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Displaying 6426 - 6450 of 13218

Polymer Membranes to Quarter-Wave Match Gaussian Optics

February 18, 2013
Author(s)
Jack T. Surek, Jason B. Coder, Joshua A. Gordon, David R. Novotny
… that a simple quarter wave match designed for 110 GHz in WR10 waveguide reduces reflected power by a factor of ten … IEEE Transactions on Terahertz Science and Technology …

Using Limestone to Reduce Set Retardation in High Volume Fly Ash Mixtures: Improving Constructability for Sustainability

December 3, 2012
Author(s)
Lisa R. Gurney, Dale P. Bentz, Taijiro Sato, Jason Weiss
… concretes are attractive not only because of the reduction in cement content and its associated greenhouse gases that … and diminution of the early age reactions, delays in setting (and finishing operations), and lower early-age … This paper explores the mitigation of these deficiencies in HVFA mixtures via the incorporation of fine limestone …

Phase-Noise Measurement System for the Terahertz-Band

November 30, 2012
Author(s)
Jason A. DeSalvo, Archita Hati, Craig W. Nelson, David A. Howe
… We present initial phase noise measurements in support of terahertz electronics, in the frequency range generally regarded as 0.1 to 10 THz. … mixer, we achieve a phase noise measurement system in waveguide (WR1.5). At 670 GHz an upper bound of this … IEEE Transactions on Terahertz Science and Technology …

Exotic behavior in quantum dot mode-locked lasers: dark pulses and bistability

May 24, 2012
Author(s)
Kevin L. Silverman, Mingming M. Feng, Richard P. Mirin, Steven T. Cundiff
… self-assembled quantum dot active regions can be operated in exotic output modes, stabilized by the complex gain and absorption dynamics inherent in these structures. One such device emits dark pulses - … dips on an otherwise stable continuous wave background-in an extended cavity design. We show that a dark pulse train …

Terahertz metrology and instrumentation

August 29, 2011
Author(s)
Erich N. Grossman, Zoya Popovic
… This paper gives an overview of measurement techniques used in the THz region of the electromagnetic spectrum, from about … IEEE Transactions on Terahertz Science and Technology …

Modeling Microstructures with OOF2

September 1, 2009
Author(s)
Andrew C. Reid, Rhonald Lua, R E. Garcia, Valerie R. Coffman, Stephen A. Langer
… International Journal of Materials and Product Technology …

Experimental Compressibilities and Structure Factors of Poly(ethylene glycol)Molecular Masses 2000 to 8000 in Aqueous-Solution

June 5, 2009
Author(s)
Kenneth A. Rubinson
… pressures. This implies that the structure of water in the vicinity of PEG is considerably altered relative to … the activity coefficient of water remains nearly invariant in the range. Graphs of S(q) for 3% w/w to 17% w/w solutions … their neat forms, any quantitative assignment of changes in partial volumes must necessarily be arbitrary. …

Investigation of N 2 Plasma Effects on the Depth Profile of Hydrogen Silsesquioxane Thin Films Using High Resolution Specular X-Ray Reflectivity

October 16, 2008
Author(s)
Hae-Jeong Lee, Eric K. Lin, J K. Lan, Y L. Cheng, H C. Liou, Wen-Li Wu, Y L. Wang, M S. Feng, C G. Chao
… power or time exposed to the plasma, oscillations present in the SXR profile of the as-cured HSQ film decrease in amplitude and the absolute value of the reflectivity rapidly decreases. These changes in the reflectivity data are due to increases in the film …

X-Ray Topography Study of Surface Damage in Single-Crystal Sapphire

July 1, 2005
Author(s)
Robert S. Polvani, Kate Medicus
… damage, near-surface microstructure, and fracture strength in a series of sapphire modulus of rupture (MOR) bars which … The strength of the bars was determined by failure in four point bending. The tensile surface of the bars was … International Journal of Applied Ceramic Technology …

Lithography With Self-Assembled Copolymer Microdomains

January 1, 2004
Author(s)
C Harrison, John A. Dagata, P Adamson
… on copolymer lithography;many more have expressed interest in joining the field.Researchers who are new to this area … Developments in Block Copolymer Science and Technology …

Visualization of Structural Steel Product Models

May 1, 2003
Author(s)
Robert R. Lipman, K A. Reed
… 2 (CIS2) file. Using a web-accessible translator, objects in a user's CIS2 file are mapped to application-specific VRML nodes in an augmented VRML file which can be explored using freely … Electronic Journal of Information Technology in Construction …

Monte Carlo Simulation of Noise Parameter Uncertainties

November 1, 2002
Author(s)
James P. Randa, Wojciech Wiatr
… We present results for uncertainties in noise-parameter measurements, obtained using a Monte Carlo … on a low-noise amplifier, with given uncertainties in the underlying measurements, including the standard noise … of the amplifier, the power measurements, and variations in the connections. Each set of simulated measurement results …

MatML: A New Language for Materials Materials Property Data Exchange over the Web

May 1, 2002
Author(s)
C P. Sturrock, E F. Begley
… for the automatic exchange of materials property data. In development since October 1999, MatML presently exists as … and future materials data exchange environment in which MatML will serve all parties with an interest in the promulgation of materials property data. …

Atomic Time

January 1, 2002
Author(s)
Thomas E. Parker, Marc A. Weiss
… McGraw-Hill Encyclopedia of Science and Technology …

Transformation, Ranking, and Clustering for Face Recognition Algorithm Performance

January 1, 2002
Author(s)
Stefan D. Leigh, Nathanael A. Heckert, Andrew L. Rukhin, P J. Phillips, Patrick J. Grother, E M. Newton, M Moody, K Kniskern, S Heath
The performance of face recognition algorithms is recently of increased interest, although to date empirical analyses of algorithms have been limited to rank-based scores such a cumulative match score and receiver operating characteristic. This paper
Displaying 6426 - 6450 of 13218
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