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Conferences

AC Waveform Source Referenced to a Programmable Josephson Voltage Standard

August 24, 2014

Author(s)

Alain Rufenacht, Charles J. Burroughs, Bryan C. Waltrip, Stephane P. Solve, Paul D. Dresselhaus, Samuel P. Benz

We are integrating an AC waveform source into our Programmable Josephson Voltage Standard system (PJVS). The objective is to provide a convenient, highly...

AC-DC Transfer Standard Measurements with a Josephson Arbitrary Waveform Synthesizer at 200 mV

August 24, 2014

Author(s)

Jason M. Underwood, Alain Rufenacht, Steven B. Waltman, Charles J. Burroughs, Paul D. Dresselhaus, Samuel P. Benz

Thermal voltage converters and transfer standards are critical components in AC electrical metrology. In order to improve the low-voltage (

Combined Analysis Of Fire Model Uncertainty And Input Parameter Uncertainty For Nuclear Power Plant Fire Scenarios

August 24, 2014

Author(s)

Kristopher J. Overholt, Martin Clouthier

Quantitative fire risk analysis can be used to conduct safety assessments at nuclear facilities to evaluate the consequences of potential fire scenarios that...

Construction and Performance of the NIST-4 Magnet System

August 24, 2014

Author(s)

Frank C. Seifert, Alireza R. Panna, Leon S. Chao, Yusi A. Cao, Darine El Haddad, Shisong Li, Stephan Schlamminger, Jon R. Pratt, Heeju Choi, Lori Haley

A watt balance is a promising instrument to realize the unit of mass at the kilogram level. The magnet system is one of the key elements of such an instrument...

Heterodyne interferometer with subnanometer accuracy

August 24, 2014

Author(s)

Darine El Haddad, Frank C. Seifert, Stephan Schlamminger, Leon S. Chao, David B. Newell, Jon R. Pratt

This paper gives a brief description of the laser interferometer system designed for the next generation watt balance experiment aimed to realize the unit of...

A New Approach to Finding a Risk-Informed Safety Factor for Fail-Safe Pressure Vessel and Piping Design

August 24, 2014

Author(s)

Jeffrey T. Fong, Nathanael A. Heckert, James J. Filliben, Pedro V. Marcal, Stephen W. Freiman

The purpose of this paper is to present a new approach to finding a risk-informed safety factor for the "fail-safe" design of a high-consequence engineering...

Relative Humidity Effects on Rectangular Waveguide Thermistor Sensors

August 24, 2014

Author(s)

Thomas P. Crowley

A correlation between the relative humidity nd the effective efficiency of several rectangular waveguide thermistor sensors has been observed. The difference...

Photonic-assisted Endoscopic Analysis of Guided W-band Pulses

August 24, 2014

Author(s)

Jeffrey A. Jargon, DongJoon Lee, JaeYong Kwon

We present a photonic-assisted time-domain measurement technique for exploring millimeter-wave propagation through a W-band waveguide. The electric fields...

The Measurement of the Local Acceleration of Gravity for the NIST4 Watt Balance

August 24, 2014

Author(s)

David B. Newell, Jacques Liard, Leon S. Chao, Yusi A. Cao, Frank C. Seifert, Darine El Haddad, Jon R. Pratt, Stephan Schlamminger

A new watt balance is being constructed at NIST in preparation for the redefinition of the International System of Units and the realization of mass through an...

Alignment and testing of the NIST Calculable Capacitor

August 24, 2014

Author(s)

Yicheng Wang, Felipe Guzman, Corey A. Stambaugh, Radek Smid, Hugo Zuniga Calvo, Andrew Koffman, Jon Pratt, John Lawall

This paper reports progress on the NIST effort to develop a new calculable capacitor, focusing on improvement of the guard electrode motion control as well as...

The Design of the NEW NIST-4 Watt Balance

August 24, 2014

Author(s)

Leon S. Chao, Stephan Schlamminger, Frank C. Seifert, Yusi A. Cao, Darine El Haddad, David B. Newell, Jon R. Pratt

The design of the new permanent-magnet driven watt balance and novel mechanical features will demonstrate the high-precision capabilities of a large complex...

Measurement of the Boltzmann Constant with Noise Thermometry at NIM

August 24, 2014

Author(s)

Jifeng Qu, Kunli Zhou, Horst Rogalla, Samuel Benz, Yunfeng Fu

Since 2010 we have been developing a quantum-voltage-calibrated Johnson noise thermometer at NIM to measure the Boltzmann constant k. With recent improvements...

Investigations on the measurement of the leakage resistance to ground of a NIST Programmable Josephson Voltage Standard

August 24, 2014

Author(s)

Stephane Solve, Regis Chayramy, Alain Rufenacht, Charles J. Burroughs, Samuel Benz

The Programmable Josephson Voltage Standard (PJVS) leakage resistance to ground (LRG) is defined as the electrical resistance of one side of the measurement...

Single-shot security for one-time memories in the isolated qubits model

August 21, 2014

Author(s)

Yi-Kai Liu

One-time memories (OTM's) are simple, tamper-resistant cryptographic devices, which can be used to implement sophisticated functionalities such as one-time...

Dielectrofluidics for Electronic-Based Chemical and Particle Analysis

August 18, 2014

Author(s)

James C. Booth, Spencer T. Egan, Charles A. Little, A Padilla, Yu Y. Wang, Nathan D. Orloff

The interactions of electromagnetic fields with matter are described by means of the polarization and magnetization of the material under study. Analogous to...

An Information Classification System for Life Cycle and Manufacturing Standards

August 18, 2014

Author(s)

Sarah Wolff, Anantha Narayanan Narayanan, David Lechevalier, KC Morris

Sustainable manufacturing aims to increase efficiency and offset negative impacts throughout the life cycle of products. A myriad of standards pertaining to...

Broadband Rydberg Atom Based Self-Calibrating RF E-field Probe

August 16, 2014

Author(s)

Christopher L. Holloway, Joshua A. Gordon, Steven R. Jefferts, Thomas P. Heavner

We present a significantly new approach for an electric (E) field probe. The probe is based on the interaction of RF-fields with Rydberg atoms, where alkali...

On the Unification of Access Control and Data Services

August 15, 2014

Author(s)

David F. Ferraiolo, Serban I. Gavrila, Wayne Jansen

A primary objective of enterprise computing (via a data center, cloud, etc.) is the controlled delivery of data services (DS). Typical DSs include applications...

Precision limitations in coherent laser ranging due to speckle phase noise

August 15, 2014

Author(s)

Esther Baumann, Jean-Daniel Deschenes, Fabrizio R. Giorgetta, William C. Swann, Ian R. Coddington, Nathan R. Newbury

The ultimate precision of coherent laser three-dimensional mapping of a diffusely scattering surface will be determined by speckle noise. Speckle phase noise...

Modeling of 2-bromotrifluoropropene flame inhibition

August 14, 2014

Author(s)

Donald R. Burgess Jr., Jeffrey A. Manion, Valeri I. Babushok, Gregory T. Linteris

We developed a new chemical mechanism for modeling flame inhibition by 2-bromotrifluoropene (2-BTP). The modeling results qualitatively predicted agent behavior...

Toward Metamodels for Composable and Reusable Additive Manufacturing Process Models

August 12, 2014

Author(s)

Paul W. Witherell, Shaw C. Feng, Timothy Simpson

Despite the existence and interest in additive manufacturing (AM) for many decades, industry adoption of AM technologies has been relatively slow. Recent...

XForms User Interfaces for Small Arcane Nontrivial Datasets

August 11, 2014

Author(s)

Joshua Lubell

Small Arcane Nontrivial Datasets (SANDs) are frequently complex enough to warrant custom software for access and editing, yet too small or specialized to...

Compressed-liquid density measurements of three alternative turbine fuels

August 10, 2014

Author(s)

Stephanie L. Outcalt

Heavier kerosene based liquid fuels for aircraft and rockets are required to meet stringent performance specifications. Nevertheless, the escalating cost...

Improved Performance, Remote Realization, and Accessibility of the Inter-American Metrology System (SIM) Time Scale

August 7, 2014

Author(s)

Michael A. Lombardi, J. Mauricio Lopez-Romero, Nelida Diaz-Munoz, E. de Carlos-Lopez

The time and frequency metrology working group of the Inter-American Metrology System (SIM) has developed and currently maintains a number of measurement...

Long Term Air Quality Monitoring in a Net-Zero Energy Residential Test Facility Designed with Specifications for Low Emitting Interior Products

August 6, 2014

Author(s)

Dustin G. Poppendieck, Lisa C. Ng, Matthew P. Schlegel, Andrew K. Persily, Alfred Hodgson

This study evaluated the effectiveness of a low-VOC (volatile organic compounds) specification designed to minimize occupant exposures to indoor air pollutants...

Long Term Emissions from Spray Polyurethane Foam Insulation

August 6, 2014

Author(s)

Dustin G. Poppendieck, Steven J. Nabinger, Matthew P. Schlegel, Andrew K. Persily

The desire to build more energy efficient homes in the United States has lead to the expansion of the residential spray polyurethane foam (SPF) insulation...

Measured Carbon Monoxide Emission Rates from Stock and Reduced- Emission Prototype Portable Generators

August 6, 2014

Author(s)

Steven J. Emmerich, Leon Wang, Andrew K. Persily

To better understand and to reduce the occurrence of carbon monoxide fatalities, this paper presents measured CO emission rates from both stock (i.e., without...

Simulation Study of Carbon Monoxide Exposure from Portable Generators in U.S. Residences

August 6, 2014

Author(s)

Andrew K. Persily, Steven J. Emmerich, Yanling Wang, Brian J. Polidoro

A simulation study was conducted to evaluate indoor CO exposures as a function of portable generator location and CO emission rate in order to support the...

Particle Image Velocimetry Experiments in a Wind Tunnel to Study Wind-driven Airflow through Building Openings

August 6, 2014

Author(s)

Liang Chung J. Lo

Todays low energy and sustainable buildings often call for innovative designs involving strategies such as natural ventilation. However, natural ventilation...

Indoor Air Quality: The Forgotten, Yet Critical, Element in Sustainable Buildings

August 6, 2014

Author(s)

Kevin Y. Teichman, Andrew K. Persily

In this paper, we consider how high performing, sustainable building programs and designs are currently addressing indoor air quality (IAQ) and how they might...

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