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in creator/contributor: "Dress, W. B."

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SOME PRELIMINARY CONSIDERATIONS TO THE NEUTRON ELECTRIC DIPOLE MOMENT EXPERIMENT AT ORNL INCLUDING A SUMMARY OF SYMMETRY PRINCIPLES FOR ELEMENTARY PARTICLES.

No Description Available.

Date: October 31, 1967

Creator: Dress, W.B.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Observation of two photons in n-p capture

No Description Available.

Date: January 1, 1972

Creator: Dress, W. B., Jr.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Study of KLL Auger processes for light elements above Z = 10. [Review]

A comprehensive review is given of the KLL Auger spectrum for members of the third row of the periodic table. This group contains the lightest elements wherein an Auger process can occur without the direct participation of the valence shell. Recent Auger spectra induced by x-ray photoionization on Mg, Al, and Si metals and their oxides are given as well as preliminary results on salts of Na and K, and for comparison, the LMM spectra of RbCl. Results were combined with previous experimental data… more

Date: January 1, 1977

Creator: Carlson, T. A.; Dress, W. B. & Nyberg, G. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Determination of the neutron magnetic moment

The neutron magnetic moment has been measured with an improvement of a factor of 100 over the previous best measurement. Using a magnetic resonance spectrometer of the separated oscillatory field type capable of determining a resonance signal for both neutrons and protons (in flowing H/sub 2/O), we find ..mu../sub n//..mu../sub p/ = 0.68497935(17) (0.25 ppM). The neutron magnetic moment can also be expressed without loss of accuracy in a variety of other units.

Date: January 1, 1981

Creator: Greene, G. L.; Ramsey, N. F.; Mampe, W.; Pendlebury, J. M.; Smith, K.; Dress, W. B. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

High resolution ultrasonic densitometer

The velocity of torsional stress pulses in an ultrasonic waveguide of non-circular cross section is affected by the temperature and density of the surrounding medium. Measurement of the transit times of acoustic echoes from the ends of a sensor section are interpreted as level, density, and temperature of the fluid environment surrounding that section. This paper examines methods of making these measurements to obtain high resolution, temperature-corrected absolute and relative density and leve… more

Date: January 1, 1983

Creator: Dress, W. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Torsional ultrasonic technique for reactor vessel liquid level measurement

We have undertaken a detailed study of an ultrasonic waveguide employed as a level, density, and temperature sensor. The purpose of this study was to show how such a device might be used in the nuclear power industry to provide reliable level information with a multifunction sensor, thus overcomming several of the errors that led to the accident at Three Mile Island. Some additional work is needed to answer the questions raised by the current study, most noticably the damping effects of flowing… more

Date: January 1, 1983

Creator: Dress, W. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Ultrasonic level and temperature sensor for power reactor applications

An ultrasonic waveguide employing torsional and extensional acoustic waves has been developed for use as a level and temperature sensor in pressurized and boiling water nuclear power reactors. Features of the device include continuous measurement of level, density, and temperature producing a real-time profile of these parameters along a chosen path through the reactor vessel.

Date: January 1, 1983

Creator: Dress, W.B.: Miller, G.N.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

On modeling and controlling intelligent systems

The aim of this paper is to show how certain diverse and advanced techniques of information processing and system theory might be integrated into a model of an intelligent, complex entity capable of materially enhancing an advanced information management system. To this end, we first examine the notion of intelligence and ask whether a semblance thereof can arise in a system consisting of ensembles of finite-state automata. Our goal is to find a functional model of intelligence in an informatio… more

Date: November 1, 1993

Creator: Dress, W. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Cellular automata modeling of weld solidification structure

The authors explore the use of cellular automata in modeling arc-welding processes. A brief discussion of cellular automata and their previous use in micro-scale solidification simulations is presented. Macro-scale thermal calculations for arc-welding at a thin plate are shown to give good quantitative and qualitative results. Combining the two calculations in a single cellular array provides a realistic simulation of grain growth in a welding process. Results of simulating solidification in a … more

Date: December 31, 1993

Creator: Dress, W. B.; Zacharia, T. & Radhakrishnan, B.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Wavelet-based acoustic recognition of aircraft

We describe a wavelet-based technique for identifying aircraft from acoustic emissions during take-off and landing. Tests show that the sensor can be a single, inexpensive hearing-aid microphone placed close to the ground the paper describes data collection, analysis by various technique, methods of event classification, and extraction of certain physical parameters from wavelet subspace projections. The primary goal of this paper is to show that wavelet analysis can be used as a divide-and-con… more

Date: September 1, 1994

Creator: Dress, W. B. & Kercel, S. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Feasibility of an anticipatory noncontact precrash restraint actuation system

The problem of providing an electronic warning of an impending crash to a precrash restraint system a fraction of a second before physical contact differs from more widely explored problems, such as providing several seconds of crash warning to a driver. One approach to precrash restraint sensing is to apply anticipatory system theory. This consists of nested simplified models of the system to be controlled and of the system`s environment. It requires sensory information to describe the ``curre… more

Date: 1995

Creator: Kercel, S. W. & Dress, W. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Event identification by acoustic signature recognition

Many events of interest to the security commnnity produce acoustic emissions that are, in principle, identifiable as to cause. Some obvious examples are gunshots, breaking glass, takeoffs and landings of small aircraft, vehicular engine noises, footsteps (high frequencies when on gravel, very low frequencies. when on soil), and voices (whispers to shouts). We are investigating wavelet-based methods to extract unique features of such events for classification and identification. We also discuss … more

Date: July 1, 1995

Creator: Dress, W. B. & Kercel, S. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Anticipatory precrash restraint sensor feasibility study: Final report

This report explores feasibility of an anticipatory precrash restraint sensor. The foundation principle is the anticipation mechanism found at a primitive level of biological intelligence and originally formalized by the mathematical biologist Robert Rosen. A system based on formal anticipatory principles should significantly outperform conventional technologies. It offers the prospect of high payoff in prevention of death and injury. Sensors and processes are available to provide a good, fast,… more

Date: August 1, 1995

Creator: Kercel, S. W. & Dress, W. B.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

A hardware implementation of multiresolution filtering for broadband instrumentation

The authors have constructed a wavelet processing board that implements a 14-level wavelet transform. The board uses a high-speed, analog-to-digital (A/D) converter, a hardware queue, and five fixed-point digital signal processing (DSP) chips in a parallel pipeline architecture. All five processors are independently programmable. The board is designed as a general purpose engine for instrumentation applications requiring near real-time wavelet processing or multiscale filtering. The present app… more

Date: December 1995

Creator: Kercel, S. W. & Dress, W. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Application of the smart portal in transportation

Under a program sponsored by the Department of Energy, the Oak Ridge complex is developed a ``Portal-of-the-Future``, or ``smart portal``. This is a security portal for vehicular traffic which is intended to quickly detect explosives, hidden passengers, etc. It uses several technologies, including microwaves, weigh-in-motion, digital image processing, and electroacoustic wavelet-based heartbeat detection. A novel component of particular interest is the Enclosed Space Detection System (ESDS), wh… more

Date: December 31, 1996

Creator: Kercel, S. W.; Baylor, V. M.; Dress, W. B.; Hickerson, T. W.; Jatko, W. B.; Labaj, L. E. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Applications of a fast, continuous wavelet transform

A fast, continuous, wavelet transform, based on Shannon`s sampling theorem in frequency space, has been developed for use with continuous mother wavelets and sampled data sets. The method differs from the usual discrete-wavelet approach and the continuous-wavelet transform in that, here, the wavelet is sampled in the frequency domain. Since Shannon`s sampling theorem lets us view the Fourier transform of the data set as a continuous function in frequency space, the continuous nature of the func… more

Date: February 1, 1997

Creator: Dress, W. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Inductive learning as a fusion engine for mine detection

Semiotics is defined by some researchers as {open_quotes}the study of the appearance (visual or otherwise) meaning, and use of symbols and symbol systems.{close_quotes} Semiotic fusion of data from multiple sensory sources is a potential solution to the problem of landmine detection. This turns out to be significant, because notwithstanding the diversity of sensor technologies being used to attack the problem, there is no single effective landmine sensor technology. The only practical, general-… more

Date: August 1, 1997

Creator: Kercel, S. W. & Dress, W. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

A Bayesian approach to extracting meaning from system behavior

The modeling relation and its reformulation to include the semiotic hierarchy is essential for the understanding, control, and successful re-creation of natural systems. This presentation will argue for a careful application of Rosen`s modeling relationship to the problems of intelligence and autonomy in natural and artificial systems. To this end, the authors discuss the essential need for a correct theory of induction, learning, and probability; and suggest that modern Bayesian probability th… more

Date: August 1, 1998

Creator: Dress, W. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Can Cavitation Be Anticipated?

The major problem with cavitation in pumps and hydraulic systems is that there is no effective (conventional) method for detecting or predicting its inception. The traditional method of recognizing cavitation in a pump is to declare the event occurring when the total head drops by some arbitrary value (typically 3%) in response to a pressure reduction at the pump inlet. However, the device is already seriously cavitating when this happens. What is actually needed is a practical method to detect… more

Date: April 25, 1999

Creator: Allgood, G. O.; Dress, W. B.; Hylton, J. O. & Kercel, S. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Developing a CD-CBM Anticipatory Approach for Cavitation - Defining a Model Descriptor Consistent Between Processes

A major problem with cavitation in pumps and other hydraulic devices is that there is no effective method for detecting or predicting its inception. The traditional approach is to declare the pump in cavitation when the total head pressure drops by some arbitrary value (typically 3o/0) in response to a reduction in pump inlet pressure. However, the pump is already cavitating at this point. A method is needed in which cavitation events are captured as they occur and characterized by their proces… more

Date: May 10, 1999

Creator: Allgood, G. O.; Dress, W. B. & Kercel, S. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Developing a CD-CBM Anticipatory Approach for Cavitation - Defining a Model-Based Descriptor Consistent Across Processes, Phase 1 Final Report Context-Dependent Prognostics and Health Assessment: A New Paradigm for Condition-based Maintenance SBIR Topic No. N98-114

The objective of this research, and subsequent testing, was to identify specific features of cavitation that could be used as a model-based descriptor in a context-dependent condition-based maintenance (CD-CBM) anticipatory prognostic and health assessment model. This descriptor is based on the physics of the phenomena, capturing the salient features of the process dynamics. The test methodology and approach were developed to make the cavitation features the dominant effect in the process and c… more

Date: June 1, 1999

Creator: Allgood, G. O.; Dress, W. B. & Kercel, S. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Epistemology and Rosen's Modeling Relation

Rosen's modeling relation is embedded in Popper's three worlds to provide an heuristic tool for model building and a guide for thinking about complex systems. The utility of this construct is demonstrated by suggesting a solution to the problem of pseudo science and a resolution of the famous Bohr-Einstein debates. A theory of bizarre systems is presented by an analogy with entangled particles of quantum mechanics. This theory underscores the poverty of present-day computational systems (e.g., … more

Date: November 7, 1999

Creator: Dress, W. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department