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 15 of 15 for “"signal theory"”.
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Large Signal Theory on the Parallel Plane Triode
Made available in DSpace on 2014-12-04T21:02:43Z (GMT). No. of bitstreams: 1 0010550.pdf: 5431628 bytes, checksum: a575599845872cf2b57694e018f8f001 (MD5) Previous issue date: 1954
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Probing the First Stars with the 21-cm Signal: Theory, Methods, and Forecasts
… mass distribution, using the cosmological 21-cm signal. We begin in Part I by introducing the first stars, 21-cm cosmology, and the link between them (Chapter 1), as well as describing in detail the semi-numerical 21-cm signal simulation code 21cmSPACE, used throughout this thesis (Chapter 2). …
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Further evidence and understanding for the contrast signal theory of parallel processing in visual search
… and target-distractor similarity. The Contrast Signal Theory (CST) of visual search was proposed to account for these variations and elucidate the potential processing mechanism during the parallel stage of visual search. The core proposals of CST include that 1) objects are categorized as …
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Investigating the contribution of parallel processing to visual search performance according to the Target Contrast Signal Theory
… or target activation maps, Target Contrast Signal Theory (TCST) proposes that parallel processing in early vision involves evidence accumulation about how likely a given location is to contain the target in effort to reject items from further processing. The experiments presented and …
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The parallel nature of early visual processing in visual search
… led to the development of the Target Contrast Signal Theory, which proposed a different mechanism for parallel processing in visual search. In contrast to the pre-attentive process of saliency detection and generation proposed by classic theories, Target Contrast Signal Theory proposes that …
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Steganography and steganalysis: data hiding in Vorbis audio streams
… steganalysis, centering our efforts in acoustic signals, a branch of steganography and steganalysis which has received much less attention than steganography and steganalysis for images. With this purpose in mind, it’s essential to get first a basic level of understanding of signal theory and the …
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Avaliação da estabilidade a pequenos sinais em sistemas CA/CC em paralelo
… with AC systems from the perspective of small-signal stability of electric power systems. We present aspects related to linear and nonlinear representation of the DC link controls. The studies are performed using modal analysis techniques for power systems, as well as linear and nonlinear time …
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An information theoretic approach to veridical hallucination
… use in place of Lewis derive from a branch of signal theory, called Information Theory. Information Theory is a formal calculus for quantifying and computing the information content of a source or a signal carrying information about a source. It is an attempt to formalize an intuitive notion of …
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LOW-COST STRUCTURED-LIGHT 3D CAPTURE SYSTEM DESIGN
… 3D object based on differentials and small signal theory, and an experimental procedure for validating that the system under test meets the specifications for reconstructed object resolution that are predicted by our analytical model. By comparing our experimental measurements from the …
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Social Media and Relationship Development
… consistent with hypotheses based on commitment theory, self-presentation theory, and economic signal theory. Results are discussed in light of commitment theory, and the fact that many social scientists have perceived a recent societal trend toward ambiguity in relationship development processes …
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Signal theoretic characterization of a function using positive exponential basis functions
"A signal theory characterization of a time function or signal is a representation of the function throughout a sample interval by an orthogonal basis function expansion. The characterization described here obtains the coefficients in the expansion by processing the input waveform, in real time, …
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Portable computers for real-time signal processing: EEG analysis as a case study
… advances in both digital hardware and digital signal theory have led to a rapid expansion in the importance and application of computer-aided measurement (CAM) techniques. Of these advances, the emergence of cheap microprocessor technology of sufficient processing power and speed to support …
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Use of principal component analysis with linear predictive features in developing a blind SNR estimation system
<p>Signal-to-noise ratio is an important concept in electrical communications, as it is a measurable ratio between a given transmitted signal and the inherent background noise of a transmission channel. Currently signal-to-noise ratio testing is primarily performed by using an intrusive method of …
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Applications of Riesz Transforms and Monogenic Wavelet Frames in Imaging and Image Processing
… beschäftigt sich mit modernen Verfahren der Signalverarbeitung in der Bildgebung sowie in der Bildverarbeitung. Hierzu werden Riesz-Transformationen und translationsinvariante Wavelet Frames zu monogenen Frames vereint und angewandt. Bekannte Techniken wie der Strukturtensor und der …