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.
Results
Showing 1 to 20 of 1918 for “"Engineering, Electronics and Electrical"”.
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The adjacent errors of adaptive algorithms.
The adjacent errors of adaptive algorithms.
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Designs and applications of periodically loaded modeless integrated circuit subtrates.
Designs and applications of periodically loaded modeless integrated circuit subtrates.
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DESIGNING A CONTROL SYSTEM FOR THE AUTONOMOUS SMALL SCALE HELICOPTER
… Identify the system model (Helicopter model) and the second part is designing the compensator. Modeling the helicopter can be achieved by either first principles modeling or black box modeling. Based on the Model obtained, different controlling techniques can be used to design a compensator to …
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Control of power converter for grid integration of renewable energy conversion and STATCOM systems
… is in response to a number of global challenges and concerns, including climate change, increasing energy demand, and energy security. The investment is widely spread over the leading renewable energy technology sectors: wind, solar, biofuels, biomass, and fuel cells. Among those, wind, solar …
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Compressive gait biometric with wireless distributed pyroelectric sensors
Human tracking and recognition are desirable yet challenging for many applications including surveillance, computer vision, robotics, virtual reality, etc. Many biometric modalities have been used on these applications. Compared to other biometric modalities, such as fingerprints, face, and iris, …
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Analysis of low voltage regulator efficiency based on ferrite inductor
… based on ferrite inductor, using single- and two-phase topologies, were designed and simulated in MATLAB. Simulated values of output voltage and current were used to evaluate the buck converter (i.e., low voltage regulator) for power efficiency and percentage ripple reduction at …
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Partial DS-CDMA for mobile satellite data networks.
In recent years, random access protocols have received considerable attention as useful multiple access techniques for systems with high peak to average traffic ratios (bursty traffic). In most conventional random access protocols, when a single packet is transmitted in a given time period, it is …
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Reliability prediction techniques.
… considers methods for predicting reliability and mean time to first failure of complex systems. The need for these methods, is a result of recent advances in pure materials technology and fabrication procedures, that potentially lead to more reliable systems. In this thesis, two types of …
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Syndrome signature in built-in self-testing of VLSI circuits.
… very important in the context of modern VLSI and is a severe challenge for testing engineers. A number of basic analytic and heuristic methods exists for the solution of the fault detection and location problem in combinational circuits. Classical testing of combinational circuits requires a …
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RST invariant digital image watermarking
… as a method to ensure the copyright protection and credibility of images by means of embedding a known piece of digital data into host images. To be useful, a good watermarking scheme should be robust against all known attacks to a certain degree based on requirements. In this thesis, we propose …
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A novel reduced-complexity approach to hidden Markov modeling of two-dimensional processes with application to face recognition.
… to work on alternatives such as Pseudo 2-D HMM and Embedded HMM for 2-D recognition applications to avoid the complexity problem. Those applications include, but are not limited to, Face Recognition, Optical Character Recognition, Face Detection, Image Retrieval, and Object Recognition. The …
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Iterative decoding for rate adaptive forward error correction on the mobile satellite channel.
… partitioning of constellations, coding principle and iterative decoding are studied. We present design rules for multilevel coded modulations through the asymptotic coding gain, the minimum Hamming distance of the code and with information theory arguments. Computer simulations have been run to …
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Iterative computation of camera paths in an image based rendering application
… images are then matched pair-wise sequentially and correspondences are computed. An initial geometric path is found after by applying a bundle adjustment algorithm on these correspondences. Distances between cameras are computed from this initial estimation. The iteration process starts by …
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Control architecture of survivable multi-domain optical networks
… integrated with a set of algorithms, schemes and protocols. Based on the two-level inter-domain and intra-domain hierarchical control architecture, I proposed an inter-domain routing algorithm, ring-based topology aggregation scheme and modified RSVP-TE signalling protocol. This thesis aims to …
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Prototyping real-time multitasking systems.
… systems whose designs require careful analysis and involve several tradeoffs. Two of the main phases in the development of such systems are defining the required functional characteristics of the system, and then translating these requirements into a working design. A substantial amount of …
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Matching remote sensing images.
… processing. This thesis describes the design and implementation of a model-based vision system for the recognition of aerial images. The main objective is to register two remote sensing images taken at different times. First, some distinctive features are extracted and matched then, these …
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Iterative least squares algorithms for digital filter design.
… thesis, we propose new algorithms to simplify and improve the design of IIR digital filters and M-band cosine modulated filter banks. These algorithms are based on the Iterative Least Squares (ILS) approach. We first review the various Iterative Reweighted Least Squares (IRLS) methods used to …
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Equivalent circuits of thermoelectric coolers.
… are useful for simplified representation and deeper understanding of electrical devices. In this work a thermoelectric system is represented by equivalent circuits. The first part of work is introductory. It contains the definitions and derivations of the various thermoelectric effects. A …
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Quantitative capacitance measurements using a scanning probe microscope
This thesis describes the theory, simulation and experimental implementation of a method by which an atomic force microscope with scanning capacitance microscopy (SCM) capability can be employed in a nontraditional fashion to quantitatively measure the capacitance of metal-oxide-semiconductor (MOS) …
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Gallium nitride class-F power amplifier for UMTSWCDMA applications
… has already implemented 3G communication standard for mobile communications. Power amplifiers are the most power consuming unit in wireless communication systems. The power amplifiers used in UMTS devices need to be highly efficient. Improved efficiency not only extends the battery life but …
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