Cytoplasmic messenger ribonucleoprotein particles (mRNPs) represent the cellular transcriptome, and recent data have challenged our current understanding of their architecture, transport, and complexity before translation. Pre‐translational mRNPs are composed of a single transcript, whereas P‐bodies and stress granules are condensates. Both pre‐translational mRNPs and actively translating mRNPs seem to adopt a linear rather than a closed‐loop configuration. Moreover, assembly of pre‐translational mRNPs in physical RNA regulons is an unlikely event, and co‐regulated translation may occur locally following extracellular cues. We envisage (...) a stochastic mRNP transport mechanism where translational repression of single mRNPs—in combination with microtubule‐mediated cytoplasmic streaming and docking events—are prerequisites for local translation, rather than direct transport. (shrink)

The “language-communication-society” triangle defies traditional scientific approaches. Rather, it is a phenomenon that calls for an integration of complex, transdisciplinary perspectives, if we are to make any progress in understanding how it works. The highly diverse agents in play are not merely cognitive and/or cultural, but also emotional and behavioural in their specificity. Indeed, the effort may require building a theoretical and methodological body of knowledge that can effectively convey the characteristic properties of phenomena in human terms. New complexity approaches (...) allow us to rethink our limited and mechanistic images of human societies and create more appropriate emo-cognitive dynamic and holistic models. We have to enter into dialogue with the complexity views coming out of other more ‘material’ sciences, but we also need to take steps in the linguistic and psycho-sociological fields towards creating perspectives and concepts better fitted to human characteristics. Our understanding of complexity is different – but not opposed – to the one that is more commonly found in texts written by people working in physics or computer science, for example. The goal of this book is to extend the knowledge of these other more ‘human’ or socially oriented perspectives on complexity, taking account of the language and communication singularities of human agents in society. (shrink)

This book offers insights on the study of natural language as a complex adaptive system. It discusses a new way to tackle the problem of language modeling, and provides clues on how the close relation between natural language and some biological structures can be very fruitful for science. The book examines the theoretical framework and then applies its main principles to various areas of linguistics. It discusses applications in language contact, language change, diachronic linguistics, and the potential enhancement of classical (...) approaches to historical linguistics by means of new methodologies used in physics, biology, and agent systems theory. It shows how studying language evolution and change using computational simulations enables to integrate social structures in the evolution of language, and how this can give rise to a new way to approach sociolinguistics. Finally, it explores applications for discourse analysis, semantics and cognition. (shrink)

Este artículo tiene como objetivo, asumir desde Colombia y América Latina,el texto más renombrado del filósofo alemánWalter Benjamin: Tesis sobre elConcepto de Historia. En mi interpretación, el tiempo histórico incluye larevolución, que Benjamin sitúa en la tradición de Marx y en la “Liga Espartaco” de Alemania, para reivindicar plenamente a los vencidos y excluidos.

Este artículo describe el perfil universitario de un maestro que ha dedicado toda su vida a la Universidad: L. Polo. Profesor de casi todas las materias de filosofía, preocupado por el descubrimiento de la verdad en su más alto nivel, por la interdisciplinariedad, etc. Sus cursos, sin repetirse nunca, han sido siempre un pensar en voz alta centrando la atención en los temas centrales. La mayor parte de sus libros son transcripción de esas clases. Su pensamiento se puede describir como (...) una filosofía de la esperanza. (shrink)

The diverse array of plants at Kew is a haven for wildlife throughout the year. In spring, enchanting wildlfowl babies appear; summer flowers attract a host of insect pollinators; come autumn, parakeets and squirrels raid chestnuts, while in winter swans court – this is Heather Angel’s Wild Kew. In all, a stunning array of photographs and advice, the result of devoting a year to capturing Kew’s wildlife.

The Midewiwin is the traditional religious belief system central to the world view of Ojibwa in Canada and the US. It is a highly complex and rich series of sacred teachings and narratives whose preservation enabled the Ojibwa to withstand severe challenges to their entire social fabric throughout the 19th and 20th centuries. It remains an important living and spiritual tradition for many Aboriginal people today. The rituals of the Midewiwin were observed by many 19th century Euro-Americans, most of whom (...) approached these ceremonies with hostility and suspicion. As a result, although there were many accounts of the Midewiwin published in the 19th century, they were often riddled with misinterpretations and inaccuracies. Historian Michael Angel compares the early texts written about the Midewiwin, and identifies major, common misconceptions in these accounts. In his explanation of the historical role played by the Midewiwin, he provides alternative viewpoints and explanations of the significance of the ceremonies, while respecting the sacred and symbolic nature of the Midewiwin rituals, songs, and scrolls. (shrink)

La consecución de un ajuste óptimo entre los recursos humanos y las necesidades empresariales es uno de los objetivos más deseados por el management empresarial en la actualidad. A su vez, la administración y utilización de un sistema de competencias en el campo educativo y profesional se ha constituido como un ámbito de trabajo de especial relevancia en las últimas décadas. Partiendo de la vinculación entre estas dos ideas, eficaz gestión de los recursos humanos y manejo de un sistema de (...) competencias, este trabajo propone un modelo de entrevista de evaluación del desempeño basado en la gestión por competencias. Entendemos que dicho modelo permitiría a las empresas evaluar la adecuación del trabajador a su puesto a partir del análisis comparativo entre las competencias asignadas al puesto y las que efectivamente aporta el trabajador y, en caso de desajustes, actuar en consecuencia. (shrink)

How does a sign manage to represent an object? This is one of the central questions of philosophy. I want to ask a related question. How is it that several signs can represent the very same object? It is tempting to think there is little to this question beyond what can be said about the first. But things are not so simple. A pair of representations can denote the same object in a special way. For some anaphora-antecedent pairs or for (...) some occurrences of the same word, the signs corefer in a way that makes that very fact evident. In this sense, we may say that sometimes the relation of coreference is “de jure”. I begin the paper by outlining what I think are the three core properties of de jure coreference. This reveals that the phenomenon is genuine, ubiquitous and requires explanation. Next, I argue that the relation is not transitive. What this means is that just about every possible explanation is ruled out. For example, we can’t say that two signs are de jure coreferential because they mean the same thing, they are expressions of the same symbol or they correspond to the same variable, index or discourse referent. I do not pursue a solution here. (shrink)

The material in this book is philosophically (as opposed to theologically or religiously) oriented, stressing the problem of God as a logical and philosophical problem. The perspective is critically analytic in the Naturalistic-Humanistic tradition. The basic approach is an issues or problems approach, but this is set in a historical context with quotations from Greek philosophy, the Church Fathers, the Medieval period, and from modern philosophers. The aim is to enable students to see what is being said and has been (...) said about God and thereby fits this into a better framework in the light of present knowledge and society. It is hoped that students will develop an awareness and appreciation of the philosophical problems in the concept of God, that they will acquire the ability to engage in intelligent evaluation and exchange of ideas, and that they will display these qualities in their everyday thought. This volume is by no means exhaustive of all the themes in the Philosophy of Religion. The most fundamental ones about God's existence are covered thoroughly. The book is a starting point for more intensive work in the subject. It lays down the basic groundwork for an easy transition to other topics and to more sophisticated thought-patterns. The writing has been kept as concise and elementary as possible with short sections on a variety of topics. (shrink)

I propose a conceptual framework for emotions according to which they are best understood as the feedback mechanism a creature possesses in virtue of its function to learn. More specifically, emotions can be neatly modeled as a measure of harmony in a certain kind of constraint satisfaction problem. This measure can be used as error for weight adjustment (learning) in an unsupervised connectionist network.

A-LOGIC is a full-length book (600+ pg). It functions as a system of logic designed to: 1) solve the standard paradoxes and major problems of standard mathematical logic; 2) minimize that logic's anomalies with respect to ordinary language, yet; 3) prove that all theorems in mathematical logic are tautologies. It covers lst order logic the logic of the words "and", "or", "not", "all" and "some". But it also has a non truth functional "if...then" and differs in its definition of validity, (...) its semantics and its theorems. In the book A-logic is contrasted step by step with standard mathematical logic as presented and defended by Quine. All of standard logic's theorems are proven tautologies in A-logic. But some argument-forms called "valid" in standard logic are not valid in A-logic -- notably non-sequiturs like "(P and not-P), therefore Q". In addition A-logic has many tautologies with its non-truthfunctional "if ... then" that standard logic can not derive -- e.g., "Not-(if P&Q then not-P)." A-logic's semantics is based on syntactically defined concepts of logical synonymy and containment of meanings rather than on truth-values and truth-functions. Its "if...then" sentences (called "C-conditionals") are valid if and only if (i) the meaning of the consequent is logically contained in that of the antecedent, and (ii) the antecedent and consequent are jointly consistent. The predicate "valid" holds only of C-conditionals and arguments. No valid C-conditionals are translatable into standard logic though all of them imply tautologies of standard logic. (shrink)

because whenever an observer observes, he creates a contingent distinction between what is observed and what is by necessity left unobserved. ...

Se analiza el papel del pathos como condición de emergencia tanto del logos como de la episteme, lo cual nos lleva reconocer que a la par de una concepción “intelectualista” de la teoría platónica del conocimiento, en la que es necesaria la supresión de todos los elementos irracionales que nublan el juicio, existe otra perspectiva, sobre todo sustentada en el Fedro, en la cual el pathos, expresado como manía amorosa, no es solamente una etapa a superar para acceder a la (...) intuición de las Formas, sino que ella misma se convierte en una experiencia cognitiva que devuelve al conocimiento su carácter humano.We analyze the role of pathos as emergency condition for both, logos and episteme, which leads us to recognize that along with an intellectual conception of the Platonic theory of knowledge, that demands to abolish all irrational elements that cloud the judgment, there is another perspective, especially supported by the Phaedrus, in which pathos, understood as love like madness, is not just a stage to overcome in order to arrive at the intuition of Forms, but it becomes itself a cognitive experience that gives back to knowledge its human nature. (shrink)

According to expressivism about avowals, the meaning of typical self-ascriptions of mental states is a matter of expressing an attitude, rather than describing a state of affairs. Traditionally, expressivism has been glossed as the view that, qua expressions, avowals are not truth-evaluable. Contemporary neoexpressivists like Finkelstein and Bar-On have argued that avowals are expressions, and truth-evaluable besides . In contrast, this paper provides a defence of the view that avowals are, qua expressions, truth-evaluable. This defence is based on an argument (...) from disagreement, to the effect that an adequate explanation of the existence of disagreement involving both cases of avowals and cases of nonlinguistic expression (like winces) supports a view according to which genuine (sincere, truthful) expression is what truth amounts to in avowals. (shrink)

ABSTRACT It is well-known that Artificial Intelligence requires Logic. But its Classical version shows too many insufficiencies. So, it is very necessary to introduce more sophisticated tools, as may be Fuzzy Logic, Modal Logic, Non-Monotonic Logic, and so on. When you are searching the possible precedent of such new ideas, we may found that they are not totally new, because some ancient thinkers have suggested many centuries ago similar concepts, certainly without adequate mathematical formulation, but in the same line: against (...) the dogmatism and the dualistic vision of the world: absolutely true vs. absolutely false, black vs. white, good or bad by nature, 0 vs.1, etc. We attempt to analyze here some of these greatly unexplored, and very interesting early origins. (shrink)

In recent years, a keen interest has emerged in the world of science regarding the relationship between the biological and the psychological aspects of the mind. How can the neural activity of the brain create thoughts, memory, feelings, and emotions? The answer to this question is the subject of this book. Jorge Angel M.D. posits that, although the mind is the byproduct of the firing of neurons in different parts of the brain, it is also the organizing principle of brain (...) activity. The brain and the mind have a symbiotic relationship that is present throughout the life span of the individual. In an effort to find answers to the riddle of the mind-brain relationship, Dr. Angel describes his personal experiences of many years in the practice of the healing arts, and he draws on a lifetime of study into the biology of the brain. The author maintains that the mind is much more than consciousness. Consciousness has been described metaphorically as the small tip of an iceberg floating in a sea of unconsciousness. Dwelling on the evolutionary development of the brain, he explains how intellectual experience arises from the activity of cell aggregates in the residual reptilian, residual mammalian, and rational parts of the brain that we have inherited from our animal ancestors through billions of adaptive trade-offs over millions of years. The human mind is one of the last unresolved mysteries in the world of science. This book provides a meaningful insight into the nature and function of the mind in normal subjects and their ability to think, feel, and remember. It also portrays in detail the changes that can be brought on the mind of humans by an assortment of psychological and neurological disorders. (shrink)

Sometimes two expressions in a discourse can be about the same thing in a way that makes that very fact evident to the participants. Consider, for example, 'he' and 'John' in 'John went to the store and he bought some milk'. Let us call this 'de jure' coreference. Other times, coreference is 'de facto' as with 'Mark Twain' and 'Samuel Clemens' in a sincere use of 'Mark Twain is not Samuel Clemens'. Here, agents can understand the speech without knowing that (...) the names refer to the same person. After surveying many available linguistic and pragmatic tools (intentions to corefer, presuppositions, meanings, indexing, discourse referents, binding etc.) I conclude that we must posit a new semantic primitive to account for de jure coreference. (shrink)