## Journal of the Franklin Institute, Volume 266Pergamon Press, 1958 Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415] |

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**coefficients**and the modified z - transform is used to solve difference equations whose**coefficients**are periodic functions . Finally , the z - trans- form is applied to the solution of difference equations with periodic**coefficients**...Page 197

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**COEFFICIENTS**We now wish to apply the z - transform to solve difference equations with periodic**coefficients**( 10 ) ; that is , to the following equation Xn + 1 = anXn + Yn . ( 41 ) - a , is a periodic**coefficient**whose period is equal ...Page 200

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**coefficient**; that is , the 2N equations which correspond to a complete period of the**coefficients**are written and each equation is substituted into the follow- ing equation . This results in two constant**coefficient**difference equa ...### Contents

JULY 1958 No | 1 |

Effects of Unipolar Air Ions on Microorganisms and on Evaporation | 9 |

Plastics in the Space Age JOHN H Lux | 21 |

7 other sections not shown

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acceleration accelerometer analysis angle applied Atomic attacking moments axis Bell Telephone Laboratories Benjamin Franklin Parkway Chairman chapter coefficients Committee components conjugate frames constant diagrams difference equations discussion Donald Wills Douglas Earth effect electrical electronic energy Engineering error ferrocene field flight fluid force Franklin Institute Franklin Institute Laboratories function gyro gyroscope heat hinge rotations inertial guidance inertial guidance system initial instrument LEPAGE linear load M₁ mass material mathematical mechanism Medal method momentum navigation nuclear obtained operation paper particles perturbation Phila Philadelphia physical plastic platform position Poynting theorem present Price problem proper frame radius range reactor reference rest mass rocket Science shown in Fig solution space techniques temperature theory tion torque trajectory transformation tube velocity voltage York z-transform zero Δφ