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 76 for “"concatenation"”.
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The Forbidden Pattern Approach to Concatenation Hierarchies
… the minimal number of alternations between concatenation on one hand, and intersection, union, complement on the other hand. This question was first raised in 1971 (Brzozowski/Cohen) and besides the extended star-heights problem usually refered to as one of the most difficult open questions …
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Forbidden-Patterns and Word Extensions for Concatenation Hierarchies
… letters by using only Boolean operations and concatenation. The complexity of these languages can be measured with the so-called dot-depth. This measure leads to concatenation hierarchies like the dot-depth hierarchy (DDH) and the closely related Straubing-Thérien hierarchy (STH). The question …
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Concatenation of Space-Time Block Codes with ConvolutionalCodes
… performance of space-time block coded systems concatenation by convolutional codes is introduced. The improvement in the diversity order by the introduction of convolutional codes into the space-time block coded system is discussed. A general analytic expression for the error performance of a …
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Synthesis of continuous speech by concatenation of isolated words
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1983.
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Toward a theory of diffuse energy transport in large irregular structures
"We develop a ""concatenation ansatz"" of energy flow in large, complex structures to predict the response of a nominally diffusive system. The concatenation ansatz is inspired by statistical energy analysis (SEA) which is, in turn, based on an analogy to diffusive heat transfer. Where in heat …
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Channel matched iterative decoding for magnetic recording systems.
… recording. The first scheme is a two-level concatenation of channel-matched turbo equalization (TE) and outer RS, replacing current inner parity correction codes. Conventional TE is matched to the channel via the incorporation of the error pattern correction code (EPCC), which works …
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Studies of optimal track-fitting techniques for the DarkLight experiment
… method approximates the track as a piecewise concatenation of parabolas in three-dimensions, and (wrongly) assumes that the y and z components of the track are independent. When tested using simulated data, this returns a track which geometrically fits the data. However, the momentum extracted …
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Performance of turbo multi-user detectors in space-time coded DS-CDMA systems
… following the turbo principle. Depending on the concatenation scheme used, we divide these receivers into the Partitioned Approach (PA) and the Iterative Approach (IA) receivers. To enable the iterative exchange of information, these receivers employ a Parallel Interference Cancellation (PIC) …
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Time-domain concatenative text-to-speech synthesis.
A concatenation framework for time-domain concatenative speech synthesis (TDCSS) is presented and evaluated. In this framework, speech segments are extracted from CV, VC, CVC and CC waveforms, and abutted. Speech rhythm is controlled via a single duration parameter, which specifies the initial …
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Corpus-based unit selection for natural-sounding speech synthesis
… approximation is quantified by substitution and concatenation costs which grade what unit contexts are interchangeable and where concatenations are not perceivable. These costs are semi-automatically derived from data and are found to agree with acoustic-phonetic knowledge. The implementation is …
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A constructive lower bound for cardinality of codebooks capable of correcting multiple deletion and insertions
… is proposed. The construction is based on the concatenation of codes with shorter blocks. The algorithm will construct an s deletion and insertion correcting code based on a given s/2-deletion insertion correcting code. The size of the codebook grows exponentially and is comparable to …
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Spectral discontinuity in concatenative speech synthesis – perception, join costs and feature transformations
… quantify the compatibility of speech units for concatenation in unit selection synthesis. No previous study has reported a spectral measure that satisfactorily correlates with human perception of discontinuity. An analysis of the limitations of existing measures and our understanding of the …
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Discovering Dynamic Visemes
… the original speech, so simple blending at the concatenation boundaries ensures a smooth transition. The efficacy of dynamic visemes for computer animation is formally evaluated both objectively and subjectively, and compared with traditional phoneme to static lip-pose interpolation.
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Gene transfer history of carbon fixation proteins constrains marine cyanobacteria divergence times
… thus yield poorly resolved phylogenies, their concatenation clarifies a shared evolutionary history. This work integrates gene transfer with molecular clock calibration methods to determine divergence times. Accordingly, I evaluate the relationship between atmospheric evolution and the ecology …
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Single and joint iterative decoding for higher order modulation schemes
… also includes the BER and FER performance of the concatenation in parallel of different LDPC codes, some of which are based on well structured procedures, such as Euclidean Geometries (EG) and Projective Geomtries (PG), and Margulis constructions based on the Cayley graph, while the rest are based …
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Merging concurrent checking and off-line BIST
… complexity, pin count, and fault coverage. The concatenation properties of LCARs are introduced and recent developments in related issues are reviewed. Finally, a new area estimation method for circuit design is presented to ease silicon cost measurement
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Science and Natural Philosophy in the Poetry of Heinrich von Meissen (Frauenlob)
… Rhetorical devices like synecdoche, enjambment, concatenation, ekphrasis, and personification are used repeated and strategically in the leichs as didactic tools and hermeneutic guides, enabling the audience to augment the text’s overt theological, literary, and philosophical allusions with …
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Depth sensor based object detection using surface curvature
… with depth sensor. We form the HOC feature as a concatenation of the local histograms of Gaussian curvature and mean curvature. The linear Support Vector Machine (SVM) is employed for the object detection task in this work. We evaluate our proposed HOC feature on two widely used datasets and …
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New Approaches in Nonlinear Analysis and Modeling of Multichannel Signals
… Compared to traditional one-dimensional channel concatenation, our model consistently boosts accuracy by 5–8% across multiple machine learning algorithms in different EEG-based problems. The phase retrieval problem is an inverse problem which consists of recovering a constrained image from the …
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Iterative decoding for rate adaptive forward error correction on the mobile satellite channel.
… for multilevel coded modulation with parallel concatenation is suggested. Computer simulations have confirmed the efficiency of this new technique. Product codes are also considered: code construction and iterative decoding algorithms are studied. We focus on the two-dimensional (24, 12) Golay …
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