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 67 for “"Frequency Scaling"”.
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Continuous voltage-frequency scaling (CVFS)
… logic families. We present a continuous voltage-frequency scaling (CVFS) approach where supply variation is relaxed, and timing violations are avoided through the use of on-chip clock generation. A simple model of the critical path is presented to track circuit behavior in real time. This …
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Frequency scaling of rain attenuation on satellite links in the Ku/Ka-bands using OLYMPUS satellite data
Frequency scaling of attenuation is the prediction of attenuation at a desired frequency from attenuation values at a base frequency. The attenuation at the base frequency is often known from prior measurements. Frequency scaling of attenuation is of interest because of the eventual need to exploit …
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On the accuracy of estimating input impedance of probe-fed air-substrate microstrip patch antennas using the theory of characteristic modes
… The results of both methods require a downward frequency scaling on the order of 8% to better agree with experiment, attributable to losses in the real-world materials. The simpler method (the virtual probe model) is shown to provide good input resistance predictions, but the input reactance is …
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Interactive tools for sound signal analysis
… such as time-scale modification and frequency scaling. The above sound analysis/synthesis sinusoidal representations and transformations were developed as two interactive tools-with Graphical User Interface (GUI) using MATLAB. In addition, an interactive tool for signal frequency …
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Multilayer Techniques to Address Parameter Variation
… in both static power consumed and maximum frequency supported. In this environment, ignoring variation effects when scheduling applications or when managing power with Dynamic Voltage and Frequency Scaling (DVFS) is suboptimal. This thesis presents a set of variation-aware algorithms for …
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Effective memory management for mobile environments
… responsiveness.</p> <p>We implement a GC-aware frequency scaling governor for Android devices. We also explore the tradeoffs of power and performance <em>in vivo</em> for a range of realistic GC variants, with established benchmarks and real applications running on Android virtual machines. We …
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Asymptotically nonliner oscillatory shear: theory, modeling, measurements and applications of nonlinear elasticity to stimuli-responsive composites
… the 2D Pipkin space of deformation amplitude and frequency. A low-dimensional language and framework is introduced for viscoelastic characterization using asymptotic material functions in oscillatory shear, referred to as medium amplitude oscillatory shear (MAOS). These material functions, four in …
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rMPI : an MPI-compliant message passing library for tiled architectures
… increasingly rely on parallelism, as opposed to frequency scaling, for improvements in performance. Microprocessor designers are attaining such parallelism by placing multiple processing cores on a single piece of silicon. As the architecture of modern computer systems evolves from single …
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Optimisation of battery operating life considering software tasks and their timing behaviour
… is optimised using processor voltage and frequency scaling, per task or per task set, and processor shutdown, periodically or task-dependent. An event stream based hard real-time test ensures the feasibility of the solutions, and it provides low computational complexity. A best …
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Design of low-voltage, high-bandwidth radio frequency power converters
… low-power applications. This thesis explores the scaling of magnetic component size with frequency, and it is shown that substantial miniaturization is possible with increased frequencies even considering material and heat transfer limitations. Moreover, the impact of frequency scaling of power …
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Pressure Fluctuations in a High-Reynolds-Number Turbulent Boundary Layer over Rough Surfaces of Different Configurations
… the principal findings is the development of two scaling laws for the low frequency pressure fluctuations. Both of these are based on the idea that the defect between the edge velocity and some local boundary layer velocity sustains the pressure fluctuations in the outer regions of the flow. The …
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Development of an Electrically Small Vivaldi Antenna: The CReSIS Aerial Vivaldi (CAV-A)
… weight, and bandwidth requirements, a simple frequency scaling of a previously published design was unachievable. Most published single-element Vivaldi antenna designs were constrained by traditional thought that says the antenna length should be multiple free-space wavelengths and the antenna …
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Study of slant path attenuation ratios derived from a dual-polarized radar
… attenuating effects of rain on these signals. Frequency scaling, a technique where attenuation at one frequency can be scaled up (or down) to another frequency, can extend the known data base of propagation impairments. This thesis studies the ratios of attenuations in frequency pairs 14/11, …
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ADAPTIVE POWER MANAGEMENT FOR COMPUTERS AND MOBILE DEVICES
… power management (DPM), dynamic voltage and frequency scaling (DVFS), and dynamic task migration for workload consolidation are system level power reduction techniques widely used during runtime. In the first part of the dissertation, we concentrate on the dynamic power management of the …
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Time Aliasing Methods of Spectrum Estimation
… of a signal for the purpose of improving its frequency domain representation. Time aliasing allows characteristics of longer time window functions to be used with shorter DFT length. Windows designed specifically for use with time aliasing have improved properties compared to conventional …
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Application of a Blockchain Enabled Model in Disaster Aids Supply Network Resilience
… the Internet of Things (IoT) and Dynamic Voltage Frequency Scaling (DVFS) algorithm are explored employing a network-based simulation. The theoretical analysis reveals an advancement in disaster-aids supply network strategies using smart contracts for collaborations. The simulation study indicates …
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Energy-efficient wireline transceivers
… (2) a 4-10.5Gb/s continuous-rate CDR with novel frequency acquisition scheme based on bang-bang phase detector (BBPD) and a ring oscillator-based fractional-N PLL as the low noise wide range DCO in the CDR loop; (3) a source-synchronous energy-proportional link with dynamic voltage and frequency …
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Permeability Spectra of Electrodeposited CoFe Film for Inductor Applications
… control techniques, such as dynamic voltage and frequency scaling (DVFS), enhance system efficiency by adjusting clock frequency and voltage based on computational load. Integrated voltage regulators, particularly fully integrated voltage regulators (FIVRs), are essential for DVFS implementation, …
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General -Purpose Processors for Multimedia Applications: Predictability and Energy Efficiency
… architecture adaptation and dynamic voltage/frequency scaling (DVS). A key to effective adaptation is the control algorithm, which determines when and what to adapt. We develop algorithms based on two opportunities for saving energy in modern processors: (1) they often run faster than …
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Energy efficient operating systems and software
… management techniques using dynamic voltage and frequency scaling have been explored. Efficient workload prediction strategies have been developed that enable just-in-time computation. An algorithm for efficient real-time operating system task scheduling has also been developed that minimizes …
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