BACKGROUND Horizontal gene transfer (HGT) is recognized as one of the major forces for bacterial genome evolution. Many clinically important bacteria may acquire virulence factors and antibiotic resistance through HGT. The comparative genomic analysis has become an important tool for identifying HGT in emerging pathogens. In this study, the Serine-Aspartate Repeat (Sdr) family has been compared...

Emerging global standards for high-speed data, like WiMAX, WiBro, HSDPA and EVDO, presently provide islands of coverage. Such standards require new capabilities from mobile devices. With the coexistence of independent standards, protocols and services it is essential to develop wireless platform that can seamlessly connect to any access networks supported by different standards. Here proposed s...

Digital Signal Processing (DSP) technology continues to transform radar systems and SDR systems. DSP technology has made it possible to improve dramatically the gains in radar sensitivity, range and image quality, as well as the gains in the SDR radio performance, data bandwidth and power efficiency. Next generation radars with SDR systems can leverage advancing DSP technology with advanced tec...

Spoken Document Retrieval (SDR) and Spoken Term Detection (STD) have been two of the most intensively investigated topics in spoken document processing research according to the establishment of the SDR and STD test collections by the Text REtrieval Conference (TREC) and NIST. Because Japanese spoken document processing researchers also requires such test collections for SDR and STD, we have es...

A real time, 2 Mbps to 150 Mbps portable SDR unit with MIMO and sensing capability which exposes all the PHY parameters to the higher layers will help advance experimental cognitive radio (CR), and wireless networking research. The current SDR implements a slight variant of the 802.11n draft specification, with the entire baseband implemented on a single Xilinx Virtex II 8000 device using comme...

This paper considers the (NP-)hard problem of joint multicast beamforming and antenna selection. Prior work has focused on using Semi-Definite relaxation (SDR) techniques in an attempt to obtain a high quality sub-optimal solution. However, SDR suffers from the drawback of having high computational complexity, as SDR lifts the problem to higher dimensional space, effectively squaring the number...

We consider supervised dimension reduction (SDR) for problems with discrete variables. Existing methods are computationally expensive, and often do not take the local structure of data into consideration when searching for a low-dimensional space. In this paper, we propose a novel framework for SDR which is (1) general and flexible so that it can be easily adapted to various unsupervised topic ...

We describe a multicore Software-Defined Radio (SDR) architecture for Global Navigation Satellite System (GNSS) receiver implementation. A GNSS receiver picks up very low power signals from multiple satellites and then uses dedicated processing to demodulate and measure the exact timing of these signals from which the user’s position, velocity, and time (PVT) can be estimated. Three GNSS SDR ar...

Factor models are widely used in summarizing large datasets with few underlying latent factors and in building time series forecasting models for economic variables. In these models, the reduction of the predictors and the modeling and forecasting of the response y are carried out in two separate and independent phases. We introduce a potentially more attractive alternative, Sufficient Dimensio...

To increase the productivity in various sectors, foundation can be made based on mobile communication solutions to different problems. SDR is the preferred technology to stitch together advanced services for ubiquitous global mobile connectivity. We have investigated in the present study the Sigma Delta ADC, one important component of SDR. Improvement in Dynamic Range including the SFDR with a ...