Models of computation | Automata (computation)

Embedded pushdown automaton

An embedded pushdown automaton or EPDA is a computational model for parsing languages generated by tree-adjoining grammars (TAGs). It is similar to the context-free grammar-parsing pushdown automaton, but instead of using a plain stack to store symbols, it has a stack of iterated stacks that store symbols, giving TAGs a generative capacity between context-free and context-sensitive grammars, or a subset of mildly context-sensitive grammars.Embedded pushdown automata should not be confused with nested stack automata which have more computational power. (Wikipedia).

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Vane Pump

http://www.mekanizmalar.com A rotary vane pump is a positive-displacement pump that consists of vanes mounted to a rotor that rotates inside of a cavity.

From playlist Pumps

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Implantable defibrillator teardown

Inside an implantable heart pacemaker/defibrillator

From playlist Medical stuff

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Closed Center Valve

http://www.mekanizmalar.com This is a flash animation of a hydraulic closed center valve.

From playlist Pneumatic and Hydraulics

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4. Pushdown Automata, Conversion of CFG to PDA and Reverse Conversion

MIT 18.404J Theory of Computation, Fall 2020 Instructor: Michael Sipser View the complete course: https://ocw.mit.edu/18-404JF20 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP60_JNv2MmK3wkOt9syvfQWY Quickly reviewed last lecture. Defined context free grammars (CFGs) a

From playlist MIT 18.404J Theory of Computation, Fall 2020

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Torque Converter, How does it work?

Most of us enjoy the smooth and effortless feeling of driving in an automatic transmission car. The driving is effortless because you don’t need to worry about gear changing and you don’t have a clutch pedal to operate. In an automatic transmission car the work, of the clutch pedal, is aut

From playlist Automobile Engineering

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ElixirConf 2015 - The road to intellij-elixir 1.0.0 By Luke Imhoff

Learn how naively copying a grammar file from one parser generator to another won't work. Go back to the beginning and learn about lexers vs parsers, but discover that the power of interpolation changes the computational complexity and forces the lexer to be a push-down automata instead of

From playlist ElixirConf 2015

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lego technic studless scotch yoke

Here is a video of Scotch Yoke made by Lego Technic lift arms. No Lego bricks used in this design. I guess Lego should manufacture much large pulleys than I use here, so that we could get larger reciprocation motion.

From playlist Lego Technic

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Game Programming Patterns 10.1 - (Reading) State Pattern

We read through the State Game Programming Pattern chapter. Links code - [https://github.com/brooks-builds/learning_game_design_patterns](https://github.com/brooks-builds/learning_game_design_patterns) twitter - [https://twitter.com/brooks_patton](https://twitter.com/brooks_patton

From playlist Game Programming Patterns Book

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Recurrent Neural Networks and Models of Computation - Edward Grefenstette, DeepMind

This talk presents an analysis of various recurrent neural network architectures in terms of traditional models of computation. It makes the case for simpler recurrent architectures being closer to finite state automata, and argues that memory-enhanced architectures support better algorith

From playlist Logic and learning workshop

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Verónica Becher: Independence of normal words

Abstract : Recall that normality is a elementary form of randomness: an infinite word is normal to a given alphabet if all blocks of symbols of the same length occur in the word with the same asymptotic frequency. We consider a notion of independence on pairs of infinite words formalising

From playlist Logic and Foundations

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Fixed Swashplate Rotating Barrel

http://www.mekanizmalar.com/fixed_swashplate_rotating_barrel.html An axial piston pump has a number of pistons (usually an odd number) arranged in a circular array within a housing which is commonly referred to as a cylinder block, rotor or barrel. This cylinder block is driven to rotate

From playlist Pneumatic and Hydraulics

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Theory of Computation Recitation 5

Theory of Computation Recitation 5 aduni

From playlist [Shai Simonson]Theory of Computation

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27c3: Hackers and Computer Science (en)

Speaker: Sergey Although most academics and industry practitioners regard "hacking" as mostly ad-hoc, a loose collection of useful tricks essentially random in nature, I will argue that hacking has in fact become a "distinct research and engineering discipline" with deep underlying engine

From playlist 27C3: We come in peace

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Hand punch machine 1

Combination of gear drive and slider-crank mechanism. Inventor files of this video: http://www.mediafire.com/file/g440tz6eu1brn9c/HandPunch1Inv.zip/file

From playlist Mechanisms

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Animation - How an axial flow variable displacement piston pump works.

Hi Guys, Hydraulic pumps are of various types, axial flow variable displacement piston pump are used in heavy hydraulic construction equipments. Tracked excavator machines commonly use this type of pumps. The advantage of this pump is that, the flow is variable compared to gears pumps in

From playlist engineering explained

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Rotary Gear Pump

http://www.mekanizmalar.com/menu_pump.html This video show how a Gorman-Rupp type rotary pump works.

From playlist Pumps

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Theory of Computation Recitation 4

Theory of Computation Recitation 4 aduni

From playlist [Shai Simonson]Theory of Computation

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How a Rotary Engine Works

http://www.mekanizmalar.com/rotary_engine.html In the rotary engine instead of having a fixed cylinder block with rotating crankshaft as with a conventional radial engine, the crankshaft remains stationary and the entire cylinder block rotates around it

From playlist Engines

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Black Hat USA 2010: Exploiting the Forest with Trees 1/5

Speakers: Meredith L. Patterson, Len Sassaman One of the most difficult aspects of securing a protocol implementation is simply bounding the scope of the attack surface: how do you tell where attacks are likely to crop up? Historically, variations between implementations have led to some

From playlist Black Hat USA 2010

Related pages

Chomsky hierarchy | Combinatory categorial grammar | Pushdown automaton | Context-sensitive grammar | Computational model | Context-free grammar | Tree-adjoining grammar