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 11 of 11 for “"Coarse-fine"”.
-
An investigation on the use of SNR distributions for the optimisation of coarse-fine spectrum sensing for cognitive radio
This thesis investigates the optimisation of Coarse-Fine (CF) spectrum sensing architectures under a distribution of SNRs for Dynamic Spectrum Access (DSA). Three different detector architectures are investigated: the Coarse-Sorting Fine Detector (CSFD), the Coarse-Deciding Fine Detector (CDFD) and …
-
Rolling contact fatigue of silicon nitride.
… four-ball machines. Three types of surface with coarse, fine and RCF-conventional finishing conditions were examined. Flexure strength tests on half-rod and C-Sphere showed an increasing surface strength from specimens with coarse, fine to RCF-conventionally machined conditions. During rolling …
-
Implementation of a force-reflecting telerobotic system with magnetically levitated master and wrist
… A six-degree-of-freedom magnetically levitated fine-motion device is used as the teleoperation master. The slave system is a redundant coarse-fine manipulator system which consists of a conventional robot equipped with a magnetically levitated fine-motion wrist identical to the master. The …
-
Development of bimodal grain structures and their effect on toughness in HSLA steel
… of bimodal ferrite grain structures (i.e. mixed coarse + fine grain sizes) in TMCR HSLA steel plates, as-continuously cast HSLA steel slabs with varying microalloying additions (Ti, Nb and V) were reheated to temperatures in the range 1000-1300 °C and deformed at 1110 °C and 980 °C temperatures …
-
Design and Realization of a Single Stage Sigma-Delta ADC With Low Oversampling Ratio
… each added bit. A segmented architecture with coarse/fine DEM and DAC is proposed to reduce the complexity of DEM and DAC due to the large internal quantizer. The consequence of the segmentation, mismatch between coarse and fine DACs can be noise-shaped by using a digital requantization (REQ) …
-
The spatiotemporal dynamics of visual attention during real-world event perception
… & Swallow, 2007). These chunks can occur at fine and coarse grains, with fine event segments being nested within coarse-grained segments. Individual differences in boundary detection are important predictors for subsequent memory encoding and retrieval and are relevant to both normative and …
-
Domain Decomposition Preconditioners for Hermite Collocation Problems
… in terms of two special rectangular grids -- a coarse grid with diameter <i>H</i> and a hybrid coarse/fine grid -- which together with the fine grid of diameter <i>h</i> provide the framework for approximating the interface problem induced by substructuring. We show that the proposed methods are …
-
Selecting material constituents and proportions for specific roller-compacted concrete mechanical properties
… properties especially compressive strength. The coarse-fine aggregate ratio was the parameter linked most directly to RCC compressive strength. Aggregate type (recycled aggregates, siliceous rounded sand and gravel, manufacture sand, and crushed aggregates) was also shown to affect aggregate …
-
Understanding bulk behavior of particulate materials from particle scale simulations
… are investigated as well. The results show that coarse-coarse contacts dominate the strong network and coarse-fine contacts dominate the total network. Next, DEM models are developed to simulate the particle dynamics inside a conical screen mill (comil) and magnetically assisted impaction mixer …
-
Relative Bio-Equivalence of Salbutamol MDIs Without and With the Attached Spacers. Development and validation of novel HPLC methods for the determination of salbutamol (and terbutaline) in urine excreted post-inhalation for bioequivalence and pharmacokinetic studies of Salbutamol MDIs
… (ACI) were examined and included measurement of fine particle dose (FPD) and total delivered dose (TDD). Bioequivalence studies were conducted in humans using the urinary pharmacokinetic method. Post-inhalation urinary excretion of salbutamol in the first 0.5 hour (lung deposition, USAL0.5) and …
-
Control design and performance evaluation of a hybrid flexure bearing for precision pointing applications
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms