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

Regional Geology of the Low-Permeability Gas-Bearing Cleveland Formation, Western Anadarko Basin, Texas Panhandle: Lithologic and Depositional Facies, Structure, and Sequence Stratigraphy

The Upper Pennsylvanian (lower Missourian) Cleveland Formation produces gas from low-permeability ("tight") sandstone reservoirs in the western Anadarko Basin of the northeastern Texas Panhandle. In this six-county region, these reservoirs had produced more than 412 Bcf of natural gas through December 31, 1989. Because of their typically low permeability, the Cleveland sandstones require acidizing and hydraulic fracture treatment to produce gas at economic rates. Since 1982, the Gas Research Institute has supported geological investigations throughout the United States to develop the scientific and technological knowledge for producing from low-permeability, gas-bearing sandstones. As part of this program and the GRI Tight Gas Sands project, the Bureau of Economic Geology has been conducting research on low-permeability sandstones in the Cleveland Formation and on several other sandstone units of similar character in Texas and Wyoming. This effort is part of a broader program to increase the understanding and ultimate utilization of gas resources in these low-permeability formations through regional and field-specific geology, formation evaluation, and reservoir engineering. This report summarizes findings on the regional geology, depositional setting, sequence stratigraphy, and petrology of the Cleveland Formation. Geological research on the Cleveland began with an effort to choose a formation in which to drill Staged Field Experiment (SFE) well number 4, the latest in a series of SFE wells drilled since 1986 to conduct geological and engineering research on low-permeability gas reservoirs. Although the Cleveland Formation was not chosen for SFE No. 4, investigation of this low-permeability, gas-bearing sandstone continued with the drilling of cooperative wells in the unit. Because the Cleveland Formation contains an estimated 38 Tcf of gas in place, development of advanced technology and understanding that can be applied to this and other tight gas formations will have a positive impact on gas supply by improving gas recovery and lowering completion costs.Bureau of Economic Geolog