Relato pathémico: aproximación desde el lenguaje visual del libro álbum Akim corre

“Es justamente en esta problemática que se desdobla la presente investigación: el acto de mirar y entender por qué se detona una interpretación sobre otra y en cuáles son los elementos que propician dicha interacción. El texto que aquí se analiza y decodifica es el libro-álbum de Akim corre, que en una primera instancia se definirá como un texto ilustrado para niños que se caracteriza por usar a la ilustración como principal recurso narrativo y donde existe una interrelación de códigos entre texto e imagen (Hanán, 2021). De esta forma y tomando en cuenta que todo texto tiene múltiples dimensiones de significación, la dimensión de análisis que aquí se privilegiará es la noción pathémica, es decir, aquella que busca detonar emociones o, en palabras de Bally, la dimensión del lenguaje expresivo, transmisor del pensamiento afectivo (Bally en Puig, 2008). Para delimitar esta noción, es importante retomar a Maturana (1990:5) quien afirma que las emociones no son lo que corrientemente llamamos sentimientos ya que, desde el punto de vista biológico, lo que se connota cuando se habla de emociones son disposiciones corporales dinámicas que definen los distintos dominios de acción en los cuales nos movemos”

El conocimiento didáctico de los usos de los números: un estudio de caso en educación preescolar

La presente investigación tuvo como objetivo describir y caracterizar el Conocimiento Didáctico de los Usos de los Números (CDUN) en una docente de Educación Preescolar y comprender el vínculo de éste con su práctica educativa, para ofrecer elementos a considerar dentro de su formación y capacitación docente. El trabajo se fundamenta en el Enfoque Ontosemiótico de la Cognición Matemática propuesto por Godino y colaboradores, modelo teórico sobre el conocimiento didáctico matemático que aporta distintos niveles de análisis, que ofrecen mayor sistematicidad y comprensión del tema. Se utilizó una aproximación cualitativa de estudio de caso. Las fuentes para obtener la información fueron: revisión de planeaciones, videograbaciones de clases y entrevistas con la docente. Los resultados arrojan que la docente no tiene claridad sobre los distintos usos de los números y cómo se desarrollan en los niños, por lo tanto, no logra establecer objetivos de aprendizaje claros y precisos, ni resolver conflictos cognitivos en los infantes, utiliza material concreto, pero éste no resulta un apoyo didáctico. El CDUN de la docente carece de elementos que le impiden potencializar las situaciones didácticas y lograr los objetivos que se plantea, por lo que resulta fundamental considerarlos dentro de una formación docente en servicio

Multi-decadal changes in tundra environments and ecosystems: Synthesis of the International Polar Year-Back to the Future Project (IPY-BTF).

Understanding the responses of tundra systems to global change has global implications. Most tundra regions lack sustained environmental monitoring and one of the only ways to document multi-decadal change is to resample historic research sites. The International Polar Year (IPY) provided a unique opportunity for such research through the Back to the Future (BTF) project (IPY project #512). This article synthesizes the results from 13 papers within this Ambio Special Issue. Abiotic changes include glacial recession in the Altai Mountains, Russia; increased snow depth and hardness, permafrost warming, and increased growing season length in sub-arctic Sweden; drying of ponds in Greenland; increased nutrient availability in Alaskan tundra ponds, and warming at most locations studied. Biotic changes ranged from relatively minor plant community change at two sites in Greenland to moderate change in the Yukon, and to dramatic increases in shrub and tree density on Herschel Island, and in sub-arctic Sweden. The population of geese tripled at one site in northeast Greenland where biomass in non-grazed plots doubled. A model parameterized using results from a BTF study forecasts substantial declines in all snowbeds and increases in shrub tundra on Niwot Ridge, Colorado over the next century. In general, results support and provide improved capacities for validating experimental manipulation, remote sensing, and modeling studies

Miocene to present oceanographic variability in the Scotia Sea and Antarctic Ice Sheet dynamics: Insight from revised seismic-stratigraphy following IODP Expedition 382

Scotia Sea and the Drake Passage is key towards understanding the development of modern oceanic circulation patterns and their implications for ice sheet growth and decay. The sedimentary record of the southern Scotia Sea basins documents the regional tectonic, oceanographic and climatic evolution since the Eocene. However, a lack of accurate age estimations has prevented the calibration of the reconstructed history. The upper sedimentary record of the Scotia Sea was scientifically drilled for the first time in 2019 during International Ocean Discovery Program (IODP) Expedition 382, recovering sediments down to ∼643 and 676 m below sea floor in the Dove and Pirie basins respectively. Here, we report newly acquired high resolution physical properties data and the first accurate age constraints for the seismic sequences of the upper sedimentary record of the Scotia Sea to the late Miocene. The drilled record contains four basin-wide reflectors – Reflector-c, -b, -a and -a' previously estimated to be ∼12.6 Ma, ∼6.4 Ma, ∼3.8 Ma and ∼2.6 Ma, respectively. By extrapolating our new Scotia Sea age model to previous morpho-structural and seismic-stratigraphic analyses of the wider region we found, however, that the four discontinuities drilled are much younger than previously thought. Reflector-c actually formed before 8.4 Ma, Reflector-b at ∼4.5/3.7 Ma, Reflector-a at ∼1.7 Ma, and Reflector-a' at ∼0.4 Ma. Our updated age model of these discontinuities has major implications for their correlation with regional tectonic, oceanographic and cryospheric events. According to our results, the outflow of Antarctic Bottom Water to northern latitudes controlled the Antarctic Circumpolar Current flow from late Miocene. Subsequent variability of the Antarctic ice sheets has influenced the oceanic circulation pattern linked to major global climatic changes during early Pliocene, Mid-Pleistocene and the Marine Isotope Stage 11

Ancient marine sediment DNA reveals diatom transition in Antarctica

Antarctica is one of the most vulnerable regions to climate change on Earth and studying the past and present responses of this polar marine ecosystem to environmental change is a matter of urgency. Sedimentary ancient DNA (sedaDNA) analysis can provide such insights into past ecosystem-wide changes. Here we present authenticated (through extensive contamination control and sedaDNA damage analysis) metagenomic marine eukaryote sedaDNA from the Scotia Sea region acquired during IODP Expedition 382. We also provide a marine eukaryote sedaDNA record of ~1 Mio. years and diatom and chlorophyte sedaDNA dating back to ~540 ka (using taxonomic marker genes SSU, LSU, psbO). We find evidence of warm phases being associated with high relative diatom abundance, and a marked transition from diatoms comprising <10% of all eukaryotes prior to ~14.5 ka, to ~50% after this time, i.e., following Meltwater Pulse 1A, alongside a composition change from sea-ice to open-ocean species. Our study demonstrates that sedaDNA tools can be expanded to hundreds of thousands of years, opening the pathway to the study of ecosystem-wide marine shifts and paleo-productivity phases throughout multiple glacial-interglacial cycles

Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years

The Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report a high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia. Our deep-ocean records cover the last 1.5 Ma, thus doubling that from Antarctic ice-cores. We find a 5 to 15-fold increase in dust deposition during glacials and a 2 to 5-fold increase in biogenic silica deposition, reflecting higher ocean productivity during interglacials. This antiphasing persisted throughout the last 25 glacial cycles. Dust deposition became more pronounced across the Mid-Pleistocene Transition (MPT) in the Southern Hemisphere, with an abrupt shift suggesting more severe glaciations since ~0.9 Ma. Productivity was intermediate pre-MPT, lowest during the MPT and highest since 0.4 Ma. Generally, glacials experienced extended sea-ice cover, reduced bottom-water export and Weddell Gyre dynamics, which helped lower atmospheric CO2 levels

Día II

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Are limited editions limited to products?

Purpose: The aim of this paper is to explore whether service can be implemented as limited edition in order to strengthen the brand and to drive business. Methodology/Approach: This research is based on a qualitative approach with a multi case study analyzing Visit Sweden, Finnair and Lund University. Each brand has implemented a limited service of own kind this year. Findings: The research showcases the potential of service as limited edition, and it proves that limited services can valuably shape a brand and its image. Limited services create an urgent purchase incentive that rests upon the scarcity mechanism. Research limitations/implications: This paper introduces services as limited edition with a focus on raising awareness for the topic. As such, further research must be conducted with more cases in other industries, comparative studies towards limited products, and in-depth analyses that evaluate the phenomenon step by step. Managerial Implications: Managers may find this paper useful in order to conduct persuasive marketing with limited services as alternative strategy and unique business measures compared to other sales promotion techniques. Originality/Value: This paper addresses the existent gap between limited editions and service that can be noticed in both business and research areas

Innovación Tecnológica, Derechos Humanos y las Tecnologías de la Información y la Comunicación (tic) para el Beneficio de los Grupos Vulnerables.

Documento del Cuarto Foro Internacional de Derechos Humanos y Tecnologías de la Información y la Comunicación