SRML: Space Radio Machine Learning

Space-based communications systems to be employed by future artificial satellites, or spacecraft during exploration missions, can potentially benefit from software-defined radio adaptation capabilities. Multiple communication requirements could potentially compete for radio resources, whose availability of which may vary during the spacecraft\u27s operational life span. Electronic components are prone to failure, and new instructions will eventually be received through software updates. Consequently, these changes may require a whole new set of near-optimal combination of parameters to be derived on-the-fly without instantaneous human interaction or even without a human in-the-loop. Thus, achieving a sufficiently set of radio parameters can be challenging, especially when the communication channels change dynamically due to orbital dynamics as well as atmospheric and space weather-related impairments. This dissertation presents an analysis and discussion regarding novel algorithms proposed in order to enable a cognition control layer for adaptive communication systems operating in space using an architecture that merges machine learning techniques employing wireless communication principles. The proposed cognitive engine proof-of-concept reasons over time through an efficient accumulated learning process. An implementation of the conceptual design is expected to be delivered to the SDR system located on the International Space Station as part of an experimental program. To support the proposed cognitive engine algorithm development, more realistic satellite-based communications channels are proposed along with rain attenuation synthesizers for LEO orbits, channel state detection algorithms, and multipath coefficients function of the reflector\u27s electrical characteristics. The achieved performance of the proposed solutions are compared with the state-of-the-art, and novel performance benchmarks are provided for future research to reference

A fruticultura como alternativa para a produção familiar no âmbito do Pronaf nos municípios de Campos dos Goytacazes e São Francisco do Itabapoana — RJ.

O trabalho analisa a importância do cultivo de frutas como alternativa para o aumento de renda da agricultura familiar, no contexto dos financiamentos concedidos pelo PRONAF. Os resultados evidenciaram que o recurso financeiro foi a variável que mais limitou a escolha dos agricultores. Maracujá, goiaba e pinha foram identificadas como as melhores alternativas econômicas para os produtores familiares da região. A análise permitiu concluir que a concessão do crédito, pelo PRONAF, contribui para a melhor utilização dos recursos, para a obtenção de maior renda, bem como para a geração de empregos

SÍNDROME DE ANSIEDADE DE SEPARAÇÃO ANIMAL NA POPULAÇÃO CANINA DE TERESINA/PIAUÍ, BRASIL

Animal Separation Anxiety Syndrome (ASAS) in dogs is a common behavioral change nowadays, resulting from new lifestyle and social changes. The signs of the syndrome are excessive vocalization, destruction of objects, and urination and defecation out of the determined place. Thus, this study aimed to identify animals with the syndrome and its signs, as well as evaluate the knowledge of the tutors about behavioral disorders in animals. The research was carried out at a Veterinary Teaching Hospital with a canine population of 131 patients. Dogs were evaluated without distinction of breed, sex, size, and age through information provided by the owners, who were asked through a questionnaire developed for the study. By evaluating the 131 answered questionnaires, 43.51% of animals were positive for ASAS. Among the 57 ASAS-positive animals, 28 were female, and 29 were male. A total of 12.28% of the females were castrated, while for the males, the castrated corresponded to 5.26%. The main signs observed were excessive vocalization (66.66%), destructive behavior (57.89%), and signs of depression in the absence of the tutor (35.08%). It was stated that 85.97% of SASA-positive animal owners searched for a veterinarian to treat behavioral problems and that 29.82% of SASA-positive animal owners were aware of the existence of the syndrome. It was concluded that SASA is common in dogs among the assessed clients. Due to the lack of knowledge of tutors about behavioral disorders, it is suggested that veterinarians address the subject more frequently, emphasizing its consequences and the need for treatment.A Síndrome de Ansiedade de Separação Animal (SASA) em cães é uma alteração comportamental comum na atualidade, decorrente do novo estilo de vida e de modificações sociais. Os sinais que compõem a síndrome são vocalização excessiva, destruição de objetos e micção e defecação fora do lugar determinado. Desta forma, o objetivo deste trabalho foi identificar animais portadores da síndrome e seus sinais, assim como avaliar o conhecimento dos tutores sobre os distúrbios comportamentais nos animais. A pesquisa foi realizada em um Hospital Veterinário Universitário, com uma população canina formada por 131 pacientes. Os cães foram avaliados sem distinção de raça, sexo, tamanho e idade por meio de informações fornecidas pelos proprietários, que foram indagados através de um questionário desenvolvido para o estudo. Ao avaliar os 131 questionários respondidos, observou 43,51% de animais positivos para SASA. Dentre os 57 animais positivos para SASA, 28 eram fêmeas e 29 machos. Um total de 12,28% das fêmeas foram castradas, enquanto para os machos, os castrados correspondiam a 5,26%. Os principais sinais observados foram vocalização excessiva (66,66%), comportamento destrutivo (57,89%) e sinais de depressão na ausência do tutor (35,08%). Afirmou-se que 85,97% dos tutores de animais positivos para SASA procuraram um veterinário para tratar problemas comportamentais e que 29,82% possuíam conhecimento sobre a existência da síndrome. Conclui-se que a SASA é comum em cães entre os clientes avaliados. Devido ao desconhecimento dos tutores sobre distúrbios comportamentais, sugere-se que os médicos veterinários abordem o assunto com mais frequência, enfatizando suas consequências e a necessidade de tratamento

Análisis Sedimentológico y geomorfológico de áreas lacustres en la Península Fildes, Isla Rey Jorge, Antártica Marítima

Geomorphological features and sedimentary characteristics are analized from five sets of shallow sediment cores collected in lakes in the Fildes Peninsula, King George Island. The geomorphology of the area was observed and sediments samples were obtained at field activities during the XXXI Brazilian Antarctic Operation (March-April/2013). Biogeochemical characteristics, physical parameters, mineralogical composition, particle size distribution, macroscopic characteristics of the sediments and satellite images were analized. Preliminary results indicate climatic and environmental changes in north-south transect of the peninsula. The mineralogical composition is associated with geological structure of the area, where basaltic rocks predominate. The particle size variation reflects different sediment source environments. Macroscopic analysis and mineralogical composition variation reflect the action of weathering along the peninsula. The sediments also have potential mineralization and subsequent release of greenhouse gases. A preliminary map of the classification of the lakes is presented. In addition, it was identified that wetland sediment presents methane production rates (CH4) about 40 times larger and more sensitive to the effect of global warming compared to lake sediment. Subpolar aquatic ecosystems sediments from Maritime Antarctica can be a preferential site for the effects of climate variability

O acesso para cadeirantes em academias de ginástica: um estudo realizado na Zona Oeste do Rio de Janeiro

O objetivo foi identificar o grau de acessibilidade em academias de ginástica, localizadas na Zona Oeste da cidade do Rio de Janeiro. Para tanto, 15 academias foram observadas. Com os dados coletados estandardizados foi possível perceber que o grau satisfatório de acessibilidade não foi encontrado em nenhuma academia, pois somente 4 academias têm banheiros adaptados, 3 com rota acessível, 2 com rampas de acesso e 1 com elevador com painel em braile. A pesquisa aponta a necessidade de se repensar o ambiente arquitetônico das academias de ginástica na região da Zona Oeste do Rio de Janeiro para garantir a acessibilidade de todos

A conserved karyotype? Chromosomal rearrangements in Charadrius collaris detected by BAC-FISH

Charadriidae comprise 142 valid species and the most recent checklist for the occurrence of this family in Brazil describes 11 species. There are few chromosomal studies in Charadriidae, most of them using a conventional approach. In Charadrius, only five species had their karyotypes described by classical cytogenetics, of which four have 2n = 76 (C. hiaticula, C. dubius, C. vociferou and C. collaris) and one 2n = 78 (C. alexandrinus alexandrinus). Among these species, only Charadrius collaris had the karyotype studied by chromosome painting, which allowed the identification of chromosomal homeologies with the karyotypes of Gallus gallus (GGA) and Burhinus oedicnemus (BOE). According to the literature, studies performed with BAC-FISH using probes from Gallus gallus and Taeniopygia guttata (TGU) libraries have shown interactions between macro and microchromosomes and micro inversions in chromosomes previously considered conserved. Other studies have shown the fusion of several microchromosomes, forming new macrochromosomes, leading to a decrease in the 2n of some species. The present study aims to deepen the chromosomal information in Charadrius collaris through the application of BAC-FISH with probes from the GGA and TGU libraries, in order to investigate possible rearrangements within the apparently conserved karyotype of this species, and thus better clarify the evolutionary history of the species. Charadrius collaris presented 2n = 76 and fundamental number (FN) equal to 94. Comparative mapping of BAC probes from GGA and TGU in Charadrius collaris revealed hybridization signals from 26 macrochromosome probes. Probes from microchromosomes 9 to 28 of GGA were also used and revealed 31 hybridization signals. The karyotype is well conserved, but it contains a paracentric and a pericentric inversion on the CCO1 chromosome, a paracentric and a pericentric inversion on the CCO4 and the separation of GGA4 into CCO4 and CCO8, demonstrating that the BAC-FISH approach allows for greater data resolution. More studies are needed to improve the understanding of chromosomal evolution within the order Charadriiformes and thus clarify whether these characteristics demonstrated here are specific traits for Charadrius collaris or if other species share these characteristics

Cenários para a matriz de geração de eletricidade do Ceará em 2050: pt

Based on the worldwide proposition of energy matrix scenarios for 2050, the objective of this article is to present scenarios of electricity generation for Ceará in 2050, showing the participation of sources already used in the state's electric matrix and adding new ones. The article proposes three scenarios: a conservative one, where the present proportion of electricity generation sources of the state is maintained, a transitional one, with 50% of electricity generation from non-renewable sources and the other 50% from renewable sources, and 100% renewable, without the use of fossil or nuclear fuels. Estimates for 2050 in the state are obtained by extrapolating generation data from 2011 to 2017, reaching an estimated 94,775 GWh. In the conservative scenario, it is observed that half of this generation is made by thermoelectric plants and the other half by wind farms. In the transition scenario, dominated by the use of natural gas, the exponential growth of photovoltaic generation stands out. In the 100% renewable scenario, dominated by wind farms, in addition to the similar growth of photovoltaic generation as in the transition scenario, we highlight the use of urban solid waste and solar thermal concentration plants.A partir da proposição de cenários de matrizes energéticas a nível mundial para 2050, o objetivo do presente artigo é apresentar cenários de geração de eletricidade para o estado do Ceará em 2050, mostrando a participação de fontes já usadas na matriz elétrica do estado e acrescentando novas. O artigo propõe três cenários: um conservador, onde é mantida a proporção atual das fontes de geração de eletricidade do estado, um de transição, com 50% da geração de energia elétrica oriunda de fontes não renováveis e os outros 50% provenientes de fontes renováveis, e um 100% renovável, sem o uso de combustíveis fósseis ou nuclear. As estimativas para 2050 no estado são obtidas através de extrapolação de dados de geração de 2011 a 2017, alcançando um valor estimado de 94.775 GWh. No cenário conservador, observa-se que metade dessa geração é realizada por termelétricas e a outra metade por parques eólicos. No cenário de transição, dominado pelo gás natural, destaca-se o crescimento exponencial da geração fotovoltaica. No cenário 100% renovável, dominado por parques eólicos, além do crescimento semelhante da geração fotovoltaica como no cenário de transição, destaca-se a utilização dos resíduos sólidos urbanos e de centrais solar térmicas de concentração