Objective of the study: To analyze the costs and profits of sugarcane production regarding the cultural practices of sugarcane suppliers. Methodology/approach: This study positions itself in this gap by comparatively analyzing 6 types of cultural practices: unraveling, windrowing, application of correctives, herbicides, insecticides and fertilizers, with the option of two systems Fixed rate (TF) and Variable rate (TV). Originality/Relevance: Brazil is a world reference in sugarcane production, with the State of São Paulo being the largest Brazilian producer. However, for sugarcane (...) suppliers to maintain this activity there is a need to reduce production costs and increase profitability/ha. However, there is a theoretical-practical gap in the financial assessment (costs and profits) of different cultural practices inherent to sugarcane production. Main results: The results demonstrated that the costs of cultural practices represent more than 30% of the total sugarcane production costs. The TF system proved to be more cost-efficient in the following operations: correctives, herbicides and insecticides. In the application of fertilizers, the TV system, in broadcast mode, had the best result. Finally, the profit/ton was R$1.70, demonstrating a very low profit margin/ha given the risk of the activity. Theoretical/methodological contributions: The sample for this research comprised 55 sugarcane suppliers from the State of São Paulo, whose data were obtained through a survey. The comparative analysis was based on the difference in costs of cultural practices and the estimation of the level of certainty (profit/costs), analyzed through the cumulative frequency carried out through the Monte Carlo Simulation (SMC). (shrink)

In this chapter we use methods of corpus linguistics to investigate the ways in which mathematicians describe their work as explanatory in their research papers. We analyse use of the words explain/explanation (and various related words and expressions) in a large corpus of texts containing research papers in mathematics and in physical sciences, comparing this with their use in corpora of general, day-to-day English. We find that although mathematicians do use this family of words, such use is considerably less prevalent (...) in mathematics papers than in physics papers or in general English. Furthermore, we find that the proportion with which mathematicians use expressions related to ‘explaining why’ and ‘explaining how’ is significantly different to the equivalent proportion in physics and in general English. We discuss possible accounts for these differences. (shrink)

Artificial intelligence has been adopted in a wide range of domains. This shows the imperative need to contribute to making citizens insightful actors in debates and decisions involving the adoption of AI mechanisms. Currently, existing approaches to the teaching of basic AI concepts through programming treat machine intelligence as an external element/module. After being trained, that external module is coupled to the main application. Combining block-based programming and WiSARD weightless artificial neural networks, this article presents the conceptualization and design of (...) a new methodology, AI from concrete to abstract, to endow general people with a minimum understanding of what AI means. The main strategy adopted was to include AI training and classification primitives as blocks that compose an otherwise conventional computer program. This way, the programmer can use these blocks as he/she uses other programming constructs. In order to achieve this purpose, we also propose BlockWiSARD, a block-based programming environment designed to promote the demystification of artificial intelligence via practical activities related to the development of learning machines, as well as through the observation of their learning process. As a beneficial side effect of BlockWiSARD, the difference between a program capable of learning from data and a conventional computer program becomes more evident. In addition, the simplicity of the WiSARD weightless artificial neural network model enables easy visualization and understanding of training and classification tasks internal realization. (shrink)

Carnival was brought to the New World by Spanish and Portuguese colonizers, and it has been preserved there up to our day, although in the meantime it has almost disappeared from the countries where it originated. One asks oneself if Carnival has kept its original characteristics over the years, or if it instead has been transformed, and if so, how. The ethnological and cultural variety present in Latin America leads us to think that there must have been an evolution over (...) the years, and that Carnival should show some signs of acculturation. It is the examination of these two points that will be the subject of our study. (shrink)

Ce livre résume une recherche que l'auteur a menée pendant de très longues années, et qu'il a voulu exposer comme élargissement de l'œuvre de William James, fondateur de la philosophie et de la psychologie américaines.

Este libro quiere desarrollar un pensamiento que, poniéndose del lado de las víctimas y rechazando la salida nihilista, abogue por la construcción del futuro sobre la herencia de la racionalidad griega y del cristianismo, sin renunciar tampoco a lo que pueda ser heredado de lo mejor de la tradición ilustrada, convencido de que sólo un nuevo encuentro entre fe y razón puede devolver al hombre la confianza en sí mismo.

Este libro recoge una veintena de estudios que, desde el punto de vista de la teoría social abordan aspectos variados de la Globalización, el Riesgo y la Reflexividad, considerados como los retos fundamentales con los que ha de enfrentarse la sociología actual.

This book presents an interdisciplinary exploration of digital sovereignty in China, which are addressed mainly from political, legal and historical point of views. The text leverages a large number of native Chinese experts among the authors at a time when literature on China’s involvement in internet governance is more widespread in the so-called “West”. Numerous Chinese-language documents have been analysed in the making of this title and furthermore, literature conceptualising digital sovereignty is still limited to journal articles, making this one (...) of the earliest collective attempts at defining this concept in the form of a book. Such characteristics position this text as an innovative academic resource for students, researchers and practitioners in international relations (IR), law, history, media studies and philosophy. (shrink)

Rio de Janeiro, the opening of the carnival. On the Friday evening preceding Mardi Gras, the mayor of Rio hands over the keys to the city to King Momo, sovereign of the carnival. Immediately the samba breaks out in the brightly lit streets of the city. Newspapers, magazines and television feature big headlines describing the event and glorifying the holiday kingdom. They all report that the city is being shaken by winds of madness, that licence and inversions of every variety (...) are rampant, that the leveling of individuals and the abolition of social distances illustrate the resolutions of conflicts in a collective dream of joy and happiness…. (shrink)

El pluralismo ontológico depende estrechamente de la doctrina de las relaciones externas. Los términos son singularidades materiales y las relaciones son singularidades virtuales, no menos reales que las primeras y que responden a una lógica propia. En su «empirismo trascendental» Deleuze retoma de modo implícito la discusión tradicional acerca de las relaciones (Bradley, Russell, Whitehead y James), aunque reconduciéndola hacia la ontología de lo virtual que actúa en el plano de inmanencia. Si nuestro análisis es correcto, la ontología misma podría (...) ser definida como una ecología de las relaciones externas que se establecen entre los diversos planos de organización (especies, individuaciones, actualidades) y el plano de inmanencia (medio ecológico o virtual). (shrink)

Taxonomies of living things and the methods used to produce them changed little with the institutionalization of evolutionary thinking in biology. Instead, the relationships expressed in existing taxonomies were merely reinterpreted as the result of evolution, and evolutionary concepts were developed to justify existing methods. I argue that the delay of the Darwinian Revolution in biological taxonomy has resulted partly from a failure to distinguish between two fundamentally different ways of ordering identified by Griffiths : classification and systematization. Classification consists (...) of ordering entities into classes, groups defined by the attributes of their members; in contrast, systematization consists of ordering entities into systems, more inclusive entities whose existence depends on some natural process through which their parts are related. Evolutionary, or phylogenetic, systematics takes evolutionary descent to be the natural process of interest in biological taxonomy. I outline a general framework for a truly phylogenetic systematics and examine some of its consequences. (shrink)

Terms loaded with informational connotations are often employed to refer to genes and their dynamics. Indeed, genes are usually perceived by biologists as basically ‘the carriers of hereditary information.’ Nevertheless, a number of researchers consider such talk as inadequate and ‘just metaphorical,’ thus expressing a skepticism about the use of the term ‘information’ and its derivatives in biology as a natural science. First, because the meaning of that term in biology is not as precise as it is, for instance, in (...) the mathematical theory of communication. Second, because it seems to refer to a purported semantic property of genes without theoretically clarifying if any genuinely intrinsic semantics is involved. Biosemiotics, a field that attempts to analyze biological systems as semiotic systems, makes it possible to advance in the understanding of the concept of information in biology. From the perspective of Peircean biosemiotics, we develop here an account of genes as signs, including a detailed analysis of two fundamental processes in the genetic information system (transcription and protein synthesis) that have not been made so far in this field of research. Furthermore, we propose here an account of information based on Peircean semiotics and apply it to our analysis of transcription and protein synthesis. (shrink)

An examination of the post-Darwinian history of biological taxonomy reveals an implicit assumption that the definitions of taxon names consist of lists of organismal traits. That assumption represents a failure to grant the concept of evolution a central role in taxonomy, and it causes conflicts between traditional methods of defining taxon names and evolutionary concepts of taxa. Phylogenetic definitions of taxon names (de Queiroz and Gauthier 1990) grant the concept of common ancestry a central role in the definitions of (...) taxon names and thus constitute an important step in the development of phylogenetic taxonomy. By treating phylogenetic relationships rather than organismal traits as necessary and sufficient properties, phylogenetic definitions remove conflicts between the definitions of taxon names and evolutionary concepts of taxa. The general method of definition represented by phylogenetic definitions of clade names can be applied to the names of other kinds of composite wholes, including populations and biological species. That the names of individuals (composite wholes) can be defined in terms of necessary and sufficient properties provides the foundation for a synthesis of seemingly incompatible positions held by contemporary individualists and essentialists concerning the nature of taxa and the definitions of taxon names. (shrink)

At least three different issues are commonly referred to by the term “the species problem”: one concerns the necessary properties of species, a second the processes responsible for the existence of species, and a third methods for inferring species limits. Solutions have recently been proposed to the first two problems, which are conceptual in nature (the third is methodological). The first equates species with metapopulation lineages and proposes that existence as a separately evolving metapopulation lineage be considered the only necessary (...) property of species. The second views the species category as a cluster concept and proposes that no single process or set of processes be considered necessary for the existence of species. Although these two solutions have been portrayed as being in conflict, they are, in fact, highly compatible. Moreover, the proposals in question clarify the problem concerning methods for inferring the limits of species, which has for a long time been confused with the problem concerning the necessary properties of species. Together these proposals provide the opportunity for biology to move beyond debates about the definition of the species category and focus on estimating the boundaries and numbers of species as well as studying the diverse processes involved in their origin and persistence. BioEssays 27:1263–1269, 2005. © 2005 Wiley Periodicals, Inc. (shrink)

Mimicry and deception are two important issues in studies about animal communication. The reliability of animal signs and the problem of the benefits of deceiving in sign exchanges are interesting topics in the evolution of communication. In this paper, we intend to contribute to an understanding of deception by studying the case of aggressive signal mimicry in fireflies, investigated by James Lloyd. Firefly femmes fatales are specialized in mimicking the mating signals of other species of fireflies with the purpose of (...) attracting responding males to become their prey. These aggressive mimics are a major factor in the survival and reproduction of both prey and predator. It is a case of deception through active falsification of information that leads to efficient predation by femmes fatales fireflies and triggered evolutionary processes in their preys’ communicative behaviors. There are even nested coevolutionary interactions between these fireflies, leading to a remarkable system of deceptive and counterdeceptive signaling behaviors. We develop here a semiotic model of firefly deception and also consider ideas advanced by Lloyd about the evolution of communication, acknowledging that deception can be part of the explanation of why communication evolves towards increasing complexity. Increasingly complex sign exchanges between fireflies evolve in an extremely slow pace. Even if deceptive maneuvers are played out time and time again between particular firefly individuals, the evolution of the next level of complexity—and thus the next utterance in the dialogue between species—is likely to take an immense amount of generations. (shrink)

Se presenta un artículo acerca de los factores de riesgo asociados a la dermatitis atópica en niños, enfermedad con una incidencia significativa en el municipio Nuevitas. A partir de la revisión de Historias Clínicas en los Consultorios 4,5 y 6 del territorio, en el período comprendido de enero a septiembre del 2015, se constató como importantes los factores genéticos y los medioambientales en estos pacientes. Con el objetivo de disminuir los últimos se elaboró una estrategia educativa para la familia de (...) los infantes. Se aplicó una encuesta inicial y una final con una población de 60 familias y una muestra de 30 que representa el 50 % con el criterio de inclusión de tener algún o algunos de estos factores. Se concluye que la estrategia contribuyó a transformar los estilos de vida en las familias estudiadas. The article deals with risk factors associated to atopic dermatitis in children, a disease with a significant effect on Nuevitas municipality. Starting from the checking of clinical histories in doctors' offices 4, 5 and 6 in the municipality from January to September 2015, genetic and environmental factors were confirmed to be important. Aiming at lessening these risks, an educational strategy for the children's families was developed. An initial and a final survey of a population of 60 families and a sample of 30, make for a 50 % with inclusion criterion of having some or a lot of these factors. It was reached the conclusion that the strategy contributed to transforming lifestyles in the studied families. (shrink)

RESUMEN Desde una visión ético-ontológica de la vida, esta posee una entidad propia. Una entidad que no dejaría de ser tal bajo un reconocimiento pleno de la entidad jurídica de todo lo vivo y sus capacidades de agencia, ya que ello implicaría no el flotar jerárquico-simbólico de una significación antropocéntrica sino el flotar discursivo de una significación biocéntrica mucho más amplia e igualitaria. En esa medida, el objetivo principal de este artículo estriba en relacionar de forma reflexiva y filosófica el (...) vasto y complejo universo de lo natural con las particularidades antropocéntricas, jerárquicas y excluyentes de la filosofía contractualista, centrada esta última, para los fines de este texto, en el problema de la legitimidad de la soberanía tanto en el inicio del Estado moderno en la conflictividad humana hobbesiana como en las relaciones geopolíticas de la actualidad. ABSTRACT From an ethical and ontological view of life, it is accepted that life has its own entity. An entity that does not cease to be such under a full recognition of the legal entity of all living things and their capabilities of agency, since that would imply not a hierarchical-symbolic float with an anthropocentric significance, but a discursive float with a biocentric significance; much more wide and egalitarian. To that extent, the main objective of this article is to relate in a reflective and philosophical way the vast and complex universe of the natural to the anthropocentric, hierarchical and exclusive features of the contractualism philosophy. For the purposes of this text, contractualism philosophy will be centered on the problem of the legitimacy of sovereignty at the beginning of the modern state with the Hobbesian human conflict and in today geopolitical relations. (shrink)

The valence–space metaphor research area investigates the metaphorical mapping of valenced concepts onto space. Research findings from this area indicate that positive, neutral, and negative concepts are associated with upward, midward, and downward locations, respectively, in the vertical plane. The same research area has also indicated that such concepts seem to have no preferential location on the horizontal plane. The approach–avoidance effect consists in decreasing the distance between positive stimuli and the body and increasing the distance between negative stimuli and (...) the body. Thus, the valence–space metaphor accounts for the mapping of valenced concepts onto the vertical and horizontal planes, and the approach–avoidance effect accounts for the mapping of valenced concepts onto the “depth” plane. By using a cube conceived for the study of allocation of valenced concepts onto 3D space, we show in three studies that positive concepts are placed in upward locations and near the participants’ body, negative concepts are placed in downward locations and far from the participants’ body, and neutral concepts are placed in between these concepts in both planes. (shrink)

Ernst Mayr played a central role in the establishment of the general concept of species as metapopulation lineages, and he is the author of one of the most popular of the numerous alternative definitions of the species category. Reconciliation of incompatible species definitions and the development of a unified species concept require rejecting the interpretation of various contingent properties of metapopulation lineages, including intrinsic reproductive isolation in Mayr's definition, as necessary properties of species. On the other hand, the general concept (...) of species as metapopulation lineages advocated by Mayr forms the foundation of this reconciliation, which follows from a corollary of that concept also advocated by Mayr: the proposition that the species is a fundamental category of biological organization. Although the general metapopulation lineage species concept and Mayr's popular species definition are commonly confused under the name "the biological species concept," they are more or less clearly distinguished in Mayr's early writings on the subject. Virtually all modern concepts and definitions of the species category, not only those that require intrinsic reproductive isolation, are to be considered biological according to the criterion proposed by Mayr. Definitions of the species category that identify a particular contingent property of metapopulation lineages (including intrinsic reproductive isolation) as a necessary property of species reduce the number of metapopulation lineages that are to be recognized taxonomically as species, but they cause conflicts among alternative species definitions and compromise the status of the species as a basic category of biological organization. (shrink)