Lady Gaga: Trump ‘driven by ignorance’ on gender policy

Lady Gaga has lashed out at Donald Trump and accused the US government of living in an “alternate universe” over reported plans to change how gender is defined.
Entertainment News – Latest Celebrity & Showbiz News | Sky News

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China’s Road to Electric-Car Domination Is Driven in Part by Batteries

Batteries have emerged as a critical front in China’s campaign to be the global leader in electric vehicles, but foreign auto makers and experts say it has set up the market to favor domestic suppliers.
WSJ.com: US Business

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Modeling and Optimization Methods of an Electrostatically Driven MEMS Speaker

Modeling and Optimization Methods of an Electrostatically Driven MEMS Speaker


The market for battery powered devices, such as smart-phones or tablets increases rapidly. The trend goes towards smaller and thinner cases. The main challenge is to decrease the power consumption by coincidently shrinking the device size and increasing the efficiency. Micro-electro-mechanical-systems (MEMS) manufactured of silicon, merge cost effective and space saving features as an energy efficient and innovative product. In this work, reversible operated silicon microphones are modeled and optimized towards sound pressure level and total harmonic distortion. The models are described by coupled partial differential equations and solved by the help of the finite element method. Due to the small dimensions of a single acoustic transducer of approximately one millimeter in diameter and two micrometer in thickness, the loudspeaker is manufactured as an eight bit array. The array arrangement opens up the opportunity to drive the speaker in conventional analog driving mode or apply digital sound reconstruction. Geometric nonlinearities such as large deformation, pre-stress or mechanical contact are reflected in the mechanical model and excited electrostatically. By applying the virtual displacement method, the influence of the insulation layer is mapped to the electrostatic force computation. The electrostatic force interacts with the structural mechanics and the membrane starts to oscillate. The electrostatically actuated membrane is coupled to the acoustic model, where the sound pressure level is computed. The challenge in the acoustic propagation computation is on the one hand, the number of unknowns, which can be minimized by using Mortar FEM (non-conforming grids), and on the other hand, in the reflections caused by the bounds of truncating the propagation region. These reflections are minimized with absorbing boundary conditions or a perfectly matched layer surrounding the propagation region. Acoustic results on the single transducer were computed by the fini.

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SUPER SALE Driven 525 47T Lightened Steel Rear Sprocket for Daytona 675 06-09

SUPER SALE Driven 525 47T Lightened Steel Rear Sprocket for Daytona 675 06-09


Open box. Sprocket was installed on bike but never rode on. Marks are noticeable where bolts where tightened but otherwise new. Stock Gearing 16/47 Our new 525 Steel sprockets are the first to incorporate our new EST Technology. Driven “Evo Spec” 525 Steel Sprockets Evolution Specification Technology is the relentless pursuit to produce products that have been developed using only the latest high tech methods available and the force behind Driven Racing from day one. Our new EST Technology incorporates three of the most essential key elements that must be considered whilte developing new and existing products. * Evolution * Specification * Technology We have combined these three key elements and created a blueprint for designing, manufacturing, and developing new products. EST Technology guarantees that you the customer will always receive a product which was designed and manufactured using most current specs and technology available for years to come. As motorcycles evolve, so does the way we create the parts that make up the soul of the bike itself. This philosophy is EST Technology.
List Price: $ 14.95
Price: $ 14.95