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We investigated the expression status of periostin in breast cancer stem cells and its clinical implications in order to lay a foundation for managing breast cancer. CD44+/CD24-/line- tumor cells (CSC) from clinical specimens were sorted using flow cytometry. Periostin expression status was detected in CSC cells and 1,086 breast cancer specimens by Western(More)
The optimal widely linear (WL) minimum variance distortionless response (MVDR) beamformer, which has a powerful performance for the reception of a noncircular signal, was proposed by Chevalier et al. in 2009. Nevertheless, in spectrum monitoring or passive listening, the optimal WL MVDR beamformer is hard to implement due to an unknown second-order (SO)(More)
This paper presents a new direction-of-arrival (DOA) estimation method using the concept of sparse representation of an array cross-correlation vector (ACCV), in which DOA estimation is achieved by finding the sparse parameter vector according to an optimization criterion. Compared with other sparse recovery algorithms the proposed method achieves a higher(More)
Phenotypic and genotypic tolerance in 71 Listeria monocytogenes isolates from different varieties of foods to benzalkonium chloride (BC) and cadmium were investigated by susceptibility test and molecular methods. To investigate the role of efflux pumps in BC tolerance, reserpine, an efflux pump inhibitor, was added to the BC tolerant strains. Tolerance to(More)
In the last decades the problem of determining the directions-of arrival (DOAs) of plane waves impinging on a sensor array has been widely investigated by the signal processing community [1]. Many high-resolution DOA estimation methods [2—4] have been proposed and the theoretical analysis as well as the computer simulations have demonstrated their(More)
Hierarchical cryptographic key management of access control can be modeled as a partially ordered set in which a high security class can derive its descendant encryption keys, but not vice versa. In this paper, we propose a practical key management scheme for our segment-based document which is a novel XML-based document format for web publishing, called(More)