0-Dimensional Persistent Homology Analysis Implementation in Resource-Scarce Embedded Systems.

Persistent Homology (PH) analysis is a powerful tool for understanding many relevant topological features from a given dataset. PH allows finding clusters, noise, and relevant connections in the dataset. Therefore, it can provide a better view of the problem and a way of perceiving if a given dataset is equal to another, if a given sample is relevant, and how the samples occupy the feature space. However, PH involves reducing the problem to its simplicial complex space, which is computationally expensive and implementing PH in such Resource-Scarce Embedded Systems (RSES) is an essential add-on for them. However, due to its complexity, implementing PH in such tiny devices is considerably complicated due to the lack of memory and processing power. The following paper shows the implementation of 0-Dimensional Persistent Homology Analysis in a set of well-known RSES, using a technique that reduces the memory footprint and processing power needs of the 0-Dimensional PH algorithm. The results are positive and show that RSES can be equipped with this real-time data analysis tool.

Innovative Visualizations Shed Light on Avian Nocturnal Migration.

Globally, billions of flying animals undergo seasonal migrations, many of which occur at night. The temporal and spatial scales at which migrations occur and our inability to directly observe these nocturnal movements makes monitoring and characterizing this critical period in migratory animals' life cycles difficult. Remote sensing, therefore, has played an important role in our understanding of large-scale nocturnal bird migrations. Weather surveillance radar networks in Europe and North America have great potential for long-term low-cost monitoring of bird migration at scales that have previously been impossible to achieve. Such long-term monitoring, however, poses a number of challenges for the ornithological and ecological communities: how does one take advantage of this vast data resource, integrate information across multiple sensors and large spatial and temporal scales, and visually represent the data for interpretation and dissemination, considering the dynamic nature of migration? We assembled an interdisciplinary team of ecologists, meteorologists, computer scientists, and graphic designers to develop two different flow visualizations, which are interactive and open source, in order to create novel representations of broad-front nocturnal bird migration to address a primary impediment to long-term, large-scale nocturnal migration monitoring. We have applied these visualization techniques to mass bird migration events recorded by two different weather surveillance radar networks covering regions in Europe and North America. These applications show the flexibility and portability of such an approach. The visualizations provide an intuitive representation of the scale and dynamics of these complex systems, are easily accessible for a broad interest group, and are biologically insightful. Additionally, they facilitate fundamental ecological research, conservation, mitigation of human-wildlife conflicts, improvement of meteorological products, and public outreach, education, and engagement.

A lei autoral brasileira como elemento de restrição à eficácia do direito humano à educação / La ley de autor brasileña como elemento de restricción a la eficacia del derecho humano a la educación / Brazilian copyright law and how it restricts the efficiency of the human right to education

Ao longo de todo o século XX, o desenvolvimento das tecnologias foi gradativamente diminuindo a distância entre o homem, a obra cultural e a propriedade intelectual; o ápice foi o advento da internet, em meados dos anos 90. O acesso a obras do mundo inteiro facilita enormemente as possibilidades de disseminação de conhecimento e de matéria-prima para a educação e, pelo menos, ajuda também a construir uma comunidade global. No entanto, os titulares de bens intelectuais direitos autorais, marcas, patentes não podem utilizá-los indiscriminadamente. Desse modo, em linhas gerais, o que se pretende analisar no presente artigo é o sério risco que a efetivação do direito humano à educação corre com a presente estrutura de direitos autorais e com o uso inadequado da tecnologia. Tomaremos como base a lei brasileira, mas diversas considerações serão úteis para compreendermos o sistema de outros países, assim como para a elaboração de objetivos a serem perseguidos a respeito do direito autoral.

Throughout the 20th century, the development of new technologies gradually narrowed the distance between man, cultural work and intellectual property; this peaked with the advent of the internet in the mid-90s. Access to works from all over the world has enormously increased the possibilities of disseminating knowledge and the materials for education and, at the very least, has also helped form a global community. Nevertheless, the owners of intellectual property copyrights, brands, patents may not use them indiscriminately. Therefore, in general terms, what I propose to analyze in this article is how the current copyright structure and the improper use of technology poses a serious threat to the implementation of the human right to education. I shall draw primarily on Brazilian law, although some comments will be useful to understand the system in other countries, as well as to draft the copyright goals that need to be pursued.

A lo largo de todo el siglo XX, el desarrollo de las tecnologías fue gradualmente disminuyendo la distancia entre el hombre, la obra cultural y la propiedad intelectual; el ápice fue el advenimiento de internet, a mediados de los años 90. El acceso a obras del mundo entero facilita enormemente las posibilidades de diseminación de conocimiento y de materia prima para la educación y también ayuda a construir una comunidad global. Sin embargo, los titulares de bienes intelectuales derechos de autor, marcas y patentes no pueden utilizarlos indiscriminadamente. De ese modo, en líneas generales, lo que se pretende analizar en el presente artículo es el serio riesgo que corre la efectivación del derecho humano a la educación con la presente estructura de derechos de autor y con el uso inadecuado de la tecnología. Tomaremos como base la ley brasileña, pero serán útiles algunas consideraciones para comprender el sistema de otros países, así como también para la elaboración de objetivos a ser perseguidos sobre el derecho de autor.

Manual de primeiros socorros nos acidentes do trabalho

Os primeiros socorros seräo prestados no local da ocorrência, até a chegada de um médico, e se destinam a salvar uma vida ameaçada e a evitar que se agravem os males de que a vítima está acometida. Qualquer pessoa treinada poderá prstar os primeiros socorros, conduzindo-se com serenidade, compreençäo e confiança