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Displaying 23026 - 23050 of 143806

Twentieth annual report on federal agency use of voluntary consensus standards and conformity assessment:

August 1, 2017

Author(s)

Nathalie Rioux

Viscosity Measurements of R32 and R410A to 350 MPa

August 1, 2017

Author(s)

Arno D. Laesecke, Scott Bair

Viscosity measurements were performed with a falling cylinder viscometer on difluoromethane (R32) and the refrigerant blend R410A (R32+R125 with 50 % by mass) at the temperatures 313.15 K, 348.15 K, and 393.15 K with pressures to 350 MPa. The measurement

Visual Analytics Tools for Sustainable Lifecycle Design: Current Status, Challenges, and Future Opportunities

August 1, 2017

Author(s)

Deverajan Ramanujan, William Z. Bernstein, Senthil K. Chandrasegaran, Karthik Ramani

The rapid rise in technologies for data collection across the entire lifecycle creates an unmatched opportunity to advance the use of data-rich tools for decision-making in lifecycle design. However, the usefulness of these technologies is limited by the

A Study on the Effect of Repeat Moderate Intensity Radiant Exposures on SCBA Facepiece Properties

July 31, 2017

Author(s)

Gavin Horn, Richard Kesler, John Regan, Daniel Madrzykowski

APPLICATION OF A MODEL OF HYDROGEN-ASSISTED FATIGUE CRACK GROWTH IN 4130 STEEL

July 31, 2017

Author(s)

Andrew Slifka, Robert L. Amaro, Devin T. O'Connor, Benjamin E. Long, Elizabeth S. Drexler

In this work, we applied a finite element model to predict the cyclic lifetime of 4130 steel cylinders under the influence of hydrogen. This example is used to demonstrate the efficacy of a fatigue crack growth (FCG) model we have developed. The model was

Automated Planning for Robotic Cleaning Using Multiple Setups and Oscillatory Tool Motions

July 31, 2017

Author(s)

Ariyan M. Kabir, Krishnanand N. Kaipa, Jeremy Marvel, Satyandra K. Gupta

This paper presents planning algorithms for robotic cleaning of stains on non-planar surfaces. Access to different portions of the stain may require frequent repositioning and reorienting of the object. Some portions with prominent stain may require

Autonomous Relocation Strategies for Cells on Wheels in Environments with Prohibited Areas

July 31, 2017

Author(s)

Kamran Sayrafian, Ladan Rabieekenari, John Baras

Public safety organizations increasingly rely on wireless technology for their mission critical communication during disaster response operations. In such situations, a communication network could face much higher traffic demands compared to its normal

COMPUTATIONAL MODELING OF HYDROGEN-ASSISTED FATIGUE CRACK GROWTH IN PIPELINE STEELS

July 31, 2017

Author(s)

Andrew Slifka, Robert L. Amaro, Elizabeth S. Drexler, Devin T. O'Connor, Benjamin E. Long

In this work we further develop a model to predict hydrogen-assisted fatigue crack growth in steel pipelines and pressure vessels. This implementation of the model is informed by finite element code, which uses an elastic-plastic constitutive model in

Entanglement area laws for long-range interacting systems

July 31, 2017

Author(s)

Zhe-Xuan Gong, Michael Foss-Feig, Fernando Brandao, Alexey Gorshkov

Evaluation Infrastructure for the Measurement of Content-based Video Quality and Video Analytics Performance

July 31, 2017

Author(s)

Haiying Guan, Daniel F. Zhou, Jonathan G. Fiscus, John S. Garofolo, James M. Horan

In this report we describe a novel framework for evaluation of video analytics which uses video quality metric prediction as a measurement of the system performance. This system is used to improve overall video analytics system performance. The primary

NIST Interlaboratory Study on the Glycosylation of NISTmAb, a Monoclonal Antibody Reference Material, June 2015 to February 2016

July 31, 2017

Author(s)

Maria Lorna A. De Leoz, David L. Duewer, Stephen E. Stein

The National Institute of Standards and Technology coordinated an interlaboratory study for laboratories that measure glycosylation in monoclonal antibodies. This report describes the design of and results for the NIST Interlaboratory Study on the

NIST/NIH Vitamin D Metabolites Quality Assurance Program Report of Participant Results: Summer 2016 Comparability Study (Exercise 12)

July 31, 2017

Author(s)

Mary Bedner, Carolyn Q. Burdette

The National Institute of Standards and Technology (NIST) has established a Vitamin D Metabolites Quality Assurance Program (VitDQAP) in collaboration with the National Institutes of Health (NIH) Office of Dietary Supplements. Participants in the twelfth

Progress on Vacuum-to-Air Mass Calibration System Using Magnetic Suspension to Disseminate the Planck-constant Realized Kilogram

July 31, 2017

Author(s)

Eric C. Benck, Corey A. Stambaugh, Edward C. Mulhern, Patrick J. Abbott, Zeina J. Kubarych

The kilogram is the unit of mass in the International System of units (SI) and has been defined as the mass of the International Prototype Kilogram (IPK) since 1889. In the future, a new definition of the kilogram will be based on precise measurements of

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