Science.gov

Sample records for minicomputers

  1. Dedicated Minicomputers In Optical Design

    NASA Astrophysics Data System (ADS)

    Gustafson, Darryl E.

    1980-09-01

    Advancing computer technology led to the introduction of powerful minicomputer tools for optical design in 1975. Continuing hardware advances have opened up further options for the optical designer while expectations of program performance and scope have risen. Various hardware/software optical design products have appeared and will continue to be developed, giving the optical designer a wide range of choices. The development of an effective system for optical design involves consideration of many goals and tradeoffs relating to both hard-ware and software. These include: scope of program - decentered, multimode, no bilateral symmetry requirement, "large machine" capability; ease of use - the human interface; speed of computation and peripherals - benchmark results; memory size limitations; efficiency of memory use by the program; cost of hardware needed to embody the chosen scope of program; reliability and service; means of software updating; and future growth potential. These tradeoffs will be reviewed in the context of the CODE VTM hardware system.

  2. A NASA family of minicomputer systems, Appendix A

    NASA Technical Reports Server (NTRS)

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

    1972-01-01

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

  3. Minicomputer Capabilities Related to Meteorological Aspects of Emergency Response

    SciTech Connect

    Rarnsdell, J. V.; Athey, G. F.; Ballinger, M. Y.

    1982-02-01

    The purpose of this report is to provide the NRC staff involved in reviewing licensee emergency response plans with background information on the capabilities of minicomputer systems that are related to the collection and dissemination of meteorological infonmation. The treatment of meteorological information by organizations with existing emergency response capabilities is described, and the capabilities, reliability and availability of minicomputers and minicomputer systems are discussed.

  4. Minicomputer Games. Teacher's Guide. Classroom Lessons and Games Centered around the Papy Minicomputer...A Source of Rich Situations That Call for Mental Arithmetic and Quick Strategic Thinking.

    ERIC Educational Resources Information Center

    CEMREL, Inc., St. Louis, MO.

    This material describes two games, Minicomputer Tug-of-War and Minicomputer Golf. The Papy Minicomputer derives its name from George Papy, who invented and introduced it in the 1950's. The Minicomputer is seen as an abacus with the flavor of a computer in its schematic representation of numbers. Its manner of representation combines decimal…

  5. Integrated computer-aided design using minicomputers

    NASA Technical Reports Server (NTRS)

    Storaasli, O. O.

    1980-01-01

    Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM), a highly interactive software, has been implemented on minicomputers at the NASA Langley Research Center. CAD/CAM software integrates many formerly fragmented programs and procedures into one cohesive system; it also includes finite element modeling and analysis, and has been interfaced via a computer network to a relational data base management system and offline plotting devices on mainframe computers. The CAD/CAM software system requires interactive graphics terminals operating at a minimum of 4800 bits/sec transfer rate to a computer. The system is portable and introduces 'interactive graphics', which permits the creation and modification of models interactively. The CAD/CAM system has already produced designs for a large area space platform, a national transonic facility fan blade, and a laminar flow control wind tunnel model. Besides the design/drafting element analysis capability, CAD/CAM provides options to produce an automatic program tooling code to drive a numerically controlled (N/C) machine. Reductions in time for design, engineering, drawing, finite element modeling, and N/C machining will benefit productivity through reduced costs, fewer errors, and a wider range of configuration.

  6. A small inexpensive minicomputer system for speech research

    NASA Technical Reports Server (NTRS)

    Morris, C. F.

    1975-01-01

    A small but very effective minicomputer-based speech processing system costing just over 30,000 dollars is described here. The hardware and software comprising the system are discussed as well as immediate and future research applications.

  7. Automated System Marketplace 1993. Part I: Focus on Minicomputers.

    ERIC Educational Resources Information Center

    Bridge, Frank R.

    1993-01-01

    The first part of the annual automation marketplace survey examines minicomputer systems in libraries. Highlights include vendor consolidation and acquisitions; system interconnection; networked databases; products related to the Americans with Disabilities Act; multimedia; vendor installations worldwide; academic versus public library…

  8. Application of Minicomputers and Microcomputers to Information Handling.

    ERIC Educational Resources Information Center

    Griffiths, Jose-Marie

    This study assesses the application of both minicomputers and microcomputers to information-handling procedures and makes recommendations for automating such procedures, particularly in developing nations. The report is based on a survey of existing uses of small computing equipment in libraries, archives, and information centers which was…

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

    ERIC Educational Resources Information Center

    Turnblade, Richard C.

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

  10. An approach for physiological signal processing by laboratory minicomputer.

    PubMed

    Tompkins, W J

    1978-03-01

    Physiological signal-processing instrumentation including the digital oscilloscope is becoming more dependent upon the microprocessor. Minicomputer software has been developed which demonstrates data-processing approaches that should be considered for incorporation into the firmware of digital oscilloscopes. This core-resident software called DATAC operates in an interpretive mode and provides such features as digital signal editing, filtering, and basic processing including differentiation and integration. PMID:639498

  11. Recent Trends in Minicomputer-Based Integrated Learning Systems for Reading and Language Arts Instruction.

    ERIC Educational Resources Information Center

    Balajthy, Ernest

    This paper discusses minicomputer-based ILSs (integrated learning systems), i.e., computer-based systems of hardware and software. An example of a minicomputer-based system in a school district (a composite of several actual districts) considers hardware, staffing, scheduling, reactions, problems, and training for a subskill-oriented reading…

  12. A minicomputer system for display and rate analysis in vectorcardiography.

    PubMed

    Fellström, B; Nordgren, L; Antoni, L

    1978-09-01

    A system has been constructed for recording vectorcardiographic signal with a FM taperecorder. Off-line AD-conversion and analysis of rates and magnitudes of partial vectors are made with a minicomputer. The reason for studying particularly initial vectorrates is that according to our hypothesis these contain valuable information for classification of certain cardiac arrythmias according to supraventricular or ventricular impulse focus. Preliminary results confirm the hypothesis. In vectorcardiography one difficulty is to give an easily comprehensible presentation of the vectorloop. In this study a method for '3-dimensional' display has been developed, using a graphic display processor and varying intensities of the beam. The system is to a high degree man-machine interactive. PMID:755604

  13. Powerful Hardware/Software Architecture For A Minicomputer-Based Interactive Image Processing System

    NASA Astrophysics Data System (ADS)

    Mannos, James L.

    1982-07-01

    The successful application of modern digital image processing techniques in many areas depends strongly on the degree of interactivity and throughput provided by the hardware and software architectures of the image processing system being used. Recognizing this fact, designs for digital image processing systems have evolved from a first generation based on the use of batch processing and large "mainframe" computers, to a second generation based on dedicated minicomputers, and recently to a third generation based on the combination of a "super-minicomputer" with commercially available array and special purpose processors. This paper describes a particularly powerful third generation system under development which has been designed with high throughput and interactivity as a prime consideration.

  14. Smithsonian Astrophysical Observatory's minicomputer vs. the laser. [computer predictions for laser tracking stations

    NASA Technical Reports Server (NTRS)

    Cherniack, J. R.

    1973-01-01

    Review of some of the problems encountered in replacing a CDC 6400, that was used for supplying a network of laser tracking stations with predictions, by an 8K Data General 1200 minicomputer with a teletype for I/O. Before the replacement, the predictions were expensive to compute and to transmit, and were clumsy logistically. The achieved improvements are described, along with every step it took to accomplish them, and the incurred costs.

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

    NASA Technical Reports Server (NTRS)

    Moseley, E. C.

    1974-01-01

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

  16. Prickett and Lonnquist aquifer simulation program for the Apple II minicomputer

    SciTech Connect

    Hull, L.C.

    1983-02-01

    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).

  17. A Minicomputer Based Scheme for Turbulence Measurements with Pulsed Doppler Ultrasound

    PubMed Central

    Craig, J. I.; Saxena, Vijay; Giddens, D. P.

    1979-01-01

    The present paper describes the design and performance of a digital-based Doppler signal processing system that is currently being used in hemodynamics research on arteriosclerosis. The major emphasis is on the development of the digital signal processing technique and its implementation in a small but powerful minicomputer. The work reported on here is part of a larger ongoing effort that the authors are undertaking to study the structure of turbulence in blood flow and its relation to arteriosclerosis. Some of the techniques and instruments developed are felt to have a broad applicability to fluid mechanics and especially to pipe flow fluid mechanics.

  18. Using joined minicomputer-microcomputer systems for intricate sample and data manipulations

    SciTech Connect

    Meng, J.D.

    1980-09-01

    We have produced, over the past three years, three automated x-ray fluorescence based elemental analysis systems, that combine a minicomputer and a microcomputer to perform intricate sample and data manipulations. The mini-micro combination facilitates the reuse of sizable sections of hardware and programs for different x-ray analysis projects. Each of our systems has been a step closer to an optimum general solution. The combination reaps economic benefits throughout development, fabrication and maintenance, an important consideration for designers of custom-built, one-of-a-kind data analysis systems such as these.

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

    SciTech Connect

    Berg, D.E.

    1981-02-01

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

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

    NASA Technical Reports Server (NTRS)

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

    1983-01-01

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

  1. Ruggedized minicomputer hardware and software topics, 1981: Proceedings of the 4th ROLM MIL-SPEC Computer User's Group Conference

    NASA Technical Reports Server (NTRS)

    1981-01-01

    Presentations of a conference on the use of ruggedized minicomputers are summarized. The following topics are discussed: (1) the role of minicomputers in the development and/or certification of commercial or military airplanes in both the United States and Europe; (2) generalized software error detection techniques; (3) real time software development tools; (4) a redundancy management research tool for aircraft navigation/flight control sensors; (5) extended memory management techniques using a high order language; and (6) some comments on establishing a system maintenance scheme. Copies of presentation slides are also included.

  2. A minicomputer system for analyzing and reporting pilot plant fermentor data

    SciTech Connect

    Bowksi, L.; Perley, C.R.; West, J.M.

    1983-05-01

    In 1979, a minicomputer system was developed for Hoffmann-La Roche by ABEC, Inc. for the purpose of achieving on-line analysis and reporting of data from 16 70-L pilot-plant fermentators (New Brunswick Scientific Co.). The system consists of a PDP 11/60 computer with 96K core capacity, two RL01 disk drives, two RX01 floppy-disk drives, LA-36 DECwriter terminal, Tektronix CRT, and Versatec printer plotter. DEC, PDP, RSX, RL01, RX01, LA-36, and DECwriter are trademarks of Digital Equipment Corporation. The computer software comprises three distinct groups of programs. RSX-11M is a disk-based operating system that allows quick response to realtime events, such as process monitoring and data acquisition, while carrying out less time-dependent activities, such as program development and graphical output. The AIM (Biles, Inc.) system is used to acquire and convert the voltage signals produced by pilot-plant instrumentation into engineering units. Analysis and graphical output are executed by ABEC and Versatec supplied programs. The most beneficial task performed by the computer is the production of graphical output of a variety of measured and analyzed data. This has led to an increase in personnel productiv ity and design of more meaningful experiments. An ancillary function of the system is to pick up data logged by a PDP 11/03 computer from a remote fermentation production plant by means of a MODEM interfaced communication link. Production data are analyzed and presented in a form dentical with pilot-plant data. The experience with the system is discussed in this article.

  3. A minicomputer system for analyzing and reporting pilot plant fermentor data.

    PubMed

    Bowski, L; Perley, C R; West, J M

    1983-05-01

    In 1979, a minicomputer system was developed for Hoffmann-La Roche by ABEC, Inc. for the purpose of achieving on-line analysis and reporting of data from 16 70-L pilot-plant fermentors (New Brunswick Scientific Co.). The system consists of a PDP 11/60 computer with 96K core capacity, two RL01 disk drives, two RX01 floppy-disk drives, LA-36 DECwriter terminal, Tektronix CRT, and Versatec printer plotter. DEC, PDP, RSX, RL01, RX01, LA-36, and DECwriter are trademarks of Digital Equipment Corporation. The computer software comprises three distinct groups of programs. RSX-11M is a disk-based operating system that allows quick response to realtime events, such as process monitoring and data acquisition, while carrying out less time-dependent activities, such as program development and graphical output. The AIM (Biles, Inc.) system is used to acquire and convert the voltage signals produced by pilot-plant instrumentation into engineering units. Analysis and graphical output are executed by ABEC and Versatec supplied programs. The most beneficial task performed by the computer is the production of graphical output of a variety of measured and analyzed data. This has led to an increase in personnel productivity and design of more meaningful experiments. An ancillary function of the system is to pick up data logged by a PDP 11/03 computer from a remote fermentation production plant by means of a MODEM interfaced communication link. Production data are analyzed and presented in a form identical with pilot-plant data. The experience with the system is discussed in this article. PMID:18548757

  4. Applications of Minicomputers to Library and Related Problems. Papers Presented at the 1974 Clinic on Library Applications of Data Processing, April 28-May 1, 1974.

    ERIC Educational Resources Information Center

    Lancaster, F. Wilfrid, Ed.

    More than 100 representatives from various types of libraries attended a clinic on the current and future applications of minicomputers in library operations. Among the library-related problems considered were: (1) circulation and control, (2) cataloging, (3) education and training, (4) information retrieval, (5) acquisitions, and (6) serials…

  5. Application of a ground based minicomputer system for real time, closed loop control of remotely piloted aircraft models used in stall/spin research

    NASA Technical Reports Server (NTRS)

    Montoya, R. J.; Jai, A. R.

    1979-01-01

    The paper describes a minicomputer-based, real-time closed loop remote control system at NASA Langley outdoor facility which is used to determine the stall/departure/spin characteristics of high-performance aircraft. The experiments are conducted with 15% dynamically scaled, unpowered models that are dropped from 3000 m and ground controlled. The effects of time delays and sampling rates on the stability of the control system and the selection of digital algorithms to meet frequency response and real time constraints are examined. Also described is the implementation of the modular software for the flexible programming of multi-axis control laws.

  6. Comparison of seven performance measures in a time-delayed manipulation task. [with Rancho arm using minicomputer-based data taker

    NASA Technical Reports Server (NTRS)

    Hill, J. W.

    1976-01-01

    Real-time performance data was collected during a pick-up task carried out with a Rancho master-slave manipulator using a minicomputer-based data taker. In addition to the usual task-time measurements, computer algorithms to integrate the energy consumed and to count and time the number of moves were implemented. In addition to these measures, several derived measures such as the fraction of time moving (MRATIO) and mean time per move (MBAR) were obtained in an off-line analysis. Preliminary results of the time delay experiment indicate that two new measures, MRATIO and MBAR, are almost an order of magnitude more sensitive than task time, the conventional measure, in determining performance changes with transmission delays in the range from 0.0 to 1.0s.

  7. 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

    Bentley, Ernest, Ed.

    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…

  8. Educational Time-Sharing on a Minicomputer.

    ERIC Educational Resources Information Center

    Tidball, Charles S.; Bon, Bruce B.

    A multi-language, time-sharing system (MTS-12) has been developed for the PDP-12, a Digital Equipment Corporation laboratory computer. This low-cost, core-resident system features program storage on LINC tape (3/4" magnetic tape on a 4" reel), access to the high-level interpreted FOCAL language, and a special variable storage in the user buffer…

  9. Where Will the Minicomputer Lead Us?

    ERIC Educational Resources Information Center

    Leeson, Marjorie M.

    1975-01-01

    The responsibility of individuals working with computers both the mini and the maxi, must not only be envisioned but must also be accepted as one of the greatest challenges ever to face mankind. (Author)

  10. Simulation of obstacle detection scheme for Mars terrain using minicomputer

    NASA Technical Reports Server (NTRS)

    Leung, K. L.; Shen, C. N.

    1976-01-01

    Simulation for detection of obstacles on Martian terrain by a laser rangefinder mounted on an autonomous roving vehicle is achieved by a rapid estimation scheme on a computer with IDIIOM display. Near and far edges of pyramids and hemispherical craters or boulders can be recognized if the obstacles are more than about 15 m from the laser rangefinder and the noise standard deviation is less than about 10 cm. If these conditions are not met the rapid estimation scheme can still detect the top edge of a boulder and the near edge of a crater. The scheme is considered equivalent or better than an earlier (Reed, Sanyal, and Shen, 1974) four-directional Laplacian method, but requires slightly more computation.

  11. Minicomputers in the Teaching Laboratory - An Example from Physics.

    ERIC Educational Resources Information Center

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

    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.…

  12. Linking of the mini-computer Electronik-100I and NR-9821A

    NASA Technical Reports Server (NTRS)

    Zubkov, B. V.; Khromov, V. N.

    1979-01-01

    The means of transmitting digital information from the computer E-100I to the desk top calculator NR-9821A with the help of an intermediate carrier of information (perforated tape) is described. The means of removal of information from the computer E-100I in a form which is understandable for the NR-9821A are given. Instructions for the use and programming of the transcription of information onto magnetic tape from the perforated tape and from the keyboard of the calculator are included.

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

    PubMed Central

    Bassingthwaighte, James B.

    2010-01-01

    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. PMID:3318590

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

    NASA Technical Reports Server (NTRS)

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

    1974-01-01

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

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

    NASA Technical Reports Server (NTRS)

    Maurer, W. D.

    1977-01-01

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

  16. Evoked potential analysis: on-line signal optimization using a mini-computer.

    PubMed

    Hartwell, J W; Erwin, C W

    1976-10-01

    An automated computer-based system is described for the analysis of evoked potentials. All procedures are carried out in real-time A small computer performs the following functions; timing of random stimulus presentation, rejection of artifact contaminated responses, collection of digital data, computation of averaged evoked responses, computation of the Wiener filter, storage of the filtered and unfiltered averages and display of the resultant averages. The Wiener filter as described by Walter (1969) and Doyle (1975) is used to improve the estimate of the evoked potential by discriminating against frequencies likely to be contaminated with noise. The defining equation for the Wiener filter states that information at any frequency is to be weighted by the ratio of the power known to be in the signal (response) at that frequency over the corresponding power known to be in both the signal (response) and the noise (background EEG) at the same frequency. The technique requires the computation of the Fourier transform for each response in order to produce the power spectra necessary for the Wiener filter. Earlier reports dealing with this technique have usee large computers to analyze the evoked potential data off-line. The system described here allows for greater routine utilization of this powerful technique and the concomitant automated rejection of artifact contaminated responses. Highly improved estimates of the evoked potential are resultant using a minimal number of stimuli. PMID:60229

  17. Remote hard copy. Volume 1. Programming manual. [Data General NOVA 3/D minicomputer with Versatec 1110A plotter

    SciTech Connect

    Simons, R.W.

    1980-03-01

    The application of various graphics languages and special control cards to create and route graphics files to the remote hard copy plotters is presented. Discussion and examples are given for using GCS, DISSPLA, and VTSCORS on the SCOPE 3.3, SCOPE 2, and NOS operating systems.

  18. A Devoted Mini-Computer System for the Management of Clinical and Laboratory Data in an Intensive Care Unit

    PubMed Central

    Shinozaki, Tamotsu; Deane, Robert S.; Mazuzan, John E.

    1982-01-01

    In order to handle a large amount of clinical, laboratory and physiological information in intensive care units, a prototype distributed computer system is used at the Medical Center Hospital of Vermont. The system enables us to do extra tasks without increasing clerical help, eg., a progress note for respiratory care, statistical data for unit management, computation of cardiac and pulmonary parameters, IV schedule for vasoactive drugs, daily compilation of TISS and APACHE scores, data collection for audits and special products. Special attention is paid to computer/user interaction.

  19. Algorithmization and programming of operator activities for parametric synthesis of speech using the CT-1 system controlled by the MERA 303 minicomputer

    NASA Astrophysics Data System (ADS)

    Ciarkowski, A.

    1983-08-01

    The System of Programmed Synthesizer Service is proposed as a means of automating operator functions achieved during parametric speech synthesis with the help of the synthesizing computer system COMPUTALKER CT-1. The characteristics of the proposed system are described, with emphasis on the collaboration between the synthesizer and other internal devices within the computer system. The various functions of the system are shown in the form of block programs corresponding to the different functions. Complete evaluation of the system will be possible only after long-term synthetic speech experiments are concluded.

  20. 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

    Waldo, R.W.

    1980-05-01

    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.

  1. Dead reckoner navigation project

    NASA Technical Reports Server (NTRS)

    Ellis, R.; Sweet, L.

    1981-01-01

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

  2. Computer program and user documentation medical data tape retrieval system

    NASA Technical Reports Server (NTRS)

    Anderson, J.

    1971-01-01

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

  3. Downsizing a database platform for increased performance and decreased costs

    SciTech Connect

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

    1993-06-01

    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.

  4. 14 CFR 217.10 - Instructions.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... Section 217.10 of 14 CFR Part 217—Instructions to Foreign Air Carriers for Reporting Traffic Data on Form... minicomputers) to report Schedule T-100(f) data. (i) Reporting medium. ADP data submission must be on IBM compatible disks. Carriers using mainframe or minicomputers shall download (transcribe) to the required...

  5. Solving Nonlinear Differential Equations in the Engineering Curriculum

    ERIC Educational Resources Information Center

    Auslander, David M.

    1977-01-01

    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)

  6. A dual method for maximum entropy restoration

    NASA Technical Reports Server (NTRS)

    Smith, C. B.

    1979-01-01

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

  7. Transcription of the Workshop on General Aviation Advanced Avionics Systems

    NASA Technical Reports Server (NTRS)

    Tashker, M. (Editor)

    1975-01-01

    Papers are presented dealing with the design of reliable, low cost, advanced avionics systems applicable to general aviation in the 1980's and beyond. Sensors, displays, integrated circuits, microprocessors, and minicomputers are among the topics discussed.

  8. Automated chromosome analysis

    NASA Technical Reports Server (NTRS)

    Castleman, K. R.; Frieden, H. J.; Johnson, E. T.; Rennie, P. A.; Wall, R. J.

    1979-01-01

    Minicomputer-controlled system automatically prepares and analyses blood samples and displays karyotype in pictorial form as primary output. System accuracy is assured by operator interaction at key points during process. System can process up to 576 specimens per day.

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

    ERIC Educational Resources Information Center

    Hendricks, Donald D.; Manino, Glenn

    1987-01-01

    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)

  10. Cooperative processing data bases

    NASA Technical Reports Server (NTRS)

    Hasta, Juzar

    1991-01-01

    Cooperative processing for the 1990's using client-server technology is addressed. The main theme is concepts of downsizing from mainframes and minicomputers to workstations on a local area network (LAN). This document is presented in view graph form.

  11. Computer Assisted Dating of Gestation and Evaluation of Fetal Growth by Ultrasound

    PubMed Central

    Hansberry, Patricia A.; Simon, Nicolas V.; Sellers, Edgar B.

    1985-01-01

    York Hospital has developed a computerized system to calculate gestational age and evaluate fetal growth using measurements obtained from ultrasound scans. The system resides on a minicomputer which also accomodates a patient master file and other medical data bases.

  12. Microcomputer Backup to Online Circulation.

    ERIC Educational Resources Information Center

    Intner, Sheila

    1981-01-01

    Describes the usage and advantages of microcomputers as an alternative to manual processing when the Great Neck Library minicomputer-based automated circulation system goes down for maintenance or repair. (RAA)

  13. Design and performance of a large vocabulary discrete word recognition system. Volume 2: Appendixes. [flow charts and users manual

    NASA Technical Reports Server (NTRS)

    1973-01-01

    The users manual for the word recognition computer program contains flow charts of the logical diagram, the memory map for templates, the speech analyzer card arrangement, minicomputer input/output routines, and assembly language program listings.

  14. Electron Optics Cannot Be Taught through Computation?

    ERIC Educational Resources Information Center

    van der Merwe, J. P.

    1980-01-01

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

  15. Ensuring flat cuts in longwall mining

    NASA Technical Reports Server (NTRS)

    Campbell, R. A.; Currie, J. R.; Deaton, E. T.; Kissel, R. R.

    1979-01-01

    Minicomputer-controlled towed vehicle automatically determines flatness of wall of coal or other mineral as it is being cut by mining machine and allows machine operator to correct cut as necessary. Vehicle is used for longwall mining.

  16. Turnkey CAD/CAM selection and evaluation

    NASA Technical Reports Server (NTRS)

    Moody, T.

    1980-01-01

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

  17. Development and application of an interferometric system for measuring crack displacements

    NASA Technical Reports Server (NTRS)

    Sharpe, W. N., Jr.

    1976-01-01

    The development of the first version of a minicomputer controlled system that converts the fringe pattern motion into a voltage output proportional to displacement is presented. Details of the instrument and the calibration tests are included.

  18. Precise Determination of the Absorption Maximum in Wide Bands

    ERIC Educational Resources Information Center

    Eriksson, Karl-Hugo; And Others

    1977-01-01

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

  19. The revolution in data gathering systems

    NASA Technical Reports Server (NTRS)

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

    1975-01-01

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

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

    SciTech Connect

    Downey, N.J.

    1994-12-14

    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.

  1. MINIS: Multipurpose Interactive NASA Information System

    NASA Technical Reports Server (NTRS)

    1976-01-01

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

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

    USGS Publications Warehouse

    Stacey, J.S.; Hope, J.

    1975-01-01

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

  3. Study of systems and techniques for data base management

    NASA Technical Reports Server (NTRS)

    1976-01-01

    Data management areas were studied to identify pertinent problems and issues that will affect future NASA data users in terms of performance and cost. Specific topics discussed include the identifications of potential NASA data users other than those normally discussed, consideration affecting the clustering of minicomputers, low cost computer system for information retrieval and analysis, the testing of minicomputer based data base management systems, ongoing work related to the use of dedicated systems for data base management, and the problems of data interchange among a community of NASA data users.

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

    NASA Astrophysics Data System (ADS)

    Fang, R. C.

    1981-08-01

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

  5. Computer Program and User Documentation Medical Data Input System

    NASA Technical Reports Server (NTRS)

    Anderson, J.

    1971-01-01

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

  6. Design of a microprocessor-based Control, Interface and Monitoring (CIM unit for turbine engine controls research

    NASA Technical Reports Server (NTRS)

    Delaat, J. C.; Soeder, J. F.

    1983-01-01

    High speed minicomputers were used in the past to implement advanced digital control algorithms for turbine engines. These minicomputers are typically large and expensive. It is desirable for a number of reasons to use microprocessor-based systems for future controls research. They are relatively compact, inexpensive, and are representative of the hardware that would be used for actual engine-mounted controls. The Control, Interface, and Monitoring Unit (CIM) contains a microprocessor-based controls computer, necessary interface hardware and a system to monitor while it is running an engine. It is presently being used to evaluate an advanced turbofan engine control algorithm.

  7. Design and implementation of a simple nuclear power plant simulator

    NASA Astrophysics Data System (ADS)

    Miller, William H.

    1983-02-01

    A simple PWR nuclear power plant simulator has been designed and implemented on a minicomputer system. The system is intended for students use in understanding the power operation of a nuclear power plant. A PDP-11 minicomputer calculates reactor parameters in real time, uses a graphics terminal to display the results and a keyboard and joystick for control functions. Plant parameters calculated by the model include the core reactivity (based upon control rod positions, soluble boron concentration and reactivity feedback effects), the total core power, the axial core power distribution, the temperature and pressure in the primary and secondary coolant loops, etc.

  8. A simulation approach to MIL-STD-1553 Multiplex Bus interfacing

    NASA Astrophysics Data System (ADS)

    Lawson, R. J.; Murray, J.

    The technique developed for interfacing a 32 bit minicomputer to the MIL-STD-1553 Avionics Multiplex Bus (Mux Bus) in the F/A-18 Part Task Trainer is discussed. It is noted that the capability of access to the Mux Bus through a minicomputer provides the means of emulating any aircraft system the mission computer interfaces to in the aircraft. The capability of emulating the mission computer also exists for simulating real aircraft systems. The technique for recognizing bus requests for systems data required for simulation and responding to these requests within the timing constraints of 1553 is described, and details of bus operation specified by 1553 are given.

  9. Characteristics of the TRISTAN control computer network

    NASA Astrophysics Data System (ADS)

    Kurokawa, Shin-ichi; Akiyama, Atsuyoshi; Katoh, Tadahiko; Kikutani, Eiji; Koiso, Haruyo; Oide, Katsunobu; Shinomoto, Manabu; Kurihara, Michio; Abe, Ken-ichi

    1986-06-01

    Twenty-four minicomputers forming an N-to- N token-ring network control the TRISTAN accelerator complex. The computers are linked by optical fiber cables with 10 Mbps transmission speed. The software system is based on NODAL, a multicomputer interpretive language developed at the CERN SPS. The high-level services offered to the users of the network are remote execution by the EXEC, EXEC-P and IMEX commands of NODAL and uniform file access throughout the system. The network software was designed to achieve the fast response of the EXEC command. The performance of the network is also reported. Tasks that overload the minicomputers are processed on the KEK central computers. One minicomputer in the network serves as a gateway to KEKNET, which connects the minicomputer network and the central computers. The communication with the central computers is managed within the framework of the KEK NODAL system. NODAL programs communicate with the central computers calling NODAL functions; functions for exchanging data between a data set on the central computers and a NODAL variable, submitting a batch job to the central computers, checking the status of the submitted job, etc. are prepared.

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

    ERIC Educational Resources Information Center

    Hughey, Aaron W.; Manco, Charlene M.

    2012-01-01

    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…

  11. From Connectivity to Interoperability.

    ERIC Educational Resources Information Center

    Moressi, William J.; McFadden, C. Brown

    1989-01-01

    The Academic Computing Center at Winthrop College has gone beyond simple connectivity in linking its three local area networks to each other and the campus minicomputer. The environmental impact of the installation of bridges and gateways on systems, personnel, and end users is described. (MLW)

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

    ERIC Educational Resources Information Center

    Yost, Michael; Bremner, Fred

    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…

  13. An Instrument Simulator for Use in Computer Interfacing Laboratories.

    ERIC Educational Resources Information Center

    Wohltjen, Henry; Dessy, Raymond

    1979-01-01

    The design and use of an instrument simulator is described. Used for student laboratory experiments illustrating the use of mini-computers, it can provide, at very low cost, a repetitive, repeatable output to duplicate the readout of various instruments such as electrochemical experiments, mass spectrometers, pulsed magnetic experiments,…

  14. Technology in Libraries: 1960-2000.

    ERIC Educational Resources Information Center

    Martin, Susan K.

    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 College

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

    ERIC Educational Resources Information Center

    Staker, Heather

    2011-01-01

    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."…

  16. PRIME Networking at the University of Arizona.

    ERIC Educational Resources Information Center

    Edgar, Joseph L.

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

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

    ERIC Educational Resources Information Center

    Anderson, Philip; Tushman, Michael L.

    1990-01-01

    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…

  18. Modern programming language

    NASA Technical Reports Server (NTRS)

    Feldman, G. H.; Johnson, J. A.

    1980-01-01

    Structural-programming language is especially-tailored for producing assembly language programs for MODCOMP II and IV mini-computes. Modern programming language consists of set of simple and powerful control structures that include sequencing alternative selection, looping, sub-module linking, comment insertion, statement continuation, and compilation termination capabilities.

  19. IPCS user's manual

    SciTech Connect

    McGoldrick, P.R.

    1980-12-11

    The Interprocess Communications System (IPCS) was written to provide a virtual machine upon which the Supervisory Control and Diagnostic System (SCDS) for the Mirror Fusion Test Facility (MFTF) could be built. The hardware upon which the IPCS runs consists of nine minicomputers sharing some common memory.

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

    ERIC Educational Resources Information Center

    Rosenberg, Jason B.; Borgman, Christine L.

    1991-01-01

    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)…

  1. Operating manual for the RRL 8 channel data logger

    NASA Technical Reports Server (NTRS)

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

    1979-01-01

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

  2. The Administratively Effective School District: The Role of the Computer.

    ERIC Educational Resources Information Center

    Libonate, George A., Jr.; Hughes, Jonathan T.

    1982-01-01

    To support the position that the use of computers can make educational administration more cost-effective, the minicomputer-based information system in the Ridgeway Public School District in New Jersey is described. A model of the information system is included. (JJD)

  3. Computer Support of Cardiovascular Surgical Registries*

    PubMed Central

    Covvey, H.D.; MacGregor, D.C.; Smardon, S.; Wigle, E.D.

    1978-01-01

    In support of our services and research goals we have developed computer-based systems to register and follow-up aorto-coronary bypass, prosthetic valve and pacemaker patients. We have used a minicomputer database management system which has software facilities which allow it to flexibly handle evolving needs.

  4. Tailor-Made Teaching through TICCIT.

    ERIC Educational Resources Information Center

    Rappaport, Wanda; Olenbush, Elizabeth

    1975-01-01

    Time-shared, Interactive, Computer-Controlled Information Television (TICCIT) is a computer-based system of instruction designed to provide low-cost, high-quality education that is completely individualized. Using inexpensive minicomputers, color television sets, and typewriter-like keyboards, TICCIT can serve as many as 128 students…

  5. The Use of a Microcomputer Based Array Processor for Real Time Laser Velocimeter Data Processing

    NASA Technical Reports Server (NTRS)

    Meyers, James F.

    1990-01-01

    The application of an array processor to laser velocimeter data processing is presented. The hardware is described along with the method of parallel programming required by the array processor. A portion of the data processing program is described in detail. The increase in computational speed of a microcomputer equipped with an array processor is illustrated by comparative testing with a minicomputer.

  6. Microprocessors in U.S. Electrical Engineering Departments, 1974-1975.

    ERIC Educational Resources Information Center

    Sloan, M. E.

    Drawn from a survey of engineering departments known to be teaching microprocessor courses, this paper shows that the adoption of microprocessors by Electrical Engineering Departments has been rapid compared with their adoption of minicomputers. The types of courses that are being taught can be categorized as: surveys of microprocessors, intensive…

  7. An Experimental CMI System on the PDP 11/20.

    ERIC Educational Resources Information Center

    Espeland, L. Roger; Walker, Gerald S.

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

  8. Cloud Computing and the Power to Choose

    ERIC Educational Resources Information Center

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

    2010-01-01

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

  9. A practical Hadamard transform spectrometer for astronomical application

    NASA Technical Reports Server (NTRS)

    Tai, M. H.

    1977-01-01

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

  10. A practical multi-spectrum Hadamard Transform Spectrometer

    NASA Technical Reports Server (NTRS)

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

    1975-01-01

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

  11. Technological Discontinuities and Organizational Environments.

    ERIC Educational Resources Information Center

    Tushman, Michael L.; Anderson, Philip

    1986-01-01

    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;

  12. A distributed data base management capability for the deep space network

    NASA Technical Reports Server (NTRS)

    Bryan, A. I.

    1976-01-01

    The Configuration Control and Audit Assembly (CCA) is reported that has been designed to provide a distributed data base management capability for the DSN. The CCA utilizes capabilities provided by the DSN standard minicomputer and the DSN standard nonreal time high level management oriented programming language, MBASIC. The characteristics of the CCA for the first phase of implementation are described.

  13. Technological Discontinuities and Organizational Environments.

    ERIC Educational Resources Information Center

    Tushman, Michael L.; Anderson, Philip

    1986-01-01

    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;…

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

    ERIC Educational Resources Information Center

    Nee, John G.; Kare, Audhut P.

    1987-01-01

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

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

    ERIC Educational Resources Information Center

    Black, John B.

    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

  16. Interactive initialization of heat flux parameters for numerical models using satellite temperature measurements

    NASA Technical Reports Server (NTRS)

    Carlson, T. N. (Principal Investigator)

    1982-01-01

    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 images, most of them of the State College area, was prepared.

  17. Evolution, Nature, Uses and Issues in the Creation of Local School District Comprehensive Information Systems.

    ERIC Educational Resources Information Center

    Hathaway, Walter E.

    Efficient and convenient comprehensive information systems, long kept from coming into being by a variety of obstacles, are now made possible by the concept of distributive processing and the technology of micro- and mini-computer networks. Such systems can individualize instruction, group students efficiently, cut administrative costs, streamline…

  18. Mini or Maxi: Which Computer Is Right for You?

    ERIC Educational Resources Information Center

    Perry, Nancy N.

    1979-01-01

    Selecting a type of computer system for instructional purposes does not depend upon the kind of instruction to be provided but on the features of the maxi- and minicomputer systems themselves. The features of each system must be considered in the context in which it will be used. (Author/CMV)

  19. Learning Technologies Prototype Classroom Project

    ERIC Educational Resources Information Center

    Miller, Jo; Janovsky, Kathy

    2003-01-01

    During the 2001 summer holidays, the main Social Science classroom at St Ursula's College, a Catholic Secondary Girls' school of 740 pupils in Toowomba, Queensland was renovated. A mini-computer laboratory of four nests of computers was incorporated into the traditional teaching space. (See Diagram 1 and photograph). This room was named the…

  20. Cloud Computing and the Power to Choose

    ERIC Educational Resources Information Center

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

    2010-01-01

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

  1. Integrated library systems.

    PubMed Central

    Goldstein, C M

    1983-01-01

    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

  2. Radioactivities in returned lunar materials and in meteorites

    NASA Technical Reports Server (NTRS)

    Fireman, E. L.

    1984-01-01

    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.

  3. Automatic processing system for shadowgraph and interference patterns

    NASA Technical Reports Server (NTRS)

    Vereninov, I. A.; Lazarev, V. D.; Popov, S. S.; Tarasov, V. S.

    1987-01-01

    The design and operation of an automatic system for the processing of shadowgraph and interference images are described. The system includes a two-coordinate processing table with an optical system for the projection of transparent images onto the photodetector, an image filter in the photodetector field, and a device for controlling the movement of the table and transmitting information to the minicomputer.

  4. Introduction to acoustic emission

    NASA Technical Reports Server (NTRS)

    Possa, G.

    1983-01-01

    Typical acoustic emission signal characteristics are described and techniques which localize the signal source by processing the acoustic delay data from multiple sensors are discussed. The instrumentation, which includes sensors, amplifiers, pulse counters, a minicomputer and output devices is examined. Applications are reviewed.

  5. Design and Implementation of Instructional Computer Systems.

    ERIC Educational Resources Information Center

    Graczyk, Sandra L.

    1989-01-01

    Presents an input-process-output (IPO) model that can facilitate the design and implementation of instructional micro and minicomputer systems in school districts. A national survey of school districts with outstanding computer systems is described, a systems approach to develop the model is explained, and evaluation of the system is discussed.…

  6. Operations manual for the data acquisition and reduction system, Shock Laboratory Test Facility

    SciTech Connect

    Smith, E.L.

    1985-08-01

    This manual describes the operation of the new minicomputer-based data acquisition and reduction system for the Shock Laboratory Test Facility at Sandia National Laboratories. The system provides faster turnaround time and easier operation because of the availability of computer access at each test location.

  7. 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...

  8. 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

    Association for the Development of Computer-based Instructional Systems.

    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…

  9. A Summary and Commentary on D. and S. Premack's "Original Intelligence"

    ERIC Educational Resources Information Center

    Greer, R. Douglas

    2006-01-01

    Some evolutionary cognitive and developmental psychologists propose that the human mind consists of domain-specific modules. These are characterized as self-contained "mini-computers" that process information of a certain kind. In their book, "Original Intelligence," the Premacks set out to provide a synthesis of evidence from various fields in…

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

    ERIC Educational Resources Information Center

    Ya-chun, Lian

    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…

  11. The prediction of acoustical particle motion using an efficient polynomial curve fit procedure

    NASA Technical Reports Server (NTRS)

    Marshall, S. E.; Bernhard, R.

    1984-01-01

    A procedure is examined whereby the acoustic model parameters, natural frequencies and mode shapes, in the cavities of transportation vehicles are determined experimentally. The acoustic model shapes are described in terms of the particle motion. The acoustic modal analysis procedure is tailored to existing minicomputer based spectral analysis systems.

  12. A Distributed Processing Approach to Payroll Time Reporting for a Large School District.

    ERIC Educational Resources Information Center

    Freeman, Raoul J.

    1983-01-01

    Describes a system for payroll reporting from geographically disparate locations in which data is entered, edited, and verified locally on minicomputers and then uploaded to a central computer for the standard payroll process. Communications and hardware, time-reporting software, data input techniques, system implementation, and its advantages are…

  13. Commonalities in Pedagogy Situating Cell Phone Use in the Classroom

    ERIC Educational Resources Information Center

    Abend, Laurie Lafer

    2013-01-01

    Technology has become embedded in all aspects of students' lives as they increasingly rely on mobile technology devices such as cell phones to access and share information. Cell phones function as portable, affordable, and ubiquitous mini-computers, yet few teachers have leveraged the benefits of cell phone technology for teaching and learning…

  14. Mobile Computer-Assisted-Instruction in Rural New Mexico.

    ERIC Educational Resources Information Center

    Gittinger, Jack D., Jr.

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

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

    ERIC Educational Resources Information Center

    Cibbarelli, Pamela

    1996-01-01

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

  16. Distributed Administrative Management Information System (DAMIS).

    ERIC Educational Resources Information Center

    Juckiewicz, Robert; Kroculick, Joseph

    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…

  17. Computer Managed Instruction in Navy Training.

    ERIC Educational Resources Information Center

    Middleton, Morris G.; And Others

    An investigation was made of the feasibility of computer-managed instruction (CMI) for the Navy. Possibilities were examined regarding a centralized computer system for all Navy training, minicomputers for remote classes, and shipboard computers for on-board training. The general state of the art and feasibility of CMI were reviewed, alternative…

  18. Integrated Computer-Aided Drafting Instruction (ICADI).

    ERIC Educational Resources Information Center

    Chen, C. Y.; McCampbell, David H.

    Until recently, computer-aided drafting and design (CAD) systems were almost exclusively operated on mainframes or minicomputers and their cost prohibited many schools from offering CAD instruction. Today, many powerful personal computers are capable of performing the high-speed calculation and analysis required by the CAD application; however,…

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

    ERIC Educational Resources Information Center

    Yost, Michael; Bremner, Fred

    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

  20. The Local Area Network (LAN) and Library Automation.

    ERIC Educational Resources Information Center

    Farr, Rick C.

    1983-01-01

    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.…

  1. Atmospheric and Oceanographic Information Processing System (AOIPS) system description

    NASA Technical Reports Server (NTRS)

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

    1977-01-01

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

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

    ERIC Educational Resources Information Center

    Black, John B.

    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…

  3. Laboratory Automation for Physical Scientists.

    ERIC Educational Resources Information Center

    Stemple, Norman

    A university level course which uses minicomputers in laboratory data acquisition and experimental control is described. The majority of the students are chemistry seniors and graduate students; prerequisites are general physics and one semester of computer science or programing experience. The goals of the course, which is divided into 3 5-week…

  4. MODC2 procedures for assembly of MODCOMP-2 programs using the Sigma 5 assembler

    NASA Technical Reports Server (NTRS)

    Layland, J. W.

    1976-01-01

    A set of programs was written to enable the METASYMBOL macro-assembler of the Sigma 5 to assemble programs for an attached MODCOMP-2 minicomputer. This program set is a follow-on to previously developed program sets which facilitated assemblies for the PDP-11 and SDS-930.

  5. A High Resolution Graphic Input System for Interactive Graphic Display Terminals. Appendix B.

    ERIC Educational Resources Information Center

    Van Arsdall, Paul Jon

    The search for a satisfactory computer graphics input system led to this version of an analog sheet encoder which is transparent and requires no special probes. The goal of the research was to provide high resolution touch input capabilities for an experimental minicomputer based intelligent terminal system. The technique explored is compatible…

  6. Commonalities in Pedagogy Situating Cell Phone Use in the Classroom

    ERIC Educational Resources Information Center

    Abend, Laurie Lafer

    2013-01-01

    Technology has become embedded in all aspects of students' lives as they increasingly rely on mobile technology devices such as cell phones to access and share information. Cell phones function as portable, affordable, and ubiquitous mini-computers, yet few teachers have leveraged the benefits of cell phone technology for teaching and learning

  7. TICCIT Project.

    ERIC Educational Resources Information Center

    Anderson, Stephen J.

    This report describes the underlying premises, operations and the pilot implementation of TICCIT (Time-Shared Interactive Computer-Controlled Information by Television) system which aims to facilitate instruction and learner control via the combined use of mini-computers and color television. TICCIT courseware is organized in a hierarchical…

  8. Sun Series program for the REEDA System. [predicting orbital lifetime using sunspot values

    NASA Technical Reports Server (NTRS)

    Shankle, R. W.

    1980-01-01

    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 utilize various mathematical smoothing technique and perform statistical and graphical analysis of various solar activity data bases residing on the REEDA System.

  9. New starts in research and development, 1982

    NASA Technical Reports Server (NTRS)

    Grosson, J.

    1981-01-01

    An outline in slide form, of some areas of U.S. Navy research and development utilizing airborne minicomputers is presented. The following program considerations are addressed: (1) research and engineering management; (2) budgeting; (3) equipment specifications and construction materials; (4) computer applications; (5) technological capabilities, utilization, and transfer; and (6) military applications.

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

    NASA Technical Reports Server (NTRS)

    Debarrosaguirre, J. L. (Principal Investigator)

    1984-01-01

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

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

    ERIC Educational Resources Information Center

    White, James W.

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

  12. An inexpensive vehicle speed detector

    NASA Technical Reports Server (NTRS)

    Broussard, P., Jr.

    1973-01-01

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

  13. A Model or Designing School Computer Systems: Its Development and Application.

    ERIC Educational Resources Information Center

    Graczyk, Sandra L.

    1987-01-01

    Describes the creation of a comprehensive, research-based model of concepts and practices to guide planning and implementation of micro- and mini-computer systems in school districts. The model's strategic planning activities are summarized, along with general observations and future implications of the research involved. (MLH)

  14. An Overview of Computers in Education.

    ERIC Educational Resources Information Center

    vonFeldt, James R.

    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…

  15. The TRISTAN control system

    NASA Astrophysics Data System (ADS)

    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

    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.

  16. Computer Series, 51: Bits and Pieces, 20.

    ERIC Educational Resources Information Center

    Moore, John W., Ed.

    1984-01-01

    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

  17. Computer Series, 51: Bits and Pieces, 20.

    ERIC Educational Resources Information Center

    Moore, John W., Ed.

    1984-01-01

    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…

  18. COED Transactions, Vol. XI, No. 7 & 8, July/August 1979. A Miniature Automated Warehouse: A Laboratory Teaching Device.

    ERIC Educational Resources Information Center

    Mitchell, Eugene E., Ed.

    A do-it-yourself laboratory course in automated systems designed at the University of Florida is described. Using a working model of a warehouse interfaced with a minicomputer as a working laboratory, the student gains hands-on experience in operations programing and applications of scheduling, materials handling, and heuristic optimization. (BT)

  19. Industrial robots and robotics

    SciTech Connect

    Kafrissen, S.; Stephens, M.

    1984-01-01

    This book discusses the study of robotics. It provides information of hardware, software, applications and economics. Eleven chapters examine the following: Minicomputers, Microcomputers, and Microprocessors; The Servo-Control System; The Activators; Robot Vision Systems; and Robot Workcell Environments. Twelve appendices supplement the data.

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

    ERIC Educational Resources Information Center

    Homes, Edith

    1981-01-01

    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)

  1. Local Area Networks.

    ERIC Educational Resources Information Center

    Bullard, David

    1983-01-01

    The proliferation of word processors, micro- and minicomputer systems, and other digital office equipment is causing major design changes in existing networks. Local Area Networks (LANs) which have adequately served terminal users in the past must now be redesigned. Implementation at Clemson is described. (MLW)

  2. Escort: A data acquisition and display system to support research testing

    NASA Technical Reports Server (NTRS)

    Miller, R. L.

    1978-01-01

    Primarily designed to acquire data at steady state test conditions, the system can also monitor slow transients such as those generated in moving to a new test condition. The system configuration makes use of a microcomputer at the test site which acts as a communications multiplexer between the measurement and display devices and a centrally located minicomputer. A variety of measurement and display devices are supported using a modular approach. This allows each system to be configured with the proper combination of devices to meet the specific test requirements, while still leaving the option to add special interfaces when needed. Centralization of the minicomputer improves utilization through sharing. The creation of a pool of minis to provide data acquisition and display services to a variable number of running tests also offers other important advantages.

  3. Continuous fission-product monitor system at Oyster Creek. Final report

    SciTech Connect

    Collins, L.L.; Chulick, E.T.

    1980-10-01

    A continuous on-line fission product monitor has been installed at the Oyster Creek Nuclear Generating Station, Forked River, New Jersey. The on-line monitor is a minicomputer-controlled high-resolution gamma-ray spectrometer system. An intrinsic Ge detector scans a collimated sample line of coolant from one of the plant's recirculation loops. The minicomputer is a Nuclear Data 6620 system. Data were accumulated for the period from April 1979 through January 1980, the end of cycle 8 for the Oyster Creek plant. Accumulated spectra, an average of three a day, were stored on magnetic disk and subsequently analyzed for fisson products, Because of difficulties in measuring absolute detector efficiency, quantitative fission product concentrations in the coolant could not be determined. Data for iodine fission products are reported as a function of time. The data indicate the existence of fuel defects in the Oyster Creek core during cycle 8.

  4. Cactus

    SciTech Connect

    Sexton, R.L.

    1983-03-01

    The CACTUS project (computer-aided control, tracking, and updating system) was initiated by the Bendix Kansas City Division to address specific work-in-process problems encountered in a cable department. Since then, the project has been expanded to additional electrical manufacturing departments because of potential productivity gains from the system. The philosophy of CACTUS is to add an element of distributed data proessing to the centralized data processing system currently in use for control of work in process. Under this system, the existing chain of communications between the host computer and the CRT terminals in a department is severed. A mini-computer established in the department communicates directly with the central system, and departmental communication is then established with the mini-computer. The advantages, disadvantages, operation performance, and economics of the system are discussed.

  5. TDRSS data handling and management system study. Ground station systems for data handling and relay satellite control

    NASA Technical Reports Server (NTRS)

    1973-01-01

    Results of a two-phase study of the (Data Handling and Management System DHMS) are presented. An original baseline DHMS is described. Its estimated costs are presented in detail. The DHMS automates the Tracking and Data Relay Satellite System (TDRSS) ground station's functions and handles both the forward and return link user and relay satellite data passing through the station. Direction of the DHMS is effected via a TDRSS Operations Control Central (OCC) that is remotely located. A composite ground station system, a modified DHMS (MDHMS), was conceptually developed. The MDHMS performs both the DHMS and OCC functions. Configurations and costs are presented for systems using minicomputers and midicomputers. It is concluded that a MDHMS should be configured with a combination of the two computer types. The midicomputers provide the system's organizational direction and computational power, and the minicomputers (or interface processors) perform repetitive data handling functions that relieve the midicomputers of these burdensome tasks.

  6. A computer-aided design system geared toward conceptual design in a research environment. [for hypersonic vehicles

    NASA Technical Reports Server (NTRS)

    STACK S. H.

    1981-01-01

    A computer-aided design system has recently been developed specifically for the small research group environment. The system is implemented on a Prime 400 minicomputer linked with a CDC 6600 computer. The goal was to assign the minicomputer specific tasks, such as data input and graphics, thereby reserving the large mainframe computer for time-consuming analysis codes. The basic structure of the design system consists of GEMPAK, a computer code that generates detailed configuration geometry from a minimum of input; interface programs that reformat GEMPAK geometry for input to the analysis codes; and utility programs that simplify computer access and data interpretation. The working system has had a large positive impact on the quantity and quality of research performed by the originating group. This paper describes the system, the major factors that contributed to its particular form, and presents examples of its application.

  7. Optical computer switching network

    NASA Technical Reports Server (NTRS)

    Clymer, B.; Collins, S. A., Jr.

    1985-01-01

    The design for an optical switching system for minicomputers that uses an optical spatial light modulator such as a Hughes liquid crystal light valve is presented. The switching system is designed to connect 80 minicomputers coupled to the switching system by optical fibers. The system has two major parts: the connection system that connects the data lines by which the computers communicate via a two-dimensional optical matrix array and the control system that controls which computers are connected. The basic system, the matrix-based connecting system, and some of the optical components to be used are described. Finally, the details of the control system are given and illustrated with a discussion of timing.

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

    NASA Technical Reports Server (NTRS)

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

    1984-01-01

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

  9. Display-management system for MFTF

    SciTech Connect

    Nelson, D.O.

    1981-01-01

    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.

  10. Procedures for on-line detection of sensor and operating faults in solar energy systems

    SciTech Connect

    Duff, W.S.; Millard, R.A.

    1980-01-01

    Every 10 minutes, 100 channels of directly measured quantities, integrated and counted flows and fluxes, and calculated energy quantities from Colorado State University Solar House I are recorded on magnetic tape and passed on to a minicomputer with dual floppy disc, printer, and plotter. The magnetic tape output is processed in monthly blocks to provide detailed monthly, daily, and hourly reduced data summaries. The minicomputer is used to display real time operating data, print out hourly performance summaries, and collect statistics on sensor and operating system status. These statistics are then analyzed to detect possible sensor and operating faults in the system so they may be quickly recognized and corrected. The procedures that have been developed to perform these analyses are discussed, and their use and effectiveness under actual operating conditions is illustrated.

  11. Radiology capital asset management.

    PubMed

    Wagener, G N; Pridlides, A J

    1993-01-01

    Radiology administrators are expected not only to take on the ultimate accountability for meeting the needs and challenges of present day-to-day operations, but also to plan for the future. Computer Aided Facility Management (CAFM), as a tool, enables radiology managers to obtain up-to-date data to manage their services. Using Autocad on a unix-based minicomputer as the graphical base generator and integrating information from a MUMPS-based minicomputer, the CAFM process can define areas to be studied for productivity and life cycle costs. From an analysis of radiology service, management was able to make solid judgement calls for equipment replacement and facility project renovation to effectively manage radiology resources. PMID:10129807

  12. Two dimensional recursive digital filters for near real time image processing

    NASA Technical Reports Server (NTRS)

    Olson, D.; Sherrod, E.

    1980-01-01

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

  13. A flexible time recording and time correlation analysis system

    NASA Astrophysics Data System (ADS)

    Shenhav, Nathan J.; Leiferman, Gabriel; Segal, Yitzhak; Notea, Amos

    1983-02-01

    A system was developed to digitize and record the time intervals between detection event pulses, feed to its input channels from a detection device. The accumulated data is transferred continuously in real time to a dise through a PDP 11/34 minicomputer. Even though the system was designed for a specific scope, i.e., the comparative study of passive neutron nondestructive assay methods. It can be characterized by its features as a general purpose time series recorder. The time correlation analysis is performed by software after completion of the data accumulation. The digitizing clock period is selectable and any value, larger than a minimum of 100 ns may be selected. Bursts of up to 128 events with a frequency up to 10 MHz may be recorded. With the present recorder-minicomputer combination, the maximal average recording frequency is 40 kHz.

  14. Electroencephalographic Cartography. I. By means of mini- or microcomputers. Reliability and interest of this electrical non-invasive brain imagery.

    PubMed

    Etevenon, P; Gaches, J; Debouzy, C; Gueguen, B; Peron-Magnan, P

    1985-01-01

    We have recorded control subjects, neurological and psychiatric patients (n = 217 sequences recorded over both hemispheres). Minicomputers (HP Fourier analyzer, HP 1000) for spectral analysis provided 10 spectral parameters over 5 spectral frequency bands (delta, theta, alpha, beta 1, beta 2, raw EEG). For each recorded sequence, 90 EEG maps could be computed over both hemispheres. Topo-EEGs were stored in an EEG image data bank. An EEG mapping microcomputer system linked with a digital polygraph (Alvar Electronic, REEGA 2000) has been used simultaneously. White noises have been fed into both computers for testing spatial resolution. Ten topo-EEGs have been recorded in control subjects and patients. The microcomputer system has provided very reliable topographical results when compared to similar maps generated by the minicomputer. A common average reference has been used. First clinical applications have been studied (brain strokes, brain tumors). The method appears very reliable in comparison with CT scans. PMID:4033896

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

    NASA Technical Reports Server (NTRS)

    Barger, R. L.

    1980-01-01

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

  16. A Workstation-Based Inpatient Clinical System in the Johns Hopkins Hospital

    PubMed Central

    Schneider, Marvin; Tolchin, Stephen G.; Kahane, Stephen N.; Goldberg, Howard S.; Barta, Patrick

    1985-01-01

    The Johns Hopkins Hospital has initiated an ambitious program to apply modern technologies to the development of a new, comprehensive clinical information system. This system integrates many distinct functional subsystems using a local area network. One component of this system is a distributed inpatient clinical management system. This paper discusses a workstation-based design with minicomputer support. User interface requirements, system architecture, project plans and alternative approaches are discussed.

  17. The first international symposium on small mine economics and expansion

    SciTech Connect

    Not Available

    1981-01-01

    Papers are presented on the following topics: economic aspects of exploration and development of recoverable ore reserves; a geologic model for exploration for epithermal gold and silver deposits; selection of mining equipment; minicomputer applications; mill operation; cost of environmental compliance in USA; mine planning and development for a new uranium facility; small coal mines in FRG, China and USA; modularly constructed preparation plants for coal cleaning; private enterprise in the Mexican mining industry; and financing of small mining companies.

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

    NASA Astrophysics Data System (ADS)

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

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

  19. Forth system for coherent-scatter radar data acquisition and processing

    NASA Technical Reports Server (NTRS)

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

    1985-01-01

    A real time collection system was developed for the Urbana coherent scatter radar system. The new system, designed for use with a microcomputer, has several advantages over the old system implemented with a minicomputer. The software used to collect the data is described as well as the processing software used to analyze the data. In addition a magnetic tape format for coherent scatter data exchange is given.

  20. Locomotive Data Acquisition Package Phase II system development. Final report. Volume 1. System overview

    SciTech Connect

    Abbott, R.K.; Kirsten, F.A.; Mullen, D.R.; Sidman, S.B.; Miller, J.G.; Ng, L.S.; Scalise, D.T.

    1980-03-01

    An examination of the problems associated with railroad locomotive data acquisition is presented. The design of a minicomputer based locomotive data acquisition system is also presented. Special attention is placed on meeting the functional characteristics and environmental specifications required for the system. The system described consists of a magnetic tape digital data recorder, an ensemble of transducers, and analysis software. The system described is designed as a research tool. The environmental test program and the field test program are also described.

  1. A portable millisecond-integration-time photoelectric photometer.

    NASA Technical Reports Server (NTRS)

    Mcgraw, J. T.; Wells, D. C.; Wiant, J. R.

    1973-01-01

    Portable equipment for recording millisecond-integration-time photoelectric photometric data is described. Digital data are reliably recorded on standard 6.35 mm audio grade magnetic tape via a quadradial audio grade tape deck. The system is designed specifically for recording lunar occulations of stars, but the data recording technique is independent of the data source. Recovery of the data is made via minicomputer.

  2. A scanning laser rangefinder for a robotic vehicle

    NASA Technical Reports Server (NTRS)

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

    1977-01-01

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

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

    SciTech Connect

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

    1981-01-01

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

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

    USGS Publications Warehouse

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

    1983-01-01

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

  5. Smithsonian Astrophysical Observatory laser tracking systems

    NASA Technical Reports Server (NTRS)

    Pearlman, M. R.; Lanham, N. W.; Lehr, C. G.; Wohn, J.

    1977-01-01

    The four SAO laser satellite-ranging systems, located in Brazil, Peru, Australia, and Arizona, have been in operation for more than five years and have provided ranging data at accuracy levels of a meter or better. The paper examines system hardware (laser transmitter, the electronics, mount, photoreceiver, minicomputer, and station timing) and software (prediction program, calibration programs, and data handling and quick-look programs) and also considers calibration, station operation, and system performance.

  6. ART/Ada design project, phase 1: Project plan

    NASA Technical Reports Server (NTRS)

    Allen, Bradley P.

    1988-01-01

    The plan and schedule for Phase 1 of the Ada based ESBT Design Research Project is described. The main platform for the project is a DEC Ada compiler on VAX mini-computers and VAXstations running the Virtual Memory System (VMS) operating system. The Ada effort and lines of code are given in tabular form. A chart is given of the entire project life cycle.

  7. The application of charge-coupled device processors in automatic-control systems

    NASA Technical Reports Server (NTRS)

    Mcvey, E. S.; Parrish, E. A., Jr.

    1977-01-01

    The application of charge-coupled device (CCD) processors to automatic-control systems is suggested. CCD processors are a new form of semiconductor component with the unique ability to process sampled signals on an analog basis. Specific implementations of controllers are suggested for linear time-invariant, time-varying, and nonlinear systems. Typical processing time should be only a few microseconds. This form of technology may become competitive with microprocessors and minicomputers in addition to supplementing them.

  8. Development of computerized radioactive waste disposal system for BWR nuclear power plants

    SciTech Connect

    Niki, K.; Takada, T.; Watanabe, T.; Yamaguchi, T.

    1983-02-01

    A computerized radioactive waste disposal system has been developed with the main objectives of reduction of man-power, reduction of radioactive exposure, and improvement of waste disposal processing performances. The system is built around a high performance minicomputer and its main features are complete monitoring of the system utilizing color CRT displays and logging of the mass balance of the system. Operational experience of the system proved that radioactive waste disposal processing performances have been greatly improved by computerization.

  9. TMS communications hardware. Volume 1: Computer interfaces

    NASA Technical Reports Server (NTRS)

    Brown, J. S.; Weinrich, S. S.

    1979-01-01

    A prototpye coaxial cable bus communications system was designed to be used in the Trend Monitoring System (TMS) to connect intelligent graphics terminals (based around a Data General NOVA/3 computer) to a MODCOMP IV host minicomputer. The direct memory access (DMA) interfaces which were utilized for each of these computers are identified. It is shown that for the MODCOMP, an off-the-shell board was suitable, while for the NOVAs, custon interface circuitry was designed and implemented.

  10. TMS communications software. Volume 1: Computer interfaces

    NASA Technical Reports Server (NTRS)

    Brown, J. S.; Lenker, M. D.

    1979-01-01

    A prototype bus communications system, which is being used to support the Trend Monitoring System (TMS) as well as for evaluation of the bus concept is considered. Hardware and software interfaces to the MODCOMP and NOVA minicomputers are included. The system software required to drive the interfaces in each TMS computer is described. Documentation of other software for bus statistics monitoring and for transferring files across the bus is also included.

  11. TMS communications hardware. Volume 2: Bus interface unit

    NASA Technical Reports Server (NTRS)

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

    1979-01-01

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

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

    NASA Technical Reports Server (NTRS)

    Alley, P. L.

    1979-01-01

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

  13. Geometric assessment of image quality using digital image registration techniques

    NASA Technical Reports Server (NTRS)

    Tisdale, G. E.

    1976-01-01

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

  14. Computer aided interpretation of acid-base disorders.

    PubMed

    Pincé, H; Verberckmoes, R; Willems, J L

    1990-04-01

    This paper describes an expert system for the interpretation of acid-base disorders. The target users are residents in training in internal medicine, anaesthesia and intensive care medicine. The program is written in PROLOG and runs on a SUN 3/160 minicomputer. Evaluation of a learning set (N = 202) and a test set (N = 194) has proved that the system's accuracy is acceptable. As a result, the program has recently been put in routine clinical practice. PMID:2188911

  15. Processing PCM Data in Real Time

    NASA Technical Reports Server (NTRS)

    Wissink, T. L.

    1982-01-01

    Novel hardware configuration makes it possible for Space Shuttle launch processing system to monitor pulse-code-modulated data in real time. Using two microprogramable "option planes," incoming PCM data are monitored for changes at rate of one frame of data (80 16-bit words) every 10 milliseconds. Real-time PCM processor utilizes CPU in mini-computer and CPU's in two option planes.

  16. Data base design for a worldwide multicrop information system

    NASA Technical Reports Server (NTRS)

    Driggers, W. G.; Downs, J. M.; Hickman, J. R.; Packard, R. L. (Principal Investigator)

    1979-01-01

    A description of the USDA Application Test System data base design approach and resources is presented. The data is described in detail by category, with emphasis on those characteristics which influenced the design most. It was concluded that the use of a generalized data base in support of crop assessment is a sound concept. The IDMS11 minicomputer base system is recommended for this purpose.

  17. Automation of the process of speech signal segmentation in an analogic-numeric system

    NASA Astrophysics Data System (ADS)

    Domagala, P.

    Eighteen Polish words uttered by 12 voices (7 male and 5 female) were taperecorded and analyzed by computer. Numeric analysis of the dynamic spectrum was implemented using an algorithm composed of simple logical sentences on the MERA 303 minicomputer. Compared with the visual segmentation achieved in the spectrographic computer images, correctness of segmentation reached a level of about 94 percent. No differences were found in quality of segmentation between male and female utterances.

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

    NASA Astrophysics Data System (ADS)

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

    1983-08-01

    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.

  19. The Johns Hopkins radiology reporting system.

    PubMed

    Wheeler, P S; Simborg, D W; Gitlin, J N

    1976-05-01

    Radiologists can comprehensively report diagnostic radiographs by computer with a speed approaching that of dictation. This is the main mode of radiographic reporting used at the Johns Hopkins Hospital. Support functions include information storage, retrieval, statistics, and billing. Costs are comparable to stenography. The system can be run from a large time-sharing computer or dedicated minicomputer. A commercial stand-alone version will soon be available. PMID:772749

  20. Topics in programmable automation. [for materials handling, inspection, and assembly

    NASA Technical Reports Server (NTRS)

    Rosen, C. A.

    1975-01-01

    Topics explored in the development of integrated programmable automation systems include: numerically controlled and computer controlled machining; machine intelligence and the emulation of human-like capabilities; large scale semiconductor integration technology applications; and sensor technology for asynchronous local computation without burdening the executive minicomputer which controls the whole system. The role and development of training aids, and the potential application of these aids to augmented teleoperator systems are discussed.

  1. Simple digital pulse-programing circuit

    NASA Technical Reports Server (NTRS)

    Langston, J. L.

    1979-01-01

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

  2. Flight simulators. Part 1: Present situation and trends. Part 2: Implications for training

    NASA Technical Reports Server (NTRS)

    Hass, D.; Volk, W.

    1977-01-01

    The present situation and developments in the technology of flight simulators based on digital computers are evaluated from the standpoint of training airline flight crews. Areas covered are minicomputers and their advantages in terms of cost, space and time savings, software data packets, motion simulation, visual simulation and instructor aids. The division of training time between aircraft and simulator training and the possible advantages from increased use of simulators are evaluated.

  3. Laser velocimeter (autocovariance) buffer interface

    NASA Technical Reports Server (NTRS)

    Clemmons, J. I., Jr.

    1981-01-01

    A laser velocimeter (autocovariance) buffer interface (LVABI) was developed to serve as the interface between three laser velocimeter high speed burst counters and a minicomputer. A functional description is presented of the instrument and its unique features which allow the studies of flow velocity vector analysis, turbulence power spectra, and conditional sampling of other phenomena. Typical applications of the laser velocimeter using the LVABI are presented to illustrate its various capabilities.

  4. The use of computers in dairy herd health program: A review

    PubMed Central

    Lissemore, Kerry D.

    1989-01-01

    This review of the literature covers the changes in the approach to veterinary health management that led to the introduction of computerized herd health programs and the various other applications of the computer in the practice of dairy herd medicine. The role that production recording systems, mainframe computers, minicomputers, and microcomputers have played in the evolution of herd health programs are also reviewed. PMID:17423392

  5. Optimizing Xenix I/O

    SciTech Connect

    Bottorff, P.; Potts, B.

    1983-08-01

    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.

  6. Robots in space exploration

    NASA Technical Reports Server (NTRS)

    Dobrotin, B. M.

    1974-01-01

    A brief outline of NASA's current robotics program is presented. Efforts are being concentrated on a roving surface vehicle for Mars exploration. This vehicle will integrate manipulative, locomotive, and visual functions and will feature an electromechanical manipulator, stereo TV cameras, a laser rangefinder, a minicomputer, and a remote off-line computer. The program hinges on the iterative development of complex scenarios describing the robot's mission and the interrelationships among its various subsystems.

  7. Signal processing at the Poker Flat MST radar

    NASA Technical Reports Server (NTRS)

    Carter, D. A.

    1983-01-01

    Signal processing for Mesosphere-Stratosphere-Troposphere (MST) radar is carried out by a combination of hardware in high-speed, special-purpose devices and software in a general-purpose, minicomputer/array processor. A block diagram of the signal processing system is presented, and the steps in the processing pathway are described. The current processing capabilities are given, and a system offering greater coherent integration speed is advanced which hinges upon a high speed preprocessor.

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

    SciTech Connect

    Cutkosky, R.D.

    1983-07-01

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

  9. Development of an infrared polarimeter

    NASA Technical Reports Server (NTRS)

    Coffeen, D. L.

    1972-01-01

    AEROPOL infrared polarimeter was built for measurements microns between 1.1 and 3.5 microns, with a 1.5 degree field of view, using a wire grid polarization analyzer. A PbS detector is cooled by condensed Freon-13. The instrument operates under minicomputer control, giving a polarization least squares solution each 2.5 seconds. AEROPOL was flown on the NASA CV-990 aircraft, in a remote-sensing study of terrestrial cloud particle sizes and shapes.

  10. Display system for imaging scientific telemetric information

    NASA Technical Reports Server (NTRS)

    Zabiyakin, G. I.; Rykovanov, S. N.

    1979-01-01

    A system for imaging scientific telemetric information, based on the M-6000 minicomputer and the SIGD graphic display, is described. Two dimensional graphic display of telemetric information and interaction with the computer, in analysis and processing of telemetric parameters displayed on the screen is provided. The running parameter information output method is presented. User capabilities in the analysis and processing of telemetric information imaged on the display screen and the user language are discussed and illustrated.

  11. UNIBUS monitor for PDP 11. [DSN digital radar system

    NASA Technical Reports Server (NTRS)

    Donner, M. D.

    1978-01-01

    A UNIBUS monitor was designed and constructed to facilitate development of hardware interfaces with the PDP 11 minicomputer. The monitor provides useful displays of UNIBUS conditions and provides the user with a flexible diagnostic tool. It can also serve as a simple display and data entry device, permitting extremely simple input/output (I/O) for development software. At this time, the monitor is being used with the DSN planetary radar system, which uses a PDP 11.

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

    SciTech Connect

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

    1990-01-01

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

  13. Developing a Computerized Medical Coding System for an Ambulatory Care Facility

    PubMed Central

    Laviola, Maureen; Jacobson, Catherine

    1981-01-01

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

  14. A computer based ionospheric sounding and HF noise measuring system

    NASA Astrophysics Data System (ADS)

    Earl, G. F.

    1980-09-01

    A system for the automated collection of ionospheric backscatter sounding and HF noise measurement data is described. The system was configured around a PDP 11/40 minicomputer and modified Barry Research FMCW sounding equipment. The real time digital signal processing associated with the backscatter sounder and noise measurement systems is discussed. The data are displayed and recorded in a calibrated mode, and examples are presented.

  15. Real-time flight test data distribution and display

    NASA Technical Reports Server (NTRS)

    Nesel, Michael C.; Hammons, Kevin R.

    1988-01-01

    Enhancements to the real-time processing and display systems of the NASA Western Aeronautical Test Range are described. Display processing has been moved out of the telemetry and radar acquisition processing systems super-minicomputers into user/client interactive graphic workstations. Real-time data is provided to the workstations by way of Ethernet. Future enhancement plans include use of fiber optic cable to replace the Ethernet.

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

    NASA Technical Reports Server (NTRS)

    Rogers, J. L., Jr.

    1981-01-01

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

  17. Riser unit covers all angles

    SciTech Connect

    Dean, Q.W.

    1980-06-05

    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)

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

    NASA Technical Reports Server (NTRS)

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

    1985-01-01

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

  19. High-speed simulation of transients in nuclear power plants

    SciTech Connect

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

    1984-01-01

    A combination of advanced modeling techniques and modern, special-purpose peripheral minicomputer technology is presented which affords realistic predictions of plant transient and severe off-normal events in LWR power plants through on-line simulations at a speed ten times greater than actual process speeds. Results are shown for a BWR plant simulation. Results are shown to demonstrate computing capacity, accuracy, and speed. Simulation speeds have been achieved which are 110 times larger than those of a CDC-7600 mainframe computer or ten times greater than real-time speed.

  20. Industrial linguistic control

    SciTech Connect

    King, R.E.; Karonis, F.

    1983-01-01

    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.

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

    NASA Technical Reports Server (NTRS)

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

    1977-01-01

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

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

    NASA Technical Reports Server (NTRS)

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

    1980-01-01

    One hundred and seventy four silicon sheet samples were analyzed for twin boundary density, dislocation pit density, and grain boundary length. Procedures were developed for the quantitative analysis of the twin boundary and dislocation pit densities using a QTM-720 Quantitative Image Analyzing system. The QTM-720 system was upgraded with the addition of a PDP 11/03 mini-computer with dual floppy disc drive, a digital equipment writer high speed printer, and a field-image feature interface module. Three versions of a computer program that controls the data acquisition and analysis on the QTM-720 were written. Procedures for the chemical polishing and etching were also developed.

  3. Alternatives in the complement and structure of NASA teleprocessing resources

    NASA Technical Reports Server (NTRS)

    1972-01-01

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

  4. Effects of misalignment on mechanical behavior of metals in creep

    NASA Technical Reports Server (NTRS)

    Wu, H. C.

    1981-01-01

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

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

    NASA Technical Reports Server (NTRS)

    Peterson, Victor L.; Bailey, F. Ron

    1988-01-01

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

  6. Robot welding process control

    NASA Technical Reports Server (NTRS)

    Romine, Peter L.

    1991-01-01

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

  7. Experiment-control system for Polimass pulse mass spectrometer installation

    SciTech Connect

    Kozlov, S.L.; Shafranovskii, E.A.; Shchukin, N.F.

    1987-04-01

    The control system employs a Nokia LP4840 multichannel analyzer (Finland), a remote SM-1 minicomputer, and A723-1 high-speed data-transmission modules through which data are exchanged between the installation and the computer. The control system transfers data from the analyzer to the computer, controls the analyzer, monitors the states of the installation and the control system, and outputs the processing results to a dot-matrix printer. The component base is integrated circuits of series K155.

  8. INEL personal computer version of MACCS 1. 5

    SciTech Connect

    Jones, K.R.; Dobbe, C.A.; Knudson, D.L. )

    1991-03-01

    The MELCOR Accident Consequence Code System, Version 1.5, (MACCS 1.5) calculates potential consequences resulting from atmospheric releases of radioactive materials. Sandia National Laboratories developed the code for the US Nuclear Regulatory Commission on a VAX/VMS mini-computer. This report documents the Idaho National Engineering Laboratory conversion of MACCS 1.5 for compilation and execution on an 80386-based IBM or IBM-compatible personal computer (PC). The resulting PC version of the code is available through the National Energy Software Center, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439. 2 refs., 1 fig., 1 tab.

  9. An integrated information support system for the factory floor of an ammunition manufacturing plant

    SciTech Connect

    Schroeder, J.O.; Badalamente, R.V.; Crow, V.L.

    1988-11-01

    An integrated information support system provides information processing and management on the factory floor of an ammunition manufacturing plant. The system is designed as a distributed network of minicomputers, process control computers and personal computer workstations that interactively update a complex relational database. The system controls and analyzes production,quality, and maintenance functions. Attention to human factors engineering during design has resulted in minimum training time and high user acceptance. The paper presents the system's life-cycle history and a critique of the implementation approach and system design. 3 refs., 4 figs.

  10. Advances in airborne radar. The new capabilities

    NASA Astrophysics Data System (ADS)

    Stewart, C. M.

    1983-06-01

    The power and speed of the minicomputer, microprocessor, and other signal processing subsystems have had a very significant effect on the operational capability now available from airborne radar. The mechanization of hitherto unrealizable processing strategies has encouraged the development of more sophisticated pulse compression and pulse Doppler radars and allowed them to achieve their full potential within the size and weight constraints of an aircraft installation. The new capabilities in each of the operational roles in which radar is used outlining the techniques employed are reviewed.

  11. MORPH-I (Ver 1.0) a software package for the analysis of scanning electron micrograph (binary formatted) images for the assessment of the fractal dimension of enclosed pore surfaces

    USGS Publications Warehouse

    Mossotti, Victor G.; Eldeeb, A. Raouf; Oscarson, Robert

    1998-01-01

    MORPH-I is a set of C-language computer programs for the IBM PC and compatible minicomputers. The programs in MORPH-I are used for the fractal analysis of scanning electron microscope and electron microprobe images of pore profiles exposed in cross-section. The program isolates and traces the cross-sectional profiles of exposed pores and computes the Richardson fractal dimension for each pore. Other programs in the set provide for image calibration, display, and statistical analysis of the computed dimensions for highly complex porous materials. Requirements: IBM PC or compatible; minimum 640 K RAM; mathcoprocessor; SVGA graphics board providing mode 103 display.

  12. Development and Implementation of Kumamoto Technopolis Regional Database T-KIND

    NASA Astrophysics Data System (ADS)

    Onoue, Noriaki

    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.

  13. The Johns Hopkins Oncology Clinical Information System

    PubMed Central

    Lenhard, Raymond E.; Blum, Bruce I.; Sunderland, Jeffery M.; Braine, Hayden G.; Saral, Rein

    1982-01-01

    The Johns Hopkins Oncology Center has developed and maintains a clinical information system to support patient care, education, research and administrative functions. It operates on a dedicated mini-computer (PDP-11) programmed in MUMPS. Clinical information collelcted includes patient medical status and laboratory values. Data are used daily in patient care and also in support of retrospective and prospective research. The use of the system to manage a large blood product pheresis program and to study and treat infectious disease is described. Administrative functions include patient and personnel scheduling, program evaluation and projects directed toward control of costs.

  14. An accelerated forth data-acquisition system

    NASA Technical Reports Server (NTRS)

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

    1986-01-01

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

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

    NASA Technical Reports Server (NTRS)

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

    1982-01-01

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

  16. An object oriented software bus

    SciTech Connect

    McGirt, F.; Wilkerson, J.F.

    1995-12-31

    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.

  17. Operator-generated command language for computer control of Doublet III

    SciTech Connect

    Drobnis, D.; Petersen, P.

    1982-02-01

    The Control System for Doublet III consists of a medium-sized minicomputer system, with several keyboards and color alphanumeric CRTs for interactive operator interface to a large distributed CAMAC I/O system. Under normal operating conditions, however, all of the sequential and decision-making operations necessary to prepare each tokamak shot are performed directly by the computer, executing a set of Procedures coded in a convenient command language. Most of these Procedures have been developed by the Doublet III operators themselves, and are maintained, altered, and augmented as required without programmer attention. In effect, the Procedures have become a high-level tokamak Command Language.

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

    PubMed Central

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

    1988-01-01

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

  19. ART/Ada design project, phase 1. Task 3 report: Test plan

    NASA Technical Reports Server (NTRS)

    Allen, Bradley P.

    1988-01-01

    The plan is described for the integrated testing and benchmark of Phase Ada based ESBT Design Research Project. The integration testing is divided into two phases: (1) the modules that do not rely on the Ada code generated by the Ada Generator are tested before the Ada Generator is implemented; and (2) all modules are integrated and tested with the Ada code generated by the Ada Generator. Its performance and size as well as its functionality is verified in this phase. The target platform is a DEC Ada compiler on VAX mini-computers and VAX stations running the VMS operating system.

  20. User's operating procedures. Volume 2: Scout project financial analysis program

    NASA Technical Reports Server (NTRS)

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

    1985-01-01

    A review is presented of the user's operating procedures for the Scout Project Automatic Data system, called SPADS. SPADS is the result of the past seven years of software development on a Prime mini-computer located at the Scout Project Office, NASA Langley Research Center, Hampton, Virginia. SPADS was developed as a single entry, multiple cross-reference data management and information retrieval system for the automation of Project office tasks, including engineering, financial, managerial, and clerical support. This volume, two (2) of three (3), provides the instructions to operate the Scout Project Financial Analysis program in data retrieval and file maintenance via the user friendly menu drivers.

  1. GEM: Statistical weather forecasting procedure

    NASA Technical Reports Server (NTRS)

    Miller, R. G.

    1983-01-01

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

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

    NASA Technical Reports Server (NTRS)

    Katz, Y. H.

    1973-01-01

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

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

    NASA Technical Reports Server (NTRS)

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

    1985-01-01

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

  4. APSAS; an Automated Particle Size Analysis System

    USGS Publications Warehouse

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

    1985-01-01

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

  5. Registration of Heat Capacity Mapping Mission day and night images

    NASA Technical Reports Server (NTRS)

    Watson, K.; Hummer-Miller, S.; Sawatzky, D. L. (Principal Investigator)

    1982-01-01

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

  6. High resolution color raster computer animation of space filling molecular models

    SciTech Connect

    Max, N.L.

    1981-01-01

    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.

  7. Operations manual for the data acquisition and reduction system, Area III Actuator Test Facility

    SciTech Connect

    Smith, E.L.

    1984-03-01

    This manual describes the operation of the new minicomputer-based data acquisition and reduction system for the Area III Actuator Test Facility at Sandia National Laboratories. The stand-alone digital system will alleviate current problems with test control and analysis and with data presentation. In its initial configuration, it will digitize test results recorded on FM tape and present the data graphically for reports. The ultimate goal of this system is to upgrade the performance, safety, and turnaround time of actuator tests through improved quality, analysis, and presentation of data.

  8. Consolidation of data base for Army generalized missile model

    NASA Technical Reports Server (NTRS)

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

    1980-01-01

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

  9. The Penn State astronomical image processing system

    NASA Astrophysics Data System (ADS)

    Truax, Ryland J.; Nousek, John A.; Feigelson, Eric D.; Lonsdale, Colin J.

    1987-06-01

    The needs of modern astronomy for image processing set demanding standards in simultaneously requiring fast computation speed, high-quality graphic display, large data storage, and interactive response. An innovative image processing system was designed, integrated, and used; it is based on a supermicro architecture which is tailored specifically for astronomy, which provides a highly cost-effective alternative to the traditional minicomputer installation. The paper describes the design rationale, equipment selection, and software developed to allow other astronomers with similar needs to benefit from the present experience.

  10. BLD: A Software System for Physiological Data Handling and Model Analysis

    PubMed Central

    Carson, Richard E.; Huang, Sung-Cheng; Phelps, Michael E.

    1981-01-01

    The development of mathematical models for the analysis of physiological data can be a difficult and time consuming procedure, especially when limited by software. This paper describes a minicomputer software system called BLD which facilitates data input, display, and model specification and generalized linear and non-linear regression. The package also includes an APL-like interpreter which allows convenient array-oriented data manipulation. BLD has proven to be a flexible, user-oriented tool, convenient for both interactive and batch operation modes.

  11. Microcontroller interface for diode array spectrometry

    NASA Astrophysics Data System (ADS)

    Aguo, L.; Williams, R. R.

    An alternative to bus-based computer interfacing is presented using diode array spectrometry as a typical application. The new interface consists of an embedded single-chip microcomputer, known as a microcontroller, which provides all necessary digital I/O and analog-to-digital conversion (ADC) along with an unprecedented amount of intelligence. Communication with a host computer system is accomplished by a standard serial interface so this type of interfacing is applicable to a wide range of personal and minicomputers and can be easily networked. Data are acquired asynchronousty and sent to the host on command. New operating modes which have no traditional counterparts are presented.

  12. The Physician's Workstation: an example of end user integration of information systems.

    PubMed

    Hammond, J E; Berger, R G; Carey, T S; Rutledge, R; Cleveland, T J; Kichak, J P; Ayscue, C F

    1991-01-01

    Many hospitals today have implemented widely disparate information systems on mainframe and mini-computer hardware. The advent of network technology in hospitals has made it possible to access information in these systems. Unfortunately, the user interfaces to applications on these system are unique and difficult to learn, which makes them unsuitable for use by clinical services. In this paper we describe the development using rapid prototyping object-oriented programming tools of a Physician's Workstation which integrates information from five different applications running on three separate computer systems. PMID:1807772

  13. UNIX-based data management system for the Mobile Satellite Propagation Experiment (PiFEx)

    NASA Technical Reports Server (NTRS)

    Kantak, Anil V.

    1987-01-01

    A new method is presented for handling data resulting from Mobile Satellite propagation experiments such as the Pilot Field Experiment (PiFEx) conducted by JPL. This method uses the UNIX operating system and C programming language. The data management system is implemented on a VAX minicomputer. The system automatically divides the large data file housing data from various experiments under a predetermined format into various individual files containing data from each experiment. The system also has a number of programs written in C and FORTRAN languages to allow the researcher to obtain meaningful quantities from the data at hand.

  14. The library and its home computer: automation as if people mattered.

    PubMed

    Avriel, D

    1983-07-01

    To provide its users with quick and easy access to the library resources, the Muriel and Philip Berman National Medical Library, Jerusalem, between 1978 and 1982 developed an integrated library system (MAIMON) on a minicomputer. Because humans are the most important element of the library system, MAIMON's performance was evaluated in terms of benefits provided to patrons, library management, and library staff. After successfully adopting the system, users' needs and expectations have grown. How the existing system will be used and expanded to meet the new information demands at the library is discussed. PMID:6626802

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

    NASA Technical Reports Server (NTRS)

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

    1985-01-01

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

  16. A Hospital Local Area Communication Network—The First Year's Experience

    PubMed Central

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

    1982-01-01

    A local area communications network has been implemented at the University of California, San Francisco Hospital to integrate major components of the hospital's information system. This microprocessor-based network technology was developed by The Applied Physics Laboratory of the Johns Hopkins University. The first year's experience has demonstrated the basic feasibility of this technology in simplifying the integration of diverse hardware and software systems. Four minicomputer-based UCSF systems now use the network to synchronize key patient identification and registration information among the systems. Clinical uses of the network will begin during the second year of the project.

  17. The Penn State astronomical image processing system

    NASA Technical Reports Server (NTRS)

    Truax, Ryland J.; Nousek, John A.; Feigelson, Eric D.; Lonsdale, Colin J.

    1987-01-01

    The needs of modern astronomy for image processing set demanding standards in simultaneously requiring fast computation speed, high-quality graphic display, large data storage, and interactive response. An innovative image processing system was designed, integrated, and used; it is based on a supermicro architecture which is tailored specifically for astronomy, which provides a highly cost-effective alternative to the traditional minicomputer installation. The paper describes the design rationale, equipment selection, and software developed to allow other astronomers with similar needs to benefit from the present experience.

  18. Integrating the university medical center. Phase one: providing an information backbone.

    PubMed Central

    Berry, S. J.; Reber, E.; Offeman, W. E.

    1991-01-01

    UCLA School of Medicine represents a diverse computing community where the creation of each individual network has been driven by applications, price/performance and functionality. Indeed, the ability to connect to other computers has had no bearing on selection. Yet, there exists a need to seamlessly connect the individual networks to other minicomputers, mainframes and remote computers. We have created a school wide backbone network that will enable an individual from a single workstation to access a wide variety of services residing on any number of machines. PMID:1807658

  19. Nova control system: goals, architecture, and system design

    SciTech Connect

    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

    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.

  20. The library and its home computer: automation as if people mattered.

    PubMed Central

    Avriel, D

    1983-01-01

    To provide its users with quick and easy access to the library resources, the Muriel and Philip Berman National Medical Library, Jerusalem, between 1978 and 1982 developed an integrated library system (MAIMON) on a minicomputer. Because humans are the most important element of the library system, MAIMON's performance was evaluated in terms of benefits provided to patrons, library management, and library staff. After successfully adopting the system, users' needs and expectations have grown. How the existing system will be used and expanded to meet the new information demands at the library is discussed. Images PMID:6626802

  1. Feasibility study: Replacement of the inoperative decommutating buffer subsystem for the instrumentation checkout complex in the Quality and Reliability Assurance Laboratory

    NASA Technical Reports Server (NTRS)

    Hilliard, J. W.

    1972-01-01

    A general purpose computer system, that is necessary for replacement of the present inoperative signal decommutator special purpose computer subsystem is described. The present decommutator subsystem has a very poor history of reliability and since April 1970, it has become inoperative because the core memory cannot be repaired. Functions of the present signal, decommutator subsystem are to receive, demultiplex, record in real time, playback in real time, and output to the SDS-930 control computer for analysis of the telemetry data. Recommendations for replacement of the inoperative telemetry decommutator subsystem are for the purchase of a mini-computer.

  2. Rocketdyne automated dynamics data analysis and management system

    NASA Technical Reports Server (NTRS)

    Tarn, Robert B.

    1988-01-01

    An automated dynamics data analysis and management systems implemented on a DEC VAX minicomputer cluster is described. Multichannel acquisition, Fast Fourier Transformation analysis, and an online database have significantly improved the analysis of wideband transducer responses from Space Shuttle Main Engine testing. Leakage error correction to recover sinusoid amplitudes and correct for frequency slewing is described. The phase errors caused by FM recorder/playback head misalignment are automatically measured and used to correct the data. Data compression methods are described and compared. The system hardware is described. Applications using the data base are introduced, including software for power spectral density, instantaneous time history, amplitude histogram, fatigue analysis, and rotordynamics expert system analysis.

  3. Retrofit energy studies of a recreation center

    SciTech Connect

    Haberl, J.S.; Claridge, D.

    1985-01-01

    Retrofit energy options for the Student Recreation Center at the University of Colorado have been evaluated using the DOE-2.1b simulation program. This building has two major systems that are not included in the program - an ice rink and a swimming pool. The approach used to model these systems and the use of the program for other applications not included in the program, such as duty cycling and night cycling of fans for freeze protection, are emphasized. Measures that help streamline the usage of the program on a minicomputer are also discussed.

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

    NASA Technical Reports Server (NTRS)

    Peri, Frank, Jr.

    1992-01-01

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

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

    NASA Technical Reports Server (NTRS)

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

    1987-01-01

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

  6. Use of functional mass in renal scintigraphy to detect segmental arterial lesions

    SciTech Connect

    Stibolt, T.B. Jr.; Bacher, J.D.; Dunnick, N.R.; Lock, A.; Jones, A.E.; Bailey, J.J.

    1982-04-01

    Renography using a gamma camera, a minicomputer, (/sup 123/I)orthoiodohippurate ((/sup 123/I)OIH), and a canine model was employed to evaluate computer-generated maps of regional renal function. Renograms were obtained before and after ligations of the right renal arterial branch in four dogs, with subsequent angiographic and histologic confirmation of the lesions. Postoperative time-activity curves were normal. Washout and persistence index in three of four right kidneys showed regional abnormality. Functional renal mapping may provide a clinical technique for evaluating human renal vascular hypertension.

  7. Computer Applications in Mental Health Management

    PubMed Central

    Hedlund, James L.; Wurster, Cecil R.

    1982-01-01

    This paper presents an overview of computer applications in mental health management. It makes a distinction between general (omnibus) mental health information systems and management information systems, between administrative and clinical computer applications, and summarizes the trend toward efficient, well-defined minimal-data-base management systems, with smaller, less expensive hardware. It also comments briefly on other current trends, including the move from central batch processing on mainframe computers to interactive, distributed processing using minicomputers at regional centers, greatly improved, more flexible data base management systems, and a new NIMH prototype management information system for community mental health centers.

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

    NASA Technical Reports Server (NTRS)

    Lewis, J. L.

    1979-01-01

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

  9. Manipulator for rotating and examining small spheres

    DOEpatents

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

    1980-02-12

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

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

    NASA Technical Reports Server (NTRS)

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

    1979-01-01

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

  11. Manipulator for rotating and examining small spheres

    DOEpatents

    Weinstein, Berthold W. [Livermore, CA; Willenborg, David L. [Livermore, CA

    1980-02-12

    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.

  12. Analysis of brass alloys by wavelength dispersive x-ray spectrometry: Final report

    SciTech Connect

    Frede, W.G.

    1989-02-01

    A method was developed to determine the concentration of copper, zinc, iron, lead, and tin in brass alloys using wavelength dispersive x-ray spectrometry. This method incorporates the use of a 24-position sample carrousel for unattended operation and a minicomputer for data collection and analysis. The concentration of the five elements of interest is calculated using a fundamental parameters computer program for x-ray fluorescence analyses. Using this method, the standard deviation for each element is Cu, 0.016 percent; Zn, 0.015 percent; Fe, 0.0002 percent; Pb, 0.0019 percent; and Sn, 0.009 percent. 10 refs., 7 figs., 3 tabs.

  13. Conveyor system moves material continuously

    SciTech Connect

    Not Available

    1983-12-01

    German technology and equipment is used in mining operations worldwide. A PHB Wesserhutte system is being used with face shovel, mobile crusher, crawler-mounted transfer conveyor, and shiftable conveyor which results in crushing and transporting the minerals to the processing plant in a continuous flow path. The entire process is controlled by a programmable logic controller (a mini-computer) and all systems are sequentially interlocked according to the material flow path. Working methods using the mobile crusher and conveying systems are illustrated.

  14. Distributed processing techniques: interface design for interactive information sharing.

    PubMed

    Wagner, J R; Krumbholz, S D; Silber, L K; Aniello, A J

    1978-01-01

    The Information Systems Division of the University of Iowa Hospitals and Clinics has successfully designed and implemented a set of generalized interface data-handling routines that control message traffic between a satellite minicomputer in a clinical laboratory and a large main-frame computer. A special queue status inquiry transaction has also been developed that displays the current message-processing backlog and other system performance information. The design and operation of these programs are discussed in detail, with special emphasis on the message-queuing and verification techniques required in a distributed processing environment. PMID:756462

  15. Development INTERDATA 8/32 computer system

    NASA Technical Reports Server (NTRS)

    Sonett, C. P.

    1983-01-01

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

  16. Airborne infrared polarimeter

    NASA Technical Reports Server (NTRS)

    Coffeen, D. L.; Hameen-Anttila, J.; Toubhans, R. H.

    1975-01-01

    An infrared polarimeter was built to measure the degree of linear polarization and the direction of vibration of radiation scattered upwards by clouds, between 1.1 and 3.5 microns, with a 1.5-deg field of view, using a rotating wire-grid polarization analyzer. A PbS detector is cooled to 192 K by condensing freon-13. This AEROPOL instrument operates under minicomputer control, giving a polarization least-squares solution every 2.5 s. The polarimeter was flown on the NASA CV-990 aircraft, in a remote-sensing study of terrestrial cloud particle sizes and shapes.

  17. Online assessment of a distributed processor

    NASA Technical Reports Server (NTRS)

    Ehrlich, L. F.

    1980-01-01

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

  18. Applications of intelligent-measurement systems in controlled-fusion research

    SciTech Connect

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

    1981-06-22

    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.

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

    USGS Publications Warehouse

    Shope, William G., Jr.

    1987-01-01

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

  20. Data base management study

    NASA Technical Reports Server (NTRS)

    1976-01-01

    Data base management techniques and applicable equipment are described. Recommendations which will assist potential NASA data users in selecting and using appropriate data base management tools and techniques are presented. Classes of currently available data processing equipment ranging from basic terminals to large minicomputer systems were surveyed as they apply to the needs of potential SEASAT data users. Cost and capabilities projections for this equipment through 1985 were presented. A test of a typical data base management system was described, as well as the results of this test and recommendations to assist potential users in determining when such a system is appropriate for their needs. The representative system tested was UNIVAC's DMS 1100.

  1. F100 Multivariable Control Synthesis Program. Computer Implementation of the F100 Multivariable Control Algorithm

    NASA Technical Reports Server (NTRS)

    Soeder, J. F.

    1983-01-01

    As turbofan engines become more complex, the development of controls necessitate the use of multivariable control techniques. A control developed for the F100-PW-100(3) turbofan engine by using linear quadratic regulator theory and other modern multivariable control synthesis techniques is described. The assembly language implementation of this control on an SEL 810B minicomputer is described. This implementation was then evaluated by using a real-time hybrid simulation of the engine. The control software was modified to run with a real engine. These modifications, in the form of sensor and actuator failure checks and control executive sequencing, are discussed. Finally recommendations for control software implementations are presented.

  2. Robot welding process control

    NASA Astrophysics Data System (ADS)

    Romine, Peter L.

    1991-07-01

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

  3. Software methodologies for a synthesis-by-rule system

    NASA Astrophysics Data System (ADS)

    Lesmo, L.; Torasso, P.; Mezzalama, M.

    1980-06-01

    The man-machine communication by voice has become a field of interest in the last years. This paper outlines the characteristics of the computer voice response systems and describes in detail a synthesis-by-rule system for the Italian language. The synthesis-by-rule is based on a mathematical model of the human phonatory apparatus and makes it possible to easily control the prosodic features (intonation, stress, context, etc.). A particular emphasis is given to the description of the practical aspects of the system, which has been implemented on a minicomputer, and to the software methodologies adopted to efficiently manage the system's facilities in an interactive way.

  4. System of Programmed Modules for Measuring Photographs with a Gamma-Telescope

    NASA Technical Reports Server (NTRS)

    Averin, S. A.; Veselova, G. V.; Navasardyan, G. V.

    1978-01-01

    Physical experiments using tracking cameras resulted in hundreds of thousands of stereo photographs of events being received. To process such a large volume of information, automatic and semiautomatic measuring systems are required. At the Institute of Space Research of the Academy of Science of the USSR, a system for processing film information from the spark gamma-telescope was developed. The system is based on a BPS-75 projector in line with the minicomputer Elektronika 1001. The report describes this system. The various computer programs available to the operators are discussed.

  5. The Earth Resources Laboratory Applications Software (ELAS) in university research and education: An operator oriented geobased information system

    NASA Technical Reports Server (NTRS)

    Coker, B. L.; Kind, T. C.; Smith, W. F., Jr.; Weber, N. V.

    1981-01-01

    Created for analyzing and processing digital data such as that collected by multispectral scanners or digitized from maps, ELAS is designed for ease of user operation and includes its own FORTRAN operating monitor and an expandable set of application modules which are FORTRAN overlays. On those machines that do not support FORTRAN overlaying, the modules exist as subprograms. The subsystem can be implemented on most 16-bit or 32-bit machines and is capable of, but not limited to, operating on low-cost minicomputer systems. The recommended hardware configuration for ELAS and a representative listing of some operating and application modules are presented.

  6. Distributed data base systems with special emphasis toward POREL

    NASA Technical Reports Server (NTRS)

    Neuhold, E. J.

    1984-01-01

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

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

    NASA Technical Reports Server (NTRS)

    Schell, J. A.

    1974-01-01

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

  8. Clinical application of a light-pen computer system for quantitative angiography

    NASA Technical Reports Server (NTRS)

    Alderman, E. L.

    1975-01-01

    The paper describes an angiographic analysis system which uses a video disk for recording and playback, a light-pen for data input, minicomputer processing, and an electrostatic printer/plotter for hardcopy output. The method is applied to quantitative analysis of ventricular volumes, sequential ventriculography for assessment of physiologic and pharmacologic interventions, analysis of instantaneous time sequence of ventricular systolic and diastolic events, and quantitation of segmental abnormalities. The system is shown to provide the capability for computation of ventricular volumes and other measurements from operator-defined margins by greatly reducing the tedium and errors associated with manual planimetry.

  9. AVID - A design system for technology studies of advanced transportation concepts. [Aerospace Vehicle Interactive Design

    NASA Technical Reports Server (NTRS)

    Wilhite, A. W.; Rehder, J. J.

    1979-01-01

    The basic AVID (Aerospace Vehicle Interactive Design) is a general system for conceptual and preliminary design currently being applied to a broad range of future space transportation and spacecraft vehicle concepts. AVID hardware includes a minicomputer allowing rapid designer interaction. AVID software includes (1) an executive program and communication data base which provide the automated capability to couple individual programs, either individually in an interactive mode or chained together in an automatic sequence mode; and (2) the individual technology and utility programs which provide analysis capability in areas such as graphics, aerodynamics, propulsion, flight performance, weights, sizing, and costs.

  10. Prescriptive concepts for advanced nuclear materials control and accountability systems

    SciTech Connect

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

    1987-06-01

    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.

  11. Digital system for structural dynamics simulation

    NASA Technical Reports Server (NTRS)

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

    1982-01-01

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

  12. Computer analysis of digital well logs

    USGS Publications Warehouse

    Scott, James H.

    1984-01-01

    A comprehensive system of computer programs has been developed by the U.S. Geological Survey for analyzing digital well logs. The programs are operational on a minicomputer in a research well-logging truck, making it possible to analyze and replot the logs while at the field site. The minicomputer also serves as a controller of digitizers, counters, and recorders during acquisition of well logs. The analytical programs are coordinated with the data acquisition programs in a flexible system that allows the operator to make changes quickly and easily in program variables such as calibration coefficients, measurement units, and plotting scales. The programs are designed to analyze the following well-logging measurements: natural gamma-ray, neutron-neutron, dual-detector density with caliper, magnetic susceptibility, single-point resistance, self potential, resistivity (normal and Wenner configurations), induced polarization, temperature, sonic delta-t, and sonic amplitude. The computer programs are designed to make basic corrections for depth displacements, tool response characteristics, hole diameter, and borehole fluid effects (when applicable). Corrected well-log measurements are output to magnetic tape or plotter with measurement units transformed to petrophysical and chemical units of interest, such as grade of uranium mineralization in percent eU3O8, neutron porosity index in percent, and sonic velocity in kilometers per second.

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

    DOEpatents

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

    1984-06-19

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

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

    DOEpatents

    Yeung, Edward S.; Woodruff, Steven D.

    1984-06-19

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

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

    SciTech Connect

    Trubey, D.K.

    1991-05-01

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

  16. Data Processing and Analysis Systems for JT-60U

    SciTech Connect

    Matsuda, T.; Totsuka, T.; Tsugita, T.; Oshima, T.; Sakata, S.; Sato, M.; Iwasaki, K.

    2002-09-15

    The JT-60U data processing system is a large computer complex gradually modernized by utilizing progressive computer and network technology. A main computer using state-of-the-art CMOS technology can handle {approx}550 MB of data per discharge. A gigabit ethernet switch with FDDI ports has been introduced to cope with the increase of handling data. Workstation systems with VMEbus serial highway drivers for CAMAC have been developed and used to replace many minicomputer systems. VMEbus-based fast data acquisition systems have also been developed to enlarge and replace a minicomputer system for mass data.The JT-60U data analysis system is composed of a JT-60U database server and a JT-60U analysis server, which are distributed UNIX servers. The experimental database is stored in the 1TB RAID disk of the JT-60U database server and is composed of ZENKEI and diagnostic databases. Various data analysis tools are available on the JT-60U analysis server. For the remote collaboration, technical features of the data analysis system have been applied to the computer system to access JT-60U data via the Internet. Remote participation in JT-60U experiments has been successfully conducted since 1996.

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

    SciTech Connect

    Newell, K.D.; Schoeling, L.G.; Wong, J.C. )

    1990-11-01

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

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

    SciTech Connect

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

    1990-09-01

    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)

  19. Computer network that assists in the planning, execution and evaluation of in-reactor experiments

    SciTech Connect

    Bauer, T.H.; Froehle, P.H.; August, C.; Baldwin, R.D.; Johanson, E.W.; Kraimer, M.R.; Simms, R.; Klickman, A.E.

    1985-01-01

    For over 20 years complex, in-reactor experiments have been performed at Argonne National Laboratory (ANL) to investigate the performance of nuclear reactor fuel and to support the development of large computer codes that address questions of reactor safety in full-scale plants. Not only are computer codes an important end-product of the research, but computer analysis is also involved intimately at most stages of experiment planning, data reduction, and evaluation. For instance, many experiments are of sufficiently long duration or, if they are of brief duration, occur in such a purposeful sequence that need for speedy availability of on-line data is paramount. This is made possible most efficiently by computer assisted displays and evaluation. A purposeful linking of main-frame, mini, and micro computers has been effected over the past eight years which greatly enhances the speed with which experimental data are reduced to useful forms and applied to the relevant technological issues. This greater efficiency in data management led also to improvements in the planning and execution of subsequent experiments. Raw data from experiments performed at INEL is stored directly on disk and tape with the aid of minicomputers. Either during or shortly after an experiment, data may be transferred, via a direct link, to the Illinois offices of ANL where the data base is stored on a minicomputer system. This Idaho-to-Illinois link has both enhanced experiment performance and allowed rapid dissemination of results.

  20. A multiprocessor airborne lidar data system

    NASA Technical Reports Server (NTRS)

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

    1988-01-01

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

  1. A multiprocessor airborne lidar data system

    NASA Astrophysics Data System (ADS)

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

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

  2. The computer-based control system of the NAC accelerator

    NASA Astrophysics Data System (ADS)

    Burdzik, G. F.; Bouckaert, R. F. A.; Cloete, I.; Dutoit, J. S.; Kohler, I. H.; Truter, J. N. J.; Visser, K.; Wikner, V. C. S. J.

    The National Accelerator Center (NAC) of the CSIR is building a two-stage accelerator which will provide charged-particle beams for use in medical and research applications. The control system for this accelerator is based on three mini-computers and a CAMAC interfacing network. Closed-loop control is being relegated to the various subsystems of the accelerators, and the computers and CAMAC network will be used in the first instance for data transfer, monitoring and servicing of the control consoles. The processing power of the computers will be utilized for automating start-up and beam-change procedures, for providing flexible and convenient information at the control consoles, for fault diagnosis and for beam-optimizing procedures. Tasks of a localized or dedicated nature are being off-loaded onto microcomputers, which are being used either in front-end devices or as slaves to the mini-computers. On the control consoles only a few instruments for setting and monitoring variables are being provided, but these instruments are universally-linkable to any appropriate machine variable.

  3. Distributed information system (water fact sheet)

    USGS Publications Warehouse

    Harbaugh, A.W.

    1986-01-01

    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)

  4. Foqus: a FORTRAN program for the quantitative analysis of x-ray spectra from thin biological specimens

    SciTech Connect

    Fuchs, H.; Fuchs, W.

    1981-01-01

    An online FORTRAN program for the quantitative analysis of energy dispersive X-ray spectra from thin biological specimens is presented. The methods of background suppression by digital filtering and peak deconvolution by linear least-squares fitting with measured peak profiles are used. The continuum quantitation method for spectra from thin biological sections as proposed by Hall is applied. The performance of the computer program, utilizing the facilities of a disk operating system, is demonstrated. The routines were optimized for speed, resulting in a run-time of less than 5 seconds on a 16 bit minicomputer for a full quantitation for 7 elements of an energy dispersive thin section X-ray spectrum, including an optional absorption correction. Since no assembly language subroutines are implemented, the restrictions for the use of the program with different computer systems are minimized.

  5. Modeling principles and computing technology for high-speed simulation of LWR transients

    SciTech Connect

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

    1986-01-01

    The plant analyzer recently developed at Brookhaven National Laboratory embodies the unique combination of high simulation fidelity, with convenient interactive access, much faster than real-time simulation speed and low cost. This has been achieved through a deliberate match of modeling techniques with modern, special-purpose minicomputer architecture, designed for high-speed simulations of complex systems. The BNL Plant Analyzer is a powerful engineering tool for carrying out, routinely and cost-effectively, safety analyses, optimizations of procedures, parametric studies to obtain safety margins and for generic training. It is also applicable for operator assistance through plant performance monitoring, automatic fault diagnostics and on-line support during emergencies. This paper presents five modeling principles, the criteria for selecting numerical integration techniques and the key features of the special-purpose peripheral processor, the AD10 of Applied Dynamics International. The paper presentation is followed by a remote access demonstration of the plant analyzer.

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

    SciTech Connect

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

    1986-01-01

    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.

  7. Nuclear power plant simulation on the AD10

    SciTech Connect

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

    1985-01-01

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

  8. System design for a real-time atmospheric dispersion model

    NASA Astrophysics Data System (ADS)

    Mulholland, M.; Jury, M. R.

    An interactive, real-time simulation model has been commissioned at the Koeberg nuclear power station near Cape Town. Use of sheared puffs, solved using only the C00, C01, C10, C02, C20 and C11 horizontal moments, reduced computation and allowed arbitrary variation of the wind vector with height. Wind profiles and diffusivity were given spatial definition about the coastal interface by interpolation between six telemetered mast locations within 20 km of Koeberg. Specific design for a real-time environment revealed important principles concerning division into asynchronous tasks, protection against data failures, and on-line operator interaction. With a grid resolution of 300 m in a 40 km × 40 km map area, the model runs at least three times faster than real-time on a HP3000 minicomputer.

  9. DEAR REV-1: a computer system to assist in reclamation planning of postmine topography

    SciTech Connect

    Costain, D.B.; West, J.B.; Ogaard, L.A.; Klein, A.D.

    1982-12-01

    DEAR REV-1 is a computer system designed to assist in planning and evaluating reclamation of post-mine topography on surface mine lands. The system was developed by integrating portions of SEAMPLAN and STAMPEDE software with new system routines on a Harris 550 minicomputer. All DEAR REV-1 functions entail the central ability to represent a surface as a network of square grid cells. Grid surfaces are compared using an array of standard mathematical functions (adding, subtracting, multiplying, dividing). Area, volume, and slope factors can be computed for any given surface and analyses can be partitioned respective to defined geographical entitles (i.e., land use type, etc.). A case example is provided which illustrates key functions of DEAR REV-1. Other applications of DEAR REV-1 not germane to this particular example also are discussed.

  10. Tritium Migration Analysis Program Version 4

    SciTech Connect

    Longhurst, G. R.; Harms, S. L.; Marwil, E. S.; Miller, B. G.

    1991-06-12

    TMAP4 was developed as a safety analysis code, mainly to analyze tritium retention and loss in fusion reactor structures and systems during normal operational and accident conditions. It incorporates one-dimensional thermal and mass-diffusive transport and trapping calculations through structures and zero dimensional fluid transport between enclosures and across the interface between enclosures and structures. Diffusion structures may be linked together with other structures, and multiple structures may interact with an enclosure. A key feature is the ability to input problem definition parameters as constants, interpolation tables, or FORTRAN equations. The code is specifically intended for use under a DOS operating system on PC type minicomputers, but it has also been run successfully on workstations and mainframe computer systems. Use of the equation-input feature requires access to a FORTRAN-77 compiler, and a linker program is required.

  11. A transputer based finite element solver

    NASA Technical Reports Server (NTRS)

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

    1987-01-01

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

  12. Acquisition of quantitative physiological data and computerized image reconstruction using a single scan TV system

    NASA Technical Reports Server (NTRS)

    Baily, N. A.

    1976-01-01

    A single-scan radiography system has been interfaced to a minicomputer, and the combined system has been used with a variety of fluoroscopic systems and image intensifiers available in clinical facilities. The system's response range is analyzed, and several applications are described. These include determination of the gray scale for typical X-ray-fluoroscopic-television chains, measurement of gallstone volume in patients, localization of markers or other small anatomical features, determinations of organ areas and volumes, computer reconstruction of tomographic sections of organs in motion, and computer reconstruction of transverse axial body sections from fluoroscopic images. It is concluded that this type of system combined with a minimum of statistical processing shows excellent capabilities for delineating small changes in differential X-ray attenuation.

  13. The Lockheed alternate partial polarizer universal filter

    NASA Technical Reports Server (NTRS)

    Title, A. M.

    1976-01-01

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

  14. A high pressure, high temperature combustor and turbine-cooling test facility

    NASA Technical Reports Server (NTRS)

    Cochran, R. P.; Norris, J. W.

    1976-01-01

    A new test facility is being constructed for developing turbine-cooling and combustor technology for future generation aircraft gas turbine engines. Prototype engine hardware will be investigated in this new facility at gas stream conditions up to 2480 K average turbine inlet temperature and 4.14 x 10 to the 6th power n sq m turbine inlet pressure. The facility will have the unique feature of fully automated control and data acquisition through the use of an integrated system of mini-computers and programmable controllers which will result in more effective use of operating time, will limit the number of operators required, and will provide built in self protection safety systems. The facility and the planning and design considerations are described.

  15. The Evolution of a Computerized Medical Information System

    PubMed Central

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

    1986-01-01

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

  16. Total ozone determination by spectroradiometry in the middle ultraviolet

    NASA Technical Reports Server (NTRS)

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

    1979-01-01

    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.

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

    SciTech Connect

    McGoldrick, P.R.

    1981-01-01

    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.

  18. In-circuit fault injector user's guide

    NASA Technical Reports Server (NTRS)

    Padilla, Peter A.

    1987-01-01

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

  19. Contextual classification on the massively parallel processor

    NASA Technical Reports Server (NTRS)

    Tilton, James C.

    1987-01-01

    Classifiers are often used to produce land cover maps from multispectral Earth observation imagery. Conventionally, these classifiers have been designed to exploit the spectral information contained in the imagery. Very few classifiers exploit the spatial information content of the imagery, and the few that do rarely exploit spatial information content in conjunction with spectral and/or temporal information. A contextual classifier that exploits spatial and spectral information in combination through a general statistical approach was studied. Early test results obtained from an implementation of the classifier on a VAX-11/780 minicomputer were encouraging, but they are of limited meaning because they were produced from small data sets. An implementation of the contextual classifier is presented on the Massively Parallel Processor (MPP) at Goddard that for the first time makes feasible the testing of the classifier on large data sets.

  20. Safeguards instrumentation: past, present, future

    SciTech Connect

    Higinbotham, W.A.

    1982-01-01

    Instruments are essential for accounting, for surveillance and for protection of nuclear materials. The development and application of such instrumentation is reviewed, with special attention to international safeguards applications. Active and passive nondestructive assay techniques are some 25 years of age. The important advances have been in learning how to use them effectively for specific applications, accompanied by major advances in radiation detectors, electronics, and, more recently, in mini-computers. The progress in seals has been disappointingly slow. Surveillance cameras have been widely used for many applications other than safeguards. The revolution in TV technology will have important implications. More sophisticated containment/surveillance equipment is being developed but has yet to be exploited. On the basis of this history, some expectations for instrumentation in the near future are presented.

  1. ANNIE - INTERACTIVE PROCESSING OF DATA BASES FOR HYDROLOGIC MODELS.

    USGS Publications Warehouse

    Lumb, Alan M.; Kittle, John L.

    1985-01-01

    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.

  2. NDE of simulated Space Shuttle tile disbonds

    NASA Technical Reports Server (NTRS)

    Ahlberg, L.; Tittmann, B. R.; Elsley, R. K.

    1982-01-01

    A technique which involves the use of ultrasonic Lamb waves for assaying the structural integrity of adhesive bonds between layered materials on thin metal plates, particularly with regard to the Shuttle TPS, is presented. The Lamb waves are generated by a pulse impact, resulting in surface waves propagating radially at 2.4 mm/microsec. Trials were performed with the sound waves applied to samples, of aluminum similar to the Orbiter external skin, which were coated with Teflon and a RTV silicone screed. The goal was to detect localized debonded areas or potentially debonded areas, which, during reentry, could result in blistering of the aluminum skin. The ultrasonic probes are described, noting the usage of broadband ultrasonic harmonics and a minicomputer processor. The testing system was found to accurately identify weakened bonds by the ratio of high and low frequency component areas of the received signal of the Lamb waves sent across the surface.

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

    NASA Technical Reports Server (NTRS)

    1981-01-01

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

  4. [Construction of a system for the automatic design of printed-circuit boards for medical electronic apparatus].

    PubMed

    Kukhlevskiĭ, V S; Min'kov, V A; Ul'ianov, S V

    1981-01-01

    The structure of the system for designing printed circuit boards based on such widely used technical equipment as minicomputers and unified-system computers, is discussed. The system allows one to carry out, in consecutive stages, the automation of the process of designing printed circuit boards and the technological provision for their manufacture. The principles of designing the boards on the basis of algorithms using the notion of channels and including the subdivision of the total circuit into separate structural units, the location of different elements in these units and their tracing are described in detail. The stage of making up the design documents and the control punch tapes containing the final stage of tracing correction with the output of the control data or a coordinatograph and numerically controlled machines is considered. PMID:7321819

  5. Composite structural materials. [aircraft structures

    NASA Technical Reports Server (NTRS)

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

    1980-01-01

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

  6. KEK NODAL system

    SciTech Connect

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

    1985-10-01

    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.

  7. Numerical methods: Analytical benchmarking in transport theory

    SciTech Connect

    Ganapol, B.D. )

    1988-01-01

    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.

  8. Personal computer applications in DIII-D neutral beam operation

    SciTech Connect

    Glad, A.S.

    1986-08-01

    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.

  9. Selecting a labor information system. What to ask, what to avoid.

    PubMed

    Garcia, L

    1990-12-01

    Payroll expenses may account for over half of all of a hospital's expenses. Manual time card processing requires an abundance of staff time and can often result in costly errors. To alleviate this problem, many healthcare facilities are implementing computerized labor information systems. To minimize the risk of selecting the wrong system, hospital administrators should ask the following questions before committing to any computerized labor information system: Is the software designed for hospital use and easily adaptable to each hospital's unique policies? How flexible is the software's reporting system? Does it include automatic scheduling that creates generic schedules? Does the system have the capability of securing time and attendance records and documenting the audit trail? Does the system include an accurate and reliable badge reader? What type of hardware is best for the particular hospital--microcomputer, minicomputer, or mainframe? Finally, to guarantee successful software installation, the vendor should have extensive experience and documentation in the system's implementation. PMID:10108009

  10. Automated search for supernovae

    SciTech Connect

    Kare, J.T.

    1984-11-15

    This thesis describes the design, development, and testing of a search system 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 system is now collecting test images of up to several hundred fields per night, with a sensitivity corresponding to a limiting magnitude (visual) of 17. At full speed and sensitivity, the search will examine some 6000 galaxies every three nights, with a limiting magnitude of 18 or fainter, yielding roughly two supernovae per week (assuming one supernova per galaxy per 50 years) at 5 to 50 percent of maximum light. An additional 500 nearby galaxies will be searched every night, to locate about 10 supernovae per year at one or two percent of maximum light, within hours of the initial explosion.

  11. High-speed LWR transients simulation for optimizing emergency response

    SciTech Connect

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

    1984-11-19

    The purpose of computer-assisted emergency response in nuclear power plants, and the requirements for achieving such a response, are presented. An important requirement is the attainment of realistic high-speed plant simulations at the reactor site. Currently pursued development programs for plant simulations are reviewed. Five modeling principles are established and a criterion is presented for selecting numerical procedures and efficient computer hardware to achieve high-speed simulations. A newly developed technology for high-speed power plant simulation is described and results are presented. It is shown that simulation speeds ten times greater than real-time process-speeds are possible, and that plant instrumentation can be made part of the computational loop in a small, on-site minicomputer. Additional technical issues are presented which must still be resolved before the newly developed technology can be implemented in a nuclear power plant.

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

    NASA Technical Reports Server (NTRS)

    Polansky, A. C.

    1982-01-01

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

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

    NASA Astrophysics Data System (ADS)

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

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

  14. Fabrication of a focusing grating mirror by electron beam lithography.

    PubMed

    Hori, Y; Sogawa, F; Asakure, H; Kato, M; Serizawa, H

    1990-06-10

    A focusing grating mirror (FGM), which is a new computer generated holographic grating with functions of focusing lens and diffraction grating mirror, is proposed and fabricated, we believe, for the first time. A high speed and accurate electron beam writing system, based on a multitask minicomputer, 16-bit D/A converters with 64K-word static memories, and a scanning electron beam microscope, is developed and used to fabricate the FGMs comprising grating corrugations with chirp and bend structures. Excellent properties of the FGM are obtained, giving almost diffraction-limited spot size and the expected wavelength dispersion. The fabricated FGM is combined with a laser diode as an external cavity mirror to confirm the functions of direct optical feedback and wavelength selection, and the fundamental operation of an external-cavity laser is demonstrated. PMID:20567287

  15. Speech as a pilot input medium

    NASA Technical Reports Server (NTRS)

    Plummer, R. P.; Coler, C. R.

    1977-01-01

    The speech recognition system under development is a trainable pattern classifier based on a maximum-likelihood technique. An adjustable uncertainty threshold allows the rejection of borderline cases for which the probability of misclassification is high. The syntax of the command language spoken may be used as an aid to recognition, and the system adapts to changes in pronunciation if feedback from the user is available. Words must be separated by .25 second gaps. The system runs in real time on a mini-computer (PDP 11/10) and was tested on 120,000 speech samples from 10- and 100-word vocabularies. The results of these tests were 99.9% correct recognition for a vocabulary consisting of the ten digits, and 99.6% recognition for a 100-word vocabulary of flight commands, with a 5% rejection rate in each case. With no rejection, the recognition accuracies for the same vocabularies were 99.5% and 98.6% respectively.

  16. A microprocessor based communications multiplexer/concentrator

    NASA Technical Reports Server (NTRS)

    Brown, D. W.; Arozullah, M.

    1978-01-01

    In the past communications concentrators have been designed using mini-computers. In this work a design for a high speed concentrator (in the megabits range) is developed using the 3000 series bit slice microprocessor. The proposed concentrator realizes the functions of multiplexing of the data arriving on the low speed lines, demultiplexing of the data arriving on the high speed line, including canned responses and code conversion. The basic system hardware configuration and the principles of operation of the multiplexing and the demultiplexing subsystems are presented. The software for these two functions are also presented. Using queueing theory, an estimate of the required buffer size is provided. Possible areas of further improvement are also indicated.

  17. Tritium Migration Analysis Program Version 4

    Energy Science and Technology Software Center (ESTSC)

    1991-06-12

    TMAP4 was developed as a safety analysis code, mainly to analyze tritium retention and loss in fusion reactor structures and systems during normal operational and accident conditions. It incorporates one-dimensional thermal and mass-diffusive transport and trapping calculations through structures and zero dimensional fluid transport between enclosures and across the interface between enclosures and structures. Diffusion structures may be linked together with other structures, and multiple structures may interact with an enclosure. A key feature ismore » the ability to input problem definition parameters as constants, interpolation tables, or FORTRAN equations. The code is specifically intended for use under a DOS operating system on PC type minicomputers, but it has also been run successfully on workstations and mainframe computer systems. Use of the equation-input feature requires access to a FORTRAN-77 compiler, and a linker program is required.« less

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

    NASA Technical Reports Server (NTRS)

    Wannemacher, Tom

    1990-01-01

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

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

    NASA Technical Reports Server (NTRS)

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

    1980-01-01

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

  20. Data reduction programs for a laser radar system

    NASA Technical Reports Server (NTRS)

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

    1984-01-01

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

  1. Visual Evoked Potential: Computer Assisted Acquisition and Processing

    PubMed Central

    Browder, M. W.; Blaine, G. J.; Montrose, J. K.; Coben, L. A.; Thomas, L. J.

    1980-01-01

    A system to simplify the collection and processing of averaged visual evoked potentials (AVEPs) has been developed. The overall system can be described as a “loosely-coupled” distributed processing system. The coupling between components of the system is in the form of data transfer via machine-readable magnetic storage media, i.e. flexible diskette and industry-compatible 9-track magnetic tape. A microprocessor-based system was developed to provide flexible parameterization of clinical protocols and the collection of AVEPs. Feature-detection algorithms were developed on a minicomputer system to simplify and improve the accuracy of previously used manual scoring methods. An editing system was also developed to allow operator verification and editing of the features located by the automatic system. The parameters of interest are then included in a statistical database on a large computer for further analysis.

  2. AOIPS data base management systems support for GARP data sets

    NASA Technical Reports Server (NTRS)

    Gary, J. P.

    1977-01-01

    A data base management system is identified, developed to provide flexible access to data sets produced by GARP during its data systems tests. The content and coverage of the data base are defined and a computer-aided, interactive information storage and retrieval system, implemented to facilitate access to user specified data subsets, is described. The computer programs developed to provide the capability were implemented on the highly interactive, minicomputer-based AOIPS and are referred to as the data retrieval system (DRS). Implemented as a user interactive but menu guided system, the DRS permits users to inventory the data tape library and create duplicate or subset data sets based on a user selected window defined by time and latitude/longitude boundaries. The DRS permits users to select, display, or produce formatted hard copy of individual data items contained within the data records.

  3. State-of-the-art Monte Carlo 1988

    SciTech Connect

    Soran, P.D.

    1988-06-28

    Particle transport calculations in highly dimensional and physically complex geometries, such as detector calibration, radiation shielding, space reactors, and oil-well logging, generally require Monte Carlo transport techniques. Monte Carlo particle transport can be performed on a variety of computers ranging from APOLLOs to VAXs. Some of the hardware and software developments, which now permit Monte Carlo methods to be routinely used, are reviewed in this paper. The development of inexpensive, large, fast computer memory, coupled with fast central processing units, permits Monte Carlo calculations to be performed on workstations, minicomputers, and supercomputers. The Monte Carlo renaissance is further aided by innovations in computer architecture and software development. Advances in vectorization and parallelization architecture have resulted in the development of new algorithms which have greatly reduced processing times. Finally, the renewed interest in Monte Carlo has spawned new variance reduction techniques which are being implemented in large computer codes. 45 refs.

  4. A computer system for geosynchronous satellite navigation

    NASA Technical Reports Server (NTRS)

    Koch, D. W.

    1980-01-01

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

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

    NASA Technical Reports Server (NTRS)

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

    1987-01-01

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

  6. Correction factors for on-line microprobe analysis of multielement alloy systems

    NASA Technical Reports Server (NTRS)

    Unnam, J.; Tenney, D. R.; Brewer, W. D.

    1977-01-01

    An on-line correction technique was developed for the conversion of electron probe X-ray intensities into concentrations of emitting elements. This technique consisted of off-line calculation and representation of binary interaction data which were read into an on-line minicomputer to calculate variable correction coefficients. These coefficients were used to correct the X-ray data without significantly increasing computer core requirements. The binary interaction data were obtained by running Colby's MAGIC 4 program in the reverse mode. The data for each binary interaction were represented by polynomial coefficients obtained by least-squares fitting a third-order polynomial. Polynomial coefficients were generated for most of the common binary interactions at different accelerating potentials and are included. Results are presented for the analyses of several alloy standards to demonstrate the applicability of this correction procedure.

  7. Reconstruction Of Anatomical Shapes From Moire Contourographs

    NASA Astrophysics Data System (ADS)

    Saunders, Carl G.

    1983-07-01

    A Moire system which rotates an object in front of a slit camera has been used to obtain continuous photographic maps around amputee socket and shoe last shapes. Previous analysis methods required the use of IBM 370 hardware and extensive software overhead. Using a systematic manual digitizing technique and user-interactive FORTRAN software, the shape reconstruction has been easily performed on a PDP-11 minicomputer system. Both the digitizing technique and the software are oriented towards the shape reproduction process. Numerically controlled machining parameters are used to identify a "skewed" grid of required points along the cutter path. Linear interpolation and anti-interference techniques resulted in reproduction of shoe lasts to within 0.05 inches (1.2 millimeters) from the sensing axis. Difficulties were experienced in obtaining information to resolve the ends of the shapes. Current efforts focus on circumferential shape sensing of live subjects and automatic digitization of sensed data.

  8. Instrumentation and process control development for in situ coal gasification. Seventeenth, eighteenth, and nineteenth quarterly reports, December 1978 through August 1979

    SciTech Connect

    Glass, R.E.

    1980-02-01

    The second phase of the Hanna IV In Situ Coal Gasification Test, Hanna IV-B, was initiated on April 20, 1979. The reverse combustion linking process was completed July 13, 1979, and gasification began July 28, 1979. Sandia Laboratories is providing support by fielding and monitoring diagnostic and remote monitoring instrumentation techniques. All techniques are supported by a minicomputer-based, field data acquisition system developed for this application which provides on-site, real-time reduction, analysis and display of the experimental data. Results to date show the development of at least three links, and the progress of the gasification front is being monitored. There have also been developments in hardware for use in the planned Hoe Creek III experiment, notably an inverted thermocouple string with a lateral transmission device. To support all field activities an in-house computing system with complete data base storage capability has been assembled.

  9. Methodological aspects of tear flow determination by means of a radioactive tracer.

    PubMed

    Sorensen, T; Jensen, F T

    1977-10-01

    Theoretical considerations on a simplified biological system representing the tear pathways lead to the assumption of an exponential pattern of elimination of tracer substances from the conjunctival sac. The tracer used in the present study was technetium, Tc99m, as sodium pertechnetate. The detection system consisted of a gamma camera coupled to a digital system, a minicomputer and a magnetic tape unit. After instillation of 10 microliter normal saline solution containing Tc99m the decay of activity was followed by means of an activity-time function curve to which exponential curves were approximated by the computer. As a parameter for tear flow the fractional turnover rate was calculated from 7 to 15 min after instillation. An initial faster elimination was found in the first 7 min following instillation. Corrections for background radiation, evaporation of water and transconjunctival transport of Tc99m were estimated. PMID:578633

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

    USGS Publications Warehouse

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

    1976-01-01

    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.

  11. MIDAS, prototype Multivariate Interactive Digital Analysis System, Phase 1. Volume 2: Diagnostic system

    NASA Technical Reports Server (NTRS)

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

    1974-01-01

    The MIDAS System is a third-generation, fast, multispectral recognition system able to keep pace with the large quantity and high rates of data acquisition from present and projected sensors. A principal objective of the MIDAS Program is to provide a system well interfaced with the human operator and thus to obtain large overall reductions in turn-around time and significant gains in throughout. The hardware and software generated in Phase I of the over-all program are described. The system contains a mini-computer to control the various high-speed processing elements in the data path and a classifier which implements an all-digital prototype multivariate-Gaussian maximum likelihood decision algorithm operating 2 x 105 pixels/sec. Sufficient hardware was developed to perform signature extraction from computer-compatible tapes, compute classifier coefficients, control the classifier operation, and diagnose operation. Diagnostic programs used to test MIDAS' operations are presented.

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

    NASA Technical Reports Server (NTRS)

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

    1974-01-01

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

  13. Computer systems for automatic earthquake detection

    USGS Publications Warehouse

    Stewart, S.W.

    1974-01-01

    U.S Geological Survey seismologists in Menlo park, California, are utilizing the speed, reliability, and efficiency of minicomputers to monitor seismograph stations and to automatically detect earthquakes. An earthquake detection computer system, believed to be the only one of its kind in operation, automatically reports about 90 percent of all local earthquakes recorded by a network of over 100 central California seismograph stations. The system also monitors the stations for signs of malfunction or abnormal operation. Before the automatic system was put in operation, all of the earthquakes recorded had to be detected by manually searching the records, a time-consuming process. With the automatic detection system, the stations are efficiently monitored continuously. 

  14. Automation of production of semiconductor power devices

    NASA Astrophysics Data System (ADS)

    Kyuts, R. V.; Toomsoo, G. K.

    1984-10-01

    An informational consultative automatic system for control of technological processes is being developed. Then automatic control systems for groups of technological processes are being developed, essentially with a computer base. Its accounting functions include tracking of parts, statistical analysis of product lots, inspection and correction for excessive reject rate. Its control functions include adaptive simulation of technological processes, with stabilization and correction, and predicting characteristics. The software consists of general and special programs. The hardware consists of modular computers with expanded memory on three magnetic disks and four magnetic tapes, workshop terminals with teletypes, and testers. The data processing part consists of minicomputer with peripheral equipment. The testing part includes means of transporting as well as heating and cooling the test samples, and inserting them into the test circuit adequate electrical contact.

  15. Digital resolver for helicopter model blade motion analysis

    NASA Technical Reports Server (NTRS)

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

    1992-01-01

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

  16. The spatial and logical organization of devices in an advanced industrial robot system

    NASA Technical Reports Server (NTRS)

    Ruoff, C. F.

    1980-01-01

    This paper describes the geometrical and device organization of a robot system which is based in part upon transformations of Cartesian frames and exchangeable device tree structures. It discusses coordinate frame transformations, geometrical device representation and solution degeneracy along with the data structures which support the exchangeable logical-physical device assignments. The system, which has been implemented in a minicomputer, supports vision, force, and other sensors. It allows tasks to be instantiated with logically equivalent devices and it allows tasks to be defined relative to appropriate frames. Since these frames are, in turn, defined relative other frames this organization provides a significant simplification in task specification and a high degree of system modularity.

  17. Automated optical navigation with application to Galileo

    NASA Astrophysics Data System (ADS)

    Klumpp, A. R.; Bon, B.; Damario, L. A.; Downing, G. P.; Frauenholz, R. B.; McReynolds, S. R.

    1980-08-01

    This paper presents an overview of an automated optical navigation (AON) system, a lower-cost, faster, earth-based stepping stone to onboard systems. AON provides estimation (orbit determination) and maneuver subsystems which are automatically linked to provide the fast response required by the Galileo mission, AON's first user. A real-time interactive executive schedules the subsystems to run concurrently or sequentially and enables interactive computer-graphics displays designed to speed evaluation and certification of navigation solutions. A compact trajectory integrator provides a favorable combination of speed and accuracy. Resident on a low-cost minicomputer and coded primarily in HAL/S, the NASA standard language for flight software, AON approaches a prototype for autonomous onboard navigation systems of the future.

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

    NASA Technical Reports Server (NTRS)

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

    1982-01-01

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

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

    NASA Technical Reports Server (NTRS)

    Faust, N.; Jordon, L.

    1981-01-01

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

  20. An image-processing system applied to earth-resource imagery

    NASA Technical Reports Server (NTRS)

    Carter, P.; Gardner, W. E.

    1977-01-01

    The Harwell Image Processing System (HIPS) has been adapted for processing earth-resource imagery in either film or tape format. Data from film are obtained using a computer-controlled flying-spot scanner. Local rapid interactive processing is based on a PDP 11/20 minicomputer which has suitable display facilities for immediate visual appraisal of results and also a fast data link to an IBM 370/168 computer complex. An extensive subroutine library is being assembled for data preprocessing and feature extraction. This chapter includes a discussion of the basic principles of image analysis, a description of the HIPS system, and finally, for illustrative purposes, a description of several simple software routines.

  1. CAMAPPLE: CAMAC interface to the Apple computer

    SciTech Connect

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

    1981-04-01

    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.

  2. A speech-to-noise ratio measurement algorithm

    NASA Astrophysics Data System (ADS)

    Sims, J. T.

    1985-11-01

    An algorithm to measure speech-to-noise ratios has been implemented on a minicomputer. The algorithm attributes the energy within each consecutive 20-ms frame of a speech-plus-noise waveform to either a speech or noise source. This discrimination process is based upon the known characteristics of frame energy histograms of such waveforms. In response to observed inaccuracies of this discrimination process in cases of low speech versus noise separation, a method of estimating the speech V(rms) of the signal is incorporated, which attempts to recover speech energy, 'masked' by noise. The algorithm's ability to track known speech-to-noise ratios on a decibel-for-decibel basis down to a ratio of approximately 5 dB has been demonstrated by experimentation.

  3. Berkeley automated supernova search

    SciTech Connect

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

    1981-01-01

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

  4. Modern control techniques for accelerators

    SciTech Connect

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

    1984-05-01

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

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

    NASA Technical Reports Server (NTRS)

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

    1981-01-01

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

  6. Tracing technology in the Association of Academic Health Sciences Libraries

    PubMed Central

    Guard, J. Roger; Peay, Wayne J.

    2003-01-01

    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. PMID:12883580

  7. TMAP4 User's Manual

    SciTech Connect

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

    1992-06-12

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

  8. TMAP4. Tritium Migration Analysis Program Version 4

    SciTech Connect

    Merrill, B.J.; Holland, D.F.; Jones, J.L.

    1991-06-12

    TMAP4 was developed as a safety analysis code, mainly to analyze tritium retention and loss in fusion reactor structures and systems during normal operational and accident conditions. It incorporates one-dimensional thermal and mass-diffusive transport and trapping calculations through structures and zero dimensional fluid transport between enclosures and across the interface between enclosures and structures. Diffusion structures may be linked together with other structures, and multiple structures may interact with an enclosure. A key feature is the ability to input problem definition parameters as constants, interpolation tables, or FORTRAN equations. The code is specifically intended for use under a DOS operating system on PC type minicomputers, but it has also been run successfully on workstations and mainframe computer systems. Use of the equation-input feature requires access to a FORTRAN-77 compiler, and a linker program is required.

  9. TMAP4 User`s Manual

    SciTech Connect

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

    1992-06-12

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

  10. Proposed technology and procurement policy for SNAP III. Final report, April-September 1986

    SciTech Connect

    Schneidewind, N.F.

    1986-10-01

    The purpose of this report is to suggest ideas for the technology and procurement policy that would be appropriate for SNAP III in the next decade. Both technology and procurement policy are considered because it would be difficult to implement some of the technology proposed in this report without a change in procurement policy. The report describes the recommended architecture of SNAP III and the software acquisitions and procurements policies to support the architecture. Major recommendations are: Transition from minicomputer to microcomputer system; Transition to proven commercial office system; Use local area network technology; Acquire mass storage capability; Acquire improved graphics capability; Consider automating ship -- shore communications, and start to develop a procurement policy to support the acquisition of the above technology.

  11. Industrial Applications Of Optical Shaft Encoders

    NASA Astrophysics Data System (ADS)

    Edmister, Brian W.

    1980-11-01

    The development of the microprocessor and mini-computer for industrial process control has made the optical shaft angle encoder a natural choice for a position feedback transducer. Many of these applications, however, require the encoder to operate reliably in extremely hostile environments. In response to this, the encoder manufacturer has been faced with reliability problems which fall into the following general categories: 1. Exposure to weather 2. Wide operating and storage temperature range 3. Exposure to corrosive chemicals 4. Severe shock and vibration 5. High electrical noise levels 6. Severe blows to encoder housing 7. Operation in explosive atmospheres Three of these applications expose the encoder to most of these environmental conditions: 1. A jack-up control position feedback for an offshore oil well drilling rig 2. A depth measurement system for oil well logging instrumentation 3. Elevation and azimuth feedback for a solar power plant heliostat

  12. Vibration in Planetary Gear Systems with Unequal Planet Stiffnesses

    NASA Technical Reports Server (NTRS)

    Frater, J. L.; August, R.; Oswald, F. B.

    1982-01-01

    An algorithm suitable for a minicomputer was developed for finding the natural frequencies and mode shapes of a planetary gear system which has unequal stiffnesses between the Sun/planet and planet/ring gear meshes. Mode shapes are represented in the form of graphical computer output that illustrates the lateral and rotational motion of the three coaxial gears and the planet gears. This procedure permits the analysis of gear trains utilizing nonuniform mesh conditions and user specified masses, stiffnesses, and boundary conditions. Numerical integration of the equations of motion for planetary gear systems indicates that this algorithm offers an efficient means of predicting operating speeds which may result in high dynamic tooth loads.

  13. Diagnosis of alcoholic cirrhosis with the right-to-left hepatic lobe ratio: concise communication

    SciTech Connect

    Shreiner, D.P.; Barlai-Kovach, M.

    1981-02-01

    Since scans of cirrhotic livers commonly show a reduction in size and colloid uptake of the right lobe, a quantitative measure of uptake was made using a minicomputer to determine total counts in regions of interest defined over each lobe. Right-to-left ratios were then compared in 103 patients. For normal paitents the mean ratio +- 1 s.d. was 2.85 +- 0.65, and the mean for patients with known cirrhosis was 1.08 +- 0.33. Patients with other liver diseases had ratios similar to the normal group. The normal range of the right-to-left lobe ratio was 1.55 to 4.15. The sensitivity of the ratio for alcoholic cirrhosis was 85.7% and the specificity was 100% in this patient population. The right-to-left lobe ratio was more sensitive and specific for alcoholic cirrhosis than any other criterion tested. An hypothesis is described to explain these results.

  14. Gettering of carbon dioxide by erbium thin films

    SciTech Connect

    Mehrhoff, T.K.

    1980-10-10

    The interaction of carbon dioxide and erbium thin films is characterized for temperatures in the region of 300 to 900/sup 0/C and partial pressure of carbon dioxide near 5 x 10/sup -7/ Torr. Dynamic film pumping speeds were measured against a mercury diffusion pump of known pumping speed and conductance. A quadrupole mass spectrometer was used to monitor the carbon dioxide flow which originated from a calibrated leak in the 10/sup -6/ standard cm/sup 3//s range. Data reduction was via a dedicated minicomputer with associated printer/plotter. Temperature ramp experiments with thin erbium films indicated a significant reaction above 300/sup 0/C. The reaction was preceded by the desorption of water vapor, hydrogen and nitrogen and/or carbon monoxide from the film surface.

  15. Interactive computer system to prepare borehole data for coal seam mapping

    SciTech Connect

    Hegde, S.S.

    1982-10-01

    The paper describes a method of building up a body of coal data that is accurate, precise, readily available and easy to manipulate. The system is a set of interactive computer procedures consisting of: (a) data gathering (core hole and geophysical logs) and standardised computer printouts; (b) graphic printouts of coded logs (log strips) using an on-line electrostatic plotter; (c) determination of seam continuity via relative movements of the log strips on an interactive graphic display terminal; (d) calculation of the seam parameters (mineable seam thickness, volume of in-seam dirt, ash and sulphur content of the raw or prepared product, roof and floor characteristics); (e) posting of seam parameters using an on-line drum plotter controlled by a microprocessor on-line to the mini-computer.

  16. Electron beam induced current technique using a scanning Auger microprobe

    SciTech Connect

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

    1984-07-01

    A scanning Auger microprobe (SAM) has been modified to detect and process electron beam induced currents (EBIC). The EBIC mode is incorporated as an integral part of the analytical instrument and operates in conjunction with secondary electron detection (SED) and Auger electron spectroscopy (AES) modes. A minicomputer scans the electron beam and acquires the EBIC data. Using the built-in software designed for Auger data analysis, the data are processed, displayed on a graphics terminal, and plotted on a graphics plotter. The technique has been applied to the study of a grain boundary region of a polycrystalline Si solar cell by extracting a noise-free signal and obtaining cell parameters such as diffusion length and surface recombination velocity in the vicinity of the grain boundary has been demonstrated.

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

    NASA Technical Reports Server (NTRS)

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

    1983-01-01

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

  18. Implementation of a Prototype Generalized Network Technology for Hospitals *

    PubMed Central

    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

    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.

  19. Who Wants to Be Moses? Information Leadership in the 1980s

    PubMed Central

    Jackson, Colonel T. F.

    1982-01-01

    The technology of computer systems and the need for their effective use poses a series of significant problems in the health care delivery environment. There is a profusion of hardware, significant decreases in cost coupled with more significant increases in capability, a need for adequate application and support software, and a dire shortage of programmers. The onslaught of microcomputers and stand-alone minicomputer systems pose a serious challenge to the development of cohesive, coordinated and interfaced institution wide systems. The differences in approach between word processing and data processing systems and the obvious need for their future compatibility sets up an arena for turf competition that has serious potential consequences. A blurring of the distinction between voice and data communication systems further complicates the situation. These problems, along with the competition with industry for data processing professionals, present a formidable challenge for leadership. This paper discusses this challenge and how it can be met.

  20. Acoustic monitoring of power-plant valves

    NASA Astrophysics Data System (ADS)

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

    1982-06-01

    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.

  1. Data logger for the 34-meter vertical axis wind turbine test bed

    SciTech Connect

    Ralph, M.E.

    1990-04-01

    This report discusses the purpose and requirements that were established for the data logger at the 34-m diameter, research- oriented vertical axis wind turbine, the Test Bed, which Sandia National Laboratories built at Bushland, Texas. The data logger is a minicomputer-based system that collects data from 35 channels, displays the collected data, and records them on a hard disc. Both the hardware and software that make up the data logger are also described, and the operator's instructions and the operating system commands and procedure files are appended. The data logger is used to obtain long-term data to characterize the wind at the site of the turbine, record the performance data of the control system, obtain a continuous record of events at the test sire, consolidate displays for the test engineer, and provide a display of current information for visitors to the site. 7 refs., 3 figs., 4 tabs.

  2. Study of cryogenic propellant systems for loading the space shuttle

    NASA Technical Reports Server (NTRS)

    Voth, R. O.; Steward, W. G.; Hall, W. J.

    1974-01-01

    Computer programs were written to model the liquid oxygen loading system for the space shuttle. The programs allow selection of input data through graphic displays which schematically depict the part of the system being modeled. The computed output is also displayed in the form of graphs and printed messages. Any one of six computation options may be selected. The first four of these pertain to thermal stresses, pressure surges, cooldown times, flow rates and pressures during cooldown. Options five and six deal with possible water hammer effects due to closing of valves, steady flow and transient response to changes in operating conditions after cooldown. Procedures are given for operation of the graphic display unit and minicomputer.

  3. Diagnostic control, data acquisition and data processing at MFTF-B (Mirror Fusion Test Facility)

    SciTech Connect

    Preckshot, G.G.

    1986-01-01

    Diagnostic instruments at the Mirror Fusion Test Facility (MFTF-B) are operated by a distributed computer system which provides an integrated control, data acquisition and data processing interface. Instrument control settings, operator inputs and lists of data to be acquired are combined with data acquired by instrument data recorders, to be used downstream by data processing codes; data processing programs are automatically informed of operator control and setpoint actions without operator intervention. The combined diagnostic control and results presentation interface is presented to experimentalist users by a network of high-resolution graphics workstations. Control coordination, data processing and database management are handled by a shared-memory network of 32-bit super minicomputers. Direct instrument control, data acquisition, data packaging and instrument status monitoring are performed by a network of dedicated local control microcomputers.

  4. Time-resolved EPR spectroscopy in a Unix environment.

    PubMed

    Lacoff, N M; Franke, J E; Warden, J T

    1990-02-01

    A computer-aided time-resolved electron paramagnetic resonance (EPR) spectrometer implemented under version 2.9 BSD Unix was developed by interfacing a Varian E-9 EPR spectrometer and a Biomation 805 waveform recorder to a PDP-11/23A minicomputer having MINC A/D and D/A capabilities. Special problems with real-time data acquisition in a multiuser, multitasking Unix environment, addressing of computer main memory for the control of hardware devices, and limitation of computer main memory were resolved, and their solutions are presented. The time-resolved EPR system and the data acquisition and analysis programs, written entirely in C, are described. Furthermore, the benefits of utilizing the Unix operating system and the C language are discussed, and system performance is illustrated with time-resolved EPR spectra of the reaction center cation in photosystem 1 of green plant photosynthesis. PMID:2155913

  5. Culvert analysis program for indirect measurement of discharge

    USGS Publications Warehouse

    Fulford, Janice M.

    1993-01-01

    A program based on the U.S. Geological Survey (USGS) methods for indirectly computing peak discharges through culverts allows users to employ input data formats used by the water surface profile program (WSPRO). The program can be used to compute discharge rating surfaces or curves that describe the behavior of flow through a particular culvert or to compute discharges from measurements of upstream of the gradually varied flow equations and has been adapted slightly to provide solutions that minimize the need for the user to determine between different flow regimes. The program source is written in Fortran 77 and has been run on mini-computers and personal computers. The program does not use or require graphics capability, a color monitor, or a mouse.

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

    SciTech Connect

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

    1983-03-01

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

  7. Acoustic monitoring of power plant valves

    NASA Astrophysics Data System (ADS)

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

    1982-06-01

    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: boiling water reactor (BWR) three-stage, pilot-operated safety/relief valves and pressurized water reactor (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 emission created by the leak noise were monitored and calibrated to indicate incipient activation of the safety/relief valve. Hydrodynamic, vibration, control and process signals frm PWR feedwater control valves were monitored by a mini-computer based surveillance system.

  8. SIFT - Design and analysis of a fault-tolerant computer for aircraft control. [Software Implemented Fault Tolerant systems

    NASA Technical Reports Server (NTRS)

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

    1978-01-01

    SIFT (Software Implemented Fault Tolerance) is an ultrareliable computer for critical aircraft control applications that achieves fault tolerance by the replication of tasks among processing units. The main processing units are off-the-shelf minicomputers, with standard microcomputers serving as the interface to the I/O system. Fault isolation is achieved by using a specially designed redundant bus system to interconnect the processing units. Error detection and analysis and system reconfiguration are performed by software. Iterative tasks are redundantly executed, and the results of each iteration are voted upon before being used. Thus, any single failure in a processing unit or bus can be tolerated with triplication of tasks, and subsequent failures can be tolerated after reconfiguration. Independent execution by separate processors means that the processors need only be loosely synchronized, and a novel fault-tolerant synchronization method is described.

  9. CCD image data acquisition system for optical astronomy.

    NASA Astrophysics Data System (ADS)

    Bhat, P. N.; Patnaik, K.; Kembhavi, A. K.; Patnaik, A. R.; Prabhu, T. P.

    1990-11-01

    A complete image processing system based on a charge coupled device (CCD) has been developed at TIFR, Bombay, for use in optical astronomy. The system consists of a P-8600/B GEC CCD chip, a CCD controller, a VAX 11/725 mini-computer to carry out the image acquisition and display on a VS-11 monitor. All the necessary software and part of the hardware were developed locally, integrated together and installed at the Vainu Bappu Observatory at Kavalur. CCD as an imaging device and its advantages over the conventional photographic plate is briefly reviewed. The acquisition system is described in detail. The preliminary results are presented and the future research programme is outlined.

  10. Satellite surveillance and control system

    NASA Astrophysics Data System (ADS)

    Kondoh, K.; Izumisawa, T.; Nakatani, I.; Nagai, Y.

    1980-08-01

    A satellite surveillance and control system is required to perform communication continuously and accurately. The conventional system uses a large computer system. ECL finds a simple algorithm for the orbit calculation utilizing the feature of the satellite position stationarity and succeeded in replacing the large computer system by a minicomputer. The software is less than 1/10 that of the conventional system. The project was carried out in two steps. The first step was to acquire satellite control experience by constructing a conventional system. The second step was to realize the new system. This paper describes an outline of these two systems and shows the superiority of the new system to the conventional one.

  11. A high-performance modular data system for Fourier transform ion cyclotron resonance mass spectrometry.

    PubMed

    Senko, M W; Canterbury, J D; Guan, S; Marshall, A G

    1996-01-01

    The three major components of a Fourier-transform ion cyclotron resonance (FT-ICR) mass spectrometer include the vacuum system (including ion source), the magnet and a data system capable of performing the necessary instrument control for desired experiments. Most previous FTICR systems have used commercial data systems based on custom-built electronics controlled by proprietary mini-computers developed in the early 1980's. Here we present a high-performance data system based on a personal computer running user-friendly Windows software and readily available commercial components contained in a VXI chassis and a minimal complement of simple custom electronics. The system uses a VXI pattern generator to control all aspects of the experiment. The flexibility of the pattern generator allows for performance of all current FTICR experimental sequences. PMID:8953786

  12. Software for Digital Acquisition System and Application to Environmental Monitoring

    NASA Technical Reports Server (NTRS)

    Copeland, G. E.

    1975-01-01

    Criteria for selection of a minicomputer for use as a core resident acquisition system were developed for the ODU Mobile Air Pollution Laboratory. A comprehensive data acquisition program named MONARCH was instituted in a DEC-8/E-8K 12-bit computer. Up to 32 analog voltage inputs are scanned sequentially, converted to BCD, and then to actual numbers. As many as 16 external devices (valves or any other two-state device) are controlled independently. MONARCH is written as a foreground-background program, controlled by an external clock which interrupts once per minute. Transducer voltages are averaged over user specified time intervals and, upon completion of any desired time sequence, outputted are: day, hour, minute, second; state of external valves; average value of each analogue voltage (E Format); as well as standard deviations of these values. Output is compatible with any serially addressed media.

  13. Wind tunnel evaluation of air-foil performance using simulated ice shapes

    NASA Technical Reports Server (NTRS)

    Bragg, M. B.; Zaguli, R. J.; Gregorek, G. M.

    1982-01-01

    A two-phase wind tunnel test was conducted in the 6 by 9 foot Icing Research Tunnel (IRT) at NASA Lewis Research Center to evaluate the effect of ice on the performance of a full scale general aviation wing. In the first IRT tests, rime and glaze shapes were carefully documented as functions of angle of attack and free stream conditions. Next, simulated ice shapes were constructed for two rime and two glaze shapes and used in the second IRT tunnel entry. The ice shapes and the clean airfoil were tapped to obtain surface pressures and a probe used to measure the wake characteristics. These data were recorded and processed, on-line, with a minicomputer/digital data acquisition system. The effect of both rime and glaze ice on the pressure distribution, Cl, Cd, and Cm are presented.

  14. High resolution Michelson interferometer for airborne infrared astronomical observations. 1: Concept and performance.

    PubMed

    Baluteau, J P; Anderegg, M; Moorwood, A F; Coron, N; Beckman, J E; Bussoletti, E; Hippelein, H H

    1977-07-01

    A Michelson interferometer has been built for use with the 91-cm telescope on NASA's Gerard P. Kuiper Airborne Observatory primarily to measure ir line emission from H 11 regions. Operation is in the rapid scan mode, and the achievable resolution is 0.02 cm(-1) in the wavelength range from 10 micro to around 300 micro. A minicomputer is used to provide on-line spectrum displays and to control and monitor the instrument performance. The design and use of the instrument is discussed, and a comparison is made between the theoretical performance and that actually achieved on the first flights when measurements of line emission from the Orion nebula and from the atmosphere were made. PMID:20168819

  15. Computer Generated Anesthesia Records

    PubMed Central

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

    1980-01-01

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

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

    NASA Technical Reports Server (NTRS)

    Estes, John E.; Star, Jeffrey L.

    1989-01-01

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

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

    NASA Technical Reports Server (NTRS)

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

    1981-01-01

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

  18. The GEMPAK Barnes interactive objective map analysis scheme. [General Meteorological Software Package

    NASA Technical Reports Server (NTRS)

    Koch, S. E.; Kocin, P. J.; Desjardins, M.

    1983-01-01

    The analysis scheme and meteorological applications of the GEMPAK data analysis and display software system developed by NASA are described. The program was devised to permit objective, versatile, and practical analysis of satellite meteorological data using a minicomputer and a display system with graphics capability. A data area can be selected within the data file for the globe, and data-sparse regions can be avoided. Distances between observations and the nearest observation points are calculated in order to avoid errors when determining synoptic weather conditions. The Barnes (1973) successive correction method is employed to restore the amplitude of small yet resolvable wavelengths suppressed in an initial filtering pass. The rms deviation is then calculated in relation to available measured data. Examples are provided of treatment of VISSR data from the GOES satellite and a study of the impact of incorrect cloud height data on synoptic weather field analysis.

  19. Development of a Texas Statewide Information System for Emergency Medical Services

    PubMed Central

    Renaud, Yves; Roule, Pascale; Eaton, David

    1989-01-01

    This paper describes the development of TEXEMS, a statewide information system for two state agencies and over a thousand emergency medical service providers in Texas. The system automates collection, transfer, and analysis of hundreds of variables of information concerning calls for emergency medical care and responses of pre-hospital medical providers. The software incorporates subroutines that provide internal quality control for data entry, automated information transfer via modem and telephone lines, and user-friendly reporting for system management at local, regional, or state levels. Four unusual elements of the TEXEMS system include: (a) a minimum data set to provide a basis for standardized local record keeping and data collection; (b) software to allow local customized databases with subsequent output of standardized files to be included in the state system; (c) automated data transfer into a statewide database; and (d) portability of software within diverse MS-DOS, Macintosh, and Unix micro- and mini-computer operating systems.

  20. Computer code to interchange CDS and wave-drag geometry formats

    NASA Technical Reports Server (NTRS)

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

    1986-01-01

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

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

    NASA Technical Reports Server (NTRS)

    Meisch, A. J.

    1972-01-01

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

  2. An interactive technique to generate digital elevation data using a vidicon camera

    NASA Technical Reports Server (NTRS)

    Sircar, J. K.; Ragan, R. M.

    1984-01-01

    A technique is proposed for the semi-automatic digitization of topographic maps using a vidicon camera interfaced with a mini-computer system. The required input is a black and white map that shows only contour lines and corresponding elevation values such as the advance prints of 7.5 minute USGS topographic sheets. A set of image processing algorithms is implemented on an image of the contour map acquired by a vidicon camera. The system developed performs extraction of contour lines, tagging elevation values and subsequent interpolation of elevations to produce, in 5 sec. x 5 sec. intervals of latitude and longitude, digital elevation matrices. The interpolation of elevations for non-contour points is achieved using a steepest descent algorithm. A communications capability allows the final data to be transferred over telephone lines to an off-site unit such as the floppy disk or a micro-computer.

  3. A general interactive system for compositing digital radar and satellite data

    NASA Technical Reports Server (NTRS)

    Ghosh, K. K.; Chen, L. C.; Faghmous, M.; Heymsfield, G. M.

    1981-01-01

    Reynolds and Smith (1979) have considered the combined use of digital weather radar and satellite data in interactive systems for case study analysis and forecasting. Satellites view the top of clouds, whereas radar is capable of observing the detailed internal structure of clouds. The considered approach requires the use of a common coordinate system. In the present investigation, it was decided to use the satellite coordinate system as the base system in order to maintain the fullest resolution of the satellite data. The investigation is concerned with the development of a general interactive software system called RADPAK for remapping and analyzing conventional and Doppler radar data. RADPAK is implemented as a part of a minicomputer-based image processing system, called Atmospheric and Oceanographic Image Processing System. Attention is given to a general description of the RADPAK system, remapping methodology, and an example of satellite remapping.

  4. Advanced application flight experiment breadboard pulse compression radar altimeter program

    NASA Technical Reports Server (NTRS)

    1976-01-01

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

  5. Contribution of the Spacelab data management system to lower cost space research

    NASA Technical Reports Server (NTRS)

    Burger, J. J.; Tanner, E. R.

    1976-01-01

    This paper reviews the design and operation of the Spacelab data management system as it has evolved. Significant improvements and extensions of the original baseline system have been incorporated and will be discussed. They include the capability for the remote control of Spacelab subsystems, improved remote data acquisition units, a high-rate digital data multiplexer, and an improved high-rate digital recorder. Emphasis will be placed on the overall system aspects, including considerations on the use of minicomputers as an adjunct to the basic Spacelab data system. The approach for experiment related software production and integration will be addressed as well. The paper focuses on the contributions of the data management system in reducing the cost of research in Spacelab.

  6. MIDAS, prototype Multivariate Interactive Digital Analysis System, phase 1. Volume 1: System description

    NASA Technical Reports Server (NTRS)

    Kriegler, F. J.

    1974-01-01

    The MIDAS System is described as a third-generation fast multispectral recognition system able to keep pace with the large quantity and high rates of data acquisition from present and projected sensors. A principal objective of the MIDAS program is to provide a system well interfaced with the human operator and thus to obtain large overall reductions in turnaround time and significant gains in throughput. The hardware and software are described. The system contains a mini-computer to control the various high-speed processing elements in the data path, and a classifier which implements an all-digital prototype multivariate-Gaussian maximum likelihood decision algorithm operating at 200,000 pixels/sec. Sufficient hardware was developed to perform signature extraction from computer-compatible tapes, compute classifier coefficients, control the classifier operation, and diagnose operation.

  7. Spacecraft tracking from the U.K. IRAS/AMPTE Control Centre

    NASA Astrophysics Data System (ADS)

    Holdaway, R.; McPherson, P.; Ely, R.

    1985-10-01

    The U.K. Science and Engineering Research Council operates a spacecraft Operations Control Centre at its Rutherford Appleton Laboratory at Chilton in Oxfordshire. This paper describes tracking aspects of the Control Centre during operations of the IRAS and AMPTE missions. Tracking is carried out using a 12 meter antenna with electric drive and S-band monopulse feed. A static pointing error of less than 3 arcminutes is achieved. The antenna is controlled by software on a minicomputer which has access to error and AGC signals from the receivers as well as encoder and status outputs from the antenna. The software is included in the control servo loop, and outputs velocity requests to the motor drive system. Descriptions are given of the tracking system hardware, position control, tracking modes (program and autotrack), orbit predictions, operator interface, and an analysis of accuracies for the two missions.

  8. Flexible missile autopilot design studies with PC-MATLAB/386

    NASA Technical Reports Server (NTRS)

    Ruth, Michael J.

    1989-01-01

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

  9. Oxygen analyzer

    DOEpatents

    Benner, William H.

    1986-01-01

    An oxygen analyzer which identifies and classifies microgram quantities of oxygen in ambient particulate matter and for quantitating organic oxygen in solvent extracts of ambient particulate matter. A sample is pyrolyzed in oxygen-free nitrogen gas (N.sub.2), and the resulting oxygen quantitatively converted to carbon monoxide (CO) by contact with hot granular carbon (C). Two analysis modes are made possible: (1) rapid determination of total pyrolyzable oxygen obtained by decomposing the sample at 1135.degree. C., or (2) temperature-programmed oxygen thermal analysis obtained by heating the sample from room temperature to 1135.degree. C. as a function of time. The analyzer basically comprises a pyrolysis tube containing a bed of granular carbon under N.sub.2, ovens used to heat the carbon and/or decompose the sample, and a non-dispersive infrared CO detector coupled to a mini-computer to quantitate oxygen in the decomposition products and control oven heating.

  10. Oxygen analyzer

    DOEpatents

    Benner, W.H.

    1984-05-08

    An oxygen analyzer which identifies and classifies microgram quantities of oxygen in ambient particulate matter and for quantitating organic oxygen in solvent extracts of ambient particulate matter. A sample is pyrolyzed in oxygen-free nitrogen gas (N/sub 2/), and the resulting oxygen quantitatively converted to carbon monoxide (CO) by contact with hot granular carbon (C). Two analysis modes are made possible: (1) rapid determination of total pyrolyzable obtained by decomposing the sample at 1135/sup 0/C, or (2) temperature-programmed oxygen thermal analysis obtained by heating the sample from room temperature to 1135/sup 0/C as a function of time. The analyzer basically comprises a pyrolysis tube containing a bed of granular carbon under N/sub 2/, ovens used to heat the carbon and/or decompose the sample, and a non-dispersive infrared CO detector coupled to a mini-computer to quantitate oxygen in the decomposition products and control oven heating.

  11. Laboratory procedures used in the hot corrosion project

    SciTech Connect

    Jeys, T.R.

    1980-04-08

    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.

  12. Automatic continuum analysis of reflectance spectra

    NASA Technical Reports Server (NTRS)

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

    1987-01-01

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

  13. A statistical data analysis and plotting program for cloud microphysics experiments

    NASA Technical Reports Server (NTRS)

    Jordan, A. J.

    1981-01-01

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

  14. Visible and infrared spin scanning radiometer /VISSR/ atmospheric sounder /VAS/ ground data system

    NASA Technical Reports Server (NTRS)

    Dalton, J. T.; Jamros, R. K.; Helfer, D. P.; Howell, D. R.

    1981-01-01

    The interactive system developed at NASA/Goddard Space Flight Center to receive data from the infrared radiometer on GOES-4 in near real time and to perform interactive display and analysis of the 12-channel infrared imagery is described. The system is minicomputer based and uses a menu approach in guiding the analyst through spacecraft instrument programming, area and band selection, image acquisition, enhancement, analysis, and presentation of results. The system is linked by dual port disks to Goddard's Atmospheric and Oceanographic Information Processing System for comparing the sounding results with parameters derived from conventional data and from time lapse analysis of visible and IR imagery from other geostationary satellites. It is pointed out that the system hardware and software are being expanded to add capabilities for the integration and assimilation of VAS data with data from other sources, the comparison of severe storm observations from space with special ground network data, and the development of diagnostic models.

  15. Development of a multiplane multispeed balancing system for turbine systems

    NASA Technical Reports Server (NTRS)

    Martin, M. R.

    1984-01-01

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

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

    SciTech Connect

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

    1982-08-01

    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.

  17. Multilingual Translation Techniques in the Analysis of Narrative Medical Text

    PubMed Central

    Moore, G. William; Miller, Robert E.; Hutchins, Grover M.; Riede, U. N.; Polacsek, Richard A.

    1985-01-01

    The feasibility of computer translation of scientific and medical documents is controversial. This report describes a minicomputer-based translation system (TRANSOFT) that employs word order rearrangement followed by word-for-word translation and resolution of ambiguities based on context. This translation system was applied to an entire medical textbook written in German and to short medical texts written in Spanish, Turkish, Hungarian, and Romanized Japanese. Results suggest the versatility of TRANSOFT for narrowly defined translation problems. As foreign language medical documents and medical records become increasingly available in computer readable form through word processing, computerized typesetting, and hospital information systems, computer translation methods may provide a rapid and inexpensive means of obtaining draft translations.

  18. Scheduler software for tracking and data relay satellite system loading analysis: User manual and programmer guide

    NASA Technical Reports Server (NTRS)

    Craft, R.; Dunn, C.; Mccord, J.; Simeone, L.

    1980-01-01

    A user guide and programmer documentation is provided for a system of PRIME 400 minicomputer programs. The system was designed to support loading analyses on the Tracking Data Relay Satellite System (TDRSS). The system is a scheduler for various types of data relays (including tape recorder dumps and real time relays) from orbiting payloads to the TDRSS. Several model options are available to statistically generate data relay requirements. TDRSS time lines (representing resources available for scheduling) and payload/TDRSS acquisition and loss of sight time lines are input to the scheduler from disk. Tabulated output from the interactive system includes a summary of the scheduler activities over time intervals specified by the user and overall summary of scheduler input and output information. A history file, which records every event generated by the scheduler, is written to disk to allow further scheduling on remaining resources and to provide data for graphic displays or additional statistical analysis.

  19. AI tools in computer based problem solving

    NASA Technical Reports Server (NTRS)

    Beane, Arthur J.

    1988-01-01

    The use of computers to solve value oriented, deterministic, algorithmic problems, has evolved a structured life cycle model of the software process. The symbolic processing techniques used, primarily in research, for solving nondeterministic problems, and those for which an algorithmic solution is unknown, have evolved a different model, much less structured. Traditionally, the two approaches have been used completely independently. With the advent of low cost, high performance 32 bit workstations executing identical software with large minicomputers and mainframes, it became possible to begin to merge both models into a single extended model of computer problem solving. The implementation of such an extended model on a VAX family of micro/mini/mainframe systems is described. Examples in both development and deployment of applications involving a blending of AI and traditional techniques are given.

  20. AutoCAD application upgrades power system analysis programs

    SciTech Connect

    Schlabbach, J. )

    1991-04-01

    AutoCAD is a widely applied program for computer-aided design and supports a number of engineering disciplines. Installation on a personal computer is as simple as on mainframes, giving engineers powerful tools at reasonable prices. In the field of electric power engineering (in particular, power system analysis), several program packages with graphics are available. In the application describes in this article, Lahmeyer International (LI) has a complete package of power system analysis programs. These programs are widely in use in German utilities. They were developed some years ago for use on mainframes and minicomputers. This article describes a simple method to upgrade those programs with graphics by the application of the described firmware. The method was then included in the development of other programs, such as for the permissible loading of overhead lines and underground cables. A variety of other applications are available.

  1. Computer program compatible with a laser nephelometer

    NASA Technical Reports Server (NTRS)

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

    1975-01-01

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

  2. The History of the Data Systems AutoChemist® (ACH) and AutoChemist-PRISMA (PRISMA®): from 1964 to 1986

    PubMed Central

    2014-01-01

    Summary Objectives This paper presents the history of data system development steps (1964 – 1986) for the clinical analyzers AutoChemist®, and its successor AutoChemist PRISMA® (PRogrammable Individually Selective Modular Analyzer). The paper also partly recounts the history of development steps of the minicomputer PDP 8 from Digital Equipment. The first PDP 8 had 4 core memory boards of 1 K each and was large as a typical oven baking sheet and about 10 years later, PDP 8 was a “one chip microcomputer” with a 32 K memory chip. The fast developments of PDP 8 come to have a strong influence on the development of the data system for AutoChemist. Five major releases of the software were made during this period (1-5 MIACH). Results The most important aims were not only to calculate the results, but also be able to monitor their quality and automatically manage the orders, store the results in digital form for later statistical analysis and distribute the results to the physician in charge of the patient using thesame computer as the analyzer. Another result of the data system was the ability to customize AutoChemist to handle sample identification by using bar codes and the presentation of results to different types of laboratories. Conclusions Digital Equipment launched the PDP 8 just as a new minicomputer was desperately needed. No other known alternatives were available at the time. This was to become a key success factor for AutoChemist. That the AutoChemist with such a high capacity required a computer for data collection was obvious already in the early 1960s. That computer development would be so rapid and that one would be able to accomplish so much with a data system was even suspicious at the time. In total, 75; AutoChemist (31) and PRISMA (44) were delivered Worldwide The last PRISMA was delivered in 1987 to the Veteran Hospital Houston, TX USA PMID:24853032

  3. Evolution of the Mobile Information SysTem (MIST)

    NASA Technical Reports Server (NTRS)

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

    2008-01-01

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

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

    USGS Publications Warehouse

    Stiltner, G.J.

    1990-01-01

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

  5. Parallel computing in quantum chemistry -- Message passing and beyond for a general ab initio program system

    SciTech Connect

    Lischka, H.; Dachsel, H.; Shepard, R.; Harrison, R.J.

    1994-12-31

    One of the most prominent aims in Computational Chemistry is the modeling of chemical reactions and the prediction of molecular properties. Quantum chemical methods are used for the calculation of molecular structures, spectra, reaction energy profiles and many other interesting quantities. Nowadays, the accuracy of the theoretical calculations can compete to an increasing extent with the experimental one. A great variety of quantum chemical methods exist ranging from the standard Hartree-Fock theory to sophisticated electron correlation approaches. From a computational point of view all these methods require rather lengthy and complicated program codes and have to handle a large amount of data to be stored on external devices. In the simplest case, the Hartree-Fock (SCF) method, ``direct`` algorithms have eliminated the I/O and storage bottleneck and have opened the way to parallel implementations. For post-Hartree-Fock methods the situation is much more complicated as will be demonstrated below. Therefore, most of the previous attempts in parallelizing quantum chemical ab initio programs concentrated on SCF methods. The authors investigations presented here are a continuation of their previous work on the parallelization of the COLUMBUS program system. The COLUMBUS program is based on the multireference single- and double-excitation configuration interaction (MRSDCI) approach. It is very portable and runs on a large variety of computers including numerous Unix-based workstations, VAX/VMS minicomputers, IBM mainframes and Cray supercomputers.

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

    SciTech Connect

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

    1984-04-01

    A combination of advanced modeling techniques and modern, special-purpose peripheral minicomputer technology is presented which affords realistic predictions of plant transient and severe off-normal events in LWR power plants through on-line simulations at a speed ten times faster than actual process speeds. Results are shown for a BWR plant simulation. The mathematical models account for nonequilibrium, nonhomogeneous two-phase flow effects in the coolant, for acoustical effects in the steam line and for the dynamics of the recirculation loop and feedwater train. Point kinetics incorporate reactivity feedback due to void fraction, fuel temperature, coolant temperature, and boron concentration. Control systems and trip logic are simulated for the nuclear steam supply system. The AD10 of Applied Dynamics International is the special-purpose peripheral processor. It is specifically designed for high-speed digital system simulation, accommodates hardware (instrumentation) in the input/output loop, and operates interactively on-line, like an analog computer. Results are shown to demonstrate computing capacity, accuracy, and speed. Simulation speeds have been achieved which are orders of magnitude faster than those of a CDC-7600 mainframe computer or ten times faster than real-time speed.

  7. Three-axis electron-beam test facility

    NASA Technical Reports Server (NTRS)

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

    1981-01-01

    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.

  8. Three-axis electron-beam test facility

    NASA Astrophysics Data System (ADS)

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

    1981-03-01

    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.

  9. Planning for library automation using MINISIS.

    PubMed

    Sly, M

    1983-04-01

    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

  10. Improvements of the electrophoretic mobility test to measure lymphocyte sensitization.

    PubMed

    Zwergel, T; Nitzschke, U; Franke, F; Lampert, F

    1978-07-01

    The Electrophoretic Mobility (EM)-test was performed in 316 children to examine their lymphocyte sensitization to a common antigen by measuring the mobility of special indicator cells. The results indicate that this test can serve as an additional help in differential diagnosis of malignant and non-malignant diseases. Measurements in the cytopherometer were facilitated by introducing several technical modifications: 1) The original method of timing with a stopwatch was replaced by two electric watches electrically combined with the cytopherometer. Thus individual faults were reduced. The next improvement of timing at the cytopherometer consisted in the construction of an electronic controller and stopwatch in combination with a minicomputer, data print out, and tape recorder in order to get more reliable results. 2) Further automatic recording of the data is time-sparing and useful for correct evaluation of the EM-test. That can be done now directly on-line in a calculator with a program developed in our laboratory. 3) By using a television monitor for the observation of the indicator particles an additional simplification is possible. PMID:692441

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

    NASA Technical Reports Server (NTRS)

    Rasmussen, D.

    1976-01-01

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

  12. Integration of autonomous systems for remote control of data acquisition and diagnostics in the TJ-II device

    SciTech Connect

    Vega, J.; Mollinedo, A.; Lopez, A.; Pacios, L.

    1997-01-01

    The data acquisition system for TJ-II will consist of a central computer, containing the data base of the device, and a set of independent systems (personal computers, embedded ones, workstations, minicomputers, PLCs, and microprocessor systems among others), controlling data collection, and automated diagnostics. Each autonomous system can be used to isolate and manage specific problems in the most efficient manner. These problems are related to data acquisition, hard ({mu}s{endash}ms) real time requirements, soft (ms{endash}s) real time requirements, remote control of diagnostics, etc. In the operation of TJ-II, the programming of systems will be carried out from the central computer. Coordination and synchronization will be performed by linking systems to local area networks. Several Ethernet segments and FDDI rings will be used for these purposes. Programmable logic controller devices (PLCs) used for diagnostic low level control will be linked among them through a fast serial link, the RS485 Profibus standard. One VME crate, running on the OS-9 real time operating system, will be assigned as a gateway, so as to connect the PLCs based systems with an Ethernet segment. {copyright} {ital 1997 American Institute of Physics.}

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

    SciTech Connect

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

    1981-09-01

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

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

    PubMed

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

    1993-08-01

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

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

    SciTech Connect

    Not Available

    1982-09-01

    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.

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

    SciTech Connect

    Hasanul Basher, A.M.

    1993-09-01

    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.

  17. Spent Fuel Test - Climax data acquisition system operations manual

    SciTech Connect

    Nyholm, R.A.

    1983-01-01

    The Spent Fuel Test-Climax (SFT-C) is a test of the retrievable, deep geologic storage of commercially generated, spent nuclear reactor fuel in granite rock. Eleven spent fuel assemblies, together with 6 electrical simulators and 20 guard heaters, are emplaced 420 m below the surface in the Climax granite at the US Department of Energy Nevada Test Site. On June 2, 1978, Lawrence Livermore National Laboratory (LLNL) secured funding for the SFT-C, and completed spent fuel emplacement May 28, 1980. The multi-year duration test is located in a remote area and is unattended much of the time. An extensive array of radiological safety and geotechnical instrumentation is deployed to monitor the test performance. A dual minicomputer-based data acquisition system (DAS) collects and processes data from more than 900 analog instruments. This report documents the software element of the LLNL developed SFT-C Data Acquisition System. It defines the operating system and hardware interface configurations, the special applications software and data structures, and support software.

  18. Spent fuel test. Climax data acquisition system integration report

    SciTech Connect

    Nyholm, R.A.; Brough, W.G.; Rector, N.L.

    1982-06-01

    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.

  19. Development and operating experience of a BWR plant surveillance and diagnosis system using noise analysis

    SciTech Connect

    Takeuchi, E.; Hirakawa, I.; Nanba, H.; Kanemoto, S.

    1987-01-01

    With the increase in nuclear power plant construction and operation experience, plant reliability and availability have been improved to a very high level in Japan. There have seldom been unexpected plant power trips in recent years. In order to maintain this high reliability, it is important to use a system to detect an anomaly at an early stage and eliminate the cause of the anomaly as soon as possible by watching plant operating status. To attain this, the authors have developed an on line plant surveillance and diagnosis system for a boiling water reactor (BWR) plant. This system is composed of a high-performance minicomputer (TOSBAC 7/70) with an advanced man/machine interface. It can survey behavior for a large number of plant signals using various digital signal-processing techniques. The system's monitored objects are the reactor core, jet pumps, and control system dynamics. The system monitors the behavior of -- 130 signals, covering in-core neutron flux signals, process signals such as flow or pressure, jet pump flow signals, and internal signals in control systems.

  20. SCAILET: An intelligent assistant for satellite ground terminal operations

    NASA Technical Reports Server (NTRS)

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

    1993-01-01

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

  1. History of Robotic and Remotely Operated Telescopes

    NASA Astrophysics Data System (ADS)

    Genet, Russell M.

    2011-03-01

    While automated instrument sequencers were employed on solar eclipse expeditions in the late 1800s, it wasn't until the 1960s that Art Code and associates at Wisconsin used a PDP minicomputer to automate an 8-inch photometric telescope. Although this pioneering project experienced frequent equipment failures and was shut down after a couple of years, it paved the way for the first space telescopes. Reliable microcomputers initiated the modern era of robotic telescopes. Louis Boyd and I applied single board microcomputers with 64K of RAM and floppy disk drives to telescope automation at the Fairborn Observatory, achieving reliable, fully robotic operation in 1983 that has continued uninterrupted for 28 years. In 1985 the Smithsonian Institution provided us with a suburb operating location on Mt. Hopkins in southern Arizona, while the National Science Foundation funded additional telescopes. Remote access to our multiple robotic telescopes at the Fairborn Observatory began in the late 1980s. The Fairborn Observatory, with its 14 fully robotic telescopes and staff of two (one full and one part time) illustrates the potential for low operating and maintenance costs. As the information capacity of the Internet has expanded, observational modes beyond simple differential photometry opened up, bringing us to the current era of real-time remote access to remote observatories and global observatory networks. Although initially confined to smaller telescopes, robotic operation and remote access are spreading to larger telescopes as telescopes from afar becomes the normal mode of operation.

  2. Final report on the FMIT Control System

    SciTech Connect

    Johnson, J.A.

    1985-01-01

    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.

  3. David Florida Laboratory Thermal Vacuum Data Processing System

    NASA Technical Reports Server (NTRS)

    Choueiry, Elie

    1994-01-01

    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.

  4. A new approach for data acquisition at the JPL space simulators

    NASA Technical Reports Server (NTRS)

    Fisher, Terry C.

    1992-01-01

    In 1990, a personal computer based data acquisition system was put into service for the Space Simulators and Environmental Test Laboratory at the Jet Propulsion Laboratory (JPL) in Pasadena, California. The new system replaced an outdated minicomputer system which had been in use since 1980. This new data acquisition system was designed and built by JPL for the specific task of acquiring thermal test data in support of space simulation and thermal vacuum testing at JPL. The data acquisition system was designed using powerful personal computers and local-area-network (LAN) technology. Reliability, expandability, and maintainability were some of the most important criteria in the design of the data system and in the selection of hardware and software components. The data acquisition system is used to record both test chamber operational data and thermal data from the unit under test. Tests are conducted in numerous small thermal vacuum chambers and in the large solar simulator and range in size from individual components using only 2 or 3 thermocouples to entire planetary spacecraft requiring in excess of 1200 channels of test data. The system supports several of these tests running concurrently. The previous data system is described along with reasons for its replacement, the types of data acquired, the new data system, and the benefits obtained from the new system including information on tests performed to date.

  5. ERS-1 SAR data processing

    NASA Technical Reports Server (NTRS)

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

    1986-01-01

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

  6. High Frequency Sampling of TTL Pulses on a Raspberry Pi for Diffuse Correlation Spectroscopy Applications.

    PubMed

    Tivnan, Matthew; Gurjar, Rajan; Wolf, David E; Vishwanath, Karthik

    2015-01-01

    Diffuse Correlation Spectroscopy (DCS) is a well-established optical technique that has been used for non-invasive measurement of blood flow in tissues. Instrumentation for DCS includes a correlation device that computes the temporal intensity autocorrelation of a coherent laser source after it has undergone diffuse scattering through a turbid medium. Typically, the signal acquisition and its autocorrelation are performed by a correlation board. These boards have dedicated hardware to acquire and compute intensity autocorrelations of rapidly varying input signal and usually are quite expensive. Here we show that a Raspberry Pi minicomputer can acquire and store a rapidly varying time-signal with high fidelity. We show that this signal collected by a Raspberry Pi device can be processed numerically to yield intensity autocorrelations well suited for DCS applications. DCS measurements made using the Raspberry Pi device were compared to those acquired using a commercial hardware autocorrelation board to investigate the stability, performance, and accuracy of the data acquired in controlled experiments. This paper represents a first step toward lowering the instrumentation cost of a DCS system and may offer the potential to make DCS become more widely used in biomedical applications. PMID:26274961

  7. High Frequency Sampling of TTL Pulses on a Raspberry Pi for Diffuse Correlation Spectroscopy Applications

    PubMed Central

    Tivnan, Matthew; Gurjar, Rajan; Wolf, David E.; Vishwanath, Karthik

    2015-01-01

    Diffuse Correlation Spectroscopy (DCS) is a well-established optical technique that has been used for non-invasive measurement of blood flow in tissues. Instrumentation for DCS includes a correlation device that computes the temporal intensity autocorrelation of a coherent laser source after it has undergone diffuse scattering through a turbid medium. Typically, the signal acquisition and its autocorrelation are performed by a correlation board. These boards have dedicated hardware to acquire and compute intensity autocorrelations of rapidly varying input signal and usually are quite expensive. Here we show that a Raspberry Pi minicomputer can acquire and store a rapidly varying time-signal with high fidelity. We show that this signal collected by a Raspberry Pi device can be processed numerically to yield intensity autocorrelations well suited for DCS applications. DCS measurements made using the Raspberry Pi device were compared to those acquired using a commercial hardware autocorrelation board to investigate the stability, performance, and accuracy of the data acquired in controlled experiments. This paper represents a first step toward lowering the instrumentation cost of a DCS system and may offer the potential to make DCS become more widely used in biomedical applications. PMID:26274961

  8. Rapid, rigorous computation of modulation transfer function on a pocket calculator.

    PubMed

    Ronai tpm; kirch, D L

    1977-06-01

    This article describes a method for the rigorous calculation of modulation transfer function (MTF) of a collimated scintillation detector using a programmable pocket calculator. The calculation utilizes a normalized discrete Fourier transform (DFT) of the line spread function (LSF) including real and imaginary terms. A method is described for recording the LSF using an Anger camera and multichannel analyzer (MCA). The procedures for recording of the LSF and calculation of the MTF are therefore performed independently of a computer, allowing nuclear medicine laboratories without access to a computer, allowing nuclear medicine laboratories without access to incorporate MTF studies into their quality-assurance programs. The results obtained using the pocket calculator were compared with those using a PDP-12 minicomputer. The pocket calculator was slightly more accurate, since it does not suffer from the round-off errors of the PDP-12. The time required to plot an 11-point MTF curve using the pocket calculator was 5 min, using the PDP-12 0.5 min. PMID:870645

  9. SISCOPE: a multiuser information system for gastrointestinal endoscopy.

    PubMed

    Gouveia-Oliveira, A; Raposo, V D; Azevedo, A P; Salgado, N C; Almeida, I; Silva, A M; de Melo, F G; Correia, J P

    1991-09-01

    SISCOPE is an integrated data management system for use in gastrointestinal endoscopy units which operates in the multiuser mode on UNIX minicomputers or MS-DOS personal computers and can be used for patient bookings, endoscopic data entry and retrieval, and automatic report generation in upper gastrointestinal endoscopy, proctologic examinations, colonoscopy and peritoneoscopy. The description of endoscopic findings is remarkably detailed and data entry very rapid due to an advanced design of input screens that incorporates several recent concepts, including windows, menu bars and pull-down menus; typing is eliminated as data is entered with a mouse by pointing at options within menus. Endoscopic findings can be described under eight headings: morphology, topography, qualifiers, modifiers, signs of bleeding, endoscopic diagnosis, pathological diagnosis and etiology. Terminology is based strictly 3on the OMED system. SISCOPE also allows recording of details on endoscopic procedures, indications for the examination, preparation, premedication, complications and late entry of pathology reports. After entering all data, a report in natural language is produced automatically, the entire process taking one minute on average. Data retrieval programs give on-line access to previous examinations of a given patient and automatically generate activity reports. A formal language allows direct queries to the database and transfer of data for statistical analysis or other data processing. The system is simple to learn and use because operation is intuitive and all endoscopic techniques share the same basic menu structure and screen design. PMID:1743128

  10. Rectification of terrain induced distortions in radar imagery

    NASA Technical Reports Server (NTRS)

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

    1987-01-01

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

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

    NASA Technical Reports Server (NTRS)

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

    1988-01-01

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

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

    PubMed

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

    1992-04-01

    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

  13. Pressure Measurement Systems

    NASA Technical Reports Server (NTRS)

    1990-01-01

    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.

  14. Corrosion simulator passes field tests

    SciTech Connect

    Not Available

    1983-07-01

    Approximately 50 units of Nalco Chemical Co.'s Quantum-C corrosion simulator, a water-cooled, single-tube heat exchanger, were installed for field testing at various refineries over the past 2 1/2 years. Nalco says the simulator duplicates the corrosive environment inside an operating crude unit overhead system. Connected in parallel with a crude unit's overhead heat exchanger, the Quantum-C receives a portion of the process stream, establishing a temperature profile similar to that of the exchanger being monitored. Specimens of condensed fluids at selected temperatures can be obtained from sample ports along the simulator's tube for analysis of acidity or other corrosion indicators. Thus positioned, the simulator senses changes in corrosiveness, which in turn are reported to a minicomputer located in the process unit control room. Data, transmitted via a Rohrback 4100 interface, can then be displayed immediately or stored for later retrieval in any of several report formats. Nalco reports that the simulator identified and eliminated an aggressive but almost undetectable corrosion activity at one refinery. In another instance, the simulator reportedly verified that low pH conditions in a unit accumulator did not require additional neutralizer that would have cost the refiner an added $200/day.

  15. Integration of autonomous systems for remote control of data acquisition and diagnostics in the TJ-II device

    NASA Astrophysics Data System (ADS)

    Vega, J.; Mollinedo, A.; Lpez, A.; Pacios, L.; Dormido, S.

    1997-01-01

    The data acquisition system for TJ-II will consist of a central computer, containing the data base of the device, and a set of independent systems (personal computers, embedded ones, workstations, minicomputers, PLCs, and microprocessor systems among others), controlling data collection, and automated diagnostics. Each autonomous system can be used to isolate and manage specific problems in the most efficient manner. These problems are related to data acquisition, hard (?s-ms) real time requirements, soft (ms-s) real time requirements, remote control of diagnostics, etc. In the operation of TJ-II, the programming of systems will be carried out from the central computer. Coordination and synchronization will be performed by linking systems to local area networks. Several Ethernet segments and FDDI rings will be used for these purposes. Programmable logic controller devices (PLCs) used for diagnostic low level control will be linked among them through a fast serial link, the RS485 Profibus standard. One VME crate, running on the OS-9 real time operating system, will be assigned as a gateway, so as to connect the PLCs based systems with an Ethernet segment.

  16. Improving the MLS through enhanced cockpit displays

    NASA Technical Reports Server (NTRS)

    Jensen, R. S.

    1981-01-01

    A simulator investigation of various prediction and quickening algorithms in computer-generated forward-looking displays is presented; the algorithms are used to improve manual aircraft control on curved microwave landing system approaches. The experimental facility consisted of a Link GAT-2 simulator, a PDP 11/40 minicomputer, a high-speed graphic display, a TV camera, and a CRT monitor. Results indicate that second- and third-order predictor displays provide the best lateral performance and that intermediate levels of prediction and quickening provide the best vertical control. Prediction/quickening algorithms of increasing computational order were found to significantly reduce aileron, rudder, and elevator control responses. The conventional crosspointer displays yielded an average 2-sigma lateral error of + or - 200 over all wind conditions at 500 m from touchdown, and was therefore unable to meet FAA requirements (+ or - 22.9 m); the pictorial-preview display yielded much better results: an average 2-sigma lateral error of + or - 27 m. Neither display was able to approach the FAA specified accuracy requirement in the vertical dimension (+ or - 3.7 m).

  17. Fluctuations in tension during contraction of single muscle fibers.

    PubMed Central

    Borejdo, J; Morales, M F

    1977-01-01

    We have searched for fluctuations in the steady-state tension developed by stimulated single muscle fibers. Such tension "noise" is expected to be present as a result of the statistical fluctuations in the number and/or state of myosin cross-bridges interacting with thin filament sites at any time. A sensitive electro-optical tension transducer capable of resolving the expected fluctuations in magnitude and frequency was constructed to search for the fluctuations. The noise was analyzed by computing the power spectra and amplitude of stochastic fluctuations in the photomultiplier counting rate, which was made proportional to muscle force. The optical system and electronic instrumentation together with the minicomputer software are described. Tensions were measured in single skinned glycerinated rabbit psoas muscle fibers in rigor and during contraction and relaxation. The results indicate the presence of fluctuations in contracting muscles and a complete absence of tension noise in eith rigor or relaxation. Also, a numerical method was developed to simulate the power spectra and amplitude of fluctuations, given the rate constants for association and dissociation of the cross-bridges and actin. The simulated power spectra and the frequency distributions observed experimentally are similar. PMID:922123

  18. Remote sensing of tropospheric gases and aerosols with airborne DIAL system

    NASA Technical Reports Server (NTRS)

    Browell, E. V.

    1983-01-01

    The multipurpose airborne DIAL system developed at NASA Langley Research Center is characterized, and the published results of tropospheric O3, H2O, and aerosol-backscatter remote-sensing experiments performed in 1980 and 1981 are summarized. The system comprises two tunable dye lasers pumped by frequency-doubled Nd:YAG lasers, dielectric-coated steering optics, a 36-cm-diameter Cassegrain receiver telescope, gateable photomultiplier tubes, and a minicomputer data-processing unit for real-time calculation of gas concentrations and backscattering profiles. The transmitted energy of the 100-microsec-separated dye-laser pulses is 40, 80, or 50 mJ/pulse at around 300, 600, or 720-nm wavelength, respectively. Good agreement was found between DIAL-remote-sensed and in-situ H2O and O3 profiles of the lower troposphere and O3 profiles of the tropopause region, and the usefulness of DIAL backscattering measurements in the study of boundary-layer and tropospheric dynamics is demonstrated. The feasibility of DIAL sensing of power-plant or urban plume SO2, of urban-area (or rural-area column-content) NO2, and of temperature and H2O (simultaneously using a third laser) has been suggested by simulation studies.

  19. Integration and software for thermal test of heat rate sensors. [space shuttle external tank

    NASA Technical Reports Server (NTRS)

    Wojciechowski, C. J.; Shrider, K. R.

    1982-01-01

    A minicomputer controlled radiant test facility is described which was developed and calibrated in an effort to verify analytical thermal models of instrumentation islands installed aboard the space shuttle external tank to measure thermal flight parameters during ascent. Software was provided for the facility as well as for development tests on the SRB actuator tail stock. Additional testing was conducted with the test facility to determine the temperature and heat flux rate and loads required to effect a change of color in the ET tank external paint. This requirement resulted from the review of photographs taken of the ET at separation from the orbiter which showed that 75% of the external tank paint coating had not changed color from its original white color. The paint on the remaining 25% of the tank was either brown or black, indicating that it had degraded due to heating or that the spray on form insulation had receded in these areas. The operational capability of the facility as well as the various tests which were conducted and their results are discussed.

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

    USGS Publications Warehouse

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

    1981-01-01

    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.

  1. Interactive Forecasting with the National Weather Service River Forecast System

    NASA Technical Reports Server (NTRS)

    Smith, George F.; Page, Donna

    1993-01-01

    The National Weather Service River Forecast System (NWSRFS) consists of several major hydrometeorologic subcomponents to model the physics of the flow of water through the hydrologic cycle. The entire NWSRFS currently runs in both mainframe and minicomputer environments, using command oriented text input to control the system computations. As computationally powerful and graphically sophisticated scientific workstations became available, the National Weather Service (NWS) recognized that a graphically based, interactive environment would enhance the accuracy and timeliness of NWS river and flood forecasts. Consequently, the operational forecasting portion of the NWSRFS has been ported to run under a UNIX operating system, with X windows as the display environment on a system of networked scientific workstations. In addition, the NWSRFS Interactive Forecast Program was developed to provide a graphical user interface to allow the forecaster to control NWSRFS program flow and to make adjustments to forecasts as necessary. The potential market for water resources forecasting is immense and largely untapped. Any private company able to market the river forecasting technologies currently developed by the NWS Office of Hydrology could provide benefits to many information users and profit from providing these services.

  2. The impact of dental devices on neurostimulators.

    PubMed

    Roberts, Steven; Vender, John R; Causey, Mark S; Roberts, Jefferson R; Loushine, Robert J; Morris, Walter J; Looney, Stephen W

    2009-03-01

    Spinal cord stimulation has been a therapeutic option for chronic pain for over 40 years. The neurostimulator (NS) is a device consisting of three primary components: an electrode array configured either as a paddle or wire; an implantable pulse generator (IPG) consisting of a minicomputer, a transceiver/antenna, an electrical generator, and a battery; and insulated wiring connecting the electrode to the IPG. The electrode array can be implanted into the epidural space overlying the dorsal spinal cord or along a peripheral nerve. The device generates pulsed electrical signals that stimulate the underlying dorsal columns of the spinal cord resulting in the perception of paresthesia by the patient. When overlapped with painful areas, the paresthesia can help decrease the patient's level of pain. The increased applications and indications for this technology enhance the likelihood that the NS patient will be seen in the dental practice. Therefore, the purpose of this study was to investigate whether electromagnetic interference of the NS occurred during the operation of the apex locator, the electric pulp tester (EPT), or the electrocautery unit. An NS was implanted into the epidural space of a human cadaver. The dental devices were used intraorally, and the implant's circuitry was tested after each trial. Two apex locators, two EPTs, and one electrocautery unit were tested. Seventy trials were used by each dental device on each tissue. Using the exact binomial method of determining confidence intervals, the probability of damage to the NS by any of the devices was negligible. PMID:19249609

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

    PubMed

    O'Kane, K C; McColligan, E E

    1995-07-01

    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

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

    SciTech Connect

    Trammel, H.L.

    1990-10-20

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

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

    NASA Technical Reports Server (NTRS)

    Miyazono, C.

    1984-01-01

    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.

  6. Developing pharmacy applications using a microcomputer relational database in a long-term care psychiatric hospital.

    PubMed

    Salek, W

    1989-03-01

    The database applications developed with a microcomputer for a 1000 bed long-term care forensic psychiatric care hospital are described. The implementation of a microcomputer system was instituted as an interim measure prior to the development of a hospital wide minicomputer system. Primary emphasis was placed on increasing the efficiency of professional staff while enhancing clinical therapeutic monitoring. The system operates on an IBM-AT with 30 megabyte hard disk drive and an Epson FX-100 dot matrix printer. A relational database manager, Team-Up, was utilized in the development of applications that included census maintenance, scheduled drug inventory, drug regimen review, drug utilization protocols and a skilled nursing unit dose patient profile. Other ancillary functions included generation of stock labels, a literature abstract database and an on-line policy and procedure manual. Advantages of the system include an increase in staff productivity through the use of information that is readily attainable from the patient database. Possible disadvantages are the programming and hardware limitations imposed by a microcomputer system. Long term care psychiatric facilities may be able to enhance staff efficiency by computerizing existing manual systems. Because of the diverse and specialized requirements of long term care facilities, a microcomputer used in conjunction with a programmable relational database can be easily customized to fulfill this need. PMID:10292384

  7. 1985 ACSM-ASPRS Fall Convention, Indianapolis, IN, September 8-13, 1985, Technical Papers

    SciTech Connect

    Not Available

    1985-01-01

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

  8. The development of the reactor management system

    SciTech Connect

    Otsuka, T.; Kawamura, A.; Netsu, N.; Niki, K.; Sakamoto, Y.; Sekimizu, K.; Yanaoisawa, A.

    1982-11-01

    The Reactor Management System (RMS), an on-line system with a minicomputer, has been in operation at a boiling water reactor (BWR) nuclear power plant since 1977. The objectives of this system are to perform detailed monitoring and prediction of the core status and to make reactor operation more efficient, simpler, and easier. One of the features of the system is that the RMS utilizes process computer calculated data (such as power distribution and exposure distribution in the core) transferred through the data link, as well as the plant data (such as local power range monitor readings and control rod positions) transferred through the process input/output system. Based on operational experience at the BWR plant, calculation models have been improved to achieve higher accuracy, and new functions have been added to fulfill the operator's demands. The system has now become a useful tool for the operator. For instance, the power level prediction function has become essential for plant operation at the control rod pattern change.

  9. Augmented burst-error correction for UNICON laser memory. [digital memory

    NASA Technical Reports Server (NTRS)

    Lim, R. S.

    1974-01-01

    A single-burst-error correction system is described for data stored in the UNICON laser memory. In the proposed system, a long fire code with code length n greater than 16,768 bits was used as an outer code to augment an existing inner shorter fire code for burst error corrections. The inner fire code is a (80,64) code shortened from the (630,614) code, and it is used to correct a single-burst-error on a per-word basis with burst length b less than or equal to 6. The outer code, with b less than or equal to 12, would be used to correct a single-burst-error on a per-page basis, where a page consists of 512 32-bit words. In the proposed system, the encoding and error detection processes are implemented by hardware. A minicomputer, currently used as a UNICON memory management processor, is used on a time-demanding basis for error correction. Based upon existing error statistics, this combination of an inner code and an outer code would enable the UNICON system to obtain a very low error rate in spite of flaws affecting the recorded data.

  10. Real-time measurement of plutonium in air by direct-inlet surface ionization mass spectrometry. Status report

    SciTech Connect

    Stoffels, J.J.

    1980-04-01

    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.

  11. Determination of physical and chemical states of lubricants in concentrated contacts, part 1

    NASA Technical Reports Server (NTRS)

    Lauer, J. L.

    1979-01-01

    A Fourier emission infrared microspectrometer, set up on a vibration-proof optical table and interfaced to a dedicated minicomputer, was used to record infrared emission spectra from elastohydrodynamic bearing contacts. Its range was extended to cover the entire mid-infrared from 2 to 15 micron. A series of experiments with 5P4E polyphenyl ether showed the existence of a temperature gradient through the lubricant in an ehd contact, which is perpendicular to the flow direction. The experiments also show marked polarization of some of the spectral bands, indicating a molecular alignment. Alignment is less evident at high pressure than at low pressure. To account for this behavior, a model is suggested along the lines developed for the conformational changes observed in long-chain polymers when subjected to increased pressure--to accommodate closer packing, molecules become kinked and curl up. Experiments with a traction fluid showed periodic changes of flow pattern associated with certain spectral changes. These observations will be studied further. A study by infrared attenuated total reflection spectrophotometry was undertaken to determine whether gamma irradiation would change polyethylene wear specimens. The results were negative.

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

    NASA Astrophysics Data System (ADS)

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

    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.

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

    SciTech Connect

    1980-03-01

    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)

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

    PubMed Central

    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

    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. PMID:9357583

  15. Transferring ecosystem simulation codes to supercomputers

    NASA Technical Reports Server (NTRS)

    Skiles, J. W.; Schulbach, C. H.

    1995-01-01

    Many ecosystem simulation computer codes have been developed in the last twenty-five years. This development took place initially on main-frame computers, then mini-computers, and more recently, on micro-computers and workstations. Supercomputing platforms (both parallel and distributed systems) have been largely unused, however, because of the perceived difficulty in accessing and using the machines. Also, significant differences in the system architectures of sequential, scalar computers and parallel and/or vector supercomputers must be considered. We have transferred a grassland simulation model (developed on a VAX) to a Cray Y-MP/C90. We describe porting the model to the Cray and the changes we made to exploit the parallelism in the application and improve code execution. The Cray executed the model 30 times faster than the VAX and 10 times faster than a Unix workstation. We achieved an additional speedup of 30 percent by using the compiler's vectoring and 'in-line' capabilities. The code runs at only about 5 percent of the Cray's peak speed because it ineffectively uses the vector and parallel processing capabilities of the Cray. We expect that by restructuring the code, it could execute an additional six to ten times faster.

  16. Interactive data line study and experiment

    NASA Technical Reports Server (NTRS)

    Rasmussen, D. N.

    1978-01-01

    The paper considers the utility of having remote terminals on a Landsat image processing system and the development of efficient data transfer strategies such as data compression. The approach is to link an image processing terminal (located in a mobile van) to a multiuser host computer via the Communications Technology Satellite and a leased phone line. The host computer will share time between the remote state users and local users. The terminal includes a minicomputer, a color video display, and a communications interface, and the user has access to all of the resources of the host facility via the data link. While at present the terminal acts in the display-only mode, the computing capability of the terminal can be varied from display-only up to a stand-alone image processing system. An analysis of trade-offs between data link and remote terminal capacities is described with attention to the evaluation of the system by state users and the selection of a system architecture suitable to unique needs.

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

    SciTech Connect

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

    2003-10-01

    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.

  18. Kinesthetic coupling between operator and remote manipulator

    NASA Technical Reports Server (NTRS)

    Bejczy, A. K.; Salisbury, J. K., Jr.

    1980-01-01

    A universal force-reflecting hand controller has been developed which allows the establishment of a kinesthetic coupling between the operator and a remote manipulator. The six-degree-of-freedom controller was designed to generate forces and torques on its three positional and three rotational axes in order to permit the operator to accurately feel the forces encountered by the manipulator and be as transparent to operate as possible. The universal controller has been used in an application involving a six-degree-of-freedom mechanical arm equipped with a six-dimensional force-torque sensor at its base. In this application, the hand controller acts as a position control input device to the arm, while forces and torques sensed at the base of the mechanical hand back drive the hand controller. The positional control relation and the back driving of the controller according to inputs experienced by the force-torque sensor are established through complex mathematical transformations performed by a minicomputer. The hand controller is intended as a development tool for investigating force-reflecting master-slave manipulator control technology.

  19. Computer-assisted instruction in surgery.

    PubMed

    Halverson, J D; Ballinger, W F

    1978-06-01

    Computer-assisted instruction (CAI) is an educational medium which provides a highly interactive, adaptive, and individualized learning experience for the student or physician. A CAI system has benn developed to prepare a curriculum in general surgery. The surgical seminars written on this system have been used enthusiastically by students, residents, and interns for the past 18 months. Using a computer terminal (printer or television screen) connected by telephone to a minicomputer, the user participates in simulated seminars with the authors, viewing information and answering questions based on the material presented. The student responds by typing the answer in his own words, and the computer (author) responds with further information designed specifically for that answer. This response may support or contest what the student said, may branch the student to material covered previously, or instead may lead the student through as much remedial material as he needs. A more sophisticated student will progress rapidly through the seminar. Twenty-five surgeon/authors (at 15 medical schools) are preparing seminars, and it is planned that a complete library in general surgery will be available to departments of surgery nationally by September, 1978, via the Health Education Network. PMID:347616

  20. ANL statement of site strategy for computing workstations

    SciTech Connect

    Fenske, K.R.; Boxberger, L.M.; Amiot, L.W.; Bretscher, M.E.; Engert, D.E.; Moszur, F.M.; Mueller, C.J.; O'Brien, D.E.; Schlesselman, C.G.; Troyer, L.J.

    1991-11-01

    This Statement of Site Strategy describes the procedure at Argonne National Laboratory for defining, acquiring, using, and evaluating scientific and office workstations and related equipment and software in accord with DOE Order 1360.1A (5-30-85), and Laboratory policy. It is Laboratory policy to promote the installation and use of computing workstations to improve productivity and communications for both programmatic and support personnel, to ensure that computing workstations acquisitions meet the expressed need in a cost-effective manner, and to ensure that acquisitions of computing workstations are in accord with Laboratory and DOE policies. The overall computing site strategy at ANL is to develop a hierarchy of integrated computing system resources to address the current and future computing needs of the laboratory. The major system components of this hierarchical strategy are: Supercomputers, Parallel computers, Centralized general purpose computers, Distributed multipurpose minicomputers, and Computing workstations and office automation support systems. Computing workstations include personal computers, scientific and engineering workstations, computer terminals, microcomputers, word processing and office automation electronic workstations, and associated software and peripheral devices costing less than $25,000 per item.

  1. Deep electromagnetic sounding in central Nevada

    SciTech Connect

    Wilt, M.; Goldstein, N.E.; Haught, J.R.; Morrison, H.F.

    1982-04-01

    Sixteen shallow and deep controlled source electromagnetic soundings were performed in Buena Vista Valley, near Winnemucca, Nevada, to investigate an intra-basement conductor previously detected with magnetotellurics. The survey was carried out with the LBL EM-60 system using a remote magnetic reference for low-frequency geomagnetic noise cancellation, 100-m- and 2.8-km-diameter transmitter loops, and a minicomputer for in-field processing. EM soundings were made at distances from 0.5 to 30 km from three loops over the frequency range 0.02 to 500 Hz. Data were interpreted by means of 1-D inversions and the resulting layered models were pieced together to yield an approximate 2-D geoelectric model along the N-S axis of the valley. The EM soundings and one MT sounding show a 3 to 7 ohm-m zone at a depth of four to seven km. The conductor appears to be deepest at the northern end of the valley and shallowest beneath a basement ridge that seems to divide Buena Vista Valley into two basinal structures. Similar intra-basement conductors are also reported 50 to 75 miles south in the Carson Sink-Fallon areas, suggesting a common source, probably related to an anomalously hot, thin crust.

  2. Use of analytical mechanics in defining acoustic-test methodology

    SciTech Connect

    Emergy, A.F.; Thomas, G.H.

    1982-06-01

    One of the more pressing needs is the ability to measure the level of stress in materials due either to active loading or to the residual strains caused by plastic deformation. Acoustic techniques have not been exploited on a routine testing basis for stress determination because their use requires not only very sophisticated instrumentation, but also because they are difficult to automate and require laborious and delicate personal operation. However, the development of small, inexpensive micro- and mini-computers which can be dedicated to single tasks offers the possibiity of designing acoustic nondestructive evaluation (ANDE) procedures which will be accurate, reasonably priced and for which the computer may provide automated testing and data processing. A number of different ANDE measurements can be made, but the problem is to define their sensitivity and accuracy in order to choose one or more which are useful in a production sense. This paper describes several of these acoustic methods and the type of results which are to be expected when testing a tensile specimen with single or double edge cracks. The conclusion of this study should be applicable to acoustic NDE tests conducted to determine stress distributions in other specimen shapes.

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

    SciTech Connect

    Not Available

    1980-04-16

    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.

  4. A geographic information system for resource managers based on multi-level remote sensing data

    NASA Technical Reports Server (NTRS)

    Wheeler, D. J.; Ridd, M. K.

    1984-01-01

    Procedures followed in developing a test case geographic information system derived primarily from remotely sensed data for the North Cache Soil Conservation District (SCD) in northern Utah are outlined. The North Cache SCD faces serious problems regarding water allocation, flood and geologic hazards, urban encroachment into prime farmland, soil erosion, and wildlife habitat. Four fundamental data planes were initially entered into the geo-referenced data base: (1) land use/land cover information for the agricultural and built-up areas of the valley obtained from various forms of aerial photography; (2) vegetation/land cover in mountains classified digitally from LANDSAT; (3) geomorphic terrain units derived from aerial photography and soil maps; and (4) digital terrain maps obtained from DMA digital data. The land use/vegetation/land cover information from manual photographic and LANDSAT interpretation were joined digitally into a single data plane with an integrated legend, and segmented into quadrangle units. These were merged with the digitized geomorphic units and the digital terrain data using a Prime 400 minicomputer. All data planes were geo-referenced to a UTM coordinate grid.

  5. A geographic information system for resource managers based on multi-level remote sensing data

    NASA Technical Reports Server (NTRS)

    Wheeler, D. J.; Ridd, M. K.

    1985-01-01

    Procedures followed in developing a test case geographic information system derived primarily from remotely sensed data for the North Cache Soil Conservation District (SCD) in northern Utah are outlined. The North Cache SCD faces serious problems regarding water allocation, flood and geologic hazards, urban encroachment into prime farmland, soil erosion, and wildlife habitat. Four fundamental data planes were initially entered into the geo-referenced data base: (1) land use/land cover information for the agricultural and built-up areas of the valley obtained from various forms of aerial photography; (2) vegetation/land cover in mountains classified digitally from Landsat; (3) geomorphic terrain units derived from aerial photography and soil maps; and (4) digital terrain maps obtained from DMA digital data. The land use/vegetation/land cover information from manual photographic and Landsat interpretation were joined digitally into a single data plane with an integrated legend, and segmented into quadrangle units. These were merged with the digitized geomorphic units and the digital terrain data using a Prime 400 minicomputer. All data planes were geo-referenced to a UTM coordinate grid.

  6. Commercial space development needs cheap launchers

    NASA Astrophysics Data System (ADS)

    Benson, James William

    1998-01-01

    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.

  7. Adaptation of the Reitboeck method of multiple microelectrode recording to the neocortex of the waking monkey.

    PubMed

    Mountcastle, V B; Reitboeck, H J; Poggio, G F; Steinmetz, M A

    1991-01-01

    We adapted to the neocortex of waking monkeys a method for multiple microelectrode recording devised by Reitboeck. A sliding platform allows micropositioning of 7 electrodes independently, in 2 microns steps. Microelectrodes are quartz glass filaments (80 microns o.d.) with central metal cores (30 microns) of tungsten-platinum alloy. Filaments are drawn in a high temperature chamber, and ground to the desired form and tip size. The microdrive is held over the region to be explored, and the microelectrodes passed through 300 microns o.d. guide tubes fixed in implant thimbles of chosen size an and x - y arrangement of tubes, sealed by an O-ring into a small craniotomy opening. A microprocessor controlled recording system provides gain, noise and wave-shape filtering, impedance testing, and differential amplitude discrimination for each channel. Electrode movement is obtained via the microprocessor which displays and updates on the console terminal the electrode depth, impedance, and the channel assignment of each electrode. A second microprocessor based system is used to collect, buffer, and encode in real time all event data, which are transferred whenever convenient to a minicomputer that controls the experiment. Exploratory recordings were made in the posterior parietal, somatic sensory, and motor cortical areas. The system has now been used successfully in a number of investigations. PMID:2062112

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

    SciTech Connect

    Williams, R.E.

    1981-07-01

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

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

    NASA Technical Reports Server (NTRS)

    Carlson, T. N. (principal investigator)

    1982-01-01

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

  10. Applications manual for analyzing landfill methane-recovery data using the Computer Analysis of Field Data (CAFD) interactive graphics system

    SciTech Connect

    Not Available

    1982-07-01

    Computer Analysis of Field Data (CAFD) is an interactive computer software system that was developed to analyze and display data obtained during field monitoring studies associated with recovery of methane from landfills. The software is written in Basic for use on a Tektronix 4054 dynamic graphics minicomputer and display terminal. Required peripherals include a single floopy disk drive, a digitizing tablet, a hard-copy unit, and an x-y plotter. The analysis portion of the software compares and statistically correlates data sets and performs interpolation and filtering of data as a function of time. The display portion of the software presents data at particular sampling points as a function of time and presents contour and olbique plots of data at sampling points located in a two-dimensional grid pattern. The applications manual contains four separate but interrelated sections: an engineer's application guide, an overview of the CAFD interactive graphics system, and operator's manual, and instructions for creating data files and site maps.

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

    SciTech Connect

    Whittaker, A.

    1988-08-01

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

  12. Updated overview of the Tevatron control system

    SciTech Connect

    Lucas, P.

    1987-10-01

    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.

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

    PubMed

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

    1983-10-01

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

  14. [Medical data in pathology--evaluation of a large collection. (530,000 diagnoses coded in SNOMED II)].

    PubMed

    Baumann, R P

    1999-10-01

    The paper is describing the design and the performance of the computerized system, from its introduction in 1982 until the present day. The first device, using the MUMPS language on a mini-computer, followed by a VAX computer with terminals have been replaced in 1996 by an application program, using ORACLE, based on the client-server concept. The content and the particularities of the different data groups are discussed, concerning the functional components of the data bank: 'PATIENTS', 'SPECIMEN', 'SENDERS', 'REPORT' and 'DIAGNOSES'. By means of examples, we demonstrate the chronological evolution of the registration of persons, the distribution of the diagnoses according to the organ systems, the possibilities to combine various lesions and an algorithm to assure that a given lesion is registered only once per patient. In first place, the efficiency and the reliability of manual coding by a pathologist using the Systematized Nomenclature of Medicine (SNOMED; 2nd edition [1979/1982]) is discussed. The data bank currently contains 530,000 diagnoses, distributed among on SNOMED's five main modules, obtained from 1500 autopsies, 140,000 surgical and 180,000 cytological specimens. Concluding the article, an analysis is made of desirable developments in the future with the aim of a better integration of the acquired information in routine work and an enhanced use of the medical content for epidemiological research or statistical analysis. PMID:10582493

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

    USGS Publications Warehouse

    Murdock, James N.; Halbert, Scott E.

    1991-01-01

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

  16. High strain rate properties of unidirectional composites, part 1

    NASA Technical Reports Server (NTRS)

    Daniel, I. M.

    1991-01-01

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

  17. Confocal Laser Microscope Scanning Applied To Three-Dimensional Studies Of Biological Specimens.

    NASA Astrophysics Data System (ADS)

    Franksson, Olof; Liljeborg, Anders; Carlsson, Kjell; Forsgren, Per-Ola

    1987-08-01

    The depth-discriminating property of confocal laser microscope scanners can be used to record the three-dimensional structure of specimens. A number of thin sections (approx. 1 μm thick) can be recorded by a repeated process of image scanning and refocusing of the microscope. We have used a confocal microscope scanner in a number of feasibility studies to investigate its possibilities and limitations. It has proved to be well suited for examining fluorescent specimens with a complicated three-dimensional structure, such as nerve cells. It has also been used to study orchid seeds, as well as cell colonies, greatly facilitating evaluation of such specimens. Scanning of the specimens is performed by a focused laser beam that is deflected by rotating mirrors, and the reflected or fluorescent light from the specimen is detected. The specimen thus remains stationary during image scanning, and is only moved stepwise in the vertical direction for refocusing between successive sections. The scanned images consist of 256*256 or 512*512 pixels, each pixel containing 8 bits of data. After a scanning session a large number of digital images, representing consecutive sections of the specimen, are stored on a disk memory. In a typical case 200 such 256*256 images are stored. To display and process this information in a meaningful way requires both appropriate software and a powerful computer. The computer used is a 32-bits minicomputer equipped with an array processor (FPS 100). The necessary software was developed at our department.

  18. An interferometric strain-displacement measurement system

    NASA Technical Reports Server (NTRS)

    Sharpe, William N., Jr.

    1989-01-01

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

  19. Simulation and analyses of the aeroassist flight experiment attitude update method

    NASA Technical Reports Server (NTRS)

    Carpenter, J. R.

    1991-01-01

    A method which will be used to update the alignment of the Aeroassist Flight Experiment's Inertial Measuring Unit is simulated and analyzed. This method, the Star Line Maneuver, uses measurements from the Space Shuttle Orbiter star trackers along with an extended Kalman filter to estimate a correction to the attitude quaternion maintained by an Inertial Measuring Unit in the Orbiter's payload bay. This quaternion is corrupted by on-orbit bending of the Orbiter payload bay with respect to the Orbiter navigation base, which is incorporated into the payload quaternion when it is initialized via a direct transfer of the Orbiter attitude state. The method of updating this quaternion is examined through verification of baseline cases and Monte Carlo analysis using a simplified simulation, The simulation uses nominal state dynamics and measurement models from the Kalman filter as its real world models, and is programmed on Microvax minicomputer using Matlab, and interactive matrix analysis tool. Results are presented which confirm and augment previous performance studies, thereby enhancing confidence in the Star Line Maneuver design methodology.

  20. Study of a hybrid multispectral processor

    NASA Technical Reports Server (NTRS)

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

    1973-01-01

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

  1. [Measurement of the latencies of voluntary and corrective ocular saccades. Value in otoneurology].

    PubMed

    Vitte, E; Ulmer, E; Chaumette, A; Frachet, B; Freyss, G; Pialoux, P

    1983-01-01

    The delay between the stimulus and the voluntary eye saccade is the only parameter of the saccadic system which can be measured by using standard apparatus. Taking manually the measurements made on records obtained by using minicomputer; the authors show that such manual measurement of latencies is easy and yet sufficiently accurate to be of great clinical value. The latencies of voluntary saccades are normal in peripheral pathology (less than 250 milliseconds). Latencies of voluntary saccades are significantly increased in extrinsic brain stem lesions: tumours (in particular ponto cerebellar tumours), meningitis, head injury; but the velocity of the saccade is normal. This effect goes in parallel with impairement of the smooth pursuit. In intrinsic brain stem lesions (multiple sclerosis, acute brain stem stroke, oculomotor paralysis) latencies are increased bilaterally and above all, there is a significant slowing of the saccade. The role of fatigue increased latencies in some patients of this series. Two populations can be discerned in vestibular neuritis: one normal and one with abnormal smooth pursuit and increased saccadic latencies. PMID:6847074

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

    SciTech Connect

    Hoover, D. S.; Davis, A.

    1980-10-01

    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.

  3. Definition study for photovoltaic residential prototype system

    NASA Technical Reports Server (NTRS)

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

    1976-01-01

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

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

    PubMed

    Macrae, S

    1981-08-01

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

  5. Text processing for technical reports (direct computer-assisted origination, editing, and output of text)

    SciTech Connect

    De Volpi, A.; Fenrick, M. R.; Stanford, G. S.; Fink, C. L.; Rhodes, E. A.

    1980-10-01

    Documentation often is a primary residual of research and development. Because of this important role and because of the large amount of time consumed in generating technical reports, particularly those containing formulas and graphics, an existing data-processing computer system has been adapted so as to provide text-processing of technical documents. Emphasis has been on accuracy, turnaround time, and time savings for staff and secretaries, for the types of reports normally produced in the reactor development program. The computer-assisted text-processing system, called TXT, has been implemented to benefit primarily the originator of technical reports. The system is of particular value to professional staff, such as scientists and engineers, who have responsibility for generating much correspondence or lengthy, complex reports or manuscripts - especially if prompt turnaround and high accuracy are required. It can produce text that contains special Greek or mathematical symbols. Written in FORTRAN and MACRO, the program TXT operates on a PDP-11 minicomputer under the RSX-11M multitask multiuser monitor. Peripheral hardware includes videoterminals, electrostatic printers, and magnetic disks. Either data- or word-processing tasks may be performed at the terminals. The repertoire of operations has been restricted so as to minimize user training and memory burden. Spectarial staff may be readily trained to make corrections from annotated copy. Some examples of camera-ready copy are provided.

  6. The graphics and data acquisition software package

    NASA Technical Reports Server (NTRS)

    Crosier, W. G.

    1981-01-01

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

  7. Review of the Water Resources Information System of Argentina

    USGS Publications Warehouse

    Hutchison, N.E.

    1987-01-01

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

  8. High performance/low cost accelerator control system

    SciTech Connect

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

    1980-10-01

    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.

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

    PubMed Central

    Koch, A L

    1975-01-01

    If bacteria are incapable of forming and incorporating proteins into the cytoplasmic membranes in all phases of the cell cycle, then not all cells from an asynchronous culture should be capable of growth when switched to a new carbon and energy source whose metabolism requires new membrane function. The transfer of an inducible culture to low lactose provides such a situation since the cells cannot grow unless galactoside permease can function to concentrate the lactose internally. From such experiments, it was concluded that the Y gene product of the lac operon is synthesized, incorporated, and can start functioning in active transport, at any time throughout the bulk of the cell cycle. Not only were the lags before growth re-ensued much shorter than would be expected if the membrane transport capability could only be developed in a small portion of the cycle, but brief pulses of a gratuitous inducer shortened the lags much further. Three types of Escherichia coli ML 30 culture were studied: cells that had exhausted the limiting glucose; cells taken directly from glucose-limited chemostats; and a washed suspension of highly catabolite repressed cells from cultures grown in high levels of glucose and gluconate. The growth studies reported here were performed on-line with a minicomputer. They represent at least an order of magnitude increase in accuracy in estimating growth parameters over previous instrumentation. PMID:1100610

  10. Managing for the next big thing. Interview by Paul Hemp.

    PubMed

    Ruettgers, M

    2001-01-01

    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

  11. The display of molecular models with the Ames Interactive Modeling System (AIMS)

    NASA Technical Reports Server (NTRS)

    Egan, J. T.; Hart, J.; Burt, S. K.; Macelroy, R. D.

    1982-01-01

    A visualization of molecular models can lead to a clearer understanding of the models. Sophisticated graphics devices supported by minicomputers make it possible for the chemist to interact with the display of a very large model, altering its structure. In addition to user interaction, the need arises also for other ways of displaying information. These include the production of viewgraphs, film presentation, as well as publication quality prints of various models. To satisfy these needs, the display capability of the Ames Interactive Modeling System (AIMS) has been enhanced to provide a wide range of graphics and plotting capabilities. Attention is given to an overview of the AIMS system, graphics hardware used by the AIMS display subsystem, a comparison of graphics hardware, the representation of molecular models, graphics software used by the AIMS display subsystem, the display of a model obtained from data stored in molecule data base, a graphics feature for obtaining single frame permanent copy displays, and a feature for producing multiple frame displays.

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

    USGS Publications Warehouse

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

    1987-01-01

    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)

  13. Distribution of computer functionality for accelerator control at the Brookhaven AGS

    SciTech Connect

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

    1985-01-01

    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.

  14. Distribution of computer functionality for accelerator control at the Brookhaven AGS

    SciTech Connect

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

    1985-10-01

    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.

  15. An objective algorithm for the determination of bone mineral content using dichromatic absorptiometry

    SciTech Connect

    Appledorn, C.R.; Witt, R.M.; Wellman, H.N.; Johnston, C.C.

    1985-05-01

    The determination of vertebral column bone mineral content by dual photon absorptiometric methods is a problem of continued clinical interest. The more successful methods suffer from the frequent need of operator interaction in order to maintain good precision results. The authors have introduced a new objective algorithm that eliminates the subjectiveness of operator interaction without sacrificing reproducibility. The authors' system consists of a modified rectilinear scanner interfaced to a CAMAC acquisition device coupled to a PDP-11V03 minicomputer. The subject is scanned in the supine position with legs elevated to minimize lordosis. The source (Gd-153) and detector are collimated defining an area of 10mm x 10mm at the level of the spine. The transverse scan width is usually 120 mm. Scanning from the iliac crests toward the head, 50 transverses at 3mm y-increments are acquired at approximately 1mm increments. The data analysis begins with the calculation of R-value for each pixel in the scan. The calculations for bone mineral content are performed and various quantities are accumulated. In a reproducibility study of 116 patient studies, the authors achieved a bone mineral/bone area ratio precision (std dev/mean) of 1.37% without operator interaction nor vertebral body selection.

  16. Deep electromagnetic sounding in central Nevada

    NASA Astrophysics Data System (ADS)

    Wilt, M.; Goldstein, N. E.; Haught, J. R.; Morrison, H. F.

    1982-04-01

    Sixteen shallow and deep controlled source electromagnetic soundings were performed in Buena Vista Valley, near Winnemucca, Nevada, to investigate an intra-basement conductor previously detected with magnetotellurics. The survey was carried out with the LBL EM-60 system using a remote magnetic reference for low-frequency geomagnetic noise cancellation, 100-m and 2.8-km-diameter transmitter loops, and a minicomputer for in-field processing. EM soundings were made at distance from 0.5 to 30 km from three loops over the frequency range 0.02 to 500 Hz. Data were interpreted by means of 1-D inversions and the resulting layered models were pieced together to yield an approximate 2-D geoelectric model along the N-S axis of the valley. The EM soundings and one MT sounding show a 3 to 7 ohm-m zone at a depth of four to seven km. The conductor appears to be deepest at the northern end.

  17. Multiple-site perineal applicator (MUPIT) for treatment of prostatic, anorectal, and gynecologic malignancies

    SciTech Connect

    Martinez, A.; Cox, R.S.; Edmundson, G.K.

    1984-02-01

    Recently, transperineal interstitial-intracavitary applicators have been used to treat locally limited and advanced perineal and gynecologic malignancies. The authors have developed a single afterloading applicator, referred to as the ''MUPIT'' (Martinez Universal Perineal Interstitial Template), which with its prototypes has been utilized to treat 78 patients with malignancies of the cervix, vagina, female urethra, perineum, prostate, and anorectal region. The device basically consists of two acrylic cylinders, an acrylic template with a predrilled array of holes that serve as guides for trocars, and a cover plate. Some of the guide holes on the template are angled outward to permit a wide lateral coverage without danger of striking the ischium. The cylinders have an axial hole large enough to pass a central tandem or a suction tube for the drainage of secretions. Thus, the device allows for the interstitial placement of /sup 192/Ir ribbons as well as the intracavitary placement of either /sup 137/Cs tubes or /sup 192/Ir ribbons. In use, the cylinders are placed in the vagina and rectum and then fastened to the template, so that a fixed geometric relationship among the tumor volume, normal structures, and source placement is preserved throughout the course of the implantation. Appropriate computer programs also have been developed on a minicomputer for the corresponding dose-rate computations.

  18. HEO multimission navigation concept

    NASA Technical Reports Server (NTRS)

    Ellis, J.

    1986-01-01

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

  19. A system for processing Landsat and other georeferenced data for resource management applications

    NASA Technical Reports Server (NTRS)

    Whitley, S. L.

    1979-01-01

    The NASA Earth Resources Laboratory has developed a transferrable system for processing Landsat and disparate data with capabilities for digital data classification, georeferencing, overlaying, and data base management. This system is known as the Earth Resources Data Analysis System. The versatility of the system has been demonstrated with applications in several disciplines. A description is given of a low-cost data system concept that is suitable for transfer to one's available in-house minicomputer or to a low-cost computer purchased for this purpose. Software packages are described that process Landsat data to produce surface cover classifications and that geographically reference the data to the UTM projection. Programs are also described that incorporate several sets of Landsat derived information, topographic information, soils information, rainfall information, etc., into a data base. Selected application algorithms are discussed and sample products are presented. The types of computers on which the low-cost data system concept has been implemented are identified, typical implementation costs are given, and the source where the software may be obtained is identified.

  20. 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

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

    1989-06-01

    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.