Riemann-Langevin Particle Filtering in Track-Before-Detect

Track-before-detect (TBD) is a powerful approach that consists in providing the tracker with sensor measurements directly without pre-detection. Due to the measurement model non-linearities, online state estimation in TBD is most commonly solved via particle filtering. Existing particle filters for TBD do not incorporate measurement information in their proposal distribution. The Langevin Monte Carlo (LMC) is a sampling method whose proposal is able to exploit all available knowledge of the posterior (that is, both prior and measurement information). This letter synthesizes recent advances in LMC-based filtering to describe the Riemann-Langevin particle filter and introduces its novel application to TBD. The benefits of our approach are illustrated in a challenging low-noise scenario.Comment: Minor grammatical update

Is the timed-up and go test feasible in mobile devices? A systematic review

The number of older adults is increasing worldwide, and it is expected that by 2050 over 2 billion individuals will be more than 60 years old. Older adults are exposed to numerous pathological problems such as Parkinson’s disease, amyotrophic lateral sclerosis, post-stroke, and orthopedic disturbances. Several physiotherapy methods that involve measurement of movements, such as the Timed-Up and Go test, can be done to support efficient and effective evaluation of pathological symptoms and promotion of health and well-being. In this systematic review, the authors aim to determine how the inertial sensors embedded in mobile devices are employed for the measurement of the different parameters involved in the Timed-Up and Go test. The main contribution of this paper consists of the identification of the different studies that utilize the sensors available in mobile devices for the measurement of the results of the Timed-Up and Go test. The results show that mobile devices embedded motion sensors can be used for these types of studies and the most commonly used sensors are the magnetometer, accelerometer, and gyroscope available in off-the-shelf smartphones. The features analyzed in this paper are categorized as quantitative, quantitative + statistic, dynamic balance, gait properties, state transitions, and raw statistics. These features utilize the accelerometer and gyroscope sensors and facilitate recognition of daily activities, accidents such as falling, some diseases, as well as the measurement of the subject's performance during the test execution.info:eu-repo/semantics/publishedVersio

Cidadezinha qualquer : série de reportagens em cidades goianas com menos de dois mil habitantes

Monografia (graduação)—Universidade de Brasília, Faculdade de Comunicação, Departamento de Jornalismo, 2015.O presente projeto é uma série de reportagens radiofônicas nas seis cidades goianas com até dois mil habitantes, segundo o censo de 2010 do Instituto Brasileiro de Geografia e Estatística (IBGE). O objetivo é tentar contar histórias que vão além do estereótipo de que cidades pequenas se resumem a lugares pacatos, seguros e, nos quais, todos os moradores se conhecem. Foram percorridos, ao todo, 4.231 quilômetros para ouvir mais de 30 histórias relacionadas às cidades de Anhanguera, Lagoa Santa, Cachoeira de Goiás, São João da Paraúna, Moiporá e São Patrício. O projeto encontra como justificativa a necessidade de o jornalismo lançar um olhar humanista para o interior e “ir para a rua”, sair das redações dos grandes centros urbanos

Comparative antioxidant and antimicrobial properties of Lentinula edodes Donko and Koshin varieties against priority multidrug-resistant pathogens

The problematic increase in multidrug-resistant bacteria translates into the urgent need to discover novel and effective antimicrobial substances. Herein, mushrooms could be a promising alternative of natural source of new antimicrobials. The present work aimed to compare the phytochemical composition and antimicrobial activity of methanol and aqueous crude extracts of Lentinula edodes var. Koshin and Donko. Disk diffusion method was used to screen the antimicrobial activity and to assess the synergistic effect of the mushroom extracts. Microdilution method was used to determine the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC). Phytochemical characterization of mushrooms extracts was achieved by analysis of total phenols, ortho-diphenols content and its antioxidant activity. The results noticed a positive relation between phenolic compounds content, antioxidant activity, and antimicrobial capacity of the mushroom's extracts. The L. edodes var. Koshin aqueous extracts, which contained the highest amount of total phenolic compounds, exhibited the highest scavenging capacity of ABTS which, in turns, exhibited the highest antimicrobial efficacy in inhibiting the growth of methicillin-resistant Staphylococcus aureus. Moreover, the combination between mushrooms extracts and commercial antibiotics showed favorable synergistic effects against tested bacteria. These results suggest that L. edodes var. Koshin may represent an important and valuable therapeutic source of compounds to be used against multidrug-resistant bacteria.This work was supported by the project I&T Companies in Co- Promotion FungiTech, Norte-01-0247-FEDER-033788; National Funds by FCT - Portuguese Foundation for Science and Technology, under the project UIDB/04033/2020 (CITAB-Center for the Research and Technology of Agro-Environmental and Biological Sciences), Centro de Química – Vila Real (UIDB/00616/2020) and UIDB/00690/2020 (CIMO-Centro de Investigaç˜ao de Montanha).info:eu-repo/semantics/publishedVersio

PODER E TRABALHO: PRAZER OU SOFRIMENTO?

Este estudo mensurou a correlação entre poder organizacional e vivências de prazer e sofrimento de docentes em duas instituições privadas de ensino superior (IPES) de Belo Horizonte. Foi desenvolvida pesquisa descritiva, de natureza quantitativa, através de pesquisa de campo com 39 professores da IPES A e 39 da IPES B. Foram utilizados dois questionários validados: o questionário de Confi gurações de Poder Organizacional, e o Inventário de Trabalho e Riscos de Adoecimento (ITRA). Os resultados indicaram predominância das confi gurações de poder, missionária e sistema fechado, na IPES A, e autocracia e missionária, na IPES B. Também foi evidenciada percepção de prazer, de forma mais signifi cativa que sofrimento, nas duas IPES, confi rmando haver correlações signifi cativas entre confi gurações de poder e as vivências de prazer e sofrimento nas duas IPES pesquisadas

Identification of diseases based on the use of inertial sensors: a systematic review

Inertial sensors are commonly embedded in several devices, including smartphones, and other specific devices. This type of sensors may be used for different purposes, including the recognition of different diseases. Several studies are focused on the use of accelerometer for the automatic recognition of different diseases, and it may powerful the different treatments with the use of less invasive and painful techniques for patients. This paper is focused in the systematic review of the studies available in the literature for the automatic recognition of different diseases with accelerometer sensors. The disease that is the most reliably detectable disease using accelerometer sensors, available in 54% of the analyzed studies, is the Parkinson’s disease. The machine learning methods implements for the recognition of Parkinson’s disease reported an accuracy of 94%. Other diseases are recognized in less number that will be subject of further analysis in the future.info:eu-repo/semantics/publishedVersio

Da simples natureza guardemos sempre as leis : a epístola de Silva Alvarenga a Basílio da Gama

O artigo estuda uma epístola em verso, publicada em 1772, que Manuel Inácio da Silva Alvarenga dirigiu a José Basílio da Gama, a propósito da publicação de O Uraguai. Sublinhando a importância teórica-crítica do poema, identificamos algumas das fontes utilizadas pelo autor, chamamos a atenção para o modelo de alexandrino nele presente e damos a conhecer o texto na sua versão correta, sob a forma de uma edição crítica anotada.This paper studies an epistle in verse, published in 1772, by Manuel Inácio da Silva Alvarenga, addressed to José Basilio da Gama, about the publication of O Uraguai. The article emphasizes the theoretical-critical importance of the poem, identifies some of the sources used by the author, calls the attention to the model of the Alexandrian verse and presents the text in its correct version in the form of an annotated critical edition

Efeitos da espacialização climática e interação genótipo-ambiente sobre o peso da desmama de bovinos da raça nelore criados em sistemas extensivos no norte do Brasil

A expressão fenotípica pode variar significativamente sob diferenças climáticas e deve ser um motivo de preocupação na identificação e seleção de animais superiores no Brasil. Dessa forma, no presente estudo objetivou-se espacializar fatores ambientais para discriminar os estados do Maranhão (MA), Pará (PA) e Tocantins (TO) e verificar presença de interação genótipo-ambiente (IGA) para peso ao desmame em rebanhos bovinos da raça Nelore localizados nestes Estados. As variáveis ambientais analisadas foram: temperatura máxima; temperatura mínima; temperatura média; precipitação; índice vegetativo normalizado; umidade relativa; altitude e índice de temperatura e umidade. Os registros de peso a desmama de bovinos da raça Nelore criados à pasto foram coletados entre os anos de 1997 e 2007 e o conjunto de dados constituído por 21.117 animais, filhos de 161 touros comuns aos Estados do MA, PA e TO. As estimativas para herdabilidades direta apresentaram magnitudes moderadas, com valores de 0,22 ± 0,013 (MA), 0,26 ± 0,021(PA) e 0,29 ± 0,023 (TO). As variáveis ambientais discriminaram bem os Estados e as estimativas revelaram variação da resposta genética da progênie, dependendo do pai e do Estado em questão. As estimativas de correlações genéticas para peso ao desmame indicaram forte presença de interação genótipo-ambiente.Depending on the environmental differences among the regions, the phenotypic expression in beef cattle may significantly vary between the progenies of the same sire, and this is an important rule to identify the best animal. Thus, this study was carried out to spatialize environmental factors that may help to compare and discriminate the states of Maranhão, Pará, and Tocantins and also to check for genotype x environment interaction (G x E interaction) in these regions. The environmental variables analyzed were: maximum temperature; minimum temperature; mean temperature; precipitation; normalized difference vegetation index; relative humidity; altitude; and index of temperature and humidity. Records of weaning weight of Nellore cattle raised on pasture were collected between the years of 1997 and 2007. The dataset was constituted of 21.117 animals, progenies of 161 sires. (Co)variance components and breeding values were estimated using the multiple-trait derivative-free restricted maximum likelihood method. Multivariate spatialization revealed clear distinction among the States of Maranhão, Pará, and Tocantins and allowed the identification of important environmental variables for discrimination. The estimate for direct heritability showed moderate magnitudes and were 0.22±0013, 0.26±0.021, and 0.29±0023, for the States of Maranhão, Pará, and Tocantins, respectively. The estimates of correlation between the breeding values, predicted in different States, as well as the genetic correlation for weaning weight showed that sire ranks changed among the States, indicating G x E interaction. There was a variation of the genetic response of the progeny, depending on the sire and on the State. Thus, the G x E interaction should be accounted for in the genetic evaluation of sires and the performance of Nellore cattle under extensive breeding systems in tropical regions of Brazil