40 research outputs found

    Dynamic output feedback for discrete-time Markov jump linear systems

    Get PDF
    Orientador: Jose Claudio GeromelTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de ComputaçãoResumo: Este trabalho tem por objetivo o estudo do projeto de controladores dinâmicos H2 e H? por realimentação de saída para sistemas discretos com parâmetros sujeitos a saltos markovianos. Inicialmente, estudamos o caso de filtragem e propomos diferentes técnicas de projeto para casos especiais relacionados à disponibilidade do estado da cadeia de Markov, também chamado modo, ou a matriz de probabilidades de transição parcialmente conhecida. O resultado principal é a caracterização de todos os controladores dinâmicos lineares tais que a norma da saída controlada é limitada, levando a solução do problema de projeto do controlador linear ótimo H2 ou H?, sob a hipótese de conhecimento do modo por parte do controlador. Todos os projetos são expressos em termos de desigualdades matriciais lineares. Para ilustrar possíveis aplicações dos resultados teóricos, consideramos o projeto de um controlador cuja entrada é transmitida por um canal markoviano, além da modelagem estatística de falhas em sensores/atuadoresAbstract: This work addresses the H2 and H? output feedback design problem for discrete-time Markov jump linear systems. Initially, we study the filtering problem and propose different design techniques to deal with the Markov parameter, often called mode, availability and/or partly known transition probability. The main result is the characterization of all linear controllers such that the controlled output norm remains bounded by a given level, yielding the complete solution of the mode-dependent H2 and H? linear control design problem. All controllers are designed by solving linear matrix inequalities. The theory is illustrated by means of practical examples, consisting of control over data communication through a markovian channel and of statistical modelling of sensors/actuators failuresDoutoradoAutomaçãoDoutor em Engenharia Elétric

    A Deep Insight into the Sialotranscriptome of the Gulf Coast Tick, Amblyomma maculatum

    Get PDF
    Background: Saliva of blood sucking arthropods contains compounds that antagonize their hosts ’ hemostasis, which include platelet aggregation, vasoconstriction and blood clotting; saliva of these organisms also has anti-inflammatory and immunomodullatory properties. Perhaps because hosts mount an active immune response against these compounds, the diversity of these compounds is large even among related blood sucking species. Because of these properties, saliva helps blood feeding as well as help the establishment of pathogens that can be transmitted during blood feeding. Methodology/Principal Findings: We have obtained 1,626,969 reads by pyrosequencing a salivary gland cDNA library from adult females Amblyomma maculatum ticks at different times of feeding. Assembly of this data produced 72,441 sequences larger than 149 nucleotides from which 15,914 coding sequences were extracted. Of these, 5,353 had.75 % coverage to their best match in the non-redundant database from the National Center for Biotechnology information, allowing for the deposition of 4,850 sequences to GenBank. The annotated data sets are available as hyperlinked spreadsheets. Putative secreted proteins were classified in 133 families, most of which have no known function. Conclusions/Significance: This data set of proteins constitutes a mining platform for novel pharmacologically activ

    Habitação pública e modernização capitalista: uma relação dialética entre fontes de pesquisa e procedimentos de análise

    Get PDF
    Este artigo pretende contribuir com uma reflexão metodológica acerca da história da habitação no Brasil, mais especificamente no que diz respeito ao início da ação estatal no setor. Os procedimentos de análise e as formas de mobilização das fontes utilizadas para o trabalho de doutorado realizado pela autora serão postos em tela com o objetivo de evidenciar as escolhas metodológicas que serviram para interpretar a produção pública de habitação entre 1930 e 1964, bem como sua relação com a constituição do sistema capitalista no Brasil. Tal esforço insere-se no trabalho coletivo de pesquisa do Grupo Pioneiros da Habitação Social no Brasil, coordenado por Nabil Bonduki, que realizou amplo levantamento de conjuntos habitacionais construídos no período em questão, e revelou uma diversidade de soluções arquitetônicas e urbanísticas. Devido à natureza do objeto de pesquisa, o grupo entrou em contato com várias fontes documentais que originaram um acervo extenso e diversificado em sua base material. Explorar, interpretar e construir abordagens historiográficas a partir desse acervo é tarefa que ainda não se esgotou. A análise apresentada se justifica diante da complexidade do objeto empírico e de sua inserção num momento crucial para o processo histórico brasileiro.This article intends to contribute a methodological reflection on the history of housing in Brazil, specifically in regard to the beginning of state action in the sector. The analysis procedures and ways of mobilization of the sources used for the doctorate work of the author will be put on display in order to highlight the methodological choices which served to interpret the public housing production between 1930 and 1964, and its relationship to the establishment of the capitalism in Brazil. This effort is part of the collective work of research of the Group Pioneers of Social Housing in Brazil, coordinated by Nabil Bonduki, which produced a comprehensive survey of housing built in the period, and revealed a diversity of architectural and urban solutions. Due to the nature of the research object, the group contacted several documentary sources that originated an extensive and diversified collection in its material base. To explore, to interpret and to build historiographical approaches from this collection is a task that has not been exhausted. The analysis presented is justified by the complexity of the empirical object and its insertion in a crucial moment for the Brazilian historical process

    Sloan Digital Sky Survey IV: mapping the Milky Way, nearby galaxies, and the distant universe

    Get PDF
    We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands of Milky Way stars at high resolution and high signal-to-noise ratios in the near-infrared. The Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey is obtaining spatially resolved spectroscopy for thousands of nearby galaxies (median ). The extended Baryon Oscillation Spectroscopic Survey (eBOSS) is mapping the galaxy, quasar, and neutral gas distributions between and 3.5 to constrain cosmology using baryon acoustic oscillations, redshift space distortions, and the shape of the power spectrum. Within eBOSS, we are conducting two major subprograms: the SPectroscopic IDentification of eROSITA Sources (SPIDERS), investigating X-ray AGNs and galaxies in X-ray clusters, and the Time Domain Spectroscopic Survey (TDSS), obtaining spectra of variable sources. All programs use the 2.5 m Sloan Foundation Telescope at the Apache Point Observatory; observations there began in Summer 2014. APOGEE-2 also operates a second near-infrared spectrograph at the 2.5 m du Pont Telescope at Las Campanas Observatory, with observations beginning in early 2017. Observations at both facilities are scheduled to continue through 2020. In keeping with previous SDSS policy, SDSS-IV provides regularly scheduled public data releases; the first one, Data Release 13, was made available in 2016 July

    Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe

    Get PDF
    We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands of Milky Way stars at high resolution and high signal-to-noise ratios in the near-infrared. The Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey is obtaining spatially resolved spectroscopy for thousands of nearby galaxies (median z0.03z\sim 0.03). The extended Baryon Oscillation Spectroscopic Survey (eBOSS) is mapping the galaxy, quasar, and neutral gas distributions between z0.6z\sim 0.6 and 3.5 to constrain cosmology using baryon acoustic oscillations, redshift space distortions, and the shape of the power spectrum. Within eBOSS, we are conducting two major subprograms: the SPectroscopic IDentification of eROSITA Sources (SPIDERS), investigating X-ray AGNs and galaxies in X-ray clusters, and the Time Domain Spectroscopic Survey (TDSS), obtaining spectra of variable sources. All programs use the 2.5 m Sloan Foundation Telescope at the Apache Point Observatory; observations there began in Summer 2014. APOGEE-2 also operates a second near-infrared spectrograph at the 2.5 m du Pont Telescope at Las Campanas Observatory, with observations beginning in early 2017. Observations at both facilities are scheduled to continue through 2020. In keeping with previous SDSS policy, SDSS-IV provides regularly scheduled public data releases; the first one, Data Release 13, was made available in 2016 July

    Sloan Digital Sky Survey IV : mapping the Milky Way, nearby galaxies, and the distant universe

    Get PDF
    We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands of Milky Way stars at high resolution and high signal-to-noise ratios in the near-infrared. The Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey is obtaining spatially resolved spectroscopy for thousands of nearby galaxies (median z ~ 0.03). The extended Baryon Oscillation Spectroscopic Survey (eBOSS) is mapping the galaxy, quasar, and neutral gas distributions between z ~ 0.6 and 3.5 to constrain cosmology using baryon acoustic oscillations, redshift space distortions, and the shape of the power spectrum. Within eBOSS, we are conducting two major subprograms: the SPectroscopic IDentification of eROSITA Sources (SPIDERS), investigating X-ray AGNs and galaxies in X-ray clusters, and the Time Domain Spectroscopic Survey (TDSS), obtaining spectra of variable sources. All programs use the 2.5 m Sloan Foundation Telescope at the Apache Point Observatory; observations there began in Summer 2014. APOGEE-2 also operates a second near-infrared spectrograph at the 2.5 m du Pont Telescope at Las Campanas Observatory, with observations beginning in early 2017. Observations at both facilities are scheduled to continue through 2020. In keeping with previous SDSS policy, SDSS-IV provides regularly scheduled public data releases; the first one, Data Release 13, was made available in 2016 July

    Guidelines for the use and interpretation of assays for monitoring autophagy (4th edition)1.

    Get PDF
    In 2008, we published the first set of guidelines for standardizing research in autophagy. Since then, this topic has received increasing attention, and many scientists have entered the field. Our knowledge base and relevant new technologies have also been expanding. Thus, it is important to formulate on a regular basis updated guidelines for monitoring autophagy in different organisms. Despite numerous reviews, there continues to be confusion regarding acceptable methods to evaluate autophagy, especially in multicellular eukaryotes. Here, we present a set of guidelines for investigators to select and interpret methods to examine autophagy and related processes, and for reviewers to provide realistic and reasonable critiques of reports that are focused on these processes. These guidelines are not meant to be a dogmatic set of rules, because the appropriateness of any assay largely depends on the question being asked and the system being used. Moreover, no individual assay is perfect for every situation, calling for the use of multiple techniques to properly monitor autophagy in each experimental setting. Finally, several core components of the autophagy machinery have been implicated in distinct autophagic processes (canonical and noncanonical autophagy), implying that genetic approaches to block autophagy should rely on targeting two or more autophagy-related genes that ideally participate in distinct steps of the pathway. Along similar lines, because multiple proteins involved in autophagy also regulate other cellular pathways including apoptosis, not all of them can be used as a specific marker for bona fide autophagic responses. Here, we critically discuss current methods of assessing autophagy and the information they can, or cannot, provide. Our ultimate goal is to encourage intellectual and technical innovation in the field

    Guidelines for the use and interpretation of assays for monitoring autophagy (4th edition)

    Get PDF

    Sloan Digital Sky Survey IV: mapping the Milky Way, nearby galaxies, and the distant universe

    Get PDF
    We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands of Milky Way stars at high resolution and high signal-to-noise ratios in the near-infrared. The Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey is obtaining spatially resolved spectroscopy for thousands of nearby galaxies (median ). The extended Baryon Oscillation Spectroscopic Survey (eBOSS) is mapping the galaxy, quasar, and neutral gas distributions between and 3.5 to constrain cosmology using baryon acoustic oscillations, redshift space distortions, and the shape of the power spectrum. Within eBOSS, we are conducting two major subprograms: the SPectroscopic IDentification of eROSITA Sources (SPIDERS), investigating X-ray AGNs and galaxies in X-ray clusters, and the Time Domain Spectroscopic Survey (TDSS), obtaining spectra of variable sources. All programs use the 2.5 m Sloan Foundation Telescope at the Apache Point Observatory; observations there began in Summer 2014. APOGEE-2 also operates a second near-infrared spectrograph at the 2.5 m du Pont Telescope at Las Campanas Observatory, with observations beginning in early 2017. Observations at both facilities are scheduled to continue through 2020. In keeping with previous SDSS policy, SDSS-IV provides regularly scheduled public data releases; the first one, Data Release 13, was made available in 2016 July
    corecore