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in subjects: "Programming Languages 990200* -- Mathematics & Computers"

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COMP: a BASIC language nonlinear least-squares curve fitting program

COMP is an interactive nonlinear least squares routine written in BASIC language and used to obtain estimates of parameters in nonlinear functions and to approximate their associated statistical errors. The program uses the linearizing (or Taylor Series) expansion of partial derivatives outlined in Draper and Smith, (1966, pp. 267 to 270). Therefore, partial derivatives must be supplied (as well as the function) by the user for any new models not currently contained in the programs. When a line… more

Date: November 1, 1977

Creator: Thomas, J. M.; Cochran, M. I.; Watson, C. R. & Eberhardt, L. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Automatic program timing profiles with FTN4

Design of a scheme for producing execution timing profiles of FORTRAN programs automatically is proposed with a recommendation to implement it as an option to the compiler. An experimental implementation on the LBL 7600 is also described. 1 figure.

Date: September 1, 1980

Creator: Friedman, R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Basic linear algebra subprograms for FORTRAN usage. [BLAS, in FORTRAN and assembly language for IBM 360/67, CDC 6600 and 7600, and Univac 1108]

A package of 38 low-level subprograms for many of the basic operations of numerical linear algebra is presented. The package is intended to be used with FORTRAN. The operations in the package are dot products, elementary vector operations, Givens transformations, vector copy and swap, vector norms, vector scaling, and the indices of components of largest magnitude. The subprograms and a test driver are available in portable FORTRAN. Versions of the subprograms are also provided in assembly lang… more

Date: October 1, 1977

Creator: Lawson, C.L.; Hanson, R.J.; Kincaid, D.R. & Krogh, F.T.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

ADIFOR: Automatic differentiation in a source translator environment

The numerical methods employed in the solution of many scientific computing problems require the computation of derivatives of a function f: R{sup n} {yields} R{sup m}. ADIFOR (Automatic Differentiation in FORtran) is a source transformation tool that accepts Fortran 77 code for the computation of a function and writes portable Fortran 77 code for the computation of the derivatives. In contrast to previous approaches, ADIFOR views automatic differentiation as a source transformation problem and… more

Date: January 1, 1992

Creator: Bischof, C.; Corliss, G.; Griewank, A. (Argonne National Lab., IL (United States)) & Carle, A. (Rice Univ., Houston, TX (United States). Center for Research on Parallel Computation)

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Interactive graphics: analytical tool for geoprocessing

No Description Available.

Date: January 1, 1973

Creator: Hill, E. R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Fortran for the 1980's

The new standard Fortran 77 has not been available long, but the American National Standards Institute (ANSI) committee X3J3 responsible for Fortran standardization is already working on the next revision. Since the result of this work will be a candidate for an international (ISO) standard, it is important that work being done now become known to all persons interested in Fortran. A new set of problems related to the accommodation of related standards in data base management and real-time proc… more

Date: January 1, 1980

Creator: Adams, J. & Brainerd, W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

ADIFOR: Fortran source translation for efficient derivatives

The numerical methods employed in the solution of many scientific computing problems require the computation of derivatives of a function f: R{sup n} {yields} R{sup m}. Both the accuracy and the computational requirements of the derivative computation are usually of critical importance for the robustness and speed of the numerical method. ADIFOR (Automatic Differentiation In FORtran) is a source translation tool implemented using the data abstractions and program analysis capabilities of the Pa… more

Date: January 1, 1992

Creator: Bischof, C.; Corliss, G.; Griewank, A.; Hovland, P. (Argonne National Lab., IL (United States)) & Carle, A. (Rice Univ., Houston, TX (United States). Center for Research on Parallel Computation)

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Implementation guide for MINPACK-1. [Package of Fortran subprograms for solution of systems of nonlinear equations]

MINPACK-1 is a package of Fortran subprograms for the numerical solution of systems of nonlinear equations and nonlinear least-squares problems. This report describes how to implement the package from the tape on which it is transmitted. 3 tables.

Date: July 1, 1980

Creator: Garbow, B. S.; Hillstrom, K. E. & More, J. J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

System for histogram entry, retrieval, and plotting

This manual describes the systems for producing histograms and dot plots that were designed for use in connection with the Q general-purpose data-acquisition system. These systems allow for the creation of histograms; the entry, retrieval, and plotting of data in the form of histograms; and the dynamic display of scatter plots as data are acquired. Although the systems are designed for use with Q, they can also be used as a part of other applications. 3 figures.

Date: October 1, 1977

Creator: Kellogg, M.; Gallup, J. M.; Shlaer, S. & Spencer, N.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

LSQFT: a nonlinear least squares data fitting subroutine suitable for minicomputers. [In FORTRAN for Hewlett Packard 1000]

The FORTRAN subroutine LSQFT is described which uses the Gauss method to fit nonlinear functions to data. This particular program is suitable for use on a minicomputer that is utilized for real-time data acquisition and analysis. A sample problem is described that requires a nine-parameter nonlinear fit to 200 data points. This problem serves both to illustrate the use of LSQFT and to compare its results with TJMAR1, a nonlinear parameter estimation program available in the Sandia MATHLIB, for … more

Date: May 1, 1980

Creator: Drotning, W.D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Audit trails and PC control on Novell networks

Although Novell Netware 286 provides excellent access control at both the server and the directory level, the record they make available through the accounting function leaves much to be desired. This paper presents two programs; the first is a BASIC program that converts the output of Novell's PAUDIT command into single line audit trails, providing an auditable record of server access. The second program, written in dBase III+, can be used to insure that all PC's accessing the LAN are recorded… more

Date: January 1, 1991

Creator: Cabot, A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

QMESH/RHENUM/QPLOT mainframe and plotter conversion: CDC6600 to IBM 360/370 and SC4020 to Calcomp. [In FORTRAN]

A code conversion project to modify an existing set of FORTRAN computer programs to run on a different mainframe and to drive a different plotter is discussed. The mainframe conversion was from a CDC6600 to an IBM360; the plotter conversion was from an SC4020 (driven by calls to SCORS library subroutines) to a Calcomp. The changes made because of differences between the FORTRAN compliers were relatively minor. IBM ASSEMBLER source decks were acquired to replace all of the CDC special features (… more

Date: September 1, 1977

Creator: Schkade, A.F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

General purpose computers in real time

I see three main trends in the use of general purpose computers in real time. The first is more processing power. The second is the use of higher speed interconnects between computers (allowing more data to be delivered to the processors). The third is the use of larger programs running in the computers. Although there is still work that needs to be done, I believe that all indications are that the online need for general purpose computers should be available for the SCC and LHC machines. 2 fig… more

Date: September 18, 1989

Creator: Biel, J.R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

A 3-D measurement system using object-oriented FORTH

Discussed is a system for storing 3-D measurements of points that relates the coordinate system of the measurement device to the global coordinate system. The program described here used object-oriented FORTH to store the measured points as sons of the measuring device location. Conversion of local coordinates to absolute coordinates is performed by passing messages to the point objects. Modifications to the object-oriented FORTH system are also described. 1 ref.

Date: January 1, 1989

Creator: Butterfield, K.B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Experiences with distributing graphic software between processors

Software to aid the distribution and coordination of tasks between different processors was developed to distribute applications written in Fortran. This development led to the discovery of problems unique to Fortran and to interesting practical solutions. Two graphical applications were distributed to a variety of machines and machine pairs: CDC 7600-LSI/11, Cray-LSI/11, VAX 11/780, and Apollo. These distributions pointed out several parameters such as the use of Fortran Common, communication … more

Date: January 1, 1982

Creator: Hamlin, G. & George, J.E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Teaching old Fortran programmers new tricks

For a number of valid reasons, Fortran remains in widespread use. It can be difficult to get long-time Fortran programmers to accept the use of new software tools that are increasingly required to lower software costs. In order to gain acceptance for a new software tool, it is necessary for it to be easy to learn and use, as well as to provide new benefits. In the process of introducing the use of the Ratfor preprocessor for Fortran, a number of useful guidelines were defined for gaining the ac… more

Date: January 1, 1980

Creator: Wampler, B. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

NOSPLOT: a computer program for plotting SCORS output on a Tektronix terminal. [For CDC 6600/7600, in FLECS]

NOSPLOT will read the SC-4020 plot tapes output by the SCORS plotting package and plot selected frames on a Tektronix terminal under the CDC 6600's NOS 1 operating system. This feature enables SCORS users on the CDC 6600/7600 to examine their plots immediately rather than waiting until the next day.

Date: November 1, 1977

Creator: Ruiz, N.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Metrology data reduction system: PDP-11/34 computer system. [MOUNT, for thermistor mount data acquisition, in FORTRAN IV]

A PDP-11/34 computer system was installed to acquire, correct, scale, display, store, and process data obtained by microwave and dc area coupler controllers. The system is used to calibrate power sensors and impedance and dc measurement standards on a real-time basis. The microwave data input is from a digital voltmeter and scanner arrangement, which also may be controlled from a P-ROM control board. The dc data input is from a passive device interface or from a terminal keyboard. 5 figures, 8 … more

Date: April 1, 1980

Creator: Cable, J.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Development and comparison of algorithms for generating a scan sequence for a random access scanner. [ZAP (and flow charts for ZIP and SCAN), in FORTRAN for DEC-10]

Many data acquisition systems incorporate high-speed scanners to convert analog signals into digital format for further processing. Some systems multiplex many channels into a single scanner. A random access scanner whose scan sequence is specified by a table in random access memory will permit different scan rates on different channels. Generation of this scan table can be a tedious manual task when there are many channels (e.g. 50), when there are more than a few scan rates (e.g. 5), and/or w… more

Date: September 1, 1980

Creator: Eason, R. O.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

FORTRAN subroutine for computing the optimal estimate of f(x)

A FORTRAN subroutine called RANGE is presented that is designed to compute the optimal estimate of a function f given values of the function at n distinct points x/sub 1/ < x/sub 2/ < ... < x/sub n/ and given a bound on one of the derivatives of f. We donate this estimate by ..cap omega... It is optimal in the sense that the error abs value (f - ..cap omega..) has the smallest possible error bound.

Date: October 1, 1980

Creator: Gaffney, P.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Experiences with distributing graphic software between processors

Software to aid the distribution and coordination of tasks between different processors was developed to distribute applications written in Fortran. This development led to the discovery of problems unique to Fortran and to interesting practical solutions. Two graphical applications were distributed to a variety of machines and machine pairs: CDC 7600-LSI/11, CRAY-LSI/11, VAX 11/780, and Apollo. These distributions pointed out several parameters such as the use of Fortran COMMON, communication … more

Date: January 1, 1982

Creator: Hamlin, G. & George, J.E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Main program and overlay manager subsystem within a distributed function laboratory computer system

A key property of modern systems to control and acquire data from a collection of laboratory experiments is that the computer programs to effect this control and data acquisition are written in a high-level language, e.g., FORTRAN. The large amount of core memory required for execution of programs compiled from the FORTRAN language poses the most significant problem in the design of systems to support this language. A common method of solving this problem involves dividing the execution code in… more

Date: October 1, 1977

Creator: Stubblefield, F.W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

GKS utilities for FORTRAN-77

This document describes a number of subroutines that can be useful in GKS graphic applications programmed in FORTRAN-77. The algorithms described here include subroutines to do the following: (1) Draw text characters in a more flexible manner than is possible with basic GKS. (2) Project two-dimensional and three-dimensional space onto two-dimensional space. (3) Draw smooth curves. (4) Draw two-dimensional projections of complex three-dimensional objects. FORTRAN-77 is described in American Nati… more

Date: January 1, 1992

Creator: Beach, R.C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Development of software for computer assisted model simplification. Final report. [Lagrange multipliers]

The final report of DBS Corporation on the model simplification project is presented. The purpose of the project is to develop computer-assisted model simplification. The contributions of DBS to this project where an initial overall project assessment, contributions to design principles and testing procedures, specific experimental designs, and initial test results. The main contributions of DBS to this project were in the area of LP matrix scaling, and particularly in the potential usefulness … more

Date: April 25, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department