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Displaying 34401 - 34425 of 73697

Source-Assisted Direction Estimation Inside Buildings

April 11, 2006
Author(s)
Kamran Sayrafian, D Kaspar
Source direction estimation inside building is a difficult and challenging task due to severe multipath signal propagation. Numerous algorithms and techniques exist that provide high-resolution direction estimation under certain conditions and channel

Weights and Measures in the United States

April 11, 2006
Author(s)
Carol T. Hockert
What does the weights and measures system in the United States look like, and what impact does it have on commerce? Every state in the United States has its own weights and measures program, and many states have county and city run programs within their

CCEM.RF-S1.CL (GTRF/02-03): RF Power Measurements with 2.4 mm Connectors

April 10, 2006
Author(s)
Thomas P. Crowley, J Miall, J dereede, J. Furrer, A Michaud, E. Dressler, T Zhang, K. Shimaoka, Ji Hyun Kim
A supplementary comparison of RF power measurements using 2.4 mm connectors was performed at 9 national metrology laboratories. The traveling standards were two commercial thermoelectric sensors and an associated power meter. Measurements were made at

TRC Thermodynamic Tables - Hydrocarbons, Supplement H-131

April 10, 2006
Author(s)
Michael D. Frenkel
Table 23-2-(1.21420)-db - Pages db-1722.0 and db-1722.1 New table for 2,6,10,14-tetramethylpentadecane containing the density for the real fluid at selected temperatures and pressures. Table 23-2-(1.21440)-db - Pages db-1724.0 and db-1724.1 New table for 7

Texture Measurements in 001> Fiber-Oriented PMN-PT

April 9, 2006
Author(s)
Kristen H. Brosnan, G L. Messing, Richard J. Meyer, Mark D. Vaudin
Textured (1-x)(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT) ceramics obtained by the templated grain growth (TGG) process a significant fraction of the piezoelectric properties of the Bridgman growth single crystals at a fraction of the cost. These materials could have

Method for Measuring the Raman Gain Tensor in Optical Fiber

April 7, 2006
Author(s)
Idan Mandelbaum, M Bolshtyansky, T F. Heinz, Angela R. Hight Walker
In this paper we introduce a technique to measure the tensor properties of the Raman gain in a short piece (10m) of silica based polarization maintaining optical fiber. We present the results of the measurement and show agreement with new and previous bulk

Performance of Electret Ionization Chambers in Magnetic Field

April 7, 2006
Author(s)
P Kotrappa, L R. Stieff, Timothy F. Mengers, Robert McMichael, Robert D. Shull
Electret Ionization Chambers (EIC) are widely used for measuring radon and radiation. The radiation measured includes alpha, beta and gamma radiation. These detectors do not have any electronics and as such can be introduced into magnetic field regions. It

Toward rapid and inexpensive identification of bulk carbon nanotubes

April 6, 2006
Author(s)
Katie Hurst, Anne Dillon, Jeffrey Blackburn, John H. Lehman
The volume fraction of metallic and semiconducting carbon single-wall nanotubes (SWNTs)hasbeen estimated for purified laser vaporization SWNTs, from an effective medium approximation and the measured spectral responsivity of a LiTaO 3 pyroelectric detector

AGGRES: A Program for Computing Power Crusts of Aggregates

April 3, 2006
Author(s)
Javier Bernal
AGGRES, a Fortran 77 program for computing a power crust of an aggregate, is discussed. AGGRES takes a finite set of points from the surface of an aggregate, i.e. a three-dimensional object with no holes that contains its center of mass in its interior

Elastodynamic characterization of imprinted nanolines

April 3, 2006
Author(s)
Ward L. Johnson, Colm Flannery, Sudook A. Kim, Roy H. Geiss, Christopher Soles, Paul R. Heyliger
Experimental techniques employing Brillouin light scattering (BLS) and analytical techniques employing finite-element (FE) and Farnell-Adler models are being developed for characterizing acoustic modes and determining elastic moduli and dimensions of

Engineered Infills for Concrete Barriers

April 3, 2006
Author(s)
Kenneth A. Snyder, C Langton, B Clark, Chiara C. Ferraris, J Dawson
Entombment may be considered as an option for decommissioning nuclear concrete structures so that licenses for facilities on which these structures reside may be terminated. Prior to entombment, the nuclear facility permanently ceases operations and spent

Forensic Software Tools for Cell Phone Subscriber Identity Modules

April 3, 2006
Author(s)
Wayne Jansen, Richard Ayers
Cell phones and other handheld devices incorporating cell phone capabilities (e.g., smart phones) are ubiquitous. Besides placing calls, cell phones allow users to perform other tasks such as text messaging and phonebook entry management. When cell phones

International Comparison of Impact Reference Materials (2004)

April 3, 2006
Author(s)
Christopher N. McCowan, G. Roebben, Y. Yamaguchi, S. Lefrancois, Jolene D. Splett, S. Takagi, A. Lamberty
A three-year horizontal comparison has been completed between national laboratories that certify specimens for the indirect verification of Charpy impact test machines. The participants in this study were the Institute for Reference Materials and

Standardized Equation for Hydrogen Gas Densities for Fuel Consumption Applications

April 3, 2006
Author(s)
Eric Lemmon, Marcia L. Huber, Daniel G. Friend, Carl Paulina
One of three currently recognized methods for evaluating the consumption of gaseous hydrogen fuel in vehicle applications involves the determination of the equilibrium temperature and pressure of the gas before and after usage within a storage tank of
Displaying 34401 - 34425 of 73697
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