Acta Technica 100. (1987)

1-2. szám

ACTA TECHNICA Volume 100 Nos 1—4 CONTENTS PREFACE ................................................................................................................ 3 Pál CSONKA 1896-1987 ......................................................................................... 163 ✓ Bosznay, A.-Szíjártó, J.: Combined use of truncated and intermediate operators for the calculation of rod oscillation frequencies ........ 167 Cook, J. : Olgyay and Olgyay in Hungary and America .................................. 5 Csonka, P.: Sectorial shells with edge girders of horizontal plane ___ 19 Deleroi, W.-Kovács, K.P.: Simple mathematical model for the determina­tion of external and internal magnetization curves in an induction motor ........................................................................................................... 27 Sir Downs, 0. : Improving the efficiency of the road vehicle power plant 35 Farkas, J.: Optimum design for fatigue of trusses welded from circular hollow sections ......................................................................................... 51 Farkas, M.-Gáspár,Z.-Kollár, L.-Patkó, G.-Pomázi, L.-Stépán, G.: Stabili­ty investigations of mechanical systems. State of art ...................... 67 Ferencz, Cs.: Geometric questions of electromagnetic wave propagation in moving media ......................................................................................... 195 Hegedűs, I.: Comment on 'Stability of large frameworks on hinged sup­ports', a study by K.A. Zalka .................................................................... 385 Lévai, A.: Energetical links between eastern and western Europe with fixed transport lines; participation in the World's international energy trade .............................................................................................. 101 Lukács, J,: Increase of the efficiency of chemical-mechanical energy conversion by поп-spherical momentum distribution of combustion products ...................................................................................................... 119 Marcinkowski, M.J.: Grain boundary energies in terms of surface dis­locations .................................................................................................... 207 Michelberger, P.: Loading analysis under operational conditions for the design of commercial road vehicles............................................................ 127

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