improvement

Acta Astronautica61(2007)617–

625

719813d5360cba1aa811daef/locate/actaastro

Theory of a multistage light gas gun

J.G.Linhart?,F.Cattani

Department of Physics,University of Ferrara,Via Saragat1,Ferrara,Italy

Received22December2004;accepted11December2006

Available online30March2007

Abstract

The theory of multistage kinetic energy transfer is applied to the acceleration of a light projectile in a light gas gun(LGG). It is argued that a better overall gun ef?ciency can be obtained if the kinetic energy1/2M1V21of the?rst piston is not di

On software maintenance process improvement based on code clone analysis

Yoshiki Higo1,Yasushi Ueda1,Toshihro Kamiya2,

Shinji Kusumoto1and Katsuro Inoue1

1Graduate School of Information Science and Technology,Osaka University,

Toyonaka,Osaka560-8531,Japan

Phone:+81-6-6850-6571,Fax:+81-6-6850-6574

{y-higo,y-ueda,kusumoto,inoue}@ist.osaka-u.ac.jp

2PRESTO,Japan Science and Technology Corp.

Current Address:Graduate School of Information Science and Technology,Osaka

University,

Toyonaka,Osaka560-8531,Japan

Phone:+81-6-6850-6571,Fax:+81-6-6

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S m u No 8.

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