385 research outputs found

    Desenvolvimento e modelagem de quadrirrotor: um estudo de caso

    Get PDF
    TCC (graduação) - Universidade Federal de Santa Catarina. Centro Tecnológico. Engenharia Elétrica.Este trabalho apresenta um estudo sobre o desenvolvimento e modelagem de um veículo quadrirrotor. Este documento acompanha o processo de desenvolvimento de uma dessas aeronaves, partindo de um estudo sobre as principais dinâmicas de voo e características desse tipo de sistema. No estudo é apresentado um processo de caracterização usando as diferentes componentes do aparelho, o que permitiu a modelagem e simulação do sistema. É proposto também uma solução para implementação e controle a partir desse modelo simulado

    Neurobiology and clinical implications of lucid dreaming

    Get PDF
    Several lines of evidence converge to the idea that rapid eye movement sleep (REMS) is a good model to foster our understanding of psychosis. Both REMS and psychosis course with internally generated perceptions and lack of rational judgment, which is attributed to a hyperlimbic activity along with hypofrontality. Interestingly, some individuals can become aware of dreaming during REMS, a particular experience known as lucid dreaming (LD), whose neurobiological basis is still controversial. Since the frontal lobe plays a role in self-consciousness, working memory and attention, here we hypothesize that LD is associated with increased frontal activity during REMS. A possible way to test this hypothesis is to check whether transcranial magnetic or electric stimulation of the frontal region during REMS triggers LD. We further suggest that psychosis and LD are opposite phenomena: LD as a physiological awakening while dreaming due to frontal activity, and psychosis as a pathological intrusion of dream features during wake state due to hypofrontality. We further suggest that LD research may have three main clinical implications. First, LD could be important to the study of consciousness, including its pathologies and other altered states. Second, LD could be used as a therapy for recurrent nightmares, a common symptom of depression and post-traumatic stress disorder. Finally, LD may allow for motor imagery during dreaming with possible improvement of physical rehabilitation. In all, we believe that LD research may clarify multiple aspects of brain functioning in its physiological, altered and pathological states

    COMO FICARAM OU FICARÃO AS AÇÕES TRABALHISTAS ADVINDAS DE TERCEIRIZAÇÃO DEPOIS DOS JULGAMENTOS DO RECURSO EXTRAORDINÁRIO Nº 958.252 (TEMA 725 DE REPERCUSSÃO GERAL) E DA ADPF Nº 324, SOBRE A POSSIBILIDADE DE TERCEIRIZAÇÃO DE FORMA AMPLA; EM INTERPRETAÇÃO C

    Get PDF
    O presente artigo se propõe a discutir os efeitos das decisões prolatadas no Recurso Extraordinário nº 958.252 e ADPF nº 324, sobre a licitude da terceirização, agora, possível de forma mais ampla, bem como seus reflexos nos processos em curso e mesmo nos processos a serem eventualmente ajuizados posteriormente, para analisar a licitude ou não deste tipo de contratação por meio de interposta pessoa

    Jörn Rüsen: Theory of History as Aufklärung

    Get PDF

    DIREITO PROCESSUAL CONSTITUCIONAL TRANSNACIONAL E O ACESSO À JUSTIÇA INTERAMERICANA

    Get PDF
    Dentro do campo do Direito Processual Constitucional Transnacional, o presente trabalho, através do levantamento bibliográfico e empírico, pelo método analítico-qualitativo, tratou de duas questões adstritas ao processo que tramita no Sistema Interamericano de Direitos Humanos (doravante SIDH) que, após um estudo pormenorizado de seus elementos essenciais, observou-se duas problemáticas que acercam o procedimento e obstaculizam o acesso efetivo, adequado e tempestivo à justiça interamericana, quais sejam: o “rechaço” e a mora processual

    Capoeira et Internet

    Get PDF
    Avec l’informatisation et la rapidité qu’elle assure aux relations interpersonnelles et à l’échange des informations dans le monde contemporain, les groupes de capoeira de Salvador sont en train de s’intégrer peu à peu dans ce que l’on appelle « l’univers virtuel ». Dans ce contexte, ils rompent avec les comportements traditionnels et intensifient la communication entre les groupes à travers le réseau mondial des ordinateurs, essentiellement comme utilisateurs des sites de mise en relation (les réseaux sociaux), l’Orkut par exemple, qui rendent possible le raccourcissement des distances entre groupes et maîtres. L’objectif principal de la recherche sur les “rapports entre capoeira et Internet : tactiques de territorialisation dans les quartiers populaires de Salvador, Bahia” a été de comprendre les relations entre la capoeira et l’univers virtuel d’Internet à partir de l’analyse des tactiques de territorialisation des différents groupes et communautés dans les quartiers de Salvador. Les groupes de Capoeira dont les communautés sont actives sur Orkut ont été repérés, leurs lieux d’implantation dans la ville déterminés, et les maîtres et participants des groupes sélectionnés ont été interviewés. L’analyse des résultats obtenus souligne que l’appropriation des outils disponibles grâce à Orkut élargit les relations et raccourcit les distances entre les groupes et les maîtres ; elle facilite aussi les ramifications entre divers lieux de la ville et du monde d’une manière hétérogène et plurielle.In contemporary times, the Capoeira groups of Salvador are coming gradually inserted into the so-called “virtual universe”, thanks to the informatics advance, the high speed of personal relations and the exchange of information. In this context, they are breaking with traditionalist behaviors and increasing the communication between groups through the computer world network, mainly as users of relationship sites as Orkut, that allows the shortening of distance between groups and Masters. The general objective of the research “The relations between Capoeira and Internet: Tactics of territoriality in popular quarters of Salvador, Bahia” was to understand the relations between Capoeira and the Internet virtual universe through the analyses of the territoriality tactics of the different groups and communities in Salvador neighborhoods. The collection of Capoeira groups active in Orkut communities was realized, their location in the city was identified. The Masters and members of the selected groups were interviewed. The main results were: (i) with the appropriation of Orkut tools the groups and Masters are able to become closer, thanks to the shortening of distances between them; (ii) it is easier for them to branch off different places in the city and around the world in a very plural and heterogenic way.Com a informatização e a velocidade que permeia as relações interpessoais e a troca de informações no mundo contemporâneo, grupos de Capoeira de Salvador vão se inserindo paulatinamente no assim denominado “universo virtual”. Neste contexto, eles vêm quebrando comportamentos tradicionalistas e intensificando a comunicação entre grupos através da rede mundial de computadores, principalmente como usuários dos sites de relacionamento (as redes sociais), a exemplo do Orkut, que possibilitam o encurtamento das distâncias entre grupos e Mestres. O objetivo geral da pesquisa “Relações entre Capoeira e Internet: Táticas de territorialização nos bairros populares de Salvador, Bahia” foi o de compreender as relações entre a Capoeira e o universo virtual da internet a partir da análise das táticas de territorialização dos diferentes grupos/comunidades nos bairros de Salvador. Foram levantados os grupos de Capoeira com comunidades ativas no Orkut, identificados seus locais de ocorrência na cidade e entrevistados Mestres e participantes dos grupos selecionados. A análise dos resultados obtidos evidenciou que a apropriação das ferramentas disponibilizadas pelo Orkut vem estreitando relações e possibilitando o encurtamento das distâncias entre grupos e Mestres, assim como facilitando sua ramificação em diversos lugares da cidade e do mundo de uma forma bastante heterogênea e plural

    Responses of soil microbial biomass and enzyme activity to herbicides imazethapyr and flumioxazin

    Get PDF
    The use of herbicides is important for controlling weeds in crops. However, they can present impacts on soil properties, such as biological properties. In this study, we evaluated the responses of soil microbial biomass and enzymes activity to the application of the herbicides imazethapyr and flumioxazin and their mixture in an experiment under laboratory conditions, using soils with a different history of use. Soil microbial biomass C (MBC) decreased, while microbial biomass N (MBN) was not affected after the application of the herbicides as compared to the control. Soil respiration, respiratory quotient, and dehydrogenase (DHA) activity increased significantly after the application of the herbicides compared to the control. The hydrolysis of fluorescein diacetate (FDA) was not significantly different between the control and the herbicide treatments. The principal response curve showed the largest initial effects for the flumioxazin, followed by imazethapyr and their mixture. Flumioxazin had a different influence on soil respiration and respiratory quotient than imazethapyr and their mixture. Finally, the effects of herbicides on soil microbial biomass and enzymes are short-term as we observed recovery in the biological parameters over time.</p
    corecore