMO, we provide a logical language for defining formal statements in WSMO together with some motivating examples from practical use cases which shall demonstrate the benefits of Semantic Web Services. (shrink)

El artículo tiene por objeto analizar la construcción del conocimiento mapuche según el discurso de kimches. Sostenemos que en la educación familiar existe un proceso de construcción de conocimientos propios como un sistema de saberes y contenidos educativos para la formación de personas. La metodología empleada es la investigación educativa. Los resultados parciales muestran una descripción acerca de la lógica de los conocimientos educativos propios, para contextualizar la enseñanza y el aprendizaje de las ciencias en el medio escolar, desde la (...) educación intercultural en contexto mapuche. The aim of this article is to analyze the construction of Mapuche knowledge based on the kimches speech. We argue that within family education, there exists a process of constructing their own knowledge, as a system of knowledge and educational contents for forming individuals. The research methodology applied corresponds to education research. Preliminary results describe the logic of individual educational knowledge from intercultural education in the Mapuche context, so as to contextualize the teaching and learning of Science in schools. (shrink)

El artículo ana liza ciertas tensiones internas en la filosofía del arte de Danto, derivadas de una tensión originaria, la que se da entre esencialismo eternizante e historicismo. Analiza después la definición del arte que ofrece Danto, interpretando que es una definición poco específica, a falta de una mayor caracterización del símbolo artístico. Concluye con la consideración de la tesis de los indiscernibles perceptivos, y el problema que plantea en relación con una de las dos condiciones esenciales del arte, la (...) de la "encarnación del significado", problema que se mantiene a la hora de pensar la belleza artística. (shrink)

Marina Garcés Anagrama 2017, 80 pp. Barcelona ISBN: 978-84-339-1614-3.

Many scholars have looked for similarities between the recent crisis in the Eurozone and the crises that have occurred in the past in developing countries and particularly in Latin America. Problems of balance of payments, public debt, overvaluation of the exchange rate and unregulated capital inflows are frequently mentioned to compare common features of different crisis events. Additionally, Continental European countries are following similar processes of welfare state retrenchment and labour market segmentation to Latin American cases in the past, but (...) in different institutional contexts and with different levels of economic development. This article will discuss common features of past Latin American crises and the current crisis in the Eurozone in order to show how such a comparison could help to manage (and avoid) crises in an integrated financial world as well as to teach how a faulty institutional design can arise from a defective understanding of how financial capitalism works in a complex internationally integrated economic system. (shrink)

In this article, we examine the role of several consumers’ cognitive and psychographic traits in their perceptions of retailers’ deceptive practices and the different effects on perceived deception associated with online vis-à-vis in-store shopping. Building on theoretical models of persuasion in consumer behavior, we hypothesize that the antecedents of perceived deception in traditional settings are the same as those on the Internet, while the intensity of the impact of these antecedents differs between the online and the offline environment. Results suggest (...) that the effects of individual’s cognitive traits and risk aversion on perceived deception are more relevant when consumers shop online than when they purchase from traditional stores. Conversely, psychographic traits play a more important role in explaining perceived deception in the traditional shopping context as compared to the online channel. Several theoretical and managerial implications are derived from these findings. (shrink)

This article deals with the methodological procedures employed by Johannes Kepler, particularly those used in the process of elaboration of the two first laws of planetary movements. Its aim is to show that the astronomical practice of Kepler is linked with the proposal of (physical and mathematical) hypothesis and with valuing precision in observational data, with the goal of obtaining, by means of rigorous procedures, the (mathematically expressed) regularities of planetary motions. It was only afterwards that Kepler looked for an (...) explanation of the regularities (laws) discovered, formulating the hypothesis of the magnetic action exerted by the Sun, which is located at the physical center of the system. In the new astronomy, he modifies the methodological status of astronomical hypotheses in the beginning of 17th century (present in Ptolemy, Copernicus and Brahe), promoting the passage from a mathematical descriptive astronomy to a physical-mathematical explicative astronomy. (shrink)

En su comentario a la Isagoge, Duns Escoto se pregunta dónde se halla el universal: ¿en las cosas o en el intelecto? Caracterizando al universal como universal lógico y accidente intencional de la esencia, en su respuesta se articulan la dimensión ontológica y la dimensión semántica del universal: con el intelecto que lo causa y con la cosa que denomina. Analizaremos estas dos relaciones y las implicaciones que se siguen en el orden de la predicación a partir del ejemplo propuesto (...) por Escoto: «hombre es universal». In his Questions on Porphyry’s Isagoge, Scotus asks about the place of inherence of the universal: ¿is it in the things or in the intellect? Being established the universal as logical universal and intentional accident of the essence, in Scotus’s answer the ontological and the semantical dimensions of the universal are articulated: with the intellect which causes it and with the thing it designates. We will analyse both of these relations and their implications in the order of predication taking into account Scotus’s example «man is universal». (shrink)

En este trabajo se ofrece una propuesta de aplicación práctica del concepto de Pathosformeln acuñado por el historiador del Arte alemán Aby Warburg para los estudios literarios, estableciendo un vaso comunicante desde las imágenes representativas y visuales estudiadas por éste, hacia las imágenes mentales originadas en las descripciones de un texto literario, y las emociones que ellas comunican. Para ello, se escoge un variado corpus de ocho crónicas latinoamericanas, desde modernistas hasta el siglo XXI, cuyo tema sea la prostitución travesti, (...) acotando luego el ejemplo de aplicación a la exacerbación de la feminidad por parte de los protagonistas, y el punto de vista de los narradores al respecto, apoyado a su vez en la noción de performatividad de género de Judith Butler. Mediante citas textuales y comparación entre las representaciones de la prostituta travesti en estos textos de no ficción, se discute la aplicabilidad del concepto, así como las diferencias con el ampliamente estudiado uso de éste en la historiografía de las artes visuales. (shrink)

We propose a review of the theoretical assumptions of Social Policy as autonomous and normative science, in his history, doctrinal plurality and institutional diversity, especially on the current model of the Welfare State. Also, we discuss the impact on the same issue of a new social question, the integral human development, at the beginning of XXI century, in relation with the “social Europe”, the welfare society and the globalization.

La identidad cultural ha sido abordada desde diferentes disciplinas científicas, se va construyendo desde disímiles ángulos, de aquí que los referentes teóricos para su estudio procedan de diversas áreas del saber. Aunque no es un tema exclusivamente latinoamericano, es justamente América Latina uno de los lugares en que el análisis de esta problemática ha sido más polémico. El artículo presenta los resultados de un diagnóstico del estado de la identidad cultural de los estudiantes de la Preparatoria No.1, de la Universidad (...) Autónoma de Nuevo León, y propone un modelo pedagógico para el desarrollo de este fenómeno. Cultural identity has been studied from different scientific disciplines and considered from various perspectives. The theoretical references of its study come from diverse areas of knowledge. Being not exclusively a Latin American theme, Latin America is exactly one of the places that provide a controversial analysis. This article deals with the results of a study on cultural identity in students registered in the Preparatory n. 1, at the Autonomous University of Nuevo Leon, and presents an educational model for its development. (shrink)

RESUMENEl artículo propone una definición esencial del arte como símbolo. Plantea que la filosofía del arte no puede renunciar a preguntarse qué es lo que hace que algo sea arte, ni contentarse con una respuesta de tipo externalista. Discute en esa línea la definición histórica de N. Carroll. Formula unas condiciones básicas del simbolismo y busca caracterizar lo que hay de específico en el símbolo artístico, lo que lo diferencia de los otros símbolos. Se enfrenta a las críticas al simbolismo (...) que actualmente se dan en ciertas teorías y prácticas artísticas.PALABRAS CLAVEDEFINICIÓN ESENCIALISTA. DEFINICIÓN HISTÓRICA. SIMBOLISMO. REPRESENTACIÓN.ABSTRACTThis article proposes an essential definition of art as symbol. The autor holds that the philosophy of art cannot give up the question about what is it that determines that something is to be considered as art and neither can be satisfied with an answer of an externalist type. This is why the historic definition of N.Caroll is discussed. The author establishes the basic conditions of symbolism and seeks to characterize the specific traits of the artistic symbol, which differentiates it from the other symbols. He faces the critics to symbolism which nowadays can be found in certain theories and artistic practices.KEY WORDSESSENTIALIST DEFINITION, HISTORIC DEFINITION, SYMBOLISM, REPRESENTATION. (shrink)

The ambiguous-cue task is composed of two-choice simultaneous discriminations involving three stimuli: positive (P), ambiguous (A) and negative (N). Two different trial types are presented: PA and NA. The ambiguous cue (A) served as an S- in PA trials, but as an S+ in NA trials. When using this procedure, it is typical to observe a less accurate performance in PA trials than in NA trials. This is called the ambiguous-cue effect. Recently, it was reported in starlings that the ambiguous-cue (...) effect decreases when the stimuli are presented on an angled (120°) panel. The hypothesis is that the angled panel facilitates that the two cues from each discrimination are perceived as a compound, precluding value transfer via a second-order conditioning mechanism. In this experiment, we used pigeons and a flat panel. Nevertheless, our data were quite similar to the previous data in starlings. We conclude that the form of the panel cannot explain the ambiguous-cue effect. Several alternatives to be explored in future experiments are suggested. The riddle of the ambiguous-cue problem still remains unsolved. (shrink)

In this study, metrical clauses are used to analyze the critical reconstruction and rhetorical scheme of Tertullian’s treatise on prayer as a preliminary study to an edition of the work. In the first part, the description and frequency of the clauses of the De oratione is presented, followed by an analysis of some variants of the text from the metrical point of view, and then a study of the clauses in the biblical quotations and in the translation of the paternoster (...) offered by Tertullian. As a culmination of the Paper, the structure of the treatise is analyzed from the distribution of the most frequent metrical clauses. A final appendix contains the clauses of the treatise. (shrink)

Rorty enfrentou as contingências do mundo contemporâneo apostando no partilhamento da “retórica das democracias liberais”, como a mais aceita e mais adequada em uma sociedade caracterizada pelo fim das metanarrativas e das condutas de moral absoluta. Mas essa aposta resvala claramente num pragmatismo moral mal disfarçado. Luhmann, ao contrário, levou até o fim a preocupação, abandonada por Rorty, de elaborar uma teoria antimetafísica e despida de um projeto normativo para a sociedade contemporânea. Sua teoria dos sistemas enfrenta as contingências do (...) mundo, excluindo tudo que for externo ao sistema, ou seja, tudo que não possa se tornar um mecanismo de manutenção da identidade dos sistemas face à complexidade do mundo. Rorty faces the contingencies of contemporary world by betting on the sharing of liberal democracies rhetorics as most fitted for a society characterized by the end of meta-narratives and absolute moral conducts. This bet clearly presents a moral pragmatism contrary to the ideas of Luhmann, who takes to its final consequences the project abandoned by Rorty of elaborating an antimetaphysics without a normative project for contemporary society. Luhmann’s theory of systems faces the contingencies of the world by excluding all that is external to the system, that is, all that cannot be converted into a mechanism of the maintenance of the identity of systems in facing the complexity of the world. (shrink)

La medicina en Alemania durante la época nacionalsocialista constituyó un área social de intensas contradicciones éticas y existenciales. Frente a los crímenes de lesa humanidad, perpetrados” por médicos serviciales al poder y ávidos de reconocimiento, en nombre de una “ciencia de la raza” y de una “guerra total, hubo también actitudes y gestos oponentes de quienes persistieron –con un alto riesgo personal– en mantener una visión humanista de la profesión y su quehacer en la sociedad. Este artículo continúa la exposición (...) iniciada en el décimo número de la Revista Polis, y aborda las gestiones en contra de los crímenes de la medicina bajo la égida nacionalsocialista. Se apoya en un estudio sistemático de fuentes originales y en las recientes investigaciones sobre la temática en Alemania y en los países ocupados por el régimen nazi durante la II Guerra Mundial. (shrink)