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Displaying 49626 - 49650 of 73969

Characteristic Impedance of Microstrip on Silicon

October 25, 1999
Author(s)
Dylan F. Williams, Bradley K. Alpert
We compare power-voltage, power-current, and causal definitions of the characteristic impedance of microstrip transmission lines on silicon substrates.

Characteristic impedance of microstrip on silicon

October 25, 1999
Author(s)
Dylan F. Williams, Bradley K. Alpert
In this paper, we compare the power-voltage, power-current, and causal definitions of the characteristic impedance of microstrip transmission lines on silicon substrates.

Overview of the Sixth Text REtrieval Conference (TREC-6)

October 25, 1999
Author(s)
Ellen M. Voorhees, Donna K. Harman
The Text REtrieval Conference is a workshop series designed to encourage research on text retrieval for realistic applications by providing large test collections, uniform scoring procedures, and a forum for organizations interested in comparing results

Scratch Damage in Zirconia Ceramics

October 25, 1999
Author(s)
S K. Lee, Rajan Tandon, M Readey, Brian R. Lawn
Scratch damage modes in zirconia-based ceramics, Mg-PSZ, T-TZP and Ce-TZP are investigated. Precursor indentation tests with a tungsten carbide sphere foreshadow the nature of damage: in Mg-PSZ - extensive quasi-plastic deformation in the region outside

TREC-6 1997 Spoken Document Retrieval Track Overview and Results

October 25, 1999
Author(s)
John S. Garofolo, Ellen M. Voorhees, Vincent M. Stanford, K Sparck Jones
This paper describes the 1997 TREC-6 Spoken Document Retrieval (SDR) Track which implemented a first evaluation of retrieval of broadcast news excerpts using a combination of automatic speech recognition and information retrieval technologies. The

Polymer Layered-Silicate Nanocomposites: Polyamide-6, Polypropylene and Polystyrene

October 24, 1999
Author(s)
Jeffrey W. Gilman, A B. Morgan, Richard H. Harris Jr., E Manias, E P. Giannelis, M Wuthenow
In many of the cases studied, polymer-clay nanocomposites are materials that have improved thermal properties. Furthermore, most of the nanocomposite systems reported so far show reduced flammability. The delaminated versions of nanocomposites also offer

A Simple and Powerful Heuristic for Speeding Up Force-Directed Graph Layout

October 20, 1999
Author(s)
John V. Cugini, D L. Banks
Force-directed layout is a commonly used technique to generate visually pleasing representations of graphs. The calculation time for direct implementation is, however, proportional to the square of the number of nodes, thus limiting its usefulness to small

Energy Conserving Discrete Equation for Non-Ideal Systems

October 20, 1999
Author(s)
Nicos Martys
The BBGKY formalism is utilized to obtain a set of moment equations to be satisfied so as to obtain an energy conserving discrete Boltzmann equation for the case of a non-local interaction potential. A modified BGK form of the collision operator consistent

Towards a Measurement Technique for Risk Management

October 20, 1999
Author(s)
D G. Marks
The field of computer security is impeded by a lack of objective, quantitative measures. As a result, most systems, whether theoretical or actual, attempt to avoid, rather than manage, risk. Risk management requires looking at the complete protect, detect

Statistical Testing of Random Number Generators

October 19, 1999
Author(s)
D L. Banks
Random Number Generators (RNGs) are an important building block for algorithms and protocols in cryptography. They are paramount in the construction of encryption keys and other cryptographic algorithm parameters. In practice, statistical testing is

Status of the Advanced Encryption Standard (AES) Development Effort

October 19, 1999
Author(s)
James Foti
The purpose of this presentation will be to articulate the status of NIST=s Advanced Encryption Standard (AES) development effort. This presentation will include a description of the overall AES development effort, a summary of comments and analysis from

SURF III - A New Electron Storage Ring at NIST

October 15, 1999
Author(s)
R A. Bosch, D E. Eisert, Mitchell L. Furst, R M. Graves, L Greenler, A D. Hamilton, L R. Hughey, R P. Madden, P Robl, Ping-Shine Shaw, W S. Trzeciak, Robert E. Vest, D Wahl
The National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards (NBS), has operated the Synchrotron Ultraviolet Radiation Facility (SURF), based on an electron accelerator, continuously since the early 1960's. SURF I

Benchmark Database for Input and Validation of Multiphase Combustion Models.

October 11, 1999
Author(s)
J F. Widmann, S R. Charagundla, Cary Presser
Control of process efficiency and the formation of species byproducts from industrial thermal oxidation systems (e.g., power generation and treatment of liquid chemical wastes), is generally based on a priori knowledge of the input stream physical and

Calibration Particles Relevant to the Measurement of Nanosize Particles.

October 11, 1999
Author(s)
George W. Mulholland
The development of technologies associated with nanometer size particles, such as automated wafer inspection systems, requires several monosize calibration particlcs with diameters in the range from 1 nm to 100 nm. The one relevant calibration standard

Surface-Fitting Modeling of Images: Theory and Applications

October 8, 1999
Author(s)
Anastase Nakassis, Abdou S. Youssef
Image processing is a very active area with many applications. Many tasks in image processing are highly complicated, and the quality of the software and hardware systems that perform those tasks has proved to be very difficult to measure. One useful

Measurement and Certification in Information Technology

October 7, 1999
Author(s)
D Wallace
Achieving software certification may seem an unreasonable goal. When it comes to determining whether a software product is dependable, safe, and effective, consumers of many types of software are largely on their own. Yet, today's methods provide many

On Performance Statistics for Biometric Systems

October 5, 1999
Author(s)
P J. Phillips
The major contribution of this paper is a duality between the identification and verification evaluation protocols. The duality (1) gives a mapping between identification and verification scores and (2) bounds identification and verification scores in

Combustion Models for Wooden Brands.

October 4, 1999
Author(s)
J P. Woycheese, P J. Pagni
Eight combustion models for burning brands are reviewed. An averaged stagnation-point burning model, using the chemical properties of wood, is used here. Maximum propagation distances are calculated for disk-shaped brands lofted in large fires, such as

Mobile Streams: A Middleware for Reconfigurable Distributed Scripting

October 4, 1999
Author(s)
Mudumbai Ranganathan, V Schaal, V Galtier, Douglas C. Montgomery
A large class of distributed applications follow the event-driven or reactive paradigm. Such applications can benefit from Mobile Agent technology by making it easy to add re-configurability, extensibility, and failure resilience features at an application
Displaying 49626 - 49650 of 73969
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