Inovações tecnológicas no setor de telecomunicações no Brasil: desafios e oportunidades do LTE para expansão da telefonia móvel.

O telefone celular teve uma grande evolução nos últimos anos, o que antes era utilizado exclusivamente para transmissão de voz, hoje tem características avançadíssimas incluindo várias evoluções tecnológicas. Dentro deste aspecto, a inovação que o LTE (Long Term Evolution) vem demonstrando em suas características realmente se destacam em relação as tecnologias que a antecederam e representa grande evolução se comparada com as outras. Foi desenvolvida no âmbito do projeto 3GPP e (3rd Generation Partners Project) promovido pelo Instituto Europeu de Normalização na área de Telecomunicações ETSI (European Telecommunications Standard Institute). As operadoras que demonstram interesse em disponibilizar esta tecnologia buscam introduzir a flexibilidade do LTE para ir ao encontro dos objetivos de suas redes existentes, espectro e negócios para banda larga móvel e serviços multimídia. O LTE promete taxas de download de 326,4Mbps, taxas de upload de 86,4Mbps, RTT ( ROUND TRIP TIME ) menos de 10 mile segundos e raio das células podendo atingir até 100km. O sistema 4G (LTE) é um sistema integrado completamente baseado em IP, que é resultado de tecnologias conectadas por fios e sem fios disponibilizando um custo acessível, atendendo as exigências de uma rede de comunicação (Wireless), serviços de transferência de mensagens multimídias, conversa com vídeo, televisão móvel de alta definição, serviços mínimos como voz e dados entre outras vantagens. Desta forma, este estudo tem por objetivo analisar quais são as oportunidades e os desafios no mercado de telefonia móvel de Telecomunicações ao implantar o sistema de tecnologia LTE demonstrando o benefício dos fabricantes e operadoras no sentido econômico e tecnológico.

The impact of negative social environmental events on the market value of supply chain partners

The present work analyzes the impact of negative social / environmental events on the market value of supply chain partners. The study offers a contextualized discussion around important concepts which are largely employed on the Operations Management and Management literature in general. Among them, the developments of the literature around supply chains, supply chain management, corporate social responsibility, sustainable development and sustainable supply chain management are particularly addressed, beyond the links they share with competitive advantage. As for the theoretical bases, the study rests on the Stakeholder Theory, on the discussion of the efficient-market hypothesis and on the discussion of the adjustment of stock prices to new information. In face of such literature review negative social / environmental events are then hypothesized as causing negative impact in the market value of supply chain partners. Through the documental analysis of publicly available information around 15 different cases (i.e. 15 events), 82 supply chain partners were identified. Event studies for seven different event windows were conducted on the variation of the stock price of each supply chain partner, valuing the market reaction to the stock price of a firm due to triggering events occurred in another. The results show that, in general, the market value of supply chain partners was not penalized in response to such announcements. In that sense, the hypothesis derived from the literature review is not confirmed. Beyond that, the study also provides a critical description of the 15 cases, identifying the companies that have originated such events and their supply chain partners involved.

Ginástica e ética na escola: Apontamentos para compreender a convivênca humana.

The daily teaching invokes us to answer questions that surround the educational action, they are ethic and political exercises of us teachers, considering the responsibility that is presented to us in circumstance of perspective that we create as for our students´ formation. Considering the public school Terezinha Paulino as stage of the daily teaching which we invested, and finally, the school gymnastic group (GGTP), as pedagogical practice specifically attended during this study, we launch the following questions: 1. What are the ethic indicators present in the experience lived by GGTP members? 2. What s the meaning of these indicators for the GGTP members? 3. Do these meanings configure a socio-political dimension of the individuals involved formation ? What socio-political dimension is that? And What is its contribution to think of Physical Education in school? From these issues, we highlight our goals in this research: investigate the educational experience lived in GGTP, with a focus on the ethical elements that characterize and reflect the relationship of these elements in the socio-political dimension of Physical Education in school. To answer the initial questions and achieve our goals, we use the Content Analysis (BARDIN, 2004) as a methodological contribution of this research. From this methodological contribution we got two strands of the discussion here related: relational behavior of living and undesirable relational conduct and non-social. typical examples of good living are: union, cooperation, solidarity, fraternity, conversation, dialogue, love, trust, responsibility, commitment, dedication, application, respect, partition, sharing, gratitude, companionship, kindness Correspond to undesirable behaviors conduct: intrigue, strife (dispute), vanity, arrogance, anger, rage, fury, nervousness, anxiety and fear. Permeates the categories discussion, The group of knowledge produced by different authors, Humberto Maturana predominate among them, sometimes related to some of its main partners, , José Varela, Gerda Verden-Zöller and Sima Nisis de Rezepka. Although less frequent, we broach other authors, including Edgar Morin and Paulo Freire, to enlarge, articulate, and thus contribute to support the notes, contents of this study. Besides the introductory chapter, is the content of this dissertation: ethics: textual understanding, the methodological way; relational behaviors of living; undesirable conduct relational and non-social; gymnastics as an ethical and political bet on training human. In ethics: textual understandings, we make a brief introduction to distinguish the ethical field which we are advancing; In the methodology way, we briefly describe the implementation of the analysis content (BARDIN,2007); in relational behaviors of living, as well as, in undesirable relational conduct and non-social, we point out the meanings discussing them supported on theoretical contribution of this research. Finally, in gymnastics as an ethical and political bet on training human, we point out some possibilities for the gymnastic practice and physical education at school, as well as to think about education by training human bias.

Search for heavy lepton partners of neutrinos in proton-proton collisions in the context of the type III seesaw mechanism

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

The role of multiple partners in a digestive mutualism with a protocarnivorous plant

Background and aimsThe protocarnivorous plant Paepalanthus bromelioides (Eriocaulaceae) is similar to bromeliads in that this plant has a rosette-like structure that allows rainwater to accumulate in leaf axils (i.e. phytotelmata). Although the rosettes of P. bromelioides are commonly inhabited by predators (e.g. spiders), their roots are wrapped by a cylindrical termite mound that grows beneath the rosette. In this study it is predicted that these plants can derive nutrients from recycling processes carried out by termites and from predation events that take place inside the rosette. It is also predicted that bacteria living in phytotelmata can accelerate nutrient cycling derived from predators.MethodsThe predictions were tested by surveying plants and animals, and also by performing field experiments in rocky fields from Serra do Cipó, Brazil, using natural abundance and enriched isotopes of 15N. Laboratory bioassays were also conducted to test proteolytic activities of bacteria from P. bromelioides rosettes.Key ResultsAnalyses of 15N in natural nitrogen abundances showed that the isotopic signature of P. bromelioides is similar to that of carnivorous plants and higher than that of non-carnivorous plants in the study area. Linear mixing models showed that predatory activities on the rosettes (i.e. spider faeces and prey carcass) resulted in overall nitrogen contributions of 26·5 % (a top-down flux). Although nitrogen flux was not detected from termites to plants via decomposition of labelled cardboard, the data on 15N in natural nitrogen abundance indicated that 67 % of nitrogen from P. bromelioides is derived from termites (a bottom-up flux). Bacteria did not affect nutrient cycling or nitrogen uptake from prey carcasses and spider faeces.ConclusionsThe results suggest that P. bromelioides derive nitrogen from associated predators and termites, despite differences in nitrogen cycling velocities, which seem to have been higher in nitrogen derived from predators (leaves) than from termites (roots). This is the first study that demonstrates partitioning effects from multiple partners in a digestion-based mutualism. Despite most of the nitrogen being absorbed through their roots (via termites), P. bromelioides has all the attributes necessary to be considered as a carnivorous plant in the context of digestive mutualism. © 2012 The Author. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved.

En busca de la equidad: las mujeres como actores sociales en el desarrollo del Caribe = In search of social equity: women as social partners in Caribbean development

Incluye Bibliografía

Report of the planning meeting of partners of the Caribbean Information Societies Measurement Initiative

The Planning Meeting of Partners was organized jointly by the Economic Commission for Latin America and the Caribbean (ECLAC) Subregional Headquarters for the Caribbean, the Observatory for the Information Society in Latin America and the Caribbean (OSILAC - an ECLAC project supported by the International Development Research Centre (IDRC), the University of West Indies (UWI), St. Augustine Campus and the Telecommunications Policy and Management Programme, Mona School of Business at UWI, Jamaica. The Caribbean Information Societies Measurement Initiative (CISMI) is a component of the research proposal entitled “Networks for Development: The Caribbean ICT Research Programme”, recently submitted to IDRC for funding approval. The main objective of this programme is to “promote multi-stakeholder knowledge exchange and dialogue about the potential contribution of Information and Communications Technology for economic development and poverty alleviation in the Caribbean” The proposed budget for the CISMI component within the aforementioned proposal is US$ 150,000. The main objectives of the CISMI component are twofold: (a) to conduct a comprehensive Information and Communications Technology (ICT) survey in the Caribbean subregion to cover baseline information needs for studies and analysis from different partners involved in the construction of the Caribbean Information Societies; and (b) to analyze the household-level data, including the status of broadband and mobile usage in selected Caribbean countries in order to promote evidence-based policy planning and implementation with respect to ICT development and its impact on social and economic development in the subregion. The Planning Meeting of Partners was convened to: (a) discuss the CISMI component partnership arrangements, (b) discuss the design and implementation mechanisms of the survey instrument (questionnaire); (c) inform and engage potential key stakeholders; and (d) obtain information from potential service providers (survey companies). The Planning Meeting of Partners took place on 28 and 29 September 2009 in Port of Spain, Trinidad and Tobago.

Desempenho oral em português para falantes de outras línguas: da avaliação à aprendizagem de línguas estrangeiras em contexto online

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Search for Top-Quark Partners with Charge 5/3 in the Same-Sign Dilepton Final State

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Colorless top partners, a 125 GeV Higgs boson, and the limits on naturalness

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Family, Youth and Community Partners Luncheon With Senators

Good afternoon. I am so pleased to be here with you today. I welcome this opportunity to talk with you about how University of Nebraska Cooperative Extension, part of the Institute of Agriculture and Natural Resources at the University of Nebraska – Lincoln, works with Nebraska’s at-risk families. I’m extremely proud of our work to help families meet their needs and develop and strengthen skills they can use to better share in Nebraska’s good life.

M-ficolin and leukosialin (CD43): new partners in neutrophil adhesion

M-ficolin specificity for sialylated ligands prompted us to investigate its interactions with the main membrane sialoprotein of human neutrophils, CD43. rM-ficolin bound CD43 and prevented the access of anti-CD43 mAb. Moreover, rM-ficolin reacted exclusively with CD43 on Western blots of neutrophil lysate. We confirmed that M-ficolin is secreted by fMLP-activated neutrophils, and this endogenous M-ficolin also binds to CD43 and competes with anti-CD43 mAb. Anti-CD43 antibody cross-linking or fMLP resulted in M-ficolin and CD43 colocalization on polarized neutrophils. The binding of rM-ficolin to resting neutrophils induced cell polarization, adhesion, and homotypic aggregation as anti-CD43 mAb. The M-ficolin Y271F mutant, unable to bind sialic acid, neither reacted with neutrophils nor modulated their functions. Finally, rM-ficolin activated the lectin complement pathway on neutrophils. These results emphasize a new function of M-ficolin, different from ficolin pathogen recognition, i.e., a participation to neutrophil adhesion potentially important in early inflammation, as nanomolar agonist concentrations are sufficient to mobilize M-ficolin to the neutrophil surface. This multivalent lectin could then endow the antiadhesive CD43, essentially designed to prevent leukocyte aggregation in the blood flow, with new adhesive properties and explain, at least in part, dual-adhesive/antiadhesive roles of CD43 in neutrophil recruitment. J. Leukoc. Biol. 91: 469-474; 2012.

Number of recent sexual partners among blood donors in Brazil: associations with donor demographics, donation characteristics, and infectious disease markers

BACKGROUND: Brazilian blood centers ask candidate blood donors about the number of sexual partners in the past 12 months. Candidates who report a number over the limit are deferred. We studied the implications of this practice on blood safety. STUDY DESIGN AND METHODS: We analyzed demographic characteristics, number of heterosexual partners, and disease marker rates among 689,868 donations from three Brazilian centers between July 2007 and December 2009. Donors were grouped based on maximum number of partners allowed in the past 12 months for each center. Chi-square and logistic regression analysis were conducted to examine associations between demographic characteristics, number of sex partners, and individual and overall positive markers rates for human immunodeficiency virus (HIV), human T-lymphotropic virus Types 1 and 2, hepatitis B virus, hepatitis C virus, and syphilis. RESULTS: First-time, younger, and more educated donors were associated with a higher number of recent sexual partners, as was male sex in Sao Paulo and Recife (p < 0.001). Serologic markers for HIV and syphilis and overall were associated with multiple partners in Sao Paulo and Recife (p < 0.001), but not in Belo Horizonte (p = 0.05, p = 0.94, and p = 0.75, respectively). In logistic regression analysis, number of recent sexual partners was associated with positive serologic markers (adjusted odds ratio [AOR], 1.2-1.5), especially HIV (AOR, 1.9-4.4). CONCLUSIONS: Number of recent heterosexual partners was associated with HIV positivity and overall rates of serologic markers of sexually transmitted infections. The association was not consistent across centers, making it difficult to define the best cutoff value. These findings suggest the use of recent heterosexual contacts as a potentially important deferral criterion to improve blood safety in Brazil.