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Conferences

Analysis of a Half-Scale Composite Floor System Test under Column Loss Scenarios

April 23, 2015

Author(s)

Joseph A. Main, Jonathan M. Weigand, Eric S. Johnson, Tim Francicso, Judy Liu, Jeffrey W. Berman, Larry A. Fahnestock

This paper describes modeling and analysis of a half-scale steel gravity frame system with composite concrete slab on steel deck that was constructed and tested...

Assessment of First Generation Performance-based Seismic Design Methods: Case Study on a 4-story Reinforced Concrete Special Moment Frame

April 23, 2015

Author(s)

Siamak Sattar, Anne M. Hulsey

The anticipated performance of a 4-story reinforced concrete (RC) building designed in accordance with ASCE/SEI 7, is assessed using ASCE/SEI 41. Engineering...

Overview of the TREC 2014 Clinical Decision Support Track

April 22, 2015

Author(s)

Ellen M. Voorhees

The Text REtrieval Conference (TREC) Clinical Decision Support Track fosters research on systems that link electronic health records with information that is...

Community Resilience of the Built Environment

April 22, 2015

Author(s)

Therese P. McAllister

Buildings, facilities, and infrastructure systems play a key role in the life of a community by supporting housing, business, government, industry, and other...

ASCE/SEI 7 Appendix E Proposal: Performance-Based Design Procedures for Fire Effects on Structures

April 22, 2015

Author(s)

Therese P. McAllister, Kevin La Malva, Maria Garlock

The ASCE/SEI Technical Committee on Fire Protection was formed in 2012 to support professional structural engineers conducting performance-based design of...

A Fast and Self-Consistent Approach for Multi-Cycle Equilibrium Core Studies using Monte Carlo Models

April 19, 2015

Author(s)

Zeyun NMN Wu, Robert E. Williams

A fast and self-consistent approach, PRELIM approach, is described in this paper with the aim of quickly delivering a multi-cycle equilibrium configuration...

Real Gas Corrections for High Beta Ratio Critical Flow Venturi (CFV) Installations.

April 17, 2015

Author(s)

Aaron N. Johnson, Eric W. Lemmon

For almost 50 years flow measurement applications using critical flow venturis (CFVs) have relied exclusively on the critical flow function (C*) to correct for...

Design and Capabilities of NISTs Scale-Model Smokestack Simulator (SMSS)

April 17, 2015

Author(s)

Aaron N. Johnson, Joey T. Boyd, Eric Harman, Mohammad M. Khalil, Jacob E. Ricker, Christopher J. Crowley, Rodney A. Bryant, Iosif I. Shinder

The amount of CO 2 emitted from a coal-fired power plant (CFPP) is measured by continuous emissions monitoring systems (CEMS) permanently installed in the...

Equivalence Class Verification and Oracle-Free Testing Using Two-layer Covering Arrays

April 17, 2015

Author(s)

David R. Kuhn, Raghu N. Kacker, Yu Lei, Jose Torres-Jimenez

This short paper introduces a method for verifying equivalence classes for module/unit testing. This is achieved using a two-layer covering array, in which some...

Forming limit diagram predictions using a self-consistent crystal plasticity model: a parametric study

April 15, 2015

Author(s)

Youngung Jeong, Minh-Son Pham, Mark A. Iadicola, Adam A. Creuziger

A numerical model to predict forming limit diagram (FLD) for polycrystalline metal sheets is presented. In it, the Marciniak-Kuczynski (MK) approach is...

Micro-Flow Calibration Facility at NIST

April 15, 2015

Author(s)

James W. Schmidt, John D. Wright

The Fluid Metrology Group (FMG) at NIST is developing a primary, dynamic gravimetric liquid flow standard for use in the range 1 mL/min to 100 nL/min (and...

The Effect of Liquid Kinematic Viscosity and Drain Time on the Volume Delivered from a Test Measure

April 14, 2015

Author(s)

John D. Wright, Sherry D. Sheckels, Lachance Christian, Farhad Sharifi, Dominic Ondoro

Volume test measures are used for calibration and traceability of petroleum measurements and their low uncertainty is important for the equitable trade of...

Thermal Effects on Critical Flow Venturis

April 14, 2015

Author(s)

John D. Wright, Aaron N. Johnson, Michael R. Moldover, Woong Kang, Liang Zhang

Critical flow venturis (CFVs) are widely used as working and transfer standards for gas flow measurement because of their long-term calibration stability (5 (e...

NISTs New 3D Airspeed Calibration Rig, Addresses Turbulent Flow Measurement Challenges

April 14, 2015

Author(s)

Iosif I. Shinder, Vladimir Khromchenko, Michael R. Moldover

Outdoor air flows and flue-gas flows in large conduits and large stacks have significant swirl and turbulence. Accurate measurements of such complex flows are...

Privacy Amplification in the Isolated Qubits Model

April 14, 2015

Author(s)

Yi-Kai Liu

Isolated qubits are a special class of quantum devices, which can be used to implement tamper-resistant cryptographic hardware such as one-time memories (OTM's)...

Scatterfield Microscopy and the Fundamental Limits of Optical Defect Metrology

April 14, 2015

Author(s)

Richard M. Silver, Bryan M. Barnes, Martin Y. Sohn, Hui Zhou

Defect inspection remains a critical manufacturing challenge due to the competing requirements between throughput and very high resolution. Currently only...

Frontiers of Characterization and Metrology for Nanoelectronics: 2015

April 14, 2015

Author(s)

Erik M. Secula, David G. Seiler

Pass / Fail / Inconclusive Criteria for Inter-Laboratory Comparisons

April 14, 2015

Author(s)

Blaza Toman, Bodo Mickan, Gerd Wubbeler, Olha Bodnar, Clemens Elster, John D. Wright

Inter-laboratory comparisons use the best available transfer standards to check participants uncertainty analyses, identify underestimated uncertainty claims or...

NIST's Fully Dynamic Gravimetric Liquid Flowmeter Standard.

April 13, 2015

Author(s)

Jodie G. Pope, Aaron N. Johnson, Bernard J. Filla, Joey T. Boyd, Vern E. Bean, Christopher J. Crowley

We describe a new dynamic, gravimetric, liquid flow standard (LFS) that determines flow by measuring the rate of change of the liquid mass accumulating in a...

Long-Term Uncertainty in Time Transfer Using GPS and TWTFT Techniques

April 13, 2015

Author(s)

Victor S. Zhang, Thomas E. Parker, Jian Yao

The techniques of GPS time and frequency transfer (code based and carrier phase) and two-way satellite time and frequency transfer (TWSTFT) are widely used in...

Bias Corrections in Primary Frequency Standards

April 13, 2015

Author(s)

Thomas E. Parker, Thomas P. Heavner, Steven R. Jefferts

Primary frequency standards serve the function of calibrating the rate of International Atomic Time, TAI, and therefore play a critical role in the accuracy of...

A New Modem for Two Way Satellite Time and Frequency Transfer

April 13, 2015

Author(s)

Shengkang Zhang, Xueyun Wang, Haifeng Wang, Hongbo Wang, Yuan Yuan, Keming Feng

Two Way Satellite Time Frequency Transfer (TWSTFT) is a highly precise time & frequency remote comparison technique, which is widely used in time metrology...

Bias Corrections in Primary Frequency Standards

April 13, 2015

Author(s)

Steven R. Jefferts, F Levi

Corrections to Primary Frequency Standards (PFS) or Secondary Frequency Standards (SFS) for offsets caused by various physical phenomena, e.g. Zeeman shifts or...

Configurable Robotic Millimeter-Wave Antenna Facility

April 13, 2015

Author(s)

Jeffrey R. Guerrieri, Joshua A. Gordon, David R. Novotny, Michael H. Francis, Ronald C. Wittmann, Miranda L. Butler

This paper introduces the Configurable Robotic Millimeter-Wave Antenna (CROMMA) facility by the Antenna Metrology Lab at the National Institute of Standards and...

Traceability for Microwave Power Measurements: Past, Present, and Future

April 13, 2015

Author(s)

Ronald A. Ginley

The need for traceable microwave power measurements for use in communications, defense, spectral line investigation, molecular particle signature identification...

Improving IPOGs Vertical Growth Based on a Graph Coloring Scheme

April 13, 2015

Author(s)

Raghu N. Kacker, David R. Kuhn, Yu Lei

In this paper, we show that the vertical growth phase of IPOG is optimal for t-way test generation when t = 2, but it is no longer optimal when t is greater...

Constraint Handling In Combinatorial Test Generation Using Forbidden Tuples

April 13, 2015

Author(s)

Raghu N. Kacker, David R. Kuhn, Yu Lei

Constraint handling is a challenging problem in combinatorial test generation. In general, there are two ways to handle constraints, i.e., constraint solving...

Time Signals Converging within Cyber-Physical Systems

April 12, 2015

Author(s)

Marc A. Weiss, Sundeep Chandhoke, Hugh Melvin

Time is central to predicting, measuring and controlling properties of the physical world, and is one of the most important constraints distinguishing Cyber...

Practical Limitations of NTP Time Transfer

April 12, 2015

Author(s)

Andrew N. Novick, Michael A. Lombardi

The Network Time Protocol (NTP) is commonly utilized to synchronize computer clocks in packet-switched, wide area networks (WANs) such as the public Internet...

Comparison of Two Continuous GPS Carrier-Phase Time Transfer Techniques

April 12, 2015

Author(s)

Jian Yao, Skakun Ivan, Zhiheng Jiang, Judah Levine

Global Positioning System (GPS) carrier-phase (CP) time transfer, as a widely accepted high-precision time transfer method, frequently shows a data-batch...

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