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Displaying 6251 - 6275 of 9857

Does ITZ influence moisture transport in concrete?

July 24, 2022
Author(s)
Laura E. Dalton, Jacob LaManna, Scott Jones, Mohammad Pour-Ghaz
The contributions of the interfacial transition zone (ITZ) to mass transport in cement-based materials remain ambiguous and disputed. In this study, the neutron and X-ray tomography (NeXT) system is used to capture unsaturated moisture flow in a concrete

Design of a 3000 pixel transition-edge sensor x-ray spectrometer for microcircuit tomography

August 1, 2021
Author(s)
Paul Szypryt, Douglas Bennett, William J. Boone, Amber L. Dagel, G Dalton, William Doriese, Malcolm Durkin, Joseph Fowler, Edward Garboczi, Jonathon D. Gard, Gene Hilton, Jozsef Imrek, E S. Jimenez, Vincent Y. Kotsubo, K Larson, Zachary H. Levine, John Mates, D McArthur, Kelsey Morgan, Nathan J. Nakamura, Galen O'Neil, Nathan Ortiz, Christine G. Pappas, Carl Reintsema, Dan Schmidt, Daniel Swetz, K R. Thompson, Joel Ullom, C Walker, Joel C. Weber, Abigail Wessels, J W. Wheeler
Feature sizes in integrated circuits have decreased substantially over time, and it has become increasingly difficult to three-dimensionally image these complex circuits after fabrication. This can be important for process development, defect analysis, and

An Assistive Learning Workflow on Annotating Images for Object Detection

December 9, 2019
Author(s)
Vivian W. Wong, Max K. Ferguson, Kincho H. Law, Yung-Tsun Lee
We present an end-to-end workflow to generate annotated image datasets for object detection. With this workflow, which we call assistive learning, we are able to reduce manual annotation time on two experimental datasets by 79.4% and 83.1%. The

Thermodynamic properties of 1-phenylnaphthalene and 2-phenylnaphthalene

January 18, 2014
Author(s)
Robert D. Chirico, Andrei F. Kazakov, William V. Steele
Measurements leading to the calculation of thermodynamic properties in the ideal-gas state for 1- phenylnaphthalene (Chemical Abstracts registry number [605-02-7]) and 2-phenylnaphthalene (Chemical Abstracts registry number [612-94-2]) are reported

Porosity of Additive Manufacturing Parts for Process Monitoring

July 26, 2013
Author(s)
John A. Slotwinski, Edward J. Garboczi
Some metal additive manufacturing processes can produce parts with internal porosity, either intentionally (with careful selection of the process parameters) or unintentionally (if the process is not well understood.) Material porosity is undesirable for

Automated Multiprobe Microassembly using Vision Feedback

October 5, 2012
Author(s)
John D. Wason, John T. Wen, Jason J. Gorman, Nicholas Dagalakis
This paper describes the algorithm development and experimental results of a vision-guided multi-probe microassembly system. The key focus is to develop the capabilities required for the construction of three dimensional (3D) structures using only planar

Comparison of Measured and Predicted Tracer Gas Concentrations in a Townhouse

August 1, 2003
Author(s)
Steven J. Emmerich, Steven J. Nabinger, A Gupte, Cynthia H. Reed, L A. Wallace
To further validate the use of the multizone airflow and contaminant model, CONTAMW, experiments were performed in an occupied 3-story townhouse in Reston, VA. A tracer gas, sulfur hexaflouride (SF6), was manually injected within one room of the house and

Validation of CONTAMW Predictions for Tracer Gas in a Townhouse

August 1, 2003
Author(s)
Steven J. Emmerich, Steven J. Nabinger, A Gupte, Cynthia H. Reed
To provide additional validation data for the multizone airflow and contaminant model, CONTAMW, experiments were performed in an occupied 3-story townhouse in Reston, VA. A tracer gas, sulfur hexaflouride (SF 6), was manually injected within one room of

Simulations of the Thermal Conductivity in the Vicinity of the Critical Point

September 1, 1998
Author(s)
D J. Searles, D J. Evans, Howard J. Hanley, S Murad
Isothermal-isobaric nonequilibrium molecular dynamics and Green-Kubo simulations are developed and used to calculate the thermal conductivity of an 864 particle Lennard-Jones fluid, with one simulation for 6912 particles, in the vicinity of the critical

Using Logic to Specify Shapes and Spatial Relations in Design Grammars

March 1, 1996
Author(s)
Scott Chase
Shape algebraic representations provide several advantages over more traditional geometric representations. The use of predicate logic formulations of shape and spatial relations provides a natural, intuitive way to extend shape representations of the

Implicitly Coupling Heat Conduction Into a Zone Fire Model (NISTIR 4886)

July 1, 1992
Author(s)
W F. Moss, Glenn P. Forney
This report examines several methods for coupling the partial differential equations that arise in conductive heat transfer with the ordinary differential equations that arise in zone fire modeling. Two existing algorithms (method of lines and time

The NIST STEP Class Library STEP Into the Future

August 1, 1990
Author(s)
Michael Mclay, KC Morris
This paper describes a C++ class library that implements the Standard for the Exchange of Product Model Data (STEP). The STEP Class Library (SCL) is under development at the National Institute of Standards and Technology as part of the National PDES

Accuracy, Integrity, and Security in Computerized Vote-Tallying

August 1, 1988
Author(s)
Roy Saltman
Recommendations are provided to promote accuracy, integrity, and security in computerized vote-tallying, and to improve confidence in the results produced. The recommendations respond to identified problems, and concern software, hardware, operational

Slide-Rule Estimates of Fire Growth.

June 1, 1985
Author(s)
James R. Lawson, Jim G. Quintiere
A series of prediction methods have been assembled to provide an analytical basis for estimating fire growth in compartments. Solutions for each prediction method can be made using programmable scientific calculators. Prediction methods are presented for

FireCAD Development for Hazard Analysis

August 10, 1997
Author(s)
J. A. Cappuccio, Walter W. Jones, Glenn P. Forney
ABSTRACT ONLY This paper addresses the development of FireCAD, a tool for performing Fire Hazard Analysis using the capabilities of the computer aided design tool, AUTOCAD, and the zone fire model, CFAST. FireCAD uses an AUTOCAD drawing as a basis for
Displaying 6251 - 6275 of 9857
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