Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Conferences

Long Baseline Comparisons of the Brazilian National Time Scale to UTC(NIST) Using Near Real-Time and Post Processed Solutions

November 27, 2007

Author(s)

Michael A. Lombardi, Victor S. Zhang, Ricardo de Carvalho

We present the results of C/A code common-view GPS comparisons between the UTC(NIST) time scale, located at the National Institute of Standards and Technology

Long-term Stability of Remote Clock Comparisons with IGS Clock Products

November 27, 2007

Author(s)

Victor S. Zhang, Thomas E. Parker, Marc A. Weiss

The International GNSS Service (IGS) clock products contain clock information of the local reference for the IGS tracking receivers with respect to the IGS time

Standard Time and Frequency Dissemination via Eqyptian Digital Satellite

November 27, 2007

Author(s)

John P. Lowe, Jason Heidecker, Mohamed A. Swidan, Ahmed Hisham, Safaa Samuel

The Egyptian Satellite Company and the National Institute for Standards (NIS) in Egypt, with technical assistance from the National Institute of Standards and

A Simplified Laser and Optics System for Laser-Cooled Rb Fountain-Frequency-Standards

November 27, 2007

Author(s)

Paul D. Kunz, Thomas P. Heavner, Steven R. Jefferts

We are developing a simple and robust laser and optics system suitable for a transportable laser-cooled Rubidium (Rb) atomic fountain frequency standard. This

A Frequency-Dependence Model for the Ultra-Wideband Channel based on Propagation Events

November 26, 2007

Author(s)

Camillo A. Gentile, Alfred Kik

While the frequency-dependence of the wireless channel may be negligible for narrow to wideband signals, it has been shown that modeling this dependence for

A Load Balancing Algorithm to Overcome the Rate-Limiting Effects in IEEE 802.11 Networks

November 26, 2007

Author(s)

Vincent Gauthier, Richard A. Rouil, Nada T. Golmie

In an IEEE 802.11 network, a single user can reduce the performance of all other users attached to the same access point. To overcome this problem, we propose

Closed Loop CNC Manufacturing -- Connecting the CNC to the Enterprise

November 26, 2007

Author(s)

Sid Venkatesh, Rich Morihara, John L. Michaloski, Frederick M. Proctor

Closed Loop manufacturing describes the use of feedback from a Computer Numerical Control (CNC) to the Enterprise Resource Planning (ERP) to help in business

Decentralized Trust Domain Management in Multiple Grid Environments

November 25, 2007

Author(s)

Chung Tong Hu, Karen A. Scarfone, David F. Ferraiolo

Trust domain management for the global access of a grid is managed under centralized schema for most of the current grid architectures, which are designed based

Using a High-Fidelity Simulation Framework for Performance Singularity Identification and Testing

November 21, 2007

Author(s)

Christopher J. Scrapper Jr, Rajmohan Madhavan, Stephen B. Balakirsky

A common way to evaluate the performance of a system is to compare the algorithmic outputs with ground truth to identify divergences in the system's performance

A Step Towards CO2-Neutral Aviation

November 20, 2007

Author(s)

Andreja Brankovic, Robert C. Ryder, Robert C. Hendricks, Marcia L. Huber

An approximation method for evaluation of the caloric equations used in combustion chemistry simulations is described. The method is applied to generate the

Generation and Manipulation of H-Anim CAESAR Scan Bodies

November 19, 2007

Author(s)

Qiming Wang, Sanford P. Ressler

In this paper we present a procedure to create animated human models compliant with the H-Anim specification from 3D CAESAR scan bodies, which were captured

Investigation of Brinell Indentation Diameter From Confocal Microscope Measurement and FEA Modeling

November 19, 2007

Author(s)

Li Ma, Samuel Low, J J. Song

Significant measurement differences have been continually observed worldwide in the Brinell hardness tests, even in the secondary calibration laboratories that

ON LINE MONITORING SYSTEM - AN APPLICATION FOR MONITORING KEY WELDING PARAMETERS OF DIFFERENT WELDING PROCESSES

November 16, 2007

Author(s)

Thomas A. Siewert, Ivan Samard¿i¿, Zvonimir Kolumbi

This paper describes the application of an on-line monitoring system for the monitoring, aquisition and processing of key welding parameters. The on-line

Stable Navigation Solutions for Robots in Complex Environments

November 15, 2007

Author(s)

Christopher J. Scrapper Jr, Rajmohan Madhavan, Stephen B. Balakirsky

During the initial phase of a disaster response it is essential for responders to quickly and safely assess the overall situation. The use of rescue robots that

The TRECVID 2007 BBC Rushes Summarization Evaluation Pilot

November 14, 2007

Author(s)

Paul D. Over, Alan Smeaton, Phillip Kelly

This paper provides an overview of a pilot evaluation of video summaries produced automatically from unedited BBC dramatic series video. It was carried out

Preliminary Performance Assessment of Commercially-Available Hydrogen Sensors

November 12, 2007

Author(s)

Nathan D. Marsh, Thomas G. Cleary

As part of an effort to develop standard test methods for the performance of commercial hydrogen sensors, we employed the Fire Emulator / Detector Evaluator, an

Supplementary Backward Equations for the Industrial Formulation IAPWS-IF97 of Water and Steam for Fast Calculations of Heat Cycles, Boilers, and Steam Turbines

November 12, 2007

Author(s)

H J. Kretzschmar, K Knobloch, K Miyagawa, Allan H. Harvey, Wolfgang Wagner

This Extended Abstract summarizes the various supplementary equations that have been developed by the International Association for the Properties of Water and

Sources of Uncertainty for Near-Field Measurements

November 11, 2007

Author(s)

Michael H. Francis, Ronald C. Wittmann

We discuss the sources of uncertainty in near-field measurements and their impact on far-field antenna parameters. The methods of estimating these uncertainties

Repeatability Analysis on the Tool Point Dynamics for Investigations on Uncertainty in Milling Stability

November 11, 2007

Author(s)

Kang-Jae Lee, M A. Donmez

Stability analysis is needed to maximize milling performance while avoiding chatter. However, such an analysis is time-consuming, requiring the use of

Condition Monitoring of Operating Spindle Based on Stochastic Subspace Identification

November 11, 2007

Author(s)

Robert Gao, Ruqiang Yan, Li Zhang, Kang B. Lee

Accurate identification of spindle modal parameters is critical to realizing a new generation of "smart" machine tools with built-in self-diagnosis capability

Reverse Engineering the Brain

November 9, 2007

Author(s)

James S. Albus

Reverse engineering the brain will require a deep understanding of how information is represented and how computation is performed in the brain. What are the

A Novel Peak Detection Algorithm for Use in the Study of Machining Chip Segmentation

November 7, 2007

Author(s)

Eric P. Whitenton, Robert W. Ivester, Jarred C. Heigel

The study of how metal deforms and flows as parts are machined yields important insights into the metal cutting process. Improvements in high-speed digital

Measurement and Modeling of Turbulent Flow in Water Supply Systems and Its Effect on Contaminant Transport

November 4, 2007

Author(s)

Stephen J. Treado, Nicos Martys, Mark A. Kedzierski, Stephanie S. Watson, Kenneth D. Cole

This paper describes the results of a measurement and modeling research project investigating the transport, accumulation and removal of contaminants from

CHALLENGES IN THE CALIBRATION OF POLARIMETRIC RADAR CROSS SECTION MEASUREMENT SYSTEMS

November 4, 2007

Author(s)

Lorant A. Muth

We examine the calibration of polarimetric radar cross section measurement systems using a rotating dihedral and a cylinder. Stringent requirements on the

Planning User-Centered Evaluations for Interactive Information Visualizations

November 2, 2007

Author(s)

Yee-Yin Choong, Theresa O'Connell

This paper describes a user-centered methodology to evaluate innovative, complex interactive visualizations (IVs) developed for information analysis. Our

Characterization and Correction of Stray Light in Optical Instruments

November 1, 2007

Author(s)

Yuqin Zong, Steven W. Brown, G Meister, R Barnes, Keith R. Lykke

Improperly imaged, or scattered, optical radiation within an instrument is difficult to properly characterize and is often the dominant residual source of

The Marine Optical BuoY (MOBY) Radiometric Calibration and Uncertainty Budget for Ocean Color Satellite Sensor Vicarious Calibration

November 1, 2007

Author(s)

Steven W. Brown, S Flora, M Feinholz, M Yarbrough, Terrance Houlihan, D Peters, Yong S. Kim, J Mueller, Bettye C. Johnson, Dennis Clark

For the past decade, the Marine Optical Buoy (MOBY), an autonomous radiometric buoy stationed in the waters off Lanai, Hawaii, has been the primary in-water

VAST 2007 Contest - Blue Iguanadon

October 30, 2007

Author(s)

Georges Grinstein, Catherine Plaisant, Theresa O'Connell, Sharon J. Laskowski, Jean Scholtz, Mark Whiting

Visual analytics experts realize that one effective way to push the field forward and to develop metrics for measuring the performance of various visual

Effect of Static Analysis Tools on Software Security: Preliminary Investigation

October 29, 2007

Author(s)

Vadim Okun, William F. Guthrie, Romain Gaucher, Paul E. Black

Static analysis tools can handle large-scale software and find thousands of defects. But do they improve software security? We evaluate the effect of static

LMS Predictive Link Triggering for Seamless Handovers in Heterogeneous Wireless Networks

October 29, 2007

Author(s)

Sang J. Yoo, David E. Cypher, Nada T. Golmie

Effective and timely link layer trigger mechanisms can significantly influence the handover performance. In this paper, a predictive link trigger mechanism for

Was this page helpful?