966 resultados para Global Positioning


Relevância:

30.00% 30.00%

Publicador:

Resumo:

This paper considers the staging of violence, atrocities, and sexuality in the conduct of the war on terror. The piece discusses the manner in which the terms of the war on terror appear to shut down possible debate and examines the rhetorical and representational strategies that cause this. The paper argues that the war on terror includes a cultural project that seeks to create a consenting global audience. This cultural project appears more diffuse and less immediately instrumental than the military and diplomatic activities of this global battle. The piece argues that it is through the circulation of open secrets and accounts of torture and abuse that a global audience is constructed as both witness and participant in the practices and objectives of the war and that this positioning is designed to corral audience understanding into the suggested narratives of the proponents of the war. Este documento considera el escenario de la violencia, las atrocidades y la sexualidad en la conducta de la guerra contra el terror. El artículo plantea la manera en que los términos de la guerra contra el terror parecen suspender un posible debate y examina las estrategias retóricas y representativas que causaron esto. El documento plantea que la guerra contra el terror incluye un proyecto cultural que busca crear una audiencia global de común acuerdo. Este proyecto cultural parece más difuso y menos útil en el momento, que las actividades militares y diplomáticas de esta batalla global. El artículo sostiene que es mediante la circulación de secretos abiertos y de informes sobre la tortura y el abuso, que se forma una audiencia global tanto testigos como participantes de las prácticas y los objetivos de la guerra y que esa posición está designada a encerrar el conocimiento de la audiencia dentro de los relatos sugeridos por los proponentes de guerra.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

This book is an urgent and compelling account of the Occupy movements: from the M15 movement in Spain, to the wave of Occupations flooding across cities in American, Europe and Australia, to the harsh reality of evictions as corporations and governments attempted to reassert exclusive control over public space. Across a vast range of international examples over twenty authors analyse, explain and helps us understand the movement. These movements were a novel and noisy intervention into the recent capitalist crisis in developed economies, developing an exceptionally broad identity through a call to arms addressed to 'the 99%', and emphasizing the importance of public space in the creation and maintenance of opposition. The novelties of these movements, along with their radical positioning and the urgency of their claims all demand analysis. This book investigates the crucial questions of how and why this form of action spread so rapidly and so widely, how the inclusive discourse of 'the 99%' matched up to the reality of the practice. It is vital to understand not just the choice of tactics and the vitality of protest camps in public spaces, but also how the myriad of challenges and problems were negotiated. This book was published as a special issue of Social Movement Studies.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

The proliferation of weapons of mass destruction (WMD), nuclear, biological and chemical (NBC) is one of the main security challenges facing the international community today. However the new Global Security Strategy of 2016 raises the question of non-proliferation of WMD only as an incidental matter, not addressing directly the threat, a fundamental threat in the regional and global security. This is a clear step backwards for the European common security.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Rail transportation has significant importance in the future world. This importance is tightly bounded to accessible, sustainable, efficient and safe railway systems. Precise positioning in railway applications is essential for increasing railway traffic, train-track control, collision avoidance, train management and autonomous train driving. Hence, precise train positioning is a safety-critical application. Nowadays, positioning in railway applications highly depends on a cellular-based system called GSM-R, a railway-specific version of Global System for Mobile Communications (GSM). However, GSM-R is a relatively outdated technology and does not provide enough capacity and precision demanded by future railway networks. One option for positioning is mounting Global Navigation Satellite System (GNSS) receivers on trains as a low-cost solution. Nevertheless, GNSS can not provide continuous service due to signal interruption by harsh environments, tunnels etc. Another option is exploiting cellular-based positioning methods. The most recent cellular technology, 5G, provides high network capacity, low latency, high accuracy and high availability suitable for train positioning. In this thesis, an approach to 5G-based positioning for railway systems is discussed and simulated. Observed Time Difference of Arrival (OTDOA) method and 5G Positioning Reference Signal (PRS) are used. Simulations run using MATLAB, based on existing code developed for 5G positioning by extending it for Non Line of Sight (NLOS) link detection and base station exclusion algorithms. Performance analysis for different configurations is completed. Results show that efficient NLOS detection improves positioning accuracy and implementing a base station exclusion algorithm helps for further increase.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Quantifying global patterns of terrestrial nitrogen (N) cycling is central to predicting future patterns of primary productivity, carbon sequestration, nutrient fluxes to aquatic systems, and climate forcing. With limited direct measures of soil N cycling at the global scale, syntheses of the (15)N:(14)N ratio of soil organic matter across climate gradients provide key insights into understanding global patterns of N cycling. In synthesizing data from over 6000 soil samples, we show strong global relationships among soil N isotopes, mean annual temperature (MAT), mean annual precipitation (MAP), and the concentrations of organic carbon and clay in soil. In both hot ecosystems and dry ecosystems, soil organic matter was more enriched in (15)N than in corresponding cold ecosystems or wet ecosystems. Below a MAT of 9.8°C, soil δ(15)N was invariant with MAT. At the global scale, soil organic C concentrations also declined with increasing MAT and decreasing MAP. After standardizing for variation among mineral soils in soil C and clay concentrations, soil δ(15)N showed no consistent trends across global climate and latitudinal gradients. Our analyses could place new constraints on interpretations of patterns of ecosystem N cycling and global budgets of gaseous N loss.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

In this work, the volatile chromatographic profiles of roasted Arabica coffees, previously analyzed for their sensorial attributes, were explored by principal component analysis. The volatile extraction technique used was the solid phase microextraction. The correlation optimized warping algorithm was used to align the gas chromatographic profiles. Fifty four compounds were found to be related to the sensorial attributes investigated. The volatiles pyrrole, 1-methyl-pyrrole, cyclopentanone, dihydro-2-methyl-3-furanone, furfural, 2-ethyl-5-methyl-pyrazine, 2-etenyl-n-methyl-pyrazine, 5-methyl-2-propionyl-furan compounds were important for the differentiation of coffee beverage according to the flavour, cleanliness and overall quality. Two figures of merit, sensitivity and specificity (or selectivity), were used to interpret the sensory attributes studied.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Universidade Estadual de Campinas . Faculdade de Educação Física

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Universidade Estadual de Campinas . Faculdade de Educação Física

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Este trabalho avalia o desempenho de previsões sazonais do modelo climático regional RegCM3, aninhado ao modelo global CPTEC/COLA. As previsões com o RegCM3 utilizaram 60 km de resolução horizontal num domínio que inclui grande parte da América do Sul. As previsões do RegCM3 e CPTEC/COLA foram avaliadas utilizando as análises de chuva e temperatura do ar do Climate Prediction Center (CPC) e National Centers for Enviromental Prediction (NCEP), respectivamente. Entre maio de 2005 e julho de 2007, 27 previsões sazonais de chuva e temperatura do ar (exceto a temperatura do CPTEC/COLA, que possui 26 previsões) foram avaliadas em três regiões do Brasil: Nordeste (NDE), Sudeste (SDE) e Sul (SUL). As previsões do RegCM3 também foram comparadas com as climatologias das análises. De acordo com os índices estatísticos (bias, coeficiente de correlação, raiz quadrada do erro médio quadrático e coeficiente de eficiência), nas três regiões (NDE, SDE e SUL) a chuva sazonal prevista pelo RegCM3 é mais próxima da observada do que a prevista pelo CPTEC/COLA. Além disto, o RegCM3 também é melhor previsor da chuva sazonal do que da média das observações nas três regiões. Para temperatura, as previsões do RegCM3 são superiores às do CPTEC/COLA nas áreas NDE e SUL, enquanto o CPTEC/COLA é superior no SDE. Finalmente, as previsões de chuva e temperatura do RegCM3 são mais próximas das observações do que a climatologia observada. Estes resultados indicam o potencial de utilização do RegCM3 para previsão sazonal, que futuramente deverá ser explorado através de previsão por conjunto.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

The purpose of this study was to measure the prevalence of global and leisure-time physical activity and associated factors in the elderly. This was a population-based cross-sectional study covering a multiple-stage sample of 1,950 subjects 60 years or older living in areas of São Paulo State, Brazil. Prevalence of global physical activity (assessed through the short version of the International Physical Activity Questionnaire - IPAQ) was 73.9%, and prevalence of leisure-time physical activity was 28.4%. The results highlight the differences between factors associated with global and leisure-time physical activities. The social groups most prone to overall sedentary lifestyle and especially to lack of leisure-time physical activity should be the main targets of health policies aimed at promoting healthier lifestyles.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

OBJETIVOS: avaliar a prevalência de obesidade global e obesidade abdominal, em mulheres pós-menopausa, segundo o grau de instrução, nível de atividade física, uso de terapia hormonal na menopausa (THM) e paridade. MÉTODOS: foram entrevistadas 157 mulheres na pós-menopausa, atendidas em dois ambulatórios públicos da cidade de São Paulo, São Paulo, Brasil. A obesidade foi determinada segundo o índice de massa corporal (IMC > 30,0) e segundo o percentual de gordura corporal (%GC > 37%). A obesidade abdominal foi determinada pela relação cintura-quadril (RCQ > 0,85). RESULTADOS: a prevalência de obesidade global foi 34,4% (segundo o IMC) e de 40,1% (segundo o %GC). A prevalência de obesidade abdominal foi de 73,8%. Grande parte das entrevistadas referiu até sete anos de instrução formal (47,8%), foi considerada sedentária ou insuficientemente ativa (52,3%) e nunca tinha utilizado THM oral ou tinha utilizado por menos de 12 meses (72,0%). Foi constatada maior prevalência de obesidade global no grupo de mulheres sedentárias ou insuficientemente ativas e no grupo de não usuárias de THM (p<0,05). Quanto à obesidade abdominal, fator de risco para doenças cardiovasculares (DCV), apenas o grau de instrução mostrou-se associado à RCQ (p<0,05). CONCLUSÕES: mulheres após a menopausa, fisicamente ativas e usuárias de THM exibiram menor prevalência de obesidade global, porém a prevalência de obesidade abdominal foi alta e ainda maior nas mulheres com menor grau de instrução

Relevância:

20.00% 20.00%

Publicador:

Resumo:

In this paper we study the existence of global solutions for a class of abstract functional differential equation with nonlocal conditions. An application is considered.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Background: Xylella fastidiosa, a Gram-negative fastidious bacterium, grows in the xylem of several plants causing diseases such as citrus variegated chlorosis. As the xylem sap contains low concentrations of amino acids and other compounds, X. fastidiosa needs to cope with nitrogen limitation in its natural habitat. Results: In this work, we performed a whole-genome microarray analysis of the X. fastidiosa nitrogen starvation response. A time course experiment (2, 8 and 12 hours) of cultures grown in defined medium under nitrogen starvation revealed many differentially expressed genes, such as those related to transport, nitrogen assimilation, amino acid biosynthesis, transcriptional regulation, and many genes encoding hypothetical proteins. In addition, a decrease in the expression levels of many genes involved in carbon metabolism and energy generation pathways was also observed. Comparison of gene expression profiles between the wild type strain and the rpoN null mutant allowed the identification of genes directly or indirectly induced by nitrogen starvation in a sigma(54)-dependent manner. A more complete picture of the sigma(54) regulon was achieved by combining the transcriptome data with an in silico search for potential sigma(54)-dependent promoters, using a position weight matrix approach. One of these sigma(54)-predicted binding sites, located upstream of the glnA gene (encoding glutamine synthetase), was validated by primer extension assays, confirming that this gene has a sigma(54)-dependent promoter. Conclusions: Together, these results show that nitrogen starvation causes intense changes in the X. fastidiosa transcriptome and some of these differentially expressed genes belong to the sigma(54) regulon.