## A Methodology for Systems Engineering, Volume 24 |

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Page 356

... much faster method is to use a rule for writing transfer functions by inspection .

... much faster method is to use a rule for writing transfer functions by inspection .

**Mason's rule**( Ref 16 ) is actually very b a a xd e 1 - b X3 = 356 Sec . 14.9 A METHODOLOGY FOR SYSTEMS ENGINEERING Graph Reduction-**Mason's Rule**.Page 361

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**Mason's rule**to this graph we obtain by inspection 1 A = 1 + + SCaRa 1 + + sCaRb sCbRb 1 1 s2CaCbRaRb Therefore Ti Δι = 1 s2CaCbRaRb = 1 T = 1 ( 14-9 ) s2CaCbRaRb + sC¿Rò + sCbRɑ + sCaRa + 1 This identical transfer function derived by ...Page 366

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**Mason's rule**serves as a check that this flow graph is also valid . 14.13 SIGNAL - FLOW GRAPH ANALYSES OF RANDOM PROCESSES + 14.13.1 Markov Processes A Markov process is a sequence of states or events in which the outcome depends only ...### Contents

WHAT IS SYSTEMS ENGINEERING? | 3 |

THE TD2 RADIO RELAY SYSTEM | 23 |

3 4 The State of the Environment at the End of | 32 |

Copyright | |

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alternative analog computer analysis basic behavior block diagram called channel Chapter circuit complete components cost creative criterion decision decision theory defined demand functions direct distance dialing discussed economic environment equation equipment evaluation example existing exploratory feedback frequency given important income individual inputs and outputs interval scale kind laboratory level of measurement logical loop manufacture Mason's rule matrix means measure ment methods minimax mixed strategy objectives operations research optimal organization payoff payoff matrix phase physical system possible preference probability problem profit properties prospectus radio ratio ratio scale relation requirements satisfy scale signal signal-flow graph specific standing plans statistical studies subsystems systems engineering systems engineering process systems synthesis TD-2 system technical techniques telephone television theory tion transfer function transmission utility utility function value system variables