Program Index with Floppy Disk File Names

The classical problem of the incidence of spherical waves on a plane boundary has been reformulated from the computational point of view by providing a high frequency approximation to the exact solution applicable to any seismic body wave, regardless of the number of conversions or reflections from the bottoming interface. In our final expressions the ray amplitude of the interference reflected-head wave is cast in terms of a Weber function, the numerical values of which can be conveniently stored on a computer disk file and retrieved via direct access during an actual run. Our formulation also accounts for the increase of energy carried by multiple head waves arising during multiple reflections of the reflected wave from the bottoming interface. In this form our high frequency expression for the ray amplitude of the interference reflected-head wave can represent a complementary technique to asymptotic ray theory in the vicinity of critical regions where the latter cannot be used. Since numerical tests indicate that our method produces results very close to those obtained by the numerical integration of the exact solution, its combination with asymptotic ray theory yields a powerful technique for the speedy computation of synthetic seismograms for plane homogeneous layers.

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Assembling Auras: Towards a Methodology for the Preservation and Study of Video Games as Cultural Heritage Artefacts

Games and Culture ◽

10.1177/15554120211020381 ◽

2021 ◽

pp. 155541202110203

Author(s):

Dany Guay-Bélanger

Keyword(s):

Video Games ◽

Cultural Heritage ◽

Future Study ◽

Magnetic Tape ◽

Floppy Disk ◽

Digital Art ◽

Original Version ◽

New Approach

Video games, while a digital art, live on physical media. Whether cartridge, magnetic tape or floppy disk, they degrade. Without care and study, they disappear and cannot be played again. While it might be possible to preserve play using emulation or video captures, scholars need to consider every option at their disposal to preserve video games for future study. This includes securing original versions of games and ephemera, recording play, interviewing game creators, and players, and much more. This article develops a new approach to conceptualise video games as material and cultural heritage, and proposes a methodology for their study, especially those for which there is no original version left.

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A 3.5-inch 16MB floppy disk drive

IEEE Translation Journal on Magnetics in Japan ◽

10.1109/tjmj.1990.4564235 ◽

1990 ◽

Vol 5 (2) ◽

pp. 111-120

Author(s):

S. Matsukawa ◽

H. Muraoka ◽

T. Koudo ◽

N. Wakabayashi

Keyword(s):

Floppy Disk ◽

Disk Drive ◽

Floppy Disk Drive

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Shared-Disk File System

Encyclopedia of Database Systems ◽

10.1007/978-0-387-39940-9_3599 ◽

2009 ◽

pp. 2637-2637

Keyword(s):

File System ◽

Disk File

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U Cephei Revisited

International Astronomical Union Colloquium ◽

10.1017/s0252921100088102 ◽

1989 ◽

Vol 107 ◽

pp. 355-355

Author(s):

Burt Nelson ◽

Walter D. Davis

Keyword(s):

Light Curve ◽

Floppy Disk ◽

Light Curves ◽

Eclipsing Binary

Observations of U Cephei made by C. M. Huffer, et al, in 1950-51 and in 1959, are presented here to contrast with other observations made by Huffer and others.In many cases, to see a light-curve of an eclipsing binary is to see all light-curves for that particular system. This is certainly not true of U Cephei which, because of its rapid variations, has held the attention of so many for so long.The 1950-51 yellow and blue observations were made at Washburn Observatory, Madison. The data have been transcribed from Huffer’s note books to a floppy disk and are available.

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The ING Seismic Network Databank (ISND) : a friendly parameters and waveform database

Annals of Geophysics ◽

10.4401/ag-4120 ◽

1995 ◽

Vol 38 (2) ◽

Author(s):

S. Barba ◽

R. Di Giovambattista ◽

G. Smriglio

Keyword(s):

Floppy Disk ◽

Seismic Network ◽

Acquisition System ◽

Magnetic Media ◽

Telephone Line ◽

Network Database ◽

Ascii Format ◽

Mail Address ◽

To Receive ◽

E Mail

he Istituto Nazionale di Geofisica (ING) Seismic Network Database (ISND) includes over 300000 arrivaI times of Italian, Mediterranean and teleseismic earthquakes from 1983 to date. This database is a useful tool for Italian and foreign seismologists ( over 1000 data requests in the first 6 months of this year). Recently (1994) the ING began storing in the ISND, the digital waveforms associated with arri,Tal times and experimen- tally allowed users to retrieve waveforms recorded by the ING acquisition system. In this paper we describe the types of data stored and the interactive and batch procedures available to obtain arrivaI times and/or asso- ciated waveforms. The ISND is reachable via telephone line, P.S.I., Internet and DecNet. Users can read and send to their E-mail address alI selected earthquakes locations, parameters, arrivaI times and associated digital waveforms (in SAC, SUDS or ASCII format). For r;aedium or large amounts of data users can ask to receive data by means of magnetic media (DAT, Video 8, floppy disk).

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