In digital breast tomosynthesis (DBT), oblique x-ray incidence shifts the image of an object in sub-pixel detector element increments with each projection angle. Our previous work has shown that DBT is capable of superresolution as a result of this property. Although super-resolution is achievable over a broad range of positions for frequencies parallel to the chest wall side of the breast supp...

This paper considers the problem of spectrum sensing in cognitive radio networks when the primary user employs Orthogonal Frequency Division Multiplexing (OFDM). We develop cooperative sequential detection algorithms based on energy detectors and the autocorrelation property of cyclic prefix (CP) used in OFDM systems and compare their performances. We show that sequential detection provides muc...

The development of silicon microstrip detectors for high luminosity application at the Large Hadron Collider (LHC) is described. The technical choices are most severely restricted by the anticipated radiation damage. The arguments are presented which led to the selection of the base line detectors for the silicon tracker of the LHC detector ATLAS: sandwiches of singlesided detectors of n-strips...

Copyright © 2012 Kamarulzaman Ab Aziz, Hezlin Harris and Nor Azlina Ab. Aziz. This is an open access article distributed under the Creative Commons Attribution License unported 3.0, which permits unrestricted use, distribution, and reproduction in any medium, provided that original work is properly cited. Contact author: Kamarulzaman Ab Aziz E-mail: [email protected] Intellectual Pro...

This paper demonstrates a label-free biosensing platform using Silicon-On-Insulator (SOI) micro-racetrack resonators, cascaded such that multiple measurements can be made using a single input and output waveguide and therefore a single detector. The devices are integrated with poly(dimethylsiloxane) microfluidic channels in order to characterize the devices’ sensing properties. Both bulk refrac...

Given a set of images containing objects from the same category, the task of image co-localization is to identify and localize each instance. This paper shows that this problem can be solved by a simple but intriguing idea, that is, a common object detector can be learnt by making its detection confidence scores distributed like those of a strongly supervised detector. More specifically, we obs...

Digital watermarking is a key technique practical intellectual property protecting systems and concealment correspondence systems. In this paper, we discussed a blind detection method for the digital image watermark. The theories research show that the orthogonal projection sequence of a digital image is one-to-one correspondence with this digital image. By this conclusion, we designed a novel ...

The e ects of stirring on the bulk etch rate of LR 115 detector has been investigated. The surface pro6le measurement method using an instrument called Form Talysurf has been used to measure the thickness of the active layer of the LR 115 detectors. The etchant was 10% aqueous solution of NaOH maintained at 60◦C. The bulk etch rate under magnetic stirring has been found to be 6:65 ± 0:34 m h−1 ...

The development of silicon microstrip detectors for high luminosity application at the Large Hadron Collider (LHC) is described. The technical choices are most severely restricted by the anticipated radiation damage. The arguments are presented which led to the selection of the base line detectors for the silicon tracker of the LHC detector ATLAS: sandwiches of singlesided detectors of n-strips...

This work describes preliminary test studies with a dual-headed SPECT system that utilizes a new generation of silicon double-sided strip detectors (DSSDs) (Figure 1) with a 1-mm bulk thickness and larger active area (60 × 60 mm) as compared to standard gamma-ray silicon detectors. Furthermore, major improvements in the ASIC design make this detector very suitable for low-energy imaging of smal...