In 1823 he joined the inventor Charles Babbage in his project to build the Difference Engine, a calculating machine that is considered to be a mechanical forerunner of the modern computer.
Zhao et al. (2012) established the simulation model of the longitudinal vibration of the sucker rod string with a load reducer according to the wave equation (Gibbls 1963) and the hydraulic feedback balance model (Guo 2014), and built the difference scheme method to achieve the numerical results.
At the receiver end, the decoder builds the frame difference signal from the received data and adds it to the reconstructed reference frames.
In this paper it will be shown that, under some weak regularity conditions, an UIO can be constructed for nonlinear systems if an error system, build as the difference of the plant and the system with zero unknown input, can be rendered dissipative by output injection.
When we have points of friction, looking at the best interest of the company becomes the common language to allow us to build over the differences towards a more constructive outcome.
But that parallel, which was drawn by insiders as readily as by outsiders, misses one crucial historical difference: F.D.R. built the state from scratch, while Mr. Obama is trying to overhaul a massive state machine that has existed for decades.
"We built the technology to make a difference and we remember how hard it was to start out," he adds.
The applause was for the news that Boeing and union machinists, long at odds, had reached a sweeping agreement to mend their differences and build the new 737 Max airplane here in the Puget Sound region.
To make up the difference, utilities build fossil-fueled "peaker" plants that are more expensive to operate because they're only used when demand is highest (imagine if you owned a car, but had to buy another one to drive only when the weather was hot!).
A one-dimensional layered model is built, in which the difference between theoretical and expected models is characterized by the root mean square (RMS) errors of time double differences (DDrms) (Concha et al. 2010; Waldhauser and Ellsworth 2000; Zhang et al. 2009a, b; Zhang and Thurber 2003; Zhou et al. 2010).
