Sistema georreferenciado de monitoramento e apoio ?? decis??o da Presid??ncia da Rep??blica (Geo/PR)

Trata-se de um sistema desenvolvido para integrar informa????es em base georreferenciada e textual de diversos ??rg??os p??blicos, a fim de possibilitar an??lises gerenciais, a atua????o estrat??gica e a decis??o ministerial sobre a concess??o de ato de assentimento pr??vio, de acordo com a Lei no 6.634/79. Ao possibilitar o cruzamento de informa????es de diversos bancos de dados, em raz??o da especialidade do Gabinete de Seguran??a Institucional da Presid??ncia da Rep??blica (GSI/PR), o sistema oportuniza o diagn??stico de incongru??ncias e conflitos de atividades entre ??rg??os da Administra????o P??blica Federal indireta e o indicativo da situa????o fundi??ria do Pa??s, tanto no aspecto territorial quanto no da riqueza mineral e respectivos interessados em sua explora????o. O sistema permite que os bancos ???conversem entre si???, o que o torna um marco na hist??ria da gest??o p??blica federal, por possibilitar o conhecimento do nosso territ??rio em tempo real, com informa????es confi??veis, precisas e amig??veis geradas em banco de dados textuais associados a uma base cartogr??fica digital composta por mapas digitalizados, fotografias a??reas e imagens de sat??lites

Near-infrared third-order nonlinearity of PbO-GeO(2) films containing Cu and Cu(2)O nanoparticles

We report measurements of the nonlinear (NL) refractive index n(2) of lead-germanium films (LGFs) containing Cu and Cu(2)O nanoparticles (NPs). The thermally managed eclipse Z-scan technique with 150 fs pulses from a laser operating at 800 nm was used. The NL refractive index measured, n(2)=6.3x10(-12) cm(2)/W has electronic origin and the NL absorption coefficient alpha(2) is smaller than 660 cm/GW. The figure of merit n(2)/lambda alpha(2) is enhanced by more than two orders of magnitude in comparison with the result for the LGFs without the copper based NPs. (C) 2008 American Institute of Physics.

Frequency upconversion luminescence from Yb(+3)-Tm(+3) codoped PbO-GeO(2) glasses containing silver nanoparticles

Infrared-to-visible and infrared-to-infrared frequency upconversion processes in Yb(3+)-Tm(3+) doped PbO-GeO(2) glasses containing silver nanoparticles (NPs) were investigated. The experiments were performed by exciting the samples with a diode laser operating at 980 nm (in resonance with the Yb(3+) transition (2)F(7/2)->(2)F(5/2)) and observing the photoluminescence (PL) in the visible and infrared regions due to energy transfer from Yb(3+) to Tm(3+) ions followed by excited state absorption in the Tm3+ ions. The intensified local field in the vicinity of the metallic NPs contributes for enhancement in the PL intensity at 480 nm (Tm(3+) :(1)G(4)->(3)H(6)) and at 800 nm (Tm(3+) : (3)H(4) -> (3)H(6)). (C) 2009 American Institute of Physics. [doi:10.1063/1.3211300]

Photoluminescence enhancement by gold nanoparticles in Eu(3+) doped GeO(2)-Bi(2)O(3) glasses

We report large photoluminescence (PL) enhancement in Eu(3+)-doped GeO(2)-Bi(2)O(3) glasses containing gold nanoparticles (NPs). Growth of approximate to 1000% in the PL intensity corresponding to the Eu(3+) transition (5)D(0)->(7)F(2), at 614 nm, was observed in comparison with a reference sample that does not contain gold NPs. Other PL bands from 580 to 700 nm are also enhanced. The enhancement of the PL intensity is attributed to the increased local field in the Eu(3+) locations due to the presence of the NPs and the energy transfer from the excited NPs to the Eu(3+) ions.

Influence of the heat treatment on the nucleation of silver nanoparticles in Tm(3+) doped PbO-GeO(2) glasses

Nucleation of silver nanoparticles (NPs) in Tm(3+) doped PbO-GeO(2) (PGO) glass is reported. The influence of the heat treatment on the nucleation of silver NPs is studied by means of transmission electron microscopy and optical spectroscopy. Two heat treatment procedures were applied in order to compare their performance. Observation of infrared-to-visible frequency upconversion (UC) luminescence of Tm(3+) ions is reported and correlated with the heat-treatment procedure. Enhancement of the UC emission for samples heat treated during various time intervals is attributed to the increased local field in the vicinity of the NPs. Quenching of the UC signal was also observed and correlated with the growth of NPs amount and size.

Production and characterization of RF-sputtered PbO-GeO(2) amorphous thin films containing silver and gold nanoparticles

In the present work we report the characterization of PbO-GeO(2) films containing silver nanoparticles (NPs). Radio Frequency (RF) co-sputtering was used for deposition of amorphous films on glass substrates. Targets of 60PbO-40GeO(2) (in wt%) and bulk silver with purity of 99.99% were RF-sputtered using 3.5 m Torr of argon. The concentration of silver and gold NPs in the films was controlled varying the RF-power applied to the targets (40-50W for the PbO-GeO(2) target; 6-8 W for the metallic target). The films obtained were annealed in air at different temperatures and various periods of time. Absorption measurements have shown strong NPs surface plasmon bands. Different widths and peak wavelengths were observed, indicating that size, shape and distribution of the silver NPs are dependent on the deposition process parameters and on the annealing of the samples. X-Ray Fluorescence and Transmission Electron Microscopy were also used to characterize the samples. (C) 2010 Elsevier B.V. All rights reserved.

Influence of gold nanoparticles on optically stimulated effects in TeO(2)-ZnO and GeO(2)-PbO amorphous thin films

We have found photoinduced second harmonic generation at wavelength 1064 nm during bicolor Nd:YAG laser coherent treatment of TeO(2)-ZnO and GeO(2)-PbO amorphous films. The maximally achieved second order susceptibility was equal to about 1.02 pm/V. Correlation of the induced second order susceptibility with local sample heating and induced birefringence may indicate an occurrence of local phase transitions from amorphous glass-like phase to non-centrosymmetry metastable phases. (C) 2010 Elsevier B.V. All rights reserved.

Electron beam induced second-harmonic generation in Er(3+) doped PbO-GeO(2) glasses containing silver nanoparticles

Electron beam induced second harmonic generation (SHG) is studied in Er(3+) doped PbO-GeO(2) glasses containing silver nanoparticles with concentrations that are controlled by the heat-treatment of the samples. The SHG is observed at T = 4.2 K using a p-polarized laser beam at 1064 nm. Enhancement of the SHG is observed in the samples that are submitted to electron beam incidence. The highest value of the nonlinear susceptibility, 2.08 pm/V, is achieved for the sample heat-treated during 72 h and submitted to an electron beam current of 15 nA. The samples that were not exposed to the electron beam present a susceptibility of a parts per thousand 0.5 pm/V.

PbO-GeO(2) rib waveguides for photonic applications

This work presents for the first time to our knowledge the fabrication and characterization of rib waveguides produced with PbO-GeO(2) (PGO) thin films. The target was manufactured using pure oxides ( 60 PbO-40 GeO(2), in wt%) and amorphous thin films were produced with the RF sputtering technique. PGO thin films present small absorption in the visible and in the near infrared and refractive index of similar to 2.0. The definition of the rib waveguide structure was made using conventional optical lithography followed by plasma etching, performed in a Reactive Ion Etching (RIE) reactor. Light propagation mode in the waveguide structure was analyzed using integrated optic simulation software. Optical loss measurements were performed to determine the propagation loss at 633 nm, for ribs with height of 70 nm and width of 3-5 mu m; experimental values around 2 dB/cm were found for the propagation loss and confirmed the theoretical calculations. The results obtained demonstrate that PGO thin films are potential candidates for application in integrated optics. Published by Elsevier B.V.

A hist??ria de dois contratos: como minimizar o risco de se estabelecer um contrato com v??nculo empregat??cio no processo de adquirir bens, contratar servi??os ou implementar um projeto de constru????o

O caso trata da contrata????o de George, pesquisador que prestava servi??os a um ??rg??o p??blico canadense e que, ap??s sofrer um acidente de trabalho, foi informado de que n??o tinha direito ?? cobertura do plano de sa??de dispon??vel aos servidores. Devido ?? precariedade do contrato no qual eram estabelecidas as condi????es da rela????o de trabalho, e de ter sido comprovado que o pesquisador era tratado tal como funcion??rio do minist??rio, George teve direito aos benef??cios a que fazia jus e o ??rg??o foi multado por n??o ter recolhido os valores referentes ?? rela????o trabalhista. Essa situa????o ilustra um breve debate sobre como estabelecer bons contratos com prestadores de servi??o, em especial no que tange a contrata????es de servi??os t??cnicos especializados

A hist??ria de Andrea: como manter uma postura profissional quando n??o se sabe como agir?

Andrea, apesar de bem jovem, foi promovida ?? chefia de uma equipe com profissionais experientes e qualificados, mas as dificuldades come??aram logo. Sem saber lidar com isso, ela come??ou a se esquivar de situa????es dif??ceis, deixando a solu????o para a sua experiente equipe. Apesar disso, Andrea continuava com uma boa imagem perante seus superiores. Ao final do caso, prop??e-se um exerc??cio de avalia????o sobre as habilidades de Andrea

A hist??ria de Henrique: quando as habilidades de l??der s??o testadas ap??s a ascens??o profissional

Henrique, funcion??rio antigo de um importante programa governamental, ?? promovido ao mais alto cargo do programa. Devido a algumas posi????es e a????es ortodoxas, colegas e superiores come??aram a questionar o estilo e as iniciativas de Henrique. Ele, por sua vez, ao identificar as cr??ticas, voltou-se para fora da institui????o, transformando-se em ???embaixador do programa???, com viagens semanais e cada vez mais ausente. Seus subordinados tamb??m come??aram a se queixar e o Ministro finalmente mostrou insatisfa????o a respeito. Ao final do caso, prop??e-se um exerc??cio de avalia????o sobre as habilidades de Henrique

A hist??ria de Ricardo: raz??es pretensamente boas podem render falta de motiva????o

Ap??s torna-se Diretor-Geral da empresa, Ricardo desejava transform??-la num centro de excel??ncia. Para tanto, empenhou-se em focar em resultados financeiros, deixando de lado a criatividade e a autonomia profissional da equipe, o que gerou descontentamento e demiss??es. Ao final do caso, prop??e-se um exerc??cio de avalia????o sobre as habilidades de Ricardo

Colet??nea planejamento e or??amento governamental: volume 1: a experi??ncia brasileira em planejamento econ??mico - uma s??ntese hist??rica

O texto faz uma s??ntese did??tica dos planos de desenvolvimento e de estabiliza????o econ??mica implementados no Brasil, nas ??ltimas seis d??cadas. O relato abrange desde os primeiros exerc??cios de planejamento, no imediato p??s-Segunda Guerra Mundial, at?? os ??ltimos PPAs e, ainda, faz refer??ncias ??s tentativas de planejamento de longo prazo com o ???Brasil 2020???, no governo Fernando Henrique.

Caf?? com debate: hist??ria da administra????o p??blica brasileira

O Caf?? com Debate promovido pela ENAP reuniu dois especialistas em administra????o p??blica: o historiador e professor Frederico Lustosa, da Escola Brasileira de Administra????o P??blica e de Empresas (Ebape) da Funda????o Get??lio Vargas, e o professor Gileno Marcelino, pesquisador associado da Universidade de Bras??lia. Durante o evento, foram discutidos o processo hist??rico do Estado e da administra????o p??blica, desde a chegada da Fam??lia Real ao Brasil at?? os dias de hoje, e as perspectivas do aproveitamento desse saber para a gest??o do conhecimento na atualidade. Frederico Lustosa discorreu sobre a hist??ria da presen??a do Estado brasileiro ??? ???que est?? completando 200 anos, pois a vinda da Fam??lia Real altera tudo em rela????o ao per??odo colonial???. Ele falou da necessidade de um projeto capaz de resgatar parte desse passado. ???H?? pouca bibliografia sobre o per??odo de 1808 a 1930. O conhecimento hist??rico ?? importante para a nossa identidade cultural e precisa ser difundido???, disse. O professor prop??s uma parceria entre v??rias institui????es para realizar pesquisas sobre a historiografia da administra????o p??blica, que considerem n??o apenas aspectos personalistas, mas uma tem??tica abrangente e articulada. Em seguida, o pesquisador Gileno Marcelino contou sua experi??ncia na administra????o p??blica federal, com destaque para o per??odo em que trabalhou no Governo Sarney e desenvolveu projetos voltados ?? reforma administrativa. Citou ainda a import??ncia da cria????o da ENAP e a ??poca em que elaborou um planejamento estrat??gico para o Pal??cio do Planalto, em 1995. Ambos concordam com a necessidade de resgatar a hist??ria de nossas institui????es como uma forma de aprender com o passado, evitando repetir experi??ncias que malograram por falta de conhecimento da parte dos proponentes