Learn More
—In traditional, adaptive signal processing algorithms one change both the amplitude and phase of the weight vectors associated with an array at each of the antenna elements. The use of complex weights offers greater control over the array response at the expense of system complexity. However, it is easier if one requires only amplitude variation with a(More)
The potential of solution-processed organic materials for use in electronic and optoelectronic systems is mainly due to their excellent processing capability on a variety of substrates. In developing combinatorial systems, one of the critical issues is how to precisely register disparate elements from different solutions on a single substrate in a lateral(More)
—In most adaptive algorithms, it is generally assumed that one knows the direction of arrival (DOA) of the signal of interest (SOI) through the steering vector of the array and the goal is to estimate its complex amplitude in the presence of jammer, clutter and noise. In space-time adap-tive processing (STAP) the goal is to seek for a target located along a(More)
BACKGROUND Single incision thoracoscopic surgery (SITS) is recognized as a difficult procedure and surgeons hesitate to perform this technique. We describe our experience of SITS and determine whether SITS can be a routine approach in minimally invasive surgery. METHODS From May 2011 to April 2013, a single operator attempted SITS for 264 cases. Their(More)
Rhus-related illnesses in Korea are mostly caused by ingestion of parts of the Rhus tree. Contact dermatitis occurrence after ingestion of Rhus-related food is very common in Korea. However, Rhus-related gastrointestinal disease is very rare. Herein, we present a case of eosinophilic gastroenteritis caused by Rhus ingestion. A 75-year-old woman was admitted(More)
OBJECTIVE To investigate potential predictors of biochemical recurrence (BCR) in patients with localized prostate cancer with negative surgical resection margin (SRM). MATERIALS AND METHODS Data from 582 consecutive patients diagnosed with localized prostate cancer with negative SRM who underwent only radical prostatectomy between November 2003 and April(More)
SUMMARY A Q-enhanced 8th order CMOS active bandpass filter is presented employing a novel two-stage self-calibration technique. The proposed active filter shows the better out-band attenuation performance than other reported CMOS active bandpass filters. The proposed calibration method enables the stable filtering operation affected by neither the input(More)
This study investigates the effect of focal plane variation using vibration in a femtosecond laser hole drilling process on Invar alloy fabrication quality for the production of fine metal masks (FMMs). FMMs are used in the red, green, blue (RGB) evaporation process in Active Matrix Organic Light-Emitting Diode (AMOLED) manufacturing. The taper angle of the(More)