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 21 for “"space reduction"”.
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Characterization of the flow field response to vaneless space reduction in centrifugal compressors
The unsteady three-dimensional flow field for two centrifugal compressors of nearly identical design (one with a marginally smaller impeller-diffuser gap) is interrogated to assess the difference in the time averaged performance and unsteady loading characteristics of the impeller blades. …
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Optimization, random resampling, and modeling in bioinformatics
… procedure performs well in statistics, search space reduction is required to address the computation challenge.
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Partial Order Reduction for Planning
Partial Order Reduction: POR) is a technique that reduces the search space by recognizing interchangeable orders between actions and expanding only a subset of all possible orders during the search. It has been extensively studied in model checking and has proven to be an enabling technique for …
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Lean automation strategies for high volume, high complexity, manufacturing systems
… researched in this thesis concerns how to reduce space requirements and cost of a highly automated facility without sacrificing system maintainability, safety or throughput. For this study, any solution must utilize currently available technology. The thesis will review the basic research, concept …
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Approximation of the transient joint queue-length distribution in tandem networks
… description of queue states (i.e. state space reduction). These are referred to as aggregate (queue-length) distributions. This reduces the dimensionality of the joint distribution. The proposed method is formulated over three different stages: we approximate the time-dependent aggregate …
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Consensus, Cooperative Learning, and Flocking for Multi-agent Predator Avoidance
… utilizing function approximation for state space reduction performing the best. The results of the proposed consensus algorithm show that it provides quick and accurate transmission of information between agents in the flock. Simulations are conducted to show and validate the proposed hybrid …
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On-the-Fly Dynamic Dead Variable Analysis
… and thus reduce the size of the explored state space. Prior research into dead variable analysis for model checking does not make full use of dynamic run-time information that is present during model checking. We present an algorithm for intraprocedural dead variable analysis that uses dynamic …
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Petrology and Diagenesis of Medium-Grained Clastic Sediments in the Back-Arc Basins of the Western Pacific Ocean (Japan, Daito)
… greater diagenetic alteration, including pore-space reduction, rim cementation by clay minerals and calcite, pore-fill cementation by clinoptilolite, heulandite, analcite and later sparry calcite, than those deposited during later and post stages of rifting and at a more rapid rate of burial. …
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Materials discovery using in situ reduction and X-ray diffraction
… that highlights the combined use of in situ reduction reactions and X-ray diffraction to quickly explore compositional space. Reduction reactions provide a synthesis route that has been shown to gently traverse a compositional space. Traditional synthesis at high temperatures tends to only …
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LoopTree: Enabling Systematic and Flexible Exploration of Fused-layer Dataflow Accelerators
… buffer size. To further minimize buffer space requirement, some fused-layer dataflows also propose not buffering part of the tile at the cost of recomputation of the unbuffered data. The design space of fused-layer dataflow accelerators is large, but prior work only considers a subset of …
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Into the intangible: an exploration of gravity dream motifs among psychotherapists
… of their dreams. The final theme: The therapy space - reduction, retrieval, revival and reconnection with our dream self, materialised through the interview process. The invitation to talk about an intangible subject, the reflective distance from the dream space and then the phenomenological …
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Generalised Markovian analysis of timed transition systems
… a Markov chain through a process known as state space generation. The Markov chain thus generated can then be solved for its steady-state distribution by numerically determining the solution to a large set of sparse linear equations known as the steady-state equations. Existing techniques of …
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Carbon nanotube-based field ionization vacuum
… With the gas molecules removed from the enclosed space, reduction of the pressure is achieved. Key challenges in this Field Ionization Pump (FIP) project were the fabrication of high yield working pumps and a high enough ionization current at low voltages. The FIP is designed to evacuate volumes …
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Large-Scale Airline Recovery using Mixed-Integer Optimization and Supervised Learning
… approaches. Our approach reduces the solution space for a given disruption by adding constraints (cuts) based on the patterns discovered in the solutions to historical disruptions. The model with the added cuts is solved using mixed-integer optimization solvers. During the day of flight …
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Efficient Symbolic Execution of Concurrent Software
… reason about but also because of the large state space due to the simultaneous path and interleaving explosions. That is, the number of program paths in each thread may be exponential in the number of branch conditions, and also, the number of thread interleavings may be exponential in the number …
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Physical and biogeochemical properties of seasonal sea ice in the Atlantic sector of the Antarctic marginal ice zone
… a linear progression of thickness with habitat space reduction as sea ice consolidates. Instead, sea ice consolidates and thickens as a result of multiple cycles of breaking and rafting of young ice, and the biogeochemical signatures of the young ice are conserved in the reformed, consolidated …
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Bridge damage detection and BIM mapping
… guidelines. The first stage achieves a search space reduction for a subsequent defect type classification of over 90% with a risk of missing a defect patch of less than 10%. The second stage identifies the correct defect type to a potentially unhealthy surface area with a probability of 85%. A …
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Optimizing shared-use curbside spaces in connected transportation networks accounting for uncertainty
… largely relies on the effective use of curbside spaces. As the use of shared-use mobility services keeps growing, it is challenging the traditional approaches used to manage curbside spaces. The task of managing the curbside is often challenging as it is hard to predict the demand for those …
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Digital communication receiver algorithms and architectures for reduced complexity and high throughput
… The main idea of the RD-MLS is based on reduction of search space dimension. That is, a solution is searched over a subset of symbols to reduce the search complexity. In order to minimize the inevitable performance loss due to the search space reduction, a list tree search (LTS) algorithm …
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