High-speed Storage Research Articles

High-speed holographic recording of 500 images in a rare earth doped solid

We present experimental results demonstrating high-speed storage and retrieval of 500 single-page time-domain holograms in an Eu3+:Y2SiO5 crystal. The holograms were stored in the inhomogeneously broadened 7F0–5D0 transition of the crystal by wavelength multiplexing at a temperature of 2.5K. Each hologram occupied a narrow spectral channel of around 500kHz and was separated from its adjacent channels by only around 700kHz. Both the recording and playback of the holograms were performed at a speed of 30framess−1 with the use of a 100mW cw laser. The experimental results project an achievable frame transfer speed in excess of 13×103framess−1. Implications of the results for high-speed digital data storage are discussed.

An optically scanned ems reporting form and analysis system for statewide use: Development and five years' experience

Analysis of emergency medical services (EMS) systems data is crucial to planning, education, research, and quality assurance programs. Currently, comparative analysis of EMS data between regions or states is virtually impossible due to wide variations in data collection and analysis methods. To devise a practical and uniform EMS reporting system, we referenced the minimum data set (MDS) established by the federal government in 1974 and surveyed 22 states known to be using uniform reporting systems. In developing our final data set, elements were added based on inclusion in the MDS, national survey results, a review of current EMS literature, and consensus of local EMS providers. This set of 48 elements then was incorporated into a reporting form using narrative and optically scanned formats, allowing automated data collection for computer analysis. After a pilot study, the system was improved to allow high-speed ink reading and large volume data storage and analysis using a microcomputer. This system has subsequently been adopted by seven states. The combined data base exceeds 250,000 cases. Error screening algorithms ensure data integrity and are also used for quality assurance. Customized output reports can be generated within minutes and have assisted in EMS quality assurance, planning, and research. We believe that the successful performance of this system supports the use of the suggested data elements as well as optical scanning and microcomputer analysis of EMS data.

Abscissae and weights for the Gauss-Hermite quadrature formula

Title of program: GAUSSH Catalogue number: ABBL Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer: FACOM M-780/20; Installation: Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812, Japan Operating system: IV/F4 Programming language used: FORTRAN 77 High speed storage required: 264 Kbytes No. of bits in a byte: 8 Other peripherals used: card reader, line printer No. of cards in combined program and test deck: 261 Card punching code: EBCDIC

Subroutines for integration of systems of first order ODE's

Title of program: RKPC Catalogue number: ABBH Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer: IBM 3083J24; Installation: University of the Witwatersrand Computer Centre Operating system: VM/SP HPO 4.2 Programming language used: FORTRAN VS LEVEL 1.4.1, LANGLVL (77) High speed storage required: 20272 bytes for OPT(0) compile No. of bits in a byte: 8 Peripherals used: card reader, line printer No. of cards in combined program and test deck: 617 Nature of the problem Numerical integration of the vector equation d y/d x = f( x, y). Method of solution Application of second to sixth order, fixed step, Runge-Kutta or predictor-corrector integration formulae. Restrictions on the complexity of the problem Vector dimension set for 20 components. Typical running times Dependent on required range and accuracy: for the test cases it is in the range 0.14 to 0.18 s.

Subroutines for convolution sums of Chebyshev and Fourier series

Title of program: CCFS Catalogue number: ABBO Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer: IBM 3083J24; Installation: University of the Witwatersrand Computer Centre Operating system: VM/SP HPO 4.2 Programming language used: FORTRAN VS LEVEL 1.4.1, LANGLVL (77) High speed storage required: 27412 bytes for OPT (0) compile No. of bits in a byte: 8 Peripherals used: card reader, line printer No. of cards in combined program and test deck: 682 Nature of the problem Numerical calculation of the coefficients for a single series obtained as the product of two series. Method of solution Application of standard results for Chebyshev polynomials and Fourier series. Restrictions on the complexity of the problem Length of the series is not limited in the subroutine package but is limited to 41 terms in the main driver, I/O and test programs. Typical running times Dependent on required range and accuracy: for the test cases it is 0.15 s.

A reduce package for exact Coulomb interaction matrix elements

Title of program: R12 interaction matrix elements Catalogue number: ABBN Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer: IBM compatible PC/ Cray 1 M Operating system: MS DOS 3.x/ COS 1.15 Programming language used: Reduce 3.2 High speed storage required: 512 KB for PC/ 290 Kwords for Cray No. of bits in a word: 64 No. of lines in combined program and test deck: 500

Program “color” for computing the group-theoretic weight of Feynman diagrams in non-Abelian gauge theories

Title of program: COLOR Catalogue number: AAXC Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer: IBM 360/370 Operating system: OS, VM Programming language used: REDUCE [1] High-speed storage required: depends on the problem; minimum about 400 Kbytes Number of bits in word: 32 Number of lines in combined program and test deck: 200

Study on high-density recording of an ablative-type optical disk

This paper studies high-density recording on optical disks. The optimal pit diameter and the recording conditions necessary to form low-noise pits are considered. The recording characteristics of a Te-containing plasma polymerized CS2 film (CS2-Te) are studied. This CS2-Te optical disk is shown to be an excellent medium to use in achieving high-density and high-speed storage.

Data structure techniques for the graphical special unitary group approach to arbitrary spin representations

Title of programs: GENDRT, DRTDIM Catalogue number: AATF Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer: IBM PC, PC/XT, PC/AT; Installation: University of Windsor Operating system: MS-DOS (PC-DOS) version 2.1 or higher Programming language used: Pascal High speed storage required: GENDRT - 128 Kwords minimum, DRTDIM - 128 Kwords minimum Number of bits in a word: 16 Peripherals used: video terminal, floppy or hard disk Number of lines in combined program and test deck: GENDRT - 2048, DRTDIM - 2337

Computing the convex hull of a set of points

Title of program: CXHULL Catalogue number: AATI Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer: VAX 8600; Installation: Lockheed Palo Alto Research Labs. Operating system: VMS Version 4.2 Programming language used: Fortran 77 High speed storage required: 8123 words No. of bits in a word: 32 No. of lines in combined program and test deck: 669

Low temperature Grüneisen parameter of cubic ionic crystals

Title of program: CAROLINA Catalogue number: AATG Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer: IBM/370, Model 158; Installation: Centro de Tecnología y Ciencia de Sistemas, Universidad de Buenos Aires Operating system: VM/370 Programming language used: FORTRAN High speed storage required: 3 kwords No. of bits in a word: 32 Peripherals used: disk IBM 3340/70 MB No. of lines in combined program and test deck: 447

Interactions between hadrons and nuclei: The Lund Monte Carlo - FRITIOF version 1.6 -

Title of program: FRITIOF Version 1.6 Catalogue number: AATH Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer for which the programme is designed: ND, VAX, UNIVAC, CDC and others with a FORTRAN 77 compiler Computer: ND-570; Installation: University of Lund, Lund, Sweden Operating system: SINTRAN III - VSX/500 Program language used: FORTRAN 77 High speed storage required: 61 Kwords No. of bits in a word: 32 Peripherals used: terminal for input, terminal or line-printer for output No. of lines in combined program and test deck: 1630 CPC Library subprogram used: JETSET 6.2; cat. no.: AAFP; ref. in CPC: 39 (1986) 347

The Lund Monte Carlo for jet fragmentation and e + e - physics - jetset version 6.3 - an update

Title of program: JETSET 6.3 Catalogue number: AATJ Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer for which the program is designed and others on which it is operable: ND, VAX, IBM, CDC and others with a FORTRAN 77 compiler Computer: ND-570; Installation: University of Lund, Lund, Sweden Operating system: SINTRAN III - VSX/500 Programming language used: FORTRAN 77 High speed storage required: 50 Kwords No. of bits in word: 32 Peripherals used: terminal for input, terminal or line printer for output No. of lines in combined program and test deck: 6173

Structured Development of a Petrophysics Laboratory Computer System to Aid in Formation Evaluation and Geologic Interpretation: ABSTRACT

Problem solving, data collection, and analysis in geology require diverse tools and methods. Computers must be convenient and versatile to be useful as laboratory apparatus and as tools for use in formation evaluation and geologic interpretation. Networking and distributed intelligence provide a laboratory with flexibility and power for cost-effective real-time data collection, management, and analysis. Networking facilities toolbox-style programming; improves data compilation, management, and comparison; and increases peripheral effectiveness. Distributed intelligence enhances local instrumentation, uninterrupted real-time data collector, and data analysis. The system presented includes facilities for instrumentation, data collection and management, and interpretation, analysis, and presentation for such systems as mercury injection, rock electrical properties, gas slippage, Klinkenberg correction, gamma-ray logging, cation exchange capacity, thermal neutron capture cross section, and permeability/porosity measurements. The individual systems share central text and graphic hard-copy devices and high-speed mass storage and backup facilities. Modifying the central system updates many of the remote system facilities such as user interfaces and graphic facilities. Individual system configurations include instrumentation, high-resolution color graphics, analog to digital conversion, and variation in computing power.

A reduce program for finding symmetries of nonlinear evolution equations with uniform rank

Title of program: DRANK, DRANK2, SYM, SYM2, SYMS Catalogue number: AALS Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer: HITAC M-200H Operating system: VOS 3 Programming language used: REDUCE 3.0, RLISP High speed storage required: depends on the problem, minimum about 1000 Kbytes No. of bits in a word: 32 No. of lines in combined program and test deck: 913

Calculation of elastic diffuse leed intensities from disordered adsorbates

Title of program: DLEED Catalogue number: AALY Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer: CRAY-1S; Installation: University of London Computer Centre Operating system: COS (Cray Operating System) Programming language used: FORTRAN 77 High speed storage required: variable, but about 160 Kwords No. of bits per word: 64 No. of lines in the combined program and test deck: 2607

FREESCO: Statistical event generator for nuclear collisions

Title of program: FREESCO Catalogue number: AALV Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computers: CDC-6600, -7600, VAX-750, -780, -8600, CRAY-1,… Programming language used: Fortran 77 High speed storage required: 71 680 bytes Number of bits per word: 32 Peripherals required: output device for error messages, mass storage device for nuclear data input and recording of generated events Number of lines in program: 1779

ODEPAINLEVE - A MACSYMA package for painlevé analysis of ordinary differential equations

Title of program: ODEPAINLEVE Catalogue number: AALT Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer: VAX 11/780; Installation: Centre de calcul, Université de Montréal Note: The program is operable on any computer on which MACSYMA is implemented Operating system: VMS Programming language used: REX MACSYMA High speed storage required: approximately 0.5 Mbytes, depending on the equation being analysed No. of bits in a word: 32 No. of lines in combined program and test deck: approx. 300

Identification of clusters in computer experiments with periodic boundary conditions

Title of program: Cluster Identification Catalogue number: ACKZ Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer for which the program is designed and others on which it is operable: IBM, Siemens, Fujitsu and others with a FORTRAN 77 compiler Computer: IBM 3090/Siemens 7890; Installation: Kernforschungszentrum Karlsruhe, Karlsruhe, Fed. Rep. Germany Operating system: MVS/SP 2.1.3 (XA) Programming language used: FORTRAN 77 High speed storage required: 1 MByte Peripherals used: 1 terminal for input, terminal or line printer for output No. of lines in combined program and test deck: 212

Single-phonon X-ray scattering

Title of program: SPHZB86 Catalogue number: AALZ Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue) Computer: Honeywell 66/80; Installation: University of Aberdeen Operating system: GCOS8 Programming language used: FORTRAN 77 High speed storage required: 37 Kwords, plus eigendata file No. of bits in a word: 36 Peripheral used: lineprinter No. of lines in combined program and test deck: 1710