Results 321 to 330 of about 7,506,861 (344)
Some of the next articles are maybe not open access.
Noiseless coding of correlated information sources
IEEE Transactions on Information Theory, 1973Correlated information sequences \cdots ,X_{-1},X_0,X_1, \cdots and \cdots,Y_{-1},Y_0,Y_1, \cdots are generated by repeated independent drawings of a pair of discrete random variables X, Y from a given bivariate distribution P_{XY} (x,y) .
D. Slepian, J. Wolf
semanticscholar +1 more source
Correlations between the coding and non-coding regions in DNA
Journal of Theoretical Biology, 1992In this paper various aspects of codon usage and k-tuple correlations in the DNA are compared. It is shown that the correlation structures of the coding and the non-coding regions are very similar and that codon usage is reasonably specific for large groups of organisms.
openaire +3 more sources
Periodicities in coding and noncoding regions of the genes
Journal of Theoretical Biology, 1990Gene population statistical studies of protein coding genes and introns have identified two types of periodicities on the purine/pyrimidine alphabet: (i) the modulo 3 periodicity or coding periodicity (periodicity P3) in protein coding genes of eukaryotes, prokaryotes, viruses, chloroplasts, mitochondria, plasmids and in introns of viruses and ...
Didier Arquès, Christian J. Michel
openaire +3 more sources
Annotating non-coding regions of the genome
Nature Reviews Genetics, 2010Most of the human genome consists of non-protein-coding DNA. Recently, progress has been made in annotating these non-coding regions through the interpretation of functional genomics experiments and comparative sequence analysis. One can conceptualize functional genomics analysis as involving a sequence of steps: turning the output of an experiment ...
Gang Fang +4 more
openaire +2 more sources
Region adaptive subband image coding
IEEE Transactions on Image Processing, 1998We present a region adaptive subband image coding scheme using the statistical properties of image subbands for various subband decompositions. Motivated by analytical results obtained when the input signal to the subband decomposition is a unit step function, we analyze the energy packing properties toward the lower frequency subbands, edges, and the ...
Oh-Jin Kwon, Rama Chellappa
openaire +3 more sources
Region-of-Interest Based Conversational HEVC Coding with Hierarchical Perception Model of Face
IEEE Journal on Selected Topics in Signal Processing, 2014In this paper, we propose a region-of-interest (ROI) based HEVC coding approach for conversational videos, with a novel hierarchical perception model of face (HP model), to improve the perceived visual quality of state-of-the-art HEVC standard.
Mai Xu, Xin Deng, Shengxi Li, Zulin Wang
semanticscholar +1 more source
Lossless region coding schemes
Proceedings DCC '95 Data Compression Conference, 2002Summary form only given. The use of describing regions as separate entities within an image has been applied within specific fields of image compression for many years. This study hopes to show that the technique, when applied with care, is practical for virtually all image types.
openaire +2 more sources
Mnemonic coding of visual space in the monkey's dorsolateral prefrontal cortex.
Journal of Neurophysiology, 19891. An oculomotor delayed-response task was used to examine the spatial memory functions of neurons in primate prefrontal cortex. Monkeys were trained to fixate a central spot during a brief presentation (0.5 s) of a peripheral cue and throughout a ...
S. Funahashi, C. Bruce, P. Goldman-Rakic
semanticscholar +1 more source
Coding 3D Connected Regions with F26 Chain Code
2018There are many applications in different fields, as diverse as computer graphics, medical imaging or pattern recognition for industries, where the use of three dimensional objects is needed. By the nature of these objects, it is very important to develop thrifty methods to represent, study and store them.
Hiram H. López +3 more
openaire +2 more sources
Wheat ubiquitin gene exhibits a conserved protein coding region and a diverged 3? non-coding region
Plant Molecular Biology, 1991Eukaryotic polyubiquitins, as their name suggests, occur ubiquitously inside the nucleus and cytoplasm of several fungi, plants and animals [8]. A multigene family encodes these polyproteins which consist of highly conserved identical repeats of 76 amino acids fused together in head-totail fashion.
Jian Weng +2 more
openaire +3 more sources