Using artificial intelligence to support emerging networks management approaches

In emergent networks such as Internet of Things (IoT) and 5G applications, network traffic estimation is of great importance to forecast impacts on resource allocation that can influence the quality of service. Besides, controlling the network delay caused with route selection is still a notable challenge, owing to the high mobility of the devices. To analyse the trade-off between traffic forecasting accuracy and the complexity of artificial intelligence models used in this scenario, this work first evaluates the behavior of several traffic load forecasting models in a resource sharing environment. Moreover, in order to alleviate the routing problem in highly dynamic ad-hoc networks, this work also proposes a machine-learning-based routing scheme to reduce network delay in the high-mobility scenarios of flying ad-hoc networks, entitled Q-FANET. The performance of this new algorithm is compared with other methods using the WSNet simulator. With the obtained complexity analysis and the performed simulations, on one hand the best traffic load forecast model can be chosen, and on the other, the proposed routing solution presents lower delay, higher packet delivery ratio and lower jitter in highly dynamic networks than existing state-of-art methods

Mundos em miniatura: aproximação a alguns aspectos da cartografia portuguesa do Brasil (séculos XVI a XVIII)

This paper discusses the challenges of "miniaturizing" the world in Portuguese cartography at the dawn of the Modern Age. It draws attention to the process of amassing experience and geographic knowledge, and their deployment in the cartographic representations of Brazil throughout the first three centuries of its colonization

ATLANTIC EPIPHYTES: a data set of vascular and non-vascular epiphyte plants and lichens from the Atlantic Forest

Epiphytes are hyper-diverse and one of the frequently undervalued life forms in plant surveys and biodiversity inventories. Epiphytes of the Atlantic Forest, one of the most endangered ecosystems in the world, have high endemism and radiated recently in the Pliocene. We aimed to (1) compile an extensive Atlantic Forest data set on vascular, non-vascular plants (including hemiepiphytes), and lichen epiphyte species occurrence and abundance; (2) describe the epiphyte distribution in the Atlantic Forest, in order to indicate future sampling efforts. Our work presents the first epiphyte data set with information on abundance and occurrence of epiphyte phorophyte species. All data compiled here come from three main sources provided by the authors: published sources (comprising peer-reviewed articles, books, and theses), unpublished data, and herbarium data. We compiled a data set composed of 2,095 species, from 89,270 holo/hemiepiphyte records, in the Atlantic Forest of Brazil, Argentina, Paraguay, and Uruguay, recorded from 1824 to early 2018. Most of the records were from qualitative data (occurrence only, 88%), well distributed throughout the Atlantic Forest. For quantitative records, the most common sampling method was individual trees (71%), followed by plot sampling (19%), and transect sampling (10%). Angiosperms (81%) were the most frequently registered group, and Bromeliaceae and Orchidaceae were the families with the greatest number of records (27,272 and 21,945, respectively). Ferns and Lycophytes presented fewer records than Angiosperms, and Polypodiaceae were the most recorded family, and more concentrated in the Southern and Southeastern regions. Data on non-vascular plants and lichens were scarce, with a few disjunct records concentrated in the Northeastern region of the Atlantic Forest. For all non-vascular plant records, Lejeuneaceae, a family of liverworts, was the most recorded family. We hope that our effort to organize scattered epiphyte data help advance the knowledge of epiphyte ecology, as well as our understanding of macroecological and biogeographical patterns in the Atlantic Forest. No copyright restrictions are associated with the data set. Please cite this Ecology Data Paper if the data are used in publication and teaching events. © 2019 The Authors. Ecology © 2019 The Ecological Society of Americ

Um estudo da visualização imersiva para manipulação de moléculas

A visualização de dados de forma imersiva utiliza equipamentos de realidade virtual que possibilitam ao usuário ver e interagir com entidades em um ambiente virtual. A área teve um grande desenvolvimento nas últimas décadas devido ao aumento na quantidade de informação a se manipular e ao crescimento tecnológico. No contexto de visualização e interação com moléculas, o apoio de um ambiente virtual em 3D potencialmente auxilia na compreensão e manipulação de dados e estruturas que, em outro caso, poderiam demandar mais esforço para serem interpretados de forma convencional. O objetivo do seguinte trabalho é estudar os benefícios da manipulação de moléculas em ambientes virtuais através do uso de equipamentos de realidade virtual como Head-Mounted Displays e interfaces 3D. Sendo assim, primeiramente desenvolvemos um ambiente para visualizar e manipular moléculas. A fim de testar e avaliar as vantagens da abordagem imersiva, realizamos um experimento comparativo com usuários utilizando dois tipo de abordagem (não-imersiva e imersiva) com o propósito de interagir com moléculas. Por fim, analisamos e discutimos os resultados obtidos a partir dos testes, os apresentando de forma a demonstrar os benefícios de um ambiente de visualização imersiva para a manipulação de moléculas.Immersive data visualization uses virtual reality devices that enable the use to see and interact with elements in a virtual environment. The area had a great development in the last decades due to the increase of the quantity of information to manipulate and the technological growing. In the context of visualization and interaction with molecules, the backup of a virtual environment in 3D potentially helps on the understanding of data and structure manipulation that, in other case, would demand too much effort to be interpreted in a conventional way. The objective of the following work it is to study the benefits of molecule manipulation in virtual environments through the use of virtual reality equipment such as Head-Mounted Displays and 3D interfaces. Thus, first we developed an environment to visualize and manipulate molecules. To test it and evaluate the advantages of the immersive approach, we created an comparative experiment with users using two kinds of approach (non-immersive and immersive) with the purpose of interact with molecules. Last, we analised and discussed the results obtained from these tests, presenting them in a way to demonstrate the benefits of an immersive visualization environment for molecule manipulation

Um estudo da visualização imersiva para manipulação de moléculas

A visualização de dados de forma imersiva utiliza equipamentos de realidade virtual que possibilitam ao usuário ver e interagir com entidades em um ambiente virtual. A área teve um grande desenvolvimento nas últimas décadas devido ao aumento na quantidade de informação a se manipular e ao crescimento tecnológico. No contexto de visualização e interação com moléculas, o apoio de um ambiente virtual em 3D potencialmente auxilia na compreensão e manipulação de dados e estruturas que, em outro caso, poderiam demandar mais esforço para serem interpretados de forma convencional. O objetivo do seguinte trabalho é estudar os benefícios da manipulação de moléculas em ambientes virtuais através do uso de equipamentos de realidade virtual como Head-Mounted Displays e interfaces 3D. Sendo assim, primeiramente desenvolvemos um ambiente para visualizar e manipular moléculas. A fim de testar e avaliar as vantagens da abordagem imersiva, realizamos um experimento comparativo com usuários utilizando dois tipo de abordagem (não-imersiva e imersiva) com o propósito de interagir com moléculas. Por fim, analisamos e discutimos os resultados obtidos a partir dos testes, os apresentando de forma a demonstrar os benefícios de um ambiente de visualização imersiva para a manipulação de moléculas.Immersive data visualization uses virtual reality devices that enable the use to see and interact with elements in a virtual environment. The area had a great development in the last decades due to the increase of the quantity of information to manipulate and the technological growing. In the context of visualization and interaction with molecules, the backup of a virtual environment in 3D potentially helps on the understanding of data and structure manipulation that, in other case, would demand too much effort to be interpreted in a conventional way. The objective of the following work it is to study the benefits of molecule manipulation in virtual environments through the use of virtual reality equipment such as Head-Mounted Displays and 3D interfaces. Thus, first we developed an environment to visualize and manipulate molecules. To test it and evaluate the advantages of the immersive approach, we created an comparative experiment with users using two kinds of approach (non-immersive and immersive) with the purpose of interact with molecules. Last, we analised and discussed the results obtained from these tests, presenting them in a way to demonstrate the benefits of an immersive visualization environment for molecule manipulation

Using artificial intelligence to support emerging networks management approaches

In emergent networks such as Internet of Things (IoT) and 5G applications, network traffic estimation is of great importance to forecast impacts on resource allocation that can influence the quality of service. Besides, controlling the network delay caused with route selection is still a notable challenge, owing to the high mobility of the devices. To analyse the trade-off between traffic forecasting accuracy and the complexity of artificial intelligence models used in this scenario, this work first evaluates the behavior of several traffic load forecasting models in a resource sharing environment. Moreover, in order to alleviate the routing problem in highly dynamic ad-hoc networks, this work also proposes a machine-learning-based routing scheme to reduce network delay in the high-mobility scenarios of flying ad-hoc networks, entitled Q-FANET. The performance of this new algorithm is compared with other methods using the WSNet simulator. With the obtained complexity analysis and the performed simulations, on one hand the best traffic load forecast model can be chosen, and on the other, the proposed routing solution presents lower delay, higher packet delivery ratio and lower jitter in highly dynamic networks than existing state-of-art methods

Das caixas da casa colonial às arcas do Museu Paulista

A partir de uma pesquisa desenvolvida no Museu Paulista da Universidade de São Paulo sobre o espaço doméstico e a cultura material em São Paulo colonial, buscaremos problematizar o ofício do historiador ao lidar com documentos de natureza diversa. Comentaremos como se estabeleceu e se conformou, ao longo do trabalho, um diálogo crítico entre as fontes tridimensionais - as peças do acervo - e as fontes textuais produzidas no contexto de origem dos artefatos domésticos - sobretudo inventários. Com base na catalogação de acervo, pretendemos discutir situações de aproximação e incompatibilidade colocadas, muitas vezes, entre os termos utilizados pelos coevos para designar determinadas peças de mobiliário nos séculos XVIII e XIX e a classificação das peças em instituições museológicas. Para tanto, jogaremos luzes sobre caixas e arcas, pois esses móveis de conter e de guardar eram onipresentes nas casas setecentistas do império português.This paper analyzes the way historians deal with different types of historical documents (considering their origins) based on a research conducted at the Paulista Museum of the University of São Paulo on the theme of domestic space and material culture in colonial São Paulo. We will discuss how a critical dialogue was established between the tridimensional sources - the pieces of the collection - and the textual sources produced in the original context of the domestic artifacts - especially inventories. Based on the cataloging of the collection, we analyze situations of approximation and incompatibility often created by the use of the terms by the contemporaries to designate certain pieces of furniture in the 18th and 19th centuries and the terms used in the process of pieces classification in museological institutions. In order to do so, we will shed light on boxes and chests, because these kind of furniture to contain and store were ubiquitous in the 18th century houses of the Portuguese Empire