997 resultados para 1727


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"Mr. Joseph Robertson, whom the Committee selected as editor, had planned the outline of the whole work, and under his superintendence about a fourth part of the first volume was printed. When he was called to an employment which left him no leisure for such work, its completion was entrusted to me."--Pref., signed: C. Innes.

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v. 1. Narrative.--v. 2. Genealogy and appendix.

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Edited and published by authority of the Library Board, Virginia State Library.

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Extract from Bulletin de la Société libre d'émulation du commerce et de l'industrie de la Seine-Inférieur (2e partie 1884-1885)"

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This paper presents a novel adaptive control scheme. with improved convergence rate, for the equalization of harmonic disturbances such as engine noise. First, modifications for improving convergence speed of the standard filtered-X LMS control are described. Equalization capabilities are then implemented, allowing the independent tuning of harmonics. Eventually, by providing the desired order vs. engine speed profiles, the pursued sound quality attributes can be achieved. The proposed control scheme is first demonstrated with a simple secondary path model and, then, experimentally validated with the aid of a vehicle mockup which is excited with engine noise. The engine excitation is provided by a real-time sound quality equivalent engine simulator. Stationary and transient engine excitations are used to assess the control performance. The results reveal that the proposed controller is capable of large order-level reductions (up to 30 dB) for stationary excitation, which allows a comfortable margin for equalization. The same holds for slow run-ups ( > 15s) thanks to the improved convergence rate. This margin, however, gets narrower with shorter run-ups (<= 10s). (c) 2010 Elsevier Ltd. All rights reserved.

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OBJECTIVE. The objective of our study was to describe the T1 and T2 signal intensity characteristics of papillary renal cell carcinoma (RCC) and clear cell RCC with pathologic correlation. MATERIALS AND METHODS. Of 539 RCCs, 49 tumors (21 papillary RCCs and 28 clear cell RCCs) in 45 patients were examined with MRI. Two radiologists retrospectively and independently assessed each tumor`s T1 and T2 signal intensity qualitatively and quantitatively (i.e., the signal intensity [SI] ratio [tumor SI/renal cortex SI]). Of the 49 tumors, 37 (76%) were assessed for pathology features including tumor architecture and the presence of hemosiderin, ferritin, necrosis, and fibrosis. MRI findings and pathology features were correlated. Statistical methods included summary statistics and Wilcoxon`s rank sum test for signal intensity, contingency tables for assessing reader agreement, concordance rate between the two readers with 95% CIs, and Fisher`s exact test for independence, all stratified by RCC type. RESULTS. Papillary RCCs and clear cell RCCs had a similar appearance and signal intensity ratio on T1-weighted images. On T2-weighted images, most papillary RCCs were hypointense (reader 1, 13/21; reader 2, 14/21), with an average mean signal intensity ratio for both readers of 0.67 +/- 0.2, and none was hyperintense, whereas most clear cell RCCs were hyperintense (reader 1, 21/28; reader 2, 17/28), with an average mean signal intensity ratio for both readers of 1.41 +/- 0.4 (p < 0.05). A tumor T2 signal intensity ratio of <= 0.66 had a specificity of 100% and sensitivity of 54% for papillary RCC. Most T2 hypointense tumors exhibited predominant papillary architecture; most T2 hyperintense tumors had a predominant nested architecture (p < 0.05). CONCLUSION. On T2-weighted images, most papillary RCCs are hypointense and clear cell RCCs, hyperintense. The T2 hypointense appearance of papillary RCCs correlated with a predominant papillary architecture at pathology.

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Este artigo visa compreender at?? que ponto as pr??ticas gerenciais incorporam as dimens??es da satisfa????o e motiva????o no trabalho de servidores p??blicos na atualidade. Aborda os modelos de administra????o burocr??tica e gerencial, exp??e as disfun????es do modelo ideal da burocracia weberiana, apresenta a motiva????o para o trabalho e suas implica????es, e evidencia a carreira de Especialista em Pol??ticas P??blicas e Gest??o Governamental (EPPGG) no intuito de apresentar uma alternativa poss??vel de proporcionar satisfa????o e motiva????o no trabalho, por meio do enriquecimento do cargo. A metodologia consta de uma pesquisa qualitativa, na qual se fez uso de entrevistas semiestruturadas aplicadas junto a tr??s EPPGG. Utilizou-se da an??lise de conte??do com uso da t??cnica de categoriza????o para a an??lise os dados. Os resultados demonstraram a satisfa????o e motiva????o dos gestores, a preval??ncia da administra????o burocr??tica com fortes ind??cios da administra????o gerencial e aus??ncia de disfun????es burocr??ticas. Evidenciaram que o modelo da nova gest??o p??blica, uma vez implantado conforme descrito na teoria, pode combater disfun????es burocr??ticas e contribuir para a satisfa????o e motiva????o dos servidores p??blicos. Destaca-se a relev??ncia de estudos posteriores, visto que foram apontadas diversidades de condi????es de trabalho de ??rg??o para ??rg??o e dificuldades enfrentadas no in??cio da carreira.

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Mestrado em Radiações Aplicadas às Tecnologias da Saúde. Área de especialização: Protecção contra Radiações

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Purpose: Systematic review to identify the factors associated to the quality of life (QOL) of the caregivers of people with aphasia (PWA). Methods: Studies were searched using Medline, Pubmed, Cochrane Library, CINAHL, PsycINFO and Web of Science databases. Peer-reviewed papers that studied the QOL of PWA’s caregivers or the consequences of aphasia in caregivers’ life were included. Findings were extracted from the studies that met the inclusion criteria. Results: No data is available reporting particularly the QOL of PWA caregivers’ or their QOL predictors. Nevertheless, it was possible to extract aspects related to QOL from the studies that report the consequences of aphasia, and life changes in PWA’s caregivers. Nine (9) studies including PWA’s caregivers were found, but only 5 reported data separately on them. Methodological heterogeneity impedes cross-study comparisons, although some considerations can be made. PWA’s caregivers reported life changes such as: loss of freedom; social isolation; new responsibilities; anxiety; emotional loneliness; need for support and respite. Conclusions: Changes in social relationships, in emotional status, increased burden and need for support and respite were experienced by PWA’s caregivers. Stroke QOL studies need to include PWA caregivers’ and report separately on them. Further research is needed in this area in order to determine their QOL predictors and identify what interventions and referrals better suit their needs.

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The virtual enterprise paradigm seems a fit response to face market instability and the volatile nature of business opportunities increasing enterprise’s interest in similar forms of networked organisations. The dynamic environment of a virtual enterprise requires that partners in the consortium own reconfigurable shop floors. This paper presents new approaches to shop floor control that meet the requirements of the new industrial paradigms and argues on work re-organization at shop floor level.