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Conferences

The Revision of Standard 62: What a Difference a Decade Makes

June 1, 2002

Author(s)

Andrew K. Persily

The American Society of heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) has been revising Standard 62,Ventilation for Acceptable Indoor Air...

Measured Versus Predicted Performance of Building Integrated Photovoltaics

June 1, 2002

Author(s)

Mark W. Davis, Arthur H. Fanney, Brian P. Dougherty

The lack of predictive performance tools creates a barrier to the widespread use of building integrated photovoltaic panels. The National Institute of Standards...

High-Strength Concrete at High Temperature - An Overview

June 1, 2002

Author(s)

Long T. Phan

This paper presents results of NIST's experimental program on the effects of elevated temperature exposure on the mechanical properties and potential for...

Data-Assisted Design for Wind Loading

June 1, 2002

Author(s)

Emil Simiu, Fahim Sadek, T Whalen, S Jang, L L. Lu, S M. Diniz, A Grazini, Michael A. Riley

Current ASCE Standard provisions on wind loads for low-rise building design are based on wind tunnel tests conducted at the University of Western Ontario in the...

Compact Force Sensors for Low-Force Mechanical Probe Calibration

June 1, 2002

Author(s)

Douglas T. Smith, S Woody, Jon R. Pratt

The loading mechanisms of instrumented indentation machines are often calibrated using deadweights. In many cases, due to the geometry of the loading frame, the...

E-Glass/DGEBA/m-PDA Model Composites: Time Dependent Failure in a Brittle Multi-Fiber Composite

June 1, 2002

Author(s)

Gale A. Holmes, Walter G. McDonough

The fiber-direction properties of a unidirectional laminate are generally considered to be fiber-dominated and the elastic modulus may be predicted by the Rule...

Convective and Morphological Instabilities During Crystal Growth

June 1, 2002

Author(s)

Geoffrey B. McFadden, Sam R. Coriell, B T. Murray

During crystal growth or solidification of a binary alloy from a liquid phase, temperature and solute gradients are inherently present and can give rise to...

Statistical Uncertainty Analysis of CCEM-K2 Comparisons of Resistance Standards

June 1, 2002

Author(s)

Nien F. Zhang, N Sedransk, Dean G. Jarrett

Details of the statistical uncertainty analysis applied to key comparison CCEM-K2 are reported. Formulas were derived to determine the uncertainty of the...

The Magic of Cryogenics

June 1, 2002

Author(s)

D P. Vigliotti, J B. Alcorn, B P. Marsh, N A. Neumeyer

The purpose of this presentation is to introduce teachers to a demonstration that exposes K-12 students to a variety of scientific areas through experiments...

Quantitative Elastic-Property Information With Acoustic AFM: Measurements and Modeling

June 1, 2002

Author(s)

Donna C. Hurley, J S. Wiehn, J Turner, Paul Rice

To investigate nanoscale mechanical behavior, new approaches using dynamic modes of the atomic force microscope cantilever are being developed. One method...

Whisker Formation on Electroplated Sn-Cu

June 1, 2002

Author(s)

Maureen E. Williams, C E. Johnson, Kil-Won Moon, Gery R. Stafford, C A. Handwerker, William J. Boettinger

The probability of whisker growth on as-deposited tin (Sn) electrodeposits has been measured as a function of copper (Cu superscript2+) addition to a commercial...

Martensitic Transformations in Constrained Films

June 1, 2002

Author(s)

Alexander L. Roytburd, Julia Slutsker

Polydomain micro- and nano-structures are natural products of phase transformations in solids. The trend to minimize the energy of internal long-range fields...

Measurement of Residual Stress in Bent Pipelines

June 1, 2002

Author(s)

G A. Alers, Joseph D. McColskey

Buried gas and oil pipelines can be subjected to unexpected bending loads causedby such earth movements as earthquakes, wash-outs, road building, mining...

Composition and Morphology Changes and their Influence on Hydrogen Evolution on Ni-Mo and Fe-Mo Alloys Electrodeposited by DC and Pulsed Current

June 1, 2002

Author(s)

V D. Jovic, B M. Jovic, Gery R. Stafford

Ni-Mo and Fe-Mo alloys were electrodeposited using both DC and pulsed current from a phyrophosphate bath. Their composition and morphology were investigated by...

High Frequency Dielectric Relaxation in Polymers Filled With Ferroelectric Ceramics

June 1, 2002

Author(s)

N Noda, Jan Obrzut

We investigated the dielectric relaxation process in high-dielectric constant polymer composite films filled with barium titanate particles. In order to extend...

PMD Measurement Techniques - Avoiding Measurement Pitfalls

June 1, 2002

Author(s)

Paul A. Williams

Polarization-mode dispersion (PMD) is an interesting phenomenon. Unfortunately, interesting usually means complicated, and that is definitely the case with PMD...

Key Comparisons for Dummies: Lessons Learned

June 1, 2002

Author(s)

Dean G. Jarrett

This paper will discuss some of the challenges encountered during a recent key comparison. From these experiences, general lessons will be drawn that should...

A 10T Mohm Per Step Hamon Transfer Standard

June 1, 2002

Author(s)

Dean G. Jarrett

To evaluate high resistance measurements and scaling in the range 1 Tohm to 100 Tohm, a 10 Tohm per step Hamon transfer standard is being developed. The design...

Modeling CPU Demand in Heterogeneous Active Networks

June 1, 2002

Author(s)

V Galtier, Kevin L. Mills, Y Carlinet

Active-network technology envisions deployment of virtual execution environments within network elements, such as switches and routers. As a result, application...

Multizone Modeling Approaches to Contaminant-Based Design

June 1, 2002

Author(s)

A L. Musser, Andrew K. Persily

Indoor air quality is currently addressed in the design process primarily through prescriptive building codes based on specified flow rates. However, a...

Evaluation of Carbon Dioxide as R-22 Substitute for Residential Air-Conditioning

June 1, 2002

Author(s)

J S. Brown, Y Kim, Piotr A. Domanski

This paper compares performance of CO2 and R22 in residential air conditioning applications using semi-theoretical vapor compression and transcritical cycle...

Modeling the Performance of a Naturally Ventilated Commercial Building with a Multizone Coupled Thermal/Airflow Simulation Tool

June 1, 2002

Author(s)

James W. Axley, Steven Emmerich, George Walton

Naural ventilation systems have long been employed in European residences to control indoor air quality. European building designers have turned to natural...

Fragility Curves, Damage Matrices, and Wind-Induced Loss Estimation

June 1, 2002

Author(s)

James J. Filliben, K Gurley, J P. Pinelli, Emil Simiu, M Subramanian

This note presents a conceptual framework for the definition of basic damage states and of the corresponding fragility curves and conditional probabilities, and...

Structural Reliability Estimates and Database-Assisted Design for Wind

June 1, 2002

Author(s)

F Minciarelli, Fahim H. Sadek, Emil Simiu, Mircea Grigoriu

We propose a probabilistic methodology for developing improved estimates of extreme wind effects and load factors in standard provisions for wind loads. We...

An AC Josephson Source for Johnson Noise Thermometry

June 1, 2002

Author(s)

Samuel Benz, John M. Martinis, Paul Dresselhaus, Sae Woo Nam

We have adapted the Josephson arbitrary waveform synthesizer to create a quantized voltage source suitable for calibrating the cross-correlation electronics of...

A New Approach to Johnson Noise Thermometry Using a Quantum Voltage Noise Source for Calibration

June 1, 2002

Author(s)

Sae Woo Nam, Samuel Benz, Paul Dresselhaus, Weston L. Tew, David R. White, John M. Martinis

We describe a new approach to Johnson Noise Thermometry (JNT) that addresses certain limitations found in the conventional approach. The concept takes advantage...

Error Measurements and Analysis for an AC Josephson Voltage Standard

June 1, 2002

Author(s)

Charles J. Burroughs, Samuel Benz, Paul Dresselhaus

The Josephson arbitrary waveform synthesizer can be used as a precision voltage source for both ac and dc signals. Recent improvements in circuit designs have...

Advances in Weld Hydrogen Sensors

June 1, 2002

Author(s)

David Olson, B. Mishra, R D. Smith, S. Niyomsoan, P. Termsuksawad, Y D. Park, V I. Kaydanov, Z Gavra, Ronald B. Goldfarb

Through the application of modern physics concepts, advanced hydrogen sensors are being developed for rapid determination of weld hydrogen content and...

Video Transmission for 3G Mobile Communication Systems

June 1, 2002

Author(s)

Hamid Gharavi, K Ban

This paper presents the design and implementation of a mobile ad-hoc network for video communications. The network architecture is based on cluster-to-cluster...

Vibrational Population Control in Liquid-Phase Metal Carbonyls

June 1, 2002

Author(s)

V D. Kleiman, Joseph S. Melinger, Edwin J. Heilweil

Broadband picosecond and femtosecond mid-infrared chirped-pulse excitation with broadband probe techniques are being explored at NIST using multi-element, mid...

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