This paper proposes a new robust adaptive beamformer applicable to microphone arrays. The proposed beamformer is a generalized sidelobe canceller (GSC) with a variable blocking matrix using coefficient-constrained adaptive filters (CCAFs). The CCAFs, whose common input signal is the output of a fixed beamformer, minimize leakage of the target signal into the interference path of the GSC. Each c...

The construction of large, coherent quantum systems necessary for quantum computation remains an entreating but elusive goal, due to the ubiquitous nature of decoherence. Recent progress in quantum error correction schemes have given new hope to this field, but thus far, the codes presented in the literature assume a restricted number of errors and error free encoding, decoding, and measurement...

Given a polygonal curve P in three-dimensional (3-D) space, the polygonal approximation (PA) problem in this research is to 7nd a polygon P′ to approximate P either with the minimal polygonal segments under a given error or, conversely, with the minimal error under a speci7ed number of segments allowable. The former PA problem is called the PA-# problem; the latter PA problem is called the PApr...

The accurate measurement of the fluoride concentration in water is an essential prerequisite to stay within the allowable dosing tolerances required by the South African water fluoridation legislation. In the absence of reliable error estimates for fluoride measurement in natural water samples, a study was conducted utilising data from interlaboratory comparison studies conducted by the CSIR, t...

We describe the design and implementation of a new transport layer protocol MMSP (Mobile Multimedia Streaming Protocol) that realizes end-to-end mobility and robust IP soft handover; its target is to greatly increase the quality of multimedia streaming applications over wireless networks. We address two main causes of quality degradation in the mobile environment. One is the frequent movement o...

Abstract Aiming at the problem that probe station of current wafer test system cannot be measured, a calibration device for playing table is designed. The fully considers structure and uses laser interferometer to realize system. Various error sources are analyzed, errors allocated according device’s technical indicators. calculation results show maximum allowable designed 0.764μm, which in lin...

  Background and Objective: The reliability and validity of monitors for self-monitoring of blood glucose are debated. We evaluated the analytical performance of Accu-check Active (Boehringer Mannheim, Roche) which is one of the most commonly used monitors in Iran. Material and Methods: We compared the monitor readings with the reference values by percentage of values within...