An LED backlight has been designed using the flow-line design method. This method allows a very efficient control of the light extraction. The light is confined inside the guide by total internal reflection, being extracted only by specially calculated surfaces: the ejectors. Backlight designs presented here have a total optical efficiency of up to 80% (including Fresnel and absorption losses) ...

The Very Large Array (VLA) Low-frequency Sky Survey (VLSS) has imaged 95% of the 3π sr of sky north of δ = −30◦ at a frequency of 74 MHz (4 meter wavelength). The resolution is 80 (FWHM) throughout, and the typical RMS noise level is 〈σ〉 ≈ 0.1 Jy/beam. The typical point-source detection limit is 0.7 Jy/beam and so far nearly 70,000 sources have been catalogued. This survey used the 74 MHz syste...

BACKGROUND The presence and extent of late gadolinium enhancement (LGE) has been associated with adverse events in patients with hypertrophic cardiomyopathy (HCM). Signal intensity (SI) threshold techniques are routinely employed for quantification; Full-Width at Half-Maximum (FWHM) techniques are suggested to provide greater reproducibility than Signal Threshold versus Reference Mean (STRM) te...

The primary goal of this paper is to give examples of the recently developed (finite-field) wavelet coding method by studying the encoder and decoder for some half-rate codes. We propose a decoding methodology based on estimating the polyphase components of the channel error pattern. To demonstrate the striking computational savings of the wavelet coding method over alternatives, we show that b...

Several web sites providing disaster-related information failed repeatedly after the Great East Japan Earthquake, due to flash crowds caused by Twitter users. Twitter, which was intensively used for information sharing in the aftermath of the earthquake, relies on URL shorteners like bit.ly to offset its strict limit on message length. In order to mitigate the flash crowds, we examine the curre...

There are hundreds of thousands of oil and gas wells across North America that are not currently producing oil or gas. Many of these wells have not been permanently decommissioned to meet environmental standards for permanent closure, but left in a inactive state that enables the well to be more easily reactivated. Some of the wells have been temporarily inactive for more than sixty years which...