Listeners are remarkably adept at recognising speech in natural multisource environments, while most Automatic Speech Recognition (ASR) technology fails in these conditions. It has been proposed that this human ability is governed by Auditory Scene Analysis (ASA) processes, in which a sound mixture is segregated into perceptual packages, called ‘streams’, by a combination of bottom-up and top-d...

This paper clarifies the concepts and relationship between image fusion rules and operators based on wavelet transform. According to wavelet decomposition characteristic, a new strategy of calculating spatial frequency is put forward. Fusion experiments are performed on QuickBird panchromatic (PAN)and multispectral (MS) images based on orthogonal and biorthogonal wavelet, in which a method of c...

Currently, x-ray computed tomography (CT) requires source scanning so that projections can be collected from various orientations for image reconstruction. Limited by the scanning time, the temporal resolution of CT is often inadequate when rapid dynamics is involved in an object to be reconstructed. To meet this challenge, here the authors propose a scheme of multisource interior tomography fo...

Combining multisource cooperation and link-adaptive regenerative techniques, a novel protocol is developed capable of achieving diversity order up to the number of cooperating users and large coding gains. The approach relies on a two-phase protocol. In Phase 1, cooperating sources exchange information-bearing blocks, while in Phase 2, they transmit reencoded versions of the original blocks. Di...

Image segmentation is a critical technique for remote sensing image analysis and interpretation. It is the basis of image understanding, such as region-based change detection for maps updating, target recognition, and so on. Existing literatures [1, 2] have proved that, by combining multiple data sources, e.g., synthetic aperture radar (SAR) and optical imagery, the overall classification accur...

We consider the problem of testing two simple hypotheses about unknown local characteristics of several independent Brownian motions and compound Poisson processes. All of the processes may be observed simultaneously as long as desired before a final choice between hypotheses is made. The objective is to find a decision rule that identifies the correct hypothesis and strikes the optimal balance...

OBJECTIVE To investigate the literature for evidence that workplace based assessment affects doctors' education and performance. DESIGN Systematic review. DATA SOURCES The primary data sources were the databases Journals@Ovid, Medline, Embase, CINAHL, PsycINFO, and ERIC. Evidence based reviews (Bandolier, Cochrane Library, DARE, HTA Database, and NHS EED) were accessed and searched via the ...