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in subjects: "On-Line Systems"

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Simulating the operation of a port contender with SIM 4: applying Monte Carlo techniques to the Gandalf PACX IV

A simulation program, SIM 4, has been written which utilizes usage statistics to project PACK IV performance. Using this program, system managers can allocate scarce resources in an efficient manner.

Date: March 1, 1982

Creator: Totendino, L.F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Computer-aided visualization of database structural relationships

Interactive computer graphic displays can be extremely useful in augmenting understandability of data structures. In complexly interrelated domains such as bibliographic thesauri and energy information systems, node and link displays represent one such tool. This paper presents examples of data structure representations found useful in these domains and discusses some of their generalizable components. 2 figures.

Date: April 1, 1980

Creator: Cahn, D.F.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Thin polymer icemaker development and test program

We have constructed and tested a small device to produce ice in ice/water mixtures using a cold fluid as the heat sink. The device is a flexible heat exchanger constructed from a thin film of a suitable polymer. When filled with circulating liquid coolant the heat exchanger consists of an inflated series of parallel tubes; ice forms on the outside in complementary half cylinders. When the circulation is cut off, gravity drains the coolant and the static head of the water bath crushes the tubes,… more

Date: August 1, 1991

Creator: Leigh, R.W. (Pratt Inst., Brooklyn, NY (United States))

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Neutron induced gamma spectrometry for on-line compositional analysis in coal conversion and fluidized-bed combustion plants

Nuclear techniques involving relatively penetrating radiation may offer the possibility of non-invasive, continuous on-line instrumental monitoring which is representative of the full process stream. Prompt gamma rays following neutron capture are particularly attractive because the penetrating power of the neutrons and the, typically several MeV, capture gammas makes possible interrogation of material within a pipe. We are evaluating neutron capture gamma techniques for this application, both … more

Date: January 1, 1977

Creator: Herzenberg, C. L.; O'Fallon, N. M.; Yarlagadda, B. S.; Doering, R. W.; Cohn, C. E.; Porges, K. G. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Background information on the SSC project

This report discusses the following information about the Superconducting Super Collider: Goals and milestones; civil construction; ring components; cryogenics; vacuum and cooling water systems; electrical power; instrumentation and control systems; and installation planning.

Date: October 1, 1991

Creator: Warren, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

On-line chemical composition analyzer development

The energy consumed in distillation processes in the United States represents nearly three percent of the total national energy consumption. If effective control of distillation columns can be accomplished, it has been estimated that it would result in a reduction in the national energy consumption of 0.3%. Real-time control based on mixture composition could achieve these savings. However, the major distillation processes represent diverse applications and at present there does not exist a pro… more

Date: February 1, 1992

Creator: Roberts, M.J.; Garrison, A.A.; Muly, E.C. & Moore, C.F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

CDC 7600 LTSS programming stratagens: preparing your first production code for the Livermore Timesharing System

This report deals with some techniques in applied programming using the Livermore Timesharing System (LTSS) on the CDC 7600 computers at the National Magnetic Fusion Energy Computer Center (NMFECC) and the Lawrence Livermore Laboratory Computer Center (LLLCC or Octopus network). This report is based on a document originally written specifically about the system as it is implemented at NMFECC but has been revised to accommodate differences between LLLCC and NMFECC implementations. Topics include… more

Date: August 15, 1977

Creator: Fong, K. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

On-line uranium determination using remote fiber fluorimetry

Remote Fiber Fluorimetry (RFF) is being developed at Savannah River Laboratory for the on-line determination of uranium in plant process streams. A prototype system suitable for plant use has been designed and is being built. RFF has four major components: a laser, an optical fiber, an optrode, and a detector. Essentially, an optical fiber carries laser radiation from a laser to a process sampling point. An optrode (the optical analog of an electrode) couples the laser light into a sample solut… more

Date: January 1, 1985

Creator: Malstrom, R A

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

PEP instrumentation and control system

This paper describes the operating characteristics of the primary components that form the PEP Instrumentation and Control System. Descriptions are provided for the computer control system, beam monitors, and other support systems.

Date: June 1, 1980

Creator: Melen, R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Introduction to human factors

Some background is given on the field of human factors. The nature of problems with current human/computer interfaces is discussed, some costs are identified, ideal attributes of graceful system interfaces are outlined, and some reasons are indicated why it's not easy to fix the problems. (LEW)

Date: March 1, 1988

Creator: Winters, J. M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

System for unattended surveillance of nuclear reactor behavior

A multivariate statistical pattern recognition system for reactor noise analysis is presented. The basis of the system is a transformation for decoupling correlated variables and algorithms for inferring probability density functions. The system is adaptable to a variety of statistical properties of the data, and it has learning, tracking, updating, and dimensionality reduction capabilities. System design emphasizes control of the false-alarm rate. Its abilities to learn normal patterns and to … more

Date: January 1, 1977

Creator: Gonzalez, R. C. & Howington, L. C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Overview of the DOE Waste Facilities Operations Robotics Technology Development Program

The Department of Energy's Office of Technology Development has initiated a Robotics Technology Development Program that includes technology aimed at DOE Waste Facilities Operations (WFO). Much of this technology may also be applicable to waste facilities outside of DOE and will be available for use. This is a team effort of several DOE Laboratories and Sites. The WFO team includes the Savannah River Technology Center, Sandia National Laboratories, Oak Ridge National Laboratory, Idaho National … more

Date: January 1, 1992

Creator: Ward, C. R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Consolidated fuel-reprocessing program. Progress report, April 1-June 30, 1982

Highlights of progress accomplished during the quarter ending June 30, 1982 are summarized. Discussion is presented under the headings: Process development; Laboratory R and D; Engineering research; Engineering systems; Integrated equipment test facility operation; Instrument development; and HTGR fuel reprocessing.

Date: September 1, 1982

Creator: Burch, W D

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Digital neutron radiography using plane converters with multiwire proportional chambers

The work described here was completed more than three years ago, and represents, in large part the PhD and MS thesis research of two of the present authors. Much of it has been reported previously elsewhere. It constitutes an effort to develop and study a moderately low cost, moderate resolution, high sensitivity, on-line method for digital neutron radiography, intended for use where neutron fluence was limited by source strength, or received dose. The basic imaging system consisted of a positi… more

Date: December 1, 1981

Creator: Kaplan, S. N.; Director, B. A.; Perez-Mendez, V. & Valentine, K. H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

A comparison of three self-tuning control algorithms developed for the Bristol-Babcock controller

A brief overview of adaptive control methods relating to the design of self-tuning proportional-integral-derivative (PID) controllers is given. The methods discussed include gain scheduling, self-tuning, auto-tuning, and model-reference adaptive control systems. Several process identification and parameter adjustment methods are discussed. Characteristics of the two most common types of self-tuning controllers implemented by industry (i.e., pattern recognition and process identification) are su… more

Date: April 1, 1992

Creator: Tapp, P.A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

EPICS System: RSX Implementation Issues

This paper presents implementation details of the Experimental Physics Interactive Control System (EPICS). EPICS is used to control accelerated particle beams for high-energy physics experiments at the Fermi National Accelerator Laboratory. The topics discussed are: interprocessor communication, support of beamline terminals and devices, resource management, mapping, various problems, some solutions to the problems, performance measurement, and modifications and extensions to RSX-11M. This pape… more

Date: February 1, 1984

Creator: Lahey, T. E.; Bartlett, J. F.; Bobbitt, J. S.; Kramper, B. J.; MacKinnon, B. A. & West, R. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

SRL online Analytical Development

The Savannah River Site is operated by the Westinghouse Savannah River Co. for the Department of Energy to produce special nuclear materials for defense. R D support for site programs is provided by the Savannah River Laboratory, which I represent. The site is known primarily for its nuclear reactors, but actually three fourths of the efforts at the site are devoted to fuel/target fabrication, fuel/target reprocessing, and waste management. All of these operations rely heavily on chemical proce… more

Date: January 1, 1991

Creator: Jenkins, C.W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Simultaneous analysis of uranium and nitrate

A direct spectrophotometric method has been developed for the determination of 20 to 200 g/l of uranium in the presence of 3 to 5 M nitric acid. A dual-wavelength analysis is used to eliminate the enhancing effect of nitrate ion on the uranium visible spectra. The precision and accuracy of the simultaneous analysis of uranium and nitrate were compared using combinations of the four uranium wavelength maxima, occurring at 426, 416, 403 and 359 nm. Calculations based on 426 and 416 nm data yielde… more

Date: April 1, 1978

Creator: Bostick, D.T.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

On-line composition with laser-based techniques

Current methods for determining the composition of coal gasification streams generally involve sampling, some treatment, and inherent delay times prior to analysis. Optical instrumentation, on the other hand, provides the potential for on-line, rapid-response monitoring of gasifier streams. Among the optical technques that appear quite promising for this application are coherent anti-Stokes Raman scattering (CARS), laser-induced breakdown spectroscopy (LIBS), Fourier transform infrared spectros… more

Date: January 1, 1982

Creator: Finch, F.T. & Hartford, A. Jr.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Laser diagnostics of materials and chemistry

Several examples are given of the ability of laser-based diagnostic techniques to make noninvasive measurements in hostile environments. Using coherent anti-Stokes Raman scattering both majority and minority species concentrations, as well as temperature, have been measured in the hot, high-pressure, particle-laden stream of a coal gasifier. In addition, numerous toxic and corrosive elements in the gasifier stream have been identified, but not yet quantified. In addition to providing the capabi… more

Date: January 1, 1984

Creator: Hartford, A. Jr.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Computer Facilities for Isabelle Data Handling

The analysis of data produced by Isabelle experiments will need a large system of computers. Included in the array should be a substantial computer system at each Isabelle intersection in use. These systems must include enough computer power to keep experimenters aware of the status of the experiment. This will require at least one very fast sophisticated processor in the system, the size depending on the experiment. Other features of the intersection systems must be a good, high speed graphic … more

Date: January 1, 1977

Creator: Kramer, M. A.; Love, W. A.; Miller, R. J. & Zeller, M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Advanced servomanipulator development

The Advanced Servomanipulator (ASM) System consists of three major components: the ASM slave, the dual arm master controller (DAMC) or master, and the control system. The ASM is remotely maintainable force-reflecting servomanipulator developed at the Oak Ridge National Laboratory (ORNL) as part of the Consolidated Fuel Reprocessing Program. This new manipulator addresses requirements of advanced nuclear fuel reprocessing with emphasis on force reflection, remote maintainability, reliability, ra… more

Date: January 1, 1985

Creator: Kuban, D.P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Spectrum-transformed sequential testing method for signal validation applications

The Sequential Probability Ratio Test (SPRT) has proven to be a valuable tool in a variety of reactor applications for signal validation and for sensor and equipment operability surveillance. One drawback of the conventional SPRT method is that its domain of application is limited to signals that are contaminated by gaussian white noise. Nongaussian process variables contaminated by serial correlation can produce higher-than-specified rates of false alarms and missed alarms for SPRT-based surve… more

Date: January 1, 1992

Creator: Gross, K.C. (Argonne National Lab., IL (United States)) & Hoyer, K.K. (Northwestern Univ., Evanston, IL (United States). Dept. of Industrial Engineering and Management Sciences)

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Audit trails and PC control on Novell networks

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

Date: January 1, 1991

Creator: Cabot, A.

Item Type: Article

Partner: UNT Libraries Government Documents Department