Construção e validação de um receptor GPS para uso espacial

Global Positioning System, or simply GPS, it is a radionavigation system developed by United States for military applications, but it becames very useful for civilian using. In the last decades Brazil has developed sounding rockets and today many projects to build micro and nanosatellites has appeared. This kind of vehicles named spacecrafts or high dynamic vehicles, can use GPS for its autonome location and trajectories controls. Despite of a huge number of GPS receivers available for civilian applications, they cannot used in high dynamic vehicles due environmental issues (vibrations, temperatures, etc.) or imposed dynamic working limits. Only a few nations have the technology to build GPS receivers for spacecrafts or high dynamic vehicles is available and they imposes rules who difficult the access to this receivers. This project intends to build a GPS receiver, to install them in a payload of a sounding rocket and data collecting to verify its correct operation when at the flight conditions. The inner software to this receiver was available in source code and it was tested in a software development platform named GPS Architect. Many organizations cooperated to support this project: AEB, UFRN, IAE, INPE e CLBI. After many phases: defining working conditions, choice and searching electronic, the making of the printed boards, assembling and assembling tests; the receiver was installed in a VS30 sounding rocket launched at Centro de Lançamento da Barreira do Inferno in Natal/RN. Despite of the fact the locations data from the receiver were collected only the first 70 seconds of flight, this data confirms the correct operation of the receiver by the comparison between its positioning data and the the trajectory data from CLBI s tracking radar named ADOUR

Produção em revista : Representação do moderno e do regional na experiência potiguar anos 1920

This work brings some reading about a few Norte-rio-grandenses writers collaborations published in literary papers which circulated during the third decade of the twentieth century in Brazil, in a way of enlarging the understanding of how the cultural debate was carried out in the years of the definition of the Brazilian Modernism, based on the relationships between literature and culture. Under the genres of prose and poetry, the selected textual collaborations for analysis have brought the traces of a small group of articulated authors in the Brazilian cultural scenery from the 1920 s, concerning the issues of the modern (linked to the modernist renovation) and the regional (under the aspects of the tradition). The set of the analyzed collaborations is representative of a modern-regional cultural practice marked by a tendency either local or cosmopolitan, thus, sharing a large dimension of the formation of the modern literary tradition, marked by different kinds of practices which give form to the project of a collective national awareness. The characterization of the existence of an intellectual field with big links, however with its own characteristics and a certain autonomy, which also gets integrated to the cultural debate of the so-called modernist years through the literary vehicles, gives to these intellectual people a co-participation in the renewing movement in the formation context of the brazilian cultural modernity of the early twentieth century

Aspectos epidemiológicos, cognitivo-comportamentais e neurofisiológicos do sonho lúcido

Lucid dreaming (LD) is a mental state in which the subject is aware of being dreaming while dreaming. The prevalence of LD among Europeans, North Americans and Asians is quite variable (between 26 and 92%) (Stepansky et al., 1998; Schredl & Erlacher, 2011; Yu, 2008); in Latin Americans it is yet to be investigated. Furthermore, the neural bases of LD remain controversial. Different studies have observed that LD presents power increases in the alpha frequency band (Tyson et al., 1984), in beta oscillations recorded from the parietal cortex (Holzinger et al., 2006) and in gamma rhythm recorded from the frontal cortex (Voss et al., 2009), in comparison with non-lucid dreaming. In this thesis we report epidemiological and neurophysiological investigations of LD. To investigate the epidemiology of LD (Study 1), we developed an online questionnaire about dreams that was answered by 3,427 volunteers. In this sample, 56% were women, 24% were men and 20% did not inform their gender (the median age was 25 years). A total of 76.5% of the subjects reported recalling dreams at least once a week, and about two-thirds of them reported dreaming always in the first person, i.e. when the dreamer observes the dream from within itself, not as another dream character. Dream reports typically depicted actions (93.3%), known people (92.9%), sounds/voices (78.5%), and colored images (76.3%). The oneiric content was related to plans for upcoming days (37.8%), and memories of the previous day (13.8%). Nightmares were characterized by general anxiety/fear (65.5%), feeling of being chased (48.5%), and non-painful unpleasant sensations (47.6%). With regard to LD, 77.2% of the subjects reported having experienced LD at least once in their lifetime (44.9% reported up to 10 episodes ever). LD frequency was weakly correlated with dream recall frequency (r = 0.20, p <0.001) and was higher in men (χ2=10.2, p=0.001). The control of LD was rare (29.7%) and inversely correlated with LD duration (r=-0.38, p <0.001), which is usually short: to 48.5% of the subjects, LD takes less than 1 minute. LD occurrence is mainly associated with having sleep without a fixed time to wake up (38.3%), which increases the chance of having REM sleep (REMS). LD is also associated with stress (30.1%), which increases REMS transitions into wakefulness. Overall, the data suggest that dreams and nightmares can be evolutionarily understood as a simulation of the common situations that happen in life, and that are related to our social, psychological and biological integrity. The results also indicate that LD is a relatively common experience (but not recurrent), often elusive and difficult to control, suggesting that LD is an incomplete stationary stage (or phase transition) between REMS and wake state. Moreover, despite the variability of LD prevalence among North Americans, Europeans and Asians, our data from Latin Americans strengthens the notion that LD is a general phenomenon of the human species. To further investigate the neural bases of LD (Study 2), we performed sleep recordings of 32 non-frequent lucid dreamers (sample 1) and 6 frequent lucid dreamers (sample 2). In sample 1, we applied two cognitive-behavioral techniques to induce LD: presleep LD suggestion (n=8) and light pulses applied during REMS (n=8); in a control group we made no attempt to influence dreaming (n=16). The results indicate that it is quite difficult but still possible to induce LD, since we could induce LD in a single subject, using the suggestion technique. EEG signals from this one subject exhibited alpha (7-14 Hz) bursts prior to LD. These bursts were brief (about 3s), without significant change in muscle tone, and independent of the presence of rapid eye movements. No such bursts were observed in the remaining 31 subjects. In addition, LD exhibited significantly higher occipital alpha and right temporo-parietal gamma (30-50 Hz) power, in comparison with non-lucid REMS. In sample 2, LD presented increased frontal high-gamma (50-100 Hz) power on average, in comparison with non-lucid REMS; however, this was not consistent across all subjects, being a clear phenomenon in just one subject. We also observed that four of these volunteers showed an increase in alpha rhythm power over the occipital region, immediately before or during LD. Altogether, our preliminary results suggest that LD presents neurophysiological characteristics that make it different from both waking and the typical REMS. To the extent that the right temporo-parietal and frontal regions are related to the formation of selfconsciousness and body internal image, we suggest that an increased activity in these regions during sleep may be the neurobiological mechanism underlying LD. The alpha rhythm bursts, as well as the alpha power increase over the occipital region, may represent micro-arousals, which facilitate the contact of the brain during sleep with the external environment, favoring the occurrence of LD. This also strengthens the notion that LD is an intermediary state between sleep and wakefulness

A teoria educacional no Ocidente: entre modernidade e pós-modernidade

O artigo trata das principais forças em filosofia da educação no Ocidente Moderno e Contemporâneo. Particularmente, destaca a posição do Brasil nos últimos anos, dado que localiza na contribuição de Paulo Freire, junto com o alemão Herbart e com o norte-americano Dewey, a formulação das linhas mestras da pedagogia moderna. O texto também faz menção ao trabalho atual do neopragmatismo, sob o qual nasce a filosofia da educação inspirada nos filósofos norte americanos Richard Rorty e Donald Davidson, que revolucionam atualmente não só a filosofia mas seus campos aplicados, como o direito, a religião, a política e, como não poderia deixar de ser, a educação.

O zoológico existencialista de Edward Albee

Pós-graduação em Estudos Literários - FCLAR

Aplicação do direito antidumping e o impacto sobre as exportações brasileiras

Includes bibliography

Estabelecimento de um índice de sensibilidade ambiental ao óleo em ambientes fluviais, com o suporte da ferramenta MORPH

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Nacionalismo, cosmopolitismo e afrancesamento em Mon coeur balance e Leur âme, de Oswald de Andrade e Guilherme de Almeida

Pós-graduação em História - FCLAS

Porque as ideias importam: a crença no excepcionalismo americano como guia de formulação das grandes estratégias dos Estados Unidos no alvorecer da superpotência

Pós-graduação em Relações Internacionais (UNESP - UNICAMP - PUC-SP) - FFC

O Protocolo de Kyoto: a União Européia na liderança do regime de mudanças climáticas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O petróleo e o envolvimento militar dos Estados Unidos no Golfo Pérsico (1945-2003)

Pós-graduação em Relações Internacionais (UNESP - UNICAMP - PUC-SP) - FFC

Colagem, antropofagia e subversão em Galvez imperador do Acre, de Márcio Souza

O presente trabalho aborda o romance Galvez Imperador do Acre, publicado em 1976, pelo escritor amazonense Márcio Souza, estabelecendo as relações entre o texto literário e as propostas estéticas das vanguardas modernistas, tanto européias quanto brasileiras, propondo, assim, a investigação das relações entre modernismo e pós-modenismo, bem como as relações entre literatura, sociedade, história e cultura. Abordaremos questões como a ressignificação de textos literários ou não em Galvez imperador do Acre por meio do processo de colagem e intertextualidade, as relações entre o romance e o momento histórico que retoma e com aquele em que foi produzido, a operação de retomada do passado de forma crítica e transformadora e as possibilidades de leitura do texto literário com vista a algumas teorias pós-modernistas e pós-colonialistas. Observaremos, assim, a maneira como o mesmo retoma a Belle Époque e a extração do látex na Amazônia e sua estética fragmentária, constituída de diversas citações de autores canônicos, investigando o funcionamento da colagem e da antropofagia como principais ferramentas de denúncia e subversão ao processo cultural de importação de valores europeus vivido pelas capitais amazônicas no momento representado pelo romance e cuja crítica pode ser extrapolada para todo um processo de formação cultural no Brasil e na Amazônia. Para isso, poremos em causa as teorias de Jaques Derrida, Walter Benjamim, Claude Levi-Strauss, Fredric Jameson, Luiz Costa Lima, Antonio Candido, Aijaz Ahmad, Homi Bhabha, Stuart Hall, Canclini, Silviano Santiago, Angel Rama, Linda Hutcheon, Antoine Compagnon, entre outros, afim de, a partir do romance em análise, aprofundarmos a discussão teórica acerca das relações comparativas entre textos literários e entre os Estudos Literários e outros campos de estudo.

Ilusão e paraíso: história e arqueologia na Amazônia (1948-1965)

A escrita da moderna arqueologia da Amazônia está relacionada ao trabalho dos norte-americanos Betty Meggers (1921-) e Clifford Evans (1920-1981). A relevância histórica das pesquisas efetuadas pelo casal e especialmente por Meggers é o foco desta dissertação. O objetivo é apresentar uma história social e intelectual da arqueologia amazônica tomando como foco central a atividade de Betty Meggers na Amazônia brasileira com a finalidade de compreender o processo de produção, circulação, recepção e debates em torno das hipóteses sobre a ocupação da Amazônia, e suas influências contemporâneas no campo da arqueologia amazônica. E, desse modo, analisar a inserção histórica que o casal alcançou no campo científico sobre a Amazônia.

Percepção estética de parâmetros ortodônticos por diferentes grupos de indivíduos

Pós-graduação em Ciências Odontológicas - FOAR

Cephalometric analysis for the diagnosis of sleep apnea: a comparative study between reference values and measurements obtained for Brazilian subjects

OBJECTIVE: To verify if the reference values of Sleep Apnea cephalometric analysis of North American individuals are similar to the ones of Brazilian individuals presenting no craniofacial anomalies. The study also aimed to identify craniofacial alterations in Obstructive Sleep Apnea-Hypopnea Syndrome (OSAHS) patients in relation to individuals without clinical characteristics of the disease through this cephalometric analysis. METHOD: It were used 55 lateral cephalograms consisting of 29 for the control group of adult individuals without clinical characteristics of OSAHS and 26 apneic adults. All radiographs were submitted to Sleep Apnea cephalometric analysis through Radiocef Studio 2.0. The standard values of this analysis were compared, by means of z test, to the ones obtained from the control group and these were compared to values from apneic group through Student's t test. RESULTS: There were no significant differences between values obtained from control group and standard values. On the group of OSAHS patients it was observed a decrease on the dimensions of upper airways and an increase on the soft palate length. CONCLUSIONS: The standard values of Sleep Apnea analysis can be used as reference in Brazilian individuals. Besides, through lateral cephalograms it was possible to identify craniofacial alterations in OSAHS patients.