Many purely neural network based speech separation approaches have been proposed to improve objective assessment scores, but they often introduce nonlinear distortions that are harmful modern automatic recognition (ASR) systems. Minimum variance distortionless response (MVDR) filters adopted remove distortions, however, conventional mask-based MVDR systems still result in relatively high levels...

An important question in multi-radio multi-channel and multi-hop networks is how to perform efficient network-wide broadcast. Currently almost all broadcasting protocols assume a single-radio single-channel network model. Simply using them in multi-channel environment without careful enhancement will result in unnecessary redundancy. In this paper, we focus on reducing the amount of redundant t...

Consumers are increasingly demanding products that closely match their individual preferences, and advances in manufacturing and information technologies have made it possible to satisfy this demand. This can be done in two ways. Under the traditional approach, firms can produce a larger number of product variants, and the greater selection enables consumers to find products that are closer to ...

Article history: Received 10 April 2008 Accepted 11 December 2008 Available online 25 December 2008

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An incentive mechanism about service effort provided by the manufacturer in a dual-channel supply chain is studied under asymmetric information. The principal-anent models are developed for asymmetric information and symmetric information, and then the optimal fixed payment and the optimal profit sharing ratio are obtained. In contrast to the case under symmetric information, the conclusion imp...

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