Tecnologia e Ciência Educacional (Brazil)

In the instrumental record, eastern South America (ESA) is marked by severe droughts that triggered substantial human displacements, making it a hotspot for climate-society interactions. It is not clear, however, if past centennial-scale changes in climate like the Little Ice Age (LIA) also controlled human occupation. Here we present a precipitation reconstruction for ESA covering the last two millennia, based on the thermoluminescence sensitivity of the 110°C peak of quartz (TL sensitivity) from a marine sediment core collected off ESA. TL sensitivity serves as a proxy for sediment provenance in the region, which is controlled by rainfall patterns. Our data show that centennial-scale changes in precipitation in semi-arid northern ESA varied according to shifts in the Intertropical Convergence Zone (ITCZ). During the LIA, when the ITCZ moved southward, our core shows lower TL sensitivity values, suggesting wetter conditions over northern ESA. Importantly, these wetter intervals align with peaks in ages of archaeological remains found in the region. Concurrently, hydroclimate and archaeological records point to a drier and less populated southern ESA. Our data indicate a temporal correspondence between changes in hydroclimate and human migration from the southern to the nowadays semi-arid northern ESA. We suggest that improved environmental conditions facilitated settlement in otherwise semi-arid landscapes. By integrating marine sediment proxies and archaeological evidence, this study provides support for a climatic influence on human occupation patterns in ESA, particularly during the LIA. It also highlights the utility of luminescence-based techniques in paleoclimate reconstructions from fluvially influenced marine archives.

This note empirically examines the existence of common trend between the bilateral real exchange rates of Australia and New Zealand with two of their major trading partners, Japan and the United States, as base countries. Results from Johansen cointegration analysis show that New Zealand and Australia bilateral real exchange rates with Japan as the base country share a common stochastic trend, which can be interpreted in terms of an optimum currency area. This no longer holds should the United States be selected as the base country. This might shed light on the impact of comparative advantage in the regional trade among Australia, New Zealand, and Japan in a liberalized environment.

Contexto: Na educação, as tecnologias digitais têm elevada utilidade. Entre outros, o design emocional é central na satisfação do utilizador. Objetivos: Identificar as contribuições do design emocional na tecnologia educacional para saúde e enfermagem. Metodologia: Revisão integrativa nas bases LILACS, MEDLINE, PsycINFO e IndexPsi, de 2001 a 2011, procurando publicações sobre design, emoção, tecnologia educacional, saúde e enfermagem. Construído o protocolo da revisão e realizada a categorização temática. Resultados: Pelos critérios de inclusão e exclusão foram considerados 5 estudos primários, em que 40% destes foram classificados como muito bons e 60% bons, de acordo com a capacidade de responder à questão norteadora. A maioria apresenta baixo nível de evidência. Da metassíntese qualitativa levantamos que o design da tecnologia auxilia na motivação do estudante e feedback da aprendizagem, possibilita a interação entre os estudantes e mediadores da aprendizagem e potencializa a ligação entre teoria e prática. Conclusão: Apesar de importante, a análise e discussão acerca do design emocional na tecnologia educacional é incipiente na saúde e enfermagem, sendo fundamental mais investigação.

Nessa tese sero apresentadas medidas de anisotropia azimutal elptica de eltrons de decaimentos de quarks pesados feitas no experimento de coliso de ons pesados ALICE (A Large Ion Collider Experiment, em ingls). As medidas foram obtidas em colises de Pb-Pb com energia de centro de massa por par de nucleons ( s NN ) igual a 2.76 TeV com o colisor de hadrons LHC (Large Hadron Collider, em ingls).

As Augmentative and Alternative Communication (AAC) is a feature of Assistive Technology (AT) used by occupational therapists with people with severe disorders in oral and written communication, we tried to select papers on the subject in the country to verify the scientific production in the area of Occupational Therapy. The following sites were consulted to search