Sergio Gomez

Desde un enfoque biosemiótico —es decir, centrado en las maneras como el significado y la vida coemergen y se relacionan estrechamente— este artículo se propone establecer tres conexiones entre las teorías del biólogo estonio Jakob von Uexküll y las teorías de los biólogos chilenos Humberto Maturana y Francisco Varela. Tales conexiones surgen a partir de tres preguntas generales con respecto a la vida y la construcción de sentido en los organismos: la organización, la experiencia y la adaptación. Así, en el recorrido del texto se configuran puntos de cruce e ideas complementarias entre las teorías más salientes tanto de von Uexküll como de la biología enactiva de Maturana y Varela: principalmente, se establecen conexiones entre el concepto de ciclo funcional y la teoría de la autopoiesis; entre el Umwelt, o mundo-entorno, y la noción de mundo enactivo; y entre el contrapunto adaptativo y el acoplamiento estructural.

I pose three general questions to the target article: (a) How radical should the explanatory models of the prospective Maturanian turn be? To address this, I propose a recurrential, narrative approach focused on observing the history of meaning grounding of an agent and then explaining such history by creating a story. (b) Should this turn also avoid human exceptionalism and, instead, understand language as part of a bigger systemic structure of agents’ ways of sense-making and action? (c) What is the place of the latter theories of education proposed by Maturana, particularly the concept of emotioning, in the prospective turn?

Since their introduction in Colombia in the '80s for Pablo Escobar’s extravagant zoo, hippos have become an ecological problem around the basin of the Magdalena River. This article proposes an ecosemiotic discourse analysis of different visions of nature enacted by stakeholders and public opinion around the management of hippos in Colombia. Concretely, we focus on three particular discourses and visions of nature: animalista, narco-cultural, and conservacionista. In this article, we present the relevant social and ecological context of Colombia, the visions of nature theory and the impact of such visions on conservation measures regarding so-called invasive species; we describe and analyze the three visions of nature we center on, and present a computational analysis of discourse dynamics and controversies in Twitter between of such visions of nature; and we reflect on possible courses of action and recommendations about addressing the close interrelation of public discourses and ecosystem conservation by proposing an alternative view, based on the biosemiotic framework of semiocide, to the concept of invasive species.

Despite globalization a progressively increasing economic and financial concentration in the ‘cores’ of the world economy (e.g. EU) as well as the rise of new socioeconomic marginalization of peripheries (e.g. Maghreb and Mashraq) has been observed since the early 1980s. Marginalization has produced its own models of specialization in production which reflect in various countries and regions the needs of the ‘cores’ economy forces. A regional strategy for regional co-operation, so called co-development, is advanced to overcome the current economic and social problems faced by marginalized regions in relation to world economic trends.

This article delineates the notion of conjectural artworks—that is, ways of thinking and explaining formal and relational phenomena by visual means—and presents an appraisal and review of the use of such visual ways in the work of Chilean biologists and philosophers Humberto Maturana and Francisco Varela. Particularly, the article focuses on their recurrent uses of Cellular Automaton, that is, discrete, locally interacting, rule-based mathematical models, as conjectural artworks for understanding the concepts of autopoiesis, structural coupling, cognition and enaction: (i.e. Protobio and Bittorio). Additionally, the article proposes a new model of conjectural artwork based on an extension of cellular automaton: random Boolean networks namely, binary systems with variable local connections. Such model, as it is argued, is useful to connect the theoretical frameworks by Maturana and Varela, especially structural coupling and enaction, with other relevant fields such as biosemiotics’ Umwelt-research and cognitive landscapes in neurodynamics, and to advance and explore the concepts of structurally coupled categorization and generalization.

Adaptive optics are techniques used for processing the spatial resolution of astronomical images taken from large ground-based telescopes. In this work, computational results are presented for a modified curvature sensor, the tomographic pupil image wavefront sensor, which measures the turbulence of the atmosphere, expressed in terms of an expansion over Zernike polynomials. Convolutional neural networks are presented as an alternative to the TPI-WFS reconstruction. This technique is a machine learning model of the family of artificial neural networks, which are widely known for its performance as modeling and prediction technique in complex systems. Results obtained from the reconstruction of the networks are compared with the TPI-WFS reconstruction by estimating errors and optical measurements. The reconstructed wavefronts from both techniques are compared for wavefronts of 153 Zernike modes. For this case, a detailed comparison and grid search to find the most suitable neural network is performed, searching between multi-layer perceptron, CNN and recurrent networks topologies. In general, the best network was a CNN trained for TPI-WFS reconstruction, achieving better performance than the reconstruction software from TPI-WFS in most of the turbulent profiles, but the most significant improvements were found for higher turbulent profiles that have the lowest r0 values.

The problem of relevance, at individual agent scale – or how we decide what is adequate for our interpretation of the signs we encounter in the world – is a question that keeps reappearing in semiotics and other disciplines concerned with meaning. In this article I propose an approximation on relevance that conceives meaning as a trajectory across a cognitive landscape. Unlike conventional accounts on relevance, which presuppose mental processes built on feature-based representations, my proposal suggests conceiving cognition as a fluid and emergent field of attractors basins that become specified and modified when experiences appear, and conceiving meaning as a trajectory across the cognitive field. Consequently, I suggest that when cognitive landscapes better fit world experience, agents’ categorizations will be more relevant. My proposal is mainly supported by two approaches: the enactivist notion of structural coupling and the theories of dynamic neural populations of Walter Freeman III.

In this article, a semiotic approach is proposed to explain how human agents use and give meaning to art in complex contexts. Inspired by the psycho-historical approach on art appreciation, which attempts to embrace psychological and cognitive aspects of art sense-making, as well as the art-historical context dependence of artworks, an extended theory is suggested: an agent's art use and interpretation can be described using three general categories of meaning grounding: phylogenetic recurrence, ontogenetic recurrence and collective recurrence. These categories explain how a certain meaning of a sign is possible and justifiable, supported by human agents' capabilities and purposes. This article also proposes that it is possible to narrate, using such categories of meaning grounding, how different agents enact art, that is, give meaning and act upon art in different circumstances. Finally, I offer some examples about how the model can be used in real art contexts. The objective of this narrative-enactive approach, even though it offers a limited and edited focus, is to offer an orderly and comprehensible method to explain the dynamic nature of art meaning and how biologic, individual and collective grounding and purposes intertwine.