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 131 for “"Grid-based"”.
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Grid-based utility middleware infrastructure for distributed services provisioning
… service composition strategies are based on a predefined sequence of actions or workflow and are unsuitable when applied in dynamic and open settings due to their lack of scalability, fault-tolerance, and high bandwidth cost overhead. To address this problem, this thesis makes the …
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Fast Clustering Using a Grid-Based Underlying Density Function Approximation
… proposed to solve some of these issues. Density-based clustering algorithms use a concept called the “underlying density function”, which is a conceptual higher-dimension function that describes the possible results from the continuous data set that our input data is just a discrete sample of. …
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Automated detection of invariant manifold intersections using grid based approach
When designing spacecraft trajectories, there exist cases where a trade-off between time-of-flight and fuel become crucial to the mission design scenario, especially for unmanned missions where longer time-of-flight solutions can be considered. One effective way to produce longer time of flight …
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A framework for visualizing hardness reductions to grid-based games
Hardness proofs for grid-based games often use gadgets connected together to represent computational problems. We present an open-source framework to implement these reductions, producing actual game instances out of hard computational instances. Our framework first converts the input problem …
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Dynamic multi-target user interface design for grid based M-Services
… in a mobile computing environment. Many model based approaches for the generation of user interfaces have been proposed. These approaches were aimed at achieving effective information communication in a mobile computing environment. Unfortunately, current model based approaches do not support …
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A Management System for Service level Agreements in Grid based Systems
Grid based systems have increased the opportunity for users to deploy and execute their applications using Grid resources. These resources have varying reliability and performability, particularly when demand is high. If a Grid application is executed at such times, performance may suffer and …
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Dynamic Grid-Based Data Distribution Management in Large Scale Distributed Simulations
… a new DDM scheme, which we refer to as dynamic grid-based DDM. A lightweight UNT-RTI has been developed and implemented to investigate the performance of our DDM scheme. Our results clearly indicate that our scheme is scalable and it significantly reduces both the number of multicast groups …
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A Grid-Based Approximation Algorithm for the Minimum Weight Triangulation Problem
… our candidate solution, our algorithm uses grids to partition edges into levels by increasing weights, so that edges with similar weights appear in the same level. We incrementally triangulate the point set by constructing a growing partial triangulation for each level, introducing edges in …
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A single-pass grid-based algorithm for clustering big data on spatial databases
… inefficient due to insufficient memory capacity. Grid-based algorithms try to solve this problem by dividing the space into cells and then performing clustering on the cells. However these algorithms also become inefficient when even the grid becomes too large to be saved in memory. This thesis …
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A Grid based Indoor Radiolocation Technique Based on Spatially Coherent Path Loss Model
This thesis presents a grid-based indoor radiolocation technique based on a Spatially Coherent Path Loss Model (SCPL). SCPL is a path loss model which characterizes the radio wave propagation in an environment by solely using Received Signal Strength (RSS) fingerprints. The propagation of the radio …
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A roadmap for energy transition strategic planning and governance: a case study of Nigeria's grid-based renewable electricity sector.
… deploying renewable energy on the national grid provides succour to the complex dual energy issues of access and poverty currently experienced in Nigeria, promoting the reduction of greenhouse gas emissions and enabling Nigeria to fulfil the Paris Agreement's commitments. However, from the …
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Voxel-Level Absorbed Dose Calculations With A Deterministic Grid-Based Boltzmann Solver For Nuclear Medicine and The Clinical Value of Voxel-Level Calculations
… a clinically acceptable time. The deterministic grid-based Boltzmann solver (GBBS) was recently applied to radiation oncology where it was reported as fast and accurate for both megavoltage photons and high dose rate nuclide-based photon brachytherapy.</p> <p>This dissertation had two goals. The …
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Deep Learning for Short-Term Spatiotemporal Prediction of Shared Dockless E-Scooter Demand: Grid-Based Representation, Temporal Input Design, and Day-Type-Aware Model Benchmarking
… literature still lacks a coherent image-based deep learning framework. This is important because e-scooter demand is naturally distributed over urban space, and image-based models can learn spatial dependencies directly from demand maps. Moreover, prior studies often under-document how …
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Real-time Prediction of Dynamic Systems Based on Computer Modeling
… autonomous vehicle system a novel parallel grid-based RBE technique is firstly proposed. The formulations are derived by identifying the parallel computation in the prediction and correction processes of the RBE. A belief fusion technique, which fuses not only the observation information but …
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Performance comparison of data distribution management strategies in large-scale distributed simulation.
… of three DDM methods including the fixed grid-based, dynamic grid-based, and region-based methods. Also included is the use of multi-resolution modeling with various DDM strategies and analysis of the performance effects of aggregation/disaggregation with these strategies. Running numerous …
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Searching for patterns in Conway's Game of Life
… search algorithms use an explorative approach based on the rules of the game, but this can only sample a small fraction of the search space. More recently, people have used Sat solvers to search for patterns. These solvers are not specifically tuned to this problem and thus waste a lot of time …
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Generating vectors for pop-up cards from three-dimensional models
… when the card is opened, stands up on its own. Grid-based pop-up cards are the most difficult to design manually due to their complexity and number of pieces that must fit together accurately. In order to simplify the pop-up design and fabrication process, this paper presents a computational …
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Risk-aware navigation for UAV digital data collection
… With these assumptions, we provide the graph-based Data-collecting Robot Problem (DRP) model, and propose heuristic planning solutions that consist of a clustering step and a tour building step. Experiments show our methods provide high-quality solutions with high expected reward. Second, we …
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