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In recent years, sensor research has been undergoing a quiet revolution, promising to have a significant impact throughout society that could quite possibly dwarf previous milestones in the information revolution. Realizing the great promise of sensor networks requires more than a mere advance in individual technologies. It relies on many components working(More)
Compressive sampling is a novel framework that exploits sparsity of a signal in a transform domain to perform sampling below the Nyquist rate. In this paper, we apply compressive sampling to significantly reduce the sampling rate of video. A practical system is developed that first splits each video frame into non-overlapping blocks of equal size.(More)
We study lossy-to-lossless compression of medical volumetric data using three-dimensional (3-D) integer wavelet transforms. To achieve good lossy coding performance, it is important to have transforms that are unitary. In addition to the lifting approach, we first introduce a general 3-D integer wavelet packet transform structure that allows implicit bit(More)
This paper considers TCQ and LDPC codes for the quadratic Gaussian Wyner-Ziu problem. After TCQ of the source input X, LDPC codes are used to implement SlepianWolf coding of the quantized source input Q(X) given the side information Y at the decoder. Assuming ideal SlepianWolf coding in the sense of achieving ,the theoretical limit H ( Q ( X ) I Y ) , it is(More)
We study the problem of packetizing embedded multimedia bitstreams to improve the error resilience of source (compression) codes. This problem is important because of the increasing popularity of embedded compression methodology [1]–[7] and its suitability for scalable streaming media [8], [9] over IP or/and mobile IP. We study various packetization schemes(More)
We have altered the TACTAAC sequence in the yeast CYH2m gene intron to TACTACC. This mutation changes the nucleotide at the normal position of the branch in intron RNA lariats produced during pre-mRNA splicing, and it prevents splicing in vivo. In a yeast pre-mRNA splicing system, CYH2m pre-mRNA carrying the TACTACC mutation is not specifically cut or(More)
Precursors to mRNA become substrates for splicing by being assembled into a complex multisubunit structure, the spliceosome. To study the assembly of the yeast spliceosome, intermediate complexes were separated by electrophoresis on nondenaturing polyacrylamide gels. Four splicing-dependent complexes, A1, A2-1, A2-2, and B, were observed. The order of(More)
We examine successive refinement for the Wyner-Ziv problem described in a recent paper by Steinberg and Merhav, where the authors showed that if the side information for all stages is identical, then the jointly Gaussian source with squared error distortion measure is successively refinable. We first extend this result to the case where the difference(More)