Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 4600 for “"Coding"”.
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NEW PARADIGMS IN SOURCE CODING AND CHANNEL CODING
… information theory, data compression and channel coding, are often considered as having reached maturity a long time ago. Our research brings fresh perspectives to both these areas by challenging long-standing assumptions and introducing new frameworks. The Shannon entropy and rate-distortion …
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Coding AuthentiCity
… the form-based code, and the components of the coding document. After considering all three case studies, this thesis formulates conclusions about a range of motivations underlying the use of form-based codes as well as which motivations will have the most significant impact on how form-based …
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Network coding
In the network coding problem, there are k commodities each with an associated message Mi, a set of sources that know Mi and a set of sinks that request Mi. Each edge in the graph may transmit any function of the messages. These functions define a network coding solution. We explore three topics …
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Discrete noiseless coding
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1957.
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Scalable video coding
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Structured video coding
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1991.
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Investigation of key non-coding and coding genes in cutaneous melanomagenesis
Cutaneous melanoma is associated with significant morbidity and mortality representing the most significant cutaneous malignancy. As it is known that early diagnosis and treatment are the most efficient approaches to cure cutaneous melanoma, an improved understanding of the molecular pathogenesis …
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Some Techniques in Universal Source Coding and Coding for Composite Sources
We consider three problems in source coding. First, we consider the composite source model. A composite source has a switch driven by a random process which selects one of a possible set of subsources. We derive some convergence results for estimation of the switching process, and use these to …
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Demarcation of coding and non-coding regions of DNA using linear transforms
Deoxyribonucleic Acid (DNA) strand carries genetic information in the cell. A strand of DNA consists of nitrogenous molecules called nucleotides. Nucleotides triplets, or the codons, code for amino acids. There are two distinct regions in DNA, the gene and the intergenic DNA, or the junk DNA. Two …
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Coding in 802.11 WLANs
Forward error correction (FEC) coding is widely used in communication systems to correct transmis- sion errors. In IEEE 802.11a/g transmitters, convolutional codes are used for FEC at the physical (PHY) layer. As is typical in wireless systems, only a limited choice of pre-speci¯ed coding rates is …
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Models of sensory coding
This work is aimed at understanding and modelling some of the general computational principles of sensory information processing in the brain. The sensory system detects physical quantities of the environment and transforms them into internal representations on which behavioural decisions are …
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Deformation-invariant sparse coding
Sparse coding represents input signals each as a sparse linear combination of a set of basis or dictionary elements where sparsity encourages representing each input signal with a few of the most indicative dictionary elements. In this thesis, we extend sparse coding to allow dictionary elements to …
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Locally decodable source coding
Source coding is accomplished via the mapping of consecutive source symbols (blocks) into code blocks of fixed or variable length. The fundamental limits in source coding introduces a tradeoff between the rate of compression and the fidelity of the recovery. However, in practical communication …
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Coding techniques for multicasting
… a multiuser generalization of the dirty paper coding problem. This generalization is interesting in its own right and is studied in detail in Chapter 3. The scenario we study is that of one sender and many receivers, all interested in a common message. There is additive interference on the …
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Multiscale coding of images
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1988.
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CODING E NON-CODING RNA COME BIOMARCATORI DI SEVERITA’ DI NAFLD E DI FIBROSI
… l'alterazione del profilo di espressione dei coding e dei non-coding RNA nel siero di pazienti con NAFLD rispetto a soggetti di controllo. A tale scopo abbiamo eseguito un'analisi dell'intero trascrittoma espresso nel siero di pazienti mild NAFLD (NAS score ≤4; F=0), severe NAFLD (NAS score …
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Pulse Coding for ionospheric radar
… low power transmission using long sequence pulse coding. The main idea of the coding technique is to make use of the good correlation properties of certain codes to implement better Signal-to-Noise Ratio. A 1019-bit Legendre sequence is going to be used in the CADI system. For the Barker 13, the …
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