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Displaying 17151 - 17175 of 73881

Time dependence in static measurements of vapor pressure

November 17, 2015
Author(s)
Robert F. Berg
The static method for measuring vapor pressure assumes that the sample is pure and that its temperature is steady and uniform. In practice, the measured pressure may be time dependent due to evaporative cooling after pumping on the sample, transpiration of

Electrodeposition of Al-W-Mn Ternary Alloys from the Lewis Acidic Aluminum Chloride?1-Ethyl-3-methylimidazolium Chloride Ionic Liquid

November 16, 2015
Author(s)
Gery R. Stafford, Tetsuya Tsuda, Yuichi Ikeda, Akihito Imanishi, Shohei Kusumoto, Sudsumu Kuwabata, Charles Hussey
The electrodeposition of non-equilibrium ternary Al-W-Mn alloys was examined in the Lewis acidic 66.7-33.3 mole ratio aluminum chloride–1-ethyl-3-methylimidazolium chloride (AlCl3–[C2mim]Cl) ionic liquid (IL). K3[W2Cl9] and MnCl2 were added to provide

Reduced-scale Experimental Facility to Characterize Firebrand Ignition

November 16, 2015
Author(s)
Samuel L. Manzello, Sayaka Suzuki
Large outdoor fires are a problem in Japan and the USA. In order to prevent losing structures to large outdoor fires, it is important to understand the vulnerabilities of structures to firebrand showers and then, strengthen structures to these exposures

Tailoring Security Controls for Industrial Control Systems

November 16, 2015
Author(s)
Victoria Y. Pillitteri, Larry Feldman, Gregory A. Witte
This bulletin summarizes the information presented in NIST SP 800-82, Rev 2: Guide to Industrial Control Systems (ICS) Security written by Keith Stouffer, Victoria Pillitteri, Suzanne Lightman, Marshall Abrams and Adam Hahn. The publication provides

The GenApp Framework Integrated with Airavata for Managed Compute Resource Submissions

November 16, 2015
Author(s)
Emre H. Brookes, Nadeem Anjum, Joseph E. Curtis, Suresh Marru, Raminder Singh, Marlon Pierce
A new framework (GenApp) for rapid generation of scientific applications running on a variety of systems including science gateways has recently been developed . This framework currently builds a GUI and/or web based user interface for a variety of target

A dimensional analysis on firebrand penetration through a mesh screen

November 15, 2015
Author(s)
Jiann C. Yang, Samuel L. Manzello
A dimensional analysis on firebrand penetration through a mesh screen was carried out to provide a framework to correlate a limited set of experimental data previously reported by Manzello et al. (2011). Two dimensionless variables were obtained. The

Measuring and Specifying Combinatorial Coverage of Test Input Configurations

November 14, 2015
Author(s)
David R. Kuhn, Raghu N. Kacker, Yu Lei
A key issue in testing is how many tests are needed for a required level of coverage or fault detection. Estimates are often based on error rates in initial testing, or on code coverage. For example, tests may be run until a desired level of statement or

Minimizing Attack Graph Data Structures

November 14, 2015
Author(s)
Peter Mell, Richard Harang
An attack graph is a data structure representing how an attacker can chain together multiple attacks to expand their influence within a network (often in an attempt to reach some set of goal states). Restricting attack graph size is vital for the execution

Expanding Continuous Authentication with Mobile Devices

November 13, 2015
Author(s)
Kim B. Schaffer
Continuous Authentication has been around but has been met with several limitations. Recent development of mobile platforms are providing relief for many of these limitations as they take advantage of multiple sensors and sufficient processing power for

Gold Nanoparticle Quantitation by Whole Cell Tomography

November 13, 2015
Author(s)
Aric W. Sanders, Kavita M. Jeerage, Cindi Schwartz, Alexandra Curtin, Ann C. Chiaramonti Debay
Many proposed biomedical applications for engineered gold nanoparticles require their incorporation by mammalian cells in specific numbers and locations. Here, the number of gold nanoparticles inside of individual mammalian stem cells was characterized

Thermodynamic Properties of R-227ea, R-365mfc, R-115, and R-13I1

November 13, 2015
Author(s)
Eric W. Lemmon, Roland Span
Equations of state are presented for the refrigerants 1,1,1,2,3,3,3-heptafluoropropane (R-227ea) and 1,1,1,3,3-pentafluorobutane (R-365mfc). Typical uncertainties of properties calculated with the new equations are 0.2 % in density, 1 % to 2 % in heat

Effects of Wireless Packet Loss in Industrial Process Control Systems

November 12, 2015
Author(s)
Yongkang Liu, Rick Candell, Nader Moayeri
Timely and reliable sensing and actuation control are essential in networked control. This depends on not only the precision/quality of the sensors and actuators used but also on how well the communications links between the field instruments and the

Maps of Non-hurricane Non-tornadic Wind Speeds With Specified Mean Recurrence Intervals for the Contiguous United States Using a Two-Dimensional Poisson Process Extreme Value Model and Local Regression

November 12, 2015
Author(s)
Adam L. Pintar, Emil Simiu, Franklin T. Lombardo, Marc L. Levitan
This report describes a procedure for creating maps of non-hurricane, non-tornadic wind speeds for a set of recurrence intervals of interest between \num{10} and \num{100000} years over the contiguous United States. The procedure is carried out in two

Optimizing Hybrid Metrology: Rigorous Implementation of Bayesian and Combined Regression.

November 12, 2015
Author(s)
Mark Alexander Henn, Richard M. Silver, John S. Villarrubia, Nien F. Zhang, Hui Zhou, Bryan M. Barnes, Andras Vladar, Bin Ming
Hybrid metrology, e.g. the combination of several measurement techniques to determine critical dimensions, is an important approach to meet the needs of semiconductor industry. A proper use of hybrid metrology may not only yield more reliable estimates for

The Practice of Pulse Processing

November 12, 2015
Author(s)
Joseph W. Fowler, Bradley K. Alpert, William B. Doriese, Young Il Joe, Galen C. O'Neil, Joel N. Ullom, Daniel S. Swetz
The analysis of data from x-ray microcalorimeters requires great care; their excellent intrinsic energy resolution cannot usually be achieved in practice without a statistically near-optimal pulse analysis and corrections for important systematic errors

Thermally stable thin-film filters for high-power extreme-ultraviolet applications

November 12, 2015
Author(s)
Charles S. Tarrio, Robert F. Berg, Thomas B. Lucatorto, Bruce Lairson, Heidi Lopez, Travis Ayers
We investigated several types of thin-film filters for high intensity work in the extreme-ultraviolet (EUV) spectral range. In our application, with a peak EUV intensity of 2.7 W cm-2, Ni-mesh-backed Zr filters have a typical lifetime of 20 hours, at which

Identifying Performance Assurance Challenges for Smart Manufacturing

November 11, 2015
Author(s)
Moneer M. Helu, Katherine C. Morris, Kiwook Jung, Kevin W. Lyons, Swee K. Leong
Smart manufacturing has the potential to address many of the innovation drivers faced by industry. However, the manufacturing community often needs assistance to develop and use the variety of available technologies to improve their systems. To assure the
Displaying 17151 - 17175 of 73881
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