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1

Multiprocessor minicomputer designed for UNIX  

SciTech Connect

A multiuser minicomputer designed specifically for the UNIX operating system and incorporating industry standard design elements is described. The architecture's purpose is to optimise UNIX by exploiting its strengths and designing around operating system characteristics which hinder performance in multiprocessing environments.

Myers, C.; Munsey, G.

1982-02-01

2

Minicomputers: An Alternative Approach to Municipal Information Systems.  

National Technical Information Service (NTIS)

This document presents the advantages and disadvantages of the use of minicomputers in management information systems. As a result of this research project, Boise City concluded that the minicomputer approach to managing data has very distinct and identif...

B. De Groff L. Blanchard M. Bliss

1976-01-01

3

A NASA family of minicomputer systems, Appendix A  

NASA Technical Reports Server (NTRS)

This investigation was undertaken to establish sufficient specifications, or standards, for minicomputer hardware and software to provide NASA with realizable economics in quantity purchases, interchangeability of minicomputers, software, storage and peripherals, and a uniformly high quality. The standards will define minicomputer system component types, each specialized to its intended NASA application, in as many levels of capacity as required.

Deregt, M. P.; Dulfer, J. E.

1972-01-01

4

Selecting an image analysis minicomputer system  

NASA Technical Reports Server (NTRS)

Factors to be weighed when selecting a minicomputer system as the basis for an image analysis computer facility vary depending on whether the user organization procures a new computer or selects an existing facility to serve as an image analysis host. Some conditions not directly related to hardware or software should be considered such as the flexibility of the computer center staff, their encouragement of innovation, and the availability of the host processor to a broad spectrum of potential user organizations. Particular attention must be given to: image analysis software capability; the facilities of a potential host installation; the central processing unit; the operating system and languages; main memory; disk storage; tape drives; hardcopy output; and other peripherals. The operational environment, accessibility; resource limitations; and operational supports are important. Charges made for program execution and data storage must also be examined.

Danielson, R.

1981-01-01

5

Why Use a Minicomputer? Some Factors Affecting Their Selection.  

ERIC Educational Resources Information Center

A study of computer facilities in British libraries highlighted the respective benefits and disadvantages of using the parent institution's central computer or using a dedicated minicomputer. The large computer's technical advantages include greater opportunities for sharing or buying operational software, and the availability of experienced…

Wainwright, Jane

6

HYPO-COBOL -- A COBOL Subset for Minicomputers.  

National Technical Information Service (NTIS)

The HYPO-COBOL language is a COBOL subset designed for implementation in mini-computer and time-sharing environments which impose resource limitations. The HYPO-COBOL subset in a small scale package which could provide basic capabilities, yet still not ma...

M. M. Cook G. N. Baird

1977-01-01

7

General purpose emulation using the Hewlett-Packard 2100 minicomputer  

Microsoft Academic Search

A taxanomy of methods for the implementation of general-purpose emulation projects on the Hewlett-Packard 2100 minicomputer is presented. The HP2100 is intended to be microprogrammed for instruction set extensions rather than general emulation. Problems encountered and solutions found through experience are discussed.

Daniel W. Lewis

1979-01-01

8

Mini-Computer Systems--A New Class of General Purpose Computer.  

ERIC Educational Resources Information Center

The Mini-Computer is compared with the general purpose computer. On a performance basis the Mini-Computer shows several interesting comparisons with the System 360 computer. The Mini-Computer core cycle, instruction execution speeds, and disc operating speeds are quite similar to the much larger 360-30 and 40 while its magnetic tape speeds are…

Turnblade, Richard C.

9

A modular minicomputer based Navier-Stokes solver  

NASA Technical Reports Server (NTRS)

The basic module consists of a minicomputer, low cost peripheral storage device (disk) and a modest number (8-12) of microcomputer modules. A simple arrangement, where the microcomputers are connected to a single time multiplexed bus, only communicating to the host minicomputer, will be efficient. By running the machine in a dedicated mode for long periods of time, it will be possible to obtain a large number of solutions. As such, the device should be useful as a research tool. A scheme is outlined to assemble a number of these computing modules in parallel to decrease computing time. The advantages and disadvantages are discussed of using a number of these systems assembled in a loosely coupled configuration, each independently computing a separate flow, to give a very high throughput.

Steinhoff, J.

1978-01-01

10

Migration of 1970s Minicomputer Controls to Modern Toolkit Software  

SciTech Connect

Controls for accelerators and associated systems at the Holifield Radioactive Ion Beam Facility (HRIBF) at Oak Ridge National Laboratory have been migrated from 197Os-vintage minicomputers to a modern system based on Vista and EPICS toolkit software. Stability and capabilities of EPICS software have motivated increasing use of EPICS for accelerator controls. In addition, very inexpensive subsystems based on EPICS and the EPICS portable CA server running on Linux PCs have been implemented to control an ion source test facility and to control a building-access badge reader system. A new object-oriented, extensible display manager has been developed for EPICS to facilitate the transition to EPICS and will be used in place of MEDM. EPICS device support has been developed for CAMAC serial highway controls.

Juras, R.C.; Meigs, M.J.; Sinclair, J.A.; Tatum, B.A.

1999-11-13

11

Minicomputer applications in automated testing of electro-optical guidance systems  

Microsoft Academic Search

An Automated Laser Seeker Performance Evaluation System (ALSPES) has been developed which utilizes a minicomputer to implement the control functions required to test electro-optical (E\\/O) guidance systems. These tests are used by the Government to identify problem areas in the guidance system design and to validate subsequent design changes. Software programs have been written for a series of tests which

R. E. Schneider

1979-01-01

12

Simulating CMI on a Mini-Computer. Final Report, December 1971 Through May 1973.  

ERIC Educational Resources Information Center

An experimental computer-assisted instructional (CAI) system is described. The first segment of the report discusses some basic considerations in the design of the system in which as many features as possible of a large-scale CAI system were implemented on a minicomputer. Aspects of the system which are elaborated upon include the PDP-11 computer…

Bleistein, Sandra; West, Anita S.

13

A brief description of the Medical Information Computer System (MEDICS). [real time minicomputer system  

NASA Technical Reports Server (NTRS)

The Medical Information Computer System (MEDICS) is a time shared, disk oriented minicomputer system capable of meeting storage and retrieval needs for the space- or non-space-related applications of at least 16 simultaneous users. At the various commercially available low cost terminals, the simple command and control mechanism and the generalized communication activity of the system permit multiple form inputs, real-time updating, and instantaneous retrieval capability with a full range of options.

Moseley, E. C.

1974-01-01

14

A Signal Averaging Interface Between A Biomation 802 and a Declab-11\\/MNC Minicomputer  

Microsoft Academic Search

A hardware\\/software interface is described which allows for high speed data transfer and real time signal averaging between a Biomation 802 transient recorder and a DEC LSI-11\\/23 based minicomputer. Two 16 bit digital lines were used for I\\/O transfer between the devices. The interface allows for digitizing and averaging of up to 128 spectra at repetition rates of up to

Gerard M. Liesegang; Anthony Houston

1984-01-01

15

CDC/1000: a Control Data Corporation remote batch terminal emulator for Hewlett-Packard minicomputers  

SciTech Connect

The Control Data Corporation Type 200 User Terminal utilizes a unique communications protocol to provide users with batch mode remote terminal access to Control Data computers. CDC/1000 is a software subsystem that implements this protocol on Hewlett-Packard minicomputers running the Real Time Executive III, IV, or IVB operating systems. This report provides brief descriptions of the various software modules comprising CDC/1000, and contains detailed instructions for integrating CDC/1000 into the Hewlett Packard operating system and for operating UTERM, the user interface program for CDC/1000. 6 figures.

Berg, D.E.

1981-02-01

16

Prickett and Lonnquist aquifer simulation program for the Apple II minicomputer  

SciTech Connect

The Prickett and Lonnquist two-dimensional groundwater model has been programmed for the Apple II minicomputer. Both leaky and nonleaky confined aquifers can be simulated. The model was adapted from the FORTRAN version of Prickett and Lonnquist. In the configuration presented here, the program requires 64 K bits of memory. Because of the large number of arrays used in the program, and memory limitations of the Apple II, the maximum grid size that can be used is 20 rows by 20 columns. Input to the program is interactive, with prompting by the computer. Output consists of predicted lead values at the row-column intersections (nodes).

Hull, L.C.

1983-02-01

17

Computer-assisted TPN calculations: time savings and improved accuracy associated with use of a minicomputer.  

PubMed

A pediatric TPN computer program, written in Cobol 74 machine language, was developed for use on a minicomputer system. The program calculates the volume of each ingredient needed to prepare a pediatric TPN solution, generates a recipe work card and labels, calculates clinical monitoring information for each patient and develops a clinical monitoring profile for the pharmacist to use in monitoring parenteral nutrition therapy. Use of the program resulted in a significant reduction (71%) in the time needed ot complete TPN calculations. Significant decreases in calculation and labeling errors were also realized. PMID:10312684

Raehtz, K G; Walker, P C

1988-09-01

18

A minicomputer based software system for the selection of optimal subsets of Thematic Mapper channels  

NASA Technical Reports Server (NTRS)

A software system has been developed and implemented on a minicomputer for feature selection based on two inter-dependent methods. The first is an enhancement of the traditional approach based on optimizing interclass average separabilities. The second is based on a Monte Carlo simulation of multispectral data and machine classification with subsequent estimation of classification accuracy as a function of channel subset. The two methods are mutually supportive - the first allows rapid screening whereas the second is based on the more solid theoretical foundation of maximizing classification accuracy.

Card, D. H.; Angelici, G. L.

1983-01-01

19

Potential of minicomputer/array-processor system for nonlinear finite-element analysis  

NASA Technical Reports Server (NTRS)

The potential of using a minicomputer/array-processor system for the efficient solution of large-scale, nonlinear, finite-element problems is studied. A Prime 750 is used as the host computer, and a software simulator residing on the Prime is employed to assess the performance of the Floating Point Systems AP-120B array processor. Major hardware characteristics of the system such as virtual memory and parallel and pipeline processing are reviewed, and the interplay between various hardware components is examined. Effective use of the minicomputer/array-processor system for nonlinear analysis requires the following: (1) proper selection of the computational procedure and the capability to vectorize the numerical algorithms; (2) reduction of input-output operations; and (3) overlapping host and array-processor operations. A detailed discussion is given of techniques to accomplish each of these tasks. Two benchmark problems with 1715 and 3230 degrees of freedom, respectively, are selected to measure the anticipated gain in speed obtained by using the proposed algorithms on the array processor.

Strohkorb, G. A.; Noor, A. K.

1983-01-01

20

MCAI: Minicomputer-Aided Instruction  

ERIC Educational Resources Information Center

Discusses educational programs carried out by a minimum system which consists of a PDP-8/L computer with 4K memory and an ASR-33 teletype. Indicates that an entire curriculum with 450 students can be handled by simply adding some components. (CC)

Breneman, G. L.

1973-01-01

21

Minicomputer-controlled frequency generator  

NASA Technical Reports Server (NTRS)

Extremely-accurate and low-phase-noise frequency generator varies oscillator frequency as predetermined function of time. System could be used: (a) to automatically vary transmission frequencies in accordance with seasonal and diurnal changes in ionospheric conditions, (b) as automatic tuner for heterodyne receivers, or (c) as control element for phase-locked telemetry receivers.

Winkelstein, R. A.

1974-01-01

22

Of Mice and Minicomputers: Computer Alternatives for Student Publications.  

ERIC Educational Resources Information Center

Considers the advantages and disadvantages of various microcomputer hardware and software alternatives for the campus newspaper staff. Looks at hardware factors such as cost, speed, expandability, and software availability. Assesses choices in word processing and business applications software. (AYC)

Overbeck, Wayne

1984-01-01

23

GENFIT: A General Least Squares Curve Fitting Program for Mini-Computer.  

National Technical Information Service (NTIS)

GENFIT is a basic data processing program, suitable for small on-line computers. In essence the program solve the curve fitting problem by using the non-linear least squares method. A data set consisting of a series of points in the X-Y plane is fitted to...

S. Shalev

1977-01-01

24

Administrative Minicomputer Complex as an Extension to the Central Computing Facility.  

National Technical Information Service (NTIS)

Lawrence Livermore Laboratory currently operates a large central computing facility essentially configured with 4 CDC 7600 computers and 2 CDC STAR 100 computers, a trillion bit storage device, and several communication networks including one composed of ...

D. L. Seibel

1976-01-01

25

Retrieving Records from a Gigabyte of Text on a Mini-Computer Using Statistical Ranking  

Microsoft Academic Search

Statistically based ranked retrieval of records using keywords provides many advantages over traditional Boolean retrieval methods, especially for end users. This approach to retrieval, however, has not seen wide- spread use in large operational retrieval systems. To show the feasibility of this retrieval methodology, re- search was done to produce very fast search tech- niques using these ranking algorithms, and

Donna Harman; Gerald Candela

1990-01-01

26

Apparatus for Expanding the Memory of a Mini-Computer System.  

National Technical Information Service (NTIS)

Apparatus for storing information to be used by a data processing system which employs a mini computer, where the mini computer is incapable of addressing more than a specified maximum number of discrete storage locations. The apparatus includes a plurali...

R. E. Page R. B. Brackett

1979-01-01

27

The chemical abundances of the Cassiopeia A fast-moving knots - Explosive nucleosynthesis on a minicomputer  

NASA Technical Reports Server (NTRS)

A simplified nuclear reaction network for explosive nucleosynthesis calculations is described in which only the most abundant nuclear species and the most important reactions linking these species are considered. This scheme permits the exploration of many cases without excessive computational effort. Good agreement with previous calculations employing more complex reaction networks is obtained. This scheme is applied to the observed chemical abundances of the fast-moving knots in the supernova remnant Cassiopeia A and it is found that a wide range of initial conditions could yield the observed abundances. The abundances of four of the knots with significant and different amounts of elements heavier than oxygen are consistent with an origin in material of the same initial composition but processed at different peak temperatures and densities. Despite the observed high oxygen abundances and low abundances of light elements in the knots, they did not necessarily undergo incomplete oxygen burning; in fact, it is not even necessary that oxygen have been present in the initial composition. The agreement between the calculated and observed chemical abundances in Cas A and similar supernova remnants depends primarily upon the relevant nuclear physics and does not provide strong evidence in favor of any particular model of the supernova event.

Johnston, M. D.; Joss, P. C.

1980-01-01

28

The Georgetown University Library Information System (LIS): a minicomputer-based integrated library system.  

PubMed

Georgetown University's Library Information System (LIS), an integrated library system designed and implemented at the Dahlgren Memorial Library, is broadly described from an administrative point of view. LIS' functional components consist of eight "user-friendly" modules: catalog, circulation, serials, bibliographic management (including Mini-MEDLINE), acquisitions, accounting, networking, and computer-assisted instruction. This article touches on emerging library services, user education, and computer information services, which are also changing the role of staff librarians. The computer's networking capability brings the library directly to users through personal or institutional computers at remote sites. The proposed Integrated Medical Center Information System at Georgetown University will include interface with LIS through a network mechanism. LIS is being replicated at other libraries, and a microcomputer version is being tested for use in a hospital setting. PMID:6688749

Broering, N C

1983-07-01

29

High speed transmission line fault impedance calculation using a dedicated minicomputer  

Microsoft Academic Search

An algorithim for calculating apparent transmission line impedance to the point of a fault is presented as an approach to distance type protection via a dedicated digital computer. Phase voltages and currents are sampled asynchronously approximately 24 times per cycle and operated on to yield apparent resistances and reactances. Descrimination between phase to phase, phase to ground and two phase

J. G. Gilbert; R. J. Shovlin

1975-01-01

30

A variant of a descriptive epidemiological study of cancer with the aid of a minicomputer.  

PubMed

The presented method of descriptive epidemiological study with the aid of a computer was designed using the model of an average district with a data file of carcinoma incidence from the period 1975-1983. The method is based on processing the statistical characteristics of a data file and on their evaluation. Plotting the coordinates of the communities and of the boundaries of the district constitutes the frame for the construction of maps. The population is divided into age groups of 5 years, incidence is standardized with respect to the age standard of the district. The selection of boundaries (isolines) of zones in the maps is based on the evaluation of the distribution of incidences and on the relative number of inhabitants in communities classified according to the standardized values. The application of the study to the work of centers for clinical oncology is discussed. PMID:3713928

Augustin, J; Pavlis, J

1986-01-01

31

MICTPT - A minicomputer general-purpose microwave two-port analysis program  

NASA Technical Reports Server (NTRS)

The implementation of a microwave network-analysis program for computers with 4K words of memory is described. The program is capable of the frequency analysis of networks which include interconnections of lumped elements, transmission lines, waveguides, and any two-port which is described by the elements of a scattering matrix. The network can be described mnemonically rather than by numerical codes. For each frequency in the range, the entire network is collapsed into a single equivalent A matrix, and the input impedance and other characteristics are calculated.

Olson, D. H.; Rosenbaum, F. J.

1974-01-01

32

Proving the correctness of a flight-director program for an airborne minicomputer  

NASA Technical Reports Server (NTRS)

Program verification procedures are described and used to determine the correctness of a program written for an airborne computer. The basic method relies on the inductive assertion method of Floyd (1967), modified and extended for application to a machine-language situation. Correctness considerations in the flight director program include self-modification, system correctness, executable instructions, overflow, approximate calculations with fractional quantities, and fixed point scaling. An example proof of correctness, which proceeds by proving the correctness of a certain subroutine, is provided.

Maurer, W. D.

1977-01-01

33

SAL--A Simple Author Language for a Minicomputer Assisted Instruction System  

ERIC Educational Resources Information Center

A multimedia CAI system developed by the Navy's Systems Test Equipment Program is described. Courseware and courseware aids are presented, including Simple Author Language, which was designed to facilitate CAI program development by nonprogramming instructors. Automatic CAI program generation facilitating courseware transportability between…

Henry, Robert D.; Howard, James A

1977-01-01

34

A new option of SAMPO80 \\/A minicomputer program for gamma spectrum analysis\\/ for detection limit calculations  

Microsoft Academic Search

The code SAMPO80 is widely used for evaluation of gamma spectra. The program system containing 3 independent parts performs\\u000a peak shape calibration, automatic peak search, peak fitting and nuclide identification. Fulfilling the demands of low level\\u000a counting a fourth part was added to SAMPO80 for the calculation of detection limits. The program determines the limit of detection\\u000a for any nuclide

P. Zombori; F. Steger

1986-01-01

35

Study of calculated and measured time dependent delayed neutron yields. [TX, for calculating delayed neutron yields; MATINV, for matrix inversion; in FORTRAN for LSI-II minicomputer  

SciTech Connect

Time-dependent delayed neutron emission is of interest in reactor design, reactor dynamics, and nuclear physics studies. The delayed neutrons from neutron-induced fission of /sup 232/U, /sup 237/Np, /sup 238/Pu, /sup 241/Am, /sup 242m/Am, /sup 245/Cm, and /sup 249/Cf were studied for the first time. The delayed neutron emission from /sup 232/Th, /sup 233/U, /sup 235/U, /sup 238/U, /sup 239/Pu, /sup 241/Pu, and /sup 242/Pu were measured as well. The data were used to develop an empirical expression for the total delayed neutron yield. The expression gives accurate results for a large variety of nuclides from /sup 232/Th to /sup 252/Cf. The data measuring the decay of delayed neutrons with time were used to derive another empirical expression predicting the delayed neutron emission with time. It was found that nuclides with similar mass-to-charge ratios have similar decay patterns. Thus the relative decay pattern of one nuclide can be established by any measured nuclide with a similar mass-to-charge ratio. A simple fission product yield model was developed and applied to delayed neutron precursors. It accurately predicts observed yield and decay characteristics. In conclusion, it is possible to not only estimate the total delayed neutron yield for a given nuclide but the time-dependent nature of the delayed neutrons as well. Reactors utilizing recycled fuel or burning actinides are likely to have inventories of fissioning nuclides that have not been studied until now. The delayed neutrons from these nuclides can now be incorporated so that their influence on the stability and control of reactors can be delineated. 8 figures, 39 tables.

Waldo, R.W.

1980-05-01

36

Reliability in Multiprocessor Systems. A Case Study of a Multi-Minicomputer, a Modular Multi-Microprocessor and a Voted Multiprocessor.  

National Technical Information Service (NTIS)

This report consists of two papers that treat reliability of the multiprocessor systems at CMU. The first paper discusses the multiprocessor architectures, reliability features (hardware and software), and measured reliability data. The second paper prese...

D. P. Siewiorek V. Kini

1978-01-01

37

Interface for rapid data transfer and evaluation  

Microsoft Academic Search

Minicomputers are quite useful for the acquisition and reduction of data from physical and biomedical research equipment. Minicomputers have become progressively less expensive and are now comparatively easily available for research investigators. At that point, the problem arises to interface minicomputers effectively to research equipment. This interfacing task became recently somewhat facilitated by specialized books and articles. Quite recently minicomputers

Pradeep Shah; Rudy Haidle; George Czerlinski

1974-01-01

38

Design of a Microprocessor-Based Control, Interface and Monitoring (Cim Unit for Turbine Engine Controls Research.  

National Technical Information Service (NTIS)

High speed minicomputers were used in the past to implement advanced digital control algorithms for turbine engines. These minicomputers are typically large and expensive. It is desirable for a number of reasons to use microprocessor-based systems for fut...

J. C. Delaat J. F. Soeder

1983-01-01

39

Buying a Hardware Software System.  

ERIC Educational Resources Information Center

Description of features of integrated learning systems (ILS) compares minicomputer- and microcomputer-based systems; provides updated buyers' guide information on networked-microcomputer ILSs, ILS courseware, and minicomputer-based ILSs; and presents educators' opinions of these systems. (MBR)

Reinhold, Fran

1986-01-01

40

Improved computerized acquisition and analysis of gamma ray spectra  

Microsoft Academic Search

A new minicomputer based gamma spectroscopy system supports concurrent operation of up to four detectors, with 8k channels per detector. The minicomputer employs 896 kilobytes of RAM and a 25 megabyte hard disk, and runs under a multiuser operating system. Spectral analyses use algorithms adapted from the GAUSS V computer code and optimized for use on a minicomputer. Major improvements

T. C. Chapman; J. M. Gross

1984-01-01

41

Field Evaluation of a Mini Learning Resource Aided Instruction System.  

ERIC Educational Resources Information Center

Very little work has been done in the broad field of computer-assisted instruction (CAI) to exploring the use of a minicomputer as another learning resource in the instructional process. Accordingly a cost-effective Learning Resource Aided Instruction (LRAI) System centered around a Data General NOVA minicomputer augmented with slide…

Attala, Emile E.; Howard, James A.

42

Dead reckoner navigation project  

NASA Technical Reports Server (NTRS)

A previous dead reckoner involved a classical gyrocompass, a Hewlett-Packard minicomputer, and a true airspeed sensor. In an effort to bring the cost of this system more in line with the realities of general aviation, recent work was done on replacing the minicomputer with a microcomputer and implementing a fluidic rate sensor in the compass system in place of the directional gyro.

Ellis, R.; Sweet, L.

1981-01-01

43

An Investigation of Alternative Cache Organizations  

Microsoft Academic Search

An investigation of the various cache schemes that are practical for a minicomputer has been found to provide considerable insight into cache organization. Simulations are used to obtain data on the performance and sensitivity of organizational parameters of various writeback and lookahead schemes. Hardware considerations in the construction of the actual cache-minicomputer are also noted and a simple cost\\/performance analysis

JAMES BELL; DAVID CASASENT; C. GORDON BELL

1974-01-01

44

Use of a computer controlled engine dynamometer for the development of automotive electronics  

Microsoft Academic Search

A computer controlled engine dynamometer was designed for the development of automotive powerplant control electronics. It includes a minicomputer with a real time control and data acquisition capabilities, a large process control computer, and a scientific data processing computer. The minicomputer controls the engine and dynamometer to duplicate in-vehicle performance and simulates proposed electronic systems. This allows functions and parameters

J. F. Jr

1973-01-01

45

An interactive computer system for emergency response and planning  

Microsoft Academic Search

An interactive computer system for meteorological data acquisition and environmental impact modeling has been developed for emergency response and planning applications by the Pacific Northwest Laboratory. The system uses a minicomputer to acquire meteorological data from automated monitoring sites, conduct data processing, and archive data. Personal computer (PC) workstations are used to retrieve archived data from the minicomputer, generate displays

C. S. Glantz; E. D. Skyllingstad; J. V. Ramsdell; G. L. Andrews; W. D. McCormack

1989-01-01

46

Downsizing a database platform for increased performance and decreased costs  

SciTech Connect

Technological advances in the world of microcomputers have brought forth affordable systems and powerful software than can compete with the more traditional world of minicomputers. This paper describes an effort at Sandia National Laboratories to decrease operational and maintenance costs and increase performance by moving a database system from a minicomputer to a microcomputer.

Miller, M.M.; Tolendino, L.F.

1993-06-01

47

Computer program and user documentation medical data tape retrieval system  

NASA Technical Reports Server (NTRS)

This volume provides several levels of documentation for the program module of the NASA medical directorate mini-computer storage and retrieval system. A biomedical information system overview describes some of the reasons for the development of the mini-computer storage and retrieval system. It briefly outlines all of the program modules which constitute the system.

Anderson, J.

1971-01-01

48

The Computer and Its Software.  

ERIC Educational Resources Information Center

The merits of networking and minicomputers in computer-assisted instruction (CAI) are reviewed. Cost figures for computer innovations and predictions about CAI are developed which include the forecast that costs will drop, minicomputers will dominate the market, and that the BASIC computer language will be the most widely used. (SK)

Davidson, Melvin G.

49

Turnkey CAD/CAM selection and evaluation  

NASA Technical Reports Server (NTRS)

The methodology to be followed in evaluating and selecting a computer system for manufacturing applications is discussed. Main frames and minicomputers are considered. Benchmark evaluations, demonstrations, and contract negotiations are discussed.

Moody, T.

1980-01-01

50

Precise Determination of the Absorption Maximum in Wide Bands  

ERIC Educational Resources Information Center

A precise method of determining absorption maxima where Gaussian functions occur is described. The method is based on a logarithmic transformation of the Gaussian equation and is suited for a mini-computer. (MR)

Eriksson, Karl-Hugo; And Others

1977-01-01

51

Simplified Extension of the LSI-11 Q-Bus for a High Energy Laser Control Application.  

National Technical Information Service (NTIS)

Antares, a large, experimental laser fusion facility under construction at Los Alamos National Laboratory in New Mexico, is controlled by a network of PDP-11 minicomputers and microprocessors. The remote nodes of the Antares control network are based on a...

L. Burczyk

1981-01-01

52

MFTF Supervisory Control and Diagnostics System Hardware.  

National Technical Information Service (NTIS)

The Supervisory Control and Diagnostics System (SCDS) for the Mirror Fusion Test Facility (MFTF) is a multiprocessor minicomputer system designed so that for most single-point failures, the hardware may be quickly reconfigured to provide continued operati...

D. N. Butner

1979-01-01

53

Debugging in a Multi-Processor Environment.  

National Technical Information Service (NTIS)

The Supervisory Control and Diagnostic System (SCDS) for the Mirror Fusion Test Facility (MFTF) consists of nine 32-bit minicomputers arranged in a tightly coupled distributed computer system utilizing a share memory as the data exchange medium. Debugging...

J. M. Spann

1981-01-01

54

Supervisory Control and Diagnostics System Distributed Operating System.  

National Technical Information Service (NTIS)

This paper contains a description of the Supervisory Control and Diagnostics System (SCDS) Distributed Operating System. The SCDS consists of nine 32-bit minicomputers with shared memory. The system's main purpose is to control a large Mirror Fusion Test ...

P. R. McGoldrick

1979-01-01

55

Evaluation of Computing Capabilities of a Hierarchy of Mini-to-Supercomputers: Applications to Ion Microscopic Analysis.  

National Technical Information Service (NTIS)

There has been a steadily increasing demand for more computational power in surface and interface analysis. This paper reports attempts to meet these demand through the use of different computing systems, ranging from mini-computer to supercomputer. Repre...

Y. C. Ling D. N. Bernardo G. H. Morrison

1988-01-01

56

Multichannel Analyzer Type CMA-3.  

National Technical Information Service (NTIS)

Multichannel analyzer CMA-3 is designed for two-parametric analysis with operator controlled logical windows. It is implemented in CAMAC standard. A single crate contains all required modules and is controlled by the PDP-11/10 minicomputer. Configuration ...

A. Czermak J. Jablonski A. Ostrowicz

1978-01-01

57

Versatile Multicomputer Data System.  

National Technical Information Service (NTIS)

A multicomputer system was designed and built to provide a means of transferring data from analytical instruments to a PDP-15 (Digital Equipment Corp., Maynard, MA) minicomputer. A model 6800 microcomputer (Motorola, Inc., Phoenix, AZ) was designed to acc...

R. F. Overman R. J. Sand

1981-01-01

58

Electron Optics Cannot Be Taught through Computation?  

ERIC Educational Resources Information Center

Describes how certain concepts basic to electron optics may be introduced to undergraduate physics students by calculating trajectories of charged particles through electrostatic fields which can be evaluated on minicomputers with a minimum of programing effort. (Author/SA)

van der Merwe, J. P.

1980-01-01

59

Experimental Spherical Near Field Antenna Test Facility, Phase 2. Volume 1: Facility Description and Measurement Results.  

National Technical Information Service (NTIS)

An experimental facility for spacecraft antennas was developed. An HP1000 minicomputer controls the measurements and performs the near field to far field transformations. Measurements were carried out on an OTS spotbeam reflector antenna and a MARECS circ...

E. L. Christensen J. E. Hansen C. K. Hansen S. B. Hansen F. H. Larsen

1981-01-01

60

Fast Processor for Spectral Analysis (Oras).  

National Technical Information Service (NTIS)

A digital peripheral for a minicomputer, microprogrammed and macroprogrammable, dedicated to geophysical measurements signal analysis is presented. Processing capabilities include linear/vectorial functions, real/complex functions, and auto/cross spectra ...

P. Gilles

1981-01-01

61

Information Technology: A Bibliography.  

ERIC Educational Resources Information Center

This selective annotated bibliography lists 86 references on the following topics: future technology for libraries, library automation, paperless information systems; computer conferencing and electronic mail, videotext systems, videodiscs, communications technology, networks, information retrieval, cataloging, microcomputers, and minicomputers.…

Wright, William F.; Hawkins, Donald T.

1981-01-01

62

Mission of the Future. Proceedings of the Annual Convention of the Association for the Development of Computer-Based Instructional Systems. Volume III: User Interest Groups Held in San Diego, California on February 27 to March 1, 1979.  

National Technical Information Service (NTIS)

The third of three volumes of papers presented at the 1979 ADCIS convention, this collection includes 30 papers presented to special interest groups--implementation, minicomputer users, National Consortium for Computer Based Music Instruction, and PLATO u...

1979-01-01

63

PWM Control ICs for Switch-Mode Power Supplies,  

National Technical Information Service (NTIS)

Progress is being made in the development of the more compact and lighter switch-mode power supplies widely used in personal computers, minicomputers, and general electronic equipment. MOS-FETs, for example, have started to repace the conventional bipolar...

N. Nagakata S. Mori K. Kano S. Mori T. Iida

1988-01-01

64

A High Level Language for Data Acquisition and Process Control Lanac - Uma Linguagem de Alto Nivel Para Aquisicao de Dados E Controle de Processos Lgn in Portugese; English Summary.  

National Technical Information Service (NTIS)

An ALGOL like language, LANAC, with statements in Portuguese, without recursion, is described. It was developed at INPE/CNPq for minicomputers applied in real time systems; so it has available SEMAPORES for concurrent process synchronization. The LANAC co...

F. E. Decarvalhoviola S. D. Fischer C. Derennaesouza

1981-01-01

65

Coastal Upwelling Ecosystems Analysis Program. System Reference Manual -- Interactive Real-Time Information System (IRIS).  

National Technical Information Service (NTIS)

The report presents a description of the entire IRIS system. The Coastal Upwelling Ecosystems Analysis, CUEA, Interactive Real-Time Information System represents an increase in sea-going computing power, made possible by recent improvements in mini-comput...

P. B. Bass

1972-01-01

66

Real-time graphics display of mass variation or elemental concentration during electron beam microanalysis using a general purpose computer.  

PubMed

A method is described for using a general purpose multi-process minicomputer for the real-time display of graphic summaries of a variety of spectroscopic results while the spectrum acquisition is simultaneously underway. PMID:3373523

Davilla, S D; Ingram, P; LeFurgey, A; Lamvik, M K

1988-02-01

67

Data Acquisition System for a Fast Fluidized Bed.  

National Technical Information Service (NTIS)

This data acquisition system makes use of the minicomputer NORD 100. Processed data are stored on a floppy disk and they include 58 temperatures, 21 differential pressures and 7 other pressures, fuel flows, oxygen contents and primary effect. (ERA citatio...

B. G. Bergdahl

1983-01-01

68

A Scanning Laser Rangefinder for a Robotic Vehicle.  

National Technical Information Service (NTIS)

A scanning Laser Rangefinder (LRF) which operates in conjunction with a minicomputer as part of a robotic vehicle is described. The description, in sufficient detail for replication, modification, and maintenance, includes both hardware and software. Also...

R. A. Lewis A. R. Johnston

1977-01-01

69

Marine Terminal Control System (TCS).  

National Technical Information Service (NTIS)

This report describes the design and development of a prototype computer-based marine terminal control system with automatic container identification, documents the mini-computer system configuration with input/output devices positioned at Key control poi...

D. Collins

1976-01-01

70

Learning by Interactive Programming: Microcomputer Applications.  

ERIC Educational Resources Information Center

Clarifies often misconstrued distinctions with regard to microcomputers, minicomputers, and maxicomputers. Criteria for educational use of microcomputers are examined, including its potential for language and peripheral expansion, and its communication capabilities. (MER)

De Laurentiis, Emiliano

1980-01-01

71

The Computer in the School: A Case Study.  

ERIC Educational Resources Information Center

Describes how Milton Academy (Massachusetts) purchased its PDP 11/40 minicomputer and used it for all facets of the school's operations, including classwork, administration, and extracurricular activities. (Author/RW)

Zucker, Andrew A.

1982-01-01

72

Remote hard copy. Volume 3. Systems programming manual  

SciTech Connect

The software used to operate and maintain the remote hard copy is described. All operating software that runs in the NOVA minicomputers is covered as are various utility and diagnostic programs used for creating and checking this software. 2 figures.

Simons, R.W.

1980-03-01

73

Central Receiver Test Facility Control and Data Systems.  

National Technical Information Service (NTIS)

The central Receiver test Facility (CRTF) is the primary solar test facility for the Department of Energy and is operated by Sandia Laboratories, Albuquerque, New Mexico. The multiple minicomputer control and data systems utilized in CRTF are described. (...

D. B. Davis

1979-01-01

74

Locomotive Data Acquisition Package Phase II System Development. Final Report. Volume 2. LDR Operations and Maintenance.  

National Technical Information Service (NTIS)

An examination of the problems associated with railroad locomotive data acquisition is presented. The design of a minicomputer based locomotive data acquisition system is also presented. Special attention is placed on meeting the functional characteristic...

R. K. Abbott F. A. Kirsten D. R. Mullen S. B. Sidman J. G. Miller

1980-01-01

75

A dual method for maximum entropy restoration  

NASA Technical Reports Server (NTRS)

A simple iterative dual algorithm for maximum entropy image restoration is presented. The dual algorithm involves fewer parameters than conventional minimization in the image space. Minicomputer test results for Fourier synthesis with inadequate phantom data are given.

Smith, C. B.

1979-01-01

76

Low-cost Landsat digital processing system for state and local information systems  

NASA Technical Reports Server (NTRS)

The paper details a minicomputer-based system which is well within the budget of many state, regional, and local agencies that previously could not afford digital processing capability. In order to achieve this goal a workable small-scale Landsat system is examined to provide low-cost automated processing. It is anticipated that the alternative systems will be based on a single minicomputer, but that the peripherals will vary depending on the capability emphasized in a particular system.

Hooper, N. J.; Spann, G. W.; Faust, N. L.; Paludan, C. T. N.

1979-01-01

77

A digital TV system for the detection of high speed human motion  

Microsoft Academic Search

Two array cameras and a force plate were linked to a PDP-11\\/34 minicomputer for an on-line recording of high speed human motion. A microprocessor-based interface system was constructed to allow preprocessing and coordinating of the video data before being transferred to the minicomputer. Control programs of the interface system are stored in the disk and loaded into the program storage

R. C. Fang

1981-01-01

78

User microprogrammable processors for high data rate telemetry preprocessing  

NASA Technical Reports Server (NTRS)

The use of microprogrammable processors for the preprocessing of high data rate satellite telemetry is investigated. The following topics are discussed along with supporting studies: (1) evaluation of commercial microprogrammable minicomputers for telemetry preprocessing tasks; (2) microinstruction sets for telemetry preprocessing; and (3) the use of multiple minicomputers to achieve high data processing. The simulation of small microprogrammed processors is discussed along with examples of microprogrammed processors.

Pugsley, J. H.; Ogrady, E. P.

1973-01-01

79

The revolution in data gathering systems  

NASA Technical Reports Server (NTRS)

Data acquisition systems used in NASA's wind tunnels from the 1950's through the present time are summarized as a baseline for assessing the impact of minicomputers and microcomputers on data acquisition and data processing. Emphasis is placed on the cyclic evolution in computer technology which transformed the central computer system, and finally the distributed computer system. Other developments discussed include: medium scale integration, large scale integration, combining the functions of data acquisition and control, and micro and minicomputers.

Cambra, J. M.; Trover, W. F.

1975-01-01

80

Implementation of a personal-computer-based real-time hardware-in-the-loop U.S. Army aviation and missile command simulator  

Microsoft Academic Search

With the rapid increase in computational power of the standard personal computer, many tasks that could only be performed by a mini-computer or mainframe can now be performed by the common personal computer. Ten years ago, computational and data transfer requirements for a real-time hardware-in-the-loop simulator could only be met by specialized high performance mini-computers. Today, personal computers shoulder the

David L. Beck; Robert G. Bennett

2002-01-01

81

[The ideal computer for ECG analysis (author's transl)].  

PubMed

An on-line minicomputer with a suitable structure turns out to be the ideal system for ECG interpretation. The motivations for this conclusion come both from the nature of the ECG analysis process and from the solution that the present state of the process and from the solution that the present state of the computer technology suggests for the controversy on large-scale computers versus minicomputers in the medical environment. In this paper both these aspects of the problem are briefly discussed and an ideal structure is proposed for a system based on a minicomputer. The main goals of this system are flexibility, adequate man-machine interfacing, low cost, high reliability and minimal maintenance, minimum installation space and site preparation. PMID:1091524

De Lotto, I

1975-01-01

82

MINIS: Multipurpose Interactive NASA Information System  

NASA Technical Reports Server (NTRS)

The Multipurpose Interactive NASA Information Systems (MINIS) was developed in response to the need for a data management system capable of operation on several different minicomputer systems. The desired system had to be capable of performing the functions of a LANDSAT photo descriptive data retrieval system while remaining general in terms of other acceptable user definable data bases. The system also had to be capable of performing data base updates and providing user-formatted output reports. The resultant MINI System provides all of these capabilities and several other features to complement the data management system. The MINI System is currently implemented on two minicomputer systems and is in the process of being installed on another minicomputer system. The MINIS is operational on four different data bases.

1976-01-01

83

A digital TV system for the detection of high speed human motion  

NASA Astrophysics Data System (ADS)

Two array cameras and a force plate were linked to a PDP-11/34 minicomputer for an on-line recording of high speed human motion. A microprocessor-based interface system was constructed to allow preprocessing and coordinating of the video data before being transferred to the minicomputer. Control programs of the interface system are stored in the disk and loaded into the program storage areas of the microprocessor before the interface system starts its operation. Software programs for collecting and processing video and force data have been written. Experiments on the detection of human jumping have been carried out. Normal gait and amputee gait have also been recorded and analyzed.

Fang, R. C.

1981-08-01

84

Computer Program and User Documentation Medical Data Input System  

NASA Technical Reports Server (NTRS)

Several levels of documentation are presented for the program module of the NASA medical directorate minicomputer storage and retrieval system. The biomedical information system overview gives reasons for the development of the minicomputer storage and retrieval system. It briefly describes all of the program modules which constitute the system. A technical discussion oriented to the programmer is given. Each subroutine is described in enough detail to permit in-depth understanding of the routines and to facilitate program modifications. The program utilization section may be used as a users guide.

Anderson, J.

1971-01-01

85

A program for mass spectrometer control and data processing analyses in isotope geology; written in BASIC for an 8K Nova 1120 computer  

USGS Publications Warehouse

A system is described which uses a minicomputer to control a surface ionization mass spectrometer in the peak switching mode, with the object of computing isotopic abundance ratios of elements of geologic interest. The program uses the BASIC language and is sufficiently flexible to be used for multiblock analyses of any spectrum containing from two to five peaks. In the case of strontium analyses, ratios are corrected for rubidium content and normalized for mass spectrometer fractionation. Although almost any minicomputer would be suitable, the model used was the Data General Nova 1210 with 8K memory. Assembly language driver program and interface hardware-descriptions for the Nova 1210 are included.

Stacey, J. S.; Hope, J.

1975-01-01

86

Distributed Administrative Management Information System (DAMIS).  

ERIC Educational Resources Information Center

Columbia University's major program to distribute its central administrative data processing to its various schools and departments is described. The Distributed Administrative Management Information System (DAMIS) will link every department and school within the university via micrcomputers, terminals, and/or minicomputers to the central…

Juckiewicz, Robert; Kroculick, Joseph

87

Micro-Mail User's Guide.  

National Technical Information Service (NTIS)

Two NOSC electronic mail utilities, MSG (UNIX-based) and umail (PC-based) are contrasted. umail is an electronic mail utility that transfers mail between mini-computers running the UNIX operating system and personal computers running the MS-DOS operating ...

B. Bueche H. R. Hall

1988-01-01

88

DATMAN FORTRAN USER'S GUIDE VERSION 3.0  

EPA Science Inventory

DATMAN is a data management system which runs on a variety of minicomputers. Currently, versions are supported on the following computers: PRIME and PDP 11/70 under IAS. DATMAN has facilities for creating data bases, retrieving selected data from data in data bases, retrieving se...

89

Atmospheric and Oceanographic Information Processing System (AOIPS) system description  

NASA Technical Reports Server (NTRS)

The development of hardware and software for an interactive, minicomputer based processing and display system for atmospheric and oceanographic information extraction and image data analysis is described. The major applications of the system are discussed as well as enhancements planned for the future.

Bracken, P. A.; Dalton, J. T.; Billingsley, J. B.; Quann, J. J.

1977-01-01

90

Evaluation of a statistical programming environment for analytical chemistry  

Microsoft Academic Search

The power of modern personal computers and the convenience of standardized graphical user interfaces (Microsoft Windows, Macintosh System 7) have recently allowed them to be used for ‘heavy-weight’ statistical and chemometrics programs which formerly needed mainframe or minicomputers. The statistical software package S-PLUS has been evaluated for ease of use, scope, programming power, graphical facilities, accuracy, validation capabilities, and price.

Max Feinberg

1996-01-01

91

GSFIT: The Code for Analysis of gamma -Ray Spectrum with Use of Mini-Size Computers.  

National Technical Information Service (NTIS)

For the routine processing of foil counting data measured at FCA using Ge detector, a gamma -ray spectrum analyzing code GSFIT have been written in FORTRAN-77 for the minicomputer PDP-11/44 (Digital Equipment Corp.), providing a variety of input and proce...

T. Koakutsu

1984-01-01

92

PC based analysis of gamma-ray spectra  

Microsoft Academic Search

New sophisticated gamma spectral analysis software makes a personal computer based gamma spectroscopy system more capable. The personal computer employs 512 kbytes of RAM and a 20 Mbyte hard disk. Spectral analysis uses algorithms adapted from a minicomputer version of the GAUSS V code and optimized for use on a personal computer. particular care was taken to optimize the peak

T. C. Chapman

1988-01-01

93

Power of heterogeneous computing as a vehicle for implementing E 3 medical decision support systems  

Microsoft Academic Search

A computer system of PCs, workstations, minicomputers etc. connected together via a local area network or wide area network represents a large pool of computational power. Our aim is to use this power for the implementation of an E3 (efficiency, effectiveness, efficacy) medical decision support system, which can be based on different models, the best providing an explanation together with

Vili Podgorelec; Janez Brest; Peter Kokol

2000-01-01

94

A system for the management of requests at an image data bank. M.S. Thesis  

NASA Technical Reports Server (NTRS)

An automated system was implemented to supersede existing manual procedures in fulfilling user requests made to a remote sensing data bank, concerning specifically LANDSAT imagery. The system controls the several production steps from request entry to the shipment of each final product. Special solutions and techniques were employed due to the severe limitations, in both hardware and software of the host minicomputer system.

Debarrosaguirre, J. L. (principal investigator)

1984-01-01

95

Multi-Channel Amplitude Analyzer CMA-1 and CMA-2.  

National Technical Information Service (NTIS)

Analyzer CMA is implemented in the CAMAC system. A single crate contains the required modules and is controlled by the PDP-11/10 minicomputer with 8k 16 bit word memory. Spectra can be accumulated in full 4k, 2k 1k or 0,5k. System provides: display of sto...

A. Czermak J. Jablonski A. Ostrowicz

1977-01-01

96

An inexpensive vehicle speed detector  

NASA Technical Reports Server (NTRS)

Low-power minicomputer can plug into automobile cigarette lighter. It measures time it takes observed car to travel premeasured distance and provides immediate readout of speed. Potentially, detector could be manufactured for less than $200 per unit and would have very low maintenance cost.

Broussard, P., Jr.

1973-01-01

97

A practical multi-spectrum Hadamard Transform Spectrometer  

NASA Technical Reports Server (NTRS)

A Hadamard Transform Spectrometer (HTS) which simultaneously obtains fifteen infrared spectra, each having 255 spectral elements was constructed. Spectra are obtained essentially in real time through use of a minicomputer with 8K words of memory and a CRT display. This permits operation of the instrument in the field.

Tai, M. H.; Briotta, D. A., Jr.; Kamath, N.; Harwit, M. O.

1975-01-01

98

A Method of Examining in Detail Electric Arc Furnace Performance  

Microsoft Academic Search

A method of data acquisition and analysis is described that has been developed to assess in detail the performance of electric arc furnaces. The method has been implemented on a small single user minicomputer (a PDP 11\\/40) and on a large mainframe (an IBM 3033). The method was specifically developed in order to determine reliable statistical parameters that can be

J. D. Lavers; Behnam Danai; P. P. Biringer; Donald J. Chee-Hing

1985-01-01

99

NEUTRON ACTIVATION ANALYSIS FOR SIMULTANEOUS DETERMINATION OF TRACE ELEMENTS IN AMBIENT AIR COLLECTED ON GLASS-FIBER FILTERS  

EPA Science Inventory

Arsenic with 25 other elements are simultaneously determined in ambient air samples collected on glass-fiber filter composites at 250 United States sites. The instrumental neutron activation analysis (NAA) technique combined with the power of a dedicated mini-computer resulted in...

100

LTX-A system for the directed automatic design of LSI circuits  

Microsoft Academic Search

LTX is a minicomputer-based design system for largescale integrated circuit chip layout which offers a flexible set of interactive and automatic procedures for translating a circuit connectivity description into a finished mask design. The system encompasses algorithms for two-dimensional placement, string placement, exploitation of equivalent terminals, decomposition of routing into channels, and channel routing. Circuit connectivity is preserved during interactive

G. Persky; D. N. Deutsch; D. G. Schweikert

1988-01-01

101

Automatic precision measurement of spectrograms  

Microsoft Academic Search

A fully automatic comparator has been designed and implemented to determine precision wavelengths from high-resolution spectrograms. The system consists of a comparator, slightly modified for simultaneous data acquisition from two parallel scans of the spectrogram, interfaced to a minicomputer. The control software embodies three innovations of special interest: (1) data acquired from two parallel scans are compared and used to

B. A. Palmer; C. J. Sansonetti; K. L. Andrew

1978-01-01

102

The interactive-graphic man-computer dialogue in computer-aided circuit design  

Microsoft Academic Search

The crucial role played by the man-computer dialogue in computer-aided circuit design, and particularly within an interactive graphic medium, is demonstrated by reference to a working circuit design facility implemented on a minicomputer. The detailed nature of this facility and the techniques illustrated are related to the circuit design process and the behavioral characteristics of the human designer. Special attention

ROBERT SPENCE; MARK APPERLEY

1977-01-01

103

A simple approach to computer aided milling with interactive graphics  

Microsoft Academic Search

This paper describes CAMILL, a system for computer aided milling of ship hull models defined with interactive graphics. The major hardware components of CAMILL are a mini-computer based refresh display and a three axis numerically controlled milling machine. For hardcopy documentation there is a large flatbed plotter. The two major software components are an interactive display program and a cutting

Steven G. Satterfield; Francisco Rodriguez; David F. Rogers

1977-01-01

104

GPGS: a device-independent general purpose graphic system for stand-alone and satellite graphics  

Microsoft Academic Search

GPGS is a subroutine package offering powerful and versatile support for passive and interactive vector graphics, for time-sharing, batch, and stand-alone minicomputer systems. The package is computer, language, and operating system, as well as display device independent. Its key purpose is to allow for transportabiliit of programs and programmers by providing easy to learn, high level features. The applications programmer

L. C. Caruthers; J. Van Den Bos; A. Van Dam

1977-01-01

105

The interactive digitizing of polygons and the processing of polygons in a relational database  

Microsoft Academic Search

A system is described for the interactive digitizing of polygons for such two-dimensional spatial modeling applications as growth studies and thematic map production. A digitizer connected online to a mini-computer with a refresh display is used for capturing polygon data from source documents. An area boundary network is developed by digitizing nodes, pointing to node pairs, and then digitizing edges

John F. McIntosh

1978-01-01

106

The application of microprocessors to strapdown inertial navigation  

NASA Technical Reports Server (NTRS)

The paper describes the nature of strapdown navigators and the computational requirements associated with them. A current system design is then described in which three limited-capability microcomputers perform the tasks previously assigned to a powerful minicomputer. In addition, a technique employing dedicated microprocessors in place of conventional analog electronics in the gyroscope control loops is discussed.

Napjus, G. A.

1974-01-01

107

PRIME Networking at the University of Arizona.  

ERIC Educational Resources Information Center

The evolution of PRIME networking at the University of Arizona is described. A network of super minicomputers dedicated to administrative computing was established that accommodated online, interactive applications and that supported a variety of software packages to aid in the rapid development of systems. The first microcomputer, a PRIME 550,…

Edgar, Joseph L.

108

Catastrophe Theory as a Tool for Determining Synchronous Power System Dynamic Stability  

Microsoft Academic Search

A mathematical method, Catastrophe Theory, is applied to the problem of electrical power system dynamic stability. It is suggested that this offers a method for the continual monitoring of power system stability margins by the use of visual graphic display produced by a dedicated minicomputer using information monitored from the power system. The approach arises from long experience in the

A. A. Sallam; J. L. Dineley

1983-01-01

109

Supervisors with Micros: Trends and Training Needs.  

ERIC Educational Resources Information Center

Results of a study conducted by Purdue University concerning the use of computers by supervisors in manufacturing firms are presented and discussed. Examines access to computers, minicomputers versus mainframes, training time on computers, replacement of staff, creation of personnel problems, and training methods. (CT)

Bryan, Leslie A., Jr.

1986-01-01

110

Surface Modeling, Solid Modeling and Finite Element Modeling. Analysis Capabilities of Computer-Assisted Design and Manufacturing Systems.  

ERIC Educational Resources Information Center

Explores several concepts in computer assisted design/computer assisted manufacturing (CAD/CAM). Defines, evaluates, reviews and compares advanced computer-aided geometric modeling and analysis techniques. Presents the results of a survey to establish the capabilities of minicomputer based-systems with the CAD/CAM packages evaluated. (CW)

Nee, John G.; Kare, Audhut P.

1987-01-01

111

Current and Retrospective Sources of Machine Readable Monograph Cataloging Records: A Study of Their Potential Cost and Utility in Automated System Development at the University of Minnesota. Revised Edition.  

ERIC Educational Resources Information Center

A discussion of alternatives and costs for building monographic bibliographic files for an on-line management system using minicomputers at the University of Minnesota Libraries, Twin Cities Campus, considers secondary and primary sources of MARC II records, including BLACKWELL-North America, Information Dynamics Corporation BIBNET and Ohio…

Grosch, Audrey N.

112

Current and Retrospective Sources of Machine Readable Monograph Cataloging Records; A Study of Their Potential Cost and Utility in Automated System Development at the University of Minnesota.  

ERIC Educational Resources Information Center

Alternative approaches to the building of monographic bibliography files for an on-line data management system using minicomputers at the University of Minnesota Libraries' Twin Cities Campus center are described. Secondary and primary sources of the Machine-Readable Cataloging (MARC) II records are considered--including Blackwell-North America,…

Grosch, Audrey N.

113

Automatic visual inspection of hybrid microcircuits  

SciTech Connect

An automatic visual inspection system using a minicomputer and a video digitizer was developed for inspecting hybrid microcircuits (HMC) and thin-film networks (TFN). The system performed well in detecting missing components on HMCs and reduced the testing time for each HMC by 75%.

Hines, R.E.

1980-05-01

114

Study of the Practical Real-Time Implementation of High-Performance Text-to-Speech Translation Based on the MIT (Allen/Klat) Rule Programs.  

National Technical Information Service (NTIS)

Development of a system capable of generating high quality speech from full-word English text in real time, is reported. This system is based upon rules comprising the MIT Modular Speech System (MSS) using a general-purpose minicomputer and special hardwa...

J. L. Caldwell

1979-01-01

115

Digital signal processing  

Microsoft Academic Search

Markets have always influenced the central thrust of the semiconductor industry. Beginning in the early eighties, the personal computer (PC) market has been the dominant market influencing the semiconductor industry. Single-chip microprocessors (MPUs) enabled what became the huge PC market, which ultimately overshadowed the earlier minicomputer and mainframe computer markets. The popularity of PCs led to investments in increasingly more

W. Strauss

2000-01-01

116

Circulation and Finding System.  

ERIC Educational Resources Information Center

This report describes an online minicomputer-based system, one combining library inventory control with catalog access, that was implemented at Virginia Tech's main library in order to meet the demands of increased circulation activity and rising staff costs. Following overviews of the institutional environment, the systems development department,…

Pierce, A. R.

117

Computerized Medical Devices: Trends, Problems, and Safety  

Microsoft Academic Search

Virtually all of the medical devices utilizing electronics will contain a micro or minicomputer by 1990. These devices accounted for $7 billion in U.S. sales in 1984. Their capabilities can provide the means for new or greatly improved medical procedures, and ensure greater patient safety. However, these benefits can easily be compromised if ``computer safety'' is not practiced in the

H. Bassen; J. Silberberg; F. Houston; W. Knight; C. Christman; M. Greberman

1986-01-01

118

COMPUTER-CONTROLLED, REAL-TIME AUTOMOBILE EMISSIONS MONITORING SYSTEM  

EPA Science Inventory

A minicomputer controlled automotive emissions sampling and analysis system (the Real-Time System) was developed to determine vehicular modal emissions over various test cycles. This data acquisition system can sample real-time emissions at a rate of 10 samples/s. A buffer utiliz...

119

Coal mine electrical system evaluation. Volume I. Continuous monitoring. Annual report  

Microsoft Academic Search

A concept is presented to improve underground coal mine electrical system safety and availability. This proposed technique is based upon the ability to predict incipient failures in the mine power system. Prediction is made possible by a new method, developed during this research, which uses a minicomputer to implement pattern recognition algorithms. The theoretical basis of the prediction system is

L. A. Morley; J. L. Kohler

1977-01-01

120

Rotating turbine blade pyrometer  

NASA Technical Reports Server (NTRS)

Non-contacting pyrometer system optically measures surface temperature distribution on rotating turbine blade, comprising line-by-line scan via fiber optic probe. Each scan line output is converted to digital signals, temporarily stored in buffer memory, and then processed in minicomputer for display as temperature.

Buchele, D. R.; Lesco, D. J.

1974-01-01

121

Computer Control of Brookhaven 200 MeV Linac  

Microsoft Academic Search

A unified control system philosophy allows operation of the linac from a PDP-8 mini-computer with full supervisory control, data acquisition and the full computation capability of the PDP-10 located at the AGS. Interface hardware for diagnostic monitoring equipment and operational control equipment is described. Failure of any link in the control system does not necessitate shut down of the linac,

I. Weitman

1973-01-01

122

An Off-Line Simulation System for Development of Real-Time FORTRAN Programs.  

ERIC Educational Resources Information Center

Implementation of an ISA FORTRAN standard for executive functions and process input-output within a simulation system called MINIFOR provides a useful real-time program development tool for small single function, dedicated minicomputers having a FORTRAN compiler but limited program development aids. A FORTRAN-based pre-compiler is used off-line to…

White, James W.

123

Cloud Computing and the Power to Choose  

ERIC Educational Resources Information Center

Some of the most significant changes in information technology are those that have given the individual user greater power to choose. The first of these changes was the development of the personal computer. The PC liberated the individual user from the limitations of the mainframe and minicomputers and from the rules and regulations of centralized…

Bristow, Rob; Dodds, Ted; Northam, Richard; Plugge, Leo

2010-01-01

124

Description and Initial Evaluation of a Computer-Based Individual Trainer for the Radar Intercept Observer.  

ERIC Educational Resources Information Center

An individual trainer for giving students in the radar intercept observer (RIO) schools concentrated practice in procedures for air-to-air intercepts was designed around a programmable graphics terminal with two integral minicomputers and 8k of core memory. The trainer automatically administers practice in computing values of variables in the…

Rigney, Joseph W.; And Others

125

Mission of the Future. Proceedings of the Annual Convention of the Association for the Development of Computer-Based Instructional Systems. Volume III: Users Interest Groups (San Diego, California, February 27 to March 1, 1979).  

ERIC Educational Resources Information Center

The third of three volumes of papers presented at the 1979 ADCIS convention, this collection includes 30 papers presented to special interest groups--implementation, minicomputer users, National Consortium for Computer Based Music Instruction, and PLATO users. Papers presented to the implementation interest group were concerned with faculty…

Association for the Development of Computer-based Instructional Systems.

126

BATS II - A fast bubble automatic test system  

Microsoft Academic Search

A versatile, second generation bubble memory testing system (BATS II) has been built which is more than two orders of magnitude faster than our original BATS I bubble-wafer testing system. This minicomputer-based system allows arbitrary data patterns to be written and read, a large number of parameters to be varied, and a wide variety of error analyses to be performed.

A. Helgesson

1979-01-01

127

An Experimental CMI System on the PDP 11/20.  

ERIC Educational Resources Information Center

A computer-managed instructional (CMI) system is being developed for use in investigating a CMI environment for Air Force technical training using the PDP 11/20 minicomputer. Software and hardware interfaces are now available for 24k core memory with an additional 128k random access disc storage. Hardware interfaces are complete for the student…

Espeland, L. Roger; Walker, Gerald S.

128

Mass Storage Systems.  

ERIC Educational Resources Information Center

Presents an overview of the mass storage market and discusses mass storage systems as part of computer networks. Systems for personal computers, workstations, minicomputers, and mainframe computers are described; file servers are explained; system integration issues are raised; and future possibilities are suggested. (LRW)

Ranade, Sanjay; Schraeder, Jeff

1991-01-01

129

A Simple Computer-Television Interface System for Gait Analysis  

Microsoft Academic Search

A new method for analysis and recording of gait parameters is reported. This method consists of a television camera interfaced with a PDP-11\\/10 minicomputer. The TV camera picks up anatomical points of interest such as knee joint, ankle joint, etc., to which small lights are attached and the computer calculates their coordinates and joint angles as a function of time.

In-Sheng Cheng; S. H. Koozekanani; M. T. Fatehi

1975-01-01

130

Integrated Online Software for Libraries: An Overview of Today's Best-Selling IOLS. Options from the U.S. Perspective.  

ERIC Educational Resources Information Center

Profiles the top-selling IOLS (integrated online library systems) software for libraries based on sales figures reported in the 1996 "Library Journal" annual survey of the library automation marketplace. Highlights include microcomputer-based systems and minicomputer-based systems, system components, MARC formats, and market sectors. (Author/LRW)

Cibbarelli, Pamela

1996-01-01

131

Expansion of the Eclipse Digital Signal Processing System.  

National Technical Information Service (NTIS)

A signal processing software package was generated for a Data General Eclipse S/250 minicomputer. The model 4331 A/D/A converter was utilized to perform general purpose A/D/A operations and to collect, edit, and play back speech data files. The model 130 ...

G. R. Allen

1982-01-01

132

FBOS - Foreground/Background Operating System.  

National Technical Information Service (NTIS)

A batch operating system is converted to a Foreground/Background Operating System (FBOS) for use on a Varian 620/f Minicomputer system. Entry to port no. 1 (the foreground) is via an interrupt generating graphics console facilitating user interaction with...

D. J. Turner

1974-01-01

133

CEBAF control system  

NASA Astrophysics Data System (ADS)

A logic-based computer control system is in development at the Continuous Electron Beam Accelerator Facility (CEBAF). This Unix/C language software package, running on a distributed, hierarchical system of workstation and supervisory minicomputers, interfaces to hardware via Computer Automated Measurement and Control (CAMAC). Software aspects covered are ladder logic, interactive database generation, networking, and graphic user interfaces.

Bork, Rolf; Grubb, Caroline; Lahti, George; Navarro, Edwin; Sage, Joan; Moore, T.

134

CEBAF control system  

Microsoft Academic Search

A logic-based computer control system is in development at the Continuous Electron Beam Accelerator Facility (CEBAF). This Unix\\/C language software package, running on a distributed, hierarchical system of workstation and supervisory minicomputers, interfaces to hardware via Computer Automated Measurement and Control (CAMAC). Software aspects covered are ladder logic, interactive database generation, networking, and graphic user interfaces.

Rolf Bork; Caroline Grubb; George Lahti; Edwin Navarro; Joan Sage; T. Moore

1989-01-01

135

CEBAF Control System  

Microsoft Academic Search

A logic-based computer control system is in development at CEBAF. This Unix\\/C language software package, running on a distributed, hierarchical system of workstation and supervisory minicomputers, interfaces to hardware via CAMAC. Software aspects to be covered are ladder logic, interactive database generation, networking, and graphic user interfaces.

Rolf Bork; George Lahti; Edwin Navarro; Caroline Grubb; Joan Sage; T. Moore

1988-01-01

136

Developing Custom Software and Merging with an Existing Retrieval System: A Case Study.  

ERIC Educational Resources Information Center

Describes process by which two operational components of National Epilepsy Library and Resource Center (reference library, information and referral unit) combined existing retrieval package with specially designed software to make optimum use of a Wang VS-80 minicomputer. Designing and programing the system, testing and evaluation, and final…

Schockley, Cynthia W.; Hinds, Timothy H.

1984-01-01

137

A Guide to Using the Bibliographic Features of the Integrated Library System (ILS).  

ERIC Educational Resources Information Center

This manual provides guidance in the use of the Integrated Library System (ILS), a library minicomputer system in which all automated library functions are processed against a single database. It is oriented toward ILS users with no ADP training or experience. Written in MUMPS, a higher-level language, the system includes the following…

King, Susan G.

138

Operating manual for the RRL 8 channel data logger  

NASA Technical Reports Server (NTRS)

A data collection device which takes measurements from external sensors at user specified time intervals is described. Three sensor ports are dedicated to temperature, air pressure, and dew point. Five general purpose sensor ports are provided. The user specifies when the measurements are recorded as well as when the information is read or stored in a minicomputer or a paper tape.

Paluch, E. J.; Shelton, J. D.; Gardner, C. S.

1979-01-01

139

Tubular heat exchanger design. Complement to the report MT 131  

Microsoft Academic Search

An interactive program for a minicomputer which calculates the thermal performance of shell and tube heat exchangers was written. The algorithms used and program data flow are described. Heat transfer and pressure drop correlations were assembled from the literature to aid in limiting the overdimensioning of heat exchangers. The user can solve design problems by updating geometrical input parametes until

F. Vandeberghe

1980-01-01

140

Digital Image Processing of Electron Micrographs: The PIC System-III  

Microsoft Academic Search

The PIC system is an integrated package of image processing software written in Fortran and C. Throughout its 16 years of continuous development, PIC has been designed for the processing of electron micrographs with emphasis on the particular requirements for structural analysis of biological macromolecules. PIC has been implemented on successive generations of Digital Equipment Corporation dedicated minicomputers and workstations.

Eva Kocsis; James F. Conway; Alasdair C. Steven

1996-01-01

141

Fast Data Transfer System between PDP11/10 and SM-4 Computers.  

National Technical Information Service (NTIS)

A fast data transfer up to 250 Kbytes/sec is described. The system allows fast data transfer between PDP11/10 minicomputer, which works as a CADOS (a data acquisition system) control unit, and SM-4 (PDP11/40 compatible) in any direction. The data transfer...

W. Kantor

1985-01-01

142

Mobile Computer-Assisted-Instruction in Rural New Mexico.  

ERIC Educational Resources Information Center

The University of New Mexico's three-year Computer Assisted Instruction Project established one mobile and five permanent laboratories offering remedial and vocational instruction in winter, 1984-85. Each laboratory has a Degem learning system with minicomputer, teacher terminal, and 32 student terminals. A Digital PDP-11 host computer runs the…

Gittinger, Jack D., Jr.

143

Michigan State University-Rockford Two-Way Cable Project. System Design, Application Experiments and Public Policy Issues. Final Report, Volume II.  

ERIC Educational Resources Information Center

This 4-year project located in Rockford, Illinois, tested the minicomputer-controlled interactive instruction by two-way cable against more traditional learning situations during a 12-lesson course in prefire planning administered to the city's fire department. This volume describing the development and implementation of the cable television…

Baldwin, Thomas F.; And Others

144

Modifications to the TRIM Monte Carlo simulation program  

Microsoft Academic Search

Extensive modifications were made to the TRIM (TRansport of Ions in Matter) Monte Carlo computer code which simulates the ion irradiation of amorphous solids. The original FORTRAN code was translated into BASIC for use on minicomputers with 32 K words of memory. Versions have been written to simulate very low-energy irradiations and the irradiation of binary alloys. Furthermore, a version

Macrander

1979-01-01

145

Hyperbaric Physiology Research Support.  

National Technical Information Service (NTIS)

This report describes advances made in the development of physiological monitoring and analysis systems for use in hyperbaric research. The systems, designed around a mini-computer configuration, are able to monitor up to 16 channels of analog data from r...

W. H. Mints A. Pomerance

1975-01-01

146

Microcomputer Page Layout (MicroPLA) Routine for Text-Graphic Materials: User's Guide. Technical Report 162.  

ERIC Educational Resources Information Center

Based on an earlier user's guide to a minicomputer page layout system called PLA (Terrell, 1982), this guide is designed for use in the development and production of text-graphic materials for training relatively unskilled technicians to perform complex procedures. A microcomputer version of PLA, MicroPLA uses the Commodore 8032 microcomputer to…

Galyon, Rosalind; And Others

147

A practical Hadamard transform spectrometer for astronomical application  

NASA Technical Reports Server (NTRS)

The mathematical properties of Hadamard matrices and their application to spectroscopy are discussed. A comparison is made between Fourier and Hadamard transform encoding in spectrometry. The spectrometer is described and its laboratory performance evaluated. The algorithm and programming of inverse transform are given. A minicomputer is used to recover the spectrum.

Tai, M. H.

1977-01-01

148

Field implementation of an emergency assessment system  

Microsoft Academic Search

A computerized Emergency Assessment and Response System (EARS) was developed as a means to characterize and evaluate the offsite radiological consequences of potential accidents at the Diablo Canyon Power Plant (DCPP). The system consists of a central computer at the Technical Support Center, provisions for live-time collection of meteorological and monitor data, and a distributed network of minicomputer display stations

David M. Walker; Robert A. Hearn; Martin W. Mak; D. P. Serpa; C. C. Shih

1983-01-01

149

The ILS--The Pentagon Library's Experience.  

ERIC Educational Resources Information Center

Describes implementation of five subsystems of Integrated Library System's (ILS) version 2.1 (minicomputer-based automated library system) at the Pentagon Library: online catalog (search strategies, user acceptance); bibliographic subsystems (cataloging, retrospective conversion); circulation; serials check-in; administrative subsystem (report…

Mullane, Ruth

1984-01-01

150

He Particle Characterization for Quality Control. Final Report.  

National Technical Information Service (NTIS)

A minicomputer permits rapid determination of the average cross-sectional area and the average projected length of particles in the field of view of the microscope. The analysis was performed on lots of production grade PETN. The computer has several adva...

R. C. Giberson

1974-01-01

151

Fossil-fuel power plants: Computer systems for power plant control, maintenance, and operation. October 1976-December 1989 (A Bibliography from the COMPENDEX data base). Report for October 1976-December 1989  

SciTech Connect

This bibliography contains citations concerning fossil-fuel power plant computer systems. Minicomputer and microcomputer systems used for monitoring, process control, performance calculations, alarming, and administrative applications are discussed. Topics emphasize power plant control, maintenance and operation. (Contains 240 citations fully indexed and including a title list.)

Not Available

1990-02-01

152

Electron beam induced current technique using a scanning Auger microprobe  

Microsoft Academic Search

A scanning Auger microprobe (SAM) has been modified to detect and process electron beam induced currents (EBIC). The EBIC mode is incorporated as an integral part of the analytical instrument and operates in conjunction with secondary electron detection (SED) and Auger electron spectroscopy (AES) modes. A minicomputer scans the electron beam and acquires the EBIC data. Using the built-in software

T. V. Rao; V. Dutta; O. S. Sastry; K. L. Chopra

1984-01-01

153

EEG Cartography of a Night of Sleep and Dreams  

Microsoft Academic Search

A night of sleep has been recorded under the conditions of a sleep laboratory. The subject was a woman of 55 years, well-trained in dream recall. The subject was awakened three times at the end of sleep cycles. EEG was monitored for 7 h with a 16-channel polygraph (REEGA 16, Alvar) connected to two systems of EEG cartography: minicomputers (HP

P. Etevenon; S. Guillou

1986-01-01

154

Techniques for digital enhancement of Landsat MSS data using an Apple II+ microcomputer  

NASA Technical Reports Server (NTRS)

The information provided by remotely sensed data collected from orbiting platforms has been useful in many research fields. Particularly convenient for evaluation are generally digital data stored on computer compatible tapes (CCT's). The major advantages of CCT's are the quality of the data and the accessibility to computer manipulation. Minicomputer systems are widely used for the required computer processing operations. However, microprocessor-related technological advances make it now possible to process CCT data with computing systems which can be obtained at a much lower price than minicomputer systems. A detailed description is provided of the design considerations of a microcomputer-based Digital Image Analysis System (DIAS). Particular attention is given to the algorithms which are incorporated for eighter edge enhancement or smoothing Landsat multispectral scanner data.

Harrington, J. A., Jr.; Cartin, K. F.

1984-01-01

155

The Argument for Modular Distributed Hospital Information Systems (HIS)  

PubMed Central

The idealized HIS would have several characteristics. It would be flexible, allowing the hospital to tailor the system to its particular needs; evolutionary - not revolutionary - allowing considered gradual implementation and change as technology develops and the needs of the hospital evolve; integrated, allowing the various clinical, financial, and administrative functions to intercommunicate; modular giving individual functional areas autonomy and responsiblity for their own systems; “off-the-shelf”, not requiring extensive in-house development or modification; reliable; and financially untaxing. Both approaches using integrated mainframe systems and approaches using isolated modular minicomputers fail to realize this ideal in several categories. However, the technology is now available to allow local networking of dedicated minicomputer-based, commercially available, functional modules with varying hardware and software configurations into integrated systems which would satisfy many of the idealized requirements.

Whiting-O'Keefe, Quinn E.; Simborg, Donald W.; Tolchin, Steve

1981-01-01

156

Impact of some architectural features of the implementation of a concurrent pascal machine  

SciTech Connect

The concurrent pascal machine (CPM), which is a virtual machine designed to support concurrent processes, was implemented on an 8-bit microcomputer as the beginning step toward constructing a fault-tolerant microcomputer network. The CPM architecture, whose first implementation was based on a PDP 11/45 minicomputer, reflects considerable influence of the PDP 11/45 architecture. The architectural differences between the 16-bit minicomputer and the 8-bit microcomputer which have significant impact on the difficulty of implementing CPMs are analyzed. Then some details on the implementation of the 16-bit virtual machine (CPM) on the 8-bit microcomuter are presented along with some approaches for tuning the CPM architecture to yield more efficient implementations on microcomputers. 7 references.

Kim, K.H.; Abou-el-naga, A.

1982-01-01

157

EEG data acquisition and preprocessing by microcomputer satellite system.  

PubMed

Recent development in computer technology allows already medium scale EEG data processing to be performed within the clinical neurophysiology department, if a fast minicomputer with adequate mass storage and graphical output facilities is used. Data acquisition, however, should be delegated to a microcomputer which also should take over as much preprocessing as possible. A system is presented, where one or several microcomputer-based satellite units perform analog-digital conversion, Fourier transformation (FFT), calculation of power spectra and crossproducts, as well as event related averaging or other preprocessing procedures. The units are connected to a fast central minicomputer, where a supervisor program loads the microprocessors with their programs, supervises their activity, receives preprocessed data and activates appropriate postprocessing programs to produce the final results. PMID:527323

Dumermuth, G; Dinkelmann, R

1979-12-01

158

An interactive computer system for emergency response and planning  

SciTech Connect

An interactive computer system for meteorological data acquisition and environmental impact modeling has been developed for emergency response and planning applications by the Pacific Northwest Laboratory. The system uses a minicomputer to acquire meteorological data from automated monitoring sites, conduct data processing, and archive data. Personal computer (PC) workstations are used to retrieve archived data from the minicomputer, generate displays of meteorological data, model the atmospheric dispersion and deposition of potential atmospheric releases, and produce high-resolution, color graphics to display model output. User-friendly menus and forms make the system easy to use and the single-user environment on the PC workstation allows for fast and consistent model performance. 3 refs., 5 figs.

Glantz, C.S.; Skyllingstad, E.D.; Ramsdell, J.V.; Andrews, G.L.; McCormack, W.D.

1989-01-01

159

Two dimensional recursive digital filters for near real time image processing  

NASA Technical Reports Server (NTRS)

A program was designed toward the demonstration of the feasibility of using two dimensional recursive digital filters for subjective image processing applications that require rapid turn around. The concept of the use of a dedicated minicomputer for the processor for this application was demonstrated. The minicomputer used was the HP1000 series E with a RTE 2 disc operating system and 32K words of memory. A Grinnel 256 x 512 x 8 bit display system was used to display the images. Sample images were provided by NASA Goddard on a 800 BPI, 9 track tape. Four 512 x 512 images representing 4 spectral regions of the same scene were provided. These images were filtered with enhancement filters developed during this effort.

Olson, D.; Sherrod, E.

1980-01-01

160

Digital image processing on a small computer system  

NASA Technical Reports Server (NTRS)

A minicomputer-based image processing facility provides a relatively low-cost entry point for education about image analysis applications in remote sensing. While a minicomputer has sufficient processing power to produce results quite rapidly for low volumes of small images, it does not have sufficient power to perform CPU- or 1/0-bound tasks on large images. A system equipped with a display terminal is ideally suited for interactive tasks. Software procurement is a limiting factor for most end users, and software availability may well be the overriding consideration in selecting a particular hardware configuration. The hardware chosen should be selected to be compatible with the software and with concern for future expansion.

Danielson, R.

1981-01-01

161

Display-management system for MFTF  

SciTech Connect

The Mirror Fusion Test Facility (MFTF) is controlled by 65 local control microcomputers which are supervised by a local network of nine 32-bit minicomputers. Associated with seven of the nine computers are state-of-the-art graphics devices, each with extensive local processing capability. These devices provide the means for an operator to interact with the control software running on the minicomputers. It is critical that the information the operator views accurately reflects the current state of the experiment. This information is integrated into dynamically changing pictures called displays. The primary organizational component of the display system is the software-addressable segment. The segments created by the display creation software are managed by display managers associated with each graphics device. Each display manager uses sophisticated storage management mechanisms to keep the proper segments resident in the local graphics device storage.

Nelson, D.O.

1981-01-01

162

INS real-time data processing composite system using large scale general purpose computers  

NASA Astrophysics Data System (ADS)

Quick response real-time facilities, with an overhead time of 18.3 ms, using a general purpose large scale computer, FACOM M-180IIAD (2.5 MIPS), and channel coupled terminal minicomputers, PANAFACOM U-400, have been developed and are in operation at INS Tokyo. The system is useful for computer aided real-time data acquisition and processing for experimental nuclear and elementary particle physics. Another batch processing system for the same type of large scale computer is connected with a real-time machine. Sophisticated analysis of experimental data as well as pure theoretical problems and design studies can be performed by this system. The system is also capable of backing up minicomputer terminals through a modem for the computer control of accelerators and beam diagnostics.

Kokame, Jun; Takano, Motonobu; Oshikubo, Tomoko; Chiba, Kurazo; Ukai, Kumataro; Imanishi, Akira; Yasue, Masaharu; Omata, Kazuo; Watanabe, Shin-Ichi; Hirai, Hiroaki; Ogawa, Masami; Ishida, Norio; Kamakura, Kunio; Fujita, Masaya; Koba, Kazusuke

1983-08-01

163

Electromechanical three-axis development for remote handling in the Hot Experimental Facility  

SciTech Connect

A three-axis closed-loop position control system has been designed and installed on an overhead bridge, carriage, tube hoist for automotive positioning of manipulation at a remotely maintained work site. The system provides accurate (within 3 min) and repeatable three-axis positioning of the manipulator. The position control system has been interfaced to a supervisory minicomputer system that provides teach-playback capability of manipulator positioning and color graphic display of the three-axis system position.

Garin, J.; Bolfing, B.J.; Satterlee, P.E.; Babcock, S.M.

1981-01-01

164

Developing a Computerized Medical Coding System for an Ambulatory Care Facility  

PubMed Central

With a phenominal growth in the number of group practice and ambulatory health facilities along with an increased availability and decreased cost of mini-computers, the need for a diagnostic coding system oriented toward ambulatory care has become more apparent. We will point out problems we have encountered with the widely accepted International Classification of Disease, 9th Revision, coding system, and what we have done to adapt this system to the needs of a high volume ambulatory care facility.

Laviola, Maureen; Jacobson, Catherine

1981-01-01

165

Microfiche as a medium for the long-term storage of laboratory computer records.  

PubMed

The chemical pathology requests on 180 000 patients a year are stored on microfiche, occupying 72 mm of shelf space. They are produced by a sequence of three computer programs which remove data from disc on to magnetic tape using the laboratory's Digital Equipment Corporation PDP 11/34 minicomputer. Processing on to microfiche is performed by a bureau. The magnetic tape is available for retrospective research and management studies in one-month periods. PMID:7462438

McVittie, J D; Whitehouse, C; Wilkinson, R H

1981-01-01

166

An evolution of an information technology architecture for oceanography  

Microsoft Academic Search

Historically, the Naval Oceanographic Office has employed numerous generations of Information Technology (IT) to satisfy its missions and has a history of application of IT from legacy mainframes to deployed mini-computers, networked enterprises, and clusters of super-computers. This paper traces the historical development of the Information Technology enterprise and architecture. Emphasis will be placed on the current application of standards-based

J. A. Lever; I. Moore; W. J. Moseley; R. J. Starek

2000-01-01

167

Debugging in a multi-processor environment  

SciTech Connect

The Supervisory Control and Diagnostic System (SCDS) for the Mirror Fusion Test Facility (MFTF) consists of nine 32-bit minicomputers arranged in a tightly coupled distributed computer system utilizing a share memory as the data exchange medium. Debugging of more than one program in the multi-processor environment is a difficult process. This paper describes what new tools were developed and how the testing of software is performed in the SCDS for the MFTF project.

Spann, J.M.

1981-09-29

168

TMS communications hardware. Volume 2: Bus interface unit  

NASA Technical Reports Server (NTRS)

A prototype coaxial cable bus communication system used in the Trend Monitoring System to interconnect intelligent graphics terminals to a host minicomputer is described. The terminals and host are connected to the bus through a microprocessor-based RF modem termed a Bus Interface Unit (BIU). The BIU hardware and the Carrier Sense Multiple Access Listen-While-Talk protocol used on the network are described.

Brown, J. S.; Hopkins, G. T.

1979-01-01

169

MOS2: an efficient MOnte Carlo Simulator for MOS devices  

Microsoft Academic Search

An efficient Monte Carlo device simulator has been developed as a postprocessor of a two-dimensional numerical analyzer based on the drift-diffusion model. The Monte Carlo package analyzes real VLSI MOSFETs in a minicomputer environment, overcoming some existing theoretical and practical problems. In particular, the particle free-flight time distribution is obtained by a new algorithm, leading to a CPU time saving

Enrico Sangiorgi; Bruno Riccò; Franco Venturi

1988-01-01

170

RIG, rochester\\  

Microsoft Academic Search

The RIG system provides convenient access to a wide range of computing facilities. The system includes five large mini-computers in a very fast internal network, disk and tape storage, a printer\\/plotter, and a number of display terminals. These are connected to larger campus machines (IBM 360\\/65 and DEC KL10) and to the ARPANET. The operating system and other software support

E. Ball; Jerome A. Feldman; James R. Low; Richard F. Rashid; Paul Rovner

1976-01-01

171

SIFT: Design and analysis of a fault-tolerant computer for aircraft control  

Microsoft Academic Search

SIFT (Software Implemented Fault Tolerance) is an ultrareliable computer for critical aircraft control applications that achieves fault tolerance by the replication of tasks among processing units. The main processing units are off-the-shelf minicomputers, with standard microcomputers serving as the interface to the I\\/O system. Fault isolation is achieved by using a specially designed redundant bus system to interconnect the proeessing

John H. Wensley; L. Lamport; J. Goldberg; M. W. Green; K. N. Levitt; P. M. Melliar-Smith; R. E. Shostak; C. B. Weinstock

1978-01-01

172

CODAS: The JET control and data acquisition system  

SciTech Connect

The hardware and software structure of the control and data acquisition system (CODAS) of the Joint European Torus is described. CODAS is a large distributed real-time process control system. The operation is centralized in two adjacent control rooms through a fully programmable man-machine interface. The plant interface is based on CAMAC instrumentation and Eurocard signal conditioning. The system is based on a network of minicomputers with a link to a host mainframe.

Van der Beken, H.; Best, C.H.; Fullard, K.; Herzog, R.F.; Jones, E.M.; Stead, C.A.

1987-01-01

173

LTX - a system for the directed automatic design of LSI circuits  

Microsoft Academic Search

LTX is a minicomputer-based design system for large-scale integrated circuit chip layout which offers a flexible set of interactive and automatic procedures for translating a circuit connectivity description into a finished mask design. The system encompasses algorithms for two-dimensional placement, string placement, exploitation of equivalent terminals, decomposition of routing into channels, and channel routing. Circuit connectivity is preserved during interactive

G. Persky; D. N. Deutsch; D. G. Schweikert

1976-01-01

174

Quantitative analysis of defects in silicon. Silicon sheet growth development for the large are silicon sheet task of the low-cost solar array project  

Microsoft Academic Search

One hundred and seventy four silicon sheet samples were analyzed for twin boundary density, dislocation pit density, and grain boundary length. Procedures were developed for the quantitative analysis of the twin boundary and dislocation pit densities using a QTM-720 Quantitative Image Analyzing system. The QTM-720 system was upgraded with the addition of a PDP 11\\/03 mini-computer with dual floppy disc

R. Natesh; J. M. Smith; T. Bruce; H. A. Oidwai

1980-01-01

175

Using a personal computer for cellular enginerring  

Microsoft Academic Search

Software tools for engineering cellular systems have always been in the domain of mainframe or large minicomputers. The introduction of fast micro-computers-personal computers (PCs)-makes it possible to engineer small to medium sized cellular systems without the high costs associated with large computers. Signal prediction and coverage, interference analysis, and system growth analysis are examples of applications that can be done

L. Sakayama

1985-01-01

176

Pricetown I - In-situ coal conversion field test for bituminous coals  

NASA Astrophysics Data System (ADS)

The effectiveness of the in situ, underground Linked Vertical Well method of bituminous coal gasification was investigated by a field test in West Virginia. The test, involving air injection and reverse combustion linkage, was continuously monitored in real time by a minicomputer system. The high methane content of the evolved gas is attributed to the thermal- and hydro-cracking of tars and oils along with hydropyrolysis and hydrogasification of coal char.

Zielinski, R. E.; Seabaugh, P. W.; Agarwal, A. K.; Larson, R. J.; Liberatore, A. J.; Martin, J. W.; McClung, J. D.

177

A new theory for rapid calculation of the ground pattern of the incident sound intensity produced by a maneuvering jet airplane  

NASA Technical Reports Server (NTRS)

An approximate method for computing the jet noise pattern of a maneuvering airplane is described. The method permits one to relate the noise pattern individually to the influences of airplane speed and acceleration, jet velocity and acceleration, and the flight path curvature. The analytic formulation determines the ground pattern directly without interpolation and runs rapidly on a minicomputer. Calculated examples including a climbing turn and a simple climb pattern with a gradual throttling back are presented.

Barger, R. L.

1980-01-01

178

The application of microprocessors to strapdown inertial navigation  

NASA Technical Reports Server (NTRS)

The fundamental concepts of inertial navigation are briefly examined. In a strapdown inertial navigator the accelerometers and gyros are mounted directly on the vehicle frame. The development of strapdown systems, which have important advantages over gimbal systems, has been mainly retarded by the computational requirements involved. However, the current availability of suitable minicomputers combined with other technological advances has now opened the way for a more widespread use of strapdown inertial navigators.

Napjus, G. A.

1974-01-01

179

Kinetic and morphometric measurements of enzyme reactions in tissue sections with a new instrumental setup  

Microsoft Academic Search

An instrumental setup is described for the measurement of enzyme kinetics and morphometry in tissue sections. It consists of a Vickers M85 microdensitometer and computer-assisted Kontron Videoplan system. The Videoplan system consists of a minicomputer with two mini-floppy disks, a keyboard, a graphic tablet, a TV monitor and a printer\\/plotter. The measuring component of the M85 is linked to the

P. Kugler

1981-01-01

180

C.mmp: a multi-mini-processor  

Microsoft Academic Search

In the Summer of 1971 a project was initiated at CMU to design the hardware and software for a multi-processor computer system using minicomputer processors (i.e., PDP-11's). This paper briefly describes an overview (only) of the goals, design, and status of this hardware\\/software complex, and indicates some of the research problems raised and analytic problems solved in the course of

William A. Wulf; C. G. C. Bell

1972-01-01

181

An interactive system for semi-automatic artwork generation of printed circuit boards  

Microsoft Academic Search

An integrated interactive system for the P.C. boards production is described. The system comprises a minicomputer, a teletype, a paper tape puncher and reader and a package of analysis, control and post-processing programs.The input data to the system consist of circuit schematics, coded in terms of electrical components and connections, and manual layouts of the P.C.B.'s. Both inputs are internally

A. Mura; M. Tomljanovich

1973-01-01

182

Study of software application of airborne laser doppler system for severe storms measurement  

NASA Technical Reports Server (NTRS)

Significant considerations are described for performing a Severe Storms Measurement program in real time. Particular emphasis is placed on the sizing and timing requirements for a minicomputer-based system. Analyses of several factors which could impact the effectiveness of the system are presented. The analyses encompass the problems of data acquisition, data storage, data registration, correlation, and flow field computation, and error induced by aircraft motion, moment estimation, and pulse integration.

Alley, P. L.

1979-01-01

183

Applications of a signal averager for neurophysiological investigations in clinical function laboratories using a general signal-processing unit.  

PubMed

A general 'coherent signal averager' software package which can be run on a small laboratory computer is presented as an application of a new approach to medical instrumentation. The combination of the minicomputer, preprocessing hardware and the above-mentioned software yields a flexible multipurpose averaging system for electrophysiological signals. The possibilities of the system are discussed with reference to visual evoked potential measurements in a clinical function laboratory. PMID:6689522

van den Akker, T J; Ros, H H; Koeleman, A S; Saat, R G

1983-12-01

184

Dedicated multiprocessor system for calculating Josephson-junction noise thermometer frequency variances at high speed  

SciTech Connect

A Josephson-junction noise thermometer produces a sequence of frequency readings from whose variations the temperature of the thermometer may be calculated. A preprocessor system has been constructed to collect the frequency readings delivered to an IEEE 488 bus by an ordinary counter operating at up to 1000 readings per second, perform the required calculations, and send summary information to a desk calculator or minicomputer on another 488 bus at a more convenient rate.

Cutkosky, R.D.

1983-07-01

185

A scanning laser rangefinder for a robotic vehicle  

NASA Technical Reports Server (NTRS)

A scanning Laser Rangefinder (LRF) which operates in conjunction with a minicomputer as part of a robotic vehicle is described. The description, in sufficient detail for replication, modification, and maintenance, includes both hardware and software. Also included is a discussion of functional requirements relative to a detailing of the instrument and its performance, a summary of the robot system in which the LRF functions, the software organization, interfaces and description, and the applications to which the LRF has been put.

Lewis, R. A.; Johnston, A. R.

1977-01-01

186

An implementation of the distributed programming structural synthesis system (PROSSS)  

NASA Technical Reports Server (NTRS)

A method is described for implementing a flexible software system that combines large, complex programs with small, user-supplied, problem-dependent programs and that distributes their execution between a mainframe and a minicomputer. The Programming Structural Synthesis System (PROSSS) was the specific software system considered. The results of such distributed implementation are flexibility of the optimization procedure organization and versatility of the formulation of constraints and design variables.

Rogers, J. L., Jr.

1981-01-01

187

FTIR (Fourier transform infrared) spectrophotometry for thin film monitors: Computer and equipment integration for enhanced capabilities  

SciTech Connect

Fourier transform infrared spectrophotometry (FTIR) is a valuable technique for monitoring thin films used in semiconductor device manufacture. Determinations of the constituent contents in borophosphosilicate (BPSG), phosphosilicate (PSG), silicon oxynitride (SiON:H,OH), and spin-on-glass (SOG) thin films are a few applications. Due to the nature of the technique, FTIR instrumentation is one of the most extensively computer-dependent pieces of equipment that is likely to be found in a microelectronics plant. In the role of fab monitor or reactor characterization tool, FTIR instruments can rapidly generate large amounts of data. By linking a local FTIR data station to a remote minicomputer its capabilities are greatly improved. We discuss three caused of enhancement. First, the FTIR in the fab area communicates and interacts in real time with the minicomputer: transferring data segments to it, instructing it to perform sophisticated processing, and returning the result to the operator in the fab. Characterizations of PSG thin films by this approach are discussed. Second, the spectra of large numbers of samples are processed locally. The large database is then transmitted to the minicomputer for study by statistical/graphics software. Results of CVD-reactor spatial profiling experiments for plasma SiON are presented. Third, processing of calibration spectra is performed on the minicomputer to optimize the accuracy and precision of a Partial Least Squares'' analysis mode. This model is then transferred to the data station in the fab. The analysis of BPSG thin films is discussed in this regard. The prospects for fully automated at-line monitoring and for real-time, in-situ monitoring will be discussed. 10 refs., 4 figs.

Cox, J.N.; Sedayao, J.; Shergill, G.; Villasol, R. (Intel Corp., Santa Clara, CA (USA)); Haaland, D.M. (Sandia National Labs., Albuquerque, NM (USA))

1990-01-01

188

Small laboratory computer automation system based on Hewlett-Packard HP1000 mini computer and IEEE488 standard  

Microsoft Academic Search

A system for automatic acquisition and handling of experimental data based on the Hewlett-Packard HP-1000 minicomputer and IEEE-488 standard is described. Digital measuring equipment is coupled with the computer through the Hewlett-Packard Interface Bus (HP-IB). The special IPP interface is developed to connect to the computer the devices which are noncompatible with HP-IB. Two types of IPP interface are described

V. I. Kirillov; E. L. Kosarev; L. B. Luganskii; A. M. Schastlivtzev

1982-01-01

189

Analysis of non-stationary signals--Digital filters vs. FFT  

Microsoft Academic Search

Meaningful analysis of non-stationary signals such as speech, is normally implemented on mini-computers coupled to array processors. In contrast, this paper describes the use of dedicated, self-contained instruments for the simpler forms of analysis. A real-time, 1\\/3 octave digital filter bank coupled to an RMS detector with time constants down to 1\\/32 s is described as well as a unique

C. Thomsen; Jens Hee

1981-01-01

190

Geometric assessment of image quality using digital image registration techniques  

NASA Technical Reports Server (NTRS)

Image registration techniques were developed to perform a geometric quality assessment of multispectral and multitemporal image pairs. Based upon LANDSAT tapes, accuracies to a small fraction of a pixel were demonstrated. Because it is insensitive to the choice of registration areas, the technique is well suited to performance in an automatic system. It may be implemented at megapixel-per-second rates using a commercial minicomputer in combination with a special purpose digital preprocessor.

Tisdale, G. E.

1976-01-01

191

Simple digital pulse-programing circuit  

NASA Technical Reports Server (NTRS)

Pulse-sequencing circuit uses only shift register and Exclusive-OR gates. Circuit also serves as date-transition edge detector (for rising or falling edges). It is used in sample-and-hold, analog-to-digital conversion sequence control, multiphase clock logic, precise delay control computer control logic, edge detectors, other timing applications, and provides simple means to generate timing and control signals for data transfer, addressing, or mode control in microprocessors and minicomputers.

Langston, J. L.

1979-01-01

192

PC-Link historical data base system MODCOMP\\/IBM at link for neutral particle beam operation  

Microsoft Academic Search

PC-Link is a combination of hardware and software that connects an IBM PC\\/AT to a MODCOMP minicomputer. It is designed as an aid to the neutral beam operations coordinator during injection into the DIII-D tokamak project. An IBM PC\\/AT is linked to four MODCOMP real-time acquisition systems, each of which controls two neutral particle-beam sources. At various points in the

P. Thurgood

1989-01-01

193

A modern PC-based sidescan sonar acquisition and display system  

Microsoft Academic Search

As part of a University of Rhode Island Ocean Technology program promoting university\\/industry cooperation, graduate students in ocean engineering undertook the preliminary design and implementation of an inexpensive data collection and real-time mosaicing system for use with dual frequency side-scan sonar tow fish. Objectives for the design included replacing high-cost deck units and mini-computer acquisition systems with a receiver integrated

D. L. Clapp

1993-01-01

194

USING SMART TECHNOLOGIES TO REVITALIZE DEMAND RESPONSIVE TRANSIT  

Microsoft Academic Search

Demand responsive transit, the first “smart” public transportation service, was an ambitious attempt to use “breakthrough” technologies of the early 1970s—the minicomputer and 3GL computer languages—to develop a new form of public transit. However, as experience was gained with Dial-A-Ride, it became apparent that the automated features of this transit service were not cost-effective for most systems given the technologies

Roger F. Teal

1994-01-01

195

FTIR (Fourier Transform Infrared) spectrophotometry for thin film monitors: Computer and equipment integration for enhanced capabilities  

NASA Astrophysics Data System (ADS)

Fourier transform infrared spectrophotometry (FTIR) is a valuable technique for monitoring thin films used in semiconductor device manufacture. Determinations of the constituent contents in borophosphosilicate (BPSG), phosphosilicate (PSG), silicon oxynitride (SiON:H,OH), and spin-on-glass (SOG) thin films are a few applications. Due to the nature of the technique, FTIR instrumentation is one of the most extensively computer-dependent pieces of equipment that is likely to be found in a microelectronics plant. In the role of fab monitor or reactor characterization tool, FTIR instruments can rapidly generate large amounts of data. By linking a local FTIR data station to a remote minicomputer its capabilities are greatly improved. We discuss three caused of enhancement. First, the FTIR in the fab area communicates and interacts in real time with the minicomputer: transferring data segments to it, instructing it to perform sophisticated processing, and returning the result to the operator in the fab. Characterizations of PSG thin films by this approach are discussed. Second, the spectra of large numbers of samples are processed locally. The large database is then transmitted to the minicomputer for study by statistical/graphics software. Results of CVD-reactor spatial profiling experiments for plasma SiON are presented. Third, processing of calibration spectra is performed on the minicomputer to optimize the accuracy and precision of a Partial Least Squares analysis mode. This model is then transferred to the data station in the fab. The analysis of BPSG thin films is discussed in this regard. The prospects for fully automated at-line monitoring and for real-time, in-situ monitoring will be discussed.

Cox, J. N.; Sedayao, J.; Shergill, G.; Villasol, R.; Haaland, D. M.

196

Interface for Biomation transient recorders to LSI11 processors  

Microsoft Academic Search

An interface is described which permits high-speed wordwise data transfer between a Biomation 820 Transient Recorder and a MINC (LSI-11\\/2) minicomputer. Using a DRV11-B direct-memory access card, up to 50 full 2 K records\\/s can be transferred to the MINC system; single word control data can also be passed from the computer to the Transient Recorder.

Christopher Reiser

1980-01-01

197

Clinical percutaneous imaging of coronary anatomy using an over-the-wire ultrasound catheter system  

Microsoft Academic Search

This manuscript describes initial applications of a unique new intravascular ultrasound imaging catheter. This 5.5F catheter uses an over-the-wire design and incorporates a phased array transducer at its tip. There are no moving parts. A 360° image is produced perpendicular to the catheter axis using a 20 MHz center frequency. A dedicated minicomputer is used for initial image processing, as

J. B. Hodgson; S. P. Graham; A. D. Savakus; S. G. Dame; D. N. Stephens; P. S. Dhillon; D. Brands; H. Sheehan; M. J. Eberle

1989-01-01

198

Microcomputer-based digital image processing - A tutorial package for exploration geologists  

NASA Technical Reports Server (NTRS)

An Apple II microcomputer-based software package for analysis of digital data developed at the University of Oklahoma, the Digital Image Analysis System (DIAS), provides a relatively low-cost, portable alternative to large, dedicated minicomputers for digital image processing education. Digital processing techniques for analysis of Landsat MSS data and a series of tutorial exercises for exploration geologists are described and evaluated. DIAS allows in-house training that does not interfere with computer-based prospect analysis objectives.

Harrington, J. A., Jr.; Cartin, K. F.

1985-01-01

199

On-Iine Management System for the Periodicals in JAERl  

NASA Astrophysics Data System (ADS)

The article describes the outlines of the on-line serials control system utilizing a mini-computer. The system is dealt with subscription, check-in, claiming, inquiry of serials information and binding of journals. In this system journal acquisition with serial arrival prediction in an on-line mode is carried on a priority principle to record the actual receipt of incoming issues.

Itabashi, Keizo; Mineo, Yukinobu

200

Thermal battery statistics and plotting programs  

NASA Astrophysics Data System (ADS)

Thermal battery functional test data are stored in an HP3000 minicomputer operated by the Power Sources Department. A program was written to read data from a battery data base, compute simple statistics (mean, minimum, maximum, standard deviation, and K-factor), print out the results, and store the data in a file for subsequent plotting. A separate program was written to plot the data. The programs were written in the Pascal programming language.

Scharrer, G. L.

1990-04-01

201

Touch-sensitive colour graphics enhance monitoring of loss-of-coolant accident tests  

Microsoft Academic Search

A stand-alone computer-based system with an intelligent colour termimal is described for monitoring parameters during loss-of-coolant accident tests. Colour graphic displays and touch-sensitive control have been combined for effective operator interaction. Data collected by the host MODCOMP II minicomputer are dynamically updated on colour pictures generated by the terminal. Experimenters select system functions by touching simulated switches on a transparent

M. D. Snedden; G. L. Mead

1982-01-01

202

Computer program modifications of Open-file report 82-1065; a comprehensive system for interpreting seismic-refraction and arrival-time data using interactive computer methods  

USGS Publications Warehouse

The computer programs published in Open-File Report 82-1065, A comprehensive system for interpreting seismic-refraction arrival-time data using interactive computer methods (Ackermann, Pankratz, and Dansereau, 1982), have been modified to run on a mini-computer. The new version uses approximately 1/10 of the memory of the initial version, is more efficient and gives the same results.

Ackermann, Hans D.; Pankratz, Leroy W.; Dansereau, Danny A.

1983-01-01

203

Experimental set-up for measurements of Compton scattering cross section on light nuclei  

NASA Astrophysics Data System (ADS)

The main units of an experimental set up for the study of the forward scattering of photons on light nuclei are described. The characteristics of the pair spectrometer, recoil-nuclei detector and the system of multichannel Cerenkov spectrometer combined with a wide gap spark chamber are presented. Operation of the set up is automated as much as possible by means of the CAMAC software operating on-line with the Electronika-100/25 minicomputer.

Aleksanyan, A. S.; Babayan, G. E.; Voskanyan, A. V.

204

Experience using the 168\\/E microprocessor for off-line data analysis  

Microsoft Academic Search

The 168\\/E is a SLAC developed microprocessor which emulates the IBM 360\\/370 computers with an execution speed of about one half of a IBM 370\\/168. These processors are used in parallel for the track finding and geometry programs of the LASS spectrometer. The system is controlled by a PDP-11 minicomputer via a three port interface which we call the Bermuda

P. F. Kunz; R. N. Fall; M. F. Gravina; J. H. Halperin; L. J. Levinson; G. J. Oxoby; Q. H. Trang

1979-01-01

205

libvaxdata: VAX data format conversion routines  

USGS Publications Warehouse

libvaxdata provides a collection of routines for converting numeric data-integer and floating-point-to and from the formats used on a Digital Equipment Corporation1 (DEC) VAX 32-bit minicomputer (Brunner, 1991). Since the VAX numeric data formats are inherited from those used on a DEC PDP-11 16-bit minicomputer, these routines can be used to convert PDP-11 data as well. VAX numeric data formats are also the default data formats used on DEC Alpha 64-bit minicomputers running OpenVMS The libvaxdata routines are callable from Fortran or C. They require that the caller use two's-complement format for integer data and IEEE 754 format (ANSI/IEEE, 1985) for floating-point data. They also require that the 'natural' size of a C int type (integer) is 32 bits. That is the case for most modern 32-bit and 64-bit computer systems. Nevertheless, you may wish to consult the Fortran or C compiler documentation on your system to be sure. Some Fortran compilers support conversion of VAX numeric data on-the-fly when reading or writing unformatted files, either as a compiler option or a run-time I/O option. This feature may be easier to use than the libvaxdata routines. Consult the Fortran compiler documentation on your system to determine if this alternative is available to you. 1Later Compaq Computer Corporation, now Hewlett-Packard Company

Baker, Lawrence M.

2005-01-01

206

Application of a personal computer for the uncoupled vibration analysis of wind turbine blade and counterweight assemblies  

NASA Technical Reports Server (NTRS)

A research effort was undertaken to develop personal computer based software for vibrational analysis. The software was developed to analytically determine the natural frequencies and mode shapes for the uncoupled lateral vibrations of the blade and counterweight assemblies used in a single bladed wind turbine. The uncoupled vibration analysis was performed in both the flapwise and chordwise directions for static rotor conditions. The effects of rotation on the uncoupled flapwise vibration of the blade and counterweight assemblies were evaluated for various rotor speeds up to 90 rpm. The theory, used in the vibration analysis codes, is based on a lumped mass formulation for the blade and counterweight assemblies. The codes are general so that other designs can be readily analyzed. The input for the codes is generally interactive to facilitate usage. The output of the codes is both tabular and graphical. Listings of the codes are provided. Predicted natural frequencies of the first several modes show reasonable agreement with experimental results. The analysis codes were originally developed on a DEC PDP 11/34 minicomputer and then downloaded and modified to run on an ITT XTRA personal computer. Studies conducted to evaluate the efficiency of running the programs on a personal computer as compared with the minicomputer indicated that, with the proper combination of hardware and software options, the efficiency of using a personal computer exceeds that of a minicomputer.

White, P. R.; Little, R. R.

1985-01-01

207

Fourier transform infrared spectrophotometry for thin film monitors: computer and equipment integration for enhanced capabilities  

NASA Astrophysics Data System (ADS)

Fourier transform infrared spectrophotometry (FTIR) is a valuable technique for monitoring thin films used in semiconductor device manufacture. Determinations of the constituent contents in borophosphosilicate (BPSG) phosphosilicate (PSG) silicon oxynitride (SiON:H and spin-on-glass (SOG) thin films are a few applications. Due to the nature of the technique FTIR instrumentation is one of the most extensively computer-dependent pieces of equipment that is likely to be found in a microelectronics plant. In the role of fab monitor or reactor characterization tool FTIR instruments can rapidly generate large amounts of data. Also the drive for greater accuracy and tighter precision is leading to the development of increasingly sophisticated data processing software that tax the computing abilities of most instrument local data stations. By linking a local FTIR data station to a remote minicomputer its capabilities are greatly improved. We discuss three classes of enhancement. First the FTIR in the fab area communicates and interacts in real time with the minicomputer: transferring data segments to it instructing it to perform sophisticated processing and returning the results to the operator in the fab. Characterizations of PSG thin films by this approach are discussed. Second the spectra of large numbers of samples are processed locally. The large database is then transmitted to the minicomputer for study by statistical/graphics software. Results of CVD-reactor spatial profiling experiments for plasma SiON are presented. Third processing of calibration spectra is performed

Cox, J. Neal; Sedayao, J.; Shergill, Gurmeet S.; Villasol, R.; Haaland, David M.

1991-03-01

208

Computer systems protection: Uninterruptible power supplies. January 1983-September 1989 (Citations from the Computer data base). Report for January 1983-September 1989  

SciTech Connect

This bibliography contains citations concerning equipment used to protect computer systems from electrical-power fluctuations and outages. Voltage regulators and back-up power supplies are evaluated. Surge suppressors as part of the uninterruptible power-supply system (UPS) are briefly mentioned; they are covered in depth in another bibliography. IEEE test results and general performance evaluations are included. UPS for large data centers and for minicomputers are discussed. Market forecasts are presented. (This updated bibliography contains 361 citations, 105 of which are new entries to the previous edition.)

Not Available

1989-09-01

209

Operator Station Design System - A computer aided design approach to work station layout  

NASA Technical Reports Server (NTRS)

The Operator Station Design System is resident in NASA's Johnson Space Center Spacecraft Design Division Performance Laboratory. It includes stand-alone minicomputer hardware and Panel Layout Automated Interactive Design and Crew Station Assessment of Reach software. The data base consists of the Shuttle Transportation System Orbiter Crew Compartment (in part), the Orbiter payload bay and remote manipulator (in part), and various anthropometric populations. The system is utilized to provide panel layouts, assess reach and vision, determine interference and fit problems early in the design phase, study design applications as a function of anthropometric and mission requirements, and to accomplish conceptual design to support advanced study efforts.

Lewis, J. L.

1979-01-01

210

On the development of an interactive resource information management system for analysis and display of spatiotemporal data  

NASA Technical Reports Server (NTRS)

The recent availability of timely synoptic earth imagery from the Earth Resources Technology Satellites (ERTS) provides a wealth of information for the monitoring and management of vital natural resources. Formal language definitions and syntax interpretation algorithms were adapted to provide a flexible, computer information system for the maintenance of resource interpretation of imagery. These techniques are incorporated, together with image analysis functions, into an Interactive Resource Information Management and Analysis System, IRIMAS, which is implemented on a Texas Instruments 980A minicomputer system augmented with a dynamic color display for image presentation. A demonstration of system usage and recommendations for further system development are also included.

Schell, J. A.

1974-01-01

211

A computer system for transcribing radiology reports.  

PubMed

A minicomputer system has been developed to assist in the transcription, distribution, and long-term storage of radiology reports. Reports are dictated in the traditional manner by a radiologist and then entered into specially programmed computer terminals by a transcriptionist. Completed reports are electronically distributed throughout the department and the hospital. Inactive reports are stored by the computer on microfiche. At one institution, the system is used to produce all of the reports in the radiology department, a total of approximately 200,000 reports per year. PMID:7384526

Jost, R G; Trachtman, J; Hill, R L; Smith, B A; Evens, R G

1980-07-01

212

An accelerated forth data-acquisition system  

NASA Technical Reports Server (NTRS)

A new data acquisition system was put into operation at Urbana in August 1984. It uses a standard Apple 2 microcomputer with 48 k RAM and a standard 5 1/4 inch floppy disk. Design criteria for the system is given. The system was implemented using fig-FORTH, a threaded interpretive language which permits easy interfacing to machine code. The throughput of this system is better by a factor of 6 than the PDP-15 minicomputer system previously used, and it has the real time display feature and provides the data in much more convenient form. The features which contribute to this improved performance is listed.

Bowhill, S. A.; Rennier, A. D.

1986-01-01

213

Application of image processing techniques to fluid flow data analysis  

NASA Technical Reports Server (NTRS)

The application of color coding techniques used in processing remote sensing imagery to analyze and display fluid flow data is discussed. A minicomputer based color film recording and color CRT display system is described. High quality, high resolution images of two-dimensional data are produced on the film recorder. Three dimensional data, in large volume, are used to generate color motion pictures in which time is used to represent the third dimension. Several applications and examples are presented. System hardware and software is described.

Giamati, C. C.

1981-01-01

214

Development INTERDATA 8/32 computer system  

NASA Technical Reports Server (NTRS)

The capabilities of the Interdata 8/32 minicomputer were examined regarding data and word processing, editing, retrieval, and budgeting as well as data management demands of the user groups in the network. Based on four projected needs: (1) a hands on (open shop) computer for data analysis with large core and disc capability; (2) the expected requirements of the NASA data networks; (3) the need for intermittent large core capacity for theoretical modeling; (4) the ability to access data rapidly either directly from tape or from core onto hard copy, the system proved useful and adequate for the planned requirements.

Sonett, C. P.

1983-01-01

215

Applications of intelligent-measurement systems in controlled-fusion research  

SciTech Connect

The paper describes the control and instrumentation for the Mirror Fusion Test Facility at the Lawrence Livermore National Laboratory, California, USA. This large-scale scientific experiment in controlled thermonuclear fusion, which is currently being expanded, originally had 3000 devices to control and 7000 sensors to monitor. A hierarchical computer control system, is used with nine minicomputers forming the supervisory system. There are approximately 55 local control and instrumentation microcomputers. In addition, each device has its own monitoring equipment, which in some cases consists of a small computer. After describing the overall system a more detailed account is given of the control and instrumentation for two large superconducting magnets.

Owen, E.W.; Shimer, D.W.; Lindquist, W.B.; Peterson, R.L.; Wyman, R.H.

1981-06-22

216

Comparison of existing digital image analysis systems for the analysis of Thematic Mapper data  

NASA Technical Reports Server (NTRS)

Most existing image analysis systems were designed with the Landsat Multi-Spectral Scanner in mind, leaving open the question of whether or not these systems could adequately process Thematic Mapper data. In this report, both hardware and software systems have been evaluated for compatibility with TM data. Lack of spectral analysis capability was not found to be a problem, though techniques for spatial filtering and texture varied. Computer processing speed and data storage of currently existing mini-computer based systems may be less than adequate. Upgrading to more powerful hardware may be required for many TM applications.

Likens, W. C.; Wrigley, R. C.

1984-01-01

217

Consolidation of data base for Army generalized missile model  

NASA Technical Reports Server (NTRS)

Data from plume interaction tests, nose mounted canard configuration tests, and high angle of attack tests on the Army Generalized Missile model are consolidated in a computer program which makes them readily accessible for plotting, listing, and evaluation. The program is written in FORTRAN and will run on an ordinary minicomputer. It has the capability of retrieving any coefficient from the existing DATAMAN tapes and displaying it in tabular or plotted form. Comparisons of data taken in several wind tunnels and of data with the predictions of Program MISSILE2 are also presented.

Klenke, D. J.; Hemsch, M. J.

1980-01-01

218

Computerized nuclear material system at Sandia National Laboratories  

SciTech Connect

SNLA developed and implemented a nuclear material control and accountability system on an HP 3000 minicomputer. The Sandia Nuclear Materials Computer System (SNMCS) which became operative in January 1980 provides: control of shipments and receivals of nuclear material, control of internal transfers of nuclear material, automated inventory with a bar code system, control of inventory adjustments, automated reporting/transmitting to other contractors and operations offices, automated ledgers and journals for material weights and costs, and interface to the Albuquerque Operations Office (ALO) Automated 741 System.

Tischhauser, J.L.

1980-01-01

219

DISTRIBUTED GROUND-WATER DATA BASE OF THE U. S. G. S.  

USGS Publications Warehouse

During the past 20 years, the ground-water data base of the U. S. Geological Survey has evolved from paper files in local offices, to a national data base on a central mainframe computer, to a distributed data base on a network of 49 minicomputers throughout the United States. Users in local offices have easy, inexpensive access to the distributed data base. The distributed data base has caused some problems in data management but has increased the overall quality of the data base.

Luckey, Richard, R.

1987-01-01

220

E-Division semiannual report. Progress report, December 1, 1976--May 30, 1977. [LASL  

SciTech Connect

Detector research and development are described first. Then, briefer reports are given on research on the following topics: electronic temperature monitoring and identification for livestock, electromagnetic probing (for fracture mapping), fiber optics for downhole instrumentation (for weapons testing), adaptive control applied to HVAC systems, energy environmental simulator, and high-temperature electronics. Engineering support (development projects, program support, instrumentation support) and technical services (general group activities, recharge programs, research and development programs, minicomputer maintenance, information and training services) are sketched. The report is basically administrative in nature, with a minimum of technical material. 47 figures, 10 tables. (RWR)

Kelley, P.A. (comp.)

1977-11-01

221

GEM: Statistical weather forecasting procedure  

NASA Technical Reports Server (NTRS)

The objective of the Generalized Exponential Markov (GEM) Program was to develop a weather forecast guidance system that would: predict between 0 to 6 hours all elements in the airways observations; respond instantly to the latest observed conditions of the surface weather; process these observations at local sites on minicomputing equipment; exceed the accuracy of current persistence predictions at the shortest prediction of one hour and beyond; exceed the accuracy of current forecast model output statistics inside eight hours; and be capable of making predictions at one location for all locations where weather information is available.

Miller, R. G.

1983-01-01

222

Evaluation of initial collector field performance at the Langley Solar Building Test Facility  

NASA Technical Reports Server (NTRS)

The thermal performance of the solar collector field for the NASA Langley Solar Building Test Facility is given for October 1976 through January 1977. A 1,180 square meter solar collector field with seven collector designs helped to provide hot water for the building heating system and absorption air conditioner. The collectors were arranged in 12 rows with nominally 51 collectors per row. Heat transfer rates for each row were calculated and recorded along with sensor, insolation, and weather data every five minutes using a minicomputer. The agreement between the experimental and predicted collector efficiencies was generally within five percentage points.

Boyle, R. J.; Jensen, R. N.; Knoll, R. H.

1977-01-01

223

Catastrophe theory as a tool for determining synchronous power system dynamic stability  

SciTech Connect

A mathematical method, Catastrophe Theory, is applied to the problem of electrical power system dynamic stability. It is suggested that this offers a method for the continual monitoring of power system stability margins by the use of visual graphic display produced by a dedicated minicomputer using information monitored from the power system. The approach arises from long experience in the field of power system stability and a pre-occupation with visualising this multi-dimensional dynamic problem in such a way as to enhance comprehension, both as an aid to understanding and as a method for rapid assimilation of the significance of changes in the system.

Sallam, A.A.; Dineley, J.L.

1983-03-01

224

Mobile lidar system for environmental probing.  

PubMed

A fully mobile remote-sensing system based on the lidar principle is described. With this system, atmospheric probing using Mie scattering, differential absorption, or Raman techniques can be performed yielding information on atmospheric pollutants or general atmospheric parameters. The system incorporates a powerful Nd:YAG laser pumping a dye laser and is equipped with a fixed Newtonian telescope used in conjunction with a flat steering mirror. The lidar signals are electrically recorded using a fast-transient digitizer and are processed by a minicomputer, which also controls the laser, the chosen measuring direction, and the output media. Examples of measurements on atmospheric NO(2) and SO(2) are given. PMID:20372350

Fredriksson, K; Galle, B; Nyström, K; Svanberg, S

1981-12-15

225

Distributed data base systems with special emphasis toward POREL  

NASA Technical Reports Server (NTRS)

In the last few years a number of research and advanced development projects have resulted in distributed data base management prototypes. POREL, developed at the University of Stuttgart, is a multiuser, distributed, relational system developed for wide and local area networks of minicomputers and advanced micros. The general objectives of such data base systems and the architecture of POREL are discussed. In addition a comparison of some of the the existing distributed DMBS is included to provide the reader with information about the current state of the art.

Neuhold, E. J.

1984-01-01

226

Recent advances in strapdown inertial navigation  

NASA Technical Reports Server (NTRS)

The computational requirements and basic features of strapdown gyroscopes for inertial navigation are discussed. Strapdown navigators currently require 20 to 50% of the available time of a minicomputer with a capability of several hundred thousand operations per second; memory requirements are 2000 to 3000 16-bit words. A system in which these computational demands are met by three limited capability microcomputers is described. A technique using dedicated microprocessors in the place of analog electronics in the gyroscope control loops is discussed, and attention is given to applications of microprocessor technology in redundant strapdown navigation systems and associated flight control systems.

Napjus, G. A.

1975-01-01

227

Industrial linguistic control  

SciTech Connect

The use of various types of controllers and control techniques for industrial process is discussed. An ongoing research and development project is reported on the application of intelligent linguistic controllers to processes in the cement industry in Greece which have, in the past, been controllable only by human operators. Prototype linguistic controllers using fuzzy logic have been implemented and tested on a rotary kiln precalciner flash furnace (3-input 3-output) and on a cement mill separator (3-input 2-output) with good results. Originally implemented on a supervisory minicomputer, the algorithms have been transferred to microcomputers which form the heart of this class of intelligent linguistic controllers. 6 references.

King, R.E.; Karonis, F.

1983-01-01

228

Programming for energy monitoring/display system in multicolor lidar system research  

NASA Technical Reports Server (NTRS)

The Z80 microprocessor based computer program that directs and controls the operation of the six channel energy monitoring/display system that is a part of the NASA Multipurpose Airborne Differential Absorption Lidar (DIAL) system is described. The program is written in the Z80 assembly language and is located on EPROM memories. All source and assembled listings of the main program, five subroutines, and two service routines along with flow charts and memory maps are included. A combinational block diagram shows the interfacing (including port addresses) between the six power sensors, displays, front panel controls, the main general purpose minicomputer, and this dedicated microcomputer system.

Alvarado, R. C., Jr.; Allen, R. J.

1982-01-01

229

Alternatives in the complement and structure of NASA teleprocessing resources  

NASA Technical Reports Server (NTRS)

The results are presented of a program to identify technical innovations which would have an impact on NASA data processing and describe as fully as possible the development work necessary to exploit them. Seven of these options for NASA development, as the opportunities to participate in and enhance the advancing information system technology were called, are reported. A detailed treatment is given of three of the options, involving minicomputers, mass storage devices and software development techniques. These areas were picked by NASA as having the most potential for improving their operations.

1972-01-01

230

A computer system to analyze showers in nuclear emulsions: Center Director's discretionary fund report  

NASA Technical Reports Server (NTRS)

A system to rapidly digitize data from showers in nuclear emulsions is described. A TV camera views the emulsions though a microscope. The TV output is superimposed on the monitor of a minicomputer. The operator uses the computer's graphics capability to mark the positions of particle tracks. The coordinates of each track are stored on a disk. The computer then predicts the coordinates of each track through successive layers of emulsion. The operator, guided by the predictions, thus tracks and stores the development of the shower. The system provides a significant improvement over purely manual methods of recording shower development in nuclear emulsion stacks.

Meegan, C. A.; Fountain, W. F.; Berry, F. A., Jr.

1987-01-01

231

Real-time analysis of sperm motion using automatic video image digitization.  

PubMed

A methodology is described for automatic, real-time analysis of sperm movement characteristics. Video micrographic images of spermatozoa are digitized, compressed, and then analyzed using a Motion Analysis Corporation Expert Vision system. The system includes a VP-100 video processor, a video camera, and a Sun-2/120 minicomputer. Algorithms for detection of and discrimination among sperm are described, and desirable operating characteristics of the system are considered. Salient parameters which characterize the kinematics of sperm swimming trajectories are discussed. PMID:3853969

Katz, D F; Davis, R O; Delandmeter, B A; Overstreet, J W

1985-12-01

232

Computer system isolates faults  

SciTech Connect

Maintaining transaction processing systems in continuous operation, a minicomputer system made by tolerant systems detects and isolates faults, then transfers work loads to the appropriate backup resource. An eternity system is actually 1 to 15 computer systems, called system building blocks, interconnected by a communication network. Modularity is provided by tolerant's flexible architecture technique. This allows a user to expand system capacity with nondedicated computers which can be assigned to tasks such as increasing processing power, user accessibility and database size as dictated by needs. The loosely-coupled nature of the system increases reliability.

Hall, D.E.

1983-11-01

233

Manipulator for rotating and examining small spheres  

DOEpatents

A manipulator is disclosed which provides fast, accurate rotational positioning of a small sphere, such as an inertial confinement fusion target, which allows inspecting of the entire surface of the sphere. The sphere is held between two flat, flexible tips which move equal amounts in opposite directions. This provides rolling of the ball about two orthogonal axes without any overall translation. The manipulator may be controlled, for example, by an x- and y-axis driven controlled by a mini-computer which can be programmed to generate any desired scan pattern. 8 figs.

Weinstein, B.W.; Willenborg, D.L.

1980-02-12

234

Manipulator for rotating and examining small spheres  

DOEpatents

A manipulator which provides fast, accurate rotational positioning of a small sphere, such as an inertial confinement fusion target, which allows inspecting of the entire surface of the sphere. The sphere is held between two flat, flexible tips which move equal amounts in opposite directions. This provides rolling of the ball about two orthogonal axes without any overall translation. The manipulator may be controlled, for example, by an x- and y-axis driven controlled by a mini-computer which can be programmed to generate any desired scan pattern.

Weinstein, Berthold W. (Livermore, CA); Willenborg, David L. (Livermore, CA)

1980-01-01

235

A computer-controlled instrumentation system for third octave analysis  

NASA Technical Reports Server (NTRS)

An instrumentation system is described which employs a minicomputer, a one-third octave band analyzer, and a time code/tape search unit for the automatic control and analysis of third-octave data. With this system the information necessary for data adjustment is formatted in such a way as to eliminate much operator interface, thereby substantially reducing the probability for error. A description of a program for the calculation of effective perceived noise level from aircraft noise data is included as an example of how this system can be used.

Faulcon, N. D.; Monteith, J. H.

1978-01-01

236

The data handling for spixe measurements with the Eindhoven cyclotron  

NASA Astrophysics Data System (ADS)

For the scanning PIXE measurements a mini-computer is used for the on-line experiment control as well as for the data acquisition. For each picture element a spectrum is stored. A peak search program taking a computer time of about 2.5 s per spectrum has been developed. The reliability of this program will be shown. The influence of the beam profile on the lateral resolution in the topography of a trace element can be reduced by a two dimensional deconvolution routine. Also smoothing in the two dimensions of the topography can be applied if this is desirable because of poor statistics.

Prins, M.; Hoffman, L. J. B.; Van Lieshoud, F. A. M.

1982-06-01

237

User's operating procedures. Volume 1: Scout project information programs  

NASA Technical Reports Server (NTRS)

A review of the user's operating procedures for the Scout Project Automatic Data System, called SPADS is given. SPADS is the result of the past seven years of software development on a Prime minicomputer located at the Scout Project Office. SPADS was developed as a single entry, multiple cross reference data management and information retrieval system for the automation of Project office tasks, including engineering, financial, managerial, and clerical support. The instructions to operate the Scout Project Information programs in data retrieval and file maintenance via the user friendly menu drivers is presented.

Harris, C. G.; Harris, D. K.

1985-01-01

238

User's operating procedures. Volume 3: Projects directorate information programs  

NASA Technical Reports Server (NTRS)

A review of the user's operating procedures for the scout project automatic data system, called SPADS is presented. SPADS is the results of the past seven years of software development on a prime mini-computer. SPADS was developed as a single entry, multiple cross-reference data management and information retrieval system for the automation of Project office tasks, including engineering, financial, managerial, and clerical support. This volume, three of three, provides the instructions to operate the projects directorate information programs in data retrieval and file maintenance via the user friendly menu drivers.

Haris, C. G.; Harris, D. K.

1985-01-01

239

Gait Analysis Laboratory  

NASA Technical Reports Server (NTRS)

Complete motion analysis laboratory has evolved out of analyzing walking patterns of crippled children at Stanford Children's Hospital. Data is collected by placing tiny electrical sensors over muscle groups of child's legs and inserting step-sensing switches in soles of shoes. Miniature radio transmitters send signals to receiver for continuous recording of abnormal walking pattern. Engineers are working to apply space electronics miniaturization techniques to reduce size and weight of telemetry system further as well as striving to increase signal bandwidth so analysis can be performed faster and more accurately using a mini-computer.

1976-01-01

240

CerebralBlood Flow Study in Patients with Moyamoya Disease Evaluated by IMP SPECT  

Microsoft Academic Search

Westudied theusefulness ofIMPSPECT w@iacetazolamide in 16patients withmoyamoya disease. Cerebral angiography was performedfor all patents who were classifiedin three grades according to theirangiOgraphIC stages.Methods:Techniques usedindudedring-type emission computed tomography witha minicomputer system.Patientsrecehted 111 MBqof 1@l-lMP andSPECTimageswereobtained 20 mmposbnjectkn. Nine pa@ents werestudiedu@ng iodoamphetan*ie (IMP)SPECT wffli and wfthoutacetazc@amide. IMP SPECTw@iacetazo lamidewas performed 20 mmaftereachinjecdon of 1 g of acetazolamide. Results:Lowperfusion areasintheupperand lowerfrontal,parietalandtemporalregionsin grades2 and3

Hiroaki Hoshi; Takashi OhniShi; Seishi Jinnouchi; Shigemi Futami; Shigeki Nagamachi; Takao Kodama; Katsushi Watanabe; TakaShi Ueda; Shinichiro Wakisaka

241

APSAS; an Automated Particle Size Analysis System  

USGS Publications Warehouse

The Automated Particle Size Analysis System integrates a settling tube and an electroresistance multichannel particle-size analyzer (Coulter Counter) with a Pro-Comp/gg microcomputer and a Hewlett Packard 2100 MX(HP 2100 MX) minicomputer. This system and its associated software digitize the raw sediment grain-size data, combine the coarse- and fine-fraction data into complete grain-size distributions, perform method of moments and inclusive graphics statistics, verbally classify the sediment, generate histogram and cumulative frequency plots, and transfer the results into a data-retrieval system. This system saves time and labor and affords greater reliability, resolution, and reproducibility than conventional methods do.

Poppe, Lawrence J.; Eliason, A. H.; Fredericks, J. J.

1985-01-01

242

Registration of Heat Capacity Mapping Mission day and night images  

NASA Technical Reports Server (NTRS)

Neither iterative registration, using drainage intersection maps for control, nor cross correlation techniques were satisfactory in registering day and night HCMM imagery. A procedure was developed which registers the image pairs by selecting control points and mapping the night thermal image to the daytime thermal and reflectance images using an affine transformation on a 1300 by 1100 pixel image. The resulting image registration is accurate to better than two pixels (RMS) and does not exhibit the significant misregistration that was noted in the temperature-difference and thermal-inertia products supplied by NASA. The affine transformation was determined using simple matrix arithmetic, a step that can be performed rapidly on a minicomputer.

Watson, K.; Hummer-Miller, S.; Sawatzky, D. L. (principal investigators)

1982-01-01

243

User's manual for the Functional Relay Operation Monitor (FROM)  

SciTech Connect

Sandia's Digital Systems Development Division 1521 has developed a new functional relay tester. Capabilities of this tester include the measurement of coil and contact resistance, hipot, operate current, and contact operation and bounce times. The heart of the tester is a Hewlett-Packard 21MX minicomputer that uses BASIC or FORTRAN programming languages. All measurements are made by means of simple program calls, and all measurement standards are traceable to the National Bureau of Standards. Functional relay test data are stored on a disc drive and can be output as hard copy, manipulated in the computer, or sent over a distributed-system link to other Sandia computers. 17 figures, 4 tables.

Gustke, F.R.

1981-02-01

244

Nuclear blast program for mini-calculators. Engineering report  

SciTech Connect

A program has been written for the HP-97 (HP-67) minicomputer to solve the blast wave from a nuclear detonation. The program first determines standard-altitude parameters for the altitude of interest. Using these parameters as input, the program then calculates pressures, temperatures, densities, velocities, and Mach Numbers in front and behind the shock. Three subroutines allows the user to input (for any altitude < or = 82,000 ft) a specific overpressure across the shock, a specific gust velocity behind the blast wave, or a specific dynamic pressure behind the blast wave. Corresponding parameters for each input are calculated.

Patrick, R.P.

1981-03-09

245

KSC ground support operations and equipment for the space transportation system  

NASA Technical Reports Server (NTRS)

A significant element of the Kennedy Space Center's ground support equipment for the Space Shuttle is the Launch Processing System, which provides a high level of automation for all operations, including the checkout of the Orbiter, Solid Rocket Boosters, and External Tank. Other direct support elements of the Ground Support Equipment accomplish environmental conditioning, provide and control power, gases, and fluids, and supply vehicle facility and personnel fire protection. Attention is given to the prelaunch functions of the Launch Control Center's Firing Rooms, which contain minicomputers, a data recording area, the Hardware Interface Modules, a Common Data Buffer, and Front End Processors.

Utsman, T. E.

1982-01-01

246

Automatisation of chronic toxicities.  

PubMed

Automatisation of collection and processing of chronic toxicity tests are presented in a 'pharmaceutical research center environment'. The data are either analog signals or numerical values transmitted to the computer, from terminals posted in various laboratories. The minicomputer works under time-sharing system which allows many users to access to the programs in the same time. This system controls about 3000 results a day and prints complete reports in less than two days. Rewriting is then avoided thanks to this system, and in such a way, the reports are more reliable. PMID:755605

Ageron, M; Battaia, R; Dinh, B K; Gervois, J P

1978-09-01

247

Optical instrumentation engineering in science, technology and society; Proceedings of the Sixteenth Annual Technical Meeting, San Mateo, Calif., October 16-18, 1972  

NASA Technical Reports Server (NTRS)

Visual tracking performance in instrumentation is discussed together with photographic pyrometry in an aeroballistic range, optical characteristics of spherical vapor bubbles in liquids, and the automatic detection and control of surface roughness by coherent diffraction patterns. Other subjects explored are related to instruments, sensors, systems, holography, and pattern recognition. Questions of data handling are also investigated, taking into account minicomputer image storage for holographic interferometry analysis, the design of a video amplifier for a 90 MHz bandwidth, and autostereoscopic screens. Individual items are announced in this issue.

Katz, Y. H.

1973-01-01

248

Performance analysis for general PN-spread-spectrum acquisition techniques  

NASA Astrophysics Data System (ADS)

A computational technique for the rapid determination of acquisition-time probability-density functions (PDF) for pseudonoise-spread-spectrum-system (PN-SSS) search algorithms is presented. The method is shown to apply to different search strategies and to detectors with both fixed and variable sample size, with a priori code-phase distribution. The mean and variance of the acquisition time can be derived, without calculating the PDF, in minicomputer computation times of the order of a few seconds. It is suggested that this technique can help speed up the PN-SSS acquisition-device design process.

Meyr, H.; Polzer, G.

1983-12-01

249

Automated emergency meteorological response system  

SciTech Connect

A sophisticated emergency response system was developed to aid in the evaluation of accidental releases of hazardous materials from the Savannah River Plant to the environment. A minicomputer system collects and archives data from both onsite meteorological towers and the National Weather Service. In the event of an accidental release, the computer rapidly calculates the trajectory and dispersion of pollutants in the atmosphere. Computer codes have been developed which provide a graphic display of predicted concentration profiles downwind from the source, as functions of time and distance.

Pepper, D W

1980-01-01

250

A real time data acquisition system using the MIL-STD-1553B bus. [for transmission of data to host computer for control law processing  

NASA Technical Reports Server (NTRS)

A flight digital data acquisition system that uses the MIL-STD-1553B bus for transmission of data to a host computer for control law processing is described. The instrument, the Remote Interface Unit (RIU), can accommodate up to 16 input channels and eight output channels. The RIU employs a digital signal processor to perform local digital filtering before sending data to the host. The system allows flexible sensor and actuator data organization to facilitate quick control law computations on the host computer. The instrument can also run simple control laws autonomously without host intervention. The RIU and host computer together have replaced a similar larger, ground minicomputer system with favorable results.

Peri, Frank, Jr.

1992-01-01

251

Close to real life. [solving for transonic flow about lifting airfoils using supercomputers  

NASA Technical Reports Server (NTRS)

NASA's Numerical Aerodynamic Simulation (NAS) facility for CFD modeling of highly complex aerodynamic flows employs as its basic hardware two Cray-2s, an ETA-10 Model Q, an Amdahl 5880 mainframe computer that furnishes both support processing and access to 300 Gbytes of disk storage, several minicomputers and superminicomputers, and a Thinking Machines 16,000-device 'connection machine' processor. NAS, which was the first supercomputer facility to standardize operating-system and communication software on all processors, has done important Space Shuttle aerodynamics simulations and will be critical to the configurational refinement of the National Aerospace Plane and its intergrated powerplant, which will involve complex, high temperature reactive gasdynamic computations.

Peterson, Victor L.; Bailey, F. Ron

1988-01-01

252

Robot welding process control  

NASA Technical Reports Server (NTRS)

This final report documents the development and installation of software and hardware for Robotic Welding Process Control. Primary emphasis is on serial communications between the CYRO 750 robotic welder, Heurikon minicomputer running Hunter & Ready VRTX, and an IBM PC/AT, for offline programming and control and closed-loop welding control. The requirements for completion of the implementation of the Rocketdyne weld tracking control are discussed. The procedure for downloading programs from the Intergraph, over the network, is discussed. Conclusions are made on the results of this task, and recommendations are made for efficient implementation of communications, weld process control development, and advanced process control procedures using the Heurikon.

Romine, Peter L.

1991-01-01

253

Studies of extended planetary atmospheres  

NASA Technical Reports Server (NTRS)

There was a theoretical study of physical and chemical processes in the stratosphere, later broadened to include the mesosphere. Particular emphasis was laid on testing of proposed height profiles of the eddy diffusion coefficient against observed tracer data. Eventually the effort shifted to study of ozone time series in satellite data, and interpretation in terms of aeronomical processes. Since all this work is computer-intensive, the first year of funding also contributed to the acquisition of a powerful minicomputer system, in collaboration with several other faculty members. This proved to be highly successful and cost effective.

Hunten, D. M.; Massie, S. T.; Hood, L. L.

1986-01-01

254

Tubular heat exchanger design. Complement to the report MT 131  

NASA Astrophysics Data System (ADS)

An interactive program for a minicomputer which calculates the thermal performance of shell and tube heat exchangers was written. The algorithms used and program data flow are described. Heat transfer and pressure drop correlations were assembled from the literature to aid in limiting the overdimensioning of heat exchangers. The user can solve design problems by updating geometrical input parametes until the desired performance criteria are reached. The behavior of a given heat exchanger in partial load or overload conditions, or an exchanger having different fluids can be checked by changing general performance criteria or fluid numbers. An example of a marine oil cooler is used to illustrate use of the program.

Vandeberghe, F.

1980-11-01

255

U. S. GEOLOGICAL SURVEY'S NATIONAL REAL-TIME HYDROLOGIC INFORMATION SYSTEM USING GOES SATELLITE TECHNOLOGY.  

USGS Publications Warehouse

The U. S. Geological Survey maintains the basic hydrologic data collection system for the United States. The Survey is upgrading the collection system with electronic communications technologies that acquire, telemeter, process, and disseminate hydrologic data in near real-time. These technologies include satellite communications via the Geostationary Operational Environmental Satellite, Data Collection Platforms in operation at over 1400 Survey gaging stations, Direct-Readout Ground Stations at nine Survey District Offices and a network of powerful minicomputers that allows data to be processed and disseminate quickly.

Shope, Jr. , William, G.

1987-01-01

256

A Macroscopic and Microscopic Biomedical Image Processing System  

PubMed Central

This paper summarizes the current status of a biomedical image processing system being developed in the Biomedical Engineering Program, University of Iowa. This system consists of an EyeCom® II picture digitizer and display, a PDP 11/34 minicomputer with peripherals, a light table and a microscope, and the associate image processing software. The capability of the present system, both hardware and software, is described in detail. Some current biomedical applications using this system along with illustrations are given. Two of the future developments: dynamic imaging and true color imaging are also outlined. ImagesFigure 3Figure 5p583-bFigure 6AFigure 6B

Huang, H.K.; Mankovich, Nicholas J.; Altmaier, Joseph

1981-01-01

257

Development and Operation of a MUMPS Laboratory Information System: A Decade's Experience  

PubMed Central

We describe more than a decade's experience with inhouse development and operation of a clinical laboratory computer system written in the MUMPS programming language for a 1000 bed teaching hospital. The JHLIS is a networked minicomputer system that supports accessioning, instrument monitoring, and result reporting for over 3000 specimens and 30,000 test results daily. Development and operation of the system accounts for 6% of the budget of the laboratories which have had a 70% increase in workload over the past decade. Our experience with purchased MUMPS software maintained and enhanced inhouse suggests an attractive alternative to lengthy inhouse development.

Miller, R. E.; Causey, J. P.; Moore, G. W.; Wilk, G. E.

1988-01-01

258

Man-machine analysis of translation and work tasks of Skylab films  

NASA Technical Reports Server (NTRS)

An objective approach to determine the concurrent validity of computer-graphic models is real time film analysis. This technique was illustrated through the procedures and results obtained in an evaluation of translation of Skylab mission astronauts. The quantitative analysis was facilitated by the use of an electronic film analyzer, minicomputer, and specifically supportive software. The uses of this technique for human factors research are: (1) validation of theoretical operator models; (2) biokinetic analysis; (3) objective data evaluation; (4) dynamic anthropometry; (5) empirical time-line analysis; and (6) consideration of human variability. Computer assisted techniques for interface design and evaluation have the potential for improving the capability for human factors engineering.

Hosler, W. W.; Boelter, J. G.; Morrow, J. R., Jr.; Jackson, J. T.

1979-01-01

259

Online assessment of a distributed processor  

NASA Technical Reports Server (NTRS)

ORT (Operational Readiness Test) software allows one engineer to test readiness of 64 minicomputers and their peripherals from single console. Software makes roll call of computers and peripherals via common data buffer to check readiness of system in morning "wake up" or at other important times. Subsystems are tested in parallel to save time. "Watchdog" terminates test of any system that does not respond in time, so one failed system does not halt test sequence. Entire rollcall is complete in about 15 minutes. Software is designed for Space Shuttle prelaunch checkout, but approach should interest users of similar equipment.

Ehrlich, L. F.

1980-01-01

260

Facility for non-destructive analysis for major and trace elements using neutron-capture gamma-ray spectrometry  

Microsoft Academic Search

A facility for neutron-capture ?-ray spectroscopy for analytical purposes has been developed and tested at the National Bureau\\u000a of Standards reactor. The system consists of an internal beam tube with collimators, an external beam tube and irradiation\\u000a station, a Compton-suppressed Ge(Li) ?-ray detection system, and a minicomputer-based data-collection and-analysis system.\\u000a Detection limits have been established for many elements and errors

D. L. Anderson; M. P. Failey; W. H. Zoller; W. B. Walters; G. E. Gordon; R. M. Lindstrom

1981-01-01

261

Simplified extension of the LSI-11 Q-Bus for a high energy laser control application  

SciTech Connect

Antares, a large, experimental laser fusion facility under construction at Los Alamos National Laboratory in New Mexico, is controlled by a network of PDP-11 minicomputers and microprocessors. The remote nodes of the Antares control network are based on an LSI-11/2 microcomputer interfaced to an STD Bus. This machine interface or MI forms the intelligent process controller located directly adjacent to the many diverse laser subsystem devices. The STD Bus, linked to the LSI-11/2 microcomputer, offers a standardized, cost effective means for the development of the specialized interface functions required for the high energy laser environment.

Burczyk, L.

1981-01-01

262

A multiprocessor airborne lidar data system  

NASA Technical Reports Server (NTRS)

A new multiprocessor data acquisition system was developed for the existing Airborne Oceanographic Lidar (AOL). This implementation simultaneously utilizes five single board 68010 microcomputers, the UNIX system V operating system, and the real time executive VRTX. The original data acquisition system was implemented on a Hewlett Packard HP 21-MX 16 bit minicomputer using a multi-tasking real time operating system and a mixture of assembly and FORTRAN languages. The present collection of data sources produce data at widely varied rates and require varied amounts of burdensome real time processing and formatting. It was decided to replace the aging HP 21-MX minicomputer with a multiprocessor system. A new and flexible recording format was devised and implemented to accommodate the constantly changing sensor configuration. A central feature of this data system is the minimization of non-remote sensing bus traffic. Therefore, it is highly desirable that each micro be capable of functioning as much as possible on-card or via private peripherals. The bus is used primarily for the transfer of remote sensing data to or from the buffer queue.

Wright, C. W.; Bailey, S. A.; Heath, G. E.; Piazza, C. R.

1988-01-01

263

BIRP - A way to search through image engineering data  

NASA Technical Reports Server (NTRS)

Several hundred thousand images have been returned by planetary missions and by earth-orbiting satellites. Locating specific images for study based on engineering data can be cumbersome and time consuming if done manually. BIRP, a FORTRAN program for small computers, is designed to quickly search through catalogs of image engineering data. A description of the desired images is entered and the BIRP program finds the images meeting the requirements. A videodisk player or microfiche reader may be controlled by BIRP so that images can be viewed immediately after a search. A search through 50,000 images on a single parameter takes less than 1 min on a minicomputer. Data for each parameter is stored in a separate file so that the number of files and thus the storage space required may be varied to fit computers with different storage capacities. Most modern minicomputers with FORTRAN compilers and an 8-bit byte variable type may use BIRP with minor modifications to the program.

Bolef, L. K.; Guinness, E. A.; Arvidson, R. E.

1982-01-01

264

PC and mainframe computer-graphics techniques applied to volumetric evaluation of a mature oil field  

SciTech Connect

Mapping and volumetric analysis of large reservoirs are important steps in evaluating mature oil fields for secondary and tertiary development. This paper describes how a research group mapped and conducted an extensive volumetric analysis on the Zenith pool, a large, mature oil field in central Kansas, with a Data General MV20000 minicomputer with Surface III mapping software and a PC with Surfer and spreadsheet software. A step-by-step procedure was developed to generate structure, isopach, and porosity maps for the five main reservoirs in the field. Lotus 123{sup TM} spreadsheets were developed to compile locations, formation tops, and other critical data for more than 500 wells. These data were sent to the minicomputer to generate contour maps depicting structure, isopachs, and porosities with output directed to an electrostatic color plotter. Grid-to-grid manipulation and cross multiplication of these contour maps allowed construction of a porosity-foot map for each reservoir. The final contour maps incorporated the effects of oil/water contact (OWC) with a porosity cutoff determined from porosity/permeability crossplots. Integration of the porosity-foot maps facilitated volumetric and spatial comparison with historic production data.

Newell, K.D.; Schoeling, L.G.; Wong, J.C. (Univ. of Kansas, KS (US))

1990-11-01

265

Refractive index and absorption detector for liquid chromatography based on Fabry-Perot interferometry  

DOEpatents

A refractive index and absorption detector are disclosed for liquid chromatography. It is based in part on a Fabry-Perot interferometer and is used for the improved detection of refractive index and absorption. It includes a Fabry-Perot interferometer having a normally fixed first partially reflecting mirror and a movable second partially reflecting mirror. A chromatographic flow-cell is positioned between the mirrors along the optical axis of a monochromatic laser beam passing through the interferometer. A means for deriving information about the interference fringes coming out of the interferometer is used with a mini-computer to compute the refractive index of the specimen injected into the flow cell. The minicomputer continuously scans the interferometer for continuous refractive index readings and outputs the continuous results of the scans on a chart recorder. The absorption of the specimen can concurrently be scanned by including a second optical path for an excitation laser which will not interfere with the first laser, but will affect the specimen so that absorption properties can be detected. By first scanning for the refractive index of the specimen, and then immediately adding the excitation laser and subsequently scanning for the refractive index again, the absorption of the specimen can be computed and recorded. 10 figs.

Yeung, E.S.; Woodruff, S.D.

1984-06-19

266

Refractive index and absorption detector for liquid chromatography based on Fabry-Perot interferometry  

DOEpatents

A refractive index and absorption detector for liquid chromatography. It is based in part on a Fabry-Perot interferometer and is used for the improved detection of refractive index and absorption. It includes a Fabry-Perot interferometer having a normally fixed first partially reflecting mirror and a movable second partially reflecting mirror. A chromatographic flow-cell is positioned between the mirrors along the optical axis of a monochromatic laser beam passing through the interferometer. A means for deriving information about the interference fringes coming out of the interferometer is used with a mini-computer to compute the refractive index of the specimen injected into the flow cell. The minicomputer continuously scans the interferometer for continuous refractive index readings and outputs the continuous results of the scans on a chart recorder. The absorption of the specimen can concurrently be scanned by including a second optical path for an excitation laser which will not interfere with the first laser, but will affect the specimen so that absorption properties can be detected. By first scanning for the refractive index of the specimen, and then immediately adding the excitation laser and subsequently scanning for the refractive index again, the absorption of the specimen can be computed and recorded.

Yeung, Edward S. (Ames, IA); Woodruff, Steven D. (Ames, IA)

1984-06-19

267

Technology innovation and management in the US Bureau of the Census: Discussion and recommendations  

SciTech Connect

This report contains a set of recommendations prepared by Oak Ridge National Laboratory (ORNL) for the US Bureau of the Census pertaining to technology innovation and management. Technology has the potential to benefit the Bureau's data collection, capture, processing, and analysis activities. The entire Bureau was represented from Decennial Census to Economic Programs and various levels of Bureau management and numerous experts in technology. Throughout the Bureau, workstations, minicomputers, and microcomputers have found their place along side the Bureau's mainframes. The Bureau's new computer file structure called the Topologically Integrated Geographic Encoding and Referencing data base (TIGER) represents a major innovation in geographic information systems and impressive progress has been made with Computer Assisted Telephone Interviewing (CATI). Other innovations, such as SPRING, which aims to provide Bureau demographic analysts with the capability of interactive data analysis on minicomputers, are in the initial stages of development. Recommendations fall into five independent, but mutually beneficial categories. (1) The ADP Steering Committee be disbanded and replaced with The Technology Forum. (2) Establishment of a Technology Review Committee (TRC), to be composed of technology experts from outside the Bureau. (3) Designate technological gurus. These individuals will be the Bureau's experts in new and innovative technologies. (4) Adopt a technology innovation process. (5) Establish an Advanced Technology Studies Staff (ATSS) to promote technology transfer, obtain funding for technological innovation, manage innovation projects unable to find a home in other divisions, evaluate innovations that cut across Bureau organizational boundaries, and provide input into Bureau technology analyses. (JF)

Tonn, B.; Edwards, R.; Goeltz, R.; Hake, K.

1990-09-01

268

Digital system for structural dynamics simulation  

NASA Technical Reports Server (NTRS)

State-of-the-art digital hardware and software for the simulation of complex structural dynamic interactions, such as those which occur in rotating structures (engine systems). System were incorporated in a designed to use an array of processors in which the computation for each physical subelement or functional subsystem would be assigned to a single specific processor in the simulator. These node processors are microprogrammed bit-slice microcomputers which function autonomously and can communicate with each other and a central control minicomputer over parallel digital lines. Inter-processor nearest neighbor communications busses pass the constants which represent physical constraints and boundary conditions. The node processors are connected to the six nearest neighbor node processors to simulate the actual physical interface of real substructures. Computer generated finite element mesh and force models can be developed with the aid of the central control minicomputer. The control computer also oversees the animation of a graphics display system, disk-based mass storage along with the individual processing elements.

Krauter, A. I.; Lagace, L. J.; Wojnar, M. K.; Glor, C.

1982-01-01

269

Implementation of a personal-computer-based real-time hardware-in-the-loop U.S. Army aviation and missile command simulator  

NASA Astrophysics Data System (ADS)

With the rapid increase in computational power of the standard personal computer, many tasks that could only be performed by a mini-computer or mainframe can now be performed by the common personal computer. Ten years ago, computational and data transfer requirements for a real-time hardware-in-the-loop simulator could only be met by specialized high performance mini-computers. Today, personal computers shoulder the bulk of the computational load in the U.S. Army Aviation and Missile Command's Radio Frequency Simulation System, and one of the U.S. Army Aviation and Missile Command's millimeter wave simulation systems is currently undergoing a transition to personal computers. This paper discusses how personal computers have been used as the computational backbone for a real-time hardware-in-the-loop simulator, and some of the advantages and disadvantages of a PC based simulation. This paper also provides some general background on what the Radio Frequency Simulation System (RFSS) is and how it works, since the RFSS has successfully implemented a PC based real-time hardware-in-the-loop simulator.

Beck, David L.; Bennett, Robert G.

2002-07-01

270

JANE, A new information retrieval system for the Radiation Shielding Information Center  

SciTech Connect

A new information storage and retrieval system has been developed for the Radiation Shielding Information Center (RSIC) at Oak Ridge National Laboratory to replace mainframe systems that have become obsolete. The database contains citations and abstracts of literature which were selected by RSIC analysts and indexed with terms from a controlled vocabulary. The database, begun in 1963, has been maintained continuously since that time. The new system, called JANE, incorporates automatic indexing techniques and on-line retrieval using the RSIC Data General Eclipse MV/4000 minicomputer, Automatic indexing and retrieval techniques based on fuzzy-set theory allow the presentation of results in order of Retrieval Status Value. The fuzzy-set membership function depends on term frequency in the titles and abstracts and on Term Discrimination Values which indicate the resolving power of the individual terms. These values are determined by the Cover Coefficient method. The use of a commercial database base to store and retrieve the indexing information permits rapid retrieval of the stored documents. Comparisons of the new and presently-used systems for actual searches of the literature indicate that it is practical to replace the mainframe systems with a minicomputer system similar to the present version of JANE. 18 refs., 10 figs.

Trubey, D.K.

1991-05-01

271

Distributed information system (water fact sheet)  

USGS Publications Warehouse

During 1982-85, the Water Resources Division (WRD) of the U.S. Geological Survey (USGS) installed over 70 large minicomputers in offices across the country to support its mission in the science of hydrology. These computers are connected by a communications network that allows information to be shared among computers in each office. The computers and network together are known as the Distributed Information System (DIS). The computers are accessed through the use of more than 1500 terminals and minicomputers. The WRD has three fundamentally different needs for computing: data management; hydrologic analysis; and administration. Data management accounts for 50% of the computational workload of WRD because hydrologic data are collected in all 50 states, Puerto Rico, and the Pacific trust territories. Hydrologic analysis consists of 40% of the computational workload of WRD. Cost accounting, payroll, personnel records, and planning for WRD programs occupies an estimated 10% of the computer workload. The DIS communications network is shown on a map. (Lantz-PTT)

Harbaugh, A. W.

1986-01-01

272

The digital geologic map of Wyoming in ARC/INFO format  

USGS Publications Warehouse

This geologic map was prepared as part of a study of digital methods and techniques as applied to complex geologic maps. The geologic map was digitized from the original scribe sheets used to prepare the published Geologic Map of Wyoming (Love and Christiansen, 1985). Consequently, the digital version is at 1:500,000 scale using the Lambert Conformal Conic map projection parameters of the State base map. Stable base contact prints of the scribe sheets were scanned on a Tektronix 4991 digital scanner. The scanner automatically converts the scanned image to an ASCII vector format. These vectors were transferred to a VAX minicomputer, where they were then loaded into ARC/INFO. Each vector and polygon was given attributes derived from the original 1985 geologic map. Descriptors: The Digital Geologic Map of Wyoming in ARC/INFO Format Open-File Report 94-0425

Green, G. N.; Drouillard, P. H.

1994-01-01

273

Modern control techniques for accelerators  

SciTech Connect

Beginning in the mid to late sixties, most new accelerators were designed to include computer based control systems. Although each installation differed in detail, the technology of the sixties and early to mid seventies dictated an architecture that was essentially the same for the control systems of that era. A mini-computer was connected to the hardware and to a console. Two developments have changed the architecture of modern systems: (a) the microprocessor and (b) local area networks. This paper discusses these two developments and demonstrates their impact on control system design and implementation by way of describing a possible architecture for any size of accelerator. Both hardware and software aspects are included.

Goodwin, R.W.; Shea, M.F.

1984-05-01

274

Sound separation probes for flowing duct noise measurements. [jet engine diagnostics  

NASA Technical Reports Server (NTRS)

In order to understand the propagation of broadband sound from a device such as a jet engine, it is necessary to make fluctuating pressure measurements in the ducted airstream. However, in a flowing duct, fluctuating pressure energy can be due to both turbulence and sound travelling in the duct. By using the principal that sound waves and turbulent flow pressure perturbations travel at different velocities, a probe has been developed that provides the data necessary to separate the energy due to sound from that due to turbulence. A mini-computer based FFT analysis of the probe measurements provides the overall level of the broadband sound in the duct as well as the spectral distribution of the sound energy.

Moore, M. T.

1977-01-01

275

Development and implementation of a low cost micro computer system for LANDSAT analysis and geographic data base applications  

NASA Technical Reports Server (NTRS)

Since the implementation of the GRID and IMGRID computer programs for multivariate spatial analysis in the early 1970's, geographic data analysis subsequently moved from large computers to minicomputers and now to microcomputers with radical reduction in the costs associated with planning analyses. Programs designed to process LANDSAT data to be used as one element in a geographic data base were used once NIMGRID (new IMGRID), a raster oriented geographic information system, was implemented on the microcomputer. Programs for training field selection, supervised and unsupervised classification, and image enhancement were added. Enhancements to the color graphics capabilities of the microsystem allow display of three channels of LANDSAT data in color infrared format. The basic microcomputer hardware needed to perform NIMGRID and most LANDSAT analyses is listed as well as the software available for LANDSAT processing.

Faust, N.; Jordon, L.

1981-01-01

276

Spinal cord stimulators and radiotherapy: first case report and practice guidelines.  

PubMed

Spinal cord stimulators (SCS) are a well-recognised treatment modality in the management of a number of chronic neuropathic pain conditions, particularly failed back syndrome and radiculopathies. The implantable pulse generator (IPG) component of the SCS is designed and operates in a similar fashion to that of a cardiac pacemaker. The IPG consists of an electrical generator, lithium battery, transmitter/receiver and a minicomputer. When stimulated, it generates pulsed electrical signals which stimulate the dorsal columns of the spinal cord, thus alleviating pain. Analogous to a cardiac pacemaker, it can be potentially damaged by ionising radiation from a linear accelerator, in patients undergoing radiotherapy. Herein we report our clinical management of the first reported case of a patient requiring adjuvant breast radiotherapy who had a SCS in situ. We also provide useful practical recommendations on the management of this scenario within a radiation oncology department. PMID:22024340

Walsh, Lorraine; Guha, Daipayan; Purdie, Thomas G; Bedard, Philippe; Easson, Alexandra; Liu, Fei-Fei; Hodaie, Mojgan

2011-01-01

277

Auto covariance computer  

NASA Technical Reports Server (NTRS)

A laser velocimeter covariance processor which calculates the auto covariance and cross covariance functions for a turbulent flow field based on Poisson sampled measurements in time from a laser velocimeter is described. The device will process a block of data that is up to 4096 data points in length and return a 512 point covariance function with 48-bit resolution along with a 512 point histogram of the interarrival times which is used to normalize the covariance function. The device is designed to interface and be controlled by a minicomputer from which the data is received and the results returned. A typical 4096 point computation takes approximately 1.5 seconds to receive the data, compute the covariance function, and return the results to the computer.

Hepner, T. E.; Meyers, J. F. (inventors)

1985-01-01

278

Distributed processors and intelligent workstations at Los Alamos  

SciTech Connect

The Los Alamos National Laboratory is known for its interest in large-scale and scientific computation. However, since 1978, the Laboratory has developed distributed processing and is now developing a framework for support of microprocessor-based intelligent workstations. As practiced at Los Alamos, distributed processing means the distribution of minicomputers across a relatively large geographical area and the integration of them into a single network. Discussed in this paper are the motivations for the network, the communications technology used, some salient implementation factors, and advantages and disadvantages of distributed processing. Also discussed are the motivations for intelligent workstations, our categorization of workstations, the goals for each category, implementation plans, and some critical issues associated with them.

Buzbee, B.; Slocomb, C.

1983-01-01

279

MIDAS, prototype Multivariate Interactive Digital Analysis System, phase 1. Volume 3: Wiring diagrams  

NASA Technical Reports Server (NTRS)

The Midas System is a third-generation, fast, multispectral recognition system able to keep pace with the large quantity and high rates of data acquisition from present and projected sensors. A principal objective of the MIDAS Program is to provide a system well interfaced with the human operator and thus to obtain large overall reductions in turn-around time and significant gains in throughput. The hardware and software generated in Phase I of the overall program are described. The system contains a mini-computer to control the various high-speed processing elements in the data path and a classifier which implements an all-digital prototype multivariate-Gaussian maximum likelihood decision algorithm operating at 2 x 100,000 pixels/sec. Sufficient hardware was developed to perform signature extraction from computer-compatible tapes, compute classifier coefficients, control the classifier operation, and diagnose operation. The MIDAS construction and wiring diagrams are given.

Kriegler, F. J.; Christenson, D.; Gordon, M.; Kistler, R.; Lampert, S.; Marshall, R.; Mclaughlin, R.

1974-01-01

280

Binary chromatographic data and estimation of adsorbent porosities. [data for system n-heptane/n-pentane  

NASA Technical Reports Server (NTRS)

Data for the system n-pentane/n-heptane on porous Chromosorb-102 adsorbent were obtained at 150, 175, and 200 C for mixtures containing zero to 100% n-pentane by weight. Prior results showing limitations on superposition of pure component data to predict multicomponent chromatograms were verified. The thermodynamic parameter MR0 was found to be a linear function of sample composition. A nonporous adsorbent failed to separate the system because of large input sample dispersions. A proposed automated data processing scheme involving magnetic tape recording of the detector signals and processing by a minicomputer was rejected because of resolution limitations of the available a/d converters. Preliminary data on porosity and pore size distributions of the adsorbents were obtained.

Meisch, A. J.

1972-01-01

281

The microcomputer workstation - An alternate hardware architecture for remotely sensed image analysis  

NASA Technical Reports Server (NTRS)

Difficulties regarding the digital image analysis of remotely sensed imagery can arise in connection with the extensive calculations required. In the past, an expensive large to medium mainframe computer system was needed for performing these calculations. For image-processing applications smaller minicomputer-based systems are now used by many organizations. The costs for such systems are still in the range from $100K to $300K. Recently, as a result of new developments, the use of low-cost microcomputers for image processing and display systems appeared to have become feasible. These developments are related to the advent of the 16-bit microprocessor and the concept of the microcomputer workstation. Earlier 8-bit microcomputer-based image processing systems are briefly examined, and a computer workstation architecture is discussed. Attention is given to a microcomputer workstation developed by Stanford University, and the design and implementation of a workstation network.

Erickson, W. K.; Hofman, L. B.; Donovan, W. E.

1984-01-01

282

A Scanning laser-velocimeter technique for measuring two-dimensional wake-vortex velocity distributions. [Langley Vortex Research Facility  

NASA Technical Reports Server (NTRS)

A rapid scanning two dimensional laser velocimeter (LV) has been used to measure simultaneously the vortex vertical and axial velocity distributions in the Langley Vortex Research Facility. This system utilized a two dimensional Bragg cell for removing flow direction ambiguity by translating the optical frequency for each velocity component, which was separated by band-pass filters. A rotational scan mechanism provided an incremental rapid scan to compensate for the large displacement of the vortex with time. The data were processed with a digital counter and an on-line minicomputer. Vaporized kerosene (0.5 micron to 5 micron particle sizes) was used for flow visualization and LV scattering centers. The overall measured mean-velocity uncertainity is less than 2 percent. These measurements were obtained from ensemble averaging of individual realizations.

Gartrell, L. R.; Rhodes, D. B.

1980-01-01

283

Experiments on the electrostatic control of a flexible membrane and their relation to membrane-antenna figure control  

NASA Astrophysics Data System (ADS)

The stabilization of a noisy two-dimensional distributed-parameter system, with dynamics described by a hyperbolic partial differential equation, is described. The system was a meter-square flexible wire mesh, suspended vertically in tension by rigid boundaries, which supported transverse deflections about a planar equilibrium. These deflections were destabilized by the application of a transverse electrostatic bias; the number of open-loop-unstable deflection modes was adjustable with bias strength. Using information from nine capacitive deflection sensors, a minicomputer manipulated nine electrostatic deflection actuators so as to stabilize the mesh. Up to three open-loop-unstable modes were stabilized. The results of these experiments are encouraging to the design of electrostatically-figured membrane-reflector antennas, and this relation is discussed.

Lang, J. H.

1981-08-01

284

The Evolving Marriage of a Local Area Network (LAN) and a Hospital Information System (HIS)  

PubMed Central

Over the last eight years, a teleprocessing/database Hospital Information System (HIS) for the Medical College of Georgia hospital and clinics has evolved to include approximately 200 terminal functions, 100 cathode ray terminals (CRT's) and 25 printers running on an IBM 4341. Concurrent with this development, several specialized standalone departmental minicomputer systems have evolved in response to specific requirements. In early 1981, a networking concept was proposed whereby the various information management systems within the hospital and clinics could communicate with each other. This concept has been successfully applied to several systems including a Local Area Network (LAN) of 24 processors and 45 workstations. This paper will outline the evolution from a single host processor multiple terminal oriented HIS, to a communications network of computers, to the integration of the host terminal network and a flexible Local Area Network.

Harrison, Eugene T.; Pickren, John D.; Mangum, Patricia; Tomlins, Helen F.; Pickren, Ann S.

1983-01-01

285

Microcumpter computation of water quality discharges  

USGS Publications Warehouse

A fully prompted program (SEDQ) has been developed to calculate daily and instantaneous water quality (QW) discharges. It is written in a version of BASIC, and requires inputs of gage heights, discharge rating curve, shifts, and water quality concentration information. Concentration plots may be modified interactively using the display screen. Semi-logarithmic plots of concentration and water quality discharge are output to the display screen, and optionally to plotters. A summary table of data is also output. SEDQ could be a model program for micro and minicomputer systems likely to be in use within the Water Resources Division, USGS, in the near future. The daily discharge-weighted mean concentration is one output from SEDQ. It is defined in this report, differentiated from the currently used mean concentration, and designated the ' equivalent concentration. ' (USGS)

Helsel, Dennis R.

1983-01-01

286

The standard calibration instrument automation system for the atomic absorption spectrophotometer. Part 2: User's guide  

NASA Astrophysics Data System (ADS)

The user's guide to the atomic absorption instrument automation system is presented. This system receives lists of samples from the sample file control system and returns the measured concentrations to that system. It is capable of interfacing with a number of commercially available atomic absorption instruments. It incorporates the following major features: (1) multipoint calibration using first, second, or third degree regression or linear interpolation, (2) timely quality control assessments for spiked samples, duplicates, laboratory control standards, reagent blanks and instrument check standards, (3) reagent blank subtraction, and (4) plotting of calibration curves and raw data peaks. The programs of this system are written in data general extended BASIC, as enhanced for multiuser, real time data acquisition. They run in a data general Nova 840 minicomputer under the operating system RDOS. Detailed descriptions and examples of the features of the system are presented as they appear to the user.

1982-04-01

287

The standard calibration instrument automation system for the atomic absorption spectrophotometer. Part 3: Program documentation  

NASA Astrophysics Data System (ADS)

Complete documentation of the 15 programs and 11 data files of the EPA Atomic Absorption Instrument Automation System is presented. The system incorporates the following major features: (1) multipoint calibration using first, second, or third degree regression or linear interpolation, (2) timely quality control assessments for spiked samples, duplicates, laboratory control standards, reagent blanks, and instrument check standards, (3) reagent blank subtraction, and (4) plotting of calibration curves and raw data peaks. The programs of this system are written in Data General Extended BASIC, Revision 4.3, as enhanced for multi-user, real-time data acquisition. They run in a Data General Nova 840 minicomputer under the operating system RDOS, Revision 6.2. There is a functional description, a symbol definitions table, a functional flowchart, a program listing, and a symbol cross reference table for each program. The structure of every data file is also detailed.

Ryan, D. P.; Roth, G. S.

1982-04-01

288

Remote sensing information sciences research group: Browse in the EOS era  

NASA Technical Reports Server (NTRS)

The problem of science data browse was examined. Given the tremendous data volumes that are planned for future space missions, particularly the Earth Observing System in the late 1990's, the need for access to large spatial databases must be understood. Work was continued to refine the concept of data browse. Further, software was developed to provide a testbed of the concepts, both to locate possibly interesting data, as well as view a small portion of the data. Build II was placed on a minicomputer and a PC in the laboratory, and provided accounts for use in the testbed. Consideration of the testbed software as an element of in-house data management plans was begun.

Estes, John E.; Star, Jeffrey L.

1989-01-01

289

Total ozone determination by spectroradiometry in the middle ultraviolet.  

PubMed

A method has been developed to determine total ozone from multispectral measurements of the direct solar irradiance. The total ozone is determined by a least squares fit to the spectrum between 290 nm and 380 nm. The aerosol extinction is accounted for by expanding it in a power series in wavelength; use of the linear term proved adequate. A mobile laboratory incorporating a sky scanner has been developed and used to obtain data to verify the method. Sun tracking, wavelength setting of the double monochromator, and data acquisition are under control of a minicomputer. Results obtained at Wallops Island, Virginia, and Palestine, Texas, agree well with simultaneous Dobson and Canterbury spectrometer and balloon ECC ozonesonde values. The wavelength calibration of the monochromator and the values for the normalized ozone absorption are the most important factors in an accurate determination of total ozone. PMID:20208833

Garrison, L M; Doda, D D; Green, A E

1979-03-15

290

National transonic facility shakedown test results and calibration plans  

NASA Technical Reports Server (NTRS)

The results of the shakedown tests and the calibration plan of the National Transonic Facility (NTF) are presented. The facility is designed to operate in both air and nitrogen modes, cover Mach numbers from 0.2 to 1.2, pressures up to 8.8 atm and temperatures between 77 and 339 K. The facility data system is built around four 16-bit minicomputers with a total memory of three megabytes. A portable cryogenic chamber is available. The tunnel systems were operated in a series of tests in Mach number range of 0.2 to 1.17, pressures up to 8.5 atm, and temperatures down to 100 K. The calibration plan includes steady-state and dynamic calibration, as well as wall interference studies. The facility underwent the checkout of the model attitude, plenum isolation, and model access systems, followed by aerodynamic calibration in 1984. Schematic drawings and diagrams are included.

Bruce, W. E., Jr.; Fuller, D. E.; Igoe, W. B.

1984-01-01

291

TMAP4 User's Manual  

SciTech Connect

The Tritium Migration Analysis Program, Version 4 (TMAP4) has been developed by the Fusion Safety Program at the Idaho National Engineering Laboratory (INEL) as a safety analysis code, mainly to analyze tritium retention and loss in fusion reactor structures and systems during normal operation and accident conditions. TMAP4 incorporates one-dimensional thermal- and mass-diffusive transport and trapping calculations through structures and zero dimensional fluid transport between enclosures and across the interface between enclosures and structures. A key feature is the ability to input problem definition parameters as constants, interpolation tables, or FORTRAN equations. The code is specifically intended for use under a DOS operating system on PC-type mini-computers, but it has also been run successfully on workstations and mainframe computer systems. Use of the equation-input feature requires access to a FORTRAN-77 compiler and a linker program.

Longhurst, G.R.; Holland, D.F.; Jones, J.L.; Merrill, B.J.

1992-06-12

292

TMAP4 User`s Manual  

SciTech Connect

The Tritium Migration Analysis Program, Version 4 (TMAP4) has been developed by the Fusion Safety Program at the Idaho National Engineering Laboratory (INEL) as a safety analysis code, mainly to analyze tritium retention and loss in fusion reactor structures and systems during normal operation and accident conditions. TMAP4 incorporates one-dimensional thermal- and mass-diffusive transport and trapping calculations through structures and zero dimensional fluid transport between enclosures and across the interface between enclosures and structures. A key feature is the ability to input problem definition parameters as constants, interpolation tables, or FORTRAN equations. The code is specifically intended for use under a DOS operating system on PC-type mini-computers, but it has also been run successfully on workstations and mainframe computer systems. Use of the equation-input feature requires access to a FORTRAN-77 compiler and a linker program.

Longhurst, G.R.; Holland, D.F.; Jones, J.L.; Merrill, B.J.

1992-06-12

293

Clinical Protocol Information System  

PubMed Central

The Clinical Protocol Information System (CPIS) supports the clinical research and patient care objectives of the SouthEastern Cancer Study Group (SEG). The information system goals are to improve the evaluability of clinical trials, decrease the frequency of adverse patient events, implement drug toxicity surveillance, improve the availability of study data and demonstrate the criteria for computer networks that can impact on the general medical care of the community. Nodes in the network consist of Data General MicroNova MP-100 minicomputers that drive the interactive data dialogue and communicate with the network concentrator (another DG MicroNova) in Birmingham. Functions supported include: source data editing, care “advice,” care “audit,” care “explanation,” and treatment note printing. The complete database is updated nightly and resides on UAB's IBM 370/158-AP.

Wirtschafter, David D.; Gams, Richard; Ferguson, Carol; Blackwell, William; Boackle, Paul

1980-01-01

294

Computer program compatible with a laser nephelometer  

NASA Technical Reports Server (NTRS)

The laser nephelometer data system was updated to provide magnetic tape recording of data, and real time or near real time processing of data to provide particle size distribution and liquid water content. Digital circuits were provided to interface the laser nephelometer to a Data General Nova 1200 minicomputer. Communications are via a teletypewriter. A dual Linc Magnetic Tape System is used for program storage and data recording. Operational programs utilize the Data General Real-Time Operating System (RTOS) and the ERT AIRMAP Real-Time Operating System (ARTS). The programs provide for acquiring data from the laser nephelometer, acquiring data from auxiliary sources, keeping time, performing real time calculations, recording data and communicating with the teletypewriter.

Paroskie, R. M.; Blau, H. H., Jr.; Blinn, J. C., III

1975-01-01

295

Development of a multiplane multispeed balancing system for turbine systems  

NASA Technical Reports Server (NTRS)

A prototype high speed balancing system was developed for assembled gas turbine engine modules. The system permits fully assembled gas turbine modules to be operated and balanced at selected speeds up to full turbine speed. The balancing system is a complete stand-alone system providing all necesary lubrication and support hardware for full speed operation. A variable speed motor provides the drive power. A drive belt and gearbox provide rotational speeds up to 21,000 rpm inside a vacuum chamber. The heart of the system is a dedicated minicomputer with attendant data acquisition, storage and I/O devices. The computer is programmed to be completely interactive with the operator. The system was installed at CCAD and evaluated by testing 20 T55 power turbines and 20 T53 power turbines. Engine test results verified the performance of the high speed balanced turbines.

Martin, M. R.

1984-01-01

296

The Evolution of a Computerized Medical Information System  

PubMed Central

This paper presents the eighteen year history leading to the development of a computerized medical information system and discusses the factors which influenced its philosophy, design and implementation. This system, now called TMR, began as a single-user, tape-oriented minicomputer package and now exists as a multi-user, multi-database, multi-computer system capable of supporting a full range of users in both the inpatient and outpatient settings. The paper discusses why we did what we did, what worked, and what didn't work. Current projects are emphasized including networking and the integration of inpatient and outpatient functions into a single system. A theme of the paper is how hardware and software technological advancements, increasing sophistication of our users, our increasing experience, and just plain luck contributed to the success of TMR.

Hammond, W. Ed; Stead, W. W.

1986-01-01

297

ANNIE - INTERACTIVE PROCESSING OF DATA BASES FOR HYDROLOGIC MODELS.  

USGS Publications Warehouse

ANNIE is a data storage and retrieval system that was developed to reduce the time and effort required to calibrate, verify, and apply watershed models that continuously simulate water quantity and quality. Watershed models have three categories of input: parameters to describe segments of a drainage area, linkage of the segments, and time-series data. Additional goals for ANNIE include the development of software that is easily implemented on minicomputers and some microcomputers and software that has no special requirements for interactive display terminals. Another goal is for the user interaction to be based on the experience of the user so that ANNIE is helpful to the inexperienced user and yet efficient and brief for the experienced user. Finally, the code should be designed so that additional hydrologic models can easily be added to ANNIE.

Lumb, Alan, M.; Kittle, John, L.

1985-01-01

298

Automated thermal conductivity probe, and applications to powders  

SciTech Connect

A thermal conductivity probe has been developed for measurements of powders and porous media from ambient temperature to 1300 K in vacuum or an inert gas atmosphere. Automated data acquisition and graphical analysis programs have been developed in FORTRAN for use with a laboratory mini-computer. Nonlinear data analysis techniques are available which can account for the thermal probe response due to contact resistance and probe thermal mass effects. Programs have also been developed with thermal BASIC for use with a small, portable desktop computer system. Examples of the use of the probe and data acquisition and analysis system are shown for measurement of the effective thermal conductivity of ceramic and metal powders.

Drotning, W D

1983-01-01

299

Berkeley automated supernova search  

SciTech Connect

The Berkeley automated supernova search employs a computer controlled 36-inch telescope and charge coupled device (CCD) detector to image 2500 galaxies per night. A dedicated minicomputer compares each galaxy image with stored reference data to identify supernovae in real time. The threshold for detection is m/sub v/ = 18.8. We plan to monitor roughly 500 galaxies in Virgo and closer every night, and an additional 6000 galaxies out to 70 Mpc on a three night cycle. This should yield very early detection of several supernovae per year for detailed study, and reliable premaximum detection of roughly 100 supernovae per year for statistical studies. The search should be operational in mid-1982.

Kare, J.T.; Pennypacker, C.R.; Muller, R.A.; Mast, T.S.; Crawford, F.S.; Burns, M.S.

1981-01-01

300

Spatial imaging detector system for pulsed plasma extreme ultraviolet diagnostics  

NASA Astrophysics Data System (ADS)

A spectroscopic instrumentation system is described which forms one-dimensional monochromatic EUV images of pulsed plasma sources. The system uses a small monochromator and a 22 anode microchannel plate detector to simultaneously view 22 chords of the plasma at the wavelength of a given impurity emission with 100 microsec resolution. Brightness profiles are measured and stored in a minicomputer at up to 400 time points during a single discharge. If the discharge is cylindrically symmetric, this data can be Abel-inverted directly to produce the volume emission rates and impurity density profiles during the discharge. The design, construction, and testing of the system are described, as well as its performance on the Alcator A tokamak.

Richards, R. K.; Moos, H. W.; Allen, S. L.

1980-01-01

301

Field implementation of an emergency assessment system  

SciTech Connect

A computerized Emergency Assessment and Response System (EARS) was developed as a means to characterize and evaluate the offsite radiological consequences of potential accidents at the Diablo Canyon Power Plant (DCPP). The system consists of a central computer at the Technical Support Center, provisions for live-time collection of meteorological and monitor data, and a distributed network of minicomputer display stations at selected plant and offsite locations. During use in two full-scale emergency exercises at DCPP, the system demonstrated the capability to collect information, perform dose projections, and communicate the information effectively to remote participants. Problems observed during the first exercise, such as slowness in defining release rate terms and unavailability of certain data as needed by participants, were corrected prior to the second exercise. EARS is now a proven, integral part of the emergency response capabilities of DCPP, and is being extended for routine use in training, meteorological data processing, and gaseous effluent control programs.

Walker, D.M.; Hearn, R.A.; Mak, M.W.; Serpa, D.P.; Shih, C.C.

1983-02-01

302

Automatic continuum analysis of reflectance spectra  

NASA Technical Reports Server (NTRS)

A continuum algorithm based on a Segmented Upper Hull method (SUH) is described. An upper hull is performed on segments of a spectrum defined by local minima and maxima. The segments making a complete spectrum are then combined. The definition of the upper hull allows the continuum to be both concave and/or convex, adapting to the shape of the spectrum. The method performs multiple passes on a spectrum by segmenting each local maximum to minimum and performing an upper hull. The algorithm naturally adapts to the widths of absorption features, so that all features are found, including the nature of doublets, triplets, etc. The algorithm is also reasonably fast on common minicomputers so that it might be applied to the large data sets from imaging spectrometers.

Clark, Roger N.; King, Trude V. V.

1987-01-01

303

Modularized instrument system for turbojet engine test facilities  

NASA Technical Reports Server (NTRS)

A modular instrument system is being developed to handle the many data channels encountered in turbojet engine testing. Each module contains a group of transducers and all the signal conditioning multiplexing, and digitizing electronics necessary for direct interface with a digital computer. The digital interface within each module is the same for all modules; in addition, each module provides a controlled environment for its contents. A minicomputer in the control room gathers the data, performs on-line calculation and display, and interfaces with a shared recording and computing system. The advantages of this system are: (1) reduced manpower for system installation, setup, and checkout; (2) standardized equipment interfaces; (3) increased reliability through automatic system testing and minimization of manual adjustments; and (4) reduced cost through minimization of wiring and simplification of control room display.

Nieberding, W. C.; Englund, D. R., Jr.

1972-01-01

304

The experimental computer control of a two-dimensional hyperbolic system  

NASA Technical Reports Server (NTRS)

The experimental computer control of a two-dimensional hyperbolic system is described. The system consists of a 5-foot gold-coated rubber membrane mounted on a circular cylindrical drum. Seven electrodes reside on a command surface located behind the membrane inside the drum. These electrodes served as capacitive sensors and electrostatic force actuators of transverse membrane deflection. The membrane was modelled as flat, isotropic and uniformly tensioned. Transverse membrane deflections were expanded in normal modes. Controllers regulating membrane deflection are designed using aggregation and design procedures based upon sensor and actuator influence functions. The resulting control laws are implemented on a minicomputer in two sets of experiments. The experimental study confirms the theoretically predicted behavior of the system, usefulness of the aggregation and design procedures, and the expectation that spillover can be made a beneficial source of damping in residual systems.

Yam, Y.; Lang, J. H.; Staelin, D. H.; Johnson, T. L.

1985-01-01

305

Computer software for converting ground-water and water-quality data from the national water information system for use in a geographic information system  

SciTech Connect

A geographic information system (GIS) is computing software that provides capabilities to display and analyze spatially referenced data. To use a GIS efficiently, software is needed that provides a link between existing spatially referenced database systems and the GIS. The US Geological Survey (USGS) stores large amounts of spatially referenced hydrologic data in computerized database systems. Currently, these database systems are physically located on minicomputers that are installed in many USGS offices nationwide. This report describes software that can be used quickly and easily to convert site description and water quality data from these database systems to the GIS that is used by the USGS. The software described in this report is designed to be used with the same hardware and software that is available to most USGS personnel.

Scott, J.C. (Geological Survey, Oklahoma City, OK (United States))

1990-01-01

306

Cost effective development of a Shuttle-based astronomical instrument control system  

NASA Technical Reports Server (NTRS)

The high level language FORTH is used for the electronic control of the Space Shuttle-based Ultraviolet Imaging Telescope, in a flight computer system which minimizes costs. The greater part of the breadboard version of the flight computer is assembled from commercially available components, reducing novel circuit design features and permitting simultaneous development of both hardware and software. The commercial boards are then refabricated on aluminum core heat conducting stock, using high reliability parts to produce the flight versions of the system. The system's ground support equipment employs a MINC-25 minicomputer which performs such functions as flight computer software development, PROM programming, test and integration support, and flight operations support. The implementation of these concepts in flight computer telescope controls is described.

Parise, R. A.; Blum, A.; Budney, T. J.; Stone, R. W.

1982-01-01

307

Laboratory data manipulation tools basic data handling programs. Volume 2: Detailed software/hardware documentation  

NASA Technical Reports Server (NTRS)

The set of computer programs described allows for data definition, data input, and data transfer between the LSI-11 microcomputers and the VAX-11/780 minicomputer. Program VAXCOM allows for a simple method of textual file transfer from the LSI to the VAX. Program LSICOM allows for easy file transfer from the VAX to the LSI. Program TTY changes the LSI-11 operators console to the LSI's printing device. Program DICTIN provides a means for defining a data set for input to either computer. Program DATAIN is a simple to operate data entry program which is capable of building data files on either machine. Program LEDITV is an extremely powerful, easy to use, line oriented text editor. Program COPYSBF is designed to print out textual files on the line printer without character loss from FORTRAN carriage control or wide record transfer.

1981-01-01

308

East Ohio Gas users benefit from its new SCADA system  

SciTech Connect

Delivering over 280 billion cubic feet of natural gas per year through some 17,800 miles of pipeline, the vast grid of the East Ohio Gas Co. (EOG), Cleveland, requires constant monitoring and control to properly serve 1.1 million customers. The supervisory control and data acquisition (SCADA) system used by EOG has a series of instruments located at strategic intervals along the pipeline. These instruments monitor temperature, pressure, flow, odorization, compressor status, and alarms. Linked to the instruments are a series of 85 remote terminal units (RTUs) that are polled every 15 secs. for data. These RTUs also control the valves and compressors that deliver natural gas. These, in turn, are linked by radio to a series of minicomputer hosts. To revamp its system, EOG needed both new hardware and application software. This paper reviews the decision making process for selecting both hardware and software systems and the resulting performance.

NONE

1996-02-01

309

Telemetry Computer System at Wallops Flight Center  

NASA Technical Reports Server (NTRS)

This paper describes the Telemetry Computer System in operation at NASA's Wallops Flight Center for real-time or off-line processing, storage, and display of telemetry data from rockets and aircraft. The system accepts one or two PCM data streams and one FM multiplex, converting each type of data into computer format and merging time-of-day information. A data compressor merges the active streams, and removes redundant data if desired. Dual minicomputers process data for display, while storing information on computer tape for further processing. Real-time displays are located at the station, at the rocket launch control center, and in the aircraft control tower. The system is set up and run by standard telemetry software under control of engineers and technicians. Expansion capability is built into the system to take care of possible future requirements.

Bell, H.; Strock, J.

1980-01-01

310

A transputer based finite element solver  

NASA Technical Reports Server (NTRS)

The feasibility of performing FEM structural-mechanics analyses on transputer systems is investigated experimentally. Transputers are programmable microprocessors equipped with local memory and point-to-point communication links; they can be joined in a large concurrent system via a programming language which supports distributed processing; this permits parallel processing at relatively low hardware cost. The computational tasks required by FEM programs are reviewed; the hardware (one PC, one master transputer, and 12 slave transputers) employed in the test calculations is described; and results demonstrating the speed and efficiency of the transputer array in assembling a global stiffness matrix and performing Gauss-Jordan matrix inversion are presented in graphs. It is predicted that larger transputer networks could approach the power of supercomputers at minicomputer costs.

Favenesi, J. A.; Danial, A. N.; Bower, M. V.

1987-01-01

311

The orphee versatile low-cost multiprocessor system for data acquisition and control of neutron spectrometers  

SciTech Connect

This paper describes the new data acquisition and control system of the neutron scattering instruments at the ORPHEE research reactor. The existing system has undergone a complete change: the original CAMAC system and minicomputer controlling each experiment have given way to commercial CPU boards and microcomputers like the IBM-PC. The communication links between these two components are the IEEE 488 or RS232 standards. Emphasis is placed on the flexibility and modular nature of such a system which makes a maximum use of commercial products thus guaranteeing reliability and ease of use. A study of the requirements and evolutions, technical as well as philosophical, is detailed to demonstrate the motivation of the choice of the system architecture. A survey of the various hardware and software achievements and finally an overview of future improvements is given.

Koskas, G.

1988-02-01

312

Supervisory control and diagnostics system for the mirror fusion test facility: overview and status 1980  

SciTech Connect

The Mirror Fusion Test Facility (MFTF) is a complex facility requiring a highly-computerized Supervisory Control and Diagnostics System (SCDS) to monitor and provide control over ten subsystems; three of which require true process control. SCDS will provide physicists with a method of studying machine and plasma behavior by acquiring and processing up to four megabytes of plasma diagnostic information every five minutes. A high degree of availability and throughput is provided by a distributed computer system (nine 32-bit minicomputers on shared memory). Data, distributed across SCDS, is managed by a high-bandwidth Distributed Database Management System. The MFTF operators' control room consoles use color television monitors with touch sensitive screens; this is a totally new approach. The method of handling deviations to normal machine operation and how the operator should be notified and assisted in the resolution of problems has been studied and a system designed.

McGoldrick, P.R.

1981-01-01

313

Does man always close the loop in trying to pilot a large ship?  

NASA Technical Reports Server (NTRS)

Control of a slowly responding complex dynamic system such as a large supertanker poses special problems for the human. Experienced ship's crew members maneuvered a simulated ship in real time. The simulation was performed using a graphics display run by a DPD 11/40 minicomputer. The maneuvers consisted of piloting a large ship along a narrow waterway. Preliminary results suggest that the human operates as a feedforward controller utilizing the preview information for 'gross changes' in heading, and as a feedback controller for correcting small deviations. The instruments displayed on the deck do not seem to be helpful in all situations. In fact, evidence seems to indicate that some of the displays might even interfere with the pilot's attempt to form a good internal model.

Arnott, D. R.; Govindaraj, T.

1982-01-01

314

Space- and time-resolving spectrograph for high-temperature plasma diagnostics  

SciTech Connect

Construction of an EUV (60 --370 A-circle) space- and time-resolving, grazing incidence spectrograph (STRS) is described. The simultaneous spectral coverage of the instrument ranges from 40 to 75 A-circle, depending on the wavelength region. The spectral resolution is about 1 A-circle. The spatial resolution, accomplished by using the pinhole camera effect and the inherent astigmatism of a concave grating in grazing incidence, is about 2 cm, with a total field of view of 60 cm at a distance of 2 m from the plasma. The detector consists of a 75-mm MCP image intensifier optically coupled to three CCD area array detectors. Time resolution of up to 2 ms is achieved with high-speed readout electronics. A PDP 11/73 minicomputer controls the spectrograph and collects and reduces 3.0 Mbyte of data per shot.

Content, D.; Wro-acute-accentblewski, D.; Perry, M.; Moos, H.W.

1986-08-01

315

Composite structural materials. [aircraft structures  

NASA Technical Reports Server (NTRS)

The use of filamentary composite materials in the design and construction of primary aircraft structures is considered with emphasis on efforts to develop advanced technology in the areas of physical properties, structural concepts and analysis, manufacturing, and reliability and life prediction. The redesign of a main spar/rib region on the Boeing 727 elevator near its actuator attachment point is discussed. A composite fabrication and test facility is described as well as the use of minicomputers for computer aided design. Other topics covered include (1) advanced structural analysis methids for composites; (2) ultrasonic nondestructive testing of composite structures; (3) optimum combination of hardeners in the cure of epoxy; (4) fatigue in composite materials; (5) resin matrix characterization and properties; (6) postbuckling analysis of curved laminate composite panels; and (7) acoustic emission testing of composite tensile specimens.

Ansell, G. S.; Loewy, R. G.; Wiberley, S. E.

1980-01-01

316

Radar targets reveal all to automated tester  

NASA Astrophysics Data System (ADS)

Technological developments in the field of automated test equipment for low radar-cross-section (RCS) systems are reviewed. Emphasis is given to an Automated Digital Analysis and Measurement (ADAM) system for measuring, scattering, and evaluating RCS using a minicomputer in combination with a vector network analyzer and a positioner programmer. ADAM incorporates a stepped CW measurement technique to obtain RCS as a function of both range and frequency at a fixed aspect angle. The operating characteristics and calibration procedures of the ADAM system are described and estimates of RCS sensitivity are obtained. The response resolution of the ADAM system is estimated to be 36 cm per measurement bandwidth (in GHz) for a minimum window. A block diagram of the error checking routine of the ADAM system is provided.

Hartman, R. E.

1985-09-01

317

Computer code to interchange CDS and wave-drag geometry formats  

NASA Technical Reports Server (NTRS)

A computer program has been developed on the PRIME minicomputer to provide an interface for the passage of aircraft configuration geometry data between the Rockwell Configuration Development System (CDS) and a wireframe geometry format used by aerodynamic design and analysis codes. The interface program allows aircraft geometry which has been developed in CDS to be directly converted to the wireframe geometry format for analysis. Geometry which has been modified in the analysis codes can be transformed back to a CDS geometry file and examined for physical viability. Previously created wireframe geometry files may also be converted into CDS geometry files. The program provides a useful link between a geometry creation and manipulation code and analysis codes by providing rapid and accurate geometry conversion.

Johnson, V. S.; Turnock, D. L.

1986-01-01

318

Investigation of creep by use of closed loop servo-hydraulic test system  

NASA Technical Reports Server (NTRS)

Creep tests were conducted by means of a closed loop servo-controlled materials test system. These tests are different from the conventional creep tests in that the strain history prior to creep may be carefully monitored. Tests were performed for aluminum alloy 6061-0 at 150 C and monitored by a PDP 11/04 minicomputer at a preset constant plastic-strain rate prehistory. The results show that the plastic-strain rate prior to creep plays a significant role in creep behavior. The endochronic theory of viscoplasticity was applied to describe the observed creep curves. The concepts of intrinsic time and strain rate sensitivity function are employed and modified according to the present observation.

Wu, H. C.; Yao, J. C.

1981-01-01

319

Thermal systems analysis for the Space Infrared Telescope Facility dewar  

NASA Technical Reports Server (NTRS)

Thermal systems analysis models were used to design SFHe cooled dewar for the Space Infrared Telescope Facility (SIRTF), a 1 m class cryogenically cooled observatory for IR astronomy. The models are capable of computing both the heat leaks into the dewar and the operating temperature of a SFHe tank. The models are aimed at predicting the ability of the SIRTF cryogenic system to satisfy a five-year mission lifetime requirement and maintain the SFHe tank operating temperature of 1.25 K to provide sufficient cooling for science instruments and the optical system. The thermal models are very detailed and very fast with a typical steady state run of about 20 sec on a VAX minicomputer.

Bhandari, Pradeep; Petrick, S. W.; Schember, Helene

1991-01-01

320

A Computer System for Processing Tumor Registry Data  

PubMed Central

An interactive computer system for processing tumor registry data has been developed by the Washington, D.C. VA Medical Center Systems Development Group. The automated registry system replaces a manual registry, which had been implemented according to the guidelines established for Cancer Programs by the American College of Surgeons. A permanent on-line data base of patient data is maintained by a minicomputer at the medical center. A user oriented application program provides entry, edit, and retrieval of patient data in the following formats - Suspense, Master, Accession, and Follow-up registers, and in Abstract form. Data entered in any of the formats is stored in a common file, and is available as needed in any other format. The programs were written in the standard Mumps Language. Construction of the Tumor Registry application was greatly assisted by use of the File Manager, a data base file management package written in the standard Mumps language.

Leahey, Charles F.

1981-01-01

321

High-performance control system for a heavy-ion medical accelerator  

SciTech Connect

A high performance control system is being designed as part of a heavy ion medical accelerator. The accelerator will be a synchrotron dedicated to clinical and other biomedical uses of heavy ions, and it will deliver fully stripped ions at energies up to 800 MeV/nucleon. A key element in the design of an accelerator which will operate in a hospital environment is to provide a high performance control system. This control system will provide accelerator modeling to facilitate changes in operating mode, provide automatic beam tuning to simplify accelerator operations, and provide diagnostics to enhance reliability. The control system being designed utilizes many microcomputers operating in parallel to collect and transmit data; complex numerical computations are performed by a powerful minicomputer. In order to provide the maximum operational flexibility, the Medical Accelerator control system will be capable of dealing with pulse-to-pulse changes in beam energy and ion species.

Lancaster, H.D.; Magyary, S.B.; Sah, R.C.

1983-03-01

322

Systems used to automate medical libraries--analysis by type of library.  

PubMed

Analysis of data recorded in 626 questionnaires on systems used to automate medical libraries by type of library showed that academic and industrial libraries automated all serial and book functions to a greater degree that the other types of medical libraries (hospital, governmental, institutional and medical centre). Almost 75% of the academic libraries had automated some or all serial functions; 80% had automated some or all book functions. Half of the hospital, institutional and medical centre libraries (50-51%) performed all serial functions manually; 29-40% performed all book functions manually. No software was used consistently by all types of libraries to process serials or books. Mainframe or minicomputers were used more by academic libraries to process serials and books than personal computers. PMID:10151524

Miido, H

1995-06-01

323

Automation in photogrammetry: Recent developments and applications (1972-1976)  

USGS Publications Warehouse

An overview of recent developments in the automation of photogrammetry in various countries is presented. Conclusions regarding automated photogrammetry reached at the 1972 Congress in Ottawa are reviewed first as a background for examining the developments of 1972-1976. Applications are described for each country reporting significant developments. Among fifteen conclusions listed are statements concerning: the widespread practice of equipping existing stereoplotters with simple digitizers; the growing tendency to use minicomputers on-line with stereoplotters; the optimization of production of digital terrain models by progressive sampling in stereomodels; the potential of digitization of a photogrammetric model by density correlation on epipolar lines; the capabilities and economic aspects of advanced systems which permit simultaneous production of orthophotos, contours, and digital terrain models; the economy of off-line orthophoto systems; applications of digital image processing; automation by optical techniques; applications of sensors other than photographic imagery, and the role of photogrammetric phases in a completely automated cartographic system. ?? 1976.

Thompson, M. M.; Mikhail, E. M.

1976-01-01

324

An on-line computer system for monitoring respiratory and cardiac functions of patients.  

PubMed

A computer-based noninvasive and continuous patient monitoring system for breath-by-breath assessment of cardiorespiratory functions was developed. Transthoracic impedance changes caused by respiratory and cardiac activities were measured with separate impedance plethysmographs of different frequencies. A mini-computer system calculated on-line eight respiratory parameters (VT, f, VE, PETO2, PETCO2, VO2, VCO2, and R) in cooperation with expired gas analysis data from a mass-spectrometer, and three cardiac parameters (SV, HR and Q). These parameters were displayed simultaneously at the end of each breath. In order to improve the signal-to-noise ratio of the impedance cardiogram to a level allowing computer determination, an ensemble averaging technique was utilized. The computer-derived cardiorespiratory parameters obtained during voluntary hyperventilation and a passive tilt demonstrated reasonable changes. PMID:6809072

Nakamura, T; Miyamoto, Y; Sakakibara, K; Tamura, T; Takahashi, M; Hiura, T; Mikami, T

1982-01-01

325

A report on the ST ScI optical disk workstation  

NASA Technical Reports Server (NTRS)

The STScI optical disk project was designed to explore the options, opportunities and problems presented by the optical disk technology, and to see if optical disks are a viable, and inexpensive, means of storing the large amount of data which are found in astronomical digital imagery. A separate workstation was purchased on which the development can be done and serves as an astronomical image processing computer, incorporating the optical disks into the solution of standard image processing tasks. It is indicated that small workstations can be powerful tools for image processing, and that astronomical image processing may be more conveniently and cost-effectively performed on microcomputers than on the mainframe and super-minicomputers. The optical disks provide unique capabilities in data storage.

1985-01-01

326

Data reduction programs for a laser radar system  

NASA Technical Reports Server (NTRS)

The listing and description of software routines which were used to analyze the analog data obtained from LIDAR - system are given. All routines are written in FORTRAN - IV on a HP - 1000/F minicomputer which serves as the heart of the data acquisition system for the LIDAR program. This particular system has 128 kilobytes of highspeed memory and is equipped with a Vector Instruction Set (VIS) firmware package, which is used in all the routines, to handle quick execution of different long loops. The system handles floating point arithmetic in hardware in order to enhance the speed of execution. This computer is a 2177 C/F series version of HP - 1000 RTE-IVB data acquisition computer system which is designed for real time data capture/analysis and disk/tape mass storage environment.

Badavi, F. F.; Copeland, G. E.

1984-01-01

327

The Lockheed alternate partial polarizer universal filter  

NASA Technical Reports Server (NTRS)

A tunable birefringent filter using an alternate partial polarizer design has been built. The filter has a transmission of 38% in polarized light. Its full width at half maximum is .09A at 5500A. It is tunable from 4500 to 8500A by means of stepping motor actuated rotating half wave plates and polarizers. Wave length commands and thermal compensation commands are generated by a PPD 11/10 minicomputer. The alternate partial polarizer universal filter is compared with the universal birefringent filter and the design techniques, construction methods, and filter performance are discussed in some detail. Based on the experience of this filter some conclusions regarding the future of birefringent filters are elaborated.

Title, A. M.

1976-01-01

328

FINDS: A fault inferring nonlinear detection system. User's guide  

NASA Technical Reports Server (NTRS)

The computer program FINDS is written in FORTRAN-77, and is intended for operation on a VAX 11-780 or 11-750 super minicomputer, using the VMS operating system. The program detects, isolates, and compensates for failures in navigation aid instruments and onboard flight control and navigation sensors of a Terminal Configured Vehicle aircraft in a Microwave Landing System environment. In addition, FINDS provides sensor fault tolerant estimates for the aircraft states which are then used by an automatic guidance and control system to land the aircraft along a prescribed path. FINDS monitors for failures by evaluating all sensor outputs simultaneously using the nonlinear analytic relationships between the various sensor outputs arising from the aircraft point mass equations of motion. Hence, FINDS is an integrated sensor failure detection and isolation system.

Lancraft, R. E.; Caglayan, A. K.

1983-01-01

329

Brookhaven fastbus/unibus interface  

SciTech Connect

A typical high energy physics experiment requires both a high speed data acquisition and processing system, for data collection and reduction; and a general purpose computer to handle further reduction, bookkeeping and mass storage. Broad differences in architecture, format or technology, will often exist between these two systems, and interface design can become a formidable task. The PDP-11 series minicomputer is widely used in physics research, and the Brookhaven FASTBUS is the only standard high speed data acquisition system which is fully implemented in a current high energy physics experiment. This paper will describe the design and operation of an interface between these two systems. The major issues are elucidated by a preliminary discussion on the basic principles of Bus Systems, and their application to Brookhaven FASTBUS and UNIBUS.

Benenson, G.; Bauernfeind, J.; Larsen, R.C.; Leipuner, L.B.; Morse, W.M.; Adair, R.K.; Black, J.K.; Campbell, S.R.; Kasha, H.; Schmidt, M.P.

1983-01-01

330

Evolution and Integration of Medical Laboratory Information System in an Asia National Medical Center  

NASA Astrophysics Data System (ADS)

This work elucidates the evolution of three generations of the laboratory information system in the National Taiwan University Hospital, which were respectively implemented in an IBM Series/1 mini-computer, a client/server and a plug-and-play HL7 interface engine environment respectively. The experience of using the HL7 healthcare information exchange in the hospital information system, laboratory information system, and automatic medical instruments over the past two decades are illustrated and discussed. The latest design challenge in developing intelligent laboratory information services is to organize effectively distributed and heterogeneous medical instruments through the message gateways. Such experiences had spread to some governmental information systems for different purposes in Taiwan; besides, the healthcare information exchange standard, software reuse mechanism, and application service provider adopted in developing the plug-and-play laboratory information system are also illustrated.

Cheng, Po-Hsun; Chen, Sao-Jie; Lai, Jin-Shin

331

Computerized data acquisition and analysis for measuring thermal diffusivity. [in thermoelectric space applications materials  

NASA Technical Reports Server (NTRS)

JPL has been leading a concentrated effort to develop improved thermoelectric materials for space applications. Thermoelectric generators are an attractive source of electrical energy for space power because of lack of moving parts and slow degradation of performance. Thermoelectric material is characterized by: Seebeck coefficient, electrical resistivity and thermal conductivity. To measure the high temperature thermal conductivity is experimentally very difficult. However, it can be calculated from the specific heat and thermal diffusivity which are easier to measure at high temperatures, especially using the flash method. Data acquisition and analysis for this experiment were automated at JPL using inexpensive microcomputer equipment. This approach is superior to tedious and less accurate manual analysis of data. It is also preferred to previously developed systems utilizing expensive minicomputers or mainframes.

Chmielewski, A.; Wood, C.; Vandersande, J.

1985-01-01

332

Advanced application flight experiment breadboard pulse compression radar altimeter program  

NASA Technical Reports Server (NTRS)

Design, development and performance of the pulse compression radar altimeter is described. The high resolution breadboard system is designed to operate from an aircraft at 10 Kft above the ocean and to accurately measure altitude, sea wave height and sea reflectivity. The minicomputer controlled Ku band system provides six basic variables and an extensive digital recording capability for experimentation purposes. Signal bandwidths of 360 MHz are obtained using a reflective array compression line. Stretch processing is used to achieve 1000:1 pulse compression. The system range command LSB is 0.62 ns or 9.25 cm. A second order altitude tracker, aided by accelerometer inputs is implemented in the system software. During flight tests the system demonstrated an altitude resolution capability of 2.1 cm and sea wave height estimation accuracy of 10%. The altitude measurement performance exceeds that of the Skylab and GEOS-C predecessors by approximately an order of magnitude.

1976-01-01

333

University of Missouri-Rolla cloud simulation facility - Proto II chamber  

NASA Technical Reports Server (NTRS)

The design and supporting systems for the cooled-wall expansion cloud chamber, designated Proto II, are described. The chamber is a 10-sided vertical cylinder designed to be operated with interior wall temperatures between +40 and -40 C, and is to be utilized to study microphysical processes active in atmospheric clouds and fogs. Temperatures are measured using transistor thermometers which have a range of + or - 50 C and a resolution of about + or - 0.001 C; and pressures are measured in the chamber by a differential strain gauge pressure transducer. The methods used for temperature and pressure control are discussed. Consideration is given to the chamber windows, optical table, photographic/video, optical attenuation, Mie scattering, and the scanning system for the chamber. The system's minicomputer and humidifier, sample preparation, and chamber flushing are examined.

White, Daniel R.; Carstens, John C.; Hagen, Donald E.; Schmitt, John L.; Kassner, James L.

1987-01-01

334

Total ozone determination by spectroradiometry in the middle ultraviolet  

NASA Technical Reports Server (NTRS)

A method has been developed to determine total ozone from multispectral measurements of the direct solar irradiance. The total ozone is determined by a least squares fit to the spectrum between 290 nm and 380 nm. The aerosol extinction is accounted for by expanding it in a power series in wavelength; use of the linear term proved adequate. A mobile laboratory incorporating a sky scanner has been developed and used to obtain data to verify the method. Sun tracking, wavelength setting of the double monochromator, and data acquisition are under control of a minicomputer. Results obtained at Wallops Island, Virginia, and Palestine, Texas, agree well with simultaneous Dobson and Canterbury spectrometer and balloon ECC ozonesonde values. The wavelength calibration of the monochromator and the values for the normalized ozone absorption are the most important factors in an accurate determination of total ozone.

Garrison, L. M.; Doda, D. D.; Green, A. E. S.

1979-01-01

335

Transient response of a turbulent boundary layer  

NASA Technical Reports Server (NTRS)

A unique feature of the present ensemble-averaged measurements of a turbulent boundary layer's transient response to a spontaneous change in the free stream velocity distribution, is that the test boundary layer is a standard, steady, flat plate turbulent boundary layer at the entrance to the unsteady region, and is then subjected to sudden changes in free stream velocity distribution in the test section. These water tunnel tests were controlled by minicomputer. It is noted that the boundary layer development was relatively slow, with a characteristic time that was greater than the free stream time-of-flight by a factor of as much as 3. Response varied dramatically across the boundary layer, and the evolution of the turbulent stress field occurred on the same time scale as that of the ensemble-averaged velocity field.

Parikh, P. G.; Jayaraman, R.; Reynolds, W. C.; Carr, L. W.

1983-01-01

336

Computer Generated Anesthesia Records  

PubMed Central

This paper describes a distributed computer system for generation of anesthesia records during surgery. The system is made up of a minicomputer for signal acquisition and data management and a microprocessor controlled mass spectrometer for monitoring and display of medical gases (anesthetic agents, nitrogen, argon, oxygen, and carbon dioxide). The final copy of the anesthesia record is produced in the operating room in real time on an X-Y plotter. It is available for use by the anesthetist, who has the option of making handwritten additions or corrections. The system reduces the clerical workload, provides consistent and legible records, and saves the intraoperative record online for subsequent review and statistical analysis. ImagesFigure 2

Harbort, Robert A.; Paulsen, A.W.; Frazier, Wesley T.

1980-01-01

337

Seasat synthetic-aperture radar data reduction using parallel programmable array processors  

NASA Technical Reports Server (NTRS)

This paper presents a digital processing system that produces the Seasat synthetic-aperture radar (SAR) imagery. The system consists of a SEL 32/77 host minicomputer and three AP-120B array processors. The partitioning of the SAR processing functions and the design of software modules is described. The rationale for selecting the parallel array processor architecture and the methodology for developing the parallel processing scheme on this system is described. This system attains a Seasat SAR data reduction speed of 2.5 h per 25-m resolution 4-look and 100 km x 100 km image frame. A preliminary performance evaluation of this parallel processing system and potential future applications for remote sensing data reduction are described.

Wu, C.; Barkan, B.; Karplus, W. J.; Caswell, D.

1982-01-01

338

The MESORAD dose assessment model: Computer code  

SciTech Connect

MESORAD is a dose equivalent model for emergency response applications that is designed to be run on minicomputers. It has been developed by the Pacific Northwest Laboratory for use as part of the Intermediate Dose Assessment System in the US Nuclear Regulatory Commission Operations Center in Washington, DC, and the Emergency Management System in the US Department of Energy Unified Dose Assessment Center in Richland, Washington. This volume describes the MESORAD computer code and contains a listing of the code. The technical basis for MESORAD is described in the first volume of this report (Scherpelz et al. 1986). A third volume of the documentation planned. That volume will contain utility programs and input and output files that can be used to check the implementation of MESORAD. 18 figs., 4 tabs.

Ramsdell, J.V.; Athey, G.F.; Bander, T.J.; Scherpelz, R.I.

1988-10-01

339

An advanced programmable/reconfigurable color graphics display system for crew station technology research  

NASA Technical Reports Server (NTRS)

The hardware configuration, software organization, and applications software for the NASA IKONAS color graphics display system are described. The systems were created at the Langley Research Center Display Device Laboratory to develop, evaluate, and demonstrate advanced generic concepts, technology, and systems integration techniques for electronic crew station systems of future civil aircraft. A minicomputer with 64K core memory acts as a host for a raster scan graphics display generator. The architectures of the hardware system and the graphics display system are provided. The applications software features a FORTRAN-based model of an aircraft, a display system, and the utility program for real-time communications. The model accepts inputs from a two-dimensional joystick and outputs a set of aircraft states. Ongoing and planned work for image segmentation/generation, specialized graphics procedures, and higher level language user interface are discussed.

Montoya, R. J.; England, J. N.; Hatfield, J. J.; Rajala, S. A.

1981-01-01

340

Procedure for editing the fluxgate magnetometer data of the AFGL (Air Force Geophysics Laboratory) magnetometer network  

NASA Astrophysics Data System (ADS)

The procedure for producing the edited data base of the AFGL Magnetometer Network is described in detail. The input to the procedure is the series of archive tapes on which the raw data from the seven network stations are recorded; the output is several series of tapes containing the edited data from the fluxgate magnetometer only. Each series has either a one-second or a one-minute (averaged) sampling interval and is written in a tape format selected for compatibility with one or more specific computer types used at the Air Force Geophysics Laboratory, The World Data Center, and other scientific institutions. Detailed instructions are given for the execution of each of the computer programs employed in the procedure as well as for the basic operation of the network minicomputer on which the procedure is carried out. The procedure is highly automated and the description provided is sufficient to permit its being carried out by an untrained operator.

Paboojian, A. J.

1984-10-01

341

The experimental results of a self tuning adaptive controller using online frequency identification. [for Galileo spacecraft  

NASA Technical Reports Server (NTRS)

A fourth-order laboratory dynamic system featuring very low structural damping and a noncolocated actuator-sensor pair has been used to test a novel real-time adaptive controller, implemented in a minicomputer, which consists of a state estimator, a set of state feedback gains, and a frequency-locked loop for real-time parameter identification. The adaptation algorithm employed can correct controller error and stabilize the system for more than 50 percent variation in the plant's natural frequency, compared with a 10 percent stability margin in frequency variation for a fixed gain controller having the same performance as the nominal plant condition. The very rapid convergence achievable by this adaptive system is demonstrated experimentally, and proven with simple, root-locus methods.

Chiang, W.-W.; Cannon, R. H., Jr.

1985-01-01

342

A method for diagnosing surface parameters using geostationary satellite imagery and a boundary-layer model. M.S. Thesis  

NASA Technical Reports Server (NTRS)

A method for diagnosing surface parameters on a regional scale via geosynchronous satellite imagery is presented. Moisture availability, thermal inertia, atmospheric heat flux, and total evaporation are determined from three infrared images obtained from the Geostationary Operational Environmental Satellite (GOES). Three GOES images (early morning, midafternoon, and night) are obtained from computer tape. Two temperature-difference images are then created. The boundary-layer model is run, and its output is inverted via cubic regression equations. The satellite imagery is efficiently converted into output-variable fields. All computations are executed on a PDP 11/34 minicomputer. Output fields can be produced within one hour of the availability of aligned satellite subimages of a target area.

Polansky, A. C.

1982-01-01

343

Flexible missile autopilot design studies with PC-MATLAB/386  

NASA Technical Reports Server (NTRS)

Development of a responsive, high-bandwidth missile autopilot for airframes which have structural modes of unusually low frequency presents a challenging design task. Such systems are viable candidates for modern, state-space control design methods. The PC-MATLAB interactive software package provides an environment well-suited to the development of candidate linear control laws for flexible missile autopilots. The strengths of MATLAB include: (1) exceptionally high speed (MATLAB's version for 80386-based PC's offers benchmarks approaching minicomputer and mainframe performance); (2) ability to handle large design models of several hundred degrees of freedom, if necessary; and (3) broad extensibility through user-defined functions. To characterize MATLAB capabilities, a simplified design example is presented. This involves interactive definition of an observer-based state-space compensator for a flexible missile autopilot design task. MATLAB capabilities and limitations, in the context of this design task, are then summarized.

Ruth, Michael J.

1989-01-01

344

Spinal cord stimulators and radiotherapy: First case report and practice guidelines  

PubMed Central

Spinal cord stimulators (SCS) are a well-recognised treatment modality in the management of a number of chronic neuropathic pain conditions, particularly failed back syndrome and radiculopathies. The implantable pulse generator (IPG) component of the SCS is designed and operates in a similar fashion to that of a cardiac pacemaker. The IPG consists of an electrical generator, lithium battery, transmitter/receiver and a minicomputer. When stimulated, it generates pulsed electrical signals which stimulate the dorsal columns of the spinal cord, thus alleviating pain. Analogous to a cardiac pacemaker, it can be potentially damaged by ionising radiation from a linear accelerator, in patients undergoing radiotherapy. Herein we report our clinical management of the first reported case of a patient requiring adjuvant breast radiotherapy who had a SCS in situ. We also provide useful practical recommendations on the management of this scenario within a radiation oncology department.

2011-01-01

345

An optical/digital processor - Hardware and applications  

NASA Technical Reports Server (NTRS)

A real-time two-dimensional hybrid processor consisting of a coherent optical system, an optical/digital interface, and a PDP-11/15 control minicomputer is described. The input electrical-to-optical transducer is an electron-beam addressed potassium dideuterium phosphate (KD2PO4) light valve. The requirements and hardware for the output optical-to-digital interface, which is constructed from modular computer building blocks, are presented. Initial experimental results demonstrating the operation of this hybrid processor in phased-array radar data processing, synthetic-aperture image correlation, and text correlation are included. The applications chosen emphasize the role of the interface in the analysis of data from an optical processor and possible extensions to the digital feedback control of an optical processor.

Casasent, D.; Sterling, W. M.

1975-01-01

346

Consistency versus Completeness in Medical Decision Making: Exemplar of 155 Patients Autopsied after Coronary Artery Bypass Graft Surgery  

PubMed Central

Diagnoses made at autopsy are usually yes-no (binary) decisions inferred from clinicopathologic data. A major conceptual problem in determining cause of death is that variables used in classifying some patients may be missing in other patients. A model with too few logical implications will be mathematically incomplete for small data sets; but a model too many implications may be inconsistent with large data sets. We examined the 155 patients autopsied after coronary artery bypass surgery from The Johns Hopkins Hospital autopsy database of 43200 cases. Diagnoses entered on a word processor and transmitted to a minicomputer were solved by the Quine-McCluskey algorithm. Our analysis disclosed that 41% of patients suffered a fatal complication of cardiac surgery; 43% had established surgical complications or unrelated causes of death; and in 17% of cases the cause of death was unexplained. Computerized symbolic logic analysis of medical information is useful in testing the completeness of a proposed set of causes of death.

Moore, G. William; Hutchins, Grover M.

1982-01-01

347

A statistical data analysis and plotting program for cloud microphysics experiments  

NASA Technical Reports Server (NTRS)

The analysis software developed for atmospheric cloud microphysics experiments conducted in the laboratory as well as aboard a KC-135 aircraft is described. A group of four programs was developed and implemented on a Hewlett Packard 1000 series F minicomputer running under HP's RTE-IVB operating system. The programs control and read data from a MEMODYNE Model 3765-8BV cassette recorder, format the data on the Hewlett Packard disk subsystem, and generate statistical data (mean, variance, standard deviation) and voltage and engineering unit plots on a user selected plotting device. The programs are written in HP FORTRAN IV and HP ASSEMBLY Language with the graphics software using the HP 1000 Graphics. The supported plotting devices are the HP 2647A graphics terminal, the HP 9872B four color pen plotter, and the HP 2608A matrix line printer.

Jordan, A. J.

1981-01-01

348

A computer system for geosynchronous satellite navigation  

NASA Technical Reports Server (NTRS)

A computer system specifically designed to estimate and predict Geostationary Operational Environmental Satellite (GOES-4) navigation parameters using Earth imagery is described. The estimates are needed for spacecraft maneuvers while prediction provide the capability for near real-time image registration. System software is composed of four functional subsystems: (1) data base management; (2) image processing; (3) navigation; and (4) output. Hardware consists of a host minicomputer, a cathode ray tube terminal, a graphics/video display unit, and associated input/output peripherals. System validity is established through the processing of actual imagery obtained by sensors on board the Synchronous Meteorological Satellite (SMS-2). Results indicate the system is capable of operationally providing both accurate GOES-4 navigation estimates and images with a potential registration accuracy of several picture elements (pixels).

Koch, D. W.

1980-01-01

349

Using CLIPS in a distributed system: The Network Control Center (NCC) expert system  

NASA Technical Reports Server (NTRS)

This paper describes an intelligent troubleshooting system for the Help Desk domain. It was developed on an IBM-compatible 80286 PC using Microsoft C and CLIPS and an AT&T 3B2 minicomputer using the UNIFY database and a combination of shell script, C programs and SQL queries. The two computers are linked by a lan. The functions of this system are to help non-technical NCC personnel handle trouble calls, to keep a log of problem calls with complete, concise information, and to keep a historical database of problems. The database helps identify hardware and software problem areas and provides a source of new rules for the troubleshooting knowledge base.

Wannemacher, Tom

1990-01-01

350

Computer-controlled system for rapid soil analysis of /sup 226/Ra  

SciTech Connect

A computer-controlled multichannel analysis system has been developed by the Radiological Survey Activities Group at Oak Ridge National Laboratory (ORNL) for the Department of Energy (DOE) in support of the DOE's remedial action programs. The purpose of this system is to provide a rapid estimate of the /sup 226/Ra concentration in soil samples using a 6 x 9-in. NaI(Tl) crystal containing a 3.25-in. deep by 3.5-in. diameter well. This gamma detection system is controlled by a mini-computer with a dual floppy disk storage medium. A two-chip interface was also designed at ORNL which handles all control signals generated from the computer keyboard. These computer-generated control signals are processed in machine language for rapid data transfer and BASIC language is used for data processing.

Doane, R.W.; Berven, B.A.; Blair, M.S.

1984-01-01

351

On-board computer progress in development of A 310 flight testing program  

NASA Technical Reports Server (NTRS)

Onboard computer progress in development of an Airbus A 310 flight testing program is described. Minicomputers were installed onboard three A 310 airplanes in 1979 in order to: (1) assure the flight safety by exercising a limit check of a given set of parameters; (2) improve the efficiency of flight tests and allow cost reduction; and (3) perform test analysis on an external basis by utilizing onboard flight types. The following program considerations are discussed: (1) conclusions based on simulation of an onboard computer system; (2) brief descriptions of A 310 airborne computer equipment, specifically the onboard universal calculator (CUB) consisting of a ROLM 1666 system and visualization system using an AFIGRAF CRT; (3) the ground system and flight information inputs; and (4) specifications and execution priorities for temporary and permanent programs.

Reau, P.

1981-01-01

352

Nuclear power plant simulation on the AD10  

SciTech Connect

A combination of advanced modeling techniques and the modern, special-purpose peripheral minicomputer AD10 is presented which affords realistic predictions of plant transient and severe off-normal events in LWR power plants through on-line simulations at a speed ten times greater than actual process speeds. Results are shown for a BWR plant simulation. The mathematical models account for nonequilibrium, nonhomogeneous two-phase flow effects in the coolant, for acoustical effects in the steam line and for the dynamics of the recirculation loop and feedwater train. Point kinetics incorporate reactivity feedback for void fraction, for fuel temperature, for coolant temperature, and for boron concentration. Control systems and trip logic are simulated for the nuclear steam supply system. 4 refs., 3 figs.

Wulff, W.; Cheng, H.S.; Mallen, A.N.; Stritar, A.

1985-01-01

353

A computer reconstruction system for biological macro- and microstructures traced from serial sections.  

PubMed

A system of programs for building three-dimensional (3D) models of biological macro- and microstructures has been developed. A PDP 11/34 laboratory minicomputer with graphical output devices, and a QUANTIMET image analyzer are used for the reconstruction. The contours of the features can be digitized directly from tissue sections mounted on the stage of an OPTON research light microscope, or indirectly from microphotographs, and from camera lucida drawings. The operator selects contours of features in question from the image by using Quantimet's interactive input devices and commands the Quantimet system to record the image. The 3D models are built from a series of 2D outlines. In the visualization phase the reconstructed objects can be investigated from different viewpoints with their hidden lines removed. Additional calculations (volume and surface area) help in quantitative classification of the reconstructed structures. PMID:3939082

Zsuppán, F

1985-01-01

354

Galileo Institute for Astronomy (IFA) charge-coupled device (CCD) system  

NASA Technical Reports Server (NTRS)

A fully portable self-contained charge-coupled device system has been constructed for shared use with the Galileo Project Imaging Team. The detector currently incorporated in the system is a Texas Instruments 500 x 500 three-phase CCD that has been thinned to operate in the backside illuminated mode. The detector and camera mainframe electronics were provided by the Jet Propulsion Laboratory. The support electronics and control interfaces necessary to operate the mainframe were constructed. The data system, which is built around a DeAnza Visacom VC-5000 Image Processor with an imbedded LSI-11 minicomputer, was also integrated. The capability to do image processing in real-time at the telescope has proved to be extremely valuable. The overall system read noise has been measured at 25 electrons. Full-well capacity is 40,000 electrons. Some results from laboratory tests and initial observing runs at the Mauna Kea 2.2-m telescope are presented.

Hlivak, R. J.; Pilcher, C. B.; Howell, R. R.; Colucci, A. J.; Henry, J. P.

1982-01-01

355

In-circuit fault injector user's guide  

NASA Technical Reports Server (NTRS)

A fault injector system, called an in-circuit injector, was designed and developed to facilitate fault injection experiments performed at NASA-Langley's Avionics Integration Research Lab (AIRLAB). The in-circuit fault injector (ICFI) allows fault injections to be performed on electronic systems without special test features, e.g., sockets. The system supports stuck-at-zero, stuck-at-one, and transient fault models. The ICFI system is interfaced to a VAX-11/750 minicomputer. An interface program has been developed in the VAX. The computer code required to access the interface program is presented. Also presented is the connection procedure to be followed to connect the ICFI system to a circuit under test and the ICFI front panel controls which allow manual control of fault injections.

Padilla, Peter A.

1987-01-01

356

Digital resolver for helicopter model blade motion analysis  

NASA Technical Reports Server (NTRS)

The paper reports the development and initial testing of a digital resolver to replace existing analog signal processing instrumentation. Radiometers, mounted directly on one of the fully articulated blades, are electrically connected through a slip ring to analog signal processing circuitry. The measured signals are periodic with azimuth angle and are resolved into harmonic components, with 0 deg over the tail. The periodic nature of the helicopter blade motion restricts the frequency content of each flapping and yaw signal to the fundamental and harmonics of the rotor rotational frequency. A minicomputer is employed to collect these data and then plot them graphically in real time. With this and other information generated by the instrumentation, a helicopter test pilot can then adjust the helicopter model's controls to achieve the desired aerodynamic test conditions.

Daniels, T. S.; Berry, J. D.; Park, S.

1992-01-01

357

Evaluation of three electronic report processing systems for preparing hydrologic reports of the U.S Geological Survey, Water Resources Division  

USGS Publications Warehouse

In 1987, the Water Resources Division of the U.S. Geological Survey undertook three pilot projects to evaluate electronic report processing systems as a means to improve the quality and timeliness of reports pertaining to water resources investigations. The three projects selected for study included the use of the following configuration of software and hardware: Ventura Publisher software on an IBM model AT personal computer, PageMaker software on a Macintosh computer, and FrameMaker software on a Sun Microsystems workstation. The following assessment criteria were to be addressed in the pilot studies: The combined use of text, tables, and graphics; analysis of time; ease of learning; compatibility with the existing minicomputer system; and technical limitations. It was considered essential that the camera-ready copy produced be in a format suitable for publication. Visual improvement alone was not a consideration. This report consolidates and summarizes the findings of the electronic report processing pilot projects. Text and table files originating on the existing minicomputer system were successfully transformed to the electronic report processing systems in American Standard Code for Information Interchange (ASCII) format. Graphics prepared using a proprietary graphics software package were transferred to all the electronic report processing software through the use of Computer Graphic Metafiles. Graphics from other sources were entered into the systems by scanning paper images. Comparative analysis of time needed to process text and tables by the electronic report processing systems and by conventional methods indicated that, although more time is invested in creating the original page composition for an electronically processed report , substantial time is saved in producing subsequent reports because the format can be stored and re-used by electronic means as a template. Because of the more compact page layouts, costs of printing the reports were 15% to 25% less than costs of printing the reports prepared by conventional methods. Because the largest report workload in the offices conducting water resources investigations is preparation of Water-Resources Investigations Reports, Open-File Reports, and annual State Data Reports, the pilot studies only involved these projects. (USGS)

Stiltner, G. J.

1990-01-01

358

Evolution of the Mobile Information SysTem (MIST)  

NASA Technical Reports Server (NTRS)

The Mobile Information SysTem (MIST) had its origins in the need to determine whether commercial off the shelf (COTS) technologies could improve intervehicular activities (IVA) on International Space Station (ISS) crew maintenance productivity. It began with an exploration of head mounted displays (HMDs), but quickly evolved to include voice recognition, mobile personal computing, and data collection. The unique characteristic of the MIST lies within its mobility, in which a vest is worn that contains a mini-computer and supporting equipment, and a headband with attachments for a HMD, lipstick camera, and microphone. Data is then captured directly by the computer running Morae(TM) or similar software for analysis. To date, the MIST system has been tested in numerous environments such as two parabolic flights on NASA's C-9 microgravity aircraft and several mockup facilities ranging from ISS to the Altair Lunar Sortie Lander. Functional capabilities have included its lightweight and compact design, commonality across systems and environments, and usefulness in remote collaboration. Human Factors evaluations of the system have proven the MIST's ability to be worn for long durations of time (approximately four continuous hours) with no adverse physical deficits, moderate operator compensation, and low workload being reported as measured by Corlett Bishop Discomfort Scale, Cooper-Harper Ratings, and the NASA Total Workload Index (TLX), respectively. Additionally, through development of the system, it has spawned several new applications useful in research. For example, by only employing the lipstick camera, microphone, and a compact digital video recorder (DVR), we created a portable, lightweight data collection device. Video is recorded from the participants point of view (POV) through the use of the camera mounted on the side of the head. Both the video and audio is recorded directly into the DVR located on a belt around the waist. This data is then transferred to another computer for video editing and analysis. Another application has been discovered using simulated flight, in which, a kneeboard is replaced with mini-computer and the HMD to project flight paths and glide slopes for lunar ascent. As technologies evolve, so will the system and its application for research and space system operations.

Litaker, Harry L., Jr.; Thompson, Shelby; Archer, Ronald D.

2008-01-01

359

Description and characterization of the ACRR's programmable transient rod withdrawal mode  

SciTech Connect

To satisfy experiment needs for Sandia's Advanced Reactor Safety Program, a programmable Transient Rod Withdrawal (TRW) mode has been developed for the Annular Core Research Reactor (ACRR). The programmable mode is a modification of the existing continuous-withdrawal TRW mode and permits speed and direction changes during the pulse sequence. Basically, a TRW operation is similar to a routine pulse operation except that transient rods are mechanically withdrawn rather than pneumatically fired. Being a pulse-type operation, the TRW mode complies with pulse-mode safety system settings. Control system interlocks prevent the pneumatic firing of rods in the TRW mode. The hardware for the programmable TRW mode includes three ACRR transient rods, the ACRR timer, two rod programmers, a minicomputer and a summing circuit for position indication. Each ACRR transient rod is mechanically driven by a stepping motor (rated torque at 4.24 joules) and is capable of a maximum TRW speed of 26.7 centimeters/ second. The maximum reactivity insertion rate is $2.45/second with a transient rod bank worth of $3.00 and $3.47/second with a bank worth of $4.25, which is expected to be installed soon. The ACRR timer is a multifunctional timer used in all operating modes of the reactor. In the programmable TRW mode, the timer starts the rod programmers and drops regulating rods to terminate the operation. Programmed withdrawal capability is provided by one of two rod programmers (a hardwire-based unit and a microprocessor-based unit). The hardwire unit has eight intervals in which speed, direction and distance are selected by switches on the front panel. The microprocessor-based unit has the capability of 64 intervals in which speed, direction, and distance or time can be specified. Programming this unit is accomplished from the front panel or by inputting data from an HP-9845. minicomputer via a digital I/O interface. Self-test programs in the software provide a continual check of an operating program. The rod position summing circuit provides a single output for analyzing transient rod position as a function of time. At this writing, approval for installation and initial testing of the TRW mode has been received from the Department of Energy. Mechanical tests are being performed to evaluate the rod drive performance under maximum transient conditions. The initial power tests will concentrate on achieving a 50 megawatt square-wave pulse for a 4-second duration. (author)

Boldt, K.R.; Sullivan, W.H.; Kefauver, H.L. [Sandia National Laboratories, Albuquerque, NM 87185 (United States)

1980-07-01

360

Test plan for 32-bit microcomputers for the Water Resources Division; Chapter A, Test plan for acquisition of prototype 32-bit microcomputers  

USGS Publications Warehouse

The Water Resources Division (WRD) of the U.S. Geological Survey is evaluating 32-bit microcomputers to determine how they can complement, and perhaps later replace, the existing network of minicomputers. The WRD is also designing a National Water Information System (NWIS) that will combine and integrate the existing National Water Data Storage and Retrieval System (WATSTORE), National Water Data Exchange (NAWDEX), and components of several other existing systems. The procedures and testing done in a market evaluation of 32-bit microcomputers are documented. The results of the testing are documented in the NWIS Project Office. The market evaluation was done to identify commercially available hardware and software that could be used for implementing early NWIS prototypes to determine the applicability of 32-bit microcomputers for data base and general computing applications. Three microcomputers will be used for these prototype studies. The results of the prototype studies will be used to compile requirements for a Request for Procurement (RFP) for hardware and software to meet the WRD 's needs in the early 1990's. The identification of qualified vendors to provide the prototype hardware and software included reviewing industry literature, and making telephone calls and personal visits to prospective vendors. Those vendors that appeared to meet general requirements were required to run benchmark tests. (Author 's abstract)

Hutchison, N. E.; Harbaugh, A. W.; Holloway, R. A.; Merk, C. F.

1987-01-01

361

Review of the Water Resources Information System of Argentina  

USGS Publications Warehouse

A representative of the U.S. Geological Survey traveled to Buenos Aires, Argentina, in November 1986, to discuss water information systems and data bank implementation in the Argentine Government Center for Water Resources Information. Software has been written by Center personnel for a minicomputer to be used to manage inventory (index) data and water quality data. Additional hardware and software have been ordered to upgrade the existing computer. Four microcomputers, statistical and data base management software, and network hardware and software for linking the computers have also been ordered. The Center plans to develop a nationwide distributed data base for Argentina that will include the major regional offices as nodes. Needs for continued development of the water resources information system for Argentina were reviewed. Identified needs include: (1) conducting a requirements analysis to define the content of the data base and insure that all user requirements are met, (2) preparing a plan for the development, implementation, and operation of the data base, and (3) developing a conceptual design to inform all development personnel and users of the basic functionality planned for the system. A quality assurance and configuration management program to provide oversight to the development process was also discussed. (USGS)

Hutchison, N. E.

1987-01-01

362

Low-cost log analysis using a graphics-based microcomputer and off-the-shelf software. Part 2. Extending spreadsheet templates with interactive graphics tools  

SciTech Connect

While the PC user remained in an MS-DOS-dominated world there appeared to be only two choices for the personal log analysis system. So-called entry level log analysis workstations, though based on a low-cost PC-Compatible CPU, because useful only when augmented with several thousand dollars worth of peripheral hardware: graphics and color cards, expansion memory, high-resolution monitor, plotter, film recorder, etc. Software upgrades, maintenance and training contributed to bringing the system into the range of larger minicomputer-based workstation, in price if not, unfortunately, in performance. Several stand-alone packages are available, which may be run on a standard unadorned PC - truly low cost software capable of running on a truly low-cost computer. Unfortunately, in doing so they must sacrifice the essential power of the expensive products - that integration between interpretive models and color graphics, which allows data editing, manipulation and visualization to be carried out simultaneously and interactively. Without these, a log analysis program is nothing more than a set of specialized calculation routines.

Whittaker, A.

1988-08-01

363

High strain rate properties of unidirectional composites, part 1  

NASA Technical Reports Server (NTRS)

Experimental methods were developed for testing and characterization of composite materials at strain rates ranging from quasi-static to over 500 s(sup -1). Three materials were characterized, two graphite/epoxies and a graphite/S-glass/epoxy. Properties were obtained by testing thin rings 10.16 cm (4 in.) in diameter, 2.54 cm (1 in.) wide, and six to eight plies thick under internal pressure. Unidirectional 0 degree, 90 degree, and 10 degree off-axis rings were tested to obtain longitudinal, transverse, and in-plane shear properties. In the dynamic tests internal pressure was applied explosively through a liquid and the pressure was measured with a calibrated steel ring. Strains in the calibration and specimen rings were recorded with a digital processing oscilloscope. The data were processed and the equation of motion solved numerically by the mini-computer attached to the oscilloscope. Results were obtained and plotted in the form of dynamic stress-strain curves. Longitudinal properties which are governed by the fibers do not vary much with strain rate with only a moderate (up to 20 percent) increase in modulus. Transverse modulus and strength increase sharply with strain rate reaching values up to three times the static values. The in-plane shear modulus and shear strength increase noticeably with strain rate by up to approximately 65 percent. In all cases ultimate strains do not vary significantly with strain rates.

Daniel, I. M.

1991-01-01

364

Tuna cytochrome c at 2.0 A resolution. III. Coordinate optimization and comparison of structures.  

PubMed

Optimum coordinate sets have been obtained for ferrocytochrome c and the two symmetry-independent molecules of ferricytochrome c from tuna at 2.0 A resolution by making the best fit of models with standard bond lengths and angles to the experimental electron density maps (1977) J. Biol. Chem. 252, 759-785, as a preliminary to full refinement with 1.5 A data. Both the Diamond model-building programs and locally developed minicomputer routines were tried, with the latter preferred for economy and ease of operation, although both gave satisfactory results. Atomic coordinates are available on microfiche or from the Brookhaven Protein Data Bank. Using the two ferricytochrome molecules as a control, no differences between oxidized and reduced cytochrome molecules can be seen that are outside the probable limits of accuracy of the 2.0 A analysis. Rotation and subtractive difference map comparisons also show no conformation changes. If believable differences do appear in the course of the 1.5 A refinement now underway, these should be no more than minor breathing of main chain or adjustment of side chains. PMID:194885

Mandel, N; Mandel, G; Trus, B L; Rosenberg, J; Carlson, G; Dickerson, R E

1977-07-10

365

Evaluation of an electro-optic remote displacement measuring system  

NASA Technical Reports Server (NTRS)

An instrumentation system to provide a noncontact method for measurement of target positions was evaluated. The system employs two electro-optic camera units which give stereo information for use in determining three dimensional target locations. Specially developed, infrared sensitive photodetectors are used in the cameras to sense radiation from light emitting diode targets. Up to 30 of these targets can be monitored with a sampling rate of 312 Hz per target. An important part of the system is a minicomputer which is used to collect the camera data, sort it, make corrections for distortions in the electro-optic system, and perform the necesssary coordinate transformations. If target motions are restricted to locations in a plane which is perpendicular to a camera's optical axis, the system can be used with just one camera. Calibrations performed in this mode characterize accuracies in single camera operation. This information is also useful in determination of single camera contributions to total system errors. For this reason the system was tested in both the single camera and two camera (stereo) modes of operation.

Monteith, J. H.; Kroen, M. L.

1982-01-01

366

Interactive initialization of heat flux parameters for numerical models using satellite temperature measurements. [Kansas and Indiana  

NASA Technical Reports Server (NTRS)

A method for obtaining patterns of moisture availability (and net evaporation) from satellite infrared measurements employs Carlson's boundary layer model and a variety of image processing routines executed by a minicomputer. To test the method with regard to regional scale moisture analyses, two case studies were chosen because of the availability of HCMM data and because of the presence of a large horizontal gradient in antecedent precipitation and crp moisture index. Results show some correlation in both cases between antecedent precipitation and derived moisture availability. Apparently, regional-scale moisture availability patterns can be determined with some degree of fidelity but the values themselves may be useful only in the relative sense and significant to within plus or minus one category of dryness over a range of 4 or 5 categories between absolutely dry and field saturation. Preliminary results suggest that the derived moisture values correlate best with longer-term precipitation totals, suggesting that the infrared temperatures respond more sensitively to a relatively deep substrate layer.

Carlson, T. N. (principal investigator)

1982-01-01

367

A remote control console for the HHIRF 25-MV Tandem Accelerator  

SciTech Connect

The CAMAC-based control system for the 25-MV Tandem Accelerator at HHIRF uses two Perkin-Elmer, 32-bit minicomputers: a message-switching computer and a supervisory computer. Two operator consoles are located on one of the six serial highways. Operator control is provided by means of a console CRT, trackball, assignable shaft encoders, and meters. The message-switching computer transmits and receives control information on the serial highways. At present, the CRT pages with updated parameters can be displayed and parameters can be controlled only from the two existing consoles, one in the Tandem control room and the other in the ORIC control room. It has become necessary to expand the control capability to several other locations in the building. With the expansion of control and monitoring capability of accelerator parameters to other locations, the operators will be able to control and observe the result of the control action at the same time. This capability will be useful in the new Radioactive Ion Beam project of the division. Since the new control console will be PC-based, the existing page format will be changed. The PC will be communicating with the Perkin-Elmer through RS-232 with the aid of a communication protocol. Hardware configuration has been established, a software program that reads the pages from the shared memory, and a communication protocol have been developed. The following sections present the implementation strategy, work completed, future action plans, and the functional details of the communication protocol.

Hasanul Basher, A.M.

1993-09-01

368

SYSTEM DESIGN AND PERFORMANCE FOR THE RECENT DIII-D NEUTRAL BEAM COMPUTER UPGRADE  

SciTech Connect

OAK-B135 This operating year marks an upgrade to the computer system charged with control and data acquisition for neutral beam injection system's heating at the DIII-D National Fusion Facility, funded by the US Department of Energy and operated by General Atomics (GA). This upgrade represents the third and latest major revision to a system which has been in service over twenty years. The first control and data acquisition computers were four 16 bit mini computers running a proprietary operating system. Each of the four controlled two ion source over dedicated CAMAC highway. In a 1995 upgrade, the system evolved to be two 32 bit Motorola mini-computers running a version of UNIX. Each computer controlled four ion sources with two CAMAC highways per CPU. This latest upgrade builds on this same logical organization, but makes significant advances in cost, maintainability, and the degree to which the system is open to future modification. The new control and data acquisition system is formed of two 2 GHz Intel Pentium 4 based PC's, running the LINUX operating system. Each PC drives two CAMAC serial highways using a combination of Kinetic Systems PCI standard CAMAC Hardware Drivers and a low-level software driver written in-house expressly for this device. This paper discusses the overall system design and implementation detail, describing actual operating experience for the initial six months of operation.

PHILLIPS,J.C; PENAFLOR,B.G; PHAM,N.Q; PIGLOWSKI,D.A

2003-10-01

369

The graphics and data acquisition software package  

NASA Technical Reports Server (NTRS)

A software package was developed for use with micro and minicomputers, particularly the LSI-11/DPD-11 series. The package has a number of Fortran-callable subroutines which perform a variety of frequently needed tasks for biomedical applications. All routines are well documented, flexible, easy to use and modify, and require minimal programmer knowledge of peripheral hardware. The package is also economical of memory and CPU time. A single subroutine call can perform any one of the following functions: (1) plot an array of integer values from sampled A/D data, (2) plot an array of Y values versus an array of X values; (3) draw horizontal and/or vertical grid lines of selectable type; (4) annotate grid lines with user units; (5) get coordinates of user controlled crosshairs from the terminal for interactive graphics; (6) sample any analog channel with program selectable gain; (7) wait a specified time interval, and (8) perform random access I/O of one or more blocks of a sequential disk file. Several miscellaneous functions are also provided.

Crosier, W. G.

1981-01-01

370

Behind the results: hand processing the recent Kiribati and Tuvalu censuses.  

PubMed

In October of 1975, the independent nations of Kiribati and Tuvalu were formed from the Gilbert and Ellice Islands colony. A decision was made to hold full population censuses in 1978 and 1979 for Kiribati and Tuvalu respectively, where the 2 nations' censuses would be as similar as possible, and would be repeated at 5 year intervals. Island geography caused many problems during data collection, due to wide population dispersal over many scattered islands, and difficulties in interisland communication. Hand processing of the census data had some advantages and many disadvantages. The main advantages of this system included that it was locally labor intensive and inexpensive, and no less time consuming than sending data to a computer center in another country for processing. Disadvantages included that it was prone to human error, tedious, required extensive planning and preparation, and a commitment to using predetermined tabulations. Additionally, storage of the collected data was unacceptably bulky and unwieldy, making the sorting of the data for further analysis nearly impossible. The author suggests that the full potential of the census data cannot be realized unless, in the future, the data are captured and stored on magnetic disks or tapes. Minicomputers are suggested as a more appropriate means of processing data for Kiribati, Tuvalu, and other small Pacific countries. PMID:12264007

Macrae, S

1981-08-01

371

Design and implementation of the Interactive Communications Simulator (ICS)  

NASA Astrophysics Data System (ADS)

This report describes the development and capabilities of a fairly comprehensive system for the digital simulation of a wide variety of point-to-point digital communication systems. This system is called the Interactive Communications Simulator (ICS). The ICS is a flexible, graphics oriented, high speed, and highly interactive hardware/software system consisting of a PDP 11-40 minicomputer acting as host to a fast peripheral array processor, the Floating Point Systems AP-120B. Its modeling structure is the classical breakout of the various generic signal processing functions in any communication link, from source to sink. The signal processing functions are predominantly modeled in terms of their complex envelope representations for uniformity, ease, and accuracy of analyses. It is fully supported by an extensive graphics support package and many powerful analysis subroutines, to facilitate user-interactions, analyses, and output displays. The modeling and simulation tasks are optimally partitioned between the PDP 11/40 host and the AP-120B peripheral array processor to ensure ease-of-use and highly efficient manipulations. The ICS also features realistic channel models, in addition to the analytically expedient Additive White Gaussian Noise (AWGN) channel, so that the performance and behavior of all modeled transceiver functions can be more exactly assessed and specified. All simulation modules are written in the AP Assembly Language, and the system software, graphics support package and analysis subroutines are written in DEC FORTRAN IV.

Modestino, J. W.; Matis, K. R.; Jung, K. Y.; Vickers, A. L.

1981-04-01

372

Multi-site magnetotelluric measurement system with real-time data analysis. Final technical report No. 210  

SciTech Connect

A magnetotelluric measurement system has been designed to provide a more cost effective electrical method for geothermal and mineral exploration. The theoretical requirements and sensitivities of the magnetotelluric inversion process were specifically addressed in determining system performance requirements. Significantly reduced instrument noise levels provide improved data quality, and simultaneous measurement at up to six locations provides reduced cost per site. Remotely located, battery powered, instrumentation packages return data to a central controlling site through a 2560 baud wire-line or radio link. Each remote package contains preamplifiers, data conditioning filters, and a 12-bit gain ranging A-D converter for frequencies from 0.001 Hz to 8 Hz. Data frequencies above 8 Hz are processed sequentially by a heterodyne receiver to reduce bandwidth to within the limits of the 2560 baud data link. The central data collection site provides overall control for the entire system. The system operator interacts with the system through a CRT terminal, and he receives hard copy from a matrix graphics printer. Data from the remote packages may be recorded in time sequence on a magnetic tape cartridge system, or an optional Hewlett-Packard 21MX minicomputer can be used to perform real-time frequency analysis. The results of this analysis provide feedback to the operator for improved evaluation of system performance and for selection of future measurement sites.

Becker, J.D.; Bostick, F.X. Jr.; Smith, H.W.

1981-09-01

373

Automated COBOL code generation for SNAP-I CAI development and maintenance procedures  

SciTech Connect

In designing and implementing a computer aided instruction (CAI) prototype for the Navy Management System Support Office (NAVMASSO) as part of the Shipboard Nontactical ADP Program (SNAP), Data Systems Engineering Organization (DSEO) personnel developed techniques for automating the production of COBOL source code for CAI applications. This report discusses the techniques applied, which incorporate the use of a database management system (DBMS) to store, access, and manipulate the data necessary for producing COBOL source code automatically. The objective for developing the code generation techniques is to allow for the production of future applications in an efficient and reliable manner. This report covers the standards and conventions defined, database tables created, and the host language interface program used for generating COBOL source files. The approach is responsible for producing 85 percent of an 830,000 line COBOL application, in approximately one year's time. This code generation program generated transaction processing routines to be executed under the DM6TP NAVMASSO distributed processing environment on the Honeywell DPS-6 minicomputers, representing the standard SNAP-I environment.

Buhrmaster, M.A.; Duncan, L.D.; Hume, R.; Huntley, A.F.

1988-07-01

374

AESOP XX: summary of proceedings. [Gatlinburg, Tennessee, April 24 to 26, 1979  

SciTech Connect

The 20th meeting of the Association for Energy Systems, Operations, and Programming (AESOP) was held in Gatlinburg, Tennessee, on April 24 to 26, 1979. Representatives of DOE Headquarters discussed the effects that new security and privacy regulations will have on automatic data processing operations. The status and future possibilities of the Business Management Information System (BMIS) were also discussed. Then representatives of various DOE offices and contractors presented reports on various topics. This report contains two-page summaries of the papers presented at the meeting. Session topics and titles of papers were as follows: Washington report (New ADP issues; BMIS: the Business Management Information System; Nuclear weapons and the computer); Improving the productivity of the computing analyst/programer (What productivity improvement tools are available; Rocky Flats experience with SDM/70; Albuquerque Operations Office experience with SDM/70; Planning and project management; Minicomputer standards and programer productivity; MRC productivity gains through applications development tools); User viewpoints and expectations of data processing (User perspectives on computer applications; User viewpoints on environmental studies; Planning and implementing a procurement system; Two sides of the DP coin); Data base management (Use of data base systems within DOE; Future trends in data base hardware; Future trends in data base software; Toward automating the data base design process); and Management discussions. Complete versions of three of the papers have already been cited in ERA. These can be located by reference to the entry CONF-790431-- in the Report Number Index. (RWR)

none,

1980-03-01

375

Using DATATRIEVE as a COBOL code generator  

SciTech Connect

This paper describes the use of DATATRIEVE to automatically generate large blocks of COBOL code for use in a computer aided instruction application. Pro/DATATRIEVE was used to store information describing the attributes of screens that make up the instruction and tests, and to maintain data on expected student responses for each screen. DATATRIEVE procedures were used to create standard, error-free COBOL code that controls the presentation and order of flow of the screens within the lessons and tests. The code generated by DATATRIEVE was incorporated into skeleton COBOL programs through use of the COPY statement. This project involves the use of DATATRIEVE on a DEC Professional-380. The generated code segments were electronically transmitted to a Honeywell DPS-6 minicomputer where the application was compiled and executed. However, the procedures used for the code generation could be applied to any DATATRIEVE implementation and any application system that requires standardized procedures for processing a variety of functions (i.e., transactions).

Duncan, L.D.

1986-04-01

376

The internal design phase of the breeding and multigeneration support system: A tracking and decision support system for NCTR (National Center for Toxicological Research)  

SciTech Connect

The National Center for Toxicological Research (NCTR) is the basic research arm of the US Food and Drug Administration (FDA). The NCTR has upgraded and standardized its computer operations on Digital Equipment Corporation VAX minicomputers using Software AG's ADABAS data base management system for all research applications. The NCTR is currently performing a large study to improve the functionality of the animal husbandry systems and applications called Breeding/Multigeneration Support System (BMSS). When functional, it will operate on VAX equipment using the ADABAS data base management system, TDMS, and COBOL. Oak Ridge National Laboratory (ORNL) is supporting NCTR in the design, prototyping, and software engineering of the BMSS. This document summarizes the internal design elements that include data structures, file structures, and system attributes that were required to facilitate the decision support requirements defined in the external design work. Prototype pseudocode then was developed for the recommended system attributes and file and data structures. Finally, ORNL described the processing requirements including the initial access of the BMSS, integration of the existing INLIFE system and the STUDY DEFINITION system under development, data system initialization and maintenance, and BMSS testing and verification. This document describes ORNL's recommendations for the internal design of the BMSS. ORNL will provide research support to NCTR in the additional phases of systems life cycle development for BMSS. ORNL has prepared this document according to NCTR's Standard Operating Procedures for Systems Development. 6 figs., 5 tabs.

Strand, R.; Cox, T.L.; Sjoreen, A.; Alvic, D.

1989-06-01

377

The external design phase of the breeding and multigeneration support system: A tracking and decision support system for NCTR (National Center for Toxicological Research)  

SciTech Connect

The National Center for Toxicological Research (NCTR) is the basic research arm of the US Food and Drug Administration (FDA). The NCTR has upgraded and standardized its computer operations on Digital Equipment Corporation VAX minicomputers using Software AG's ADABAS data base management system for all research applications. The NCTR is currently performing a large study to improve the functionality of the animal husbandry systems and applications called Breeding/Multigeneration Support System (BMSS). When functional, it will operate on VAX equipment using the ADABAS data base management system, TDMS, and COBOL. Oak Ridge National Laboratory (ORNL) is supporting NCTR in the design, prototyping, and software engineering of the BMSS. This document summarizes the external design elements that include data entry screens, screen reports, summary and status reports, and functional definitions of screen and report data. ORNL will provide research support to NCTR in the additional phases of systems life cycle development for BMSS. ORNL has prepared this document according to NCTR's Standard Operating Procedures for Systems Development. 8 figs., 7 tabs.

Strand, R.; Cox, T.L.; Sjoreen, A.; Alvic, D.

1989-05-01

378

Wading through computerese.  

PubMed

Minicomputers, microcomputers, supercomputers, disks, disk drives, diskettes, bits, bytes, input, output, COBOL, FORTRAN, RPG, memory, "K", CRT, CRU, etc., etc. What does all this mean, and more importantly, what can it do for you, the medical group manager, possibly faced with your first hard decision regarding the use of computers in the day-to-day business of running your medical group? The author provides a glossary of these and many other terms for you and puts them in proper perspective so you are more easily able to wade through the morass of computerese jargon. Further, a number of considerations are presented which will give you a base from which to operate, and a series of questions are presented relative to each of the considerations. Your answers will generate enough information relative to any system to enable you to make a reasoned decision about that system. It is not the intent of this article to tell you which system is best--you must judge that for yourself as you evaluate the questions and considerations presented in the light of your unique setting. PMID:10261827

Lietzke, E T

1982-01-01

379

Rectification of terrain induced distortions in radar imagery  

NASA Technical Reports Server (NTRS)

This paper describes a technique to generate geocoded synthetic aperture radar (SAR) imagery corrected for terrain induced geometric distortions. This algorithm transforms the raw slant range image, generated by the signal processor, into a map registered product, resampled to either Universal Transverse Mercator (UTM) or Polar Stereographic projections, and corrected for foreshortening. The technique utilizes the space platform trajectory information in conjunction with a digital elevation map (DEM) of the target area to generate an ortho-radar map with near-autonomous operation. The current procedure requires only two to three tie-points to compensate for the platform position uncertainty that results in translational error between the image and the DEM. This approach is unique in that it does not require generation of a simulated radar image from the DEM or a grid of tie-points to characterize the image-to-map distortions. Rather, it models the inherent distortions based on knowledge of the radar data collection characteristics, the signal Doppler parameters, and the local terrain height to automatically predict the registration transformation. This algorithm has been implemented on a minicomputer system equipped with an array processor and a large random-access memory to optimize the throughput.

Kwok, Ronald; Curlander, John C.; Pang, Shirley S.

1987-01-01

380

Fast Neutron Inelastic Scattering Cross Sections of URANIUM-238  

NASA Astrophysics Data System (ADS)

Neutron inelastic scattering cross sections for ('238)U levels between 680 keV and 1530 keV excitation energy have been measured in the incident neutron energy range from 0.9 to 2.2 MeV. As a highly deformed actinide nucleus, ('238)U possesses a complicated level structure and level transition properties, so the (n,n') time-of -flight (TOF) techniques were used to obtain direct level cross sections, Neutrons were generated using the ('7)Li(p,n) reaction. In order to achieve the required energy resolution of less than 15 keV the parameters of our (n,n') TOF spectrometer were optimized. Level cross sections were deduced from measured 125(DEGREES)-differential scattering cross sections. The validity of this procedure was confirmed by measuring the angular distributions for 9 levels at E(,n) = 1.5 MeV and E(,n) = 2.0 MeV, respectively. In the data analysis the additional background due to fission in ('238)U scatterer induced by fast neutron was simulated and subtracted. The TOF spectra were unfolded by using the method of response function. The correction factors of multiple scattering and neutron attenuation for disc scatterer were calculated by using analytic method coded for a small minicomputer. The excitation functions obtained were compared with our previous (n,n'(gamma)) results, with those of ORNL measurements, with ENDF/B-V evaluations, and with recent theoretical calculations.

Shao, Ji-Qun

381

Distribution and clearance of radioactive aerosol on the nasal mucosa.  

PubMed

The distribution and clearance of aerosolized radioactive technetium 99m pertechnate in physiologic buffered saline was analyzed in four human adult asymptomatic volunteers following delivery into one nostril in the same manner as for nasal challenge testing (i.e., 0.1 ml via a 251 DeVilbiss atomizer powered by a compressor delivering 0.10 +/- 0.01 gm/spray). For comparison, squeeze bottles and spray bottles from commercial sources, a 114 and a 127 DeVilbiss atomizer, and a pipette were employed. Lateral imagery via minicomputer processing was used to determine both distribution and clearance of the radiotracer. The counts after 1 minute were lower following pipette delivery than with the other devices. None yielded discernable , wide-spread distribution of aerosol throughout the nasal cavity. Following delivery from the 251 atomizer, mean clearance at 17 minutes was 60.0%. Similar clearance rates were obtained with the other spraying methods except for lower values with the squeeze bottle. Analysis of six hour clearance studies by linear regression showed a relatively rapid initial phase, which is probably due largely to mucociliary clearance, and a prolonged late phase related to the very slow disappearance of residual material located far anteriorly in the nose. Achieving good initial retention and rapid clearance of material deposited anteriorly in the nose are desirable attributes of devices employed for administering materials intranasally. PMID:6328631

McLean, J A; Bacon, J R; Mathews, K P; Thrall, J H; Banas, J M; Hedden, J; Bayne, N K

1984-03-01

382

Fluid dynamics of double diffusive systems  

SciTech Connect

A study of mixing processes in doubly diffusive systems is being conducted. Continuous gradients of two diffusing components (heat and salinity in our case) are being used as initial conditions, and forcing is introduced by lateral heating and surface shear. The goals of the proposed work include: (1) quantification of the effects of finite amplitude disturbances on stable, double diffusive systems, particularly with respect to lateral heating, (2) development of an improved understanding of the physical phenomena present in wind-driven shear flows in double diffusive stratified environments, (3) increasing our knowledge-base on turbulent flow in stratified environments and how to represent it, and (4) formulation of a numerical code for such flows. The work is being carried out in an experimental facility which is located in the Stanford Environmental Fluid Mechanics Laboratory, and on laboratory minicomputers and CRAY computers. In particular we are focusing on the following key issues: (1) the formation and propagation of double diffusive intrusions away from a heated wall and the effects of lateral heating on the double diffusive system; (2) the interaction between the double diffusively influenced fluxes and the turbulence induced fluxes; (3) the measurement of heat and mass fluxes; and (4) the influence of double diffusive gradients on mixed layer deepening. 1 fig.

Koseff, J.R.

1989-04-07

383

PSA: A program to streamline orbit determination for launch support operations  

NASA Technical Reports Server (NTRS)

An interactive, menu driven computer program was written to streamline the orbit determination process during the critical launch support phase of a mission. Residing on a virtual memory minicomputer, this program retains the quantities in-core needed to obtain a least squares estimate of the spacecraft trajectory with interactive displays to assist in rapid radio metric data evaluation. Menu-driven displays allow real time filter and data strategy development. Graphical and tabular displays can be sent to a laser printer for analysis without exiting the program. Products generated by this program feed back to the main orbit determination program in order to further refine the estimate of the trajectory. The final estimate provides a spacecraft ephemeris which is transmitted to the mission control center and used for antenna pointing and frequency predict generation by the Deep Space Network. The development and implementation process of this program differs from that used for most other navigation software by allowing the users to check important operating features during development and have changes made as needed.

Legerton, V. N.; Mottinger, N. A.

1988-01-01

384

Upgrading NASA/DOSE laser ranging system control computers  

NASA Technical Reports Server (NTRS)

Laser ranging systems now managed by the NASA Dynamics of the Solid Earth (DOSE) and operated by the Bendix Field Engineering Corporation, the University of Hawaii, and the University of Texas have produced a wealth on interdisciplinary scientific data over the last three decades. Despite upgrades to the most of the ranging station subsystems, the control computers remain a mix of 1970's vintage minicomputers. These encompass a wide range of vendors, operating systems, and languages, making hardware and software support increasingly difficult. Current technology allows replacement of controller computers at a relatively low cost while maintaining excellent processing power and a friendly operating environment. The new controller systems are now being designed using IBM-PC-compatible 80486-based microcomputers, a real-time Unix operating system (LynxOS), and X-windows/Motif IB, and serial interfaces have been chosen. This design supports minimizing short and long term costs by relying on proven standards for both hardware and software components. Currently, the project is in the design and prototyping stage with the first systems targeted for production in mid-1993.

Ricklefs, Randall L.; Cheek, Jack; Seery, Paul J.; Emenheiser, Kenneth S.; Hanrahan, William P., III; Mcgarry, Jan F.

1993-01-01

385

HEO multimission navigation concept  

NASA Technical Reports Server (NTRS)

As part of the Network Consolidation Program, the 26-meter Tracking and Communication Subnet was transferred to JPL. Along with this transfer JPL assumed responsibility for tracking and navigation support for Earth orbiter missions normally tracked by the 26-meter sites. The High Earth Orbiter (HEO) Multimission Navigation Facility was formed as a component of the Deep Space Network (DSN) Tracking System for the purpose of supporting Earth orbiter missions and certain classes of deep space missions. This facility has been implemented on a dedicated VAX 11/780 minicomputer within the Network Operations Control Center (NOCC). The primary function of the system is to process radio metric data and estimate the orbit of a spacecraft in near-Earth or deep space environment. The system is capable of processing radio metric data in near-real time and providing the quick turnaround required for Earth orbiter operations. It is also capable of generating precision spacecraft ephemeris for use by the NOCC Support Subsystem and external agencies. This article discusses the implementation and functional operation of the Multimission Navigation Subsystem and describes the support that has been provided for an array of missions.

Ellis, J.

1986-01-01

386

Definition study for photovoltaic residential prototype system  

NASA Technical Reports Server (NTRS)

A parametric sensitivity study and definition of the conceptual design is presented. A computer program containing the solar irradiance, solar array, and energy balance models was developed to determine the sensitivities of solar insolation and the corresponding solar array output at five sites selected for this study as well as the performance of several solar array/battery systems. A baseline electrical configuration was chosen, and three design options were recommended. The study indicates that the most sensitive parameters are the solar insolation and the inverter efficiency. The baseline PST selected is comprised of a 133 sg m solar array, 250 ampere hour battery, one to three inverters, and a full shunt regulator to limit the upper solar array voltage. A minicomputer controlled system is recommended to provide the overall control, display, and data acquisition requirements. Architectural renderings of two photovoltaic residential concepts, one above ground and the other underground, are presented. The institutional problems were defined in the areas of legal liabilities during and after installation of the PST, labor practices, building restrictions and architectural guides, and land use.

Imamura, M. S.; Hulstrom, R. L.; Cookson, C.; Waldman, B. H.; Lane, R. A.

1976-01-01

387

A C Language Implementation of the SRO (Murdock) Detector/Analyzer  

USGS Publications Warehouse

A signal detector and analyzer algorithm was described by Murdock and Hutt in 1983. The algorithm emulates the performance of a human interpreter of seismograms. It estimates the signal onset, the direction of onset (positive or negative), the quality of these determinations, the period and amplitude of the signal, and the background noise at the time of the signal. The algorithm has been coded in C language for implementation as a 'blackbox' for data similar to that of the China Digital Seismic Network. A driver for the algorithm is included, as are suggestions for other drivers. In all of these routines, plus several FIR filters that are included as well, floating point operations are not required. Multichannel operation is supported. Although the primary use of the code has been for in-house processing of broadband and short period data of the China Digital Seismic Network, provisions have been made to process the long period and very long period data of that system as well. The code for the in-house detector, which runs on a mini-computer, is very similar to that of the field system, which runs on a microprocessor. The code is documented.

Murdock, James N.; Halbert, Scott E.

1991-01-01

388

1985 ACSM-ASPRS Fall Convention, Indianapolis, IN, September 8-13, 1985, Technical Papers  

SciTech Connect

Papers are presented on Landsat image data quality analysis, primary data acquisition, cartography, geodesy, land surveying, and the applications of satellite remote sensing data. Topics discussed include optical scanning and interactive color graphics; the determination of astrolatitudes and astrolongitudes using x, y, z-coordinates on the celestial sphere; raster-based contour plotting from digital elevation models using minicomputers or microcomputers; the operational techniques of the GPS when utilized as a survey instrument; public land surveying and high technology; the use of multitemporal Landsat MSS data for studying forest cover types; interpretation of satellite and aircraft L-band synthetic aperture radar imagery; geological analysis of Landsat MSS data; and an interactive real time digital image processing system. Consideration is given to a large format reconnaissance camera; creating an optimized color balance for TM and MSS imagery; band combination selection for visual interpretation of thematic mapper data for resource management; the effect of spatial filtering on scene noise and boundary detail in thematic mapper imagery; the evaluation of the geometric quality of thematic mapper photographic data; and the analysis and correction of Landsat 4 and 5 thematic mapper sensor data.

Not Available

1985-01-01

389

A five-collector system for the simultaneous measurement of argon isotope ratios in a static mass spectrometer  

USGS Publications Warehouse

A system is described that utilizes five separate Faraday-cup collector assemblies, aligned along the focal plane of a mass spectrometer, to collect simultaneous argon ion beams at masses 36-40. Each collector has its own electrometer amplifier and analog-to-digital measuring channel, the outputs of which are processed by a minicomputer that also controls the mass spectrometer. The mass spectrometer utilizes a 90?? sector magnetic analyzer with a radius of 23 cm, in which some degree of z-direction focussing is provided for all the ion beams by the fringe field of the magnet. Simultaneous measurement of the ion beams helps to eliminate mass-spectrometer memory as a significant source of measurement error during an analysis. Isotope ratios stabilize between 7 and 9 s after sample admission into the spectrometer, and thereafter changes in the measured ratios are linear, typically to within ??0.02%. Thus the multi-collector arrangement permits very short extrapolation times for computation of initial ratios, and also provides the advantages of simultaneous measurement of the ion currents in that errors due to variations in ion beam intensity are minimized. A complete analysis takes less than 10 min, so that sample throughput can be greatly enhanced. In this instrument, the factor limiting analytical precision now lies in short-term apparent variations in the interchannel calibration factors. ?? 1981.

Stacey, J. S.; Sherrill, N. D.; Dalrymple, G. B.; Lanphere, M. A.; Carpenter, N. V.

1981-01-01

390

Wargaming and interactive color graphics  

SciTech Connect

JANUS is a two-sided interactive color graphic simulation in which human commanders can direct their forces, each trying to accomplish their mission. This competitive synthetic battlefield is used to explore the range of human ingenuity under conditions of incomplete information about enemy strength and deployment. Each player can react to new situations by planning new unit movements, using conventional and nuclear weapons, or modifying unit objectives. Conventional direct fire among tanks, infantry fighting vehicles, helicopters, and other units is automated subject to constraints of target acquisition, reload rate, range, suppression, etc. Artillery and missile indirect fire systems deliver conventional munitions, smoke, and nuclear weapons. Players use reconnaissance units, helicopters, or fixed wing aircraft to search for enemy unit locations. Counter-battery radars acquire enemy artillery. The JANUS simulation at LLL has demonstrated the value of the computer as a sophisticated blackboard. A small dedicated minicomputer is adequate for detailed calculations, and may be preferable to sharing a more powerful machine. Real-time color interactive graphics are essential to allow realistic command decision inputs. Competitive human-versus-human synthetic experiences are intense and well-remembered. 2 figures.

Bly, S.; Buzzell, C.; Smith, G.

1980-08-04

391

ATS-6 - Radio Beacon Experiment: The first years. [ionospheric and satellite-to-ground electron content  

NASA Technical Reports Server (NTRS)

The Radio Beacon Experiment aboard Applications Technology Satellite-6 (ATS-6) is designed to measure the total electron content and the ionospheric electron content between the satellite and ground. The spaceborne beacon transmits signals on frequencies of 40, 140, and 360 MHz with amplitude modulations of 1 MHz and/or 0.1 MHz for the measurement of modulation phase, Faraday rotation, and amplitude. The modulation phase delays are calibrated in the satellite and in the ground equipment, and the polarization of the emitted signals are predetermined by standard antenna range techniques. The design of the ATS-6 receiver in Boulder, Colorado, is discussed. The antennae are of the short backfire type described by Ehrenspeck (1967), with nominal gains of 13, 19, and 22 dB at 40, 140, and 360 MHz, respectively. Data recording and overall supervision of the receiver is carried out by a 16-bit minicomputer with 8 k of memory. Overall performance of the system is satisfactory. Sample data on the monthly median hourly values of the total electron content, plasmospheric content, and shape factor show distinct seasonal and diurnal variations.

Davies, K.; Fritz, R. B.; Grubb, R. N.; Jones, J. E.

1975-01-01

392

An imaging system for PLIF/Mie measurements for a combusting flow  

NASA Technical Reports Server (NTRS)

The equipment required to establish an imaging system can be divided into four parts: (1) the light source and beam shaping optics; (2) camera and recording; (3) image acquisition and processing; and (4) computer and output systems. A pulsed, Nd:YAG-pummped, frequency-doubled dye laser which can freeze motion in the flowfield is used for an illumination source. A set of lenses is used to form the laser beam into a sheet. The induced fluorescence is collected by an UV-enhanced lens and passes through an UV-enhanced microchannel plate intensifier which is optically coupled to a gated solid state CCD camera. The output of the camera is simultaneously displayed on a monitor and recorded on either a laser videodisc set of a Super VHS VCR. This videodisc set is controlled by a minicomputer via a connection to the RS-232C interface terminals. The imaging system is connected to the host computer by a bus repeater and can be multiplexed between four video input sources. Sample images from a planar shear layer experiment are presented to show the processing capability of the imaging system with the host computer.

Wey, C. C.; Ghorashi, B.; Marek, C. J.; Wey, C.

1990-01-01

393

Pneumatic sample-transfer system for use with the Lawrence Livermore National Laboratory rotating target neutron source (RTNS-I)  

SciTech Connect

A pneumatic sample-transfer system is needed to be able to rapidly retrieve samples irradiated with 14-MeV neutrons at the Rotating Target Neutron Source (RTNS-I). The rabbit system, already in place for many years, has been refurbished with modern system components controlled by an LSI-11 minicomputer. Samples can now be counted three seconds after an irradiation. There are many uses for this expanded 14-MeV neutron activation capability. Several fission products difficult to isolate from mixed fission fragments can be produced instead through (n,p) or (n,..cap alpha..) reactions with stable isotopes. Mass-separated samples of Nd, Mo, and Se, for example, can be irradiated to produce Pr, Nb, and As radionuclides sufficient for decay scheme studies. The system may also be used for multielement fast-neutron activation analysis because the neutron flux is greater than 2 x 10/sup 11/ n/cm/sup 2/-sec. Single element analyses of Si and O are also possible. Finally, measurements of fast-neutron cross sections producing short-lived activation products can be performed with this system. A description of the rabbit system and instructions for its use are presented in this report.

Williams, R.E.

1981-07-01

394

David Florida Laboratory Thermal Vacuum Data Processing System  

NASA Astrophysics Data System (ADS)

During 1991, the Space Simulation Facility conducted a survey to assess the requirements and analyze the merits for purchasing a new thermal vacuum data processing system for its facilities. A new, integrated, cost effective PC-based system was purchased which uses commercial off-the-shelf software for operation and control. This system can be easily reconfigured and allows its users to access a local area network. In addition, it provides superior performance compared to that of the former system which used an outdated mini-computer and peripheral hardware. This paper provides essential background on the old data processing system's features, capabilities, and the performance criteria that drove the genesis of its successor. This paper concludes with a detailed discussion of the thermal vacuum data processing system's components, features, and its important role in supporting our space-simulation environment and our capabilities for spacecraft testing. The new system was tested during the ANIK E spacecraft test, and was fully operational in November 1991.

Choueiry, Elie

1994-11-01

395

[Automated system for collecting, processing and storing individual dosimetric control data].  

PubMed

Organization of a automated system of individual dosimetric control on the basis of mini-computer M-6000 was described. The hard ware system was considered, a coding principle for initial information was proposed. A block diagram of the soft ware consisting of a set of six interrelated programs was presented. Each one was considered in detail. As a result of this system a data bank is being set up for 10000 persons under central individual dosimetric control. The introduction of the automated system made it possible to do away with manual processing, to improve the reliability of processing, to classify registration forms, to control the time course of individual exposures, to detect the most hazardous from the radiation point of view departments and places of work, occupations, and to issue recommendations to improve technological processes to make radiation situation better. The automated system of individual dosimetric control can be recommended for factories and institutions where centralized individual dosimetric control is needed for a numerous staff. PMID:6633201

Sobolev, I A; Khomchik, L M; Zarkh, V G; Khoziainov, V A; Shurkus, A E

1983-10-01

396

WATEQ4F - a personal computer Fortran translation of the geochemical model WATEQ2 with revised data base  

USGS Publications Warehouse

A FORTRAN 77 version of the PL/1 computer program for the geochemical model WATEQ2, which computes major and trace element speciation and mineral saturation for natural waters has been developed. The code (WATEQ4F) has been adapted to execute on an IBM PC or compatible microcomputer. Two versions of the code are available, one operating with IBM Professional FORTRAN and an 8087 or 89287 numeric coprocessor, and one which operates without a numeric coprocessor using Microsoft FORTRAN 77. The calculation procedure is identical to WATEQ2, which has been installed on many mainframes and minicomputers. Limited data base revisions include the addition of the following ions: AlHS04(++), BaS04, CaHS04(++), FeHS04(++), NaF, SrC03, and SrHCO3(+). This report provides the reactions and references for the data base revisions, instructions for program operation, and an explanation of the input and output files. Attachments contain sample output from three water analyses used as test cases and the complete FORTRAN source listing. U.S. Geological Survey geochemical simulation program PHREEQE and mass balance program BALANCE also have been adapted to execute on an IBM PC or compatible microcomputer with a numeric coprocessor and the IBM Professional FORTRAN compiler. (Author 's abstract)

Ball, J. W.; Nordstrom, D. K.; Zachmann, D. W.

1987-01-01

397

An integrated microprocessor-based fermenter control system.  

PubMed

An integrated microprocessor-based fermenter controller was developed in 1980 for an operational environment at Cetus Corp. The main goals in the design and construction of the system were (1) to facilitate scale-up; (2) to provide flexibility and high performance for optimizing fermentation processes; and (3) to be cost-effective for 15 in-house systems. It was also developed to work in conjunction with a laboratory minicomputer for on-line optimization experiments. The controller controls temperature, agitation, dissolved oxygen, pH, and foam throughout each fermentation run without manual intervention. The feedback control parameters have been optimized to provide very accurate control over a wide range of setpoint conditions and under rapidly changing metabolic conditions such as induced during an Escherichia coli batch run. The controller has also been configured to monitor, display, and record each of the controlled variables; support the interactive operator console; and communicate with the laboratory computer. In over 4 years of operation, these systems have met the design goals and have proven to be very reliable. The controller is described, its operational performance presented, and a typical fermentation run delineated. PMID:18555353

Merrill, R D; Bauer, K

1986-04-01

398

Lag in adaptation to lactose as a probe to the timing of permease incorporation into the cell membrane.  

PubMed Central

If bacteria are incapable of forming and incorporating proteins into the cytoplasmic membranes in all phases of the cell cycle, then not all cells from an asynchronous culture should be capable of growth when switched to a new carbon and energy source whose metabolism requires new membrane function. The transfer of an inducible culture to low lactose provides such a situation since the cells cannot grow unless galactoside permease can function to concentrate the lactose internally. From such experiments, it was concluded that the Y gene product of the lac operon is synthesized, incorporated, and can start functioning in active transport, at any time throughout the bulk of the cell cycle. Not only were the lags before growth re-ensued much shorter than would be expected if the membrane transport capability could only be developed in a small portion of the cycle, but brief pulses of a gratuitous inducer shortened the lags much further. Three types of Escherichia coli ML 30 culture were studied: cells that had exhausted the limiting glucose; cells taken directly from glucose-limited chemostats; and a washed suspension of highly catabolite repressed cells from cultures grown in high levels of glucose and gluconate. The growth studies reported here were performed on-line with a minicomputer. They represent at least an order of magnitude increase in accuracy in estimating growth parameters over previous instrumentation.

Koch, A L

1975-01-01

399

Petroleum Quality Information System (PQIS): requirements and recommended design. Final report  

SciTech Connect

DoD uses about 200 million barrels of petroleum fuels a year, at annual cost of more than $6 billion. To make sure the various fuels are suitable for their intended uses, standards of quality have been established. But data about quality are not always current or in a form that lends itself readily to analysis. A suitable DoD-wide system for collecting and analyzing data about fuel quality is possible. Much of the work would be done by computers now used by the Military Departments and Defense Fuel Supply Center (DFSC) for bulk fuels purchased and kept in dormant storage. These are most subject to degradation and contamination by water and impurities. The system would be expanded to include quality-control data for all bulk petroleum purchases. Also recommend is collecting data using decentralized microcomputers; transferring data to a DFSC minicomputer for storage, retrieval, and report generation; and moving data to a computer mainframe when statistical analysis is needed. The task of entering data should be delegated to the petroleum quality organizations of the various Departments, by product type: JP4 for the Air Force, JP5 and F76 for the Navy, and ground fuels for the Army.

Arnberg, R.L.

1987-12-01

400

Developing laminar flow and heat transfer in ducts of arbitrary cross section  

NASA Astrophysics Data System (ADS)

A finite element based numerical calculation procedure was developed for the prediction of developing flow and heat transfer in the entrance regions of arbitrary shaped passages. Details of the development of the model are given, as well as its application to a range of duct cross-sectional geometries to yield in some cases original predictions for friction factors and Nusselt numbers. The calculation procedure uses the finite element method to solve parabolic forms of the Navier Stokes equations over a series of axial finite difference steps. This particular combination of finite elements for the cross plane directions and finite differences for the axial direction yields a computationally efficient marching solution which is particularly suitable for implementation of a mini-computer. Simultaneously developing flow and heat transfer predictions were obtained for circular, rectangular, elliptical, isosceles triangular and sine shaped ducts, generally for a Prandtl number of 0.7 and with the (T), (H1) and (H2) thermal boundary conditions. Comparisons are made with available analytical and experimental results. These comparisons show that the method works well over a range of different geometries, and hence inspires confidence in the predictions for geometries such as the sine duct where no other results are available.

Stainsby, Richard

401

Discounts for dynamic programming with applications in VLSI processor arrays  

SciTech Connect

This dissertation introduces a method for transforming certain dynamic programming problems into ones that require less space and time to solve under the logarithmic cost criterion, an appropriate complexity measure for flexible word-length machines. The mapping is based on discounts that change the costs but not the identities of optimal policies. Under the proper circumstances, the structure present in the original problem is preserved in the image so that the functional equations of dynamic programming still apply. Practical value of the theory is illustrated by demonstrating that a previously published VLSI processor array can be made asymptotically smaller and faster. The second half of this work addresses issues that arise in parallel sequence comparison. The paradigm here is deoxyribonucleic acid (DNA) which maybe considered a string over a four-character alphabet. It is shown how a number of popular sequence matching algorithms can be mapped onto linear arrays of processors. One of these, the Princeton Nucleic Acid Comparator (P-NAC), has been fabricated, tested, and found to work perfectly. Its efficient implementation is due entirely to an application of discounts; benchmark results prove that it is several hundred times faster than a minicomputer.

Lopresti, D.P.

1987-01-01

402

Quantitative scintigraphy with deconvolutional analysis for the dynamic measurement of hepatic function  

SciTech Connect

A mathematical technique known as deconvolutional analysis was used to provide a critical and previously missing element in the computations required to quantitate hepatic function scintigraphically. This computer-assisted technique allowed for the determination of the time required, in minutes, of a labeled bilirubin analog (/sup 99m/Tc-disofenin) to enter the liver via blood and exit via bile. This interval was referred to as the mean transit time (MTT). The critical process provided for by deconvolution is the mathematical simulation of a bolus injection of tracer directly into the afferent blood supply of the liver. The raw data required for this simulation are obtained from the intravenous injection of labeled disofenin, a member of the HIDA family of radiopharmaceuticals. In this study, we perform experiments which document that the simulation process itself is accurate. We then calculate the MTT under a variety of experimental conditions involving progressive hepatic ischemia/reperfusion injury and correlate these results with the results of simultaneously performed BSP determinations and hepatic histology. The experimental group with the most pronounced histologic findings (necrosis, vacuolization, disorganization of hepatic cords) also have the most prolonged MTT and BSP half-life. However, both quantitative imaging and BSP testing are able to identify milder degrees of hepatic ischemic injury not reflected in the histologic evaluation. Quantitative imaging with deconvolutional analysis is a technique easily adaptable to the standard nuclear medicine minicomputer. It provides rapid results and appears to be a sensitive monitor of hepatic functional disturbances resulting from ischemia and reperfusion.

Tagge, E.P.; Campbell, D.A. Jr.; Reichle, R.; Averill, D.R. Jr.; Merion, R.M.; Dafoe, D.C.; Turcotte, J.G.; Juni, J.E.

1987-06-01

403

Computer measurement and representation of the heart in two and three dimensions  

NASA Technical Reports Server (NTRS)

Methods for the measurement and display by minicomputer of cardiac images obtained from fluoroscopy to permit an accurate assessment of functional changes are discussed. Heart contours and discrete points can be digitized automatically or manually, with the recorded image in a video, cine, or print format. As each frame is digitized it is assigned a code name identifying the data source, experiment, run, view, and frame, and the images are filed for future reference in any sequence. Two views taken at the same point in the heart cycle are used to compute the spatial position of the ventricle apex and the midpoint of the aortic valve. The remainder of the points on the chamber border are corrected for the linear distortion of the X-rays by projection to a plane containing the chord between the apex and the aortic valve center and oriented so that lines perpendicular to the chord are parallel to the image intensifier face. The image of the chamber surface is obtained by generating circular cross sections with diameters perpendicular to the major chord. The transformed two- and three-dimensional imagery can be displayed in either static or animated form using a graphics terminal.

Rasmussen, D.

1976-01-01

404

A completely automated PIXE analysis system and its applications  

NASA Astrophysics Data System (ADS)

Using the 3.5 MeV proton beam from a cyclotron, a completely automated PIXE analysis system to determine the concentration of trace elements has been set up. The experimental apparatus consists of a scattering chamber with a remotely controlled automatic target changer and a Si(Li) X-ray detector. A mini-computer with a multichannel analyser is employed to record the X-ray spectrum, to acquire data and perform on-line data processing. By comparing the data recorded the internal standard and a set of reference X-ray spectra, a method of calculating the trace element concentrations and an on-line processing program have been worked out to obtain the final results in a convenient manner. This system has been applied to determine the concentrations of trace elements in lunar rock, in human serum and nucleic acids. Experimental results show that ratio of the concentration of zinc to copper in serum may be used as an important indication of the state of human health.

Ming-chien, Li; Kang-long, Sheng; Po-kang, Chin; Zhi-xiang, Chen; Xue-peng, Wang; Jun-fa, Chin; Ting-wen, Rong; Ming-guang, Tan; Yao-liong, Xu

1981-03-01

405

Development of an enterprise-wide clinical data repository: merging multiple legacy databases.  

PubMed Central

We describe the development of a clinical data repository whose core consists of four years of inpatient administrative and billing data from the mainframe legacy systems of the University of Virginia Health System (UVAHS). To these data we have linked a cardiac surgery clinical database and our physician billing data (inpatient and outpatient). Other databases will be merged in the future. A relational database management system (Sybase) running on a dedicated IBM RS/6000 minicomputer was employed to assemble 2.5 Gigabytes of core data describing approximately 100,000 hospital admissions over the four year period. To enable convenient data queries, the system has been equipped with a custom-built WWW user interface, which generates Structured Query Language (SQL) automatically. We illustrate the rapid reporting capabilities of the resulting system with reference to patients undergoing coronary artery bypass graft surgery (CABG). We conclude that this information system: a) constitutes a convenient and low-cost method to increase data availability across the UVAHS; b) provides clinicians with a tool for surveillance of patient care and outcomes; c) forms the core of a comprehensive database from which clinical research may proceed; d) provides a flexible interface empowering a wide variety of clinical departments to share and enrich their own clinical data.

Scully, K. W.; Pates, R. D.; Desper, G. S.; Connors, A. F.; Harrell, F. E.; Pieper, K. S.; Hannan, R. L.; Reynolds, R. E.

1997-01-01

406

Study of a hybrid multispectral processor  

NASA Technical Reports Server (NTRS)

A hybrid processor is described offering enough handling capacity and speed to process efficiently the large quantities of multispectral data that can be gathered by scanner systems such as MSDS, SKYLAB, ERTS, and ERIM M-7. Combinations of general-purpose and special-purpose hybrid computers were examined to include both analog and digital types as well as all-digital configurations. The current trend toward lower costs for medium-scale digital circuitry suggests that the all-digital approach may offer the better solution within the time frame of the next few years. The study recommends and defines such a hybrid digital computing system in which both special-purpose and general-purpose digital computers would be employed. The tasks of recognizing surface objects would be performed in a parallel, pipeline digital system while the tasks of control and monitoring would be handled by a medium-scale minicomputer system. A program to design and construct a small, prototype, all-digital system has been started.

Marshall, R. E.; Kriegler, F. J.

1973-01-01

407

Software used with the flux mapper at the solar parabolic dish test site  

NASA Technical Reports Server (NTRS)

Software for data archiving and data display was developed for use on a Digital Equipment Corporation (DEC) PDP-11/34A minicomputer for use with the JPL-designed flux mapper. The flux mapper is a two-dimensional, high radiant energy scanning device designed to measure radiant flux energies expected at the focal point of solar parabolic dish concentrators. Interfacing to the DEC equipment was accomplished by standard RS-232C serial lines. The design of the software was dicated by design constraints of the flux-mapper controller. Early attemps at data acquisition from the flux-mapper controller were not without difficulty. Time and personnel limitations result in an alternative method of data recording at the test site with subsequent analysis accomplished at a data evaluation location at some later time. Software for plotting was also written to better visualize the flux patterns. Recommendations for future alternative development are discussed. A listing of the programs used in the anaysis is included in an appendix.

Miyazono, C.

1984-01-01

408

The delta-Sobolev approach for modeling solar spectral irradiance and radiance  

SciTech Connect

The development and evaluation of a solar radiation model is reported, which gives irradiance and radiance results at the bottom and top of an atmosphere of specified optical depth for each of 145 spectral intervals from 0.29 to 4.05 microns. Absorption by water vapor, aerosols, ozone, and uniformly mixed gases; scattering by molecules and aerosols; and non-Lambertian surface reflectance are included in the model. For solving the radiative transfer equation, an innovative delta-Sobolev method is developed. It applies a delta-function modification to the conventional Sobolev solutions in a way analogous to the delta-Eddington method. The irradiance solution by the delta-Sobolev method turns out to be mathematically identical to the delta-Eddington approximation. The radiance solution by the delta-Sobolov method provides a convenient way to obtain the directional distribution pattern of the radiation transfer field, a feature unable to be obtained by most commonly used approximation methods. Such radiance solutions are also especially useful in models for satellite remote sensing. The model is tested against the rigorous Dave model, which solves the radiation transfer problem by the spherical harmonic method, an accurate but very time consuming process. Good agreement between the current model results and those of Dave's model are observed. The advantages of the delta-Sobolev model are simplicity, reasonable accuracy and capability for implementation on a minicomputer or microcomputer.

Xiang, Xuwu.

1990-01-01

409

An interferometric strain-displacement measurement system  

NASA Technical Reports Server (NTRS)

A system for measuring the relative in-plane displacement over a gage length as short as 100 micrometers is described. Two closely spaced indentations are placed in a reflective specimen surface with a Vickers microhardness tester. Interference fringes are generated when they are illuminated with a He-Ne laser. As the distance between the indentations expands or contracts with applied load, the fringes move. This motion is monitored with a minicomputer-controlled system using linear diode arrays as sensors. Characteristics of the system are: (1) gage length ranging from 50 to 500 micrometers, but 100 micrometers is typical; (2) least-count resolution of approximately 0.0025 micrometer; and (3) sampling rate of 13 points per second. In addition, the measurement technique is non-contacting and non-reinforcing. It is useful for strain measurements over small gage lengths and for crack opening displacement measurements near crack tips. This report is a detailed description of a new system recently installed in the Mechanisms of Materials Branch at the NASA Langley Research Center. The intent is to enable a prospective user to evaluate the applicability of the system to a particular problem and assemble one if needed.

Sharpe, William N., Jr.

1989-01-01

410

Control rod calibration including the rod coupling effect  

SciTech Connect

In a reactor containing more than one control rod, which includes all reactors licensed in the United States, there will be a 'coupling' or 'shadowing' of control rod flux at the location of a control rod as a result of the flux depression caused by another control rod. It was decided to investigate this phenomenon further, and eventually to put calibration table data or formulae in a small computer in the control room, so once could insert the positions of the three control rods and receive the excess reactivity without referring to separate tables. For this to be accomplished, a 'three control- rod reactivity function' would be used which would include the flux coupling between the rods. The function is design and measured data was fitted into it to determine the calibration constants. The input data for fitting the trial functions consisted of 254 data points, each consisting of the position of the reg, shim, and transient rods, and the total excess reactivity. (About 200 of these points were 'critical balance points', that is the rod positions for which reactor was critical, and the remainder were determined by positive period measurements.) Although this may be unrealistic from a physical viewpoint, the function derived gave a very accurate recalculation of the input data, and thus would faithfully give the excess reactivity for any possible combination of the locations of the three control rods. The next step, incorporation of the three-rod function into the minicomputer, will be pursued in the summer and fall of 1984.

Szilard, R.; Nelson, G.W. [University of Arizona, Tucson, AZ (United States)

1984-07-01

411

Fluctuations in tension during contraction of single muscle fibers.  

PubMed Central

We have searched for fluctuations in the steady-state tension developed by stimulated single muscle fibers. Such tension "noise" is expected to be present as a result of the statistical fluctuations in the number and/or state of myosin cross-bridges interacting with thin filament sites at any time. A sensitive electro-optical tension transducer capable of resolving the expected fluctuations in magnitude and frequency was constructed to search for the fluctuations. The noise was analyzed by computing the power spectra and amplitude of stochastic fluctuations in the photomultiplier counting rate, which was made proportional to muscle force. The optical system and electronic instrumentation together with the minicomputer software are described. Tensions were measured in single skinned glycerinated rabbit psoas muscle fibers in rigor and during contraction and relaxation. The results indicate the presence of fluctuations in contracting muscles and a complete absence of tension noise in eith rigor or relaxation. Also, a numerical method was developed to simulate the power spectra and amplitude of fluctuations, given the rate constants for association and dissociation of the cross-bridges and actin. The simulated power spectra and the frequency distributions observed experimentally are similar.

Borejdo, J; Morales, M F

1977-01-01

412

From Past Issues: The More Things Change...  

NASA Astrophysics Data System (ADS)

Though computers were still housed in large, air-conditioned rooms and were often programmed via decks of punched cards, a number of chemists were making effective use of them in teaching as well as research. Eight papers in this issue reported on computer programs. Castleberry, Culp, and Lagowski described an educational experiment in which the effectiveness of computer-based instruction was evaluated in a general chemistry course. Breneman reported on minicomputer-aided instruction, and others described programs that normalized grades, calculated heats of combustion, analyzed results of physical chemistry experiments, solved secular equations, calculated mass spectra, and calculated rate constants. Output devices were usually character based and graphics were rudimentary, as exemplified by the teletype plots of hydrogenic orbitals shown above. The editorial, "On Abandoning Grading and Reconsidering Standards" advocated neither and presented four arguments for maintaining traditional standards and realistic grades. This immediately followed half a decade when poor grades might result in being drafted and serving in Vietnam and student protests were based on government policy rather than whether or not to enforce rules against student drinking. Editor Lippincott pointed out that after several years few students return to thank a professor for making things easy, but many express appreciation for challenges that proved they could do more than they thought they could.

1998-07-01

413

SCAILET: An intelligent assistant for satellite ground terminal operations  

NASA Technical Reports Server (NTRS)

NASA Lewis Research Center has applied artificial intelligence to an advanced ground terminal. This software application is being deployed as an experimenter interface to the link evaluation terminal (LET) and was named Space Communication Artificial Intelligence for the Link Evaluation Terminal (SCAILET). The high-burst-rate (HBR) LET provides 30-GHz-transmitting and 20-GHz-receiving, 220-Mbps capability for wide band communications technology experiments with the Advanced Communication Technology Satellite (ACTS). The HBR-LET terminal consists of seven major subsystems. A minicomputer controls and monitors these subsystems through an IEEE-488 or RS-232 protocol interface. Programming scripts (test procedures defined by design engineers) configure the HBR-LET and permit data acquisition. However, the scripts are difficult to use, require a steep learning curve, are cryptic, and are hard to maintain. This discourages experimenters from utilizing the full capabilities of the HBR-LET system. An intelligent assistant module was developed as part of the SCAILET software. The intelligent assistant addresses critical experimenter needs by solving and resolving problems that are encountered during the configuring of the HBR-LET system. The intelligent assistant is a graphical user interface with an expert system running in the background. In order to further assist and familiarize an experimenter, an on-line hypertext documentation module was developed and included in the SCAILET software.

Shahidi, A. K.; Crapo, J. A.; Schlegelmilch, R. F.; Reinhart, R. C.; Petrik, E. J.; Walters, J. L.; Jones, R. E.

1993-01-01

414

Peripheral processors for high-speed simulation. [helicopter cockpit simulator  

NASA Technical Reports Server (NTRS)

This paper describes some of the results of a study directed to the specification and procurement of a new cockpit simulator for an advanced class of helicopters. A part of the study was the definition of a challenging benchmark problem, and detailed analyses of it were made to assess the suitability of a variety of simulation techniques. The analyses showed that a particularly cost-effective approach to the attainment of adequate speed for this extremely demanding application is to employ a large minicomputer acting as host and controller for a special-purpose digital peripheral processor. Various realizations of such peripheral processors, all employing state-of-the-art electronic circuitry and a high degree of parallelism and pipelining, are available or under development. The types of peripheral processors array processors, simulation-oriented processors, and arrays of processing elements - are analyzed and compared. They are particularly promising approaches which should be suitable for high-speed simulations of all kinds, the cockpit simulator being a case in point.

Karplus, W. J.

1977-01-01

415

ERS-1 SAR data processing  

NASA Technical Reports Server (NTRS)

To take full advantage of the synthetic aperature radar (SAR) to be flown on board the European Space Agency's Remote Sensing Satellite (ERS-1) (1989) and the Canadian Radarsat (1990), the implementation of a receiving station in Alaska is being studied to gather and process SAR data pertaining in particular to regions within the station's range of reception. The current SAR data processing requirement is estimated to be on the order of 5 minutes per day. The Interim Digital Sar Processor (IDP) which was under continual development through Seasat (1978) and SIR-B (1984) can process slightly more than 2 minutes of ERS-1 data per day. On the other hand, the Advanced Digital SAR Processore (ADSP), currently under development for the Shuttle Imaging Radar C (SIR-C, 1988) and the Venus Radar Mapper, (VMR, 1988), is capable of processing ERS-1 SAR data at a real time rate. To better suit the anticipated ERS-1 SAR data processing requirement, both a modified IDP and an ADSP derivative are being examined. For the modified IDP, a pipelined architecture is proposed for the mini-computer plus array processor arrangement to improve throughout. For the ADSP derivative, a simplified version is proposed to enhance ease of implementation and maintainability while maintaing real time throughput rates. These processing systems are discussed and evaluated.

Leung, K.; Bicknell, T.; Vines, K.

1986-01-01

416

[Analysis of fatty acid composition of spotted fever group rickettsiae isolated in China by gas chromatography].  

PubMed

In present paper, fatty acid composition of seven Chinese isolates of SFG rickettsiae and six prototype strains of SFG rickettsiae were analyzed by GC-MS. Tested prototype strains of SFG rickettsiae were R. sibirica (strains 232 and 246), R. conorii (Simko), R. rickettsi (R), R. akari (Kaplan), R. australis (W58); Chinese isolates were An-84, Se-85, W-88 (human strain), MT-84, FT-84 (D. nuttalli strain), TO-85 (ova of nuttalli) and Chinese reference strain -JH-74 (D. nuttalli). They were propagated in yolk sacs of embryonated hen eggs and purified by centrifugation in a 30%-36%-42% discontinuous renografin density gradient. The fatty acid composition of selected strains of SFG rickettsiae was analyzed by gas chromatography, and then comparison being carried out by single linkage on mini-computer. Identification of the strains was performed based on the results obtained from GC-MS. Results showed that the fatty acid profiles of all the isolates from China were quantitatively similar to that of R. sibirica and quite different from other prototype strains of SFG rickettsiae. PMID:8256442

Zhou, L; Fan, M; Chen, J; Cai, H; Zhou, F; Zhu, H

1993-08-01

417

Sex difference in the pattern of lower limb movement during treadmill walking.  

PubMed

To evaluate the characteristics of stereo-typed movement of the lower limb during treadmill walking, the step length and duration of 200 steps were monitored consecutively and calculated by means of a computerized system, consisting of a position sensor, shoes with foot switches and a minicomputer. Eleven male and 10 female subjects walked at various constant speeds ranging from 60-130 m.min-1. Mean, standard deviation (SD) and coefficient of variation (CV) of the time-distance component at each speed were utilized for the assessment of stereotyped movement. When compared with males, females had a tendency to increase their speed by increasing their cadence. The difference of the walking pattern was specifically related to their height. The SD and CV of the time-distance component at a given speed were significantly greater in females than in males. Regression analyses revealed that in the relationship between the walking speeds and the SDs or CVs of the time-distance component, the significant quadratic equations could be fitted. The speed, at which the SD of step length was minimum, was estimated to be about 90 m.min-1 in both males and females. This was regarded as the free walking speed or as the walking speed resulting from a mechanically efficient step length which suited the subject's body size. PMID:2022210

Yamasaki, M; Sasaki, T; Torii, M

1991-01-01

418

Self-tuning adaptive-controller using online frequency identification  

NASA Technical Reports Server (NTRS)

A real time adaptive controller was designed and tested successfully on a fourth order laboratory dynamic system which features very low structural damping and a noncolocated actuator sensor pair. The controller, implemented in a digital minicomputer, consists of a state estimator, a set of state feedback gains, and a frequency locked loop (FLL) for real time parameter identification. The FLL can detect the closed loop natural frequency of the system being controlled, calculate the mismatch between a plant parameter and its counterpart in the state estimator, and correct the estimator parameter in real time. The adaptation algorithm can correct the controller error and stabilize the system for more than 50% variation in the plant natural frequency, compared with a 10% stability margin in frequency variation for a fixed gain controller having the same performance at the nominal plant condition. After it has locked to the correct plant frequency, the adaptive controller works as well as the fixed gain controller does when there is no parameter mismatch. The very rapid convergence of this adaptive system is demonstrated experimentally, and can also be proven with simple root locus methods.

Chiang, W. W.; Cannon, R. H., Jr.

1985-01-01

419

Software used with the flux mapper at the solar parabolic dish test site  

NASA Astrophysics Data System (ADS)

Software for data archiving and data display was developed for use on a Digital Equipment Corporation (DEC) PDP-11/34A minicomputer for use with the JPL-designed flux mapper. The flux mapper is a two-dimensional, high radiant energy scanning device designed to measure radiant flux energies expected at the focal point of solar parabolic dish concentrators. Interfacing to the DEC equipment was accomplished by standard RS-232C serial lines. The design of the software was dicated by design constraints of the flux-mapper controller. Early attemps at data acquisition from the flux-mapper controller were not without difficulty. Time and personnel limitations result in an alternative method of data recording at the test site with subsequent analysis accomplished at a data evaluation location at some later time. Software for plotting was also written to better visualize the flux patterns. Recommendations for future alternative development are discussed. A listing of the programs used in the anaysis is included in an appendix.

Miyazono, C.

1984-09-01

420

The ORNL 25 MV tandem accelerator control system  

NASA Astrophysics Data System (ADS)

The CAMAC-based control system for the 25 MV tandem electrostatic accelerator of the Holifield Heavy Ion Research Facility at Oak Ridge National Laboratory (ORNL) was specified by ORNL and built by the National Electrostatics Corporation. Two Perkin-Elmer 32-bit minicomputers are used in the system: a message switching computer and a supervisory computer. The message switching computer transmits and receives control information on six serial highways. This computer shares memory with the supervisory computer. Operator consoles are located on a serial highway; control is by means of a console CRT, trackball, and assignable shaft encoders and meters. Two identical consoles operate simultaneously: one is located in the tandem control room; the other is located in the cyclotron control room to facilitate operation during injection of tandem beams into the cyclotron or when beam lines under control of the cyclotron control system are used. The supervisory computer is used for accelerator parameter setup calculations, actual accelerator setup for new beams based on scaled, recorded parameters from previously run beams, and various other functions. The experience of nearly seven years of control system operation and improvements is discussed.

Juras, Raymond C.; Biggerstaff, John A.; Hoglund, David E.

1986-06-01

421

David Florida Laboratory Thermal Vacuum Data Processing System  

NASA Technical Reports Server (NTRS)

During 1991, the Space Simulation Facility conducted a survey to assess the requirements and analyze the merits for purchasing a new thermal vacuum data processing system for its facilities. A new, integrated, cost effective PC-based system was purchased which uses commercial off-the-shelf software for operation and control. This system can be easily reconfigured and allows its users to access a local area network. In addition, it provides superior performance compared to that of the former system which used an outdated mini-computer and peripheral hardware. This paper provides essential background on the old data processing system's features, capabilities, and the performance criteria that drove the genesis of its successor. This paper concludes with a detailed discussion of the thermal vacuum data processing system's components, features, and its important role in supporting our space-simulation environment and our capabilities for spacecraft testing. The new system was tested during the ANIK E spacecraft test, and was fully operational in November 1991.

Choueiry, Elie

1994-01-01

422

Digital computer analysis of M-scan echocardiograms.  

PubMed

In the past few years, echocardiography has emerged as a useful noninvasive clinical tool in cardiac diagnosis. Conventional methods for analyzing echocardiographic data involve time consuming and tedious manual techniques for measuring various distances and computing cardiac parameters of interest. This paper describes a useful method for automating the analysis of M scan echocardiograms both for routine clinical work as well as for special research oriented ultrasonic cardiac studies. Using a GRAF/PEN digitizer interfaced to a PDP-11 minicomputer system, relevant points of the ventricular and mitral valve interfaces, R-R intervals, and time and distance calibration points are entered from hard copies of M scan echocardiograms. The computer then determines all the parameters of interest such as left ventricular (LV) diameters, LV volumes, LV mass, ejection fraction, stroke volume, cardiac output, septal and posterior wall dynamics, as well as such mitral valve (MV) parameters as opening/closing velocities, excursions, and areas subtended by both MV leaflets. The data and results are stored on disc or tape and a report of the results is immediately available from a printer for incorporation into the patient's record file. PMID:818116

Pai, A L; Cahill, N S; Dubroff, R J; Fozzard, H A; Brooks, H L

1976-06-01

423

Development of a toxin knowledge system. Annual summary report, 6 April 1988-1 December 1989  

SciTech Connect

To provide rapidly accessible, up-to-date knowledge about low molecular weight toxins, the development of a Toxin Knowledge System (TKS) was begun. This system was designed to extract facts from published literature using structured abstracting techniques, store these facts in a standard knowledge structure, control the terminology entered through the use of a standard nomenclature system, and subsequently generate standard monographs on individual toxins. The system was developed using a relational database management system and associated programming language on a minicomputer. The TKS application facilitates the extraction of needed information through a sophisticated user interface. Data from both journals and books can be entered into the system. The user enters citation data and is then prompted for information about each study design, each subject group and exposure regimen within each design, and how these factors interact to produce clinical effects. A clinical findings vocabulary was developed so that clinical effects could be easily recorded. Rudamentary monograph generation capabilities were included but need further refinement. To facilitate USAMRIID usage and further development, the TKS application, the clinical finding vocabulary, and journal listing vocabulary was been ported to the MS-DOS platform.

Trammel, H.L.

1990-10-20

424

[Medical data in pathology--evaluation of a large collection. (530,000 diagnoses coded in SNOMED II)].  

PubMed

The paper is describing the design and the performance of the computerized system, from its introduction in 1982 until the present day. The first device, using the MUMPS language on a mini-computer, followed by a VAX computer with terminals have been replaced in 1996 by an application program, using ORACLE, based on the client-server concept. The content and the particularities of the different data groups are discussed, concerning the functional components of the data bank: 'PATIENTS', 'SPECIMEN', 'SENDERS', 'REPORT' and 'DIAGNOSES'. By means of examples, we demonstrate the chronological evolution of the registration of persons, the distribution of the diagnoses according to the organ systems, the possibilities to combine various lesions and an algorithm to assure that a given lesion is registered only once per patient. In first place, the efficiency and the reliability of manual coding by a pathologist using the Systematized Nomenclature of Medicine (SNOMED; 2nd edition [1979/1982]) is discussed. The data bank currently contains 530,000 diagnoses, distributed among on SNOMED's five main modules, obtained from 1500 autopsies, 140,000 surgical and 180,000 cytological specimens. Concluding the article, an analysis is made of desirable developments in the future with the aim of a better integration of the acquired information in routine work and an enhanced use of the medical content for epidemiological research or statistical analysis. PMID:10582493

Baumann, R P

1999-10-01

425

Combined staining procedures for cytophotometry of protein and DNA Feulgen-Naphthol Yellow S and dinitrofluorobenzene-Feulgen.  

PubMed

A comparison has been made between dinitrofluorobenzene (DNFB) and Naphthol Yellow S (NYS) as protein stains in combination with the pararosaniline-SO2 Feulgen procedure. Chicken erythrocytes were used as test cells. Cytophotometric measurements were made using a Zeiss scanning stage cytophotometer coupled to a PDP 11/10 minicomputer using the BICOSCAN program to obtain values for protein per cell, protein per "nuclear area' and DNA per nucleus. With 5N HCl as the Feulgen hydrolysis agent, DNFB staining, applied before the Feulgen procedure, was found to be unaffected by hydrolysis conditions required to give optimum Feulgen staining and showed only small losses after longer hydrolysis times. On the other hand measurements of NYS staining, of necessity applied after the Feulgen procedure, seem to be susceptible to the duration of Feulgen hydrolysis. This susceptibility is probably due to the interaction of the DNA phosphates with the basic amino acid residues, potential binding sites for NYS. Since the degree of this interaction may be variable, it is argued that NYS binding will measure the available basicity of proteins at the time of staining but no specific protein fraction. DNFB binding is unaffected by DNA-protein interactions and therefore can give a more reliable measure of "nuclear' protein, particularly in conjunction with Feulgen-DNA measurements. PMID:6173352

Mitchell, J P; Van der Ploeg, M; van Duijn, P

1981-01-01

426

Optical design and analysis program.  

PubMed

An optical design and analysis program structured for operation on a minicomputer has been developed at NRC (National Research Council of Canada). It has been designed to be used interactively giving the user both flexibility and ease of operation. The computer on which it runs at present is a Digital PDP11 with a memory of around 28K, and this represents a great saving in computer costs when compared with those of a large computer upon which most lens design work is carried out. This program has capabilities for optimizing a lens system, for pupil exploration, for fitting the computed wavefront aberration to a polynomial, and for evaluating the diffraction optical transfer function. Although only ten finite rays are traced in the optimization routine, the aberrations computed, together with the Seidel aberrations obtained from the paraxial ray trace, provide the user with adequate control of the aberrations over both aperture and field. A Double Gauss and a Maksutov-Cassegrain system are used as practical examples to illustrate this. PMID:20203985

Powell, I

1978-11-01

427

Consistency versus completeness in medical decision-making: exemplar of 155 patients autopsied after coronary artery bypass graft surgery.  

PubMed

Diagnoses made at autopsy are usually yes-no (binary) decisions inferred from clinicopathologic data. A major conceptual problem in determining cause of death is that variables used in classifying some patients may be missing in other patients. A model with too few logical implications will be mathematically incomplete for small data sets; but a model with too many implications may be inconsistent with large data sets. We examined the 155 patients autopsied after coronary artery bypass surgery from The Johns Hopkins Hospital autopsy data base of 43,200 cases. Diagnoses entered on a word processor and transmitted to a minicomputer were solved by the Quine-McCluskey algorithm. Our analysis disclosed that 41% of patients suffered a fatal complication of cardiac surgery; 43% had established surgical complications or unrelated causes of death; and in 17% of cases the cause of death was unexplained. Computerized symbolic logic analysis of medical information is useful in testing the completeness of a proposed set of causes of death. PMID:6336306

Moore, G W; Hutchins, G M

1983-01-01

428

Integration of autonomous systems for remote control of data acquisition and diagnostics in the TJ-II device  

SciTech Connect

The data acquisition system for TJ-II will consist of a central computer, containing the data base of the device, and a set of independent systems (personal computers, embedded ones, workstations, minicomputers, PLCs, and microprocessor systems among others), controlling data collection, and automated diagnostics. Each autonomous system can be used to isolate and manage specific problems in the most efficient manner. These problems are related to data acquisition, hard ({mu}s{endash}ms) real time requirements, soft (ms{endash}s) real time requirements, remote control of diagnostics, etc. In the operation of TJ-II, the programming of systems will be carried out from the central computer. Coordination and synchronization will be performed by linking systems to local area networks. Several Ethernet segments and FDDI rings will be used for these purposes. Programmable logic controller devices (PLCs) used for diagnostic low level control will be linked among them through a fast serial link, the RS485 Profibus standard. One VME crate, running on the OS-9 real time operating system, will be assigned as a gateway, so as to connect the PLCs based systems with an Ethernet segment. {copyright} {ital 1997 American Institute of Physics.}

Vega, J.; Mollinedo, A.; Lopez, A.; Pacios, L. [Asociacion EURATOM/CIEMAT para Fusion, Avda, Complutense, 22.28040 Madrid (Spain)] [Asociacion EURATOM/CIEMAT para Fusion, Avda, Complutense, 22.28040 Madrid (Spain); Dormido, S. [Dpto. Informatica y Automatica, Facultad de Ciencias, UNED, Avda, Senda del Rey s/n, 28040 Madrid (Spain)] [Dpto. Informatica y Automatica, Facultad de Ciencias, UNED, Avda, Senda del Rey s/n, 28040 Madrid (Spain)

1997-01-01

429

Spent Fuel Test - Climax data acquisition system operations manual  

SciTech Connect

The Spent Fuel Test-Climax (SFT-C) is a test of the retrievable, deep geologic storage of commercially generated, spent nuclear reactor fuel in granite rock. Eleven spent fuel assemblies, together with 6 electrical simulators and 20 guard heaters, are emplaced 420 m below the surface in the Climax granite at the US Department of Energy Nevada Test Site. On June 2, 1978, Lawrence Livermore National Laboratory (LLNL) secured funding for the SFT-C, and completed spent fuel emplacement May 28, 1980. The multi-year duration test is located in a remote area and is unattended much of the time. An extensive array of radiological safety and geotechnical instrumentation is deployed to monitor the test performance. A dual minicomputer-based data acquisition system (DAS) collects and processes data from more than 900 analog instruments. This report documents the software element of the LLNL developed SFT-C Data Acquisition System. It defines the operating system and hardware interface configurations, the special applications software and data structures, and support software.

Nyholm, R.A.

1983-01-01

430

Spent fuel test. Climax data acquisition system integration report  

SciTech Connect

The Spent Fuel Test - Climax (SFT-C) is a test of the retrievable, deep geologic storage of commercially generated, spent nuclear reactor fuel in granitic rock. Eleven spent fuel assemblies, together with 6 electrical simulators and 20 guard heaters, are emplaced 420 m below the surface in the Climax granite at the Nevada Test Site. On June 2, 1978, Lawrence Livermore National Laboratory (LLNL) secured funding for the SFT-C, and completed spent fuel emplacement May 28, 1980. This multi-year duration test is located in a remote area and is unattended much of the time. An extensive array of radiological safety and geotechnical instrumentation is deployed to monitor the test performance. A dual minicomputer-based data acquisition system collects and processes data from more than 900 analog instruments. This report documents the design and functions of the hardware and software elements of the Data Acquisition System and describes the supporting facilities which include environmental enclosures, heating/air-conditioning/humidity systems, power distribution systems, fire suppression systems, remote terminal stations, telephone/modem communications, and workshop areas. 9 figures.

Nyholm, R.A.; Brough, W.G.; Rector, N.L.

1982-06-01

431

Managing for the next big thing. Interview by Paul Hemp.  

PubMed

In this HBR interview, CEO Michael Ruettgers speaks in detail about the managerial practices that have allowed EMC to anticipate and exploit disruptive technologies, market opportunities, and business models ahead of its competitors. He recounts how the company repeatedly ventured into untested markets, ultimately transforming itself from a struggling maker of minicomputer memory boards into a data storage powerhouse and one of the most successful companies of the past decade. The company has achieved sustained and nearly unrivaled revenue, profit, and shareprice growth through a number of means. Emphasizing timing and speed, Ruettgers says, is critical. That's meant staggering products rather than developing them sequentially and avoiding the excessive refinements that slow time to market. Indeed, a sense of urgency, Ruettgers explains, has been critical to EMC's success. Processes such as quarterly goal setting and monthly forecasting meetings help maintain a sense of urgency and allow managers to get early glimpses of changes in the market. So does an environment in which personal accountability is stressed and the corporate focus is single-minded. Perhaps most important, the company has procedures to glean insights from customers. Intensive forums involving EMC engineers and leading-edge customers, who typically push for unconventional solutions to their problems, often yield new product features. Similarly, a customer service system that includes real-time monitoring of product use enables EMC to understand customer needs firsthand. PMID:11189457

Ruettgers, M

2001-01-01

432

Transferring ecosystem simulation codes to supercomputers  

NASA Technical Reports Server (NTRS)

Many ecosystem simulation computer codes have been developed in the last twenty-five years. This development took place initially on main-frame computers, then mini-computers, and more recently, on micro-computers and workstations. Supercomputing platforms (both parallel and distributed systems) have been largely unused, however, because of the perceived difficulty in accessing and using the machines. Also, significant differences in the system architectures of sequential, scalar computers and parallel and/or vector supercomputers must be considered. We have transferred a grassland simulation model (developed on a VAX) to a Cray Y-MP/C90. We describe porting the model to the Cray and the changes we made to exploit the parallelism in the application and improve code execution. The Cray executed the model 30 times faster than the VAX and 10 times faster than a Unix workstation. We achieved an additional speedup of 30 percent by using the compiler's vectoring and 'in-line' capabilities. The code runs at only about 5 percent of the Cray's peak speed because it ineffectively uses the vector and parallel processing capabilities of the Cray. We expect that by restructuring the code, it could execute an additional six to ten times faster.

Skiles, J. W.; Schulbach, C. H.

1995-01-01

433

Applications manual for analyzing landfill methane-recovery data using the Computer Analysis of Field Data (CAFD) interactive graphics system  

SciTech Connect

Computer Analysis of Field Data (CAFD) is an interactive computer software system that was developed to analyze and display data obtained during field monitoring studies associated with recovery of methane from landfills. The software is written in Basic for use on a Tektronix 4054 dynamic graphics minicomputer and display terminal. Required peripherals include a single floopy disk drive, a digitizing tablet, a hard-copy unit, and an x-y plotter. The analysis portion of the software compares and statistically correlates data sets and performs interpolation and filtering of data as a function of time. The display portion of the software presents data at particular sampling points as a function of time and presents contour and olbique plots of data at sampling points located in a two-dimensional grid pattern. The applications manual contains four separate but interrelated sections: an engineer's application guide, an overview of the CAFD interactive graphics system, and operator's manual, and instructions for creating data files and site maps.

Not Available

1982-07-01

434

Real-time measurement of plutonium in air by direct-inlet surface ionization mass spectrometry. Status report  

SciTech Connect

A new technique is being developed for monitoring low-level airborne plutonium on a real-time basis. The technique is based on surface ionization mass spectrometry of airborne particles. It will be capable of measuring plutonium concentrations below the maximum permissible concentration (MPC) level. A complete mass spectrometer was designed and constructed for this purpose. Major components which were developed and made operational for the instrument include an efficient inlet for directly sampling particles in air, a wide dynamic range ion detector and a minicomputer-based ion-burst measurement system. Calibration of the direct-inlet mass spectrometer (DIMS) was initiated to establish the instrument's response to plutonium dioxide as a function of concentration and particle size. This work revealed an important problem - bouncing of particles upon impact with the ionizing filament. Particle bounce results in a significant loss of measurement sensitivity. The feasibility of using an oven ionizer to overcome the particle bounce problem has been demonstrated. A rhenium oven ionizer was designed and constructed for the purpose of trapping particles which enter via the direct inlet. High-speed particles were trapped in the oven yielding a measurement sensitivity comparable to that for particles which are preloaded. Development of the Pu DIMS can now be completed by optimizing the oven design and calibrating the instrument's performance with UO/sub 2/ and CeO/sub 2/ particles as analogs to PuO/sub 2/ particles.

Stoffels, J.J.

1980-04-01

435

Integration and software for thermal test of heat rate sensors. [space shuttle external tank  

NASA Technical Reports Server (NTRS)

A minicomputer controlled radiant test facility is described which was developed and calibrated in an effort to verify analytical thermal models of instrumentation islands installed aboard the space shuttle external tank to measure thermal flight parameters during ascent. Software was provided for the facility as well as for development tests on the SRB actuator tail stock. Additional testing was conducted with the test facility to determine the temperature and heat flux rate and loads required to effect a change of color in the ET tank external paint. This requirement resulted from the review of photographs taken of the ET at separation from the orbiter which showed that 75% of the external tank paint coating had not changed color from its original white color. The paint on the remaining 25% of the tank was either brown or black, indicating that it had degraded due to heating or that the spray on form insulation had receded in these areas. The operational capability of the facility as well as the various tests which were conducted and their results are discussed.

Wojciechowski, C. J.; Shrider, K. R.

1982-01-01

436

An experimental search for near-wall boundary conditions for large eddy simulation  

NASA Technical Reports Server (NTRS)

Instantaneous wall shear stress and streamwise velocities have been measured simultaneously in a flat plate, turbulent boundary layer at moderate Reynolds number in an effort to provide experimental support for large eddy simulations. Data were obtained by using a buried-wire wall shear gage and a hot-wire rake positioned in the log region of the flow. All data processing was accomplished with digital data analysis techniques on a minicomputer. Fluctuations of the instantaneous U plus versus Y plus profiles about a mean law of the wall are shown to be significant and complex. Peak cross-correlation values between wall shear stress and the velocities are high and reflect the passage of a large structure inclined at a small angle to the wall. Estimates of this angle are consistent with those made by other investigators. Conditional sampling techniques were used to detect the passage of various sizes and types of flow disturbances (events) and to estimate their mean frequency of occurrence. Events characterized by large and sudden streamwise accelerations were found to be highly coherent throughout the log region and were strongly correlated with large fluctuations in wall shear-stress. Phase randomness between the near-wall quantities and the outer velocities was small. The results suggest that the flow events detected by conditional sampling applied to velocities in the log region may be related to the bursting process.

Robinson, S. K.

1982-01-01

437

Compact, high-speed algorithm for laying out printed circuit board runs  

NASA Astrophysics Data System (ADS)

A high speed printed circuit connection layout algorithm is described which was developed within the framework of an interactive system for designing two-sided printed circuit broads. For this reason, algorithm speed was considered, a priori, as a requirement equally as important as the inherent demand for minimizing circuit run lengths and the number of junction openings. This resulted from the fact that, in order to provide psychological man/machine compatibility in the design process, real-time dialog during the layout phase is possible only within limited time frames (on the order of several seconds) for each circuit run. The work was carried out for use on an ARM-R automated work site complex based on an SM-4 minicomputer with a 32K-word memory. This limited memory capacity heightened the demand for algorithm speed and also tightened data file structure and size requirements. The layout algorithm's design logic is analyzed. The structure and organization of the data files are described.

Zapolotskiy, D. Y.

1985-09-01

438

In-phase and out-of-phase axial-torsional fatigue behavior of Haynes 188 at 760 C  

NASA Technical Reports Server (NTRS)

Isothermal, in-phase and out-of-phase axial-torsional fatigue experiments have been conducted at 760 C on uniform gage section, thin-walled tubular specimens of a wrought cobalt-base superalloy, Haynes 188. Test-control and data acquisition were accomplished with a minicomputer. Fatigue lives of the in- and out-of-phase axial-torsional fatigue tests have been estimated with four different multiaxial fatigue life prediction models that were developed primarly for predicting axial-torsional fatigue lives at room temperature. The models investigated were: (1) the von Mises equivalent strain range; (2) the Modified Multiaxiality Factor Approach; (3) the Modified Smith-Watson-Topper Parameter; and (4) the critical shear plane method of Fatemi, Socie, and Kurath. In general, life predictions by the von Mises equivalent strain range model were within a factor of 2 for a majority of the tests and the predictions by the Modified Multiaxiality Factor Approach were within a factor of 2, while predictions of the Modified Smith-Watson-Topper Parameter and of the critical shear plane method of Fatemi, Socie, and Kurath were unconservative and conservative, respectively, by up to factors of 4. In some of the specimens tested under combined axial-torsional loading conditions, fatigue cracks initiated near extensometer indentations. Two design modifications have been proposed to the thin-walled tubular specimen to overcome this problem.

Kalluri, Sreeramesh; Bonacuse, Peter J.

1991-01-01

439

Augmented burst-error correction for UNICON laser memory. [digital memory  

NASA Technical Reports Server (NTRS)

A single-burst-error correction system is described for data stored in the UNICON laser memory. In the proposed system, a long fire code with code length n greater than 16,768 bits was used as an outer code to augment an existing inner shorter fire code for burst error corrections. The inner fire code is a (80,64) code shortened from the (630,614) code, and it is used to correct a single-burst-error on a per-word basis with burst length b less than or equal to 6. The outer code, with b less than or equal to 12, would be used to correct a single-burst-error on a per-page basis, where a page consists of 512 32-bit words. In the proposed system, the encoding and error detection processes are implemented by hardware. A minicomputer, currently used as a UNICON memory management processor, is used on a time-demanding basis for error correction. Based upon existing error statistics, this combination of an inner code and an outer code would enable the UNICON system to obtain a very low error rate in spite of flaws affecting the recorded data.

Lim, R. S.

1974-01-01

440

Ferromagnetism in doped or undoped spintronics nanomaterials  

NASA Astrophysics Data System (ADS)

Much interest has been sparked by the discovery of ferromagnetism in a range of oxide doped and undoped semiconductors. The development of ferromagnetic oxide semiconductor materials with giant magnetoresistance (GMR) offers many advantages in spintronics devices for future miniaturization of computers. Among them, TM-doped ZnO is an extensively studied n-type wide-band-gap (3.36 eV) semiconductor with a tremendous interest as future mini-computer, blue light emitting, and solar cells. In this talk, Co-doped ZnO and Co-doped Cu2O semiconductor nanoclusters are successfully synthesized by a third generation sputtering-gas-aggregation cluster technique. The Co-doped nanoclusters are ferromagnetic with Curie temperature above room temperature. Both of Co-doped nanoclusters show positive magnetoresistance (PMR) at low temperature, but the amplitude of the PMRs shows an anomalous difference. For similar Co doping concentration at 5 K, PMR is greater than 800% for Co-doped ZnO but only 5% for Co-doped Cu2O nanoclusters. Giant PMR in Co-doped ZnO which is attributed to large Zeeman splitting effect has a linear dependence on applied magnetic field with very high sensitivity, which makes it convenient for the future spintronics applications. The small PMR in Co-doped Cu2O is related to its vanishing density of states at Fermi level. Undoped Zn/ZnO core-shell nanoparticle gives high ferromagnetic properties above room temperature due to the defect induced magnetization at the interface.

Qiang, You

2010-10-01

441

The digital geologic map of Colorado in ARC/INFO format  

USGS Publications Warehouse

This geologic map was prepared as a part of a study of digital methods and techniques as applied to complex geologic maps. The geologic map was digitized from the original scribe sheets used to prepare the published Geologic Map of Colorado (Tweto 1979). Consequently the digital version is at 1:500,000 scale using the Lambert Conformal Conic map projection parameters of the state base map. Stable base contact prints of the scribe sheets were scanned on a Tektronix 4991 digital scanner. The scanner automatically converts the scanned image to an ASCII vector format. These vectors were transferred to a VAX minicomputer, where they were then loaded into ARC/INFO. Each vector and polygon was given attributes derived from the original 1979 geologic map. This database was developed on a MicroVAX computer system using VAX V 5.4 nd ARC/INFO 5.0 software. UPDATE: April 1995, The update was done solely for the purpose of adding the abilitly to plot to an HP650c plotter. Two new ARC/INFO plot AMLs along with a lineset and shadeset for the HP650C design jet printer have been included. These new files are COLORADO.650, INDEX.650, TWETOLIN.E00 and TWETOSHD.E00. These files were created on a UNIX platform with ARC/INFO 6.1.2. Updated versions of INDEX.E00, CONTACT.E00, LINE.E00, DECO.E00 and BORDER.E00 files that included the newly defined HP650c items are also included. * Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Descriptors: The Digital Geologic Map of Colorado in ARC/INFO Format Open-File Report 92-050

Green, Gregory N.

1992-01-01

442

The digital geologic map of Colorado in ARC/INFO format, Part A. Documentation  

USGS Publications Warehouse

This geologic map was prepared as a part of a study of digital methods and techniques as applied to complex geologic maps. The geologic map was digitized from the original scribe sheets used to prepare the published Geologic Map of Colorado (Tweto 1979). Consequently the digital version is at 1:500,000 scale using the Lambert Conformal Conic map projection parameters of the state base map. Stable base contact prints of the scribe sheets were scanned on a Tektronix 4991 digital scanner. The scanner automatically converts the scanned image to an ASCII vector format. These vectors were transferred to a VAX minicomputer, where they were then loaded into ARC/INFO. Each vector and polygon was given attributes derived from the original 1979 geologic map. This database was developed on a MicroVAX computer system using VAX V 5.4 nd ARC/INFO 5.0 software. UPDATE: April 1995, The update was done solely for the purpose of adding the abilitly to plot to an HP650c plotter. Two new ARC/INFO plot AMLs along with a lineset and shadeset for the HP650C design jet printer have been included. These new files are COLORADO.650, INDEX.650, TWETOLIN.E00 and TWETOSHD.E00. These files were created on a UNIX platform with ARC/INFO 6.1.2. Updated versions of INDEX.E00, CONTACT.E00, LINE.E00, DECO.E00 and BORDER.E00 files that included the newly defined HP650c items are also included. * Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Descriptors: The Digital Geologic Map of Colorado in ARC/INFO Format Open-File Report 92-050

Green, Gregory N.

1992-01-01

443

FACSIM/MRS-1: Cask receiving and consolidation model documentation and user's guide  

SciTech Connect

The Pacific Northwest Laboratory (PNL) has developed a stochastic computer model, FACSIM/MRS, to assist in assessing the operational performance of the Monitored Retrievable Storage (MRS) waste-handling facility. This report provides the documentation and user's guide for the component FACSIM/MRS-1, which is also referred to as the front-end model. The FACSIM/MRS-1 model simulates the MRS cask-receiving and spent-fuel consolidation activities. The results of the assessment of the operational performance of these activities are contained in a second report, FACSIM/MRS-1: Cask Receiving and Consolidation Performance Assessment (Lotz and Shay 1987). The model of MRS canister storage and shipping operations is presented in FACSIM/MRS-2: Storage and Shipping Model Documentation and User's Guide (Huber et al. 1987). The FACSIM/MRS model uses the commercially available FORTRAN-based SIMAN (SIMulation ANalysis language) simulation package (Pegden 1982). SIMAN provides a set of FORTRAN-coded commands, called block operations, which are used to build detailed models of continuous or discrete events that make up the operations of any process, such as the operation of an MRS facility. The FACSIM models were designed to run on either an IBM-PC or a VAX minicomputer. The FACSIM/MRS-1 model is flexible enough to collect statistics concerning almost any aspect of the cask receiving and consolidation operations of an MRS facility. The MRS model presently collects statistics on 51 quantities of interest during the simulation. SIMAN reports the statistics with two forms of output: a SIMAN simulation summary and an optional set of SIMAN output files containing data for use by more detailed post processors and report generators.

Lotz, T.L.; Shay, M.R.

1987-06-01

444

[Fluorescence of dental porcelain: material and methods].  

PubMed

Dental porcelain emits some fluorescence under the action of ultra-violet rays. This emission may be at the origin of errors in the choice of the colour of a crown. In order to study this fluorescence phenomenon, the following experimental protocol has been developed: 363.8 nm exciting radiation isolated from the emission by an Argon laser; Fluorescence emitted by the sample and dispersed via a spectrometer, protected by a stop-U.V. filter; Influx collected by a photomultiplier, then directed, after passage in a picoamperemeter, toward a mini-computer programmed to print the spectra; Correction of the spectra by a tungsten lamp used at the 2,600 K colour temperature; Use of reference spectra. On the same graph, the sample spectra are represented in solid lines, while the spectrum of the enamel used as a reference is shown as a dotted line. The results show that: Enamel has a fluorescence spectrum which has the shape of a wide band, with a maximum of 450 nm (characteristic of a blue-green shade) and a slow decrease up to 680 nm. The enamel fluorescence does not depend on the colour of the tooth; Dentine has a distribution spectrum which is similar to that of enamel but is three times fuller; The spectra of the ceramic samples reveal: a wide band due to transition metals, fine lines due to rare earth (terbium and europium). When the saturation degree of the ceramic increases, its fluorescence colour varies due to the relative increase in the amplitude of the lines in relation to the bands. Thus, when the sample colour progresses from B1 to B4, its fluorescence colour becomes greener.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:2207845

Monsénégo, G; Burdairon, G; Porte, C; Naud, C

1990-06-01

445

Eddy-current inspection for steam generator tubing program. Annual progress report for period ending December 31, 1979  

SciTech Connect

Eddy-current methods provide the best in-service inspection of steam generator tubing, but present techniques can produce ambiguity because of the many independent variables that affect the signals. The current development program has used mathematical models and developed or modified computer programs to design optimum probes, instrumentation, and techniques for multifrequency, multiproperty examinations. Interactive calculations and experimental measurements have been made with the use of modular eddy-current instrumentation and a minicomputer. These establish the coefficients for the complex equations that define the values of the desired properties (and the attainable accuracy) despite changes in other significant variables. The computer programs for calculating the accuracy with which various properties can be measured indicate that the tubing wall thickness and the defect size can be measured much more accurately than is currently required, even when other properties are varying. Our experimental measurements have confirmed these results, although more testing is needed for all the different combinations of cases and different types of defects. To facilitate the extensive laboratory scanning of the matrix of specimens that are necessary to develop algorithms for detection and analysis for all the possible combinations of positions of flaws, tube supports, and probe coils, we have designed, constructed, and begun operation of a computer-controlled automatic positioner. We have demonstrated the ability to overcome the large signals produced by the edge of the tube supports. An advanced microcomputer has been designed, constructed, and installed in the instrumentation to control the examination and provide real-time calculations of the desired properties for display recording during the scanning of the tube.

Dodd, C.V.; Deeds, W.E.; McClung, R.W.

1980-07-01

446

Temperature distributions from interstitial rf electrode hyperthermia systems: theoretical predictions.  

PubMed

In recent years, there has been increased interest in the use of hyperthermia as an adjuvant modality to radiation and chemotherapy in the treatment of cancer. One of the more promising techniques is the application of an rf voltage to an array of electrodes inserted directly into the tumor. The electrodes are usually small, hollow stainless steel needles that are inserted as the first step in a brachytherapy procedure. By applying a voltage between the needles, an rf current is induced in the tissue, resulting in joule heating. In this paper, we calculate numerically the temperature distributions for an array of such needles. In our model we assume a two-dimensional problem, i.e. infinitely long needles, and a homogeneous medium. Blood flow effects are included in the calculation. The results show that for low blood perfusion rates, e.g., on the order of 3 ml/100 gm X min, very smooth temperature distributions result, and the electrodes can be spaced fairly far apart. However, for blood flow rates on the order of 20 ml/100 gm X min the temperature distributions are not smooth, and there are hot spots around the electrodes and cool regions between them. However, if the electrodes are spaced about 1 cm apart and the voltages are adjusted to optimize the temperature distribution then reasonably good results should be achievable. The equation is solved using a finite difference technique. By applying the superpostion principle, we are able to introduce a procedure which substantially reduces the amount of core storage required and results in reasonably efficient run times on a moderate size mini-computer. PMID:6643161

Strohbehn, J W

1983-11-01

447

Research, development and demonstration of nickel-zinc batteries for electric vehicle propulsion. Annual report, 1979. [70 W/lb  

SciTech Connect

This second annual report under Contract No. 31-109-39-4200 covers the period July 1, 1978 through August 31, 1979. The program demonstrates the feasibility of the nickel-zinc battery for electric vehicle propulsion. The program is divided into seven distinct but highly interactive tasks collectively aimed at the development and commercialization of nickel-zinc technology. These basic technical tasks are separator development, electrode development, product design and analysis, cell/module battery testing, process development, pilot manufacturing, and thermal management. A Quality Assurance Program has also been established. Significant progress has been made in the understanding of separator failure mechanisms, and a generic category of materials has been specified for the 300+ deep discharge (100% DOD) applications. Shape change has been reduced significantly. A methodology has been generated with the resulting hierarchy: cycle life cost, volumetric energy density, peak power at 80% DOD, gravimetric energy density, and sustained power. Generation I design full-sized 400-Ah cells have yielded in excess of 70 W/lb at 80% DOD. Extensive testing of cells, modules, and batteries is done in a minicomputer-based testing facility. The best life attained with electric vehicle-size cell components is 315 cycles at 100% DOD (1.0V cutoff voltage), while four-cell (approx. 6V) module performance has been limited to about 145 deep discharge cycles. The scale-up of processes for production of components and cells has progressed to facilitate component production rates of thousands per month. Progress in the area of thermal management has been significant, with the development of a model that accurately represents heat generation and rejection rates during battery operation. For the balance of the program, cycle life of > 500 has to be demonstrated in modules and full-sized batteries. 40 figures, 19 tables. (RWR)

Not Available

1980-06-01

448

Energy from true in situ processing of Antrim shale: sampling and analytical systems  

SciTech Connect

Reliable on-line analysis of production gas composition is fundamental to the success of an in situ extraction experiment in Antrim shale. An automated sampling and analysis system designed to meet this need has provided high quality analytical data for three extraction trials without a single day when no data were taken. The production gas samples were routinely analyzed by both gas chromatography (GC) and a bank of continuous on-line process gas analyzers. The GC's analyzed for H/sub 2/, O/sub 2/ + Ar, N/sub 2/, CO, CO/sub 2/, SO/sub 2/, H/sub 2/S, individual C/sub 1/ - C/sub 5/ hydrocarbon species, and lumped C/sub 6/ + hydrocarbon species, each analysis requiring up to an hour to run. The process gas analyzers measured CO, CO/sub 2/, total hydrocarbons (% vol CH/sub 4/ equivalent), and O/sub 2/ continuously. The process gas analyzers were shown to be especially well suited for this application because of their fast response. The GC data provided itemized composition details as well as an independent check of process analyzer data. Sample selection, data collection and processing from both the GC's and process gas analyzers was handled by a Perkin Elmer Sigma-10 minicomputer. The combination of the two analytical techniques and automated data handling yielded a versatile and powerful system. The production gas sampling system demonstrated the feasibility of transmitting a properly treated gas sample through a long (1000 ft) 1/8'' diameter sample line. The small bore tubing allowed the analytical instruments to be located a safe distance away from the well heads and yet maintain a reasonably short sample transport lag time without handling large volumes of gas.

Pihlaja, R.K.

1980-08-01

449

Acoustic systems for the measurement of streamflow  

USGS Publications Warehouse

The acoustic velocity meter (AVM), also referred to as an ultrasonic flowmeter, has been an operational tool for the measurement of streamflow since 1965. Very little information is available concerning AVM operation, performance, and limitations. The purpose of this report is to consolidate information in such a manner as to provide a better understanding about the application of this instrumentation to streamflow measurement. AVM instrumentation is highly accurate and nonmechanical. Most commercial AVM systems that measure streamflow use the time-of-travel method to determine a velocity between two points. The systems operate on the principle that point-to-point upstream travel-time of sound is longer than the downstream travel-time, and this difference can be monitored and measured accurately by electronics. AVM equipment has no practical upper limit of measurable velocity if sonic transducers are securely placed and adequately protected. AVM systems used in streamflow measurement generally operate with a resolution of ?0.01 meter per second but this is dependent on system frequency, path length, and signal attenuation. In some applications the performance of AVM equipment may be degraded by multipath interference, signal bending, signal attenuation, and variable streamline orientation. Presently used minicomputer systems, although expensive to purchase and maintain, perform well. Increased use of AVM systems probably will be realized as smaller, less expensive, and more conveniently operable microprocessor-based systems become readily available. Available AVM equipment should be capable of flow measurement in a wide variety of situations heretofore untried. New signal-detection techniques and communication linkages can provide additional flexibility to the systems so that operation is possible in more river and estuary situations.

Laenen, Antonius; Smith, Winchell

1983-01-01

450

Some Problems and Solutions in Transferring Ecosystem Simulation Codes to Supercomputers  

NASA Technical Reports Server (NTRS)

Many computer codes for the simulation of ecological systems have been developed in the last twenty-five years. This development took place initially on main-frame computers, then mini-computers, and more recently, on micro-computers and workstations. Recent recognition of ecosystem science as a High Performance Computing and Communications Program Grand Challenge area emphasizes supercomputers (both parallel and distributed systems) as the next set of tools for ecological simulation. Transferring ecosystem simulation codes to such systems is not a matter of simply compiling and executing existing code on the supercomputer since there are significant differences in the system architectures of sequential, scalar computers and parallel and/or vector supercomputers. To more appropriately match the application to the architecture (necessary to achieve reasonable performance), the parallelism (if it exists) of the original application must be exploited. We discuss our work in transferring a general grassland simulation model (developed on a VAX in the FORTRAN computer programming language) to a Cray Y-MP. We show the Cray shared-memory vector-architecture, and discuss our rationale for selecting the Cray. We describe porting the model to the Cray and executing and verifying a baseline version, and we discuss the changes we made to exploit the parallelism in the application and to improve code execution. As a result, the Cray executed the model 30 times faster than the VAX 11/785 and 10 times faster than a Sun 4 workstation. We achieved an additional speed-up of approximately 30 percent over the original Cray run by using the compiler's vectorizing capabilities and the machine's ability to put subroutines and functions "in-line" in the code. With the modifications, the code still runs at only about 5% of the Cray's peak speed because it makes ineffective use of the vector processing capabilities of the Cray. We conclude with a discussion and future plans.

Skiles, J. W.; Schulbach, C. H.

1994-01-01

451

Two dimensional NMR of liquids and oriented molecules  

SciTech Connect

Chapter 1 discusses the quantum mechanical formalism used for describing the interaction between magnetic dipoles that dictates the appearance of a spectrum. The NMR characteristics of liquids and liquid crystals are stressed. Chapter 2 reviews the theory of multiple quantum and two dimensional NMR. Properties of typical spectra and phase cycling procedures are discussed. Chapter 3 describes a specific application of heteronuclear double quantum coherence to the removal of inhomogeneous broadening in liquids. Pulse sequences have been devised which cancel out any contribution from this inhomogeneity to the final spectrum. An interpretation of various pulse sequences for the case of /sup 13/C and /sup 1/H is given, together with methods of spectral editing by removal or retention of the homo- or heteronuclear J coupling. The technique is applied to a demonstration of high resolution in both frequency and spatial dimensions with a surface coil. In Chapter 4, multiple quantum filtered 2-D spectroscopy is demonstrated as an effective means of studying randomly deuterated molecules dissolved in a nematic liquid crystal. Magnitudes of dipole coupling constants have been determined for benzene and hexane, and their signs and assignments found from high order multiple quantum spectra. For the first time, a realistic impression of the conformation of hexane can be estimated from these results. Chapter 5 is a technical description of the MDB DCHIB-DR11W parallel interface which has been set up to transfer data between the Data General Nova 820 minicomputer, interfaced to the 360 MHz spectrometer, and the Vax 11/730. It covers operation of the boards, physical specifications and installation, and programs for testing and running the interface.

Gochin, M.

1987-02-01

452

Structural Analysis Made 'NESSUSary'  

NASA Technical Reports Server (NTRS)

Everywhere you look, chances are something that was designed and tested by a computer will be in plain view. Computers are now utilized to design and test just about everything imaginable, from automobiles and airplanes to bridges and boats, and elevators and escalators to streets and skyscrapers. Computer-design engineering first emerged in the 1970s, in the automobile and aerospace industries. Since computers were in their infancy, however, architects and engineers during the time were limited to producing only designs similar to hand-drafted drawings. (At the end of 1970s, a typical computer-aided design system was a 16-bit minicomputer with a price tag of $125,000.) Eventually, computers became more affordable and related software became more sophisticated, offering designers the "bells and whistles" to go beyond the limits of basic drafting and rendering, and venture into more skillful applications. One of the major advancements was the ability to test the objects being designed for the probability of failure. This advancement was especially important for the aerospace industry, where complicated and expensive structures are designed. The ability to perform reliability and risk assessment without using extensive hardware testing is critical to design and certification. In 1984, NASA initiated the Probabilistic Structural Analysis Methods (PSAM) project at Glenn Research Center to develop analysis methods and computer programs for the probabilistic structural analysis of select engine components for current Space Shuttle and future space propulsion systems. NASA envisioned that these methods and computational tools would play a critical role in establishing increased system performance and durability, and assist in structural system qualification and certification. Not only was the PSAM project beneficial to aerospace, it paved the way for a commercial risk- probability tool that is evaluating risks in diverse, down- to-Earth application

2005-01-01

453

Design of a real-time wind turbine simulator using a custom parallel architecture  

NASA Technical Reports Server (NTRS)

The design of a new parallel-processing digital simulator is described. The new simulator has been developed specifically for analysis of wind energy systems in real time. The new processor has been named: the Wind Energy System Time-domain simulator, version 3 (WEST-3). Like previous WEST versions, WEST-3 performs many computations in parallel. The modules in WEST-3 are pure digital processors, however. These digital processors can be programmed individually and operated in concert to achieve real-time simulation of wind turbine systems. Because of this programmability, WEST-3 is very much more flexible and general than its two predecessors. The design features of WEST-3 are described to show how the system produces high-speed solutions of nonlinear time-domain equations. WEST-3 has two very fast Computational Units (CU's) that use minicomputer technology plus special architectural features that make them many times faster than a microcomputer. These CU's are needed to perform the complex computations associated with the wind turbine rotor system in real time. The parallel architecture of the CU causes several tasks to be done in each cycle, including an IO operation and the combination of a multiply, add, and store. The WEST-3 simulator can be expanded at any time for additional computational power. This is possible because the CU's interfaced to each other and to other portions of the simulation using special serial buses. These buses can be 'patched' together in essentially any configuration (in a manner very similar to the programming methods used in analog computation) to balance the input/ output requirements. CU's can be added in any number to share a given computational load. This flexible bus feature is very different from many other parallel processors which usually have a throughput limit because of rigid bus architecture.

Hoffman, John A.; Gluck, R.; Sridhar, S.

1995-01-01

454

COMPUTER MODEL OF TEMPERATURE DISTRIBUTION IN OPTICALLY PUMPED LASER RODS  

NASA Technical Reports Server (NTRS)

Managing the thermal energy that accumulates within a solid-state laser material under active pumping is of critical importance in the design of laser systems. Earlier models that calculated the temperature distribution in laser rods were single dimensional and assumed laser rods of infinite length. This program presents a new model which solves the temperature distribution problem for finite dimensional laser rods and calculates both the radial and axial components of temperature distribution in these rods. The modeled rod is either side-pumped or end-pumped by a continuous or a single pulse pump beam. (At the present time, the model cannot handle a multiple pulsed pump source.) The optical axis is assumed to be along the axis of the rod. The program also assumes that it is possible to cool different surfaces of the rod at different rates. The user defines the laser rod material characteristics, determines the types of cooling and pumping to be modeled, and selects the time frame desired via the input file. The program contains several self checking schemes to prevent overwriting memory blocks and to provide simple tracing of information in case of trouble. Output for the program consists of 1) an echo of the input file, 2) diffusion properties, radius and length, and time for each data block, 3) the radial increments from the center of the laser rod to the outer edge of the laser rod, and 4) the axial increments from the front of the laser rod to the other end of the rod. This program was written in Microsoft FORTRAN77 and implemented on a Tandon AT with a 287 math coprocessor. The program can also run on a VAX 750 mini-computer. It has a memory requirement of about 147 KB and was developed in 1989.

Farrukh, U. O.

1994-01-01

455

Parallel processing research in the former Soviet Union  

SciTech Connect

This technical assessment report examines strengths and weaknesses of parallel processing research and development in the Soviet Union from the 1980s to June 1991. The assessment was carried out by panel of US scientists who are experts on parallel processing hardware, software, algorithms, and applications, and on Soviet computing. Soviet computer research and development organizations have pursued many of the major avenues of inquiry related to parallel processing that the West has chosen to explore. But, the limited size and substantial breadth of their effort have limited the collective depth of Soviet activity. Even more serious limitations (and delays) of Soviet achievement in parallel processing research can be traced to shortcomings of the Soviet computer industry, which was unable to supply adequate, reliable computer components. Without the ability to build, demonstrate, and test embodiments of their ideas in actual high-performance parallel hardware, both the scope of activity and the success of Soviet parallel processing researchers were severely limited. The quality of the Soviet parallel processing research assessed varied from very sound and interesting to pedestrian, with most of the groups at the major hardware and software centers to which the work is largely confined doing good (or at least serious) research. In a few instances, interesting and competent parallel language development work was found at institutions not associated with hardware development efforts. Unlike Soviet mainframe and minicomputer developers, Soviet parallel processing researchers have not concentrated their efforts on reverse- engineering specific Western systems. No evidence was found of successful Soviet attempts to use breakthroughs in parallel processing technology to leapfrog'' impediments and limitations that Soviet industrial weakness in microelectronics and other computer manufacturing areas impose on the performance of high-end Soviet computers.

Dongarra, J.J.; Snyder, L.; Wolcott, P.

1992-03-01

456

Parallel processing research in the former Soviet Union  

SciTech Connect

This technical assessment report examines strengths and weaknesses of parallel processing research and development in the Soviet Union from the 1980s to June 1991. The assessment was carried out by panel of US scientists who are experts on parallel processing hardware, software, algorithms, and applications, and on Soviet computing. Soviet computer research and development organizations have pursued many of the major avenues of inquiry related to parallel processing that the West has chosen to explore. But, the limited size and substantial breadth of their effort have limited the collective depth of Soviet activity. Even more serious limitations (and delays) of Soviet achievement in parallel processing research can be traced to shortcomings of the Soviet computer industry, which was unable to supply adequate, reliable computer components. Without the ability to build, demonstrate, and test embodiments of their ideas in actual high-performance parallel hardware, both the scope of activity and the success of Soviet parallel processing researchers were severely limited. The quality of the Soviet parallel processing research assessed varied from very sound and interesting to pedestrian, with most of the groups at the major hardware and software centers to which the work is largely confined doing good (or at least serious) research. In a few instances, interesting and competent parallel language development work was found at institutions not associated with hardware development efforts. Unlike Soviet mainframe and minicomputer developers, Soviet parallel processing researchers have not concentrated their efforts on reverse- engineering specific Western systems. No evidence was found of successful Soviet attempts to use breakthroughs in parallel processing technology to ``leapfrog`` impediments and limitations that Soviet industrial weakness in microelectronics and other computer manufacturing areas impose on the performance of high-end Soviet computers.

Dongarra, J.J.; Snyder, L.; Wolcott, P.

1992-03-01

457

[Evaluation of diastolic phase by left ventricular volume curve using S2-gated equilibrium method in radioisotope angiography].  

PubMed

S2-gated (the second heart sound) method was designed by authors. In 6 normal subjects and 16 patients (old myocardial infarction 12 cases, hypertension 2 cases and aortic regurgitation 2 cases), radioisotope (RI) angiography using S2-gated equilibrium method was performed. In RI angiography, 99mTc-human serum albumin (HSA) 555MBq (15 mCi) as tracer, PDP11/34 as minicomputer and PCG/ECG synchronizer (Metro Inst.) were used. Then left ventricular (LV) volume curve by S2-gated and electrocardiogram (ECG) R wave-gated method were obtained. Using LV volume curve, left ventricular ejection fraction (EF), mean ejection rate (mER, s-1), mean filling rate (mFR, s-1) and rapid filling fraction (RFF) were calculated. mFR indicated mean filling rate during rapid filling phase. RFF was defined as the filling fraction during rapid filling phase among stroke volume. S2-gated method was reliable in evaluation of early diastolic phase, compared with ECG-gated method. There was the difference between RFF in normal group and myocardial infarction (MI) group (p less than 0.005). RFF in 2 groups were correlated with EF (r = 0.82, p less than 0.01). RFF was useful in evaluating MI cases who had normal EF values. The comparison with mER by ECG-gated and mFR by S2-gated was useful in evaluating MI cases who had normal mER values. mFR was remarkably lower than mER in MI group, but was equal to mER in normal group approximately. In conclusion, the evaluation using RFF and mFR by S2-gated method was useful in MI cases who had normal systolic phase indices. PMID:6221356

Watanabe, Y; Sakai, A; Inada, M; Shiraishi, T; Kobayashi, A

1982-10-01

458

A procedure for recording electroretinogram and visual evoked potential in freely moving cats.  

PubMed

A procedure for recording the electroretinogram (ERG) and the visual evoked potential (VEP) in freely moving cats was developed and used to test the visual toxicity of nalidixic acid. The electrodes for recording the ERG and VEP were implanted chronically in the sclera of the eye and on the surface of the visual cortex, respectively. Both the ERG and VEP were simultaneously recorded in freely moving cats using a slip ring that allows the cat to move freely without twisting the cables. After a 15-min dark-adaptation period, 20 responses to repetitive photic stimulation with an intensity of 2 joules and a 10-sec interstimulus interval were averaged by means of a minicomputer. The waveform of the ERG consisted of a negative wave (a-wave) followed by a positive wave (b-wave) with 2 to 3 oscillatory potentials on the rising slope. The VEP consisted of initial positive wave (P1 wave) followed by a negative wave (N1 wave) and late positive and negative deflections. The amplitude of the components of the ERG and VEP varied considerably from animal to animal, whereas within the same animal they were very stable. Using this technique, the effects of nalidixic acid, a retinotoxic compound, on the ERG and VEP were studied. Nalidixic acid produced a marked, but transient, decrease in the amplitude of the ERG b-wave after a single intravenous injection at a dose of 10 mg/kg. After repeated doses at 40 mg/kg/day for 2 weeks, the reduction in the amplitude of the b-wave was stronger, but remained transient. Upon ophthalmologic and histopathologic examination of the retina, no abnormalities indicating visual toxicity were observed. These results indicate that this procedure for recording the ERG and VEP is useful for evaluating the visual toxicity of drugs in freely moving cats. PMID:2082023

Imai, R; Sugimoto, S; Ando, T; Sato, S

1990-11-01

459

Forms control and error detection procedures used at the Coordinating Center of the Multiple Risk Factor Intervention Trial (MRFIT).  

PubMed

Although methods used for data collection and quality assurance for large-scale clinical trials are important to critical reading of trial results and have been published, such reporting is the exception rather than the rule. In the MRFIT, systematic methods for processing large volumes of data over a long period of time were developed. The methods were designed to detect and control a variety of errors and to leave a complete audit trial of the processing of forms and corrections to forms. Many of these methods evolved and were refined during the course of the study as a result of trial and error. If one were to start over, the methods described herein would be modified. The field of data processing is evolving, and it is important for statistical and data processing staff of coordinating centers to recognize this and continually evaluate and update their methods. For example, the simultaneous entry and computer editing of forms is becoming more feasible with time. Also, more sophisticated intelligent data entry equipment is available for central use. Near the end of MRFIT, some data received at the Coordinating Center were entered and edited on a minicomputer. The parameter-driven edits described previously were performed at the time of data entry. Additional modifications to the content of the data dictionary for future studies are also being considered. The incorporation into the data dictionary of consistency checks (both deterministic and probabilistic) between fields on different forms would facilitate the specification of complex edit checks and would provide better documentation of the edit checks actually performed. Incorporating definitions of the numeric codes for each field would improve the documentation and facilitate reporting using statistical packages. Dedicated computer hardware should also be a major consideration of coordinating centers in future clinical trials. For MRFIT, a dedicated system was used from 1978 to the end of the trial. With the continued decline in hardware costs, dedicated systems can and should be considered, even for trials much smaller than MRFIT. We believe the system developed for processing data in the MRFIT has several advantages. It satisfies the requirements identified by Karrison or a system of data editing and control, it is largely self-documenting as a result of the data dictionary approach taken, and it is easily adaptable to other clinical studies. PMID:3802845

DuChene, A G; Hultgren, D H; Neaton, J D; Grambsch, P V; Broste, S K; Aus, B M; Rasmussen, W L

1986-09-01

460

LOOK- A TEXT FILE DISPLAY PROGRAM  

NASA Technical Reports Server (NTRS)

The LOOK program was developed to permit a user to examine a text file in a psuedo-random access manner. Many engineering and scientific programs generate large amounts of printed output. Often this output needs to be examined in only a few places. On mini-computers (like the DEC VAX) high-speed printers are usually at a premium. One alternative is to save the output in a text file and examine it with a text editor. The slowness of a text editor, the possibility of inadvertently changing the output, and other factors make this an unsatisfactory solution. The LOOK program provides the user with a means of rapidly examining the contents of an ASCII text file. LOOK's basis of operation is to open the text file for input only and then access it in a block-wise fashion. LOOK handles the text formatting and displays the text lines on the screen. The user can move forward or backward in the file by a given number of lines or blocks. LOOK also provides the ability to "scroll" the text at various speeds in the forward or backward directions. The user can perform a search for a string (or a combination of up to 10 strings) in a forward or backward direction. Also, user selected portions of text may be extracted and submitted to print or placed in a file. Additional features available to the LOOK user include: cancellation of an operation with a keystroke, user definable keys, switching mode of operation (e.g. 80/132 column), on-line help facility, trapping broadcast messages, and the ability to spawn a sub-process to carry out DCL functions without leaving LOOK. The LOOK program is written in FORTRAN 77 and MACRO ASSEMBLER for interactive execution and has been implemented on a DEC VAX computer using VAX/VMS with a central memory requirement of approximately 430K of 8 bit bytes. LOOK operation is terminal independent but will take advantage of the features of the DEC VT100 terminal if available. LOOK was developed in 1983.

Vavrus, J. L.

1994-01-01

461

Cyclic axial-torsional deformation behavior of a cobalt-base superalloy  

NASA Technical Reports Server (NTRS)

Multiaxial loading, especially at elevated temperature, can cause the inelastic response of a material to differ significantly from that predicted by simple flow rules, i.e., von Mises or Tresca. To quantify some of these differences, the cyclic high-temperature, deformation behavior of a wrought cobalt-based superalloy, Haynes 188, is investigated under combined axial and torsional loads. Haynes 188 is currently used in many aerospace gas turbine and rocket engine applications, e.g., the combustor liner for the T800 turboshaft engine for the RAH-66 Comanche helicopter and the liquid oxygen posts in the main injector of the space shuttle main engine. The deformation behavior of this material is assessed through the examination of hysteresis loops generated from a biaxial fatigue test program. A high-temperature axial, torsional, and combined axial-torsional fatigue data base has been generated on Haynes 188 at 760 C. Cyclic loading tests have been conducted on uniform gauge section tubular specimens in a servohydraulic axial-torsional test rig. Test control and data acquisition were accomplished with a minicomputer. In this paper, the cyclic hardening characteristics and typical hysteresis loops in the axial stress versus axial strain, shear stress versus engineering shear strain, axial strain versus engineering shear strain, and axial stress versus shear stress spaces are presented for cyclic, in-phase and out-of-phase, axial torsional tests. For in-phase tests three different values of the proportionality constant, lambda (ratio of engineering shear strain amplitude to axial strain amplitude), are examined, viz., 0.86, 1.73, and 3.46. In the out-of-phase tests, three different values of the phase angle, phi (between the axial and engineering shear strain waveforms), are studied, viz., 30, 60, and 90 deg with lambda = 1.73. The cyclic hardening behaviors of all the tests conducted on Haynes 188 at 760 C are evaluated using the von Mises equivalent stress-strain and the maximum shear stress-maximum engineering shear strain (Tresca) curves. Comparisons are also made between the hardening behaviors of cyclic axial, torsional, and combined in-phase and out-of-phase axial-torsional fatigue tests. These comparisons are accomplished through simple Ramberg-Osgood type stress-strain functions for cyclic, axial stress-strain and shear stress-engineering shear strain curves.

Bonacuse, Peter J.; Kalluri, Sreeramesh

1992-01-01

462

PC-Link historical data base system MODCOMP/IBM at link for neutral particle beam operation  

SciTech Connect

PC-Link'' is a combination of hardware and software that connects an IBM PC/AT to a MODCOMP minicomputer. It is designed as an aid to the Neutral Beam operations coordinator during injection into the DIII-D tokamak project. An IBM PC/AT is linked to 4 MODCOMP realtime'' acquisition systems, each of which controls 2 neutral particle beam sources. At various points in the shot sequence, data is sent to the IBM PC/AT. This data can then be integrated with the data from the other sources into tables or graphics displays for use by the Beam Coordinator. In this way, the coordinator gets realtime feedback on the relative settings and performance of the sources and can observe trends within a particular source at one location. The PC- Link is used for observing relative timing information and for post shot historical archiving. The concept of the PC-Link was originally proposed several years ago. In April 1988, in-house implementation of the link software was begun. The PC-Link receives approximately 2 Kbytes of data per source per shot. This data is converted from MODCOMP format to IBM PC format and archived to disk. The last 280 shots per source are stored to disk to observe trends. The data can be displayed in a number of formats depending upon the situation. For example, prior to a shot, the beam MODCOMPs are sent timing information from the DIII-D tokamak control system. This data is echoed on the PC in a graphical representation displaying all 8 sources. At the end of the shot, the actual running times are displayed along with the requested settings. Any subset of the Historical data may be displayed either graphically or in tables for realtime comparisons between sources. This system is designed for realtime use, not for complete archiving purposes. This same data is also sent to a VAX computer for full integration into the archive database. This system is easily upgradable and extremely versatile. 4 figs.

Thurgood, P.

1989-12-01

463

CLIPS - C LANGUAGE INTEGRATED PRODUCTION SYSTEM (IBM PC VERSION)  

NASA Technical Reports Server (NTRS)

The C Language Integrated Production System, CLIPS, is a shell for developing expert systems. It is designed to allow artificial intelligence research, development, and delivery on conventional computers. The primary design goals for CLIPS are portability, efficiency, and functionality. For these reasons, the program is written in C. CLIPS meets or outperforms most micro- and minicomputer based artificial intelligence tools. CLIPS is a forward chaining rule-based language. The program contains an inference engine and a language syntax that provide a framework for the construction of an expert system. It also includes tools for debugging an application. CLIPS is based on the Rete algorithm, which enables very efficient pattern matching. The collection of conditions and actions to be taken if the conditions are met is constructed into a rule network. As facts are asserted either prior to or during a session, CLIPS pattern-matches the number of fields. Wildcards and variables are supported for both single and multiple fields. CLIPS syntax allows the inclusion of externally defined functions (outside functions which are written in a language other than CLIPS). CLIPS itself can be embedded in a program such that the expert system is available as a simple subroutine call. Advanced features found in CLIPS version 4.3 include an integrated microEMACS editor, the ability to generate C source code from a CLIPS rule base to produce a dedicated executable, binary load and save capabilities for CLIPS rule bases, and the utility program CRSV (Cross-Reference, Style, and Verification) designed to facilitate the development and maintenance of large rule bases. Five machine versions are available. Each machine version includes the source and the executable for that machine. The UNIX version includes the source and binaries for IBM RS/6000, Sun3 series, and Sun4 series computers. The UNIX, DEC VAX, and DEC RISC Workstation versions are line oriented. The PC version and the Macintosh version each contain a windowing variant of CLIPS as well as the standard line oriented version. The mouse/window interface version for the PC works with a Microsoft compatible mouse or without a mouse. This window version uses the proprietary CURSES library for the PC, but a working executable of the window version is provided. The window oriented version for the Macintosh includes a version which uses a full Macintosh-style interface, including an integrated editor. This version allows the user to observe the changing fact base and rule activations in separate windows while a CLIPS program is executing. The IBM PC version is available bundled with CLIPSITS, The CLIPS Intelligent Tutoring System for a special combined price (COS-10025). The goal of CLIPSITS is to provide the student with a tool to practice the syntax and concepts covered in the CLIPS User's Guide. It attempts to provide expert diagnosis and advice during problem solving which is typically not available without an instructor. CLIPSITS is divided into 10 lessons which mirror the first 10 chapters of the CLIPS User's Guide. The program was developed for the IBM PC series with a hard disk. CLIPSITS is also available separately as MSC-21679. The CLIPS program is written in C for interactive execution and has been implemented on an IBM PC computer operating under DOS, a Macintosh and DEC VAX series computers operating under VMS or ULTRIX. The line oriented version should run on any computer system which supports a full (Kernighan and Ritchie) C compiler or the ANSI standard C language. CLIPS was developed in 1986 and Version 4.2 was released in July of 1988. Version 4.3 was released in June of 1989.

Riley, G.

1994-01-01

464

CLIPS - C LANGUAGE INTEGRATED PRODUCTION SYSTEM (MACINTOSH VERSION)  

NASA Technical Reports Server (NTRS)

The C Language Integrated Production System, CLIPS, is a shell for developing expert systems. It is designed to allow artificial intelligence research, development, and delivery on conventional computers. The primary design goals for CLIPS are portability, efficiency, and functionality. For these reasons, the program is written in C. CLIPS meets or outperforms most micro- and minicomputer based artificial intelligence tools. CLIPS is a forward chaining rule-based language. The program contains an inference engine and a language syntax that provide a framework for the construction of an expert system. It also includes tools for debugging an application. CLIPS is based on the Rete algorithm, which enables very efficient pattern matching. The collection of conditions and actions to be taken if the conditions are met is constructed into a rule network. As facts are asserted either prior to or during a session, CLIPS pattern-matches the number of fields. Wildcards and variables are supported for both single and multiple fields. CLIPS syntax allows the inclusion of externally defined functions (outside functions which are written in a language other than CLIPS). CLIPS itself can be embedded in a program such that the expert system is available as a simple subroutine call. Advanced features found in CLIPS version 4.3 include an integrated microEMACS editor, the ability to generate C source code from a CLIPS rule base to produce a dedicated executable, binary load and save capabilities for CLIPS rule bases, and the utility program CRSV (Cross-Reference, Style, and Verification) designed to facilitate the development and maintenance of large rule bases. Five machine versions are available. Each machine version includes the source and the executable for that machine. The UNIX version includes the source and binaries for IBM RS/6000, Sun3 series, and Sun4 series computers. The UNIX, DEC VAX, and DEC RISC Workstation versions are line oriented. The PC version and the Macintosh version each contain a windowing variant of CLIPS as well as the standard line oriented version. The mouse/window interface version for the PC works with a Microsoft compatible mouse or without a mouse. This window version uses the proprietary CURSES library for the PC, but a working executable of the window version is provided. The window oriented version for the Macintosh includes a version which uses a full Macintosh-style interface, including an integrated editor. This version allows the user to observe the changing fact base and rule activations in separate windows while a CLIPS program is executing. The IBM PC version is available bundled with CLIPSITS, The CLIPS Intelligent Tutoring System for a special combined price (COS-10025). The goal of CLIPSITS is to provide the student with a tool to practice the syntax and concepts covered in the CLIPS User's Guide. It attempts to provide expert diagnosis and advice during problem solving which is typically not available without an instructor. CLIPSITS is divided into 10 lessons which mirror the first 10 chapters of the CLIPS User's Guide. The program was developed for the IBM PC series with a hard disk. CLIPSITS is also available separately as MSC-21679. The CLIPS program is written in C for interactive execution and has been implemented on an IBM PC computer operating under DOS, a Macintosh and DEC VAX series computers operating under VMS or ULTRIX. The line oriented version should run on any computer system which supports a full (Kernighan and Ritchie) C compiler or the ANSI standard C language. CLIPS was developed in 1986 and Version 4.2 was released in July of 1988. Version 4.3 was released in June of 1989.

Culbert, C.

1994-01-01

465

CLIPS - C LANGUAGE INTEGRATED PRODUCTION SYSTEM (IBM PC VERSION WITH CLIPSITS)  

NASA Technical Reports Server (NTRS)

The C Language Integrated Production System, CLIPS, is a shell for developing expert systems. It is designed to allow artificial intelligence research, development, and delivery on conventional computers. The primary design goals for CLIPS are portability, efficiency, and functionality. For these reasons, the program is written in C. CLIPS meets or outperforms most micro- and minicomputer based artificial intelligence tools. CLIPS is a forward chaining rule-based language. The program contains an inference engine and a language syntax that provide a framework for the construction of an expert system. It also includes tools for debugging an application. CLIPS is based on the Rete algorithm, which enables very efficient pattern matching. The collection of conditions and actions to be taken if the conditions are met is constructed into a rule network. As facts are asserted either prior to or during a session, CLIPS pattern-matches the number of fields. Wildcards and variables are supported for both single and multiple fields. CLIPS syntax allows the inclusion of externally defined functions (outside functions which are written in a language other than CLIPS). CLIPS itself can be embedded in a program such that the expert system is available as a simple subroutine call. Advanced features found in CLIPS version 4.3 include an integrated microEMACS editor, the ability to generate C source code from a CLIPS rule base to produce a dedicated executable, binary load and save capabilities for CLIPS rule bases, and the utility program CRSV (Cross-Reference, Style, and Verification) designed to facilitate the development and maintenance of large rule bases. Five machine versions are available. Each machine version includes the source and the executable for that machine. The UNIX version includes the source and binaries for IBM RS/6000, Sun3 series, and Sun4 series computers. The UNIX, DEC VAX, and DEC RISC Workstation versions are line oriented. The PC version and the Macintosh version each contain a windowing variant of CLIPS as well as the standard line oriented version. The mouse/window interface version for the PC works with a Microsoft compatible mouse or without a mouse. This window version uses the proprietary CURSES library for the PC, but a working executable of the window version is provided. The window oriented version for the Macintosh includes a version which uses a full Macintosh-style interface, including an integrated editor. This version allows the user to observe the changing fact base and rule activations in separate windows while a CLIPS program is executing. The IBM PC version is available bundled with CLIPSITS, The CLIPS Intelligent Tutoring System for a special combined price (COS-10025). The goal of CLIPSITS is to provide the student with a tool to practice the syntax and concepts covered in the CLIPS User's Guide. It attempts to provide expert diagnosis and advice during problem solving which is typically not available without an instructor. CLIPSITS is divided into 10 lessons which mirror the first 10 chapters of the CLIPS User's Guide. The program was developed for the IBM PC series with a hard disk. CLIPSITS is also available separately as MSC-21679. The CLIPS program is written in C for interactive execution and has been implemented on an IBM PC computer operating under DOS, a Macintosh and DEC VAX series computers operating under VMS or ULTRIX. The line oriented version should run on any computer system which supports a full (Kernighan and Ritchie) C compiler or the ANSI standard C language. CLIPS was developed in 1986 and Version 4.2 was released in July of 1988. Version 4.3 was released in June of 1989.

Riley, , .

1994-01-01

466

Image analysis techniques. The problem of the quantitative evaluation of thechromatin ultrastructure.  

PubMed

The application of image analysis methods to conventional thin sections for electron microscopy to analyze the chromatin arrangement are quite limited. We developed a method which utilizes freeze-fractured samples; the results indicate that the method is suitable for identifying the changes in the chromatin arrangement which occur in physiological, experimental and pathological conditions. The modern era of image analysis begins in 1964, when pictures of the moon transmitted by Ranger 7 were processed by a computer. This processing improved the original picture by enhancing and restoring the image affected by various types of distorsion. These performances have been allowed by the third-generation of computers having the speed and the storage capabilities required for practical use of image processing algorithms. Each image can be converted into a two-dimensional light intensity function: f (x, y), where x and y are the spatial coordinates and f value is proportional to the gray level of the image at that point. The digital image is therefore a matrix whose elements are the pixels (picture elements). A typical digital image can be obtained with a quality comparable to monochrome TV, with a 512×512 pixel array with 64 gray levels. The magnetic disks of commercial minicomputers are thus capable of storing some tenths of images which can be elaborated by the image processor, converting the signal into digital form. In biological images, obtained by light microscopy, the digitation converts the chromatic differences into gray level intensities, thus allowing to define the contours of the cytoplasm, of the nucleus and of the nucleoli. The use of a quantitative staining method for the DNA, the Feulgen reaction, permits to evaluate the ratio between condensed chromatin (stained) and euchromatin (unstained). The digitized images obtained by transmission electron microscopy are rich in details at high resolution. However, the application of image analysis techniques to these images and especially to those referring to nuclei, is limited by several drawbacks: i) the thin section represents only a small fraction of the nuclear volume entirely visible in optical microscope specimens; ii) the identification of nucleosomes, of the solenoid fibres and of the higher levels of compaction of the heterochromatin is not thinsectioned specimens; iii) the differences between heterochromatin and euchromatin are based only on their grey level but do not reveal possible variations of their structural organization. Therefore, the applications of image analysis to the nuclear content does not utilzes the high resolution power of e.m. images and simply quantify the areas occupied by electron-dense chromatin with respect to the more electron-transparent ones. This result is less significative of those obtainable by optical microscopy, since the electron staining is not quantitative as the Fulgen reaction. On the other hand, the following problems still remain unresolved and should be clarified only by the use of quantitative image analysis: ultrastructural organization of the different types of heterochromatin (1); relationships between gene activation, transcription and chromatin decondensation; chromatin arrangement transformation induced by exogenous agents. In order to face these problems, in the last years we applied image analysis to cell or tissue specimens frozen in liquid nitrogen and then fractured in order to expose the inner content of the nucleus (Fig. 1). The obtained metal replicas represent very suitable specimens for digitalized image elaboration, since the fibers which give rise to the chromatin domains are exposed by the fracturing and evidentiated by the shadowing as black dots with a clear white shadow (Fig. 2). Therefore, their size and shape can be quantitatively evaluated by a digital image processor; in this vay the structural elements of the chromatin fibres are also detectable inside a fractured nucleus and their relative percentage ca be determined in each nuclear area (Fig. 3). This type of analysis has been initially u

Maraldi, N M; Marinelli, F; Squarzoni, S; Santi, S; Barbieri, M

1991-02-01

467

User's guide to HYPOINVERSE-2000, a Fortran program to solve for earthquake locations and magnitudes  

USGS Publications Warehouse

Hypoinverse is a computer program that processes files of seismic station data for an earthquake (like p wave arrival times and seismogram amplitudes and durations) into earthquake locations and magnitudes. It is one of a long line of similar USGS programs including HYPOLAYR (Eaton, 1969), HYPO71 (Lee and Lahr, 1972), and HYPOELLIPSE (Lahr, 1980). If you are new to Hypoinverse, you may want to start by glancing at the section “SOME SIMPLE COMMAND SEQUENCES” to get a feel of some simpler sessions. This document is essentially an advanced user’s guide, and reading it sequentially will probably plow the reader into more detail than he/she needs. Every user must have a crust model, station list and phase data input files, and glancing at these sections is a good place to begin. The program has many options because it has grown over the years to meet the needs of one the largest seismic networks in the world, but small networks with just a few stations do use the program and can ignore most of the options and commands. History and availability. Hypoinverse was originally written for the Eclipse minicomputer in 1978 (Klein, 1978). A revised version for VAX and Pro-350 computers (Klein, 1985) was later expanded to include multiple crustal models and other capabilities (Klein, 1989). This current report documents the expanded Y2000 version and it supercedes the earlier documents. It serves as a detailed user's guide to the current version running on unix and VAX-alpha computers, and to the version supplied with the Earthworm earthquake digitizing system. Fortran-77 source code (Sun and VAX compatible) and copies of this documentation is available via anonymous ftp from computers in Menlo Park. At present, the computer is swave.wr.usgs.gov and the directory is /ftp/pub/outgoing/klein/hyp2000. If you are running Hypoinverse on one of the Menlo Park EHZ or NCSN unix computers, the executable currently is ~klein/hyp2000/hyp2000. New features. The Y2000 version of Hypoinverse includes all of the previous capabilities, but adds Y2000 formats to those defined earlier. In most cases, the new formats add 2 digits to the year field to accommodate the century. Other fields are sometimes rearranged or expanded to accommodate a better field order. The Y2000 formats are invoked with the “200” command. When the Y2000 flag is turned on, all files are read and written in the new format and there is no mixing of format types in a single run. Some formats without a date field, like station files, have not changed. A separate program called 2000CONV has been written to convert old formats to new. Other new features, like expanded station names, calculating amplitude magnitudes from a variety of digital seismometers, station history files, interactive earthquake processing, and locations from CUSP (Caltech USGS Seismic Processing) binary files have been added. General features. Hypoinverse will locate any number of events in an input file, which can be in one of several different formats. Any or all of printout, summary or archive output may be produced. Hypoinverse is driven by user commands. The various commands define input and output files, set adjustable parameters, and solve for locations of a file of earthquake data using the parameters and files currently set. It is both interactive and "batch" in that commands may be executed either from the keyboard or from a file. You execute the commands in a file by typing @filename at the Hypoinverse prompt. Users may either supply parameters on the command line, or omit them and are prompted interactively. The current parameter values are displayed and may be taken as defaults by pressing just the RETURN key after the prompt. This makes the program very easy to use, providing you can remember the names of the commands. Combining commands with and without their required parameters into a command file permits a variety of customized procedures such as automatic input of crustal model and station data, but prompting for a different phase file each time. All commands are 3 letters long and most

Klein, Fred W.

2002-01-01