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Displaying 18501 - 18525 of 74178

Quantifying Crystallinity in High Molar Mass Poly(3-hexylthiophene)

June 3, 2014
Author(s)
Chad R. Snyder, Ryan C. Nieuwendaal, Dean M. DeLongchamp, Christine K. Luscombe, Prakash Sista, Shane D. Boyd
We extend a recent comprehensive study of 3-hexylthiophene oligomers to high molar mass poly(3-hexylthiophene) (P3HT) fractions, such as those used in organic photovoltaic devices. Through a combination of differential scanning calorimetry (DSC) and 13C

Resource Allocation for Selection Decisions with Measurement Uncertainty

June 3, 2014
Author(s)
Dennis D. Leber, Jeffery W. Herrmann
Before selecting an alternative based on attribute values that have been determined through a measurement process that has error, a decision-maker can, in some cases, collect additional data to reduce uncertainty. Unlike previous work in the area of

BPMN Profile for Operational Requirements

June 2, 2014
Author(s)
Conrad E. Bock, Raphael Barbau, Anantha Narayanan Narayanan
An important aspect of systems and products is how they interact with their environment, including how they are operated. Behaviors external to systems usually involve people not trained in the details of how systems are designed and built, but who need to

Method for combined biometric and chemical analysis of human fingerprints

June 2, 2014
Author(s)
Jessica L. Staymates, Shahram Orandi, Matthew E. Staymates, John G. Gillen
This paper describes a method for combining direct chemical analysis of latent fingerprints with subsequent biometric analysis within a single sample. The method described here uses ion mobility spectrometry (IMS) as a chemical detection method for

NIST Cybersecurity Framework Addresses Risks to Critical Infrastructure

June 2, 2014
Author(s)
Victoria Y. Pillitteri
On February 12, 2014 President Obama issued a statement that, "[c]yber threats pose one the gravest national security dangers that the United States faces. To better defend our nation against this systemic challenge, one year ago I signed an Executive

Overview of the TREC-2012 Microblog Track

June 2, 2014
Author(s)
Ian M. Soboroff, Iadh Ounis, Jimmy Lin, Craig Macdonald
The Microblog track examines search tasks and evaluation meth- odologies for information seeking behaviours in microblogging en- vironments such as Twitter. It was first introduced in 2011, address- ing a real-time adhoc search task, whereby the user

Predicting the J-V Curve in Organic Photovoltaics Using Impedance Spectroscopy

June 2, 2014
Author(s)
James I. Basham, Thomas N. Jackson, David J. Gundlach
We employ impedance spectroscopy as a method to predict the current-voltage curve in organic photovoltaics. This technique allows the quantification of the recombination rate, series resistance, carrier density and lifetime very close to normal operating

Viscoelastic Characterization of Fusion Processing in Bimodal Polyethylene Blends

June 2, 2014
Author(s)
Aaron M. Forster, Wei-Lun Ho, Kar T. Tan, Donald L. Hunston
Polyethylene is an advantageous material for the construction of buried pipelines. It is corrosion resistant, seismic tolerant, and utilizes low cost installation methods. Pipe sections are often joined using thermal fusion processes. The strength of the

1588 Power Profile Test Plan:

June 1, 2014
Author(s)
Carol Perkins, Jeff Laird, Ryan McEachern, Bob Noseworthy, Julien Amelot, Ya-Shian Li-Baboud, Kevin Brady

Absorptive Limiter for Frequency Selective Circuits

June 1, 2014
Author(s)
Juan C. Collado Gomez, Eduard Rocas, James C. Booth, Jordi Mateu, J. M. O'Callaghan, J. Verdu, A. Hueltes
This paper describes a novel absorptive limiter for frequency selective circuits. The proposed circuit allows the design of absorptive limiters based on a bi-state phase shifter, which is appropriate for integration into channelizing devices, such as

Aqueous Solubilization of Hydrophobic Supramolecular Metal-Organic Nanocapsules

June 1, 2014
Author(s)
Harshita Kumari, Steven R. Kline, Jerry L. Atwood
Micelles of metal-seamed C-alkylpyrogallol[4]arene-based (PgC nM) hexamers and dimers in water have been formulated and characterized using in situ scattering techniques. The aqueous solubilization of these hydrophobic nanocapsules is facilitated by the

Circuit Speed Timing Jitter Increase in Random Logic Operation after NBTI Stress

June 1, 2014
Author(s)
Guangfan Jiao, Jiwu Lu, Jason Campbell, Jason Ryan, Kin P. Cheung, Chadwin D. Young, Gennadi Bersuker
Recently, much effort has been spent trying to relate NBTI observations to real circuit impacts. While many of these efforts rely on circuit simulation to bridge this gap, an experimental approach is, of course, preferred. In this study we provide this
Displaying 18501 - 18525 of 74178