Note: This page contains sample records for the topic minicomputers from Science.gov.
While these samples are representative of the content of Science.gov,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of Science.gov
to obtain the most current and comprehensive results.
Last update: November 12, 2013.
1

Experiences moving COBOL onto a minicomputer  

Microsoft Academic Search

This paper presents some subjective experience and relative qualitative results concerning the transfer of a full High Level COBOL compiler designed for the IBM S\\/370 to a Low-Intermediate Level on a 32-bit minicomputer. The major impacts of language feature deletion upon compiler size and complexity, as well as the effects of specific compiler and object code support via micro-coding, are

Steven S. Herrick

1976-01-01

2

A minicomputer in a senior modern physics laboratory  

NSDL National Science Digital Library

A minicomputer recently introduced in a senior modern physics laboratory, and operating in a conversational mode, has been an excellent way both of teaching students computing and of encouraging them to use a computer routinely. The choice of computer languages is discussed, and the advantages and possible disadvantages of a minicomputer are listed.

Finegold, Leonard

2006-05-17

3

Minicomputer Controlled Test System for Process Control and Monitoring Systems.  

National Technical Information Service (NTIS)

A minicomputer controlled test system for testing process control and monitoring systems is described. This system, in service for over one year, has demonstrated that computerized control of such testing has a real potential for expanding the scope of th...

L. D. Worster

1975-01-01

4

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

5

Octoport: Use of an SEL 32/75 and Regional Processing Units as a Minicomputer Concentrator.  

National Technical Information Service (NTIS)

Lawrence Livermore Laboratory (LLL) is currently building a high-speed Data Communications System that will allow remote, user-operated minicomputer systems to share the resources of Octopus, the large, on-site computer network. The system will accommodat...

D. N. Hunt

1979-01-01

6

Minicomputer linear programming analysis yields options for gasoline-blending decisions  

SciTech Connect

Neither a large mainframe computer nor extensive mathematics background is now necessary to take advantage of linear programs in evaluating gasoline blending options. A minicomputer can handle the task. This article presents a general algorithm for performing linear programming (LP) analysis by the simplex method on a Radio Shack TRS-80 Model I or III (Level Basic) minicomputer with 16K of random access memory (RAM). Application of this general algorithm to gasoline blending studies is presented in this article by an outline of steps necessary for data input and evaluation of several cases to decide between various investment options.

Arnold, V.E.

1984-02-13

7

Some application possibilities of microprocessors and minicomputers in nondestructive eddy current instruments  

Microsoft Academic Search

The principles of designing NDT eddy current instruments using microprocessors and minicomputers are considered. Information processing contents and modern computers capabilities are estimated. Bibtex entry for this abstract Preferred format for this abstract (see Preferences) Find Similar Abstracts: Use: Authors Title Keywords (in text query field) Abstract Text Return: Query Results Return items starting with number Query Form Database: Astronomy

V. V. Kliuev; V. V. Sukhorukov; Iu. K. Fedosenko; A. A. Rodin

1980-01-01

8

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

9

File Conversion and Transfer from a Lanier No Problem Word Processor to a Defense Logistics Agency (DLA) Distributed Minicomputer System (DMINS),  

National Technical Information Service (NTIS)

This document is about conversion and transfer of text files from a certain brand of standalone word processors to a certain minicomputer system. It describes the method used an implementation of the method, and procedures for operators of the implementat...

R. G. Thornett

1987-01-01

10

Evaluation of a microcomputer-based clinical laboratory data acquisition system linked with a minicomputer-based patient data management system  

Microsoft Academic Search

We describe a microcomputer-based clinical laboratory data acquisition system linked with a minicomputer-based patient data management system and report on its performance. The system consists of a microcomputer and six laboratory analyzers: a blood gas analyzer, a flame photometer, a plasma osmotic pressure meter, a chloride ion titrator, a blood sugar analyzer, and a hemoglobin concentration and saturation meter. With

Koji Morita; Kazuyuki Ikeda

1987-01-01

11

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

SciTech Connect

The FORTRAN subroutine LSQFT is described which uses the Gauss method to fit nonlinear functions to data. This particular program is suitable for use on a minicomputer that is utilized for real-time data acquisition and analysis. A sample problem is described that requires a nine-parameter nonlinear fit to 200 data points. This problem serves both to illustrate the use of LSQFT and to compare its results with TJMAR1, a nonlinear parameter estimation program available in the Sandia MATHLIB, for the CDC 6600/7600 computers. The results of this comparison fit are identical to the significance of the input convergence criteria. The output of LSQFT includes the standard deviation of each fit parameter, which is useful for analysis of the significance of the parameters based on the input data or for evaluation of functional models used to fit to the data. Examples are given of the types of graphical output that can be generated from the results of LSQFT. The program is documented and listed in its entirety, and a user's guide is provided. 10 figures.

Drotning, W.D.

1980-05-01

12

Radiation Monitoring by Minicomputer.  

National Technical Information Service (NTIS)

Radiation monitoring at the Los Alamos Scientific Laboratory (LASL) ranges from measuring the potential build-up of alpha particle radiation in the offices and laboratories of LASL to the detection of radiation leakage from nuclear tests at the Nevada Tes...

M. Seamons

1977-01-01

13

Programmable Calculators and Minicomputers in Agriculture. A Symposium Exploring Computerized Decision-Making Aids and Their Extension to the Farm Level. Proceedings of a Symposium (Hot Springs, Arkansas, February 6-7, 1980)  

ERIC Educational Resources Information Center

|Ten papers presented at a symposium discuss the array of computerized decision-making aids currently available to farmers and ways to speed up the rate of adoption of computers by agriculturalists. Topics presented include the development of software for agricultural decision-making; the role of programmable calculators and minicomputers in…

Bentley, Ernest, Ed.

14

47—AN APPLICATION OF MINI-COMPUTERS TO THE OPTIMIZATION OF THE OPEN-END-SPINNING PROCESS PART VII: THE INFLUENCE OF THE PARTIAL DRAFTS BETWEEN THE OPENING ROLLER AND THE ROTOR AND THE TOTAL DRAFT AND DOUBLING ON THE BREAKING ELONGATION AND QUALITY INDEX OF OPEN-END-SPUN VISCOSE STAPLE-FIBRE YARNS  

Microsoft Academic Search

The application of the technique of Box and Hunter, combined with the use of a mini-computer, to the study of the relations between the total draft, the draft between the opening roller and the rotor, and doublings on the one hand and the breaking elongation and quality index of open-end-spun yarns of viscose staple fibre on the other permits graphs

A. Barella; J. P. Vigo

1977-01-01

15

46—AN APPLICATION OF MINI-COMPUTERS TO THE OPTIMIZATION OF THE OPEN-END-SPINNING PROCESS PART VI: THE INFLUENCE OF THE PARTIAL DRAFTS BETWEEN THE OPENING ROLLER AND THE ROTOR AND THE TOTAL DRAFT AND DOUBLING ON THE REGULARITY AND TENACITY OF OPEN-END-SPUN VISCOSE STAPLE-FIBRE YARNS  

Microsoft Academic Search

The application of the technique of Box and Hunter, combined with the use of a mini-computer, to the study of the relations between the total draft, the draft between the opening roller and the rotor, and doublings on the one hand and the regularity and tenacity of open-end-spun viscose staple-fibre yarns on the other permits graphs to be drawn that

A. Barella; J. P. Vigo

1977-01-01

16

Updating reactor control: mini-computers  

Microsoft Academic Search

An aging reactor control console and a limited operating budget have impeded many research projects in the TRIGA reactor facility at the University of Utah. The, University's present console is Circa 1959 vintage and repairs to the console are frequently required which present many electronic problems to a staff with little electronic training. As an alternative to a single function

K. C. Crawford; G. M. Sandquist

1984-01-01

17

Minicomputer guides Midway-Sunset steam project  

Microsoft Academic Search

Chanslor-Western Oil and Development Co. started a program of cyclic steam recovery in the Midway-Sunset field in 1964. After the basic technique of cyclic steam recovery was proven in the field, efficiency was improved by a well-by-well approach to thermal-recovery project analysis. The result has been one of the most successful cyclic steam projects in the San Joaquin Valley. Project

J. M. Williams; J. R. Machulda

1973-01-01

18

Automated Motor Testing Using a Minicomputer  

Microsoft Academic Search

A new approach to rapid automated performance testing of motors is presented in this paper. Specific application is made to brush motors (such as those used in vacuum cleaners) in order to illustrate the techniques on a motor which, because of its high speed and heating characteristics, is considered to be more difficult to test than other types of motors.

Arne M. Nystuen; Donald E. Knoop; Mark C. Loessel

1976-01-01

19

Minicomputers in the Teaching Laboratory - An Example from Physics.  

ERIC Educational Resources Information Center

Microcomputers are commonly interfaced to external devices in scientific, industrial, and consumer settings for data acquisition and for control. The general problem under consideration is the task of taking measurements of some continuous phenomenon, transforming them into digital form, and storing the data in the microcomputer for later use.…

Farr, John E.; van den Berg, Willem H.

20

A mini-computer based library control system  

Microsoft Academic Search

One of the major problems encountered in any large scale programming project is the control of the software. Invariably, such large programs are divided into many smaller elements since these are easier to code, test and document. However, such a division adds new complexity to the task of Configuration Management since the many source modules, data base elements, JCL (Job

William H. Josephs

1978-01-01

21

Computer Code Simulating Minicomputer Operation on a Large Computer.  

National Technical Information Service (NTIS)

A program emulator of a small M-6000 computer is described which is actually a program, simulating operation of a small M-6000 computer on a large BESM-6 computer. Capabilities of the emulator as well as its functional structure are considered. An example...

A. V. Kavchenko A. A. Karlov A. D. Polyntsev T. F. Smolyakova

1976-01-01

22

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

23

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

24

Fluoride Electrode-Coupled Minicomputer for Determination of Fluoride in Human Hair  

Microsoft Academic Search

This article presents a method of measuring the degree of fluorosis in people who work in a fluoride-polluted environment by the determination of fluoride in human hair. The oxygen flask method of decomposing and the addition of auxiliary combustible adhesive paper to the filter paper wrapping the hair sample before ignition, in combination with Gran?s multiple addition of fluoride electrode

C. Y. Wang; Y. M. Zhou; W. Z. Yang

1995-01-01

25

Mini-computer digital dynamic studies with multi-probe scintillation counting equipment  

Microsoft Academic Search

This program gives one the display on a cathode-ray storage tube of activity against time curves of data stored on punched paper tape. These data are in binary format 2 characters\\/word punched sequentially at 60 characters per s and represent the output of a 4-channel buffered storage scaler used in a four probe scintillation counting equipment. The program allows for

M. Page; R. Mathieu

1972-01-01

26

Mini-Computers and the Building Trades: A Guide for Teachers of Vocational Education. Final Report.  

ERIC Educational Resources Information Center

|These training materials are designed to help vocational education teachers introduce students to the utilization and installation of mini- and microcomputers in residential and small business buildings. It consists of two chapters. Chapter 1 contains general materials, designed to promote awareness, and chapter 2 contains materials which are…

Asplen, Donald; And Others

27

Through the Microcirculatory Maze with Machete, Molecule, and Minicomputer (1986 Alza Lecture)*  

PubMed Central

This is a personal historical essay on meanderings through the jungle of the microcirculatory swamp. Because one pretends that the wandering was purposefully exploratory, a few guideposts are placed at positions where one could discern blaze-marks from earlier wanderers, and the path cut a little wider along some of the routes that may be enjoyed by investigators wanting to put their blazes along more distant paths. Naturally, one starts by coming up the broad rivers, then branching into the little streams. Each of us chooses to seek a different “mother lode,” up a different stream.

Bassingthwaighte, James B.

2010-01-01

28

Specialized Research Equipment: Real-Time Minicomputer for Signal Processing Research.  

National Technical Information Service (NTIS)

The report describes the Computer Engineering Laboratory (CEL) which is being used to advance digital systems research and development. Laboratory equipment and personnel have the capability of performing both hardware and software research, as well as ab...

F. J. Taylor

1979-01-01

29

SAM - interactivnaya programma dlya rascheta ehlektronnykh pushek na mini-EhVM. (SAM interactive program for calculation of electron guns using minicomputers).  

National Technical Information Service (NTIS)

Complex of SAM programs for calculation of electron guns of injection assemblies of accelerators and powerful HF-generators is described. Electric and magnetic fields are presented in the form of superposition of external fields created by electrode syste...

M. A. Tiunov B. M. Fomel' V. P. Yakovlev

1989-01-01

30

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

31

Programmable Calculators and Minicomputers in Agriculture. A Symposium Exploring Computerized Decision-Making Aids and Their Extension to the Farm Level. Proceedings of a Symposium, Hot Springs, Arkansas, February 6-7, 1980.  

National Technical Information Service (NTIS)

Ten papers presented at a symposium discuss the array of computerized decision-making aids currently available to farmers and ways to speed up the rate of adoption of computers by agriculturalists. Topics presented include the development of software for ...

E. Bentley

1980-01-01

32

Raman Lidar Transmissometer Data Processing in Real Time.  

National Technical Information Service (NTIS)

A minicomputer with 8K memory was interfaced with a pulsed nitrogen laser Raman Transmissometer to provide real time data processing and display capability. Self-calibration, normalization and ambient background substraction are included in the minicomput...

B. Caputo D. A. Leonard

1973-01-01

33

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

34

42—AN APPLICATION OF MINI-COMPUTERS TO THE OPTIMIZATION OF THE OPEN-END-SPINNING PROCESS PART IX: THE INFLUENCE OF THE INPUT-SILVER LINEAR DENSITY AND OF THE PARTIAL DRAFTS BETWEEN THE FEED AND THE ROTOR ON THE PROPERTIES OF COTTON YARNS: DISCUSSION  

Microsoft Academic Search

According to the results of the experiments carried out, the following operating conditions lead to the optimum tenacity, elongation at break, and quality index: opening-roller speed: 4700 rev\\/min; rotor speed: 35 000 rev\\/min; draft between opening rotter and rotor: 5–5.50. If regularity is given priority, these figures should be slightly decreased, particularly when the yarn output increases.

A. Barella; J. P. Vigo

1978-01-01

35

41—AN APPLICATION OF MINI-COMPUTERS TO THE OPTIMIZATION OF THE OPEN-END-SPINNING PROCESS PART VIII: THE INFLUENCE OF THE INPUT-SILVER LINEAR DENSITY AND OF THE PARTIAL DRAFTS BETWEEN THE FEED AND THE ROTOR ON THE PROPERTIES OF COTTON YARNS: CONDITIONS AND RESULTS  

Microsoft Academic Search

The optimum conditions for the rotor-spinning of a given type of cotton, with the entry speed, total draft, and speed of production kept constant and the linear density of the input silver (and of the yarn produced) and the partial drafts between the feed and the rotor (feed–opening roller and opening roller–rotor) varied are established for yams of 26–40 tex.

A. Barella; J. P. Vigo

1978-01-01

36

Purple Mountain Observatory Astronomical Data Reduction and Analysis Facility.  

NASA Astrophysics Data System (ADS)

A short description of Purple Mountain Observatory Astronomical Data Reduction and Analysis Facility is presented. It consists of PDS 1010M microdensitometer, PDP-11/34A minicomputer and Comtal/Grinnell image processing subsystem. The minicomputer-based Tololo-Vienna Interactive Astronomical Image Processing Software System runs on it.

Zhang, Y.-Y.; Sheng, C.-J.; Chen, Y.-L.; An, X.-L.; Fang, H.; Su, H.-J.; Han, H.-Y.

37

A Senior-Graduate Level Course in Biomedical Instrumentation and Computing  

Microsoft Academic Search

A senior-graduate level course is described in which some of the material of traditional bioinstrumentation courses is presented in conjunction with laboratory applications of a minicomputer. During the course each student 1) learns aspects of the fundamental properties of bioelectrodes, transducers, and safe human biopotential measurement techniques, 2) uses a minicomputer as a laboratory instrument, and 3) initiates and completes

Spencer L. Bement; Clyde L. Owings

1976-01-01

38

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

39

Design and Analysis of an Access Control System for a Multi-Backend Database System.  

National Technical Information Service (NTIS)

This thesis describes the design and analysis of an access control mechanism for a multi-backend database system (MDBS). The MDBS utilizes a minicomputer as the controller and a number of minicomputers and their disk systems as the backends. The database ...

A. Ekici

1984-01-01

40

TOSS Exchange Center.  

National Technical Information Service (NTIS)

The interim technical report documents the detailed system specifications for the Terminal Oriented Support System (TOSS) Exchange Center (TEC) as required under RADC Contract. TEC is a software system design which enables a mini-computer to function as a...

R. Taylor D. Lewis R. Hicks B. Montcalm C. Shorter

1974-01-01

41

Computer Managed Instruction in Navy Training.  

National Technical Information Service (NTIS)

The report presents the findings of a six-month study undertaken to investigate the feasibility of Computer Managed Instruction (CMI) for the Navy in three areas: Large-scale centralized computer system for all formalized Navy training; minicomputers for ...

M. C. Middleton C. J. Papetti G. S. Micheli

1974-01-01

42

The Wear of Polymers by Transfer to Hard, Rough Surfaces.  

National Technical Information Service (NTIS)

A surface topography characterization system consisting of a talysurf 4 profilometer, Zonic analog-to-digital converter and Fast Fourier Transform (FFT), and a Tetronix 4051 minicomputer was interfaced to an IBM 370 digital computer. Software for the comp...

N. S. Eiss

1981-01-01

43

The Little Giant: The IBM Series/1 in Library Applications.  

ERIC Educational Resources Information Center

|This description of the use of IBM Series/1 minicomputers to implement a library automation system includes discussion of current functions of the system, the system configuration, communications capabilities, software, and cost factors. (CLB)|

Hendricks, Donald D.; Manino, Glenn

1987-01-01

44

Proposed MIDAS II Processing Array.  

National Technical Information Service (NTIS)

MIDAS (Modular Interactive Data Analysis System) is a ganged processor scheme used to interactively process large data bases occurring as a finite sequence of similar events. The existing device uses a system of eight ganged minicomputer central processor...

J. Meng

1982-01-01

45

Interprocess Communication Extensions for the UNIX Operating System. I. Design Considerations.  

National Technical Information Service (NTIS)

The UNIX operating system for the PDP-11 series of minicomputers has gained wide popularity in academic and government circles. This report considers interprocess communication (IPC) facilities with the goal of developing an improved IPC capability for UN...

C. A. Sunshine

1977-01-01

46

Interactive Debugger for Software and Firmware.  

National Technical Information Service (NTIS)

A program for interactively debugging software and firmware on an Intercomputer i-50 minicomputer is described. Two processors sharing a common memory are used. The debugger is controlled by standard firmware in one processor, and the firmware and softwar...

M. Gasser

1974-01-01

47

Programming Support Library. Volume II. Guidelines for Implementation of Requirements.  

National Technical Information Service (NTIS)

This report, Volume I, contains implementation guidelines for each paragraph in Volume II with examples drawn from several different types of computer systems ranging from minicomputers to large in-house mainframes and time-sharing systems. The examples s...

C. M. Turcio W. M. Schreyer N. A. Adams W. W. Gaertner

1979-01-01

48

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

National Technical Information Service (NTIS)

The development and implementation of a two-way interactive cable television communication system and its effectiveness in urban administration are described. The four-year experiment tested the minicomputer-controlled interactive instruction of two-way c...

T. F. Baldwin B. S. Greenberg M. P. Block J. B. Eulenberg T. A. Muth

1978-01-01

49

FTD Edit System.  

National Technical Information Service (NTIS)

A 16-terminal, interactive, text processing system is described. The system was designed for post processing of computer translated Russian scientific and technical literature. Sophisticated word processing software is supported on 5 minicomputers organiz...

R. Case L. Berglund

1976-01-01

50

FTD User Communications Development.  

National Technical Information Service (NTIS)

This report describes the evolution of the FTD User Communications System concept from an expanded query facility for specific FTD Scientific and Technical Information System (STIS) to a facility running on a minicomputer and supporting a range at compute...

J. A. Balter A. Tomlinson R. V. Weeks

1979-01-01

51

Integrated Library System (ILS).  

National Technical Information Service (NTIS)

The Integrated Library System (ILS) is a minicomputer-based library automation system designed to support a full range of technical processing and retrieval activities using a single master bibliographic file, (MBF). Current subsystems include: Bibliograp...

C. M. Goldstein R. Borochoff

1981-01-01

52

Integrated library systems.  

PubMed Central

The development of integrated library systems is discussed. The four major discussion points are (1) initial efforts; (2) network resources; (3) minicomputer-based systems; and (4) beyond library automation. Four existing systems are cited as examples of current systems.

Goldstein, C M

1983-01-01

53

Interactive Initialization of Heat Flux Parameters for Numerical Models Using Satellite Temperature Measurements.  

National Technical Information Service (NTIS)

Progress made in HCMM research, including testing the interactive minicomputer system and preparation of a paper on the analysis of regional scale soil moisture patterns, is summarized. An exhibit on remote sensing including a videotape display of HCMM im...

T. N. Carlson

1982-01-01

54

TEK11 Graphics User's Guide.  

National Technical Information Service (NTIS)

The TEK11 graphics library was written for use on PDP-11 minicomputers running the RT-11 operating system to drive Tektronix 4010 graphics display terminals. Library subroutines are coded in FORTRAN and assembly language. The library includes routines to ...

C. R. Stewart W. D. Joubert D. R. Overbey K. A. Stewart

1978-01-01

55

Development of an Automated High Resolution Nuclear Magnetic Resonance Spectrometer.  

National Technical Information Service (NTIS)

Modern NMR-spectrometers generally work in the Fourier mode. Digital mini-computers are an integral part of such spectrometers. The automation of the spectrometer functions is described. A frequency coherent spectrometer system with automatic field-freque...

B. L. Hawkins H. Schneiders

1977-01-01

56

ADDITIONAL PERFORMANCE ASPECTS OF MARCHING METHODS FOR ELLIPTIC EQUATIONS  

Microsoft Academic Search

Additional performance aspects of marching methods for elliptic equations, as embodied in the GEM codes, are presented. These aspects include Neumann boundary conditions in nonorthogonal grids, application to minicomputers and supermicro-computers, vectorization, and comparison to multigrid methods.

Patrick J. Roache

1985-01-01

57

Solving Nonlinear Differential Equations in the Engineering Curriculum  

ERIC Educational Resources Information Center

Described is the Dynamic System Simulation Language (SIM) mini-computer system utilized at the University of California, Los Angeles. It is used by engineering students for solving nonlinear differential equations. (SL)

Auslander, David M.

1977-01-01

58

A Simulation Study of Stradaptive Ability Testing.  

National Technical Information Service (NTIS)

A conventional test and 2 forms of a stradaptive (stratified adaptive) test were administered to thousands of simulated subjects by minicomputer. Characteristics of the three tests using several scoring techniques were investigated while varying the discr...

C. D. Vale D. J. Weiss

1975-01-01

59

TMS Communications Hardware. Volume 2: Bus Interface Unit.  

National Technical Information Service (NTIS)

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 mo...

J. S. Brown G. T. Hopkins

1979-01-01

60

The TRISTAN control system  

Microsoft Academic Search

The 8 GeV accumulation ring and the 30 GeV main ring of TRISTAN, an accelerator-storage ring complex at KEK, are controlled by a highly computerized control system. Twenty-four minicomputers are linked by optical fiber cables to form an N-to-N token ring network. The transmission speed on the cables is 10 Mbps. From each minicomputer, a CAMAC serial highway extends to

Shin-Ichi Kurokawa; Atsuyoshi Akiyama; Kazuhiro Ishii; Eiichi Kadokura; Tadahiko Katoh; Takashi Kawamoto; Eiji Kikutani; Yoshitaka Kimura; Haruyo Koiso; Ichitaka Komada; Kikuo Kudo; Takashi Naito; Katsunobu Oide; Shigeru Takeda; Kenji Uchino; Junji Urakawa; Manabu Shinomoto; Michio Kurihara; Ken-Ichi Abe

1986-01-01

61

Vault Safety and Inventory System users manual, PRIME 2350. Revision 1  

SciTech Connect

This revision is issued to request review of the attached document: VSIS User Manual, PRIME 2350, which provides user information for the operation of the VSIS (Vault Safety and Inventory System). It describes operational aspects of Prime 2350 minicomputer and vault data acquisition equipment. It also describes the User`s Main Menu and menu functions, including REPORTS. Also, system procedures for the Prime 2350 minicomputer are covered.

Downey, N.J.

1994-12-14

62

Automation of a guarded hot plate thermal conductivity instrument  

SciTech Connect

The Thermo-Physics Corporation's GP-1800 guarded hot plate thermal conductivity instrument has been automated using a Digital Equipment Corporation PDP 11/35 minicomputer with an Industrial Control Subsystem Remote. Automation included constructing a hardware link between the instrument and the minicomputer system and designing, writing, and documenting software to perform equipment control, data acquisition, data reduction, and report generation. The software was designed and written so that non-programmers can run the thermal conductivity experiment.

Holland, L.L.

1980-06-01

63

Solving gas-processing problems. Part 1. Homestyle computer could handle process calculations  

SciTech Connect

By handling certain process-engineering calculations, a minicomputer with only 64,000 bytes of memory can greatly reduce the time that engineers spend searching for reasonable process conditions and evaluating the processes. Designed to work in a completely interactive mode, three FORTRAN programs have been developed on the Altair Attache for process-engineering applications (all are easily converted to similar minicomputer systems). Although not intended to supersede large-scale process simulation, these programs optimize the engineer's time by combining the individual's judgment and intuition with the calculational capabilities of a small, relatively cheap computer.

Maddox, R.N.; Erbar, J.H.

1981-01-05

64

Workstations (panel discussion): a complete solution to the VLSI designer?  

Microsoft Academic Search

The dynamics of today's electronics industry introduces enormous pressure on chip designers to come up with chip designs in a very limited time. This is due partly to the short life cycle of application specific products in the marketplace. The availability of powerful graphics processors and microprocessors with processing powers comparable to minicomputers has introduced several stand alone workstations into

Prathima Agrawal; Frederick L. Cohen; Chet A. Palesko; Hung-Fai Stephen Law; Mark Miller; Mike Price; David W. Smith; Nicholas P. Van Brunt

1985-01-01

65

Automatic Classification of gamma-gamma Coincidence Matrices.  

National Technical Information Service (NTIS)

The information obtained during a coincidence experiment, recorded on magnetic tape by a Multi-8 minicomputer, is transferred to a new tape in 36 bit words, using the program LECOM8. The classification in two dimensional matrix form is carried out off-lin...

J. M. Los Arcos Merino J. A. Gonzalez Gonzalez

1978-01-01

66

An Overview of Computers in Education.  

ERIC Educational Resources Information Center

|This overview describes the development, current role, and implications of computers for computer assisted instruction (CAI), computer managed instruction (CMI), simulation, federally funded CAI systems, disciplinary network CAI systems, micro and mini-computer technology, cost effectiveness, future systems, user groups, computer science…

vonFeldt, James R.

67

Central Computing Facility operator training system. [Listings of CCFOTS codes for PDP11\\/20  

Microsoft Academic Search

The problems of providing operational support and operator training for a large-scale computing facility are described. Solutions to the training problem are outlined, and a minicomputer-based training system is discussed. This training system incorporates reference material and multiple choice questions covering all aspects of the computing facility operations. Operator acceptance and test results indicate that this new training method is

C. Douglass; T. Locke; M. Maestas; D. Schultz

1977-01-01

68

Gas stream composition and temperature determination in a coal-fired MHD simulation facility  

Microsoft Academic Search

A minicomputer controlled and monitored test stand for simulation of the gas stream conditions which will exist in various components of a coal-fired baseline MHD power plant and for evaluation of the substructures is described. Emphasis is devoted to the thermal aspects of the design and operation of this facility. A comprehensive thermal model of the system is described, and

R. E. Powe

1978-01-01

69

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

70

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.

71

The FORTH approach to operating systems  

Microsoft Academic Search

FORTH is a programming technique designed for interactive, on-line multi-task minicomputer applications. It features an extensible command set which leads naturally to the development of an application oriented vocabulary and operating system. FORTH combines extreme compactness with high speed performance.

Elizabeth D. Rather; Charles H. Moore

1976-01-01

72

Surface mine pollution abatement and land use impact investigation. Volume IV. An investigation of alternative data systems with a recommendation for a statewide environmental storage and retrieval system. Final report  

Microsoft Academic Search

The objective of this paper was to survey environmental information storage and retrieval systems and to recommend a system. Some of the Federal and state systems were interviewed as well as various alternatives. Also reviewed were vendors and manufacturers' products in the field of automated storage and retrieval, particularly minicomputers and associated peripheral devices. The system proposed was to merge

1975-01-01

73

Comprehensive Package for DNA Sequence Analysis in FORTRAN IV for the PDP-11.  

National Technical Information Service (NTIS)

A computer package written in Fortran-IV for the PDP-11 minicomputer is descibed. The package's novel features are: (i) software for voice-entry of sequence data; (ii) a less memory intensive algoithm for optimal sequence alignment; (iii) and programs tha...

J. Arnold V. K. Eckenrode K. Lemke G. J. Phillips S. W. Schaeffer

1986-01-01

74

Computer Series, 51: Bits and Pieces, 20.  

ERIC Educational Resources Information Center

Describes: Apple stereochemistry program; CNDO/2-INDO mini-computer calculations; direct linear plot procedure for enzyme kinetics calculations; construction of nonlinear Scatchard plots; simulation of mass spectral envelopes of polyisotopic elements; graphics with a dot-matrix printer; MINC computer in the physical chemistry laboratory; hallway…

Moore, John W., Ed.

1984-01-01

75

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

76

Land use survey using remote sensing and geographical information systems  

Microsoft Academic Search

A hybrid system which integrates Remote Sensing (RS) data and Geographical Information Systems (GIS) information, has been developed for land use survey in Hiroshima city. The system consists of three interrelated subsystems, i.e., a personal computer, a minicomputer and an engineering workstation: The system can handle an image data base consisting of satellite digital images such as Landsat TM and

Yuzo Suga

1992-01-01

77

Development of Transformation Equations for Remote Tracking.  

National Technical Information Service (NTIS)

A method to accurately parallax-correct tracking data is needed at the Tonopah Test Range which can be executed by a minicomputer in a very short time. Spherical transformation equations were developed that give very accurate results when adapted to a giv...

R. T. Finnell

1977-01-01

78

The cost and performance tradeoffs of buffered memories  

Microsoft Academic Search

An analysis of the performance enhancement achieved and the incremental costs accrued in buffering (using a cache memory) memory systems is made. Buffering is found to be cost-effective even for minicomputer memories. The study indicates that the flagged registered swap algorithm is superior to three other common algorithms used. It is shown that when jobs are switched, a substantial number

ARTHUR V. POHM; OM P. AGRAWAL; RONALD N. MONROE

1975-01-01

79

Measurement control at an SRS (Savannah River Site) analytical laboratory  

Microsoft Academic Search

The measurement control program includes control of the analytical procedures, analyst training and qualification, and mass and balance control. A DEC 11\\/750 minicomputer and an interfaced Hewlett Packard 9836 desktop computer control these functions. The training and qualification program requires the analyst to analyze known and blind'' standards. Statistical tests for precision and bias are used to determine the analyst's

Wills

1990-01-01

80

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.

81

A Report on the Loading of MARC Format Bibliographic Records into HyperCard.  

ERIC Educational Resources Information Center

|Outlines a process for downloading MARC format bibliographic data into a form readable for an Apple Macintosh computer running HyperCard software. Loading procedures for two data sources--an OCLC format tape and records from UCLA's ORION public access catalog--are discussed, and the use of a minicomputer system is considered. (eight references)…

Rosenberg, Jason B.; Borgman, Christine L.

1991-01-01

82

Integrated theory and practice - an approach to the first computer science course  

Microsoft Academic Search

In 1975 the authors began an undergraduate computer science major and devised a one year foundation course as the basic building block of this major. The dual objectives of this foundation course are explained; an easily accessible minicomputer environment for interactive FORTRAN program development work in this course is also described. As the authors now look back to 1975 the

Walter S. Szalajka; Philip Walch

1979-01-01

83

Biomedical Applications of MWPC'S for Digital Imaging of Soft beta sup - Emitters.  

National Technical Information Service (NTIS)

We have built an experimental facility equipped with MultiWire Proportional Chambers and a PDP 11/23 mini-computer for the digital imaging of two-dimensional sup 3 H distributions in biological and medical applications. A spatial resolution of approx.1.5 ...

R. Bellazzini A. Del Guerra M. M. Massai G. Spandre

1983-01-01

84

DATA ACQUISITION SYSTEM FOR RAPID KINETIC EXPERIMENTS  

EPA Science Inventory

A data acquisition system has been developed to collect, analyze and store large volumes of rapid kinetic data measured from a stopped-flow spectrophotometer. A digital minicomputer, with an A/D converter, tape drive unit and formatter, analog recorder, oscilloscope, and input/ou...

85

Computer Series, 51: Bits and Pieces, 20.  

ERIC Educational Resources Information Center

|Describes: Apple stereochemistry program; CNDO/2-INDO mini-computer calculations; direct linear plot procedure for enzyme kinetics calculations; construction of nonlinear Scatchard plots; simulation of mass spectral envelopes of polyisotopic elements; graphics with a dot-matrix printer; MINC computer in the physical chemistry laboratory; hallway…

Moore, John W., Ed.

1984-01-01

86

PLAYBK-Routines to Drive a Digital-to-Analog Converter.  

National Technical Information Service (NTIS)

Two software drivers have been written to control a digital-to-analog (D/A) converter on a PDP-11/45 minicomputer. One driver is a stand-alone program which outputs user specified data to the D/A converter at a user specified rate and scale factor. The se...

J. R. Carlberg

1981-01-01

87

Cgraph - A FORTRAN Callable Graphics Library.  

National Technical Information Service (NTIS)

A description of and a user's manual for a FORTRAN callable graphics library is presented. The routines are written in FORTRAN 77 and developed on an IBM AT compatible microcomputer and a DEC MicroVAX minicomputer. The routines are organized so that many ...

S. L. Puterbaugh

1990-01-01

88

A General Review of China's Research Work in CALI.  

ERIC Educational Resources Information Center

|Almost all research and development work in China in computer-assisted language instruction is done on micro- and minicomputers because they are more feasible financially. Describes some English as a foreign language and Chinese language courseware and courseware needs. (Author/LMO)|

Chuan de, Zhang

1987-01-01

89

FIFTH VAVILOV CONFERENCE ON NONLINEAR OPTICS, NOVOSIBIRSK, JUNE 1977: Compact static wavelength meter for both pulsed and cw lasers  

Microsoft Academic Search

A description is given of a working model of a self-contained universal wavelength meter incorporating an optical wedge (Fizeau) interferometer and a minicomputer for processing the interference pattern and calculating the wavelength. The meter is suitable for pulsed and cw lasers and can operate over a wide frequency range from ultraviolet to far infrared.

J. J. Snyder

1978-01-01

90

Data acquisition system and instrumentation for the Rocky Mountain I Coal Gasification test  

Microsoft Academic Search

Lawrence Livermore National Laboratory (LLNL) designed the data acquisition system (DAS) to measure all surface and subsurface process parameters during the Rocky Mountain I (RM I) Underground Coal Gasification (UCG) test. The Hewlett Packard (HP) minicomputer-based system acquired data from strings of type-K thermocouples that were emplaced in vertical wells at key locations in the reactor area. Process data such

G. A. Metzger; J. A. Britten

1988-01-01

91

A comprehensive package for DNA sequence analysis in FORTRAN IV for the PDP-11.  

PubMed

A computer package written in Fortran-IV for the PDP-11 minicomputer is described. The package's novel features are: software for voice-entry of sequence data; a less memory intensive algorithm for optimal sequence alignment; and programs that fit statistical models to nucleic acid and protein sequences. PMID:3003673

Arnold, J; Eckenrode, V K; Lemke, K; Phillips, G J; Schaeffer, S W

1986-01-10

92

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

93

Computerized rapid analysis of complex mixtures by gas chromatography  

Microsoft Academic Search

A computerized rapid analysis system and its application to two research problems are described. The system uses one central minicomputer to gather analog and digital data from several instruments. Various programs calibrate and convert the data into formatted reports. If desired, this computer sends the report to a more powerful mainframe computer for comparison of different reports and establishment of

Demirgian

1984-01-01

94

Historical editions in the States  

Microsoft Academic Search

A late 1990 survey found that most historical editors in the United States continue to use the computer primarily as a word processing tool to prepare texts and editorial apparatus. Among older projects, a migration from mainframe or mini-computers to PCs has been the norm. New developments in the field include the Founding Fathers CD-ROM project, the impending release of

David R. Chesnutt

1991-01-01

95

Flexible architecture for cheap number crunching  

SciTech Connect

Some of the key design features of the analogic AP400 array processor are described. These include putting the control of pipelined arithmetics into hardware, and incorporating fifo buffering to direct operations with the convenience of minicomputer type software. The processor architecture and command and address buffering are discussed. 1 reference.

Shapiro, G.

1980-01-01

96

Export Booking and Billing System (EBBS). Volume I.  

National Technical Information Service (NTIS)

EBBS is an on-line shipping information processing system using minicomputers. It operates and controls local/remote network of terminals for real time data entry and retrieval at high speed. It serves the needs of Traffic Control, Booking, Documentation ...

N. V. Junnarkar

1979-01-01

97

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

98

Using a Personal Digital Assistant to Streamline the OR Workload  

Microsoft Academic Search

•PERSONAL DIGITAL ASSISTANTS (PDAs), are handheld minicomputers used for tasks such as referencing, documentation, and data storage and retrieval.•THESE DEVICES can help perioperative nurses solve problems associated with updating, maintaining, and retrieving surgical preference cards and accessing treatment and medication references.•CHOOSING A PDA and accessories, finding basic software, and writing a perioperative nursing program can be painless, even for a

Lisa McCord

2003-01-01

99

Computers and Kids: A New Center Offers Children Hands On Experience.  

ERIC Educational Resources Information Center

|Discusses computer programs and courses offered to children and teachers at the new Future Center at the Capital Children's Museum, and describes the displays and activities of the communications exhibit and Kid-Net, a minicomputer based time-sharing system for which a series of computer programs for use by visitors will be developed. (RBF)|

Homes, Edith

1981-01-01

100

Sun Series Program for the REEDA System.  

National Technical Information Service (NTIS)

Modifications made to data bases and to four programs in a series of computer programs (Sun Series) which run on the REEDA HP minicomputer system to aid NASA's solar activity predictions used in orbital life time predictions are described. These programs ...

R. W. Shankle

1980-01-01

101

Technological Discontinuities and Dominant Designs: A Cyclical Model of Technological Change.  

ERIC Educational Resources Information Center

Based on longitudinal studies of the cement, glass, and minicomputer industries, this article proposes a technological change model in which a technological breakthrough, or discontinuity, initiates an era of intense technical variation and selection, culminating in a single dominant design and followed by a period of incremental technical…

Anderson, Philip; Tushman, Michael L.

1990-01-01

102

User Guide to the SRS Data Logging Facility. 1. Storing and Archiving Data.  

National Technical Information Service (NTIS)

The state of the SRS is recorded every two minutes, thus providing a detailed History of its parameters. Recording of History is done via the SRS Computer Network. This consists of a Master Computer, an Interdata 7/32, and three Minicomputers, Interdata 7...

B. E. Tyson

1979-01-01

103

Simplified extension of the LSI11 Q-Bus for a high energy laser control application  

Microsoft Academic Search

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 micoprocessors. The remote nodes of the Antares control network are based on an LIS-11\\/2 microcomputer interfaced to an STD Bus. This machine interface or MI forms the intelligent process controller located directly adjacent to

L. Burczyk

1981-01-01

104

Radioactivities in returned lunar materials and in meteorites  

NASA Astrophysics Data System (ADS)

Carbon 14 terrestial ages were determined with low level minicomputers and accelerator mass spectrometry on 1 Yamato and 18 Allan Hills and nearby sited meteorites. Techniques for an accelerator mass spectrometer which make C(14) measurements on small samples were developed. Also Be(10) concentrations were measured in Byrd core and Allan Hills ice samples.

Fireman, E. L.

1984-01-01

105

Maxicalculators for the Whole School. Illinois Series on Educational Applications of Computers. Number 5.  

ERIC Educational Resources Information Center

A brief review is presented of the characteristics of four maxicalculators (HP 9830, Wang 2200, IBM 5100, MCM/700) and two minicomputers (Classic, Altair 8800). The HP 9830 and the Wang 2200 are thought to be the best adapted to serve entire schools and their unique properties are discussed. Some criteria of what should be taken into account in…

Doring, Richard; Hicks, Bruce

106

Digital simulation of two models of the biological disposition of inhaled plutonium  

Microsoft Academic Search

Two mathematical models which describe the retention and translocation of inhaled plutonium were simulated on BNW's minicomputer system MINERVA. Equation parameters are obtained by matching the simulation to data gathered by several studies at BNW. Interactive graphics techniques are described which facilitate the data fitting process. This document is meant to serve as a progress report on a continuing effort

P. J. Dionne; T. P. Harrington

1976-01-01

107

Computer Data Acquisition Applications in the Materials Science Laboratory.  

ERIC Educational Resources Information Center

Described are applications of computer data acquisition to three laboratories in materials science at the United States Naval Academy. In each laboratory, data are input to a minicomputer, scaled using previously obtained and stored calibration factors to convert the transducer signals to load, displacement, temperature, etc., and then stored on…

Mitchell, Eugene E., Ed.

1980-01-01

108

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...

109

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…

White, James W.

110

SP-100 control system modeling  

NASA Astrophysics Data System (ADS)

SP-100 Control Systems modeling was done using a thermal hydraulic transient analysis model called ARIES-S. The ARIES-S Computer Simulation provides a basis for design, integration and analysis of the reactor including the control and protection systems. It is a modular digital computer simulation written in FORTRAN that operates interactively in real time on a VAX minicomputer.

Meyer, R. A.; Halfen, F. J.; Alley, A. D.

111

Technology in Libraries: 1960-2000.  

ERIC Educational Resources Information Center

|New technologies used by libraries include computers, minicomputers, photocopiers, audiovisual equipment, videocable, and satellite. Cataloging is a major area of computer application, with the MARC (MAchine Readable Cataloging) format developed by the Library of Congress providing batch mode services, and the more sophisticated OCLC (Ohio…

Martin, Susan K.

112

The TRISTAN control system  

NASA Astrophysics Data System (ADS)

The 8 GeV accumulation ring and the 30 GeV main ring of TRISTAN, an accelerator-storage ring complex at KEK, are controlled by a highly computerized control system. Twenty-four minicomputers are linked by optical fiber cables to form an N-to-N token ring network. The transmission speed on the cables is 10 Mbps. From each minicomputer, a CAMAC serial highway extends to the controlled equipment. At present, twenty minicomputers are connected to the network and are used to control the accumulation ring. The software system is based on the NODAL language devised at the CERN SPS. The KEK NODAL system retains main features of the original NODAL: the interpretive scheme, the multi-computer programming facility, and the data-module concept. In addition, it has the following features: (1) fast execution due to the compiler-interpreter method, (2) a multi-computer file system (3), a full-screen editing facility, and (4) a dynamic linkage scheme for data modules and NODAL functions. The accelerators are operated through five operator consoles, each of which is managed by one minicomputer in the network. An operator console contains two 20-inch high-resolution color graphic displays, a pair of touch-panels, and ten small TV monitors. One touch-panel is used to select a program and a piece of equipment to be controlled; the other is used mainly to perform the console actions.

Kurokawa, Shin-Ichi; Akiyama, Atsuyoshi; Ishii, Kazuhiro; Kadokura, Eiichi; Katoh, Tadahiko; Kawamoto, Takashi; Kikutani, Eiji; Kimura, Yoshitaka; Koiso, Haruyo; Komada, Ichitaka; Kudo, Kikuo; Naito, Takashi; Oide, Katsunobu; Takeda, Shigeru; Uchino, Kenji; Urakawa, Junji; Shinomoto, Manabu; Kurihara, Michio; Abe, Ken-Ichi

1986-06-01

113

Problems and Solutions in Descriptive Cataloging of Microcomputer Software  

Microsoft Academic Search

Once collections of microcomputer software are established in a library, they grow like wildfire, requiring bibliographic control. Control should have been furnished by AACR2, however, Chapter 9, designed to deal with macro- or minicomputer software, was difficult to apply to microcomputer software. Responding to demand from the field, a Task Force of ALA's Committee Cataloging: Description and Access devised Guidelines

Sheila S. Intner

1985-01-01

114

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…

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

2010-01-01

115

Speak Out and Touch Someone. The OMLTA Yearbook, 1983.  

ERIC Educational Resources Information Center

|A number of topics of interest to secondary school foreign language teachers are discussed in this issue. The following articles are included: (1) "Teaching and Learning a Foreign Language via Tele(Video)phone: A Futuristic Mini-Computer Design," by G. Harewood; (2) "Meeting Students' Communication Needs," by B. Marckel and "Functional/Notional…

Snyder, Barbara, Ed.

116

The Rise of K-12 Blended Learning: Profiles of Emerging Models  

ERIC Educational Resources Information Center

|Some innovations change everything. The rise of personal computers in the 1970s decimated the mini-computer industry. TurboTax forever changed tax accounting, and MP3s made libraries of compact discs obsolete. These innovations bear the traits of what Harvard Business School Professor Clayton M. Christensen terms a "disruptive innovation."…

Staker, Heather

2011-01-01

117

Thoth, a portable real-time operating system  

Microsoft Academic Search

Thoth is a real-time operating system which is designed to be portable over a large set of machines. It is currently running on two minicomputers with quite different architectures. Both the system and application programs which use it are written in a high-level language. Because the system is implemented by the same software on different hardware, it has the same

David R. Cheriton; Michael A. Malcolm; Lawrence S. Melen; Gary R. Sager

1979-01-01

118

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.

119

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

120

A Detailed Comparison of Maxicalculators. Illinois Series on Educational Applications of Computers. Number 6.  

ERIC Educational Resources Information Center

|A comparison is made of four maxicalculators and two minicomputers with an emphasis on two, the HP 9830 and the Wang 2200. Comparisons are in the form of a table with individual guidelines for analysis followed by the specific characteristics of the particular calculator. Features compared include: manual input facilities, screen, secondary…

Doring, Richard; Hicks, Bruce

121

Technological Discontinuities and Organizational Environments.  

ERIC Educational Resources Information Center

|Technological effects on environmental conditions are analyzed using longitudinal data from the minicomputer, cement, and airline industries. Technology evolves through periods of incremental change punctuated by breakthroughs that enhance or destroy the competence of firms. Competence-destroying discontinuities increase environmental turbulence;…

Tushman, Michael L.; Anderson, Philip

1986-01-01

122

New Information Technologies: Some Observations on What Is in Store for Libraries.  

ERIC Educational Resources Information Center

|This outline of new technological developments and their applications in the library and information world considers innovations in three areas: automation, telecommunications, and the publishing industry. There is mention of the growth of online systems, minicomputers, microcomputers, and word processing; the falling costs of automation; the…

Black, John B.

123

[Trial digitalization of analog-data obtained from the AutoAnalyzer].  

PubMed

The AutoAnalzer(Basic Model) manufactured on Technicon corporation was a very useful instrument for clinical laboratory automation, but it was necessary to convert the data obtained from the instrument to digital values used the chart reader. This was very troublesome and there was apprehension that there would be errors in A-D conversion. We tried converting data obtained from the AutoAnalzer to a digital value by on-line connection of the instruments with minicomputers(LINC-8 and FACOM-R). The output of the recorder was converted to voltage(0 to 100 V) using a potentiometer, quantitated(0 to 1.000) by the A-D converter attached to LINC-8, and processed by the minicomputer. The control-box was an experimental device mainly designed for the convenience of users. The functions of the control-box were designated analytical items, No. of A-D converters, start and stop of the AutoAnalzer operation to the minicomputer. Employing the control-box, a technician operated this system freely, without direct computer operation. We established a generally satisfactory system for clinical laboratory automation using the minicomputer. PMID:11215180

Omori, S

2000-10-01

124

A color graphics system for I.C. mask design and analysis  

Microsoft Academic Search

In view of the continuing requirement for good interactive tools in the area of computer aided design, an advanced high-resolution monochrome and color, mini-computer controlled, graphics display has been designed and built. Considering the particular area of integrated circuit mask design, the ability to produce filled, color coordinated shapes extends the designer's interpretation of displayed layouts to a level not

N. Weste

1978-01-01

125

FOCUS - A Computerized Aid for Making Sound Propagation Forecasts.  

National Technical Information Service (NTIS)

A computerized aid for use in making predictions of far-field sound propagation in the atmosphere is described. The computer program, which was written for a PDP 11/45 minicomputer, traces acoustic rays through a moving, stratified, vertically-inhomogeneo...

J. P. Kahler

1979-01-01

126

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...

127

The Local Area Network (LAN) and Library Automation.  

ERIC Educational Resources Information Center

Discussion of the use of inexpensive microcomputers in local area information networks (LAN) notes such minicomputer problems as costs, capacity, downtime, and vendor dependence, and the advantages of using LAN in offices and libraries, less costly LAN upgrades, library vendors and LAN systems, and LAN problems. A 28-item bibliography is provided.…

Farr, Rick C.

1983-01-01

128

Will Proposed Standard Make Mobile Phones More Secure?  

Microsoft Academic Search

Smart phones are becoming increasingly popular. Offering Internet connectivity, they function like minicomputers and can download a growing variety of applications and files, store personal information such as credit card numbers, and even conduct financial transactions. But as smart phones become more sophisticated, they are also becoming targets for hackers and virus writers. Because of increasing e-commerce capabilities, there is

Neal Leavitt

2005-01-01

129

Integrated library systems.  

PubMed

The development of integrated library systems is discussed. The four major discussion points are (1) initial efforts; (2) network resources; (3) minicomputer-based systems; and (4) beyond library automation. Four existing systems are cited as examples of current systems. PMID:6354321

Goldstein, C M

1983-07-01

130

Optimizing remote offshore drilling operations  

Microsoft Academic Search

Gulf of Suez Petroleum Company's experience in using mini-computers as an aid in controlling drilling operations has been an unqualified success. Current uses include optimization of drilling operations, storage and retrieval of well data and word processing of standard programs. As a result, overall drilling costs, problems and manpower requirements have been lessened. This work discusses the computer system, its

W. F. Deerhake; F. Khalaf; J. A. Seehafer

1981-01-01

131

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…

Pierce, A. R.

132

The Use of Computer Networks in Data Gathering and Data Analysis.  

ERIC Educational Resources Information Center

|This document describes the review, analysis, and decision-making process that Trinity University, Texas, went through to develop the three-part computer network that they use to gather and analyze EEG (electroencephalography) and EKG (electrocardiogram) data. The data are gathered in the laboratory on a PDP-1124, an analog minicomputer. Once…

Yost, Michael; Bremner, Fred

133

Technical Processing Librarians in the 1980's: Current Trends and Future Forecasts.  

ERIC Educational Resources Information Center

|This review of recent and anticipated advances in library automation technology and methodology includes a review of the effects of OCLC, MARC formatting, AACR2, and increasing costs, as well as predictions of the impact on library technical processing of networking, expansion of automation, minicomputers, specialized reference services, and…

Kennedy, Gail

1980-01-01

134

Acquisitions Systems: Sydney Micro Library System.  

ERIC Educational Resources Information Center

|The Sydney Micro Library System is a microcomputer-based integrated library system with cataloging, inquiry, and system management modules that form the base system for running the optional acquisitions, circulation, serials, and MARC record modules. Designed for small special libraries, the system has parallel minicomputer and microcomputer…

Desmarais, Norman

1986-01-01

135

RAMAS: The RITL Automated Management System. Master Control and Periodicals Control Subsystems. Stockholm Papers in Library and Information Science.  

ERIC Educational Resources Information Center

|An automated minicomputer-based library management system is being developed at the Swedish Royal Institute of Technology Library (RITL). RAMAS (the RITL Automated Management System) currently deals with periodical check-in, claiming, index-handling, and binding control. A RAMAS bibliographic record can be accessed from eight different points…

Ya-chun, Lian

136

Telescopes: Control by Software for Amateurs  

NASA Astrophysics Data System (ADS)

In 1970 an amateur might dream of access to a state-of-the-art small institutional telescope run by a $150 000 minicomputer with 4K memory using assembly language programming. By the mid-1980s, small numbers of amateurs were building computer-operated telescopes thanks to hardware advances in the form of the personal computer....

Bartels, M.; Murdin, P.

2003-04-01

137

An Examination of the Potential Relationship between Technology and Persistence among At-Risk College Students  

ERIC Educational Resources Information Center

|Academically underprepared college students, i.e., those identified as needing developmental (remedial) English, mathematics and reading courses in order to maximize their potential for academic success at college-level studies, were provided with the opportunity to rent, for a minimal, subsidized fee, mini-computers bundled with digital course…

Hughey, Aaron W.; Manco, Charlene M.

2012-01-01

138

Development of fine pitch (54 ?m) flip chip on flex interconnection process  

Microsoft Academic Search

Lighter, smaller, faster and cheaper are the magic words used to describe the trends in modern electronics. The miniaturization is a must in the market of the portable devices. Beside of the mobile phones there are several other application areas like smart cards, smart cloths, portable minicomputers, cameras, entertainment electronics and so on. The big challenge is to find the

Jarmo Maattanen; Petten Palm; Y. De Maquille; Nicolas Bauduin

2002-01-01

139

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

140

A Simulation Study of Stradaptive Ability Testing. Research Report 75-6.  

ERIC Educational Resources Information Center

A conventional test and two forms of a stradaptive test were administered to thousands of simulated subjects by minicomputer. Characteristics of the three tests using several scoring techniques were investigated while varying the discriminating power of the items, the lengths of the tests, and the availability of prior information about the…

Vale, C. David; Weiss, David J.

141

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

142

Proceedings of the Canadian Symposium on Instructional Technology (Calgary, Alberta, May 24-26, 1972).  

ERIC Educational Resources Information Center

A Symposium was held in May of 1972 to assist in the resolution of the varied problems effecting the advance of educational technology. Most of the papers presented at the symposium dealt with the current situation of various aspects of computer assisted instruction (CAI) throughout Canada. Other papers covered CAI centralization, minicomputers,…

National Research Council of Canada, Ottawa (Ontario).

143

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

144

The MESORAD dose assessment model: Computer code  

Microsoft Academic Search

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

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

1988-01-01

145

Attitude control of a triple inverted pendulum  

Microsoft Academic Search

The paper is concerned with the attitude control of a triple inverted pendulum. The lowest hinge is free for rotation and the torques of the upper two hinges are manipulated not only to stabilize the pendulum but also to control its attitude. The control system is designed by using CAD developed by the author and is realized by a minicomputer.

K. FURUT; T. OCHIAI; N. ONO

1984-01-01

146

Variation of mechanical energy levels for normal and prosthetic gait  

Microsoft Academic Search

Mechanical energy levels were investigated for normals and for below-knee amputees during level walking. The weight of the prostheses was varied by attaching 0.5 kg extra weight to the prostheses. The measurements and analyses were made with the ENOCH system consisting of a minicomputer (HP 21 MX), an optoelectroni c device for displacement data measurement (Selspot) and a force plate

H. LANSHAMMAR

147

A computer controlled tele-cobalt unit.  

PubMed

A computer controlled cobalt treatment unit was commissioned for treating patients in January 1980. Initially the controlling computer was a minicomputer, but now the control of the therapy unit is by a microcomputer. The treatment files, which specify the movement and configurations necessary to deliver the prescribed dose, are produced on the minicomputer and then transferred to the microcomputer using minitape cartridges. The actual treatment unit is based on a standard cobalt unit with a few additional features e.g. the drive motors can be controlled either by the computer or manually. Since the treatment unit is used for both manual and automatic treatments, the operational procedure under computer control is made to closely follow the manual procedure for a single field treatment. The necessary safety features which protect against human, hardware and software errors as well as the advantages and disadvantages of computer controlled radiotherapy are discussed. PMID:7153106

Brace, J A

1982-11-01

148

A computer controlled tele-cobalt unit  

SciTech Connect

A computer controlled cobalt treatment unit was commissioned for treating patients in January 1980. Initially the controlling computer was a minicomputer, but now the control of the therapy unit is by a microcomputer. The treatment files, which specify the movement and configurations necessary to deliver the prescribed dose, are produced on the minicomputer and then transferred to the microcomputer using minitape cartridges. The actual treatment unit is based on a standard cobalt unit with a few additional features e.g. the drive motors can be controlled either by the computer or manually. Since the treatment unit is used for both manual and automatic treatments, the operational procedure under computer control is made to closely follow the manual procedure for a single field treatment. The necessary safety features which protect against human, hardware and software errors as well as the advantages and disadvantages of computer controlled radiotherapy are discussed.

Brace, J.A.

1982-11-01

149

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

150

Energy utilization of electric and hybrid vehicles  

Microsoft Academic Search

This paper discusses energy utilization and power train efficiency of electric and electric\\/flywheel hybrid vehicles. Results of EVSIM (a digital simulation program) and test data obtained from a mini-computer controlled dynamometer facility are presented. It is shown that the marginal improvement of vehicle range due to regenerative braking does not justify the complexity of its controls. Similarly, while the electric\\/flywheel

P. D. Agarwal; T. C. Wang

1982-01-01

151

Development of educational software using the DEC PDP11  

Microsoft Academic Search

During the past two years, the Waterloo Foundation for the Advancement of Computing (WATFAC) and the University of Waterloo have been developing educational software in a number of projects using DEC PDP-11 minicomputers. These projects include the development of WATFOR-11 (a load-and-go FORTRAN compiler), WATBOL-11 (a load-and-go COBOL compiler), and WIDJET (a student editing and job-entry system). This paper presents

D. D. Cowan; P. H. Dirksen; J. W. Craham; J. W. Welch

1976-01-01

152

Development of educational software using the DEC PDP11  

Microsoft Academic Search

During the past two years, the Waterloo Foundation for the Advancement of Computing (WATFAC) and the University of Waterloo have been developing educational software in a number of projects using DEC PDP-11 mini-computers. These projects include the development of WATFOR-11 (a load-and-go FORTRAN compiler), WATBOL-11 (a load-and-go COBOL compiler), and WIDJET (a student editing and job-entry system). This paper presents

D. D. Cowan; P. H. Dirksen; J. W. Graham; J. W. Welch

1976-01-01

153

Partitioned and modified chirp Z-transform: Signal processing technique for simultaneous multifrequency evaluation of the surface reradiated spectrum in slowly varying environments  

Microsoft Academic Search

The partitioned and modified chirp Z-transform (PAM-CZT) is a signal processing technique for computing the Z-transform of a sequence at equally spaced samples on a sector of the unit circle in the Z-plane. Unlike the computationally cumbersome classical technique (4), the PAM-CZT utilizes the fast Fourier transform (FFT) that allows real time implementation with state of the art minicomputers. Another

JAMES F. FERRIE; CARL W. NAWROCKI; G. CLIFFORD CARTER

1973-01-01

154

Computers for artificial intelligence a technology assessment and forecast  

Microsoft Academic Search

This study reviews the development and current state-of-the-art in computers for artificial intelligence, including LISP machines, AI workstations, professional and engineering workstations, minicomputers, mainframes, and supercomputers. Major computer systems for AI applications are reviewed. The use of personal computers for expert system development is discussed, and AI software for the IBM PC, Texas Instrument Professional Computer, and Apple MacIntosh is

1986-01-01

155

Postprocessor for an Automatic Programmed Tool (APT) processor. [For converting data to proper format, in FORTRAN IV and assembly language for PDP-II computer  

Microsoft Academic Search

A postprocessor program was written for converting United Computing Corporation Automatic Programmed Tool (APT) cutter location data to a format compatible with the Ex-Cell-O 921\\/922 turning machines equipped with DDNC or a Bendix 1800 Control. The program is written in MACRO-11 and FORTRAN IV language for the PDP-11\\/10 minicomputer, and is run under control of the computer's disk operating system

1976-01-01

156

A miniprocessor PDP8\\/e-based system for investigations of on-line language processing: Automated program for psycholinguistic experiments (APPLE)  

Microsoft Academic Search

An on-line reaction time program designed for psycholinguistics research implemented on a DEC PDP8\\/e minicomputer is described.\\u000a Current applications include: phoneme monitor, click detection, lexical decision, and sentence verification experiments. This\\u000a assembly language program (PAL8) displays alphanumeric texts on remoted oscilloscopes and records decision-dependent response\\u000a times with 1-msec accuracy. The system allows for simultaneous testing of three subjects. It operates

William Onifer; Max Hirshkowitz; David Swinney

1978-01-01

157

What Employers Look For In Hiring Computer Science Graduates (Panel Discussion)  

Microsoft Academic Search

Hewlett-Packard hires computer science undergraduates into summer and co-op programs and graduates (BS, MS, and PhD) into full time positions. Up until 1966, Hewlett-Packard developed only electronic, medical, and analytic instrumentation. With the introduction of the minicomputer (HP 2116) in 1967, a table-top calculator (HP 9800) in 1968, the hand-held calculator (HP-35), and a business computer (HP 3000) in 1972

Ken Rothmuller; M. M. Irvine; John N. Shoosmith

1978-01-01

158

Heat capacity measurements by computer-interfaced DSC  

Microsoft Academic Search

A computer assisted heat capacity measuring system has been designed from commercial components. A differential scanning calorimeter of type Perkin-Elmer DSC-2 forms the basis for measurements from 100 to 1000 K. A Hewlett-Packard calculator (minicomputer) of type 9821 is the data handling system. The data are collected and permanently stored on teletape. The program has been written to govern measurement

U. Gaur; A. Mehta; B. Wunderlich

1978-01-01

159

X- And y-axis driver for rotating microspheres  

DOEpatents

Apparatus for precise control of the motion and position of microspheres for examination of their interior and/or exterior. The apparatus includes an x- and y-axis driver mechanism controlled, for example, by a minicomputer for selectively rotating microspheres retained between a pair of manipulator arms having flat, smooth end surfaces. The driver mechanism includes an apertured plate and ball arrangement which provided for coupled equal and opposite movement of the manipulator arms in two perpendicular directions.

Weinstein, Berthold W. (Livermore, CA)

1979-01-01

160

The LS\\/2000 Serials Control Subsystem  

Microsoft Academic Search

The OCLC LSl2000 Serials Control Subsystem is a union of a minicomputer-based local system with the micro-based SC350. Links between the Serials Control Subsystem, LSl2000 local system and the OCLC Online Union Catalog provide users with the benefits of centralized shared information in a local environment. The full range of serials capabilities from initial bibliographic verification to union listing is

Sharon Walbridge

1986-01-01

161

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

162

The use of computer networks in data gathering and data analysis  

Microsoft Academic Search

In our research, the data are gathered in the laboratory on a DEC PDP-11\\/24 minicomputer. Once the data are gathered, they\\u000a are analog-to-digital (A\\/D) converted and sent by the PDP to an IBM 370-3031. The data are submitted to a Fast Fourier Transform\\u000a (FFT) on the IBM computer. Once the FFT is completed, the data are accessed by an IBM

Michael Yost; Fred Bremner

1985-01-01

163

Coaxial jets with and without swirl  

Microsoft Academic Search

Measured values of mean velocity, Reynolds stresses and probability density distributions of fluctuating velocity are reported for the turbulent coaxial jets, with and without swirl, emerging into stagnant surroundings from a long pipe and an annulus concentric with the pipe. They were obtained using hot-wire anemometry and on-line data processing with the aid of a mini-computer. The results show that

M. M. Ribeiro; J. H. Whitelaw

1980-01-01

164

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

165

From Justification to Selection: An Automated Supervisory System for the East Vacuum Grayburg-San Andres Unit  

Microsoft Academic Search

Phillips Petroleum Company, as operator for the East Vacuum Grayburg-San Andres Unit, New Mexico, has included an innovative automated supervisory system in the Unit's development plan. The system, featuring redundant minicomputers, approximately 200 microprocessor-based remote terminal units, UHF-radio communications, automatic well testing, and local pumpoff and injection controllers, will increase Unit profitability by improving operation and management of the enhanced

Leslie Krusen III

1981-01-01

166

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

167

Hierarchical tree-structured control network for the Antares laser facility  

Microsoft Academic Search

The design and implementation of a distributed, computer-based control system for the Antares 100-kJ gas laser fusion facility is presented. Control system requirements and their operational interrelationships that consider both integrated system control and individual subsystem control are described. Several configurations of minicomputers are established to provide direct control of sets of microcomputers and to provide points of operator-laser interaction.

McGirt

1979-01-01

168

Optimizing Xenix I/O  

SciTech Connect

High performance microprocessors, inexpensive Winchester disk drives and low cost high density dynamic random access memories are making it feasible to incorporate minicomputer operating systems such as Unix into multiuser/multitasking microcomputers. However, before Unix and its derivatives can be efficiently integrated into a microcomputer environment, certain I/O and memory management hardware design problems previously limited to larger computer systems must be solved. These are discussed.

Bottorff, P.; Potts, B.

1983-08-01

169

Microcomputer speeds mainframe programs  

Microsoft Academic Search

The work environment of the petroleum professional has changed dramatically in the past several years. Since the 1960s, computers have changed the approach to problem solution for technical personnel. The early batch-processing approach to project analysis gave way to the more flexible timesharing approach. The 1970s saw the development of multi-user minicomputers, which offered increased capabilities and reduced costs compared

Humphries

1984-01-01

170

Riser unit covers all angles  

SciTech Connect

A riser angle positioning system (RAPS), which measures the angle of selected joints in the riser system and, through the use of a mini-computer develops information on the vessel-wellhead position reference, is described. The system currently is employed on the drillship, Discoverer Seven Seas, which is currently drilling wells in approx. 4000 ft of water. The RAPS provides a backup system for more conventional acoustic systems. Sample calculations are included. (BLM)

Dean, Q.W.

1980-06-05

171

Characterization of coal-derived liquids and other fossil fuel related materials employing mass spectrometry. Mass spectrometry and fossil-energy conversion technology: a review. Quarterly report, March 30June 29, 1978  

Microsoft Academic Search

The following activities in regard to the development of micromolecular probe distillation in combination with field-ionization mass spectrometry (FI\\/MS) for quantitative analysis are reported. The temperature-control module for the direct-introduction probe was received and successfully interfaced to both the probe and the NOVA 3\\/12. Both temperatures and FI\\/MS data were minicomputer acquired for probe distillation of a 19 component synthetic

Scheppele

1978-01-01

172

SANDUS (Sandia Digital Underground System) (MA 164) command system message and data format  

Microsoft Academic Search

The SANDUS (Sandia Digital Underground System - MA164 Digital Data Acquisition System) is controlled by either an internal or external minicomputer via the TA485A Controller. This controller is used to set up the TA484A Multiplexer, TA618 Real Time Multiplexer, TA489A Calibrator, TA486A Programmer Timer, TA566A Power Controller\\/Encoder and TA488B Trigger Generator. It also sets the voltage gain and offset, presample

Ebinger

1988-01-01

173

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

174

In-phase and out-of-phase axial-torsional fatigue behavior of Haynes 188 at 760 C  

Microsoft Academic Search

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

Sreeramesh Kalluri; Peter J. Bonacuse

1991-01-01

175

A Deepwater Vessel and Riser Monitoring Program  

SciTech Connect

A Deepwater Vessel and Riser Measurement Program collected 93 days of data describing 83 channels of environmental conditions, vessel response, and riser response in 1700 feet of water in the Gulf of Mexico. On the order of 10 million data measurements were recorded using a minicomputer-controlled data acquisition system. This program has produced the most comprehensive and extensive field database for such systems to date.

Kotch, M.A.

1983-05-01

176

Medical serials control systems by computer--a state of the art review.  

PubMed

A review of the problems encountered in serials control systems is followed by a description of some of the present-day attempts to solve these problems. Specific networks are described, notably PHILSOM (developed at Washington University School of Medicine Library), the UCLA Biomedical Library's system, and OCLC in Columbus, Ohio. Finally, the role of minicomputers in present and future developments is discussed, and some cautious guesses are made on future directions in the field. PMID:1247704

Brodman, E; Johnson, M F

1976-01-01

177

Phases of neon monolayers adsorbed on basal plane graphite  

Microsoft Academic Search

The first monolayer of neon adsorbed on exposed basal planes of graphite has been explored in detail by means of heat capacity measurements on 15 different coverages ranging from 0.06 to 0.91 monolayer for 1.25< T<20 K. Experimental resolution and reproducibility were enhanced by means of an on-line minicomputer. The heat capacity signatures indicate a 2D triple point at 13.5

G. B. Huff; J. G. Dash

1976-01-01

178

Segmentation of the speech signal based on changes in energy distribution in the spectrum  

NASA Astrophysics Data System (ADS)

A simple algorithm is proposed for automatic phonetic segmentation of the acoustic speech signal on the MERA 303 desk-top minicomputer. The algorithm is verified with Polish linguistic material spoken by two subjects. The proposed algorithm detects approximately 80 percent of the boundaries between enunciated segments correctly, a result no worse than that obtained using more complex methods. Speech recognition programs are discussed as speech perception models, and the nature of categorical perception of human speech sounds is examined.

Jassem, W.; Kudzdela, H.; Domagala, P.

1983-08-01

179

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.

180

Control System of the RIKEN Ring Cyclotron  

Microsoft Academic Search

system is controlled by means of three mini-computers, vhich are linked with one another through an optical fiber loop. A CANAC serial crate network and a GP-16 are used for the control of accelerator devices. Two types of intelligent modules have been developed: one is a CAHAC module and the other is a terminaJ module for high speed local control

T. Wada; J. Fujita; T. Kambara; H. Kamitsubo; K. Shimizu; I. Yokoyama

1985-01-01

181

TMS communications hardware. Volume 2: Bus interface unit  

Microsoft Academic Search

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

J. S. Brown; G. T. Hopkins

1979-01-01

182

Application of On-Line Digital Noise Analysis to Reactor Diagnosis in JMTR  

Microsoft Academic Search

The reactor noise analysis technique is particularly useful in reactor diagnosis for on-line monitoring if the raw noise signals can be processed in almost real time.An on-line reactor noise analysis system has been developed with use made of the mini-computer HITAC-10. This system utilizes functions for calculating the power spectral density in almost real time, plots the output by digital

Masayuki IZUMI; Hiromasa IIDA

1973-01-01

183

SCADA solutions  

SciTech Connect

A gas and electric company has placed a supervisory and control data acquisition (SCADA) system into operation to monitor, alarm and control its 6,000 miles of transmission and 30,000 miles of distribution pipe lines. The SCADA network is comprised of 28 minicomputers located at 13 sites interconnected with a private X.25 packet switching data network, 14 multiple address system (MAS) radio masters and 210 remote terminal units (RTUs). Several of the problems most likely to be experienced by others installing a SCADA network are described in this article.

Stuart, J.W. (PG and E, San Francisco, CA (US))

1990-10-01

184

The Nova control system: Goals, architecture and system design  

NASA Astrophysics Data System (ADS)

The control system for the Nova laser must operate reliably in a harsh pulse power environment and satisfy requirements of technical functionality, flexibility, maintainability and operability. It is composed of four fundamental subsystems: power conditioning, alignment, laser diagnostics, and target diagnostics, together with a unifying subsystem called the central controls. The system architecture utilizes a collection of distributed microcomputers, minicomputers, and components interconnected through high speed fiber optic communications systems. The design objectives development strategy and architecture of the overall control system and each of its four fundamental subsystems are discussed.

Suski, G. J.; Duffy, J. M.; Gritton, D. G.; Holloway, F. W.; Krammen, J. R.; Ozarski, R. G.; Severyn, J. R.; Vanarsdall, P. J.

1982-05-01

185

Development and Implementation of Kumamoto Technopolis Regional Database T-KIND  

NASA Astrophysics Data System (ADS)

T-KIND (Techno-Kumamoto Information Network for Data-Base) is a system for effectively searching information of technology, human resources and industries which are necessary to realize Kumamoto Technopolis. It is composed of coded database, image database and LAN inside technoresearch park which is the center of R & D in the Technopolis. It constructs on-line system by networking general-purposed computers, minicomputers, optical disk file systems and so on, and provides the service through public telephone line. Two databases are now available on enterprise information and human resource information. The former covers about 4,000 enterprises, and the latter does about 2,000 persons.

Onoue, Noriaki

186

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

187

Control system theory of operation  

SciTech Connect

Control of the field of heliostats is accomplished by means of a distributed computer control system consisting of a minicomputer located in the plant control room and a network of data buses and microcomputer-based controllers located at the heliostats. The reflective surface on each heliostat is rotated about azimuth and elevation axes by means of a gear-drive unit and electric motors. The actual azimuth and elevation angles are determined by means of incremental optical encoders and a microcomputer, and the microcomputer provides the logic to turn the drive motors on and off as required.

Not Available

1982-01-01

188

High resolution color raster computer animation of space filling molecular models  

SciTech Connect

The ATOMLLL system efficiently produces realistic photographs of ball-and-stick or space-filling molecular models, with color shading, highlights, shadows, and transparency. The hidden surface problem for a scene composed of intersecting spheres and cylinders is solved on a CDC-7600, which outputs onto magnetic tape the outlines of the visible parts of each object. The outlines are then rendered, at up to 4096 x 4096 resolution, by a Dicomed D-48 color film recorder, controlled by a Varian V-75 minicomputer. The Varian computes the shading and highlights for each pixel in a fast microcoded loop. Recent modifications to give shadows and transparency are described.

Max, N.L.

1981-01-01

189

An object oriented software bus  

SciTech Connect

This paper describes a new approach to development of software for highly integrated software-hardware systems such as used for data acquisition and control. This approach, called the Object Oriented Software Bus (OSB), is a way to develop software according to a common specification similar to the way interface hardware has been developed since the advent of bus structures for minicomputers and microcomputers. Key concept of the OSB is extension of the common use of objects to support user interface and data analysis functions to the development of software objects that directly correspond to real- world hardware interfaces and modules.

McGirt, F. [Los Alamos National Lab., NM (United States); Wilkerson, J.F. [Washington Univ., Seattle, WA (United States). Dept. of Physics

1995-12-31

190

Nova control system: goals, architecture, and system design  

SciTech Connect

The control system for the Nova laser must operate reliably in a harsh pulse power environment and satisfy requirements of technical functionality, flexibility, maintainability and operability. It is composed of four fundamental subsystems: Power Conditioning, Alignment, Laser Diagnostics, and Target Diagnostics, together with a fifth, unifying subsystem called Central Controls. The system architecture utilizes a collection of distributed microcomputers, minicomputers, and components interconnected through high speed fiber optic communications systems. The design objectives, development strategy and architecture of the overall control system and each of its four fundamental subsystems are discussed. Specific hardware and software developments in several areas are also covered.

Suski, G.J.; Duffy, J.M.; Gritton, D.G.; Holloway, F.W.; Krammen, J.R.; Ozarski, R.G.; Severyn, J.R.; Van Arsdall, P.J.

1982-05-19

191

ECG-gated emission computed tomography of the cardiac blood pool  

SciTech Connect

ECG-gated cross-sectional images of the cardiac blood pool were produced using a specially constructed emission computed tomographic scanner. A pair of large-field-of-view cameras were mounted in opposition in a gantry that rotates 360/sup 0/ about the patient. The coordinates of each detected event, the output of a physiological synchronizer, and the position of the camera heads were input to a dedicated minicomputer which was used to produce the images. Display as a movie permitted evaluation of regional and global wall motion in cross section without the disadvantages of superimposed blood pools as obtained in nontomographic views.

Moore, M.L. (Baylor Coll., Houston, TX); Murphy, P.H.; Burdine, J.A.

1980-01-01

192

[Ultrastructural analysis of villous tumors of the large intestine (with the use of a computer)].  

PubMed

As a result of an analysis of the literature and the authors' electron microscopic data on 23 cases of rectal villous tumors, a standardized complex of ultrastructural features and their variants were determined. The said characteristics were used in the development of formal criteria for evaluation of the results of electron microscopic investigation of villous tumors displaying different degrees of dysplasia of the epithelium. A suitable algorithm of automatic data processing was worked out. The program in FORTRAN was read in a D3-28 mini-computer. The use of an automatic system for verification of diagnostically controversial data is suggested. PMID:3544491

Domanin, A A; Shabanov, A M

1987-01-01

193

SCAN: a program library for high resolution slit-scan analysis of chromosomes in flow cytometry.  

PubMed

Computer programs for high resolution slit-scan chromosome analysis in flow cytometry are introduced. A modular program library, SCAN, contains programs for single and dual parameter data acquisition, correction of recorded profiles and computation of histograms of various parameters. Using a minicomputer system, data acquisition is programmed in assembler to realize high input rates and real-time histogram calculation. Software for the processing of recorded profiles has been written in FORTRAN and allows extensions or alterations for different objectives. A sample run recording bicolor fluorescence profiles from metaphase chromosomes demonstrates the main features of the software. PMID:3816174

Weier, H U; Eisert, W G

1986-12-01

194

A convenient and adaptable package of computer programs for DNA and protein sequence management, analysis and homology determination.  

PubMed

We describe the further development of a widely used package of DNA/protein sequence analysis programs (1). Important revisions have been made based on user experience, and new features, multi-user capability, and a set of large scale homology programs have been added. The programs are very user friendly, economical of time and memory, and extremely transportable. They are written in a version of FORTRAN which will compile, with a few defined changes, as FORTRAN 66, FORTRAN 77, FORTRAN IV, FORTRAN IV+, and others. They are running on a variety of microcomputers, minicomputers, and mainframes, in both single user and multi-user configurations. PMID:6320100

Pustell, J; Kafatos, F C

1984-01-11

195

Gamma-resonance system on line with microcomputer  

SciTech Connect

This paper describes a system that consists of a modernized YaGRS-4M spectrometer interfaced with an Elektronika-60 microcomputer, which operates as a terminal for SM-4 and Elektronika-100I minicomputers. It is shown that organization of storage and real-time display of Mossbauer spectra by direct memory access, which completely eliminates losses d of physical data, frees the processor of the microcomputer for solution of problems that put an experiment on-line. The advantages of a multi-level system for automation of gamma-resonance experiments are discussed.

Bil'dyukevich, E.V.; Gurachevskii, V.L; Litvinovich, Y.A.; Mashlan, M.; Misevich, O.V.

1986-05-01

196

Measurement of gas density and temperature profiles in UF/sub 6/ using laser induced fluorescence  

SciTech Connect

Laser induced fluorescence (LIF) can be used to determine the pressure and temperature of an UF/sub 6/ gas sample. An external pulsed laser is used to excite the gas and a multichannel fiber optics system simultaneously collects fluorescence signals emanating from a number of points in the gas. The signals are digitized and presented to a minicomputer for data reduction. Both fluorescence intensity and lifetime are used to deduce temperature and pressure. The LIF probe system is described. Analysis of the data is discussed, and representative results are presented.

Caldwell, S.E.; Gentry, R.A.; White, R.W.; Allison, S.W.

1985-01-01

197

Computers for artificial intelligence a technology assessment and forecast  

SciTech Connect

This study reviews the development and current state-of-the-art in computers for artificial intelligence, including LISP machines, AI workstations, professional and engineering workstations, minicomputers, mainframes, and supercomputers. Major computer systems for AI applications are reviewed. The use of personal computers for expert system development is discussed, and AI software for the IBM PC, Texas Instrument Professional Computer, and Apple MacIntosh is presented. Current research aimed at developing a new computer for artificial intelligence is described, and future technological developments are discussed.

Miller, R.K.

1986-01-01

198

Data acquisition and analysis system for the Sandia 34-meter Vertical Axis Wind Turbine  

SciTech Connect

Sandia National Laboratories has designed and built a 34-meter Vertical Axis Wind Turbine. Acquisition, storage, reduction, display, and analysis of the extensive data from this machine are accomplished with the use of a minicomputer-based data acquisition and analysis system. This paper discusses the development of that system and describes the vendor-supplied computer-system hardware and software, analog-to-digital converter hardware, and the Sandia-developed data acquisition and analysis software that is now operational. Plans for future enhancements of the system are also discussed. 8 refs., 4 figs.

Berg, D.; Rumsey, M.; Gallo, L.; Burwinkle, D.

1987-01-01

199

Computer control and data management in an LSI fabrication facility  

SciTech Connect

A minicomputer system is used to control diffusion furnaces, monitor temperatures, provide operator instructions for each processing step, and record detailed process histories for wafer lots fabricated in the Sandia Semiconductor Development Laboratory. The system provides a complete data base for laboratory operations, a variety of displays describing equipment status, scheduling and utilization summaries for equipment, wafer and mask inventories, and laboratory management information. The wafer lot history includes a record indicating the operator, time, date, and specification recipe for each process step, special notes summarizing process deviations, results of inspection steps, and in-line capacitance, oxide thickness, or resistivity measurements.

Doyal, L. A.; Weaver, D. L.; Gwyn, C. W.

1980-06-01

200

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

201

Data acquisition and command system for use with a microprocessor-based control chassis. [PIGMI-Pion Generation for Medical Irradiations  

SciTech Connect

The Pion Generation for Medical Irradiations (PIGMI) program at the Los Alamos Scientific Laboratory is developing the technology to build smaller, less expensive, and more reliable proton linear accelerators for medical applications, and has designed a powerful, simple, inexpensive, and reliable control and data acquisition system that is central to the program development. The system is a NOVA-3D minicomputer interfaced to several outlying microprocessor-based controllers, which accomplish control and data acquisition through data I/O chasis. The equipment interface chassis, which can issue binary commands, read binary data, issue analog commands, and read timed and untimed analog data is described.

Halbig, J.K.; Klosterbuer, S.F.; Martinez, V.A. Jr.

1980-01-01

202

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

NASA Astrophysics Data System (ADS)

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 micoprocessors. The remote nodes of the Antares control network are based on an LIS-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 LIS-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.

203

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

204

Running EMTP on PCs. [Electromagnetic Transients Program (EMTP)  

SciTech Connect

The Electromagnetic Transients Program (EMTP) is a computer program for the simulation of electric power system transient phenomena. The program provides a large set of device models permitting accurate modeling of power system components over a wide frequency range. Traditionally, this program has existed only in mainframe and minicomputer environments, limiting its use to engineers and companies with access to these facilities. Recently, the EMTP has been made available for use on IBM and compatible personal computers (PCs) using the IBM OS/2 and Microsoft Windows operating systems. This article describes the application of the EMTP.

Gunther, E.; Grebe, T. (Electrotek Concepts, Inc., Knoxville, TN (United States)); Adapa, R. (Electric Power Research Inst., Palo Alto, CA (United States)); Mader, D.

1993-01-01

205

Solving gas processing problems. Part 7. Distillation programs ease calculations  

SciTech Connect

Short cut distillation and tray-by-tray programs make a valuable addition to the minicomputer library for anyone involved in the processing of natural gas and/or natural gas liquids. There are two distillation packages available. The first is the shortcut distillation program which uses minimum trays and minimum reflux calculations to provide estimates of the values of operating reflux and plates required in a multicomponent distillation. The second is a tray-by-tray calculation which provides rigorous heat and material balances in combination with equilibrium calculations to estimate performance of multicomponent distillation columns.

Maddox, R.N.; Erbar, J.H.

1981-06-15

206

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

207

[In Process Citation].  

PubMed

This paper describes a low-cost 6809 microprocessor-based system designed for the acquisition, analysis, preprocessing and recording of electrochemical kinetic data. Determination of second-order rate constants involves a preliminary calculation of a characteristic parameter of the electro-chemical system investigated, the value of which, computed and displayed by our apparatus, allows checking of the correctness of the experimental conditions. At the end of the experiment the data are recorded on a magnetic tape cartridge and can be transferred from the tape to a minicomputer for further mathematical processing. PMID:18963289

Fontaine, J C; Levoir, P; Meyer, J J

1982-11-01

208

Implementation of the Integrated Library System: University of Maryland Health Sciences Library.  

PubMed

The Health Sciences Library, University of Maryland, has implemented the Integrated Library System (ILS), a minicomputer-based library automation system developed by the Lister Hill National Center for Biomedical Communications, National Library of Medicine. The process of moving a library from a manual to a computerized system required comprehensive planning and strong commitment by the staff. Implementation activities included hardware and software modification, conversion of manual files, staff training, and system publicity. ILS implementation resulted in major changes in procedures in the circulation, reference, and cataloging departments. PMID:6688748

Feng, C C; Freiburger, G; Knudsen, P C

1983-07-01

209

Automation of internal library operations in academic health sciences libraries: a state of the art report.  

PubMed Central

A survey of automated records management in the United States and Canada was developed to identify existing on-line library systems and technical expertise. Follow-up interviews were conducted with ten libraries. Tables compare the features and availability of four main frame and four minicomputer systems. Results showed: a trend toward vendor-supplied systems; little coordination of efforts among schools; current system developments generally on a universitywide basis; and the importance of having the cooperation of campus computer facilities to the success of automation efforts.

Grefsheim, S F; Larson, R H; Bader, S A; Matheson, N W

1982-01-01

210

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

211

Tracing technology in the Association of Academic Health Sciences Libraries  

PubMed Central

From the beginning of the association, technology and the Association of Academic Health Sciences Libraries (AAHSL) have been intertwined. Technology was the focus of one of the first committees. Innovative applications of technology have been employed in the operations of the association. Early applications of mini-computers were used in preparing the Annual Statistics. The association's use of network communications was among the first in the country and later applications of the Web have enhanced association services. For its members, technology has transformed libraries. The association's support of the early development of Integrated Advanced Information Management Systems (IAIMS) and of its recent reconceptualization has contributed to the intellectual foundation for this revolution.

Guard, J. Roger; Peay, Wayne J.

2003-01-01

212

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

213

Prescriptive concepts for advanced nuclear materials control and accountability systems  

SciTech Connect

Networking- and distributed-processing hardware and software have the potential of greatly enhancing nuclear materials control and accountability (MC and A) systems, from both safeguards and process operations perspectives, while allowing timely integrated safeguards activities and enhanced computer security at reasonable cost. A hierarchical distributed system is proposed consisting of groups of terminal and instruments in plant production and support areas connected to microprocessors that are connected to either larger microprocessors or minicomputers. These micros and/or minis are connected to a main machine, which might be either a mainframe or a super minicomputer. Data acquisition, preliminary input data validation, and transaction processing occur at the lowest level. Transaction buffering, resource sharing, and selected data processing occur at the intermediate level. The host computer maintains overall control of the data base and provides routine safeguards and security reporting and special safeguards analyses. The research described outlines the distribution of MC and A system requirements in the hierarchical system and distributed processing applied to MC and A. Implications of integrated safeguards and computer security concepts for the distributed system design are discussed. 10 refs., 4 figs.

Whitty, W.J.; Strittmatter, R.B.; Ford, W.; Tisinger, R.M.; Meyer, T.H.

1987-06-01

214

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

215

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

216

Outline of SCM data processing system onboard ETS-5  

NASA Astrophysics Data System (ADS)

An overview of the operation of the Solar Cell Monitor (SCM) is presented. In minicomputer, SCM data are extracted from the telemetry data, data distribution at 17:00 (Japan Standard Time) plus or minus 15 minutes when the SCM entrance surface directly faces to the sun were obtained, SCM data sent in hexadecimal number system were engineeringly converted to analog values, and the results are recorded in each solar cell file. The data processed by mini computer are sent to personal computer through in site telephone circuit, and the data undergo the following three compensations: (1) for solar ray intensity variation due to the elliptic earth revolution orbit; (2) for the seasonal variation of angles between SCM entrance surface and the sun caused by the inclination of the earth's axis; and (3) for seasonal SCM temperature variation.

Matsuda, Sumio; Tamura, Takashi; Uesugi, Masato

1992-08-01

217

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

218

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

219

The role of the biomechanics laboratory in the analysis of the gait of individuals with arthritis.  

PubMed

The function of a biomechanics laboratory is to measure those aspects of an individual patient's performance that cannot be quantitatively assessed in the clinical setting. Essential equipment provides the ability to measure gait events, ground reactive forces, kinematics (movement of the body and its segments in 3 dimensions), electromyographic activity, and oxygen consumption. A minicomputer with video screen is required to process the data and allow visual checks of the functioning of the system. Such things as moments around joints and deforming forces may be calculated from the measured variables. Illustrations are given of a schematic laboratory system, computer generated stick diagrams, real-time changes in forces, moment-arms, moments, and excursions, in addition to the alteration of these variables in tibial nerve paralysis and degenerative arthritis of the knee. PMID:3656306

Lehmann, J F; Price, R; Condon, S M; de Lateur, B J

1987-08-01

220

Digital controller for the Wave Propagation Laboratory's VHF and UHF wind-profiling radars  

NASA Astrophysics Data System (ADS)

Principles are described for operation of a digital system that is used to control the operations of a multiple beam stratospheric-tropospheric (ST) radar system. The digital system, referred to as the radar controller, contains the digital logic for generating the necessary pulse sequences for modulation of the radar transmitter, gating the radar's receiver channels, and sequencing the antenna beams. The radar controller also performs digital-to-analog conversion and coherent averaging of the receiver necessary for signal detection in ST radars. The radar controller is controlled internally by a Z80 microprocessor, and the entire system functions as a peripheral device to a host minicomputer. Block diagrams and detailed circuit schematics for all the custom designed electronics are included.

Moran, K.

1984-09-01

221

Wind turbine data acquisition and analysis system  

SciTech Connect

Under Department of Energy (DOE) sponsorship, Sandia Laboratories has implemented a program to develop vertical-axis wind turbine (VAWT) systems. One aspect of this program has been the development of an instrumented test site adjacent to Sandia Laboratories' Technical Area I on Kirtland Air Force Base. Three VAWTs are now in operation on this test site. This paper describes the data acquisition and analyses system developed to meet the needs of the VAWT test site. The system employs a 16-bit work-length minicomputer as the major element in a stand-alone configuration. A variety of peripheral devices perform the required data acquisition functions and provide for data display and analysis. Included is a disk-based software operating system that supports a mass storage-file system, high-level language, and auxiliary software procedures.

Stiefeld, B.

1978-07-01

222

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

223

Study of restrained amide rotation in. cap alpha. ,. cap alpha. '-substituted. delta. /sup 3/-piperideine and interconversions of substituted 10-sila-2-azaanthracene by the method of analysis of form of NMR lines  

SciTech Connect

To calculate the theoretical spectra in the case of a two-position intramolecular exchange a BASS-01 program has been composed on the BASIC language for a BNC-28X minicomputer, attached to a WP-80 NMR spectrometer. The program makes it possible to calculate the form of the NMR lines for the case of an A in equilibrium B two-position exchange: (1) between forms with different populations (P/sub A/ not equal to P/sub B/) and absence of spin-spin coupling; (2) a symmetrical exchange (p/sub A/ = P/sub B/) in the presence of a spin-spin coupling constant J/sub AB/. In the first case, the classical Gutowsky-Holm line form theory for an intramolecular exchange was used, while in the second case, the quantum-mechanical theory of matrix density was employed.

Aliev, A.E.; Rezakov, V.A.; Fomichev, A.A.

1986-03-01

224

Plant analyzer for high-speed interactive simulation of BWR plant transients  

SciTech Connect

A combination of advanced modeling techniques and modern, special-purpose peripheral minicomputer technology was utilized to develop a plant analyzer which affords realistic predictions of plant transients and severe off-normal events in LWR power plants through on-line simulations at speeds up to 10 times faster than actual process speeds. 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 entire balance of the plant. Reactor core models include point kinetics with reactivity feedback due to void fraction, fuel temperature, coolant temperature, and boron concentration as well as a conduction model for predicting fuel and clad temperatures. Control systems and trip logic for plant protection systems are also simulated. The AD10 of Applied Dynamics International, a special-purpose peripheral processor, is used as the principal hardware of the plant analyzer.

Cheng, H.S.; Lekach, S.V.; Mallen, A.N.; Wulff, W.; Cerbone, R.J.

1984-01-01

225

A computer program for on-line measurement, storage, analysis and retrieval of urodynamic data.  

PubMed

A computer program is presented which allows for direct connection of a minicomputer to a urodynamic set-up. The program stores measured pressure and flow data in a random access disc file with minimal intervention of the urodynamicist, and enables the direct application of a number of methods of analysis to the data. The program is modular, and other analysis methods are easily added. Results of analyses are stored in the same disc file, and both results and measured data can be quickly and easily retrieved. The program is written in FORTRAN; hardware-dependent functions (analog input, graphics display, and random access disc storage) are implemented in subroutines (partly assembler) which can easily be replaced. PMID:6547650

van Mastrigt, R

226

Laboratory procedures used in the hot corrosion project  

SciTech Connect

The objective of the Hot Corrosion Project in the LLNL Metals and Ceramics Division is to study the physical and chemical mechanisms of corrosion of nickel, iron, and some of their alloys when these metals are subjected to oxidizing or sulfidizing environments at temperatures between 850 and 950/sup 0/C. To obtain meaningful data in this study, we must rigidly control many parameters. Parameters are discussed and the methods chosen to control them in this laboratory. Some of the mechanics and manipulative procedures that are specifically related to data access and repeatability are covered. The method of recording and processing the data from each experiment using an LS-11 minicomputer are described. The analytical procedures used to evaluate the specimens after the corrosion tests are enumerated and discussed.

Jeys, T.R.

1980-04-08

227

Telematics and sentinel health information system with general practitioners in Aquitaine, southwest France.  

PubMed

A sentinel health information system using a telematics system to collect epidemiological data from a network of general practitioners (GPs) making up 5% of the GP population was set up in October 1986 in Aquitaine, France. In the first year, four topics were under surveillance. The GPs reported data for each case diagnosed by filling out a questionnaire displayed on their home terminal (Minitel), which transmitted the data by standard telephone lines to a central minicomputer located in the Bordeaux University Medical Centre. Regular feedback was provided to the participating GPs, public health officials and the Bordeaux Medical School. A detailed report of GP participation is presented, the reliability of our findings is discussed in terms of the motivational factors of participants, and the usefulness of the system is evaluated both for immediate teaching implications and for future research possibilities. PMID:2622292

Maurice, S; Salamon, R; Dabis, F

228

Human listeriosis in France in 1987.  

PubMed

The surveillance of human listeriosis is based in France on laboratories' reports. From 1983 to 1986 the trend showed a steady increase of the number of cases reported. The highest annual incidence rate was observed in 1986 with 14.7 cases/million population. In 1987 less cases have been reported; about half of the human strains were typed by the National Reference Centre of Listeriosis showing that 62% were 4b, 22% were 1/2a and 13% were 1/2b. Since 1988, the surveillance of listeriosis is computerized using a system of minicomputer terminals (called Minitel) linked via a national telephone network to a large computer. The 70 microbiologists involved in this surveillance must send, on a 24 h basis, data as a soon as they have a new isolate of Listeria monocytogenes in their laboratories. An investigation (typing of the strains, case-control study) is made for each cluster detected. PMID:2517163

Goulet, V; Espaze, E; Bastide, I; Rebiere, I

1989-01-01

229

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

2011-10-25

230

Implementation of a Prototype Generalized Network Technology for Hospitals *  

PubMed Central

A demonstration implementation of a distributed data processing hospital information system using an intelligent local area communications network (LACN) technology is described. This system is operational at the UCSF Medical Center and integrates four heterogeneous, stand-alone minicomputers. The applications systems are PID/Registration, Outpatient Pharmacy, Clinical Laboratory and Radiology/Medical Records. Functional autonomy of these systems has been maintained, and no operating system changes have been required. The LACN uses a fiber-optic communications medium and provides extensive communications protocol support within the network, based on the ISO/OSI Model. The architecture is reconfigurable and expandable. This paper describes system architectural issues, the applications environment and the local area network.

Tolchin, S. G.; Stewart, R. L.; Kahn, S. A.; Bergan, E. S.; Gafke, G. P.; Simborg, D. W.; Whiting-O'Keefe, Q. E.; Chadwick, M. G.; McCue, G. E.

1981-01-01

231

Computerized data acquisition and analysis for measuring thermal diffusivity  

NASA Astrophysics Data System (ADS)

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.

1985-12-01

232

How we processed Apollo lunar seismic data  

NASA Astrophysics Data System (ADS)

The Apollo lunar seismic station network gathered data continuously at a rate of 3 x 10 to the 8th bits per day for nearly eight years until termination in September, 1977. The data were processed and analyzed using a PDP-15 minicomputer. On average, 1500 long-period seismic events were detected yearly. Automatic event detection and identification schemes proved unsuccessful because of occasional high noise levels and, above all, the risk of overlooking unusual natural events. The processing procedures which were finally chosen consist of plotting all the data on a compressed time scale, visually picking events from the plots, transferring event data to separate sets of tapes and performing detailed analyses using the latter. Many problems remain, especially in the automatic processing of extraterrestrial seismic signals.

Nakamura, Y.; Latham, G. V.; Dorman, H. J.

1980-02-01

233

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

234

Mood-congruent memory in daily life: evidence from interactive ambulatory monitoring.  

PubMed

Evidence from the psychological laboratory indicates that emotional states tend to facilitate the encoding and retrieval of stimuli of the same emotional valence. To explore mood-congruent memory and the role of arousal in daily life, we applied a new interactive ambulatory technique. Psychophysiological arousal as indexed by non-metabolic heart rate, self-reported emotions and situational information were assessed during 24-h recordings in 70 healthy participants. The emotional state was used to trigger word list presentations on a minicomputer. Our results show that psychophysiological arousal at the time of encoding enhanced the recall of negative words in negative emotional conditions, whereas low psychophysiological arousal facilitated recall of positive words. In positive contexts, mood congruency was more prominent when arousal was low. These results demonstrate how automated experimentation with an ambulatory technique may help to assess emotional memory in real-world contexts, thus providing new methods for diverse fields of application. PMID:23523539

Loeffler, Simone N; Myrtek, Michael; Peper, Martin

2013-03-21

235

Controlling electric power demand  

SciTech Connect

Traditionally, demand control has not been viewed as an energy conservation measure, its intent being to reduce the demand peak to lower the electric bill demand charge by deferring the use of a block of power to another demand interval. Any energy savings were essentially incidental and unintentional, resulting from curtailment of loads that could not be assumed at another time. This article considers a microprocessor-based multiplexed system linked to a minicomputer to control electric power demand in a winery. In addition to delivering an annual return on investment of 55 percent in electric bill savings, the system provides a bonus in the form of alarm and monitoring capability for critical processes.

Eikenberry, J.

1984-11-15

236

NEC's traffic terminal equipment for the Intelsat TDMA system  

NASA Astrophysics Data System (ADS)

The components of the traffic terminal equipment (TTE) for the Intelsat TDMA system are discussed. The TTE consists of: (1) common TDMA terminal equipment (CTTE), (2) DSI equipment, and (3) an operation and maintenance center (OMC). The CTTE contains two BASIC CTTE controllers and two QPSK modems; their composition and functions are described. The DSI equipment contains numerous DSI/digital noninterpolation (DNI) units, which use four microprocessors and two types of speech detectors to provide dynamic signal mapping between incoming and outgoing channels and reliable speech detection. A description of the DSI/DNI units, the microprocessors, and speech detectors is presented. The OMC is the man-machine interface for all the TTE. The functions of the OMC, which is composed of a minicomputer system and a status, alarm control (SAC) panel, are explained.

Saburi, A.; Oshima, G.; Saga, R.; Atobe, M.; Shigaki, S.

1985-06-01

237

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

238

Microcomputer speeds mainframe programs  

SciTech Connect

The work environment of the petroleum professional has changed dramatically in the past several years. Since the 1960s, computers have changed the approach to problem solution for technical personnel. The early batch-processing approach to project analysis gave way to the more flexible timesharing approach. The 1970s saw the development of multi-user minicomputers, which offered increased capabilities and reduced costs compared with timesharing. Another alternative emerged with the advent of handheld calculators, which could be programmed to perform multiple operations, and seemed to offer a fair compromise of power and price. However, because of limited computation power and the lack of integration, companies that gave high priority to the resource of time, found programmable handheld calculators inadequate.

Humphries, G.M.

1984-02-13

239

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

240

CAMAPPLE: CAMAC interface to the Apple computer  

SciTech Connect

The advent of the personal microcomputer provides a new tool for the debugging, calibration and monitoring of small scale physics apparatus, e.g., a single detector being developed for a larger physics apparatus. With an appropriate interface these microcomputer systems provide a low cost (1/3 the cost of a comparable minicomputer system), convenient, dedicated, portable system which can be used in a fashion similar to that of portable oscilloscopes. Here, an interface between the Apple computer and CAMAC which is now being used to study the detector for a Cerenkov ring-imaging device is described. The Apple is particularly well-suited to this application because of its ease of use, hi-resolution graphics, peripheral bus and documentation support.

Oxoby, G.J.; Trang, Q.H.; Williams, S.H.

1981-04-01

241

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

242

Techniques for the rapid display and manipulation of 3-D biomedical data.  

PubMed

The use of fully interactive 3-D workstations with true real-time performance will become increasingly common as technology matures and economical commercial systems become available. This paper provides a comprehensive introduction to high speed approaches to the display and manipulation of 3-D medical objects obtained from tomographic data acquisition systems such as CT, MR, and PET. A variety of techniques are outlined including the use of software on conventional minicomputers, hardware assist devices such as array processors and programmable frame buffers, and special purpose computer architecture for dedicated high performance systems. While both algorithms and architectures are addressed, the major theme centers around the utilization of hardware-based approaches including parallel processors for the implementation of true real-time systems. PMID:3383155

Goldwasser, S M; Reynolds, R A; Talton, D A; Walsh, E S

243

Optical system design, analysis, and production; Proceedings of the Meeting, Geneva, Switzerland, April 19-22, 1983  

NASA Astrophysics Data System (ADS)

Topics considered include: optical system requirements, analysis, and system engineering; optical system design using microcomputers and minicomputers; optical design theory and computer programs; optical design methods and computer programs; optical design methods and philosophy; unconventional optical design; diffractive and gradient index optical system design; optical production and system integration; and optical systems engineering. Particular attention is given to: stray light control as an integral part of optical design; current and future directions of lens design software; thin-film technology in the design and production of optical systems; aspherical lenses in optical scanning systems; the application of volume phase holograms to avionic displays; the effect of lens defects on thermal imager performance; and a wide angle zoom for the Space Shuttle.

Rogers, P. J.; Fischer, R. E.

1983-01-01

244

STELLA and SPINE data transmission experiments: Preliminary results and conclusions  

NASA Astrophysics Data System (ADS)

High speed data transmission by satellite, investigated during the STELLA and SPINE OTS experiments, is treated. Differences between the systems concern data processing rather than modems, antennas, etc. In STELLA, retransmission requires backspacing while SPINE uses disk buffers. In SPINE the link driving minicomputer cannot handle transmit and receive simultaneously, so burst cycle time depends on satellite link delay, whereas STELLA is duplexed, with an external timer. Problems with STELLA arise from bit patterns containing long strings of zeros. These interfere with synchronization of a burst modem for regular and frequent zero-one transitions. Also, high error rates when signal and noise levels are normal remain unexplained. For SPINE, buffer sizing is a problem, but otherwise it performs well.

Bartholome, P.; Hine, M. G. N.; Scalan, J. O.

1981-08-01

245

Plant analyzer development for high-speed interactive simulation of BWR plant transients  

SciTech Connect

Advanced modeling techniques have been combined with modern, special-purpose peripheral minicomputer technology to develop a plant analyzer which provides realistic and accurate predictions of plant transients and severe off-normal events in nuclear power plants through on-line simulations at speeds of approximately 10 times faster than actual process speeds. The new simulation technology serves not only for carrying out routinely and efficiently safety analyses, optimizations of emergency procedures and design changes, parametric studies for obtaining safety margins and for generic training but also for assisting plant operations. Five modeling principles are presented which serve to achieve high-speed simulation of neutron kinetics, thermal conduction, nonhomogeneous and nonequilibrium two-phase flow coolant dynamics, steam line acoustical effects, and the dynamics of the balance of plant and containment systems, control systems and plant protection systems. 21 refs.

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

1986-01-01

246

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

247

Personal computer applications in DIII-D neutral beam operation  

SciTech Connect

An IBM PC AT has been implemented to improve operation of the DIII-D neutral beams. The PC system provides centralization of all beam data with reasonable access for on-line shot-to-shot control and analysis. The PC hardware was configured to interface all four neutral beam host minicomputers, support multitasking, and provide storage for approximately one month's accumulation of beam data. The PC software is composed of commercial packages used for performance and statistical analysis (i.e., LOTUS 123, PC PLOT, etc.), host communications software (i.e., PCLink, KERMIT, etc.), and applications developed software utilizing f-smcapso-smcapsr-smcapst-smcapsr-smcapsa-smcapsn-smcaps and b-smcapsa-smcapss-smcapsIc-smcaps. The objectives of this paper are to describe the implementation of the PC system, the methods of integrating the various software packages, and the scenario for on-line control and analysis.

Glad, A.S.

1986-08-01

248

Numerical methods: Analytical benchmarking in transport theory  

SciTech Connect

Numerical methods applied to reactor technology have reached a high degree of maturity. Certainly one- and two-dimensional neutron transport calculations have become routine, with several programs available on personal computer and the most widely used programs adapted to workstation and minicomputer computational environments. With the introduction of massive parallelism and as experience with multitasking increases, even more improvement in the development of transport algorithms can be expected. Benchmarking an algorithm is usually not a very pleasant experience for the code developer. Proper algorithmic verification by benchmarking involves the following considerations: (1) conservation of particles, (2) confirmation of intuitive physical behavior, and (3) reproduction of analytical benchmark results. By using today's computational advantages, new basic numerical methods have been developed that allow a wider class of benchmark problems to be considered.

Ganapol, B.D. (Univ. of Arizona, Tucson (USA))

1988-01-01

249

KEK NODAL system  

SciTech Connect

The KEK NODAL system, which is based on the NODAL devised at the CERN SPS, works on an optical-fiber token ring network of twenty-four minicomputers (Hitachi HIDIC 80's) to control the TRISTAN accelerator complex, now being constructed at KEK. KEK NODAL retains main features of the original NODAL: the interpreting scheme, the multi-computer programming facility, and the data-module concept. In addition, it has the following characteristics: fast execution due to the compiler-interpreter method, a multicomputer file system, a full-screen editing facility, and a dynamic linkage scheme of data modules and NODAL functions. The structure of the KEK NODAL system under PMS, a real-time multitasking operating system of HIDIC 80, is described; the NODAL file system is also explained.

Kurokawa, S.; Abe, K.; Akiyama, A.; Katoh, T.; Kikutani, E.; Koiso, H.; Kurihara, N.; Oide, K.; Shinomoto, M.

1985-10-01

250

Damage-zones of containment structures under aircraft impact loads  

NASA Astrophysics Data System (ADS)

Containment structures subjected to aircraft impact loads need a non-linear transient analysis involving thousands of time steps to study the impact response. For any such large transient dynamic analysis, efficient numerical techniques, involving FEM-idealization would enable such analysis to be carried out in a minicomputer environment within reasonable time. This paper gives an application of a simple three-noded shell element to idealize a containment structure and to predict the growth of damage in terms of concrete cracking, concrete crushing and steel yielding, using nonlinear transient analysis techniques. The study attempts to use a simple irrecoverable damage model based on a stress criteria for obtaining post-impact response of the containment shell.

Gomathinayagam, S.; Dharaneepathy, M. V.; Keshava Rao, M. N.

1994-08-01

251

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

SciTech Connect

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 touch-sensitive overlay, mounted directly over the face of the colour screen, eliminating the need for a keyboard. Switch labels and colours are changed on the screen by the terminal software as different functions are selected. Interaction is self-prompting and can be learned quickly. System operation for a complete set of 20 tests has demonstrated the convenience of interactive touchsensitive colour graphics.

Snedden, M.D.; Mead, G.L.

1982-02-01

252

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

253

Costing clinical biochemistry services as part of an operational management budgeting system.  

PubMed Central

The process of costing clinical biochemistry tests as a component of the commissioning of a unit management budgeting system based on an International Computers Limited (ICL) minicomputer system was examined. Methods of apportioning consumable and labour costs under direct and indirect cost headings and as test and request charges were investigated, and in this currently operational system it was found that 38% of consumable costs and 57% of labour costs were not a direct component of the routine analysis function. Means of assigning test costs to a given request source and the incorporation of such charges into clinical budget statements were looked at. A reduction in laboratory workload did not produce a comparable reduction in laboratory costs. For a theoretical reduction in workload of 20% only a 3.8% laboratory saving in recoverable costs could be expected.

Tarbit, I F

1986-01-01

254

The Israeli National Medical Library's new minicomputerized on-line integrated system (MAIMON).  

PubMed

An in-house library system based on a dedicated mini-computer has been in operation in the Israel National Medical Library since the summer of 1979. The integrated system, called MAIMON, features on-line access to bibliographic and circulation records. It replaces manual procedures in cataloging, searching, lending, and reservations. The system provides previously unavailable statistics on items in heavy use and demand, items to be removed from the active collection, and who uses what in the library. It is designed to be user cordial and to save users' time. The system has been very favorably accepted by patrons, and frees professional librarians from time-consuming clerical routine tasks. The system is evaluated in terms of performance, convenience, and cost. PMID:6784799

Avriel, D; Miller, R; Fuchs, C

1981-04-01

255

Modernizing Text and Data Networks in the Early 1980s  

NASA Astrophysics Data System (ADS)

During the decades before the beginning of 1980s, there were just a few ways to transmit messages in electrical format. As personal computers were not available on everyone’s desk and minicomputers were not meant for everyday working tasks, document creation was mostly manual. In early 1980s, people started to realize for the first time that the society around them had changed due to the increasing amount of computers and communication facilities. In this paper, some views have been presented from the perspective of young engineers at that time concerning the fast change in text and data networking that took place in the 1980s. The value of the paper is mostly in writing down these views and memories with some source reference material.

Väänänen, Ossi; Mertanen, Olli

256

Horizon and Prime Communication Programs HCP and PCP  

NASA Astrophysics Data System (ADS)

Programs used to transfer text files between the mini-floppy diskettes on a North Star Horizon microcomputer executing the operating system CP/M-80, and a disk device on a Prime 550 minicomputer executing the operating system Primos rev 18.3 are described. The instructions to these programs defining the file transfers to be carried out are entered on the VDU of the Horizon by the operator via an option menu. Options exist to transfer files in both directions and to allow access to the Prime computer via the VDU on the Horizon. When an attempt is made to create a file which already exists the operator is asked to confirm or change the action.

Whitmarsh, K.

1984-01-01

257

Assessment of the Accuracy and Computing Speed of Simplified Saturation Vapor Equations Using a New Reference Dataset.  

NASA Astrophysics Data System (ADS)

A revised saturation vapor dataset is proposed for use in meteorology. Based on new engineering data of the American Society of Heating, Refrigerating, and Air-Conditioning Engineers for temperatures above 0°C, it should supersede the older Smithsonian and World Meteorological Organization meteorological tables.Simple new equations are proposed to compute the saturation vapor pressure over water between 50° and 50°C. Their accuracy is shown to be excellent over this range, with an nns error of 3 × 103 mb and an average relative error of 0.02%. Detailed statistics descrbing the accuracy performance of 22 other equations are presented and the speed performance of all these equations is assessed. Nested polynomials are shown to provide both good accuracy and computational speed. On a modern minicomputer, a single evaluation of saturation vapor pressure may take less than 1 µs of CPU time, 15 times less than required by the Goff Gratch equations that were used to construct the meteorological tables.

Gueymard, Christian

1993-07-01

258

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

259

Lithology and aggregate quality attributes for the digital geologic map of Colorado  

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.

Knepper, D. H.; Green, G. N.; Langer, W. H.

1999-01-01

260

Signal processing II: Theories and applications; Proceedings of the Second European Signal Processing Conference, Universitaet Erlangen-Nuernberg, Erlangen, West Germany, September 12-16, 1983  

NASA Astrophysics Data System (ADS)

Studies and developments related to signal processing are discussed, taking into account the pointwise convergence of sampling series, linear operators and discrete transforms, white noises, the statistical properties of rice fading processes, the application of relay- and polarity-correlation to the analysis of speech signals, the generalized synthesis of recursive digital filters in the frequency domain by linear programming, the stability of certain time-varying digital filters, and a syntactic approach to image analysis. Other topics considered are concerned with speech and sound processing, detection and estimation, software, and hardware. Attention is given to objectives and approaches in biomedical signal processing, new perspectives to noise reduction in evoked potential processing, a minicomputer assisted audiometry system, signal processing in computing tomography, and geophysical signal analysis. No individual items are abstracted in this volume

Schuessler, H. W.

261

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

262

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

263

Collection and evaluation of salt mixing data with the real time data acquisition system. [LMFBR  

SciTech Connect

A minicomputer based real time data acquisition system was designed and built to facilitate data collection during salt mixing tests in mock ups of LMFBR rod bundles. The system represents an expansion of data collection capabilities over previous equipment. It performs steady state and transient monitoring and recording of up to 512 individual electrical resistance probes. Extensive real time software was written to govern all phases of the data collection procedure, including probe definition, probe calibration, salt mixing test data acquisition and storage, and data editing. Offline software was also written to permit data examination and reduction to dimensionless salt concentration maps. Finally, the computer program SUPERENERGY was modified to permit rapid extraction of parameters from dimensionless salt concentration maps. The document describes the computer system, and includes circuit diagrams of all custom built components. It also includes descriptions and listings of all software written, as well as extensive user instructions.

Glazer, S.; Chiu, C.; Todreas, N.E.

1977-09-01

264

MAGNET magnavox network adjustment post processing software  

NASA Astrophysics Data System (ADS)

MAGNET, developed to reduce data from the TRANSIT satellite system, is a program designed to analyze data from up to ten MX1502 Satellite Surveyor receivers which have acquired data simultaneously. A weighted least squares analysis is performed on all of the available satellite and Doppler data to produce an adjusted network which is the best fit to the acquired data. The program is designed for ease of use by surveyors to obtain a network of positions from Doppler data while allowing flexibility for scientific studies. Designed and written in a subset of FORTRAN IV, MAGNET is very portable and may reside both on minicomputers and large mainframes to produce results with the same accuracy.

Ross, W. T.

265

Landsat electron beam recorder  

NASA Astrophysics Data System (ADS)

A minicomputer-controlled electron beam recorder (EBR) presently in use at the Brazilian Government's Institute De Pesquisas Espaclais (INPE) satellite ground station is described. This 5-in.-film-size EBR is used to record both Landsat and SPOT satellite imagery in South America. A brief electron beam recorder technology review is presented. The EBR is capable of recording both vector and text data from computer-aided design, publishing, and line art systems and raster data from image scanners, raster image processors (RIPS), halftone/screen generators, and remote image sensors. A variety of image formats may be recorded on numerous film sizes (16 mm, 35 mm, 70 mm, 105 mm, 5-in, 5.5-in., and 9.5-in.). These recordings are used directly or optically enlarged depending on the final product.

Grosso, P. F.; Whitley, J. P.

266

Introduction to digital logic systems for energy monitoring and control systems  

NASA Astrophysics Data System (ADS)

Recent advances in the state-of-the-art of digital electronic technology have made feasible the concept of distributed data processing in energy monitoring and control systems (EMCS). These advances were brought about largely due to the advent of micro-miniaturization of electronic integrated circuit components and the development of the microprocessor, a discrete semiconductor device with many of the capabilities of the central processing unit of the familiar mainframes of minicomputers, but vastly reduced in size and cost. It is now possible to design a reliable EMCS consisting of a central computer control system and remote microcomputers which can perform many functions independent of the central system. When properly applied, these EMCS installations can aid significantly in conserving our dwindling sources of energy.

1985-05-01

267

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

268

SPUNIT, a computer code for multisphere unfolding  

SciTech Connect

A new computer code has been written to analyze multisphere (Bonner Sphere) measurements for the determination of neutron flux, energy distribution, dose rate, dose equivalent rate and quality factor. The code was designed to analyze the seven detector/moderator configurations used at PNL, using the Sanna response functions. The neutron energies for this code range from thermal to 20.4 MeV, grouped in 26 bins. SPUNIT was written with an internal structure similar to the NRL code, YOGI, but the basic unfolding algorithm is based on a iterative technique using information theory. The code has been implemented in two versions: a FORTRAN version that runs on a DEC PDP-11/24 minicomputer, and a BASIC version that runs on a Hewlett-Packard HP-87 personal computer. This paper presents the mathematical model used in SPUNIT, and results from typical SPUNIT calculations will also be presented.

Brackenbush, L.W.; Scherpelz, R.I.

1983-12-01

269

Use of PCs and workstations for criticality safety analysis  

SciTech Connect

Making effective use of the best available computer technology has long been a feature of U.K. criticality safety analyses. In recent years, the industry's drive for improvements in design safety assessment practice has been supplemented by increasing commercial awareness, bringing further emphasis to the consideration of cost-effectiveness in criticality computation. Consequently, there has been an evolution of computing facilities seen by U.K. criticality assessors from the mainframe terminals of the 1970s through minicomputers in the 1980s to graphical workstations and, most recently, personal computers (PCs) in the 1990s. These moves have been initiated by the availability of hardware capable of providing adequate performance and facilitated by cooperation and subsequently formal collaboration between British Nuclear Fuels Limited (BNFL) and the Atomic Energy Authority (AEA) in the field of software development.

Watmough, M.H.; Evans, A.M. (British Nuclear Fuels Ltd., Cheshire (United Kingdom)); Smith, N.R. (AEA Technology, Dorchester (United Kingdom))

1993-01-01

270

Implementation of the DYMAC system at the new Los Alamos Plutonium Processing Facility. Phase II report  

SciTech Connect

The DYnamic Materials ACcountability System - called DYMAC - performs accountability functions at the new Los Alamos Plutonium Processing Facility where it began operation when the facility opened in January 1978. A demonstration program, DYMAC was designed to collect and assess inventory information for safeguards purposes. It accomplishes 75% of its design goals. DYMAC collects information about the physical inventory through deployment of nondestructive assay instrumentation and video terminals throughout the facility. The information resides in a minicomputer where it can be immediately sorted and displayed on the video terminals or produced in printed form. Although the capability now exists to assess the collected data, this portion of the program is not yet implemented. DYMAC in its present form is an excellent tool for process and quality control. The facility operator relies on it exclusively for keeping track of the inventory and for complying with accountability requirements of the US Department of Energy.

Malanify, J.J.; Amsden, D.C.

1982-08-01

271

Terrain analysis database generation through computer-assisted photo interpretation  

NASA Astrophysics Data System (ADS)

The creation of digital terrain analysis databases through on-line photo interpretation has been the focus of computer-assisted photo interpretation research (CAPIR) at USAETL. An APPS IV analytical plotter equipped with stereo superposition linked to a minicomputer is used for photo interpretation and digitizing. Digital data is input in arc/node format with attributes and the points are stored in three dimensions; latitude, longitude, and elevation. To demonstrate these capabilities, high-altitude infrared photography of the Fort Belvoir, Virginia, area was used for photo interpretation and digitization, supplemented by large-scale photography and field data. Landforms, surface drainage, soils, and vegetation were individually interpreted and digitized. Digital elevations, measured from stereo imagery, were used to produce contour and slope overlays. The resultant digital database was readily accessed and used as a basis for analysis and modeling. This paper briefly describes the hardware, software and methods used to generate a digital terrain analysis database.

Edwards, D. L.

1983-04-01

272

Acoustic monitoring of power-plant valves  

NASA Astrophysics Data System (ADS)

Advanced surveillance diagnostics were applied to key nuclear power plant valves to improve the availability of the power plant. Two types of valves were monitored: BWR three-stage, pilot-operated safety/relief valves and PWR feedwater control valves. Excessive leakage across the pilot-disc seat in BWR safety/relief valves can cause the second-stage pressure to reach the critical value that activates the valve, even though the set pressure was not exceeded. Acoustic emissions created by the leak noise were monitored and calibrated to indicate incipient activation of the safety/relief valve. Hydrodynamic, vibration, control and process signals from PWR feedwater control valves were monitored by a mini-computer based surveillance system. On-line analysis of these signals coupled with earlier analytic modelling identified: (1) cavitation, (2) changes in steam packaging tightness, (3) valve stem torquing, (4) transducer oscillations, and (5) peak vibration levels during power transients.

Allen, J. W.; Hartman, W. F.; Robinson, J. C.

1982-06-01

273

A distributed microprocessing system for laboratory computing.  

PubMed

The concepts and practical implementation of a distributed processing system used for biomedical research demonstrably increase efficiency and cost effectiveness of microprocessor use. The hardware system is based on a minicomputer host and remote microcomputer slaves. Remote microcomputer systems are used for data acquisition and display, whereas the host system is used for data and program storage, as well as program compilation. The software used is the "C" programming language and the Unix operating system. Methods for programming the microcomputer in the higher level language "C" for laboratory usage are described. Examples illustrate how a distributed microprocessor system can be effectively used in a medical laboratory for the common tasks of data acquisition, processing, and display. PMID:7231225

Bourne, J R

274

Interfacing a torsion pendulum with a microcomputer  

SciTech Connect

Shear modulus testing is performed on the torsion pendulum at the General Electric Neutron Devices Department (GEND) as a means of gauging the state of cure for a polymer system. However, collection and reduction of the data to obtain the elastic modulus necessitated extensive operator involved measurements and calculations, which were subject to errors. To improve the reliability of the test, an analog-to-digital interface was designed and built to connect the torsion pendulum with a minicomputer. After the necessary programming was prepared, the system was tested and found to be an improvement over the old procedure in both quality and time of operation. An analysis of the data indicated that the computer generated modulus data were equivalent to the hand method data, but potential operator errors in frequency measurements and calculations were eliminated. The interfacing of the pendulum with the computer resulted in an overall time savings of 52 percent.

Bush, J.A.; Newby, J.W.

1983-02-24

275

The TYCHO system for computer analysis of two-dimensional gel electrophoresis patterns  

SciTech Connect

We describe here a computer system for the analysis of high-resolution two-dimensional gel-electrophoresis patterns, with some initial applications. The system (called TYCHO) comprises programs for image acquisition, background subtraction and smoothing, spot detection, gaussian spot modeling, and pattern matching and comparison. It is based on a conventional minicomputer, but makes extensive use of a high-speed array processor in the image-processing and -modeling steps. Used in concert with the ISO-DALT two-dimensional electrophoresis system (Anal. Biochem. 85:331-354, 1978), TYCHO allows quantitative measurement of hundreds of proteins in complex biological samples, and constitutes the initial data-reduction system required for work towards a Human Protein Index.

Anderson, N.L.; Taylor, J.; Scandora, A.E.; Coulter, B.P.; Anderson, N.G.

1981-11-01

276

The TYCHO system for computer analysis of two-dimensional gel electrophoresis patterns.  

PubMed

We describe here a computer system for the analysis of high-resolution two-dimensional gel-electrophoresis patterns, with some initial applications. The system (called TYCHO) comprises programs for image acquisition, background subtraction and smoothing, spot detection, gaussian spot modeling, and pattern matching and comparison. It is based on a conventional minicomputer, but makes extensive use of a high-speed array processor in the image-processing and -modeling steps. Used in concert with the ISO-DALT two-dimensional electrophoresis system (Anal. Biochem. 85:331-354, 1978), TYCHO allows quantitative measurement of hundreds of proteins in complex biological samples, and constitutes the initial data-reduction system required for work towards a Human Protein Index. PMID:7296832

Anderson, N L; Taylor, J; Scandora, A E; Coulter, B P; Anderson, N G

1981-11-01

277

Automated search for supernova explosions  

SciTech Connect

We describe the design and construction of a new search for supernovae, based on the use of current computer and detector technology. This search uses a computer-controlled telescope and charge coupled device (CCD) detector to collect images of hundreds of galaxies per night of observation, and a dedicated minicomputer to process these images in real time. The search system has a detection threshold of 17th visual magnitude, discovered its first supernova on 18 May 1986, and at this writing has found three additional supernovae. The system currently is being upgraded with an improved detector and a more powerful computer. At full speed and sensitivity, the system will be able to search 2500 galaxies per night with a limiting magnitude of 19 or fainter.

Kare, J.T.; Burns, M.S.; Crawford, F.S.; Friedman, P.G.; Muller, R.A.; Pennypacker, C.R.; Perlmutter, S.; Treffers, R.; Williams, R.

1988-07-01

278

Computer software evaluation methodology and data base management system selection  

SciTech Connect

This document presents a Data Base Management System (DBMS) evaluation methodology that has been developed under the sponsorship of the Department of the Navy, Naval Management Systems Support Office (NAVMASSO), Norfolk, Virginia. NAVMASSO has recognized the need for a DBMS to support the Shipboard Nontactical Automated Data Processing Program (SNAP) and has tasked Oak Ridge National Laboratory (ORNL) with evaluating DBMSs that are available for the SNAP-I computer system - a Honeywell DPS-6 minicomputer - and the SNAP-II computer system - a Harris 300 minicomputer. In preparation for the SNAP-I/SNAP-II DBMS evaluation, ORNL has developed the DBMS evaluation methodology presented in this document. First, a discussion of the traditional computer software evaluation methodology is provided, with identification of aspects of the methodology that may cause the resulting evaluation to be deficient. A DBMS evaluation methodology that stresses the layered functionality of the software is then presented. The methodology requires a large amount of hands-on testing and allows evaluation team members to evaluate the software from the perspective of application developers and end-users who will use the system on a day-to-day basis. The document contains a discussion of several general considerations that must be evaluated. These are items that form a supportive environment and enhance the usability of the software, even though they may not affect the intrinsic functionality of the software. The technical facilities that define the limits of functionality of the software are then presented for evaluation. Areas where these facilities may not meet the desired functionality are identified. 14 refs.

Huntley, A.F.

1986-04-01

279

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

280

Development of 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. 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 and a communication software package. Hardware configuration has been established, a communication software program that reads the pages from the shared memory has been developed. In this paper, we present the implementation strategy, works completed, existing and new page format, future action plans, explanation of pages and use of related global variables, a sample session, and flowcharts.

Hasanul Basher, A.M.

1991-09-01

281

ORNL 25 MV tandem accelerator control system  

SciTech Connect

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. Nearly seven years of control system operation and improvements will be discussed.

Juras, R.C.; Biggerstaff, J.A.; Hoglund, D.E.

1985-01-01

282

NRC plant-analyzer development at BNL. [BWR  

SciTech Connect

The objective of this program is to develop an LWR engineering plant analyzer capable of performing realistic and accurate simulations of plant transients and Small-Break Loss of Coolant Accidents at real-time and faster than real-time computing speeds and at low costs for preparing, executing and evaluating such simulations. The program is directed toward facilitating reactor safety analyses, on-line plant monitoring, on-line accident diagnosis and mitigation and toward improving reactor operator training. The AD10 of Applied Dynamics International, Ann Arbor, MI, a special-purpose peripheral processor for high-speed systems simulation, is programmed through a PDP-11/34 minicomputer and carries out digital simulations with analog hardware in the input/output loop (up to 256 channels). Analog signals from a control panel are being used now to activate or to disable valves and to trip pump drive motors or regulators without interrupting the simulation. An IBM personal computer with multicolor graphics capabilities and a CRT monitor are used to produce on-line labelled diagrams of selected plant parameters as functions of time.

Wulff, W.

1983-01-01

283

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

284

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

285

System description document: collector subsystem for the 10 MWe solar thermal central receiver pilot plant. Phase II  

SciTech Connect

Each heliostat consists of: (1) the mirror assembly; (2) the mirror support or rack assembly; (3) the drive mechanism; (4) the main support pedestal; (5) the pedestal foundation; and (6) associated instrumentation, controls, and signal cabling; see Figure M2-2. The components are designed to be transported by highway and railroad carriers using standard transport vehicles and materials handling equipment and within applicable federal and state regulations. The heliostats are designed for a 30-year life. Control of the field of heliostats is accomplished by means of a distributed computer control system consisting of a minicomputer located in the plant control room and a network of data buses and microcomputer-based controllers located at the heliostats. The reflective surface on each heliostat is rotated about azimuth and elevation axes by means of a gear-drive unit and electric motors. The actual azimuth and elevation angles are determined by means of incremental optical encoders and a microcomputer, and the microcomputer provides the logic to turn the drive motors on and off as required. The Heliostat Array Controller (HAC) computer system consists of a set of identical, dual-redundant MODCOMP CLASSIC computers, with a set of peripheral and input/output equipment needed to satisfy the HAC computer system requirements.

Not Available

1980-08-01

286

Commercial space development needs cheap launchers  

NASA Astrophysics Data System (ADS)

SpaceDev is in the market for a deep space launch, and we are not going to pay $50 million for it. There is an ongoing debate about the elasticity of demand related to launch costs. On the one hand there are the ``big iron'' NASA and DoD contractors who say that there is no market for small or inexpensive launchers, that lowering launch costs will not result in significantly more launches, and that the current uncompetitive pricing scheme is appropriate. On the other hand are commercial companies which compete in the real world, and who say that there would be innumerable new launches if prices were to drop dramatically. I participated directly in the microcomputer revolution, and saw first hand what happened to the big iron computer companies who failed to see or heed the handwriting on the wall. We are at the same stage in the space access revolution that personal computers were in the late '70s and early '80s. The global economy is about to be changed in ways that are just as unpredictable as those changes wrought after the introduction of the personal computer. Companies which fail to innovate and keep producing only big iron will suffer the same fate as IBM and all the now-extinct mainframe and minicomputer companies. A few will remain, but with a small share of the market, never again to be in a position to dominate.

Benson, James William

1998-01-01

287

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

288

Data acquisition and control of a Raman spectrometer using a DEC PDP 11/34 computer  

SciTech Connect

The Raman spectrometer system, located at Building K-1004L, which is operated by the members of the Process Chemistry section of the Materials and Chemistry Technology Department, has recently been extensively overhauled and upgraded. A significant portion of the efforts involved in the upgrading was in the conversion to a DEC PDP 11/34 mini-computer. The necessary changes and improvements made to the laser, the optical path, the monochromator and the signal collection unit are described. The primary objective of this report is to describe the actual interfacing of the spectrometer and its interface unit to the DEC computer. In addition, the seven operating routines which were adapted for or written especially for this system are described and examples of the system's performance and flexibility are included. The resulting spectrometer system has a markedly improved performance and reliability and allows the Process Chemistry section to readily examine virtually any class of samples which may be analyzed at room temperature with argon ion laser emission lines.

Armstrong, D.P.; Fletcher, W.H.; Trimble, D.S.

1987-06-01

289

Pressure Measurement Systems  

NASA Astrophysics Data System (ADS)

System 8400 is an advanced system for measurement of gas and liquid pressure, along with a variety of other parameters, including voltage, frequency and digital inputs. System 8400 offers exceptionally high speed data acquisition through parallel processing, and its modular design allows expansion from a relatively inexpensive entry level system by the addition of modular Input Units that can be installed or removed in minutes. Douglas Juanarena was on the team of engineers that developed a new technology known as ESP (electronically scanned pressure). The Langley ESP measurement system was based on miniature integrated circuit pressure-sensing transducers that communicated pressure information to a minicomputer. In 1977, Juanarena formed PSI to exploit the NASA technology. In 1978 he left Langley, obtained a NASA license for the technology, introduced the first commercial product, the 780B pressure measurement system. PSI developed a pressure scanner for automation of industrial processes. Now in its second design generation, the DPT-6400 is capable of making 2,000 measurements a second and has 64 channels by addition of slave units. New system 8400 represents PSI's bid to further exploit the 600 million U.S. industrial pressure measurement market. It is geared to provide a turnkey solution to physical measurement.

1990-01-01

290

Automation of Precise Time Reference Stations (PTRS)  

NASA Astrophysics Data System (ADS)

The U.S. Naval Observatory is presently engaged in a program of automating precise time stations (PTS) and precise time reference stations (PTBS) by using a versatile mini-computer controlled data acquisition system (DAS). The data acquisition system is configured to monitor locally available PTTI signals such as LORAN-C, OMEGA, and/or the Global Positioning System. In addition, the DAS performs local standard intercomparison. Computer telephone communications provide automatic data transfer to the Naval Observatory. Subsequently, after analysis of the data, results and information can be sent back to the precise time reference station to provide automatic control of remote station timing. The DAS configuration is designed around state of the art standard industrial high reliability modules. The system integration and software are standardized but allow considerable flexibility to satisfy special local requirements such as stability measurements, performance evaluation and printing of messages and certificates. The DAS operates completely independently and may be queried or controlled at any time with a computer or terminal device (control is protected for use by authorized personnel only). Such DAS equipped PTS are operational in Hawaii, California, Texas and Florida.

Wheeler, P. J.

1985-04-01

291

A numerical and theoretical study of seismic wave diffraction in complex geologic structure  

NASA Astrophysics Data System (ADS)

This report presents results of a theoretical study on wave propagation and diffraction effects in irregular geologic media. The first objective of the study is to demonstrate and validate some large-scale finite element methods for analyzing linear and nonlinear seismic effects in the surficial geologies relevant to several Air Force missions. The second objective is to solve the hitherto intractable problem of vector edge diffraction, which strongly influences seismic wave interactions at the geologic discontinuities ubiquitous in near-surface structure. The first paper describes a variety of linear and nonlinear, finite element seismic simulations at small- and large-scale, and their performance on minicomputers and supercomputers, particularly the Cray-2. The second paper develops a rigorous theory of vector wave diffraction for the canonical planar wedge problem. The third paper presents a numerical evaluation and verification of the two-dimensional diffraction theory for various types of incident plane-wave polarization. The diffraction solutions described here are used to verify discrete numerical solutions in the neighborhood of sharp edges. Validation is required because basis functions for the discrete solvers do not support the field singularities that actually occur at an edge. In fact, the exact solution evaluated here indicates that edge-diffracted seismic wave fields calculated by discrete numerical methods probably exhibits significant errors.

Wojcik, Gregory L.

1989-04-01

292

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

293

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

294

Digital image processing of electron micrographs: the PIC system-III.  

PubMed

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. The latest version, PIC-III, runs on Alpha workstations and represents a substantial upgrading in functionality compared with PIC-II, the VAX version previously described (B.L. Trus et al. (1992), Scanning Microsc. Suppl. 6, 441-451). PIC now possesses an X-windows menu-driven graphical user interface that many be utilized from both local or remote X-window terminals or workstations. Other new features include dynamic memory allocation; an open systems approach to interfacing with other image processing software packages; interface options with visualization software; and programs to reconstruct three-dimensional density maps of both helical filaments and free-standing particles with and without symmetry. PMID:8742724

Trus, B L; Kocsis, E; Conway, J F; Steven, A C

295

Coaxial jets with and without swirl  

NASA Astrophysics Data System (ADS)

Measured values of mean velocity, Reynolds stresses and probability density distributions of fluctuating velocity are reported for the turbulent coaxial jets, with and without swirl, emerging into stagnant surroundings from a long pipe and an annulus concentric with the pipe. They were obtained using hot-wire anemometry and on-line data processing with the aid of a mini-computer. The results show that non-swirling coaxial flow configurations approach a self-similar state in a much smaller distance than that of the round jet, for velocity ratios ranging between 0.65 to 1.5; this is due to the mixing layer and vortex shedding that occur in the region downstream of the separation wall between the two streams. In the presence of swirl, the coaxial jet was found to develop at a faster rate. An assessment of turbulence models, based on Reynolds stress closures, suggests that previous assumptions for turbulent diffusion of turbulent kinetic energy are in error.

Ribeiro, M. M.; Whitelaw, J. H.

1980-02-01

296

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

297

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

298

Computer interfaced, multiple radioisotope counting and scanning system  

SciTech Connect

This research has outlined the design and development of a computer interfaced, multiple radioisotope counting and scanning system. The basic components of the system were a Digital Equipment Corporation PDP-11/34A minicomputer and two Ohio-Nuclear rectilinear scanners. The two scanners (5'' and 8'' dual detector models) were combined into one unit and interfaced to the PDP-11/34A. An IEEE-488-1978 high speed digital interface was used to collect data in four ..gamma.. ray energy windows while scanner head motion was simultaneously monitored via Schmitt trigger input into the computer's real time clock module. Software was written to control scan acquisition and to process, analyze and display the stored scan data. A variety of methods for data processing and analysis taken from the work of previous researchers were incorporated into the system and new methods were developed as required. Several options for display of scan data were emplyed including: numeric and symbolic scan printout; photorecording; and three-dimensional and contour plotting of data. Studies were carried out to demonstrate system performance and determine system limitations. Radionuclide quantification from profile scan data was performed. Also, localization of three radionuclides in vivo was demonstrated.

Copcutt, B.G.

1983-01-01

299

Software used with the flux mapper at the Solar Parabolic Dish Test Site  

SciTech Connect

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 dictated by design constraints of the flux-mapper controller. Early attempts at data acquisition from the flux-mapper controller were not without difficulty. Time and personnel limitations resulted 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 or alternative development are discussed. A listing of the programs used in the analysis is included in an appendix.

Miyazono, C.

1984-09-15

300

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

301

Control system architecture: The standard and non-standard models  

SciTech Connect

Control system architecture development has followed the advances in computer technology through mainframes to minicomputers to micros and workstations. This technology advance and increasingly challenging accelerator data acquisition and automation requirements have driven control system architecture development. In summarizing the progress of control system architecture at the last International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS) B. Kuiper asserted that the system architecture issue was resolved and presented a standard model''. The standard model'' consists of a local area network (Ethernet or FDDI) providing communication between front end microcomputers, connected to the accelerator, and workstations, providing the operator interface and computational support. Although this model represents many present designs, there are exceptions including reflected memory and hierarchical architectures driven by requirements for widely dispersed, large channel count or tightly coupled systems. This paper describes the performance characteristics and features of the standard model'' to determine if the requirements of non-standard'' architectures can be met. Several possible extensions to the standard model'' are suggested including software as well as the hardware architectural feature.

Thuot, M.E.; Dalesio, L.R.

1993-01-01

302

Control system architecture: The standard and non-standard models  

SciTech Connect

Control system architecture development has followed the advances in computer technology through mainframes to minicomputers to micros and workstations. This technology advance and increasingly challenging accelerator data acquisition and automation requirements have driven control system architecture development. In summarizing the progress of control system architecture at the last International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS) B. Kuiper asserted that the system architecture issue was resolved and presented a ``standard model``. The ``standard model`` consists of a local area network (Ethernet or FDDI) providing communication between front end microcomputers, connected to the accelerator, and workstations, providing the operator interface and computational support. Although this model represents many present designs, there are exceptions including reflected memory and hierarchical architectures driven by requirements for widely dispersed, large channel count or tightly coupled systems. This paper describes the performance characteristics and features of the ``standard model`` to determine if the requirements of ``non-standard`` architectures can be met. Several possible extensions to the ``standard model`` are suggested including software as well as the hardware architectural feature.

Thuot, M.E.; Dalesio, L.R.

1993-06-01

303

Design and implementation of a control and data acquisition system for pellet injectors  

SciTech Connect

A stand-alone control and data acquisition system for pellet injectors has been designed and implemented to support pellet injector development at Oak Ridge Laboratory (ORNL) and to enable ORNL pellet injectors to be installed on various fusion experimental devices. The stand-alone system permits LOCAL operation of the injector from a nearby panel and REMOTE operation from the experiment control room. Major components of the system are (1) an Allen-Bradley PLC 2/30 programmable controller, (2) a VAX minicomputer, and (3) a CAMAC serial highway interface. The programmable logic controller (PLC) is used to perform all control functions of the injector. In LOCAL, the operator interface is provided by an intelligent panel system that has a keypad and pushbutton module programmed from the PLC. In REMOTE, the operator interfaces via a VAX-based color graphics display and uses a trackball and keyboard to issue commands. Communications between the remote and local controls and to the fusion experiment supervisory system are via the CAMAC highway. The VAX archives transient data from pellet shots and trend data acquired from the PLC. Details of the hardware and software design and the operation of the system are presented in this paper. 3 refs., 1 fig.

Baylor, L.R.; Burris, R.D.; Greenwood, D.E.; Stewart, K.A.

1985-01-01

304

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

305

Development and evaluation of an automated reflectance microscope system for the petrographic characterization of bituminous coals  

SciTech Connect

The development of automated coal petrographic techniques will lessen the demands on skilled personnel to do routine work. This project is concerned with the development and successful testing of an instrument which will meet these needs. The fundamental differences in reflectance of the three primary maceral groups should enable their differentiation in an automated-reflectance frequency histogram (reflectogram). Consequently, reflected light photometry was chosen as the method for automating coal petrographic analysis. Three generations of an automated system (called Rapid Scan Versions I, II and III) were developed and evaluated for petrographic analysis. Their basic design was that of a reflected-light microscope photometer with an automatic stage, interfaced with a minicomputer. The hardware elements used in the Rapid Scan Version I limited the system's flexibility and presented problems with signal digitization and measurement precision. Rapid Scan Version II was designed to incorporate a new microscope photometer and computer system. A digital stepping stage was incorporated into the Rapid Scan Version III system. The precision of reflectance determination of this system was found to be +- 0.02 percent reflectance. The limiting factor in quantitative interpretation of Rapid Scan reflectograms is the resolution of reflectance populations of the individual maceral groups. Statistical testing indicated that reflectograms were highly reproducible, and a new computer program, PETAN, was written to interpret the curves for vitrinite reflectance parameters ad petrographic.

Hoover, D. S.; Davis, A.

1980-10-01

306

The first "space" vegetables have been grown in the "SVET" greenhouse using controlled environmental conditions  

NASA Astrophysics Data System (ADS)

The paper describes the "SVET" project—a new generation of space greenhouse with small dimensions. Through the use of a minicomputer, "SVET" is fully capable of automatically operating and controlling environmental systems for higher plant growth. A number of preliminary studies have shown the radish and cabbage to be potentially important crops for CELSS (Closed Environmental Life Support System). The "SVET" space greenhouse was mounted on the "CRYSTAL" technological module docked to the Mir orbital space station on 10 June 1990. Soviet cosmonauts Balandin and Solovyov started the first experiments with the greenhouse on 15 June 1990. Preliminary results of seed cultivation over an initial 54-day period in "SVET" are presented. Morphometrical characteristics of plants brought back to Earth are given. Alteration in plant characteristics, such as growth and developmental changes, or morphological contents were noted. A crop of radish plants was harvested under microgravity conditions. Characteristics of plant environmental control parameters and an estimation of functional properties of control and regulation systems of the "SVET" greenhouse in space flight as received via telemetry data is reported.

Ivanova, T. N.; Bercovich, Yu. A.; Mashinskiy, A. L.; Meleshko, G. I.

307

The first "space" vegetables have been grown in the "SVET" greenhouse using controlled environmental conditions.  

PubMed

The paper describes the "SVET" project--a new generation of space greenhouse with small dimensions. Through the use of a minicomputer, "SVET" is fully capable of automatically operating and controlling environmental systems for higher plant growth. A number of preliminary studies have shown the radish and cabbage to be potentially important crops for CELSS (Closed Environmental Life Support System). The "SVET" space greenhouse was mounted on the "CRYSTAL" technological module docked to the Mir orbital space station on 10 June 1990. Soviet cosmonauts Balandin and Solovyov started the first experiments with the greenhouse on 15 June 1990. Preliminary results of seed cultivation over an initial 54-day period in "SVET" are presented. Morphometrical characteristics of plants brought back to Earth are given. Alteration in plant characteristics, such as growth and developmental changes, or morphological contents were noted. A crop of radish plants was harvested under microgravity conditions. Characteristics of plant environmental control parameters and an estimation of functional properties of control and regulation systems of the "SVET" greenhouse in space flight as received via telemetry data is reported. PMID:11541646

Ivanova, T N; Bercovich YuA; Mashinskiy, A L; Meleshko, G I

1993-08-01

308

The first "space" vegetables have been grown in the "SVET" greenhouse by means of controlled environmental conditions.  

PubMed

The paper describes the project "SVET"--the creating of a small dimensions space greenhouse of new generation. By means of minicomputer, "SVET" is full-automatic operating and controlling environmental conditions system in the higher plants growth unit. A number of studies have selected the radish and cabbage vegetables as a potentially important crop for CELSS (short term cycle of vegetation). The "SVET" space greenhouse has been mounted on the "CRYSTAL" technological module which docked to the "MIR" orbital space station on June 10, 1990. Soviet cosmonauts Balandin and Solovyov started the first experiments with the greenhouse on June 15, 1990. The preliminary results of the seeds cultivation for the first 54-days period in "SVET" are presented. Morphometrical characteristics of the plants, brought back to the Earth are given. The vegetation peculiarities, such as the plants growth and the development slowing-down, or the dry substance contents raising are noted. For the first time, the root crop of radish plants at microgravity conditions, are produced. Characteristics of controlled plants' environment parameters and an estimation of functional properties of control and regulation systems of the "SVET" greenhouse in space flight according to telemetry data is given. PMID:11541047

Ivanova, T N; Bercovich YuA; Mashinskiy, A L; Meleshko, G I

1992-04-01

309

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

310

Final report on the FMIT Control System  

SciTech Connect

The computer control system for the Fusion Materials Irradiation Test Facility (FMIT) prototype accelerator was designed using distributed intelligence driven by a distributed database. The system consists of two minicomputers in the central control room and four microcomputers residing in CAMAC crates located near appropriate subsystems of the accelerator. The system uses single vendor hardware as much as practical in an attempt to minimize the maintenance problems. Local control consoles are an integral part of each node computer to provide subsystem check-out. The main console is located in the central control room and permits one-point operation of the complete control system. Automatic surveillance is provided for each data channel by the node computer with out-of-bounds alarms sent to the main console. Report by exception is used for data logging. This control system has been operational for two years. The computers are too heavily loaded and the operator response is slower than desired. A system upgrade to a faster local-area network has been undertaken and is scheduled to be operational by conference time.

Johnson, J.A.

1985-01-01

311

High performance/low cost accelerator control system  

SciTech Connect

Implementation of a high performance computer control system tailored to the requirements of the SuperHILAC accelerator is described. This system uses a distributed (star-type) structure with fiber optic data links; multiple CPU's operate in parallel at each node. A large number (20) of the latest 16-bit microcomputer boards are used to get a significant processor bandwidth (exceeding that of many mini-computers) at a reasonable price. Because of the large CPU bandwidth, software costs and complexity are significantly reduced and programming can be less real-time critical. In addition all programming can be in a high level language. Dynamically assigned and labeled knobs together with touch-screens allow a flexible operator interface. An X-Y vector graphics system allows display and labeling of real-time signals as well as general plotting functions. Both the accelerator parameters and the graphics system can be driven from BASIC interactive programs in addition to the pre-canned user routines. This allows new applications to be developed quickly and efficiently by physicists, operators, etc. The system, by its very nature and design, is easily upgraded (via next generation of boards) and repaired (by swapping of boards) without a large hardware support group. This control system is now being tested on an existing beamline and is performing well. The techniques used in this system can be readily applied to industrial control systems.

Magyary, S.; Glatz, J.; Lancaster, H.; Selph, F.; Fahmie, M.; Ritchie, A.; Timossi, C.; Hinkson, C.; Benjegerdes, R.

1980-10-01

312

[Three dimensional CT reconstruction system on a personal computer].  

PubMed

A new computer system to produce three dimensional surface image from CT scan has been invented. Although many similar systems have been already developed and reported, they are too expensive to be set up in routine clinical services because most of these systems are based on high power mini-computer systems. According to the opinion that a practical 3D-CT system should be used in daily clinical activities using only a personal computer, we have transplanted the 3D program into a personal computer working in MS-DOS (16-bit, 12 MHz). We added to the program a routine which simulates surgical dissection on the surface image. The time required to produce the surface image ranges from 40 to 90 seconds. To facilitate the simulation, we connected a 3D system with the neuronavigator. The navigator gives the position of the surgical simulation when the surgeon places the navigator tip on the patient's head thus simulating the surgical excision before the real dissection. PMID:2038414

Watanabe, E; Ide, T; Teramoto, A; Mayanagi, Y

1991-03-01

313

H-coal fluid dynamics. Final report, August 1, 1977-December 31, 1979  

SciTech Connect

This report presents the results of work aimed at understanding the hydrodynamic behavior of the H-Coal reactor. A summary of the literature search related to the fluid dynamic behavior of gas/liquid/solid systems has been presented. Design details of a cold flow unit were discussed. The process design of this cold flow model followed practices established by HRI in their process development unit. The cold fow unit has been used to conduct experiments with nitrogen, kerosene, or kerosene/coal char slurries, and HDS catalyst, which at room temperature have properties similar to those existing in the H-Coal reactor. Mineral oil, a high-viscosity liquid, was also used. The volume fractions occupied by gas/liquid slurries and catalyst particles were determined by several experimental techniques. The use of a mini-computer for data collection and calculation has greatly accelerated the analysis and reporting of data. Data on nitrogen/kerosene/HDS catalyst and coal char fines are presented in this paper. Correlations identified in the literature search were utilized to analyze the data. From this analysis it became evident that the Richardson-Zaki correlation describes the effect of slurry flow rate on catalyst expansion. Three-phase fluidization data were analyzed with two models.

Not Available

1980-04-16

314

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

315

GEEF: a geothermal engineering and economic feasibility model. Description and user's manual  

SciTech Connect

The model is designed to enable decision makers to compare the economics of geothermal projects with the economics of alternative energy systems at an early stage in the decision process. The geothermal engineering and economic feasibility computer model (GEEF) is written in FORTRAN IV language and can be run on a mainframe or a mini-computer system. An abbreviated version of the model is being developed for usage in conjunction with a programmable desk calculator. The GEEF model has two main segments, namely (i) the engineering design/cost segment and (ii) the economic analysis segment. In the engineering segment, the model determines the numbers of production and injection wells, heat exchanger design, operating parameters for the system, requirement of supplementary system (to augment the working fluid temperature if the resource temperature is not sufficiently high), and the fluid flow rates. The model can handle single stage systems as well as two stage cascaded systems in which the second stage may involve a space heating application after a process heat application in the first stage.

Not Available

1982-09-01

316

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

317

Three-axis electron-beam test facility  

NASA Astrophysics Data System (ADS)

An electron beam test facility, which consists of a precision multidimensional manipulator built into an ultra-high-vacuum bell jar, was designed, fabricated, and operated at Lewis Research Center. The position within the bell jar of a Faraday cup which samples current in the electron beam under test, is controlled by the manipulator. Three orthogonal axes of motion are controlled by stepping motors driven by digital indexers, and the positions are displayed on electronic totalizers. In the transverse directions, the limits of travel are approximately + or - 2.5 cm from the center with a precision of 2.54 micron (0.0001 in.); in the axial direction, approximately 15.0 cm of travel are permitted with an accuracy of 12.7 micron (0.0005 in.). In addition, two manually operated motions are provided, the pitch and yaw of the Faraday cup with respect to the electron beam can be adjusted to within a few degrees. The current is sensed by pulse transformers and the data are processed by a dual channel box car averager with a digital output. The beam tester can be operated manually or it can be programmed for automated operation. In the automated mode, the beam tester is controlled by a microcomputer (installed at the test site) which communicates with a minicomputer at the central computing facility. The data are recorded and later processed by computer to obtain the desired graphical presentations.

Dayton, J. A., Jr.; Ebihara, B. T.

1981-03-01

318

Sonic inspection of concrete bridge decks  

NASA Astrophysics Data System (ADS)

One technique for determining the integrity of concrete structures, such as bridge decks, involves dragging a chain across it and listening to the audible response. A distinctive, hollow sound is produced when a chain is dragged over a section of concrete containing a delamination. This technique has been automated by recording the sound produced by a dragging chain with a suitable microphone and processing these signals with a minicomputer to distinguish between ``good'' and ``bad'' sections of concrete. The equipment is mounted on a hand-pushed cart with chains attached so that they drag along the surface of the deck. In addition, the microphone is mounted in such a way, using standard noise control techniques, so that external noise is minimized. Traffic noise is filtered electronically. These improvements make the technique operator independent and allow inspections to be made in noisy environments. Another advantage is that this approach produces an objective record of the inspection, available both electronically and in hardcopy. These records can be compared to past and future inspections, allowing the inspectors to monitor the health of the structure. Results from bridge deck inspections will be presented, along with a description of the device and the signal processing techniques.

Costley, R. Daniel; Boudreaux, Gary; Ramsey, William Gene

2003-10-01

319

Why a network energy monitoring and control system?  

NASA Astrophysics Data System (ADS)

By installing control instructions in a computer and connecting it to each piece of equipment, a building facility operator can use the computer to consistently implement control strategies pertaining to utility consumption. This essentially is what is known as an Energy Monitoring and Control System (EMCS). Typically, the building owner insists that the reduction in utility costs after the few years exceeds, or pays back, the installation cost of the EMCS. Due to the high cost of minicomputer equipment, early systems could only have one computer that was remoted through a communications network to many nearby buildings. However, inexpensive but capable microcomputers are available that can provide control for a single building. This report explores the desireability and cost of an EMCS system in general and of these two alternatives in particular. It is found that the quickest payback was found in systems implementing the fewest number of control strategies. Further, it appears that choice of a network over a single building control system depends on the number of buildings connected.

Barron, R. B.

320

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

321

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

322

The 1983-84 Connecticut 45-Hz-band field-strength measurements  

NASA Astrophysics Data System (ADS)

Extremely low frequency (ELF) measurements are made of the transverse horizontal magnetic field strength received in Connecticut. The AN/BSR-1 receiver consists of an AN/UYK-20 minicomputer, a signal timing and interface unit (STIU), a rubidium frequency time standard, two magnetic tape recorders, and a preamplifier. The transmission source of these farfield (1.6-Mm range) measurements is the U.S. Navy's ELF Wisconsin Test Facility (WTF), located in the Chequamegon National Forest in north central Wisconsin, about 8 km south of the village of Clam Lake. The WTF consists of two 22.5-km antennas; one of which is situated approximately in the north-south (NS) direction and the other approximately in the east-west (EW) direction. Each antenna is grounded at both ends. The electrical axis of the WTF EW antenna is 11 deg east of north at 45 Hz and 14 deg east of north at 75Hz. The electrical axis of the WTF NS antenna is 11 deg east of north at 45 Hz and 14 deg east of north at 75 Hz. The WTF array can be steered electrically. Its radiated power is approximately 0.5 W at 45 Hz and 1 W at 75 Hz. This report will compare results of 45 Hz band data taken during 1983 to 1984 with previous 45 Hz band measurements.

Bannister, P. R.

1986-03-01

323

NBSGSC - a FORTRAN program for quantitative x-ray fluorescence analysis. Technical note (final)  

SciTech Connect

A FORTRAN program (NBSGSC) was developed for performing quantitative analysis of bulk specimens by x-ray fluorescence spectrometry. This program corrects for x-ray absorption/enhancement phenomena using the comprehensive alpha coefficient algorithm proposed by Lachance (COLA). NBSGSC is a revision of the program ALPHA and CARECAL originally developed by R.M. Rousseau of the Geological Survey of Canada. Part one of the program (CALCO) performs the calculation of theoretical alpha coefficients, and part two (CALCOMP) computes the composition of the analyte specimens. The analysis of alloys, pressed minerals, and fused specimens can currently be treated by the program. In addition to using measured x-ray tube spectral distributions, spectra from seven commonly used x-ray tube targets could also be calculated with an NBS algorithm included in the program. NBSGSC is written in FORTRAN IV for a Digital Equipment Corporation (DEC PDP-11/23) minicomputer using RLO2 firm disks and an RSX 11M operating system.

Tao, G.Y.; Pella, P.A.; Rousseau, R.M.

1985-04-01

324

Distribution of computer functionality for accelerator control at the Brookhaven AGS  

SciTech Connect

A set of physical and functional system components and their interconnection protocols have been established for all controls work at the AGS. Portions of these designs were tested as part of enhanced operation of the AGS as a source of polarized protons and additional segments will be implemented during the continuing construction efforts which are adding heavy ion capability to our facility. Included in our efforts are the following computer and control system elements: a broad band local area network, which embodies MODEMS; transmission systems and branch interface units; a hierarchical layer, which performs certain data base and watchdog/alarm functions; a group of work station processors (Apollo's) which perform the function of traditional minicomputer host(s) and a layer, which provides both real time control and standardization functions for accelerator devices and instrumentation. Data base and other accelerator functionality is assigned to the most correct level within our network for both real time performance, long-term utility, and orderly growth.

Stevens, A.; Clifford, T.; Frankel, R.

1985-01-01

325

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. Co-op student, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.

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

1986-06-01

326

A communication and monitoring system for an underground coal mine, iron ore mine, and deep underground silver mine. Open file report Jun 73-Mar 78  

SciTech Connect

Advanced communication and monitoring systems were developed and demonstrated in three underground mines representing different mining techniques, geographical areas, and material mined. The first was a large coal mine in western Pennsylvania using room-and-pillar techniques and continuous mining methods. The system developed provided private telephone channels, environmental monitoring, and control of underground equipment, all on a single coaxial cable, with all system operations under the direction of a minicomputer. The second was a magnetite ore mine in eastern Pennsylvania that used block caving mining techniques. A radio system was developed that provided two-way communications between trackless vehicles and roving personnel. A unique system of uhf-vhf repeaters combined with a 'leaky-feeder' transmission line offered operational and emergency features not previously found in mine communication systems. The third was a deep silver mine in the Cour d'Alene district of Idaho. This system utilizes a single wire pair to provide up to 14 voice channels. A combination of PBX, telephone carrier systems, and intercoms offered private conversations, selective signaling, and emergency backup communications.

Bergeron, A.A.; Collins, R.L.; Michels, J.L.

1981-11-01

327

Planning for library automation using MINISIS.  

PubMed

Discussed in this article are the questions that should be addressed by a library which is contemplating automation. The 1st part of the paper deals with the systems study, the results of which from the basis of a library's decision to automate. Specific points to be considered in planning for an automation project are dealt with in the 2nd part. It is assumed that the software to be adopted is MINISIS, a mini-computer data base management system developed by the International Development Research Centre. However, the discussion in the 2nd part is relevant for any library embarking on an automation project. Among the advice given in the conclusion is: 1) The success of the library's automation project depends a great deal on the interaction between the library and the computer staff. 2) The involvement of all the library staff should be maximized from the early planning stages. 3) At every stage of the planning process, decisions must be documented along with reasons why they were made. 4) Training and procedure manual must be written before implementation. 5) The need for thorough planning cannot be overemphasized. PMID:12279642

Sly, M

1983-04-01

328

Updated overview of the Tevatron control system  

SciTech Connect

A single unified control system is used for all of the Fermilab accelerators and storage rings, from the LINAC to the Tevatron and antiproton source. A review of the general features is given - these include a 'host' system consisting of a number of minicomputers integrated with many distributed microprocessors in a variety of subsystems, usage of an in-house developed protocol, GAS, for communication between the two classes of machines, and a Parameter Page program, designed in conjunction with the system database, which allows a wide variety of quantities to be read and set in a coherent fashion. Recent developments include the implementation of a block transfer and 'fast time plot' facility through CAMAC, inclusion of several new computers in the host, a better understanding of system throughput, greatly improved reliability, advent of programs which sequence a large number of independent operations, and the construction of new hardware subsystems. Possible future system upgrades will be briefly presented. A summary of the utilization of a quite large software staff, at a time when the system is no longer under construction, will be discussed.

Lucas, P.

1987-10-01

329

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

330

A fast filter processor as a part of the trigger logic in an elastic scattering experiment  

NASA Astrophysics Data System (ADS)

A fast special purpose processor as a part of the trigger logic in an elastic scattering experiment is described. The decision to incorporate such a processor was taken because the trigger rate was estimated to be an order of magnitude higher than the data taking capability of the on-line minicomputer, a NORD 10. The processor is capable of checking the coplanarity and the opening angle of the two outgoing tracks within about 100 ?s. This is done with a spatial resolution of 1 mm by using two points along each track given by 3 MWPCs. For comparison this is two orders of magnitude faster than the same algorithm coded in assembly language on a PDP 11/40. The main contribution to this increased speed is due to extensive use of pipelining and parallelism. When running with the processor in the trigger, 75% more elastic events per incoming beam particle were collected, and 3 times as many elastic events per trigger were recorded on to tape for further in-depth analysis, than previously. Due to major improvements in the primary trigger logic this was less than the gain initially anticipated. A first version of the processor was designed and constructed in the CERN DD division by J. Joosten, M. Letheren and B. Martin under the supervision of C. Verkerk. The author was involved in the final design, construction and testing, and subsequently was responsible for the integration, ``programming'' and running of the processor in the experiment. Now at University College, London, UK.

Kenyon Gjerpe, I.

1981-04-01

331

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

332

Development and applications of an interactive digital filter design program.  

PubMed

We have implemented an interactive digital filter design program in the HP 1000 computer at the Department of Electrical Engineering of the University of Washington. This program allows users to design different types of filters interactively with both amplitude and phase responses displayed on graphic devices. The performance of each designed filter can be evaluated conveniently before the best one is chosen and implemented for any particular application. This program can design recursive filters, e.g. Butterworth, Chebyshev and elliptic, or nonrecursive filters with one out of six different windows, i.e. rectangular, triangular, Hann, Hamming, Blackman and Kaiser. The main outputs from this program are coefficients of a transfer function of an analog filter, a digital filter, or both. Therefore, the design of both analog and digital filters is facilitated by using this program. The program is very simple to use and does not require background in analog or digital filter principles in order to run it. The program is written in standard FORTRAN and is about 30 kbytes in size excluding the graphics display routines. Since it uses standard FORTRAN, it can be easily transported to minicomputer and microcomputer systems that have a FORTRAN compiler and minimal graphics capabilities. This program is available for distribution to interested institutions and laboratories. PMID:3852710

Woo, H W; Kim, Y M; Tompkins, W J

1985-10-01

333

Radiographic detection of 100 A thickness variations in 1-micron-thick coatings applied to submillimeter -diameter laser fusion targets  

NASA Astrophysics Data System (ADS)

We have developed X-ray radiography to measure thickness variations of coatings on laser fusion targets. Our technique is based on measuring the variation in X-ray transmission through the targets. The simplest targets are hollow glass microshells or microballoons 100 to 500 m in diameter, that have several layers of metals or plastics, 1 to 100 m thick. Our goal is to examine these opaque coatings for thickness variations as small as 1% or 0.1%, depending on the type of defect. Using contact radiography we have obtained the desired sensitivity for concentric and elliptical defects of 1%. This percentage corresponds to thickness variations as small as 100 A in a 1-m-thick coating. For warts and dimples, the desired sensitivity is a function of the area of the defect, and we are developing a system to detect 0.1% thickness variations that cover an area 10 m by 10 m. We must use computer analysis of contact radiographs to measure 1% thickness variations in either concentricity or ellipticity. Because this analysis takes so long on our minicomputer, we preselect the radiographs by looking for defects at the 10% level on a video image analysis system.

Stupin, D. M.

334

Radiographic detection of 100 A thickness variations in 1-. mu. m-thick coatings applied to submillimeter-diameter laser fusion targets  

SciTech Connect

We have developed x-ray radiography to measure thickness variations of coatings on laser fusion targets. Our technique is based on measuring the variation in x-ray transmission through the targets. The simplest targets are hollow glass microshells or microballoons 100 to 500 ..mu..m in diameter, that have several layers of metals or plastics, 1 to 100 ..mu..m thick. Our goal is to examine these opaque coatings for thickness variations as small as 1% or 0.1%, depending on the type of defect. Using contact radiography we have obtained the desired sensitivity for concentric and elliptical defects of 1%. This percentage corresponds to thickness variations as small as 100 A in a 1-..mu..m-thick coating. For warts and dimples, the desired sensitivity is a function of the area of the defect, and we are developing a system to detect 0.1% thickness variations that cover an area 10 ..mu..m by 10 ..mu..m. We must use computer analysis of contact radiographs to measure 1% thickness variations in either concentricity or ellipticity. Because this analysis takes so long on our minicomputer, we preselect the radiographs by looking for defects at the 10% level on a video image analysis system.

Stupin, D.M.

1986-01-01

335

Acoustic monitoring of power-plant valves. Final report  

SciTech Connect

Advanced surveillance diagnostics were applied to key nuclear power plant valves to improve the availability of the power plant. Two types of valves were monitored: BWR three-stage, pilot-operated safety/relief valves and PWR feedwater control valves. Excessive leakage across the pilot-disc seat in BWR safety/relief valves can cause the second-stage pressure to reach the critical value that activates the valve, even though the set pressure was not exceeded. Acoustic emissions created by the leak noise were monitored and calibrated to indicate incipient activation of the safety/relief valve. Hydrodynamic, vibration, control and process signals from PWR feedwater control valves were monitored by a mini-computer based surveillance system. On-line analysis of these signals coupled with earlier analytic modelling identified: (1) cavitation, (2) changes in stem packaging tightness, (3) valve stem torquing, (4) transducer oscillations, and (5) peak vibration levels during power transients. These conditions were detected by a pattern recognition algorithm that continuously measured the signals for abnormal signatures.

Allen, J.W.; Hartman, W.F.; Robinson, J.C.

1982-06-01

336

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

337

A C+ + class library foundation for developing an electronic medical record.  

PubMed

The basic features that gave the M (or Mumps, as it originally called) language its initial popularity are still important to many programming applications, especially those involving the health care domain. To date, however, efforts to change the language have been predicated on the axiom that the existing structure must be preserved in order to accommodate legacy applications. To many, it is becoming clear that the 1960s' minicomputer induced interpreter syntax underlying M is inadequate and incapable of further evolution. In this paper, we demonstrate an alternative that preserves those features that many find to be the essence of M in a manner that is transportable to other language environments and not directly linked to any underlying operating system. This article describes a set of operating system independent C + + class libraries, based on M, designed to enhance the C + + programming environment with features that facilitate health care record applications development. These extensions allow the user to manage hierarchical data base problems, such as those typical in the health care domain, at a level of abstraction consistent with many information theoretic models commonly in use. Examples are given from a pilot implementation of the libraries to demonstrate a simple health care record application. PMID:7497703

O'Kane, K C; McColligan, E E

1995-07-01

338

The practical significance of two-dimensional deconvolution in echography.  

PubMed

This paper evaluates deconvolution (inverse filtering) as applied to ultrasonic imaging systems, and discusses the obstacles which are encountered employing the technique in practice. A minicomputer is used to generate artificial echo signals, simulating rf signals resulting from a set of point reflectors in a homogeneous medium, as recorded by an electronically focused group-steered linear array scanner. Two-dimensional deconvolution in combination with a Wiener noise reduction filter (i.e., a Wiener-Inverse filter) is applied to these simulated rf signals, which were contaminated with white noise. The efficacy of the Wiener-Inverse filter is defined in terms of its ability to resolve two point reflectors with a lateral spacing equal to the local -6 dB width of the ultrasonic beam. In favorable circumstances, the targets are resolved at signal-to-noise ratios (SNR) better than 20 dB, where SNR is defined as the maximum signal power divided by the average noise power level. Nonlinear effects due to quantization or signal clipping are investigated. In order to improve the resolution of an rf signal with a dynamic range of 40 dB, the input signal should be digitized at a minimum of 12 bits. The problem of signal clipping can be circumvented by oversampling. The two-dimensional Wiener-Inverse filter is defined in terms of both temporal and spatial properties of the insonification. Effects of wave diffraction give rise to a depth-dependent ultrasonic beam. As a result of a misfit of the Wiener-Inverse filter and the local properties of the ultrasonic beam, erroneous noisy texture arises in the image. Adaptation of the Wiener-Inverse filter with respect to the beam properties gives acceptable results, at the expense of a rather large computational effort. PMID:3318076

Jeurens, T J; Somer, J C; Smeets, F A; Hoeks, A P

1987-04-01

339

The digital geologic map of Colorado in ARC/INFO format, Part C. Explanation sheet database  

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

340

Data acquisition system and instrumentation for the Rocky Mountain I Coal Gasification test  

SciTech Connect

Lawrence Livermore National Laboratory (LLNL) designed the data acquisition system (DAS) to measure all surface and subsurface process parameters during the Rocky Mountain I (RM I) Underground Coal Gasification (UCG) test. The Hewlett Packard (HP) minicomputer-based system acquired data from strings of type-K thermocouples that were emplaced in vertical wells at key locations in the reactor area. Process data such as injection and production flow rates, temperatures, and pressures were also measured and stored by the DAS. In addition, the gas analysis data from gas chromatographs and the mass spectrometer were logged throughout the test. An improved method of measuring the water to dry gas ratio was also developed and utilized for the RM I test. It consisted of a proven hydrostatic liquid level measurement technique and a novel purge method thus producing water/dry data that was considerably improved in both accuracy and frequency of measurement. An additional diagnostic instrument added to the CRIP injection liner and a VIW1 dip tube was a stainless teel jacketed twisted pair of copper wires whose lengths were measured using a time domain reflectometer (TDR) technique. The measurement of the cable lengths would be correlated to the length of the liner and dip tube over the duration of the test. This measurement combined with thermocouple data was used to model cavity growth. Early indications are that a number of subsurface thermocouples may have burst because of gas buildup in the sheath. Many may have failed before they actually saw a critical process temperature. Future use of any sheath type thermocouples will require acceptance testing and vendor qualification to preclude this type of failure. Future UCG tests will require the use of cost-effective and reliable subsurface diagnostics, such as the TDR technique combined with thermocuples, to characterize the dimensions, position, and movement of the underground burn cavity. 7 refs., 8 figs.

Metzger, G.A.; Britten, J.A.

1988-08-01

341

Non-invasive measurement of cardiac output by a single breath constant expiratory technique.  

PubMed Central

A new single breath test has been developed that measures pulmonary blood flow (Qc) and pulmonary tissue volume by using the fact that Qc is proportional to the relationship between the absorption rate of acetylene (C2H2) from the alveolar gas and the rate of change of lung volume during constant expiratory flow. To make these measurements a bag in bottle system with a rolling seal spirometer, a mass spectrometer, and a minicomputer with analogue to digital conversion have been used. Qc was compared with cardiac output measured by the thermodilution technique in 20 patients with cardiac disease; some also had mild chronic obstructive pulmonary disease. The mean (SD) resting Qc for the group was 5.27 (1.22) l/min and the cardiac output measured by thermodilution was 5.30 (1.31) l/min. The mean difference between the two estimations of cardiac output was 0.03 l and the standard deviation of this difference was 0.76 l. The Qc technique was not successful in patients with an FEV1/FVC less than 60%, but seemed to be accurate in those with higher FEV1/FVC values. Correction of Qc for the effect of venous admixture in 14 patients resulted in an average 19% overestimation of cardiac output (6.01 (2.52) l/min v 5.05 (1.64) l/min). It is concluded that cardiac output can be accurately measured in patients with cardiac or mild pulmonary disease. No correction for venous admixture due to ventilation-perfusion mismatch was necessary in these patients, presumably because the large breath used by the technique overcomes most mild ventilation-perfusion maldistribution. These findings, in addition to the non-invasive nature of the technique, suggest potential value for the measurement of cardiac output in various clinical conditions. Images

Elkayam, U; Wilson, A F; Morrison, J; Meltzer, P; Davis, J; Klosterman, P; Louvier, J; Henry, W L

1984-01-01

342

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) are being used as initial conditions, and forcing is introduced by lateral heating, surface shear and sloping boundaries. The goals of the proposed work include: quantification of the effects of finite amplitude disturbances on stable, double diffusive systems, particularly with respect to lateral heating, development of an improved understanding of the physical phenomena present in wind-driven shear flows in double diffusive stratified environments, increasing our knowledge-base on turbulent flow in stratified environments and how to represent it, and formulation of numerical code for such flows. The work is being carried out in a new experimental facility at Stanford and on laboratory minicomputers and CRAY computers. In particular we are focusing on the following key issues. The formation and propagation of double diffusive intrusions away from a heated wall and the effects of lateral heating on the double diffusive system; The interaction between the double diffusively influenced fluxes and the turbulence induced fluxes; The formation of gravitational intrusions; and The influence of double diffusive gradients on mixed layer deepening. The goals of the project were as follows. Physical experiments: Construct experimental facility; Modify and fabricate instrument rakes; Develop sampling and calibration software; Develop stratification techniques; Conduct flow visualization studies; Qualify wind tunnel over a range of wind speeds. Numerical experiments: Adapt REMIXCS to handle turbulent flows; Investigate approaches for specifying wind field; Perform calculations for low wind speeds. With the exception of the wind tunnel qualification, all the tasks have already been completed and we are now conducting quantitative experiments. 2 figs.

Koseff, J.R.

1988-05-01

343

Immunoglobulin surface-binding kinetics studied by total internal reflection with fluorescence correlation spectroscopy.  

PubMed Central

An experimental application of total internal reflection with fluorescence correlation spectroscopy (TIR/FCS) is presented. TIR/FCS is a new technique for measuring the binding and unbinding rates and surface diffusion coefficient of fluorescent-labeled solute molecules in equilibrium at a surface. A laser beam totally internally reflects at the solid-liquid interface, selectively exciting surface-adsorbed molecules. Fluorescence collected by a microscope from a small, well-defined surface area approximately 5 micron2 spontaneously fluctuates as solute molecules randomly bind to, unbind from, and/or diffuse along the surface in chemical equilibrium. The fluorescence is detected by a photomultiplier and autocorrelated on-line by a minicomputer. The shape of the autocorrelation function depends on the bulk and surface diffusion coefficients, the binding rate constants, and the shape of the illuminated and observed region. The normalized amplitude of the autocorrelation function depends on the average number of molecules bound within the observed area. TIR/FCS requires no spectroscopic or thermodynamic change between dissociated and complexed states and no extrinsic perturbation from equilibrium. Using TIR/FCS, we determine that rhodamine-labeled immunoglobulin and insulin each nonspecifically adsorb to serum albumin-coated fused silica with both reversible and irreversible components. The characteristic time of the most rapidly reversible component measured is approximately 5 ms and is limited by the rate of bulk diffusion. Rhodamine-labeled bivalent antibodies to dinitrophenyl (DNP) bind to DNP-coated fused silica virtually irreversibly. Univalent Fab fragments of these same antibodies appear to specifically bind to DNP-coated fused silica, accompanied by a large amount of nonspecific binding. TIR/FCS is shown to be a feasible technique for measuring absorption/desorption kinetic rates at equilibrium. In suitable systems where nonspecific binding is low, TIR/FCS should prove useful for measuring specific solute-surface kinetic rates. Images FIGURE 3

Thompson, N L; Axelrod, D

1983-01-01

344

Integrating real-time digital signal processing capability into a large research and development facility  

SciTech Connect

The Instrumentation and Controls Division at Oak Ridge National Laboratory recently developed and installed a large scale, real-time measurement system for the world`s largest pressurized water tunnel. This water tunnel, the Large Cavitation Channel (LCC) provides a research and development facility for the study of acoustic phenomena to aid in model testing of new naval ship and submarine designs. The LCC design required the development of a near-field beamformer in addition to extending the range of real-time processing capability to frequencies unavailable at other facilities. The beamformer acquires and processes time-domain acoustic data at 9.5 MB/s from up to 45 hydrophones while. The acoustic processing software provides for the real-time analysis of acoustic data. Up to 128 facility sensors are sampled, time stamped, and stored at 600 kB/s. The system generates information for acoustic phenomena and facility measurements in real time so that the operator can make facility adjustments to control the running experiment This real-time control of facility conditions requires that the measurement system integrate facility and acoustic data for simultaneous display to the operator in engineering units via high-end workstations. A dual-host minicomputer configuration with high-end workstations connected via an Ethernet networking cluster controls and integrates measurement and display subsystems. The system architecture integrates high-performance array processors, matrix switches, signal conditioning amplifiers, antialiasing filter subsystems, high-precision analog-to-digital subsystems, high-performance data disks, and support equipment The hardware and software architecture with its distributed computers and distributed real-time data base, the signal processing algorithms and architecture, and the flexible user interface for facility and measurements integration are described in this paper.

Manges, W.W.; Mallinak-Glassell, J.T.; Breeding, J.E.; Jansen, J.M. Jr.; Tate, R.M.; Bentz, R.R.

1992-12-31

345

Integrating real-time digital signal processing capability into a large research and development facility  

SciTech Connect

The Instrumentation and Controls Division at Oak Ridge National Laboratory recently developed and installed a large scale, real-time measurement system for the world's largest pressurized water tunnel. This water tunnel, the Large Cavitation Channel (LCC) provides a research and development facility for the study of acoustic phenomena to aid in model testing of new naval ship and submarine designs. The LCC design required the development of a near-field beamformer in addition to extending the range of real-time processing capability to frequencies unavailable at other facilities. The beamformer acquires and processes time-domain acoustic data at 9.5 MB/s from up to 45 hydrophones while. The acoustic processing software provides for the real-time analysis of acoustic data. Up to 128 facility sensors are sampled, time stamped, and stored at 600 kB/s. The system generates information for acoustic phenomena and facility measurements in real time so that the operator can make facility adjustments to control the running experiment This real-time control of facility conditions requires that the measurement system integrate facility and acoustic data for simultaneous display to the operator in engineering units via high-end workstations. A dual-host minicomputer configuration with high-end workstations connected via an Ethernet networking cluster controls and integrates measurement and display subsystems. The system architecture integrates high-performance array processors, matrix switches, signal conditioning amplifiers, antialiasing filter subsystems, high-precision analog-to-digital subsystems, high-performance data disks, and support equipment The hardware and software architecture with its distributed computers and distributed real-time data base, the signal processing algorithms and architecture, and the flexible user interface for facility and measurements integration are described in this paper.

Manges, W.W.; Mallinak-Glassell, J.T.; Breeding, J.E.; Jansen, J.M. Jr.; Tate, R.M.; Bentz, R.R.

1992-01-01

346

Integrating real-time digital signal processing capability into a large research and development facility  

NASA Astrophysics Data System (ADS)

The Instrumentation and Controls Division at Oak Ridge National Laboratory recently developed and installed a large scale, real-time measurement system for the world's largest pressurized water tunnel. This water tunnel, the Large Cavitation Channel (LCC) provides a research and development facility for the study of acoustic phenomena to aid in model testing of new naval ship and submarine designs. The LCC design required the development of a near-field beamformer in addition to extending the range of real-time processing capability to frequencies unavailable at other facilities. The beamformer acquires and processes time-domain acoustic data at 9.5 MB/s from up to 45 hydrophones while performing 200 million floating-point operations per second, producing a time-integrated, spatially filtered, frequency-domain data set with improved signal-to-noise ratio. The acoustic processing software provides for the real-time analysis of acoustic data. Up to 128 facility sensors are sampled, time stamped, and stored at 600 kB/s. The system generates information for acoustic phenomena and facility measurements in real-time so that the operator can make facility adjustments to control the running equipment. This real-time control of facility conditions requires that the measurement system integrate facility and acoustic data for simultaneous display to the operator in engineering units via high-end workstations. A dual-host minicomputer configuration with high-end workstations connected via an Ethernet networking cluster controls and integrates measurement and display subsystems. The hardware and software architecture is described in this paper.

Manges, W. W.; Mallinak-Glassell, J. T.; Breeding, J. E.; Jansen, J. M., Jr.; Tate, R. M.; Bentz, R. R.

347

Graphics processing, video digitizing, and presentation of geologic information  

SciTech Connect

Computer users have unparalleled opportunities to use powerful desktop computers to generate, manipulate, analyze and use graphic information for better communication. Processing graphic geologic information on a personal computer like the Amiga used for the projects discussed here enables geoscientists to create and manipulate ideas in ways once available only to those with access to large budgets and large mainframe computers. Desktop video applications such as video digitizing and powerful graphic processing application programs add a new dimension to the creation and manipulation of geologic information. Videotape slide shows and animated geology give geoscientists new tools to examine and present information. Telecommunication programs such as ATalk III, which can be used as an all-purpose telecommunications program or can emulate a Tektronix 4014 terminal, allow the user to access Sun and Prime minicomputers and manipulate graphic geologic information stored there. Graphics information displayed on the monitor screen can be captured and saved in the standard Amiga IFF graphic format. These IFF files can be processed using image processing programs such as Butcher. Butcher offers edge mapping, resolution conversion, color separation, false colors, toning, positive-negative reversals, etc. Multitasking and easy expansion that includes IBM-XT and AT co-processing offer unique capabilities for graphic processing and file transfer between Amiga-DOS and MS-DOS. Digital images produced by satellites and airborne scanners can be analyzed on the Amiga using the A-Image processing system developed by the CSIRO Division of Mathematics and Statistics and the School of Mathematics and Computing at Curtin University, Australia.

Sanchez, J.D. (Geological Survey, Denver, CO (USA))

1990-02-01

348

Side-scan sonar mapping: Pseudo-real-time processing and mosaicking techniques  

SciTech Connect

The US Geological Survey (USGS) surveyed 1,000 km{sup 2} of the continental shelf off San Francisco during a 17-day cruise, using a 120-kHz side-scan sonar system, and produced a digitally processed sonar mosaic of the survey area. The data were processed and mosaicked in real time using software developed at the Lamont-Doherty Geological Observatory and modified by the USGS, a substantial task due to the enormous amount of data produced by high-resolution side-scan systems. Approximately 33 megabytes of data were acquired every 1.5 hr. The real-time sonar images were displayed on a PC-based workstation and the data were transferred to a UNIX minicomputer where the sonar images were slant-range corrected, enhanced using an averaging method of desampling and a linear-contrast stretch, merged with navigation, geographically oriented at a user-selected scale, and finally output to a thermal printer. The hard-copy output was then used to construct a mosaic of the survey area. The final product of this technique is a UTM-projected map-mosaic of sea-floor backscatter variations, which could be used, for example, to locate appropriate sites for sediment sampling to ground truth the sonar imagery while still at sea. More importantly, reconnaissance surveys of this type allow for the analysis and interpretation of the mosaic during a cruise, thus greatly reducing the preparation time needed for planning follow-up studies of a particular area.

Danforth, W.W.; Schwab, W.C.; O'Brien, T.F. (Geological Survey, Woods Hole, MA (USA)); Karl, H. (Geological Survey, Menlo Park, CA (USA))

1990-05-01

349

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

350

Obituary: Arthur Dodd Code (1923-2009)  

NASA Astrophysics Data System (ADS)

Former AAS president Arthur Dodd Code, age 85, passed away at Meriter Hospital in Madison, Wisconsin on 11 March 2009, from complications involving a long-standing pulmonary condition. Code was born in Brooklyn, New York on 13 August 1923, as the only child of former Canadian businessman Lorne Arthur Code and Jesse (Dodd) Code. An experienced ham radio operator, he entered the University of Chicago in 1940, but then enlisted in the U.S. Navy (1943-45) and was later stationed as an instructor at the Naval Research Laboratory, Washington, D.C. During the war, he gained extensive practical experience with the design and construction of technical equipment that served him well in years ahead. Concurrently, he took physics courses at George Washington University (some under the tutelage of George Gamow). In 1945, he was admitted to the graduate school of the University of Chicago, without having received his formal bachelor's degree. In 1950, he was awarded his Ph.D. for a theoretical study of radiative transfer in O- and B-type stars, directed by Subrahmanyan Chandrasekhar. hired onto the faculty of the Department of Astronomy at the University of Wisconsin-Madison (1951-56). He then accepted a tenured appointment at the California Institute of Technology and the Mount Wilson and Palomar Observatories (1956-58). But following the launch of Sputnik, Code returned to Wisconsin in 1958 as full professor of astronomy, director of the Washburn Observatory, and department chairman so that he could more readily pursue his interest in space astronomy. That same year, he was chosen a member of the Space Science Board of the National Academy of Sciences (created during the International Geophysical Year) and shortly became one of five principal investigators of the original NASA Space Science Working Group. In a cogent 1960 essay, Code argued that astrophysical investigations, when conducted from beyond the Earth's atmosphere, "cannot fail to have a tremendous impact on the future course of stellar astronomy," a prediction strongly borne out in the decades that followed. In 1959, Code founded the Space Astronomy Laboratory (SAL) within the UW Department of Astronomy. Early photometric and spectrographic equipment was test-flown aboard NASA's X-15 rocket plane and Aerobee sounding rockets. Along with other SAL personnel, including Theodore E. Houck, Robert C. Bless, and John F. McNall, Code (as principal investigator) was responsible for the design of the Wisconsin Experiment Package (WEP) as one of two suites of instruments to be flown aboard the Orbiting Astronomical Observatory (OAO), which represented a milestone in the advent of space astronomy. With its seven reflecting telescopes feeding five filter photometers and two scanning spectrometers, WEP permitted the first extended observations in the UV portion of the spectrum. After the complete failure of the OAO-1 spacecraft (launched in 1966), OAO-2 was successfully launched on 7 December 1968 and gathered data on over a thousand celestial objects during the next 50 months, including stars, nebulae, galaxies, planets, and comets. These results appeared in a series of more than 40 research papers, chiefly in the Ap.J., along with the 1972 monograph, The Scientific Results from the Orbiting Astronomical Observatory (OAO-2), edited by Code. Between the OAO launches, other SAL colleagues of Code developed the Wisconsin Automatic Photoelectric Telescope (or APT), the first computer-controlled (or "robotic") telescope. Driven by a PDP-8 mini-computer, it routinely collected atmospheric extinction data. Code was also chosen principal investigator for the Wisconsin Ultraviolet Photo-Polarimeter Experiment (or WUPPE). This used a UV-sensitive polarimeter designed by Kenneth Nordsieck that was flown twice aboard the space shuttles in 1990 and 1995. Among other findings, WUPPE observations demonstrated that interstellar dust does not appreciably change the direction of polarization of starlight, thereby supporting its possible composition as graphite. Code was the recipie

Marché, Jordan D., II

2009-12-01

351

Applications of research from the U.S. Geological Survey program, assessment of regional earthquake hazards and risk along the Wasatch Front, Utah  

USGS Publications Warehouse

INTERACTIVE WORKSHOPS: ESSENTIAL ELEMENTS OF THE EARTHQUAKE HAZARDS RESEARCH AND REDUCTION PROGRAM IN THE WASATCH FRONT, UTAH: Interactive workshops provided the forum and stimulus necessary to foster collaboration among the participants in the multidisciplinary, 5-yr program of earthquake hazards reduction in the Wasatch Front, Utah. The workshop process validated well-documented social science theories on the importance of interpersonal interaction, including interaction between researchers and users of research to increase the probability that research will be relevant to the user's needs and, therefore, more readily used. REDUCING EARTHQUAKE HAZARDS IN UTAH: THE CRUCIAL CONNECTION BETWEEN RESEARCHERS AND PRACTITIONERS: Complex scientific and engineering studies must be translated for and transferred to nontechnical personnel for use in reducing earthquake hazards in Utah. The three elements needed for effective translation, likelihood of occurrence, location, and severity of potential hazards, and the three elements needed for effective transfer, delivery, assistance, and encouragement, are described and illustrated for Utah. The importance of evaluating and revising earthquake hazard reduction programs and their components is emphasized. More than 30 evaluations of various natural hazard reduction programs and techniques are introduced. This report was prepared for research managers, funding sources, and evaluators of the Utah earthquake hazard reduction program who are concerned about effectiveness. An overview of the Utah program is provided for those researchers, engineers, planners, and decisionmakers, both public and private, who are committed to reducing human casualties, property damage, and interruptions of socioeconomic systems. PUBLIC PERCEPTIONS OF THE IMPLEMENTATION OF EARTHQUAKE MITIGATION POLICIES ALONG THE WASATCH FRONT IN UTAH: The earthquake hazard potential along the Wasatch Front in Utah has been well defined by a number of scientific and engineering studies. Translated earthquake hazard maps have also been developed to identify areas that are particularly vulnerable to various causes of damage such as ground shaking, surface rupturing, and liquefaction. The implementation of earthquake hazard reduction plans are now under way in various communities in Utah. The results of a survey presented in this paper indicate that technical public officials (planners and building officials) have an understanding of the earthquake hazards and how to mitigate the risks. Although the survey shows that the general public has a slightly lower concern about the potential for economic losses, they recognize the potential problems and can support a number of earthquake mitigation measures. The study suggests that many community groups along the Wasatch Front, including volunteer groups, business groups, and elected and appointed officials, are ready for action-oriented educational programs. These programs could lead to a significant reduction in the risks associated with earthquake hazards. A DATA BASE DESIGNED FOR URBAN SEISMIC HAZARDS STUDIES: A computerized data base has been designed for use in urban seismic hazards studies conducted by the U.S. Geological Survey. The design includes file structures for 16 linked data sets, which contain geological, geophysical, and seismological data used in preparing relative ground response maps of large urban areas. The data base is organized along relational data base principles. A prototype urban hazards data base has been created for evaluation in two urban areas currently under investigation: the Wasatch Front region of Utah and the Puget Sound area of Washington. The initial implementation of the urban hazards data base was accomplished on a microcomputer using dBASE III Plus software and transferred to minicomputers and a work station. A MAPPING OF GROUND-SHAKING INTENSITIES FOR SALT LAKE COUNTY, UTAH: This paper documents the development of maps showing a

Edited by Gori, Paula L.

1993-01-01

352

The ASC Sequoia Programming Model  

SciTech Connect

In the late 1980's and early 1990's, Lawrence Livermore National Laboratory was deeply engrossed in determining the next generation programming model for the Integrated Design Codes (IDC) beyond vectorization for the Cray 1s series of computers. The vector model, developed in mid 1970's first for the CDC 7600 and later extended from stack based vector operation to memory to memory operations for the Cray 1s, lasted approximately 20 years (See Slide 5). The Cray vector era was deemed an extremely long lived era as it allowed vector codes to be developed over time (the Cray 1s were faster in scalar mode than the CDC 7600) with vector unit utilization increasing incrementally over time. The other attributes of the Cray vector era at LLNL were that we developed, supported and maintained the Operating System (LTSS and later NLTSS), communications protocols (LINCS), Compilers (Civic Fortran77 and Model), operating system tools (e.g., batch system, job control scripting, loaders, debuggers, editors, graphics utilities, you name it) and math and highly machine optimized libraries (e.g., SLATEC, and STACKLIB). Although LTSS was adopted by Cray for early system generations, they later developed COS and UNICOS operating systems and environment on their own. In the late 1970s and early 1980s two trends appeared that made the Cray vector programming model (described above including both the hardware and system software aspects) seem potentially dated and slated for major revision. These trends were the appearance of low cost CMOS microprocessors and their attendant, departmental and mini-computers and later workstations and personal computers. With the wide spread adoption of Unix in the early 1980s, it appeared that LLNL (and the other DOE Labs) would be left out of the mainstream of computing without a rapid transition to these 'Killer Micros' and modern OS and tools environments. The other interesting advance in the period is that systems were being developed with multiple 'cores' in them and called Symmetric Multi-Processor or Shared Memory Processor (SMP) systems. The parallel revolution had begun. The Laboratory started a small 'parallel processing project' in 1983 to study the new technology and its application to scientific computing with four people: Tim Axelrod, Pete Eltgroth, Paul Dubois and Mark Seager. Two years later, Eugene Brooks joined the team. This team focused on Unix and 'killer micro' SMPs. Indeed, Eugene Brooks was credited with coming up with the 'Killer Micro' term. After several generations of SMP platforms (e.g., Sequent Balance 8000 with 8 33MHz MC32032s, Allian FX8 with 8 MC68020 and FPGA based Vector Units and finally the BB&N Butterfly with 128 cores), it became apparent to us that the killer micro revolution would indeed take over Crays and that we definitely needed a new programming and systems model. The model developed by Mark Seager and Dale Nielsen focused on both the system aspects (Slide 3) and the code development aspects (Slide 4). Although now succinctly captured in two attached slides, at the time there was tremendous ferment in the research community as to what parallel programming model would emerge, dominate and survive. In addition, we wanted a model that would provide portability between platforms of a single generation but also longevity over multiple--and hopefully--many generations. Only after we developed the 'Livermore Model' and worked it out in considerable detail did it become obvious that what we came up with was the right approach. In a nutshell, the applications programming model of the Livermore Model posited that SMP parallelism would ultimately not scale indefinitely and one would have to bite the bullet and implement MPI parallelism within the Integrated Design Code (IDC). We also had a major emphasis on doing everything in a completely standards based, portable methodology with POSIX/Unix as the target environment. We decided against specialized libraries like STACKLIB for performance, but kept as many general purpose, portable math libraries as were needed by the co

Seager, M

2008-08-06