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Displaying 5751 - 5775 of 9857

Users Guide to the HVACSIM+ Configuration Tool

September 2, 2020
Author(s)
Michael A. Galler
HVACSIM+ (HVAC SIMulation PLUS other systems) was introduced by the National Institute of Standards and Technology (NIST) in 1985 as a computer simulation tool to simulate building systems. The HVACSIM+ computer program package and manuals have been

Overshoot Mitigation Using the Reference Governor Framework

January 12, 2020
Author(s)
DJ Anand, Hamid Ossareh, Collin Freiheit
This paper presents a novel reference governor scheme for overshoot mitigation in a tracking control system. Our proposed scheme, referred to as the Reference Governor with DynamicConstraint (RG-DC), recasts the overshoot mitigation problem as a constraint

Modeling Core-Hole Screening in Core-Excitation Spectroscopies

October 16, 2008
Author(s)
Eric L. Shirley, J A. Soininen, J J. Rehr
We consider screening of the core-hole potential experienced by the ejected electron in core-excitation processes. This potential affects near-edge structure strongly, but it appears difficult to consistently obtain reliable screened core-hole potentials

Software Architecture of Virtual Environment for Nano Scale Assembly (VENSA)

August 1, 2003
Author(s)
Kevin W. Lyons, Yung-Tsun T. Lee
Virtual Environment (VE) uses various computer-generated media to let a user experience situations that are temporally and spatially prohibiting. The information flow between the user and the VE is bi-directional. The user can influence the environment

Toward Next-Generation Construction Machines

March 4, 2001
Author(s)
Roger V. Bostelman, James S. Albus, William C. Stone
Construction equipment is typically massive and operated manually with minimal use of sensors or computers for measurement or control. Research in the Intelligent Systems and Structures Divisions at the National Institute of Standards and Technology has

Criteria Analysis

October 1, 1999
Author(s)
Neil Christopher, Jim G. Nell
This document describes a research project to recommend a decision tool that the Manufacturing Systems Integration Division (MSID) could use during its strategic-planning process to evaluate which standards activities to support. This paper describes the

4-D/RCS Reference Model Architecture for Unmanned Ground Vehicles

April 1, 1999
Author(s)
James S. Albus
4-D/RCS is the reference model architecture currently being developed for the Demo III Experimental Unmanned Vehicle program. 4-D/RCS integrates the NIST (National Institute of Standards and Technology) RCS (Real-time Control System) with the German

Integral Equations for 3-D Scattering: Finite Strip on a Substrate

November 28, 2008
Author(s)
Egon Marx
Singular integral equations that determine the exact fields scattered by a dielectric or conducting finite strip on a substrate are presented. The computation of the image of such a scatterer from these fields by Fourier optics methods is also shown.

TREC: Continuing Information Retrieval's Tradition of Experimentation

November 26, 2007
Author(s)
Ellen M. Voorhees
This article provides a high-level overview of the history, results and impact of NIST's Text REtrieval Conference (TREC). The article will appear in a special issue of the Communications of the ACM devoted to experimentation in computer science.

On Feedback Functions of Maximum Length Nonlinear Feedback Shift Registers

August 2, 2010
Author(s)
Cagdas Calik, Meltem Sonmez Turan, Ferruh Ozbudak
Feedback shift registers are basic building blocks for many cryptographic primitives. Due to the insecurities of Linear Feedback Shift Register (LFSR) based systems, the use of Nonlinear Feedback Shift Registers (NFSRs) became more popular. In this work

A Behavioral Model for Reducing the Complexity of Mixer Analysis and Design

May 11, 2005
Author(s)
Alessandro Cidronali, Giovanni Loglio, Jeffrey Jargon, Gianfranco Manes
This paper considers an approach for the behavioral modeling of the conversion mechanism in a nonlinear device suitable for the analysis of RF/microwave mixers. The core of the model consists of the conversion matrix of the nonlinear cell under

Expanding Definitions of Gain by Taking Harmonic Content into Account

September 1, 2003
Author(s)
Jeffrey Jargon, Kuldip Gupta, Alessandro Cidronali, Donald C. DeGroot
We expand the definitions of power gain, transducer gain, and available gain by taking harmonic content into account. Furthermore, we show that under special conditions, these expanded definitions of gain can be expressed in terms of nonlinear large-signal

Applications of Artificial Neural Networks to RF and Microwave Measurements

January 1, 2002
Author(s)
Jeffrey Jargon, Kuldip Gupta, Donald C. DeGroot
This article describes how artificial neural networks (ANNs) can be used to benefit a number of RF and microwave measurement areas including vector network analyzer (VNA) calibrations, power, and material characterization. We apply ANNs to model a variety

Segmentation for Robust Tracking in the Presence of Severe Occlusion

December 3, 2001
Author(s)
Camillo A. Gentile, M Sznaier, O Camps
Tracking an object in a sequence of images can fail due to partial occlusion or clutter. Robustness can be increased by tracking a set of parts, provided that a suitable set can be identified. In this paper we propose a novel segmentation, specifically
Displaying 5751 - 5775 of 9857
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