1,594 research outputs found

    Assessment of project portfolio management on public research institutions: a case applied to agricultural research in Brazil.

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    Portfolio management can be a major tool for selecting projects where scarce public resources will be invested with the best returns for society. This study aimed to propose a model for diagnostic of project portfolio management (PPM) on public research institutions and to apply it over a case study. The methodology used was literature review and a single case study applied to Embrapa Beef Cattle, a Research Center of the Brazilian Agricultural Research Corporation (EMBRAPA). Conclusion is that the model can be used for the diagnostic of PPM on public research institutions. The importance given to strategic orientation by the studied research center became evident throughout the work. This need to integrate project portfolio with institutional strategy influences the three dimensions of the model. From the results obtained it becomes evident that putting into practice an effective strategic planning for public research institutions is paramount for project portfolio success. The tool can be enhanced through incorporation of new criteria and dimensions, serving as a starting point for further work focused on public management

    Proposta de modelo para diagnóstico da gestão de portfólio de projetos em instituições públicas de pesquisa: estudo de caso na pesquisa agropecuária.

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    Dessa forma, o objetivo deste trabalho é propor um modelo para diagnóstico da gestão de portfólio de projetos em instituições públicas de pesquisa e aplicá-lo a um caso prático

    Manual do módulo de estágios do Sistema Integrado de Gestão e Pesquisa da Embrapa Gado de Corte: Pandora.

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    Considerando-se um contexto de busca de recursos humanos qualificados e dispostos a inovar e aprender foi criado o Módulo de Estágios do sistema Integrado de Gestão e Pesquisa da Embrapa Gado de Corte ? Pandora ? no qual este Manual está baseado. Buscando facilitar a compreensão dos usuários em relação à operacionalização desse sistema, o Manual divide-se em duas partes, uma referente aos procedimentos dos estagiários e outra, dos supervisores. Dessa forma, são utilizadas telas do sistema com os respectivos procedimentos para facilitar a compreensão dos usuários na utilização das ferramentas disponíveis.bitstream/item/77526/1/DOC191.pd

    Linear Confinement for Mesons and Nucleons in AdS/QCD

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    By using a new parametrization of the dilaton field and including a cubic term in the bulk scalar potential, we realize linear confinement in both meson and nucleon sectors within the framework of soft-wall AdS/QCD. At the same time this model also correctly incorporate chiral symmetry breaking. We compare our resulting mass spectra with experimental data and find good agreement between them.Comment: 14 pages, published version in JHE

    Preparation and control of a cavity-field state through atom-driven field interaction: towards long-lived mesoscopic states

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    The preparation of mesoscopic states of the radiation and matter fields through atom-field interactions has been achieved in recent years and employed for a range of striking applications in quantum optics. Here we present a technique for the preparation and control of a cavity mode which, besides interacting with a two-level atom, is simultaneously submitted to linear and parametric amplification processes. The role of the amplification-controlling fields in the achievement of real mesoscopic states, is to produce highly-squeezed field states and, consequently, to increase both: i) the distance in phase space between the components of the prepared superpositions and ii) the mean photon number of such superpositions. When submitting the squeezed superposition states to the action of similarly squeezed reservoirs, we demonstrate that under specific conditions the decoherence time of the states becomes independent of both the distance in phase space between their components and their mean photon number. An explanation is presented to support this remarkable result, together with a discussion on the experimental implementation of our proposal. We also show how to produce number states with fidelities higher than those derived as circular states

    Tannin-based product in feedlot diet as a strategy to reduce enteric methane emissions of Nellore cattle finished under tropical conditions.

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    Abstract: A total of 120 Nellore bulls, [initial body weight (BW) = 307 ± 11.6 kg and 12 mo of age] were allocated into 12 collective pens (10 bulls per pen) in a commercial feedlot to evaluate the effects of a specific blend of tannin and saponins on enteric methane (CH4) emissions. The study was a completely randomized design, in which pens were considered the experimental units (N = 6 pens per treatment) and were randomly allocated into one of two treatments: 1) Control (CON), a basal diet with monensin supplementation (25 mg/kg dry matter [DM]; Rumensin, Elanco Animal Health, Greenfield, IN, USA), or 2) Control + a specific blend of tannin and saponins (TAN; 7 g/kg DM; composed of quebracho and chestnut tannin extracts along with carriers from cereals rich in saponins; SilvaFeed BX, Silvateam, San Michele Mondovi, CN, Italy). After the adaptation period (20 d), the experiment was divided into two phases: growing phase (21 to 53 d; total of 33 d) and fattening phase (54 to 139 d; total of 86 d). Enteric methane emissions were estimated using the sulfur hexafluoride (SF6) tracer gas technique. Interactions between treatment and period (growing vs. fattening) were detected for daily CH4 emissions, in which animals fed TAN reduced CH4 emissions by 17.3% during the fattening period compared to bulls fed CON (P = 0.05). In addition, bulls fed TAN had lower CH4 emissions expressed by dry matter intake (DMI) during the fattening period compared to bulls fed CON (P = 0.06). The findings presented herein indicate that a specific blend of tannin and saponins can be used as a strategy to reduce enteric CH4 emissions and its intensity of Nellore bulls finished in feedlot systems under tropical conditions

    Observation of an Excited Bc+ State

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    Using pp collision data corresponding to an integrated luminosity of 8.5 fb-1 recorded by the LHCb experiment at center-of-mass energies of s=7, 8, and 13 TeV, the observation of an excited Bc+ state in the Bc+π+π- invariant-mass spectrum is reported. The observed peak has a mass of 6841.2±0.6(stat)±0.1(syst)±0.8(Bc+) MeV/c2, where the last uncertainty is due to the limited knowledge of the Bc+ mass. It is consistent with expectations of the Bc∗(2S31)+ state reconstructed without the low-energy photon from the Bc∗(1S31)+→Bc+γ decay following Bc∗(2S31)+→Bc∗(1S31)+π+π-. A second state is seen with a global (local) statistical significance of 2.2σ (3.2σ) and a mass of 6872.1±1.3(stat)±0.1(syst)±0.8(Bc+) MeV/c2, and is consistent with the Bc(2S10)+ state. These mass measurements are the most precise to date

    Quantum numbers of the X(3872)X(3872) state and orbital angular momentum in its ρ0Jψ\rho^0 J\psi decay

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    Angular correlations in B+X(3872)K+B^+\to X(3872) K^+ decays, with X(3872)ρ0J/ψX(3872)\to \rho^0 J/\psi, ρ0π+π\rho^0\to\pi^+\pi^- and J/ψμ+μJ/\psi \to\mu^+\mu^-, are used to measure orbital angular momentum contributions and to determine the JPCJ^{PC} value of the X(3872)X(3872) meson. The data correspond to an integrated luminosity of 3.0 fb1^{-1} of proton-proton collisions collected with the LHCb detector. This determination, for the first time performed without assuming a value for the orbital angular momentum, confirms the quantum numbers to be JPC=1++J^{PC}=1^{++}. The X(3872)X(3872) is found to decay predominantly through S wave and an upper limit of 4%4\% at 95%95\% C.L. is set on the fraction of D wave.Comment: 16 pages, 4 figure
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