Stability control of nonlinear micromechanical resonators under simultaneous primary and superharmonic resonances

Fast effects of a slow excitation on the main resonance of a nonlinear micromechanical resonator are analytically and experimentally investigated. We show, in particular, how the bifurcation topology of an undesirable unstable behavior is modified when the resonator is simultaneously actuated at its primary and superharmonic resonances. A stabilization mechanism is proposed and demonstrated by increasing the superharmonic excitation

Tricks or Treats

Learn about open access tools and tricks while enjoying some Halloween treats

The legend of zelda : uma tradução comentada do jogo eletrônico para o português

Este trabalho de conclusão de curso tem como objetivo apresentar uma tradução comentada do jogo eletrônico The Legend of Zelda, lançado em 1986 em japonês. Com o passar dos anos, o jogo foi traduzido para diversas línguas, incluindo o inglês. Neste trabalho, propomos uma primeira tradução para o português brasileiro. Para isso, este estudo visa introduzir The Legend of Zelda ao público brasileiro através de uma abordagem tradutória funcionalista, combinando teorias de tradução com análise prática e contribuindo para o avanço teórico da tradução de jogos. Também serão discutidos alguns aspectos da tradução do jogo original em japonês para a língua inglesa. Os resultados indicam que a aplicação da abordagem funcionalista, estratégias adequadas de tradução, análise do texto-fonte e reflexão crítica contribuem para a elaboração de traduções precisas e adequadas ao público-alvo de jogos eletrônicos, aprofundando a compreensão da obra e promovendo sua clareza, coesão e coerência.This thesis aims to present a commented translation of the video game The Legend of Zelda, released in 1986 in Japanese. Over the years, the game has been translated into various languages, including English. In this work, we propose a first translation into Brazilian Portuguese. To do so, this study aims to introduce The Legend of Zelda to the Brazilian audience through a functionalist translation approach, combining translation theories with practical analysis and contributing to the theoretical advancement of video game translation. Some aspects of the original Japanese game's translation into English will also be discussed. The results indicate that the application of the functionalist approach, appropriate translation strategies, source text analysis, and critical reflection contribute to the elaboration of more accurate and appropriate translations for the target audience of video games, deepening the understanding of the work and promoting its clarity, cohesion, and coherence

Subsurface gas- and oil-shale samples of Texas shales from the Permian, Fort Worth, and Maverick basins and San Marcos Arch: core sampling for measured vitrintite-reflectance (Ro) determination: final technical summary report (FY 2010–2014)

Shale samples analyzed for measured vitrinite reflectance during FY 2010–2014 were collected from varying depositional basins in Texas and strata of different ages. They include the Upper Devonian and Lower Mississippian Woodford Shale (Permian Basin), the Lower Pennsylvanian Smithwick Shale (Fort Worth Basin), the Lower Permian shales and Spraberry Formation (Midland Basin), the Lower Cretaceous Pearsall Formation, and the Upper Cretaceous Eagle Ford Shale (Maverick Basin and adjacent area). Although an approximate trend of increasing vitrinite-reflectance values with depth (i.e., increasing thermal maturity, or rank) occurs in the Eagle Ford Shale of the San Marcos Arch, this pattern is not exhibited with the other units sampled. Moreover, when measured vitrinite-reflectance values are compared to calculated-Ro values of Lower Permian shales and the Spraberry Formation, consistently lower values occur with the measured-Ro data set. Sample values from the remaining three successions studied (with the possible exception of the Smithwick Shale) are characterized by similarly lower-than-expected vitrinite-reflectance values. These low values are probably a result of markedly lean successions and not of the presence of low-rank strata. (Lean = either no vitrinite was present in a sample or it was too small to be measured.) Oil- and gas-shale core samples do not appear to be ideal for measuring vitrinite reflectance primarily because of the fine-grained character of the rock, as opposed to coal, in which vitrinite is sufficiently coarse, visible, and abundant to consistently derive Ro values.Bureau of Economic Geolog